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// All functions that need access to the editor's state live inside
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// the CodeMirror function. Below that, at the bottom of the file,
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// some utilities are defined.
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// CodeMirror is the only global var we claim
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var CodeMirror = (function() {
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// This is the function that produces an editor instance. It's
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// closure is used to store the editor state.
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function CodeMirror(place, givenOptions) {
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// Determine effective options based on given values and defaults.
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var options = {}, defaults = CodeMirror.defaults;
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for (var opt in defaults)
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if (defaults.hasOwnProperty(opt))
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options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
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// The element in which the editor lives. Takes care of scrolling
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// (if enabled).
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var wrapper = document.createElement("div");
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wrapper.className = "CodeMirror";
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// This mess creates the base DOM structure for the editor.
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wrapper.innerHTML =
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'<div style="position: relative">' + // Set to the height of the text, causes scrolling
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'<pre style="position: relative; height: 0; visibility: hidden; overflow: hidden;">' + // To measure line/char size
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'<span>xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx</span></pre>' +
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'<div style="position: relative">' + // Moved around its parent to cover visible view
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'<div class="CodeMirror-gutter"><div class="CodeMirror-gutter-text"></div></div>' +
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'<div style="overflow: hidden; position: absolute; width: 0; left: 0">' + // Wraps and hides input textarea
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'<textarea style="height: 1px; position: absolute; width: 1px;" wrap="off"></textarea></div>' +
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// Provides positioning relative to (visible) text origin
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'<div class="CodeMirror-lines"><div style="position: relative">' +
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'<pre class="CodeMirror-cursor"> </pre>' + // Absolutely positioned blinky cursor
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'<div></div></div></div></div></div>'; // This DIV contains the actual code
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if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
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// I've never seen more elegant code in my life.
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var code = wrapper.firstChild, measure = code.firstChild, mover = measure.nextSibling,
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gutter = mover.firstChild, gutterText = gutter.firstChild,
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inputDiv = gutter.nextSibling, input = inputDiv.firstChild,
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lineSpace = inputDiv.nextSibling.firstChild, cursor = lineSpace.firstChild, lineDiv = cursor.nextSibling;
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if (options.tabindex != null) input.tabindex = options.tabindex;
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if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";
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// Delayed object wrap timeouts, making sure only one is active. blinker holds an interval.
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var poll = new Delayed(), highlight = new Delayed(), blinker;
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// mode holds a mode API object. lines an array of Line objects
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// (see Line constructor), work an array of lines that should be
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// parsed, and history the undo history (instance of History
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// constructor).
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var mode, lines = [new Line("")], work, history = new History(), focused;
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loadMode();
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// The selection. These are always maintained to point at valid
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// positions. Inverted is used to remember that the user is
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// selecting bottom-to-top.
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var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false};
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// Selection-related flags. shiftSelecting obviously tracks
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// whether the user is holding shift. reducedSelection is a hack
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// to get around the fact that we can't create inverted
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// selections. See below.
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var shiftSelecting, reducedSelection;
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// Variables used by startOperation/endOperation to track what
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// happened during the operation.
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var updateInput, changes, textChanged, selectionChanged, leaveInputAlone;
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// Current visible range (may be bigger than the view window).
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var showingFrom = 0, showingTo = 0, lastHeight = 0, curKeyId = null;
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// editing will hold an object describing the things we put in the
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// textarea, to help figure out whether something changed.
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// bracketHighlighted is used to remember that a backet has been
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// marked.
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var editing, bracketHighlighted;
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// Initialize the content. Somewhat hacky (delayed prepareInput)
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// to work around browser issues.
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operation(function(){setValue(options.value || ""); updateInput = false;})();
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setTimeout(prepareInput, 20);
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// Register our event handlers.
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connect(wrapper, "mousedown", operation(onMouseDown));
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// Gecko browsers fire contextmenu *after* opening the menu, at
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// which point we can't mess with it anymore. Context menu is
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// handled in onMouseDown for Gecko.
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if (!gecko) connect(wrapper, "contextmenu", operation(onContextMenu));
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connect(code, "dblclick", operation(onDblClick));
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connect(wrapper, "scroll", function() {updateDisplay([]); if (options.onScroll) options.onScroll(instance);});
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connect(window, "resize", function() {updateDisplay(true);});
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connect(input, "keyup", operation(onKeyUp));
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connect(input, "keydown", operation(onKeyDown));
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connect(input, "keypress", operation(onKeyPress));
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connect(input, "focus", onFocus);
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connect(input, "blur", onBlur);
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connect(wrapper, "dragenter", function(e){e.stop();});
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connect(wrapper, "dragover", function(e){e.stop();});
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connect(wrapper, "drop", operation(onDrop));
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connect(wrapper, "paste", function(){input.focus(); fastPoll();});
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connect(input, "paste", function(){fastPoll();});
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connect(input, "cut", function(){fastPoll();});
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if (document.activeElement == input) onFocus();
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else onBlur();
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function isLine(l) {return l >= 0 && l < lines.length;}
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// The instance object that we'll return. Mostly calls out to
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// local functions in the CodeMirror function. Some do some extra
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// range checking and/or clipping. operation is used to wrap the
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// call so that changes it makes are tracked, and the display is
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// updated afterwards.
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var instance = {
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getValue: getValue,
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setValue: operation(setValue),
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getSelection: getSelection,
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replaceSelection: operation(replaceSelection),
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focus: function(){input.focus(); onFocus(); fastPoll();},
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setOption: function(option, value) {
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options[option] = value;
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if (option == "lineNumbers" || option == "gutter") gutterChanged();
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else if (option == "mode" || option == "indentUnit") loadMode();
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},
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getOption: function(option) {return options[option];},
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undo: operation(undo),
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redo: operation(redo),
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indentLine: operation(function(n) {if (isLine(n)) indentLine(n, "smart");}),
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historySize: function() {return {undo: history.done.length, redo: history.undone.length};},
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matchBrackets: operation(function(){matchBrackets(true);}),
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getTokenAt: function(pos) {
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pos = clipPos(pos);
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return lines[pos.line].getTokenAt(mode, getStateBefore(pos.line), pos.ch);
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},
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cursorCoords: function(start){
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if (start == null) start = sel.inverted;
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return pageCoords(start ? sel.from : sel.to);
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},
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charCoords: function(pos){return pageCoords(clipPos(pos));},
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coordsChar: function(coords) {
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var off = eltOffset(lineSpace);
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var line = Math.min(showingTo - 1, showingFrom + Math.floor(coords.y / lineHeight()));
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return clipPos({line: line, ch: charFromX(clipLine(line), coords.x)});
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},
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getSearchCursor: function(query, pos, caseFold) {return new SearchCursor(query, pos, caseFold);},
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markText: operation(function(a, b, c){return operation(markText(a, b, c));}),
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setMarker: addGutterMarker,
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clearMarker: removeGutterMarker,
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setLineClass: operation(setLineClass),
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lineInfo: lineInfo,
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addWidget: function(pos, node, scroll) {
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var pos = localCoords(clipPos(pos), true);
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node.style.top = (showingFrom * lineHeight() + pos.yBot + paddingTop()) + "px";
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node.style.left = (pos.x + paddingLeft()) + "px";
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code.appendChild(node);
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if (scroll)
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scrollIntoView(pos.x, pos.yBot, pos.x + node.offsetWidth, pos.yBot + node.offsetHeight);
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},
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lineCount: function() {return lines.length;},
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getCursor: function(start) {
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if (start == null) start = sel.inverted;
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return copyPos(start ? sel.from : sel.to);
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},
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somethingSelected: function() {return !posEq(sel.from, sel.to);},
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setCursor: operation(function(line, ch) {
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if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch);
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else setCursor(line, ch);
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}),
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setSelection: operation(function(from, to) {setSelection(clipPos(from), clipPos(to || from));}),
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getLine: function(line) {if (isLine(line)) return lines[line].text;},
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setLine: operation(function(line, text) {
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if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: lines[line].text.length});
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}),
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removeLine: operation(function(line) {
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if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0}));
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}),
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replaceRange: operation(replaceRange),
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getRange: function(from, to) {return getRange(clipPos(from), clipPos(to));},
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operation: function(f){return operation(f)();},
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refresh: function(){updateDisplay(true);},
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getInputField: function(){return input;},
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getWrapperElement: function(){return wrapper;}
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};
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function setValue(code) {
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history = null;
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var top = {line: 0, ch: 0};
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updateLines(top, {line: lines.length - 1, ch: lines[lines.length-1].text.length},
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splitLines(code), top, top);
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history = new History();
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}
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function getValue(code) {
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var text = [];
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for (var i = 0, l = lines.length; i < l; ++i)
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text.push(lines[i].text);
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return text.join("\n");
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}
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function onMouseDown(e) {
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// First, see if this is a click in the gutter
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for (var n = e.target(); n != wrapper; n = n.parentNode)
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if (n.parentNode == gutterText) {
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if (options.onGutterClick)
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options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom);
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return e.stop();
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}
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if (gecko && e.button() == 3) onContextMenu(e);
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if (e.button() != 1) return;
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// For button 1, if it was clicked inside the editor
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|
// (posFromMouse returning non-null), we have to adjust the
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// selection.
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var start = posFromMouse(e), last = start, going;
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if (!start) {if (e.target() == wrapper) e.stop(); return;}
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setCursor(start.line, start.ch, false);
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if (!focused) onFocus();
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e.stop();
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// And then we have to see if it's a drag event, in which case
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// the dragged-over text must be selected.
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function end() {
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input.focus();
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updateInput = true;
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move(); up();
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}
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function extend(e) {
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var cur = posFromMouse(e, true);
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if (cur && !posEq(cur, last)) {
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if (!focused) onFocus();
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last = cur;
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setSelection(start, cur);
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updateInput = false;
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var visible = visibleLines();
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if (cur.line >= visible.to || cur.line < visible.from)
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going = setTimeout(operation(function(){extend(e);}), 150);
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}
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}
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var move = connect(document, "mousemove", operation(function(e) {
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clearTimeout(going);
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e.stop();
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extend(e);
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}), true);
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var up = connect(document, "mouseup", operation(function(e) {
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clearTimeout(going);
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var cur = posFromMouse(e);
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if (cur) setSelection(start, cur);
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e.stop();
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end();
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}), true);
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}
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function onDblClick(e) {
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var pos = posFromMouse(e);
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if (!pos) return;
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selectWordAt(pos);
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e.stop();
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}
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function onDrop(e) {
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var pos = posFromMouse(e, true), files = e.e.dataTransfer.files;
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|
if (!pos || options.readOnly) return;
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if (files && files.length && window.FileReader && window.File) {
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var n = files.length, text = Array(n), read = 0;
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for (var i = 0; i < n; ++i) loadFile(files[i], i);
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function loadFile(file, i) {
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var reader = new FileReader;
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reader.onload = function() {
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text[i] = reader.result;
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if (++read == n) replaceRange(text.join(""), clipPos(pos), clipPos(pos));
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};
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reader.readAsText(file);
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}
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}
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else {
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try {
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var text = e.e.dataTransfer.getData("Text");
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if (text) replaceRange(text, pos, pos);
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}
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catch(e){}
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}
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}
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function onKeyDown(e) {
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if (!focused) onFocus();
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var code = e.e.keyCode;
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// Tries to detect ctrl on non-mac, cmd on mac.
