codemirror.js
5799 lines
| 221.2 KiB
| application/javascript
|
JavascriptLexer
|
r4120 | // CodeMirror version 3.15 | ||
r4042 | // | |||
r1305 | // CodeMirror is the only global var we claim | |||
r2861 | window.CodeMirror = (function() { | |||
"use strict"; | ||||
r4025 | ||||
// BROWSER SNIFFING | ||||
// Crude, but necessary to handle a number of hard-to-feature-detect | ||||
// bugs and behavior differences. | ||||
var gecko = /gecko\/\d/i.test(navigator.userAgent); | ||||
var ie = /MSIE \d/.test(navigator.userAgent); | ||||
var ie_lt8 = ie && (document.documentMode == null || document.documentMode < 8); | ||||
var ie_lt9 = ie && (document.documentMode == null || document.documentMode < 9); | ||||
var webkit = /WebKit\//.test(navigator.userAgent); | ||||
var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent); | ||||
var chrome = /Chrome\//.test(navigator.userAgent); | ||||
var opera = /Opera\//.test(navigator.userAgent); | ||||
var safari = /Apple Computer/.test(navigator.vendor); | ||||
var khtml = /KHTML\//.test(navigator.userAgent); | ||||
var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent); | ||||
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 = /windows/i.test(navigator.platform); | ||||
var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/); | ||||
if (opera_version) opera_version = Number(opera_version[1]); | ||||
|
r4120 | if (opera_version && opera_version >= 15) { opera = false; webkit = true; } | ||
r4025 | // Some browsers use the wrong event properties to signal cmd/ctrl on OS X | |||
var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11)); | ||||
var captureMiddleClick = gecko || (ie && !ie_lt9); | ||||
// Optimize some code when these features are not used | ||||
var sawReadOnlySpans = false, sawCollapsedSpans = false; | ||||
// CONSTRUCTOR | ||||
function CodeMirror(place, options) { | ||||
if (!(this instanceof CodeMirror)) return new CodeMirror(place, options); | ||||
this.options = options = options || {}; | ||||
r1305 | // Determine effective options based on given values and defaults. | |||
r4025 | for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt)) | |||
options[opt] = defaults[opt]; | ||||
setGuttersForLineNumbers(options); | ||||
var docStart = typeof options.value == "string" ? 0 : options.value.first; | ||||
var display = this.display = makeDisplay(place, docStart); | ||||
display.wrapper.CodeMirror = this; | ||||
updateGutters(this); | ||||
if (options.autofocus && !mobile) focusInput(this); | ||||
this.state = {keyMaps: [], | ||||
overlays: [], | ||||
modeGen: 0, | ||||
overwrite: false, focused: false, | ||||
suppressEdits: false, pasteIncoming: false, | ||||
draggingText: false, | ||||
highlight: new Delayed()}; | ||||
themeChanged(this); | ||||
if (options.lineWrapping) | ||||
this.display.wrapper.className += " CodeMirror-wrap"; | ||||
var doc = options.value; | ||||
if (typeof doc == "string") doc = new Doc(options.value, options.mode); | ||||
operation(this, attachDoc)(this, doc); | ||||
// Override magic textarea content restore that IE sometimes does | ||||
// on our hidden textarea on reload | ||||
if (ie) setTimeout(bind(resetInput, this, true), 20); | ||||
registerEventHandlers(this); | ||||
// IE throws unspecified error in certain cases, when | ||||
// trying to access activeElement before onload | ||||
var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { } | ||||
if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20); | ||||
else onBlur(this); | ||||
operation(this, function() { | ||||
for (var opt in optionHandlers) | ||||
if (optionHandlers.propertyIsEnumerable(opt)) | ||||
optionHandlers[opt](this, options[opt], Init); | ||||
for (var i = 0; i < initHooks.length; ++i) initHooks[i](this); | ||||
})(); | ||||
} | ||||
// DISPLAY CONSTRUCTOR | ||||
function makeDisplay(place, docStart) { | ||||
var d = {}; | ||||
var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;"); | ||||
if (webkit) input.style.width = "1000px"; | ||||
else input.setAttribute("wrap", "off"); | ||||
// if border: 0; -- iOS fails to open keyboard (issue #1287) | ||||
if (ios) input.style.border = "1px solid black"; | ||||
r4042 | input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false"); | |||
r4025 | ||||
r2861 | // Wraps and hides input textarea | |||
r4025 | d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;"); | |||
// The actual fake scrollbars. | ||||
d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar"); | ||||
d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar"); | ||||
d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler"); | ||||
r4042 | d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler"); | |||
r2861 | // DIVs containing the selection and the actual code | |||
r4042 | d.lineDiv = elt("div", null, "CodeMirror-code"); | |||
r4025 | d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1"); | |||
r2861 | // Blinky cursor, and element used to ensure cursor fits at the end of a line | |||
r4025 | d.cursor = elt("div", "\u00a0", "CodeMirror-cursor"); | |||
// Secondary cursor, shown when on a 'jump' in bi-directional text | ||||
d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"); | ||||
r2861 | // Used to measure text size | |||
r4025 | d.measure = elt("div", null, "CodeMirror-measure"); | |||
// Wraps everything that needs to exist inside the vertically-padded coordinate system | ||||
d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor], | ||||
null, "position: relative; outline: none"); | ||||
r2861 | // Moved around its parent to cover visible view | |||
r4025 | d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative"); | |||
r2861 | // Set to the height of the text, causes scrolling | |||
r4025 | d.sizer = elt("div", [d.mover], "CodeMirror-sizer"); | |||
// D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers | ||||
d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;"); | ||||
// Will contain the gutters, if any | ||||
d.gutters = elt("div", null, "CodeMirror-gutters"); | ||||
d.lineGutter = null; | ||||
r2861 | // Provides scrolling | |||
r4042 | d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll"); | |||
r4025 | d.scroller.setAttribute("tabIndex", "-1"); | |||
r1606 | // The element in which the editor lives. | |||
r4025 | d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV, | |||
r4042 | d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror"); | |||
r4025 | // Work around IE7 z-index bug | |||
if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; } | ||||
if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper); | ||||
r2547 | // Needed to hide big blue blinking cursor on Mobile Safari | |||
if (ios) input.style.width = "0px"; | ||||
r4025 | if (!webkit) d.scroller.draggable = true; | |||
r2547 | // Needed to handle Tab key in KHTML | |||
r4025 | if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; } | |||
r2861 | // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8). | |||
r4025 | else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px"; | |||
r1305 | // Current visible range (may be bigger than the view window). | |||
r4025 | d.viewOffset = d.lastSizeC = 0; | |||
d.showingFrom = d.showingTo = docStart; | ||||
// 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; | ||||
// See readInput and resetInput | ||||
d.prevInput = ""; | ||||
// Set to true when a non-horizontal-scrolling widget is added. As | ||||
// an optimization, widget aligning is skipped when d is false. | ||||
d.alignWidgets = false; | ||||
// Flag that indicates whether we currently expect input to appear | ||||
// (after some event like 'keypress' or 'input') and are polling | ||||
// intensively. | ||||
d.pollingFast = false; | ||||
// Self-resetting timeout for the poller | ||||
d.poll = new Delayed(); | ||||
d.cachedCharWidth = d.cachedTextHeight = null; | ||||
d.measureLineCache = []; | ||||
d.measureLineCachePos = 0; | ||||
// Tracks when resetInput has punted to just putting a short | ||||
// string instead of the (large) selection. | ||||
d.inaccurateSelection = false; | ||||
r1606 | // Tracks the maximum line length so that the horizontal scrollbar | |||
// can be kept static when scrolling. | ||||
r4025 | d.maxLine = null; | |||
d.maxLineLength = 0; | ||||
d.maxLineChanged = false; | ||||
// Used for measuring wheel scrolling granularity | ||||
d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null; | ||||
return 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); | ||||
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) { | ||||
cm.display.wrapper.className += " CodeMirror-wrap"; | ||||
cm.display.sizer.style.minWidth = ""; | ||||
} else { | ||||
cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", ""); | ||||
computeMaxLength(cm); | ||||
} | ||||
estimateLineHeights(cm); | ||||
regChange(cm); | ||||
clearCaches(cm); | ||||
r4042 | setTimeout(function(){updateScrollbars(cm);}, 100); | |||
r4025 | } | |||
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; | ||||
else if (wrapping) | ||||
return (Math.ceil(line.text.length / perLine) || 1) * th; | ||||
else | ||||
return 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 keyMapChanged(cm) { | ||||
r4042 | var map = keyMap[cm.options.keyMap], style = map.style; | |||
r4025 | cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") + | |||
(style ? " cm-keymap-" + style : ""); | ||||
r4042 | cm.state.disableInput = map.disableInput; | |||
r4025 | } | |||
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); | ||||
r4042 | setTimeout(function(){alignHorizontally(cm);}, 20); | |||
r4025 | } | |||
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"; | ||||
} | ||||
function lineLength(doc, line) { | ||||
if (line.height == 0) return 0; | ||||
var len = line.text.length, merged, cur = line; | ||||
while (merged = collapsedSpanAtStart(cur)) { | ||||
var found = merged.find(); | ||||
cur = getLine(doc, found.from.line); | ||||
len += found.from.ch - found.to.ch; | ||||
} | ||||
cur = line; | ||||
while (merged = collapsedSpanAtEnd(cur)) { | ||||
var found = merged.find(); | ||||
len -= cur.text.length - found.from.ch; | ||||
cur = getLine(doc, found.to.line); | ||||
len += cur.text.length - found.to.ch; | ||||
} | ||||
return len; | ||||
} | ||||
function computeMaxLength(cm) { | ||||
var d = cm.display, doc = cm.doc; | ||||
d.maxLine = getLine(doc, doc.first); | ||||
d.maxLineLength = lineLength(doc, d.maxLine); | ||||
d.maxLineChanged = true; | ||||
doc.iter(function(line) { | ||||
var len = lineLength(doc, 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 = false; | ||||
for (var i = 0; i < options.gutters.length; ++i) { | ||||
if (options.gutters[i] == "CodeMirror-linenumbers") { | ||||
if (options.lineNumbers) found = true; | ||||
else options.gutters.splice(i--, 1); | ||||
} | ||||
} | ||||
if (!found && options.lineNumbers) | ||||
options.gutters.push("CodeMirror-linenumbers"); | ||||
} | ||||
// SCROLLBARS | ||||
// Re-synchronize the fake scrollbars with the actual size of the | ||||
// content. Optionally force a scrollTop. | ||||
r4042 | function updateScrollbars(cm) { | |||
var d = cm.display, docHeight = cm.doc.height; | ||||
r4025 | var totalHeight = docHeight + paddingVert(d); | |||
d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px"; | ||||
r4042 | d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px"; | |||
r4025 | var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight); | |||
r4042 | var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1); | |||
var needsV = scrollHeight > (d.scroller.clientHeight + 1); | ||||
r4025 | if (needsV) { | |||
d.scrollbarV.style.display = "block"; | ||||
d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0"; | ||||
d.scrollbarV.firstChild.style.height = | ||||
(scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px"; | ||||
} else d.scrollbarV.style.display = ""; | ||||
if (needsH) { | ||||
d.scrollbarH.style.display = "block"; | ||||
d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0"; | ||||
d.scrollbarH.firstChild.style.width = | ||||
(d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px"; | ||||
} else d.scrollbarH.style.display = ""; | ||||
if (needsH && needsV) { | ||||
d.scrollbarFiller.style.display = "block"; | ||||
d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px"; | ||||
} else d.scrollbarFiller.style.display = ""; | ||||
r4042 | if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) { | |||
d.gutterFiller.style.display = "block"; | ||||
d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px"; | ||||
d.gutterFiller.style.width = d.gutters.offsetWidth + "px"; | ||||
} else d.gutterFiller.style.display = ""; | ||||
r4025 | ||||
if (mac_geLion && scrollbarWidth(d.measure) === 0) | ||||
d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px"; | ||||
} | ||||
function visibleLines(display, doc, viewPort) { | ||||
var top = display.scroller.scrollTop, height = display.wrapper.clientHeight; | ||||
if (typeof viewPort == "number") top = viewPort; | ||||
else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;} | ||||
top = Math.floor(top - paddingTop(display)); | ||||
var bottom = Math.ceil(top + height); | ||||
return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)}; | ||||
} | ||||
// LINE NUMBERS | ||||
function alignHorizontally(cm) { | ||||
var display = cm.display; | ||||
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, l = comp + "px"; | ||||
for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) { | ||||
for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l; | ||||
} | ||||
if (cm.options.fixedGutter) | ||||
display.gutters.style.left = (comp + gutterW) + "px"; | ||||
} | ||||
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); | ||||
display.lineNumWidth = display.lineNumInnerWidth + padding; | ||||
display.lineNumChars = display.lineNumInnerWidth ? last.length : -1; | ||||
display.lineGutter.style.width = display.lineNumWidth + "px"; | ||||
return true; | ||||
} | ||||
return false; | ||||
} | ||||
function lineNumberFor(options, i) { | ||||
return String(options.lineNumberFormatter(i + options.firstLineNumber)); | ||||
} | ||||
function compensateForHScroll(display) { | ||||
return getRect(display.scroller).left - getRect(display.sizer).left; | ||||
} | ||||
// DISPLAY DRAWING | ||||
|
r4120 | function updateDisplay(cm, changes, viewPort, forced) { | ||
r4025 | var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated; | |||
var visible = visibleLines(cm.display, cm.doc, viewPort); | ||||
for (;;) { | ||||
|
r4120 | if (!updateDisplayInner(cm, changes, visible, forced)) break; | ||
forced = false; | ||||
r4042 | updated = true; | |||
r4025 | updateSelection(cm); | |||
r4042 | updateScrollbars(cm); | |||
r4025 | ||||
// Clip forced viewport to actual scrollable area | ||||
if (viewPort) | ||||
viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight, | ||||
typeof viewPort == "number" ? viewPort : viewPort.top); | ||||
visible = visibleLines(cm.display, cm.doc, viewPort); | ||||
if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo) | ||||
break; | ||||
changes = []; | ||||
} | ||||
r4042 | if (updated) { | |||
signalLater(cm, "update", cm); | ||||
if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo) | ||||
signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo); | ||||
} | ||||
r4025 | return updated; | |||
} | ||||
// Uses a set of changes plus the current scroll position to | ||||
// determine which DOM updates have to be made, and makes the | ||||
// updates. | ||||
|
r4120 | function updateDisplayInner(cm, changes, visible, forced) { | ||
r4025 | var display = cm.display, doc = cm.doc; | |||
if (!display.wrapper.clientWidth) { | ||||
display.showingFrom = display.showingTo = doc.first; | ||||
display.viewOffset = 0; | ||||
return; | ||||
} | ||||
// Bail out if the visible area is already rendered and nothing changed. | ||||
|
r4120 | if (!forced && changes.length == 0 && | ||
r4025 | visible.from > display.showingFrom && visible.to < display.showingTo) | |||
return; | ||||
if (maybeUpdateLineNumberWidth(cm)) | ||||
changes = [{from: doc.first, to: doc.first + doc.size}]; | ||||
var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px"; | ||||
display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0"; | ||||
// Used to determine which lines need their line numbers updated | ||||
var positionsChangedFrom = Infinity; | ||||
if (cm.options.lineNumbers) | ||||
for (var i = 0; i < changes.length; ++i) | ||||
if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; } | ||||
var end = doc.first + doc.size; | ||||
var from = Math.max(visible.from - cm.options.viewportMargin, doc.first); | ||||
var to = Math.min(end, visible.to + cm.options.viewportMargin); | ||||
if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom); | ||||
if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo); | ||||
if (sawCollapsedSpans) { | ||||
from = lineNo(visualLine(doc, getLine(doc, from))); | ||||
while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to; | ||||
} | ||||
// Create a range of theoretically intact lines, and punch holes | ||||
// in that using the change info. | ||||
var intact = [{from: Math.max(display.showingFrom, doc.first), | ||||
to: Math.min(display.showingTo, end)}]; | ||||
if (intact[0].from >= intact[0].to) intact = []; | ||||
else intact = computeIntact(intact, changes); | ||||
// When merged lines are present, we might have to reduce the | ||||
// intact ranges because changes in continued fragments of the | ||||
// intact lines do require the lines to be redrawn. | ||||
if (sawCollapsedSpans) | ||||
for (var i = 0; i < intact.length; ++i) { | ||||
var range = intact[i], merged; | ||||
while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) { | ||||
var newTo = merged.find().from.line; | ||||
if (newTo > range.from) range.to = newTo; | ||||
else { intact.splice(i--, 1); break; } | ||||
} | ||||
} | ||||
// Clip off the parts that won't be visible | ||||
var intactLines = 0; | ||||
for (var i = 0; i < intact.length; ++i) { | ||||
var range = intact[i]; | ||||
if (range.from < from) range.from = from; | ||||
if (range.to > to) range.to = to; | ||||
if (range.from >= range.to) intact.splice(i--, 1); | ||||
else intactLines += range.to - range.from; | ||||
} | ||||
|
r4120 | if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) { | ||
r4025 | updateViewOffset(cm); | |||
return; | ||||
} | ||||
intact.sort(function(a, b) {return a.from - b.from;}); | ||||
// Avoid crashing on IE's "unspecified error" when in iframes | ||||
try { | ||||
var focused = document.activeElement; | ||||
} catch(e) {} | ||||
if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none"; | ||||
patchDisplay(cm, from, to, intact, positionsChangedFrom); | ||||
display.lineDiv.style.display = ""; | ||||
if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus(); | ||||
var different = from != display.showingFrom || to != display.showingTo || | ||||
display.lastSizeC != display.wrapper.clientHeight; | ||||
// This is just a bogus formula that detects when the editor is | ||||
// resized or the font size changes. | ||||
r4042 | if (different) { | |||
display.lastSizeC = display.wrapper.clientHeight; | ||||
startWorker(cm, 400); | ||||
} | ||||
r4025 | display.showingFrom = from; display.showingTo = to; | |||
|
r4120 | updateHeightsInViewport(cm); | ||
updateViewOffset(cm); | ||||
return true; | ||||
} | ||||
function updateHeightsInViewport(cm) { | ||||
var display = cm.display; | ||||
r4025 | var prevBottom = display.lineDiv.offsetTop; | |||
for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) { | ||||
if (ie_lt8) { | ||||
var bot = node.offsetTop + node.offsetHeight; | ||||
height = bot - prevBottom; | ||||
prevBottom = bot; | ||||
} else { | ||||
var box = getRect(node); | ||||
height = box.bottom - box.top; | ||||
} | ||||
var diff = node.lineObj.height - height; | ||||
if (height < 2) height = textHeight(display); | ||||
if (diff > .001 || diff < -.001) { | ||||
updateLineHeight(node.lineObj, height); | ||||
var widgets = node.lineObj.widgets; | ||||
if (widgets) for (var i = 0; i < widgets.length; ++i) | ||||
widgets[i].height = widgets[i].node.offsetHeight; | ||||
} | ||||
} | ||||
} | ||||
function updateViewOffset(cm) { | ||||
var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom)); | ||||
// Position the mover div to align with the current virtual scroll position | ||||
cm.display.mover.style.top = off + "px"; | ||||
} | ||||
function computeIntact(intact, changes) { | ||||
for (var i = 0, l = changes.length || 0; i < l; ++i) { | ||||
var change = changes[i], intact2 = [], diff = change.diff || 0; | ||||
for (var j = 0, l2 = intact.length; j < l2; ++j) { | ||||
var range = intact[j]; | ||||
if (change.to <= range.from && change.diff) { | ||||
intact2.push({from: range.from + diff, to: range.to + diff}); | ||||
} else if (change.to <= range.from || change.from >= range.to) { | ||||
intact2.push(range); | ||||
} else { | ||||
if (change.from > range.from) | ||||
intact2.push({from: range.from, to: change.from}); | ||||
if (change.to < range.to) | ||||
intact2.push({from: change.to + diff, to: range.to + diff}); | ||||
} | ||||
} | ||||
intact = intact2; | ||||
} | ||||
return intact; | ||||
} | ||||
function getDimensions(cm) { | ||||
var d = cm.display, left = {}, width = {}; | ||||
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) { | ||||
