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codemirror.js
8735 lines
| 338.2 KiB
| application/javascript
|
JavascriptLexer
r1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others | |||
// Distributed under an MIT license: http://codemirror.net/LICENSE | ||||
// This is CodeMirror (http://codemirror.net), a code editor | ||||
// implemented in JavaScript on top of the browser's DOM. | ||||
// | ||||
// You can find some technical background for some of the code below | ||||
// at http://marijnhaverbeke.nl/blog/#cm-internals . | ||||
(function(mod) { | ||||
if (typeof exports == "object" && typeof module == "object") // CommonJS | ||||
module.exports = mod(); | ||||
else if (typeof define == "function" && define.amd) // AMD | ||||
return define([], mod); | ||||
else // Plain browser env | ||||
this.CodeMirror = mod(); | ||||
})(function() { | ||||
"use strict"; | ||||
// BROWSER SNIFFING | ||||
// Kludges for bugs and behavior differences that can't be feature | ||||
// detected are enabled based on userAgent etc sniffing. | ||||
var gecko = /gecko\/\d/i.test(navigator.userAgent); | ||||
var ie_upto10 = /MSIE \d/.test(navigator.userAgent); | ||||
var ie_11up = /Trident\/(?:[7-9]|\d{2,})\..*rv:(\d+)/.exec(navigator.userAgent); | ||||
var ie = ie_upto10 || ie_11up; | ||||
var ie_version = ie && (ie_upto10 ? document.documentMode || 6 : ie_11up[1]); | ||||
var webkit = /WebKit\//.test(navigator.userAgent); | ||||
var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); | ||||
var chrome = /Chrome\//.test(navigator.userAgent); | ||||
var presto = /Opera\//.test(navigator.userAgent); | ||||
var safari = /Apple Computer/.test(navigator.vendor); | ||||
var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent); | ||||
var phantom = /PhantomJS/.test(navigator.userAgent); | ||||
var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent); | ||||
// This is woefully incomplete. Suggestions for alternative methods welcome. | ||||
var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent); | ||||
var mac = ios || /Mac/.test(navigator.platform); | ||||
var windows = /win/i.test(navigator.platform); | ||||
var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/); | ||||
if (presto_version) presto_version = Number(presto_version[1]); | ||||
if (presto_version && presto_version >= 15) { presto = false; webkit = true; } | ||||
// Some browsers use the wrong event properties to signal cmd/ctrl on OS X | ||||
var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11)); | ||||
var captureRightClick = gecko || (ie && ie_version >= 9); | ||||
// Optimize some code when these features are not used. | ||||
var sawReadOnlySpans = false, sawCollapsedSpans = false; | ||||
// EDITOR CONSTRUCTOR | ||||
// A CodeMirror instance represents an editor. This is the object | ||||
// that user code is usually dealing with. | ||||
function CodeMirror(place, options) { | ||||
if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); | ||||
this.options = options = options ? copyObj(options) : {}; | ||||
// Determine effective options based on given values and defaults. | ||||
copyObj(defaults, options, false); | ||||
setGuttersForLineNumbers(options); | ||||
var doc = options.value; | ||||
if (typeof doc == "string") doc = new Doc(doc, options.mode); | ||||
this.doc = doc; | ||||
var input = new CodeMirror.inputStyles[options.inputStyle](this); | ||||
var display = this.display = new Display(place, doc, input); | ||||
display.wrapper.CodeMirror = this; | ||||
updateGutters(this); | ||||
themeChanged(this); | ||||
if (options.lineWrapping) | ||||
this.display.wrapper.className += " CodeMirror-wrap"; | ||||
if (options.autofocus && !mobile) display.input.focus(); | ||||
initScrollbars(this); | ||||
this.state = { | ||||
keyMaps: [], // stores maps added by addKeyMap | ||||
overlays: [], // highlighting overlays, as added by addOverlay | ||||
modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info | ||||
overwrite: false, | ||||
delayingBlurEvent: false, | ||||
focused: false, | ||||
suppressEdits: false, // used to disable editing during key handlers when in readOnly mode | ||||
pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in input.poll | ||||
draggingText: false, | ||||
highlight: new Delayed(), // stores highlight worker timeout | ||||
keySeq: null, // Unfinished key sequence | ||||
specialChars: null | ||||
}; | ||||
var cm = this; | ||||
// Override magic textarea content restore that IE sometimes does | ||||
// on our hidden textarea on reload | ||||
if (ie && ie_version < 11) setTimeout(function() { cm.display.input.reset(true); }, 20); | ||||
registerEventHandlers(this); | ||||
ensureGlobalHandlers(); | ||||
startOperation(this); | ||||
this.curOp.forceUpdate = true; | ||||
attachDoc(this, doc); | ||||
if ((options.autofocus && !mobile) || cm.hasFocus()) | ||||
setTimeout(bind(onFocus, this), 20); | ||||
else | ||||
onBlur(this); | ||||
for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt)) | ||||
optionHandlers[opt](this, options[opt], Init); | ||||
maybeUpdateLineNumberWidth(this); | ||||
if (options.finishInit) options.finishInit(this); | ||||
for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); | ||||
endOperation(this); | ||||
// Suppress optimizelegibility in Webkit, since it breaks text | ||||
// measuring on line wrapping boundaries. | ||||
if (webkit && options.lineWrapping && | ||||
getComputedStyle(display.lineDiv).textRendering == "optimizelegibility") | ||||
display.lineDiv.style.textRendering = "auto"; | ||||
} | ||||
// DISPLAY CONSTRUCTOR | ||||
// The display handles the DOM integration, both for input reading | ||||
// and content drawing. It holds references to DOM nodes and | ||||
// display-related state. | ||||
function Display(place, doc, input) { | ||||
var d = this; | ||||
this.input = input; | ||||
// Covers bottom-right square when both scrollbars are present. | ||||
d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); | ||||
d.scrollbarFiller.setAttribute("cm-not-content", "true"); | ||||
// Covers bottom of gutter when coverGutterNextToScrollbar is on | ||||
// and h scrollbar is present. | ||||
d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); | ||||
d.gutterFiller.setAttribute("cm-not-content", "true"); | ||||
// Will contain the actual code, positioned to cover the viewport. | ||||
d.lineDiv = elt("div", null, "CodeMirror-code"); | ||||
// Elements are added to these to represent selection and cursors. | ||||
d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); | ||||
d.cursorDiv = elt("div", null, "CodeMirror-cursors"); | ||||
// A visibility: hidden element used to find the size of things. | ||||
d.measure = elt("div", null, "CodeMirror-measure"); | ||||
// When lines outside of the viewport are measured, they are drawn in this. | ||||
d.lineMeasure = elt("div", null, "CodeMirror-measure"); | ||||
// Wraps everything that needs to exist inside the vertically-padded coordinate system | ||||
d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv], | ||||
null, "position: relative; outline: none"); | ||||
// Moved around its parent to cover visible view. | ||||
d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); | ||||
// Set to the height of the document, allowing scrolling. | ||||
d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); | ||||
d.sizerWidth = null; | ||||
// Behavior of elts with overflow: auto and padding is | ||||
// inconsistent across browsers. This is used to ensure the | ||||
// scrollable area is big enough. | ||||
d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerGap + "px; width: 1px;"); | ||||
// Will contain the gutters, if any. | ||||
d.gutters = elt("div", null, "CodeMirror-gutters"); | ||||
d.lineGutter = null; | ||||
// Actual scrollable element. | ||||
d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); | ||||
d.scroller.setAttribute("tabIndex", "-1"); | ||||
// The element in which the editor lives. | ||||
d.wrapper = elt("div", [d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); | ||||
// Work around IE7 z-index bug (not perfect, hence IE7 not really being supported) | ||||
if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } | ||||
if (!webkit && !(gecko && mobile)) d.scroller.draggable = true; | ||||
if (place) { | ||||
if (place.appendChild) place.appendChild(d.wrapper); | ||||
else place(d.wrapper); | ||||
} | ||||
// Current rendered range (may be bigger than the view window). | ||||
d.viewFrom = d.viewTo = doc.first; | ||||
d.reportedViewFrom = d.reportedViewTo = doc.first; | ||||
// Information about the rendered lines. | ||||
d.view = []; | ||||
d.renderedView = null; | ||||
// Holds info about a single rendered line when it was rendered | ||||
// for measurement, while not in view. | ||||
d.externalMeasured = null; | ||||
// Empty space (in pixels) above the view | ||||
d.viewOffset = 0; | ||||
d.lastWrapHeight = d.lastWrapWidth = 0; | ||||
d.updateLineNumbers = null; | ||||
d.nativeBarWidth = d.barHeight = d.barWidth = 0; | ||||
d.scrollbarsClipped = false; | ||||
// Used to only resize the line number gutter when necessary (when | ||||
// the amount of lines crosses a boundary that makes its width change) | ||||
d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null; | ||||
// Set to true when a non-horizontal-scrolling line widget is | ||||
// added. As an optimization, line widget aligning is skipped when | ||||
// this is false. | ||||
d.alignWidgets = false; | ||||
d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; | ||||
// Tracks the maximum line length so that the horizontal scrollbar | ||||
// can be kept static when scrolling. | ||||
d.maxLine = null; | ||||
d.maxLineLength = 0; | ||||
d.maxLineChanged = false; | ||||
// Used for measuring wheel scrolling granularity | ||||
d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; | ||||
// True when shift is held down. | ||||
d.shift = false; | ||||
// Used to track whether anything happened since the context menu | ||||
// was opened. | ||||
d.selForContextMenu = null; | ||||
d.activeTouch = null; | ||||
input.init(d); | ||||
} | ||||
// STATE UPDATES | ||||
// Used to get the editor into a consistent state again when options change. | ||||
function loadMode(cm) { | ||||
cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption); | ||||
resetModeState(cm); | ||||
} | ||||
function resetModeState(cm) { | ||||
cm.doc.iter(function(line) { | ||||
if (line.stateAfter) line.stateAfter = null; | ||||
if (line.styles) line.styles = null; | ||||
}); | ||||
cm.doc.frontier = cm.doc.first; | ||||
startWorker(cm, 100); | ||||
cm.state.modeGen++; | ||||
if (cm.curOp) regChange(cm); | ||||
} | ||||
function wrappingChanged(cm) { | ||||
if (cm.options.lineWrapping) { | ||||
addClass(cm.display.wrapper, "CodeMirror-wrap"); | ||||
cm.display.sizer.style.minWidth = ""; | ||||
cm.display.sizerWidth = null; | ||||
} else { | ||||
rmClass(cm.display.wrapper, "CodeMirror-wrap"); | ||||
findMaxLine(cm); | ||||
} | ||||
estimateLineHeights(cm); | ||||
regChange(cm); | ||||
clearCaches(cm); | ||||
setTimeout(function(){updateScrollbars(cm);}, 100); | ||||
} | ||||
// Returns a function that estimates the height of a line, to use as | ||||
// first approximation until the line becomes visible (and is thus | ||||
// properly measurable). | ||||
function estimateHeight(cm) { | ||||
var th = textHeight(cm.display), wrapping = cm.options.lineWrapping; | ||||
var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3); | ||||
return function(line) { | ||||
if (lineIsHidden(cm.doc, line)) return 0; | ||||
var widgetsHeight = 0; | ||||
if (line.widgets) for (var i = 0; i < line.widgets.length; i++) { | ||||
if (line.widgets[i].height) widgetsHeight += line.widgets[i].height; | ||||
} | ||||
if (wrapping) | ||||
return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th; | ||||
else | ||||
return widgetsHeight + th; | ||||
}; | ||||
} | ||||
function estimateLineHeights(cm) { | ||||
var doc = cm.doc, est = estimateHeight(cm); | ||||
doc.iter(function(line) { | ||||
var estHeight = est(line); | ||||
if (estHeight != line.height) updateLineHeight(line, estHeight); | ||||
}); | ||||
} | ||||
function themeChanged(cm) { | ||||
cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") + | ||||
cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-"); | ||||
clearCaches(cm); | ||||
} | ||||
function guttersChanged(cm) { | ||||
updateGutters(cm); | ||||
regChange(cm); | ||||
setTimeout(function(){alignHorizontally(cm);}, 20); | ||||
} | ||||
// Rebuild the gutter elements, ensure the margin to the left of the | ||||
// code matches their width. | ||||
function updateGutters(cm) { | ||||
var gutters = cm.display.gutters, specs = cm.options.gutters; | ||||
removeChildren(gutters); | ||||
for (var i = 0; i < specs.length; ++i) { | ||||
var gutterClass = specs[i]; | ||||
var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass)); | ||||
if (gutterClass == "CodeMirror-linenumbers") { | ||||
cm.display.lineGutter = gElt; | ||||
gElt.style.width = (cm.display.lineNumWidth || 1) + "px"; | ||||
} | ||||
} | ||||
gutters.style.display = i ? "" : "none"; | ||||
updateGutterSpace(cm); | ||||
} | ||||
function updateGutterSpace(cm) { | ||||
var width = cm.display.gutters.offsetWidth; | ||||
cm.display.sizer.style.marginLeft = width + "px"; | ||||
} | ||||
// Compute the character length of a line, taking into account | ||||
// collapsed ranges (see markText) that might hide parts, and join | ||||
// other lines onto it. | ||||
function lineLength(line) { | ||||
if (line.height == 0) return 0; | ||||
var len = line.text.length, merged, cur = line; | ||||
while (merged = collapsedSpanAtStart(cur)) { | ||||
var found = merged.find(0, true); | ||||
cur = found.from.line; | ||||
len += found.from.ch - found.to.ch; | ||||
} | ||||
cur = line; | ||||
while (merged = collapsedSpanAtEnd(cur)) { | ||||
var found = merged.find(0, true); | ||||
len -= cur.text.length - found.from.ch; | ||||
cur = found.to.line; | ||||
len += cur.text.length - found.to.ch; | ||||
} | ||||
return len; | ||||
} | ||||
// Find the longest line in the document. | ||||
function findMaxLine(cm) { | ||||
var d = cm.display, doc = cm.doc; | ||||
d.maxLine = getLine(doc, doc.first); | ||||
d.maxLineLength = lineLength(d.maxLine); | ||||
d.maxLineChanged = true; | ||||
doc.iter(function(line) { | ||||
var len = lineLength(line); | ||||
if (len > d.maxLineLength) { | ||||
d.maxLineLength = len; | ||||
d.maxLine = line; | ||||
} | ||||
}); | ||||
} | ||||
// Make sure the gutters options contains the element | ||||
// "CodeMirror-linenumbers" when the lineNumbers option is true. | ||||
function setGuttersForLineNumbers(options) { | ||||
var found = indexOf(options.gutters, "CodeMirror-linenumbers"); | ||||
if (found == -1 && options.lineNumbers) { | ||||
options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]); | ||||
} else if (found > -1 && !options.lineNumbers) { | ||||
options.gutters = options.gutters.slice(0); | ||||
options.gutters.splice(found, 1); | ||||
} | ||||
} | ||||
// SCROLLBARS | ||||
// Prepare DOM reads needed to update the scrollbars. Done in one | ||||
// shot to minimize update/measure roundtrips. | ||||
function measureForScrollbars(cm) { | ||||
var d = cm.display, gutterW = d.gutters.offsetWidth; | ||||
var docH = Math.round(cm.doc.height + paddingVert(cm.display)); | ||||
return { | ||||
clientHeight: d.scroller.clientHeight, | ||||
viewHeight: d.wrapper.clientHeight, | ||||
scrollWidth: d.scroller.scrollWidth, clientWidth: d.scroller.clientWidth, | ||||
viewWidth: d.wrapper.clientWidth, | ||||
barLeft: cm.options.fixedGutter ? gutterW : 0, | ||||
docHeight: docH, | ||||
scrollHeight: docH + scrollGap(cm) + d.barHeight, | ||||
nativeBarWidth: d.nativeBarWidth, | ||||
gutterWidth: gutterW | ||||
}; | ||||
} | ||||
function NativeScrollbars(place, scroll, cm) { | ||||
this.cm = cm; | ||||
var vert = this.vert = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar"); | ||||
var horiz = this.horiz = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar"); | ||||
place(vert); place(horiz); | ||||
on(vert, "scroll", function() { | ||||
if (vert.clientHeight) scroll(vert.scrollTop, "vertical"); | ||||
}); | ||||
on(horiz, "scroll", function() { | ||||
if (horiz.clientWidth) scroll(horiz.scrollLeft, "horizontal"); | ||||
}); | ||||
this.checkedOverlay = false; | ||||
// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). | ||||
if (ie && ie_version < 8) this.horiz.style.minHeight = this.vert.style.minWidth = "18px"; | ||||
} | ||||
NativeScrollbars.prototype = copyObj({ | ||||
update: function(measure) { | ||||
var needsH = measure.scrollWidth > measure.clientWidth + 1; | ||||
var needsV = measure.scrollHeight > measure.clientHeight + 1; | ||||
var sWidth = measure.nativeBarWidth; | ||||
if (needsV) { | ||||
this.vert.style.display = "block"; | ||||
this.vert.style.bottom = needsH ? sWidth + "px" : "0"; | ||||
var totalHeight = measure.viewHeight - (needsH ? sWidth : 0); | ||||
// A bug in IE8 can cause this value to be negative, so guard it. | ||||
this.vert.firstChild.style.height = | ||||
Math.max(0, measure.scrollHeight - measure.clientHeight + totalHeight) + "px"; | ||||
} else { | ||||
this.vert.style.display = ""; | ||||
this.vert.firstChild.style.height = "0"; | ||||
} | ||||
if (needsH) { | ||||
this.horiz.style.display = "block"; | ||||
this.horiz.style.right = needsV ? sWidth + "px" : "0"; | ||||
this.horiz.style.left = measure.barLeft + "px"; | ||||
var totalWidth = measure.viewWidth - measure.barLeft - (needsV ? sWidth : 0); | ||||
this.horiz.firstChild.style.width = | ||||
(measure.scrollWidth - measure.clientWidth + totalWidth) + "px"; | ||||
} else { | ||||
this.horiz.style.display = ""; | ||||
this.horiz.firstChild.style.width = "0"; | ||||
} | ||||
if (!this.checkedOverlay && measure.clientHeight > 0) { | ||||
if (sWidth == 0) this.overlayHack(); | ||||
this.checkedOverlay = true; | ||||
} | ||||
return {right: needsV ? sWidth : 0, bottom: needsH ? sWidth : 0}; | ||||
}, | ||||
setScrollLeft: function(pos) { | ||||
if (this.horiz.scrollLeft != pos) this.horiz.scrollLeft = pos; | ||||
}, | ||||
setScrollTop: function(pos) { | ||||
if (this.vert.scrollTop != pos) this.vert.scrollTop = pos; | ||||
}, | ||||
overlayHack: function() { | ||||
var w = mac && !mac_geMountainLion ? "12px" : "18px"; | ||||
this.horiz.style.minHeight = this.vert.style.minWidth = w; | ||||
var self = this; | ||||
var barMouseDown = function(e) { | ||||
if (e_target(e) != self.vert && e_target(e) != self.horiz) | ||||
operation(self.cm, onMouseDown)(e); | ||||
}; | ||||
on(this.vert, "mousedown", barMouseDown); | ||||
on(this.horiz, "mousedown", barMouseDown); | ||||
}, | ||||
clear: function() { | ||||
var parent = this.horiz.parentNode; | ||||
parent.removeChild(this.horiz); | ||||
parent.removeChild(this.vert); | ||||
} | ||||
}, NativeScrollbars.prototype); | ||||
function NullScrollbars() {} | ||||
NullScrollbars.prototype = copyObj({ | ||||
update: function() { return {bottom: 0, right: 0}; }, | ||||
setScrollLeft: function() {}, | ||||
setScrollTop: function() {}, | ||||
clear: function() {} | ||||
}, NullScrollbars.prototype); | ||||
CodeMirror.scrollbarModel = {"native": NativeScrollbars, "null": NullScrollbars}; | ||||
function initScrollbars(cm) { | ||||
if (cm.display.scrollbars) { | ||||
cm.display.scrollbars.clear(); | ||||
if (cm.display.scrollbars.addClass) | ||||
rmClass(cm.display.wrapper, cm.display.scrollbars.addClass); | ||||
} | ||||
cm.display.scrollbars = new CodeMirror.scrollbarModel[cm.options.scrollbarStyle](function(node) { | ||||
cm.display.wrapper.insertBefore(node, cm.display.scrollbarFiller); | ||||
// Prevent clicks in the scrollbars from killing focus | ||||
on(node, "mousedown", function() { | ||||
if (cm.state.focused) setTimeout(function() { cm.display.input.focus(); }, 0); | ||||
}); | ||||
node.setAttribute("cm-not-content", "true"); | ||||
}, function(pos, axis) { | ||||
if (axis == "horizontal") setScrollLeft(cm, pos); | ||||
else setScrollTop(cm, pos); | ||||
}, cm); | ||||
if (cm.display.scrollbars.addClass) | ||||
addClass(cm.display.wrapper, cm.display.scrollbars.addClass); | ||||
} | ||||
function updateScrollbars(cm, measure) { | ||||
if (!measure) measure = measureForScrollbars(cm); | ||||
var startWidth = cm.display.barWidth, startHeight = cm.display.barHeight; | ||||
updateScrollbarsInner(cm, measure); | ||||
for (var i = 0; i < 4 && startWidth != cm.display.barWidth || startHeight != cm.display.barHeight; i++) { | ||||
if (startWidth != cm.display.barWidth && cm.options.lineWrapping) | ||||
updateHeightsInViewport(cm); | ||||
updateScrollbarsInner(cm, measureForScrollbars(cm)); | ||||
startWidth = cm.display.barWidth; startHeight = cm.display.barHeight; | ||||
} | ||||
} | ||||
// Re-synchronize the fake scrollbars with the actual size of the | ||||
// content. | ||||
function updateScrollbarsInner(cm, measure) { | ||||
var d = cm.display; | ||||
var sizes = d.scrollbars.update(measure); | ||||
d.sizer.style.paddingRight = (d.barWidth = sizes.right) + "px"; | ||||
d.sizer.style.paddingBottom = (d.barHeight = sizes.bottom) + "px"; | ||||
if (sizes.right && sizes.bottom) { | ||||
d.scrollbarFiller.style.display = "block"; | ||||
d.scrollbarFiller.style.height = sizes.bottom + "px"; | ||||
d.scrollbarFiller.style.width = sizes.right + "px"; | ||||
} else d.scrollbarFiller.style.display = ""; | ||||
if (sizes.bottom && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { | ||||
d.gutterFiller.style.display = "block"; | ||||
d.gutterFiller.style.height = sizes.bottom + "px"; | ||||
d.gutterFiller.style.width = measure.gutterWidth + "px"; | ||||
} else d.gutterFiller.style.display = ""; | ||||
} | ||||
// Compute the lines that are visible in a given viewport (defaults | ||||
// the the current scroll position). viewport may contain top, | ||||
// height, and ensure (see op.scrollToPos) properties. | ||||
function visibleLines(display, doc, viewport) { | ||||
var top = viewport && viewport.top != null ? Math.max(0, viewport.top) : display.scroller.scrollTop; | ||||
top = Math.floor(top - paddingTop(display)); | ||||
var bottom = viewport && viewport.bottom != null ? viewport.bottom : top + display.wrapper.clientHeight; | ||||
var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom); | ||||
// Ensure is a {from: {line, ch}, to: {line, ch}} object, and | ||||
// forces those lines into the viewport (if possible). | ||||
if (viewport && viewport.ensure) { | ||||
var ensureFrom = viewport.ensure.from.line, ensureTo = viewport.ensure.to.line; | ||||
if (ensureFrom < from) { | ||||
from = ensureFrom; | ||||
to = lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight); | ||||
} else if (Math.min(ensureTo, doc.lastLine()) >= to) { | ||||
from = lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight); | ||||
to = ensureTo; | ||||
} | ||||
} | ||||
return {from: from, to: Math.max(to, from + 1)}; | ||||
} | ||||
// LINE NUMBERS | ||||
// Re-align line numbers and gutter marks to compensate for | ||||
// horizontal scrolling. | ||||
function alignHorizontally(cm) { | ||||
var display = cm.display, view = display.view; | ||||
if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return; | ||||
var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft; | ||||
var gutterW = display.gutters.offsetWidth, left = comp + "px"; | ||||
for (var i = 0; i < view.length; i++) if (!view[i].hidden) { | ||||
if (cm.options.fixedGutter && view[i].gutter) | ||||
view[i].gutter.style.left = left; | ||||
var align = view[i].alignable; | ||||
if (align) for (var j = 0; j < align.length; j++) | ||||
align[j].style.left = left; | ||||
} | ||||
if (cm.options.fixedGutter) | ||||
display.gutters.style.left = (comp + gutterW) + "px"; | ||||
} | ||||
// Used to ensure that the line number gutter is still the right | ||||
// size for the current document size. Returns true when an update | ||||
// is needed. | ||||
function maybeUpdateLineNumberWidth(cm) { | ||||
if (!cm.options.lineNumbers) return false; | ||||
var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display; | ||||
if (last.length != display.lineNumChars) { | ||||
var test = display.measure.appendChild(elt("div", [elt("div", last)], | ||||
"CodeMirror-linenumber CodeMirror-gutter-elt")); | ||||
var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW; | ||||
display.lineGutter.style.width = ""; | ||||
display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding) + 1; | ||||
display.lineNumWidth = display.lineNumInnerWidth + padding; | ||||
display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; | ||||
display.lineGutter.style.width = display.lineNumWidth + "px"; | ||||
updateGutterSpace(cm); | ||||
return true; | ||||
} | ||||
return false; | ||||
} | ||||
function lineNumberFor(options, i) { | ||||
return String(options.lineNumberFormatter(i + options.firstLineNumber)); | ||||
} | ||||
// Computes display.scroller.scrollLeft + display.gutters.offsetWidth, | ||||
// but using getBoundingClientRect to get a sub-pixel-accurate | ||||
// result. | ||||
function compensateForHScroll(display) { | ||||
return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left; | ||||
} | ||||
// DISPLAY DRAWING | ||||
function DisplayUpdate(cm, viewport, force) { | ||||
var display = cm.display; | ||||
this.viewport = viewport; | ||||
// Store some values that we'll need later (but don't want to force a relayout for) | ||||
this.visible = visibleLines(display, cm.doc, viewport); | ||||
this.editorIsHidden = !display.wrapper.offsetWidth; | ||||
this.wrapperHeight = display.wrapper.clientHeight; | ||||
this.wrapperWidth = display.wrapper.clientWidth; | ||||
this.oldDisplayWidth = displayWidth(cm); | ||||
this.force = force; | ||||
this.dims = getDimensions(cm); | ||||
this.events = []; | ||||
} | ||||
DisplayUpdate.prototype.signal = function(emitter, type) { | ||||
if (hasHandler(emitter, type)) | ||||
this.events.push(arguments); | ||||
}; | ||||
DisplayUpdate.prototype.finish = function() { | ||||
for (var i = 0; i < this.events.length; i++) | ||||
signal.apply(null, this.events[i]); | ||||
}; | ||||
function maybeClipScrollbars(cm) { | ||||
var display = cm.display; | ||||
if (!display.scrollbarsClipped && display.scroller.offsetWidth) { | ||||
display.nativeBarWidth = display.scroller.offsetWidth - display.scroller.clientWidth; | ||||
display.heightForcer.style.height = scrollGap(cm) + "px"; | ||||
display.sizer.style.marginBottom = -display.nativeBarWidth + "px"; | ||||
display.sizer.style.borderRightWidth = scrollGap(cm) + "px"; | ||||
display.scrollbarsClipped = true; | ||||
} | ||||
} | ||||
// Does the actual updating of the line display. Bails out | ||||
// (returning false) when there is nothing to be done and forced is | ||||
// false. | ||||
function updateDisplayIfNeeded(cm, update) { | ||||
var display = cm.display, doc = cm.doc; | ||||
if (update.editorIsHidden) { | ||||
resetView(cm); | ||||
return false; | ||||
} | ||||
// Bail out if the visible area is already rendered and nothing changed. | ||||
if (!update.force && | ||||
update.visible.from >= display.viewFrom && update.visible.to <= display.viewTo && | ||||
(display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) && | ||||
display.renderedView == display.view && countDirtyView(cm) == 0) | ||||
return false; | ||||
if (maybeUpdateLineNumberWidth(cm)) { | ||||
resetView(cm); | ||||
update.dims = getDimensions(cm); | ||||
} | ||||
// Compute a suitable new viewport (from & to) | ||||
var end = doc.first + doc.size; | ||||
var from = Math.max(update.visible.from - cm.options.viewportMargin, doc.first); | ||||
var to = Math.min(end, update.visible.to + cm.options.viewportMargin); | ||||
if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom); | ||||
if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo); | ||||
if (sawCollapsedSpans) { | ||||
from = visualLineNo(cm.doc, from); | ||||
to = visualLineEndNo(cm.doc, to); | ||||
} | ||||
var different = from != display.viewFrom || to != display.viewTo || | ||||
display.lastWrapHeight != update.wrapperHeight || display.lastWrapWidth != update.wrapperWidth; | ||||
adjustView(cm, from, to); | ||||
display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom)); | ||||
// Position the mover div to align with the current scroll position | ||||
cm.display.mover.style.top = display.viewOffset + "px"; | ||||
var toUpdate = countDirtyView(cm); | ||||
if (!different && toUpdate == 0 && !update.force && display.renderedView == display.view && | ||||
(display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo)) | ||||
return false; | ||||
// For big changes, we hide the enclosing element during the | ||||
// update, since that speeds up the operations on most browsers. | ||||
var focused = activeElt(); | ||||
if (toUpdate > 4) display.lineDiv.style.display = "none"; | ||||
patchDisplay(cm, display.updateLineNumbers, update.dims); | ||||
if (toUpdate > 4) display.lineDiv.style.display = ""; | ||||
display.renderedView = display.view; | ||||
// There might have been a widget with a focused element that got | ||||
// hidden or updated, if so re-focus it. | ||||
if (focused && activeElt() != focused && focused.offsetHeight) focused.focus(); | ||||
// Prevent selection and cursors from interfering with the scroll | ||||
// width and height. | ||||
removeChildren(display.cursorDiv); | ||||
removeChildren(display.selectionDiv); | ||||
display.gutters.style.height = 0; | ||||
if (different) { | ||||
display.lastWrapHeight = update.wrapperHeight; | ||||
display.lastWrapWidth = update.wrapperWidth; | ||||
startWorker(cm, 400); | ||||
} | ||||
display.updateLineNumbers = null; | ||||
return true; | ||||
} | ||||
function postUpdateDisplay(cm, update) { | ||||
var viewport = update.viewport; | ||||
for (var first = true;; first = false) { | ||||
if (!first || !cm.options.lineWrapping || update.oldDisplayWidth == displayWidth(cm)) { | ||||
// Clip forced viewport to actual scrollable area. | ||||
if (viewport && viewport.top != null) | ||||
viewport = {top: Math.min(cm.doc.height + paddingVert(cm.display) - displayHeight(cm), viewport.top)}; | ||||
// Updated line heights might result in the drawn area not | ||||
// actually covering the viewport. Keep looping until it does. | ||||
update.visible = visibleLines(cm.display, cm.doc, viewport); | ||||
if (update.visible.from >= cm.display.viewFrom && update.visible.to <= cm.display.viewTo) | ||||
break; | ||||
} | ||||
if (!updateDisplayIfNeeded(cm, update)) break; | ||||
updateHeightsInViewport(cm); | ||||
var barMeasure = measureForScrollbars(cm); | ||||
updateSelection(cm); | ||||
setDocumentHeight(cm, barMeasure); | ||||
updateScrollbars(cm, barMeasure); | ||||
} | ||||
update.signal(cm, "update", cm); | ||||
if (cm.display.viewFrom != cm.display.reportedViewFrom || cm.display.viewTo != cm.display.reportedViewTo) { | ||||
update.signal(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo); | ||||
cm.display.reportedViewFrom = cm.display.viewFrom; cm.display.reportedViewTo = cm.display.viewTo; | ||||
} | ||||
} | ||||
function updateDisplaySimple(cm, viewport) { | ||||
var update = new DisplayUpdate(cm, viewport); | ||||
if (updateDisplayIfNeeded(cm, update)) { | ||||
updateHeightsInViewport(cm); | ||||
postUpdateDisplay(cm, update); | ||||
var barMeasure = measureForScrollbars(cm); | ||||
updateSelection(cm); | ||||
setDocumentHeight(cm, barMeasure); | ||||
updateScrollbars(cm, barMeasure); | ||||
update.finish(); | ||||
} | ||||
} | ||||
function setDocumentHeight(cm, measure) { | ||||
cm.display.sizer.style.minHeight = measure.docHeight + "px"; | ||||
var total = measure.docHeight + cm.display.barHeight; | ||||
cm.display.heightForcer.style.top = total + "px"; | ||||
cm.display.gutters.style.height = Math.max(total + scrollGap(cm), measure.clientHeight) + "px"; | ||||
} | ||||
// Read the actual heights of the rendered lines, and update their | ||||
// stored heights to match. | ||||
function updateHeightsInViewport(cm) { | ||||
var display = cm.display; | ||||
var prevBottom = display.lineDiv.offsetTop; | ||||
for (var i = 0; i < display.view.length; i++) { | ||||
var cur = display.view[i], height; | ||||
if (cur.hidden) continue; | ||||
if (ie && ie_version < 8) { | ||||
var bot = cur.node.offsetTop + cur.node.offsetHeight; | ||||
height = bot - prevBottom; | ||||
prevBottom = bot; | ||||
} else { | ||||
var box = cur.node.getBoundingClientRect(); | ||||
height = box.bottom - box.top; | ||||
} | ||||
var diff = cur.line.height - height; | ||||
if (height < 2) height = textHeight(display); | ||||
if (diff > .001 || diff < -.001) { | ||||
updateLineHeight(cur.line, height); | ||||
updateWidgetHeight(cur.line); | ||||
if (cur.rest) for (var j = 0; j < cur.rest.length; j++) | ||||
updateWidgetHeight(cur.rest[j]); | ||||
} | ||||
} | ||||
} | ||||
// Read and store the height of line widgets associated with the | ||||
// given line. | ||||
function updateWidgetHeight(line) { | ||||
if (line.widgets) for (var i = 0; i < line.widgets.length; ++i) | ||||
line.widgets[i].height = line.widgets[i].node.offsetHeight; | ||||
} | ||||
// Do a bulk-read of the DOM positions and sizes needed to draw the | ||||
// view, so that we don't interleave reading and writing to the DOM. | ||||
function getDimensions(cm) { | ||||
var d = cm.display, left = {}, width = {}; | ||||
var gutterLeft = d.gutters.clientLeft; | ||||
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { | ||||
left[cm.options.gutters[i]] = n.offsetLeft + n.clientLeft + gutterLeft; | ||||
width[cm.options.gutters[i]] = n.clientWidth; | ||||
} | ||||
return {fixedPos: compensateForHScroll(d), | ||||
gutterTotalWidth: d.gutters.offsetWidth, | ||||
gutterLeft: left, | ||||
gutterWidth: width, | ||||
wrapperWidth: d.wrapper.clientWidth}; | ||||
} | ||||
// Sync the actual display DOM structure with display.view, removing | ||||
// nodes for lines that are no longer in view, and creating the ones | ||||
// that are not there yet, and updating the ones that are out of | ||||
// date. | ||||
function patchDisplay(cm, updateNumbersFrom, dims) { | ||||
var display = cm.display, lineNumbers = cm.options.lineNumbers; | ||||
var container = display.lineDiv, cur = container.firstChild; | ||||
function rm(node) { | ||||
var next = node.nextSibling; | ||||
// Works around a throw-scroll bug in OS X Webkit | ||||
if (webkit && mac && cm.display.currentWheelTarget == node) | ||||
node.style.display = "none"; | ||||
else | ||||
node.parentNode.removeChild(node); | ||||
return next; | ||||
} | ||||
var view = display.view, lineN = display.viewFrom; | ||||
// Loop over the elements in the view, syncing cur (the DOM nodes | ||||
// in display.lineDiv) with the view as we go. | ||||
for (var i = 0; i < view.length; i++) { | ||||
var lineView = view[i]; | ||||
if (lineView.hidden) { | ||||
} else if (!lineView.node || lineView.node.parentNode != container) { // Not drawn yet | ||||
var node = buildLineElement(cm, lineView, lineN, dims); | ||||
container.insertBefore(node, cur); | ||||
} else { // Already drawn | ||||
while (cur != lineView.node) cur = rm(cur); | ||||
var updateNumber = lineNumbers && updateNumbersFrom != null && | ||||
updateNumbersFrom <= lineN && lineView.lineNumber; | ||||
if (lineView.changes) { | ||||
if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false; | ||||
updateLineForChanges(cm, lineView, lineN, dims); | ||||
} | ||||
if (updateNumber) { | ||||
removeChildren(lineView.lineNumber); | ||||
lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN))); | ||||
} | ||||
cur = lineView.node.nextSibling; | ||||
} | ||||
lineN += lineView.size; | ||||
} | ||||
while (cur) cur = rm(cur); | ||||
} | ||||
// When an aspect of a line changes, a string is added to | ||||
// lineView.changes. This updates the relevant part of the line's | ||||
// DOM structure. | ||||
function updateLineForChanges(cm, lineView, lineN, dims) { | ||||
for (var j = 0; j < lineView.changes.length; j++) { | ||||
var type = lineView.changes[j]; | ||||
if (type == "text") updateLineText(cm, lineView); | ||||
else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims); | ||||
else if (type == "class") updateLineClasses(lineView); | ||||
else if (type == "widget") updateLineWidgets(cm, lineView, dims); | ||||
} | ||||
lineView.changes = null; | ||||
} | ||||
// Lines with gutter elements, widgets or a background class need to | ||||
// be wrapped, and have the extra elements added to the wrapper div | ||||
function ensureLineWrapped(lineView) { | ||||
if (lineView.node == lineView.text) { | ||||
lineView.node = elt("div", null, null, "position: relative"); | ||||
if (lineView.text.parentNode) | ||||
lineView.text.parentNode.replaceChild(lineView.node, lineView.text); | ||||
lineView.node.appendChild(lineView.text); | ||||
if (ie && ie_version < 8) lineView.node.style.zIndex = 2; | ||||
} | ||||
return lineView.node; | ||||
} | ||||
function updateLineBackground(lineView) { | ||||
var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass; | ||||
if (cls) cls += " CodeMirror-linebackground"; | ||||
if (lineView.background) { | ||||
if (cls) lineView.background.className = cls; | ||||
else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; } | ||||
} else if (cls) { | ||||
var wrap = ensureLineWrapped(lineView); | ||||
lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild); | ||||
} | ||||
} | ||||
// Wrapper around buildLineContent which will reuse the structure | ||||
// in display.externalMeasured when possible. | ||||
function getLineContent(cm, lineView) { | ||||
var ext = cm.display.externalMeasured; | ||||
if (ext && ext.line == lineView.line) { | ||||
cm.display.externalMeasured = null; | ||||
lineView.measure = ext.measure; | ||||
return ext.built; | ||||
} | ||||
return buildLineContent(cm, lineView); | ||||
} | ||||
// Redraw the line's text. Interacts with the background and text | ||||
// classes because the mode may output tokens that influence these | ||||
// classes. | ||||
function updateLineText(cm, lineView) { | ||||
var cls = lineView.text.className; | ||||
var built = getLineContent(cm, lineView); | ||||
if (lineView.text == lineView.node) lineView.node = built.pre; | ||||
lineView.text.parentNode.replaceChild(built.pre, lineView.text); | ||||
lineView.text = built.pre; | ||||
if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) { | ||||
lineView.bgClass = built.bgClass; | ||||
lineView.textClass = built.textClass; | ||||
updateLineClasses(lineView); | ||||
} else if (cls) { | ||||
lineView.text.className = cls; | ||||
} | ||||
} | ||||
function updateLineClasses(lineView) { | ||||
updateLineBackground(lineView); | ||||
if (lineView.line.wrapClass) | ||||
ensureLineWrapped(lineView).className = lineView.line.wrapClass; | ||||
else if (lineView.node != lineView.text) | ||||
lineView.node.className = ""; | ||||
var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass; | ||||
lineView.text.className = textClass || ""; | ||||
} | ||||
function updateLineGutter(cm, lineView, lineN, dims) { | ||||
if (lineView.gutter) { | ||||
lineView.node.removeChild(lineView.gutter); | ||||
lineView.gutter = null; | ||||
} | ||||
var markers = lineView.line.gutterMarkers; | ||||
if (cm.options.lineNumbers || markers) { | ||||
var wrap = ensureLineWrapped(lineView); | ||||
var gutterWrap = lineView.gutter = elt("div", null, "CodeMirror-gutter-wrapper", "left: " + | ||||
(cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + | ||||
"px; width: " + dims.gutterTotalWidth + "px"); | ||||
cm.display.input.setUneditable(gutterWrap); | ||||
wrap.insertBefore(gutterWrap, lineView.text); | ||||
if (lineView.line.gutterClass) | ||||
gutterWrap.className += " " + lineView.line.gutterClass; | ||||
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) | ||||
lineView.lineNumber = gutterWrap.appendChild( | ||||
elt("div", lineNumberFor(cm.options, lineN), | ||||
"CodeMirror-linenumber CodeMirror-gutter-elt", | ||||
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " | ||||
+ cm.display.lineNumInnerWidth + "px")); | ||||
if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) { | ||||
var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id]; | ||||
if (found) | ||||
gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " + | ||||
dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px")); | ||||
} | ||||
} | ||||
} | ||||
function updateLineWidgets(cm, lineView, dims) { | ||||
if (lineView.alignable) lineView.alignable = null; | ||||
for (var node = lineView.node.firstChild, next; node; node = next) { | ||||
var next = node.nextSibling; | ||||
if (node.className == "CodeMirror-linewidget") | ||||
lineView.node.removeChild(node); | ||||
} | ||||
insertLineWidgets(cm, lineView, dims); | ||||
} | ||||
// Build a line's DOM representation from scratch | ||||
function buildLineElement(cm, lineView, lineN, dims) { | ||||
var built = getLineContent(cm, lineView); | ||||
lineView.text = lineView.node = built.pre; | ||||
if (built.bgClass) lineView.bgClass = built.bgClass; | ||||
if (built.textClass) lineView.textClass = built.textClass; | ||||
updateLineClasses(lineView); | ||||
updateLineGutter(cm, lineView, lineN, dims); | ||||
insertLineWidgets(cm, lineView, dims); | ||||
return lineView.node; | ||||
} | ||||
// A lineView may contain multiple logical lines (when merged by | ||||
// collapsed spans). The widgets for all of them need to be drawn. | ||||
function insertLineWidgets(cm, lineView, dims) { | ||||
insertLineWidgetsFor(cm, lineView.line, lineView, dims, true); | ||||
if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++) | ||||
insertLineWidgetsFor(cm, lineView.rest[i], lineView, dims, false); | ||||
} | ||||
function insertLineWidgetsFor(cm, line, lineView, dims, allowAbove) { | ||||
if (!line.widgets) return; | ||||
var wrap = ensureLineWrapped(lineView); | ||||
for (var i = 0, ws = line.widgets; i < ws.length; ++i) { | ||||
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); | ||||
if (!widget.handleMouseEvents) node.setAttribute("cm-ignore-events", "true"); | ||||
positionLineWidget(widget, node, lineView, dims); | ||||
cm.display.input.setUneditable(node); | ||||
if (allowAbove && widget.above) | ||||
wrap.insertBefore(node, lineView.gutter || lineView.text); | ||||
else | ||||
wrap.appendChild(node); | ||||
signalLater(widget, "redraw"); | ||||
} | ||||
} | ||||
function positionLineWidget(widget, node, lineView, dims) { | ||||
if (widget.noHScroll) { | ||||
(lineView.alignable || (lineView.alignable = [])).push(node); | ||||
var width = dims.wrapperWidth; | ||||
node.style.left = dims.fixedPos + "px"; | ||||
if (!widget.coverGutter) { | ||||
width -= dims.gutterTotalWidth; | ||||
node.style.paddingLeft = dims.gutterTotalWidth + "px"; | ||||
} | ||||
node.style.width = width + "px"; | ||||
} | ||||
if (widget.coverGutter) { | ||||
node.style.zIndex = 5; | ||||
