1
// CodeMirror is the only global var we claim
2
window.CodeMirror = (function() {
7
// Crude, but necessary to handle a number of hard-to-feature-detect
8
// bugs and behavior differences.
9
var gecko = /gecko\/\d{7}/i.test(navigator.userAgent);
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var ie = /MSIE \d/.test(navigator.userAgent);
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var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
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var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
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var ie_lt10 = /MSIE [1-9]\b/.test(navigator.userAgent);
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var webkit = /WebKit\//.test(navigator.userAgent);
15
var chrome = /Chrome\//.test(navigator.userAgent);
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var opera = /Opera\//.test(navigator.userAgent);
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var safari = /Apple Computer/.test(navigator.vendor);
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var khtml = /KHTML\//.test(navigator.userAgent);
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var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
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var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
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var phantom = /PhantomJS/.test(navigator.userAgent);
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var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
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var mac = ios || /Mac/.test(navigator.platform);
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var win = /Win/.test(navigator.platform);
27
// Optimize some code when these features are not used
28
var sawReadOnlySpans = false, sawCollapsedSpans = false;
32
function CodeMirror(place, options) {
33
if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
35
this.options = options = options || {};
36
// Determine effective options based on given values and defaults.
37
for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
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options[opt] = defaults[opt];
39
setGuttersForLineNumbers(options);
41
var display = this.display = makeDisplay(place);
42
display.wrapper.CodeMirror = this;
44
if (options.autofocus) focusInput(this);
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var doc = new BranchChunk([new LeafChunk([makeLine("", null, textHeight(display))])]);
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// The selection. These are always maintained to point at valid
48
// positions. Inverted is used to remember that the user is
49
// selecting bottom-to-top.
52
// frontier is the point up to which the content has been parsed,
53
frontier: 0, highlight: new Delayed(),
54
sel: {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false, shift: false},
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scrollTop: 0, scrollLeft: 0,
56
overwrite: false, focused: false,
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// Tracks the maximum line length so that
58
// the horizontal scrollbar can be kept
59
// static when scrolling.
60
maxLine: getLine(doc, 0),
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maxLineChanged: false,
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// Initialize the content.
70
this.setValue(options.value || "");
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// Override magic textarea content restore that IE sometimes does
72
// on our hidden textarea on reload
73
if (ie) setTimeout(bind(resetInput, this, true), 20);
74
this.view.history = makeHistory();
76
registerEventHandlers(this);
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// IE throws unspecified error in certain cases, when
78
// trying to access activeElement before onload
79
var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
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if (hasFocus || options.autofocus) setTimeout(bind(onFocus, this), 20);
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operation(this, function() {
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for (var opt in optionHandlers)
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if (optionHandlers.propertyIsEnumerable(opt))
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optionHandlers[opt](this, options[opt], Init);
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for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
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// DISPLAY CONSTRUCTOR
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function makeDisplay(place) {
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var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none;");
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input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
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// Wraps and hides input textarea
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d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
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// The actual fake scrollbars.
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d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
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d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
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d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
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// DIVs containing the selection and the actual code
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d.lineDiv = elt("div");
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d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
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// Blinky cursor, and element used to ensure cursor fits at the end of a line
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d.cursor = elt("pre", "\u00a0", "CodeMirror-cursor");
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// Secondary cursor, shown when on a 'jump' in bi-directional text
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d.otherCursor = elt("pre", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
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// Used to measure text size
111
d.measure = elt("div", null, "CodeMirror-measure");
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// Wraps everything that needs to exist inside the vertically-padded coordinate system
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d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
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null, "position: relative; outline: none");
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// Moved around its parent to cover visible view
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d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
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d.gutters = elt("div", null, "CodeMirror-gutters");
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// Set to the height of the text, causes scrolling
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d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
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// D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
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d.heightForcer = elt("div", "\u00a0", null, "position: absolute; height: " + scrollerCutOff + "px");
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// Provides scrolling
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d.scroller = elt("div", [d.sizer, d.heightForcer], "CodeMirror-scroll");
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d.scroller.setAttribute("tabIndex", "-1");
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// The element in which the editor lives.
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d.wrapper = elt("div", [d.gutters, d.inputDiv, d.scrollbarH, d.scrollbarV,
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d.scrollbarFiller, d.scroller], "CodeMirror");
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// Work around IE7 z-index bug
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if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
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if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);
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// Needed to hide big blue blinking cursor on Mobile Safari
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if (ios) input.style.width = "0px";
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if (!webkit) d.scroller.draggable = true;
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// Needed to handle Tab key in KHTML
137
if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
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// Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
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else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";
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// Current visible range (may be bigger than the view window).
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d.viewOffset = d.showingFrom = d.showingTo = d.lastSizeC = 0;
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// Used to only resize the line number gutter when necessary (when
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// the amount of lines crosses a boundary that makes its width change)
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d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
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// See readInput and resetInput
149
// Set to true when a non-horizontal-scrolling widget is added. As
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// an optimization, widget aligning is skipped when d is false.
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d.alignWidgets = false;
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// Flag that indicates whether we currently expect input to appear
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// (after some event like 'keypress' or 'input') and are polling
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d.pollingFast = false;
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// Self-resetting timeout for the poller
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d.poll = new Delayed();
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// True when a drag from the editor is active
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d.draggingText = false;
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d.cachedCharWidth = d.cachedTextHeight = null;
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d.measureLineCache = [];
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d.measureLineCache.pos = 0;
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// Tracks when resetInput has punted to just putting a short
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// string instead of the (large) selection.
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d.inaccurateSelection = false;
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// Used to adjust overwrite behaviour when a paste has been
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d.pasteIncoming = false;
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// Used to get the editor into a consistent state again when options change.
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function loadMode(cm) {
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var doc = cm.view.doc;
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cm.view.mode = CodeMirror.getMode(cm.options, cm.options.mode);
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doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
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cm.view.frontier = 0;
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startWorker(cm, 100);
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function wrappingChanged(cm) {
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var doc = cm.view.doc, th = textHeight(cm.display);
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if (cm.options.lineWrapping) {
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cm.display.wrapper.className += " CodeMirror-wrap";
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var perLine = cm.display.scroller.clientWidth / charWidth(cm.display) - 3;
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doc.iter(0, doc.size, function(line) {
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if (line.height == 0) return;
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var guess = Math.ceil(line.text.length / perLine) || 1;
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if (guess != 1) updateLineHeight(line, guess * th);
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cm.display.sizer.style.minWidth = "";
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cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
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computeMaxLength(cm.view);
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doc.iter(0, doc.size, function(line) {
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if (line.height != 0) updateLineHeight(line, th);
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regChange(cm, 0, doc.size);
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function keyMapChanged(cm) {
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var style = keyMap[cm.options.keyMap].style;
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cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
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(style ? " cm-keymap-" + style : "");
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function themeChanged(cm) {
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cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
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cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
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function guttersChanged(cm) {
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updateDisplay(cm, true);
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function updateGutters(cm) {
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var gutters = cm.display.gutters, specs = cm.options.gutters;
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removeChildren(gutters);
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for (var i = 0; i < specs.length; ++i) {
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var gutterClass = specs[i];
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var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
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if (gutterClass == "CodeMirror-linenumbers") {
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cm.display.lineGutter = gElt;
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gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
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gutters.style.display = i ? "" : "none";
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function lineLength(doc, line) {
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if (line.height == 0) return 0;
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var len = line.text.length, merged, cur = line;
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while (merged = collapsedSpanAtStart(cur)) {
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var found = merged.find();
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cur = getLine(doc, found.from.line);
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len += found.from.ch - found.to.ch;
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while (merged = collapsedSpanAtEnd(cur)) {
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var found = merged.find();
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len -= cur.text.length - found.from.ch;
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cur = getLine(doc, found.to.line);
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len += cur.text.length - found.to.ch;
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function computeMaxLength(view) {
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view.maxLine = getLine(view.doc, 0);
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view.maxLineLength = lineLength(view.doc, view.maxLine);
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view.maxLineChanged = true;
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view.doc.iter(1, view.doc.size, function(line) {
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var len = lineLength(view.doc, line);
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if (len > view.maxLineLength) {
264
view.maxLineLength = len;
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// Make sure the gutters options contains the element
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// "CodeMirror-linenumbers" when the lineNumbers option is true.
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function setGuttersForLineNumbers(options) {
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for (var i = 0; i < options.gutters.length; ++i) {
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if (options.gutters[i] == "CodeMirror-linenumbers") {
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if (options.lineNumbers) found = true;
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else options.gutters.splice(i--, 1);
280
if (!found && options.lineNumbers)
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options.gutters.push("CodeMirror-linenumbers");
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// Re-synchronize the fake scrollbars with the actual size of the
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// content. Optionally force a scrollTop.
288
function updateScrollbars(d /* display */, docHeight, scrollTop) {
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d.sizer.style.minHeight = d.heightForcer.style.top = (docHeight + 2 * paddingTop(d)) + "px";
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var needsH = d.scroller.scrollWidth > d.scroller.clientWidth;
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var needsV = d.scroller.scrollHeight > d.scroller.clientHeight;
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d.scrollbarV.style.display = "block";
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d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
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d.scrollbarV.firstChild.style.height =
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(d.scroller.scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
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if (scrollTop != null) {
298
d.scrollbarV.scrollTop = d.scroller.scrollTop = scrollTop;
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// 'Nudge' the scrollbar to work around a Webkit bug where,
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// in some situations, we'd end up with a scrollbar that
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// reported its scrollTop (and looked) as expected, but
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// *behaved* as if it was still in a previous state (i.e.
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// couldn't scroll up, even though it appeared to be at the
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if (webkit) setTimeout(function() {
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if (d.scrollbarV.scrollTop != scrollTop) return;
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d.scrollbarV.scrollTop = scrollTop + (scrollTop ? -1 : 1);
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d.scrollbarV.scrollTop = scrollTop;
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} else d.scrollbarV.style.display = "";
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d.scrollbarH.style.display = "block";
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d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
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d.scrollbarH.firstChild.style.width =
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(d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
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} else d.scrollbarH.style.display = "";
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if (needsH && needsV) {
319
d.scrollbarFiller.style.display = "block";
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d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
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} else d.scrollbarFiller.style.display = "";
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if (mac_geLion && scrollbarWidth(d.measure) === 0)
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d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
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function visibleLines(display, doc, viewPort) {
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var top = display.scroller.scrollTop, height = display.wrapper.clientHeight;
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if (typeof viewPort == "number") top = viewPort;
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else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
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top = Math.floor(top - paddingTop(display));
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var bottom = Math.ceil(top + height);
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return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
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function alignVertically(display) {
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if (!display.alignWidgets && !display.gutters.firstChild) return;
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var l = compensateForHScroll(display) + "px";
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for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
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for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
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function maybeUpdateLineNumberWidth(cm) {
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if (!cm.options.lineNumbers) return false;
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var doc = cm.view.doc, last = lineNumberFor(cm.options, doc.size - 1), display = cm.display;
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if (last.length != display.lineNumChars) {
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var test = display.measure.appendChild(elt("div", [elt("div", last)],
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"CodeMirror-linenumber CodeMirror-gutter-elt"));
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var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
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display.lineGutter.style.width = "";
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display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
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display.lineNumWidth = display.lineNumInnerWidth + padding;
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display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
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display.lineGutter.style.width = display.lineNumWidth + "px";
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function lineNumberFor(options, i) {
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return String(options.lineNumberFormatter(i + options.firstLineNumber));
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function compensateForHScroll(display) {
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return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
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function updateDisplay(cm, changes, viewPort) {
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var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo;
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var updated = updateDisplayInner(cm, changes, viewPort);
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signalLater(cm, cm, "update", cm);
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if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
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signalLater(cm, cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
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updateScrollbars(cm.display, cm.view.doc.height, typeof viewPort == "number" ? viewPort : null);
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// Uses a set of changes plus the current scroll position to
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// determine which DOM updates have to be made, and makes the
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function updateDisplayInner(cm, changes, viewPort) {
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var display = cm.display, doc = cm.view.doc;
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if (!display.wrapper.clientWidth) {
391
display.showingFrom = display.showingTo = display.viewOffset = 0;
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// Compute the new visible window
396
// If scrollTop is specified, use that to determine which lines
397
// to render instead of the current scrollbar position.
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var visible = visibleLines(display, doc, viewPort);
399
// Bail out if the visible area is already rendered and nothing changed.
400
if (changes !== true && changes.length == 0 &&
401
visible.from > display.showingFrom && visible.to < display.showingTo)
404
if (changes && maybeUpdateLineNumberWidth(cm))
406
display.sizer.style.marginLeft = display.scrollbarH.style.left = display.gutters.offsetWidth + "px";
408
// When merged lines are present, the line that needs to be
409
// redrawn might not be the one that was changed.
410
if (changes !== true && sawCollapsedSpans)
411
for (var i = 0; i < changes.length; ++i) {
412
var ch = changes[i], merged;
413
while (merged = collapsedSpanAtStart(getLine(doc, ch.from))) {
414
var from = merged.find().from.line;
415
if (ch.diff) ch.diff -= ch.from - from;
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// Used to determine which lines need their line numbers updated
421
var positionsChangedFrom = changes === true ? 0 : Infinity;
422
if (cm.options.lineNumbers && changes && changes !== true)
423
for (var i = 0; i < changes.length; ++i)
424
if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; }
426
var from = Math.max(visible.from - cm.options.viewportMargin, 0);
427
var to = Math.min(doc.size, visible.to + cm.options.viewportMargin);
428
if (display.showingFrom < from && from - display.showingFrom < 20) from = display.showingFrom;
429
if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(doc.size, display.showingTo);
431
// Create a range of theoretically intact lines, and punch holes
432
// in that using the change info.