left[cm.options.gutters[i]] = n.offsetLeft; | ||||
width[cm.options.gutters[i]] = n.offsetWidth; | ||||
} | ||||
return {fixedPos: compensateForHScroll(d), | ||||
gutterTotalWidth: d.gutters.offsetWidth, | ||||
gutterLeft: left, | ||||
gutterWidth: width, | ||||
wrapperWidth: d.wrapper.clientWidth}; | ||||
} | ||||
function patchDisplay(cm, from, to, intact, updateNumbersFrom) { | ||||
var dims = getDimensions(cm); | ||||
var display = cm.display, lineNumbers = cm.options.lineNumbers; | ||||
if (!intact.length && (!webkit || !cm.display.currentWheelTarget)) | ||||
removeChildren(display.lineDiv); | ||||
var container = display.lineDiv, cur = container.firstChild; | ||||
function rm(node) { | ||||
var next = node.nextSibling; | ||||
if (webkit && mac && cm.display.currentWheelTarget == node) { | ||||
node.style.display = "none"; | ||||
node.lineObj = null; | ||||
} else { | ||||
node.parentNode.removeChild(node); | ||||
} | ||||
return next; | ||||
} | ||||
var nextIntact = intact.shift(), lineN = from; | ||||
cm.doc.iter(from, to, function(line) { | ||||
if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift(); | ||||
if (lineIsHidden(cm.doc, line)) { | ||||
if (line.height != 0) updateLineHeight(line, 0); | ||||
r4042 | if (line.widgets && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) { | |||
var w = line.widgets[i]; | ||||
if (w.showIfHidden) { | ||||
r4025 | var prev = cur.previousSibling; | |||
if (/pre/i.test(prev.nodeName)) { | ||||
var wrap = elt("div", null, null, "position: relative"); | ||||
prev.parentNode.replaceChild(wrap, prev); | ||||
wrap.appendChild(prev); | ||||
prev = wrap; | ||||
} | ||||
r4042 | var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget")); | |||
if (!w.handleMouseEvents) wnode.ignoreEvents = true; | ||||
positionLineWidget(w, wnode, prev, dims); | ||||
r4025 | } | |||
r4042 | } | |||
r4025 | } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) { | |||
// This line is intact. Skip to the actual node. Update its | ||||
// line number if needed. | ||||
while (cur.lineObj != line) cur = rm(cur); | ||||
if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber) | ||||
setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN)); | ||||
cur = cur.nextSibling; | ||||
} else { | ||||
// For lines with widgets, make an attempt to find and reuse | ||||
// the existing element, so that widgets aren't needlessly | ||||
// removed and re-inserted into the dom | ||||
if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling) | ||||
if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; } | ||||
// This line needs to be generated. | ||||
var lineNode = buildLineElement(cm, line, lineN, dims, reuse); | ||||
if (lineNode != reuse) { | ||||
container.insertBefore(lineNode, cur); | ||||
} else { | ||||
while (cur != reuse) cur = rm(cur); | ||||
cur = cur.nextSibling; | ||||
} | ||||
lineNode.lineObj = line; | ||||
} | ||||
++lineN; | ||||
}); | ||||
while (cur) cur = rm(cur); | ||||
} | ||||
function buildLineElement(cm, line, lineNo, dims, reuse) { | ||||
var lineElement = lineContent(cm, line); | ||||
var markers = line.gutterMarkers, display = cm.display, wrap; | ||||
if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass && !line.widgets) | ||||
return lineElement; | ||||
// Lines with gutter elements, widgets or a background class need | ||||
// to be wrapped again, and have the extra elements added to the | ||||
// wrapper div | ||||
if (reuse) { | ||||
reuse.alignable = null; | ||||
r4042 | var isOk = true, widgetsSeen = 0, insertBefore = null; | |||
r4025 | for (var n = reuse.firstChild, next; n; n = next) { | |||
next = n.nextSibling; | ||||
if (!/\bCodeMirror-linewidget\b/.test(n.className)) { | ||||
reuse.removeChild(n); | ||||
} else { | ||||
|
r4120 | for (var i = 0; i < line.widgets.length; ++i) { | ||
r4042 | var widget = line.widgets[i]; | |||
r4025 | if (widget.node == n.firstChild) { | |||
|
r4120 | if (!widget.above && !insertBefore) insertBefore = n; | ||
r4025 | positionLineWidget(widget, n, reuse, dims); | |||
++widgetsSeen; | ||||
break; | ||||
} | ||||
} | ||||
if (i == line.widgets.length) { isOk = false; break; } | ||||
} | ||||
} | ||||
r4042 | reuse.insertBefore(lineElement, insertBefore); | |||
r4025 | if (isOk && widgetsSeen == line.widgets.length) { | |||
wrap = reuse; | ||||
reuse.className = line.wrapClass || ""; | ||||
} | ||||
} | ||||
if (!wrap) { | ||||
wrap = elt("div", null, line.wrapClass, "position: relative"); | ||||
wrap.appendChild(lineElement); | ||||
} | ||||
// Kludge to make sure the styled element lies behind the selection (by z-index) | ||||
if (line.bgClass) | ||||
wrap.insertBefore(elt("div", null, line.bgClass + " CodeMirror-linebackground"), wrap.firstChild); | ||||
if (cm.options.lineNumbers || markers) { | ||||
var gutterWrap = wrap.insertBefore(elt("div", null, null, "position: absolute; left: " + | ||||
(cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"), | ||||
wrap.firstChild); | ||||
if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap); | ||||
if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"])) | ||||
wrap.lineNumber = gutterWrap.appendChild( | ||||
elt("div", lineNumberFor(cm.options, lineNo), | ||||
"CodeMirror-linenumber CodeMirror-gutter-elt", | ||||
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: " | ||||
+ 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")); | ||||
} | ||||
} | ||||
if (ie_lt8) wrap.style.zIndex = 2; | ||||
if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) { | ||||
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget"); | ||||
r4042 | if (!widget.handleMouseEvents) node.ignoreEvents = true; | |||
r4025 | positionLineWidget(widget, node, wrap, dims); | |||
if (widget.above) | ||||
wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement); | ||||
else | ||||
wrap.appendChild(node); | ||||
signalLater(widget, "redraw"); | ||||
} | ||||
return wrap; | ||||
} | ||||
function positionLineWidget(widget, node, wrap, dims) { | ||||
if (widget.noHScroll) { | ||||
(wrap.alignable || (wrap.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"; | ||||
} | ||||
} | ||||
// SELECTION / CURSOR | ||||
function updateSelection(cm) { | ||||
var display = cm.display; | ||||
var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to); | ||||
if (collapsed || cm.options.showCursorWhenSelecting) | ||||
updateSelectionCursor(cm); | ||||
else | ||||
display.cursor.style.display = display.otherCursor.style.display = "none"; | ||||
if (!collapsed) | ||||
updateSelectionRange(cm); | ||||
else | ||||
display.selectionDiv.style.display = "none"; | ||||
// Move the hidden textarea near the cursor to prevent scrolling artifacts | ||||
if (cm.options.moveInputWithCursor) { | ||||
var headPos = cursorCoords(cm, cm.doc.sel.head, "div"); | ||||
var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv); | ||||
display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10, | ||||
headPos.top + lineOff.top - wrapOff.top)) + "px"; | ||||
display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10, | ||||
headPos.left + lineOff.left - wrapOff.left)) + "px"; | ||||
} | ||||
} | ||||
// No selection, plain cursor | ||||
function updateSelectionCursor(cm) { | ||||
var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div"); | ||||
display.cursor.style.left = pos.left + "px"; | ||||
display.cursor.style.top = pos.top + "px"; | ||||
display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px"; | ||||
display.cursor.style.display = ""; | ||||
if (pos.other) { | ||||
display.otherCursor.style.display = ""; | ||||
display.otherCursor.style.left = pos.other.left + "px"; | ||||
display.otherCursor.style.top = pos.other.top + "px"; | ||||
display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px"; | ||||
} else { display.otherCursor.style.display = "none"; } | ||||
} | ||||
// Highlight selection | ||||
function updateSelectionRange(cm) { | ||||
var display = cm.display, doc = cm.doc, sel = cm.doc.sel; | ||||
var fragment = document.createDocumentFragment(); | ||||
var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display); | ||||
function add(left, top, width, bottom) { | ||||
if (top < 0) top = 0; | ||||
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left + | ||||
"px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) + | ||||
"px; height: " + (bottom - top) + "px")); | ||||
} | ||||
r4042 | function drawForLine(line, fromArg, toArg) { | |||
r4025 | var lineObj = getLine(doc, line); | |||
r4042 | var lineLen = lineObj.text.length; | |||
var start, end; | ||||
function coords(ch, bias) { | ||||
return charCoords(cm, Pos(line, ch), "div", lineObj, bias); | ||||
r4025 | } | |||
iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) { | ||||
r4042 | var leftPos = coords(from, "left"), rightPos, left, right; | |||
r4025 | if (from == to) { | |||
rightPos = leftPos; | ||||
left = right = leftPos.left; | ||||
} else { | ||||
r4042 | rightPos = coords(to - 1, "right"); | |||
r4025 | if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; } | |||
left = leftPos.left; | ||||
right = rightPos.right; | ||||
} | ||||
r4042 | if (fromArg == null && from == 0) left = pl; | |||
r4025 | if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part | |||
add(left, leftPos.top, null, leftPos.bottom); | ||||
left = pl; | ||||
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top); | ||||
} | ||||
if (toArg == null && to == lineLen) right = clientWidth; | ||||
r4042 | 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; | ||||
r4025 | if (left < pl + 1) left = pl; | |||
add(left, rightPos.top, right - left, rightPos.bottom); | ||||
}); | ||||
r4042 | return {start: start, end: end}; | |||
r4025 | } | |||
if (sel.from.line == sel.to.line) { | ||||
drawForLine(sel.from.line, sel.from.ch, sel.to.ch); | ||||
} else { | ||||
r4042 | var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line); | |||
var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine); | ||||
var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end; | ||||
var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start; | ||||
if (singleVLine) { | ||||
if (leftEnd.top < rightStart.top - 2) { | ||||
add(leftEnd.right, leftEnd.top, null, leftEnd.bottom); | ||||
add(pl, rightStart.top, rightStart.left, rightStart.bottom); | ||||
} else { | ||||
add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom); | ||||
r4025 | } | |||
} | ||||
r4042 | if (leftEnd.bottom < rightStart.top) | |||
add(pl, leftEnd.bottom, null, rightStart.top); | ||||
r4025 | } | |||
removeChildrenAndAdd(display.selectionDiv, fragment); | ||||
display.selectionDiv.style.display = ""; | ||||
} | ||||
// Cursor-blinking | ||||
function restartBlink(cm) { | ||||
if (!cm.state.focused) return; | ||||
var display = cm.display; | ||||
clearInterval(display.blinker); | ||||
var on = true; | ||||
display.cursor.style.visibility = display.otherCursor.style.visibility = ""; | ||||
display.blinker = setInterval(function() { | ||||
display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden"; | ||||
}, cm.options.cursorBlinkRate); | ||||
} | ||||
// HIGHLIGHT WORKER | ||||
function startWorker(cm, time) { | ||||
if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo) | ||||
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.showingTo) return; | ||||
var end = +new Date + cm.options.workTime; | ||||
var state = copyState(doc.mode, getStateBefore(cm, doc.frontier)); | ||||
var changed = [], prevChange; | ||||
doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) { | ||||
if (doc.frontier >= cm.display.showingFrom) { // Visible | ||||
var oldStyles = line.styles; | ||||
line.styles = highlightLine(cm, line, state); | ||||
var ischange = !oldStyles || oldStyles.length != line.styles.length; | ||||
for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i]; | ||||
if (ischange) { | ||||
if (prevChange && prevChange.end == doc.frontier) prevChange.end++; | ||||
else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1}); | ||||
} | ||||
line.stateAfter = copyState(doc.mode, state); | ||||
} else { | ||||
processLine(cm, line, 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 (changed.length) | ||||
operation(cm, function() { | ||||
for (var i = 0; i < changed.length; ++i) | ||||
regChange(this, changed[i].start, changed[i].end); | ||||
})(); | ||||
} | ||||
// 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. | ||||
r4042 | function findStartLine(cm, n, precise) { | |||
r4025 | var minindent, minline, doc = cm.doc; | |||
for (var search = n, lim = n - 100; search > lim; --search) { | ||||
if (search <= doc.first) return doc.first; | ||||
var line = getLine(doc, search - 1); | ||||
r4042 | if (line.stateAfter && (!precise || search <= doc.frontier)) return search; | |||
r4025 | var indented = countColumn(line.text, null, cm.options.tabSize); | |||
if (minline == null || minindent > indented) { | ||||
minline = search - 1; | ||||
minindent = indented; | ||||
} | ||||
} | ||||
return minline; | ||||
} | ||||
r4042 | function getStateBefore(cm, n, precise) { | |||
r4025 | var doc = cm.doc, display = cm.display; | |||
if (!doc.mode.startState) return true; | ||||
r4042 | var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter; | |||
r4025 | if (!state) state = startState(doc.mode); | |||
else state = copyState(doc.mode, state); | ||||
doc.iter(pos, n, function(line) { | ||||
processLine(cm, line, state); | ||||
var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo; | ||||
line.stateAfter = save ? copyState(doc.mode, state) : null; | ||||
++pos; | ||||
}); | ||||
return state; | ||||
} | ||||
// POSITION MEASUREMENT | ||||
function paddingTop(display) {return display.lineSpace.offsetTop;} | ||||
function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;} | ||||
function paddingLeft(display) { | ||||
var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x")); | ||||
return e.offsetLeft; | ||||
} | ||||
r4042 | function measureChar(cm, line, ch, data, bias) { | |||
r4025 | var dir = -1; | |||
data = data || measureLine(cm, line); | ||||
for (var pos = ch;; pos += dir) { | ||||
var r = data[pos]; | ||||
if (r) break; | ||||
if (dir < 0 && pos == 0) dir = 1; | ||||
} | ||||
|
r4120 | bias = pos > ch ? "left" : pos < ch ? "right" : bias; | ||
if (bias == "left" && r.leftSide) r = r.leftSide; | ||||
else if (bias == "right" && r.rightSide) r = r.rightSide; | ||||
r4025 | return {left: pos < ch ? r.right : r.left, | |||
right: pos > ch ? r.left : r.right, | ||||
|
r4120 | top: r.top, | ||
bottom: r.bottom}; | ||||
r4025 | } | |||
function findCachedMeasurement(cm, line) { | ||||
var cache = cm.display.measureLineCache; | ||||
for (var i = 0; i < cache.length; ++i) { | ||||
var memo = cache[i]; | ||||
if (memo.text == line.text && memo.markedSpans == line.markedSpans && | ||||
cm.display.scroller.clientWidth == memo.width && | ||||
memo.classes == line.textClass + "|" + line.bgClass + "|" + line.wrapClass) | ||||
r4042 | return memo; | |||
} | ||||
} | ||||
function clearCachedMeasurement(cm, line) { | ||||
var exists = findCachedMeasurement(cm, line); | ||||
if (exists) exists.text = exists.measure = exists.markedSpans = null; | ||||
r4025 | } | |||
function measureLine(cm, line) { | ||||
// First look in the cache | ||||
r4042 | var cached = findCachedMeasurement(cm, line); | |||
if (cached) return cached.measure; | ||||
// Failing that, recompute and store result in cache | ||||
var measure = measureLineInner(cm, line); | ||||
var cache = cm.display.measureLineCache; | ||||
var memo = {text: line.text, width: cm.display.scroller.clientWidth, | ||||
markedSpans: line.markedSpans, measure: measure, | ||||
classes: line.textClass + "|" + line.bgClass + "|" + line.wrapClass}; | ||||
if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo; | ||||
else cache.push(memo); | ||||
r4025 | return measure; | |||
} | ||||
function measureLineInner(cm, line) { | ||||
var display = cm.display, measure = emptyArray(line.text.length); | ||||
|
r4120 | var pre = lineContent(cm, line, measure, true); | ||
r4025 | ||||
// IE does not cache element positions of inline elements between | ||||
// calls to getBoundingClientRect. This makes the loop below, | ||||
// which gathers the positions of all the characters on the line, | ||||
// do an amount of layout work quadratic to the number of | ||||
// characters. When line wrapping is off, we try to improve things | ||||
// by first subdividing the line into a bunch of inline blocks, so | ||||
// that IE can reuse most of the layout information from caches | ||||
// for those blocks. This does interfere with line wrapping, so it | ||||
// doesn't work when wrapping is on, but in that case the | ||||
// situation is slightly better, since IE does cache line-wrapping | ||||
// information and only recomputes per-line. | ||||
if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) { | ||||
var fragment = document.createDocumentFragment(); | ||||
var chunk = 10, n = pre.childNodes.length; | ||||
for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) { | ||||
var wrap = elt("div", null, null, "display: inline-block"); | ||||
for (var j = 0; j < chunk && n; ++j) { | ||||
wrap.appendChild(pre.firstChild); | ||||
--n; | ||||
} | ||||
fragment.appendChild(wrap); | ||||
} | ||||
pre.appendChild(fragment); | ||||
} | ||||
removeChildrenAndAdd(display.measure, pre); | ||||
var outer = getRect(display.lineDiv); | ||||
var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight; | ||||
// Work around an IE7/8 bug where it will sometimes have randomly | ||||
// replaced our pre with a clone at this point. | ||||
if (ie_lt9 && display.measure.first != pre) | ||||
removeChildrenAndAdd(display.measure, pre); | ||||
|
r4120 | function measureRect(rect) { | ||
var top = rect.top - outer.top, bot = rect.bottom - outer.top; | ||||
r4042 | if (bot > maxBot) bot = maxBot; | |||
if (top < 0) top = 0; | ||||
|
r4120 | for (var i = vranges.length - 2; i >= 0; i -= 2) { | ||
var rtop = vranges[i], rbot = vranges[i+1]; | ||||
r4025 | if (rtop > bot || rbot < top) continue; | |||
if (rtop <= top && rbot >= bot || | ||||
top <= rtop && bot >= rbot || | ||||
Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) { | ||||
|
r4120 | vranges[i] = Math.min(top, rtop); | ||
vranges[i+1] = Math.max(bot, rbot); | ||||
break; | ||||
r4025 | } | |||
} | ||||
|
r4120 | if (i < 0) { i = vranges.length; vranges.push(top, bot); } | ||
return {left: rect.left - outer.left, | ||||
right: rect.right - outer.left, | ||||
top: i, bottom: null}; | ||||
} | ||||
function finishRect(rect) { | ||||
rect.bottom = vranges[rect.top+1]; | ||||
rect.top = vranges[rect.top]; | ||||
r4042 | } | |||
for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) { | ||||
|
r4120 | var node = cur, rect = null; | ||
r4042 | // A widget might wrap, needs special care | |||
if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) { | ||||
if (cur.firstChild.nodeType == 1) node = cur.firstChild; | ||||
|
r4120 | var rects = node.getClientRects(); | ||
r4042 | if (rects.length > 1) { | |||
|
r4120 | rect = data[i] = measureRect(rects[0]); | ||
rect.rightSide = measureRect(rects[rects.length - 1]); | ||||
r4042 | } | |||
} | ||||
|
r4120 | if (!rect) rect = data[i] = measureRect(getRect(node)); | ||
if (cur.measureRight) rect.right = getRect(cur.measureRight).left; | ||||
if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide)); | ||||
r4025 | } | |||
for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) { | ||||
|
r4120 | finishRect(cur); | ||
if (cur.leftSide) finishRect(cur.leftSide); | ||||
if (cur.rightSide) finishRect(cur.rightSide); | ||||
r4042 | } | |||
r4025 | return data; | |||
} | ||||
function measureLineWidth(cm, line) { | ||||
var hasBadSpan = false; | ||||
if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) { | ||||
var sp = line.markedSpans[i]; | ||||
if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true; | ||||
} | ||||
var cached = !hasBadSpan && findCachedMeasurement(cm, line); | ||||
r4042 | if (cached) return measureChar(cm, line, line.text.length, cached.measure, "right").right; | |||
r4025 | ||||
|
r4120 | var pre = lineContent(cm, line, null, true); | ||
r4025 | var end = pre.appendChild(zeroWidthElement(cm.display.measure)); | |||
removeChildrenAndAdd(cm.display.measure, pre); | ||||
return getRect(end).right - getRect(cm.display.lineDiv).left; | ||||
} | ||||
function clearCaches(cm) { | ||||
cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0; | ||||
cm.display.cachedCharWidth = cm.display.cachedTextHeight = null; | ||||
if (!cm.options.lineWrapping) cm.display.maxLineChanged = true; | ||||
cm.display.lineNumChars = null; | ||||
} | ||||
r4042 | function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; } | |||
function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; } | ||||
r4025 | // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), 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(cm, lineObj); | ||||
r4042 | if (context == "local") yOff += paddingTop(cm.display); | |||
else yOff -= cm.display.viewOffset; | ||||
if (context == "page" || context == "window") { | ||||
r4025 | var lOff = getRect(cm.display.lineSpace); | |||
r4042 | yOff += lOff.top + (context == "window" ? 0 : pageScrollY()); | |||
var xOff = lOff.left + (context == "window" ? 0 : pageScrollX()); | ||||
r4025 | rect.left += xOff; rect.right += xOff; | |||