node.style.position = "relative"; | ||||
if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px"; | ||||
} | ||||
} | ||||
// POSITION OBJECT | ||||
// A Pos instance represents a position within the text. | ||||
var Pos = CodeMirror.Pos = function(line, ch) { | ||||
if (!(this instanceof Pos)) return new Pos(line, ch); | ||||
this.line = line; this.ch = ch; | ||||
}; | ||||
// Compare two positions, return 0 if they are the same, a negative | ||||
// number when a is less, and a positive number otherwise. | ||||
var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; }; | ||||
function copyPos(x) {return Pos(x.line, x.ch);} | ||||
function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; } | ||||
function minPos(a, b) { return cmp(a, b) < 0 ? a : b; } | ||||
// INPUT HANDLING | ||||
function ensureFocus(cm) { | ||||
if (!cm.state.focused) { cm.display.input.focus(); onFocus(cm); } | ||||
} | ||||
function isReadOnly(cm) { | ||||
return cm.options.readOnly || cm.doc.cantEdit; | ||||
} | ||||
// This will be set to an array of strings when copying, so that, | ||||
// when pasting, we know what kind of selections the copied text | ||||
// was made out of. | ||||
var lastCopied = null; | ||||
function applyTextInput(cm, inserted, deleted, sel, origin) { | ||||
var doc = cm.doc; | ||||
cm.display.shift = false; | ||||
if (!sel) sel = doc.sel; | ||||
var paste = cm.state.pasteIncoming || origin == "paste"; | ||||
var textLines = splitLines(inserted), multiPaste = null; | ||||
// When pasing N lines into N selections, insert one line per selection | ||||
if (paste && sel.ranges.length > 1) { | ||||
if (lastCopied && lastCopied.join("\n") == inserted) | ||||
multiPaste = sel.ranges.length % lastCopied.length == 0 && map(lastCopied, splitLines); | ||||
else if (textLines.length == sel.ranges.length) | ||||
multiPaste = map(textLines, function(l) { return [l]; }); | ||||
} | ||||
// Normal behavior is to insert the new text into every selection | ||||
for (var i = sel.ranges.length - 1; i >= 0; i--) { | ||||
var range = sel.ranges[i]; | ||||
var from = range.from(), to = range.to(); | ||||
if (range.empty()) { | ||||
if (deleted && deleted > 0) // Handle deletion | ||||
from = Pos(from.line, from.ch - deleted); | ||||
else if (cm.state.overwrite && !paste) // Handle overwrite | ||||
to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length)); | ||||
} | ||||
var updateInput = cm.curOp.updateInput; | ||||
var changeEvent = {from: from, to: to, text: multiPaste ? multiPaste[i % multiPaste.length] : textLines, | ||||
origin: origin || (paste ? "paste" : cm.state.cutIncoming ? "cut" : "+input")}; | ||||
makeChange(cm.doc, changeEvent); | ||||
signalLater(cm, "inputRead", cm, changeEvent); | ||||
} | ||||
if (inserted && !paste) | ||||
triggerElectric(cm, inserted); | ||||
ensureCursorVisible(cm); | ||||
cm.curOp.updateInput = updateInput; | ||||
cm.curOp.typing = true; | ||||
cm.state.pasteIncoming = cm.state.cutIncoming = false; | ||||
} | ||||
function handlePaste(e, cm) { | ||||
var pasted = e.clipboardData && e.clipboardData.getData("text/plain"); | ||||
if (pasted) { | ||||
e.preventDefault(); | ||||
runInOp(cm, function() { applyTextInput(cm, pasted, 0, null, "paste"); }); | ||||
return true; | ||||
} | ||||
} | ||||
function triggerElectric(cm, inserted) { | ||||
// When an 'electric' character is inserted, immediately trigger a reindent | ||||
if (!cm.options.electricChars || !cm.options.smartIndent) return; | ||||
var sel = cm.doc.sel; | ||||
for (var i = sel.ranges.length - 1; i >= 0; i--) { | ||||
var range = sel.ranges[i]; | ||||
if (range.head.ch > 100 || (i && sel.ranges[i - 1].head.line == range.head.line)) continue; | ||||
var mode = cm.getModeAt(range.head); | ||||
var indented = false; | ||||
if (mode.electricChars) { | ||||
for (var j = 0; j < mode.electricChars.length; j++) | ||||
if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) { | ||||
indented = indentLine(cm, range.head.line, "smart"); | ||||
break; | ||||
} | ||||
} else if (mode.electricInput) { | ||||
if (mode.electricInput.test(getLine(cm.doc, range.head.line).text.slice(0, range.head.ch))) | ||||
indented = indentLine(cm, range.head.line, "smart"); | ||||
} | ||||
if (indented) signalLater(cm, "electricInput", cm, range.head.line); | ||||
} | ||||
} | ||||
function copyableRanges(cm) { | ||||
var text = [], ranges = []; | ||||
for (var i = 0; i < cm.doc.sel.ranges.length; i++) { | ||||
var line = cm.doc.sel.ranges[i].head.line; | ||||
var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)}; | ||||
ranges.push(lineRange); | ||||
text.push(cm.getRange(lineRange.anchor, lineRange.head)); | ||||
} | ||||
return {text: text, ranges: ranges}; | ||||
} | ||||
function disableBrowserMagic(field) { | ||||
field.setAttribute("autocorrect", "off"); | ||||
field.setAttribute("autocapitalize", "off"); | ||||
field.setAttribute("spellcheck", "false"); | ||||
} | ||||
// TEXTAREA INPUT STYLE | ||||
function TextareaInput(cm) { | ||||
this.cm = cm; | ||||
// See input.poll and input.reset | ||||
this.prevInput = ""; | ||||
// Flag that indicates whether we expect input to appear real soon | ||||
// now (after some event like 'keypress' or 'input') and are | ||||
// polling intensively. | ||||
this.pollingFast = false; | ||||
// Self-resetting timeout for the poller | ||||
this.polling = new Delayed(); | ||||
// Tracks when input.reset has punted to just putting a short | ||||
// string into the textarea instead of the full selection. | ||||
this.inaccurateSelection = false; | ||||
// Used to work around IE issue with selection being forgotten when focus moves away from textarea | ||||
this.hasSelection = false; | ||||
this.composing = null; | ||||
}; | ||||
function hiddenTextarea() { | ||||
var te = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none"); | ||||
var div = elt("div", [te], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); | ||||
// The textarea is kept positioned near the cursor to prevent the | ||||
// fact that it'll be scrolled into view on input from scrolling | ||||
// our fake cursor out of view. On webkit, when wrap=off, paste is | ||||
// very slow. So make the area wide instead. | ||||
if (webkit) te.style.width = "1000px"; | ||||
else te.setAttribute("wrap", "off"); | ||||
// If border: 0; -- iOS fails to open keyboard (issue #1287) | ||||
if (ios) te.style.border = "1px solid black"; | ||||
disableBrowserMagic(te); | ||||
return div; | ||||
} | ||||
TextareaInput.prototype = copyObj({ | ||||
init: function(display) { | ||||
var input = this, cm = this.cm; | ||||
// Wraps and hides input textarea | ||||
var div = this.wrapper = hiddenTextarea(); | ||||
// The semihidden textarea that is focused when the editor is | ||||
// focused, and receives input. | ||||
var te = this.textarea = div.firstChild; | ||||
display.wrapper.insertBefore(div, display.wrapper.firstChild); | ||||
// Needed to hide big blue blinking cursor on Mobile Safari (doesn't seem to work in iOS 8 anymore) | ||||
if (ios) te.style.width = "0px"; | ||||
on(te, "input", function() { | ||||
if (ie && ie_version >= 9 && input.hasSelection) input.hasSelection = null; | ||||
input.poll(); | ||||
}); | ||||
on(te, "paste", function(e) { | ||||
if (handlePaste(e, cm)) return true; | ||||
cm.state.pasteIncoming = true; | ||||
input.fastPoll(); | ||||
}); | ||||
function prepareCopyCut(e) { | ||||
if (cm.somethingSelected()) { | ||||
lastCopied = cm.getSelections(); | ||||
if (input.inaccurateSelection) { | ||||
input.prevInput = ""; | ||||
input.inaccurateSelection = false; | ||||
te.value = lastCopied.join("\n"); | ||||
selectInput(te); | ||||
} | ||||
} else if (!cm.options.lineWiseCopyCut) { | ||||
return; | ||||
} else { | ||||
var ranges = copyableRanges(cm); | ||||
lastCopied = ranges.text; | ||||
if (e.type == "cut") { | ||||
cm.setSelections(ranges.ranges, null, sel_dontScroll); | ||||
} else { | ||||
input.prevInput = ""; | ||||
te.value = ranges.text.join("\n"); | ||||
selectInput(te); | ||||
} | ||||
} | ||||
if (e.type == "cut") cm.state.cutIncoming = true; | ||||
} | ||||
on(te, "cut", prepareCopyCut); | ||||
on(te, "copy", prepareCopyCut); | ||||
on(display.scroller, "paste", function(e) { | ||||
if (eventInWidget(display, e)) return; | ||||
cm.state.pasteIncoming = true; | ||||
input.focus(); | ||||
}); | ||||
// Prevent normal selection in the editor (we handle our own) | ||||
on(display.lineSpace, "selectstart", function(e) { | ||||
if (!eventInWidget(display, e)) e_preventDefault(e); | ||||
}); | ||||
on(te, "compositionstart", function() { | ||||
var start = cm.getCursor("from"); | ||||
input.composing = { | ||||
start: start, | ||||
range: cm.markText(start, cm.getCursor("to"), {className: "CodeMirror-composing"}) | ||||
}; | ||||
}); | ||||
on(te, "compositionend", function() { | ||||
if (input.composing) { | ||||
input.poll(); | ||||
input.composing.range.clear(); | ||||
input.composing = null; | ||||
} | ||||
}); | ||||
}, | ||||
prepareSelection: function() { | ||||
// Redraw the selection and/or cursor | ||||
var cm = this.cm, display = cm.display, doc = cm.doc; | ||||
var result = prepareSelection(cm); | ||||
// Move the hidden textarea near the cursor to prevent scrolling artifacts | ||||
if (cm.options.moveInputWithCursor) { | ||||
var headPos = cursorCoords(cm, doc.sel.primary().head, "div"); | ||||
var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect(); | ||||
result.teTop = Math.max(0, Math.min(display.wrapper.clientHeight - 10, | ||||
headPos.top + lineOff.top - wrapOff.top)); | ||||
result.teLeft = Math.max(0, Math.min(display.wrapper.clientWidth - 10, | ||||
headPos.left + lineOff.left - wrapOff.left)); | ||||
} | ||||
return result; | ||||
}, | ||||
showSelection: function(drawn) { | ||||
var cm = this.cm, display = cm.display; | ||||
removeChildrenAndAdd(display.cursorDiv, drawn.cursors); | ||||
removeChildrenAndAdd(display.selectionDiv, drawn.selection); | ||||
if (drawn.teTop != null) { | ||||
this.wrapper.style.top = drawn.teTop + "px"; | ||||
this.wrapper.style.left = drawn.teLeft + "px"; | ||||
} | ||||
}, | ||||
// Reset the input to correspond to the selection (or to be empty, | ||||
// when not typing and nothing is selected) | ||||
reset: function(typing) { | ||||
if (this.contextMenuPending) return; | ||||
var minimal, selected, cm = this.cm, doc = cm.doc; | ||||
if (cm.somethingSelected()) { | ||||
this.prevInput = ""; | ||||
var range = doc.sel.primary(); | ||||
minimal = hasCopyEvent && | ||||
(range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000); | ||||
var content = minimal ? "-" : selected || cm.getSelection(); | ||||
this.textarea.value = content; | ||||
if (cm.state.focused) selectInput(this.textarea); | ||||
if (ie && ie_version >= 9) this.hasSelection = content; | ||||
} else if (!typing) { | ||||
this.prevInput = this.textarea.value = ""; | ||||
if (ie && ie_version >= 9) this.hasSelection = null; | ||||
} | ||||
this.inaccurateSelection = minimal; | ||||
}, | ||||
getField: function() { return this.textarea; }, | ||||
supportsTouch: function() { return false; }, | ||||
focus: function() { | ||||
if (this.cm.options.readOnly != "nocursor" && (!mobile || activeElt() != this.textarea)) { | ||||
try { this.textarea.focus(); } | ||||
catch (e) {} // IE8 will throw if the textarea is display: none or not in DOM | ||||
} | ||||
}, | ||||
blur: function() { this.textarea.blur(); }, | ||||
resetPosition: function() { | ||||
this.wrapper.style.top = this.wrapper.style.left = 0; | ||||
}, | ||||
receivedFocus: function() { this.slowPoll(); }, | ||||
// Poll for input changes, using the normal rate of polling. This | ||||
// runs as long as the editor is focused. | ||||
slowPoll: function() { | ||||
var input = this; | ||||
if (input.pollingFast) return; | ||||
input.polling.set(this.cm.options.pollInterval, function() { | ||||
input.poll(); | ||||
if (input.cm.state.focused) input.slowPoll(); | ||||
}); | ||||
}, | ||||
// When an event has just come in that is likely to add or change | ||||
// something in the input textarea, we poll faster, to ensure that | ||||
// the change appears on the screen quickly. | ||||
fastPoll: function() { | ||||
var missed = false, input = this; | ||||
input.pollingFast = true; | ||||
function p() { | ||||
var changed = input.poll(); | ||||
if (!changed && !missed) {missed = true; input.polling.set(60, p);} | ||||
else {input.pollingFast = false; input.slowPoll();} | ||||
} | ||||
input.polling.set(20, p); | ||||
}, | ||||
// Read input from the textarea, and update the document to match. | ||||
// When something is selected, it is present in the textarea, and | ||||
// selected (unless it is huge, in which case a placeholder is | ||||
// used). When nothing is selected, the cursor sits after previously | ||||
// seen text (can be empty), which is stored in prevInput (we must | ||||
// not reset the textarea when typing, because that breaks IME). | ||||
poll: function() { | ||||
var cm = this.cm, input = this.textarea, prevInput = this.prevInput; | ||||
// Since this is called a *lot*, try to bail out as cheaply as | ||||
// possible when it is clear that nothing happened. hasSelection | ||||
// will be the case when there is a lot of text in the textarea, | ||||
// in which case reading its value would be expensive. | ||||
if (this.contextMenuPending || !cm.state.focused || | ||||
(hasSelection(input) && !prevInput) || | ||||
isReadOnly(cm) || cm.options.disableInput || cm.state.keySeq) | ||||
return false; | ||||
var text = input.value; | ||||
// If nothing changed, bail. | ||||
if (text == prevInput && !cm.somethingSelected()) return false; | ||||
// Work around nonsensical selection resetting in IE9/10, and | ||||
// inexplicable appearance of private area unicode characters on | ||||
// some key combos in Mac (#2689). | ||||
if (ie && ie_version >= 9 && this.hasSelection === text || | ||||
mac && /[\uf700-\uf7ff]/.test(text)) { | ||||
cm.display.input.reset(); | ||||
return false; | ||||
} | ||||
if (cm.doc.sel == cm.display.selForContextMenu) { | ||||
var first = text.charCodeAt(0); | ||||
if (first == 0x200b && !prevInput) prevInput = "\u200b"; | ||||
if (first == 0x21da) { this.reset(); return this.cm.execCommand("undo"); } | ||||
} | ||||
// Find the part of the input that is actually new | ||||
var same = 0, l = Math.min(prevInput.length, text.length); | ||||
while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; | ||||
var self = this; | ||||
runInOp(cm, function() { | ||||
applyTextInput(cm, text.slice(same), prevInput.length - same, | ||||
null, self.composing ? "*compose" : null); | ||||
// Don't leave long text in the textarea, since it makes further polling slow | ||||
if (text.length > 1000 || text.indexOf("\n") > -1) input.value = self.prevInput = ""; | ||||
else self.prevInput = text; | ||||
if (self.composing) { | ||||
self.composing.range.clear(); | ||||
self.composing.range = cm.markText(self.composing.start, cm.getCursor("to"), | ||||
{className: "CodeMirror-composing"}); | ||||
} | ||||
}); | ||||
return true; | ||||
}, | ||||
ensurePolled: function() { | ||||
if (this.pollingFast && this.poll()) this.pollingFast = false; | ||||
}, | ||||
onKeyPress: function() { | ||||
if (ie && ie_version >= 9) this.hasSelection = null; | ||||
this.fastPoll(); | ||||
}, | ||||
onContextMenu: function(e) { | ||||
var input = this, cm = input.cm, display = cm.display, te = input.textarea; | ||||
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; | ||||
if (!pos || presto) return; // Opera is difficult. | ||||
// Reset the current text selection only if the click is done outside of the selection | ||||
// and 'resetSelectionOnContextMenu' option is true. | ||||
var reset = cm.options.resetSelectionOnContextMenu; | ||||
if (reset && cm.doc.sel.contains(pos) == -1) | ||||
operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll); | ||||
var oldCSS = te.style.cssText; | ||||
input.wrapper.style.position = "absolute"; | ||||
te.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + | ||||
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " + | ||||
(ie ? "rgba(255, 255, 255, .05)" : "transparent") + | ||||
"; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);"; | ||||
if (webkit) var oldScrollY = window.scrollY; // Work around Chrome issue (#2712) | ||||
display.input.focus(); | ||||
if (webkit) window.scrollTo(null, oldScrollY); | ||||
display.input.reset(); | ||||
// Adds "Select all" to context menu in FF | ||||
if (!cm.somethingSelected()) te.value = input.prevInput = " "; | ||||
input.contextMenuPending = true; | ||||
display.selForContextMenu = cm.doc.sel; | ||||
clearTimeout(display.detectingSelectAll); | ||||
// Select-all will be greyed out if there's nothing to select, so | ||||
// this adds a zero-width space so that we can later check whether | ||||
// it got selected. | ||||
function prepareSelectAllHack() { | ||||
if (te.selectionStart != null) { | ||||
var selected = cm.somethingSelected(); | ||||
var extval = "\u200b" + (selected ? te.value : ""); | ||||
te.value = "\u21da"; // Used to catch context-menu undo | ||||
te.value = extval; | ||||
input.prevInput = selected ? "" : "\u200b"; | ||||
te.selectionStart = 1; te.selectionEnd = extval.length; | ||||
// Re-set this, in case some other handler touched the | ||||
// selection in the meantime. | ||||
display.selForContextMenu = cm.doc.sel; | ||||
} | ||||
} | ||||
function rehide() { | ||||
input.contextMenuPending = false; | ||||
input.wrapper.style.position = "relative"; | ||||
te.style.cssText = oldCSS; | ||||
if (ie && ie_version < 9) display.scrollbars.setScrollTop(display.scroller.scrollTop = scrollPos); | ||||
// Try to detect the user choosing select-all | ||||
if (te.selectionStart != null) { | ||||
if (!ie || (ie && ie_version < 9)) prepareSelectAllHack(); | ||||
var i = 0, poll = function() { | ||||
if (display.selForContextMenu == cm.doc.sel && te.selectionStart == 0 && | ||||
te.selectionEnd > 0 && input.prevInput == "\u200b") | ||||
operation(cm, commands.selectAll)(cm); | ||||
else if (i++ < 10) display.detectingSelectAll = setTimeout(poll, 500); | ||||
else display.input.reset(); | ||||
}; | ||||
display.detectingSelectAll = setTimeout(poll, 200); | ||||
} | ||||
} | ||||
if (ie && ie_version >= 9) prepareSelectAllHack(); | ||||
if (captureRightClick) { | ||||
e_stop(e); | ||||
var mouseup = function() { | ||||
off(window, "mouseup", mouseup); | ||||
setTimeout(rehide, 20); | ||||
}; | ||||
on(window, "mouseup", mouseup); | ||||
} else { | ||||
setTimeout(rehide, 50); | ||||
} | ||||
}, | ||||
setUneditable: nothing, | ||||
needsContentAttribute: false | ||||
}, TextareaInput.prototype); | ||||
// CONTENTEDITABLE INPUT STYLE | ||||
function ContentEditableInput(cm) { | ||||
this.cm = cm; | ||||
this.lastAnchorNode = this.lastAnchorOffset = this.lastFocusNode = this.lastFocusOffset = null; | ||||
this.polling = new Delayed(); | ||||
this.gracePeriod = false; | ||||
} | ||||
ContentEditableInput.prototype = copyObj({ | ||||
init: function(display) { | ||||
var input = this, cm = input.cm; | ||||
var div = input.div = display.lineDiv; | ||||
div.contentEditable = "true"; | ||||
disableBrowserMagic(div); | ||||
on(div, "paste", function(e) { handlePaste(e, cm); }) | ||||
on(div, "compositionstart", function(e) { | ||||
var data = e.data; | ||||
input.composing = {sel: cm.doc.sel, data: data, startData: data}; | ||||
if (!data) return; | ||||
var prim = cm.doc.sel.primary(); | ||||
var line = cm.getLine(prim.head.line); | ||||
var found = line.indexOf(data, Math.max(0, prim.head.ch - data.length)); | ||||
if (found > -1 && found <= prim.head.ch) | ||||
input.composing.sel = simpleSelection(Pos(prim.head.line, found), | ||||
Pos(prim.head.line, found + data.length)); | ||||
}); | ||||
on(div, "compositionupdate", function(e) { | ||||
input.composing.data = e.data; | ||||
}); | ||||
on(div, "compositionend", function(e) { | ||||
var ours = input.composing; | ||||
if (!ours) return; | ||||
if (e.data != ours.startData && !/\u200b/.test(e.data)) | ||||
ours.data = e.data; | ||||
// Need a small delay to prevent other code (input event, | ||||
// selection polling) from doing damage when fired right after | ||||
// compositionend. | ||||
setTimeout(function() { | ||||
if (!ours.handled) | ||||
input.applyComposition(ours); | ||||
if (input.composing == ours) | ||||
input.composing = null; | ||||
}, 50); | ||||
}); | ||||
on(div, "touchstart", function() { | ||||
input.forceCompositionEnd(); | ||||
}); | ||||
on(div, "input", function() { | ||||
if (input.composing) return; | ||||
if (!input.pollContent()) | ||||
runInOp(input.cm, function() {regChange(cm);}); | ||||
}); | ||||
function onCopyCut(e) { | ||||
if (cm.somethingSelected()) { | ||||
lastCopied = cm.getSelections(); | ||||
if (e.type == "cut") cm.replaceSelection("", null, "cut"); | ||||
} else if (!cm.options.lineWiseCopyCut) { | ||||
return; | ||||
} else { | ||||
var ranges = copyableRanges(cm); | ||||
lastCopied = ranges.text; | ||||
if (e.type == "cut") { | ||||
cm.operation(function() { | ||||
cm.setSelections(ranges.ranges, 0, sel_dontScroll); | ||||
cm.replaceSelection("", null, "cut"); | ||||
}); | ||||
} | ||||
} | ||||
// iOS exposes the clipboard API, but seems to discard content inserted into it | ||||
if (e.clipboardData && !ios) { | ||||
e.preventDefault(); | ||||
e.clipboardData.clearData(); | ||||
e.clipboardData.setData("text/plain", lastCopied.join("\n")); | ||||
} else { | ||||
// Old-fashioned briefly-focus-a-textarea hack | ||||
var kludge = hiddenTextarea(), te = kludge.firstChild; | ||||
cm.display.lineSpace.insertBefore(kludge, cm.display.lineSpace.firstChild); | ||||
te.value = lastCopied.join("\n"); | ||||
var hadFocus = document.activeElement; | ||||
selectInput(te); | ||||
setTimeout(function() { | ||||
cm.display.lineSpace.removeChild(kludge); | ||||
hadFocus.focus(); | ||||
}, 50); | ||||
} | ||||
} | ||||
on(div, "copy", onCopyCut); | ||||
on(div, "cut", onCopyCut); | ||||
}, | ||||
prepareSelection: function() { | ||||
var result = prepareSelection(this.cm, false); | ||||
result.focus = this.cm.state.focused; | ||||
return result; | ||||
}, | ||||
showSelection: function(info) { | ||||
if (!info || !this.cm.display.view.length) return; | ||||
if (info.focus) this.showPrimarySelection(); | ||||
this.showMultipleSelections(info); | ||||
}, | ||||
showPrimarySelection: function() { | ||||
var sel = window.getSelection(), prim = this.cm.doc.sel.primary(); | ||||
var curAnchor = domToPos(this.cm, sel.anchorNode, sel.anchorOffset); | ||||
var curFocus = domToPos(this.cm, sel.focusNode, sel.focusOffset); | ||||
if (curAnchor && !curAnchor.bad && curFocus && !curFocus.bad && | ||||
cmp(minPos(curAnchor, curFocus), prim.from()) == 0 && | ||||
cmp(maxPos(curAnchor, curFocus), prim.to()) == 0) | ||||
return; | ||||
var start = posToDOM(this.cm, prim.from()); | ||||
var end = posToDOM(this.cm, prim.to()); | ||||
if (!start && !end) return; | ||||
var view = this.cm.display.view; | ||||
var old = sel.rangeCount && sel.getRangeAt(0); | ||||
if (!start) { | ||||
start = {node: view[0].measure.map[2], offset: 0}; | ||||
} else if (!end) { // FIXME dangerously hacky | ||||
var measure = view[view.length - 1].measure; | ||||
var map = measure.maps ? measure.maps[measure.maps.length - 1] : measure.map; | ||||
end = {node: map[map.length - 1], offset: map[map.length - 2] - map[map.length - 3]}; | ||||
} | ||||
try { var rng = range(start.node, start.offset, end.offset, end.node); } | ||||
catch(e) {} // Our model of the DOM might be outdated, in which case the range we try to set can be impossible | ||||
if (rng) { | ||||
sel.removeAllRanges(); | ||||
sel.addRange(rng); | ||||
if (old && sel.anchorNode == null) sel.addRange(old); | ||||
else if (gecko) this.startGracePeriod(); | ||||
} | ||||
this.rememberSelection(); | ||||
}, | ||||
startGracePeriod: function() { | ||||
var input = this; | ||||
clearTimeout(this.gracePeriod); | ||||
this.gracePeriod = setTimeout(function() { | ||||
input.gracePeriod = false; | ||||
if (input.selectionChanged()) | ||||
input.cm.operation(function() { input.cm.curOp.selectionChanged = true; }); | ||||
}, 20); | ||||
}, | ||||
showMultipleSelections: function(info) { | ||||
removeChildrenAndAdd(this.cm.display.cursorDiv, info.cursors); | ||||
removeChildrenAndAdd(this.cm.display.selectionDiv, info.selection); | ||||
}, | ||||
rememberSelection: function() { | ||||
var sel = window.getSelection(); | ||||
this.lastAnchorNode = sel.anchorNode; this.lastAnchorOffset = sel.anchorOffset; | ||||
this.lastFocusNode = sel.focusNode; this.lastFocusOffset = sel.focusOffset; | ||||
}, | ||||
selectionInEditor: function() { | ||||
var sel = window.getSelection(); | ||||
if (!sel.rangeCount) return false; | ||||
var node = sel.getRangeAt(0).commonAncestorContainer; | ||||
return contains(this.div, node); | ||||
}, | ||||
focus: function() { | ||||
if (this.cm.options.readOnly != "nocursor") this.div.focus(); | ||||
}, | ||||
blur: function() { this.div.blur(); }, | ||||
getField: function() { return this.div; }, | ||||
supportsTouch: function() { return true; }, | ||||
receivedFocus: function() { | ||||
var input = this; | ||||
if (this.selectionInEditor()) | ||||
this.pollSelection(); | ||||
else | ||||
runInOp(this.cm, function() { input.cm.curOp.selectionChanged = true; }); | ||||
function poll() { | ||||
if (input.cm.state.focused) { | ||||
input.pollSelection(); | ||||
input.polling.set(input.cm.options.pollInterval, poll); | ||||
} | ||||
} | ||||
this.polling.set(this.cm.options.pollInterval, poll); | ||||
}, | ||||
selectionChanged: function() { | ||||
var sel = window.getSelection(); | ||||
return sel.anchorNode != this.lastAnchorNode || sel.anchorOffset != this.lastAnchorOffset || | ||||
sel.focusNode != this.lastFocusNode || sel.focusOffset != this.lastFocusOffset; | ||||
}, | ||||
pollSelection: function() { | ||||
if (!this.composing && !this.gracePeriod && this.selectionChanged()) { | ||||
var sel = window.getSelection(), cm = this.cm; | ||||
this.rememberSelection(); | ||||
var anchor = domToPos(cm, sel.anchorNode, sel.anchorOffset); | ||||
var head = domToPos(cm, sel.focusNode, sel.focusOffset); | ||||
if (anchor && head) runInOp(cm, function() { | ||||
setSelection(cm.doc, simpleSelection(anchor, head), sel_dontScroll); | ||||
if (anchor.bad || head.bad) cm.curOp.selectionChanged = true; | ||||
}); | ||||
} | ||||
}, | ||||
pollContent: function() { | ||||
var cm = this.cm, display = cm.display, sel = cm.doc.sel.primary(); | ||||
var from = sel.from(), to = sel.to(); | ||||
if (from.line < display.viewFrom || to.line > display.viewTo - 1) return false; | ||||
var fromIndex; | ||||
if (from.line == display.viewFrom || (fromIndex = findViewIndex(cm, from.line)) == 0) { | ||||
var fromLine = lineNo(display.view[0].line); | ||||
var fromNode = display.view[0].node; | ||||
} else { | ||||
var fromLine = lineNo(display.view[fromIndex].line); | ||||
var fromNode = display.view[fromIndex - 1].node.nextSibling; | ||||
} | ||||
var toIndex = findViewIndex(cm, to.line); | ||||
if (toIndex == display.view.length - 1) { | ||||
var toLine = display.viewTo - 1; | ||||
var toNode = display.lineDiv.lastChild; | ||||
} else { | ||||
var toLine = lineNo(display.view[toIndex + 1].line) - 1; | ||||
var toNode = display.view[toIndex + 1].node.previousSibling; | ||||
} | ||||
var newText = splitLines(domTextBetween(cm, fromNode, toNode, fromLine, toLine)); | ||||
var oldText = getBetween(cm.doc, Pos(fromLine, 0), Pos(toLine, getLine(cm.doc, toLine).text.length)); | ||||
while (newText.length > 1 && oldText.length > 1) { | ||||
if (lst(newText) == lst(oldText)) { newText.pop(); oldText.pop(); toLine--; } | ||||
else if (newText[0] == oldText[0]) { newText.shift(); oldText.shift(); fromLine++; } | ||||
else break; | ||||
} | ||||
var cutFront = 0, cutEnd = 0; | ||||
var newTop = newText[0], oldTop = oldText[0], maxCutFront = Math.min(newTop.length, oldTop.length); | ||||
while (cutFront < maxCutFront && newTop.charCodeAt(cutFront) == oldTop.charCodeAt(cutFront)) | ||||
++cutFront; | ||||
var newBot = lst(newText), oldBot = lst(oldText); | ||||
var maxCutEnd = Math.min(newBot.length - (newText.length == 1 ? cutFront : 0), | ||||
oldBot.length - (oldText.length == 1 ? cutFront : 0)); | ||||
while (cutEnd < maxCutEnd && | ||||
newBot.charCodeAt(newBot.length - cutEnd - 1) == oldBot.charCodeAt(oldBot.length - cutEnd - 1)) | ||||
++cutEnd; | ||||
newText[newText.length - 1] = newBot.slice(0, newBot.length - cutEnd); | ||||
newText[0] = newText[0].slice(cutFront); | ||||
var chFrom = Pos(fromLine, cutFront); | ||||
var chTo = Pos(toLine, oldText.length ? lst(oldText).length - cutEnd : 0); | ||||
if (newText.length > 1 || newText[0] || cmp(chFrom, chTo)) { | ||||
replaceRange(cm.doc, newText, chFrom, chTo, "+input"); | ||||
return true; | ||||
} | ||||
}, | ||||
ensurePolled: function() { | ||||
this.forceCompositionEnd(); | ||||
}, | ||||
reset: function() { | ||||
this.forceCompositionEnd(); | ||||
}, | ||||
forceCompositionEnd: function() { | ||||
if (!this.composing || this.composing.handled) return; | ||||
this.applyComposition(this.composing); | ||||
this.composing.handled = true; | ||||
this.div.blur(); | ||||
this.div.focus(); | ||||
}, | ||||
applyComposition: function(composing) { | ||||
if (composing.data && composing.data != composing.startData) | ||||
operation(this.cm, applyTextInput)(this.cm, composing.data, 0, composing.sel); | ||||
}, | ||||
setUneditable: function(node) { | ||||
node.setAttribute("contenteditable", "false"); | ||||
}, | ||||
onKeyPress: function(e) { | ||||
e.preventDefault(); | ||||
operation(this.cm, applyTextInput)(this.cm, String.fromCharCode(e.charCode == null ? e.keyCode : e.charCode), 0); | ||||
}, | ||||
onContextMenu: nothing, | ||||
resetPosition: nothing, | ||||
needsContentAttribute: true | ||||
}, ContentEditableInput.prototype); | ||||
function posToDOM(cm, pos) { | ||||
var view = findViewForLine(cm, pos.line); | ||||
if (!view || view.hidden) return null; | ||||
var line = getLine(cm.doc, pos.line); | ||||
var info = mapFromLineView(view, line, pos.line); | ||||
var order = getOrder(line), side = "left"; | ||||
if (order) { | ||||
var partPos = getBidiPartAt(order, pos.ch); | ||||
side = partPos % 2 ? "right" : "left"; | ||||
} | ||||
var result = nodeAndOffsetInLineMap(info.map, pos.ch, side); | ||||
result.offset = result.collapse == "right" ? result.end : result.start; | ||||
return result; | ||||
} | ||||
function badPos(pos, bad) { if (bad) pos.bad = true; return pos; } | ||||
function domToPos(cm, node, offset) { | ||||
var lineNode; | ||||
if (node == cm.display.lineDiv) { | ||||
lineNode = cm.display.lineDiv.childNodes[offset]; | ||||
if (!lineNode) return badPos(cm.clipPos(Pos(cm.display.viewTo - 1)), true); | ||||
node = null; offset = 0; | ||||
} else { | ||||
for (lineNode = node;; lineNode = lineNode.parentNode) { | ||||
if (!lineNode || lineNode == cm.display.lineDiv) return null; | ||||
if (lineNode.parentNode && lineNode.parentNode == cm.display.lineDiv) break; | ||||
} | ||||
} | ||||
for (var i = 0; i < cm.display.view.length; i++) { | ||||
var lineView = cm.display.view[i]; | ||||
if (lineView.node == lineNode) | ||||
return locateNodeInLineView(lineView, node, offset); | ||||
} | ||||
} | ||||
function locateNodeInLineView(lineView, node, offset) { | ||||
var wrapper = lineView.text.firstChild, bad = false; | ||||
if (!node || !contains(wrapper, node)) return badPos(Pos(lineNo(lineView.line), 0), true); | ||||
if (node == wrapper) { | ||||
bad = true; | ||||
node = wrapper.childNodes[offset]; | ||||
offset = 0; | ||||
if (!node) { | ||||
var line = lineView.rest ? lst(lineView.rest) : lineView.line; | ||||
return badPos(Pos(lineNo(line), line.text.length), bad); | ||||
} | ||||
} | ||||
var textNode = node.nodeType == 3 ? node : null, topNode = node; | ||||
if (!textNode && node.childNodes.length == 1 && node.firstChild.nodeType == 3) { | ||||
textNode = node.firstChild; | ||||
if (offset) offset = textNode.nodeValue.length; | ||||
} | ||||
while (topNode.parentNode != wrapper) topNode = topNode.parentNode; | ||||
var measure = lineView.measure, maps = measure.maps; | ||||
function find(textNode, topNode, offset) { | ||||
for (var i = -1; i < (maps ? maps.length : 0); i++) { | ||||
var map = i < 0 ? measure.map : maps[i]; | ||||
for (var j = 0; j < map.length; j += 3) { | ||||
var curNode = map[j + 2]; | ||||
if (curNode == textNode || curNode == topNode) { | ||||
var line = lineNo(i < 0 ? lineView.line : lineView.rest[i]); | ||||
var ch = map[j] + offset; | ||||
if (offset < 0 || curNode != textNode) ch = map[j + (offset ? 1 : 0)]; | ||||
return Pos(line, ch); | ||||
} | ||||
} | ||||
} | ||||
} | ||||
var found = find(textNode, topNode, offset); | ||||
if (found) return badPos(found, bad); | ||||
// FIXME this is all really shaky. might handle the few cases it needs to handle, but likely to cause problems | ||||
for (var after = topNode.nextSibling, dist = textNode ? textNode.nodeValue.length - offset : 0; after; after = after.nextSibling) { | ||||
found = find(after, after.firstChild, 0); | ||||
if (found) | ||||
return badPos(Pos(found.line, found.ch - dist), bad); | ||||
else | ||||
dist += after.textContent.length; | ||||
} | ||||
for (var before = topNode.previousSibling, dist = offset; before; before = before.previousSibling) { | ||||
found = find(before, before.firstChild, -1); | ||||
if (found) | ||||
return badPos(Pos(found.line, found.ch + dist), bad); | ||||
else | ||||
dist += after.textContent.length; | ||||
} | ||||
} | ||||
function domTextBetween(cm, from, to, fromLine, toLine) { | ||||
var text = "", closing = false; | ||||
function recognizeMarker(id) { return function(marker) { return marker.id == id; }; } | ||||
function walk(node) { | ||||
if (node.nodeType == 1) { | ||||
var cmText = node.getAttribute("cm-text"); | ||||
if (cmText != null) { | ||||
if (cmText == "") cmText = node.textContent.replace(/\u200b/g, ""); | ||||
text += cmText; | ||||
return; | ||||
} | ||||
var markerID = node.getAttribute("cm-marker"), range; | ||||
if (markerID) { | ||||
var found = cm.findMarks(Pos(fromLine, 0), Pos(toLine + 1, 0), recognizeMarker(+markerID)); | ||||
if (found.length && (range = found[0].find())) | ||||
text += getBetween(cm.doc, range.from, range.to).join("\n"); | ||||
return; | ||||
} | ||||
if (node.getAttribute("contenteditable") == "false") return; | ||||
for (var i = 0; i < node.childNodes.length; i++) | ||||
walk(node.childNodes[i]); | ||||
if (/^(pre|div|p)$/i.test(node.nodeName)) | ||||
closing = true; | ||||
} else if (node.nodeType == 3) { | ||||
var val = node.nodeValue; | ||||
if (!val) return; | ||||
if (closing) { | ||||
text += "\n"; | ||||
closing = false; | ||||
} | ||||
text += val; | ||||
} | ||||
} | ||||
for (;;) { | ||||
walk(from); | ||||
if (from == to) break; | ||||
from = from.nextSibling; | ||||
} | ||||
return text; | ||||
} | ||||
CodeMirror.inputStyles = {"textarea": TextareaInput, "contenteditable": ContentEditableInput}; | ||||
// SELECTION / CURSOR | ||||
// Selection objects are immutable. A new one is created every time | ||||
// the selection changes. A selection is one or more non-overlapping | ||||
// (and non-touching) ranges, sorted, and an integer that indicates | ||||
// which one is the primary selection (the one that's scrolled into | ||||
// view, that getCursor returns, etc). | ||||
function Selection(ranges, primIndex) { | ||||
this.ranges = ranges; | ||||
this.primIndex = primIndex; | ||||
} | ||||
Selection.prototype = { | ||||
primary: function() { return this.ranges[this.primIndex]; }, | ||||
equals: function(other) { | ||||
if (other == this) return true; | ||||
if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false; | ||||
for (var i = 0; i < this.ranges.length; i++) { | ||||
var here = this.ranges[i], there = other.ranges[i]; | ||||
if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false; | ||||
} | ||||
return true; | ||||
}, | ||||
deepCopy: function() { | ||||
for (var out = [], i = 0; i < this.ranges.length; i++) | ||||
out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head)); | ||||
return new Selection(out, this.primIndex); | ||||
}, | ||||
somethingSelected: function() { | ||||
for (var i = 0; i < this.ranges.length; i++) | ||||
if (!this.ranges[i].empty()) return true; | ||||
return false; | ||||
}, | ||||
contains: function(pos, end) { | ||||
if (!end) end = pos; | ||||
for (var i = 0; i < this.ranges.length; i++) { | ||||
var range = this.ranges[i]; | ||||
if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0) | ||||
return i; | ||||
} | ||||
return -1; | ||||
} | ||||
}; | ||||
function Range(anchor, head) { | ||||
this.anchor = anchor; this.head = head; | ||||
} | ||||
Range.prototype = { | ||||
from: function() { return minPos(this.anchor, this.head); }, | ||||
to: function() { return maxPos(this.anchor, this.head); }, | ||||
empty: function() { | ||||
return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch; | ||||
} | ||||
}; | ||||
// Take an unsorted, potentially overlapping set of ranges, and | ||||
// build a selection out of it. 'Consumes' ranges array (modifying | ||||
// it). | ||||
function normalizeSelection(ranges, primIndex) { | ||||
var prim = ranges[primIndex]; | ||||
ranges.sort(function(a, b) { return cmp(a.from(), b.from()); }); | ||||
primIndex = indexOf(ranges, prim); | ||||
for (var i = 1; i < ranges.length; i++) { | ||||
var cur = ranges[i], prev = ranges[i - 1]; | ||||
if (cmp(prev.to(), cur.from()) >= 0) { | ||||
var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to()); | ||||
var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head; | ||||
if (i <= primIndex) --primIndex; | ||||
ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to)); | ||||
} | ||||
} | ||||
return new Selection(ranges, primIndex); | ||||
} | ||||
function simpleSelection(anchor, head) { | ||||
return new Selection([new Range(anchor, head || anchor)], 0); | ||||
} | ||||
// Most of the external API clips given positions to make sure they | ||||
// actually exist within the document. | ||||
function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));} | ||||
function clipPos(doc, pos) { | ||||
if (pos.line < doc.first) return Pos(doc.first, 0); | ||||
var last = doc.first + doc.size - 1; | ||||
if (pos.line > last) return Pos(last, getLine(doc, last).text.length); | ||||
return clipToLen(pos, getLine(doc, pos.line).text.length); | ||||
} | ||||
function clipToLen(pos, linelen) { | ||||
var ch = pos.ch; | ||||
if (ch == null || ch > linelen) return Pos(pos.line, linelen); | ||||
else if (ch < 0) return Pos(pos.line, 0); | ||||
else return pos; | ||||
} | ||||
function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;} | ||||
function clipPosArray(doc, array) { | ||||
for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]); | ||||
return out; | ||||
} | ||||
// SELECTION UPDATES | ||||
// The 'scroll' parameter given to many of these indicated whether | ||||
// the new cursor position should be scrolled into view after | ||||
// modifying the selection. | ||||
// If shift is held or the extend flag is set, extends a range to | ||||
// include a given position (and optionally a second position). | ||||
// Otherwise, simply returns the range between the given positions. | ||||
// Used for cursor motion and such. | ||||
function extendRange(doc, range, head, other) { | ||||
if (doc.cm && doc.cm.display.shift || doc.extend) { | ||||
var anchor = range.anchor; | ||||
if (other) { | ||||
var posBefore = cmp(head, anchor) < 0; | ||||
if (posBefore != (cmp(other, anchor) < 0)) { | ||||
anchor = head; | ||||
head = other; | ||||
} else if (posBefore != (cmp(head, other) < 0)) { | ||||
head = other; | ||||
} | ||||
} | ||||
return new Range(anchor, head); | ||||
} else { | ||||
return new Range(other || head, head); | ||||
} | ||||
} | ||||
// Extend the primary selection range, discard the rest. | ||||
function extendSelection(doc, head, other, options) { | ||||
setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options); | ||||
} | ||||
// Extend all selections (pos is an array of selections with length | ||||
// equal the number of selections) | ||||
function extendSelections(doc, heads, options) { | ||||
for (var out = [], i = 0; i < doc.sel.ranges.length; i++) | ||||
out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null); | ||||
var newSel = normalizeSelection(out, doc.sel.primIndex); | ||||
setSelection(doc, newSel, options); | ||||
} | ||||
// Updates a single range in the selection. | ||||
function replaceOneSelection(doc, i, range, options) { | ||||
var ranges = doc.sel.ranges.slice(0); | ||||
ranges[i] = range; | ||||
setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options); | ||||
} | ||||
// Reset the selection to a single range. | ||||
function setSimpleSelection(doc, anchor, head, options) { | ||||
setSelection(doc, simpleSelection(anchor, head), options); | ||||
} | ||||
// Give beforeSelectionChange handlers a change to influence a | ||||
// selection update. | ||||
function filterSelectionChange(doc, sel) { | ||||
var obj = { | ||||
ranges: sel.ranges, | ||||
update: function(ranges) { | ||||
this.ranges = []; | ||||
for (var i = 0; i < ranges.length; i++) | ||||
this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor), | ||||
clipPos(doc, ranges[i].head)); | ||||
} | ||||
}; | ||||
signal(doc, "beforeSelectionChange", doc, obj); | ||||
if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); | ||||
if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1); | ||||
else return sel; | ||||
} | ||||
function setSelectionReplaceHistory(doc, sel, options) { | ||||
var done = doc.history.done, last = lst(done); | ||||
if (last && last.ranges) { | ||||
done[done.length - 1] = sel; | ||||
setSelectionNoUndo(doc, sel, options); | ||||
} else { | ||||
setSelection(doc, sel, options); | ||||
} | ||||
} | ||||
// Set a new selection. | ||||
function setSelection(doc, sel, options) { | ||||
setSelectionNoUndo(doc, sel, options); | ||||
addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options); | ||||
} | ||||
function setSelectionNoUndo(doc, sel, options) { | ||||
if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) | ||||
sel = filterSelectionChange(doc, sel); | ||||
var bias = options && options.bias || | ||||
(cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1); | ||||
setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true)); | ||||
if (!(options && options.scroll === false) && doc.cm) | ||||
ensureCursorVisible(doc.cm); | ||||
} | ||||
function setSelectionInner(doc, sel) { | ||||
if (sel.equals(doc.sel)) return; | ||||
doc.sel = sel; | ||||
if (doc.cm) { | ||||
doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = true; | ||||
signalCursorActivity(doc.cm); | ||||
} | ||||