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var mod = (mac ? e.e.metaKey : e.e.ctrlKey) && !e.e.altKey, anyMod = e.e.ctrlKey || e.e.altKey || e.e.metaKey;
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if (code == 16 || e.e.shiftKey) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from);
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else shiftSelecting = null;
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|
// First give onKeyEvent option a chance to handle this.
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|
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e.e))) return;
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if (code == 33 || code == 34) {scrollPage(code == 34); return e.stop();} // page up/down
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if (mod && (code == 36 || code == 35)) {scrollEnd(code == 36); return e.stop();} // ctrl-home/end
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if (mod && code == 65) {selectAll(); return e.stop();} // ctrl-a
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if (!options.readOnly) {
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if (!anyMod && code == 13) {return;} // enter
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if (!anyMod && code == 9 && handleTab(e.e.shiftKey)) return e.stop(); // tab
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if (mod && code == 90) {undo(); return e.stop();} // ctrl-z
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if (mod && ((e.e.shiftKey && code == 90) || code == 89)) {redo(); return e.stop();} // ctrl-shift-z, ctrl-y
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}
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|
// Key id to use in the movementKeys map. We also pass it to
|
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|
// fastPoll in order to 'self learn'. We need this because
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|
// reducedSelection, the hack where we collapse the selection to
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|
// its start when it is inverted and a movement key is pressed
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|
// (and later restore it again), shouldn't be used for
|
|
|
// non-movement keys.
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|
curKeyId = (mod ? "c" : "") + code;
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|
|
if (sel.inverted && movementKeys.hasOwnProperty(curKeyId)) {
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|
var range = selRange(input);
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|
if (range) {
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|
reducedSelection = {anchor: range.start};
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|
|
setSelRange(input, range.start, range.start);
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|
}
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|
}
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|
|
fastPoll(curKeyId);
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|
}
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|
|
function onKeyUp(e) {
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|
|
if (reducedSelection) {
|
|
|
reducedSelection = null;
|
|
|
updateInput = true;
|
|
|
}
|
|
|
if (e.e.keyCode == 16) shiftSelecting = null;
|
|
|
}
|
|
|
function onKeyPress(e) {
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|
|
if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e.e))) return;
|
|
|
if (options.electricChars && mode.electricChars) {
|
|
|
var ch = String.fromCharCode(e.e.charCode == null ? e.e.keyCode : e.e.charCode);
|
|
|
if (mode.electricChars.indexOf(ch) > -1)
|
|
|
setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 50);
|
|
|
}
|
|
|
var code = e.e.keyCode;
|
|
|
// Re-stop tab and enter. Necessary on some browsers.
|
|
|
if (code == 13) {handleEnter(); e.stop();}
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|
|
else if (code == 9 && options.tabMode != "default") e.stop();
|
|
|
else fastPoll(curKeyId);
|
|
|
}
|
|
|
|
|
|
function onFocus() {
|
|
|
if (!focused && options.onFocus) options.onFocus(instance);
|
|
|
focused = true;
|
|
|
slowPoll();
|
|
|
if (wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
|
|
|
wrapper.className += " CodeMirror-focused";
|
|
|
restartBlink();
|
|
|
}
|
|
|
function onBlur() {
|
|
|
if (focused && options.onBlur) options.onBlur(instance);
|
|
|
clearInterval(blinker);
|
|
|
shiftSelecting = null;
|
|
|
focused = false;
|
|
|
wrapper.className = wrapper.className.replace(" CodeMirror-focused", "");
|
|
|
}
|
|
|
|
|
|
// Replace the range from from to to by the strings in newText.
|
|
|
// Afterwards, set the selection to selFrom, selTo.
|
|
|
function updateLines(from, to, newText, selFrom, selTo) {
|
|
|
if (history) {
|
|
|
var old = [];
|
|
|
for (var i = from.line, e = to.line + 1; i < e; ++i) old.push(lines[i].text);
|
|
|
history.addChange(from.line, newText.length, old);
|
|
|
while (history.done.length > options.undoDepth) history.done.shift();
|
|
|
}
|
|
|
updateLinesNoUndo(from, to, newText, selFrom, selTo);
|
|
|
}
|
|
|
function unredoHelper(from, to) {
|
|
|
var change = from.pop();
|
|
|
if (change) {
|
|
|
var replaced = [], end = change.start + change.added;
|
|
|
for (var i = change.start; i < end; ++i) replaced.push(lines[i].text);
|
|
|
to.push({start: change.start, added: change.old.length, old: replaced});
|
|
|
var pos = clipPos({line: change.start + change.old.length - 1,
|
|
|
ch: editEnd(replaced[replaced.length-1], change.old[change.old.length-1])});
|
|
|
updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: lines[end-1].text.length}, change.old, pos, pos);
|
|
|
}
|
|
|
}
|
|
|
function undo() {unredoHelper(history.done, history.undone);}
|
|
|
function redo() {unredoHelper(history.undone, history.done);}
|
|
|
|
|
|
function updateLinesNoUndo(from, to, newText, selFrom, selTo) {
|
|
|
var nlines = to.line - from.line, firstLine = lines[from.line], lastLine = lines[to.line];
|
|
|
// First adjust the line structure, taking some care to leave highlighting intact.
|
|
|
if (firstLine == lastLine) {
|
|
|
if (newText.length == 1)
|
|
|
firstLine.replace(from.ch, to.ch, newText[0]);
|
|
|
else {
|
|
|
lastLine = firstLine.split(to.ch, newText[newText.length-1]);
|
|
|
var spliceargs = [from.line + 1, nlines];
|
|
|
firstLine.replace(from.ch, firstLine.text.length, newText[0]);
|
|
|
for (var i = 1, e = newText.length - 1; i < e; ++i) spliceargs.push(new Line(newText[i]));
|
|
|
spliceargs.push(lastLine);
|
|
|
lines.splice.apply(lines, spliceargs);
|
|
|
}
|
|
|
}
|
|
|
else if (newText.length == 1) {
|
|
|
firstLine.replace(from.ch, firstLine.text.length, newText[0] + lastLine.text.slice(to.ch));
|
|
|
lines.splice(from.line + 1, nlines);
|
|
|
}
|
|
|
else {
|
|
|
var spliceargs = [from.line + 1, nlines - 1];
|
|
|
firstLine.replace(from.ch, firstLine.text.length, newText[0]);
|
|
|
lastLine.replace(0, to.ch, newText[newText.length-1]);
|
|
|
for (var i = 1, e = newText.length - 1; i < e; ++i) spliceargs.push(new Line(newText[i]));
|
|
|
lines.splice.apply(lines, spliceargs);
|
|
|
}
|
|
|
|
|
|
// Add these lines to the work array, so that they will be
|
|
|
// highlighted. Adjust work lines if lines were added/removed.
|
|
|
var newWork = [], lendiff = newText.length - nlines - 1;
|
|
|
for (var i = 0, l = work.length; i < l; ++i) {
|
|
|
var task = work[i];
|
|
|
if (task < from.line) newWork.push(task);
|
|
|
else if (task > to.line) newWork.push(task + lendiff);
|
|
|
}
|
|
|
if (newText.length) newWork.push(from.line);
|
|
|
work = newWork;
|
|
|
startWorker(100);
|
|
|
// Remember that these lines changed, for updating the display
|
|
|
changes.push({from: from.line, to: to.line + 1, diff: lendiff});
|
|
|
textChanged = true;
|
|
|
|
|
|
// Update the selection
|
|
|
function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
|
|
|
setSelection(selFrom, selTo, updateLine(sel.from.line), updateLine(sel.to.line));
|
|
|
|
|
|
// Make sure the scroll-size div has the correct height.
|
|
|
code.style.height = (lines.length * lineHeight() + 2 * paddingTop()) + "px";
|
|
|
}
|
|
|
|
|
|
function replaceRange(code, from, to) {
|
|
|
from = clipPos(from);
|
|
|
if (!to) to = from; else to = clipPos(to);
|
|
|
code = splitLines(code);
|
|
|
function adjustPos(pos) {
|
|
|
if (posLess(pos, from)) return pos;
|
|
|
if (!posLess(to, pos)) return end;
|
|
|
var line = pos.line + code.length - (to.line - from.line) - 1;
|
|
|
var ch = pos.ch;
|
|
|
if (pos.line == to.line)
|
|
|
ch += code[code.length-1].length - (to.ch - (to.line == from.line ? from.ch : 0));
|
|
|
return {line: line, ch: ch};
|
|
|
}
|
|
|
var end;
|
|
|
replaceRange1(code, from, to, function(end1) {
|
|
|
end = end1;
|
|
|
return {from: adjustPos(sel.from), to: adjustPos(sel.to)};
|
|
|
});
|
|
|
return end;
|
|
|
}
|
|
|
function replaceSelection(code, collapse) {
|
|
|
replaceRange1(splitLines(code), sel.from, sel.to, function(end) {
|
|
|
if (collapse == "end") return {from: end, to: end};
|
|
|
else if (collapse == "start") return {from: sel.from, to: sel.from};
|
|
|
else return {from: sel.from, to: end};
|
|
|
});
|
|
|
}
|
|
|
function replaceRange1(code, from, to, computeSel) {
|
|
|
var endch = code.length == 1 ? code[0].length + from.ch : code[code.length-1].length;
|
|
|
var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
|
|
|
updateLines(from, to, code, newSel.from, newSel.to);
|
|
|
}
|
|
|
|
|
|
function getRange(from, to) {
|
|
|
var l1 = from.line, l2 = to.line;
|
|
|
if (l1 == l2) return lines[l1].text.slice(from.ch, to.ch);
|
|
|
var code = [lines[l1].text.slice(from.ch)];
|
|
|
for (var i = l1 + 1; i < l2; ++i) code.push(lines[i].text);
|
|
|
code.push(lines[l2].text.slice(0, to.ch));
|
|
|
return code.join("\n");
|
|
|
}
|
|
|
function getSelection() {
|
|
|
return getRange(sel.from, sel.to);
|
|
|
}
|
|
|
|
|
|
var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
|
|
|
function slowPoll() {
|
|
|
if (pollingFast) return;
|
|
|
poll.set(2000, function() {
|
|
|
startOperation();
|
|
|
readInput();
|
|
|
if (focused) slowPoll();
|
|
|
endOperation();
|
|
|
});
|
|
|
}
|
|
|
function fastPoll(keyId) {
|
|
|
var missed = false;
|
|
|
pollingFast = true;
|
|
|
function p() {
|
|
|
startOperation();
|
|
|
var changed = readInput();
|
|
|
if (changed == "moved" && keyId) movementKeys[keyId] = true;
|
|
|
if (!changed && !missed) {missed = true; poll.set(80, p);}
|
|
|
else {pollingFast = false; slowPoll();}
|
|
|
endOperation();
|
|
|
}
|
|
|
poll.set(20, p);
|
|
|
}
|
|
|
|
|
|
// Inspects the textarea, compares its state (content, selection)
|
|
|
// to the data in the editing variable, and updates the editor
|
|
|
// content or cursor if something changed.