} | ||||
rect.top += yOff; rect.bottom += yOff; | ||||
return rect; | ||||
} | ||||
// Context may be "window", "page", "div", or "local"/null | ||||
// Result is in "div" coords | ||||
function fromCoordSystem(cm, coords, context) { | ||||
if (context == "div") return coords; | ||||
var left = coords.left, top = coords.top; | ||||
r4042 | // First move into "page" coordinate system | |||
r4025 | if (context == "page") { | |||
r4042 | left -= pageScrollX(); | |||
top -= pageScrollY(); | ||||
} else if (context == "local" || !context) { | ||||
var localBox = getRect(cm.display.sizer); | ||||
left += localBox.left; | ||||
top += localBox.top; | ||||
} | ||||
r4025 | var lineSpaceBox = getRect(cm.display.lineSpace); | |||
r4042 | return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top}; | |||
} | ||||
function charCoords(cm, pos, context, lineObj, bias) { | ||||
r4025 | if (!lineObj) lineObj = getLine(cm.doc, pos.line); | |||
r4042 | return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context); | |||
r4025 | } | |||
function cursorCoords(cm, pos, context, lineObj, measurement) { | ||||
lineObj = lineObj || getLine(cm.doc, pos.line); | ||||
if (!measurement) measurement = measureLine(cm, lineObj); | ||||
function get(ch, right) { | ||||
r4042 | var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left"); | |||
r4025 | if (right) m.left = m.right; else m.right = m.left; | |||
return intoCoordSystem(cm, lineObj, m, context); | ||||
} | ||||
r4042 | 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); | ||||
} | ||||
r4025 | var order = getOrder(lineObj), ch = pos.ch; | |||
if (!order) return get(ch); | ||||
r4042 | var partPos = getBidiPartAt(order, ch); | |||
var val = getBidi(ch, partPos); | ||||
if (bidiOther != null) val.other = getBidi(ch, bidiOther); | ||||
return val; | ||||
} | ||||
function PosWithInfo(line, ch, outside, xRel) { | ||||
r4025 | var pos = new Pos(line, ch); | |||
r4042 | pos.xRel = xRel; | |||
r4025 | if (outside) pos.outside = true; | |||
return pos; | ||||
} | ||||
// Coords must be lineSpace-local | ||||
function coordsChar(cm, x, y) { | ||||
var doc = cm.doc; | ||||
y += cm.display.viewOffset; | ||||
r4042 | if (y < 0) return PosWithInfo(doc.first, 0, true, -1); | |||
r4025 | var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1; | |||
if (lineNo > last) | ||||
r4042 | return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1); | |||
r4025 | if (x < 0) x = 0; | |||
for (;;) { | ||||
var lineObj = getLine(doc, lineNo); | ||||
var found = coordsCharInner(cm, lineObj, lineNo, x, y); | ||||
var merged = collapsedSpanAtEnd(lineObj); | ||||
var mergedPos = merged && merged.find(); | ||||
r4042 | if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0)) | |||
r4025 | lineNo = mergedPos.to.line; | |||
else | ||||
return found; | ||||
} | ||||
} | ||||
function coordsCharInner(cm, lineObj, lineNo, x, y) { | ||||
var innerOff = y - heightAtLine(cm, lineObj); | ||||
var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth; | ||||
var measurement = measureLine(cm, lineObj); | ||||
function getX(ch) { | ||||
var sp = cursorCoords(cm, Pos(lineNo, ch), "line", | ||||
lineObj, measurement); | ||||
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; | ||||
r4042 | if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1); | |||
r4025 | // Do a binary search between these bounds. | |||
for (;;) { | ||||
if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) { | ||||
r4042 | var ch = x < fromX || x - fromX <= toX - x ? from : to; | |||
var xDiff = x - (ch == from ? fromX : toX); | ||||
r4025 | while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch; | |||
r4042 | var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside, | |||
xDiff < 0 ? -1 : xDiff ? 1 : 0); | ||||
r4025 | 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; | ||||
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; | ||||
} | ||||
function charWidth(display) { | ||||
if (display.cachedCharWidth != null) return display.cachedCharWidth; | ||||
var anchor = elt("span", "x"); | ||||
var pre = elt("pre", [anchor]); | ||||
removeChildrenAndAdd(display.measure, pre); | ||||
var width = anchor.offsetWidth; | ||||
if (width > 2) display.cachedCharWidth = width; | ||||
return width || 10; | ||||
} | ||||
// OPERATIONS | ||||
// Operations are used to wrap changes in such a way that each | ||||
// change won't have to update the cursor and display (which would | ||||
// be awkward, slow, and error-prone), but instead updates are | ||||
// batched and then all combined and executed at once. | ||||
var nextOpId = 0; | ||||
function startOperation(cm) { | ||||
cm.curOp = { | ||||
// An array of ranges of lines that have to be updated. See | ||||
// updateDisplay. | ||||
changes: [], | ||||
|
r4120 | forceUpdate: false, | ||
r4025 | updateInput: null, | |||
userSelChange: null, | ||||
textChanged: null, | ||||
selectionChanged: false, | ||||
cursorActivity: false, | ||||
updateMaxLine: false, | ||||
updateScrollPos: false, | ||||
id: ++nextOpId | ||||
}; | ||||
if (!delayedCallbackDepth++) delayedCallbacks = []; | ||||
} | ||||
function endOperation(cm) { | ||||
var op = cm.curOp, doc = cm.doc, display = cm.display; | ||||
cm.curOp = null; | ||||
if (op.updateMaxLine) computeMaxLength(cm); | ||||
if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) { | ||||
var width = measureLineWidth(cm, display.maxLine); | ||||
display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px"; | ||||
display.maxLineChanged = false; | ||||
var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth); | ||||
if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos) | ||||
setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true); | ||||
} | ||||
var newScrollPos, updated; | ||||
if (op.updateScrollPos) { | ||||
newScrollPos = op.updateScrollPos; | ||||
} else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible | ||||
var coords = cursorCoords(cm, doc.sel.head); | ||||
newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom); | ||||
} | ||||
|
r4120 | if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) { | ||
updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate); | ||||
r4025 | if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop; | |||
} | ||||
if (!updated && op.selectionChanged) updateSelection(cm); | ||||
if (op.updateScrollPos) { | ||||
display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = newScrollPos.scrollTop; | ||||
display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = newScrollPos.scrollLeft; | ||||
alignHorizontally(cm); | ||||
if (op.scrollToPos) | ||||
scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos), op.scrollToPosMargin); | ||||
} else if (newScrollPos) { | ||||
scrollCursorIntoView(cm); | ||||
} | ||||
if (op.selectionChanged) restartBlink(cm); | ||||
if (cm.state.focused && op.updateInput) | ||||
resetInput(cm, op.userSelChange); | ||||
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"); | ||||
var delayed; | ||||
if (!--delayedCallbackDepth) { | ||||
delayed = delayedCallbacks; | ||||
delayedCallbacks = null; | ||||
} | ||||
if (op.textChanged) | ||||
signal(cm, "change", cm, op.textChanged); | ||||
if (op.cursorActivity) signal(cm, "cursorActivity", cm); | ||||
if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i](); | ||||
} | ||||
// Wraps a function in an operation. Returns the wrapped function. | ||||
function operation(cm1, f) { | ||||
return function() { | ||||
var cm = cm1 || this, withOp = !cm.curOp; | ||||
if (withOp) startOperation(cm); | ||||
try { var result = f.apply(cm, arguments); } | ||||
finally { if (withOp) endOperation(cm); } | ||||
return result; | ||||
}; | ||||
} | ||||
function docOperation(f) { | ||||
return function() { | ||||
var withOp = this.cm && !this.cm.curOp, result; | ||||
if (withOp) startOperation(this.cm); | ||||
try { result = f.apply(this, arguments); } | ||||
finally { if (withOp) endOperation(this.cm); } | ||||
return result; | ||||
}; | ||||
} | ||||
function runInOp(cm, f) { | ||||
var withOp = !cm.curOp, result; | ||||
if (withOp) startOperation(cm); | ||||
try { result = f(); } | ||||
finally { if (withOp) endOperation(cm); } | ||||
return result; | ||||
} | ||||
function regChange(cm, from, to, lendiff) { | ||||
if (from == null) from = cm.doc.first; | ||||
if (to == null) to = cm.doc.first + cm.doc.size; | ||||
cm.curOp.changes.push({from: from, to: to, diff: lendiff}); | ||||
} | ||||
// INPUT HANDLING | ||||
function slowPoll(cm) { | ||||
if (cm.display.pollingFast) return; | ||||
cm.display.poll.set(cm.options.pollInterval, function() { | ||||
readInput(cm); | ||||
if (cm.state.focused) slowPoll(cm); | ||||
}); | ||||
} | ||||
function fastPoll(cm) { | ||||
var missed = false; | ||||
cm.display.pollingFast = true; | ||||
function p() { | ||||
var changed = readInput(cm); | ||||
if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);} | ||||
else {cm.display.pollingFast = false; slowPoll(cm);} | ||||
} | ||||
cm.display.poll.set(20, p); | ||||
} | ||||
// prevInput is a hack to work with IME. If we reset the textarea | ||||
// on every change, that breaks IME. So we look for changes | ||||
// compared to the previous content instead. (Modern browsers have | ||||
// events that indicate IME taking place, but these are not widely | ||||
// supported or compatible enough yet to rely on.) | ||||
function readInput(cm) { | ||||
var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel; | ||||
r4042 | if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.state.disableInput) return false; | |||
r4025 | var text = input.value; | |||
if (text == prevInput && posEq(sel.from, sel.to)) return false; | ||||
if (ie && !ie_lt9 && cm.display.inputHasSelection === text) { | ||||
resetInput(cm, true); | ||||
return false; | ||||
} | ||||
var withOp = !cm.curOp; | ||||
if (withOp) startOperation(cm); | ||||
sel.shift = false; | ||||
var same = 0, l = Math.min(prevInput.length, text.length); | ||||
while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same; | ||||
var from = sel.from, to = sel.to; | ||||
if (same < prevInput.length) | ||||
from = Pos(from.line, from.ch - (prevInput.length - same)); | ||||
else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming) | ||||
to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + (text.length - same))); | ||||
r4042 | ||||
r4025 | var updateInput = cm.curOp.updateInput; | |||
r4042 | var changeEvent = {from: from, to: to, text: splitLines(text.slice(same)), | |||
origin: cm.state.pasteIncoming ? "paste" : "+input"}; | ||||
makeChange(cm.doc, changeEvent, "end"); | ||||
r4025 | cm.curOp.updateInput = updateInput; | |||
r4042 | signalLater(cm, "inputRead", cm, changeEvent); | |||
r4025 | if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = ""; | |||
else cm.display.prevInput = text; | ||||
if (withOp) endOperation(cm); | ||||
cm.state.pasteIncoming = false; | ||||
return true; | ||||
} | ||||
function resetInput(cm, user) { | ||||
var minimal, selected, doc = cm.doc; | ||||
if (!posEq(doc.sel.from, doc.sel.to)) { | ||||
cm.display.prevInput = ""; | ||||
minimal = hasCopyEvent && | ||||
(doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000); | ||||
var content = minimal ? "-" : selected || cm.getSelection(); | ||||
cm.display.input.value = content; | ||||
if (cm.state.focused) selectInput(cm.display.input); | ||||
if (ie && !ie_lt9) cm.display.inputHasSelection = content; | ||||
} else if (user) { | ||||
cm.display.prevInput = cm.display.input.value = ""; | ||||
if (ie && !ie_lt9) cm.display.inputHasSelection = null; | ||||
} | ||||
cm.display.inaccurateSelection = minimal; | ||||
} | ||||
function focusInput(cm) { | ||||
if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input)) | ||||
cm.display.input.focus(); | ||||
} | ||||
function isReadOnly(cm) { | ||||
return cm.options.readOnly || cm.doc.cantEdit; | ||||
} | ||||
// EVENT HANDLERS | ||||
function registerEventHandlers(cm) { | ||||
var d = cm.display; | ||||
on(d.scroller, "mousedown", operation(cm, onMouseDown)); | ||||
if (ie) | ||||
on(d.scroller, "dblclick", operation(cm, function(e) { | ||||
r4042 | if (signalDOMEvent(cm, e)) return; | |||
r4025 | var pos = posFromMouse(cm, e); | |||
if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return; | ||||
e_preventDefault(e); | ||||
var word = findWordAt(getLine(cm.doc, pos.line).text, pos); | ||||
extendSelection(cm.doc, word.from, word.to); | ||||
})); | ||||
else | ||||
r4042 | on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); }); | |||
r4025 | on(d.lineSpace, "selectstart", function(e) { | |||
if (!eventInWidget(d, e)) e_preventDefault(e); | ||||
}); | ||||
r1305 | // Gecko browsers fire contextmenu *after* opening the menu, at | |||
// which point we can't mess with it anymore. Context menu is | ||||
// handled in onMouseDown for Gecko. | ||||
r4025 | if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);}); | |||
on(d.scroller, "scroll", function() { | ||||
if (d.scroller.clientHeight) { | ||||
setScrollTop(cm, d.scroller.scrollTop); | ||||
setScrollLeft(cm, d.scroller.scrollLeft, true); | ||||
signal(cm, "scroll", cm); | ||||
} | ||||
}); | ||||
on(d.scrollbarV, "scroll", function() { | ||||
if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop); | ||||
}); | ||||
on(d.scrollbarH, "scroll", function() { | ||||
if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft); | ||||
}); | ||||
on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);}); | ||||
on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);}); | ||||
function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); } | ||||
on(d.scrollbarH, "mousedown", reFocus); | ||||
on(d.scrollbarV, "mousedown", reFocus); | ||||
// Prevent wrapper from ever scrolling | ||||
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; }); | ||||
r4042 | var resizeTimer; | |||
r4025 | function onResize() { | |||
r4042 | if (resizeTimer == null) resizeTimer = setTimeout(function() { | |||
resizeTimer = null; | ||||
// Might be a text scaling operation, clear size caches. | ||||
d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null; | ||||
clearCaches(cm); | ||||
runInOp(cm, bind(regChange, cm)); | ||||
}, 100); | ||||
r4025 | } | |||
on(window, "resize", onResize); | ||||
// Above handler holds on to the editor and its data structures. | ||||
// Here we poll to unregister it when the editor is no longer in | ||||
// the document, so that it can be garbage-collected. | ||||
function unregister() { | ||||
for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {} | ||||
if (p) setTimeout(unregister, 5000); | ||||
else off(window, "resize", onResize); | ||||
} | ||||
setTimeout(unregister, 5000); | ||||
on(d.input, "keyup", operation(cm, function(e) { | ||||
r4042 | if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; | |||
r4025 | if (e.keyCode == 16) cm.doc.sel.shift = false; | |||
})); | ||||
on(d.input, "input", bind(fastPoll, cm)); | ||||
on(d.input, "keydown", operation(cm, onKeyDown)); | ||||
on(d.input, "keypress", operation(cm, onKeyPress)); | ||||
on(d.input, "focus", bind(onFocus, cm)); | ||||
on(d.input, "blur", bind(onBlur, cm)); | ||||
r1305 | ||||
r2861 | function drag_(e) { | |||
r4042 | if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return; | |||
r2861 | e_stop(e); | |||
} | ||||
r4025 | if (cm.options.dragDrop) { | |||
on(d.scroller, "dragstart", function(e){onDragStart(cm, e);}); | ||||
on(d.scroller, "dragenter", drag_); | ||||
on(d.scroller, "dragover", drag_); | ||||
on(d.scroller, "drop", operation(cm, onDrop)); | ||||
} | ||||
on(d.scroller, "paste", function(e){ | ||||
if (eventInWidget(d, e)) return; | ||||
focusInput(cm); | ||||
fastPoll(cm); | ||||
}); | ||||
on(d.input, "paste", function() { | ||||
cm.state.pasteIncoming = true; | ||||
fastPoll(cm); | ||||
}); | ||||
function prepareCopy() { | ||||
if (d.inaccurateSelection) { | ||||
d.prevInput = ""; | ||||
d.inaccurateSelection = false; | ||||
d.input.value = cm.getSelection(); | ||||
selectInput(d.input); | ||||
} | ||||
} | ||||
on(d.input, "cut", prepareCopy); | ||||
on(d.input, "copy", prepareCopy); | ||||
r2547 | ||||
// Needed to handle Tab key in KHTML | ||||
r4025 | if (khtml) on(d.sizer, "mouseup", function() { | |||
if (document.activeElement == d.input) d.input.blur(); | ||||
focusInput(cm); | ||||
r2547 | }); | |||
r4025 | } | |||
function eventInWidget(display, e) { | ||||
for (var n = e_target(e); n != display.wrapper; n = n.parentNode) { | ||||
r4042 | if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true; | |||
r4025 | } | |||
} | ||||
function posFromMouse(cm, e, liberal) { | ||||
var display = cm.display; | ||||
if (!liberal) { | ||||
var target = e_target(e); | ||||
if (target == display.scrollbarH || target == display.scrollbarH.firstChild || | ||||
target == display.scrollbarV || target == display.scrollbarV.firstChild || | ||||
r4042 | target == display.scrollbarFiller || target == display.gutterFiller) return null; | |||
r4025 | } | |||
var x, y, space = getRect(display.lineSpace); | ||||
// Fails unpredictably on IE[67] when mouse is dragged around quickly. | ||||
try { x = e.clientX; y = e.clientY; } catch (e) { return null; } | ||||
return coordsChar(cm, x - space.left, y - space.top); | ||||
} | ||||
var lastClick, lastDoubleClick; | ||||
function onMouseDown(e) { | ||||
r4042 | if (signalDOMEvent(this, e)) return; | |||
r4025 | var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel; | |||
sel.shift = e.shiftKey; | ||||
if (eventInWidget(display, e)) { | ||||
if (!webkit) { | ||||
display.scroller.draggable = false; | ||||
setTimeout(function(){display.scroller.draggable = true;}, 100); | ||||
} | ||||
return; | ||||
} | ||||
if (clickInGutter(cm, e)) return; | ||||
var start = posFromMouse(cm, e); | ||||
switch (e_button(e)) { | ||||
case 3: | ||||
if (captureMiddleClick) onContextMenu.call(cm, cm, e); | ||||
return; | ||||
case 2: | ||||
if (start) extendSelection(cm.doc, start); | ||||
setTimeout(bind(focusInput, cm), 20); | ||||
e_preventDefault(e); | ||||
return; | ||||
} | ||||
// For button 1, if it was clicked inside the editor | ||||
// (posFromMouse returning non-null), we have to adjust the | ||||
// selection. | ||||
if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;} | ||||
if (!cm.state.focused) onFocus(cm); | ||||
var now = +new Date, type = "single"; | ||||
if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) { | ||||
type = "triple"; | ||||
e_preventDefault(e); | ||||
setTimeout(bind(focusInput, cm), 20); | ||||
selectLine(cm, start.line); | ||||
} else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) { | ||||
type = "double"; | ||||
lastDoubleClick = {time: now, pos: start}; | ||||
e_preventDefault(e); | ||||
var word = findWordAt(getLine(doc, start.line).text, start); | ||||
extendSelection(cm.doc, word.from, word.to); | ||||
} else { lastClick = {time: now, pos: start}; } | ||||
var last = start; | ||||
if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) && | ||||
!posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") { | ||||
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); | ||||
extendSelection(cm.doc, start); | ||||
focusInput(cm); | ||||
r1606 | } | |||
r4025 | }); | |||
// 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); | ||||
return; | ||||
} | ||||
e_preventDefault(e); | ||||
if (type == "single") extendSelection(cm.doc, clipPos(doc, start)); | ||||
var startstart = sel.from, startend = sel.to, lastPos = start; | ||||
function doSelect(cur) { | ||||
if (posEq(lastPos, cur)) return; | ||||
lastPos = cur; | ||||
if (type == "single") { | ||||
extendSelection(cm.doc, clipPos(doc, start), cur); | ||||
return; | ||||
} | ||||
startstart = clipPos(doc, startstart); | ||||
startend = clipPos(doc, startend); | ||||
if (type == "double") { | ||||
var word = findWordAt(getLine(doc, cur.line).text, cur); | ||||
if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend); | ||||
else extendSelection(cm.doc, startstart, word.to); | ||||
} else if (type == "triple") { | ||||
if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0))); | ||||
else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0))); | ||||
r2547 | } | |||
} | ||||
r4025 | var editorSize = getRect(display.wrapper); | |||
// 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); | ||||
if (!cur) return; | ||||
if (!posEq(cur, last)) { | ||||
if (!cm.state.focused) onFocus(cm); | ||||
last = cur; | ||||
doSelect(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); | ||||
r2861 | } | |||
r4025 | } | |||
function done(e) { | ||||
counter = Infinity; | ||||
e_preventDefault(e); | ||||
focusInput(cm); | ||||
off(document, "mousemove", move); | ||||
off(document, "mouseup", up); | ||||
} | ||||
var move = operation(cm, function(e) { | ||||
if (!ie && !e_button(e)) done(e); | ||||
else extend(e); | ||||
}); | ||||
var up = operation(cm, done); | ||||
on(document, "mousemove", move); | ||||
on(document, "mouseup", up); | ||||
} | ||||
r4042 | function clickInGutter(cm, e) { | |||
var display = cm.display; | ||||
try { var mX = e.clientX, mY = e.clientY; } | ||||
catch(e) { return false; } | ||||
if (mX >= Math.floor(getRect(display.gutters).right)) return false; | ||||
e_preventDefault(e); | ||||
if (!hasHandler(cm, "gutterClick")) return true; | ||||
var lineBox = getRect(display.lineDiv); | ||||