433
var intact = changes === true ? [] :
434
computeIntact([{from: display.showingFrom, to: display.showingTo, domStart: 0}], changes);
435
// Clip off the parts that won't be visible
437
for (var i = 0; i < intact.length; ++i) {
438
var range = intact[i];
439
if (range.from < from) {range.domStart += (from - range.from); range.from = from;}
440
if (range.to > to) range.to = to;
441
if (range.from >= range.to) intact.splice(i--, 1);
442
else intactLines += range.to - range.from;
444
if (intactLines == to - from && from == display.showingFrom && to == display.showingTo)
446
intact.sort(function(a, b) {return a.domStart - b.domStart;});
448
if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
449
patchDisplay(cm, from, to, intact, positionsChangedFrom);
450
display.lineDiv.style.display = "";
452
var different = from != display.showingFrom || to != display.showingTo ||
453
display.lastSizeC != display.wrapper.clientHeight;
454
// This is just a bogus formula that detects when the editor is
455
// resized or the font size changes.
456
if (different) display.lastSizeC = display.wrapper.clientHeight;
457
display.showingFrom = from; display.showingTo = to;
458
display.viewOffset = heightAtLine(cm, getLine(doc, from));
459
startWorker(cm, 100);
461
// Since this is all rather error prone, it is honoured with the
462
// only assertion in the whole file.
463
if (display.lineDiv.childNodes.length != display.showingTo - display.showingFrom)
464
throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (display.showingTo - display.showingFrom) +
465
" nodes=" + display.lineDiv.childNodes.length);
467
// Update line heights for visible lines based on actual DOM
469
var curNode = display.lineDiv.firstChild, relativeTo = curNode.offsetTop;
470
doc.iter(display.showingFrom, display.showingTo, function(line) {
471
// Work around bizarro IE7 bug where, sometimes, our curNode
472
// is magically replaced with a new node in the DOM, leaving
473
// us with a reference to an orphan (nextSibling-less) node.
474
if (!curNode) return;
475
if (!lineIsHidden(line)) {
476
var end = curNode.offsetHeight + curNode.offsetTop;
477
var height = end - relativeTo, diff = line.height - height;
478
if (height < 2) height = textHeight(display);
480
if (diff > .001 || diff < -.001)
481
updateLineHeight(line, height);
483
curNode = curNode.nextSibling;
486
// Position the mover div to align with the current virtual scroll position
487
display.mover.style.top = display.viewOffset + "px";
491
function computeIntact(intact, changes) {
492
for (var i = 0, l = changes.length || 0; i < l; ++i) {
493
var change = changes[i], intact2 = [], diff = change.diff || 0;
494
for (var j = 0, l2 = intact.length; j < l2; ++j) {
495
var range = intact[j];
496
if (change.to <= range.from && change.diff)
497
intact2.push({from: range.from + diff, to: range.to + diff,
498
domStart: range.domStart});
499
else if (change.to <= range.from || change.from >= range.to)
502
if (change.from > range.from)
503
intact2.push({from: range.from, to: change.from, domStart: range.domStart});
504
if (change.to < range.to)
505
intact2.push({from: change.to + diff, to: range.to + diff,
506
domStart: range.domStart + (change.to - range.from)});
514
function getDimensions(cm) {
515
var d = cm.display, left = {}, width = {};
516
for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
517
left[cm.options.gutters[i]] = n.offsetLeft;
518
width[cm.options.gutters[i]] = n.offsetWidth;
520
return {fixedPos: compensateForHScroll(d),
521
gutterTotalWidth: d.gutters.offsetWidth,
524
wrapperWidth: d.wrapper.clientWidth};
527
function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
528
function killNode(node) {
529
var tmp = node.nextSibling;
530
node.parentNode.removeChild(node);
533
var dims = getDimensions(cm);
534
var display = cm.display, lineNumbers = cm.options.lineNumbers;
535
// The first pass removes the DOM nodes that aren't intact.
536
if (!intact.length) {
537
// old IE does bad things to nodes when .innerHTML = "" is used on a parent
538
// we still need widgets and markers intact to add back to the new content later
539
if (ie_lt10) for (var ld = display.lineDiv, tmp = ld.firstChild; tmp; tmp = ld.firstChild) ld.removeChild(tmp);
540
else removeChildren(display.lineDiv);
542
var domPos = 0, curNode = display.lineDiv.firstChild, n;
543
for (var i = 0; i < intact.length; ++i) {
545
while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}
546
for (var j = cur.from, e = cur.to; j < e; ++j) {
547
if (lineNumbers && updateNumbersFrom <= j && curNode.firstChild)
548
setTextContent(curNode.firstChild.firstChild, lineNumberFor(cm.options, j));
549
curNode = curNode.nextSibling; domPos++;
552
while (curNode) curNode = killNode(curNode);
554
// This pass fills in the lines that actually changed.
555
var nextIntact = intact.shift(), curNode = display.lineDiv.firstChild;
558
cm.view.doc.iter(from, to, function(line) {
559
if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
560
if (!nextIntact || nextIntact.from > j)
561
display.lineDiv.insertBefore(buildLineElement(cm, line, j, dims), curNode);
563
curNode = curNode.nextSibling;
568
function buildLineElement(cm, line, lineNo, dims) {
569
if (line.height == 0) return elt("div");
571
var lineElement = line.height == 0 ? elt("div") : lineContent(cm, line);
572
var markers = line.gutterMarkers, display = cm.display;
574
if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass &&
575
(!line.widgets || !line.widgets.length)) return lineElement;
577
// Lines with gutter elements or a background class need
578
// to be wrapped again, and have the extra elements added
579
// to the wrapper div
581
var wrap = elt("div", null, line.wrapClass, "position: relative");
582
if (cm.options.lineNumbers || markers) {
583
var gutterWrap = wrap.appendChild(elt("div", null, null, "position: absolute; left: " +
584
dims.fixedPos + "px"));
585
wrap.alignable = [gutterWrap];
586
if (cm.options.lineNumbers)
587
gutterWrap.appendChild(elt("div", lineNumberFor(cm.options, lineNo),
588
"CodeMirror-linenumber CodeMirror-gutter-elt",
589
"left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
590
+ display.lineNumInnerWidth + "px"));
592
for (var k = 0; k < cm.options.gutters.length; ++k) {
593
var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
595
gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
596
dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
600
// Kludge to make sure the styled element lies behind the selection (by z-index)
602
wrap.appendChild(elt("div", "\u00a0", line.bgClass + " CodeMirror-linebackground"));
603
wrap.appendChild(lineElement);
605
for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
606
var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
607
node.widget = widget;
608
if (widget.noHScroll) {
609
(wrap.alignable || (wrap.alignable = [])).push(node);
610
var width = dims.wrapperWidth;
611
node.style.left = dims.fixedPos + "px";
612
if (!widget.coverGutter) {
613
width -= dims.gutterTotalWidth;
614
node.style.paddingLeft = dims.gutterTotalWidth + "px";
616
node.style.width = width + "px";
618
if (widget.coverGutter) {
619
node.style.zIndex = 5;
620
node.style.position = "relative";
621
if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
624
wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
626
wrap.appendChild(node);
629
if (ie_lt8) wrap.style.zIndex = 2;
633
// SELECTION / CURSOR
635
function selHead(view) {
636
return view.sel.inverted ? view.sel.from : view.sel.to;
639
function updateSelection(cm) {
640
var headPos = posEq(cm.view.sel.from, cm.view.sel.to) ?
641
updateSelectionCursor(cm) :
642
updateSelectionRange(cm);
643
var display = cm.display;
644
// Move the hidden textarea near the cursor to prevent scrolling artifacts
645
var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
646
display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
647
headPos.top + lineOff.top - wrapOff.top)) + "px";
648
display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
649
headPos.left + lineOff.left - wrapOff.left)) + "px";
652
// No selection, plain cursor
653
function updateSelectionCursor(cm) {
654
var display = cm.display, pos = cursorCoords(cm, cm.view.sel.from, "div");
655
display.cursor.style.left = pos.left + "px";
656
display.cursor.style.top = pos.top + "px";
657
display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
658
display.cursor.style.display = "";
659
display.selectionDiv.style.display = "none";
662
display.otherCursor.style.display = "";
663
display.otherCursor.style.left = pos.other.left + "px";
664
display.otherCursor.style.top = pos.other.top + "px";
665
display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
666
} else { display.otherCursor.style.display = "none"; }
670
// Highlight selection
671
function updateSelectionRange(cm) {
672
var display = cm.display, doc = cm.view.doc, sel = cm.view.sel;
673
var fragment = document.createDocumentFragment();
674
var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);
676
function add(left, top, width, bottom) {
677
if (top < 0) top = 0;
678
fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
679
"px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) +
680
"px; height: " + (bottom - top) + "px"));
683
function drawForLine(line, fromArg, toArg, retTop) {
684
var lineObj = getLine(doc, line);
685
var lineLen = lineObj.text.length, rVal = retTop ? Infinity : -Infinity;
686
function coords(ch) {
687
return charCoords(cm, {line: line, ch: ch}, "div", lineObj);
690
iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
691
var leftPos = coords(dir == "rtl" ? to - 1 : from);
692
var rightPos = coords(dir == "rtl" ? from : to - 1);
693
var left = leftPos.left, right = rightPos.right;
694
if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
695
add(left, leftPos.top, null, leftPos.bottom);
697
if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
699
if (toArg == null && to == lineLen) right = clientWidth;
700
if (fromArg == null && from == 0) left = pl;
701
rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal);
702
if (left < pl + 1) left = pl;
703
add(left, rightPos.top, right - left, rightPos.bottom);
708
if (sel.from.line == sel.to.line) {
709
drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
711
var fromObj = getLine(doc, sel.from.line);
712
var cur = fromObj, merged, path = [sel.from.line, sel.from.ch], singleLine;
713
while (merged = collapsedSpanAtEnd(cur)) {
714
var found = merged.find();
715
path.push(found.from.ch, found.to.line, found.to.ch);
716
if (found.to.line == sel.to.line) {
717
path.push(sel.to.ch);
721
cur = getLine(doc, found.to.line);
724
// This is a single, merged line
726
for (var i = 0; i < path.length; i += 3)
727
drawForLine(path[i], path[i+1], path[i+2]);
729
var middleTop, middleBot, toObj = getLine(doc, sel.to.line);
731
// Draw the first line of selection.
732
middleTop = drawForLine(sel.from.line, sel.from.ch, null, false);
734
// Simply include it in the middle block.