|
|
|
function readInput() {
|
|
|
var changed = false, text = input.value, sr = selRange(input);
|
|
|
if (!sr) return false;
|
|
|
var changed = editing.text != text, rs = reducedSelection;
|
|
|
var moved = changed || sr.start != editing.start || sr.end != (rs ? editing.start : editing.end);
|
|
|
if (reducedSelection && !moved && sel.from.line == 0 && sel.from.ch == 0)
|
|
|
reducedSelection = null;
|
|
|
else if (!moved) return false;
|
|
|
if (changed) {
|
|
|
shiftSelecting = reducedSelection = null;
|
|
|
if (options.readOnly) {updateInput = true; return "changed";}
|
|
|
}
|
|
|
|
|
|
// Compute selection start and end based on start/end offsets in textarea
|
|
|
function computeOffset(n, startLine) {
|
|
|
var pos = 0;
|
|
|
for (;;) {
|
|
|
var found = text.indexOf("\n", pos);
|
|
|
if (found == -1 || (text.charAt(found-1) == "\r" ? found - 1 : found) >= n)
|
|
|
return {line: startLine, ch: n - pos};
|
|
|
++startLine;
|
|
|
pos = found + 1;
|
|
|
}
|
|
|
}
|
|
|
var from = computeOffset(sr.start, editing.from),
|
|
|
to = computeOffset(sr.end, editing.from);
|
|
|
// Here we have to take the reducedSelection hack into account,
|
|
|
// so that you can, for example, press shift-up at the start of
|
|
|
// your selection and have the right thing happen.
|
|
|
if (rs) {
|
|
|
from = sr.start == rs.anchor ? to : from;
|
|
|
to = shiftSelecting ? sel.to : sr.start == rs.anchor ? from : to;
|
|
|
if (!posLess(from, to)) {
|
|
|
reducedSelection = null;
|
|
|
sel.inverted = false;
|
|
|
var tmp = from; from = to; to = tmp;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// In some cases (cursor on same line as before), we don't have
|
|
|
// to update the textarea content at all.
|
|
|
if (from.line == to.line && from.line == sel.from.line && from.line == sel.to.line && !shiftSelecting)
|
|
|
updateInput = false;
|
|
|
|
|
|
// Magic mess to extract precise edited range from the changed
|
|
|
// string.
|
|
|
if (changed) {
|
|
|
var start = 0, end = text.length, len = Math.min(end, editing.text.length);
|
|
|
var c, line = editing.from, nl = -1;
|
|
|
while (start < len && (c = text.charAt(start)) == editing.text.charAt(start)) {
|
|
|
++start;
|
|
|
if (c == "\n") {line++; nl = start;}
|
|
|
}
|
|
|
var ch = nl > -1 ? start - nl : start, endline = editing.to - 1, edend = editing.text.length;
|
|
|
for (;;) {
|
|
|
c = editing.text.charAt(edend);
|
|
|
if (c == "\n") endline--;
|
|
|
if (text.charAt(end) != c) {++end; ++edend; break;}
|
|
|
if (edend <= start || end <= start) break;
|
|
|
--end; --edend;
|
|
|
}
|
|
|
var nl = editing.text.lastIndexOf("\n", edend - 1), endch = nl == -1 ? edend : edend - nl - 1;
|
|
|
updateLines({line: line, ch: ch}, {line: endline, ch: endch}, splitLines(text.slice(start, end)), from, to);
|
|
|
if (line != endline || from.line != line) updateInput = true;
|
|
|
}
|
|
|
else setSelection(from, to);
|
|
|
|
|
|
editing.text = text; editing.start = sr.start; editing.end = sr.end;
|
|
|
return changed ? "changed" : moved ? "moved" : false;
|
|
|
}
|
|
|
|
|
|
// Set the textarea content and selection range to match the
|
|
|
// editor state.
|
|
|
function prepareInput() {
|
|
|
var text = [];
|
|
|
var from = Math.max(0, sel.from.line - 1), to = Math.min(lines.length, sel.to.line + 2);
|
|
|
for (var i = from; i < to; ++i) text.push(lines[i].text);
|
|
|
text = input.value = text.join(lineSep);
|
|
|
var startch = sel.from.ch, endch = sel.to.ch;
|
|
|
for (var i = from; i < sel.from.line; ++i)
|
|
|
startch += lineSep.length + lines[i].text.length;
|
|
|
for (var i = from; i < sel.to.line; ++i)
|
|
|
endch += lineSep.length + lines[i].text.length;
|
|
|
editing = {text: text, from: from, to: to, start: startch, end: endch};
|
|
|
setSelRange(input, startch, reducedSelection ? startch : endch);
|
|
|
}
|
|
|
|
|
|
function scrollCursorIntoView() {
|
|
|
var cursor = localCoords(sel.inverted ? sel.from : sel.to);
|
|
|
return scrollIntoView(cursor.x, cursor.y, cursor.x, cursor.yBot);
|
|
|
}
|
|
|
function scrollIntoView(x1, y1, x2, y2) {
|
|
|
var pl = paddingLeft(), pt = paddingTop();
|
|
|
y1 += pt; y2 += pt; x1 += pl; x2 += pl;
|
|
|
var screen = wrapper.clientHeight, screentop = wrapper.scrollTop, scrolled = false, result = true;
|
|
|
if (y1 < screentop) {wrapper.scrollTop = Math.max(0, y1 - 10); scrolled = true;}
|
|
|
else if (y2 > screentop + screen) {wrapper.scrollTop = y2 + 10 - screen; scrolled = true;}
|
|
|
|
|
|
var screenw = wrapper.clientWidth, screenleft = wrapper.scrollLeft;
|
|
|
if (x1 < screenleft) {wrapper.scrollLeft = Math.max(0, x1 - 10); scrolled = true;}
|
|
|
else if (x2 > screenw + screenleft) {
|
|
|
wrapper.scrollLeft = x2 + 10 - screenw;
|
|
|
scrolled = true;
|
|
|
if (x2 > code.clientWidth) result = false;
|
|
|
}
|
|
|
if (scrolled && options.onScroll) options.onScroll(instance);
|
|
|
return result;
|
|
|
}
|
|
|
|
|
|
function visibleLines() {
|
|
|
var lh = lineHeight(), top = wrapper.scrollTop - paddingTop();
|
|
|
return {from: Math.min(lines.length, Math.max(0, Math.floor(top / lh))),
|
|
|
to: Math.min(lines.length, Math.ceil((top + wrapper.clientHeight) / lh))};
|
|
|
}
|
|
|
// Uses a set of changes plus the current scroll position to
|
|
|
// determine which DOM updates have to be made, and makes the
|
|
|
// updates.
|
|
|
function updateDisplay(changes) {
|
|
|
if (!wrapper.clientWidth) {
|
|
|
showingFrom = showingTo = 0;
|
|
|
return;
|
|
|
}
|
|
|
// First create a range of theoretically intact lines, and punch
|
|
|
// holes in that using the change info.
|
|
|
var intact = changes === true ? [] : [{from: showingFrom, to: showingTo, domStart: 0}];
|
|
|
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)
|
|
|
intact2.push({from: range.from + diff, to: range.to + diff, domStart: range.domStart});
|
|
|
else if (range.to <= change.from)
|
|
|
intact2.push(range);
|
|
|
else {
|
|
|
if (change.from > range.from)
|
|
|
intact2.push({from: range.from, to: change.from, domStart: range.domStart})
|
|
|
if (change.to < range.to)
|
|
|
intact2.push({from: change.to + diff, to: range.to + diff,
|
|
|
domStart: range.domStart + (change.to - range.from)});
|
|
|
}
|
|
|
}
|
|
|
intact = intact2;
|
|
|
}
|
|
|
|
|
|
// Then, determine which lines we'd want to see, and which
|
|
|
// updates have to be made to get there.
|
|
|
var visible = visibleLines();
|
|
|
var from = Math.min(showingFrom, Math.max(visible.from - 3, 0)),
|
|
|
to = Math.min(lines.length, Math.max(showingTo, visible.to + 3)),
|
|
|
updates = [], domPos = 0, domEnd = showingTo - showingFrom, pos = from, changedLines = 0;
|
|
|
|
|
|
for (var i = 0, l = intact.length; i < l; ++i) {
|
|
|
var range = intact[i];
|
|
|
if (range.to <= from) continue;
|
|
|
if (range.from >= to) break;
|
|
|
if (range.domStart > domPos || range.from > pos) {
|
|
|
updates.push({from: pos, to: range.from, domSize: range.domStart - domPos, domStart: domPos});
|
|
|
changedLines += range.from - pos;
|
|
|
}
|
|
|
pos = range.to;
|
|
|
domPos = range.domStart + (range.to - range.from);
|
|
|
}
|
|
|
if (domPos != domEnd || pos != to) {
|
|
|
changedLines += Math.abs(to - pos);
|
|
|
updates.push({from: pos, to: to, domSize: domEnd - domPos, domStart: domPos});
|
|
|
}
|
|
|
|
|
|
if (!updates.length) return;
|
|
|
lineDiv.style.display = "none";
|
|
|
// If more than 30% of the screen needs update, just do a full
|
|
|
// redraw (which is quicker than patching)
|
|
|
if (changedLines > (visible.to - visible.from) * .3)
|
|
|
refreshDisplay(from = Math.max(visible.from - 10, 0), to = Math.min(visible.to + 7, lines.length));
|
|
|
// Otherwise, only update the stuff that needs updating.
|
|
|
else
|
|
|
patchDisplay(updates);
|
|
|
lineDiv.style.display = "";
|
|
|
|
|
|
// Position the mover div to align with the lines it's supposed
|
|
|
// to be showing (which will cover the visible display)
|
|
|
var different = from != showingFrom || to != showingTo || lastHeight != wrapper.clientHeight;
|
|
|
showingFrom = from; showingTo = to;
|
|
|
mover.style.top = (from * lineHeight()) + "px";
|
|
|
if (different) {
|
|
|
lastHeight = wrapper.clientHeight;
|
|
|
code.style.height = (lines.length * lineHeight() + 2 * paddingTop()) + "px";
|
|
|
updateGutter();
|
|
|
}
|
|
|
|
|
|
// Since this is all rather error prone, it is honoured with the
|
|
|
// only assertion in the whole file.
|
|
|
if (lineDiv.childNodes.length != showingTo - showingFrom)
|
|
|
throw new Error("BAD PATCH! " + JSON.stringify(updates) + " size=" + (showingTo - showingFrom) +
|
|
|
" nodes=" + lineDiv.childNodes.length);
|
|
|
updateCursor();
|
|
|
}
|
|
|
|
|
|
function refreshDisplay(from, to) {
|
|
|
var html = [], start = {line: from, ch: 0}, inSel = posLess(sel.from, start) && !posLess(sel.to, start);
|
|
|
for (var i = from; i < to; ++i) {
|
|
|
var ch1 = null, ch2 = null;
|
|
|
if (inSel) {
|
|
|
ch1 = 0;
|
|
|
if (sel.to.line == i) {inSel = false; ch2 = sel.to.ch;}
|
|
|
}
|
|
|
else if (sel.from.line == i) {
|
|
|
if (sel.to.line == i) {ch1 = sel.from.ch; ch2 = sel.to.ch;}
|
|
|
else {inSel = true; ch1 = sel.from.ch;}
|
|
|
}
|
|
|
html.push(lines[i].getHTML(ch1, ch2, true));
|
|
|
}
|
|
|
lineDiv.innerHTML = html.join("");
|
|
|
}
|
|
|
function patchDisplay(updates) {
|
|
|
// Slightly different algorithm for IE (badInnerHTML), since
|
|
|
// there .innerHTML on PRE nodes is dumb, and discards
|
|
|
// whitespace.