if (mY > lineBox.bottom) return true; | ||||
mY -= lineBox.top - display.viewOffset; | ||||
for (var i = 0; i < cm.options.gutters.length; ++i) { | ||||
var g = display.gutters.childNodes[i]; | ||||
if (g && getRect(g).right >= mX) { | ||||
var line = lineAtHeight(cm.doc, mY); | ||||
var gutter = cm.options.gutters[i]; | ||||
signalLater(cm, "gutterClick", cm, line, gutter, e); | ||||
break; | ||||
} | ||||
} | ||||
return true; | ||||
} | ||||
// 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; | ||||
r4025 | function onDrop(e) { | |||
var cm = this; | ||||
r4042 | if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e)))) | |||
r4025 | return; | |||
e_preventDefault(e); | ||||
r4042 | if (ie) lastDrop = +new Date; | |||
r4025 | var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files; | |||
if (!pos || isReadOnly(cm)) return; | ||||
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 = function() { | ||||
text[i] = reader.result; | ||||
if (++read == n) { | ||||
pos = clipPos(cm.doc, pos); | ||||
makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around"); | ||||
} | ||||
}; | ||||
reader.readAsText(file); | ||||
}; | ||||
for (var i = 0; i < n; ++i) loadFile(files[i], i); | ||||
} else { | ||||
// Don't do a replace if the drop happened inside of the selected text. | ||||
if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) { | ||||
cm.state.draggingText(e); | ||||
// Ensure the editor is re-focused | ||||
setTimeout(bind(focusInput, cm), 20); | ||||
r1606 | return; | |||
} | ||||
r4025 | try { | |||
var text = e.dataTransfer.getData("Text"); | ||||
if (text) { | ||||
var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to; | ||||
setSelection(cm.doc, pos, pos); | ||||
if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste"); | ||||
cm.replaceSelection(text, null, "paste"); | ||||
focusInput(cm); | ||||
onFocus(cm); | ||||
r2861 | } | |||
} | ||||
r4025 | catch(e){} | |||
} | ||||
} | ||||
function onDragStart(cm, e) { | ||||
r4042 | if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; } | |||
if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return; | ||||
r4025 | ||||
var txt = cm.getSelection(); | ||||
e.dataTransfer.setData("Text", txt); | ||||
// 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. | ||||
r4042 | if (e.dataTransfer.setDragImage && !safari) { | |||
r4025 | var img = elt("img", null, null, "position: fixed; left: 0; top: 0;"); | |||
if (opera) { | ||||
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 (opera) img.parentNode.removeChild(img); | ||||
} | ||||
} | ||||
function setScrollTop(cm, val) { | ||||
if (Math.abs(cm.doc.scrollTop - val) < 2) return; | ||||
cm.doc.scrollTop = val; | ||||
if (!gecko) updateDisplay(cm, [], val); | ||||
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val; | ||||
if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val; | ||||
if (gecko) updateDisplay(cm, []); | ||||
r4042 | startWorker(cm, 100); | |||
r4025 | } | |||
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; | ||||
if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = 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; | ||||
function onScrollWheel(cm, 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; | ||||
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) { | ||||
for (var cur = e.target; cur != scroll; cur = cur.parentNode) { | ||||
if (cur.lineObj) { | ||||
cm.display.currentWheelTarget = cur; | ||||
break; | ||||
r2861 | } | |||
} | ||||
r4025 | } | |||
// 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 && !opera && 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; | ||||
} | ||||
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); | ||||
updateDisplay(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; | ||||
} | ||||
} | ||||
} | ||||
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 | ||||
if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false; | ||||
var doc = cm.doc, prevShift = doc.sel.shift, done = false; | ||||
try { | ||||
if (isReadOnly(cm)) cm.state.suppressEdits = true; | ||||
if (dropShift) doc.sel.shift = false; | ||||
done = bound(cm) != Pass; | ||||
} finally { | ||||
doc.sel.shift = prevShift; | ||||
cm.state.suppressEdits = false; | ||||
} | ||||
return done; | ||||
} | ||||
function allKeyMaps(cm) { | ||||
var maps = cm.state.keyMaps.slice(0); | ||||
if (cm.options.extraKeys) maps.push(cm.options.extraKeys); | ||||
maps.push(cm.options.keyMap); | ||||
return maps; | ||||
} | ||||
var maybeTransition; | ||||
function handleKeyBinding(cm, e) { | ||||
// Handle auto keymap transitions | ||||
var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto; | ||||
clearTimeout(maybeTransition); | ||||
if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() { | ||||
r4042 | if (getKeyMap(cm.options.keyMap) == startMap) { | |||
r4025 | cm.options.keyMap = (next.call ? next.call(null, cm) : next); | |||
r4042 | keyMapChanged(cm); | |||
} | ||||
r4025 | }, 50); | |||
var name = keyName(e, true), handled = false; | ||||
if (!name) return false; | ||||
var keymaps = allKeyMaps(cm); | ||||
if (e.shiftKey) { | ||||
// 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-'. | ||||
handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);}) | ||||
|| lookupKey(name, keymaps, function(b) { | ||||
r4042 | if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion) | |||
return doHandleBinding(cm, b); | ||||
r4025 | }); | |||
} else { | ||||
handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); }); | ||||
} | ||||
if (handled) { | ||||
e_preventDefault(e); | ||||
restartBlink(cm); | ||||
if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; } | ||||
r4042 | signalLater(cm, "keyHandled", cm, name, e); | |||
r4025 | } | |||
return handled; | ||||
} | ||||
function handleCharBinding(cm, e, ch) { | ||||
var handled = lookupKey("'" + ch + "'", allKeyMaps(cm), | ||||
function(b) { return doHandleBinding(cm, b, true); }); | ||||
if (handled) { | ||||
e_preventDefault(e); | ||||
restartBlink(cm); | ||||
r4042 | signalLater(cm, "keyHandled", cm, "'" + ch + "'", e); | |||
r4025 | } | |||
return handled; | ||||
} | ||||
var lastStoppedKey = null; | ||||
function onKeyDown(e) { | ||||
var cm = this; | ||||
if (!cm.state.focused) onFocus(cm); | ||||
if (ie && e.keyCode == 27) { e.returnValue = false; } | ||||
r4042 | if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; | |||
r4025 | var code = e.keyCode; | |||
// IE does strange things with escape. | ||||
cm.doc.sel.shift = code == 16 || e.shiftKey; | ||||
// First give onKeyEvent option a chance to handle this. | ||||
var handled = handleKeyBinding(cm, e); | ||||
if (opera) { | ||||
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(""); | ||||
} | ||||
} | ||||
function onKeyPress(e) { | ||||
var cm = this; | ||||
r4042 | if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return; | |||
r4025 | var keyCode = e.keyCode, charCode = e.charCode; | |||
if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;} | ||||
if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return; | ||||
var ch = String.fromCharCode(charCode == null ? keyCode : charCode); | ||||
if (this.options.electricChars && this.doc.mode.electricChars && | ||||
this.options.smartIndent && !isReadOnly(this) && | ||||
this.doc.mode.electricChars.indexOf(ch) > -1) | ||||
setTimeout(operation(cm, function() {indentLine(cm, cm.doc.sel.to.line, "smart");}), 75); | ||||
if (handleCharBinding(cm, e, ch)) return; | ||||
if (ie && !ie_lt9) cm.display.inputHasSelection = null; | ||||
fastPoll(cm); | ||||
} | ||||
function onFocus(cm) { | ||||
if (cm.options.readOnly == "nocursor") return; | ||||
if (!cm.state.focused) { | ||||
signal(cm, "focus", cm); | ||||
cm.state.focused = true; | ||||
if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1) | ||||
cm.display.wrapper.className += " CodeMirror-focused"; | ||||
resetInput(cm, true); | ||||
} | ||||
slowPoll(cm); | ||||
restartBlink(cm); | ||||
} | ||||
function onBlur(cm) { | ||||
if (cm.state.focused) { | ||||
signal(cm, "blur", cm); | ||||
cm.state.focused = false; | ||||
cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", ""); | ||||
} | ||||
clearInterval(cm.display.blinker); | ||||
setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150); | ||||
} | ||||
var detectingSelectAll; | ||||
function onContextMenu(cm, e) { | ||||
|
r4120 | if (signalDOMEvent(cm, e, "contextmenu")) return; | ||
r4025 | var display = cm.display, sel = cm.doc.sel; | |||
if (eventInWidget(display, e)) return; | ||||
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop; | ||||
if (!pos || opera) return; // Opera is difficult. | ||||
if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)) | ||||
operation(cm, setSelection)(cm.doc, pos, pos); | ||||
var oldCSS = display.input.style.cssText; | ||||
display.inputDiv.style.position = "absolute"; | ||||
display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) + | ||||
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" + | ||||
"border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);"; | ||||
focusInput(cm); | ||||
resetInput(cm, true); | ||||
// Adds "Select all" to context menu in FF | ||||
if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " "; | ||||
r4042 | function prepareSelectAllHack() { | |||
if (display.input.selectionStart != null) { | ||||
var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value); | ||||
display.prevInput = " "; | ||||
display.input.selectionStart = 1; display.input.selectionEnd = extval.length; | ||||
} | ||||
} | ||||
r4025 | function rehide() { | |||
display.inputDiv.style.position = "relative"; | ||||
display.input.style.cssText = oldCSS; | ||||
if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos; | ||||
slowPoll(cm); | ||||
// Try to detect the user choosing select-all | ||||
r4042 | if (display.input.selectionStart != null) { | |||
if (!ie || ie_lt9) prepareSelectAllHack(); | ||||
r4025 | clearTimeout(detectingSelectAll); | |||
r4042 | var i = 0, poll = function(){ | |||
r4025 | if (display.prevInput == " " && display.input.selectionStart == 0) | |||
operation(cm, commands.selectAll)(cm); | ||||
else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500); | ||||
else resetInput(cm); | ||||
}; | ||||
detectingSelectAll = setTimeout(poll, 200); | ||||
} | ||||
} | ||||
r4042 | if (ie && !ie_lt9) prepareSelectAllHack(); | |||
r4025 | if (captureMiddleClick) { | |||
e_stop(e); | ||||
var mouseup = function() { | ||||
off(window, "mouseup", mouseup); | ||||
setTimeout(rehide, 20); | ||||
}; | ||||
on(window, "mouseup", mouseup); | ||||
} else { | ||||
setTimeout(rehide, 50); | ||||
} | ||||
} | ||||
// UPDATING | ||||
r4042 | var changeEnd = CodeMirror.changeEnd = function(change) { | |||
r4025 | 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)); | ||||
r4042 | }; | |||
r4025 | ||||
// Make sure a position will be valid after the given change. | ||||
function clipPostChange(doc, change, pos) { | ||||
if (!posLess(change.from, pos)) return clipPos(doc, pos); | ||||
var diff = (change.text.length - 1) - (change.to.line - change.from.line); | ||||
if (pos.line > change.to.line + diff) { | ||||
var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1; | ||||
if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length); | ||||
return clipToLen(pos, getLine(doc, preLine).text.length); | ||||
} | ||||
if (pos.line == change.to.line + diff) | ||||
return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) + | ||||
getLine(doc, change.to.line).text.length - change.to.ch); | ||||
var inside = pos.line - change.from.line; | ||||
return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch)); | ||||
} | ||||
// Hint can be null|"end"|"start"|"around"|{anchor,head} | ||||
function computeSelAfterChange(doc, change, hint) { | ||||
if (hint && typeof hint == "object") // Assumed to be {anchor, head} object | ||||
return {anchor: clipPostChange(doc, change, hint.anchor), | ||||
head: clipPostChange(doc, change, hint.head)}; | ||||
if (hint == "start") return {anchor: change.from, head: change.from}; | ||||
var end = changeEnd(change); | ||||
if (hint == "around") return {anchor: change.from, head: end}; | ||||
if (hint == "end") return {anchor: end, head: end}; | ||||
// hint is null, leave the selection alone as much as possible | ||||
var adjustPos = function(pos) { | ||||
if (posLess(pos, change.from)) return pos; | ||||
if (!posLess(change.to, pos)) return end; | ||||
var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch; | ||||
if (pos.line == change.to.line) ch += end.ch - change.to.ch; | ||||
return Pos(line, ch); | ||||
}; | ||||
return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)}; | ||||
} | ||||
r4042 | function filterChange(doc, change, update) { | |||
r4025 | var obj = { | |||
canceled: false, | ||||
from: change.from, | ||||
to: change.to, | ||||
text: change.text, | ||||
origin: change.origin, | ||||
cancel: function() { this.canceled = true; } | ||||
}; | ||||
r4042 | 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; | ||||
}; | ||||
r4025 | 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}; | ||||
} | ||||
// Replace the range from from to to by the strings in replacement. | ||||
// change is a {from, to, text [, origin]} object | ||||
function makeChange(doc, change, selUpdate, ignoreReadOnly) { | ||||
if (doc.cm) { | ||||
if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly); | ||||
if (doc.cm.state.suppressEdits) return; | ||||
} | ||||
if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) { | ||||
r4042 | change = filterChange(doc, change, true); | |||
r4025 | 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 >= 1; --i) | ||||
makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]}); | ||||
if (split.length) | ||||
makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate); | ||||
} else { | ||||
makeChangeNoReadonly(doc, change, selUpdate); | ||||
} | ||||
} | ||||
function makeChangeNoReadonly(doc, change, selUpdate) { | ||||
var selAfter = computeSelAfterChange(doc, change, selUpdate); | ||||
addToHistory(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)); | ||||
}); | ||||
} | ||||
function makeChangeFromHistory(doc, type) { | ||||
if (doc.cm && doc.cm.state.suppressEdits) return; | ||||
var hist = doc.history; | ||||
var event = (type == "undo" ? hist.done : hist.undone).pop(); | ||||
if (!event) return; | ||||
var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter, | ||||
r4042 | anchorAfter: event.anchorBefore, headAfter: event.headBefore, | |||
generation: hist.generation}; | ||||
r4025 | (type == "undo" ? hist.undone : hist.done).push(anti); | |||
r4042 | hist.generation = event.generation || ++hist.maxGeneration; | |||
var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange"); | ||||
r4025 | ||||
for (var i = event.changes.length - 1; i >= 0; --i) { | ||||
var change = event.changes[i]; | ||||
change.origin = type; | ||||
r4042 | if (filter && !filterChange(doc, change, false)) { | |||
(type == "undo" ? hist.done : hist.undone).length = 0; | ||||
return; | ||||
} | ||||
r4025 | anti.changes.push(historyChangeFromChange(doc, change)); | |||
var after = i ? computeSelAfterChange(doc, change, null) | ||||
: {anchor: event.anchorBefore, head: event.headBefore}; | ||||
makeChangeSingleDoc(doc, change, after, mergeOldSpans(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, mergeOldSpans(doc, change)); | ||||
}); | ||||
} | ||||
} | ||||
function shiftDoc(doc, distance) { | ||||
function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);} | ||||
doc.first += distance; | ||||
if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance); | ||||
doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor); | ||||
doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to); | ||||
} | ||||
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, null); | ||||
if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter); | ||||
else updateDoc(doc, change, spans, selAfter); | ||||
} | ||||
function makeChangeSingleDocInEditor(cm, change, spans, selAfter) { | ||||
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(doc, getLine(doc, from.line))); | ||||
doc.iter(checkWidthStart, to.line + 1, function(line) { | ||||
if (line == display.maxLine) { | ||||
recomputeMaxLength = true; | ||||
return true; | ||||
} | ||||
}); | ||||
} | ||||
if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head)) | ||||
cm.curOp.cursorActivity = true; | ||||
updateDoc(doc, change, spans, selAfter, estimateHeight(cm)); | ||||
if (!cm.options.lineWrapping) { | ||||
doc.iter(checkWidthStart, from.line + change.text.length, function(line) { | ||||
var len = lineLength(doc, 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 | ||||
regChange(cm, from.line, to.line + 1, lendiff); | ||||
if (hasHandler(cm, "change")) { | ||||
var changeObj = {from: from, to: to, | ||||
text: change.text, | ||||
removed: change.removed, | ||||
origin: change.origin}; | ||||
if (cm.curOp.textChanged) { | ||||
for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {} | ||||
cur.next = changeObj; | ||||
} else cm.curOp.textChanged = changeObj; | ||||
} | ||||
} | ||||
function replaceRange(doc, code, from, to, origin) { | ||||
if (!to) to = from; | ||||
if (posLess(to, from)) { var tmp = to; to = from; from = tmp; } | ||||
if (typeof code == "string") code = splitLines(code); | ||||
makeChange(doc, {from: from, to: to, text: code, origin: origin}, null); | ||||
} | ||||
// POSITION OBJECT | ||||
function Pos(line, ch) { | ||||
if (!(this instanceof Pos)) return new Pos(line, ch); | ||||
this.line = line; this.ch = ch; | ||||
} | ||||
CodeMirror.Pos = Pos; | ||||
function posEq(a, b) {return a.line == b.line && a.ch == b.ch;} | ||||
function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);} | ||||
function copyPos(x) {return Pos(x.line, x.ch);} | ||||
// SELECTION | ||||
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;} | ||||
// If shift is held, this will move the selection anchor. Otherwise, | ||||
// it'll set the whole selection. | ||||
function extendSelection(doc, pos, other, bias) { | ||||
if (doc.sel.shift || doc.sel.extend) { | ||||
var anchor = doc.sel.anchor; | ||||
if (other) { | ||||
var posBefore = posLess(pos, anchor); | ||||
if (posBefore != posLess(other, anchor)) { | ||||
anchor = pos; | ||||
pos = other; | ||||
} else if (posBefore != posLess(pos, other)) { | ||||
pos = other; | ||||
r1305 | } | |||
} | ||||
r4025 | setSelection(doc, anchor, pos, bias); | |||
} else { | ||||
setSelection(doc, pos, other || pos, bias); | ||||
} | ||||
if (doc.cm) doc.cm.curOp.userSelChange = true; | ||||
} | ||||
function filterSelectionChange(doc, anchor, head) { | ||||
var obj = {anchor: anchor, head: head}; | ||||
signal(doc, "beforeSelectionChange", doc, obj); | ||||
if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj); | ||||
obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head); | ||||
return obj; | ||||
} | ||||
// Update the selection. Last two args are only used by | ||||
// updateDoc, since they have to be expressed in the line | ||||
// numbers before the update. | ||||
function setSelection(doc, anchor, head, bias, checkAtomic) { | ||||
if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) { | ||||
var filtered = filterSelectionChange(doc, anchor, head); | ||||
head = filtered.head; | ||||
anchor = filtered.anchor; | ||||
} | ||||
var sel = doc.sel; | ||||
sel.goalColumn = null; | ||||
// Skip over atomic spans. | ||||
if (checkAtomic || !posEq(anchor, sel.anchor)) | ||||
anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push"); | ||||
if (checkAtomic || !posEq(head, sel.head)) | ||||
head = skipAtomic(doc, head, bias, checkAtomic != "push"); | ||||
if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return; | ||||
sel.anchor = anchor; sel.head = head; | ||||
var inv = posLess(head, anchor); | ||||
sel.from = inv ? head : anchor; | ||||
sel.to = inv ? anchor : head; | ||||
if (doc.cm) | ||||
doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged = | ||||
doc.cm.curOp.cursorActivity = true; | ||||
signalLater(doc, "cursorActivity", doc); | ||||
} | ||||
function reCheckSelection(cm) { | ||||
setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push"); | ||||
} | ||||
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;} | ||||
} | ||||
r2547 | } | |||
r4025 | if (!m.atomic) continue; | |||
var newPos = m.find()[dir < 0 ? "from" : "to"]; | ||||
if (posEq(newPos, curPos)) { | ||||
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; | ||||
r2547 | } | |||
r1305 | } | |||
r2547 | } | |||
r4025 | return curPos; | |||
} | ||||
} | ||||
// SCROLLING | ||||
function scrollCursorIntoView(cm) { | ||||
r4042 | var coords = scrollPosIntoView(cm, cm.doc.sel.head, cm.options.cursorScrollMargin); | |||
r4025 | if (!cm.state.focused) return; | |||
r4042 | var display = cm.display, box = getRect(display.sizer), doScroll = null; | |||
if (coords.top + box.top < 0) doScroll = true; | ||||
else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false; | ||||
r4025 | if (doScroll != null && !phantom) { | |||
var hidden = display.cursor.style.display == "none"; | ||||
if (hidden) { | ||||
display.cursor.style.display = ""; | ||||
display.cursor.style.left = coords.left + "px"; | ||||
display.cursor.style.top = (coords.top - display.viewOffset) + "px"; | ||||
r1305 | } | |||