735
middleTop = heightAtLine(cm, fromObj) - display.viewOffset;
738
middleBot = heightAtLine(cm, toObj) - display.viewOffset;
740
middleBot = drawForLine(sel.to.line, collapsedSpanAtStart(toObj) ? null : 0, sel.to.ch, true);
742
if (middleTop < middleBot) add(pl, middleTop, null, middleBot);
746
removeChildrenAndAdd(display.selectionDiv, fragment);
747
display.cursor.style.display = display.otherCursor.style.display = "none";
748
display.selectionDiv.style.display = "";
749
return cursorCoords(cm, selHead(cm.view), "div");
753
function restartBlink(cm) {
754
var display = cm.display;
755
clearInterval(display.blinker);
757
display.cursor.style.visibility = display.otherCursor.style.visibility = "";
758
display.blinker = setInterval(function() {
759
display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
760
}, cm.options.cursorBlinkRate);
765
function startWorker(cm, time) {
766
if (cm.view.frontier < cm.display.showingTo)
767
cm.view.highlight.set(time, bind(highlightWorker, cm));
770
function highlightWorker(cm) {
771
var view = cm.view, doc = view.doc;
772
if (view.frontier >= cm.display.showingTo) return;
773
var end = +new Date + cm.options.workTime;
774
var state = copyState(view.mode, getStateBefore(cm, view.frontier));
775
var changed = [], prevChange;
776
doc.iter(view.frontier, Math.min(doc.size, cm.display.showingTo + 500), function(line) {
777
if (view.frontier >= cm.display.showingFrom) { // Visible
778
if (highlightLine(cm, line, state) && view.frontier >= cm.display.showingFrom) {
779
if (prevChange && prevChange.end == view.frontier) prevChange.end++;
780
else changed.push(prevChange = {start: view.frontier, end: view.frontier + 1});
782
line.stateAfter = copyState(view.mode, state);
784
processLine(cm, line, state);
785
line.stateAfter = view.frontier % 5 == 0 ? copyState(view.mode, state) : null;
788
if (+new Date > end) {
789
startWorker(cm, cm.options.workDelay);
794
operation(cm, function() {
795
for (var i = 0; i < changed.length; ++i)
796
regChange(this, changed[i].start, changed[i].end);
800
// Finds the line to start with when starting a parse. Tries to
801
// find a line with a stateAfter, so that it can start with a
802
// valid state. If that fails, it returns the line with the
803
// smallest indentation, which tends to need the least context to
805
function findStartLine(cm, n) {
806
var minindent, minline, doc = cm.view.doc;
807
for (var search = n, lim = n - 100; search > lim; --search) {
808
if (search == 0) return 0;
809
var line = getLine(doc, search-1);
810
if (line.stateAfter) return search;
811
var indented = countColumn(line.text, null, cm.options.tabSize);
812
if (minline == null || minindent > indented) {
813
minline = search - 1;
814
minindent = indented;
820
function getStateBefore(cm, n) {
822
var pos = findStartLine(cm, n), state = pos && getLine(view.doc, pos-1).stateAfter;
823
if (!state) state = startState(view.mode);
824
else state = copyState(view.mode, state);
825
view.doc.iter(pos, n, function(line) {
826
processLine(cm, line, state);
827
var save = pos == n - 1 || pos % 5 == 0 || pos >= view.showingFrom && pos < view.showingTo;
828
line.stateAfter = save ? copyState(view.mode, state) : null;
834
// POSITION MEASUREMENT
836
function paddingTop(display) {return display.lineSpace.offsetTop;}
837
function paddingLeft(display) {
838
var e = removeChildrenAndAdd(display.measure, elt("pre")).appendChild(elt("span", "x"));
842
function measureChar(cm, line, ch, data) {
843
var data = data || measureLine(cm, line);
844
var dir = -1, len = line.text.length;
845
for (var pos = ch;; pos += dir) {
848
if (dir < 0 && pos == 0) dir = 1;
850
return {left: pos < ch ? r.right : r.left,
851
right: pos > ch ? r.left : r.right,
852
top: r.top, bottom: r.bottom};
855
function measureLine(cm, line) {
856
// First look in the cache
857
var display = cm.display, cache = cm.display.measureLineCache;
858
for (var i = 0; i < cache.length; ++i) {
860
if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
861
display.scroller.clientWidth == memo.width)
865
var measure = measureLineInner(cm, line);
866
// Store result in the cache
867
var memo = {text: line.text, width: display.scroller.clientWidth,
868
markedSpans: line.markedSpans, measure: measure};
869
if (cache.length == 16) cache[++cache.pos % 16] = memo;
870
else cache.push(memo);
874
function measureLineInner(cm, line) {
875
var display = cm.display, measure = emptyArray(line.text.length);
876
var pre = lineContent(cm, line, measure);
877
removeChildrenAndAdd(display.measure, pre);
879
var outer = display.lineDiv.getBoundingClientRect();
880
var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
881
for (var i = 0, elt; i < measure.length; ++i) if (elt = measure[i]) {
882
var size = measure[i].getBoundingClientRect();
883
var top = Math.max(0, size.top - outer.top), bot = Math.min(size.bottom - outer.top, maxBot);
884
for (var j = 0; j < vranges.length; j += 2) {
885
var rtop = vranges[j], rbot = vranges[j+1];
886
if (rtop > bot || rbot < top) continue;
887
if (rtop <= top && rbot >= bot ||
888
top <= rtop && bot >= rbot ||
889
Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
890
vranges[j] = Math.min(top, rtop);
891
vranges[j+1] = Math.max(bot, rbot);
895
if (j == vranges.length) vranges.push(top, bot);
896
data[i] = {left: size.left - outer.left, right: size.right - outer.left, top: j};
898
for (var i = 0, elt; i < data.length; ++i) if (elt = data[i]) {
900
elt.top = vranges[vr]; elt.bottom = vranges[vr+1];
905
// Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page"
906
function intoCoordSystem(cm, lineObj, pos, rect, context) {
907
if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
908
var size = lineObj.widgets[i].node.offsetHeight;
909
rect.top += size; rect.bottom += size;
911
if (context == "line") return rect;
912
if (!context) context = "local";
913
var yOff = heightAtLine(cm, lineObj);
914
if (context != "local") yOff -= cm.display.viewOffset;
915
if (context == "page") {
916
var lOff = cm.display.lineSpace.getBoundingClientRect();
917
yOff += lOff.top + (window.pageYOffset || (document.documentElement || document.body).scrollTop);
918
var xOff = lOff.left + (window.pageXOffset || (document.documentElement || document.body).scrollLeft);
919
rect.left += xOff; rect.right += xOff;
921
rect.top += yOff; rect.bottom += yOff;
925
function charCoords(cm, pos, context, lineObj) {
926
if (!lineObj) lineObj = getLine(cm.view.doc, pos.line);
927
return intoCoordSystem(cm, lineObj, pos, measureChar(cm, lineObj, pos.ch), context);
930
function cursorCoords(cm, pos, context, lineObj, measurement) {
931
lineObj = lineObj || getLine(cm.view.doc, pos.line);
932
if (!measurement) measurement = measureLine(cm, lineObj);
933
function get(ch, right) {
934
var m = measureChar(cm, lineObj, ch, measurement);
935
if (right) m.left = m.right; else m.right = m.left;
936
return intoCoordSystem(cm, lineObj, pos, m, context);
938
var order = getOrder(lineObj), ch = pos.ch;
939
if (!order) return get(ch);
940
var main, other, linedir = order[0].level;
941
for (var i = 0; i < order.length; ++i) {
942
var part = order[i], rtl = part.level % 2, nb, here;
943
if (part.from < ch && part.to > ch) return get(ch, rtl);
944
var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to;
946
// Opera and IE return bogus offsets and widths for edges
947
// where the direction flips, but only for the side with the
948
// lower level. So we try to use the side with the higher
950
if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true);
951
else here = get(rtl && part.from != part.to ? ch - 1 : ch);
952
if (rtl == linedir) main = here; else other = here;
953
} else if (right == ch) {
954
var nb = i < order.length - 1 && order[i+1];
955
if (!rtl && nb && nb.from == nb.to) continue;
956
if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from);
957
else here = get(rtl ? ch : ch - 1, true);
958
if (rtl == linedir) main = here; else other = here;
961
if (linedir && !ch) other = get(order[0].to - 1);
962
if (!main) return other;
963
if (other) main.other = other;
967
// Coords must be lineSpace-local
968
function coordsChar(cm, x, y) {
969
var doc = cm.view.doc;
970
y += cm.display.viewOffset;
971
if (y < 0) return {line: 0, ch: 0, outside: true};
972
var lineNo = lineAtHeight(doc, y);
973
if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc, doc.size - 1).text.length};
977
var lineObj = getLine(doc, lineNo);
978
var found = coordsCharInner(cm, lineObj, lineNo, x, y);
979
var merged = collapsedSpanAtEnd(lineObj);
980
if (merged && found.ch == lineRight(lineObj))
981
lineNo = merged.find().to.line;
987
function coordsCharInner(cm, lineObj, lineNo, x, y) {
988
var doc = cm.view.doc;
989
var innerOff = y - heightAtLine(cm, lineObj);
990
var wrongLine = false, cWidth = cm.display.wrapper.clientWidth;
991
var measurement = measureLine(cm, lineObj);
994
var sp = cursorCoords(cm, {line: lineNo, ch: ch}, "line",
995
lineObj, measurement);
997
if (innerOff > sp.bottom) return Math.max(0, sp.left - cWidth);
998
else if (innerOff < sp.top) return sp.left + cWidth;
999
else wrongLine = false;
1003
var bidi = getOrder(lineObj), dist = lineObj.text.length;
1004
var from = lineLeft(lineObj), to = lineRight(lineObj), fromX = paddingLeft(cm.display), toX;
1006
// Guess a suitable upper bound for our search.
1007
var estimated = Math.min(to, Math.ceil((x + Math.floor(innerOff / textHeight(cm.display)) *
1008
cWidth * .9) / charWidth(cm.display)));
1010
var estX = getX(estimated);
1011
if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
1012
else {toX = estX; to = estimated; break;}
1014
// Try to guess a suitable lower bound as well.
1015
estimated = Math.floor(to * 0.8); estX = getX(estimated);
1016
if (estX < x) {from = estimated; fromX = estX;}
1018
} else toX = getX(to);
1019
if (x > toX) return {line: lineNo, ch: to, outside: wrongLine};
1020
// Do a binary search between these bounds.
1022
if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
1023
var after = x - fromX < toX - x, ch = after ? from : to;
1024
while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch;
1025
return {line: lineNo, ch: ch, after: after, outside: wrongLine};
1027
var step = Math.ceil(dist / 2), middle = from + step;
1030
for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
1032
var middleX = getX(middle);
1033
if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; dist -= step;}
1034
else {from = middle; fromX = middleX; dist = step;}
1039
function textHeight(display) {
1040
if (display.cachedTextHeight != null) return display.cachedTextHeight;
1041
if (measureText == null) {
1042
measureText = elt("pre");
1043
// Measure a bunch of lines, for browsers that compute
1044
// fractional heights.
1045
for (var i = 0; i < 49; ++i) {
1046
measureText.appendChild(document.createTextNode("x"));
1047
measureText.appendChild(elt("br"));
1049
measureText.appendChild(document.createTextNode("x"));
1051
removeChildrenAndAdd(display.measure, measureText);
1052
var height = measureText.offsetHeight / 50;
1053
if (height > 3) display.cachedTextHeight = height;
1054
removeChildren(display.measure);
1058
function charWidth(display) {
1059
if (display.cachedCharWidth != null) return display.cachedCharWidth;
1060
var anchor = elt("span", "x");
1061
var pre = elt("pre", [anchor]);
1062
removeChildrenAndAdd(display.measure, pre);
1063
var width = anchor.offsetWidth;
1064
if (width > 2) display.cachedCharWidth = width;
1070
// Operations are used to wrap changes in such a way that each
1071
// change won't have to update the cursor and display (which would
1072
// be awkward, slow, and error-prone), but instead updates are
1073
// batched and then all combined and executed at once.
1075
function startOperation(cm) {
1076
if (cm.curOp) ++cm.curOp.depth;
1078
// Nested operations delay update until the outermost one
1081
// An array of ranges of lines that have to be updated. See
1084
delayedCallbacks: [],
1086
userSelChange: null,
1088
selectionChanged: false,
1089
updateMaxLine: false
1093
function endOperation(cm) {
1095
if (--op.depth) return;
1097
var view = cm.view, display = cm.display;
1098
if (op.updateMaxLine) computeMaxLength(view);
1099
if (view.maxLineChanged && !cm.options.lineWrapping) {
1100
var width = measureChar(cm, view.maxLine, view.maxLine.text.length).right;
1101
display.sizer.style.minWidth = (width + 3 + scrollerCutOff) + "px";
1102
view.maxLineChanged = false;
1104
var newScrollPos, updated;
1105
if (op.selectionChanged) {
1106
var coords = cursorCoords(cm, selHead(view));
1107
newScrollPos = calculateScrollPos(display, coords.left, coords.top, coords.left, coords.bottom);
1109
if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null)
1110
updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop);
1111
if (!updated && op.selectionChanged) updateSelection(cm);
1112
if (newScrollPos) scrollCursorIntoView(cm);
1113
if (op.selectionChanged) restartBlink(cm);
1115
if (view.focused && op.updateInput)
1116
resetInput(cm, op.userSelChange);
1119
signal(cm, "change", cm, op.textChanged);
1120
if (op.selectionChanged) signal(cm, "cursorActivity", cm);
1121
for (var i = 0; i < op.delayedCallbacks.length; ++i) op.delayedCallbacks[i](cm);
1124
// Wraps a function in an operation. Returns the wrapped function.
1125
function operation(cm1, f) {
1127
var cm = cm1 || this;
1129
try {var result = f.apply(cm, arguments);}
1130
finally {endOperation(cm);}
1135
function regChange(cm, from, to, lendiff) {
1136
cm.curOp.changes.push({from: from, to: to, diff: lendiff});
1141
function slowPoll(cm) {
1142
if (cm.view.pollingFast) return;
1143
cm.display.poll.set(cm.options.pollInterval, function() {
1145
if (cm.view.focused) slowPoll(cm);
1149
function fastPoll(cm) {
1151
cm.display.pollingFast = true;
1153
var changed = readInput(cm);
1154
if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
1155
else {cm.display.pollingFast = false; slowPoll(cm);}
1157
cm.display.poll.set(20, p);
1160
// prevInput is a hack to work with IME. If we reset the textarea
1161
// on every change, that breaks IME. So we look for changes
1162
// compared to the previous content instead. (Modern browsers have
1163
// events that indicate IME taking place, but these are not widely
1164
// supported or compatible enough yet to rely on.)
1165
function readInput(cm) {
1166
var input = cm.display.input, prevInput = cm.display.prevInput, view = cm.view, sel = view.sel;
1167
if (!view.focused || hasSelection(input) || isReadOnly(cm)) return false;
1168
var text = input.value;
1169
if (text == prevInput && posEq(sel.from, sel.to)) return false;
1171
view.sel.shift = null;
1172
var same = 0, l = Math.min(prevInput.length, text.length);
1173
while (same < l && prevInput[same] == text[same]) ++same;
1174
if (same < prevInput.length)
1175
sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)};
1176
else if (view.overwrite && posEq(sel.from, sel.to) && !cm.display.pasteIncoming)
1177
sel.to = {line: sel.to.line, ch: Math.min(getLine(cm.view.doc, sel.to.line).text.length, sel.to.ch + (text.length - same))};
1178
var updateInput = cm.curOp.updateInput;
1179
cm.replaceSelection(text.slice(same), "end");
1180
cm.curOp.updateInput = updateInput;
1181
if (text.length > 1000) { input.value = cm.display.prevInput = ""; }
1182
else cm.display.prevInput = text;
1184
cm.display.pasteIncoming = false;
1188
function resetInput(cm, user) {
1189
var view = cm.view, minimal, selected;
1190
if (!posEq(view.sel.from, view.sel.to)) {
1191
cm.display.prevInput = "";
1192
minimal = hasCopyEvent &&
1193
(view.sel.to.line - view.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
1194
if (minimal) cm.display.input.value = "-";
1195
else cm.display.input.value = selected || cm.getSelection();
1196
if (view.focused) selectInput(cm.display.input);
1197
} else if (user) cm.display.prevInput = cm.display.input.value = "";
1198
cm.display.inaccurateSelection = minimal;
1201
function focusInput(cm) {
1202
if (cm.options.readOnly != "nocursor") cm.display.input.focus();
1205
function isReadOnly(cm) {
1206
return cm.options.readOnly || cm.view.cantEdit;
1211
function registerEventHandlers(cm) {
1213
on(d.scroller, "mousedown", operation(cm, onMouseDown));
1214
on(d.gutters, "mousedown", operation(cm, clickInGutter));
1215
on(d.scroller, "dblclick", operation(cm, e_preventDefault));
1216
on(d.lineSpace, "selectstart", function(e) {
1217
if (!mouseEventInWidget(d, e)) e_preventDefault(e);
1219
// Gecko browsers fire contextmenu *after* opening the menu, at
1220
// which point we can't mess with it anymore. Context menu is
1221
// handled in onMouseDown for Gecko.
1222
if (!gecko) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
1224
on(d.scroller, "scroll", function() {
1225
setScrollTop(cm, d.scroller.scrollTop);
1226
setScrollLeft(cm, d.scroller.scrollLeft);
1227
signal(cm, "scroll", cm);
1229
on(d.scrollbarV, "scroll", function() {
1230
setScrollTop(cm, d.scrollbarV.scrollTop);
1232
on(d.scrollbarH, "scroll", function() {
1233
setScrollLeft(cm, d.scrollbarH.scrollLeft);
1236
on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
1237
on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
1239
function reFocus() { if (cm.view.focused) setTimeout(bind(focusInput, cm), 0); }
1240
on(d.scrollbarH, "mousedown", reFocus);
1241
on(d.scrollbarV, "mousedown", reFocus);
1242
// Prevent wrapper from ever scrolling
1243
on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
1244
on(window, "resize", function resizeHandler() {
1245
// Might be a text scaling operation, clear size caches.