|
|
|
var sfrom = sel.from.line, sto = sel.to.line, off = 0,
|
|
|
scratch = badInnerHTML && document.createElement("div");
|
|
|
for (var i = 0, e = updates.length; i < e; ++i) {
|
|
|
var rec = updates[i];
|
|
|
var extra = (rec.to - rec.from) - rec.domSize;
|
|
|
var nodeAfter = lineDiv.childNodes[rec.domStart + rec.domSize + off] || null;
|
|
|
if (badInnerHTML)
|
|
|
for (var j = Math.max(-extra, rec.domSize); j > 0; --j)
|
|
|
lineDiv.removeChild(nodeAfter ? nodeAfter.previousSibling : lineDiv.lastChild);
|
|
|
else if (extra) {
|
|
|
for (var j = Math.max(0, extra); j > 0; --j)
|
|
|
lineDiv.insertBefore(document.createElement("pre"), nodeAfter);
|
|
|
for (var j = Math.max(0, -extra); j > 0; --j)
|
|
|
lineDiv.removeChild(nodeAfter ? nodeAfter.previousSibling : lineDiv.lastChild);
|
|
|
}
|
|
|
var node = lineDiv.childNodes[rec.domStart + off], inSel = sfrom < rec.from && sto >= rec.from;
|
|
|
for (var j = rec.from; j < rec.to; ++j) {
|
|
|
var ch1 = null, ch2 = null;
|
|
|
if (inSel) {
|
|
|
ch1 = 0;
|
|
|
if (sto == j) {inSel = false; ch2 = sel.to.ch;}
|
|
|
}
|
|
|
else if (sfrom == j) {
|
|
|
if (sto == j) {ch1 = sel.from.ch; ch2 = sel.to.ch;}
|
|
|
else {inSel = true; ch1 = sel.from.ch;}
|
|
|
}
|
|
|
if (badInnerHTML) {
|
|
|
scratch.innerHTML = lines[j].getHTML(ch1, ch2, true);
|
|
|
lineDiv.insertBefore(scratch.firstChild, nodeAfter);
|
|
|
}
|
|
|
else {
|
|
|
node.innerHTML = lines[j].getHTML(ch1, ch2, false);
|
|
|
node.className = lines[j].className || "";
|
|
|
node = node.nextSibling;
|
|
|
}
|
|
|
}
|
|
|
off += extra;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
function updateGutter() {
|
|
|
if (!options.gutter && !options.lineNumbers) return;
|
|
|
var hText = mover.offsetHeight, hEditor = wrapper.clientHeight;
|
|
|
gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px";
|
|
|
var html = [];
|
|
|
for (var i = showingFrom; i < showingTo; ++i) {
|
|
|
var marker = lines[i].gutterMarker;
|
|
|
var text = options.lineNumbers ? i + options.firstLineNumber : null;
|
|
|
if (marker && marker.text)
|
|
|
text = marker.text.replace("%N%", text != null ? text : "");
|
|
|
else if (text == null)
|
|
|
text = "\u00a0";
|
|
|
html.push((marker && marker.style ? '<pre class="' + marker.style + '">' : "<pre>"), text, "</pre>");
|
|
|
}
|
|
|
gutter.style.display = "none";
|
|
|
gutterText.innerHTML = html.join("");
|
|
|
var minwidth = String(lines.length).length, firstNode = gutterText.firstChild, val = eltText(firstNode), pad = "";
|
|
|
while (val.length + pad.length < minwidth) pad += "\u00a0";
|
|
|
if (pad) firstNode.insertBefore(document.createTextNode(pad), firstNode.firstChild);
|
|
|
gutter.style.display = "";
|
|
|
lineSpace.style.marginLeft = gutter.offsetWidth + "px";
|
|
|
}
|
|
|
function updateCursor() {
|
|
|
var head = sel.inverted ? sel.from : sel.to;
|
|
|
var x = charX(head.line, head.ch) + "px", y = (head.line - showingFrom) * lineHeight() + "px";
|
|
|
inputDiv.style.top = y; inputDiv.style.left = x;
|
|
|
if (posEq(sel.from, sel.to)) {
|
|
|
cursor.style.top = y; cursor.style.left = x;
|
|
|
cursor.style.display = "";
|
|
|
}
|
|
|
else cursor.style.display = "none";
|
|
|
}
|
|
|
|
|
|
// Update the selection. Last two args are only used by
|
|
|
// updateLines, since they have to be expressed in the line
|
|
|
// numbers before the update.
|
|
|
function setSelection(from, to, oldFrom, oldTo) {
|
|
|
if (posEq(sel.from, from) && posEq(sel.to, to)) return;
|
|
|
var sh = shiftSelecting && clipPos(shiftSelecting);
|
|
|
if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
|
|
|
if (sh) {
|
|
|
if (posLess(sh, from)) from = sh;
|
|
|
else if (posLess(to, sh)) to = sh;
|
|
|
}
|
|
|
|
|
|
var startEq = posEq(sel.to, to), endEq = posEq(sel.from, from);
|
|
|
if (posEq(from, to)) sel.inverted = false;
|
|
|
else if (startEq && !endEq) sel.inverted = true;
|
|
|
else if (endEq && !startEq) sel.inverted = false;
|
|
|
|
|
|
// Some ugly logic used to only mark the lines that actually did
|
|
|
// see a change in selection as changed, rather than the whole
|
|
|
// selected range.
|
|
|
if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;}
|
|
|
if (posEq(from, to)) {
|
|
|
if (!posEq(sel.from, sel.to))
|
|
|
changes.push({from: oldFrom, to: oldTo + 1});
|
|
|
}
|
|
|
else if (posEq(sel.from, sel.to)) {
|
|
|
changes.push({from: from.line, to: to.line + 1});
|
|
|
}
|
|
|
else {
|
|
|
if (!posEq(from, sel.from)) {
|
|
|
if (from.line < oldFrom)
|
|
|
changes.push({from: from.line, to: Math.min(to.line, oldFrom) + 1});
|
|
|
else
|
|
|
changes.push({from: oldFrom, to: Math.min(oldTo, from.line) + 1});
|
|
|
}
|
|
|
if (!posEq(to, sel.to)) {
|
|
|
if (to.line < oldTo)
|
|
|
changes.push({from: Math.max(oldFrom, from.line), to: oldTo + 1});
|
|
|
else
|
|
|
changes.push({from: Math.max(from.line, oldTo), to: to.line + 1});
|
|
|
}
|
|
|
}
|
|
|
sel.from = from; sel.to = to;
|
|
|
selectionChanged = true;
|
|
|
}
|
|
|
function setCursor(line, ch) {
|
|
|
var pos = clipPos({line: line, ch: ch || 0});
|
|
|
setSelection(pos, pos);
|
|
|
}
|
|
|
|
|
|
function clipLine(n) {return Math.max(0, Math.min(n, lines.length-1));}
|
|
|
function clipPos(pos) {
|
|
|
if (pos.line < 0) return {line: 0, ch: 0};
|
|
|
if (pos.line >= lines.length) return {line: lines.length-1, ch: lines[lines.length-1].text.length};
|
|
|
var ch = pos.ch, linelen = lines[pos.line].text.length;
|
|
|
if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
|
|
|
else if (ch < 0) return {line: pos.line, ch: 0};
|
|
|
else return pos;
|
|
|
}
|
|
|
|
|
|
function scrollPage(down) {
|
|
|
var linesPerPage = Math.floor(wrapper.clientHeight / lineHeight()), head = sel.inverted ? sel.from : sel.to;
|
|
|
setCursor(head.line + (Math.max(linesPerPage - 1, 1) * (down ? 1 : -1)), head.ch);
|
|
|
}
|
|
|
function scrollEnd(top) {
|
|
|
setCursor(top ? 0 : lines.length - 1);
|
|
|
}
|
|
|
function selectAll() {
|
|
|
var endLine = lines.length - 1;
|
|
|
setSelection({line: 0, ch: 0}, {line: endLine, ch: lines[endLine].text.length});
|
|
|
}
|
|
|
function selectWordAt(pos) {
|
|
|
var line = lines[pos.line].text;
|
|
|
var start = pos.ch, end = pos.ch;
|
|
|
while (start > 0 && /\w/.test(line.charAt(start - 1))) --start;
|
|
|
while (end < line.length - 1 && /\w/.test(line.charAt(end))) ++end;
|
|
|
setSelection({line: pos.line, ch: start}, {line: pos.line, ch: end});
|
|
|
}
|
|
|
function handleEnter() {
|
|
|
replaceSelection("\n", "end");
|
|
|
if (options.enterMode != "flat")
|
|
|
indentLine(sel.from.line, options.enterMode == "keep" ? "prev" : "smart");
|
|
|
}
|
|
|
function handleTab(shift) {
|
|
|
shiftSelecting = null;
|
|
|
switch (options.tabMode) {
|
|
|
case "default":
|
|
|
return false;
|
|
|
case "indent":
|
|
|
for (var i = sel.from.line, e = sel.to.line; i <= e; ++i) indentLine(i, "smart");
|
|
|
break;
|
|
|
case "classic":
|
|
|
if (posEq(sel.from, sel.to)) {
|
|
|
if (shift) indentLine(sel.from.line, "smart");
|
|
|
else replaceSelection("\t", "end");
|
|
|
break;
|
|
|
}
|
|
|
case "shift":
|
|
|
for (var i = sel.from.line, e = sel.to.line; i <= e; ++i) indentLine(i, shift ? "subtract" : "add");
|
|
|
break;
|
|
|
}
|
|
|
return true;
|
|
|
}
|
|
|
|
|
|
function indentLine(n, how) {
|
|
|
if (how == "smart") {
|
|
|
if (!mode.indent) how = "prev";
|
|
|
else var state = getStateBefore(n);
|
|
|
}
|
|
|
|
|
|
var line = lines[n], curSpace = line.indentation(), curSpaceString = line.text.match(/^\s*/)[0], indentation;
|
|
|
if (how == "prev") {
|
|
|
if (n) indentation = lines[n-1].indentation();
|
|
|
else indentation = 0;
|
|
|
}
|
|
|
else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length));
|
|
|
else if (how == "add") indentation = curSpace + options.indentUnit;
|
|
|
else if (how == "subtract") indentation = curSpace - options.indentUnit;
|
|
|
indentation = Math.max(0, indentation);
|
|
|
var diff = indentation - curSpace;
|
|
|
|
|
|
if (!diff) {
|
|
|
if (sel.from.line != n && sel.to.line != n) return;
|
|
|
var indentString = curSpaceString;
|
|
|
}
|
|
|
else {
|
|
|
var indentString = "", pos = 0;
|
|
|
if (options.indentWithTabs)
|
|
|
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
|
|
|
while (pos < indentation) {++pos; indentString += " ";}
|
|
|
}
|
|
|
|
|
|
replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
|
|
|
}
|
|
|
|
|
|
function loadMode() {
|
|
|
mode = CodeMirror.getMode(options, options.mode);
|
|
|