signalLater(doc, "cursorActivity", doc); | ||||
} | ||||
// Verify that the selection does not partially select any atomic | ||||
// marked ranges. | ||||
function reCheckSelection(doc) { | ||||
setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll); | ||||
} | ||||
// Return a selection that does not partially select any atomic | ||||
// ranges. | ||||
function skipAtomicInSelection(doc, sel, bias, mayClear) { | ||||
var out; | ||||
for (var i = 0; i < sel.ranges.length; i++) { | ||||
var range = sel.ranges[i]; | ||||
var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear); | ||||
var newHead = skipAtomic(doc, range.head, bias, mayClear); | ||||
if (out || newAnchor != range.anchor || newHead != range.head) { | ||||
if (!out) out = sel.ranges.slice(0, i); | ||||
out[i] = new Range(newAnchor, newHead); | ||||
} | ||||
} | ||||
return out ? normalizeSelection(out, sel.primIndex) : sel; | ||||
} | ||||
// Ensure a given position is not inside an atomic range. | ||||
function skipAtomic(doc, pos, bias, mayClear) { | ||||
var flipped = false, curPos = pos; | ||||
var dir = bias || 1; | ||||
doc.cantEdit = false; | ||||
search: for (;;) { | ||||
var line = getLine(doc, curPos.line); | ||||
if (line.markedSpans) { | ||||
for (var i = 0; i < line.markedSpans.length; ++i) { | ||||
var sp = line.markedSpans[i], m = sp.marker; | ||||
if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) && | ||||
(sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) { | ||||
if (mayClear) { | ||||
signal(m, "beforeCursorEnter"); | ||||
if (m.explicitlyCleared) { | ||||
if (!line.markedSpans) break; | ||||
else {--i; continue;} | ||||
} | ||||
} | ||||
if (!m.atomic) continue; | ||||
var newPos = m.find(dir < 0 ? -1 : 1); | ||||
if (cmp(newPos, curPos) == 0) { | ||||
newPos.ch += dir; | ||||
if (newPos.ch < 0) { | ||||
if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1)); | ||||
else newPos = null; | ||||
} else if (newPos.ch > line.text.length) { | ||||
if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0); | ||||
else newPos = null; | ||||
} | ||||
if (!newPos) { | ||||
if (flipped) { | ||||
// Driven in a corner -- no valid cursor position found at all | ||||
// -- try again *with* clearing, if we didn't already | ||||
if (!mayClear) return skipAtomic(doc, pos, bias, true); | ||||
// Otherwise, turn off editing until further notice, and return the start of the doc | ||||
doc.cantEdit = true; | ||||
return Pos(doc.first, 0); | ||||
} | ||||
flipped = true; newPos = pos; dir = -dir; | ||||
} | ||||
} | ||||
curPos = newPos; | ||||
continue search; | ||||
} | ||||
} | ||||
} | ||||
return curPos; | ||||
} | ||||
} | ||||
// SELECTION DRAWING | ||||
function updateSelection(cm) { | ||||
cm.display.input.showSelection(cm.display.input.prepareSelection()); | ||||
} | ||||
function prepareSelection(cm, primary) { | ||||
var doc = cm.doc, result = {}; | ||||
var curFragment = result.cursors = document.createDocumentFragment(); | ||||
var selFragment = result.selection = document.createDocumentFragment(); | ||||
for (var i = 0; i < doc.sel.ranges.length; i++) { | ||||
if (primary === false && i == doc.sel.primIndex) continue; | ||||
var range = doc.sel.ranges[i]; | ||||
var collapsed = range.empty(); | ||||
if (collapsed || cm.options.showCursorWhenSelecting) | ||||
drawSelectionCursor(cm, range, curFragment); | ||||
if (!collapsed) | ||||
drawSelectionRange(cm, range, selFragment); | ||||
} | ||||
return result; | ||||
} | ||||
// Draws a cursor for the given range | ||||
function drawSelectionCursor(cm, range, output) { | ||||
var pos = cursorCoords(cm, range.head, "div", null, null, !cm.options.singleCursorHeightPerLine); | ||||
var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor")); | ||||
cursor.style.left = pos.left + "px"; | ||||
cursor.style.top = pos.top + "px"; | ||||
cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; | ||||
if (pos.other) { | ||||
// Secondary cursor, shown when on a 'jump' in bi-directional text | ||||
var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor")); | ||||
otherCursor.style.display = ""; | ||||
otherCursor.style.left = pos.other.left + "px"; | ||||
otherCursor.style.top = pos.other.top + "px"; | ||||
otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; | ||||
} | ||||
} | ||||
// Draws the given range as a highlighted selection | ||||
function drawSelectionRange(cm, range, output) { | ||||
var display = cm.display, doc = cm.doc; | ||||
var fragment = document.createDocumentFragment(); | ||||
var padding = paddingH(cm.display), leftSide = padding.left; | ||||
var rightSide = Math.max(display.sizerWidth, displayWidth(cm) - display.sizer.offsetLeft) - padding.right; | ||||
function add(left, top, width, bottom) { | ||||
if (top < 0) top = 0; | ||||
top = Math.round(top); | ||||
bottom = Math.round(bottom); | ||||
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + | ||||
"px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) + | ||||
"px; height: " + (bottom - top) + "px")); | ||||
} | ||||
function drawForLine(line, fromArg, toArg) { | ||||
var lineObj = getLine(doc, line); | ||||
var lineLen = lineObj.text.length; | ||||
var start, end; | ||||
function coords(ch, bias) { | ||||
return charCoords(cm, Pos(line, ch), "div", lineObj, bias); | ||||
} | ||||
iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { | ||||
var leftPos = coords(from, "left"), rightPos, left, right; | ||||
if (from == to) { | ||||
rightPos = leftPos; | ||||
left = right = leftPos.left; | ||||
} else { | ||||
rightPos = coords(to - 1, "right"); | ||||
if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } | ||||
left = leftPos.left; | ||||
right = rightPos.right; | ||||
} | ||||
if (fromArg == null && from == 0) left = leftSide; | ||||
if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part | ||||
add(left, leftPos.top, null, leftPos.bottom); | ||||
left = leftSide; | ||||
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); | ||||
} | ||||
if (toArg == null && to == lineLen) right = rightSide; | ||||
if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left) | ||||
start = leftPos; | ||||
if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right) | ||||
end = rightPos; | ||||
if (left < leftSide + 1) left = leftSide; | ||||
add(left, rightPos.top, right - left, rightPos.bottom); | ||||
}); | ||||
return {start: start, end: end}; | ||||
} | ||||
var sFrom = range.from(), sTo = range.to(); | ||||
if (sFrom.line == sTo.line) { | ||||
drawForLine(sFrom.line, sFrom.ch, sTo.ch); | ||||
} else { | ||||
var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line); | ||||
var singleVLine = visualLine(fromLine) == visualLine(toLine); | ||||
var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end; | ||||
var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start; | ||||
if (singleVLine) { | ||||
if (leftEnd.top < rightStart.top - 2) { | ||||
add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); | ||||
add(leftSide, rightStart.top, rightStart.left, rightStart.bottom); | ||||
} else { | ||||
add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); | ||||
} | ||||
} | ||||
if (leftEnd.bottom < rightStart.top) | ||||
add(leftSide, leftEnd.bottom, null, rightStart.top); | ||||
} | ||||
output.appendChild(fragment); | ||||
} | ||||
// Cursor-blinking | ||||
function restartBlink(cm) { | ||||
if (!cm.state.focused) return; | ||||
var display = cm.display; | ||||
clearInterval(display.blinker); | ||||
var on = true; | ||||
display.cursorDiv.style.visibility = ""; | ||||
if (cm.options.cursorBlinkRate > 0) | ||||
display.blinker = setInterval(function() { | ||||
display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden"; | ||||
}, cm.options.cursorBlinkRate); | ||||
else if (cm.options.cursorBlinkRate < 0) | ||||
display.cursorDiv.style.visibility = "hidden"; | ||||
} | ||||
// HIGHLIGHT WORKER | ||||
function startWorker(cm, time) { | ||||
if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo) | ||||
cm.state.highlight.set(time, bind(highlightWorker, cm)); | ||||
} | ||||
function highlightWorker(cm) { | ||||
var doc = cm.doc; | ||||
if (doc.frontier < doc.first) doc.frontier = doc.first; | ||||
if (doc.frontier >= cm.display.viewTo) return; | ||||
var end = +new Date + cm.options.workTime; | ||||
var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); | ||||
var changedLines = []; | ||||
doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) { | ||||
if (doc.frontier >= cm.display.viewFrom) { // Visible | ||||
var oldStyles = line.styles; | ||||
var highlighted = highlightLine(cm, line, state, true); | ||||
line.styles = highlighted.styles; | ||||
var oldCls = line.styleClasses, newCls = highlighted.classes; | ||||
if (newCls) line.styleClasses = newCls; | ||||
else if (oldCls) line.styleClasses = null; | ||||
var ischange = !oldStyles || oldStyles.length != line.styles.length || | ||||
oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass); | ||||
for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; | ||||
if (ischange) changedLines.push(doc.frontier); | ||||
line.stateAfter = copyState(doc.mode, state); | ||||
} else { | ||||
processLine(cm, line.text, state); | ||||
line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null; | ||||
} | ||||
++doc.frontier; | ||||
if (+new Date > end) { | ||||
startWorker(cm, cm.options.workDelay); | ||||
return true; | ||||
} | ||||
}); | ||||
if (changedLines.length) runInOp(cm, function() { | ||||
for (var i = 0; i < changedLines.length; i++) | ||||
regLineChange(cm, changedLines[i], "text"); | ||||
}); | ||||
} | ||||
// Finds the line to start with when starting a parse. Tries to | ||||
// find a line with a stateAfter, so that it can start with a | ||||
// valid state. If that fails, it returns the line with the | ||||
// smallest indentation, which tends to need the least context to | ||||
// parse correctly. | ||||
function findStartLine(cm, n, precise) { | ||||
var minindent, minline, doc = cm.doc; | ||||
var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100); | ||||
for (var search = n; search > lim; --search) { | ||||
if (search <= doc.first) return doc.first; | ||||
var line = getLine(doc, search - 1); | ||||
if (line.stateAfter && (!precise || search <= doc.frontier)) return search; | ||||
var indented = countColumn(line.text, null, cm.options.tabSize); | ||||
if (minline == null || minindent > indented) { | ||||
minline = search - 1; | ||||
minindent = indented; | ||||
} | ||||
} | ||||
return minline; | ||||
} | ||||
function getStateBefore(cm, n, precise) { | ||||
var doc = cm.doc, display = cm.display; | ||||
if (!doc.mode.startState) return true; | ||||
var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; | ||||
if (!state) state = startState(doc.mode); | ||||
else state = copyState(doc.mode, state); | ||||
doc.iter(pos, n, function(line) { | ||||
processLine(cm, line.text, state); | ||||
var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo; | ||||
line.stateAfter = save ? copyState(doc.mode, state) : null; | ||||
++pos; | ||||
}); | ||||
if (precise) doc.frontier = pos; | ||||
return state; | ||||
} | ||||
// POSITION MEASUREMENT | ||||
function paddingTop(display) {return display.lineSpace.offsetTop;} | ||||
function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} | ||||
function paddingH(display) { | ||||
if (display.cachedPaddingH) return display.cachedPaddingH; | ||||
var e = removeChildrenAndAdd(display.measure, elt("pre", "x")); | ||||
var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle; | ||||
var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)}; | ||||
if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data; | ||||
return data; | ||||
} | ||||
function scrollGap(cm) { return scrollerGap - cm.display.nativeBarWidth; } | ||||
function displayWidth(cm) { | ||||
return cm.display.scroller.clientWidth - scrollGap(cm) - cm.display.barWidth; | ||||
} | ||||
function displayHeight(cm) { | ||||
return cm.display.scroller.clientHeight - scrollGap(cm) - cm.display.barHeight; | ||||
} | ||||
// Ensure the lineView.wrapping.heights array is populated. This is | ||||
// an array of bottom offsets for the lines that make up a drawn | ||||
// line. When lineWrapping is on, there might be more than one | ||||
// height. | ||||
function ensureLineHeights(cm, lineView, rect) { | ||||
var wrapping = cm.options.lineWrapping; | ||||
var curWidth = wrapping && displayWidth(cm); | ||||
if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) { | ||||
var heights = lineView.measure.heights = []; | ||||
if (wrapping) { | ||||
lineView.measure.width = curWidth; | ||||
var rects = lineView.text.firstChild.getClientRects(); | ||||
for (var i = 0; i < rects.length - 1; i++) { | ||||
var cur = rects[i], next = rects[i + 1]; | ||||
if (Math.abs(cur.bottom - next.bottom) > 2) | ||||
heights.push((cur.bottom + next.top) / 2 - rect.top); | ||||
} | ||||
} | ||||
heights.push(rect.bottom - rect.top); | ||||
} | ||||
} | ||||
// Find a line map (mapping character offsets to text nodes) and a | ||||
// measurement cache for the given line number. (A line view might | ||||
// contain multiple lines when collapsed ranges are present.) | ||||
function mapFromLineView(lineView, line, lineN) { | ||||
if (lineView.line == line) | ||||
return {map: lineView.measure.map, cache: lineView.measure.cache}; | ||||
for (var i = 0; i < lineView.rest.length; i++) | ||||
if (lineView.rest[i] == line) | ||||
return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]}; | ||||
for (var i = 0; i < lineView.rest.length; i++) | ||||
if (lineNo(lineView.rest[i]) > lineN) | ||||
return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true}; | ||||
} | ||||
// Render a line into the hidden node display.externalMeasured. Used | ||||
// when measurement is needed for a line that's not in the viewport. | ||||
function updateExternalMeasurement(cm, line) { | ||||
line = visualLine(line); | ||||
var lineN = lineNo(line); | ||||
var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN); | ||||
view.lineN = lineN; | ||||
var built = view.built = buildLineContent(cm, view); | ||||
view.text = built.pre; | ||||
removeChildrenAndAdd(cm.display.lineMeasure, built.pre); | ||||
return view; | ||||
} | ||||
// Get a {top, bottom, left, right} box (in line-local coordinates) | ||||
// for a given character. | ||||
function measureChar(cm, line, ch, bias) { | ||||
return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias); | ||||
} | ||||
// Find a line view that corresponds to the given line number. | ||||
function findViewForLine(cm, lineN) { | ||||
if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo) | ||||
return cm.display.view[findViewIndex(cm, lineN)]; | ||||
var ext = cm.display.externalMeasured; | ||||
if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size) | ||||
return ext; | ||||
} | ||||
// Measurement can be split in two steps, the set-up work that | ||||
// applies to the whole line, and the measurement of the actual | ||||
// character. Functions like coordsChar, that need to do a lot of | ||||
// measurements in a row, can thus ensure that the set-up work is | ||||
// only done once. | ||||
function prepareMeasureForLine(cm, line) { | ||||
var lineN = lineNo(line); | ||||
var view = findViewForLine(cm, lineN); | ||||
if (view && !view.text) | ||||
view = null; | ||||
else if (view && view.changes) | ||||
updateLineForChanges(cm, view, lineN, getDimensions(cm)); | ||||
if (!view) | ||||
view = updateExternalMeasurement(cm, line); | ||||
var info = mapFromLineView(view, line, lineN); | ||||
return { | ||||
line: line, view: view, rect: null, | ||||
map: info.map, cache: info.cache, before: info.before, | ||||
hasHeights: false | ||||
}; | ||||
} | ||||
// Given a prepared measurement object, measures the position of an | ||||
// actual character (or fetches it from the cache). | ||||
function measureCharPrepared(cm, prepared, ch, bias, varHeight) { | ||||
if (prepared.before) ch = -1; | ||||
var key = ch + (bias || ""), found; | ||||
if (prepared.cache.hasOwnProperty(key)) { | ||||
found = prepared.cache[key]; | ||||
} else { | ||||
if (!prepared.rect) | ||||
prepared.rect = prepared.view.text.getBoundingClientRect(); | ||||
if (!prepared.hasHeights) { | ||||
ensureLineHeights(cm, prepared.view, prepared.rect); | ||||
prepared.hasHeights = true; | ||||
} | ||||
found = measureCharInner(cm, prepared, ch, bias); | ||||
if (!found.bogus) prepared.cache[key] = found; | ||||
} | ||||
return {left: found.left, right: found.right, | ||||
top: varHeight ? found.rtop : found.top, | ||||
bottom: varHeight ? found.rbottom : found.bottom}; | ||||
} | ||||
var nullRect = {left: 0, right: 0, top: 0, bottom: 0}; | ||||
function nodeAndOffsetInLineMap(map, ch, bias) { | ||||
var node, start, end, collapse; | ||||
// First, search the line map for the text node corresponding to, | ||||
// or closest to, the target character. | ||||
for (var i = 0; i < map.length; i += 3) { | ||||
var mStart = map[i], mEnd = map[i + 1]; | ||||
if (ch < mStart) { | ||||
start = 0; end = 1; | ||||
collapse = "left"; | ||||
} else if (ch < mEnd) { | ||||
start = ch - mStart; | ||||
end = start + 1; | ||||
} else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) { | ||||
end = mEnd - mStart; | ||||
start = end - 1; | ||||
if (ch >= mEnd) collapse = "right"; | ||||
} | ||||
if (start != null) { | ||||
node = map[i + 2]; | ||||
if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right")) | ||||
collapse = bias; | ||||
if (bias == "left" && start == 0) | ||||
while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) { | ||||
node = map[(i -= 3) + 2]; | ||||
collapse = "left"; | ||||
} | ||||
if (bias == "right" && start == mEnd - mStart) | ||||
while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) { | ||||
node = map[(i += 3) + 2]; | ||||
collapse = "right"; | ||||
} | ||||
break; | ||||
} | ||||
} | ||||
return {node: node, start: start, end: end, collapse: collapse, coverStart: mStart, coverEnd: mEnd}; | ||||
} | ||||
function measureCharInner(cm, prepared, ch, bias) { | ||||
var place = nodeAndOffsetInLineMap(prepared.map, ch, bias); | ||||
var node = place.node, start = place.start, end = place.end, collapse = place.collapse; | ||||
var rect; | ||||
if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates. | ||||
for (var i = 0; i < 4; i++) { // Retry a maximum of 4 times when nonsense rectangles are returned | ||||
while (start && isExtendingChar(prepared.line.text.charAt(place.coverStart + start))) --start; | ||||
while (place.coverStart + end < place.coverEnd && isExtendingChar(prepared.line.text.charAt(place.coverStart + end))) ++end; | ||||
if (ie && ie_version < 9 && start == 0 && end == place.coverEnd - place.coverStart) { | ||||
rect = node.parentNode.getBoundingClientRect(); | ||||
} else if (ie && cm.options.lineWrapping) { | ||||
var rects = range(node, start, end).getClientRects(); | ||||
if (rects.length) | ||||
rect = rects[bias == "right" ? rects.length - 1 : 0]; | ||||
else | ||||
rect = nullRect; | ||||
} else { | ||||
rect = range(node, start, end).getBoundingClientRect() || nullRect; | ||||
} | ||||
if (rect.left || rect.right || start == 0) break; | ||||
end = start; | ||||
start = start - 1; | ||||
collapse = "right"; | ||||
} | ||||
if (ie && ie_version < 11) rect = maybeUpdateRectForZooming(cm.display.measure, rect); | ||||
} else { // If it is a widget, simply get the box for the whole widget. | ||||
if (start > 0) collapse = bias = "right"; | ||||
var rects; | ||||
if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1) | ||||
rect = rects[bias == "right" ? rects.length - 1 : 0]; | ||||
else | ||||
rect = node.getBoundingClientRect(); | ||||
} | ||||
if (ie && ie_version < 9 && !start && (!rect || !rect.left && !rect.right)) { | ||||
var rSpan = node.parentNode.getClientRects()[0]; | ||||
if (rSpan) | ||||
rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom}; | ||||
else | ||||
rect = nullRect; | ||||
} | ||||
var rtop = rect.top - prepared.rect.top, rbot = rect.bottom - prepared.rect.top; | ||||
var mid = (rtop + rbot) / 2; | ||||
var heights = prepared.view.measure.heights; | ||||
for (var i = 0; i < heights.length - 1; i++) | ||||
if (mid < heights[i]) break; | ||||
var top = i ? heights[i - 1] : 0, bot = heights[i]; | ||||
var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left, | ||||
right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left, | ||||
top: top, bottom: bot}; | ||||
if (!rect.left && !rect.right) result.bogus = true; | ||||
if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; } | ||||
return result; | ||||
} | ||||
// Work around problem with bounding client rects on ranges being | ||||
// returned incorrectly when zoomed on IE10 and below. | ||||
function maybeUpdateRectForZooming(measure, rect) { | ||||
if (!window.screen || screen.logicalXDPI == null || | ||||
screen.logicalXDPI == screen.deviceXDPI || !hasBadZoomedRects(measure)) | ||||
return rect; | ||||
var scaleX = screen.logicalXDPI / screen.deviceXDPI; | ||||
var scaleY = screen.logicalYDPI / screen.deviceYDPI; | ||||
return {left: rect.left * scaleX, right: rect.right * scaleX, | ||||
top: rect.top * scaleY, bottom: rect.bottom * scaleY}; | ||||
} | ||||
function clearLineMeasurementCacheFor(lineView) { | ||||
if (lineView.measure) { | ||||
lineView.measure.cache = {}; | ||||
lineView.measure.heights = null; | ||||
if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++) | ||||
lineView.measure.caches[i] = {}; | ||||
} | ||||
} | ||||
function clearLineMeasurementCache(cm) { | ||||
cm.display.externalMeasure = null; | ||||
removeChildren(cm.display.lineMeasure); | ||||
for (var i = 0; i < cm.display.view.length; i++) | ||||
clearLineMeasurementCacheFor(cm.display.view[i]); | ||||
} | ||||
function clearCaches(cm) { | ||||
clearLineMeasurementCache(cm); | ||||
cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null; | ||||
if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; | ||||
cm.display.lineNumChars = null; | ||||
} | ||||
function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } | ||||
function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } | ||||
// Converts a {top, bottom, left, right} box from line-local | ||||
// coordinates into another coordinate system. Context may be one of | ||||
// "line", "div" (display.lineDiv), "local"/null (editor), "window", | ||||
// or "page". | ||||
function intoCoordSystem(cm, lineObj, rect, context) { | ||||
if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) { | ||||
var size = widgetHeight(lineObj.widgets[i]); | ||||
rect.top += size; rect.bottom += size; | ||||
} | ||||
if (context == "line") return rect; | ||||
if (!context) context = "local"; | ||||
var yOff = heightAtLine(lineObj); | ||||
if (context == "local") yOff += paddingTop(cm.display); | ||||
else yOff -= cm.display.viewOffset; | ||||
if (context == "page" || context == "window") { | ||||
var lOff = cm.display.lineSpace.getBoundingClientRect(); | ||||
yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); | ||||
var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); | ||||
rect.left += xOff; rect.right += xOff; | ||||
} | ||||
rect.top += yOff; rect.bottom += yOff; | ||||
return rect; | ||||
} | ||||
// Coverts a box from "div" coords to another coordinate system. | ||||
// Context may be "window", "page", "div", or "local"/null. | ||||
function fromCoordSystem(cm, coords, context) { | ||||
if (context == "div") return coords; | ||||
var left = coords.left, top = coords.top; | ||||
// First move into "page" coordinate system | ||||
if (context == "page") { | ||||
left -= pageScrollX(); | ||||
top -= pageScrollY(); | ||||
} else if (context == "local" || !context) { | ||||
var localBox = cm.display.sizer.getBoundingClientRect(); | ||||
left += localBox.left; | ||||
top += localBox.top; | ||||
} | ||||
var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect(); | ||||
return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; | ||||
} | ||||
function charCoords(cm, pos, context, lineObj, bias) { | ||||
if (!lineObj) lineObj = getLine(cm.doc, pos.line); | ||||
return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context); | ||||
} | ||||
// Returns a box for a given cursor position, which may have an | ||||
// 'other' property containing the position of the secondary cursor | ||||
// on a bidi boundary. | ||||
function cursorCoords(cm, pos, context, lineObj, preparedMeasure, varHeight) { | ||||
lineObj = lineObj || getLine(cm.doc, pos.line); | ||||
if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj); | ||||
function get(ch, right) { | ||||
var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left", varHeight); | ||||
if (right) m.left = m.right; else m.right = m.left; | ||||
return intoCoordSystem(cm, lineObj, m, context); | ||||
} | ||||
function getBidi(ch, partPos) { | ||||
var part = order[partPos], right = part.level % 2; | ||||
if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) { | ||||
part = order[--partPos]; | ||||
ch = bidiRight(part) - (part.level % 2 ? 0 : 1); | ||||
right = true; | ||||
} else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) { | ||||
part = order[++partPos]; | ||||
ch = bidiLeft(part) - part.level % 2; | ||||
right = false; | ||||
} | ||||
if (right && ch == part.to && ch > part.from) return get(ch - 1); | ||||
return get(ch, right); | ||||
} | ||||
var order = getOrder(lineObj), ch = pos.ch; | ||||
if (!order) return get(ch); | ||||
var partPos = getBidiPartAt(order, ch); | ||||
var val = getBidi(ch, partPos); | ||||
if (bidiOther != null) val.other = getBidi(ch, bidiOther); | ||||
return val; | ||||
} | ||||
// Used to cheaply estimate the coordinates for a position. Used for | ||||
// intermediate scroll updates. | ||||
function estimateCoords(cm, pos) { | ||||
var left = 0, pos = clipPos(cm.doc, pos); | ||||
if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch; | ||||
var lineObj = getLine(cm.doc, pos.line); | ||||
var top = heightAtLine(lineObj) + paddingTop(cm.display); | ||||
return {left: left, right: left, top: top, bottom: top + lineObj.height}; | ||||
} | ||||
// Positions returned by coordsChar contain some extra information. | ||||
// xRel is the relative x position of the input coordinates compared | ||||
// to the found position (so xRel > 0 means the coordinates are to | ||||
// the right of the character position, for example). When outside | ||||
// is true, that means the coordinates lie outside the line's | ||||
// vertical range. | ||||
function PosWithInfo(line, ch, outside, xRel) { | ||||
var pos = Pos(line, ch); | ||||
pos.xRel = xRel; | ||||
if (outside) pos.outside = true; | ||||
return pos; | ||||
} | ||||
// Compute the character position closest to the given coordinates. | ||||
// Input must be lineSpace-local ("div" coordinate system). | ||||
function coordsChar(cm, x, y) { | ||||
var doc = cm.doc; | ||||
y += cm.display.viewOffset; | ||||
if (y < 0) return PosWithInfo(doc.first, 0, true, -1); | ||||
var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1; | ||||
if (lineN > last) | ||||
return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); | ||||
if (x < 0) x = 0; | ||||
var lineObj = getLine(doc, lineN); | ||||
for (;;) { | ||||
var found = coordsCharInner(cm, lineObj, lineN, x, y); | ||||
var merged = collapsedSpanAtEnd(lineObj); | ||||
var mergedPos = merged && merged.find(0, true); | ||||
if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) | ||||
lineN = lineNo(lineObj = mergedPos.to.line); | ||||
else | ||||
return found; | ||||
} | ||||
} | ||||
function coordsCharInner(cm, lineObj, lineNo, x, y) { | ||||
var innerOff = y - heightAtLine(lineObj); | ||||
var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; | ||||
var preparedMeasure = prepareMeasureForLine(cm, lineObj); | ||||
function getX(ch) { | ||||
var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure); | ||||
wrongLine = true; | ||||
if (innerOff > sp.bottom) return sp.left - adjust; | ||||
else if (innerOff < sp.top) return sp.left + adjust; | ||||
else wrongLine = false; | ||||
return sp.left; | ||||
} | ||||
var bidi = getOrder(lineObj), dist = lineObj.text.length; | ||||
var from = lineLeft(lineObj), to = lineRight(lineObj); | ||||
var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine; | ||||
if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); | ||||
// Do a binary search between these bounds. | ||||
for (;;) { | ||||
if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { | ||||
var ch = x < fromX || x - fromX <= toX - x ? from : to; | ||||
var xDiff = x - (ch == from ? fromX : toX); | ||||
while (isExtendingChar(lineObj.text.charAt(ch))) ++ch; | ||||
var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, | ||||
xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0); | ||||
return pos; | ||||
} | ||||
var step = Math.ceil(dist / 2), middle = from + step; | ||||
if (bidi) { | ||||
middle = from; | ||||
for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1); | ||||
} | ||||
var middleX = getX(middle); | ||||
if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;} | ||||
else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;} | ||||
} | ||||
} | ||||
var measureText; | ||||
// Compute the default text height. | ||||
function textHeight(display) { | ||||
if (display.cachedTextHeight != null) return display.cachedTextHeight; | ||||
if (measureText == null) { | ||||
measureText = elt("pre"); | ||||
// Measure a bunch of lines, for browsers that compute | ||||
// fractional heights. | ||||
for (var i = 0; i < 49; ++i) { | ||||
measureText.appendChild(document.createTextNode("x")); | ||||
measureText.appendChild(elt("br")); | ||||
} | ||||
measureText.appendChild(document.createTextNode("x")); | ||||
} | ||||
removeChildrenAndAdd(display.measure, measureText); | ||||
var height = measureText.offsetHeight / 50; | ||||
if (height > 3) display.cachedTextHeight = height; | ||||
removeChildren(display.measure); | ||||
return height || 1; | ||||
} | ||||
// Compute the default character width. | ||||
function charWidth(display) { | ||||
if (display.cachedCharWidth != null) return display.cachedCharWidth; | ||||
var anchor = elt("span", "xxxxxxxxxx"); | ||||
var pre = elt("pre", [anchor]); | ||||
removeChildrenAndAdd(display.measure, pre); | ||||
var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10; | ||||
if (width > 2) display.cachedCharWidth = width; | ||||
return width || 10; | ||||
} | ||||
// OPERATIONS | ||||
// Operations are used to wrap a series of changes to the editor | ||||
// state in such a way that each change won't have to update the | ||||
// cursor and display (which would be awkward, slow, and | ||||
// error-prone). Instead, display updates are batched and then all | ||||
// combined and executed at once. | ||||
var operationGroup = null; | ||||
var nextOpId = 0; | ||||
// Start a new operation. | ||||
function startOperation(cm) { | ||||
cm.curOp = { | ||||
cm: cm, | ||||
viewChanged: false, // Flag that indicates that lines might need to be redrawn | ||||
startHeight: cm.doc.height, // Used to detect need to update scrollbar | ||||
forceUpdate: false, // Used to force a redraw | ||||
updateInput: null, // Whether to reset the input textarea | ||||
typing: false, // Whether this reset should be careful to leave existing text (for compositing) | ||||
changeObjs: null, // Accumulated changes, for firing change events | ||||
cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on | ||||
cursorActivityCalled: 0, // Tracks which cursorActivity handlers have been called already | ||||
selectionChanged: false, // Whether the selection needs to be redrawn | ||||
updateMaxLine: false, // Set when the widest line needs to be determined anew | ||||
scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet | ||||
scrollToPos: null, // Used to scroll to a specific position | ||||
focus: false, | ||||
id: ++nextOpId // Unique ID | ||||
}; | ||||
if (operationGroup) { | ||||
operationGroup.ops.push(cm.curOp); | ||||
} else { | ||||
cm.curOp.ownsGroup = operationGroup = { | ||||
ops: [cm.curOp], | ||||
delayedCallbacks: [] | ||||
}; | ||||
} | ||||
} | ||||
function fireCallbacksForOps(group) { | ||||
// Calls delayed callbacks and cursorActivity handlers until no | ||||
// new ones appear | ||||
var callbacks = group.delayedCallbacks, i = 0; | ||||
do { | ||||
for (; i < callbacks.length; i++) | ||||
callbacks[i](); | ||||
for (var j = 0; j < group.ops.length; j++) { | ||||
var op = group.ops[j]; | ||||
if (op.cursorActivityHandlers) | ||||
while (op.cursorActivityCalled < op.cursorActivityHandlers.length) | ||||
op.cursorActivityHandlers[op.cursorActivityCalled++](op.cm); | ||||
} | ||||
} while (i < callbacks.length); | ||||
} | ||||
// Finish an operation, updating the display and signalling delayed events | ||||
function endOperation(cm) { | ||||
var op = cm.curOp, group = op.ownsGroup; | ||||
if (!group) return; | ||||
try { fireCallbacksForOps(group); } | ||||
finally { | ||||
operationGroup = null; | ||||
for (var i = 0; i < group.ops.length; i++) | ||||
group.ops[i].cm.curOp = null; | ||||
endOperations(group); | ||||
} | ||||
} | ||||
// The DOM updates done when an operation finishes are batched so | ||||
// that the minimum number of relayouts are required. | ||||
function endOperations(group) { | ||||
var ops = group.ops; | ||||
for (var i = 0; i < ops.length; i++) // Read DOM | ||||
endOperation_R1(ops[i]); | ||||
for (var i = 0; i < ops.length; i++) // Write DOM (maybe) | ||||
endOperation_W1(ops[i]); | ||||
for (var i = 0; i < ops.length; i++) // Read DOM | ||||
endOperation_R2(ops[i]); | ||||
for (var i = 0; i < ops.length; i++) // Write DOM (maybe) | ||||
endOperation_W2(ops[i]); | ||||
for (var i = 0; i < ops.length; i++) // Read DOM | ||||
endOperation_finish(ops[i]); | ||||
} | ||||
function endOperation_R1(op) { | ||||
var cm = op.cm, display = cm.display; | ||||
maybeClipScrollbars(cm); | ||||
if (op.updateMaxLine) findMaxLine(cm); | ||||
op.mustUpdate = op.viewChanged || op.forceUpdate || op.scrollTop != null || | ||||
op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom || | ||||
op.scrollToPos.to.line >= display.viewTo) || | ||||
display.maxLineChanged && cm.options.lineWrapping; | ||||
op.update = op.mustUpdate && | ||||
new DisplayUpdate(cm, op.mustUpdate && {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate); | ||||
} | ||||
function endOperation_W1(op) { | ||||
op.updatedDisplay = op.mustUpdate && updateDisplayIfNeeded(op.cm, op.update); | ||||
} | ||||
function endOperation_R2(op) { | ||||
var cm = op.cm, display = cm.display; | ||||
if (op.updatedDisplay) updateHeightsInViewport(cm); | ||||
op.barMeasure = measureForScrollbars(cm); | ||||
// If the max line changed since it was last measured, measure it, | ||||
// and ensure the document's width matches it. | ||||
// updateDisplay_W2 will use these properties to do the actual resizing | ||||
if (display.maxLineChanged && !cm.options.lineWrapping) { | ||||
op.adjustWidthTo = measureChar(cm, display.maxLine, display.maxLine.text.length).left + 3; | ||||
cm.display.sizerWidth = op.adjustWidthTo; | ||||
op.barMeasure.scrollWidth = | ||||
Math.max(display.scroller.clientWidth, display.sizer.offsetLeft + op.adjustWidthTo + scrollGap(cm) + cm.display.barWidth); | ||||
op.maxScrollLeft = Math.max(0, display.sizer.offsetLeft + op.adjustWidthTo - displayWidth(cm)); | ||||
} | ||||
if (op.updatedDisplay || op.selectionChanged) | ||||
op.preparedSelection = display.input.prepareSelection(); | ||||
} | ||||
function endOperation_W2(op) { | ||||
var cm = op.cm; | ||||
if (op.adjustWidthTo != null) { | ||||
cm.display.sizer.style.minWidth = op.adjustWidthTo + "px"; | ||||
if (op.maxScrollLeft < cm.doc.scrollLeft) | ||||
setScrollLeft(cm, Math.min(cm.display.scroller.scrollLeft, op.maxScrollLeft), true); | ||||
cm.display.maxLineChanged = false; | ||||
} | ||||
if (op.preparedSelection) | ||||
cm.display.input.showSelection(op.preparedSelection); | ||||
if (op.updatedDisplay) | ||||
setDocumentHeight(cm, op.barMeasure); | ||||
if (op.updatedDisplay || op.startHeight != cm.doc.height) | ||||
updateScrollbars(cm, op.barMeasure); | ||||
if (op.selectionChanged) restartBlink(cm); | ||||
if (cm.state.focused && op.updateInput) | ||||
cm.display.input.reset(op.typing); | ||||
if (op.focus && op.focus == activeElt()) ensureFocus(op.cm); | ||||
} | ||||
function endOperation_finish(op) { | ||||
var cm = op.cm, display = cm.display, doc = cm.doc; | ||||
if (op.updatedDisplay) postUpdateDisplay(cm, op.update); | ||||
// Abort mouse wheel delta measurement, when scrolling explicitly | ||||
if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos)) | ||||
display.wheelStartX = display.wheelStartY = null; | ||||
// Propagate the scroll position to the actual DOM scroller | ||||
if (op.scrollTop != null && (display.scroller.scrollTop != op.scrollTop || op.forceScroll)) { | ||||
doc.scrollTop = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop)); | ||||
display.scrollbars.setScrollTop(doc.scrollTop); | ||||
display.scroller.scrollTop = doc.scrollTop; | ||||
} | ||||
if (op.scrollLeft != null && (display.scroller.scrollLeft != op.scrollLeft || op.forceScroll)) { | ||||
doc.scrollLeft = Math.max(0, Math.min(display.scroller.scrollWidth - displayWidth(cm), op.scrollLeft)); | ||||
display.scrollbars.setScrollLeft(doc.scrollLeft); | ||||
display.scroller.scrollLeft = doc.scrollLeft; | ||||
alignHorizontally(cm); | ||||
} | ||||
// If we need to scroll a specific position into view, do so. | ||||
if (op.scrollToPos) { | ||||
var coords = scrollPosIntoView(cm, clipPos(doc, op.scrollToPos.from), | ||||
clipPos(doc, op.scrollToPos.to), op.scrollToPos.margin); | ||||
if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords); | ||||
} | ||||
// Fire events for markers that are hidden/unidden by editing or | ||||
// undoing | ||||
var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers; | ||||
if (hidden) for (var i = 0; i < hidden.length; ++i) | ||||
if (!hidden[i].lines.length) signal(hidden[i], "hide"); | ||||
if (unhidden) for (var i = 0; i < unhidden.length; ++i) | ||||
if (unhidden[i].lines.length) signal(unhidden[i], "unhide"); | ||||
if (display.wrapper.offsetHeight) | ||||
doc.scrollTop = cm.display.scroller.scrollTop; | ||||
// Fire change events, and delayed event handlers | ||||
if (op.changeObjs) | ||||
signal(cm, "changes", cm, op.changeObjs); | ||||
if (op.update) | ||||
op.update.finish(); | ||||
} | ||||
// Run the given function in an operation | ||||
function runInOp(cm, f) { | ||||
if (cm.curOp) return f(); | ||||
startOperation(cm); | ||||
try { return f(); } | ||||
finally { endOperation(cm); } | ||||
} | ||||
// Wraps a function in an operation. Returns the wrapped function. | ||||
function operation(cm, f) { | ||||
return function() { | ||||
if (cm.curOp) return f.apply(cm, arguments); | ||||
startOperation(cm); | ||||
try { return f.apply(cm, arguments); } | ||||
finally { endOperation(cm); } | ||||
}; | ||||
} | ||||
// Used to add methods to editor and doc instances, wrapping them in | ||||
// operations. | ||||
function methodOp(f) { | ||||
return function() { | ||||
if (this.curOp) return f.apply(this, arguments); | ||||
startOperation(this); | ||||
try { return f.apply(this, arguments); } | ||||
finally { endOperation(this); } | ||||
}; | ||||
} | ||||
function docMethodOp(f) { | ||||
return function() { | ||||
var cm = this.cm; | ||||
if (!cm || cm.curOp) return f.apply(this, arguments); | ||||
startOperation(cm); | ||||
try { return f.apply(this, arguments); } | ||||
finally { endOperation(cm); } | ||||
}; | ||||
} | ||||
// VIEW TRACKING | ||||
// These objects are used to represent the visible (currently drawn) | ||||
// part of the document. A LineView may correspond to multiple | ||||
// logical lines, if those are connected by collapsed ranges. | ||||
function LineView(doc, line, lineN) { | ||||
// The starting line | ||||
this.line = line; | ||||
// Continuing lines, if any | ||||
this.rest = visualLineContinued(line); | ||||
// Number of logical lines in this visual line | ||||
this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1; | ||||
this.node = this.text = null; | ||||
this.hidden = lineIsHidden(doc, line); | ||||
} | ||||
// Create a range of LineView objects for the given lines. | ||||
function buildViewArray(cm, from, to) { | ||||
var array = [], nextPos; | ||||
for (var pos = from; pos < to; pos = nextPos) { | ||||
var view = new LineView(cm.doc, getLine(cm.doc, pos), pos); | ||||
nextPos = pos + view.size; | ||||
array.push(view); | ||||
} | ||||
return array; | ||||
} | ||||
// Updates the display.view data structure for a given change to the | ||||
// document. From and to are in pre-change coordinates. Lendiff is | ||||
// the amount of lines added or subtracted by the change. This is | ||||
// used for changes that span multiple lines, or change the way | ||||
// lines are divided into visual lines. regLineChange (below) | ||||
// registers single-line changes. | ||||
function regChange(cm, from, to, lendiff) { | ||||
if (from == null) from = cm.doc.first; | ||||
if (to == null) to = cm.doc.first + cm.doc.size; | ||||
if (!lendiff) lendiff = 0; | ||||
var display = cm.display; | ||||
if (lendiff && to < display.viewTo && | ||||
(display.updateLineNumbers == null || display.updateLineNumbers > from)) | ||||
display.updateLineNumbers = from; | ||||
cm.curOp.viewChanged = true; | ||||
if (from >= display.viewTo) { // Change after | ||||
if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo) | ||||
resetView(cm); | ||||
} else if (to <= display.viewFrom) { // Change before | ||||
if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) { | ||||
resetView(cm); | ||||
} else { | ||||
display.viewFrom += lendiff; | ||||
display.viewTo += lendiff; | ||||
} | ||||
} else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap | ||||
resetView(cm); | ||||
} else if (from <= display.viewFrom) { // Top overlap | ||||
var cut = viewCuttingPoint(cm, to, to + lendiff, 1); | ||||
if (cut) { | ||||
display.view = display.view.slice(cut.index); | ||||
display.viewFrom = cut.lineN; | ||||
display.viewTo += lendiff; | ||||
} else { | ||||
resetView(cm); | ||||
} | ||||
} else if (to >= display.viewTo) { // Bottom overlap | ||||
var cut = viewCuttingPoint(cm, from, from, -1); | ||||
if (cut) { | ||||
display.view = display.view.slice(0, cut.index); | ||||
display.viewTo = cut.lineN; | ||||
} else { | ||||
resetView(cm); | ||||
} | ||||
} else { // Gap in the middle | ||||
var cutTop = viewCuttingPoint(cm, from, from, -1); | ||||
var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1); | ||||
if (cutTop && cutBot) { | ||||
display.view = display.view.slice(0, cutTop.index) | ||||
.concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN)) | ||||
.concat(display.view.slice(cutBot.index)); | ||||
display.viewTo += lendiff; | ||||