1246
d.cachedCharWidth = d.cachedTextHeight = null;
1247
d.measureLineCache.length = d.measureLineCache.pos = 0;
1248
if (d.wrapper.parentNode) updateDisplay(cm, true);
1249
else off(window, "resize", resizeHandler);
1252
on(d.input, "keyup", operation(cm, function(e) {
1253
if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
1254
if (e_prop(e, "keyCode") == 16) cm.view.sel.shift = null;
1256
on(d.input, "input", bind(fastPoll, cm));
1257
on(d.input, "keydown", operation(cm, onKeyDown));
1258
on(d.input, "keypress", operation(cm, onKeyPress));
1259
on(d.input, "focus", bind(onFocus, cm));
1260
on(d.input, "blur", bind(onBlur, cm));
1263
if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
1266
if (cm.options.dragDrop) {
1267
on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
1268
on(d.scroller, "dragenter", drag_);
1269
on(d.scroller, "dragover", drag_);
1270
on(d.scroller, "drop", operation(cm, onDrop));
1272
on(d.scroller, "paste", function(){focusInput(cm); fastPoll(cm);});
1273
on(d.input, "paste", function() {
1274
d.pasteIncoming = true;
1278
function prepareCopy() {
1279
if (d.inaccurateSelection) {
1281
d.inaccurateSelection = false;
1282
d.input.value = cm.getSelection();
1283
selectInput(d.input);
1286
on(d.input, "cut", prepareCopy);
1287
on(d.input, "copy", prepareCopy);
1289
// Needed to handle Tab key in KHTML
1290
if (khtml) on(d.sizer, "mouseup", function() {
1291
if (document.activeElement == d.input) d.input.blur();
1296
function mouseEventInWidget(display, e) {
1297
for (var n = e_target(e); n != display.wrapper; n = n.parentNode)
1298
if (/\bCodeMirror-(?:line)?widget\b/.test(n.className) ||
1299
n.parentNode == display.sizer && n != display.mover) return true;
1302
function posFromMouse(cm, e, liberal) {
1303
var display = cm.display;
1305
var target = e_target(e);
1306
if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
1307
target == display.scrollbarV || target == display.scrollbarV.firstChild ||
1308
target == display.scrollbarFiller) return null;
1310
var x, y, space = display.lineSpace.getBoundingClientRect();
1311
// Fails unpredictably on IE[67] when mouse is dragged around quickly.
1312
try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
1313
return coordsChar(cm, x - space.left, y - space.top);
1316
var lastClick, lastDoubleClick;
1317
function onMouseDown(e) {
1318
var cm = this, display = cm.display, view = cm.view, sel = view.sel, doc = view.doc;
1319
setShift(cm.view, e_prop(e, "shiftKey"));
1321
if (mouseEventInWidget(display, e)) {
1323
display.scroller.draggable = false;
1324
setTimeout(function(){display.scroller.draggable = true;}, 100);
1328
if (clickInGutter.call(cm, e)) return;
1329
var start = posFromMouse(cm, e);
1331
switch (e_button(e)) {
1333
if (gecko) onContextMenu.call(cm, cm, e);
1336
if (start) setSelectionUser(cm, start, start);
1337
setTimeout(bind(focusInput, cm), 20);
1338
e_preventDefault(e);
1341
// For button 1, if it was clicked inside the editor
1342
// (posFromMouse returning non-null), we have to adjust the
1344
if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}
1346
if (!view.focused) onFocus(cm);
1348
var now = +new Date, type = "single";
1349
if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
1351
e_preventDefault(e);
1352
setTimeout(bind(focusInput, cm), 20);
1353
selectLine(cm, start.line);
1354
} else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
1356
lastDoubleClick = {time: now, pos: start};
1357
e_preventDefault(e);
1358
var word = findWordAt(getLine(doc, start.line).text, start);
1359
setSelectionUser(cm, word.from, word.to);
1360
} else { lastClick = {time: now, pos: start}; }
1363
if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
1364
!posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
1365
var dragEnd = operation(cm, function(e2) {
1366
if (webkit) display.scroller.draggable = false;
1367
view.draggingText = false;
1368
off(document, "mouseup", dragEnd);
1369
off(display.scroller, "drop", dragEnd);
1370
if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
1371
e_preventDefault(e2);
1372
setSelectionUser(cm, start, start);
1376
// Let the drag handler handle this.
1377
if (webkit) display.scroller.draggable = true;
1378
view.draggingText = dragEnd;
1379
// IE's approach to draggable
1380
if (display.scroller.dragDrop) display.scroller.dragDrop();
1381
on(document, "mouseup", dragEnd);
1382
on(display.scroller, "drop", dragEnd);
1385
e_preventDefault(e);
1386
if (type == "single") setSelectionUser(cm, start, start);
1388
var startstart = sel.from, startend = sel.to;
1390
function doSelect(cur) {
1391
if (type == "single") {
1392
setSelectionUser(cm, start, cur);
1393
} else if (type == "double") {
1394
var word = findWordAt(getLine(doc, cur.line).text, cur);
1395
if (posLess(cur, startstart)) setSelectionUser(cm, word.from, startend);
1396
else setSelectionUser(cm, startstart, word.to);
1397
} else if (type == "triple") {
1398
if (posLess(cur, startstart)) setSelectionUser(cm, startend, clipPos(doc, {line: cur.line, ch: 0}));
1399
else setSelectionUser(cm, startstart, clipPos(doc, {line: cur.line + 1, ch: 0}));
1403
var editorSize = display.wrapper.getBoundingClientRect();
1404
// Used to ensure timeout re-tries don't fire when another extend
1405
// happened in the meantime (clearTimeout isn't reliable -- at
1406
// least on Chrome, the timeouts still happen even when cleared,
1407
// if the clear happens after their scheduled firing time).
1410
function extend(e) {
1411
var curCount = ++counter;
1412
var cur = posFromMouse(cm, e, true);
1414
if (!posEq(cur, last)) {
1415
if (!view.focused) onFocus(cm);
1418
var visible = visibleLines(display, doc);
1419
if (cur.line >= visible.to || cur.line < visible.from)
1420
setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
1422
var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
1423
if (outside) setTimeout(operation(cm, function() {
1424
if (counter != curCount) return;
1425
display.scroller.scrollTop += outside;
1433
var cur = posFromMouse(cm, e);
1434
if (cur) doSelect(cur);
1435
e_preventDefault(e);
1437
off(document, "mousemove", move);
1438
off(document, "mouseup", up);
1441
var move = operation(cm, function(e) {
1442
e_preventDefault(e);
1443
if (!ie && !e_button(e)) done(e);
1446
var up = operation(cm, done);
1447
on(document, "mousemove", move);
1448
on(document, "mouseup", up);
1451
function onDrop(e) {
1453
if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
1454
e_preventDefault(e);
1455
var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
1456
if (!pos || isReadOnly(cm)) return;
1457
if (files && files.length && window.FileReader && window.File) {
1458
var n = files.length, text = Array(n), read = 0;
1459
var loadFile = function(file, i) {
1460
var reader = new FileReader;
1461
reader.onload = function() {
1462
text[i] = reader.result;
1464
pos = clipPos(cm.view.doc, pos);
1465
operation(cm, function() {
1466
var end = replaceRange(cm, text.join(""), pos, pos);
1467
setSelectionUser(cm, pos, end);
1471
reader.readAsText(file);
1473
for (var i = 0; i < n; ++i) loadFile(files[i], i);
1475
// Don't do a replace if the drop happened inside of the selected text.
1476
if (cm.view.draggingText && !(posLess(pos, cm.view.sel.from) || posLess(cm.view.sel.to, pos))) {
1477
cm.view.draggingText(e);
1478
if (ie) setTimeout(bind(focusInput, cm), 50);
1482
var text = e.dataTransfer.getData("Text");
1484
compoundChange(cm, function() {
1485
var curFrom = cm.view.sel.from, curTo = cm.view.sel.to;
1486
setSelectionUser(cm, pos, pos);
1487
if (cm.view.draggingText) replaceRange(cm, "", curFrom, curTo);
1488
cm.replaceSelection(text);
1498
function clickInGutter(e) {
1499
var cm = this, display = cm.display;
1500
try { var mX = e.clientX, mY = e.clientY; }
1501
catch(e) { return false; }
1503
if (mX >= Math.floor(display.gutters.getBoundingClientRect().right)) return false;
1504
e_preventDefault(e);
1505
if (!hasHandler(cm, "gutterClick")) return true;
1507
var lineBox = display.lineDiv.getBoundingClientRect();
1508
if (mY > lineBox.bottom) return true;
1509
mY -= lineBox.top - display.viewOffset;
1511
for (var i = 0; i < cm.options.gutters.length; ++i) {
1512
var g = display.gutters.childNodes[i];
1513
if (g && g.getBoundingClientRect().right >= mX) {
1514
var line = lineAtHeight(cm.view.doc, mY);
1515
var gutter = cm.options.gutters[i];
1516
signalLater(cm, cm, "gutterClick", cm, line, gutter, e);
1523
function onDragStart(cm, e) {
1524
var txt = cm.getSelection();
1525
e.dataTransfer.setData("Text", txt);
1527
// Use dummy image instead of default browsers image.
1528
if (e.dataTransfer.setDragImage)
1529
e.dataTransfer.setDragImage(elt('img'), 0, 0);
1532
function setScrollTop(cm, val) {
1533
if (Math.abs(cm.view.scrollTop - val) < 2) return;
1534
cm.view.scrollTop = val;
1535
if (!gecko) updateDisplay(cm, [], val);
1536
if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
1537
if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
1538
if (gecko) updateDisplay(cm, []);
1540
function setScrollLeft(cm, val) {
1541
if (Math.abs(cm.view.scrollLeft - val) < 2) return;
1542
cm.view.scrollLeft = val;
1543
if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
1544
if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
1545
alignVertically(cm.display);
1548
// Since the delta values reported on mouse wheel events are
1549
// unstandardized between browsers and even browser versions, and
1550
// generally horribly unpredictable, this code starts by measuring
1551
// the scroll effect that the first few mouse wheel events have,
1552
// and, from that, detects the way it can convert deltas to pixel
1553
// offsets afterwards.
1555
// The reason we want to know the amount a wheel event will scroll
1556
// is that it gives us a chance to update the display before the
1557
// actual scrolling happens, reducing flickering.
1559
var wheelSamples = 0, wheelDX, wheelDY, wheelStartX, wheelStartY, wheelPixelsPerUnit = null;
1560
// Fill in a browser-detected starting value on browsers where we
1561
// know one. These don't have to be accurate -- the result of them
1562
// being wrong would just be a slight flicker on the first wheel
1563
// scroll (if it is large enough).
1564
if (ie) wheelPixelsPerUnit = -.53;
1565
else if (gecko) wheelPixelsPerUnit = 15;
1566
else if (chrome) wheelPixelsPerUnit = -.7;
1567
else if (safari) wheelPixelsPerUnit = -1/3;
1569
function onScrollWheel(cm, e) {
1570
var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
1571
if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
1572
if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
1573
else if (dy == null) dy = e.wheelDelta;
1575
var scroll = cm.display.scroller;
1576
if (wheelPixelsPerUnit != null) {
1577
var pixels = dy * wheelPixelsPerUnit;
1578
var top = cm.view.scrollTop, bot = top + cm.display.wrapper.clientHeight;
1579
if (pixels < 0) top = Math.max(0, top + pixels);
1580
else bot = Math.min(cm.view.doc.height, bot + pixels);
1581
updateDisplay(cm, [], {top: top, bottom: bot});
1583
if (wheelSamples < 20) {
1584
if (wheelStartX == null) {
1585
wheelStartX = scroll.scrollLeft; wheelStartY = scroll.scrollTop;
1586
wheelDX = dx; wheelDY = dy;
1587
setTimeout(function() {
1588
var movedX = scroll.scrollLeft - wheelStartX;
1589
var movedY = scroll.scrollTop - wheelStartY;
1590
var sample = (movedY && wheelDY && movedY / wheelDY) ||
1591
(movedX && wheelDX && movedX / wheelDX);
1592
wheelStartX = wheelStartY = null;
1593
if (!sample) return;
1594
wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
1598
wheelDX += dx; wheelDY += dy;
1603
function doHandleBinding(cm, bound, dropShift) {
1604
if (typeof bound == "string") {
1605
bound = commands[bound];
1606
if (!bound) return false;
1608
var view = cm.view, prevShift = view.sel.shift;
1610
if (isReadOnly(cm)) view.suppressEdits = true;
1611
if (dropShift) view.sel.shift = null;
1614
if (e != Pass) throw e;
1617
view.sel.shift = prevShift;
1618
view.suppressEdits = false;
1623
var maybeTransition;
1624
function handleKeyBinding(cm, e) {
1625
// Handle auto keymap transitions
1626
var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
1627
clearTimeout(maybeTransition);
1628
if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
1629
if (getKeyMap(cm.options.keyMap) == startMap)
1630
cm.options.keyMap = (next.call ? next.call(null, cm) : next);
1633
var name = keyNames[e_prop(e, "keyCode")], handled = false;
1634
var flipCtrlCmd = opera && mac;
1635
if (name == null || e.altGraphKey) return false;
1636
if (e_prop(e, "altKey")) name = "Alt-" + name;
1637
if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name;
1638
if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name;
1640
var stopped = false;
1641
function stop() { stopped = true; }
1643
if (e_prop(e, "shiftKey")) {
1644
handled = lookupKey("Shift-" + name, cm.options.extraKeys, cm.options.keyMap,
1645
function(b) {return doHandleBinding(cm, b, true);}, stop)
1646
|| lookupKey(name, cm.options.extraKeys, cm.options.keyMap, function(b) {
1647
if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(cm, b);
1650
handled = lookupKey(name, cm.options.extraKeys, cm.options.keyMap,
1651
function(b) { return doHandleBinding(cm, b); }, stop);
1653
if (stopped) handled = false;
1655
e_preventDefault(e);
1657
if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
1662
function handleCharBinding(cm, e, ch) {
1663
var handled = lookupKey("'" + ch + "'", cm.options.extraKeys, cm.options.keyMap,
1664
function(b) { return doHandleBinding(cm, b, true); });
1666
e_preventDefault(e);
1672
var lastStoppedKey = null;
1673
function onKeyDown(e) {
1675
if (!cm.view.focused) onFocus(cm);
1676
if (ie && e.keyCode == 27) { e.returnValue = false; }
1677
if (cm.display.pollingFast) { if (readInput(cm)) cm.display.pollingFast = false; }
1678
if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
1679
var code = e_prop(e, "keyCode");
1680
// IE does strange things with escape.