for (var i = 0, l = lines.length; i < l; ++i)
|
|
|
lines[i].stateAfter = null;
|
|
|
work = [0];
|
|
|
}
|
|
|
function gutterChanged() {
|
|
|
var visible = options.gutter || options.lineNumbers;
|
|
|
gutter.style.display = visible ? "" : "none";
|
|
|
if (visible) updateGutter();
|
|
|
else lineDiv.parentNode.style.marginLeft = 0;
|
|
|
}
|
|
|
|
|
|
function markText(from, to, className) {
|
|
|
from = clipPos(from); to = clipPos(to);
|
|
|
var accum = [];
|
|
|
function add(line, from, to, className) {
|
|
|
var line = lines[line], mark = line.addMark(from, to, className);
|
|
|
mark.line = line;
|
|
|
accum.push(mark);
|
|
|
}
|
|
|
if (from.line == to.line) add(from.line, from.ch, to.ch, className);
|
|
|
else {
|
|
|
add(from.line, from.ch, null, className);
|
|
|
for (var i = from.line + 1, e = to.line; i < e; ++i)
|
|
|
add(i, 0, null, className);
|
|
|
add(to.line, 0, to.ch, className);
|
|
|
}
|
|
|
changes.push({from: from.line, to: to.line + 1});
|
|
|
return function() {
|
|
|
var start, end;
|
|
|
for (var i = 0; i < accum.length; ++i) {
|
|
|
var mark = accum[i], found = indexOf(lines, mark.line);
|
|
|
mark.line.removeMark(mark);
|
|
|
if (found > -1) {
|
|
|
if (start == null) start = found;
|
|
|
end = found;
|
|
|
}
|
|
|
}
|
|
|
if (start != null) changes.push({from: start, to: end + 1});
|
|
|
};
|
|
|
}
|
|
|
|
|
|
function addGutterMarker(line, text, className) {
|
|
|
if (typeof line == "number") line = lines[clipLine(line)];
|
|
|
line.gutterMarker = {text: text, style: className};
|
|
|
updateGutter();
|
|
|
return line;
|
|
|
}
|
|
|
function removeGutterMarker(line) {
|
|
|
if (typeof line == "number") line = lines[clipLine(line)];
|
|
|
line.gutterMarker = null;
|
|
|
updateGutter();
|
|
|
}
|
|
|
function setLineClass(line, className) {
|
|
|
if (typeof line == "number") {
|
|
|
var no = line;
|
|
|
line = lines[clipLine(line)];
|
|
|
}
|
|
|
else {
|
|
|
var no = indexOf(lines, line);
|
|
|
if (no == -1) return null;
|
|
|
}
|
|
|
line.className = className;
|
|
|
changes.push({from: no, to: no + 1});
|
|
|
return line;
|
|
|
}
|
|
|
|
|
|
function lineInfo(line) {
|
|
|
if (typeof line == "number") {
|
|
|
var n = line;
|
|
|
line = lines[line];
|
|
|
if (!line) return null;
|
|
|
}
|
|
|
else {
|
|
|
var n = indexOf(lines, line);
|
|
|
if (n == -1) return null;
|
|
|
}
|
|
|
var marker = line.gutterMarker;
|
|
|
return {line: n, text: line.text, markerText: marker && marker.text, markerClass: marker && marker.style};
|
|
|
}
|
|
|
|
|
|
// These are used to go from pixel positions to character
|
|
|
// positions, taking tabs into account.
|
|
|
function charX(line, pos) {
|
|
|
var text = lines[line].text, span = measure.firstChild;
|
|
|
if (text.lastIndexOf("\t", pos) == -1) return pos * charWidth();
|
|
|
var old = span.firstChild.nodeValue;
|
|
|
try {
|
|
|
span.firstChild.nodeValue = text.slice(0, pos);
|
|
|
return span.offsetWidth;
|
|
|
} finally {span.firstChild.nodeValue = old;}
|
|
|
}
|
|
|
function charFromX(line, x) {
|
|
|
var text = lines[line].text, cw = charWidth();
|
|
|
if (x <= 0) return 0;
|
|
|
if (text.indexOf("\t") == -1) return Math.min(text.length, Math.round(x / cw));
|
|
|
var mspan = measure.firstChild, mtext = mspan.firstChild, old = mtext.nodeValue;
|
|
|
try {
|
|
|
mtext.nodeValue = text;
|
|
|
var from = 0, fromX = 0, to = text.length, toX = mspan.offsetWidth;
|
|
|
if (x > toX) return to;
|
|
|
for (;;) {
|
|
|
if (to - from <= 1) return (toX - x > x - fromX) ? from : to;
|
|
|
var middle = Math.ceil((from + to) / 2);
|
|
|
mtext.nodeValue = text.slice(0, middle);
|
|
|
var curX = mspan.offsetWidth;
|
|
|
if (curX > x) {to = middle; toX = curX;}
|
|
|
else {from = middle; fromX = curX;}
|
|
|
}
|
|
|
} finally {mtext.nodeValue = old;}
|
|
|
}
|
|
|
|
|
|
function localCoords(pos, inLineWrap) {
|
|
|
var lh = lineHeight(), line = pos.line - (inLineWrap ? showingFrom : 0);
|
|
|
return {x: charX(pos.line, pos.ch), y: line * lh, yBot: (line + 1) * lh};
|
|
|
}
|
|
|
function pageCoords(pos) {
|
|
|
var local = localCoords(pos, true), off = eltOffset(lineSpace);
|
|
|
return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
|
|
|
}
|
|
|
|
|
|
function lineHeight() {
|
|
|
var nlines = lineDiv.childNodes.length;
|
|
|
if (nlines) return lineDiv.offsetHeight / nlines;
|
|
|
else return measure.firstChild.offsetHeight || 1;
|
|
|
}
|
|
|
function charWidth() {return (measure.firstChild.offsetWidth || 320) / 40;}
|
|
|
function paddingTop() {return lineSpace.offsetTop;}
|
|
|
function paddingLeft() {return lineSpace.offsetLeft;}
|
|
|
|
|
|
function posFromMouse(e, liberal) {
|
|
|
var off = eltOffset(lineSpace),
|
|
|
x = e.pageX() - off.left,
|
|
|
y = e.pageY() - off.top;
|
|
|
if (!liberal && e.target() != lineSpace.parentNode && !(e.target() == wrapper && y > (lines.length * lineHeight())))
|
|
|
for (var n = e.target(); n != lineDiv && n != cursor; n = n.parentNode)
|
|
|
if (!n || n == wrapper) return null;
|
|
|
var line = showingFrom + Math.floor(y / lineHeight());
|
|
|
return clipPos({line: line, ch: charFromX(clipLine(line), x)});
|
|
|
}
|
|
|
function onContextMenu(e) {
|
|
|
var pos = posFromMouse(e);
|
|
|
if (!pos || window.opera) return; // Opera is difficult.
|
|
|
if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
|
|
|
setCursor(pos.line, pos.ch);
|
|
|
|
|
|
var oldCSS = input.style.cssText;
|
|
|
input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.pageY() - 1) +
|
|
|
"px; left: " + (e.pageX() - 1) + "px; z-index: 1000; background: white; " +
|
|
|
"border-width: 0; outline: none; overflow: hidden;";
|
|
|
var val = input.value = getSelection();
|
|
|
input.focus();
|
|
|
setSelRange(input, 0, val.length);
|
|
|
if (gecko) e.stop();
|
|
|
leaveInputAlone = true;
|
|
|
setTimeout(function() {
|
|
|
if (input.value != val) operation(replaceSelection)(input.value, "end");
|
|
|
input.style.cssText = oldCSS;
|
|
|
leaveInputAlone = false;
|
|
|
prepareInput();
|
|
|
slowPoll();
|
|
|
}, 50);
|
|
|
}
|
|
|
|
|
|
// Cursor-blinking
|
|
|
function restartBlink() {
|
|
|
clearInterval(blinker);
|
|
|
var on = true;
|
|
|
cursor.style.visibility = "";
|
|
|
blinker = setInterval(function() {
|
|
|
cursor.style.visibility = (on = !on) ? "" : "hidden";
|
|
|
}, 650);
|
|
|
}
|
|
|
|
|
|
var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
|
|
|
function matchBrackets(autoclear) {
|
|
|
var head = sel.inverted ? sel.from : sel.to, line = lines[head.line], pos = head.ch - 1;
|
|
|
var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
|
|
|
if (!match) return;
|
|
|
var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
|
|
|
for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
|
|
|
if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
|
|
|
|
|
|
var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
|
|
|
function scan(line, from, to) {
|
|
|
if (!line.text) return;
|
|
|
var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
|
|
|
for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
|
|
|
var text = st[i];
|
|
|
if (st[i+1] != null && st[i+1] != style) {pos += d * text.length; continue;}
|
|
|
for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
|
|
|
if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
|
|
|
var match = matching[cur];
|
|
|
if (match.charAt(1) == ">" == forward) stack.push(cur);
|
|
|
else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
|
|
|
else if (!stack.length) return {pos: pos, match: true};
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
for (var i = head.line, e = forward ? Math.min(i + 50, lines.length) : Math.max(0, i - 50); i != e; i+=d) {
|
|
|
var line = lines[i], first = i == head.line;
|
|
|
var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
|
|
|
if (found) {
|
|
|
var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
|
|
|
var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
|
|
|
two = markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
|
|
|
var clear = operation(function(){one(); two();});
|
|
|
if (autoclear) setTimeout(clear, 800);
|
|
|
else bracketHighlighted = clear;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// Finds the line to start with when starting a parse. Tries to
|
|
|
// find a line with a stateAfter, so that it can start with a
|
|
|
// valid state. If that fails, it returns the line with the
|
|
|
// smallest indentation, which tends to need the least context to
|
|
|
// parse correctly.