} else { | ||||
resetView(cm); | ||||
} | ||||
} | ||||
var ext = display.externalMeasured; | ||||
if (ext) { | ||||
if (to < ext.lineN) | ||||
ext.lineN += lendiff; | ||||
else if (from < ext.lineN + ext.size) | ||||
display.externalMeasured = null; | ||||
} | ||||
} | ||||
// Register a change to a single line. Type must be one of "text", | ||||
// "gutter", "class", "widget" | ||||
function regLineChange(cm, line, type) { | ||||
cm.curOp.viewChanged = true; | ||||
var display = cm.display, ext = cm.display.externalMeasured; | ||||
if (ext && line >= ext.lineN && line < ext.lineN + ext.size) | ||||
display.externalMeasured = null; | ||||
if (line < display.viewFrom || line >= display.viewTo) return; | ||||
var lineView = display.view[findViewIndex(cm, line)]; | ||||
if (lineView.node == null) return; | ||||
var arr = lineView.changes || (lineView.changes = []); | ||||
if (indexOf(arr, type) == -1) arr.push(type); | ||||
} | ||||
// Clear the view. | ||||
function resetView(cm) { | ||||
cm.display.viewFrom = cm.display.viewTo = cm.doc.first; | ||||
cm.display.view = []; | ||||
cm.display.viewOffset = 0; | ||||
} | ||||
// Find the view element corresponding to a given line. Return null | ||||
// when the line isn't visible. | ||||
function findViewIndex(cm, n) { | ||||
if (n >= cm.display.viewTo) return null; | ||||
n -= cm.display.viewFrom; | ||||
if (n < 0) return null; | ||||
var view = cm.display.view; | ||||
for (var i = 0; i < view.length; i++) { | ||||
n -= view[i].size; | ||||
if (n < 0) return i; | ||||
} | ||||
} | ||||
function viewCuttingPoint(cm, oldN, newN, dir) { | ||||
var index = findViewIndex(cm, oldN), diff, view = cm.display.view; | ||||
if (!sawCollapsedSpans || newN == cm.doc.first + cm.doc.size) | ||||
return {index: index, lineN: newN}; | ||||
for (var i = 0, n = cm.display.viewFrom; i < index; i++) | ||||
n += view[i].size; | ||||
if (n != oldN) { | ||||
if (dir > 0) { | ||||
if (index == view.length - 1) return null; | ||||
diff = (n + view[index].size) - oldN; | ||||
index++; | ||||
} else { | ||||
diff = n - oldN; | ||||
} | ||||
oldN += diff; newN += diff; | ||||
} | ||||
while (visualLineNo(cm.doc, newN) != newN) { | ||||
if (index == (dir < 0 ? 0 : view.length - 1)) return null; | ||||
newN += dir * view[index - (dir < 0 ? 1 : 0)].size; | ||||
index += dir; | ||||
} | ||||
return {index: index, lineN: newN}; | ||||
} | ||||
// Force the view to cover a given range, adding empty view element | ||||
// or clipping off existing ones as needed. | ||||
function adjustView(cm, from, to) { | ||||
var display = cm.display, view = display.view; | ||||
if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) { | ||||
display.view = buildViewArray(cm, from, to); | ||||
display.viewFrom = from; | ||||
} else { | ||||
if (display.viewFrom > from) | ||||
display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view); | ||||
else if (display.viewFrom < from) | ||||
display.view = display.view.slice(findViewIndex(cm, from)); | ||||
display.viewFrom = from; | ||||
if (display.viewTo < to) | ||||
display.view = display.view.concat(buildViewArray(cm, display.viewTo, to)); | ||||
else if (display.viewTo > to) | ||||
display.view = display.view.slice(0, findViewIndex(cm, to)); | ||||
} | ||||
display.viewTo = to; | ||||
} | ||||
// Count the number of lines in the view whose DOM representation is | ||||
// out of date (or nonexistent). | ||||
function countDirtyView(cm) { | ||||
var view = cm.display.view, dirty = 0; | ||||
for (var i = 0; i < view.length; i++) { | ||||
var lineView = view[i]; | ||||
if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty; | ||||
} | ||||
return dirty; | ||||
} | ||||
// EVENT HANDLERS | ||||
// Attach the necessary event handlers when initializing the editor | ||||
function registerEventHandlers(cm) { | ||||
var d = cm.display; | ||||
on(d.scroller, "mousedown", operation(cm, onMouseDown)); | ||||
// Older IE's will not fire a second mousedown for a double click | ||||
if (ie && ie_version < 11) | ||||
on(d.scroller, "dblclick", operation(cm, function(e) { | ||||
if (signalDOMEvent(cm, e)) return; | ||||
var pos = posFromMouse(cm, e); | ||||
if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; | ||||
e_preventDefault(e); | ||||
var word = cm.findWordAt(pos); | ||||
extendSelection(cm.doc, word.anchor, word.head); | ||||
})); | ||||
else | ||||
on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); | ||||
// Some browsers fire contextmenu *after* opening the menu, at | ||||
// which point we can't mess with it anymore. Context menu is | ||||
// handled in onMouseDown for these browsers. | ||||
if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); | ||||
// Used to suppress mouse event handling when a touch happens | ||||
var touchFinished, prevTouch = {end: 0}; | ||||
function finishTouch() { | ||||
if (d.activeTouch) { | ||||
touchFinished = setTimeout(function() {d.activeTouch = null;}, 1000); | ||||
prevTouch = d.activeTouch; | ||||
prevTouch.end = +new Date; | ||||
} | ||||
}; | ||||
function isMouseLikeTouchEvent(e) { | ||||
if (e.touches.length != 1) return false; | ||||
var touch = e.touches[0]; | ||||
return touch.radiusX <= 1 && touch.radiusY <= 1; | ||||
} | ||||
function farAway(touch, other) { | ||||
if (other.left == null) return true; | ||||
var dx = other.left - touch.left, dy = other.top - touch.top; | ||||
return dx * dx + dy * dy > 20 * 20; | ||||
} | ||||
on(d.scroller, "touchstart", function(e) { | ||||
if (!isMouseLikeTouchEvent(e)) { | ||||
clearTimeout(touchFinished); | ||||
var now = +new Date; | ||||
d.activeTouch = {start: now, moved: false, | ||||
prev: now - prevTouch.end <= 300 ? prevTouch : null}; | ||||
if (e.touches.length == 1) { | ||||
d.activeTouch.left = e.touches[0].pageX; | ||||
d.activeTouch.top = e.touches[0].pageY; | ||||
} | ||||
} | ||||
}); | ||||
on(d.scroller, "touchmove", function() { | ||||
if (d.activeTouch) d.activeTouch.moved = true; | ||||
}); | ||||
on(d.scroller, "touchend", function(e) { | ||||
var touch = d.activeTouch; | ||||
if (touch && !eventInWidget(d, e) && touch.left != null && | ||||
!touch.moved && new Date - touch.start < 300) { | ||||
var pos = cm.coordsChar(d.activeTouch, "page"), range; | ||||
if (!touch.prev || farAway(touch, touch.prev)) // Single tap | ||||
range = new Range(pos, pos); | ||||
else if (!touch.prev.prev || farAway(touch, touch.prev.prev)) // Double tap | ||||
range = cm.findWordAt(pos); | ||||
else // Triple tap | ||||
range = new Range(Pos(pos.line, 0), clipPos(cm.doc, Pos(pos.line + 1, 0))); | ||||
cm.setSelection(range.anchor, range.head); | ||||
cm.focus(); | ||||
e_preventDefault(e); | ||||
} | ||||
finishTouch(); | ||||
}); | ||||
on(d.scroller, "touchcancel", finishTouch); | ||||
// Sync scrolling between fake scrollbars and real scrollable | ||||
// area, ensure viewport is updated when scrolling. | ||||
on(d.scroller, "scroll", function() { | ||||
if (d.scroller.clientHeight) { | ||||
setScrollTop(cm, d.scroller.scrollTop); | ||||
setScrollLeft(cm, d.scroller.scrollLeft, true); | ||||
signal(cm, "scroll", cm); | ||||
} | ||||
}); | ||||
// Listen to wheel events in order to try and update the viewport on time. | ||||
on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); | ||||
on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); | ||||
// Prevent wrapper from ever scrolling | ||||
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); | ||||
d.dragFunctions = { | ||||
simple: function(e) {if (!signalDOMEvent(cm, e)) e_stop(e);}, | ||||
start: function(e){onDragStart(cm, e);}, | ||||
drop: operation(cm, onDrop) | ||||
}; | ||||
var inp = d.input.getField(); | ||||
on(inp, "keyup", function(e) { onKeyUp.call(cm, e); }); | ||||
on(inp, "keydown", operation(cm, onKeyDown)); | ||||
on(inp, "keypress", operation(cm, onKeyPress)); | ||||
on(inp, "focus", bind(onFocus, cm)); | ||||
on(inp, "blur", bind(onBlur, cm)); | ||||
} | ||||
function dragDropChanged(cm, value, old) { | ||||
var wasOn = old && old != CodeMirror.Init; | ||||
if (!value != !wasOn) { | ||||
var funcs = cm.display.dragFunctions; | ||||
var toggle = value ? on : off; | ||||
toggle(cm.display.scroller, "dragstart", funcs.start); | ||||
toggle(cm.display.scroller, "dragenter", funcs.simple); | ||||
toggle(cm.display.scroller, "dragover", funcs.simple); | ||||
toggle(cm.display.scroller, "drop", funcs.drop); | ||||
} | ||||
} | ||||
// Called when the window resizes | ||||
function onResize(cm) { | ||||
var d = cm.display; | ||||
if (d.lastWrapHeight == d.wrapper.clientHeight && d.lastWrapWidth == d.wrapper.clientWidth) | ||||
return; | ||||
// Might be a text scaling operation, clear size caches. | ||||
d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null; | ||||
d.scrollbarsClipped = false; | ||||
cm.setSize(); | ||||
} | ||||
// MOUSE EVENTS | ||||
// Return true when the given mouse event happened in a widget | ||||
function eventInWidget(display, e) { | ||||
for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { | ||||
if (!n || (n.nodeType == 1 && n.getAttribute("cm-ignore-events") == "true") || | ||||
(n.parentNode == display.sizer && n != display.mover)) | ||||
return true; | ||||
} | ||||
} | ||||
// Given a mouse event, find the corresponding position. If liberal | ||||
// is false, it checks whether a gutter or scrollbar was clicked, | ||||
// and returns null if it was. forRect is used by rectangular | ||||
// selections, and tries to estimate a character position even for | ||||
// coordinates beyond the right of the text. | ||||
function posFromMouse(cm, e, liberal, forRect) { | ||||
var display = cm.display; | ||||
if (!liberal && e_target(e).getAttribute("cm-not-content") == "true") return null; | ||||
var x, y, space = display.lineSpace.getBoundingClientRect(); | ||||
// Fails unpredictably on IE[67] when mouse is dragged around quickly. | ||||
try { x = e.clientX - space.left; y = e.clientY - space.top; } | ||||
catch (e) { return null; } | ||||
var coords = coordsChar(cm, x, y), line; | ||||
if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) { | ||||
var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length; | ||||
coords = Pos(coords.line, Math.max(0, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff)); | ||||
} | ||||
return coords; | ||||
} | ||||
// A mouse down can be a single click, double click, triple click, | ||||
// start of selection drag, start of text drag, new cursor | ||||
// (ctrl-click), rectangle drag (alt-drag), or xwin | ||||
// middle-click-paste. Or it might be a click on something we should | ||||
// not interfere with, such as a scrollbar or widget. | ||||
function onMouseDown(e) { | ||||
var cm = this, display = cm.display; | ||||
if (display.activeTouch && display.input.supportsTouch() || signalDOMEvent(cm, e)) return; | ||||
display.shift = e.shiftKey; | ||||
if (eventInWidget(display, e)) { | ||||
if (!webkit) { | ||||
// Briefly turn off draggability, to allow widgets to do | ||||
// normal dragging things. | ||||
display.scroller.draggable = false; | ||||
setTimeout(function(){display.scroller.draggable = true;}, 100); | ||||
} | ||||
return; | ||||
} | ||||
if (clickInGutter(cm, e)) return; | ||||
var start = posFromMouse(cm, e); | ||||
window.focus(); | ||||
switch (e_button(e)) { | ||||
case 1: | ||||
if (start) | ||||
leftButtonDown(cm, e, start); | ||||
else if (e_target(e) == display.scroller) | ||||
e_preventDefault(e); | ||||
break; | ||||
case 2: | ||||
if (webkit) cm.state.lastMiddleDown = +new Date; | ||||
if (start) extendSelection(cm.doc, start); | ||||
setTimeout(function() {display.input.focus();}, 20); | ||||
e_preventDefault(e); | ||||
break; | ||||
case 3: | ||||
if (captureRightClick) onContextMenu(cm, e); | ||||
else delayBlurEvent(cm); | ||||
break; | ||||
} | ||||
} | ||||
var lastClick, lastDoubleClick; | ||||
function leftButtonDown(cm, e, start) { | ||||
if (ie) setTimeout(bind(ensureFocus, cm), 0); | ||||
else cm.curOp.focus = activeElt(); | ||||
var now = +new Date, type; | ||||
if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) { | ||||
type = "triple"; | ||||
} else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) { | ||||
type = "double"; | ||||
lastDoubleClick = {time: now, pos: start}; | ||||
} else { | ||||
type = "single"; | ||||
lastClick = {time: now, pos: start}; | ||||
} | ||||
var sel = cm.doc.sel, modifier = mac ? e.metaKey : e.ctrlKey, contained; | ||||
if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && | ||||
type == "single" && (contained = sel.contains(start)) > -1 && | ||||
(cmp((contained = sel.ranges[contained]).from(), start) < 0 || start.xRel > 0) && | ||||
(cmp(contained.to(), start) > 0 || start.xRel < 0)) | ||||
leftButtonStartDrag(cm, e, start, modifier); | ||||
else | ||||
leftButtonSelect(cm, e, start, type, modifier); | ||||
} | ||||
// Start a text drag. When it ends, see if any dragging actually | ||||
// happen, and treat as a click if it didn't. | ||||
function leftButtonStartDrag(cm, e, start, modifier) { | ||||
var display = cm.display, startTime = +new Date; | ||||
var dragEnd = operation(cm, function(e2) { | ||||
if (webkit) display.scroller.draggable = false; | ||||
cm.state.draggingText = false; | ||||
off(document, "mouseup", dragEnd); | ||||
off(display.scroller, "drop", dragEnd); | ||||
if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) { | ||||
e_preventDefault(e2); | ||||
if (!modifier && +new Date - 200 < startTime) | ||||
extendSelection(cm.doc, start); | ||||
// Work around unexplainable focus problem in IE9 (#2127) and Chrome (#3081) | ||||
if (webkit || ie && ie_version == 9) | ||||
setTimeout(function() {document.body.focus(); display.input.focus();}, 20); | ||||
else | ||||
display.input.focus(); | ||||
} | ||||
}); | ||||
// Let the drag handler handle this. | ||||
if (webkit) display.scroller.draggable = true; | ||||
cm.state.draggingText = dragEnd; | ||||
// IE's approach to draggable | ||||
if (display.scroller.dragDrop) display.scroller.dragDrop(); | ||||
on(document, "mouseup", dragEnd); | ||||
on(display.scroller, "drop", dragEnd); | ||||
} | ||||
// Normal selection, as opposed to text dragging. | ||||
function leftButtonSelect(cm, e, start, type, addNew) { | ||||
var display = cm.display, doc = cm.doc; | ||||
e_preventDefault(e); | ||||
var ourRange, ourIndex, startSel = doc.sel, ranges = startSel.ranges; | ||||
if (addNew && !e.shiftKey) { | ||||
ourIndex = doc.sel.contains(start); | ||||
if (ourIndex > -1) | ||||
ourRange = ranges[ourIndex]; | ||||
else | ||||
ourRange = new Range(start, start); | ||||
} else { | ||||
ourRange = doc.sel.primary(); | ||||
ourIndex = doc.sel.primIndex; | ||||
} | ||||
if (e.altKey) { | ||||
type = "rect"; | ||||
if (!addNew) ourRange = new Range(start, start); | ||||
start = posFromMouse(cm, e, true, true); | ||||
ourIndex = -1; | ||||
} else if (type == "double") { | ||||
var word = cm.findWordAt(start); | ||||
if (cm.display.shift || doc.extend) | ||||
ourRange = extendRange(doc, ourRange, word.anchor, word.head); | ||||
else | ||||
ourRange = word; | ||||
} else if (type == "triple") { | ||||
var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0))); | ||||
if (cm.display.shift || doc.extend) | ||||
ourRange = extendRange(doc, ourRange, line.anchor, line.head); | ||||
else | ||||
ourRange = line; | ||||
} else { | ||||
ourRange = extendRange(doc, ourRange, start); | ||||
} | ||||
if (!addNew) { | ||||
ourIndex = 0; | ||||
setSelection(doc, new Selection([ourRange], 0), sel_mouse); | ||||
startSel = doc.sel; | ||||
} else if (ourIndex == -1) { | ||||
ourIndex = ranges.length; | ||||
setSelection(doc, normalizeSelection(ranges.concat([ourRange]), ourIndex), | ||||
{scroll: false, origin: "*mouse"}); | ||||
} else if (ranges.length > 1 && ranges[ourIndex].empty() && type == "single" && !e.shiftKey) { | ||||
setSelection(doc, normalizeSelection(ranges.slice(0, ourIndex).concat(ranges.slice(ourIndex + 1)), 0)); | ||||
startSel = doc.sel; | ||||
} else { | ||||
replaceOneSelection(doc, ourIndex, ourRange, sel_mouse); | ||||
} | ||||
var lastPos = start; | ||||
function extendTo(pos) { | ||||
if (cmp(lastPos, pos) == 0) return; | ||||
lastPos = pos; | ||||
if (type == "rect") { | ||||
var ranges = [], tabSize = cm.options.tabSize; | ||||
var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize); | ||||
var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize); | ||||
var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol); | ||||
for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line)); | ||||
line <= end; line++) { | ||||
var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize); | ||||
if (left == right) | ||||
ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos))); | ||||
else if (text.length > leftPos) | ||||
ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize)))); | ||||
} | ||||
if (!ranges.length) ranges.push(new Range(start, start)); | ||||
setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), | ||||
{origin: "*mouse", scroll: false}); | ||||
cm.scrollIntoView(pos); | ||||
} else { | ||||
var oldRange = ourRange; | ||||
var anchor = oldRange.anchor, head = pos; | ||||
if (type != "single") { | ||||
if (type == "double") | ||||
var range = cm.findWordAt(pos); | ||||
else | ||||
var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0))); | ||||
if (cmp(range.anchor, anchor) > 0) { | ||||
head = range.head; | ||||
anchor = minPos(oldRange.from(), range.anchor); | ||||
} else { | ||||
head = range.anchor; | ||||
anchor = maxPos(oldRange.to(), range.head); | ||||
} | ||||
} | ||||
var ranges = startSel.ranges.slice(0); | ||||
ranges[ourIndex] = new Range(clipPos(doc, anchor), head); | ||||
setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse); | ||||
} | ||||
} | ||||
var editorSize = display.wrapper.getBoundingClientRect(); | ||||
// Used to ensure timeout re-tries don't fire when another extend | ||||
// happened in the meantime (clearTimeout isn't reliable -- at | ||||
// least on Chrome, the timeouts still happen even when cleared, | ||||
// if the clear happens after their scheduled firing time). | ||||
var counter = 0; | ||||
function extend(e) { | ||||
var curCount = ++counter; | ||||
var cur = posFromMouse(cm, e, true, type == "rect"); | ||||
if (!cur) return; | ||||
if (cmp(cur, lastPos) != 0) { | ||||
cm.curOp.focus = activeElt(); | ||||
extendTo(cur); | ||||
var visible = visibleLines(display, doc); | ||||
if (cur.line >= visible.to || cur.line < visible.from) | ||||
setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150); | ||||
} else { | ||||
var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0; | ||||
if (outside) setTimeout(operation(cm, function() { | ||||
if (counter != curCount) return; | ||||
display.scroller.scrollTop += outside; | ||||
extend(e); | ||||
}), 50); | ||||
} | ||||
} | ||||
function done(e) { | ||||
counter = Infinity; | ||||
e_preventDefault(e); | ||||
display.input.focus(); | ||||
off(document, "mousemove", move); | ||||
off(document, "mouseup", up); | ||||
doc.history.lastSelOrigin = null; | ||||
} | ||||
var move = operation(cm, function(e) { | ||||
if (!e_button(e)) done(e); | ||||
else extend(e); | ||||
}); | ||||
var up = operation(cm, done); | ||||
on(document, "mousemove", move); | ||||
on(document, "mouseup", up); | ||||
} | ||||
// Determines whether an event happened in the gutter, and fires the | ||||
// handlers for the corresponding event. | ||||
function gutterEvent(cm, e, type, prevent, signalfn) { | ||||
try { var mX = e.clientX, mY = e.clientY; } | ||||
catch(e) { return false; } | ||||
if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false; | ||||
if (prevent) e_preventDefault(e); | ||||
var display = cm.display; | ||||
var lineBox = display.lineDiv.getBoundingClientRect(); | ||||
if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e); | ||||
mY -= lineBox.top - display.viewOffset; | ||||
for (var i = 0; i < cm.options.gutters.length; ++i) { | ||||
var g = display.gutters.childNodes[i]; | ||||
if (g && g.getBoundingClientRect().right >= mX) { | ||||
var line = lineAtHeight(cm.doc, mY); | ||||
var gutter = cm.options.gutters[i]; | ||||
signalfn(cm, type, cm, line, gutter, e); | ||||
return e_defaultPrevented(e); | ||||
} | ||||
} | ||||
} | ||||
function clickInGutter(cm, e) { | ||||
return gutterEvent(cm, e, "gutterClick", true, signalLater); | ||||
} | ||||
// Kludge to work around strange IE behavior where it'll sometimes | ||||
// re-fire a series of drag-related events right after the drop (#1551) | ||||
var lastDrop = 0; | ||||
function onDrop(e) { | ||||
var cm = this; | ||||
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) | ||||
return; | ||||
e_preventDefault(e); | ||||
if (ie) lastDrop = +new Date; | ||||
var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; | ||||
if (!pos || isReadOnly(cm)) return; | ||||
// Might be a file drop, in which case we simply extract the text | ||||
// and insert it. | ||||
if (files && files.length && window.FileReader && window.File) { | ||||
var n = files.length, text = Array(n), read = 0; | ||||
var loadFile = function(file, i) { | ||||
var reader = new FileReader; | ||||
reader.onload = operation(cm, function() { | ||||
text[i] = reader.result; | ||||
if (++read == n) { | ||||
pos = clipPos(cm.doc, pos); | ||||
var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}; | ||||
makeChange(cm.doc, change); | ||||
setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change))); | ||||
} | ||||
}); | ||||
reader.readAsText(file); | ||||
}; | ||||
for (var i = 0; i < n; ++i) loadFile(files[i], i); | ||||
} else { // Normal drop | ||||
// Don't do a replace if the drop happened inside of the selected text. | ||||
if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) { | ||||
cm.state.draggingText(e); | ||||
// Ensure the editor is re-focused | ||||
setTimeout(function() {cm.display.input.focus();}, 20); | ||||
return; | ||||
} | ||||
try { | ||||
var text = e.dataTransfer.getData("Text"); | ||||
if (text) { | ||||
if (cm.state.draggingText && !(mac ? e.altKey : e.ctrlKey)) | ||||
var selected = cm.listSelections(); | ||||
setSelectionNoUndo(cm.doc, simpleSelection(pos, pos)); | ||||
if (selected) for (var i = 0; i < selected.length; ++i) | ||||
replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag"); | ||||
cm.replaceSelection(text, "around", "paste"); | ||||
cm.display.input.focus(); | ||||
} | ||||
} | ||||
catch(e){} | ||||
} | ||||
} | ||||
function onDragStart(cm, e) { | ||||
if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } | ||||
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; | ||||
e.dataTransfer.setData("Text", cm.getSelection()); | ||||
// Use dummy image instead of default browsers image. | ||||
// Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there. | ||||
if (e.dataTransfer.setDragImage && !safari) { | ||||
var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); | ||||
img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw=="; | ||||
if (presto) { | ||||
img.width = img.height = 1; | ||||
cm.display.wrapper.appendChild(img); | ||||
// Force a relayout, or Opera won't use our image for some obscure reason | ||||
img._top = img.offsetTop; | ||||
} | ||||
e.dataTransfer.setDragImage(img, 0, 0); | ||||
if (presto) img.parentNode.removeChild(img); | ||||
} | ||||
} | ||||
// SCROLL EVENTS | ||||
// Sync the scrollable area and scrollbars, ensure the viewport | ||||
// covers the visible area. | ||||
function setScrollTop(cm, val) { | ||||
if (Math.abs(cm.doc.scrollTop - val) < 2) return; | ||||
cm.doc.scrollTop = val; | ||||
if (!gecko) updateDisplaySimple(cm, {top: val}); | ||||
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; | ||||
cm.display.scrollbars.setScrollTop(val); | ||||
if (gecko) updateDisplaySimple(cm); | ||||
startWorker(cm, 100); | ||||
} | ||||
// Sync scroller and scrollbar, ensure the gutter elements are | ||||
// aligned. | ||||
function setScrollLeft(cm, val, isScroller) { | ||||
if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return; | ||||
val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth); | ||||
cm.doc.scrollLeft = val; | ||||
alignHorizontally(cm); | ||||
if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val; | ||||
cm.display.scrollbars.setScrollLeft(val); | ||||
} | ||||
// Since the delta values reported on mouse wheel events are | ||||
// unstandardized between browsers and even browser versions, and | ||||
// generally horribly unpredictable, this code starts by measuring | ||||
// the scroll effect that the first few mouse wheel events have, | ||||
// and, from that, detects the way it can convert deltas to pixel | ||||
// offsets afterwards. | ||||
// | ||||
// The reason we want to know the amount a wheel event will scroll | ||||
// is that it gives us a chance to update the display before the | ||||
// actual scrolling happens, reducing flickering. | ||||
var wheelSamples = 0, wheelPixelsPerUnit = null; | ||||
// Fill in a browser-detected starting value on browsers where we | ||||
// know one. These don't have to be accurate -- the result of them | ||||
// being wrong would just be a slight flicker on the first wheel | ||||
// scroll (if it is large enough). | ||||
if (ie) wheelPixelsPerUnit = -.53; | ||||
else if (gecko) wheelPixelsPerUnit = 15; | ||||
else if (chrome) wheelPixelsPerUnit = -.7; | ||||
else if (safari) wheelPixelsPerUnit = -1/3; | ||||
var wheelEventDelta = function(e) { | ||||
var dx = e.wheelDeltaX, dy = e.wheelDeltaY; | ||||
if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail; | ||||
if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail; | ||||
else if (dy == null) dy = e.wheelDelta; | ||||
return {x: dx, y: dy}; | ||||
}; | ||||
CodeMirror.wheelEventPixels = function(e) { | ||||
var delta = wheelEventDelta(e); | ||||
delta.x *= wheelPixelsPerUnit; | ||||
delta.y *= wheelPixelsPerUnit; | ||||
return delta; | ||||
}; | ||||
function onScrollWheel(cm, e) { | ||||
var delta = wheelEventDelta(e), dx = delta.x, dy = delta.y; | ||||
var display = cm.display, scroll = display.scroller; | ||||
// Quit if there's nothing to scroll here | ||||
if (!(dx && scroll.scrollWidth > scroll.clientWidth || | ||||
dy && scroll.scrollHeight > scroll.clientHeight)) return; | ||||
// Webkit browsers on OS X abort momentum scrolls when the target | ||||
// of the scroll event is removed from the scrollable element. | ||||
// This hack (see related code in patchDisplay) makes sure the | ||||
// element is kept around. | ||||
if (dy && mac && webkit) { | ||||
outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) { | ||||
for (var i = 0; i < view.length; i++) { | ||||
if (view[i].node == cur) { | ||||
cm.display.currentWheelTarget = cur; | ||||
break outer; | ||||
} | ||||
} | ||||
} | ||||
} | ||||
// On some browsers, horizontal scrolling will cause redraws to | ||||
// happen before the gutter has been realigned, causing it to | ||||
// wriggle around in a most unseemly way. When we have an | ||||
// estimated pixels/delta value, we just handle horizontal | ||||
// scrolling entirely here. It'll be slightly off from native, but | ||||
// better than glitching out. | ||||
if (dx && !gecko && !presto && wheelPixelsPerUnit != null) { | ||||
if (dy) | ||||
setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight))); | ||||
setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth))); | ||||
e_preventDefault(e); | ||||
display.wheelStartX = null; // Abort measurement, if in progress | ||||
return; | ||||
} | ||||
// 'Project' the visible viewport to cover the area that is being | ||||
// scrolled into view (if we know enough to estimate it). | ||||
if (dy && wheelPixelsPerUnit != null) { | ||||
var pixels = dy * wheelPixelsPerUnit; | ||||
var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight; | ||||
if (pixels < 0) top = Math.max(0, top + pixels - 50); | ||||
else bot = Math.min(cm.doc.height, bot + pixels + 50); | ||||
updateDisplaySimple(cm, {top: top, bottom: bot}); | ||||
} | ||||
if (wheelSamples < 20) { | ||||
if (display.wheelStartX == null) { | ||||
display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop; | ||||
display.wheelDX = dx; display.wheelDY = dy; | ||||
setTimeout(function() { | ||||
if (display.wheelStartX == null) return; | ||||
var movedX = scroll.scrollLeft - display.wheelStartX; | ||||
var movedY = scroll.scrollTop - display.wheelStartY; | ||||
var sample = (movedY && display.wheelDY && movedY / display.wheelDY) || | ||||
(movedX && display.wheelDX && movedX / display.wheelDX); | ||||
display.wheelStartX = display.wheelStartY = null; | ||||
if (!sample) return; | ||||
wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1); | ||||
++wheelSamples; | ||||
}, 200); | ||||
} else { | ||||
display.wheelDX += dx; display.wheelDY += dy; | ||||
} | ||||
} | ||||
} | ||||
// KEY EVENTS | ||||
// Run a handler that was bound to a key. | ||||
function doHandleBinding(cm, bound, dropShift) { | ||||
if (typeof bound == "string") { | ||||
bound = commands[bound]; | ||||
if (!bound) return false; | ||||
} | ||||
// Ensure previous input has been read, so that the handler sees a | ||||
// consistent view of the document | ||||
cm.display.input.ensurePolled(); | ||||
var prevShift = cm.display.shift, done = false; | ||||
try { | ||||
if (isReadOnly(cm)) cm.state.suppressEdits = true; | ||||
if (dropShift) cm.display.shift = false; | ||||
done = bound(cm) != Pass; | ||||
} finally { | ||||
cm.display.shift = prevShift; | ||||
cm.state.suppressEdits = false; | ||||
} | ||||
return done; | ||||
} | ||||
function lookupKeyForEditor(cm, name, handle) { | ||||
for (var i = 0; i < cm.state.keyMaps.length; i++) { | ||||
var result = lookupKey(name, cm.state.keyMaps[i], handle, cm); | ||||
if (result) return result; | ||||
} | ||||
return (cm.options.extraKeys && lookupKey(name, cm.options.extraKeys, handle, cm)) | ||||
|| lookupKey(name, cm.options.keyMap, handle, cm); | ||||
} | ||||
var stopSeq = new Delayed; | ||||
function dispatchKey(cm, name, e, handle) { | ||||
var seq = cm.state.keySeq; | ||||
if (seq) { | ||||
if (isModifierKey(name)) return "handled"; | ||||
stopSeq.set(50, function() { | ||||
if (cm.state.keySeq == seq) { | ||||
cm.state.keySeq = null; | ||||
cm.display.input.reset(); | ||||
} | ||||
}); | ||||
name = seq + " " + name; | ||||
} | ||||
var result = lookupKeyForEditor(cm, name, handle); | ||||
if (result == "multi") | ||||
cm.state.keySeq = name; | ||||
if (result == "handled") | ||||
signalLater(cm, "keyHandled", cm, name, e); | ||||
if (result == "handled" || result == "multi") { | ||||
e_preventDefault(e); | ||||
restartBlink(cm); | ||||
} | ||||
if (seq && !result && /\'$/.test(name)) { | ||||
e_preventDefault(e); | ||||
return true; | ||||
} | ||||
return !!result; | ||||
} | ||||
// Handle a key from the keydown event. | ||||
function handleKeyBinding(cm, e) { | ||||
var name = keyName(e, true); | ||||
if (!name) return false; | ||||
if (e.shiftKey && !cm.state.keySeq) { | ||||
// First try to resolve full name (including 'Shift-'). Failing | ||||
// that, see if there is a cursor-motion command (starting with | ||||
// 'go') bound to the keyname without 'Shift-'. | ||||
return dispatchKey(cm, "Shift-" + name, e, function(b) {return doHandleBinding(cm, b, true);}) | ||||
|| dispatchKey(cm, name, e, function(b) { | ||||
if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) | ||||
return doHandleBinding(cm, b); | ||||
}); | ||||
} else { | ||||
return dispatchKey(cm, name, e, function(b) { return doHandleBinding(cm, b); }); | ||||
} | ||||
} | ||||
// Handle a key from the keypress event | ||||
function handleCharBinding(cm, e, ch) { | ||||
return dispatchKey(cm, "'" + ch + "'", e, | ||||
function(b) { return doHandleBinding(cm, b, true); }); | ||||
} | ||||
var lastStoppedKey = null; | ||||
function onKeyDown(e) { | ||||
var cm = this; | ||||
cm.curOp.focus = activeElt(); | ||||
if (signalDOMEvent(cm, e)) return; | ||||
// IE does strange things with escape. | ||||
if (ie && ie_version < 11 && e.keyCode == 27) e.returnValue = false; | ||||
var code = e.keyCode; | ||||
cm.display.shift = code == 16 || e.shiftKey; | ||||
var handled = handleKeyBinding(cm, e); | ||||
if (presto) { | ||||
lastStoppedKey = handled ? code : null; | ||||
// Opera has no cut event... we try to at least catch the key combo | ||||
if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey)) | ||||
cm.replaceSelection("", null, "cut"); | ||||
} | ||||
// Turn mouse into crosshair when Alt is held on Mac. | ||||
if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className)) | ||||
showCrossHair(cm); | ||||
} | ||||
function showCrossHair(cm) { | ||||
var lineDiv = cm.display.lineDiv; | ||||
addClass(lineDiv, "CodeMirror-crosshair"); | ||||
function up(e) { | ||||
if (e.keyCode == 18 || !e.altKey) { | ||||
rmClass(lineDiv, "CodeMirror-crosshair"); | ||||
off(document, "keyup", up); | ||||
off(document, "mouseover", up); | ||||
} | ||||
} | ||||
on(document, "keyup", up); | ||||
on(document, "mouseover", up); | ||||
} | ||||
function onKeyUp(e) { | ||||
if (e.keyCode == 16) this.doc.sel.shift = false; | ||||
signalDOMEvent(this, e); | ||||
} | ||||
function onKeyPress(e) { | ||||
var cm = this; | ||||
if (eventInWidget(cm.display, e) || signalDOMEvent(cm, e) || e.ctrlKey && !e.altKey || mac && e.metaKey) return; | ||||
var keyCode = e.keyCode, charCode = e.charCode; | ||||
if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} | ||||
if ((presto && (!e.which || e.which < 10)) && handleKeyBinding(cm, e)) return; | ||||
var ch = String.fromCharCode(charCode == null ? keyCode : charCode); | ||||
if (handleCharBinding(cm, e, ch)) return; | ||||
cm.display.input.onKeyPress(e); | ||||
} | ||||
// FOCUS/BLUR EVENTS | ||||
function delayBlurEvent(cm) { | ||||
cm.state.delayingBlurEvent = true; | ||||
setTimeout(function() { | ||||
if (cm.state.delayingBlurEvent) { | ||||
cm.state.delayingBlurEvent = false; | ||||
onBlur(cm); | ||||
} | ||||
}, 100); | ||||
} | ||||
function onFocus(cm) { | ||||
if (cm.state.delayingBlurEvent) cm.state.delayingBlurEvent = false; | ||||
if (cm.options.readOnly == "nocursor") return; | ||||
if (!cm.state.focused) { | ||||
signal(cm, "focus", cm); | ||||
cm.state.focused = true; | ||||
addClass(cm.display.wrapper, "CodeMirror-focused"); | ||||
// This test prevents this from firing when a context | ||||
// menu is closed (since the input reset would kill the | ||||
// select-all detection hack) | ||||
if (!cm.curOp && cm.display.selForContextMenu != cm.doc.sel) { | ||||
cm.display.input.reset(); | ||||
if (webkit) setTimeout(function() { cm.display.input.reset(true); }, 20); // Issue #1730 | ||||
} | ||||
cm.display.input.receivedFocus(); | ||||
} | ||||
restartBlink(cm); | ||||
} | ||||
function onBlur(cm) { | ||||
if (cm.state.delayingBlurEvent) return; | ||||
if (cm.state.focused) { | ||||
signal(cm, "blur", cm); | ||||
cm.state.focused = false; | ||||
rmClass(cm.display.wrapper, "CodeMirror-focused"); | ||||
} | ||||
clearInterval(cm.display.blinker); | ||||
setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150); | ||||
} | ||||
// CONTEXT MENU HANDLING | ||||
// To make the context menu work, we need to briefly unhide the | ||||
// textarea (making it as unobtrusive as possible) to let the | ||||
// right-click take effect on it. | ||||
function onContextMenu(cm, e) { | ||||
if (eventInWidget(cm.display, e) || contextMenuInGutter(cm, e)) return; | ||||
cm.display.input.onContextMenu(e); | ||||
} | ||||
function contextMenuInGutter(cm, e) { | ||||
if (!hasHandler(cm, "gutterContextMenu")) return false; | ||||
return gutterEvent(cm, e, "gutterContextMenu", false, signal); | ||||
} | ||||
// UPDATING | ||||
// Compute the position of the end of a change (its 'to' property | ||||
// refers to the pre-change end). | ||||
var changeEnd = CodeMirror.changeEnd = function(change) { | ||||
if (!change.text) return change.to; | ||||
return Pos(change.from.line + change.text.length - 1, | ||||
lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0)); | ||||
}; | ||||
// Adjust a position to refer to the post-change position of the | ||||
// same text, or the end of the change if the change covers it. | ||||
function adjustForChange(pos, change) { | ||||
if (cmp(pos, change.from) < 0) return pos; | ||||
if (cmp(pos, change.to) <= 0) return changeEnd(change); | ||||
var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; | ||||
if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch; | ||||
return Pos(line, ch); | ||||
} | ||||
function computeSelAfterChange(doc, change) { | ||||
var out = []; | ||||
for (var i = 0; i < doc.sel.ranges.length; i++) { | ||||
var range = doc.sel.ranges[i]; | ||||
out.push(new Range(adjustForChange(range.anchor, change), | ||||
adjustForChange(range.head, change))); | ||||
} | ||||
return normalizeSelection(out, doc.sel.primIndex); | ||||
} | ||||
function offsetPos(pos, old, nw) { | ||||
if (pos.line == old.line) | ||||
return Pos(nw.line, pos.ch - old.ch + nw.ch); | ||||
else | ||||
return Pos(nw.line + (pos.line - old.line), pos.ch); | ||||
} | ||||
// Used by replaceSelections to allow moving the selection to the | ||||
// start or around the replaced test. Hint may be "start" or "around". | ||||
function computeReplacedSel(doc, changes, hint) { | ||||
var out = []; | ||||
var oldPrev = Pos(doc.first, 0), newPrev = oldPrev; | ||||
for (var i = 0; i < changes.length; i++) { | ||||
var change = changes[i]; | ||||
var from = offsetPos(change.from, oldPrev, newPrev); | ||||
var to = offsetPos(changeEnd(change), oldPrev, newPrev); | ||||
oldPrev = change.to; | ||||
newPrev = to; | ||||
if (hint == "around") { | ||||
var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0; | ||||
out[i] = new Range(inv ? to : from, inv ? from : to); | ||||
} else { | ||||
out[i] = new Range(from, from); | ||||
} | ||||
} | ||||
return new Selection(out, doc.sel.primIndex); | ||||
} | ||||
// Allow "beforeChange" event handlers to influence a change | ||||
function filterChange(doc, change, update) { | ||||
var obj = { | ||||
canceled: false, | ||||
from: change.from, | ||||
to: change.to, | ||||
text: change.text, | ||||
origin: change.origin, | ||||
cancel: function() { this.canceled = true; } | ||||
}; | ||||
if (update) obj.update = function(from, to, text, origin) { | ||||
if (from) this.from = clipPos(doc, from); | ||||
if (to) this.to = clipPos(doc, to); | ||||
if (text) this.text = text; | ||||
if (origin !== undefined) this.origin = origin; | ||||
}; | ||||
signal(doc, "beforeChange", doc, obj); | ||||
if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj); | ||||
if (obj.canceled) return null; | ||||
return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin}; | ||||
} | ||||
// Apply a change to a document, and add it to the document's | ||||
// history, and propagating it to all linked documents. | ||||
function makeChange(doc, change, ignoreReadOnly) { | ||||
if (doc.cm) { | ||||
if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly); | ||||
if (doc.cm.state.suppressEdits) return; | ||||
} | ||||
if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { | ||||
change = filterChange(doc, change, true); | ||||
if (!change) return; | ||||
} | ||||
// Possibly split or suppress the update based on the presence | ||||
// of read-only spans in its range. | ||||
var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to); | ||||
if (split) { | ||||
for (var i = split.length - 1; i >= 0; --i) | ||||
makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text}); | ||||
} else { | ||||
makeChangeInner(doc, change); | ||||
} | ||||
} | ||||
function makeChangeInner(doc, change) { | ||||
if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return; | ||||
var selAfter = computeSelAfterChange(doc, change); | ||||
addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN); | ||||
makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change)); | ||||
var rebased = []; | ||||
linkedDocs(doc, function(doc, sharedHist) { | ||||
if (!sharedHist && indexOf(rebased, doc.history) == -1) { | ||||
rebaseHist(doc.history, change); | ||||
rebased.push(doc.history); | ||||
} | ||||
makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change)); | ||||
}); | ||||
} | ||||
// Revert a change stored in a document's history. | ||||
function makeChangeFromHistory(doc, type, allowSelectionOnly) { | ||||
if (doc.cm && doc.cm.state.suppressEdits) return; | ||||
var hist = doc.history, event, selAfter = doc.sel; | ||||
var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done; | ||||
// Verify that there is a useable event (so that ctrl-z won't | ||||
// needlessly clear selection events) | ||||
for (var i = 0; i < source.length; i++) { | ||||
event = source[i]; | ||||
if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges) | ||||
break; | ||||
} | ||||
if (i == source.length) return; | ||||
hist.lastOrigin = hist.lastSelOrigin = null; | ||||
for (;;) { | ||||
event = source.pop(); | ||||
if (event.ranges) { | ||||
pushSelectionToHistory(event, dest); | ||||
if (allowSelectionOnly && !event.equals(doc.sel)) { | ||||
setSelection(doc, event, {clearRedo: false}); | ||||
return; | ||||
} | ||||
selAfter = event; | ||||
} | ||||
else break; | ||||
} | ||||
// Build up a reverse change object to add to the opposite history | ||||
// stack (redo when undoing, and vice versa). | ||||
var antiChanges = []; | ||||
pushSelectionToHistory(selAfter, dest); | ||||
dest.push({changes: antiChanges, generation: hist.generation}); | ||||
hist.generation = event.generation || ++hist.maxGeneration; | ||||
var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); | ||||
for (var i = event.changes.length - 1; i >= 0; --i) { | ||||
var change = event.changes[i]; | ||||
change.origin = type; | ||||
if (filter && !filterChange(doc, change, false)) { | ||||
source.length = 0; | ||||
return; | ||||
} | ||||
antiChanges.push(historyChangeFromChange(doc, change)); | ||||
var after = i ? computeSelAfterChange(doc, change) : lst(source); | ||||
makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change)); | ||||
if (!i && doc.cm) doc.cm.scrollIntoView({from: change.from, to: changeEnd(change)}); | ||||
var rebased = []; | ||||
// Propagate to the linked documents | ||||
linkedDocs(doc, function(doc, sharedHist) { | ||||
if (!sharedHist && indexOf(rebased, doc.history) == -1) { | ||||
rebaseHist(doc.history, change); | ||||
rebased.push(doc.history); | ||||
} | ||||
makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change)); | ||||
}); | ||||
} | ||||
} | ||||
// Sub-views need their line numbers shifted when text is added | ||||
// above or below them in the parent document. | ||||
function shiftDoc(doc, distance) { | ||||
if (distance == 0) return; | ||||
doc.first += distance; | ||||
doc.sel = new Selection(map(doc.sel.ranges, function(range) { | ||||
return new Range(Pos(range.anchor.line + distance, range.anchor.ch), | ||||