1681
setShift(cm.view, code == 16 || e_prop(e, "shiftKey"));
1682
// First give onKeyEvent option a chance to handle this.
1683
var handled = handleKeyBinding(cm, e);
1685
lastStoppedKey = handled ? code : null;
1686
// Opera has no cut event... we try to at least catch the key combo
1687
if (!handled && code == 88 && e_prop(e, mac ? "metaKey" : "ctrlKey"))
1688
cm.replaceSelection("");
1692
function onKeyPress(e) {
1694
if (cm.display.pollingFast) readInput(cm);
1695
if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
1696
var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
1697
if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
1698
if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
1699
var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
1700
if (this.options.electricChars && this.view.mode.electricChars &&
1701
this.options.smartIndent && !isReadOnly(this) &&
1702
this.view.mode.electricChars.indexOf(ch) > -1)
1703
setTimeout(operation(cm, function() {indentLine(cm, cm.view.sel.to.line, "smart");}), 75);
1704
if (handleCharBinding(cm, e, ch)) return;
1708
function onFocus(cm) {
1709
if (cm.options.readOnly == "nocursor") return;
1710
if (!cm.view.focused) {
1711
signal(cm, "focus", cm);
1712
cm.view.focused = true;
1713
if (cm.display.scroller.className.search(/\bCodeMirror-focused\b/) == -1)
1714
cm.display.scroller.className += " CodeMirror-focused";
1715
resetInput(cm, true);
1720
function onBlur(cm) {
1721
if (cm.view.focused) {
1722
signal(cm, "blur", cm);
1723
cm.view.focused = false;
1724
cm.display.scroller.className = cm.display.scroller.className.replace(" CodeMirror-focused", "");
1726
clearInterval(cm.display.blinker);
1727
setTimeout(function() {if (!cm.view.focused) cm.view.sel.shift = null;}, 150);
1730
var detectingSelectAll;
1731
function onContextMenu(cm, e) {
1732
var display = cm.display, sel = cm.view.sel;
1733
var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
1734
if (!pos || opera) return; // Opera is difficult.
1735
if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
1736
operation(cm, setSelection)(cm, pos, pos);
1738
var oldCSS = display.input.style.cssText;
1739
display.inputDiv.style.position = "absolute";
1740
display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
1741
"px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" +
1742
"border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
1744
resetInput(cm, true);
1745
// Adds "Select all" to context menu in FF
1746
if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";
1749
display.inputDiv.style.position = "relative";
1750
display.input.style.cssText = oldCSS;
1751
if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
1754
// Try to detect the user choosing select-all
1755
if (display.input.selectionStart != null) {
1756
clearTimeout(detectingSelectAll);
1757
var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value), i = 0;
1758
display.prevInput = " ";
1759
display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
1760
detectingSelectAll = setTimeout(function poll(){
1761
if (display.prevInput == " " && display.input.selectionStart == 0)
1762
operation(cm, commands.selectAll)(cm);
1763
else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
1764
else resetInput(cm);
1771
on(window, "mouseup", function mouseup() {
1772
off(window, "mouseup", mouseup);
1773
setTimeout(rehide, 20);
1776
setTimeout(rehide, 50);
1782
// Replace the range from from to to by the strings in newText.
1783
// Afterwards, set the selection to selFrom, selTo.
1784
function updateDoc(cm, from, to, newText, selUpdate) {
1785
// Possibly split or suppress the update based on the presence
1786
// of read-only spans in its range.
1787
var split = sawReadOnlySpans &&
1788
removeReadOnlyRanges(cm.view.doc, from, to);
1790
for (var i = split.length - 1; i >= 1; --i)
1791
updateDocInner(cm, split[i].from, split[i].to, [""]);
1793
return updateDocInner(cm, split[0].from, split[0].to, newText, selUpdate);
1795
return updateDocInner(cm, from, to, newText, selUpdate);
1799
function updateDocInner(cm, from, to, newText, selUpdate) {
1800
if (cm.view.suppressEdits) return;
1802
var view = cm.view, doc = view.doc, old = [];
1803
doc.iter(from.line, to.line + 1, function(line) {
1804
old.push(newHL(line.text, line.markedSpans));
1807
addChange(view.history, from.line, newText.length, old);
1808
while (view.history.done.length > cm.options.undoDepth) view.history.done.shift();
1810
var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);
1811
return updateDocNoUndo(cm, from, to, lines, selUpdate);
1814
function unredoHelper(cm, from, to, dir) {
1815
var doc = cm.view.doc, hist = cm.view.history;
1816
if (!from.length) return;
1817
var set = from.pop(), out = [];
1818
for (var i = set.length - 1; i >= 0; i -= 1) {
1819
hist.dirtyCounter += dir;
1820
var change = set[i];
1821
var replaced = [], end = change.start + change.added;
1822
doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); });
1823
out.push({start: change.start, added: change.old.length, old: replaced});
1824
var pos = {line: change.start + change.old.length - 1,
1825
ch: editEnd(hlText(lst(replaced)), hlText(lst(change.old)))};
1826
updateDocNoUndo(cm, {line: change.start, ch: 0}, {line: end - 1, ch: getLine(doc, end-1).text.length},
1832
function updateDocNoUndo(cm, from, to, lines, selUpdate) {
1833
var view = cm.view, doc = view.doc, display = cm.display;
1834
if (view.suppressEdits) return;
1836
var nlines = to.line - from.line, firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
1837
var recomputeMaxLength = false, checkWidthStart = from.line;
1838
if (!cm.options.lineWrapping) {
1839
for (var cur = firstLine, merged; merged = collapsedSpanAtStart(cur);) {
1840
checkWidthStart = merged.find().from.line;
1841
cur = getLine(doc, checkWidthStart);
1843
doc.iter(checkWidthStart, to.line + 1, function(line) {
1844
if (lineLength(doc, line) == view.maxLineLength) {
1845
recomputeMaxLength = true;
1851
var lastHL = lst(lines), th = textHeight(display);
1853
// First adjust the line structure
1854
if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") {
1855
// This is a whole-line replace. Treated specially to make
1856
// sure line objects move the way they are supposed to.
1857
var added = [], prevLine = null;
1858
for (var i = 0, e = lines.length - 1; i < e; ++i)
1859
added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th));
1860
updateLine(cm, lastLine, lastLine.text, hlSpans(lastHL));
1861
if (nlines) doc.remove(from.line, nlines, cm);
1862
if (added.length) doc.insert(from.line, added);
1863
} else if (firstLine == lastLine) {
1864
if (lines.length == 1) {
1865
updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) +
1866
firstLine.text.slice(to.ch), hlSpans(lines[0]));
1868
for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)
1869
added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th));
1870
added.push(makeLine(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL), th));
1871
updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
1872
doc.insert(from.line + 1, added);
1874
} else if (lines.length == 1) {
1875
updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) +
1876
lastLine.text.slice(to.ch), hlSpans(lines[0]));
1877
doc.remove(from.line + 1, nlines, cm);
1880
updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
1881
updateLine(cm, lastLine, hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL));
1882
for (var i = 1, e = lines.length - 1; i < e; ++i)
1883
added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th));
1884
if (nlines > 1) doc.remove(from.line + 1, nlines - 1, cm);
1885
doc.insert(from.line + 1, added);
1888
if (cm.options.lineWrapping) {
1889
var perLine = Math.max(5, display.scroller.clientWidth / charWidth(display) - 3);
1890
doc.iter(from.line, from.line + lines.length, function(line) {
1891
if (line.height == 0) return;
1892
var guess = (Math.ceil(line.text.length / perLine) || 1) * th;
1893
if (guess != line.height) updateLineHeight(line, guess);
1896
doc.iter(checkWidthStart, from.line + lines.length, function(line) {
1897
var len = lineLength(doc, line);
1898
if (len > view.maxLineLength) {
1899
view.maxLine = line;
1900
view.maxLineLength = len;
1901
view.maxLineChanged = true;
1902
recomputeMaxLength = false;
1905
if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
1908
// Adjust frontier, schedule worker
1909
view.frontier = Math.min(view.frontier, from.line);
1910
startWorker(cm, 400);
1912
var lendiff = lines.length - nlines - 1;
1913
// Remember that these lines changed, for updating the display
1914
regChange(cm, from.line, to.line + 1, lendiff);
1915
if (hasHandler(cm, "change")) {
1916
// Normalize lines to contain only strings, since that's what
1917
// the change event handler expects
1918
for (var i = 0; i < lines.length; ++i)
1919
if (typeof lines[i] != "string") lines[i] = lines[i].text;
1920
var changeObj = {from: from, to: to, text: lines};
1921
if (cm.curOp.textChanged) {
1922
for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
1923
cur.next = changeObj;
1924
} else cm.curOp.textChanged = changeObj;
1927
// Update the selection
1928
var newSelFrom, newSelTo, end = {line: from.line + lines.length - 1,
1929
ch: hlText(lastHL).length + (lines.length == 1 ? from.ch : 0)};
1930
if (typeof selUpdate == "object" && selUpdate.line != null) {
1931
newSelFrom = newSelTo = selUpdate;
1932
} else if (selUpdate == "end") {
1933
newSelFrom = newSelTo = end;
1934
} else if (selUpdate == "start") {
1935
newSelFrom = newSelTo = from;
1936
} else if (selUpdate == "around") {
1937
newSelFrom = from; newSelTo = end;
1939
var adjustPos = function(pos) {
1940
if (posLess(pos, from)) return pos;
1941
if (!posLess(to, pos)) return end;
1942
var line = pos.line + lendiff;
1944
if (pos.line == to.line)
1945
ch += hlText(lastHL).length - (to.ch - (to.line == from.line ? from.ch : 0));
1946
return {line: line, ch: ch};
1948
newSelFrom = adjustPos(view.sel.from);
1949
newSelTo = adjustPos(view.sel.to);
1951
setSelection(cm, newSelFrom, newSelTo, null, true);
1955
function replaceRange(cm, code, from, to) {
1957
if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
1958
code = splitLines(code);
1959
function adjustPos(pos) {
1960
if (posLess(pos, from)) return pos;
1961
if (!posLess(to, pos)) return end;
1962
var line = pos.line + code.length - (to.line - from.line) - 1;
1964
if (pos.line == to.line)
1965
ch += lst(code).length - (to.ch - (to.line == from.line ? from.ch : 0));
1966
return {line: line, ch: ch};
1968
return updateDoc(cm, from, to, code);
1973
function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
1974
function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
1975
function copyPos(x) {return {line: x.line, ch: x.ch};}
1977
function clipLine(doc, n) {return Math.max(0, Math.min(n, doc.size-1));}
1978
function clipPos(doc, pos) {
1979
if (pos.line < 0) return {line: 0, ch: 0};
1980
if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc, doc.size-1).text.length};
1981
var ch = pos.ch, linelen = getLine(doc, pos.line).text.length;
1982
if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
1983
else if (ch < 0) return {line: pos.line, ch: 0};
1986
function isLine(doc, l) {return l >= 0 && l < doc.size;}
1988
function setShift(view, val) {
1989
if (val) view.sel.shift = view.sel.shift || selHead(view);
1990
else view.sel.shift = null;
1992
function setSelectionUser(cm, from, to, bias) {
1993
var view = cm.view, sh = view.sel.shift;
1995
sh = clipPos(view.doc, sh);
1996
if (posLess(sh, from)) from = sh;
1997
else if (posLess(to, sh)) to = sh;
1999
setSelection(cm, from, to, bias);
2000
cm.curOp.userSelChange = true;
2003
// Update the selection. Last two args are only used by
2004
// updateDoc, since they have to be expressed in the line
2005
// numbers before the update.
2006
function setSelection(cm, from, to, bias, checkAtomic) {
2007
cm.curOp.updateInput = true;
2008
var sel = cm.view.sel, doc = cm.view.doc;
2009
cm.view.goalColumn = null;
2010
if (!checkAtomic && posEq(sel.from, from) && posEq(sel.to, to)) return;
2011
if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
2013
// Skip over atomic spans.