r4025 | display.cursor.scrollIntoView(doScroll); | |||
if (hidden) display.cursor.style.display = "none"; | ||||
} | ||||
} | ||||
function scrollPosIntoView(cm, pos, margin) { | ||||
if (margin == null) margin = 0; | ||||
for (;;) { | ||||
var changed = false, coords = cursorCoords(cm, pos); | ||||
var scrollPos = calculateScrollPos(cm, coords.left, coords.top - margin, coords.left, coords.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; | ||||
r1606 | } | |||
r4025 | if (scrollPos.scrollLeft != null) { | |||
setScrollLeft(cm, scrollPos.scrollLeft); | ||||
if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true; | ||||
r1305 | } | |||
r4025 | if (!changed) return coords; | |||
} | ||||
} | ||||
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); | ||||
} | ||||
function calculateScrollPos(cm, x1, y1, x2, y2) { | ||||
r4042 | var display = cm.display, snapMargin = textHeight(cm.display); | |||
r4025 | if (y1 < 0) y1 = 0; | |||
var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {}; | ||||
var docBottom = cm.doc.height + paddingVert(display); | ||||
r4042 | var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin; | |||
r4025 | 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 screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft; | ||||
x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth; | ||||
var gutterw = display.gutters.offsetWidth; | ||||
var atLeft = x1 < gutterw + 10; | ||||
if (x1 < screenleft + gutterw || atLeft) { | ||||
if (atLeft) x1 = 0; | ||||
result.scrollLeft = Math.max(0, x1 - 10 - gutterw); | ||||
} else if (x2 > screenw + screenleft - 3) { | ||||
result.scrollLeft = x2 + 10 - screenw; | ||||
} | ||||
return result; | ||||
} | ||||
function updateScrollPos(cm, left, top) { | ||||
cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left, | ||||
scrollTop: top == null ? cm.doc.scrollTop : top}; | ||||
} | ||||
function addToScrollPos(cm, left, top) { | ||||
var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop}); | ||||
var scroll = cm.display.scroller; | ||||
pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top)); | ||||
pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left)); | ||||
} | ||||
// API UTILITIES | ||||
function indentLine(cm, n, how, aggressive) { | ||||
var doc = cm.doc; | ||||
r4042 | if (how == null) how = "add"; | |||
r4025 | if (how == "smart") { | |||
if (!cm.doc.mode.indent) how = "prev"; | ||||
else var state = getStateBefore(cm, n); | ||||
} | ||||
var tabSize = cm.options.tabSize; | ||||
var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize); | ||||
var curSpaceString = line.text.match(/^\s*/)[0], indentation; | ||||
if (how == "smart") { | ||||
indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text); | ||||
if (indentation == Pass) { | ||||
if (!aggressive) return; | ||||
how = "prev"; | ||||
r1305 | } | |||
r4025 | } | |||
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; | ||||
r4042 | } else if (typeof how == "number") { | |||
indentation = curSpace + how; | ||||
r4025 | } | |||
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(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input"); | ||||
line.stateAfter = null; | ||||
} | ||||
function changeLine(cm, handle, op) { | ||||
var no = handle, line = handle, doc = cm.doc; | ||||
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle)); | ||||
else no = lineNo(handle); | ||||
if (no == null) return null; | ||||
if (op(line, no)) regChange(cm, no, no + 1); | ||||
else return null; | ||||
return line; | ||||
} | ||||
function findPosH(doc, pos, dir, unit, visually) { | ||||
r4042 | var line = pos.line, ch = pos.ch, origDir = dir; | |||
r4025 | 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; | ||||
r2547 | return true; | |||
} | ||||
r4025 | ||||
if (unit == "char") moveOnce(); | ||||
else if (unit == "column") moveOnce(true); | ||||
else if (unit == "word" || unit == "group") { | ||||
var sawType = null, group = unit == "group"; | ||||
for (var first = true;; first = false) { | ||||
if (dir < 0 && !moveOnce(!first)) break; | ||||
var cur = lineObj.text.charAt(ch) || "\n"; | ||||
var type = isWordChar(cur) ? "w" | ||||
: !group ? null | ||||
: /\s/.test(cur) ? null | ||||
: "p"; | ||||
if (sawType && sawType != type) { | ||||
if (dir < 0) {dir = 1; moveOnce();} | ||||
break; | ||||
r2861 | } | |||
r4025 | if (type) sawType = type; | |||
if (dir > 0 && !moveOnce(!first)) break; | ||||
r2547 | } | |||
r4025 | } | |||
r4042 | var result = skipAtomic(doc, Pos(line, ch), origDir, true); | |||
r4025 | if (!possible) result.hitSide = true; | |||
return result; | ||||
} | ||||
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; | ||||
} | ||||
function findWordAt(line, pos) { | ||||
var start = pos.ch, end = pos.ch; | ||||
if (line) { | ||||
|
r4120 | if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end; | ||
r4025 | var startChar = line.charAt(start); | |||
var check = isWordChar(startChar) ? isWordChar | ||||
: /\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 {from: Pos(pos.line, start), to: Pos(pos.line, end)}; | ||||
} | ||||
function selectLine(cm, line) { | ||||
extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0))); | ||||
} | ||||
// PROTOTYPE | ||||
// The publicly visible API. Note that operation(null, f) means | ||||
// 'wrap f in an operation, performed on its `this` parameter' | ||||
CodeMirror.prototype = { | ||||
r4042 | constructor: CodeMirror, | |||
r4025 | focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);}, | |||
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"](map); | ||||
}, | ||||
removeKeyMap: function(map) { | ||||
var maps = this.state.keyMaps; | ||||
for (var i = 0; i < maps.length; ++i) | ||||
|
r4120 | if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) { | ||
r4025 | maps.splice(i, 1); | |||
return true; | ||||
} | ||||
}, | ||||
addOverlay: operation(null, 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: operation(null, function(spec) { | ||||
var overlays = this.state.overlays; | ||||
for (var i = 0; i < overlays.length; ++i) { | ||||
r4042 | var cur = overlays[i].modeSpec; | |||
if (cur == spec || typeof spec == "string" && cur.name == spec) { | ||||
r4025 | overlays.splice(i, 1); | |||
this.state.modeGen++; | ||||
regChange(this); | ||||
return; | ||||
} | ||||
r2547 | } | |||
r4025 | }), | |||
indentLine: operation(null, function(n, dir, aggressive) { | ||||
r4042 | if (typeof dir != "string" && typeof dir != "number") { | |||
r4025 | if (dir == null) dir = this.options.smartIndent ? "smart" : "prev"; | |||
else dir = dir ? "add" : "subtract"; | ||||
r1305 | } | |||
r4025 | if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive); | |||
}), | ||||
indentSelection: operation(null, function(how) { | ||||
var sel = this.doc.sel; | ||||
if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how); | ||||
var e = sel.to.line - (sel.to.ch ? 0 : 1); | ||||
for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how); | ||||
}), | ||||
// Fetch the parser token for a given character. Useful for hacks | ||||
// that want to inspect the mode state (say, for completion). | ||||
r4042 | getTokenAt: function(pos, precise) { | |||
r4025 | var doc = this.doc; | |||
pos = clipPos(doc, pos); | ||||
r4042 | var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode; | |||
r4025 | var line = getLine(doc, pos.line); | |||
var stream = new StringStream(line.text, this.options.tabSize); | ||||
while (stream.pos < pos.ch && !stream.eol()) { | ||||
stream.start = stream.pos; | ||||
var style = mode.token(stream, state); | ||||
r1305 | } | |||
r4025 | return {start: stream.start, | |||
end: stream.pos, | ||||
string: stream.current(), | ||||
className: style || null, // Deprecated, use 'type' instead | ||||
type: style || null, | ||||
state: state}; | ||||
}, | ||||
r4042 | 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; | ||||
|
r4120 | if (ch == 0) return styles[2]; | ||
r4042 | 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 return styles[mid * 2 + 2]; | ||||
} | ||||
}, | ||||
|
r4120 | 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) { | ||||
if (!helpers.hasOwnProperty(type)) return; | ||||
var help = helpers[type], mode = this.getModeAt(pos); | ||||
return mode[type] && help[mode[type]] || | ||||
mode.helperType && help[mode.helperType] || | ||||
help[mode.name]; | ||||
}, | ||||
r4042 | getStateAfter: function(line, precise) { | |||
r4025 | var doc = this.doc; | |||
line = clipLine(doc, line == null ? doc.first + doc.size - 1: line); | ||||
r4042 | return getStateBefore(this, line + 1, precise); | |||
r4025 | }, | |||
cursorCoords: function(start, mode) { | ||||
var pos, sel = this.doc.sel; | ||||
if (start == null) pos = sel.head; | ||||
else if (typeof start == "object") pos = clipPos(this.doc, start); | ||||
else pos = start ? sel.from : sel.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); | ||||
}, | ||||
r4042 | 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, 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; } | ||||
var lineObj = getLine(this.doc, line); | ||||
return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top + | ||||
(end ? lineObj.height : 0); | ||||
}, | ||||
r4025 | defaultTextHeight: function() { return textHeight(this.display); }, | |||
defaultCharWidth: function() { return charWidth(this.display); }, | ||||
setGutterMarker: operation(null, function(line, gutterID, value) { | ||||
return changeLine(this, line, function(line) { | ||||
var markers = line.gutterMarkers || (line.gutterMarkers = {}); | ||||
markers[gutterID] = value; | ||||
if (!value && isEmpty(markers)) line.gutterMarkers = null; | ||||
return true; | ||||
r2547 | }); | |||
r4025 | }), | |||
clearGutter: operation(null, 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; | ||||
regChange(cm, i, i + 1); | ||||
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null; | ||||
r2547 | } | |||
++i; | ||||
}); | ||||
r4025 | }), | |||
addLineClass: operation(null, function(handle, where, cls) { | ||||
return changeLine(this, handle, function(line) { | ||||
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; | ||||
if (!line[prop]) line[prop] = cls; | ||||
r4042 | else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false; | |||
r4025 | else line[prop] += " " + cls; | |||
r2547 | return true; | |||
r4025 | }); | |||
}), | ||||
removeLineClass: operation(null, function(handle, where, cls) { | ||||
return changeLine(this, handle, function(line) { | ||||
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass"; | ||||
var cur = line[prop]; | ||||
if (!cur) return false; | ||||
else if (cls == null) line[prop] = null; | ||||
else { | ||||
r4042 | var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)")); | |||
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; | ||||
r2547 | } | |||
r4025 | return true; | |||
r2861 | }); | |||
r4025 | }), | |||
addLineWidget: operation(null, function(handle, node, options) { | ||||
return addLineWidget(this, handle, node, options); | ||||
}), | ||||
removeLineWidget: function(widget) { widget.clear(); }, | ||||
lineInfo: function(line) { | ||||
r1305 | if (typeof line == "number") { | |||
r4025 | if (!isLine(this.doc, line)) return null; | |||
r1305 | var n = line; | |||
r4025 | line = getLine(this.doc, line); | |||
r1305 | if (!line) return null; | |||
r2547 | } else { | |||
var n = lineNo(line); | ||||
if (n == null) return null; | ||||
r1305 | } | |||
r4025 | 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.showingFrom, to: this.display.showingTo};}, | ||||
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"; | ||||
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; | ||||
r2547 | } | |||
r4042 | node.style.top = top + "px"; | |||
r4025 | 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"; | ||||
r2547 | } | |||
r4025 | if (scroll) | |||
scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight); | ||||
}, | ||||
triggerOnKeyDown: operation(null, onKeyDown), | ||||
execCommand: function(cmd) {return commands[cmd](this);}, | ||||
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; | ||||
r2547 | } | |||
r4025 | return cur; | |||
}, | ||||
moveH: operation(null, function(dir, unit) { | ||||
var sel = this.doc.sel, pos; | ||||
if (sel.shift || sel.extend || posEq(sel.from, sel.to)) | ||||
pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually); | ||||
else | ||||
pos = dir < 0 ? sel.from : sel.to; | ||||
extendSelection(this.doc, pos, pos, dir); | ||||
}), | ||||
deleteH: operation(null, function(dir, unit) { | ||||
var sel = this.doc.sel; | ||||
if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete"); | ||||
else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete"); | ||||
this.curOp.userSelChange = true; | ||||
}), | ||||
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; | ||||
r1606 | } | |||
r4025 | return cur; | |||
}, | ||||
moveV: operation(null, function(dir, unit) { | ||||
var sel = this.doc.sel; | ||||
var pos = cursorCoords(this, sel.head, "div"); | ||||
if (sel.goalColumn != null) pos.left = sel.goalColumn; | ||||
var target = findPosV(this, pos, dir, unit); | ||||
if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top); | ||||
extendSelection(this.doc, target, target, dir); | ||||
sel.goalColumn = pos.left; | ||||
}), | ||||
r4042 | toggleOverwrite: function(value) { | |||
if (value != null && value == this.state.overwrite) return; | ||||
r4025 | if (this.state.overwrite = !this.state.overwrite) | |||
this.display.cursor.className += " CodeMirror-overwrite"; | ||||
else | ||||
this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", ""); | ||||
}, | ||||
hasFocus: function() { return this.state.focused; }, | ||||
scrollTo: operation(null, function(x, y) { | ||||
updateScrollPos(this, x, y); | ||||
}), | ||||
getScrollInfo: function() { | ||||
var scroller = this.display.scroller, co = scrollerCutOff; | ||||
return {left: scroller.scrollLeft, top: scroller.scrollTop, | ||||
height: scroller.scrollHeight - co, width: scroller.scrollWidth - co, | ||||
clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co}; | ||||
}, | ||||
scrollIntoView: operation(null, function(pos, margin) { | ||||
if (typeof pos == "number") pos = Pos(pos, 0); | ||||
if (!margin) margin = 0; | ||||
var coords = pos; | ||||
if (!pos || pos.line != null) { | ||||
this.curOp.scrollToPos = pos ? clipPos(this.doc, pos) : this.doc.sel.head; | ||||
this.curOp.scrollToPosMargin = margin; | ||||
coords = cursorCoords(this, this.curOp.scrollToPos); | ||||
r1305 | } | |||
r4025 | var sPos = calculateScrollPos(this, coords.left, coords.top - margin, coords.right, coords.bottom + margin); | |||
updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop); | ||||
}), | ||||
|
r4120 | setSize: operation(null, function(width, height) { | ||
r4025 | function interpret(val) { | |||
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val; | ||||
r2547 | } | |||
r4025 | if (width != null) this.display.wrapper.style.width = interpret(width); | |||
if (height != null) this.display.wrapper.style.height = interpret(height); | ||||
|
r4120 | if (this.options.lineWrapping) | ||
this.display.measureLineCache.length = this.display.measureLineCachePos = 0; | ||||
this.curOp.forceUpdate = true; | ||||
}), | ||||
r4025 | ||||
operation: function(f){return runInOp(this, f);}, | ||||
refresh: operation(null, function() { | ||||
clearCaches(this); | ||||
updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop); | ||||
regChange(this); | ||||
}), | ||||
swapDoc: operation(null, function(doc) { | ||||
var old = this.doc; | ||||
old.cm = null; | ||||
attachDoc(this, doc); | ||||
clearCaches(this); | ||||
resetInput(this, true); | ||||
updateScrollPos(this, doc.scrollLeft, doc.scrollTop); | ||||
return old; | ||||
}), | ||||
getInputField: function(){return this.display.input;}, | ||||
getWrapperElement: function(){return this.display.wrapper;}, | ||||
getScrollerElement: function(){return this.display.scroller;}, | ||||
getGutterElement: function(){return this.display.gutters;} | ||||
}; | ||||
|
r4120 | eventMixin(CodeMirror); | ||
r4025 | ||||
// OPTION DEFAULTS | ||||
var optionHandlers = CodeMirror.optionHandlers = {}; | ||||
r1305 | ||||
// The default configuration options. | ||||
r4025 | var defaults = CodeMirror.defaults = {}; | |||
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; | ||||
} | ||||
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) { | ||||
loadMode(cm); | ||||
clearCaches(cm); | ||||
regChange(cm); | ||||
}, true); | ||||
option("electricChars", true); | ||||
option("rtlMoveVisually", !windows); | ||||
option("theme", "default", function(cm) { | ||||
themeChanged(cm); | ||||
guttersChanged(cm); | ||||
}, true); | ||||
option("keyMap", "default", keyMapChanged); | ||||
option("extraKeys", null); | ||||
option("onKeyEvent", null); | ||||
option("onDragEvent", 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); | ||||
r4042 | option("coverGutterNextToScrollbar", false, updateScrollbars, true); | |||
r4025 | 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("readOnly", false, function(cm, val) { | ||||
if (val == "nocursor") {onBlur(cm); cm.display.input.blur();} | ||||
else if (!val) resetInput(cm, true); | ||||
}); | ||||
option("dragDrop", true); | ||||
option("cursorBlinkRate", 530); | ||||
r4042 | option("cursorScrollMargin", 0); | |||
r4025 | option("cursorHeight", 1); | |||
option("workTime", 100); | ||||
option("workDelay", 100); | ||||
option("flattenSpans", true); | ||||
option("pollInterval", 100); | ||||
option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;}); | ||||
option("historyEventDelay", 500); | ||||
option("viewportMargin", 10, function(cm){cm.refresh();}, true); | ||||
option("maxHighlightLength", 10000, function(cm){loadMode(cm); cm.refresh();}, true); | ||||
option("moveInputWithCursor", true, function(cm, val) { | ||||
if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0; | ||||
}); | ||||
option("tabindex", null, function(cm, val) { | ||||
cm.display.input.tabIndex = val || ""; | ||||
}); | ||||
option("autofocus", null); | ||||
// MODE DEFINITION AND QUERYING | ||||
r2547 | ||||
r1305 | // Known modes, by name and by MIME | |||
r2547 | var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {}; | |||
r4025 | ||||
r1305 | CodeMirror.defineMode = function(name, mode) { | |||
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name; | ||||
r2547 | if (arguments.length > 2) { | |||
mode.dependencies = []; | ||||
for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]); | ||||
} | ||||
r1305 | modes[name] = mode; | |||
}; | ||||
r4025 | ||||
r1305 | CodeMirror.defineMIME = function(mime, spec) { | |||
mimeModes[mime] = spec; | ||||
}; | ||||
r4025 | ||||
r2547 | CodeMirror.resolveMode = function(spec) { | |||
r4042 | if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) { | |||
r1305 | spec = mimeModes[spec]; | |||
r4042 | } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) { | |||
var found = mimeModes[spec.name]; | ||||
spec = createObj(found, spec); | ||||
spec.name = found.name; | ||||
} else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) { | ||||
r2547 | return CodeMirror.resolveMode("application/xml"); | |||
r4042 | } | |||
r2547 | if (typeof spec == "string") return {name: spec}; | |||
else return spec || {name: "null"}; | ||||
}; | ||||
r4025 | ||||
r2547 | CodeMirror.getMode = function(options, spec) { | |||
|
r4120 | var spec = CodeMirror.resolveMode(spec); | ||
r2547 | var mfactory = modes[spec.name]; | |||
if (!mfactory) return CodeMirror.getMode(options, "text/plain"); | ||||
r2861 | var modeObj = mfactory(options, spec); | |||
if (modeExtensions.hasOwnProperty(spec.name)) { | ||||
var exts = modeExtensions[spec.name]; | ||||
r4025 | for (var prop in exts) { | |||
if (!exts.hasOwnProperty(prop)) continue; | ||||
if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop]; | ||||
modeObj[prop] = exts[prop]; | ||||
} | ||||
r2861 | } | |||
modeObj.name = spec.name; | ||||
|
r4120 | |||
r2861 | return modeObj; | |||
r1606 | }; | |||
r4025 | ||||
CodeMirror.defineMode("null", function() { | ||||
return {token: function(stream) {stream.skipToEnd();}}; | ||||
}); | ||||
CodeMirror.defineMIME("text/plain", "null"); | ||||
r3036 | ||||
r2861 | var modeExtensions = CodeMirror.modeExtensions = {}; | |||
CodeMirror.extendMode = function(mode, properties) { | ||||
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {}); | ||||
r4025 | copyObj(properties, exts); | |||
r2861 | }; | |||
r4025 | // EXTENSIONS | |||
CodeMirror.defineExtension = function(name, func) { | ||||
CodeMirror.prototype[name] = func; | ||||
r2547 | }; | |||
r4025 | CodeMirror.defineDocExtension = function(name, func) { | |||
Doc.prototype[name] = func; | ||||
r1305 | }; | |||
r4025 | CodeMirror.defineOption = option; | |||
var initHooks = []; | ||||
CodeMirror.defineInitHook = function(f) {initHooks.push(f);}; | ||||
|
r4120 | var helpers = CodeMirror.helpers = {}; | ||
CodeMirror.registerHelper = function(type, name, value) { | ||||
if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {}; | ||||
helpers[type][name] = value; | ||||
}; | ||||
// UTILITIES | ||||
CodeMirror.isWordChar = isWordChar; | ||||
r4025 | // MODE STATE HANDLING | |||
r2861 | ||||
r1305 | // Utility functions for working with state. Exported because modes | |||
// sometimes need to do this. | ||||