Pos(range.head.line + distance, range.head.ch)); | ||||
}), doc.sel.primIndex); | ||||
if (doc.cm) { | ||||
regChange(doc.cm, doc.first, doc.first - distance, distance); | ||||
for (var d = doc.cm.display, l = d.viewFrom; l < d.viewTo; l++) | ||||
regLineChange(doc.cm, l, "gutter"); | ||||
} | ||||
} | ||||
// More lower-level change function, handling only a single document | ||||
// (not linked ones). | ||||
function makeChangeSingleDoc(doc, change, selAfter, spans) { | ||||
if (doc.cm && !doc.cm.curOp) | ||||
return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans); | ||||
if (change.to.line < doc.first) { | ||||
shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line)); | ||||
return; | ||||
} | ||||
if (change.from.line > doc.lastLine()) return; | ||||
// Clip the change to the size of this doc | ||||
if (change.from.line < doc.first) { | ||||
var shift = change.text.length - 1 - (doc.first - change.from.line); | ||||
shiftDoc(doc, shift); | ||||
change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch), | ||||
text: [lst(change.text)], origin: change.origin}; | ||||
} | ||||
var last = doc.lastLine(); | ||||
if (change.to.line > last) { | ||||
change = {from: change.from, to: Pos(last, getLine(doc, last).text.length), | ||||
text: [change.text[0]], origin: change.origin}; | ||||
} | ||||
change.removed = getBetween(doc, change.from, change.to); | ||||
if (!selAfter) selAfter = computeSelAfterChange(doc, change); | ||||
if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans); | ||||
else updateDoc(doc, change, spans); | ||||
setSelectionNoUndo(doc, selAfter, sel_dontScroll); | ||||
} | ||||
// Handle the interaction of a change to a document with the editor | ||||
// that this document is part of. | ||||
function makeChangeSingleDocInEditor(cm, change, spans) { | ||||
var doc = cm.doc, display = cm.display, from = change.from, to = change.to; | ||||
var recomputeMaxLength = false, checkWidthStart = from.line; | ||||
if (!cm.options.lineWrapping) { | ||||
checkWidthStart = lineNo(visualLine(getLine(doc, from.line))); | ||||
doc.iter(checkWidthStart, to.line + 1, function(line) { | ||||
if (line == display.maxLine) { | ||||
recomputeMaxLength = true; | ||||
return true; | ||||
} | ||||
}); | ||||
} | ||||
if (doc.sel.contains(change.from, change.to) > -1) | ||||
signalCursorActivity(cm); | ||||
updateDoc(doc, change, spans, estimateHeight(cm)); | ||||
if (!cm.options.lineWrapping) { | ||||
doc.iter(checkWidthStart, from.line + change.text.length, function(line) { | ||||
var len = lineLength(line); | ||||
if (len > display.maxLineLength) { | ||||
display.maxLine = line; | ||||
display.maxLineLength = len; | ||||
display.maxLineChanged = true; | ||||
recomputeMaxLength = false; | ||||
} | ||||
}); | ||||
if (recomputeMaxLength) cm.curOp.updateMaxLine = true; | ||||
} | ||||
// Adjust frontier, schedule worker | ||||
doc.frontier = Math.min(doc.frontier, from.line); | ||||
startWorker(cm, 400); | ||||
var lendiff = change.text.length - (to.line - from.line) - 1; | ||||
// Remember that these lines changed, for updating the display | ||||
if (change.full) | ||||
regChange(cm); | ||||
else if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change)) | ||||
regLineChange(cm, from.line, "text"); | ||||
else | ||||
regChange(cm, from.line, to.line + 1, lendiff); | ||||
var changesHandler = hasHandler(cm, "changes"), changeHandler = hasHandler(cm, "change"); | ||||
if (changeHandler || changesHandler) { | ||||
var obj = { | ||||
from: from, to: to, | ||||
text: change.text, | ||||
removed: change.removed, | ||||
origin: change.origin | ||||
}; | ||||
if (changeHandler) signalLater(cm, "change", cm, obj); | ||||
if (changesHandler) (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push(obj); | ||||
} | ||||
cm.display.selForContextMenu = null; | ||||
} | ||||
function replaceRange(doc, code, from, to, origin) { | ||||
if (!to) to = from; | ||||
if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; } | ||||
if (typeof code == "string") code = splitLines(code); | ||||
makeChange(doc, {from: from, to: to, text: code, origin: origin}); | ||||
} | ||||
// SCROLLING THINGS INTO VIEW | ||||
// If an editor sits on the top or bottom of the window, partially | ||||
// scrolled out of view, this ensures that the cursor is visible. | ||||
function maybeScrollWindow(cm, coords) { | ||||
if (signalDOMEvent(cm, "scrollCursorIntoView")) return; | ||||
var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null; | ||||
if (coords.top + box.top < 0) doScroll = true; | ||||
else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; | ||||
if (doScroll != null && !phantom) { | ||||
var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " + | ||||
(coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " + | ||||
(coords.bottom - coords.top + scrollGap(cm) + display.barHeight) + "px; left: " + | ||||
coords.left + "px; width: 2px;"); | ||||
cm.display.lineSpace.appendChild(scrollNode); | ||||
scrollNode.scrollIntoView(doScroll); | ||||
cm.display.lineSpace.removeChild(scrollNode); | ||||
} | ||||
} | ||||
// Scroll a given position into view (immediately), verifying that | ||||
// it actually became visible (as line heights are accurately | ||||
// measured, the position of something may 'drift' during drawing). | ||||
function scrollPosIntoView(cm, pos, end, margin) { | ||||
if (margin == null) margin = 0; | ||||
for (var limit = 0; limit < 5; limit++) { | ||||
var changed = false, coords = cursorCoords(cm, pos); | ||||
var endCoords = !end || end == pos ? coords : cursorCoords(cm, end); | ||||
var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left), | ||||
Math.min(coords.top, endCoords.top) - margin, | ||||
Math.max(coords.left, endCoords.left), | ||||
Math.max(coords.bottom, endCoords.bottom) + margin); | ||||
var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft; | ||||
if (scrollPos.scrollTop != null) { | ||||
setScrollTop(cm, scrollPos.scrollTop); | ||||
if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true; | ||||
} | ||||
if (scrollPos.scrollLeft != null) { | ||||
setScrollLeft(cm, scrollPos.scrollLeft); | ||||
if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; | ||||
} | ||||
if (!changed) break; | ||||
} | ||||
return coords; | ||||
} | ||||
// Scroll a given set of coordinates into view (immediately). | ||||
function scrollIntoView(cm, x1, y1, x2, y2) { | ||||
var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2); | ||||
if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop); | ||||
if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft); | ||||
} | ||||
// Calculate a new scroll position needed to scroll the given | ||||
// rectangle into view. Returns an object with scrollTop and | ||||
// scrollLeft properties. When these are undefined, the | ||||
// vertical/horizontal position does not need to be adjusted. | ||||
function calculateScrollPos(cm, x1, y1, x2, y2) { | ||||
var display = cm.display, snapMargin = textHeight(cm.display); | ||||
if (y1 < 0) y1 = 0; | ||||
var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop; | ||||
var screen = displayHeight(cm), result = {}; | ||||
if (y2 - y1 > screen) y2 = y1 + screen; | ||||
var docBottom = cm.doc.height + paddingVert(display); | ||||
var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; | ||||
if (y1 < screentop) { | ||||
result.scrollTop = atTop ? 0 : y1; | ||||
} else if (y2 > screentop + screen) { | ||||
var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen); | ||||
if (newTop != screentop) result.scrollTop = newTop; | ||||
} | ||||
var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft; | ||||
var screenw = displayWidth(cm) - (cm.options.fixedGutter ? display.gutters.offsetWidth : 0); | ||||
var tooWide = x2 - x1 > screenw; | ||||
if (tooWide) x2 = x1 + screenw; | ||||
if (x1 < 10) | ||||
result.scrollLeft = 0; | ||||
else if (x1 < screenleft) | ||||
result.scrollLeft = Math.max(0, x1 - (tooWide ? 0 : 10)); | ||||
else if (x2 > screenw + screenleft - 3) | ||||
result.scrollLeft = x2 + (tooWide ? 0 : 10) - screenw; | ||||
return result; | ||||
} | ||||
// Store a relative adjustment to the scroll position in the current | ||||
// operation (to be applied when the operation finishes). | ||||
function addToScrollPos(cm, left, top) { | ||||
if (left != null || top != null) resolveScrollToPos(cm); | ||||
if (left != null) | ||||
cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left; | ||||
if (top != null) | ||||
cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top; | ||||
} | ||||
// Make sure that at the end of the operation the current cursor is | ||||
// shown. | ||||
function ensureCursorVisible(cm) { | ||||
resolveScrollToPos(cm); | ||||
var cur = cm.getCursor(), from = cur, to = cur; | ||||
if (!cm.options.lineWrapping) { | ||||
from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur; | ||||
to = Pos(cur.line, cur.ch + 1); | ||||
} | ||||
cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true}; | ||||
} | ||||
// When an operation has its scrollToPos property set, and another | ||||
// scroll action is applied before the end of the operation, this | ||||
// 'simulates' scrolling that position into view in a cheap way, so | ||||
// that the effect of intermediate scroll commands is not ignored. | ||||
function resolveScrollToPos(cm) { | ||||
var range = cm.curOp.scrollToPos; | ||||
if (range) { | ||||
cm.curOp.scrollToPos = null; | ||||
var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to); | ||||
var sPos = calculateScrollPos(cm, Math.min(from.left, to.left), | ||||
Math.min(from.top, to.top) - range.margin, | ||||
Math.max(from.right, to.right), | ||||
Math.max(from.bottom, to.bottom) + range.margin); | ||||
cm.scrollTo(sPos.scrollLeft, sPos.scrollTop); | ||||
} | ||||
} | ||||
// API UTILITIES | ||||
// Indent the given line. The how parameter can be "smart", | ||||
// "add"/null, "subtract", or "prev". When aggressive is false | ||||
// (typically set to true for forced single-line indents), empty | ||||
// lines are not indented, and places where the mode returns Pass | ||||
// are left alone. | ||||
function indentLine(cm, n, how, aggressive) { | ||||
var doc = cm.doc, state; | ||||
if (how == null) how = "add"; | ||||
if (how == "smart") { | ||||
// Fall back to "prev" when the mode doesn't have an indentation | ||||
// method. | ||||
if (!doc.mode.indent) how = "prev"; | ||||
else state = getStateBefore(cm, n); | ||||
} | ||||
var tabSize = cm.options.tabSize; | ||||
var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); | ||||
if (line.stateAfter) line.stateAfter = null; | ||||
var curSpaceString = line.text.match(/^\s*/)[0], indentation; | ||||
if (!aggressive && !/\S/.test(line.text)) { | ||||
indentation = 0; | ||||
how = "not"; | ||||
} else if (how == "smart") { | ||||
indentation = doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); | ||||
if (indentation == Pass || indentation > 150) { | ||||
if (!aggressive) return; | ||||
how = "prev"; | ||||
} | ||||
} | ||||
if (how == "prev") { | ||||
if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize); | ||||
else indentation = 0; | ||||
} else if (how == "add") { | ||||
indentation = curSpace + cm.options.indentUnit; | ||||
} else if (how == "subtract") { | ||||
indentation = curSpace - cm.options.indentUnit; | ||||
} else if (typeof how == "number") { | ||||
indentation = curSpace + how; | ||||
} | ||||
indentation = Math.max(0, indentation); | ||||
var indentString = "", pos = 0; | ||||
if (cm.options.indentWithTabs) | ||||
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";} | ||||
if (pos < indentation) indentString += spaceStr(indentation - pos); | ||||
if (indentString != curSpaceString) { | ||||
replaceRange(doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); | ||||
line.stateAfter = null; | ||||
return true; | ||||
} else { | ||||
// Ensure that, if the cursor was in the whitespace at the start | ||||
// of the line, it is moved to the end of that space. | ||||
for (var i = 0; i < doc.sel.ranges.length; i++) { | ||||
var range = doc.sel.ranges[i]; | ||||
if (range.head.line == n && range.head.ch < curSpaceString.length) { | ||||
var pos = Pos(n, curSpaceString.length); | ||||
replaceOneSelection(doc, i, new Range(pos, pos)); | ||||
break; | ||||
} | ||||
} | ||||
} | ||||
} | ||||
// Utility for applying a change to a line by handle or number, | ||||
// returning the number and optionally registering the line as | ||||
// changed. | ||||
function changeLine(doc, handle, changeType, op) { | ||||
var no = handle, line = handle; | ||||
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); | ||||
else no = lineNo(handle); | ||||
if (no == null) return null; | ||||
if (op(line, no) && doc.cm) regLineChange(doc.cm, no, changeType); | ||||
return line; | ||||
} | ||||
// Helper for deleting text near the selection(s), used to implement | ||||
// backspace, delete, and similar functionality. | ||||
function deleteNearSelection(cm, compute) { | ||||
var ranges = cm.doc.sel.ranges, kill = []; | ||||
// Build up a set of ranges to kill first, merging overlapping | ||||
// ranges. | ||||
for (var i = 0; i < ranges.length; i++) { | ||||
var toKill = compute(ranges[i]); | ||||
while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) { | ||||
var replaced = kill.pop(); | ||||
if (cmp(replaced.from, toKill.from) < 0) { | ||||
toKill.from = replaced.from; | ||||
break; | ||||
} | ||||
} | ||||
kill.push(toKill); | ||||
} | ||||
// Next, remove those actual ranges. | ||||
runInOp(cm, function() { | ||||
for (var i = kill.length - 1; i >= 0; i--) | ||||
replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete"); | ||||
ensureCursorVisible(cm); | ||||
}); | ||||
} | ||||
// Used for horizontal relative motion. Dir is -1 or 1 (left or | ||||
// right), unit can be "char", "column" (like char, but doesn't | ||||
// cross line boundaries), "word" (across next word), or "group" (to | ||||
// the start of next group of word or non-word-non-whitespace | ||||
// chars). The visually param controls whether, in right-to-left | ||||
// text, direction 1 means to move towards the next index in the | ||||
// string, or towards the character to the right of the current | ||||
// position. The resulting position will have a hitSide=true | ||||
// property if it reached the end of the document. | ||||
function findPosH(doc, pos, dir, unit, visually) { | ||||
var line = pos.line, ch = pos.ch, origDir = dir; | ||||
var lineObj = getLine(doc, line); | ||||
var possible = true; | ||||
function findNextLine() { | ||||
var l = line + dir; | ||||
if (l < doc.first || l >= doc.first + doc.size) return (possible = false); | ||||
line = l; | ||||
return lineObj = getLine(doc, l); | ||||
} | ||||
function moveOnce(boundToLine) { | ||||
var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true); | ||||
if (next == null) { | ||||
if (!boundToLine && findNextLine()) { | ||||
if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj); | ||||
else ch = dir < 0 ? lineObj.text.length : 0; | ||||
} else return (possible = false); | ||||
} else ch = next; | ||||
return true; | ||||
} | ||||
if (unit == "char") moveOnce(); | ||||
else if (unit == "column") moveOnce(true); | ||||
else if (unit == "word" || unit == "group") { | ||||
var sawType = null, group = unit == "group"; | ||||
var helper = doc.cm && doc.cm.getHelper(pos, "wordChars"); | ||||
for (var first = true;; first = false) { | ||||
if (dir < 0 && !moveOnce(!first)) break; | ||||
var cur = lineObj.text.charAt(ch) || "\n"; | ||||
var type = isWordChar(cur, helper) ? "w" | ||||
: group && cur == "\n" ? "n" | ||||
: !group || /\s/.test(cur) ? null | ||||
: "p"; | ||||
if (group && !first && !type) type = "s"; | ||||
if (sawType && sawType != type) { | ||||
if (dir < 0) {dir = 1; moveOnce();} | ||||
break; | ||||
} | ||||
if (type) sawType = type; | ||||
if (dir > 0 && !moveOnce(!first)) break; | ||||
} | ||||
} | ||||
var result = skipAtomic(doc, Pos(line, ch), origDir, true); | ||||
if (!possible) result.hitSide = true; | ||||
return result; | ||||
} | ||||
// For relative vertical movement. Dir may be -1 or 1. Unit can be | ||||
// "page" or "line". The resulting position will have a hitSide=true | ||||
// property if it reached the end of the document. | ||||
function findPosV(cm, pos, dir, unit) { | ||||
var doc = cm.doc, x = pos.left, y; | ||||
if (unit == "page") { | ||||
var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight); | ||||
y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display)); | ||||
} else if (unit == "line") { | ||||
y = dir > 0 ? pos.bottom + 3 : pos.top - 3; | ||||
} | ||||
for (;;) { | ||||
var target = coordsChar(cm, x, y); | ||||
if (!target.outside) break; | ||||
if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; } | ||||
y += dir * 5; | ||||
} | ||||
return target; | ||||
} | ||||
// EDITOR METHODS | ||||
// The publicly visible API. Note that methodOp(f) means | ||||
// 'wrap f in an operation, performed on its `this` parameter'. | ||||
// This is not the complete set of editor methods. Most of the | ||||
// methods defined on the Doc type are also injected into | ||||
// CodeMirror.prototype, for backwards compatibility and | ||||
// convenience. | ||||
CodeMirror.prototype = { | ||||
constructor: CodeMirror, | ||||
focus: function(){window.focus(); this.display.input.focus();}, | ||||
setOption: function(option, value) { | ||||
var options = this.options, old = options[option]; | ||||
if (options[option] == value && option != "mode") return; | ||||
options[option] = value; | ||||
if (optionHandlers.hasOwnProperty(option)) | ||||
operation(this, optionHandlers[option])(this, value, old); | ||||
}, | ||||
getOption: function(option) {return this.options[option];}, | ||||
getDoc: function() {return this.doc;}, | ||||
addKeyMap: function(map, bottom) { | ||||
this.state.keyMaps[bottom ? "push" : "unshift"](getKeyMap(map)); | ||||
}, | ||||
removeKeyMap: function(map) { | ||||
var maps = this.state.keyMaps; | ||||
for (var i = 0; i < maps.length; ++i) | ||||
if (maps[i] == map || maps[i].name == map) { | ||||
maps.splice(i, 1); | ||||
return true; | ||||
} | ||||
}, | ||||
addOverlay: methodOp(function(spec, options) { | ||||
var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec); | ||||
if (mode.startState) throw new Error("Overlays may not be stateful."); | ||||
this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque}); | ||||
this.state.modeGen++; | ||||
regChange(this); | ||||
}), | ||||
removeOverlay: methodOp(function(spec) { | ||||
var overlays = this.state.overlays; | ||||
for (var i = 0; i < overlays.length; ++i) { | ||||
var cur = overlays[i].modeSpec; | ||||
if (cur == spec || typeof spec == "string" && cur.name == spec) { | ||||
overlays.splice(i, 1); | ||||
this.state.modeGen++; | ||||
regChange(this); | ||||
return; | ||||
} | ||||
} | ||||
}), | ||||
indentLine: methodOp(function(n, dir, aggressive) { | ||||
if (typeof dir != "string" && typeof dir != "number") { | ||||
if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; | ||||
else dir = dir ? "add" : "subtract"; | ||||
} | ||||
if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); | ||||
}), | ||||
indentSelection: methodOp(function(how) { | ||||
var ranges = this.doc.sel.ranges, end = -1; | ||||
for (var i = 0; i < ranges.length; i++) { | ||||
var range = ranges[i]; | ||||
if (!range.empty()) { | ||||
var from = range.from(), to = range.to(); | ||||
var start = Math.max(end, from.line); | ||||
end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1; | ||||
for (var j = start; j < end; ++j) | ||||
indentLine(this, j, how); | ||||
var newRanges = this.doc.sel.ranges; | ||||
if (from.ch == 0 && ranges.length == newRanges.length && newRanges[i].from().ch > 0) | ||||
replaceOneSelection(this.doc, i, new Range(from, newRanges[i].to()), sel_dontScroll); | ||||
} else if (range.head.line > end) { | ||||
indentLine(this, range.head.line, how, true); | ||||
end = range.head.line; | ||||
if (i == this.doc.sel.primIndex) ensureCursorVisible(this); | ||||
} | ||||
} | ||||
}), | ||||
// Fetch the parser token for a given character. Useful for hacks | ||||
// that want to inspect the mode state (say, for completion). | ||||
getTokenAt: function(pos, precise) { | ||||
return takeToken(this, pos, precise); | ||||
}, | ||||
getLineTokens: function(line, precise) { | ||||
return takeToken(this, Pos(line), precise, true); | ||||
}, | ||||
getTokenTypeAt: function(pos) { | ||||
pos = clipPos(this.doc, pos); | ||||
var styles = getLineStyles(this, getLine(this.doc, pos.line)); | ||||
var before = 0, after = (styles.length - 1) / 2, ch = pos.ch; | ||||
var type; | ||||
if (ch == 0) type = styles[2]; | ||||
else for (;;) { | ||||
var mid = (before + after) >> 1; | ||||
if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid; | ||||
else if (styles[mid * 2 + 1] < ch) before = mid + 1; | ||||
else { type = styles[mid * 2 + 2]; break; } | ||||
} | ||||
var cut = type ? type.indexOf("cm-overlay ") : -1; | ||||
return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1); | ||||
}, | ||||
getModeAt: function(pos) { | ||||
var mode = this.doc.mode; | ||||
if (!mode.innerMode) return mode; | ||||
return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode; | ||||
}, | ||||
getHelper: function(pos, type) { | ||||
return this.getHelpers(pos, type)[0]; | ||||
}, | ||||
getHelpers: function(pos, type) { | ||||
var found = []; | ||||
if (!helpers.hasOwnProperty(type)) return found; | ||||
var help = helpers[type], mode = this.getModeAt(pos); | ||||
if (typeof mode[type] == "string") { | ||||
if (help[mode[type]]) found.push(help[mode[type]]); | ||||
} else if (mode[type]) { | ||||
for (var i = 0; i < mode[type].length; i++) { | ||||
var val = help[mode[type][i]]; | ||||
if (val) found.push(val); | ||||
} | ||||
} else if (mode.helperType && help[mode.helperType]) { | ||||
found.push(help[mode.helperType]); | ||||
} else if (help[mode.name]) { | ||||
found.push(help[mode.name]); | ||||
} | ||||
for (var i = 0; i < help._global.length; i++) { | ||||
var cur = help._global[i]; | ||||
if (cur.pred(mode, this) && indexOf(found, cur.val) == -1) | ||||
found.push(cur.val); | ||||
} | ||||
return found; | ||||
}, | ||||
getStateAfter: function(line, precise) { | ||||
var doc = this.doc; | ||||
line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); | ||||
return getStateBefore(this, line + 1, precise); | ||||
}, | ||||
cursorCoords: function(start, mode) { | ||||
var pos, range = this.doc.sel.primary(); | ||||
if (start == null) pos = range.head; | ||||
else if (typeof start == "object") pos = clipPos(this.doc, start); | ||||
else pos = start ? range.from() : range.to(); | ||||
return cursorCoords(this, pos, mode || "page"); | ||||
}, | ||||
charCoords: function(pos, mode) { | ||||
return charCoords(this, clipPos(this.doc, pos), mode || "page"); | ||||
}, | ||||
coordsChar: function(coords, mode) { | ||||
coords = fromCoordSystem(this, coords, mode || "page"); | ||||
return coordsChar(this, coords.left, coords.top); | ||||
}, | ||||
lineAtHeight: function(height, mode) { | ||||
height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top; | ||||
return lineAtHeight(this.doc, height + this.display.viewOffset); | ||||
}, | ||||
heightAtLine: function(line, mode) { | ||||
var end = false, lineObj; | ||||
if (typeof line == "number") { | ||||
var last = this.doc.first + this.doc.size - 1; | ||||
if (line < this.doc.first) line = this.doc.first; | ||||
else if (line > last) { line = last; end = true; } | ||||
lineObj = getLine(this.doc, line); | ||||
} else { | ||||
lineObj = line; | ||||
} | ||||
return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top + | ||||
(end ? this.doc.height - heightAtLine(lineObj) : 0); | ||||
}, | ||||
defaultTextHeight: function() { return textHeight(this.display); }, | ||||
defaultCharWidth: function() { return charWidth(this.display); }, | ||||
setGutterMarker: methodOp(function(line, gutterID, value) { | ||||
return changeLine(this.doc, line, "gutter", function(line) { | ||||
var markers = line.gutterMarkers || (line.gutterMarkers = {}); | ||||
markers[gutterID] = value; | ||||
if (!value && isEmpty(markers)) line.gutterMarkers = null; | ||||
return true; | ||||
}); | ||||
}), | ||||
clearGutter: methodOp(function(gutterID) { | ||||
var cm = this, doc = cm.doc, i = doc.first; | ||||
doc.iter(function(line) { | ||||
if (line.gutterMarkers && line.gutterMarkers[gutterID]) { | ||||
line.gutterMarkers[gutterID] = null; | ||||
regLineChange(cm, i, "gutter"); | ||||
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; | ||||
} | ||||
++i; | ||||
}); | ||||
}), | ||||
lineInfo: function(line) { | ||||
if (typeof line == "number") { | ||||
if (!isLine(this.doc, line)) return null; | ||||
var n = line; | ||||
line = getLine(this.doc, line); | ||||
if (!line) return null; | ||||
} else { | ||||
var n = lineNo(line); | ||||
if (n == null) return null; | ||||
} | ||||
return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers, | ||||
textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass, | ||||
widgets: line.widgets}; | ||||
}, | ||||
getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};}, | ||||
addWidget: function(pos, node, scroll, vert, horiz) { | ||||
var display = this.display; | ||||
pos = cursorCoords(this, clipPos(this.doc, pos)); | ||||
var top = pos.bottom, left = pos.left; | ||||
node.style.position = "absolute"; | ||||
node.setAttribute("cm-ignore-events", "true"); | ||||
this.display.input.setUneditable(node); | ||||
display.sizer.appendChild(node); | ||||
if (vert == "over") { | ||||
top = pos.top; | ||||
} else if (vert == "above" || vert == "near") { | ||||
var vspace = Math.max(display.wrapper.clientHeight, this.doc.height), | ||||
hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth); | ||||
// Default to positioning above (if specified and possible); otherwise default to positioning below | ||||
if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight) | ||||
top = pos.top - node.offsetHeight; | ||||
else if (pos.bottom + node.offsetHeight <= vspace) | ||||
top = pos.bottom; | ||||
if (left + node.offsetWidth > hspace) | ||||
left = hspace - node.offsetWidth; | ||||
} | ||||
node.style.top = top + "px"; | ||||
node.style.left = node.style.right = ""; | ||||
if (horiz == "right") { | ||||
left = display.sizer.clientWidth - node.offsetWidth; | ||||
node.style.right = "0px"; | ||||
} else { | ||||
if (horiz == "left") left = 0; | ||||
else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2; | ||||
node.style.left = left + "px"; | ||||
} | ||||
if (scroll) | ||||
scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); | ||||
}, | ||||
triggerOnKeyDown: methodOp(onKeyDown), | ||||
triggerOnKeyPress: methodOp(onKeyPress), | ||||
triggerOnKeyUp: onKeyUp, | ||||
execCommand: function(cmd) { | ||||
if (commands.hasOwnProperty(cmd)) | ||||
return commands[cmd](this); | ||||
}, | ||||
triggerElectric: methodOp(function(text) { triggerElectric(this, text); }), | ||||
findPosH: function(from, amount, unit, visually) { | ||||
var dir = 1; | ||||
if (amount < 0) { dir = -1; amount = -amount; } | ||||
for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { | ||||
cur = findPosH(this.doc, cur, dir, unit, visually); | ||||
if (cur.hitSide) break; | ||||
} | ||||
return cur; | ||||
}, | ||||
moveH: methodOp(function(dir, unit) { | ||||
var cm = this; | ||||
cm.extendSelectionsBy(function(range) { | ||||
if (cm.display.shift || cm.doc.extend || range.empty()) | ||||
return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually); | ||||
else | ||||
return dir < 0 ? range.from() : range.to(); | ||||
}, sel_move); | ||||
}), | ||||
deleteH: methodOp(function(dir, unit) { | ||||
var sel = this.doc.sel, doc = this.doc; | ||||
if (sel.somethingSelected()) | ||||
doc.replaceSelection("", null, "+delete"); | ||||
else | ||||
deleteNearSelection(this, function(range) { | ||||
var other = findPosH(doc, range.head, dir, unit, false); | ||||
return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other}; | ||||
}); | ||||
}), | ||||
findPosV: function(from, amount, unit, goalColumn) { | ||||
var dir = 1, x = goalColumn; | ||||
if (amount < 0) { dir = -1; amount = -amount; } | ||||
for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) { | ||||
var coords = cursorCoords(this, cur, "div"); | ||||
if (x == null) x = coords.left; | ||||
else coords.left = x; | ||||
cur = findPosV(this, coords, dir, unit); | ||||
if (cur.hitSide) break; | ||||
} | ||||
return cur; | ||||
}, | ||||
moveV: methodOp(function(dir, unit) { | ||||
var cm = this, doc = this.doc, goals = []; | ||||
var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected(); | ||||
doc.extendSelectionsBy(function(range) { | ||||
if (collapse) | ||||
return dir < 0 ? range.from() : range.to(); | ||||
var headPos = cursorCoords(cm, range.head, "div"); | ||||
if (range.goalColumn != null) headPos.left = range.goalColumn; | ||||
goals.push(headPos.left); | ||||
var pos = findPosV(cm, headPos, dir, unit); | ||||
if (unit == "page" && range == doc.sel.primary()) | ||||
addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top); | ||||
return pos; | ||||
}, sel_move); | ||||
if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++) | ||||
doc.sel.ranges[i].goalColumn = goals[i]; | ||||
}), | ||||
// Find the word at the given position (as returned by coordsChar). | ||||
findWordAt: function(pos) { | ||||
var doc = this.doc, line = getLine(doc, pos.line).text; | ||||
var start = pos.ch, end = pos.ch; | ||||
if (line) { | ||||
var helper = this.getHelper(pos, "wordChars"); | ||||
if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; | ||||
var startChar = line.charAt(start); | ||||
var check = isWordChar(startChar, helper) | ||||
? function(ch) { return isWordChar(ch, helper); } | ||||
: /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} | ||||
: function(ch) {return !/\s/.test(ch) && !isWordChar(ch);}; | ||||
while (start > 0 && check(line.charAt(start - 1))) --start; | ||||
while (end < line.length && check(line.charAt(end))) ++end; | ||||
} | ||||
return new Range(Pos(pos.line, start), Pos(pos.line, end)); | ||||
}, | ||||
toggleOverwrite: function(value) { | ||||
if (value != null && value == this.state.overwrite) return; | ||||
if (this.state.overwrite = !this.state.overwrite) | ||||
addClass(this.display.cursorDiv, "CodeMirror-overwrite"); | ||||
else | ||||
rmClass(this.display.cursorDiv, "CodeMirror-overwrite"); | ||||
signal(this, "overwriteToggle", this, this.state.overwrite); | ||||
}, | ||||
hasFocus: function() { return this.display.input.getField() == activeElt(); }, | ||||
scrollTo: methodOp(function(x, y) { | ||||
if (x != null || y != null) resolveScrollToPos(this); | ||||
if (x != null) this.curOp.scrollLeft = x; | ||||
if (y != null) this.curOp.scrollTop = y; | ||||
}), | ||||
getScrollInfo: function() { | ||||
var scroller = this.display.scroller; | ||||
return {left: scroller.scrollLeft, top: scroller.scrollTop, | ||||
height: scroller.scrollHeight - scrollGap(this) - this.display.barHeight, | ||||
width: scroller.scrollWidth - scrollGap(this) - this.display.barWidth, | ||||
clientHeight: displayHeight(this), clientWidth: displayWidth(this)}; | ||||
}, | ||||
scrollIntoView: methodOp(function(range, margin) { | ||||
if (range == null) { | ||||
range = {from: this.doc.sel.primary().head, to: null}; | ||||
if (margin == null) margin = this.options.cursorScrollMargin; | ||||
} else if (typeof range == "number") { | ||||
range = {from: Pos(range, 0), to: null}; | ||||
} else if (range.from == null) { | ||||
range = {from: range, to: null}; | ||||
} | ||||
if (!range.to) range.to = range.from; | ||||
range.margin = margin || 0; | ||||
if (range.from.line != null) { | ||||
resolveScrollToPos(this); | ||||
this.curOp.scrollToPos = range; | ||||
} else { | ||||
var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left), | ||||
Math.min(range.from.top, range.to.top) - range.margin, | ||||
Math.max(range.from.right, range.to.right), | ||||
Math.max(range.from.bottom, range.to.bottom) + range.margin); | ||||
this.scrollTo(sPos.scrollLeft, sPos.scrollTop); | ||||
} | ||||
}), | ||||
setSize: methodOp(function(width, height) { | ||||
var cm = this; | ||||
function interpret(val) { | ||||
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; | ||||
} | ||||
if (width != null) cm.display.wrapper.style.width = interpret(width); | ||||
if (height != null) cm.display.wrapper.style.height = interpret(height); | ||||
if (cm.options.lineWrapping) clearLineMeasurementCache(this); | ||||
var lineNo = cm.display.viewFrom; | ||||
cm.doc.iter(lineNo, cm.display.viewTo, function(line) { | ||||
if (line.widgets) for (var i = 0; i < line.widgets.length; i++) | ||||
if (line.widgets[i].noHScroll) { regLineChange(cm, lineNo, "widget"); break; } | ||||
++lineNo; | ||||
}); | ||||
cm.curOp.forceUpdate = true; | ||||
signal(cm, "refresh", this); | ||||
}), | ||||
operation: function(f){return runInOp(this, f);}, | ||||
refresh: methodOp(function() { | ||||
var oldHeight = this.display.cachedTextHeight; | ||||
regChange(this); | ||||
this.curOp.forceUpdate = true; | ||||
clearCaches(this); | ||||
this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop); | ||||
updateGutterSpace(this); | ||||
if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5) | ||||
estimateLineHeights(this); | ||||
signal(this, "refresh", this); | ||||
}), | ||||
swapDoc: methodOp(function(doc) { | ||||
var old = this.doc; | ||||
old.cm = null; | ||||
attachDoc(this, doc); | ||||
clearCaches(this); | ||||
this.display.input.reset(); | ||||
this.scrollTo(doc.scrollLeft, doc.scrollTop); | ||||
this.curOp.forceScroll = true; | ||||
signalLater(this, "swapDoc", this, old); | ||||
return old; | ||||
}), | ||||
getInputField: function(){return this.display.input.getField();}, | ||||
getWrapperElement: function(){return this.display.wrapper;}, | ||||
getScrollerElement: function(){return this.display.scroller;}, | ||||
getGutterElement: function(){return this.display.gutters;} | ||||
}; | ||||
eventMixin(CodeMirror); | ||||
// OPTION DEFAULTS | ||||
// The default configuration options. | ||||
var defaults = CodeMirror.defaults = {}; | ||||
// Functions to run when options are changed. | ||||
var optionHandlers = CodeMirror.optionHandlers = {}; | ||||
function option(name, deflt, handle, notOnInit) { | ||||
CodeMirror.defaults[name] = deflt; | ||||
if (handle) optionHandlers[name] = | ||||
notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle; | ||||
} | ||||
// Passed to option handlers when there is no old value. | ||||
var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}}; | ||||
// These two are, on init, called from the constructor because they | ||||
// have to be initialized before the editor can start at all. | ||||
option("value", "", function(cm, val) { | ||||
cm.setValue(val); | ||||
}, true); | ||||
option("mode", null, function(cm, val) { | ||||
cm.doc.modeOption = val; | ||||
loadMode(cm); | ||||
}, true); | ||||
option("indentUnit", 2, loadMode, true); | ||||
option("indentWithTabs", false); | ||||
option("smartIndent", true); | ||||
option("tabSize", 4, function(cm) { | ||||
resetModeState(cm); | ||||
clearCaches(cm); | ||||
regChange(cm); | ||||
}, true); | ||||
option("specialChars", /[\t\u0000-\u0019\u00ad\u200b-\u200f\u2028\u2029\ufeff]/g, function(cm, val, old) { | ||||
cm.state.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g"); | ||||
if (old != CodeMirror.Init) cm.refresh(); | ||||
}); | ||||
option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true); | ||||
option("electricChars", true); | ||||
option("inputStyle", mobile ? "contenteditable" : "textarea", function() { | ||||
throw new Error("inputStyle can not (yet) be changed in a running editor"); // FIXME | ||||
}, true); | ||||
option("rtlMoveVisually", !windows); | ||||
option("wholeLineUpdateBefore", true); | ||||
option("theme", "default", function(cm) { | ||||
themeChanged(cm); | ||||
guttersChanged(cm); | ||||
}, true); | ||||
option("keyMap", "default", function(cm, val, old) { | ||||
var next = getKeyMap(val); | ||||
var prev = old != CodeMirror.Init && getKeyMap(old); | ||||
if (prev && prev.detach) prev.detach(cm, next); | ||||
if (next.attach) next.attach(cm, prev || null); | ||||
}); | ||||
option("extraKeys", null); | ||||
option("lineWrapping", false, wrappingChanged, true); | ||||
option("gutters", [], function(cm) { | ||||
setGuttersForLineNumbers(cm.options); | ||||
guttersChanged(cm); | ||||
}, true); | ||||
option("fixedGutter", true, function(cm, val) { | ||||
cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0"; | ||||
cm.refresh(); | ||||
}, true); | ||||
option("coverGutterNextToScrollbar", false, function(cm) {updateScrollbars(cm);}, true); | ||||
option("scrollbarStyle", "native", function(cm) { | ||||
initScrollbars(cm); | ||||
updateScrollbars(cm); | ||||
cm.display.scrollbars.setScrollTop(cm.doc.scrollTop); | ||||
cm.display.scrollbars.setScrollLeft(cm.doc.scrollLeft); | ||||
}, true); | ||||
option("lineNumbers", false, function(cm) { | ||||
setGuttersForLineNumbers(cm.options); | ||||
guttersChanged(cm); | ||||
}, true); | ||||
option("firstLineNumber", 1, guttersChanged, true); | ||||
option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true); | ||||
option("showCursorWhenSelecting", false, updateSelection, true); | ||||
option("resetSelectionOnContextMenu", true); | ||||
option("lineWiseCopyCut", true); | ||||
option("readOnly", false, function(cm, val) { | ||||
if (val == "nocursor") { | ||||
onBlur(cm); | ||||
cm.display.input.blur(); | ||||
cm.display.disabled = true; | ||||
} else { | ||||
cm.display.disabled = false; | ||||
if (!val) cm.display.input.reset(); | ||||
} | ||||
}); | ||||
option("disableInput", false, function(cm, val) {if (!val) cm.display.input.reset();}, true); | ||||
option("dragDrop", true, dragDropChanged); | ||||
option("cursorBlinkRate", 530); | ||||
option("cursorScrollMargin", 0); | ||||
option("cursorHeight", 1, updateSelection, true); | ||||
option("singleCursorHeightPerLine", true, updateSelection, true); | ||||
option("workTime", 100); | ||||
option("workDelay", 100); | ||||
option("flattenSpans", true, resetModeState, true); | ||||
option("addModeClass", false, resetModeState, true); | ||||
option("pollInterval", 100); | ||||
option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;}); | ||||
option("historyEventDelay", 1250); | ||||
option("viewportMargin", 10, function(cm){cm.refresh();}, true); | ||||
option("maxHighlightLength", 10000, resetModeState, true); | ||||
option("moveInputWithCursor", true, function(cm, val) { | ||||
if (!val) cm.display.input.resetPosition(); | ||||
}); | ||||
option("tabindex", null, function(cm, val) { | ||||
cm.display.input.getField().tabIndex = val || ""; | ||||
}); | ||||
option("autofocus", null); | ||||
// MODE DEFINITION AND QUERYING | ||||
// Known modes, by name and by MIME | ||||
var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; | ||||
// Extra arguments are stored as the mode's dependencies, which is | ||||
// used by (legacy) mechanisms like loadmode.js to automatically | ||||
// load a mode. (Preferred mechanism is the require/define calls.) | ||||
CodeMirror.defineMode = function(name, mode) { | ||||
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; | ||||
if (arguments.length > 2) | ||||
mode.dependencies = Array.prototype.slice.call(arguments, 2); | ||||
modes[name] = mode; | ||||
}; | ||||
CodeMirror.defineMIME = function(mime, spec) { | ||||
mimeModes[mime] = spec; | ||||
}; | ||||
// Given a MIME type, a {name, ...options} config object, or a name | ||||
// string, return a mode config object. | ||||
CodeMirror.resolveMode = function(spec) { | ||||
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { | ||||
spec = mimeModes[spec]; | ||||
} else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { | ||||
var found = mimeModes[spec.name]; | ||||
if (typeof found == "string") found = {name: found}; | ||||
spec = createObj(found, spec); | ||||
spec.name = found.name; | ||||
} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { | ||||
return CodeMirror.resolveMode("application/xml"); | ||||
} | ||||
if (typeof spec == "string") return {name: spec}; | ||||
else return spec || {name: "null"}; | ||||
}; | ||||
// Given a mode spec (anything that resolveMode accepts), find and | ||||
// initialize an actual mode object. | ||||
CodeMirror.getMode = function(options, spec) { | ||||
var spec = CodeMirror.resolveMode(spec); | ||||
var mfactory = modes[spec.name]; | ||||
if (!mfactory) return CodeMirror.getMode(options, "text/plain"); | ||||
var modeObj = mfactory(options, spec); | ||||
if (modeExtensions.hasOwnProperty(spec.name)) { | ||||
var exts = modeExtensions[spec.name]; | ||||
for (var prop in exts) { | ||||
if (!exts.hasOwnProperty(prop)) continue; | ||||
if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; | ||||
modeObj[prop] = exts[prop]; | ||||
} | ||||
} | ||||
modeObj.name = spec.name; | ||||
if (spec.helperType) modeObj.helperType = spec.helperType; | ||||
if (spec.modeProps) for (var prop in spec.modeProps) | ||||
modeObj[prop] = spec.modeProps[prop]; | ||||
return modeObj; | ||||
}; | ||||
// Minimal default mode. | ||||
CodeMirror.defineMode("null", function() { | ||||
return {token: function(stream) {stream.skipToEnd();}}; | ||||
}); | ||||
CodeMirror.defineMIME("text/plain", "null"); | ||||
// This can be used to attach properties to mode objects from | ||||
// outside the actual mode definition. | ||||
var modeExtensions = CodeMirror.modeExtensions = {}; | ||||
CodeMirror.extendMode = function(mode, properties) { | ||||
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); | ||||
copyObj(properties, exts); | ||||
}; | ||||
// EXTENSIONS | ||||
CodeMirror.defineExtension = function(name, func) { | ||||
CodeMirror.prototype[name] = func; | ||||
}; | ||||
CodeMirror.defineDocExtension = function(name, func) { | ||||
Doc.prototype[name] = func; | ||||
}; | ||||
CodeMirror.defineOption = option; | ||||
var initHooks = []; | ||||
CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; | ||||
var helpers = CodeMirror.helpers = {}; | ||||
CodeMirror.registerHelper = function(type, name, value) { | ||||
if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []}; | ||||
helpers[type][name] = value; | ||||
}; | ||||
CodeMirror.registerGlobalHelper = function(type, name, predicate, value) { | ||||
CodeMirror.registerHelper(type, name, value); | ||||
helpers[type]._global.push({pred: predicate, val: value}); | ||||
}; | ||||
// MODE STATE HANDLING | ||||
// Utility functions for working with state. Exported because nested | ||||
// modes need to do this for their inner modes. | ||||
var copyState = CodeMirror.copyState = function(mode, state) { | ||||
if (state === true) return state; | ||||