2014
if (checkAtomic || !posEq(from, sel.from))
2015
from = skipAtomic(cm, from, bias, checkAtomic != "push");
2016
if (checkAtomic || !posEq(to, sel.to))
2017
to = skipAtomic(cm, to, bias, checkAtomic != "push");
2019
if (posEq(from, to)) sel.inverted = false;
2020
else if (posEq(from, sel.to)) sel.inverted = false;
2021
else if (posEq(to, sel.from)) sel.inverted = true;
2023
if (cm.options.autoClearEmptyLines && posEq(sel.from, sel.to)) {
2024
var head = selHead(cm.view);
2025
if (head.line != sel.from.line && sel.from.line < doc.size) {
2026
var oldLine = getLine(doc, sel.from.line);
2027
if (/^\s+$/.test(oldLine.text))
2028
setTimeout(operation(cm, function() {
2029
if (oldLine.parent && /^\s+$/.test(oldLine.text)) {
2030
var no = lineNo(oldLine);
2031
replaceRange(cm, "", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});
2037
sel.from = from; sel.to = to;
2038
cm.curOp.selectionChanged = true;
2041
function reCheckSelection(cm) {
2042
setSelection(cm, cm.view.sel.from, cm.view.sel.to, null, "push");
2045
function skipAtomic(cm, pos, bias, mayClear) {
2046
var doc = cm.view.doc, flipped = false, curPos = pos;
2047
var dir = bias || 1;
2048
cm.view.cantEdit = false;
2050
var line = getLine(doc, curPos.line), toClear;
2051
if (line.markedSpans) {
2052
for (var i = 0; i < line.markedSpans.length; ++i) {
2053
var sp = line.markedSpans[i], m = sp.marker;
2054
if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
2055
(sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
2056
if (mayClear && m.clearOnEnter) {
2057
(toClear || (toClear = [])).push(m);
2059
} else if (!m.atomic) continue;
2060
var newPos = m.find()[dir < 0 ? "from" : "to"];
2061
if (posEq(newPos, curPos)) {
2063
if (newPos.ch < 0) {
2064
if (newPos.line) newPos = clipPos(doc, {line: newPos.line - 1});
2066
} else if (newPos.ch > line.text.length) {
2067
if (newPos.line < doc.size - 1) newPos = {line: newPos.line + 1, ch: 0};
2072
// Driven in a corner -- no valid cursor position found at all
2073
// -- try again *with* clearing, if we didn't already
2074
if (!mayClear) return skipAtomic(cm, pos, bias, true);
2075
// Otherwise, turn off editing until further notice, and return the start of the doc
2076
cm.view.cantEdit = true;
2077
return {line: 0, ch: 0};
2079
flipped = true; newPos = pos; dir = -dir;
2086
if (toClear) for (var i = 0; i < toClear.length; ++i) toClear[i].clear();
2094
function scrollCursorIntoView(cm) {
2095
var view = cm.view, coords = cursorCoords(cm, selHead(view));
2096
scrollIntoView(cm.display, coords.left, coords.top, coords.left, coords.bottom);
2097
if (!view.focused) return;
2098
var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
2099
if (coords.top + box.top < 0) doScroll = true;
2100
else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
2101
if (doScroll != null && !phantom) {
2102
var hidden = display.cursor.style.display == "none";
2104
display.cursor.style.display = "";
2105
display.cursor.style.left = coords.left + "px";
2106
display.cursor.style.top = (coords.top - display.viewOffset) + "px";
2108
display.cursor.scrollIntoView(doScroll);
2109
if (hidden) display.cursor.style.display = "none";
2113
function scrollIntoView(display, x1, y1, x2, y2) {
2114
var scrollPos = calculateScrollPos(display, x1, y1, x2, y2);
2115
if (scrollPos.scrollLeft != null) {display.scrollbarH.scrollLeft = display.scroller.scrollLeft = scrollPos.scrollLeft;}
2116
if (scrollPos.scrollTop != null) {display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos.scrollTop;}
2119
function calculateScrollPos(display, x1, y1, x2, y2) {
2120
var pt = paddingTop(display);
2122
var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
2123
var docBottom = display.scroller.scrollHeight - scrollerCutOff;
2124
var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
2125
if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);
2126
else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2 - screen);
2128
var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
2129
x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
2130
var gutterw = display.gutters.offsetWidth;
2131
var atLeft = x1 < gutterw + 10;
2132
if (x1 < screenleft + gutterw || atLeft) {
2134
result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
2135
} else if (x2 > screenw + screenleft - 3) {
2136
result.scrollLeft = x2 + 10 - screenw;
2143
function indentLine(cm, n, how) {
2144
var doc = cm.view.doc;
2145
if (!how) how = "add";
2146
if (how == "smart") {
2147
if (!cm.view.mode.indent) how = "prev";
2148
else var state = getStateBefore(cm, n);
2151
var tabSize = cm.options.tabSize;
2152
var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
2153
var curSpaceString = line.text.match(/^\s*/)[0], indentation;
2154
if (how == "smart") {
2155
indentation = cm.view.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
2156
if (indentation == Pass) how = "prev";
2158
if (how == "prev") {
2159
if (n) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
2160
else indentation = 0;
2162
else if (how == "add") indentation = curSpace + cm.options.indentUnit;
2163
else if (how == "subtract") indentation = curSpace - cm.options.indentUnit;
2164
indentation = Math.max(0, indentation);
2165
var diff = indentation - curSpace;
2167
var indentString = "", pos = 0;
2168
if (cm.options.indentWithTabs)
2169
for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
2170
if (pos < indentation) indentString += spaceStr(indentation - pos);
2172
if (indentString != curSpaceString)
2173
replaceRange(cm, indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
2174
line.stateAfter = null;
2177
function changeLine(cm, handle, op) {
2178
var no = handle, line = handle, doc = cm.view.doc;
2179
if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
2180
else no = lineNo(handle);
2181
if (no == null) return null;
2182
if (op(line, no)) regChange(cm, no, no + 1);
2187
function findPosH(cm, dir, unit, visually) {
2188
var doc = cm.view.doc, end = selHead(cm.view), line = end.line, ch = end.ch;
2189
var lineObj = getLine(doc, line);
2190
function findNextLine() {
2192
if (l < 0 || l == doc.size) return false;
2194
return lineObj = getLine(doc, l);
2196
function moveOnce(boundToLine) {
2197
var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
2199
if (!boundToLine && findNextLine()) {
2200
if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
2201
else ch = dir < 0 ? lineObj.text.length : 0;
2202
} else return false;
2206
if (unit == "char") moveOnce();
2207
else if (unit == "column") moveOnce(true);
2208
else if (unit == "word") {
2209
var sawWord = false;
2211
if (dir < 0) if (!moveOnce()) break;
2212
if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
2213
else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
2214
if (dir > 0) if (!moveOnce()) break;
2217
return skipAtomic(cm, {line: line, ch: ch}, dir, true);
2220
function findWordAt(line, pos) {
2221
var start = pos.ch, end = pos.ch;
2223
if (pos.after === false || end == line.length) --start; else ++end;
2224
var startChar = line.charAt(start);
2225
var check = isWordChar(startChar) ? isWordChar :
2226
/\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} :
2227
function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
2228
while (start > 0 && check(line.charAt(start - 1))) --start;
2229
while (end < line.length && check(line.charAt(end))) ++end;
2231
return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}};
2234
function selectLine(cm, line) {
2235
setSelectionUser(cm, {line: line, ch: 0}, clipPos(cm.view.doc, {line: line + 1, ch: 0}));
2240
// The publicly visible API. Note that operation(null, f) means
2241
// 'wrap f in an operation, performed on its `this` parameter'
2243
CodeMirror.prototype = {
2244
getValue: function(lineSep) {
2245
var text = [], doc = this.view.doc;
2246
doc.iter(0, doc.size, function(line) { text.push(line.text); });
2247
return text.join(lineSep || "\n");
2250
setValue: operation(null, function(code) {
2251
var doc = this.view.doc, top = {line: 0, ch: 0}, lastLen = getLine(doc, doc.size-1).text.length;
2252
updateDocInner(this, top, {line: doc.size - 1, ch: lastLen}, splitLines(code), top, top);
2255
getSelection: function(lineSep) { return this.getRange(this.view.sel.from, this.view.sel.to, lineSep); },
2257
replaceSelection: operation(null, function(code, collapse) {
2258
var sel = this.view.sel;
2259
updateDoc(this, sel.from, sel.to, splitLines(code), collapse || "around");
2262
focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);},
2264
setOption: function(option, value) {
2265
var options = this.options, old = options[option];
2266
if (options[option] == value && option != "mode") return;
2267
options[option] = value;
2268
if (optionHandlers.hasOwnProperty(option))
2269
operation(this, optionHandlers[option])(this, value, old);
2272
getOption: function(option) {return this.options[option];},
2274
getMode: function() {return this.view.mode;},
2276
undo: operation(null, function() {
2277
var hist = this.view.history;
2278
unredoHelper(this, hist.done, hist.undone, -1);
2280
redo: operation(null, function() {
2281
var hist = this.view.history;
2282
unredoHelper(this, hist.undone, hist.done, 1);
2285
indentLine: operation(null, function(n, dir) {
2286
if (typeof dir != "string") {
2287
if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
2288
else dir = dir ? "add" : "subtract";
2290
if (isLine(this.view.doc, n)) indentLine(this, n, dir);
2293
indentSelection: operation(null, function(how) {
2294
var sel = this.view.sel;
2295
if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how);
2296
var e = sel.to.line - (sel.to.ch ? 0 : 1);
2297
for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
2300
historySize: function() {
2301
var hist = this.view.history;
2302
return {undo: hist.done.length, redo: hist.undone.length};
2305
clearHistory: function() {this.view.history = makeHistory();},
2307
markClean: function() {
2308
this.view.history.dirtyCounter = 0;
2309
this.view.history.closed = true;
2312
isClean: function () {return this.view.history.dirtyCounter == 0;},
2314
getHistory: function() {
2315
var hist = this.view.history;
2317
for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {
2318
nw.push(nwelt = []);
2319
for (var j = 0, elt = arr[i]; j < elt.length; ++j) {
2320
var old = [], cur = elt[j];
2321
nwelt.push({start: cur.start, added: cur.added, old: old});
2322
for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));
2327
return {done: cp(hist.done), undone: cp(hist.undone)};
2330
setHistory: function(histData) {
2331
var hist = this.view.history = makeHistory();
2332
hist.done = histData.done;
2333
hist.undone = histData.undone;
2336
getTokenAt: function(pos) {
2337
var doc = this.view.doc;
2338
pos = clipPos(doc, pos);
2339
return getTokenAt(this, getLine(doc, pos.line), getStateBefore(this, pos.line), pos.ch);
2342
getStateAfter: function(line) {
2343
var doc = this.view.doc;
2344
line = clipLine(doc, line == null ? doc.size - 1: line);
2345
return getStateBefore(this, line + 1);
2348
cursorCoords: function(start, mode) {
2349
var pos, sel = this.view.sel;
2350
if (start == null) start = sel.inverted;
2351
if (typeof start == "object") pos = clipPos(this.view.doc, start);
2352
else pos = start ? sel.from : sel.to;
2353
return cursorCoords(this, pos, mode || "page");
2356
charCoords: function(pos, mode) {
2357
return charCoords(this, clipPos(this.view.doc, pos), mode || "page");
2360
coordsChar: function(coords) {
2361
var off = this.display.lineSpace.getBoundingClientRect();
2362
return coordsChar(this, coords.left - off.left, coords.top - off.top);
2365
defaultTextHeight: function() { return textHeight(this.display); },
2367
markText: operation(null, function(from, to, options) {
2368
return markText(this, clipPos(this.view.doc, from), clipPos(this.view.doc, to),
2372
setBookmark: operation(null, function(pos, widget) {
2373
pos = clipPos(this.view.doc, pos);
2374
return markText(this, pos, pos, widget ? {replacedWith: widget} : {}, "bookmark");
2377
findMarksAt: function(pos) {
2378
var doc = this.view.doc;
2379
pos = clipPos(doc, pos);
2380
var markers = [], spans = getLine(doc, pos.line).markedSpans;
2381
if (spans) for (var i = 0; i < spans.length; ++i) {
2382
var span = spans[i];
2383
if ((span.from == null || span.from <= pos.ch) &&
2384
(span.to == null || span.to >= pos.ch))
2385
markers.push(span.marker);
2390
setGutterMarker: operation(null, function(line, gutterID, value) {
2391
return changeLine(this, line, function(line) {
2392
var markers = line.gutterMarkers || (line.gutterMarkers = {});
2393
markers[gutterID] = value;
2394
if (!value && isEmpty(markers)) line.gutterMarkers = null;
2399
clearGutter: operation(null, function(gutterID) {
2400
var i = 0, cm = this, doc = cm.view.doc;
2401
doc.iter(0, doc.size, function(line) {
2402
if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
2403
line.gutterMarkers[gutterID] = null;
2404
regChange(cm, i, i + 1);
2405
if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
2411
addLineClass: operation(null, function(handle, where, cls) {
2412
return changeLine(this, handle, function(line) {
2413
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
2414
if (!line[prop]) line[prop] = cls;
2415
else if (new RegExp("\\b" + cls + "\\b").test(line[prop])) return false;
2416
else line[prop] += " " + cls;
2421
removeLineClass: operation(null, function(handle, where, cls) {
2422
return changeLine(this, handle, function(line) {
2423
var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
2424
var cur = line[prop];
2425
if (!cur) return false;
2426
else if (cls == null) line[prop] = null;
2428
var upd = cur.replace(new RegExp("^" + cls + "\\b\\s*|\\s*\\b" + cls + "\\b"), "");
2429
if (upd == cur) return false;
2430
line[prop] = upd || null;
2436
addLineWidget: operation(null, function addLineWidget(handle, node, options) {
2437
var widget = options || {};
2439
if (widget.noHScroll) this.display.alignWidgets = true;
2440
changeLine(this, handle, function(line) {
2441
(line.widgets || (line.widgets = [])).push(widget);
2448
removeLineWidget: operation(null, function(widget) {
2449
var ws = widget.line.widgets, no = lineNo(widget.line);
2450
if (no == null) return;
2451
for (var i = 0; i < ws.length; ++i) if (ws[i] == widget) ws.splice(i--, 1);
2452
regChange(this, no, no + 1);
2455
lineInfo: function(line) {
2456
if (typeof line == "number") {
2457
if (!isLine(this.view.doc, line)) return null;
2459
line = getLine(this.view.doc, line);
2460
if (!line) return null;
2462
var n = lineNo(line);
2463
if (n == null) return null;
2465
return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
2466
textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
2467
widgets: line.widgets};
2470
getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},
2472
addWidget: function(pos, node, scroll, vert, horiz) {
2473
var display = this.display;
2474
pos = cursorCoords(this, clipPos(this.view.doc, pos));
2475
var top = pos.top, left = pos.left;
2476
node.style.position = "absolute";
2477
display.sizer.appendChild(node);
2478
if (vert == "over") top = pos.top;
2479
else if (vert == "near") {
2480
var vspace = Math.max(display.wrapper.clientHeight, this.view.doc.height),
2481
hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
2482
if (pos.bottom + node.offsetHeight > vspace && pos.top > node.offsetHeight)
2483
top = pos.top - node.offsetHeight;
2484
if (left + node.offsetWidth > hspace)
2485
left = hspace - node.offsetWidth;
2487
node.style.top = (top + paddingTop(display)) + "px";
2488
node.style.left = node.style.right = "";
2489
if (horiz == "right") {
2490
left = display.sizer.clientWidth - node.offsetWidth;
2491
node.style.right = "0px";
2493
if (horiz == "left") left = 0;
2494
else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
2495
node.style.left = left + "px";
2498
scrollIntoView(display, left, top, left + node.offsetWidth, top + node.offsetHeight);
2501
lineCount: function() {return this.view.doc.size;},
2503
clipPos: function(pos) {return clipPos(this.view.doc, pos);},
2505
getCursor: function(start) {
2506
var sel = this.view.sel;
2507
if (start == null) start = sel.inverted;
2508
return copyPos(start ? sel.from : sel.to);
2511
somethingSelected: function() {return !posEq(this.view.sel.from, this.view.sel.to);},
2513
setCursor: operation(null, function(line, ch, user) {
2514
var pos = typeof line == "number" ? {line: line, ch: ch || 0} : line;
2515
(user ? setSelectionUser : setSelection)(this, pos, pos);
2518
setSelection: operation(null, function(from, to, user) {
2519
var doc = this.view.doc;
2520
(user ? setSelectionUser : setSelection)(this, clipPos(doc, from), clipPos(doc, to || from));
2523
getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
2525
getLineHandle: function(line) {
2526
var doc = this.view.doc;
2527
if (isLine(doc, line)) return getLine(doc, line);
2530
getLineNumber: function(line) {return lineNo(line);},
2532
setLine: operation(null, function(line, text) {
2533
if (isLine(this.view.doc, line))
2534
replaceRange(this, text, {line: line, ch: 0}, {line: line, ch: getLine(this.view.doc, line).text.length});
2537
removeLine: operation(null, function(line) {
2538
if (isLine(this.view.doc, line))
2539
replaceRange(this, "", {line: line, ch: 0}, clipPos(this.view.doc, {line: line+1, ch: 0}));
2542
replaceRange: operation(null, function(code, from, to) {
2543
var doc = this.view.doc;
2544
from = clipPos(doc, from);
2545
to = to ? clipPos(doc, to) : from;
2546
return replaceRange(this, code, from, to);
2549
getRange: function(from, to, lineSep) {
2550
var doc = this.view.doc;
2551
from = clipPos(doc, from); to = clipPos(doc, to);
2552
var l1 = from.line, l2 = to.line;
2553
if (l1 == l2) return getLine(doc, l1).text.slice(from.ch, to.ch);
2554
var code = [getLine(doc, l1).text.slice(from.ch)];
2555
doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
2556
code.push(getLine(doc, l2).text.slice(0, to.ch));
2557
return code.join(lineSep || "\n");
2560
triggerOnKeyDown: operation(null, onKeyDown),
2562
execCommand: function(cmd) {return commands[cmd](this);},
2564
// Stuff used by commands, probably not much use to outside code.