function copyState(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; | ||||
} | ||||
r2547 | CodeMirror.copyState = copyState; | |||
r4025 | ||||
r1305 | function startState(mode, a1, a2) { | |||
return mode.startState ? mode.startState(a1, a2) : true; | ||||
} | ||||
r2547 | CodeMirror.startState = startState; | |||
r4025 | ||||
r2861 | CodeMirror.innerMode = function(mode, state) { | |||
while (mode.innerMode) { | ||||
var info = mode.innerMode(state); | ||||
|
r4120 | if (!info || info.mode == mode) break; | ||
r2861 | state = info.state; | |||
mode = info.mode; | ||||
} | ||||
return info || {mode: mode, state: state}; | ||||
}; | ||||
r1305 | ||||
r4025 | // STANDARD COMMANDS | |||
var commands = CodeMirror.commands = { | ||||
selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));}, | ||||
killLine: function(cm) { | ||||
var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to); | ||||
if (!sel && cm.getLine(from.line).length == from.ch) | ||||
cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete"); | ||||
else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete"); | ||||
}, | ||||
deleteLine: function(cm) { | ||||
var l = cm.getCursor().line; | ||||
cm.replaceRange("", Pos(l, 0), Pos(l), "+delete"); | ||||
}, | ||||
r4042 | delLineLeft: function(cm) { | |||
var cur = cm.getCursor(); | ||||
cm.replaceRange("", Pos(cur.line, 0), cur, "+delete"); | ||||
}, | ||||
r4025 | undo: function(cm) {cm.undo();}, | |||
redo: function(cm) {cm.redo();}, | ||||
goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));}, | ||||
goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));}, | ||||
goLineStart: function(cm) { | ||||
cm.extendSelection(lineStart(cm, cm.getCursor().line)); | ||||
}, | ||||
goLineStartSmart: function(cm) { | ||||
var cur = cm.getCursor(), start = lineStart(cm, cur.line); | ||||
var line = cm.getLineHandle(start.line); | ||||
var order = getOrder(line); | ||||
if (!order || order[0].level == 0) { | ||||
var firstNonWS = Math.max(0, line.text.search(/\S/)); | ||||
var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch; | ||||
cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS)); | ||||
} else cm.extendSelection(start); | ||||
}, | ||||
goLineEnd: function(cm) { | ||||
cm.extendSelection(lineEnd(cm, cm.getCursor().line)); | ||||
}, | ||||
goLineRight: function(cm) { | ||||
var top = cm.charCoords(cm.getCursor(), "div").top + 5; | ||||
cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div")); | ||||
}, | ||||
goLineLeft: function(cm) { | ||||
var top = cm.charCoords(cm.getCursor(), "div").top + 5; | ||||
cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div")); | ||||
}, | ||||
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", "end", "+input");}, | ||||
defaultTab: function(cm) { | ||||
if (cm.somethingSelected()) cm.indentSelection("add"); | ||||
else cm.replaceSelection("\t", "end", "+input"); | ||||
}, | ||||
transposeChars: function(cm) { | ||||
var cur = cm.getCursor(), line = cm.getLine(cur.line); | ||||
if (cur.ch > 0 && cur.ch < line.length - 1) | ||||
cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1), | ||||
Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1)); | ||||
}, | ||||
newlineAndIndent: function(cm) { | ||||
operation(cm, function() { | ||||
cm.replaceSelection("\n", "end", "+input"); | ||||
cm.indentLine(cm.getCursor().line, null, true); | ||||
})(); | ||||
}, | ||||
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", "Tab": "defaultTab", "Shift-Tab": "indentAuto", | ||||
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite" | ||||
}; | ||||
// Note that the save and find-related commands aren't defined by | ||||
// default. 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", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd", | ||||
"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", | ||||
fallthrough: "basic" | ||||
}; | ||||
keyMap.macDefault = { | ||||
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo", | ||||
"Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft", | ||||
"Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "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", | ||||
r4042 | "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft", | |||
r4025 | fallthrough: ["basic", "emacsy"] | |||
}; | ||||
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault; | ||||
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 DISPATCH | ||||
function getKeyMap(val) { | ||||
if (typeof val == "string") return keyMap[val]; | ||||
else return val; | ||||
} | ||||
function lookupKey(name, maps, handle) { | ||||
function lookup(map) { | ||||
map = getKeyMap(map); | ||||
var found = map[name]; | ||||
if (found === false) return "stop"; | ||||
if (found != null && handle(found)) return true; | ||||
if (map.nofallthrough) return "stop"; | ||||
var fallthrough = map.fallthrough; | ||||
if (fallthrough == null) return false; | ||||
if (Object.prototype.toString.call(fallthrough) != "[object Array]") | ||||
return lookup(fallthrough); | ||||
for (var i = 0, e = fallthrough.length; i < e; ++i) { | ||||
var done = lookup(fallthrough[i]); | ||||
if (done) return done; | ||||
} | ||||
return false; | ||||
} | ||||
for (var i = 0; i < maps.length; ++i) { | ||||
var done = lookup(maps[i]); | ||||
r4042 | if (done) return done != "stop"; | |||
r4025 | } | |||
} | ||||
function isModifierKey(event) { | ||||
var name = keyNames[event.keyCode]; | ||||
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod"; | ||||
} | ||||
function keyName(event, noShift) { | ||||
if (opera && event.keyCode == 34 && event["char"]) return false; | ||||
var name = keyNames[event.keyCode]; | ||||
if (name == null || event.altGraphKey) return false; | ||||
if (event.altKey) name = "Alt-" + name; | ||||
if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name; | ||||
if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name; | ||||
if (!noShift && event.shiftKey) name = "Shift-" + name; | ||||
return name; | ||||
} | ||||
CodeMirror.lookupKey = lookupKey; | ||||
CodeMirror.isModifierKey = isModifierKey; | ||||
CodeMirror.keyName = keyName; | ||||
// FROMTEXTAREA | ||||
CodeMirror.fromTextArea = function(textarea, options) { | ||||
if (!options) 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 = document.body; | ||||
// doc.activeElement occasionally throws on IE | ||||
try { hasFocus = document.activeElement; } catch(e) {} | ||||
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) {} | ||||
} | ||||
} | ||||
textarea.style.display = "none"; | ||||
var cm = CodeMirror(function(node) { | ||||
textarea.parentNode.insertBefore(node, textarea.nextSibling); | ||||
}, options); | ||||
cm.save = save; | ||||
cm.getTextArea = function() { return textarea; }; | ||||
cm.toTextArea = function() { | ||||
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; | ||||
} | ||||
}; | ||||
return cm; | ||||
}; | ||||
// STRING STREAM | ||||
// Fed to the mode parsers, provides helper functions to make | ||||
// parsers more succinct. | ||||
r1305 | // The character stream used by a mode's parser. | |||
r2547 | function StringStream(string, tabSize) { | |||
r1305 | this.pos = this.start = 0; | |||
this.string = string; | ||||
r2547 | this.tabSize = tabSize || 8; | |||
r4025 | this.lastColumnPos = this.lastColumnValue = 0; | |||
} | ||||
r1305 | StringStream.prototype = { | |||
eol: function() {return this.pos >= this.string.length;}, | ||||
sol: function() {return this.pos == 0;}, | ||||
r2861 | peek: function() {return this.string.charAt(this.pos) || undefined;}, | |||
r1305 | 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) { | ||||
r1606 | var start = this.pos; | |||
r1305 | 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;}, | ||||
r4025 | 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; | ||||
}, | ||||
r2547 | indentation: function() {return countColumn(this.string, null, this.tabSize);}, | |||
r1305 | match: function(pattern, consume, caseInsensitive) { | |||
if (typeof pattern == "string") { | ||||
r2861 | var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;}; | |||
r4025 | var substr = this.string.substr(this.pos, pattern.length); | |||
if (cased(substr) == cased(pattern)) { | ||||
r1305 | if (consume !== false) this.pos += pattern.length; | |||
return true; | ||||
} | ||||
r2547 | } else { | |||
r1305 | var match = this.string.slice(this.pos).match(pattern); | |||
r2861 | if (match && match.index > 0) return null; | |||
r1305 | if (match && consume !== false) this.pos += match[0].length; | |||
return match; | ||||
} | ||||
}, | ||||
current: function(){return this.string.slice(this.start, this.pos);} | ||||
}; | ||||
r1606 | CodeMirror.StringStream = StringStream; | |||
r1305 | ||||
r4025 | // TEXTMARKERS | |||
function TextMarker(doc, type) { | ||||
this.lines = []; | ||||
this.type = type; | ||||
this.doc = doc; | ||||
} | ||||
CodeMirror.TextMarker = TextMarker; | ||||
|
r4120 | eventMixin(TextMarker); | ||
r4025 | ||||
TextMarker.prototype.clear = function() { | ||||
if (this.explicitlyCleared) return; | ||||
var cm = this.doc.cm, withOp = cm && !cm.curOp; | ||||
if (withOp) startOperation(cm); | ||||
|
r4120 | if (hasHandler(this, "clear")) { | ||
var found = this.find(); | ||||
if (found) signalLater(this, "clear", found.from, found.to); | ||||
} | ||||
r4025 | 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 (span.to != null) max = lineNo(line); | ||||
line.markedSpans = removeMarkedSpan(line.markedSpans, span); | ||||
if (span.from != null) | ||||
min = lineNo(line); | ||||
else if (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(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual); | ||||
if (len > cm.display.maxLineLength) { | ||||
cm.display.maxLine = visual; | ||||
cm.display.maxLineLength = len; | ||||
cm.display.maxLineChanged = true; | ||||
} | ||||
} | ||||
if (min != null && cm) regChange(cm, min, max + 1); | ||||
this.lines.length = 0; | ||||
this.explicitlyCleared = true; | ||||
r4042 | if (this.atomic && this.doc.cantEdit) { | |||
r4025 | this.doc.cantEdit = false; | |||
if (cm) reCheckSelection(cm); | ||||
} | ||||
if (withOp) endOperation(cm); | ||||
}; | ||||
TextMarker.prototype.find = function() { | ||||
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 || span.to != null) { | ||||
var found = lineNo(line); | ||||
if (span.from != null) from = Pos(found, span.from); | ||||
if (span.to != null) to = Pos(found, span.to); | ||||
} | ||||
} | ||||
if (this.type == "bookmark") return from; | ||||
return from && {from: from, to: to}; | ||||
}; | ||||
r4042 | TextMarker.prototype.changed = function() { | |||
var pos = this.find(), cm = this.doc.cm; | ||||
if (!pos || !cm) return; | ||||
var line = getLine(this.doc, pos.from.line); | ||||
clearCachedMeasurement(cm, line); | ||||
if (pos.from.line >= cm.display.showingFrom && pos.from.line < cm.display.showingTo) { | ||||
for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) { | ||||
if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight); | ||||
break; | ||||
} | ||||
|
r4120 | runInOp(cm, function() { | ||
cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true; | ||||
}); | ||||
r4042 | } | |||
r4025 | }; | |||
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); | ||||
} | ||||
}; | ||||
function markText(doc, from, to, options, type) { | ||||
if (options && options.shared) return markTextShared(doc, from, to, options, type); | ||||
if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type); | ||||
var marker = new TextMarker(doc, type); | ||||
if (type == "range" && !posLess(from, to)) return marker; | ||||
if (options) copyObj(options, marker); | ||||
if (marker.replacedWith) { | ||||
marker.collapsed = true; | ||||
marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget"); | ||||
r4042 | if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true; | |||
r4025 | } | |||
if (marker.collapsed) sawCollapsedSpans = true; | ||||
if (marker.addToHistory) | ||||
addToHistory(doc, {from: from, to: to, origin: "markText"}, | ||||
{head: doc.sel.head, anchor: doc.sel.anchor}, NaN); | ||||
var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd, cm = doc.cm, updateMaxLine; | ||||
doc.iter(curLine, to.line + 1, function(line) { | ||||
if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine) | ||||
updateMaxLine = true; | ||||
var span = {from: null, to: null, marker: marker}; | ||||
size += line.text.length; | ||||
if (curLine == from.line) {span.from = from.ch; size -= from.ch;} | ||||
if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;} | ||||
if (marker.collapsed) { | ||||
if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch); | ||||
if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch); | ||||
else updateLineHeight(line, 0); | ||||
} | ||||
addMarkedSpan(line, span); | ||||
++curLine; | ||||
}); | ||||
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) { | ||||
if (collapsedAtStart != collapsedAtEnd) | ||||
throw new Error("Inserting collapsed marker overlapping an existing one"); | ||||
marker.size = size; | ||||
marker.atomic = true; | ||||
} | ||||
if (cm) { | ||||
if (updateMaxLine) cm.curOp.updateMaxLine = true; | ||||
|
r4120 | if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed) | ||
r4025 | regChange(cm, from.line, to.line + 1); | |||
if (marker.atomic) reCheckSelection(cm); | ||||
} | ||||
return marker; | ||||
} | ||||
// SHARED TEXTMARKERS | ||||
function SharedTextMarker(markers, primary) { | ||||
this.markers = markers; | ||||
this.primary = primary; | ||||
for (var i = 0, me = this; i < markers.length; ++i) { | ||||
markers[i].parent = this; | ||||
on(markers[i], "clear", function(){me.clear();}); | ||||
} | ||||
} | ||||
CodeMirror.SharedTextMarker = SharedTextMarker; | ||||
|
r4120 | eventMixin(SharedTextMarker); | ||
r4025 | ||||
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() { | ||||
return this.primary.find(); | ||||
}; | ||||
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.replacedWith; | ||||
linkedDocs(doc, function(doc) { | ||||
if (widget) options.replacedWith = 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); | ||||
} | ||||
// TEXTMARKER SPANS | ||||
r2547 | ||||
r3036 | function getMarkedSpanFor(spans, marker) { | |||
r2861 | if (spans) for (var i = 0; i < spans.length; ++i) { | |||
var span = spans[i]; | ||||
r3036 | if (span.marker == marker) return span; | |||
r2861 | } | |||
} | ||||
r3036 | function removeMarkedSpan(spans, span) { | |||
r4025 | for (var r, i = 0; i < spans.length; ++i) | |||
r3036 | if (spans[i] != span) (r || (r = [])).push(spans[i]); | |||
return r; | ||||
} | ||||
r4025 | function addMarkedSpan(line, span) { | |||
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span]; | ||||
span.marker.attachLine(line); | ||||
} | ||||
function markedSpansBefore(old, startCh, isInsert) { | ||||
r2861 | 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); | ||||
r4025 | if (startsBefore || marker.type == "bookmark" && span.from == startCh && (!isInsert || !span.marker.insertLeft)) { | |||
r2861 | var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh); | |||
(nw || (nw = [])).push({from: span.from, | ||||
to: endsAfter ? null : span.to, | ||||
marker: marker}); | ||||
r2547 | } | |||
} | ||||
r2861 | return nw; | |||
} | ||||
r4025 | function markedSpansAfter(old, endCh, isInsert) { | |||
r2861 | 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); | ||||
r4025 | if (endsAfter || marker.type == "bookmark" && span.from == endCh && (!isInsert || span.marker.insertLeft)) { | |||
r2861 | var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh); | |||
(nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh, | ||||
to: span.to == null ? null : span.to - endCh, | ||||
marker: marker}); | ||||
} | ||||
} | ||||
return nw; | ||||
} | ||||
r2547 | ||||
r4025 | function stretchSpansOverChange(doc, change) { | |||
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 = posEq(change.from, change.to); | ||||
r2861 | // Get the spans that 'stick out' on both sides | |||
r4025 | var first = markedSpansBefore(oldFirst, startCh, isInsert); | |||
var last = markedSpansAfter(oldLast, endCh, isInsert); | ||||
r2861 | ||||
// Next, merge those two ends | ||||
r4025 | var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0); | |||
r2861 | 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; | ||||
r1606 | } | |||
} | ||||
} | ||||
r2861 | 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); | ||||
r1606 | } | |||
r2861 | } else { | |||
span.from += offset; | ||||
if (sameLine) (first || (first = [])).push(span); | ||||
r1606 | } | |||
} | ||||
r2861 | } | |||
r4042 | if (sameLine && first) { | |||
// Make sure we didn't create any zero-length spans | ||||
for (var i = 0; i < first.length; ++i) | ||||
if (first[i].from != null && first[i].from == first[i].to && first[i].marker.type != "bookmark") | ||||
first.splice(i--, 1); | ||||
if (!first.length) first = null; | ||||
} | ||||
r2861 | ||||
r4025 | var newMarkers = [first]; | |||
r2861 | if (!sameLine) { | |||
// Fill gap with whole-line-spans | ||||
r4025 | var gap = change.text.length - 2, gapMarkers; | |||
r2861 | if (gap > 0 && first) | |||
for (var i = 0; i < first.length; ++i) | ||||
if (first[i].to == null) | ||||
(gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker}); | ||||
for (var i = 0; i < gap; ++i) | ||||
r4025 | newMarkers.push(gapMarkers); | |||
newMarkers.push(last); | ||||
r2861 | } | |||
return newMarkers; | ||||
} | ||||
r4025 | 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; | ||||
} | ||||
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(); | ||||
for (var j = 0; j < parts.length; ++j) { | ||||
var p = parts[j]; | ||||
if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue; | ||||
var newParts = [j, 1]; | ||||
if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from)) | ||||
newParts.push({from: p.from, to: m.from}); | ||||
if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to)) | ||||
newParts.push({from: m.to, to: p.to}); | ||||
parts.splice.apply(parts, newParts); | ||||
j += newParts.length - 1; | ||||
} | ||||
} | ||||
return parts; | ||||
} | ||||
function collapsedSpanAt(line, ch) { | ||||
var sps = sawCollapsedSpans && line.markedSpans, found; | ||||
if (sps) for (var sp, i = 0; i < sps.length; ++i) { | ||||
sp = sps[i]; | ||||
if (!sp.marker.collapsed) continue; | ||||
if ((sp.from == null || sp.from < ch) && | ||||
(sp.to == null || sp.to > ch) && | ||||
(!found || found.width < sp.marker.width)) | ||||
found = sp.marker; | ||||
} | ||||
return found; | ||||
} | ||||
function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); } | ||||
function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); } | ||||
function visualLine(doc, line) { | ||||
var merged; | ||||
while (merged = collapsedSpanAtStart(line)) | ||||
line = getLine(doc, merged.find().from.line); | ||||
return line; | ||||
} | ||||
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; | ||||
r4042 | if (sp.marker.replacedWith) continue; | |||
r4025 | 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().to, endLine = getLine(doc, end.line); | ||||
return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.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]; | ||||
r4042 | if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to && | |||
r4025 | (sp.marker.inclusiveLeft || span.marker.inclusiveRight) && | |||
lineIsHiddenInner(doc, line, sp)) return true; | ||||
} | ||||
} | ||||
r2861 | ||||
function detachMarkedSpans(line) { | ||||
var spans = line.markedSpans; | ||||
if (!spans) return; | ||||
r4025 | for (var i = 0; i < spans.length; ++i) | |||
spans[i].marker.detachLine(line); | ||||
r2861 | line.markedSpans = null; | |||
} | ||||
function attachMarkedSpans(line, spans) { | ||||
if (!spans) return; | ||||
for (var i = 0; i < spans.length; ++i) | ||||
r4025 | spans[i].marker.attachLine(line); | |||
r2861 | line.markedSpans = spans; | |||
} | ||||
r4025 | // LINE WIDGETS | |||
var LineWidget = CodeMirror.LineWidget = function(cm, node, options) { | ||||
|
r4120 | if (options) for (var opt in options) if (options.hasOwnProperty(opt)) | ||
r4025 | this[opt] = options[opt]; | |||
this.cm = cm; | ||||
this.node = node; | ||||
}; | ||||
|
r4120 | eventMixin(LineWidget); | ||
r4025 | function widgetOperation(f) { | |||
return function() { | ||||
var withOp = !this.cm.curOp; | ||||
if (withOp) startOperation(this.cm); | ||||
try {var result = f.apply(this, arguments);} | ||||
finally {if (withOp) endOperation(this.cm);} | ||||
return result; | ||||
}; | ||||
} | ||||
LineWidget.prototype.clear = widgetOperation(function() { | ||||
var ws = this.line.widgets, no = lineNo(this.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) this.line.widgets = null; | ||||
|
r4120 | var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop; | ||
r4025 | updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this))); | |||
|
r4120 | if (aboveVisible) addToScrollPos(this.cm, 0, -this.height); | ||
r4025 | regChange(this.cm, no, no + 1); | |||
}); | ||||
LineWidget.prototype.changed = widgetOperation(function() { | ||||
var oldH = this.height; | ||||
this.height = null; | ||||
var diff = widgetHeight(this) - oldH; | ||||
if (!diff) return; | ||||
updateLineHeight(this.line, this.line.height + diff); | ||||
var no = lineNo(this.line); | ||||