if (mode.copyState) return mode.copyState(state); | ||||
var nstate = {}; | ||||
for (var n in state) { | ||||
var val = state[n]; | ||||
if (val instanceof Array) val = val.concat([]); | ||||
nstate[n] = val; | ||||
} | ||||
return nstate; | ||||
}; | ||||
var startState = CodeMirror.startState = function(mode, a1, a2) { | ||||
return mode.startState ? mode.startState(a1, a2) : true; | ||||
}; | ||||
// Given a mode and a state (for that mode), find the inner mode and | ||||
// state at the position that the state refers to. | ||||
CodeMirror.innerMode = function(mode, state) { | ||||
while (mode.innerMode) { | ||||
var info = mode.innerMode(state); | ||||
if (!info || info.mode == mode) break; | ||||
state = info.state; | ||||
mode = info.mode; | ||||
} | ||||
return info || {mode: mode, state: state}; | ||||
}; | ||||
// STANDARD COMMANDS | ||||
// Commands are parameter-less actions that can be performed on an | ||||
// editor, mostly used for keybindings. | ||||
var commands = CodeMirror.commands = { | ||||
selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);}, | ||||
singleSelection: function(cm) { | ||||
cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll); | ||||
}, | ||||
killLine: function(cm) { | ||||
deleteNearSelection(cm, function(range) { | ||||
if (range.empty()) { | ||||
var len = getLine(cm.doc, range.head.line).text.length; | ||||
if (range.head.ch == len && range.head.line < cm.lastLine()) | ||||
return {from: range.head, to: Pos(range.head.line + 1, 0)}; | ||||
else | ||||
return {from: range.head, to: Pos(range.head.line, len)}; | ||||
} else { | ||||
return {from: range.from(), to: range.to()}; | ||||
} | ||||
}); | ||||
}, | ||||
deleteLine: function(cm) { | ||||
deleteNearSelection(cm, function(range) { | ||||
return {from: Pos(range.from().line, 0), | ||||
to: clipPos(cm.doc, Pos(range.to().line + 1, 0))}; | ||||
}); | ||||
}, | ||||
delLineLeft: function(cm) { | ||||
deleteNearSelection(cm, function(range) { | ||||
return {from: Pos(range.from().line, 0), to: range.from()}; | ||||
}); | ||||
}, | ||||
delWrappedLineLeft: function(cm) { | ||||
deleteNearSelection(cm, function(range) { | ||||
var top = cm.charCoords(range.head, "div").top + 5; | ||||
var leftPos = cm.coordsChar({left: 0, top: top}, "div"); | ||||
return {from: leftPos, to: range.from()}; | ||||
}); | ||||
}, | ||||
delWrappedLineRight: function(cm) { | ||||
deleteNearSelection(cm, function(range) { | ||||
var top = cm.charCoords(range.head, "div").top + 5; | ||||
var rightPos = cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); | ||||
return {from: range.from(), to: rightPos }; | ||||
}); | ||||
}, | ||||
undo: function(cm) {cm.undo();}, | ||||
redo: function(cm) {cm.redo();}, | ||||
undoSelection: function(cm) {cm.undoSelection();}, | ||||
redoSelection: function(cm) {cm.redoSelection();}, | ||||
goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, | ||||
goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, | ||||
goLineStart: function(cm) { | ||||
cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); }, | ||||
{origin: "+move", bias: 1}); | ||||
}, | ||||
goLineStartSmart: function(cm) { | ||||
cm.extendSelectionsBy(function(range) { | ||||
return lineStartSmart(cm, range.head); | ||||
}, {origin: "+move", bias: 1}); | ||||
}, | ||||
goLineEnd: function(cm) { | ||||
cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); }, | ||||
{origin: "+move", bias: -1}); | ||||
}, | ||||
goLineRight: function(cm) { | ||||
cm.extendSelectionsBy(function(range) { | ||||
var top = cm.charCoords(range.head, "div").top + 5; | ||||
return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"); | ||||
}, sel_move); | ||||
}, | ||||
goLineLeft: function(cm) { | ||||
cm.extendSelectionsBy(function(range) { | ||||
var top = cm.charCoords(range.head, "div").top + 5; | ||||
return cm.coordsChar({left: 0, top: top}, "div"); | ||||
}, sel_move); | ||||
}, | ||||
goLineLeftSmart: function(cm) { | ||||
cm.extendSelectionsBy(function(range) { | ||||
var top = cm.charCoords(range.head, "div").top + 5; | ||||
var pos = cm.coordsChar({left: 0, top: top}, "div"); | ||||
if (pos.ch < cm.getLine(pos.line).search(/\S/)) return lineStartSmart(cm, range.head); | ||||
return pos; | ||||
}, sel_move); | ||||
}, | ||||
goLineUp: function(cm) {cm.moveV(-1, "line");}, | ||||
goLineDown: function(cm) {cm.moveV(1, "line");}, | ||||
goPageUp: function(cm) {cm.moveV(-1, "page");}, | ||||
goPageDown: function(cm) {cm.moveV(1, "page");}, | ||||
goCharLeft: function(cm) {cm.moveH(-1, "char");}, | ||||
goCharRight: function(cm) {cm.moveH(1, "char");}, | ||||
goColumnLeft: function(cm) {cm.moveH(-1, "column");}, | ||||
goColumnRight: function(cm) {cm.moveH(1, "column");}, | ||||
goWordLeft: function(cm) {cm.moveH(-1, "word");}, | ||||
goGroupRight: function(cm) {cm.moveH(1, "group");}, | ||||
goGroupLeft: function(cm) {cm.moveH(-1, "group");}, | ||||
goWordRight: function(cm) {cm.moveH(1, "word");}, | ||||
delCharBefore: function(cm) {cm.deleteH(-1, "char");}, | ||||
delCharAfter: function(cm) {cm.deleteH(1, "char");}, | ||||
delWordBefore: function(cm) {cm.deleteH(-1, "word");}, | ||||
delWordAfter: function(cm) {cm.deleteH(1, "word");}, | ||||
delGroupBefore: function(cm) {cm.deleteH(-1, "group");}, | ||||
delGroupAfter: function(cm) {cm.deleteH(1, "group");}, | ||||
indentAuto: function(cm) {cm.indentSelection("smart");}, | ||||
indentMore: function(cm) {cm.indentSelection("add");}, | ||||
indentLess: function(cm) {cm.indentSelection("subtract");}, | ||||
insertTab: function(cm) {cm.replaceSelection("\t");}, | ||||
insertSoftTab: function(cm) { | ||||
var spaces = [], ranges = cm.listSelections(), tabSize = cm.options.tabSize; | ||||
for (var i = 0; i < ranges.length; i++) { | ||||
var pos = ranges[i].from(); | ||||
var col = countColumn(cm.getLine(pos.line), pos.ch, tabSize); | ||||
spaces.push(new Array(tabSize - col % tabSize + 1).join(" ")); | ||||
} | ||||
cm.replaceSelections(spaces); | ||||
}, | ||||
defaultTab: function(cm) { | ||||
if (cm.somethingSelected()) cm.indentSelection("add"); | ||||
else cm.execCommand("insertTab"); | ||||
}, | ||||
transposeChars: function(cm) { | ||||
runInOp(cm, function() { | ||||
var ranges = cm.listSelections(), newSel = []; | ||||
for (var i = 0; i < ranges.length; i++) { | ||||
var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text; | ||||
if (line) { | ||||
if (cur.ch == line.length) cur = new Pos(cur.line, cur.ch - 1); | ||||
if (cur.ch > 0) { | ||||
cur = new Pos(cur.line, cur.ch + 1); | ||||
cm.replaceRange(line.charAt(cur.ch - 1) + line.charAt(cur.ch - 2), | ||||
Pos(cur.line, cur.ch - 2), cur, "+transpose"); | ||||
} else if (cur.line > cm.doc.first) { | ||||
var prev = getLine(cm.doc, cur.line - 1).text; | ||||
if (prev) | ||||
cm.replaceRange(line.charAt(0) + "\n" + prev.charAt(prev.length - 1), | ||||
Pos(cur.line - 1, prev.length - 1), Pos(cur.line, 1), "+transpose"); | ||||
} | ||||
} | ||||
newSel.push(new Range(cur, cur)); | ||||
} | ||||
cm.setSelections(newSel); | ||||
}); | ||||
}, | ||||
newlineAndIndent: function(cm) { | ||||
runInOp(cm, function() { | ||||
var len = cm.listSelections().length; | ||||
for (var i = 0; i < len; i++) { | ||||
var range = cm.listSelections()[i]; | ||||
cm.replaceRange("\n", range.anchor, range.head, "+input"); | ||||
cm.indentLine(range.from().line + 1, null, true); | ||||
ensureCursorVisible(cm); | ||||
} | ||||
}); | ||||
}, | ||||
toggleOverwrite: function(cm) {cm.toggleOverwrite();} | ||||
}; | ||||
// STANDARD KEYMAPS | ||||
var keyMap = CodeMirror.keyMap = {}; | ||||
keyMap.basic = { | ||||
"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown", | ||||
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown", | ||||
"Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore", | ||||
"Tab": "defaultTab", "Shift-Tab": "indentAuto", | ||||
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite", | ||||
"Esc": "singleSelection" | ||||
}; | ||||
// Note that the save and find-related commands aren't defined by | ||||
// default. User code or addons can define them. Unknown commands | ||||
// are simply ignored. | ||||
keyMap.pcDefault = { | ||||
"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo", | ||||
"Ctrl-Home": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Up": "goLineUp", "Ctrl-Down": "goLineDown", | ||||
"Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd", | ||||
"Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find", | ||||
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll", | ||||
"Ctrl-[": "indentLess", "Ctrl-]": "indentMore", | ||||
"Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection", | ||||
fallthrough: "basic" | ||||
}; | ||||
// Very basic readline/emacs-style bindings, which are standard on Mac. | ||||
keyMap.emacsy = { | ||||
"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown", | ||||
"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd", | ||||
"Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore", | ||||
"Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars" | ||||
}; | ||||
keyMap.macDefault = { | ||||
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", | ||||
"Cmd-Home": "goDocStart", "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", | ||||
"Alt-Right": "goGroupRight", "Cmd-Left": "goLineLeft", "Cmd-Right": "goLineRight", "Alt-Backspace": "delGroupBefore", | ||||
"Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find", | ||||
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll", | ||||
"Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delWrappedLineLeft", "Cmd-Delete": "delWrappedLineRight", | ||||
"Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection", "Ctrl-Up": "goDocStart", "Ctrl-Down": "goDocEnd", | ||||
fallthrough: ["basic", "emacsy"] | ||||
}; | ||||
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; | ||||
// KEYMAP DISPATCH | ||||
function normalizeKeyName(name) { | ||||
var parts = name.split(/-(?!$)/), name = parts[parts.length - 1]; | ||||
var alt, ctrl, shift, cmd; | ||||
for (var i = 0; i < parts.length - 1; i++) { | ||||
var mod = parts[i]; | ||||
if (/^(cmd|meta|m)$/i.test(mod)) cmd = true; | ||||
else if (/^a(lt)?$/i.test(mod)) alt = true; | ||||
else if (/^(c|ctrl|control)$/i.test(mod)) ctrl = true; | ||||
else if (/^s(hift)$/i.test(mod)) shift = true; | ||||
else throw new Error("Unrecognized modifier name: " + mod); | ||||
} | ||||
if (alt) name = "Alt-" + name; | ||||
if (ctrl) name = "Ctrl-" + name; | ||||
if (cmd) name = "Cmd-" + name; | ||||
if (shift) name = "Shift-" + name; | ||||
return name; | ||||
} | ||||
// This is a kludge to keep keymaps mostly working as raw objects | ||||
// (backwards compatibility) while at the same time support features | ||||
// like normalization and multi-stroke key bindings. It compiles a | ||||
// new normalized keymap, and then updates the old object to reflect | ||||
// this. | ||||
CodeMirror.normalizeKeyMap = function(keymap) { | ||||
var copy = {}; | ||||
for (var keyname in keymap) if (keymap.hasOwnProperty(keyname)) { | ||||
var value = keymap[keyname]; | ||||
if (/^(name|fallthrough|(de|at)tach)$/.test(keyname)) continue; | ||||
if (value == "...") { delete keymap[keyname]; continue; } | ||||
var keys = map(keyname.split(" "), normalizeKeyName); | ||||
for (var i = 0; i < keys.length; i++) { | ||||
var val, name; | ||||
if (i == keys.length - 1) { | ||||
name = keys.join(" "); | ||||
val = value; | ||||
} else { | ||||
name = keys.slice(0, i + 1).join(" "); | ||||
val = "..."; | ||||
} | ||||
var prev = copy[name]; | ||||
if (!prev) copy[name] = val; | ||||
else if (prev != val) throw new Error("Inconsistent bindings for " + name); | ||||
} | ||||
delete keymap[keyname]; | ||||
} | ||||
for (var prop in copy) keymap[prop] = copy[prop]; | ||||
return keymap; | ||||
}; | ||||
var lookupKey = CodeMirror.lookupKey = function(key, map, handle, context) { | ||||
map = getKeyMap(map); | ||||
var found = map.call ? map.call(key, context) : map[key]; | ||||
if (found === false) return "nothing"; | ||||
if (found === "...") return "multi"; | ||||
if (found != null && handle(found)) return "handled"; | ||||
if (map.fallthrough) { | ||||
if (Object.prototype.toString.call(map.fallthrough) != "[object Array]") | ||||
return lookupKey(key, map.fallthrough, handle, context); | ||||
for (var i = 0; i < map.fallthrough.length; i++) { | ||||
var result = lookupKey(key, map.fallthrough[i], handle, context); | ||||
if (result) return result; | ||||
} | ||||
} | ||||
}; | ||||
// Modifier key presses don't count as 'real' key presses for the | ||||
// purpose of keymap fallthrough. | ||||
var isModifierKey = CodeMirror.isModifierKey = function(value) { | ||||
var name = typeof value == "string" ? value : keyNames[value.keyCode]; | ||||
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; | ||||
}; | ||||
// Look up the name of a key as indicated by an event object. | ||||
var keyName = CodeMirror.keyName = function(event, noShift) { | ||||
if (presto && event.keyCode == 34 && event["char"]) return false; | ||||
var base = keyNames[event.keyCode], name = base; | ||||
if (name == null || event.altGraphKey) return false; | ||||
if (event.altKey && base != "Alt") name = "Alt-" + name; | ||||
if ((flipCtrlCmd ? event.metaKey : event.ctrlKey) && base != "Ctrl") name = "Ctrl-" + name; | ||||
if ((flipCtrlCmd ? event.ctrlKey : event.metaKey) && base != "Cmd") name = "Cmd-" + name; | ||||
if (!noShift && event.shiftKey && base != "Shift") name = "Shift-" + name; | ||||
return name; | ||||
}; | ||||
function getKeyMap(val) { | ||||
return typeof val == "string" ? keyMap[val] : val; | ||||
} | ||||
// FROMTEXTAREA | ||||
CodeMirror.fromTextArea = function(textarea, options) { | ||||
options = options ? copyObj(options) : {}; | ||||
options.value = textarea.value; | ||||
if (!options.tabindex && textarea.tabIndex) | ||||
options.tabindex = textarea.tabIndex; | ||||
if (!options.placeholder && textarea.placeholder) | ||||
options.placeholder = textarea.placeholder; | ||||
// Set autofocus to true if this textarea is focused, or if it has | ||||
// autofocus and no other element is focused. | ||||
if (options.autofocus == null) { | ||||
var hasFocus = activeElt(); | ||||
options.autofocus = hasFocus == textarea || | ||||
textarea.getAttribute("autofocus") != null && hasFocus == document.body; | ||||
} | ||||
function save() {textarea.value = cm.getValue();} | ||||
if (textarea.form) { | ||||
on(textarea.form, "submit", save); | ||||
// Deplorable hack to make the submit method do the right thing. | ||||
if (!options.leaveSubmitMethodAlone) { | ||||
var form = textarea.form, realSubmit = form.submit; | ||||
try { | ||||
var wrappedSubmit = form.submit = function() { | ||||
save(); | ||||
form.submit = realSubmit; | ||||
form.submit(); | ||||
form.submit = wrappedSubmit; | ||||
}; | ||||
} catch(e) {} | ||||
} | ||||
} | ||||
options.finishInit = function(cm) { | ||||
cm.save = save; | ||||
cm.getTextArea = function() { return textarea; }; | ||||
cm.toTextArea = function() { | ||||
cm.toTextArea = isNaN; // Prevent this from being ran twice | ||||
save(); | ||||
textarea.parentNode.removeChild(cm.getWrapperElement()); | ||||
textarea.style.display = ""; | ||||
if (textarea.form) { | ||||
off(textarea.form, "submit", save); | ||||
if (typeof textarea.form.submit == "function") | ||||
textarea.form.submit = realSubmit; | ||||
} | ||||
}; | ||||
}; | ||||
textarea.style.display = "none"; | ||||
var cm = CodeMirror(function(node) { | ||||
textarea.parentNode.insertBefore(node, textarea.nextSibling); | ||||
}, options); | ||||
return cm; | ||||
}; | ||||
// STRING STREAM | ||||
// Fed to the mode parsers, provides helper functions to make | ||||
// parsers more succinct. | ||||
var StringStream = CodeMirror.StringStream = function(string, tabSize) { | ||||
this.pos = this.start = 0; | ||||
this.string = string; | ||||
this.tabSize = tabSize || 8; | ||||
this.lastColumnPos = this.lastColumnValue = 0; | ||||
this.lineStart = 0; | ||||
}; | ||||
StringStream.prototype = { | ||||
eol: function() {return this.pos >= this.string.length;}, | ||||
sol: function() {return this.pos == this.lineStart;}, | ||||
peek: function() {return this.string.charAt(this.pos) || undefined;}, | ||||
next: function() { | ||||
if (this.pos < this.string.length) | ||||
return this.string.charAt(this.pos++); | ||||
}, | ||||
eat: function(match) { | ||||
var ch = this.string.charAt(this.pos); | ||||
if (typeof match == "string") var ok = ch == match; | ||||
else var ok = ch && (match.test ? match.test(ch) : match(ch)); | ||||
if (ok) {++this.pos; return ch;} | ||||
}, | ||||
eatWhile: function(match) { | ||||
var start = this.pos; | ||||
while (this.eat(match)){} | ||||
return this.pos > start; | ||||
}, | ||||
eatSpace: function() { | ||||
var start = this.pos; | ||||
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos; | ||||
return this.pos > start; | ||||
}, | ||||
skipToEnd: function() {this.pos = this.string.length;}, | ||||
skipTo: function(ch) { | ||||
var found = this.string.indexOf(ch, this.pos); | ||||
if (found > -1) {this.pos = found; return true;} | ||||
}, | ||||
backUp: function(n) {this.pos -= n;}, | ||||
column: function() { | ||||
if (this.lastColumnPos < this.start) { | ||||
this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue); | ||||
this.lastColumnPos = this.start; | ||||
} | ||||
return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); | ||||
}, | ||||
indentation: function() { | ||||
return countColumn(this.string, null, this.tabSize) - | ||||
(this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0); | ||||
}, | ||||
match: function(pattern, consume, caseInsensitive) { | ||||
if (typeof pattern == "string") { | ||||
var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; | ||||
var substr = this.string.substr(this.pos, pattern.length); | ||||
if (cased(substr) == cased(pattern)) { | ||||
if (consume !== false) this.pos += pattern.length; | ||||
return true; | ||||
} | ||||
} else { | ||||
var match = this.string.slice(this.pos).match(pattern); | ||||
if (match && match.index > 0) return null; | ||||
if (match && consume !== false) this.pos += match[0].length; | ||||
return match; | ||||
} | ||||
}, | ||||
current: function(){return this.string.slice(this.start, this.pos);}, | ||||
hideFirstChars: function(n, inner) { | ||||
this.lineStart += n; | ||||
try { return inner(); } | ||||
finally { this.lineStart -= n; } | ||||
} | ||||
}; | ||||
// TEXTMARKERS | ||||
// Created with markText and setBookmark methods. A TextMarker is a | ||||
// handle that can be used to clear or find a marked position in the | ||||
// document. Line objects hold arrays (markedSpans) containing | ||||
// {from, to, marker} object pointing to such marker objects, and | ||||
// indicating that such a marker is present on that line. Multiple | ||||
// lines may point to the same marker when it spans across lines. | ||||
// The spans will have null for their from/to properties when the | ||||
// marker continues beyond the start/end of the line. Markers have | ||||
// links back to the lines they currently touch. | ||||
var nextMarkerId = 0; | ||||
var TextMarker = CodeMirror.TextMarker = function(doc, type) { | ||||
this.lines = []; | ||||
this.type = type; | ||||
this.doc = doc; | ||||
this.id = ++nextMarkerId; | ||||
}; | ||||
eventMixin(TextMarker); | ||||
// Clear the marker. | ||||
TextMarker.prototype.clear = function() { | ||||
if (this.explicitlyCleared) return; | ||||
var cm = this.doc.cm, withOp = cm && !cm.curOp; | ||||
if (withOp) startOperation(cm); | ||||
if (hasHandler(this, "clear")) { | ||||
var found = this.find(); | ||||
if (found) signalLater(this, "clear", found.from, found.to); | ||||
} | ||||
var min = null, max = null; | ||||
for (var i = 0; i < this.lines.length; ++i) { | ||||
var line = this.lines[i]; | ||||
var span = getMarkedSpanFor(line.markedSpans, this); | ||||
if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text"); | ||||
else if (cm) { | ||||
if (span.to != null) max = lineNo(line); | ||||
if (span.from != null) min = lineNo(line); | ||||
} | ||||
line.markedSpans = removeMarkedSpan(line.markedSpans, span); | ||||
if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm) | ||||
updateLineHeight(line, textHeight(cm.display)); | ||||
} | ||||
if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) { | ||||
var visual = visualLine(this.lines[i]), len = lineLength(visual); | ||||
if (len > cm.display.maxLineLength) { | ||||
cm.display.maxLine = visual; | ||||
cm.display.maxLineLength = len; | ||||
cm.display.maxLineChanged = true; | ||||
} | ||||
} | ||||
if (min != null && cm && this.collapsed) regChange(cm, min, max + 1); | ||||
this.lines.length = 0; | ||||
this.explicitlyCleared = true; | ||||
if (this.atomic && this.doc.cantEdit) { | ||||
this.doc.cantEdit = false; | ||||
if (cm) reCheckSelection(cm.doc); | ||||
} | ||||
if (cm) signalLater(cm, "markerCleared", cm, this); | ||||
if (withOp) endOperation(cm); | ||||
if (this.parent) this.parent.clear(); | ||||
}; | ||||
// Find the position of the marker in the document. Returns a {from, | ||||
// to} object by default. Side can be passed to get a specific side | ||||
// -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the | ||||
// Pos objects returned contain a line object, rather than a line | ||||
// number (used to prevent looking up the same line twice). | ||||
TextMarker.prototype.find = function(side, lineObj) { | ||||
if (side == null && this.type == "bookmark") side = 1; | ||||
var from, to; | ||||
for (var i = 0; i < this.lines.length; ++i) { | ||||
var line = this.lines[i]; | ||||
var span = getMarkedSpanFor(line.markedSpans, this); | ||||
if (span.from != null) { | ||||
from = Pos(lineObj ? line : lineNo(line), span.from); | ||||
if (side == -1) return from; | ||||
} | ||||
if (span.to != null) { | ||||
to = Pos(lineObj ? line : lineNo(line), span.to); | ||||
if (side == 1) return to; | ||||
} | ||||
} | ||||
return from && {from: from, to: to}; | ||||
}; | ||||
// Signals that the marker's widget changed, and surrounding layout | ||||
// should be recomputed. | ||||
TextMarker.prototype.changed = function() { | ||||
var pos = this.find(-1, true), widget = this, cm = this.doc.cm; | ||||
if (!pos || !cm) return; | ||||
runInOp(cm, function() { | ||||
var line = pos.line, lineN = lineNo(pos.line); | ||||
var view = findViewForLine(cm, lineN); | ||||
if (view) { | ||||
clearLineMeasurementCacheFor(view); | ||||
cm.curOp.selectionChanged = cm.curOp.forceUpdate = true; | ||||
} | ||||
cm.curOp.updateMaxLine = true; | ||||
if (!lineIsHidden(widget.doc, line) && widget.height != null) { | ||||
var oldHeight = widget.height; | ||||
widget.height = null; | ||||
var dHeight = widgetHeight(widget) - oldHeight; | ||||
if (dHeight) | ||||
updateLineHeight(line, line.height + dHeight); | ||||
} | ||||
}); | ||||
}; | ||||
TextMarker.prototype.attachLine = function(line) { | ||||
if (!this.lines.length && this.doc.cm) { | ||||
var op = this.doc.cm.curOp; | ||||
if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1) | ||||
(op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this); | ||||
} | ||||
this.lines.push(line); | ||||
}; | ||||
TextMarker.prototype.detachLine = function(line) { | ||||
this.lines.splice(indexOf(this.lines, line), 1); | ||||
if (!this.lines.length && this.doc.cm) { | ||||
var op = this.doc.cm.curOp; | ||||
(op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this); | ||||
} | ||||
}; | ||||
// Collapsed markers have unique ids, in order to be able to order | ||||
// them, which is needed for uniquely determining an outer marker | ||||
// when they overlap (they may nest, but not partially overlap). | ||||
var nextMarkerId = 0; | ||||
// Create a marker, wire it up to the right lines, and | ||||
function markText(doc, from, to, options, type) { | ||||
// Shared markers (across linked documents) are handled separately | ||||
// (markTextShared will call out to this again, once per | ||||
// document). | ||||
if (options && options.shared) return markTextShared(doc, from, to, options, type); | ||||
// Ensure we are in an operation. | ||||
if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); | ||||
var marker = new TextMarker(doc, type), diff = cmp(from, to); | ||||
if (options) copyObj(options, marker, false); | ||||
// Don't connect empty markers unless clearWhenEmpty is false | ||||
if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false) | ||||
return marker; | ||||
if (marker.replacedWith) { | ||||
// Showing up as a widget implies collapsed (widget replaces text) | ||||
marker.collapsed = true; | ||||
marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget"); | ||||
if (!options.handleMouseEvents) marker.widgetNode.setAttribute("cm-ignore-events", "true"); | ||||
if (options.insertLeft) marker.widgetNode.insertLeft = true; | ||||
} | ||||
if (marker.collapsed) { | ||||
if (conflictingCollapsedRange(doc, from.line, from, to, marker) || | ||||
from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker)) | ||||
throw new Error("Inserting collapsed marker partially overlapping an existing one"); | ||||
sawCollapsedSpans = true; | ||||
} | ||||
if (marker.addToHistory) | ||||
addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN); | ||||
var curLine = from.line, cm = doc.cm, updateMaxLine; | ||||
doc.iter(curLine, to.line + 1, function(line) { | ||||
if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine) | ||||
updateMaxLine = true; | ||||
if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0); | ||||
addMarkedSpan(line, new MarkedSpan(marker, | ||||
curLine == from.line ? from.ch : null, | ||||
curLine == to.line ? to.ch : null)); | ||||
++curLine; | ||||
}); | ||||
// lineIsHidden depends on the presence of the spans, so needs a second pass | ||||
if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) { | ||||
if (lineIsHidden(doc, line)) updateLineHeight(line, 0); | ||||
}); | ||||
if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); }); | ||||
if (marker.readOnly) { | ||||
sawReadOnlySpans = true; | ||||
if (doc.history.done.length || doc.history.undone.length) | ||||
doc.clearHistory(); | ||||
} | ||||
if (marker.collapsed) { | ||||
marker.id = ++nextMarkerId; | ||||
marker.atomic = true; | ||||
} | ||||
if (cm) { | ||||
// Sync editor state | ||||
if (updateMaxLine) cm.curOp.updateMaxLine = true; | ||||
if (marker.collapsed) | ||||
regChange(cm, from.line, to.line + 1); | ||||
else if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.css) | ||||
for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text"); | ||||
if (marker.atomic) reCheckSelection(cm.doc); | ||||
signalLater(cm, "markerAdded", cm, marker); | ||||
} | ||||
return marker; | ||||
} | ||||
// SHARED TEXTMARKERS | ||||
// A shared marker spans multiple linked documents. It is | ||||
// implemented as a meta-marker-object controlling multiple normal | ||||
// markers. | ||||
var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) { | ||||
this.markers = markers; | ||||
this.primary = primary; | ||||
for (var i = 0; i < markers.length; ++i) | ||||
markers[i].parent = this; | ||||
}; | ||||
eventMixin(SharedTextMarker); | ||||
SharedTextMarker.prototype.clear = function() { | ||||
if (this.explicitlyCleared) return; | ||||
this.explicitlyCleared = true; | ||||
for (var i = 0; i < this.markers.length; ++i) | ||||
this.markers[i].clear(); | ||||
signalLater(this, "clear"); | ||||
}; | ||||
SharedTextMarker.prototype.find = function(side, lineObj) { | ||||
return this.primary.find(side, lineObj); | ||||
}; | ||||
function markTextShared(doc, from, to, options, type) { | ||||
options = copyObj(options); | ||||
options.shared = false; | ||||
var markers = [markText(doc, from, to, options, type)], primary = markers[0]; | ||||
var widget = options.widgetNode; | ||||
linkedDocs(doc, function(doc) { | ||||
if (widget) options.widgetNode = widget.cloneNode(true); | ||||
markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type)); | ||||
for (var i = 0; i < doc.linked.length; ++i) | ||||
if (doc.linked[i].isParent) return; | ||||
primary = lst(markers); | ||||
}); | ||||
return new SharedTextMarker(markers, primary); | ||||
} | ||||
function findSharedMarkers(doc) { | ||||
return doc.findMarks(Pos(doc.first, 0), doc.clipPos(Pos(doc.lastLine())), | ||||
function(m) { return m.parent; }); | ||||
} | ||||
function copySharedMarkers(doc, markers) { | ||||
for (var i = 0; i < markers.length; i++) { | ||||
var marker = markers[i], pos = marker.find(); | ||||
var mFrom = doc.clipPos(pos.from), mTo = doc.clipPos(pos.to); | ||||
if (cmp(mFrom, mTo)) { | ||||
var subMark = markText(doc, mFrom, mTo, marker.primary, marker.primary.type); | ||||
marker.markers.push(subMark); | ||||
subMark.parent = marker; | ||||
} | ||||
} | ||||
} | ||||
function detachSharedMarkers(markers) { | ||||
for (var i = 0; i < markers.length; i++) { | ||||
var marker = markers[i], linked = [marker.primary.doc];; | ||||
linkedDocs(marker.primary.doc, function(d) { linked.push(d); }); | ||||
for (var j = 0; j < marker.markers.length; j++) { | ||||
var subMarker = marker.markers[j]; | ||||
if (indexOf(linked, subMarker.doc) == -1) { | ||||
subMarker.parent = null; | ||||
marker.markers.splice(j--, 1); | ||||
} | ||||
} | ||||
} | ||||
} | ||||
// TEXTMARKER SPANS | ||||
function MarkedSpan(marker, from, to) { | ||||
this.marker = marker; | ||||
this.from = from; this.to = to; | ||||
} | ||||
// Search an array of spans for a span matching the given marker. | ||||
function getMarkedSpanFor(spans, marker) { | ||||
if (spans) for (var i = 0; i < spans.length; ++i) { | ||||
var span = spans[i]; | ||||
if (span.marker == marker) return span; | ||||
} | ||||
} | ||||
// Remove a span from an array, returning undefined if no spans are | ||||
// left (we don't store arrays for lines without spans). | ||||
function removeMarkedSpan(spans, span) { | ||||
for (var r, i = 0; i < spans.length; ++i) | ||||
if (spans[i] != span) (r || (r = [])).push(spans[i]); | ||||
return r; | ||||
} | ||||
// Add a span to a line. | ||||
function addMarkedSpan(line, span) { | ||||
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; | ||||
span.marker.attachLine(line); | ||||
} | ||||
// Used for the algorithm that adjusts markers for a change in the | ||||
// document. These functions cut an array of spans at a given | ||||
// character position, returning an array of remaining chunks (or | ||||
// undefined if nothing remains). | ||||
function markedSpansBefore(old, startCh, isInsert) { | ||||
if (old) for (var i = 0, nw; i < old.length; ++i) { | ||||
var span = old[i], marker = span.marker; | ||||
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh); | ||||
if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) { | ||||
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); | ||||
(nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to)); | ||||
} | ||||
} | ||||
return nw; | ||||
} | ||||
function markedSpansAfter(old, endCh, isInsert) { | ||||
if (old) for (var i = 0, nw; i < old.length; ++i) { | ||||
var span = old[i], marker = span.marker; | ||||
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh); | ||||
if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) { | ||||
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); | ||||
(nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh, | ||||
span.to == null ? null : span.to - endCh)); | ||||
} | ||||
} | ||||
return nw; | ||||
} | ||||
// Given a change object, compute the new set of marker spans that | ||||
// cover the line in which the change took place. Removes spans | ||||
// entirely within the change, reconnects spans belonging to the | ||||
// same marker that appear on both sides of the change, and cuts off | ||||
// spans partially within the change. Returns an array of span | ||||
// arrays with one element for each line in (after) the change. | ||||
function stretchSpansOverChange(doc, change) { | ||||
if (change.full) return null; | ||||
var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans; | ||||
var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans; | ||||
if (!oldFirst && !oldLast) return null; | ||||
var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0; | ||||
// Get the spans that 'stick out' on both sides | ||||
var first = markedSpansBefore(oldFirst, startCh, isInsert); | ||||
var last = markedSpansAfter(oldLast, endCh, isInsert); | ||||
// Next, merge those two ends | ||||
var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); | ||||
if (first) { | ||||
// Fix up .to properties of first | ||||
for (var i = 0; i < first.length; ++i) { | ||||
var span = first[i]; | ||||
if (span.to == null) { | ||||
var found = getMarkedSpanFor(last, span.marker); | ||||
if (!found) span.to = startCh; | ||||
else if (sameLine) span.to = found.to == null ? null : found.to + offset; | ||||
} | ||||
} | ||||
} | ||||
if (last) { | ||||
// Fix up .from in last (or move them into first in case of sameLine) | ||||
for (var i = 0; i < last.length; ++i) { | ||||
var span = last[i]; | ||||
if (span.to != null) span.to += offset; | ||||
if (span.from == null) { | ||||
var found = getMarkedSpanFor(first, span.marker); | ||||
if (!found) { | ||||
span.from = offset; | ||||
if (sameLine) (first || (first = [])).push(span); | ||||
} | ||||
} else { | ||||
span.from += offset; | ||||
if (sameLine) (first || (first = [])).push(span); | ||||
} | ||||
} | ||||
} | ||||
// Make sure we didn't create any zero-length spans | ||||
if (first) first = clearEmptySpans(first); | ||||
if (last && last != first) last = clearEmptySpans(last); | ||||
var newMarkers = [first]; | ||||
if (!sameLine) { | ||||
// Fill gap with whole-line-spans | ||||
var gap = change.text.length - 2, gapMarkers; | ||||
if (gap > 0 && first) | ||||
for (var i = 0; i < first.length; ++i) | ||||
if (first[i].to == null) | ||||
(gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null)); | ||||
for (var i = 0; i < gap; ++i) | ||||
newMarkers.push(gapMarkers); | ||||
newMarkers.push(last); | ||||
} | ||||
return newMarkers; | ||||
} | ||||
// Remove spans that are empty and don't have a clearWhenEmpty | ||||
// option of false. | ||||
function clearEmptySpans(spans) { | ||||
for (var i = 0; i < spans.length; ++i) { | ||||
var span = spans[i]; | ||||
if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false) | ||||
spans.splice(i--, 1); | ||||
} | ||||
if (!spans.length) return null; | ||||
return spans; | ||||
} | ||||
// Used for un/re-doing changes from the history. Combines the | ||||
// result of computing the existing spans with the set of spans that | ||||
// existed in the history (so that deleting around a span and then | ||||
// undoing brings back the span). | ||||
function mergeOldSpans(doc, change) { | ||||
var old = getOldSpans(doc, change); | ||||
var stretched = stretchSpansOverChange(doc, change); | ||||
if (!old) return stretched; | ||||
if (!stretched) return old; | ||||
for (var i = 0; i < old.length; ++i) { | ||||
var oldCur = old[i], stretchCur = stretched[i]; | ||||
if (oldCur && stretchCur) { | ||||
spans: for (var j = 0; j < stretchCur.length; ++j) { | ||||
var span = stretchCur[j]; | ||||
for (var k = 0; k < oldCur.length; ++k) | ||||
if (oldCur[k].marker == span.marker) continue spans; | ||||
oldCur.push(span); | ||||
} | ||||
} else if (stretchCur) { | ||||
old[i] = stretchCur; | ||||
} | ||||
} | ||||
return old; | ||||
} | ||||
// Used to 'clip' out readOnly ranges when making a change. | ||||
function removeReadOnlyRanges(doc, from, to) { | ||||
var markers = null; | ||||
doc.iter(from.line, to.line + 1, function(line) { | ||||
if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) { | ||||
var mark = line.markedSpans[i].marker; | ||||
if (mark.readOnly && (!markers || indexOf(markers, mark) == -1)) | ||||
(markers || (markers = [])).push(mark); | ||||
} | ||||
}); | ||||
if (!markers) return null; | ||||
var parts = [{from: from, to: to}]; | ||||
for (var i = 0; i < markers.length; ++i) { | ||||
var mk = markers[i], m = mk.find(0); | ||||
for (var j = 0; j < parts.length; ++j) { | ||||
var p = parts[j]; | ||||
if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue; | ||||
var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to); | ||||
if (dfrom < 0 || !mk.inclusiveLeft && !dfrom) | ||||
newParts.push({from: p.from, to: m.from}); | ||||
if (dto > 0 || !mk.inclusiveRight && !dto) | ||||
newParts.push({from: m.to, to: p.to}); | ||||
parts.splice.apply(parts, newParts); | ||||
j += newParts.length - 1; | ||||
} | ||||
} | ||||
return parts; | ||||
} | ||||
// Connect or disconnect spans from a line. | ||||
function detachMarkedSpans(line) { | ||||
var spans = line.markedSpans; | ||||
if (!spans) return; | ||||
for (var i = 0; i < spans.length; ++i) | ||||
spans[i].marker.detachLine(line); | ||||
line.markedSpans = null; | ||||
} | ||||
function attachMarkedSpans(line, spans) { | ||||
if (!spans) return; | ||||
for (var i = 0; i < spans.length; ++i) | ||||
spans[i].marker.attachLine(line); | ||||
line.markedSpans = spans; | ||||
} | ||||
// Helpers used when computing which overlapping collapsed span | ||||
// counts as the larger one. | ||||
function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; } | ||||
function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; } | ||||
// Returns a number indicating which of two overlapping collapsed | ||||
// spans is larger (and thus includes the other). Falls back to | ||||
// comparing ids when the spans cover exactly the same range. | ||||
function compareCollapsedMarkers(a, b) { | ||||
var lenDiff = a.lines.length - b.lines.length; | ||||
if (lenDiff != 0) return lenDiff; | ||||
var aPos = a.find(), bPos = b.find(); | ||||
var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b); | ||||
if (fromCmp) return -fromCmp; | ||||
var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b); | ||||
if (toCmp) return toCmp; | ||||
return b.id - a.id; | ||||
} | ||||
// Find out whether a line ends or starts in a collapsed span. If | ||||
// so, return the marker for that span. | ||||
function collapsedSpanAtSide(line, start) { | ||||
var sps = sawCollapsedSpans && line.markedSpans, found; | ||||
if (sps) for (var sp, i = 0; i < sps.length; ++i) { | ||||
sp = sps[i]; | ||||
if (sp.marker.collapsed && (start ? sp.from : sp.to) == null && | ||||
(!found || compareCollapsedMarkers(found, sp.marker) < 0)) | ||||
found = sp.marker; | ||||
} | ||||
return found; | ||||
} | ||||
function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); } | ||||
function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); } | ||||
// Test whether there exists a collapsed span that partially | ||||
// overlaps (covers the start or end, but not both) of a new span. | ||||
// Such overlap is not allowed. | ||||
function conflictingCollapsedRange(doc, lineNo, from, to, marker) { | ||||
var line = getLine(doc, lineNo); | ||||
var sps = sawCollapsedSpans && line.markedSpans; | ||||
if (sps) for (var i = 0; i < sps.length; ++i) { | ||||
var sp = sps[i]; | ||||
if (!sp.marker.collapsed) continue; | ||||
var found = sp.marker.find(0); | ||||
var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker); | ||||
var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker); | ||||
if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue; | ||||
if (fromCmp <= 0 && (cmp(found.to, from) > 0 || (sp.marker.inclusiveRight && marker.inclusiveLeft)) || | ||||
fromCmp >= 0 && (cmp(found.from, to) < 0 || (sp.marker.inclusiveLeft && marker.inclusiveRight))) | ||||
return true; | ||||
} | ||||
} | ||||
// A visual line is a line as drawn on the screen. Folding, for | ||||
// example, can cause multiple logical lines to appear on the same | ||||
// visual line. This finds the start of the visual line that the | ||||
// given line is part of (usually that is the line itself). | ||||
function visualLine(line) { | ||||
var merged; | ||||
while (merged = collapsedSpanAtStart(line)) | ||||
line = merged.find(-1, true).line; | ||||
return line; | ||||
} | ||||
// Returns an array of logical lines that continue the visual line | ||||
// started by the argument, or undefined if there are no such lines. | ||||
function visualLineContinued(line) { | ||||
var merged, lines; | ||||
while (merged = collapsedSpanAtEnd(line)) { | ||||
line = merged.find(1, true).line; | ||||
(lines || (lines = [])).push(line); | ||||
} | ||||
return lines; | ||||
} | ||||
// Get the line number of the start of the visual line that the | ||||
// given line number is part of. | ||||
function visualLineNo(doc, lineN) { | ||||
var line = getLine(doc, lineN), vis = visualLine(line); | ||||
if (line == vis) return lineN; | ||||
return lineNo(vis); | ||||
} | ||||
// Get the line number of the start of the next visual line after | ||||
// the given line. | ||||
function visualLineEndNo(doc, lineN) { | ||||
if (lineN > doc.lastLine()) return lineN; | ||||
var line = getLine(doc, lineN), merged; | ||||
if (!lineIsHidden(doc, line)) return lineN; | ||||
while (merged = collapsedSpanAtEnd(line)) | ||||
line = merged.find(1, true).line; | ||||
return lineNo(line) + 1; | ||||
} | ||||
// Compute whether a line is hidden. Lines count as hidden when they | ||||
// are part of a visual line that starts with another line, or when | ||||
// they are entirely covered by collapsed, non-widget span. | ||||
function lineIsHidden(doc, line) { | ||||
var sps = sawCollapsedSpans && line.markedSpans; | ||||
if (sps) for (var sp, i = 0; i < sps.length; ++i) { | ||||
sp = sps[i]; | ||||
if (!sp.marker.collapsed) continue; | ||||
if (sp.from == null) return true; | ||||
if (sp.marker.widgetNode) continue; | ||||
if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp)) | ||||
return true; | ||||
} | ||||
} | ||||
function lineIsHiddenInner(doc, line, span) { | ||||
if (span.to == null) { | ||||
var end = span.marker.find(1, true); | ||||
return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker)); | ||||
} | ||||
if (span.marker.inclusiveRight && span.to == line.text.length) | ||||
return true; | ||||
for (var sp, i = 0; i < line.markedSpans.length; ++i) { | ||||
sp = line.markedSpans[i]; | ||||
if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to && | ||||
(sp.to == null || sp.to != span.from) && | ||||
(sp.marker.inclusiveLeft || span.marker.inclusiveRight) && | ||||
lineIsHiddenInner(doc, line, sp)) return true; | ||||
} | ||||
} | ||||
// LINE WIDGETS | ||||
// Line widgets are block elements displayed above or below a line. | ||||
var LineWidget = CodeMirror.LineWidget = function(doc, node, options) { | ||||
if (options) for (var opt in options) if (options.hasOwnProperty(opt)) | ||||
this[opt] = options[opt]; | ||||
this.doc = doc; | ||||
this.node = node; | ||||
}; | ||||
eventMixin(LineWidget); | ||||
function adjustScrollWhenAboveVisible(cm, line, diff) { | ||||