2565
moveH: operation(null, function(dir, unit) {
2566
var sel = this.view.sel, pos = dir < 0 ? sel.from : sel.to;
2567
if (sel.shift || posEq(sel.from, sel.to)) pos = findPosH(this, dir, unit, true);
2568
setSelectionUser(this, pos, pos, dir);
2571
deleteH: operation(null, function(dir, unit) {
2572
var sel = this.view.sel;
2573
if (!posEq(sel.from, sel.to)) replaceRange(this, "", sel.from, sel.to);
2574
else replaceRange(this, "", sel.from, findPosH(this, dir, unit, false));
2575
this.curOp.userSelChange = true;
2578
moveV: operation(null, function(dir, unit) {
2579
var view = this.view, doc = view.doc, display = this.display;
2580
var dist = 0, cur = selHead(view), pos = cursorCoords(this, cur, "div");
2581
var x = pos.left, y;
2582
if (view.goalColumn != null) x = view.goalColumn;
2583
if (unit == "page") {
2584
var pageSize = Math.min(display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
2585
y = pos.top + dir * pageSize;
2586
} else if (unit == "line") {
2587
y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
2590
var target = coordsChar(this, x, y);
2592
} while (target.outside && (dir < 0 ? y > 0 : y < doc.height));
2594
if (unit == "page") display.scrollbarV.scrollTop += charCoords(this, target, "div").top - pos.top;
2595
setSelectionUser(this, target, target, dir);
2596
view.goalColumn = x;
2599
toggleOverwrite: function() {
2600
if (this.view.overwrite = !this.view.overwrite)
2601
this.display.cursor.className += " CodeMirror-overwrite";
2603
this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
2606
posFromIndex: function(off) {
2607
var lineNo = 0, ch, doc = this.view.doc;
2608
doc.iter(0, doc.size, function(line) {
2609
var sz = line.text.length + 1;
2610
if (sz > off) { ch = off; return true; }
2614
return clipPos(doc, {line: lineNo, ch: ch});
2616
indexFromPos: function (coords) {
2617
if (coords.line < 0 || coords.ch < 0) return 0;
2618
var index = coords.ch;
2619
this.view.doc.iter(0, coords.line, function (line) {
2620
index += line.text.length + 1;
2625
scrollTo: function(x, y) {
2626
if (x != null) this.display.scrollbarH.scrollLeft = this.display.scroller.scrollLeft = x;
2627
if (y != null) this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = y;
2628
updateDisplay(this, []);
2630
getScrollInfo: function() {
2631
var scroller = this.display.scroller, co = scrollerCutOff;
2632
return {left: scroller.scrollLeft, top: scroller.scrollTop,
2633
height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
2634
clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
2637
scrollIntoView: function(pos) {
2638
pos = pos ? clipPos(this.view.doc, pos) : selHead(this.view);
2639
var coords = cursorCoords(this, pos);
2640
scrollIntoView(this.display, coords.left, coords.top, coords.left, coords.bottom);
2643
setSize: function(width, height) {
2644
function interpret(val) {
2645
return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
2647
if (width != null) this.display.wrapper.style.width = interpret(width);
2648
if (height != null) this.display.wrapper.style.height = interpret(height);
2652
on: function(type, f) {on(this, type, f);},
2653
off: function(type, f) {off(this, type, f);},
2655
operation: function(f){return operation(this, f)();},
2656
compoundChange: function(f){return compoundChange(this, f);},
2658
refresh: function(){
2659
updateDisplay(this, true, this.view.scrollTop);
2660
if (this.display.scrollbarV.scrollHeight > this.view.scrollTop)
2661
this.display.scrollbarV.scrollTop = this.view.scrollTop;
2664
getInputField: function(){return this.display.input;},
2665
getWrapperElement: function(){return this.display.wrapper;},
2666
getScrollerElement: function(){return this.display.scroller;},
2667
getGutterElement: function(){return this.display.gutters;}
2672
var optionHandlers = CodeMirror.optionHandlers = {};
2674
// The default configuration options.
2675
var defaults = CodeMirror.defaults = {};
2677
function option(name, deflt, handle, notOnInit) {
2678
CodeMirror.defaults[name] = deflt;
2679
if (handle) optionHandlers[name] =
2680
notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
2683
var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
2685
// These two are, on init, called from the constructor because they
2686
// have to be initialized before the editor can start at all.
2687
option("value", "", function(cm, val) {cm.setValue(val);}, true);
2688
option("mode", null, loadMode, true);
2690
option("indentUnit", 2, loadMode, true);
2691
option("indentWithTabs", false);
2692
option("smartIndent", true);
2693
option("tabSize", 4, function(cm) {loadMode(cm); updateDisplay(cm, true);}, true);
2694
option("electricChars", true);
2695
option("autoClearEmptyLines", false);
2697
option("theme", "default", function(cm, val, old) {
2699
if (old != Init) guttersChanged(cm);
2701
option("keyMap", "default", keyMapChanged);
2702
option("extraKeys", null);
2704
option("onKeyEvent", null);
2705
option("onDragEvent", null);
2707
option("lineWrapping", false, wrappingChanged);
2708
option("gutters", [], function(cm) {
2709
setGuttersForLineNumbers(cm.options);
2712
option("lineNumbers", false, function(cm) {
2713
setGuttersForLineNumbers(cm.options);
2716
option("firstLineNumber", 1, guttersChanged, false);
2717
option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, false);
2719
option("readOnly", false, function(cm, val) {
2720
if (val == "nocursor") {onBlur(cm); cm.display.input.blur();}
2721
else if (!val) resetInput(cm, true);
2723
option("dragDrop", true);
2725
option("cursorBlinkRate", 530);
2726
option("cursorHeight", 1);
2727
option("workTime", 100);
2728
option("workDelay", 100);
2729
option("flattenSpans", true);
2730
option("pollInterval", 100);
2731
option("undoDepth", 40);
2732
option("viewportMargin", 10, function(cm){cm.refresh();}, true);
2734
option("tabindex", null, function(cm, val) {
2735
cm.display.input.tabIndex = val || "";
2737
option("autofocus", null);
2739
// MODE DEFINITION AND QUERYING
2741
// Known modes, by name and by MIME
2742
var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
2744
CodeMirror.defineMode = function(name, mode) {
2745
if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
2746
if (arguments.length > 2) {
2747
mode.dependencies = [];
2748
for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
2753
CodeMirror.defineMIME = function(mime, spec) {
2754
mimeModes[mime] = spec;
2757
CodeMirror.resolveMode = function(spec) {
2758
if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
2759
spec = mimeModes[spec];
2760
else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec))
2761
return CodeMirror.resolveMode("application/xml");
2762
if (typeof spec == "string") return {name: spec};
2763
else return spec || {name: "null"};
2766
CodeMirror.getMode = function(options, spec) {
2767
var spec = CodeMirror.resolveMode(spec);
2768
var mfactory = modes[spec.name];
2769
if (!mfactory) return CodeMirror.getMode(options, "text/plain");
2770
var modeObj = mfactory(options, spec);
2771
if (modeExtensions.hasOwnProperty(spec.name)) {
2772
var exts = modeExtensions[spec.name];
2773
for (var prop in exts) if (exts.hasOwnProperty(prop)) modeObj[prop] = exts[prop];
2775
modeObj.name = spec.name;
2779
CodeMirror.defineMode("null", function() {
2780
return {token: function(stream) {stream.skipToEnd();}};
2782
CodeMirror.defineMIME("text/plain", "null");
2784
var modeExtensions = CodeMirror.modeExtensions = {};
2785
CodeMirror.extendMode = function(mode, properties) {
2786
var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
2787
for (var prop in properties) if (properties.hasOwnProperty(prop))
2788
exts[prop] = properties[prop];
2793
CodeMirror.defineExtension = function(name, func) {
2794
CodeMirror.prototype[name] = func;
2797
CodeMirror.defineOption = option;
2800
CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
2802
// MODE STATE HANDLING
2804
// Utility functions for working with state. Exported because modes
2805
// sometimes need to do this.
2806
function copyState(mode, state) {
2807
if (state === true) return state;
2808
if (mode.copyState) return mode.copyState(state);
2810
for (var n in state) {
2812
if (val instanceof Array) val = val.concat([]);
2817
CodeMirror.copyState = copyState;
2819
function startState(mode, a1, a2) {
2820
return mode.startState ? mode.startState(a1, a2) : true;
2822
CodeMirror.startState = startState;
2824
CodeMirror.innerMode = function(mode, state) {
2825
while (mode.innerMode) {
2826
var info = mode.innerMode(state);
2830
return info || {mode: mode, state: state};
2833
// STANDARD COMMANDS
2835
var commands = CodeMirror.commands = {
2836
selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
2837
killLine: function(cm) {
2838
var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
2839
if (!sel && cm.getLine(from.line).length == from.ch)
2840
cm.replaceRange("", from, {line: from.line + 1, ch: 0});
2841
else cm.replaceRange("", from, sel ? to : {line: from.line});
2843
deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
2844
undo: function(cm) {cm.undo();},
2845
redo: function(cm) {cm.redo();},
2846
goDocStart: function(cm) {cm.setCursor(0, 0, true);},
2847
goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
2848
goLineStart: function(cm) {
2849
cm.setCursor(lineStart(cm, cm.getCursor().line), null, true);
2851
goLineStartSmart: function(cm) {
2852
var cur = cm.getCursor(), start = lineStart(cm, cur.line);
2853
var line = cm.getLineHandle(start.line);
2854
var order = getOrder(line);
2855
if (!order || order[0].level == 0) {
2856
var firstNonWS = Math.max(0, line.text.search(/\S/));
2857
var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
2858
cm.setCursor(start.line, inWS ? 0 : firstNonWS, true);
2859
} else cm.setCursor(start, null, true);
2861
goLineEnd: function(cm) {
2862
cm.setCursor(lineEnd(cm, cm.getCursor().line), null, true);
2864
goLineUp: function(cm) {cm.moveV(-1, "line");},
2865
goLineDown: function(cm) {cm.moveV(1, "line");},
2866
goPageUp: function(cm) {cm.moveV(-1, "page");},
2867
goPageDown: function(cm) {cm.moveV(1, "page");},
2868
goCharLeft: function(cm) {cm.moveH(-1, "char");},
2869
goCharRight: function(cm) {cm.moveH(1, "char");},
2870
goColumnLeft: function(cm) {cm.moveH(-1, "column");},
2871
goColumnRight: function(cm) {cm.moveH(1, "column");},
2872
goWordLeft: function(cm) {cm.moveH(-1, "word");},
2873
goWordRight: function(cm) {cm.moveH(1, "word");},
2874
delCharBefore: function(cm) {cm.deleteH(-1, "char");},
2875
delCharAfter: function(cm) {cm.deleteH(1, "char");},
2876
delWordBefore: function(cm) {cm.deleteH(-1, "word");},
2877
delWordAfter: function(cm) {cm.deleteH(1, "word");},
2878
indentAuto: function(cm) {cm.indentSelection("smart");},
2879
indentMore: function(cm) {cm.indentSelection("add");},
2880
indentLess: function(cm) {cm.indentSelection("subtract");},
2881
insertTab: function(cm) {cm.replaceSelection("\t", "end");},
2882
defaultTab: function(cm) {
2883
if (cm.somethingSelected()) cm.indentSelection("add");
2884
else cm.replaceSelection("\t", "end");
2886
transposeChars: function(cm) {
2887
var cur = cm.getCursor(), line = cm.getLine(cur.line);
2888
if (cur.ch > 0 && cur.ch < line.length - 1)
2889
cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
2890
{line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
2892
newlineAndIndent: function(cm) {
2893
cm.replaceSelection("\n", "end");
2894
cm.indentLine(cm.getCursor().line);
2896
toggleOverwrite: function(cm) {cm.toggleOverwrite();}
2901
var keyMap = CodeMirror.keyMap = {};
2903
"Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
2904
"End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
2905
"Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
2906
"Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
2908
// Note that the save and find-related commands aren't defined by
2909
// default. Unknown commands are simply ignored.