|
|
|
function findStartLine(n) {
|
|
|
var minindent, minline;
|
|
|
for (var search = n, lim = n - 40; search > lim; --search) {
|
|
|
if (search == 0) return 0;
|
|
|
var line = lines[search-1];
|
|
|
if (line.stateAfter) return search;
|
|
|
var indented = line.indentation();
|
|
|
if (minline == null || minindent > indented) {
|
|
|
minline = search;
|
|
|
minindent = indented;
|
|
|
}
|
|
|
}
|
|
|
return minline;
|
|
|
}
|
|
|
function getStateBefore(n) {
|
|
|
var start = findStartLine(n), state = start && lines[start-1].stateAfter;
|
|
|
if (!state) state = startState(mode);
|
|
|
else state = copyState(mode, state);
|
|
|
for (var i = start; i < n; ++i) {
|
|
|
var line = lines[i];
|
|
|
line.highlight(mode, state);
|
|
|
line.stateAfter = copyState(mode, state);
|
|
|
}
|
|
|
if (!lines[n].stateAfter) work.push(n);
|
|
|
return state;
|
|
|
}
|
|
|
function highlightWorker() {
|
|
|
var end = +new Date + options.workTime;
|
|
|
while (work.length) {
|
|
|
if (!lines[showingFrom].stateAfter) var task = showingFrom;
|
|
|
else var task = work.pop();
|
|
|
if (task >= lines.length) continue;
|
|
|
var start = findStartLine(task), state = start && lines[start-1].stateAfter;
|
|
|
if (state) state = copyState(mode, state);
|
|
|
else state = startState(mode);
|
|
|
|
|
|
for (var i = start, l = lines.length; i < l; ++i) {
|
|
|
var line = lines[i], hadState = line.stateAfter;
|
|
|
if (+new Date > end) {
|
|
|
work.push(i);
|
|
|
startWorker(options.workDelay);
|
|
|
changes.push({from: task, to: i});
|
|
|
return;
|
|
|
}
|
|
|
var changed = line.highlight(mode, state);
|
|
|
line.stateAfter = copyState(mode, state);
|
|
|
if (hadState && !changed && line.text) break;
|
|
|
}
|
|
|
changes.push({from: task, to: i});
|
|
|
}
|
|
|
}
|
|
|
function startWorker(time) {
|
|
|
if (!work.length) return;
|
|
|
highlight.set(time, operation(highlightWorker));
|
|
|
}
|
|
|
|
|
|
// 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.
|
|
|
function startOperation() {
|
|
|
updateInput = null; changes = []; textChanged = selectionChanged = false;
|
|
|
}
|
|
|
function endOperation() {
|
|
|
var reScroll = false;
|
|
|
if (selectionChanged) reScroll = !scrollCursorIntoView();
|
|
|
if (changes.length) updateDisplay(changes);
|
|
|
else if (selectionChanged) updateCursor();
|
|
|
if (reScroll) scrollCursorIntoView();
|
|
|
if (selectionChanged) restartBlink();
|
|
|
|
|
|
// updateInput can be set to a boolean value to force/prevent an
|
|
|
// update.
|
|
|
if (!leaveInputAlone && (updateInput === true || (updateInput !== false && selectionChanged)))
|
|
|
prepareInput();
|
|
|
|
|
|
if (selectionChanged && options.onCursorActivity)
|
|
|
options.onCursorActivity(instance);
|
|
|
if (textChanged && options.onChange)
|
|
|
options.onChange(instance);
|
|
|
if (selectionChanged && options.matchBrackets)
|
|
|
setTimeout(operation(function() {
|
|
|
if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
|
|
|
matchBrackets(false);
|
|
|
}), 20);
|
|
|
}
|
|
|
var nestedOperation = 0;
|
|
|
function operation(f) {
|
|
|
return function() {
|
|
|
if (!nestedOperation++) startOperation();
|
|
|
try {var result = f.apply(this, arguments);}
|
|
|
finally {if (!--nestedOperation) endOperation();}
|
|
|
return result;
|
|
|
};
|
|
|
}
|
|
|
|
|
|
function SearchCursor(query, pos, caseFold) {
|
|
|
this.atOccurrence = false;
|
|
|
if (caseFold == null) caseFold = typeof query == "string" && query == query.toLowerCase();
|
|
|
|
|
|
if (pos && typeof pos == "object") pos = clipPos(pos);
|
|
|
else pos = {line: 0, ch: 0};
|
|
|
this.pos = {from: pos, to: pos};
|
|
|
|
|
|
// The matches method is filled in based on the type of query.
|
|
|
// It takes a position and a direction, and returns an object
|
|
|
// describing the next occurrence of the query, or null if no
|
|
|
// more matches were found.
|
|
|
if (typeof query != "string") // Regexp match
|
|
|
this.matches = function(reverse, pos) {
|
|
|
if (reverse) {
|
|
|
var line = lines[pos.line].text.slice(0, pos.ch), match = line.match(query), start = 0;
|
|
|
while (match) {
|
|
|
var ind = line.indexOf(match[0]);
|
|
|
start += ind;
|
|
|
line = line.slice(ind + 1);
|
|
|
var newmatch = line.match(query);
|
|
|
if (newmatch) match = newmatch;
|
|
|
else break;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
var line = lines[pos.line].text.slice(pos.ch), match = line.match(query),
|
|
|
start = match && pos.ch + line.indexOf(match[0]);
|
|
|
}
|
|
|
if (match)
|
|
|
return {from: {line: pos.line, ch: start},
|
|
|
to: {line: pos.line, ch: start + match[0].length},
|
|
|
match: match};
|
|
|
};
|
|
|
else { // String query
|
|
|
if (caseFold) query = query.toLowerCase();
|
|
|
var fold = caseFold ? function(str){return str.toLowerCase();} : function(str){return str;};
|
|
|
var target = query.split("\n");
|
|
|
// Different methods for single-line and multi-line queries
|
|
|
if (target.length == 1)
|
|
|
this.matches = function(reverse, pos) {
|
|
|
var line = fold(lines[pos.line].text), len = query.length, match;
|
|
|
if (reverse ? (pos.ch >= len && (match = line.lastIndexOf(query, pos.ch - len)) != -1)
|
|
|
: (match = line.indexOf(query, pos.ch)) != -1)
|
|
|
return {from: {line: pos.line, ch: match},
|
|
|
to: {line: pos.line, ch: match + len}};
|
|
|
};
|
|
|
else
|
|
|
this.matches = function(reverse, pos) {
|
|
|
var ln = pos.line, idx = (reverse ? target.length - 1 : 0), match = target[idx], line = fold(lines[ln].text);
|
|
|
var offsetA = (reverse ? line.indexOf(match) + match.length : line.lastIndexOf(match));
|
|
|
if (reverse ? offsetA >= pos.ch || offsetA != match.length
|
|
|
: offsetA <= pos.ch || offsetA != line.length - match.length)
|
|
|
return;
|
|
|
for (;;) {
|
|
|
if (reverse ? !ln : ln == lines.length - 1) return;
|
|
|
line = fold(lines[ln += reverse ? -1 : 1].text);
|
|
|
match = target[reverse ? --idx : ++idx];
|
|
|
if (idx > 0 && idx < target.length - 1) {
|
|
|
if (line != match) return;
|
|
|
else continue;
|
|
|
}
|
|
|
var offsetB = (reverse ? line.lastIndexOf(match) : line.indexOf(match) + match.length);
|
|
|
if (reverse ? offsetB != line.length - match.length : offsetB != match.length)
|
|
|
return;
|
|
|
var start = {line: pos.line, ch: offsetA}, end = {line: ln, ch: offsetB};
|
|
|
return {from: reverse ? end : start, to: reverse ? start : end};
|
|
|
}
|
|
|
};
|
|
|
}
|
|
|
}
|
|
|
|
|
|
SearchCursor.prototype = {
|
|
|
findNext: function() {return this.find(false);},
|
|
|
findPrevious: function() {return this.find(true);},
|
|
|
|
|
|
find: function(reverse) {
|
|
|
var self = this, pos = clipPos(reverse ? this.pos.from : this.pos.to);
|
|
|
function savePosAndFail(line) {
|
|
|
var pos = {line: line, ch: 0};
|
|
|
self.pos = {from: pos, to: pos};
|
|
|
self.atOccurrence = false;
|
|
|
return false;
|
|
|
}
|
|
|
|
|
|
for (;;) {
|
|
|
if (this.pos = this.matches(reverse, pos)) {
|
|
|
this.atOccurrence = true;
|
|
|
return this.pos.match || true;
|
|
|
}
|
|
|
if (reverse) {
|
|
|
if (!pos.line) return savePosAndFail(0);
|
|
|
pos = {line: pos.line-1, ch: lines[pos.line-1].text.length};
|
|
|
}
|
|
|
else {
|
|
|
if (pos.line == lines.length - 1) return savePosAndFail(lines.length);
|
|
|
pos = {line: pos.line+1, ch: 0};
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
|
|
|
from: function() {if (this.atOccurrence) return copyPos(this.pos.from);},
|
|
|
to: function() {if (this.atOccurrence) return copyPos(this.pos.to);}
|
|
|
};
|
|
|
|
|
|
return instance;
|
|
|
} // (end of function CodeMirror)
|
|
|
|
|
|
// The default configuration options.
|
|
|
CodeMirror.defaults = {
|
|
|
value: "",
|
|
|
mode: null,
|
|
|
indentUnit: 2,
|
|
|
indentWithTabs: false,
|
|
|
tabMode: "classic",
|
|
|
enterMode: "indent",
|
|
|
electricChars: true,
|
|
|
onKeyEvent: null,
|
|
|
lineNumbers: false,
|
|
|
gutter: false,
|
|
|
firstLineNumber: 1,
|
|
|
readOnly: false,
|
|
|
onChange: null,
|
|
|
onCursorActivity: null,
|
|
|
onGutterClick: null,
|
|
|
onFocus: null, onBlur: null, onScroll: null,
|
|
|
matchBrackets: false,
|
|
|
workTime: 100,
|
|
|
workDelay: 200,
|
|
|
undoDepth: 40,
|
|
|
tabindex: null
|
|
|
};
|
|
|
|
|
|
// Known modes, by name and by MIME
|
|
|
var modes = {}, mimeModes = {};
|
|
|
CodeMirror.defineMode = function(name, mode) {
|
|
|
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
|
|
|
modes[name] = mode;
|
|
|
};
|
|
|
CodeMirror.defineMIME = function(mime, spec) {
|
|
|
mimeModes[mime] = spec;
|
|
|
};
|
|
|
CodeMirror.getMode = function(options, spec) {
|
|
|
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
|
|
|
spec = mimeModes[spec];
|
|
|
if (typeof spec == "string")
|
|
|
var mname = spec, config = {};
|
|
|
else
|
|
|
var mname = spec.name, config = spec;
|
|
|
var mfactory = modes[mname];
|
|
|
if (!mfactory) {
|
|
|
if (window.console) console.warn("No mode " + mname + " found, falling back to plain text.");
|
|
|
return CodeMirror.getMode(options, "text/plain");
|
|
|
}
|
|
|
return mfactory(options, config);
|
|
|
}
|
|
|
CodeMirror.listModes = function() {
|
|
|
var list = [];
|
|
|
for (var m in modes)
|
|
|
if (modes.propertyIsEnumerable(m)) list.push(m);
|
|
|
return list;
|
|
|
};
|
|
|
CodeMirror.listMIMEs = function() {
|
|
|
var list = [];
|
|
|
for (var m in mimeModes)
|
|
|
if (mimeModes.propertyIsEnumerable(m)) list.push(m);
|
|
|
return list;
|
|
|
};
|
|
|
|
|
|
CodeMirror.fromTextArea = function(textarea, options) {
|
|
|
if (!options) options = {};
|
|
|
options.value = textarea.value;
|
|
|
if (!options.tabindex && textarea.tabindex)
|
|
|
options.tabindex = textarea.tabindex;
|
|
|
|
|
|
function save() {textarea.value = instance.getValue();}
|
|
|
if (textarea.form) {
|
|
|
// Deplorable hack to make the submit method do the right thing.