if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop)) | ||||
addToScrollPos(cm, null, diff); | ||||
} | ||||
LineWidget.prototype.clear = function() { | ||||
var cm = this.doc.cm, ws = this.line.widgets, line = this.line, no = lineNo(line); | ||||
if (no == null || !ws) return; | ||||
for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1); | ||||
if (!ws.length) line.widgets = null; | ||||
var height = widgetHeight(this); | ||||
updateLineHeight(line, Math.max(0, line.height - height)); | ||||
if (cm) runInOp(cm, function() { | ||||
adjustScrollWhenAboveVisible(cm, line, -height); | ||||
regLineChange(cm, no, "widget"); | ||||
}); | ||||
}; | ||||
LineWidget.prototype.changed = function() { | ||||
var oldH = this.height, cm = this.doc.cm, line = this.line; | ||||
this.height = null; | ||||
var diff = widgetHeight(this) - oldH; | ||||
if (!diff) return; | ||||
updateLineHeight(line, line.height + diff); | ||||
if (cm) runInOp(cm, function() { | ||||
cm.curOp.forceUpdate = true; | ||||
adjustScrollWhenAboveVisible(cm, line, diff); | ||||
}); | ||||
}; | ||||
function widgetHeight(widget) { | ||||
if (widget.height != null) return widget.height; | ||||
var cm = widget.doc.cm; | ||||
if (!cm) return 0; | ||||
if (!contains(document.body, widget.node)) { | ||||
var parentStyle = "position: relative;"; | ||||
if (widget.coverGutter) | ||||
parentStyle += "margin-left: -" + cm.display.gutters.offsetWidth + "px;"; | ||||
if (widget.noHScroll) | ||||
parentStyle += "width: " + cm.display.wrapper.clientWidth + "px;"; | ||||
removeChildrenAndAdd(cm.display.measure, elt("div", [widget.node], null, parentStyle)); | ||||
} | ||||
return widget.height = widget.node.offsetHeight; | ||||
} | ||||
function addLineWidget(doc, handle, node, options) { | ||||
var widget = new LineWidget(doc, node, options); | ||||
var cm = doc.cm; | ||||
if (cm && widget.noHScroll) cm.display.alignWidgets = true; | ||||
changeLine(doc, handle, "widget", function(line) { | ||||
var widgets = line.widgets || (line.widgets = []); | ||||
if (widget.insertAt == null) widgets.push(widget); | ||||
else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget); | ||||
widget.line = line; | ||||
if (cm && !lineIsHidden(doc, line)) { | ||||
var aboveVisible = heightAtLine(line) < doc.scrollTop; | ||||
updateLineHeight(line, line.height + widgetHeight(widget)); | ||||
if (aboveVisible) addToScrollPos(cm, null, widget.height); | ||||
cm.curOp.forceUpdate = true; | ||||
} | ||||
return true; | ||||
}); | ||||
return widget; | ||||
} | ||||
// LINE DATA STRUCTURE | ||||
// Line objects. These hold state related to a line, including | ||||
// highlighting info (the styles array). | ||||
var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { | ||||
this.text = text; | ||||
attachMarkedSpans(this, markedSpans); | ||||
this.height = estimateHeight ? estimateHeight(this) : 1; | ||||
}; | ||||
eventMixin(Line); | ||||
Line.prototype.lineNo = function() { return lineNo(this); }; | ||||
// Change the content (text, markers) of a line. Automatically | ||||
// invalidates cached information and tries to re-estimate the | ||||
// line's height. | ||||
function updateLine(line, text, markedSpans, estimateHeight) { | ||||
line.text = text; | ||||
if (line.stateAfter) line.stateAfter = null; | ||||
if (line.styles) line.styles = null; | ||||
if (line.order != null) line.order = null; | ||||
detachMarkedSpans(line); | ||||
attachMarkedSpans(line, markedSpans); | ||||
var estHeight = estimateHeight ? estimateHeight(line) : 1; | ||||
if (estHeight != line.height) updateLineHeight(line, estHeight); | ||||
} | ||||
// Detach a line from the document tree and its markers. | ||||
function cleanUpLine(line) { | ||||
line.parent = null; | ||||
detachMarkedSpans(line); | ||||
} | ||||
function extractLineClasses(type, output) { | ||||
if (type) for (;;) { | ||||
var lineClass = type.match(/(?:^|\s+)line-(background-)?(\S+)/); | ||||
if (!lineClass) break; | ||||
type = type.slice(0, lineClass.index) + type.slice(lineClass.index + lineClass[0].length); | ||||
var prop = lineClass[1] ? "bgClass" : "textClass"; | ||||
if (output[prop] == null) | ||||
output[prop] = lineClass[2]; | ||||
else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(output[prop])) | ||||
output[prop] += " " + lineClass[2]; | ||||
} | ||||
return type; | ||||
} | ||||
function callBlankLine(mode, state) { | ||||
if (mode.blankLine) return mode.blankLine(state); | ||||
if (!mode.innerMode) return; | ||||
var inner = CodeMirror.innerMode(mode, state); | ||||
if (inner.mode.blankLine) return inner.mode.blankLine(inner.state); | ||||
} | ||||
function readToken(mode, stream, state, inner) { | ||||
for (var i = 0; i < 10; i++) { | ||||
if (inner) inner[0] = CodeMirror.innerMode(mode, state).mode; | ||||
var style = mode.token(stream, state); | ||||
if (stream.pos > stream.start) return style; | ||||
} | ||||
throw new Error("Mode " + mode.name + " failed to advance stream."); | ||||
} | ||||
// Utility for getTokenAt and getLineTokens | ||||
function takeToken(cm, pos, precise, asArray) { | ||||
function getObj(copy) { | ||||
return {start: stream.start, end: stream.pos, | ||||
string: stream.current(), | ||||
type: style || null, | ||||
state: copy ? copyState(doc.mode, state) : state}; | ||||
} | ||||
var doc = cm.doc, mode = doc.mode, style; | ||||
pos = clipPos(doc, pos); | ||||
var line = getLine(doc, pos.line), state = getStateBefore(cm, pos.line, precise); | ||||
var stream = new StringStream(line.text, cm.options.tabSize), tokens; | ||||
if (asArray) tokens = []; | ||||
while ((asArray || stream.pos < pos.ch) && !stream.eol()) { | ||||
stream.start = stream.pos; | ||||
style = readToken(mode, stream, state); | ||||
if (asArray) tokens.push(getObj(true)); | ||||
} | ||||
return asArray ? tokens : getObj(); | ||||
} | ||||
// Run the given mode's parser over a line, calling f for each token. | ||||
function runMode(cm, text, mode, state, f, lineClasses, forceToEnd) { | ||||
var flattenSpans = mode.flattenSpans; | ||||
if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; | ||||
var curStart = 0, curStyle = null; | ||||
var stream = new StringStream(text, cm.options.tabSize), style; | ||||
var inner = cm.options.addModeClass && [null]; | ||||
if (text == "") extractLineClasses(callBlankLine(mode, state), lineClasses); | ||||
while (!stream.eol()) { | ||||
if (stream.pos > cm.options.maxHighlightLength) { | ||||
flattenSpans = false; | ||||
if (forceToEnd) processLine(cm, text, state, stream.pos); | ||||
stream.pos = text.length; | ||||
style = null; | ||||
} else { | ||||
style = extractLineClasses(readToken(mode, stream, state, inner), lineClasses); | ||||
} | ||||
if (inner) { | ||||
var mName = inner[0].name; | ||||
if (mName) style = "m-" + (style ? mName + " " + style : mName); | ||||
} | ||||
if (!flattenSpans || curStyle != style) { | ||||
while (curStart < stream.start) { | ||||
curStart = Math.min(stream.start, curStart + 50000); | ||||
f(curStart, curStyle); | ||||
} | ||||
curStyle = style; | ||||
} | ||||
stream.start = stream.pos; | ||||
} | ||||
while (curStart < stream.pos) { | ||||
// Webkit seems to refuse to render text nodes longer than 57444 characters | ||||
var pos = Math.min(stream.pos, curStart + 50000); | ||||
f(pos, curStyle); | ||||
curStart = pos; | ||||
} | ||||
} | ||||
// Compute a style array (an array starting with a mode generation | ||||
// -- for invalidation -- followed by pairs of end positions and | ||||
// style strings), which is used to highlight the tokens on the | ||||
// line. | ||||
function highlightLine(cm, line, state, forceToEnd) { | ||||
// A styles array always starts with a number identifying the | ||||
// mode/overlays that it is based on (for easy invalidation). | ||||
var st = [cm.state.modeGen], lineClasses = {}; | ||||
// Compute the base array of styles | ||||
runMode(cm, line.text, cm.doc.mode, state, function(end, style) { | ||||
st.push(end, style); | ||||
}, lineClasses, forceToEnd); | ||||
// Run overlays, adjust style array. | ||||
for (var o = 0; o < cm.state.overlays.length; ++o) { | ||||
var overlay = cm.state.overlays[o], i = 1, at = 0; | ||||
runMode(cm, line.text, overlay.mode, true, function(end, style) { | ||||
var start = i; | ||||
// Ensure there's a token end at the current position, and that i points at it | ||||
while (at < end) { | ||||
var i_end = st[i]; | ||||
if (i_end > end) | ||||
st.splice(i, 1, end, st[i+1], i_end); | ||||
i += 2; | ||||
at = Math.min(end, i_end); | ||||
} | ||||
if (!style) return; | ||||
if (overlay.opaque) { | ||||
st.splice(start, i - start, end, "cm-overlay " + style); | ||||
i = start + 2; | ||||
} else { | ||||
for (; start < i; start += 2) { | ||||
var cur = st[start+1]; | ||||
st[start+1] = (cur ? cur + " " : "") + "cm-overlay " + style; | ||||
} | ||||
} | ||||
}, lineClasses); | ||||
} | ||||
return {styles: st, classes: lineClasses.bgClass || lineClasses.textClass ? lineClasses : null}; | ||||
} | ||||
function getLineStyles(cm, line, updateFrontier) { | ||||
if (!line.styles || line.styles[0] != cm.state.modeGen) { | ||||
var result = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); | ||||
line.styles = result.styles; | ||||
if (result.classes) line.styleClasses = result.classes; | ||||
else if (line.styleClasses) line.styleClasses = null; | ||||
if (updateFrontier === cm.doc.frontier) cm.doc.frontier++; | ||||
} | ||||
return line.styles; | ||||
} | ||||
// Lightweight form of highlight -- proceed over this line and | ||||
// update state, but don't save a style array. Used for lines that | ||||
// aren't currently visible. | ||||
function processLine(cm, text, state, startAt) { | ||||
var mode = cm.doc.mode; | ||||
var stream = new StringStream(text, cm.options.tabSize); | ||||
stream.start = stream.pos = startAt || 0; | ||||
if (text == "") callBlankLine(mode, state); | ||||
while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { | ||||
readToken(mode, stream, state); | ||||
stream.start = stream.pos; | ||||
} | ||||
} | ||||
// Convert a style as returned by a mode (either null, or a string | ||||
// containing one or more styles) to a CSS style. This is cached, | ||||
// and also looks for line-wide styles. | ||||
var styleToClassCache = {}, styleToClassCacheWithMode = {}; | ||||
function interpretTokenStyle(style, options) { | ||||
if (!style || /^\s*$/.test(style)) return null; | ||||
var cache = options.addModeClass ? styleToClassCacheWithMode : styleToClassCache; | ||||
return cache[style] || | ||||
(cache[style] = style.replace(/\S+/g, "cm-$&")); | ||||
} | ||||
// Render the DOM representation of the text of a line. Also builds | ||||
// up a 'line map', which points at the DOM nodes that represent | ||||
// specific stretches of text, and is used by the measuring code. | ||||
// The returned object contains the DOM node, this map, and | ||||
// information about line-wide styles that were set by the mode. | ||||
function buildLineContent(cm, lineView) { | ||||
// The padding-right forces the element to have a 'border', which | ||||
// is needed on Webkit to be able to get line-level bounding | ||||
// rectangles for it (in measureChar). | ||||
var content = elt("span", null, null, webkit ? "padding-right: .1px" : null); | ||||
var builder = {pre: elt("pre", [content]), content: content, | ||||
col: 0, pos: 0, cm: cm, | ||||
splitSpaces: (ie || webkit) && cm.getOption("lineWrapping")}; | ||||
lineView.measure = {}; | ||||
// Iterate over the logical lines that make up this visual line. | ||||
for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) { | ||||
var line = i ? lineView.rest[i - 1] : lineView.line, order; | ||||
builder.pos = 0; | ||||
builder.addToken = buildToken; | ||||
// Optionally wire in some hacks into the token-rendering | ||||
// algorithm, to deal with browser quirks. | ||||
if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line))) | ||||
builder.addToken = buildTokenBadBidi(builder.addToken, order); | ||||
builder.map = []; | ||||
var allowFrontierUpdate = lineView != cm.display.externalMeasured && lineNo(line); | ||||
insertLineContent(line, builder, getLineStyles(cm, line, allowFrontierUpdate)); | ||||
if (line.styleClasses) { | ||||
if (line.styleClasses.bgClass) | ||||
builder.bgClass = joinClasses(line.styleClasses.bgClass, builder.bgClass || ""); | ||||
if (line.styleClasses.textClass) | ||||
builder.textClass = joinClasses(line.styleClasses.textClass, builder.textClass || ""); | ||||
} | ||||
// Ensure at least a single node is present, for measuring. | ||||
if (builder.map.length == 0) | ||||
builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure))); | ||||
// Store the map and a cache object for the current logical line | ||||
if (i == 0) { | ||||
lineView.measure.map = builder.map; | ||||
lineView.measure.cache = {}; | ||||
} else { | ||||
(lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map); | ||||
(lineView.measure.caches || (lineView.measure.caches = [])).push({}); | ||||
} | ||||
} | ||||
// See issue #2901 | ||||
if (webkit && /\bcm-tab\b/.test(builder.content.lastChild.className)) | ||||
builder.content.className = "cm-tab-wrap-hack"; | ||||
signal(cm, "renderLine", cm, lineView.line, builder.pre); | ||||
if (builder.pre.className) | ||||
builder.textClass = joinClasses(builder.pre.className, builder.textClass || ""); | ||||
return builder; | ||||
} | ||||
function defaultSpecialCharPlaceholder(ch) { | ||||
var token = elt("span", "\u2022", "cm-invalidchar"); | ||||
token.title = "\\u" + ch.charCodeAt(0).toString(16); | ||||
token.setAttribute("aria-label", token.title); | ||||
return token; | ||||
} | ||||
// Build up the DOM representation for a single token, and add it to | ||||
// the line map. Takes care to render special characters separately. | ||||
function buildToken(builder, text, style, startStyle, endStyle, title, css) { | ||||
if (!text) return; | ||||
var displayText = builder.splitSpaces ? text.replace(/ {3,}/g, splitSpaces) : text; | ||||
var special = builder.cm.state.specialChars, mustWrap = false; | ||||
if (!special.test(text)) { | ||||
builder.col += text.length; | ||||
var content = document.createTextNode(displayText); | ||||
builder.map.push(builder.pos, builder.pos + text.length, content); | ||||
if (ie && ie_version < 9) mustWrap = true; | ||||
builder.pos += text.length; | ||||
} else { | ||||
var content = document.createDocumentFragment(), pos = 0; | ||||
while (true) { | ||||
special.lastIndex = pos; | ||||
var m = special.exec(text); | ||||
var skipped = m ? m.index - pos : text.length - pos; | ||||
if (skipped) { | ||||
var txt = document.createTextNode(displayText.slice(pos, pos + skipped)); | ||||
if (ie && ie_version < 9) content.appendChild(elt("span", [txt])); | ||||
else content.appendChild(txt); | ||||
builder.map.push(builder.pos, builder.pos + skipped, txt); | ||||
builder.col += skipped; | ||||
builder.pos += skipped; | ||||
} | ||||
if (!m) break; | ||||
pos += skipped + 1; | ||||
if (m[0] == "\t") { | ||||
var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; | ||||
var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); | ||||
txt.setAttribute("role", "presentation"); | ||||
txt.setAttribute("cm-text", "\t"); | ||||
builder.col += tabWidth; | ||||
} else { | ||||
var txt = builder.cm.options.specialCharPlaceholder(m[0]); | ||||
txt.setAttribute("cm-text", m[0]); | ||||
if (ie && ie_version < 9) content.appendChild(elt("span", [txt])); | ||||
else content.appendChild(txt); | ||||
builder.col += 1; | ||||
} | ||||
builder.map.push(builder.pos, builder.pos + 1, txt); | ||||
builder.pos++; | ||||
} | ||||
} | ||||
if (style || startStyle || endStyle || mustWrap || css) { | ||||
var fullStyle = style || ""; | ||||
if (startStyle) fullStyle += startStyle; | ||||
if (endStyle) fullStyle += endStyle; | ||||
var token = elt("span", [content], fullStyle, css); | ||||
if (title) token.title = title; | ||||
return builder.content.appendChild(token); | ||||
} | ||||
builder.content.appendChild(content); | ||||
} | ||||
function splitSpaces(old) { | ||||
var out = " "; | ||||
for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; | ||||
out += " "; | ||||
return out; | ||||
} | ||||
// Work around nonsense dimensions being reported for stretches of | ||||
// right-to-left text. | ||||
function buildTokenBadBidi(inner, order) { | ||||
return function(builder, text, style, startStyle, endStyle, title, css) { | ||||
style = style ? style + " cm-force-border" : "cm-force-border"; | ||||
var start = builder.pos, end = start + text.length; | ||||
for (;;) { | ||||
// Find the part that overlaps with the start of this text | ||||
for (var i = 0; i < order.length; i++) { | ||||
var part = order[i]; | ||||
if (part.to > start && part.from <= start) break; | ||||
} | ||||
if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title, css); | ||||
inner(builder, text.slice(0, part.to - start), style, startStyle, null, title, css); | ||||
startStyle = null; | ||||
text = text.slice(part.to - start); | ||||
start = part.to; | ||||
} | ||||
}; | ||||
} | ||||
function buildCollapsedSpan(builder, size, marker, ignoreWidget) { | ||||
var widget = !ignoreWidget && marker.widgetNode; | ||||
if (widget) builder.map.push(builder.pos, builder.pos + size, widget); | ||||
if (!ignoreWidget && builder.cm.display.input.needsContentAttribute) { | ||||
if (!widget) | ||||
widget = builder.content.appendChild(document.createElement("span")); | ||||
widget.setAttribute("cm-marker", marker.id); | ||||
} | ||||
if (widget) { | ||||
builder.cm.display.input.setUneditable(widget); | ||||
builder.content.appendChild(widget); | ||||
} | ||||
builder.pos += size; | ||||
} | ||||
// Outputs a number of spans to make up a line, taking highlighting | ||||
// and marked text into account. | ||||
function insertLineContent(line, builder, styles) { | ||||
var spans = line.markedSpans, allText = line.text, at = 0; | ||||
if (!spans) { | ||||
for (var i = 1; i < styles.length; i+=2) | ||||
builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder.cm.options)); | ||||
return; | ||||
} | ||||
var len = allText.length, pos = 0, i = 1, text = "", style, css; | ||||
var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; | ||||
for (;;) { | ||||
if (nextChange == pos) { // Update current marker set | ||||
spanStyle = spanEndStyle = spanStartStyle = title = css = ""; | ||||
collapsed = null; nextChange = Infinity; | ||||
var foundBookmarks = []; | ||||
for (var j = 0; j < spans.length; ++j) { | ||||
var sp = spans[j], m = sp.marker; | ||||
if (m.type == "bookmark" && sp.from == pos && m.widgetNode) { | ||||
foundBookmarks.push(m); | ||||
} else if (sp.from <= pos && (sp.to == null || sp.to > pos || m.collapsed && sp.to == pos && sp.from == pos)) { | ||||
if (sp.to != null && sp.to != pos && nextChange > sp.to) { | ||||
nextChange = sp.to; | ||||
spanEndStyle = ""; | ||||
} | ||||
if (m.className) spanStyle += " " + m.className; | ||||
if (m.css) css = m.css; | ||||
if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; | ||||
if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; | ||||
if (m.title && !title) title = m.title; | ||||
if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0)) | ||||
collapsed = sp; | ||||
} else if (sp.from > pos && nextChange > sp.from) { | ||||
nextChange = sp.from; | ||||
} | ||||
} | ||||
if (collapsed && (collapsed.from || 0) == pos) { | ||||
buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos, | ||||
collapsed.marker, collapsed.from == null); | ||||
if (collapsed.to == null) return; | ||||
if (collapsed.to == pos) collapsed = false; | ||||
} | ||||
if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j) | ||||
buildCollapsedSpan(builder, 0, foundBookmarks[j]); | ||||
} | ||||
if (pos >= len) break; | ||||
var upto = Math.min(len, nextChange); | ||||
while (true) { | ||||
if (text) { | ||||
var end = pos + text.length; | ||||
if (!collapsed) { | ||||
var tokenText = end > upto ? text.slice(0, upto - pos) : text; | ||||
builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle, | ||||
spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title, css); | ||||
} | ||||
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} | ||||
pos = end; | ||||
spanStartStyle = ""; | ||||
} | ||||
text = allText.slice(at, at = styles[i++]); | ||||
style = interpretTokenStyle(styles[i++], builder.cm.options); | ||||
} | ||||
} | ||||
} | ||||
// DOCUMENT DATA STRUCTURE | ||||
// By default, updates that start and end at the beginning of a line | ||||
// are treated specially, in order to make the association of line | ||||
// widgets and marker elements with the text behave more intuitive. | ||||
function isWholeLineUpdate(doc, change) { | ||||
return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" && | ||||
(!doc.cm || doc.cm.options.wholeLineUpdateBefore); | ||||
} | ||||
// Perform a change on the document data structure. | ||||
function updateDoc(doc, change, markedSpans, estimateHeight) { | ||||
function spansFor(n) {return markedSpans ? markedSpans[n] : null;} | ||||
function update(line, text, spans) { | ||||
updateLine(line, text, spans, estimateHeight); | ||||
signalLater(line, "change", line, change); | ||||
} | ||||
function linesFor(start, end) { | ||||
for (var i = start, result = []; i < end; ++i) | ||||
result.push(new Line(text[i], spansFor(i), estimateHeight)); | ||||
return result; | ||||
} | ||||
var from = change.from, to = change.to, text = change.text; | ||||
var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line); | ||||
var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line; | ||||
// Adjust the line structure | ||||
if (change.full) { | ||||
doc.insert(0, linesFor(0, text.length)); | ||||
doc.remove(text.length, doc.size - text.length); | ||||
} else if (isWholeLineUpdate(doc, change)) { | ||||
// This is a whole-line replace. Treated specially to make | ||||
// sure line objects move the way they are supposed to. | ||||
var added = linesFor(0, text.length - 1); | ||||
update(lastLine, lastLine.text, lastSpans); | ||||
if (nlines) doc.remove(from.line, nlines); | ||||
if (added.length) doc.insert(from.line, added); | ||||
} else if (firstLine == lastLine) { | ||||
if (text.length == 1) { | ||||
update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans); | ||||
} else { | ||||
var added = linesFor(1, text.length - 1); | ||||
added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); | ||||
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); | ||||
doc.insert(from.line + 1, added); | ||||
} | ||||
} else if (text.length == 1) { | ||||
update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0)); | ||||
doc.remove(from.line + 1, nlines); | ||||
} else { | ||||
update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0)); | ||||
update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans); | ||||
var added = linesFor(1, text.length - 1); | ||||
if (nlines > 1) doc.remove(from.line + 1, nlines - 1); | ||||
doc.insert(from.line + 1, added); | ||||
} | ||||
signalLater(doc, "change", doc, change); | ||||
} | ||||
// The document is represented as a BTree consisting of leaves, with | ||||
// chunk of lines in them, and branches, with up to ten leaves or | ||||
// other branch nodes below them. The top node is always a branch | ||||
// node, and is the document object itself (meaning it has | ||||
// additional methods and properties). | ||||
// | ||||
// All nodes have parent links. The tree is used both to go from | ||||
// line numbers to line objects, and to go from objects to numbers. | ||||
// It also indexes by height, and is used to convert between height | ||||
// and line object, and to find the total height of the document. | ||||
// | ||||
// See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html | ||||
function LeafChunk(lines) { | ||||
this.lines = lines; | ||||
this.parent = null; | ||||
for (var i = 0, height = 0; i < lines.length; ++i) { | ||||
lines[i].parent = this; | ||||
height += lines[i].height; | ||||
} | ||||
this.height = height; | ||||
} | ||||
LeafChunk.prototype = { | ||||
chunkSize: function() { return this.lines.length; }, | ||||
// Remove the n lines at offset 'at'. | ||||
removeInner: function(at, n) { | ||||
for (var i = at, e = at + n; i < e; ++i) { | ||||
var line = this.lines[i]; | ||||
this.height -= line.height; | ||||
cleanUpLine(line); | ||||
signalLater(line, "delete"); | ||||
} | ||||
this.lines.splice(at, n); | ||||
}, | ||||
// Helper used to collapse a small branch into a single leaf. | ||||
collapse: function(lines) { | ||||
lines.push.apply(lines, this.lines); | ||||
}, | ||||
// Insert the given array of lines at offset 'at', count them as | ||||
// having the given height. | ||||
insertInner: function(at, lines, height) { | ||||
this.height += height; | ||||
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); | ||||
for (var i = 0; i < lines.length; ++i) lines[i].parent = this; | ||||
}, | ||||
// Used to iterate over a part of the tree. | ||||
iterN: function(at, n, op) { | ||||
for (var e = at + n; at < e; ++at) | ||||
if (op(this.lines[at])) return true; | ||||
} | ||||
}; | ||||
function BranchChunk(children) { | ||||
this.children = children; | ||||
var size = 0, height = 0; | ||||
for (var i = 0; i < children.length; ++i) { | ||||
var ch = children[i]; | ||||
size += ch.chunkSize(); height += ch.height; | ||||
ch.parent = this; | ||||
} | ||||
this.size = size; | ||||
this.height = height; | ||||
this.parent = null; | ||||
} | ||||
BranchChunk.prototype = { | ||||
chunkSize: function() { return this.size; }, | ||||
removeInner: function(at, n) { | ||||
this.size -= n; | ||||
for (var i = 0; i < this.children.length; ++i) { | ||||
var child = this.children[i], sz = child.chunkSize(); | ||||
if (at < sz) { | ||||
var rm = Math.min(n, sz - at), oldHeight = child.height; | ||||
child.removeInner(at, rm); | ||||
this.height -= oldHeight - child.height; | ||||
if (sz == rm) { this.children.splice(i--, 1); child.parent = null; } | ||||
if ((n -= rm) == 0) break; | ||||
at = 0; | ||||
} else at -= sz; | ||||
} | ||||
// If the result is smaller than 25 lines, ensure that it is a | ||||
// single leaf node. | ||||
if (this.size - n < 25 && | ||||
(this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) { | ||||
var lines = []; | ||||
this.collapse(lines); | ||||
this.children = [new LeafChunk(lines)]; | ||||
this.children[0].parent = this; | ||||
} | ||||
}, | ||||
collapse: function(lines) { | ||||
for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines); | ||||
}, | ||||
insertInner: function(at, lines, height) { | ||||
this.size += lines.length; | ||||
this.height += height; | ||||
for (var i = 0; i < this.children.length; ++i) { | ||||
var child = this.children[i], sz = child.chunkSize(); | ||||
if (at <= sz) { | ||||
child.insertInner(at, lines, height); | ||||
if (child.lines && child.lines.length > 50) { | ||||
while (child.lines.length > 50) { | ||||
var spilled = child.lines.splice(child.lines.length - 25, 25); | ||||
var newleaf = new LeafChunk(spilled); | ||||
child.height -= newleaf.height; | ||||
this.children.splice(i + 1, 0, newleaf); | ||||
newleaf.parent = this; | ||||
} | ||||
this.maybeSpill(); | ||||
} | ||||
break; | ||||
} | ||||
at -= sz; | ||||
} | ||||
}, | ||||
// When a node has grown, check whether it should be split. | ||||
maybeSpill: function() { | ||||
if (this.children.length <= 10) return; | ||||
var me = this; | ||||
do { | ||||
var spilled = me.children.splice(me.children.length - 5, 5); | ||||
var sibling = new BranchChunk(spilled); | ||||
if (!me.parent) { // Become the parent node | ||||
var copy = new BranchChunk(me.children); | ||||
copy.parent = me; | ||||
me.children = [copy, sibling]; | ||||
me = copy; | ||||
} else { | ||||
me.size -= sibling.size; | ||||
me.height -= sibling.height; | ||||
var myIndex = indexOf(me.parent.children, me); | ||||
me.parent.children.splice(myIndex + 1, 0, sibling); | ||||
} | ||||
sibling.parent = me.parent; | ||||
} while (me.children.length > 10); | ||||
me.parent.maybeSpill(); | ||||
}, | ||||
iterN: function(at, n, op) { | ||||
for (var i = 0; i < this.children.length; ++i) { | ||||
var child = this.children[i], sz = child.chunkSize(); | ||||
if (at < sz) { | ||||
var used = Math.min(n, sz - at); | ||||
if (child.iterN(at, used, op)) return true; | ||||
if ((n -= used) == 0) break; | ||||
at = 0; | ||||
} else at -= sz; | ||||
} | ||||
} | ||||
}; | ||||
var nextDocId = 0; | ||||
var Doc = CodeMirror.Doc = function(text, mode, firstLine) { | ||||
if (!(this instanceof Doc)) return new Doc(text, mode, firstLine); | ||||
if (firstLine == null) firstLine = 0; | ||||
BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); | ||||
this.first = firstLine; | ||||
this.scrollTop = this.scrollLeft = 0; | ||||
this.cantEdit = false; | ||||
this.cleanGeneration = 1; | ||||
this.frontier = firstLine; | ||||
var start = Pos(firstLine, 0); | ||||
this.sel = simpleSelection(start); | ||||
this.history = new History(null); | ||||
this.id = ++nextDocId; | ||||
this.modeOption = mode; | ||||
if (typeof text == "string") text = splitLines(text); | ||||
updateDoc(this, {from: start, to: start, text: text}); | ||||
setSelection(this, simpleSelection(start), sel_dontScroll); | ||||
}; | ||||
Doc.prototype = createObj(BranchChunk.prototype, { | ||||
constructor: Doc, | ||||
// Iterate over the document. Supports two forms -- with only one | ||||
// argument, it calls that for each line in the document. With | ||||
// three, it iterates over the range given by the first two (with | ||||
// the second being non-inclusive). | ||||
iter: function(from, to, op) { | ||||
if (op) this.iterN(from - this.first, to - from, op); | ||||
else this.iterN(this.first, this.first + this.size, from); | ||||
}, | ||||
// Non-public interface for adding and removing lines. | ||||
insert: function(at, lines) { | ||||
var height = 0; | ||||
for (var i = 0; i < lines.length; ++i) height += lines[i].height; | ||||
this.insertInner(at - this.first, lines, height); | ||||
}, | ||||
remove: function(at, n) { this.removeInner(at - this.first, n); }, | ||||
// From here, the methods are part of the public interface. Most | ||||
// are also available from CodeMirror (editor) instances. | ||||
getValue: function(lineSep) { | ||||
var lines = getLines(this, this.first, this.first + this.size); | ||||
if (lineSep === false) return lines; | ||||
return lines.join(lineSep || "\n"); | ||||
}, | ||||
setValue: docMethodOp(function(code) { | ||||
var top = Pos(this.first, 0), last = this.first + this.size - 1; | ||||
makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length), | ||||
text: splitLines(code), origin: "setValue", full: true}, true); | ||||
setSelection(this, simpleSelection(top)); | ||||
}), | ||||
replaceRange: function(code, from, to, origin) { | ||||
from = clipPos(this, from); | ||||
to = to ? clipPos(this, to) : from; | ||||
replaceRange(this, code, from, to, origin); | ||||
}, | ||||
getRange: function(from, to, lineSep) { | ||||
var lines = getBetween(this, clipPos(this, from), clipPos(this, to)); | ||||
if (lineSep === false) return lines; | ||||
return lines.join(lineSep || "\n"); | ||||
}, | ||||
getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;}, | ||||
getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, | ||||
getLineNumber: function(line) {return lineNo(line);}, | ||||
getLineHandleVisualStart: function(line) { | ||||
if (typeof line == "number") line = getLine(this, line); | ||||
return visualLine(line); | ||||
}, | ||||
lineCount: function() {return this.size;}, | ||||
firstLine: function() {return this.first;}, | ||||
lastLine: function() {return this.first + this.size - 1;}, | ||||
clipPos: function(pos) {return clipPos(this, pos);}, | ||||
getCursor: function(start) { | ||||
var range = this.sel.primary(), pos; | ||||
if (start == null || start == "head") pos = range.head; | ||||
else if (start == "anchor") pos = range.anchor; | ||||
else if (start == "end" || start == "to" || start === false) pos = range.to(); | ||||
else pos = range.from(); | ||||
return pos; | ||||
}, | ||||
listSelections: function() { return this.sel.ranges; }, | ||||
somethingSelected: function() {return this.sel.somethingSelected();}, | ||||
setCursor: docMethodOp(function(line, ch, options) { | ||||
setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options); | ||||
}), | ||||
setSelection: docMethodOp(function(anchor, head, options) { | ||||
setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options); | ||||
}), | ||||
extendSelection: docMethodOp(function(head, other, options) { | ||||
extendSelection(this, clipPos(this, head), other && clipPos(this, other), options); | ||||
}), | ||||
extendSelections: docMethodOp(function(heads, options) { | ||||
extendSelections(this, clipPosArray(this, heads, options)); | ||||
}), | ||||
extendSelectionsBy: docMethodOp(function(f, options) { | ||||
extendSelections(this, map(this.sel.ranges, f), options); | ||||
}), | ||||
setSelections: docMethodOp(function(ranges, primary, options) { | ||||
if (!ranges.length) return; | ||||
for (var i = 0, out = []; i < ranges.length; i++) | ||||
out[i] = new Range(clipPos(this, ranges[i].anchor), | ||||
clipPos(this, ranges[i].head)); | ||||
if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex); | ||||
setSelection(this, normalizeSelection(out, primary), options); | ||||
}), | ||||
addSelection: docMethodOp(function(anchor, head, options) { | ||||
var ranges = this.sel.ranges.slice(0); | ||||
ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor))); | ||||
setSelection(this, normalizeSelection(ranges, ranges.length - 1), options); | ||||
}), | ||||
getSelection: function(lineSep) { | ||||
var ranges = this.sel.ranges, lines; | ||||
for (var i = 0; i < ranges.length; i++) { | ||||
var sel = getBetween(this, ranges[i].from(), ranges[i].to()); | ||||
lines = lines ? lines.concat(sel) : sel; | ||||
} | ||||
if (lineSep === false) return lines; | ||||
else return lines.join(lineSep || "\n"); | ||||
}, | ||||
getSelections: function(lineSep) { | ||||
var parts = [], ranges = this.sel.ranges; | ||||
for (var i = 0; i < ranges.length; i++) { | ||||
var sel = getBetween(this, ranges[i].from(), ranges[i].to()); | ||||
if (lineSep !== false) sel = sel.join(lineSep || "\n"); | ||||
parts[i] = sel; | ||||
} | ||||
return parts; | ||||
}, | ||||
replaceSelection: function(code, collapse, origin) { | ||||
var dup = []; | ||||
for (var i = 0; i < this.sel.ranges.length; i++) | ||||
dup[i] = code; | ||||
this.replaceSelections(dup, collapse, origin || "+input"); | ||||
}, | ||||
replaceSelections: docMethodOp(function(code, collapse, origin) { | ||||
var changes = [], sel = this.sel; | ||||
for (var i = 0; i < sel.ranges.length; i++) { | ||||
var range = sel.ranges[i]; | ||||
changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin}; | ||||
} | ||||
var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse); | ||||
for (var i = changes.length - 1; i >= 0; i--) | ||||
makeChange(this, changes[i]); | ||||
if (newSel) setSelectionReplaceHistory(this, newSel); | ||||
else if (this.cm) ensureCursorVisible(this.cm); | ||||
}), | ||||
undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}), | ||||
redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}), | ||||
undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}), | ||||
redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}), | ||||
setExtending: function(val) {this.extend = val;}, | ||||
getExtending: function() {return this.extend;}, | ||||
historySize: function() { | ||||
var hist = this.history, done = 0, undone = 0; | ||||
for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done; | ||||
for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone; | ||||
return {undo: done, redo: undone}; | ||||
}, | ||||
clearHistory: function() {this.history = new History(this.history.maxGeneration);}, | ||||
markClean: function() { | ||||
this.cleanGeneration = this.changeGeneration(true); | ||||
}, | ||||
changeGeneration: function(forceSplit) { | ||||
if (forceSplit) | ||||
this.history.lastOp = this.history.lastSelOp = this.history.lastOrigin = null; | ||||
return this.history.generation; | ||||
}, | ||||
isClean: function (gen) { | ||||
return this.history.generation == (gen || this.cleanGeneration); | ||||
}, | ||||
getHistory: function() { | ||||
return {done: copyHistoryArray(this.history.done), | ||||
undone: copyHistoryArray(this.history.undone)}; | ||||
}, | ||||
setHistory: function(histData) { | ||||
var hist = this.history = new History(this.history.maxGeneration); | ||||
hist.done = copyHistoryArray(histData.done.slice(0), null, true); | ||||
hist.undone = copyHistoryArray(histData.undone.slice(0), null, true); | ||||
}, | ||||
addLineClass: docMethodOp(function(handle, where, cls) { | ||||
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) { | ||||
var prop = where == "text" ? "textClass" | ||||
: where == "background" ? "bgClass" | ||||
: where == "gutter" ? "gutterClass" : "wrapClass"; | ||||
if (!line[prop]) line[prop] = cls; | ||||
else if (classTest(cls).test(line[prop])) return false; | ||||
else line[prop] += " " + cls; | ||||
return true; | ||||
}); | ||||
}), | ||||
removeLineClass: docMethodOp(function(handle, where, cls) { | ||||
return changeLine(this, handle, where == "gutter" ? "gutter" : "class", function(line) { | ||||
var prop = where == "text" ? "textClass" | ||||
: where == "background" ? "bgClass" | ||||
: where == "gutter" ? "gutterClass" : "wrapClass"; | ||||
var cur = line[prop]; | ||||
if (!cur) return false; | ||||
else if (cls == null) line[prop] = null; | ||||
else { | ||||
var found = cur.match(classTest(cls)); | ||||
if (!found) return false; | ||||
var end = found.index + found[0].length; | ||||
line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null; | ||||
} | ||||
return true; | ||||
}); | ||||
}), | ||||
addLineWidget: docMethodOp(function(handle, node, options) { | ||||
return addLineWidget(this, handle, node, options); | ||||
}), | ||||
removeLineWidget: function(widget) { widget.clear(); }, | ||||
markText: function(from, to, options) { | ||||
return markText(this, clipPos(this, from), clipPos(this, to), options, "range"); | ||||
}, | ||||
setBookmark: function(pos, options) { | ||||
var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options), | ||||
insertLeft: options && options.insertLeft, | ||||
clearWhenEmpty: false, shared: options && options.shared, | ||||
handleMouseEvents: options && options.handleMouseEvents}; | ||||
pos = clipPos(this, pos); | ||||
return markText(this, pos, pos, realOpts, "bookmark"); | ||||
}, | ||||
findMarksAt: function(pos) { | ||||
pos = clipPos(this, pos); | ||||
var markers = [], spans = getLine(this, pos.line).markedSpans; | ||||
if (spans) for (var i = 0; i < spans.length; ++i) { | ||||
var span = spans[i]; | ||||
if ((span.from == null || span.from <= pos.ch) && | ||||
(span.to == null || span.to >= pos.ch)) | ||||
markers.push(span.marker.parent || span.marker); | ||||
} | ||||
return markers; | ||||
}, | ||||
findMarks: function(from, to, filter) { | ||||
from = clipPos(this, from); to = clipPos(this, to); | ||||
var found = [], lineNo = from.line; | ||||
this.iter(from.line, to.line + 1, function(line) { | ||||
var spans = line.markedSpans; | ||||
if (spans) for (var i = 0; i < spans.length; i++) { | ||||
var span = spans[i]; | ||||
if (!(lineNo == from.line && from.ch > span.to || | ||||
span.from == null && lineNo != from.line|| | ||||
lineNo == to.line && span.from > to.ch) && | ||||
(!filter || filter(span.marker))) | ||||
found.push(span.marker.parent || span.marker); | ||||
} | ||||
++lineNo; | ||||
}); | ||||
return found; | ||||
}, | ||||
getAllMarks: function() { | ||||
var markers = []; | ||||
this.iter(function(line) { | ||||
var sps = line.markedSpans; | ||||
if (sps) for (var i = 0; i < sps.length; ++i) | ||||
if (sps[i].from != null) markers.push(sps[i].marker); | ||||
}); | ||||
return markers; | ||||
}, | ||||
posFromIndex: function(off) { | ||||
var ch, lineNo = this.first; | ||||
this.iter(function(line) { | ||||
var sz = line.text.length + 1; | ||||
if (sz > off) { ch = off; return true; } | ||||
off -= sz; | ||||
++lineNo; | ||||
}); | ||||
return clipPos(this, Pos(lineNo, ch)); | ||||
}, | ||||
indexFromPos: function (coords) { | ||||
coords = clipPos(this, coords); | ||||
var index = coords.ch; | ||||
if (coords.line < this.first || coords.ch < 0) return 0; | ||||
this.iter(this.first, coords.line, function (line) { | ||||
index += line.text.length + 1; | ||||
}); | ||||
return index; | ||||
}, | ||||
copy: function(copyHistory) { | ||||
var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first); | ||||
doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft; | ||||
doc.sel = this.sel; | ||||
doc.extend = false; | ||||
if (copyHistory) { | ||||
doc.history.undoDepth = this.history.undoDepth; | ||||
doc.setHistory(this.getHistory()); | ||||
} | ||||
return doc; | ||||
}, | ||||
linkedDoc: function(options) { | ||||
if (!options) options = {}; | ||||
var from = this.first, to = this.first + this.size; | ||||
if (options.from != null && options.from > from) from = options.from; | ||||
if (options.to != null && options.to < to) to = options.to; | ||||
var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from); | ||||
if (options.sharedHist) copy.history = this.history; | ||||
(this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist}); | ||||
copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}]; | ||||
copySharedMarkers(copy, findSharedMarkers(this)); | ||||
return copy; | ||||
}, | ||||
unlinkDoc: function(other) { | ||||
if (other instanceof CodeMirror) other = other.doc; | ||||
if (this.linked) for (var i = 0; i < this.linked.length; ++i) { | ||||
var link = this.linked[i]; | ||||
if (link.doc != other) continue; | ||||
this.linked.splice(i, 1); | ||||
other.unlinkDoc(this); | ||||
detachSharedMarkers(findSharedMarkers(this)); | ||||
break; | ||||
} | ||||
// If the histories were shared, split them again | ||||
if (other.history == this.history) { | ||||
var splitIds = [other.id]; | ||||
linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true); | ||||
other.history = new History(null); | ||||
other.history.done = copyHistoryArray(this.history.done, splitIds); | ||||
other.history.undone = copyHistoryArray(this.history.undone, splitIds); | ||||
} | ||||
}, | ||||
iterLinkedDocs: function(f) {linkedDocs(this, f);}, | ||||
getMode: function() {return this.mode;}, | ||||
getEditor: function() {return this.cm;} | ||||
}); | ||||
// Public alias. | ||||
Doc.prototype.eachLine = Doc.prototype.iter; | ||||
// Set up methods on CodeMirror's prototype to redirect to the editor's document. | ||||
var dontDelegate = "iter insert remove copy getEditor constructor".split(" "); | ||||