regChange(this.cm, no, no + 1); | ||||
}); | ||||
function widgetHeight(widget) { | ||||
if (widget.height != null) return widget.height; | ||||
if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1) | ||||
removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative")); | ||||
return widget.height = widget.node.offsetHeight; | ||||
} | ||||
function addLineWidget(cm, handle, node, options) { | ||||
var widget = new LineWidget(cm, node, options); | ||||
if (widget.noHScroll) cm.display.alignWidgets = true; | ||||
changeLine(cm, handle, function(line) { | ||||
|
r4120 | 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); | ||||
r4025 | widget.line = line; | |||
if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) { | ||||
|
r4120 | var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop; | ||
r4025 | updateLineHeight(line, line.height + widgetHeight(widget)); | |||
if (aboveVisible) addToScrollPos(cm, 0, widget.height); | ||||
} | ||||
return true; | ||||
}); | ||||
return widget; | ||||
} | ||||
// LINE DATA STRUCTURE | ||||
r2861 | ||||
// Line objects. These hold state related to a line, including | ||||
// highlighting info (the styles array). | ||||
|
r4120 | var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) { | ||
this.text = text; | ||||
attachMarkedSpans(this, markedSpans); | ||||
this.height = estimateHeight ? estimateHeight(this) : 1; | ||||
}; | ||||
eventMixin(Line); | ||||
r4025 | ||||
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); | ||||
} | ||||
function cleanUpLine(line) { | ||||
line.parent = null; | ||||
detachMarkedSpans(line); | ||||
} | ||||
// Run the given mode's parser over a line, update the styles | ||||
// array, which contains alternating fragments of text and CSS | ||||
// classes. | ||||
function runMode(cm, text, mode, state, f) { | ||||
var flattenSpans = mode.flattenSpans; | ||||
if (flattenSpans == null) flattenSpans = cm.options.flattenSpans; | ||||
r4042 | var curStart = 0, curStyle = null; | |||
r4025 | var stream = new StringStream(text, cm.options.tabSize), style; | |||
if (text == "" && mode.blankLine) mode.blankLine(state); | ||||
while (!stream.eol()) { | ||||
if (stream.pos > cm.options.maxHighlightLength) { | ||||
flattenSpans = false; | ||||
// Webkit seems to refuse to render text nodes longer than 57444 characters | ||||
stream.pos = Math.min(text.length, stream.start + 50000); | ||||
style = null; | ||||
} else { | ||||
style = mode.token(stream, state); | ||||
r2861 | } | |||
r4042 | if (!flattenSpans || curStyle != style) { | |||
if (curStart < stream.start) f(stream.start, curStyle); | ||||
curStart = stream.start; curStyle = style; | ||||
} | ||||
r4025 | stream.start = stream.pos; | |||
r4042 | } | |||
if (curStart < stream.pos) f(stream.pos, curStyle); | ||||
r4025 | } | |||
function highlightLine(cm, line, state) { | ||||
// 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]; | ||||
// Compute the base array of styles | ||||
r4042 | runMode(cm, line.text, cm.doc.mode, state, function(end, style) {st.push(end, style);}); | |||
r4025 | ||||
// Run overlays, adjust style array. | ||||
for (var o = 0; o < cm.state.overlays.length; ++o) { | ||||
r4042 | var overlay = cm.state.overlays[o], i = 1, at = 0; | |||
runMode(cm, line.text, overlay.mode, true, function(end, style) { | ||||
var start = i; | ||||
r4025 | // Ensure there's a token end at the current position, and that i points at it | |||
r4042 | while (at < end) { | |||
var i_end = st[i]; | ||||
if (i_end > end) | ||||
st.splice(i, 1, end, st[i+1], i_end); | ||||
r4025 | i += 2; | |||
r4042 | at = Math.min(end, i_end); | |||
r4025 | } | |||
if (!style) return; | ||||
if (overlay.opaque) { | ||||
r4042 | st.splice(start, i - start, end, style); | |||
r4025 | i = start + 2; | |||
r2547 | } else { | |||
r4025 | for (; start < i; start += 2) { | |||
var cur = st[start+1]; | ||||
st[start+1] = cur ? cur + " " + style : style; | ||||
r2547 | } | |||
} | ||||
r4025 | }); | |||
} | ||||
return st; | ||||
} | ||||
function getLineStyles(cm, line) { | ||||
if (!line.styles || line.styles[0] != cm.state.modeGen) | ||||
line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line))); | ||||
return line.styles; | ||||
} | ||||
// Lightweight form of highlight -- proceed over this line and | ||||
// update state, but don't save a style array. | ||||
function processLine(cm, line, state) { | ||||
var mode = cm.doc.mode; | ||||
var stream = new StringStream(line.text, cm.options.tabSize); | ||||
if (line.text == "" && mode.blankLine) mode.blankLine(state); | ||||
while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) { | ||||
mode.token(stream, state); | ||||
stream.start = stream.pos; | ||||
} | ||||
} | ||||
var styleToClassCache = {}; | ||||
function styleToClass(style) { | ||||
if (!style) return null; | ||||
return styleToClassCache[style] || | ||||
(styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-")); | ||||
} | ||||
|
r4120 | function lineContent(cm, realLine, measure, copyWidgets) { | ||
r4042 | var merged, line = realLine, empty = true; | |||
while (merged = collapsedSpanAtStart(line)) | ||||
r4025 | line = getLine(cm.doc, merged.find().from.line); | |||
|
r4120 | var builder = {pre: elt("pre"), col: 0, pos: 0, | ||
measure: null, measuredSomething: false, cm: cm, | ||||
copyWidgets: copyWidgets}; | ||||
r4025 | if (line.textClass) builder.pre.className = line.textClass; | |||
do { | ||||
r4042 | if (line.text) empty = false; | |||
r4025 | builder.measure = line == realLine && measure; | |||
builder.pos = 0; | ||||
builder.addToken = builder.measure ? buildTokenMeasure : buildToken; | ||||
if ((ie || webkit) && cm.getOption("lineWrapping")) | ||||
builder.addToken = buildTokenSplitSpaces(builder.addToken); | ||||
r4042 | var next = insertLineContent(line, builder, getLineStyles(cm, line)); | |||
if (measure && line == realLine && !builder.measuredSomething) { | ||||
r4025 | measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure)); | |||
r4042 | builder.measuredSomething = true; | |||
r2547 | } | |||
r4042 | if (next) line = getLine(cm.doc, next.to.line); | |||
r4025 | } while (next); | |||
r4042 | if (measure && !builder.measuredSomething && !measure[0]) | |||
measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure)); | ||||
r4025 | if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine)) | |||
builder.pre.appendChild(document.createTextNode("\u00a0")); | ||||
var order; | ||||
// Work around problem with the reported dimensions of single-char | ||||
// direction spans on IE (issue #1129). See also the comment in | ||||
// cursorCoords. | ||||
if (measure && ie && (order = getOrder(line))) { | ||||
var l = order.length - 1; | ||||
if (order[l].from == order[l].to) --l; | ||||
var last = order[l], prev = order[l - 1]; | ||||
if (last.from + 1 == last.to && prev && last.level < prev.level) { | ||||
var span = measure[builder.pos - 1]; | ||||
if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure), | ||||
span.nextSibling); | ||||
} | ||||
} | ||||
signal(cm, "renderLine", cm, realLine, builder.pre); | ||||
return builder.pre; | ||||
} | ||||
var tokenSpecialChars = /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\uFEFF]/g; | ||||
|
r4120 | function buildToken(builder, text, style, startStyle, endStyle, title) { | ||
r4025 | if (!text) return; | |||
if (!tokenSpecialChars.test(text)) { | ||||
builder.col += text.length; | ||||
var content = document.createTextNode(text); | ||||
} else { | ||||
var content = document.createDocumentFragment(), pos = 0; | ||||
while (true) { | ||||
tokenSpecialChars.lastIndex = pos; | ||||
var m = tokenSpecialChars.exec(text); | ||||
var skipped = m ? m.index - pos : text.length - pos; | ||||
if (skipped) { | ||||
content.appendChild(document.createTextNode(text.slice(pos, pos + skipped))); | ||||
builder.col += skipped; | ||||
r1606 | } | |||
r4025 | if (!m) break; | |||
pos += skipped + 1; | ||||
if (m[0] == "\t") { | ||||
var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize; | ||||
content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab")); | ||||
builder.col += tabWidth; | ||||
} else { | ||||
var token = elt("span", "\u2022", "cm-invalidchar"); | ||||
token.title = "\\u" + m[0].charCodeAt(0).toString(16); | ||||
content.appendChild(token); | ||||
builder.col += 1; | ||||
r1305 | } | |||
} | ||||
r4025 | } | |||
if (style || startStyle || endStyle || builder.measure) { | ||||
var fullStyle = style || ""; | ||||
if (startStyle) fullStyle += startStyle; | ||||
if (endStyle) fullStyle += endStyle; | ||||
|
r4120 | var token = elt("span", [content], fullStyle); | ||
if (title) token.title = title; | ||||
return builder.pre.appendChild(token); | ||||
r4025 | } | |||
builder.pre.appendChild(content); | ||||
} | ||||
function buildTokenMeasure(builder, text, style, startStyle, endStyle) { | ||||
var wrapping = builder.cm.options.lineWrapping; | ||||
for (var i = 0; i < text.length; ++i) { | ||||
var ch = text.charAt(i), start = i == 0; | ||||
if (ch >= "\ud800" && ch < "\udbff" && i < text.length - 1) { | ||||
ch = text.slice(i, i + 2); | ||||
++i; | ||||
r4042 | } else if (i && wrapping && spanAffectsWrapping(text, i)) { | |||
r4025 | builder.pre.appendChild(elt("wbr")); | |||
} | ||||
|
r4120 | var old = builder.measure[builder.pos]; | ||
r4025 | var span = builder.measure[builder.pos] = | |||
buildToken(builder, ch, style, | ||||
start && startStyle, i == text.length - 1 && endStyle); | ||||
|
r4120 | if (old) span.leftSide = old.leftSide || old; | ||
r4025 | // In IE single-space nodes wrap differently than spaces | |||
// embedded in larger text nodes, except when set to | ||||
// white-space: normal (issue #1268). | ||||
if (ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) && | ||||
i < text.length - 1 && !/\s/.test(text.charAt(i + 1))) | ||||
span.style.whiteSpace = "normal"; | ||||
builder.pos += ch.length; | ||||
} | ||||
r4042 | if (text.length) builder.measuredSomething = true; | |||
r4025 | } | |||
function buildTokenSplitSpaces(inner) { | ||||
function split(old) { | ||||
var out = " "; | ||||
for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0"; | ||||
out += " "; | ||||
return out; | ||||
} | ||||
|
r4120 | return function(builder, text, style, startStyle, endStyle, title) { | ||
return inner(builder, text.replace(/ {3,}/, split), style, startStyle, endStyle, title); | ||||
r4025 | }; | |||
} | ||||
|
r4120 | function buildCollapsedSpan(builder, size, marker, ignoreWidget) { | ||
var widget = !ignoreWidget && marker.replacedWith; | ||||
r4025 | if (widget) { | |||
|
r4120 | if (builder.copyWidgets) widget = widget.cloneNode(true); | ||
builder.pre.appendChild(widget); | ||||
r4042 | if (builder.measure) { | |||
|
r4120 | if (size) { | ||
builder.measure[builder.pos] = widget; | ||||
} else { | ||||
var elt = builder.measure[builder.pos] = zeroWidthElement(builder.cm.display.measure); | ||||
if (marker.type != "bookmark" || marker.insertLeft) | ||||
builder.pre.insertBefore(elt, widget); | ||||
else | ||||
builder.pre.appendChild(elt); | ||||
} | ||||
r4042 | builder.measuredSomething = true; | |||
} | ||||
r4025 | } | |||
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) { | ||||
r4042 | var spans = line.markedSpans, allText = line.text, at = 0; | |||
r4025 | if (!spans) { | |||
for (var i = 1; i < styles.length; i+=2) | ||||
r4042 | builder.addToken(builder, allText.slice(at, at = styles[i]), styleToClass(styles[i+1])); | |||
r4025 | return; | |||
} | ||||
r4042 | var len = allText.length, pos = 0, i = 1, text = "", style; | |||
|
r4120 | var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed; | ||
r4025 | for (;;) { | |||
if (nextChange == pos) { // Update current marker set | ||||
|
r4120 | spanStyle = spanEndStyle = spanStartStyle = title = ""; | ||
r4025 | collapsed = null; nextChange = Infinity; | |||
var foundBookmark = null; | ||||
for (var j = 0; j < spans.length; ++j) { | ||||
var sp = spans[j], m = sp.marker; | ||||
if (sp.from <= pos && (sp.to == null || sp.to > pos)) { | ||||
if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; } | ||||
if (m.className) spanStyle += " " + m.className; | ||||
if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle; | ||||
if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle; | ||||
|
r4120 | if (m.title && !title) title = m.title; | ||
r4042 | if (m.collapsed && (!collapsed || collapsed.marker.size < m.size)) | |||
r4025 | collapsed = sp; | |||
} else if (sp.from > pos && nextChange > sp.from) { | ||||
nextChange = sp.from; | ||||
} | ||||
|
r4120 | if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmark = m; | ||
r4025 | } | |||
if (collapsed && (collapsed.from || 0) == pos) { | ||||
buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos, | ||||
|
r4120 | collapsed.marker, collapsed.from == null); | ||
r4025 | if (collapsed.to == null) return collapsed.marker.find(); | |||
} | ||||
if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark); | ||||
} | ||||
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, | ||||
|
r4120 | spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title); | ||
r4025 | } | |||
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;} | ||||
pos = end; | ||||
spanStartStyle = ""; | ||||
} | ||||
r4042 | text = allText.slice(at, at = styles[i++]); | |||
style = styleToClass(styles[i++]); | ||||
r4025 | } | |||
} | ||||
} | ||||
// DOCUMENT DATA STRUCTURE | ||||
function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) { | ||||
function spansFor(n) {return markedSpans ? markedSpans[n] : null;} | ||||
function update(line, text, spans) { | ||||
updateLine(line, text, spans, estimateHeight); | ||||
signalLater(line, "change", line, change); | ||||
} | ||||
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; | ||||
// First adjust the line structure | ||||
if (from.ch == 0 && to.ch == 0 && lastText == "") { | ||||
// This is a whole-line replace. Treated specially to make | ||||
// sure line objects move the way they are supposed to. | ||||
for (var i = 0, e = text.length - 1, added = []; i < e; ++i) | ||||
|
r4120 | added.push(new Line(text[i], spansFor(i), estimateHeight)); | ||
r4025 | 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 { | ||||
for (var added = [], i = 1, e = text.length - 1; i < e; ++i) | ||||
|
r4120 | added.push(new Line(text[i], spansFor(i), estimateHeight)); | ||
added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight)); | ||||
r4025 | 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); | ||||
for (var i = 1, e = text.length - 1, added = []; i < e; ++i) | ||||
|
r4120 | added.push(new Line(text[i], spansFor(i), estimateHeight)); | ||
r4025 | if (nlines > 1) doc.remove(from.line + 1, nlines - 1); | |||
doc.insert(from.line + 1, added); | ||||
} | ||||
signalLater(doc, "change", doc, change); | ||||
setSelection(doc, selAfter.anchor, selAfter.head, null, true); | ||||
} | ||||
r2547 | function LeafChunk(lines) { | |||
this.lines = lines; | ||||
this.parent = null; | ||||
for (var i = 0, e = lines.length, height = 0; i < e; ++i) { | ||||
lines[i].parent = this; | ||||
height += lines[i].height; | ||||
} | ||||
this.height = height; | ||||
} | ||||
r4025 | ||||
r2547 | LeafChunk.prototype = { | |||
chunkSize: function() { return this.lines.length; }, | ||||
r4025 | removeInner: function(at, n) { | |||
r2547 | for (var i = at, e = at + n; i < e; ++i) { | |||
var line = this.lines[i]; | ||||
this.height -= line.height; | ||||
r4025 | cleanUpLine(line); | |||
signalLater(line, "delete"); | ||||
r2547 | } | |||
this.lines.splice(at, n); | ||||
}, | ||||
collapse: function(lines) { | ||||
lines.splice.apply(lines, [lines.length, 0].concat(this.lines)); | ||||
}, | ||||
r4025 | insertInner: function(at, lines, height) { | |||
r2547 | this.height += height; | |||
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at)); | ||||
for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this; | ||||
}, | ||||
iterN: function(at, n, op) { | ||||
for (var e = at + n; at < e; ++at) | ||||
if (op(this.lines[at])) return true; | ||||
} | ||||
}; | ||||
r4025 | ||||
r2547 | function BranchChunk(children) { | |||
this.children = children; | ||||
var size = 0, height = 0; | ||||
for (var i = 0, e = children.length; i < e; ++i) { | ||||
var ch = children[i]; | ||||
size += ch.chunkSize(); height += ch.height; | ||||
ch.parent = this; | ||||
} | ||||
this.size = size; | ||||
this.height = height; | ||||
this.parent = null; | ||||
} | ||||
r4025 | ||||
r2547 | BranchChunk.prototype = { | |||
chunkSize: function() { return this.size; }, | ||||
r4025 | removeInner: function(at, n) { | |||
r2547 | 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; | ||||
r4025 | child.removeInner(at, rm); | |||
r2547 | 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 (this.size - n < 25) { | ||||
var lines = []; | ||||
this.collapse(lines); | ||||
this.children = [new LeafChunk(lines)]; | ||||
this.children[0].parent = this; | ||||
} | ||||
}, | ||||
collapse: function(lines) { | ||||
for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines); | ||||
}, | ||||
r4025 | insertInner: function(at, lines, height) { | |||
r2547 | this.size += lines.length; | |||
this.height += height; | ||||
for (var i = 0, e = this.children.length; i < e; ++i) { | ||||
var child = this.children[i], sz = child.chunkSize(); | ||||
if (at <= sz) { | ||||
r4025 | child.insertInner(at, lines, height); | |||
r2547 | 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; | ||||
} | ||||
}, | ||||
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, e = this.children.length; i < e; ++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; | ||||
} | ||||
} | ||||
}; | ||||
r4025 | 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; | ||||
|
r4120 | BranchChunk.call(this, [new LeafChunk([new Line("", null)])]); | ||
r4025 | this.first = firstLine; | |||
this.scrollTop = this.scrollLeft = 0; | ||||
this.cantEdit = false; | ||||
this.history = makeHistory(); | ||||
r4042 | this.cleanGeneration = 1; | |||
r4025 | this.frontier = firstLine; | |||
var start = Pos(firstLine, 0); | ||||
this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null}; | ||||
this.id = ++nextDocId; | ||||
this.modeOption = mode; | ||||
if (typeof text == "string") text = splitLines(text); | ||||
updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start}); | ||||
}; | ||||
Doc.prototype = createObj(BranchChunk.prototype, { | ||||
r4042 | constructor: Doc, | |||
r4025 | 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); | ||||
}, | ||||
insert: function(at, lines) { | ||||
var height = 0; | ||||
for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height; | ||||
this.insertInner(at - this.first, lines, height); | ||||
}, | ||||
remove: function(at, n) { this.removeInner(at - this.first, n); }, | ||||
getValue: function(lineSep) { | ||||
var lines = getLines(this, this.first, this.first + this.size); | ||||
if (lineSep === false) return lines; | ||||
return lines.join(lineSep || "\n"); | ||||
}, | ||||
setValue: 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"}, | ||||
{head: top, anchor: top}, true); | ||||
}, | ||||
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;}, | ||||
setLine: function(line, text) { | ||||
if (isLine(this, line)) | ||||
replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line))); | ||||
}, | ||||
removeLine: function(line) { | ||||
if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line))); | ||||
else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0))); | ||||
}, | ||||
getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);}, | ||||
getLineNumber: function(line) {return lineNo(line);}, | ||||
|
r4120 | getLineHandleVisualStart: function(line) { | ||
if (typeof line == "number") line = getLine(this, line); | ||||
return visualLine(this, line); | ||||
}, | ||||
r4025 | 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 sel = this.sel, pos; | ||||
if (start == null || start == "head") pos = sel.head; | ||||
else if (start == "anchor") pos = sel.anchor; | ||||
else if (start == "end" || start === false) pos = sel.to; | ||||
else pos = sel.from; | ||||
return copyPos(pos); | ||||
}, | ||||
somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);}, | ||||
setCursor: docOperation(function(line, ch, extend) { | ||||
var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line); | ||||
if (extend) extendSelection(this, pos); | ||||
else setSelection(this, pos, pos); | ||||
}), | ||||
setSelection: docOperation(function(anchor, head) { | ||||
setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor)); | ||||
}), | ||||
extendSelection: docOperation(function(from, to) { | ||||
extendSelection(this, clipPos(this, from), to && clipPos(this, to)); | ||||
}), | ||||
getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);}, | ||||
replaceSelection: function(code, collapse, origin) { | ||||
makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around"); | ||||
}, | ||||
undo: docOperation(function() {makeChangeFromHistory(this, "undo");}), | ||||
redo: docOperation(function() {makeChangeFromHistory(this, "redo");}), | ||||
setExtending: function(val) {this.sel.extend = val;}, | ||||
historySize: function() { | ||||
var hist = this.history; | ||||
return {undo: hist.done.length, redo: hist.undone.length}; | ||||
}, | ||||
r4042 | clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);}, | |||