|
|
|
var rmSubmit = connect(textarea.form, "submit", save, true);
|
|
|
if (typeof textarea.form.submit == "function") {
|
|
|
var realSubmit = textarea.form.submit;
|
|
|
function wrappedSubmit() {
|
|
|
save();
|
|
|
textarea.form.submit = realSubmit;
|
|
|
textarea.form.submit();
|
|
|
textarea.form.submit = wrappedSubmit;
|
|
|
}
|
|
|
textarea.form.submit = wrappedSubmit;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
textarea.style.display = "none";
|
|
|
var instance = CodeMirror(function(node) {
|
|
|
textarea.parentNode.insertBefore(node, textarea.nextSibling);
|
|
|
}, options);
|
|
|
instance.save = save;
|
|
|
instance.toTextArea = function() {
|
|
|
save();
|
|
|
textarea.parentNode.removeChild(instance.getWrapperElement());
|
|
|
textarea.style.display = "";
|
|
|
if (textarea.form) {
|
|
|
rmSubmit();
|
|
|
if (typeof textarea.form.submit == "function")
|
|
|
textarea.form.submit = realSubmit;
|
|
|
}
|
|
|
};
|
|
|
return instance;
|
|
|
};
|
|
|
|
|
|
// 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;
|
|
|
}
|
|
|
CodeMirror.startState = startState;
|
|
|
function startState(mode, a1, a2) {
|
|
|
return mode.startState ? mode.startState(a1, a2) : true;
|
|
|
}
|
|
|
CodeMirror.copyState = copyState;
|
|
|
|
|
|
// The character stream used by a mode's parser.
|
|
|
function StringStream(string) {
|
|
|
this.pos = this.start = 0;
|
|
|
this.string = string;
|
|
|
}
|
|
|
StringStream.prototype = {
|
|
|
eol: function() {return this.pos >= this.string.length;},
|
|
|
sol: function() {return this.pos == 0;},
|
|
|
peek: function() {return this.string.charAt(this.pos);},
|
|
|
next: function() {
|
|
|
if (this.pos < this.string.length)
|
|
|
return this.string.charAt(this.pos++);
|
|
|
},
|
|
|
eat: function(match) {
|
|
|
var ch = this.string.charAt(this.pos);
|
|
|
if (typeof match == "string") var ok = ch == match;
|
|
|
else var ok = ch && (match.test ? match.test(ch) : match(ch));
|
|
|
if (ok) {++this.pos; return ch;}
|
|
|
},
|
|
|
eatWhile: function(match) {
|
|
|
var start = this.start;
|
|
|
while (this.eat(match)){}
|
|
|
return this.pos > start;
|
|
|
},
|
|
|
eatSpace: function() {
|
|
|
var start = this.pos;
|
|
|
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
|
|
|
return this.pos > start;
|
|
|
},
|
|
|
skipToEnd: function() {this.pos = this.string.length;},
|
|
|
skipTo: function(ch) {
|
|
|
var found = this.string.indexOf(ch, this.pos);
|
|
|
if (found > -1) {this.pos = found; return true;}
|
|
|
},
|
|
|
backUp: function(n) {this.pos -= n;},
|
|
|
column: function() {return countColumn(this.string, this.start);},
|
|
|
indentation: function() {return countColumn(this.string);},
|
|
|
match: function(pattern, consume, caseInsensitive) {
|
|
|
if (typeof pattern == "string") {
|
|
|
function cased(str) {return caseInsensitive ? str.toLowerCase() : str;}
|
|
|
if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
|
|
|
if (consume !== false) this.pos += pattern.length;
|
|
|
return true;
|
|
|
}
|
|
|
}
|
|
|
else {
|
|
|
var match = this.string.slice(this.pos).match(pattern);
|
|
|
if (match && consume !== false) this.pos += match[0].length;
|
|
|
return match;
|
|
|
}
|
|
|
},
|
|
|
current: function(){return this.string.slice(this.start, this.pos);}
|
|
|
};
|
|
|
|
|
|
// Line objects. These hold state related to a line, including
|
|
|
// highlighting info (the styles array).
|
|
|
function Line(text, styles) {
|
|
|
this.styles = styles || [text, null];
|
|
|
this.stateAfter = null;
|
|
|
this.text = text;
|
|
|
this.marked = this.gutterMarker = this.className = null;
|
|
|
}
|
|
|
Line.prototype = {
|
|
|
// Replace a piece of a line, keeping the styles around it intact.
|
|
|
replace: function(from, to, text) {
|
|
|
var st = [], mk = this.marked;
|
|
|
copyStyles(0, from, this.styles, st);
|
|
|
if (text) st.push(text, null);
|
|
|
copyStyles(to, this.text.length, this.styles, st);
|
|
|
this.styles = st;
|
|
|
this.text = this.text.slice(0, from) + text + this.text.slice(to);
|
|
|
this.stateAfter = null;
|
|
|
if (mk) {
|
|
|
var diff = text.length - (to - from), end = this.text.length;
|
|
|
function fix(n) {return n <= Math.min(to, to + diff) ? n : n + diff;}
|
|
|
for (var i = 0; i < mk.length; ++i) {
|
|
|
var mark = mk[i], del = false;
|
|
|
if (mark.from >= end) del = true;
|
|
|
else {mark.from = fix(mark.from); if (mark.to != null) mark.to = fix(mark.to);}
|
|
|
if (del || mark.from >= mark.to) {mk.splice(i, 1); i--;}
|
|
|
}
|
|
|
}
|
|
|
},
|
|
|
// Split a line in two, again keeping styles intact.
|
|
|
split: function(pos, textBefore) {
|
|
|
var st = [textBefore, null];
|
|
|
copyStyles(pos, this.text.length, this.styles, st);
|
|
|
return new Line(textBefore + this.text.slice(pos), st);
|
|
|
},
|
|
|
addMark: function(from, to, style) {
|
|
|
var mk = this.marked, mark = {from: from, to: to, style: style};
|
|
|
if (this.marked == null) this.marked = [];
|
|
|
this.marked.push(mark);
|
|
|
this.marked.sort(function(a, b){return a.from - b.from;});
|
|
|
return mark;
|
|
|
},
|
|
|
removeMark: function(mark) {
|
|
|
var mk = this.marked;
|
|
|
if (!mk) return;
|
|
|
for (var i = 0; i < mk.length; ++i)
|
|
|
if (mk[i] == mark) {mk.splice(i, 1); break;}
|
|
|
},
|
|
|
// Run the given mode's parser over a line, update the styles
|
|
|
// array, which contains alternating fragments of text and CSS
|
|
|
// classes.
|
|
|
highlight: function(mode, state) {
|
|
|
var stream = new StringStream(this.text), st = this.styles, pos = 0, changed = false;
|
|
|
while (!stream.eol()) {
|
|
|
var style = mode.token(stream, state);
|
|
|
var substr = this.text.slice(stream.start, stream.pos);
|
|
|
stream.start = stream.pos;
|
|
|
if (pos && st[pos-1] == style)
|
|
|
st[pos-2] += substr;
|
|
|
else if (substr) {
|
|
|
if (!changed && st[pos] != substr || st[pos+1] != style) changed = true;
|
|
|
st[pos++] = substr; st[pos++] = style;
|
|
|
}
|
|
|
// Give up when line is ridiculously long
|
|
|
if (stream.pos > 5000) {
|
|
|
st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
|
|
|
break;
|
|
|
}
|
|
|
}
|
|
|
if (st.length != pos) {st.length = pos; changed = true;}
|
|
|
return changed;
|
|
|
},
|
|
|
// Fetch the parser token for a given character. Useful for hacks
|
|
|
// that want to inspect the mode state (say, for completion).
|
|
|
getTokenAt: function(mode, state, ch) {
|
|
|
var txt = this.text, stream = new StringStream(txt);
|
|
|
while (stream.pos < ch && !stream.eol()) {
|
|
|
stream.start = stream.pos;
|
|
|
var style = mode.token(stream, state);
|
|
|
}
|
|
|
return {start: stream.start,
|
|
|
end: stream.pos,
|
|
|
string: stream.current(),
|
|
|
className: style || null,
|
|
|
state: state};
|
|
|
},
|
|
|
indentation: function() {return countColumn(this.text);},
|
|
|
// Produces an HTML fragment for the line, taking selection,
|
|
|
// marking, and highlighting into account.
|
|
|
getHTML: function(sfrom, sto, includePre) {
|
|
|
var html = [];
|
|
|
if (includePre)
|
|
|
html.push(this.className ? '<pre class="' + this.className + '">': "<pre>");
|
|
|
function span(text, style) {
|
|
|
if (!text) return;
|
|
|
if (style) html.push('<span class="', style, '">', htmlEscape(text), "</span>");
|
|
|
else html.push(htmlEscape(text));
|
|
|
}
|
|
|
var st = this.styles, allText = this.text, marked = this.marked;
|
|
|
if (sfrom == sto) sfrom = null;
|
|
|
|
|
|
if (!allText)
|
|
|
span(" ", sfrom != null && sto == null ? "CodeMirror-selected" : null);
|
|
|
else if (!marked && sfrom == null)
|
|
|
for (var i = 0, e = st.length; i < e; i+=2) span(st[i], st[i+1]);
|
|
|
else {
|
|
|
var pos = 0, i = 0, text = "", style, sg = 0;
|
|
|
var markpos = -1, mark = null;
|
|
|
function nextMark() {
|
|
|
if (marked) {
|
|
|
markpos += 1;
|
|
|
mark = (markpos < marked.length) ? marked[markpos] : null;
|
|
|
}
|
|
|
}
|
|
|
nextMark();
|
|
|
while (pos < allText.length) {
|
|
|
var upto = allText.length;
|
|
|
var extraStyle = "";
|
|
|
if (sfrom != null) {
|
|
|
if (sfrom > pos) upto = sfrom;
|
|
|
else if (sto == null || sto > pos) {
|
|
|
extraStyle = " CodeMirror-selected";
|
|
|
if (sto != null) upto = Math.min(upto, sto);
|
|
|
}
|
|
|
}
|
|
|
while (mark && mark.to != null && mark.to <= pos) nextMark();
|
|
|
if (mark) {
|
|
|
if (mark.from > pos) upto = Math.min(upto, mark.from);
|
|
|
else {
|
|
|
extraStyle += " " + mark.style;
|
|
|
if (mark.to != null) upto = Math.min(upto, mark.to);
|
|
|
}
|
|
|
}
|
|
|
for (;;) {
|
|
|
var end = pos + text.length;
|
|
|
var apliedStyle = style;
|
|
|
if (extraStyle) apliedStyle = style ? style + extraStyle : extraStyle;
|
|
|
span(end > upto ? text.slice(0, upto - pos) : text, apliedStyle);
|
|
|
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
|
|
|
pos = end;
|
|
|
text = st[i++]; style = st[i++];
|
|
|
}
|
|
|
}
|
|
|
if (sfrom != null && sto == null) span(" ", "CodeMirror-selected");
|
|
|
}
|
|
|
if (includePre) html.push("</pre>");
|
|
|
return html.join("");
|
|
|
}
|
|
|
};
|
|
|
// Utility used by replace and split above
|
|
|
function copyStyles(from, to, source, dest) {
|
|
|
for (var i = 0, pos = 0, state = 0; pos < to; i+=2) {
|
|
|
var part = source[i], end = pos + part.length;
|
|
|
if (state == 0) {
|
|
|
if (end > from) dest.push(part.slice(from - pos, Math.min(part.length, to - pos)), source[i+1]);
|
|
|
if (end >= from) state = 1;
|
|
|
}
|
|
|
else if (state == 1) {
|
|
|
if (end > to) dest.push(part.slice(0, to - pos), source[i+1]);
|
|
|
else dest.push(part, source[i+1]);
|
|
|
}
|
|
|
pos = end;
|
|
|
}
|
|
|
}
|
|
|
|
|
|
// The history object 'chunks' changes that are made close together
|
|
|
// and at almost the same time into bigger undoable units.