for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0) | ||||
CodeMirror.prototype[prop] = (function(method) { | ||||
return function() {return method.apply(this.doc, arguments);}; | ||||
})(Doc.prototype[prop]); | ||||
eventMixin(Doc); | ||||
// Call f for all linked documents. | ||||
function linkedDocs(doc, f, sharedHistOnly) { | ||||
function propagate(doc, skip, sharedHist) { | ||||
if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) { | ||||
var rel = doc.linked[i]; | ||||
if (rel.doc == skip) continue; | ||||
var shared = sharedHist && rel.sharedHist; | ||||
if (sharedHistOnly && !shared) continue; | ||||
f(rel.doc, shared); | ||||
propagate(rel.doc, doc, shared); | ||||
} | ||||
} | ||||
propagate(doc, null, true); | ||||
} | ||||
// Attach a document to an editor. | ||||
function attachDoc(cm, doc) { | ||||
if (doc.cm) throw new Error("This document is already in use."); | ||||
cm.doc = doc; | ||||
doc.cm = cm; | ||||
estimateLineHeights(cm); | ||||
loadMode(cm); | ||||
if (!cm.options.lineWrapping) findMaxLine(cm); | ||||
cm.options.mode = doc.modeOption; | ||||
regChange(cm); | ||||
} | ||||
// LINE UTILITIES | ||||
// Find the line object corresponding to the given line number. | ||||
function getLine(doc, n) { | ||||
n -= doc.first; | ||||
if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document."); | ||||
for (var chunk = doc; !chunk.lines;) { | ||||
for (var i = 0;; ++i) { | ||||
var child = chunk.children[i], sz = child.chunkSize(); | ||||
if (n < sz) { chunk = child; break; } | ||||
n -= sz; | ||||
} | ||||
} | ||||
return chunk.lines[n]; | ||||
} | ||||
// Get the part of a document between two positions, as an array of | ||||
// strings. | ||||
function getBetween(doc, start, end) { | ||||
var out = [], n = start.line; | ||||
doc.iter(start.line, end.line + 1, function(line) { | ||||
var text = line.text; | ||||
if (n == end.line) text = text.slice(0, end.ch); | ||||
if (n == start.line) text = text.slice(start.ch); | ||||
out.push(text); | ||||
++n; | ||||
}); | ||||
return out; | ||||
} | ||||
// Get the lines between from and to, as array of strings. | ||||
function getLines(doc, from, to) { | ||||
var out = []; | ||||
doc.iter(from, to, function(line) { out.push(line.text); }); | ||||
return out; | ||||
} | ||||
// Update the height of a line, propagating the height change | ||||
// upwards to parent nodes. | ||||
function updateLineHeight(line, height) { | ||||
var diff = height - line.height; | ||||
if (diff) for (var n = line; n; n = n.parent) n.height += diff; | ||||
} | ||||
// Given a line object, find its line number by walking up through | ||||
// its parent links. | ||||
function lineNo(line) { | ||||
if (line.parent == null) return null; | ||||
var cur = line.parent, no = indexOf(cur.lines, line); | ||||
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) { | ||||
for (var i = 0;; ++i) { | ||||
if (chunk.children[i] == cur) break; | ||||
no += chunk.children[i].chunkSize(); | ||||
} | ||||
} | ||||
return no + cur.first; | ||||
} | ||||
// Find the line at the given vertical position, using the height | ||||
// information in the document tree. | ||||
function lineAtHeight(chunk, h) { | ||||
var n = chunk.first; | ||||
outer: do { | ||||
for (var i = 0; i < chunk.children.length; ++i) { | ||||
var child = chunk.children[i], ch = child.height; | ||||
if (h < ch) { chunk = child; continue outer; } | ||||
h -= ch; | ||||
n += child.chunkSize(); | ||||
} | ||||
return n; | ||||
} while (!chunk.lines); | ||||
for (var i = 0; i < chunk.lines.length; ++i) { | ||||
var line = chunk.lines[i], lh = line.height; | ||||
if (h < lh) break; | ||||
h -= lh; | ||||
} | ||||
return n + i; | ||||
} | ||||
// Find the height above the given line. | ||||
function heightAtLine(lineObj) { | ||||
lineObj = visualLine(lineObj); | ||||
var h = 0, chunk = lineObj.parent; | ||||
for (var i = 0; i < chunk.lines.length; ++i) { | ||||
var line = chunk.lines[i]; | ||||
if (line == lineObj) break; | ||||
else h += line.height; | ||||
} | ||||
for (var p = chunk.parent; p; chunk = p, p = chunk.parent) { | ||||
for (var i = 0; i < p.children.length; ++i) { | ||||
var cur = p.children[i]; | ||||
if (cur == chunk) break; | ||||
else h += cur.height; | ||||
} | ||||
} | ||||
return h; | ||||
} | ||||
// Get the bidi ordering for the given line (and cache it). Returns | ||||
// false for lines that are fully left-to-right, and an array of | ||||
// BidiSpan objects otherwise. | ||||
function getOrder(line) { | ||||
var order = line.order; | ||||
if (order == null) order = line.order = bidiOrdering(line.text); | ||||
return order; | ||||
} | ||||
// HISTORY | ||||
function History(startGen) { | ||||
// Arrays of change events and selections. Doing something adds an | ||||
// event to done and clears undo. Undoing moves events from done | ||||
// to undone, redoing moves them in the other direction. | ||||
this.done = []; this.undone = []; | ||||
this.undoDepth = Infinity; | ||||
// Used to track when changes can be merged into a single undo | ||||
// event | ||||
this.lastModTime = this.lastSelTime = 0; | ||||
this.lastOp = this.lastSelOp = null; | ||||
this.lastOrigin = this.lastSelOrigin = null; | ||||
// Used by the isClean() method | ||||
this.generation = this.maxGeneration = startGen || 1; | ||||
} | ||||
// Create a history change event from an updateDoc-style change | ||||
// object. | ||||
function historyChangeFromChange(doc, change) { | ||||
var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; | ||||
attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1); | ||||
linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true); | ||||
return histChange; | ||||
} | ||||
// Pop all selection events off the end of a history array. Stop at | ||||
// a change event. | ||||
function clearSelectionEvents(array) { | ||||
while (array.length) { | ||||
var last = lst(array); | ||||
if (last.ranges) array.pop(); | ||||
else break; | ||||
} | ||||
} | ||||
// Find the top change event in the history. Pop off selection | ||||
// events that are in the way. | ||||
function lastChangeEvent(hist, force) { | ||||
if (force) { | ||||
clearSelectionEvents(hist.done); | ||||
return lst(hist.done); | ||||
} else if (hist.done.length && !lst(hist.done).ranges) { | ||||
return lst(hist.done); | ||||
} else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) { | ||||
hist.done.pop(); | ||||
return lst(hist.done); | ||||
} | ||||
} | ||||
// Register a change in the history. Merges changes that are within | ||||
// a single operation, ore are close together with an origin that | ||||
// allows merging (starting with "+") into a single event. | ||||
function addChangeToHistory(doc, change, selAfter, opId) { | ||||
var hist = doc.history; | ||||
hist.undone.length = 0; | ||||
var time = +new Date, cur; | ||||
if ((hist.lastOp == opId || | ||||
hist.lastOrigin == change.origin && change.origin && | ||||
((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) || | ||||
change.origin.charAt(0) == "*")) && | ||||
(cur = lastChangeEvent(hist, hist.lastOp == opId))) { | ||||
// Merge this change into the last event | ||||
var last = lst(cur.changes); | ||||
if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) { | ||||
// Optimized case for simple insertion -- don't want to add | ||||
// new changesets for every character typed | ||||
last.to = changeEnd(change); | ||||
} else { | ||||
// Add new sub-event | ||||
cur.changes.push(historyChangeFromChange(doc, change)); | ||||
} | ||||
} else { | ||||
// Can not be merged, start a new event. | ||||
var before = lst(hist.done); | ||||
if (!before || !before.ranges) | ||||
pushSelectionToHistory(doc.sel, hist.done); | ||||
cur = {changes: [historyChangeFromChange(doc, change)], | ||||
generation: hist.generation}; | ||||
hist.done.push(cur); | ||||
while (hist.done.length > hist.undoDepth) { | ||||
hist.done.shift(); | ||||
if (!hist.done[0].ranges) hist.done.shift(); | ||||
} | ||||
} | ||||
hist.done.push(selAfter); | ||||
hist.generation = ++hist.maxGeneration; | ||||
hist.lastModTime = hist.lastSelTime = time; | ||||
hist.lastOp = hist.lastSelOp = opId; | ||||
hist.lastOrigin = hist.lastSelOrigin = change.origin; | ||||
if (!last) signal(doc, "historyAdded"); | ||||
} | ||||
function selectionEventCanBeMerged(doc, origin, prev, sel) { | ||||
var ch = origin.charAt(0); | ||||
return ch == "*" || | ||||
ch == "+" && | ||||
prev.ranges.length == sel.ranges.length && | ||||
prev.somethingSelected() == sel.somethingSelected() && | ||||
new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500); | ||||
} | ||||
// Called whenever the selection changes, sets the new selection as | ||||
// the pending selection in the history, and pushes the old pending | ||||
// selection into the 'done' array when it was significantly | ||||
// different (in number of selected ranges, emptiness, or time). | ||||
function addSelectionToHistory(doc, sel, opId, options) { | ||||
var hist = doc.history, origin = options && options.origin; | ||||
// A new event is started when the previous origin does not match | ||||
// the current, or the origins don't allow matching. Origins | ||||
// starting with * are always merged, those starting with + are | ||||
// merged when similar and close together in time. | ||||
if (opId == hist.lastSelOp || | ||||
(origin && hist.lastSelOrigin == origin && | ||||
(hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin || | ||||
selectionEventCanBeMerged(doc, origin, lst(hist.done), sel)))) | ||||
hist.done[hist.done.length - 1] = sel; | ||||
else | ||||
pushSelectionToHistory(sel, hist.done); | ||||
hist.lastSelTime = +new Date; | ||||
hist.lastSelOrigin = origin; | ||||
hist.lastSelOp = opId; | ||||
if (options && options.clearRedo !== false) | ||||
clearSelectionEvents(hist.undone); | ||||
} | ||||
function pushSelectionToHistory(sel, dest) { | ||||
var top = lst(dest); | ||||
if (!(top && top.ranges && top.equals(sel))) | ||||
dest.push(sel); | ||||
} | ||||
// Used to store marked span information in the history. | ||||
function attachLocalSpans(doc, change, from, to) { | ||||
var existing = change["spans_" + doc.id], n = 0; | ||||
doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) { | ||||
if (line.markedSpans) | ||||
(existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans; | ||||
++n; | ||||
}); | ||||
} | ||||
// When un/re-doing restores text containing marked spans, those | ||||
// that have been explicitly cleared should not be restored. | ||||
function removeClearedSpans(spans) { | ||||
if (!spans) return null; | ||||
for (var i = 0, out; i < spans.length; ++i) { | ||||
if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); } | ||||
else if (out) out.push(spans[i]); | ||||
} | ||||
return !out ? spans : out.length ? out : null; | ||||
} | ||||
// Retrieve and filter the old marked spans stored in a change event. | ||||
function getOldSpans(doc, change) { | ||||
var found = change["spans_" + doc.id]; | ||||
if (!found) return null; | ||||
for (var i = 0, nw = []; i < change.text.length; ++i) | ||||
nw.push(removeClearedSpans(found[i])); | ||||
return nw; | ||||
} | ||||
// Used both to provide a JSON-safe object in .getHistory, and, when | ||||
// detaching a document, to split the history in two | ||||
function copyHistoryArray(events, newGroup, instantiateSel) { | ||||
for (var i = 0, copy = []; i < events.length; ++i) { | ||||
var event = events[i]; | ||||
if (event.ranges) { | ||||
copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event); | ||||
continue; | ||||
} | ||||
var changes = event.changes, newChanges = []; | ||||
copy.push({changes: newChanges}); | ||||
for (var j = 0; j < changes.length; ++j) { | ||||
var change = changes[j], m; | ||||
newChanges.push({from: change.from, to: change.to, text: change.text}); | ||||
if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) { | ||||
if (indexOf(newGroup, Number(m[1])) > -1) { | ||||
lst(newChanges)[prop] = change[prop]; | ||||
delete change[prop]; | ||||
} | ||||
} | ||||
} | ||||
} | ||||
return copy; | ||||
} | ||||
// Rebasing/resetting history to deal with externally-sourced changes | ||||
function rebaseHistSelSingle(pos, from, to, diff) { | ||||
if (to < pos.line) { | ||||
pos.line += diff; | ||||
} else if (from < pos.line) { | ||||
pos.line = from; | ||||
pos.ch = 0; | ||||
} | ||||
} | ||||
// Tries to rebase an array of history events given a change in the | ||||
// document. If the change touches the same lines as the event, the | ||||
// event, and everything 'behind' it, is discarded. If the change is | ||||
// before the event, the event's positions are updated. Uses a | ||||
// copy-on-write scheme for the positions, to avoid having to | ||||
// reallocate them all on every rebase, but also avoid problems with | ||||
// shared position objects being unsafely updated. | ||||
function rebaseHistArray(array, from, to, diff) { | ||||
for (var i = 0; i < array.length; ++i) { | ||||
var sub = array[i], ok = true; | ||||
if (sub.ranges) { | ||||
if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; } | ||||
for (var j = 0; j < sub.ranges.length; j++) { | ||||
rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff); | ||||
rebaseHistSelSingle(sub.ranges[j].head, from, to, diff); | ||||
} | ||||
continue; | ||||
} | ||||
for (var j = 0; j < sub.changes.length; ++j) { | ||||
var cur = sub.changes[j]; | ||||
if (to < cur.from.line) { | ||||
cur.from = Pos(cur.from.line + diff, cur.from.ch); | ||||
cur.to = Pos(cur.to.line + diff, cur.to.ch); | ||||
} else if (from <= cur.to.line) { | ||||
ok = false; | ||||
break; | ||||
} | ||||
} | ||||
if (!ok) { | ||||
array.splice(0, i + 1); | ||||
i = 0; | ||||
} | ||||
} | ||||
} | ||||
function rebaseHist(hist, change) { | ||||
var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1; | ||||
rebaseHistArray(hist.done, from, to, diff); | ||||
rebaseHistArray(hist.undone, from, to, diff); | ||||
} | ||||
// EVENT UTILITIES | ||||
// Due to the fact that we still support jurassic IE versions, some | ||||
// compatibility wrappers are needed. | ||||
var e_preventDefault = CodeMirror.e_preventDefault = function(e) { | ||||
if (e.preventDefault) e.preventDefault(); | ||||
else e.returnValue = false; | ||||
}; | ||||
var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) { | ||||
if (e.stopPropagation) e.stopPropagation(); | ||||
else e.cancelBubble = true; | ||||
}; | ||||
function e_defaultPrevented(e) { | ||||
return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; | ||||
} | ||||
var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);}; | ||||
function e_target(e) {return e.target || e.srcElement;} | ||||
function e_button(e) { | ||||
var b = e.which; | ||||
if (b == null) { | ||||
if (e.button & 1) b = 1; | ||||
else if (e.button & 2) b = 3; | ||||
else if (e.button & 4) b = 2; | ||||
} | ||||
if (mac && e.ctrlKey && b == 1) b = 3; | ||||
return b; | ||||
} | ||||
// EVENT HANDLING | ||||
// Lightweight event framework. on/off also work on DOM nodes, | ||||
// registering native DOM handlers. | ||||
var on = CodeMirror.on = function(emitter, type, f) { | ||||
if (emitter.addEventListener) | ||||
emitter.addEventListener(type, f, false); | ||||
else if (emitter.attachEvent) | ||||
emitter.attachEvent("on" + type, f); | ||||
else { | ||||
var map = emitter._handlers || (emitter._handlers = {}); | ||||
var arr = map[type] || (map[type] = []); | ||||
arr.push(f); | ||||
} | ||||
}; | ||||
var off = CodeMirror.off = function(emitter, type, f) { | ||||
if (emitter.removeEventListener) | ||||
emitter.removeEventListener(type, f, false); | ||||
else if (emitter.detachEvent) | ||||
emitter.detachEvent("on" + type, f); | ||||
else { | ||||
var arr = emitter._handlers && emitter._handlers[type]; | ||||
if (!arr) return; | ||||
for (var i = 0; i < arr.length; ++i) | ||||
if (arr[i] == f) { arr.splice(i, 1); break; } | ||||
} | ||||
}; | ||||
var signal = CodeMirror.signal = function(emitter, type /*, values...*/) { | ||||
var arr = emitter._handlers && emitter._handlers[type]; | ||||
if (!arr) return; | ||||
var args = Array.prototype.slice.call(arguments, 2); | ||||
for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args); | ||||
}; | ||||
var orphanDelayedCallbacks = null; | ||||
// Often, we want to signal events at a point where we are in the | ||||
// middle of some work, but don't want the handler to start calling | ||||
// other methods on the editor, which might be in an inconsistent | ||||
// state or simply not expect any other events to happen. | ||||
// signalLater looks whether there are any handlers, and schedules | ||||
// them to be executed when the last operation ends, or, if no | ||||
// operation is active, when a timeout fires. | ||||
function signalLater(emitter, type /*, values...*/) { | ||||
var arr = emitter._handlers && emitter._handlers[type]; | ||||
if (!arr) return; | ||||
var args = Array.prototype.slice.call(arguments, 2), list; | ||||
if (operationGroup) { | ||||
list = operationGroup.delayedCallbacks; | ||||
} else if (orphanDelayedCallbacks) { | ||||
list = orphanDelayedCallbacks; | ||||
} else { | ||||
list = orphanDelayedCallbacks = []; | ||||
setTimeout(fireOrphanDelayed, 0); | ||||
} | ||||
function bnd(f) {return function(){f.apply(null, args);};}; | ||||
for (var i = 0; i < arr.length; ++i) | ||||
list.push(bnd(arr[i])); | ||||
} | ||||
function fireOrphanDelayed() { | ||||
var delayed = orphanDelayedCallbacks; | ||||
orphanDelayedCallbacks = null; | ||||
for (var i = 0; i < delayed.length; ++i) delayed[i](); | ||||
} | ||||
// The DOM events that CodeMirror handles can be overridden by | ||||
// registering a (non-DOM) handler on the editor for the event name, | ||||
// and preventDefault-ing the event in that handler. | ||||
function signalDOMEvent(cm, e, override) { | ||||
if (typeof e == "string") | ||||
e = {type: e, preventDefault: function() { this.defaultPrevented = true; }}; | ||||
signal(cm, override || e.type, cm, e); | ||||
return e_defaultPrevented(e) || e.codemirrorIgnore; | ||||
} | ||||
function signalCursorActivity(cm) { | ||||
var arr = cm._handlers && cm._handlers.cursorActivity; | ||||
if (!arr) return; | ||||
var set = cm.curOp.cursorActivityHandlers || (cm.curOp.cursorActivityHandlers = []); | ||||
for (var i = 0; i < arr.length; ++i) if (indexOf(set, arr[i]) == -1) | ||||
set.push(arr[i]); | ||||
} | ||||
function hasHandler(emitter, type) { | ||||
var arr = emitter._handlers && emitter._handlers[type]; | ||||
return arr && arr.length > 0; | ||||
} | ||||
// Add on and off methods to a constructor's prototype, to make | ||||
// registering events on such objects more convenient. | ||||
function eventMixin(ctor) { | ||||
ctor.prototype.on = function(type, f) {on(this, type, f);}; | ||||
ctor.prototype.off = function(type, f) {off(this, type, f);}; | ||||
} | ||||
// MISC UTILITIES | ||||
// Number of pixels added to scroller and sizer to hide scrollbar | ||||
var scrollerGap = 30; | ||||
// Returned or thrown by various protocols to signal 'I'm not | ||||
// handling this'. | ||||
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; | ||||
// Reused option objects for setSelection & friends | ||||
var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"}; | ||||
function Delayed() {this.id = null;} | ||||
Delayed.prototype.set = function(ms, f) { | ||||
clearTimeout(this.id); | ||||
this.id = setTimeout(f, ms); | ||||
}; | ||||
// Counts the column offset in a string, taking tabs into account. | ||||
// Used mostly to find indentation. | ||||
var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) { | ||||
if (end == null) { | ||||
end = string.search(/[^\s\u00a0]/); | ||||
if (end == -1) end = string.length; | ||||
} | ||||
for (var i = startIndex || 0, n = startValue || 0;;) { | ||||
var nextTab = string.indexOf("\t", i); | ||||
if (nextTab < 0 || nextTab >= end) | ||||
return n + (end - i); | ||||
n += nextTab - i; | ||||
n += tabSize - (n % tabSize); | ||||
i = nextTab + 1; | ||||
} | ||||
}; | ||||
// The inverse of countColumn -- find the offset that corresponds to | ||||
// a particular column. | ||||
function findColumn(string, goal, tabSize) { | ||||
for (var pos = 0, col = 0;;) { | ||||
var nextTab = string.indexOf("\t", pos); | ||||
if (nextTab == -1) nextTab = string.length; | ||||
var skipped = nextTab - pos; | ||||
if (nextTab == string.length || col + skipped >= goal) | ||||
return pos + Math.min(skipped, goal - col); | ||||
col += nextTab - pos; | ||||
col += tabSize - (col % tabSize); | ||||
pos = nextTab + 1; | ||||
if (col >= goal) return pos; | ||||
} | ||||
} | ||||
var spaceStrs = [""]; | ||||
function spaceStr(n) { | ||||
while (spaceStrs.length <= n) | ||||
spaceStrs.push(lst(spaceStrs) + " "); | ||||
return spaceStrs[n]; | ||||
} | ||||
function lst(arr) { return arr[arr.length-1]; } | ||||
var selectInput = function(node) { node.select(); }; | ||||
if (ios) // Mobile Safari apparently has a bug where select() is broken. | ||||
selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; }; | ||||
else if (ie) // Suppress mysterious IE10 errors | ||||
selectInput = function(node) { try { node.select(); } catch(_e) {} }; | ||||
function indexOf(array, elt) { | ||||
for (var i = 0; i < array.length; ++i) | ||||
if (array[i] == elt) return i; | ||||
return -1; | ||||
} | ||||
function map(array, f) { | ||||
var out = []; | ||||
for (var i = 0; i < array.length; i++) out[i] = f(array[i], i); | ||||
return out; | ||||
} | ||||
function nothing() {} | ||||
function createObj(base, props) { | ||||
var inst; | ||||
if (Object.create) { | ||||
inst = Object.create(base); | ||||
} else { | ||||
nothing.prototype = base; | ||||
inst = new nothing(); | ||||
} | ||||
if (props) copyObj(props, inst); | ||||
return inst; | ||||
}; | ||||
function copyObj(obj, target, overwrite) { | ||||
if (!target) target = {}; | ||||
for (var prop in obj) | ||||
if (obj.hasOwnProperty(prop) && (overwrite !== false || !target.hasOwnProperty(prop))) | ||||
target[prop] = obj[prop]; | ||||
return target; | ||||
} | ||||
function bind(f) { | ||||
var args = Array.prototype.slice.call(arguments, 1); | ||||
return function(){return f.apply(null, args);}; | ||||
} | ||||
var nonASCIISingleCaseWordChar = /[\u00df\u0587\u0590-\u05f4\u0600-\u06ff\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; | ||||
var isWordCharBasic = CodeMirror.isWordChar = function(ch) { | ||||
return /\w/.test(ch) || ch > "\x80" && | ||||
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); | ||||
}; | ||||
function isWordChar(ch, helper) { | ||||
if (!helper) return isWordCharBasic(ch); | ||||
if (helper.source.indexOf("\\w") > -1 && isWordCharBasic(ch)) return true; | ||||
return helper.test(ch); | ||||
} | ||||
function isEmpty(obj) { | ||||
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; | ||||
return true; | ||||
} | ||||
// Extending unicode characters. A series of a non-extending char + | ||||
// any number of extending chars is treated as a single unit as far | ||||
// as editing and measuring is concerned. This is not fully correct, | ||||
// since some scripts/fonts/browsers also treat other configurations | ||||
// of code points as a group. | ||||
var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/; | ||||
function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); } | ||||
// DOM UTILITIES | ||||
function elt(tag, content, className, style) { | ||||
var e = document.createElement(tag); | ||||
if (className) e.className = className; | ||||
if (style) e.style.cssText = style; | ||||
if (typeof content == "string") e.appendChild(document.createTextNode(content)); | ||||
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); | ||||
return e; | ||||
} | ||||
var range; | ||||
if (document.createRange) range = function(node, start, end, endNode) { | ||||
var r = document.createRange(); | ||||
r.setEnd(endNode || node, end); | ||||
r.setStart(node, start); | ||||
return r; | ||||
}; | ||||
else range = function(node, start, end) { | ||||
var r = document.body.createTextRange(); | ||||
try { r.moveToElementText(node.parentNode); } | ||||
catch(e) { return r; } | ||||
r.collapse(true); | ||||
r.moveEnd("character", end); | ||||
r.moveStart("character", start); | ||||
return r; | ||||
}; | ||||
function removeChildren(e) { | ||||
for (var count = e.childNodes.length; count > 0; --count) | ||||
e.removeChild(e.firstChild); | ||||
return e; | ||||
} | ||||
function removeChildrenAndAdd(parent, e) { | ||||
return removeChildren(parent).appendChild(e); | ||||
} | ||||
var contains = CodeMirror.contains = function(parent, child) { | ||||
if (child.nodeType == 3) // Android browser always returns false when child is a textnode | ||||
child = child.parentNode; | ||||
if (parent.contains) | ||||
return parent.contains(child); | ||||
do { | ||||
if (child.nodeType == 11) child = child.host; | ||||
if (child == parent) return true; | ||||
} while (child = child.parentNode); | ||||
}; | ||||
function activeElt() { return document.activeElement; } | ||||
// Older versions of IE throws unspecified error when touching | ||||
// document.activeElement in some cases (during loading, in iframe) | ||||
if (ie && ie_version < 11) activeElt = function() { | ||||
try { return document.activeElement; } | ||||
catch(e) { return document.body; } | ||||
}; | ||||
function classTest(cls) { return new RegExp("(^|\\s)" + cls + "(?:$|\\s)\\s*"); } | ||||
var rmClass = CodeMirror.rmClass = function(node, cls) { | ||||
var current = node.className; | ||||
var match = classTest(cls).exec(current); | ||||
if (match) { | ||||
var after = current.slice(match.index + match[0].length); | ||||
node.className = current.slice(0, match.index) + (after ? match[1] + after : ""); | ||||
} | ||||
}; | ||||
var addClass = CodeMirror.addClass = function(node, cls) { | ||||
var current = node.className; | ||||
if (!classTest(cls).test(current)) node.className += (current ? " " : "") + cls; | ||||
}; | ||||
function joinClasses(a, b) { | ||||
var as = a.split(" "); | ||||
for (var i = 0; i < as.length; i++) | ||||
if (as[i] && !classTest(as[i]).test(b)) b += " " + as[i]; | ||||
return b; | ||||
} | ||||
// WINDOW-WIDE EVENTS | ||||
// These must be handled carefully, because naively registering a | ||||
// handler for each editor will cause the editors to never be | ||||
// garbage collected. | ||||
function forEachCodeMirror(f) { | ||||
if (!document.body.getElementsByClassName) return; | ||||
var byClass = document.body.getElementsByClassName("CodeMirror"); | ||||
for (var i = 0; i < byClass.length; i++) { | ||||
var cm = byClass[i].CodeMirror; | ||||
if (cm) f(cm); | ||||
} | ||||
} | ||||
var globalsRegistered = false; | ||||
function ensureGlobalHandlers() { | ||||
if (globalsRegistered) return; | ||||
registerGlobalHandlers(); | ||||
globalsRegistered = true; | ||||
} | ||||
function registerGlobalHandlers() { | ||||
// When the window resizes, we need to refresh active editors. | ||||
var resizeTimer; | ||||
on(window, "resize", function() { | ||||
if (resizeTimer == null) resizeTimer = setTimeout(function() { | ||||
resizeTimer = null; | ||||
forEachCodeMirror(onResize); | ||||
}, 100); | ||||
}); | ||||
// When the window loses focus, we want to show the editor as blurred | ||||
on(window, "blur", function() { | ||||
forEachCodeMirror(onBlur); | ||||
}); | ||||
} | ||||
// FEATURE DETECTION | ||||
// Detect drag-and-drop | ||||
var dragAndDrop = function() { | ||||
// There is *some* kind of drag-and-drop support in IE6-8, but I | ||||
// couldn't get it to work yet. | ||||
if (ie && ie_version < 9) return false; | ||||
var div = elt('div'); | ||||
return "draggable" in div || "dragDrop" in div; | ||||
}(); | ||||
var zwspSupported; | ||||
function zeroWidthElement(measure) { | ||||
if (zwspSupported == null) { | ||||
var test = elt("span", "\u200b"); | ||||
removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")])); | ||||
if (measure.firstChild.offsetHeight != 0) | ||||
zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !(ie && ie_version < 8); | ||||
} | ||||
var node = zwspSupported ? elt("span", "\u200b") : | ||||
elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); | ||||
node.setAttribute("cm-text", ""); | ||||
return node; | ||||
} | ||||
// Feature-detect IE's crummy client rect reporting for bidi text | ||||
var badBidiRects; | ||||
function hasBadBidiRects(measure) { | ||||
if (badBidiRects != null) return badBidiRects; | ||||
var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA")); | ||||
var r0 = range(txt, 0, 1).getBoundingClientRect(); | ||||
if (!r0 || r0.left == r0.right) return false; // Safari returns null in some cases (#2780) | ||||
var r1 = range(txt, 1, 2).getBoundingClientRect(); | ||||
return badBidiRects = (r1.right - r0.right < 3); | ||||
} | ||||
// See if "".split is the broken IE version, if so, provide an | ||||
// alternative way to split lines. | ||||
var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { | ||||
var pos = 0, result = [], l = string.length; | ||||
while (pos <= l) { | ||||
var nl = string.indexOf("\n", pos); | ||||
if (nl == -1) nl = string.length; | ||||
var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl); | ||||
var rt = line.indexOf("\r"); | ||||
if (rt != -1) { | ||||
result.push(line.slice(0, rt)); | ||||
pos += rt + 1; | ||||
} else { | ||||
result.push(line); | ||||
pos = nl + 1; | ||||
} | ||||
} | ||||
return result; | ||||
} : function(string){return string.split(/\r\n?|\n/);}; | ||||
var hasSelection = window.getSelection ? function(te) { | ||||
try { return te.selectionStart != te.selectionEnd; } | ||||
catch(e) { return false; } | ||||
} : function(te) { | ||||
try {var range = te.ownerDocument.selection.createRange();} | ||||
catch(e) {} | ||||
if (!range || range.parentElement() != te) return false; | ||||
return range.compareEndPoints("StartToEnd", range) != 0; | ||||
}; | ||||
var hasCopyEvent = (function() { | ||||
var e = elt("div"); | ||||
if ("oncopy" in e) return true; | ||||
e.setAttribute("oncopy", "return;"); | ||||
return typeof e.oncopy == "function"; | ||||
})(); | ||||
var badZoomedRects = null; | ||||
function hasBadZoomedRects(measure) { | ||||
if (badZoomedRects != null) return badZoomedRects; | ||||
var node = removeChildrenAndAdd(measure, elt("span", "x")); | ||||
var normal = node.getBoundingClientRect(); | ||||
var fromRange = range(node, 0, 1).getBoundingClientRect(); | ||||
return badZoomedRects = Math.abs(normal.left - fromRange.left) > 1; | ||||
} | ||||
// KEY NAMES | ||||
var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt", | ||||
19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End", | ||||
36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert", | ||||
46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete", | ||||
173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", | ||||
221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete", | ||||
63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"}; | ||||
CodeMirror.keyNames = keyNames; | ||||
(function() { | ||||
// Number keys | ||||
for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i); | ||||
// Alphabetic keys | ||||
for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i); | ||||
// Function keys | ||||
for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i; | ||||
})(); | ||||
// BIDI HELPERS | ||||
function iterateBidiSections(order, from, to, f) { | ||||
if (!order) return f(from, to, "ltr"); | ||||
var found = false; | ||||
for (var i = 0; i < order.length; ++i) { | ||||
var part = order[i]; | ||||
if (part.from < to && part.to > from || from == to && part.to == from) { | ||||
f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); | ||||
found = true; | ||||
} | ||||
} | ||||
if (!found) f(from, to, "ltr"); | ||||
} | ||||
function bidiLeft(part) { return part.level % 2 ? part.to : part.from; } | ||||
function bidiRight(part) { return part.level % 2 ? part.from : part.to; } | ||||
function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; } | ||||
function lineRight(line) { | ||||
var order = getOrder(line); | ||||
if (!order) return line.text.length; | ||||
return bidiRight(lst(order)); | ||||
} | ||||
function lineStart(cm, lineN) { | ||||
var line = getLine(cm.doc, lineN); | ||||
var visual = visualLine(line); | ||||
if (visual != line) lineN = lineNo(visual); | ||||
var order = getOrder(visual); | ||||
var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual); | ||||
return Pos(lineN, ch); | ||||
} | ||||
function lineEnd(cm, lineN) { | ||||
var merged, line = getLine(cm.doc, lineN); | ||||
while (merged = collapsedSpanAtEnd(line)) { | ||||
line = merged.find(1, true).line; | ||||
lineN = null; | ||||
} | ||||
var order = getOrder(line); | ||||
var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); | ||||
return Pos(lineN == null ? lineNo(line) : lineN, ch); | ||||
} | ||||
function lineStartSmart(cm, pos) { | ||||
var start = lineStart(cm, pos.line); | ||||
var line = getLine(cm.doc, start.line); | ||||
var order = getOrder(line); | ||||
if (!order || order[0].level == 0) { | ||||
var firstNonWS = Math.max(0, line.text.search(/\S/)); | ||||
var inWS = pos.line == start.line && pos.ch <= firstNonWS && pos.ch; | ||||
return Pos(start.line, inWS ? 0 : firstNonWS); | ||||
} | ||||
return start; | ||||
} | ||||
function compareBidiLevel(order, a, b) { | ||||
var linedir = order[0].level; | ||||
if (a == linedir) return true; | ||||
if (b == linedir) return false; | ||||
return a < b; | ||||
} | ||||
var bidiOther; | ||||
function getBidiPartAt(order, pos) { | ||||
bidiOther = null; | ||||
for (var i = 0, found; i < order.length; ++i) { | ||||
var cur = order[i]; | ||||
if (cur.from < pos && cur.to > pos) return i; | ||||
if ((cur.from == pos || cur.to == pos)) { | ||||
if (found == null) { | ||||
found = i; | ||||
} else if (compareBidiLevel(order, cur.level, order[found].level)) { | ||||
if (cur.from != cur.to) bidiOther = found; | ||||
return i; | ||||
} else { | ||||
if (cur.from != cur.to) bidiOther = i; | ||||
return found; | ||||
} | ||||
} | ||||
} | ||||
return found; | ||||
} | ||||
function moveInLine(line, pos, dir, byUnit) { | ||||
if (!byUnit) return pos + dir; | ||||
do pos += dir; | ||||
while (pos > 0 && isExtendingChar(line.text.charAt(pos))); | ||||
return pos; | ||||
} | ||||
// This is needed in order to move 'visually' through bi-directional | ||||
// text -- i.e., pressing left should make the cursor go left, even | ||||
// when in RTL text. The tricky part is the 'jumps', where RTL and | ||||
// LTR text touch each other. This often requires the cursor offset | ||||
// to move more than one unit, in order to visually move one unit. | ||||
function moveVisually(line, start, dir, byUnit) { | ||||
var bidi = getOrder(line); | ||||
if (!bidi) return moveLogically(line, start, dir, byUnit); | ||||
var pos = getBidiPartAt(bidi, start), part = bidi[pos]; | ||||
var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit); | ||||
for (;;) { | ||||
if (target > part.from && target < part.to) return target; | ||||
if (target == part.from || target == part.to) { | ||||
if (getBidiPartAt(bidi, target) == pos) return target; | ||||
part = bidi[pos += dir]; | ||||
return (dir > 0) == part.level % 2 ? part.to : part.from; | ||||
} else { | ||||
part = bidi[pos += dir]; | ||||
if (!part) return null; | ||||
if ((dir > 0) == part.level % 2) | ||||
target = moveInLine(line, part.to, -1, byUnit); | ||||
else | ||||
target = moveInLine(line, part.from, 1, byUnit); | ||||
} | ||||
} | ||||
} | ||||
function moveLogically(line, start, dir, byUnit) { | ||||
var target = start + dir; | ||||
if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir; | ||||
return target < 0 || target > line.text.length ? null : target; | ||||
} | ||||
// Bidirectional ordering algorithm | ||||
// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm | ||||
// that this (partially) implements. | ||||
// One-char codes used for character types: | ||||
// L (L): Left-to-Right | ||||
// R (R): Right-to-Left | ||||
// r (AL): Right-to-Left Arabic | ||||
// 1 (EN): European Number | ||||
// + (ES): European Number Separator | ||||
// % (ET): European Number Terminator | ||||
// n (AN): Arabic Number | ||||
// , (CS): Common Number Separator | ||||
// m (NSM): Non-Spacing Mark | ||||
// b (BN): Boundary Neutral | ||||
// s (B): Paragraph Separator | ||||
// t (S): Segment Separator | ||||
// w (WS): Whitespace | ||||
// N (ON): Other Neutrals | ||||
// Returns null if characters are ordered as they appear | ||||
// (left-to-right), or an array of sections ({from, to, level} | ||||
// objects) in the order in which they occur visually. | ||||
var bidiOrdering = (function() { | ||||
// Character types for codepoints 0 to 0xff | ||||
var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN"; | ||||
// Character types for codepoints 0x600 to 0x6ff | ||||
var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm"; | ||||
function charType(code) { | ||||
if (code <= 0xf7) return lowTypes.charAt(code); | ||||
else if (0x590 <= code && code <= 0x5f4) return "R"; | ||||
else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600); | ||||
else if (0x6ee <= code && code <= 0x8ac) return "r"; | ||||
else if (0x2000 <= code && code <= 0x200b) return "w"; | ||||
else if (code == 0x200c) return "b"; | ||||
else return "L"; | ||||
} | ||||
var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/; | ||||
var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/; | ||||
// Browsers seem to always treat the boundaries of block elements as being L. | ||||
var outerType = "L"; | ||||
function BidiSpan(level, from, to) { | ||||
this.level = level; | ||||
this.from = from; this.to = to; | ||||
} | ||||
return function(str) { | ||||
if (!bidiRE.test(str)) return false; | ||||
var len = str.length, types = []; | ||||
for (var i = 0, type; i < len; ++i) | ||||
types.push(type = charType(str.charCodeAt(i))); | ||||
// W1. Examine each non-spacing mark (NSM) in the level run, and | ||||
// change the type of the NSM to the type of the previous | ||||
// character. If the NSM is at the start of the level run, it will | ||||
// get the type of sor. | ||||
for (var i = 0, prev = outerType; i < len; ++i) { | ||||
var type = types[i]; | ||||
if (type == "m") types[i] = prev; | ||||
else prev = type; | ||||
} | ||||
// W2. Search backwards from each instance of a European number | ||||
// until the first strong type (R, L, AL, or sor) is found. If an | ||||
// AL is found, change the type of the European number to Arabic | ||||
// number. | ||||
// W3. Change all ALs to R. | ||||
for (var i = 0, cur = outerType; i < len; ++i) { | ||||
var type = types[i]; | ||||
if (type == "1" && cur == "r") types[i] = "n"; | ||||
else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; } | ||||
} | ||||
// W4. A single European separator between two European numbers | ||||
// changes to a European number. A single common separator between | ||||
// two numbers of the same type changes to that type. | ||||
for (var i = 1, prev = types[0]; i < len - 1; ++i) { | ||||
var type = types[i]; | ||||
if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1"; | ||||
else if (type == "," && prev == types[i+1] && | ||||
(prev == "1" || prev == "n")) types[i] = prev; | ||||
prev = type; | ||||
} | ||||
// W5. A sequence of European terminators adjacent to European | ||||
// numbers changes to all European numbers. | ||||
// W6. Otherwise, separators and terminators change to Other | ||||
// Neutral. | ||||
for (var i = 0; i < len; ++i) { | ||||
var type = types[i]; | ||||
if (type == ",") types[i] = "N"; | ||||
else if (type == "%") { | ||||
for (var end = i + 1; end < len && types[end] == "%"; ++end) {} | ||||
var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N"; | ||||
for (var j = i; j < end; ++j) types[j] = replace; | ||||
i = end - 1; | ||||
} | ||||
} | ||||
// W7. Search backwards from each instance of a European number | ||||
// until the first strong type (R, L, or sor) is found. If an L is | ||||
// found, then change the type of the European number to L. | ||||
for (var i = 0, cur = outerType; i < len; ++i) { | ||||
var type = types[i]; | ||||
if (cur == "L" && type == "1") types[i] = "L"; | ||||
else if (isStrong.test(type)) cur = type; | ||||
} | ||||
// N1. A sequence of neutrals takes the direction of the | ||||
// surrounding strong text if the text on both sides has the same | ||||
// direction. European and Arabic numbers act as if they were R in | ||||
// terms of their influence on neutrals. Start-of-level-run (sor) | ||||
// and end-of-level-run (eor) are used at level run boundaries. | ||||
// N2. Any remaining neutrals take the embedding direction. | ||||
for (var i = 0; i < len; ++i) { | ||||
if (isNeutral.test(types[i])) { | ||||
for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {} | ||||
var before = (i ? types[i-1] : outerType) == "L"; | ||||
var after = (end < len ? types[end] : outerType) == "L"; | ||||
var replace = before || after ? "L" : "R"; | ||||
for (var j = i; j < end; ++j) types[j] = replace; | ||||
i = end - 1; | ||||
} | ||||
} | ||||
// Here we depart from the documented algorithm, in order to avoid | ||||
// building up an actual levels array. Since there are only three | ||||
// levels (0, 1, 2) in an implementation that doesn't take | ||||
// explicit embedding into account, we can build up the order on | ||||
// the fly, without following the level-based algorithm. | ||||
var order = [], m; | ||||
for (var i = 0; i < len;) { | ||||
if (countsAsLeft.test(types[i])) { | ||||
var start = i; | ||||
for (++i; i < len && countsAsLeft.test(types[i]); ++i) {} | ||||
order.push(new BidiSpan(0, start, i)); | ||||
} else { | ||||
var pos = i, at = order.length; | ||||
for (++i; i < len && types[i] != "L"; ++i) {} | ||||
for (var j = pos; j < i;) { | ||||
if (countsAsNum.test(types[j])) { | ||||
if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j)); | ||||
var nstart = j; | ||||
for (++j; j < i && countsAsNum.test(types[j]); ++j) {} | ||||
order.splice(at, 0, new BidiSpan(2, nstart, j)); | ||||
pos = j; | ||||
} else ++j; | ||||
} | ||||
if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i)); | ||||
} | ||||
} | ||||
if (order[0].level == 1 && (m = str.match(/^\s+/))) { | ||||
order[0].from = m[0].length; | ||||
order.unshift(new BidiSpan(0, 0, m[0].length)); | ||||
} | ||||
if (lst(order).level == 1 && (m = str.match(/\s+$/))) { | ||||
lst(order).to -= m[0].length; | ||||
order.push(new BidiSpan(0, len - m[0].length, len)); | ||||
} | ||||
if (order[0].level == 2) | ||||
order.unshift(new BidiSpan(1, order[0].to, order[0].to)); | ||||
if (order[0].level != lst(order).level) | ||||
order.push(new BidiSpan(order[0].level, len, len)); | ||||
return order; | ||||
}; | ||||
})(); | ||||
// THE END | ||||
CodeMirror.version = "5.4.0"; | ||||
return CodeMirror; | ||||
}); | ||||