r4025 | ||||
markClean: function() { | ||||
r4042 | this.cleanGeneration = this.changeGeneration(); | |||
}, | ||||
changeGeneration: function() { | ||||
r4025 | this.history.lastOp = this.history.lastOrigin = null; | |||
r4042 | return this.history.generation; | |||
r4025 | }, | |||
r4042 | isClean: function (gen) { | |||
return this.history.generation == (gen || this.cleanGeneration); | ||||
}, | ||||
r4025 | ||||
getHistory: function() { | ||||
return {done: copyHistoryArray(this.history.done), | ||||
undone: copyHistoryArray(this.history.undone)}; | ||||
}, | ||||
setHistory: function(histData) { | ||||
r4042 | var hist = this.history = makeHistory(this.history.maxGeneration); | |||
r4025 | hist.done = histData.done.slice(0); | |||
hist.undone = histData.undone.slice(0); | ||||
}, | ||||
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}; | ||||
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; | ||||
}, | ||||
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 = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor, | ||||
shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn}; | ||||
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}]; | ||||
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); | ||||
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 = makeHistory(); | ||||
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;} | ||||
}); | ||||
Doc.prototype.eachLine = Doc.prototype.iter; | ||||
// The Doc methods that should be available on CodeMirror instances | ||||
var dontDelegate = "iter insert remove copy getEditor".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]); | ||||
|
r4120 | eventMixin(Doc); | ||
r4025 | 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); | ||||
} | ||||
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) computeMaxLength(cm); | ||||
cm.options.mode = doc.modeOption; | ||||
regChange(cm); | ||||
} | ||||
// LINE UTILITIES | ||||
function getLine(chunk, n) { | ||||
n -= chunk.first; | ||||
r2547 | while (!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]; | ||||
} | ||||
r4025 | ||||
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; | ||||
} | ||||
function getLines(doc, from, to) { | ||||
var out = []; | ||||
doc.iter(from, to, function(line) { out.push(line.text); }); | ||||
return out; | ||||
} | ||||
function updateLineHeight(line, height) { | ||||
var diff = height - line.height; | ||||
for (var n = line; n; n = n.parent) n.height += diff; | ||||
} | ||||
r2547 | 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) { | ||||
r4025 | for (var i = 0;; ++i) { | |||
r2547 | if (chunk.children[i] == cur) break; | |||
no += chunk.children[i].chunkSize(); | ||||
} | ||||
} | ||||
r4025 | return no + cur.first; | |||
} | ||||
r2547 | function lineAtHeight(chunk, h) { | |||
r4025 | var n = chunk.first; | |||
r2547 | outer: do { | |||
for (var i = 0, e = chunk.children.length; i < e; ++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, e = chunk.lines.length; i < e; ++i) { | ||||
var line = chunk.lines[i], lh = line.height; | ||||
if (h < lh) break; | ||||
h -= lh; | ||||
} | ||||
return n + i; | ||||
} | ||||
r4025 | ||||
function heightAtLine(cm, lineObj) { | ||||
lineObj = visualLine(cm.doc, 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; | ||||
r2547 | } | |||
r4025 | } | |||
r2547 | return h; | |||
} | ||||
r4025 | function getOrder(line) { | |||
var order = line.order; | ||||
if (order == null) order = line.order = bidiOrdering(line.text); | ||||
return order; | ||||
} | ||||
// HISTORY | ||||
r4042 | function makeHistory(startGen) { | |||
r4025 | return { | |||
// Arrays of history events. Doing something adds an event to | ||||
// done and clears undo. Undoing moves events from done to | ||||
// undone, redoing moves them in the other direction. | ||||
done: [], undone: [], undoDepth: Infinity, | ||||
// Used to track when changes can be merged into a single undo | ||||
// event | ||||
lastTime: 0, lastOp: null, lastOrigin: null, | ||||
// Used by the isClean() method | ||||
r4042 | generation: startGen || 1, maxGeneration: startGen || 1 | |||
r4025 | }; | |||
} | ||||
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; | ||||
}); | ||||
} | ||||
function historyChangeFromChange(doc, change) { | ||||
|
r4120 | var from = { line: change.from.line, ch: change.from.ch }; | ||
var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)}; | ||||
r4025 | 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; | ||||
} | ||||
function addToHistory(doc, change, selAfter, opId) { | ||||
var hist = doc.history; | ||||
hist.undone.length = 0; | ||||
var time = +new Date, cur = lst(hist.done); | ||||
if (cur && | ||||
(hist.lastOp == opId || | ||||
hist.lastOrigin == change.origin && change.origin && | ||||
((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) || | ||||
change.origin.charAt(0) == "*"))) { | ||||
// Merge this change into the last event | ||||
var last = lst(cur.changes); | ||||
if (posEq(change.from, change.to) && posEq(change.from, last.to)) { | ||||
// Optimized case for simple insertion -- don't want to add | ||||
// new changesets for every character typed | ||||
last.to = changeEnd(change); | ||||
r2547 | } else { | |||
r4025 | // Add new sub-event | |||
cur.changes.push(historyChangeFromChange(doc, change)); | ||||
} | ||||
cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head; | ||||
} else { | ||||
// Can not be merged, start a new event. | ||||
cur = {changes: [historyChangeFromChange(doc, change)], | ||||
r4042 | generation: hist.generation, | |||
r4025 | anchorBefore: doc.sel.anchor, headBefore: doc.sel.head, | |||
anchorAfter: selAfter.anchor, headAfter: selAfter.head}; | ||||
hist.done.push(cur); | ||||
r4042 | hist.generation = ++hist.maxGeneration; | |||
r4025 | while (hist.done.length > hist.undoDepth) | |||
hist.done.shift(); | ||||
} | ||||
hist.lastTime = time; | ||||
hist.lastOp = opId; | ||||
hist.lastOrigin = change.origin; | ||||
} | ||||
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; | ||||
} | ||||
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) { | ||||
for (var i = 0, copy = []; i < events.length; ++i) { | ||||
var event = events[i], changes = event.changes, newChanges = []; | ||||
copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore, | ||||
anchorAfter: event.anchorAfter, headAfter: event.headAfter}); | ||||
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]; | ||||
} | ||||
} | ||||
r1305 | } | |||
r4025 | } | |||
return copy; | ||||
} | ||||
// Rebasing/resetting history to deal with externally-sourced changes | ||||
function rebaseHistSel(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; | ||||
for (var j = 0; j < sub.changes.length; ++j) { | ||||
var cur = sub.changes[j]; | ||||
if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); } | ||||
if (to < cur.from.line) { | ||||
cur.from.line += diff; | ||||
cur.to.line += diff; | ||||
} else if (from <= cur.to.line) { | ||||
ok = false; | ||||
break; | ||||
} | ||||
} | ||||
if (!sub.copied) { | ||||
sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore); | ||||
sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter); | ||||
sub.copied = true; | ||||
} | ||||
if (!ok) { | ||||
array.splice(0, i + 1); | ||||
i = 0; | ||||
} else { | ||||
rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore); | ||||
rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter); | ||||
} | ||||
} | ||||
} | ||||
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 OPERATORS | ||||
r1305 | ||||
r1606 | function stopMethod() {e_stop(this);} | |||
r1305 | // Ensure an event has a stop method. | |||
function addStop(event) { | ||||
r1606 | if (!event.stop) event.stop = stopMethod; | |||
r1305 | return event; | |||
} | ||||
r1606 | function e_preventDefault(e) { | |||
if (e.preventDefault) e.preventDefault(); | ||||
else e.returnValue = false; | ||||
} | ||||
function e_stopPropagation(e) { | ||||
if (e.stopPropagation) e.stopPropagation(); | ||||
else e.cancelBubble = true; | ||||
} | ||||
r4042 | function e_defaultPrevented(e) { | |||
return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false; | ||||
} | ||||
r1606 | function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);} | |||
r2547 | CodeMirror.e_stop = e_stop; | |||
CodeMirror.e_preventDefault = e_preventDefault; | ||||
CodeMirror.e_stopPropagation = e_stopPropagation; | ||||
r1606 | function e_target(e) {return e.target || e.srcElement;} | |||
function e_button(e) { | ||||
r2861 | 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; | ||||
r1606 | } | |||
r1305 | ||||
r4025 | // EVENT HANDLING | |||
function on(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); | ||||
} | ||||
} | ||||
function off(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; } | ||||
} | ||||
} | ||||
function signal(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 delayedCallbacks, delayedCallbackDepth = 0; | ||||
function signalLater(emitter, type /*, values...*/) { | ||||
var arr = emitter._handlers && emitter._handlers[type]; | ||||
if (!arr) return; | ||||
var args = Array.prototype.slice.call(arguments, 2); | ||||
if (!delayedCallbacks) { | ||||
++delayedCallbackDepth; | ||||
delayedCallbacks = []; | ||||
setTimeout(fireDelayed, 0); | ||||
} | ||||
function bnd(f) {return function(){f.apply(null, args);};}; | ||||
for (var i = 0; i < arr.length; ++i) | ||||
delayedCallbacks.push(bnd(arr[i])); | ||||
} | ||||
|
r4120 | function signalDOMEvent(cm, e, override) { | ||
signal(cm, override || e.type, cm, e); | ||||
return e_defaultPrevented(e) || e.codemirrorIgnore; | ||||
r4042 | } | |||
r4025 | function fireDelayed() { | |||
--delayedCallbackDepth; | ||||
var delayed = delayedCallbacks; | ||||
delayedCallbacks = null; | ||||
for (var i = 0; i < delayed.length; ++i) delayed[i](); | ||||
} | ||||
function hasHandler(emitter, type) { | ||||
var arr = emitter._handlers && emitter._handlers[type]; | ||||
return arr && arr.length > 0; | ||||
} | ||||
CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal; | ||||
|
r4120 | function eventMixin(ctor) { | ||
ctor.prototype.on = function(type, f) {on(this, type, f);}; | ||||
ctor.prototype.off = function(type, f) {off(this, type, f);}; | ||||
} | ||||
r4025 | // MISC UTILITIES | |||
// Number of pixels added to scroller and sizer to hide scrollbar | ||||
var scrollerCutOff = 30; | ||||
// Returned or thrown by various protocols to signal 'I'm not | ||||
// handling this'. | ||||
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}}; | ||||
r1305 | ||||
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. | ||||
r4025 | function countColumn(string, end, tabSize, startIndex, startValue) { | |||
r1305 | if (end == null) { | |||
end = string.search(/[^\s\u00a0]/); | ||||
if (end == -1) end = string.length; | ||||
} | ||||
r4025 | for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) { | |||
r1305 | if (string.charAt(i) == "\t") n += tabSize - (n % tabSize); | |||
else ++n; | ||||
} | ||||
return n; | ||||
} | ||||
r4025 | CodeMirror.countColumn = countColumn; | |||
r2861 | ||||
var spaceStrs = [""]; | ||||
function spaceStr(n) { | ||||
while (spaceStrs.length <= n) | ||||
spaceStrs.push(lst(spaceStrs) + " "); | ||||
return spaceStrs[n]; | ||||
} | ||||
function lst(arr) { return arr[arr.length-1]; } | ||||
r2547 | function selectInput(node) { | |||
if (ios) { // Mobile Safari apparently has a bug where select() is broken. | ||||
node.selectionStart = 0; | ||||
node.selectionEnd = node.value.length; | ||||
r4042 | } else { | |||
// Suppress mysterious IE10 errors | ||||
try { node.select(); } | ||||
catch(_e) {} | ||||
} | ||||
r2547 | } | |||
r1305 | ||||
r4025 | function indexOf(collection, elt) { | |||
if (collection.indexOf) return collection.indexOf(elt); | ||||
for (var i = 0, e = collection.length; i < e; ++i) | ||||
if (collection[i] == elt) return i; | ||||
return -1; | ||||
} | ||||
function createObj(base, props) { | ||||
function Obj() {} | ||||
Obj.prototype = base; | ||||
var inst = new Obj(); | ||||
if (props) copyObj(props, inst); | ||||
return inst; | ||||
} | ||||
function copyObj(obj, target) { | ||||
if (!target) target = {}; | ||||
for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop]; | ||||
return target; | ||||
} | ||||
function emptyArray(size) { | ||||
for (var a = [], i = 0; i < size; ++i) a.push(undefined); | ||||
return a; | ||||
} | ||||
function bind(f) { | ||||
var args = Array.prototype.slice.call(arguments, 1); | ||||
return function(){return f.apply(null, args);}; | ||||
} | ||||
r4042 | var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/; | |||
r4025 | function isWordChar(ch) { | |||
return /\w/.test(ch) || ch > "\x80" && | ||||
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch)); | ||||
} | ||||
function isEmpty(obj) { | ||||
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false; | ||||
return true; | ||||
} | ||||
var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F\udc00-\udfff]/; | ||||
// DOM UTILITIES | ||||
r1305 | ||||
r2861 | 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") setTextContent(e, content); | ||||
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]); | ||||
return e; | ||||
r2547 | } | |||
r4025 | ||||
r2861 | function removeChildren(e) { | |||
r4025 | for (var count = e.childNodes.length; count > 0; --count) | |||
e.removeChild(e.firstChild); | ||||
r2861 | return e; | |||
} | ||||
r4025 | ||||
r2861 | function removeChildrenAndAdd(parent, e) { | |||
r4025 | return removeChildren(parent).appendChild(e); | |||
} | ||||
r2861 | function setTextContent(e, str) { | |||
if (ie_lt9) { | ||||
e.innerHTML = ""; | ||||
e.appendChild(document.createTextNode(str)); | ||||
} else e.textContent = str; | ||||
} | ||||
r1305 | ||||
r4025 | function getRect(node) { | |||
return node.getBoundingClientRect(); | ||||
} | ||||
CodeMirror.replaceGetRect = function(f) { getRect = f; }; | ||||
// 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_lt9) return false; | ||||
var div = elt('div'); | ||||
return "draggable" in div || "dragDrop" in div; | ||||
}(); | ||||
// For a reason I have yet to figure out, some browsers disallow | ||||
// word wrapping between certain characters *only* if a new inline | ||||
// element is started between them. This makes it hard to reliably | ||||
// measure the position of things, since that requires inserting an | ||||
r4042 | // extra span. This terribly fragile set of tests matches the | |||
r4025 | // character combinations that suffer from this phenomenon on the | |||
// various browsers. | ||||
r4042 | function spanAffectsWrapping() { return false; } | |||
if (gecko) // Only for "$'" | ||||
spanAffectsWrapping = function(str, i) { | ||||
return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39; | ||||
}; | ||||
else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent)) | ||||
spanAffectsWrapping = function(str, i) { | ||||
return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1)); | ||||
}; | ||||
|
r4120 | else if (webkit && !/Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent)) | ||
r4042 | spanAffectsWrapping = function(str, i) { | |||
|
r4120 | if (i > 1 && str.charCodeAt(i - 1) == 45) { | ||
if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true; | ||||
if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false; | ||||
} | ||||
r4042 | return /[~!#%&*)=+}\]|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|…[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1)); | |||
}; | ||||
r4025 | ||||
var knownScrollbarWidth; | ||||
function scrollbarWidth(measure) { | ||||
if (knownScrollbarWidth != null) return knownScrollbarWidth; | ||||
var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll"); | ||||
removeChildrenAndAdd(measure, test); | ||||
if (test.offsetWidth) | ||||
knownScrollbarWidth = test.offsetHeight - test.clientHeight; | ||||
return knownScrollbarWidth || 0; | ||||
} | ||||
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_lt8; | ||||
} | ||||
if (zwspSupported) return elt("span", "\u200b"); | ||||
else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px"); | ||||
r2547 | } | |||
r1305 | ||||
// See if "".split is the broken IE version, if so, provide an | ||||
// alternative way to split lines. | ||||
r2547 | var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) { | |||
r2861 | 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; | ||||
} | ||||
r2547 | } | |||
return result; | ||||
r2861 | } : function(string){return string.split(/\r\n?|\n/);}; | |||
r1606 | CodeMirror.splitLines = splitLines; | |||
r1305 | ||||
r2547 | 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; | ||||
}; | ||||
r1305 | ||||
r4025 | var hasCopyEvent = (function() { | |||
var e = elt("div"); | ||||
if ("oncopy" in e) return true; | ||||
e.setAttribute("oncopy", "return;"); | ||||
return typeof e.oncopy == 'function'; | ||||
})(); | ||||
// KEY NAMING | ||||
r1305 | ||||
r2547 | 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: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete", | ||||
186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", | ||||
221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home", | ||||
63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"}; | ||||
CodeMirror.keyNames = keyNames; | ||||
(function() { | ||||
// Number keys | ||||
for (var i = 0; i < 10; i++) keyNames[i + 48] = 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; | ||||
})(); | ||||
r4025 | // BIDI HELPERS | |||
function iterateBidiSections(order, from, to, f) { | ||||
if (!order) return f(from, to, "ltr"); | ||||
|
r4120 | var found = false; | ||
r4025 | for (var i = 0; i < order.length; ++i) { | |||
var part = order[i]; | ||||
|
r4120 | if (part.from < to && part.to > from || from == to && part.to == from) { | ||
r4025 | f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr"); | |||
|
r4120 | found = true; | ||
} | ||||
} | ||||
if (!found) f(from, to, "ltr"); | ||||
r4025 | } | |||
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(cm.doc, 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; | ||||
while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN))) | ||||
lineN = merged.find().to.line; | ||||
var order = getOrder(line); | ||||
var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line); | ||||
return Pos(lineN, ch); | ||||
} | ||||
r4042 | 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) { | ||||
for (var i = 0, found; i < order.length; ++i) { | ||||
var cur = order[i]; | ||||
if (cur.from < pos && cur.to > pos) { bidiOther = null; return i; } | ||||
if (cur.from == pos || cur.to == pos) { | ||||
if (found == null) { | ||||
found = i; | ||||
} else if (compareBidiLevel(order, cur.level, order[found].level)) { | ||||
bidiOther = found; | ||||
return i; | ||||
} else { | ||||
bidiOther = i; | ||||
return found; | ||||
} | ||||
} | ||||
} | ||||
bidiOther = null; | ||||
return found; | ||||
} | ||||
function moveInLine(line, pos, dir, byUnit) { | ||||
if (!byUnit) return pos + dir; | ||||
do pos += dir; | ||||
while (pos > 0 && isExtendingChar.test(line.text.charAt(pos))); | ||||
return pos; | ||||
} | ||||
r4025 | // This is somewhat involved. It 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); | ||||
r4042 | 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; | ||||
r4025 | } else { | |||
r4042 | 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); | ||||
r4025 | } | |||
} | ||||
} | ||||
function moveLogically(line, start, dir, byUnit) { | ||||
var target = start + dir; | ||||
if (byUnit) while (target > 0 && isExtendingChar.test(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%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL"; | ||||
// Character types for codepoints 0x600 to 0x6ff | ||||
var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr"; | ||||
function charType(code) { | ||||
if (code <= 0xff) return lowTypes.charAt(code); | ||||
else if (0x590 <= code && code <= 0x5f4) return "R"; | ||||
else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600); | ||||
else if (0x700 <= code && code <= 0x8ac) return "r"; | ||||
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"; | ||||
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 - 1 && 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 - 1 ? 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({from: start, to: i, level: 0}); | ||||
} 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, {from: pos, to: j, level: 1}); | ||||
var nstart = j; | ||||
for (++j; j < i && countsAsNum.test(types[j]); ++j) {} | ||||
order.splice(at, 0, {from: nstart, to: j, level: 2}); | ||||
pos = j; | ||||
} else ++j; | ||||
} | ||||
if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1}); | ||||
} | ||||
} | ||||
if (order[0].level == 1 && (m = str.match(/^\s+/))) { | ||||
order[0].from = m[0].length; | ||||
order.unshift({from: 0, to: m[0].length, level: 0}); | ||||
} | ||||
if (lst(order).level == 1 && (m = str.match(/\s+$/))) { | ||||
lst(order).to -= m[0].length; | ||||
order.push({from: len - m[0].length, to: len, level: 0}); | ||||
} | ||||
if (order[0].level != lst(order).level) | ||||
order.push({from: len, to: len, level: order[0].level}); | ||||
return order; | ||||
}; | ||||
})(); | ||||
// THE END | ||||
|
r4120 | CodeMirror.version = "3.15.0"; | ||
r2861 | ||||
r1305 | return CodeMirror; | |||
})(); | ||||