|
|
|
function History() {
|
|
|
this.time = 0;
|
|
|
this.done = []; this.undone = [];
|
|
|
}
|
|
|
History.prototype = {
|
|
|
addChange: function(start, added, old) {
|
|
|
this.undone.length = 0;
|
|
|
var time = +new Date, last = this.done[this.done.length - 1];
|
|
|
if (time - this.time > 400 || !last ||
|
|
|
last.start > start + added || last.start + last.added < start - last.added + last.old.length)
|
|
|
this.done.push({start: start, added: added, old: old});
|
|
|
else {
|
|
|
var oldoff = 0;
|
|
|
if (start < last.start) {
|
|
|
for (var i = last.start - start - 1; i >= 0; --i)
|
|
|
last.old.unshift(old[i]);
|
|
|
last.added += last.start - start;
|
|
|
last.start = start;
|
|
|
}
|
|
|
else if (last.start < start) {
|
|
|
oldoff = start - last.start;
|
|
|
added += oldoff;
|
|
|
}
|
|
|
for (var i = last.added - oldoff, e = old.length; i < e; ++i)
|
|
|
last.old.push(old[i]);
|
|
|
if (last.added < added) last.added = added;
|
|
|
}
|
|
|
this.time = time;
|
|
|
}
|
|
|
};
|
|
|
|
|
|
// Event stopping compatibility wrapper.
|
|
|
function stopEvent() {
|
|
|
if (this.preventDefault) {this.preventDefault(); this.stopPropagation();}
|
|
|
else {this.returnValue = false; this.cancelBubble = true;}
|
|
|
}
|
|
|
// Ensure an event has a stop method.
|
|
|
function addStop(event) {
|
|
|
if (!event.stop) event.stop = stopEvent;
|
|
|
return event;
|
|
|
}
|
|
|
|
|
|
// Event wrapper, exposing the few operations we need.
|
|
|
function Event(orig) {this.e = orig;}
|
|
|
Event.prototype = {
|
|
|
stop: function() {stopEvent.call(this.e);},
|
|
|
target: function() {return this.e.target || this.e.srcElement;},
|
|
|
button: function() {
|
|
|
if (this.e.which) return this.e.which;
|
|
|
else if (this.e.button & 1) return 1;
|
|
|
else if (this.e.button & 2) return 3;
|
|
|
else if (this.e.button & 4) return 2;
|
|
|
},
|
|
|
pageX: function() {
|
|
|
if (this.e.pageX != null) return this.e.pageX;
|
|
|
else return this.e.clientX + document.body.scrollLeft + document.documentElement.scrollLeft;
|
|
|
},
|
|
|
pageY: function() {
|
|
|
if (this.e.pageY != null) return this.e.pageY;
|
|
|
else return this.e.clientY + document.body.scrollTop + document.documentElement.scrollTop;
|
|
|
}
|
|
|
};
|
|
|
|
|
|
// Event handler registration. If disconnect is true, it'll return a
|
|
|
// function that unregisters the handler.
|
|
|
function connect(node, type, handler, disconnect) {
|
|
|
function wrapHandler(event) {handler(new Event(event || window.event));}
|
|
|
if (typeof node.addEventListener == "function") {
|
|
|
node.addEventListener(type, wrapHandler, false);
|
|
|
if (disconnect) return function() {node.removeEventListener(type, wrapHandler, false);};
|
|
|
}
|
|
|
else {
|
|
|
node.attachEvent("on" + type, wrapHandler);
|
|
|
if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
|
|
|
}
|
|
|
}
|
|
|
|
|
|
function Delayed() {this.id = null;}
|
|
|
Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
|
|
|
|
|
|
// Some IE versions don't preserve whitespace when setting the
|
|
|
// innerHTML of a PRE tag.
|
|
|
var badInnerHTML = (function() {
|
|
|
var pre = document.createElement("pre");
|
|
|
pre.innerHTML = " "; return !pre.innerHTML;
|
|
|
})();
|
|
|
|
|
|
var gecko = /gecko\/\d{7}/i.test(navigator.userAgent);
|
|
|
|
|
|
var lineSep = "\n";
|
|
|
// Feature-detect whether newlines in textareas are converted to \r\n
|
|
|
(function () {
|
|
|
var te = document.createElement("textarea");
|
|
|
te.value = "foo\nbar";
|
|
|
if (te.value.indexOf("\r") > -1) lineSep = "\r\n";
|
|
|
}());
|
|
|
|
|
|
var tabSize = 8;
|
|
|
var mac = /Mac/.test(navigator.platform);
|
|
|
var movementKeys = {};
|
|
|
for (var i = 35; i <= 40; ++i)
|
|
|
movementKeys[i] = movementKeys["c" + i] = true;
|
|
|
|
|
|
// Counts the column offset in a string, taking tabs into account.
|
|
|
// Used mostly to find indentation.
|
|
|
function countColumn(string, end) {
|
|
|
if (end == null) {
|
|
|
end = string.search(/[^\s\u00a0]/);
|
|
|
if (end == -1) end = string.length;
|
|
|
}
|
|
|
for (var i = 0, n = 0; i < end; ++i) {
|
|
|
if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
|
|
|
else ++n;
|
|
|
}
|
|
|
return n;
|
|
|
}
|
|
|
|
|
|
// Find the position of an element by following the offsetParent chain.
|
|
|
function eltOffset(node) {
|
|
|
var x = 0, y = 0, n2 = node;
|
|
|
for (var n = node; n; n = n.offsetParent) {x += n.offsetLeft; y += n.offsetTop;}
|
|
|
for (var n = node; n != document.body; n = n.parentNode) {x -= n.scrollLeft; y -= n.scrollTop;}
|
|
|
return {left: x, top: y};
|
|
|
}
|
|
|
// Get a node's text content.
|
|
|
function eltText(node) {
|
|
|
return node.textContent || node.innerText || node.nodeValue || "";
|
|
|
}
|
|
|
|
|
|
// Operations on {line, ch} objects.
|
|
|
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 {line: x.line, ch: x.ch};}
|
|
|
|
|
|
function htmlEscape(str) {
|
|
|
return str.replace(/[<&]/g, function(str) {return str == "&" ? "&" : "<";});
|
|
|
}
|
|
|
|
|
|
// Used to position the cursor after an undo/redo by finding the
|
|
|
// last edited character.
|
|
|
function editEnd(from, to) {
|
|
|
if (!to) return from ? from.length : 0;
|
|
|
if (!from) return to.length;
|
|
|
for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
|
|
|
if (from.charAt(i) != to.charAt(j)) break;
|
|
|
return j + 1;
|
|
|
}
|
|
|
|
|
|
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;
|
|
|
}
|
|
|
|
|
|
// See if "".split is the broken IE version, if so, provide an
|
|
|
// alternative way to split lines.
|
|
|
if ("\n\nb".split(/\n/).length != 3)
|
|
|
var splitLines = function(string) {
|
|
|
var pos = 0, nl, result = [];
|
|
|
while ((nl = string.indexOf("\n", pos)) > -1) {
|
|
|
result.push(string.slice(pos, string.charAt(nl-1) == "\r" ? nl - 1 : nl));
|
|
|
pos = nl + 1;
|
|
|
}
|
|
|
result.push(string.slice(pos));
|
|
|
return result;
|
|
|
};
|
|
|
else
|
|
|
var splitLines = function(string){return string.split(/\r?\n/);};
|
|
|
|
|
|
// Sane model of finding and setting the selection in a textarea
|
|
|
if (window.getSelection) {
|
|
|
var selRange = function(te) {
|
|
|
try {return {start: te.selectionStart, end: te.selectionEnd};}
|
|
|
catch(e) {return null;}
|
|
|
};
|
|
|
var setSelRange = function(te, start, end) {
|
|
|
try {te.setSelectionRange(start, end);}
|
|
|
catch(e) {} // Fails on Firefox when textarea isn't part of the document
|
|
|
};
|
|
|
}
|
|
|
// IE model. Don't ask.
|
|
|
else {
|
|
|
var selRange = function(te) {
|
|
|
try {var range = document.selection.createRange();}
|
|
|
catch(e) {return null;}
|
|
|
if (!range || range.parentElement() != te) return null;
|
|
|
var val = te.value, len = val.length, localRange = te.createTextRange();
|
|
|
localRange.moveToBookmark(range.getBookmark());
|
|
|
var endRange = te.createTextRange();
|
|
|
endRange.collapse(false);
|
|
|
|
|
|
if (localRange.compareEndPoints("StartToEnd", endRange) > -1)
|
|
|
return {start: len, end: len};
|
|
|
|
|
|
var start = -localRange.moveStart("character", -len);
|
|
|
for (var i = val.indexOf("\r"); i > -1 && i < start; i = val.indexOf("\r", i+1), start++) {}
|
|
|
|
|
|
if (localRange.compareEndPoints("EndToEnd", endRange) > -1)
|
|
|
return {start: start, end: len};
|
|
|
|
|
|
var end = -localRange.moveEnd("character", -len);
|
|
|
for (var i = val.indexOf("\r"); i > -1 && i < end; i = val.indexOf("\r", i+1), end++) {}
|
|
|
return {start: start, end: end};
|
|
|
};
|
|
|
var setSelRange = function(te, start, end) {
|
|
|
var range = te.createTextRange();
|
|
|
range.collapse(true);
|
|
|
var endrange = range.duplicate();
|
|
|
var newlines = 0, txt = te.value;
|
|
|
for (var pos = txt.indexOf("\n"); pos > -1 && pos < start; pos = txt.indexOf("\n", pos + 1))
|
|
|
++newlines;
|
|
|
range.move("character", start - newlines);
|
|
|
for (; pos > -1 && pos < end; pos = txt.indexOf("\n", pos + 1))
|
|
|
++newlines;
|
|
|
endrange.move("character", end - newlines);
|
|
|
range.setEndPoint("EndToEnd", endrange);
|
|
|
range.select();
|
|
|
};
|
|
|
}
|
|
|
|
|
|
CodeMirror.defineMode("null", function() {
|
|
|
return {token: function(stream) {stream.skipToEnd();}};
|
|
|
});
|
|
|
CodeMirror.defineMIME("text/plain", "null");
|
|
|
|
|
|
return CodeMirror;
|
|
|
})();
|
|
|
|