2910
keyMap.pcDefault = {
2911
"Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
2912
"Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
2913
"Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
2914
"Ctrl-Backspace": "delWordBefore", "Ctrl-Delete": "delWordAfter", "Ctrl-S": "save", "Ctrl-F": "find",
2915
"Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
2916
"Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
2917
fallthrough: "basic"
2919
keyMap.macDefault = {
2920
"Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
2921
"Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
2922
"Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordBefore",
2923
"Ctrl-Alt-Backspace": "delWordAfter", "Alt-Delete": "delWordAfter", "Cmd-S": "save", "Cmd-F": "find",
2924
"Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
2925
"Cmd-[": "indentLess", "Cmd-]": "indentMore",
2926
fallthrough: ["basic", "emacsy"]
2928
keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
2930
"Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
2931
"Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
2932
"Ctrl-V": "goPageUp", "Shift-Ctrl-V": "goPageDown", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
2933
"Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
2938
function getKeyMap(val) {
2939
if (typeof val == "string") return keyMap[val];
2943
function lookupKey(name, extraMap, map, handle, stop) {
2944
function lookup(map) {
2945
map = getKeyMap(map);
2946
var found = map[name];
2947
if (found === false) {
2951
if (found != null && handle(found)) return true;
2952
if (map.nofallthrough) {
2956
var fallthrough = map.fallthrough;
2957
if (fallthrough == null) return false;
2958
if (Object.prototype.toString.call(fallthrough) != "[object Array]")
2959
return lookup(fallthrough);
2960
for (var i = 0, e = fallthrough.length; i < e; ++i) {
2961
if (lookup(fallthrough[i])) return true;
2965
if (extraMap && lookup(extraMap)) return true;
2968
function isModifierKey(event) {
2969
var name = keyNames[e_prop(event, "keyCode")];
2970
return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
2972
CodeMirror.isModifierKey = isModifierKey;
2976
CodeMirror.fromTextArea = function(textarea, options) {
2977
if (!options) options = {};
2978
options.value = textarea.value;
2979
if (!options.tabindex && textarea.tabindex)
2980
options.tabindex = textarea.tabindex;
2981
// Set autofocus to true if this textarea is focused, or if it has
2982
// autofocus and no other element is focused.
2983
if (options.autofocus == null) {
2984
var hasFocus = document.body;
2985
// doc.activeElement occasionally throws on IE
2986
try { hasFocus = document.activeElement; } catch(e) {}
2987
options.autofocus = hasFocus == textarea ||
2988
textarea.getAttribute("autofocus") != null && hasFocus == document.body;
2991
function save() {textarea.value = cm.getValue();}
2992
if (textarea.form) {
2993
// Deplorable hack to make the submit method do the right thing.
2994
on(textarea.form, "submit", save);
2995
if (typeof textarea.form.submit == "function") {
2996
var realSubmit = textarea.form.submit;
2997
textarea.form.submit = function wrappedSubmit() {
2999
textarea.form.submit = realSubmit;
3000
textarea.form.submit();
3001
textarea.form.submit = wrappedSubmit;
3006
textarea.style.display = "none";
3007
var cm = CodeMirror(function(node) {
3008
textarea.parentNode.insertBefore(node, textarea.nextSibling);
3011
cm.getTextArea = function() { return textarea; };
3012
cm.toTextArea = function() {
3014
textarea.parentNode.removeChild(cm.getWrapperElement());
3015
textarea.style.display = "";
3016
if (textarea.form) {
3017
off(textarea.form, "submit", save);
3018
if (typeof textarea.form.submit == "function")
3019
textarea.form.submit = realSubmit;
3027
// Fed to the mode parsers, provides helper functions to make
3028
// parsers more succinct.
3030
// The character stream used by a mode's parser.
3031
function StringStream(string, tabSize) {
3032
this.pos = this.start = 0;
3033
this.string = string;
3034
this.tabSize = tabSize || 8;
3037
StringStream.prototype = {
3038
eol: function() {return this.pos >= this.string.length;},
3039
sol: function() {return this.pos == 0;},
3040
peek: function() {return this.string.charAt(this.pos) || undefined;},
3042
if (this.pos < this.string.length)
3043
return this.string.charAt(this.pos++);
3045
eat: function(match) {
3046
var ch = this.string.charAt(this.pos);
3047
if (typeof match == "string") var ok = ch == match;
3048
else var ok = ch && (match.test ? match.test(ch) : match(ch));
3049
if (ok) {++this.pos; return ch;}
3051
eatWhile: function(match) {
3052
var start = this.pos;
3053
while (this.eat(match)){}
3054
return this.pos > start;
3056
eatSpace: function() {
3057
var start = this.pos;
3058
while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
3059
return this.pos > start;
3061
skipToEnd: function() {this.pos = this.string.length;},
3062
skipTo: function(ch) {
3063
var found = this.string.indexOf(ch, this.pos);
3064
if (found > -1) {this.pos = found; return true;}
3066
backUp: function(n) {this.pos -= n;},
3067
column: function() {return countColumn(this.string, this.start, this.tabSize);},
3068
indentation: function() {return countColumn(this.string, null, this.tabSize);},
3069
match: function(pattern, consume, caseInsensitive) {
3070
if (typeof pattern == "string") {
3071
var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
3072
if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
3073
if (consume !== false) this.pos += pattern.length;
3077
var match = this.string.slice(this.pos).match(pattern);
3078
if (match && match.index > 0) return null;
3079
if (match && consume !== false) this.pos += match[0].length;
3083
current: function(){return this.string.slice(this.start, this.pos);}
3085
CodeMirror.StringStream = StringStream;
3089
function TextMarker(cm, type) {
3095
TextMarker.prototype.clear = function() {
3096
if (this.explicitlyCleared) return;
3097
startOperation(this.cm);
3098
var min = null, max = null;
3099
for (var i = 0; i < this.lines.length; ++i) {
3100
var line = this.lines[i];
3101
var span = getMarkedSpanFor(line.markedSpans, this);
3102
if (span.to != null) max = lineNo(line);
3103
line.markedSpans = removeMarkedSpan(line.markedSpans, span);
3104
if (span.from != null)
3106
else if (this.collapsed && !lineIsHidden(line))
3107
updateLineHeight(line, textHeight(this.cm.display));
3109
if (min != null) regChange(this.cm, min, max + 1);
3110
this.lines.length = 0;
3111
this.explicitlyCleared = true;
3112
if (this.collapsed && this.cm.view.cantEdit) {
3113
this.cm.view.cantEdit = false;
3114
reCheckSelection(this.cm);
3116
endOperation(this.cm);
3117
signalLater(this.cm, this, "clear");
3120
TextMarker.prototype.find = function() {
3122
for (var i = 0; i < this.lines.length; ++i) {
3123
var line = this.lines[i];
3124
var span = getMarkedSpanFor(line.markedSpans, this);
3125
if (span.from != null || span.to != null) {
3126
var found = lineNo(line);
3127
if (span.from != null) from = {line: found, ch: span.from};
3128
if (span.to != null) to = {line: found, ch: span.to};
3131
if (this.type == "bookmark") return from;
3132
return from && {from: from, to: to};
3135
function markText(cm, from, to, options, type) {
3136
var doc = cm.view.doc;
3137
var marker = new TextMarker(cm, type);
3138
if (type == "range" && !posLess(from, to)) return marker;
3139
if (options) for (var opt in options) if (options.hasOwnProperty(opt))
3140
marker[opt] = options[opt];
3141
if (marker.replacedWith) {
3142
marker.collapsed = true;
3143
marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
3145
if (marker.collapsed) sawCollapsedSpans = true;
3147
var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd;
3148
doc.iter(curLine, to.line + 1, function(line) {
3149
var span = {from: null, to: null, marker: marker};
3150
size += line.text.length;
3151
if (curLine == from.line) {span.from = from.ch; size -= from.ch;}
3152
if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;}
3153
if (marker.collapsed) {
3154
if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch);
3155
if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch);
3156
else updateLineHeight(line, 0);
3158
addMarkedSpan(line, span);
3159
if (marker.collapsed && curLine == from.line && lineIsHidden(line))
3160
updateLineHeight(line, 0);
3164
if (marker.readOnly) {
3165
sawReadOnlySpans = true;
3166
if (cm.view.history.done.length || cm.view.history.undone.length)
3169
if (marker.collapsed) {
3170
if (collapsedAtStart != collapsedAtEnd)
3171
throw new Error("Inserting collapsed marker overlapping an existing one");
3173
marker.atomic = true;
3175
if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed)
3176
regChange(cm, from.line, to.line + 1);
3177
if (marker.atomic) reCheckSelection(cm);
3183
function getMarkedSpanFor(spans, marker) {
3184
if (spans) for (var i = 0; i < spans.length; ++i) {
3185
var span = spans[i];
3186
if (span.marker == marker) return span;
3189
function removeMarkedSpan(spans, span) {
3190
for (var r, i = 0; i < spans.length; ++i)
3191
if (spans[i] != span) (r || (r = [])).push(spans[i]);
3194
function addMarkedSpan(line, span) {
3195
line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
3196
span.marker.lines.push(line);
3199
function markedSpansBefore(old, startCh) {
3200
if (old) for (var i = 0, nw; i < old.length; ++i) {
3201
var span = old[i], marker = span.marker;
3202
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
3203
if (startsBefore || marker.type == "bookmark" && span.from == startCh) {
3204
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
3205
(nw || (nw = [])).push({from: span.from,
3206
to: endsAfter ? null : span.to,
3213
function markedSpansAfter(old, startCh, endCh) {
3214
if (old) for (var i = 0, nw; i < old.length; ++i) {
3215
var span = old[i], marker = span.marker;
3216
var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
3217
if (endsAfter || marker.type == "bookmark" && span.from == endCh && span.from != startCh) {
3218
var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
3219
(nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
3220
to: span.to == null ? null : span.to - endCh,
3227
function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) {
3228
if (!oldFirst && !oldLast) return newText;
3229
// Get the spans that 'stick out' on both sides
3230
var first = markedSpansBefore(oldFirst, startCh);
3231
var last = markedSpansAfter(oldLast, startCh, endCh);
3233
// Next, merge those two ends
3234
var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0);
3236
// Fix up .to properties of first
3237
for (var i = 0; i < first.length; ++i) {
3238
var span = first[i];
3239
if (span.to == null) {
3240
var found = getMarkedSpanFor(last, span.marker);
3241
if (!found) span.to = startCh;
3242
else if (sameLine) span.to = found.to == null ? null : found.to + offset;
3247
// Fix up .from in last (or move them into first in case of sameLine)
3248
for (var i = 0; i < last.length; ++i) {
3250
if (span.to != null) span.to += offset;
3251
if (span.from == null) {
3252
var found = getMarkedSpanFor(first, span.marker);
3255
if (sameLine) (first || (first = [])).push(span);
3258
span.from += offset;
3259
if (sameLine) (first || (first = [])).push(span);
3264
var newMarkers = [newHL(newText[0], first)];
3266
// Fill gap with whole-line-spans
3267
var gap = newText.length - 2, gapMarkers;
3268
if (gap > 0 && first)
3269
for (var i = 0; i < first.length; ++i)
3270
if (first[i].to == null)
3271
(gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
3272
for (var i = 0; i < gap; ++i)
3273
newMarkers.push(newHL(newText[i+1], gapMarkers));
3274
newMarkers.push(newHL(lst(newText), last));
3279
function removeReadOnlyRanges(doc, from, to) {
3281
doc.iter(from.line, to.line + 1, function(line) {
3282
if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
3283
var mark = line.markedSpans[i].marker;
3284
if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
3285
(markers || (markers = [])).push(mark);
3288
if (!markers) return null;
3289
var parts = [{from: from, to: to}];
3290
for (var i = 0; i < markers.length; ++i) {
3291
var m = markers[i].find();
3292
for (var j = 0; j < parts.length; ++j) {
3294
if (!posLess(m.from, p.to) || posLess(m.to, p.from)) continue;
3295
var newParts = [j, 1];
3296
if (posLess(p.from, m.from)) newParts.push({from: p.from, to: m.from});
3297
if (posLess(m.to, p.to)) newParts.push({from: m.to, to: p.to});
3298
parts.splice.apply(parts, newParts);
3299
j += newParts.length - 1;
3305
function collapsedSpanAt(line, ch) {
3306
var sps = sawCollapsedSpans && line.markedSpans, found;
3307
if (sps) for (var sp, i = 0; i < sps.length; ++i) {
3309
if (!sp.marker.collapsed) continue;
3310
if ((sp.from == null || sp.from < ch) &&
3311
(sp.to == null || sp.to > ch) &&
3312
(!found || found.width < sp.marker.width))
3317
function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); }
3318
function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); }
3320
function lineIsHidden(line) {
3321
var sps = sawCollapsedSpans && line.markedSpans;
3322
if (sps) for (var sp, i = 0; i < sps.length; ++i) {
3324
if (!sp.marker.collapsed) continue;
3325
if (sp.from == null) return true;
3326
if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(line, sp))
3330
window.lineIsHidden = lineIsHidden;
3331
function lineIsHiddenInner(line, span) {
3332
if (span.to == null || span.marker.inclusiveRight && span.to == line.text.length)
3334
for (var sp, i = 0; i < line.markedSpans.length; ++i) {
3335
sp = line.markedSpans[i];
3336
if (sp.marker.collapsed && sp.from == span.to &&
3337
(sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
3338
lineIsHiddenInner(line, sp)) return true;
3342
// hl stands for history-line, a data structure that can be either a
3343
// string (line without markers) or a {text, markedSpans} object.
3344
function hlText(val) { return typeof val == "string" ? val : val.text; }
3345
function hlSpans(val) {
3346
if (typeof val == "string") return null;
3347
var spans = val.markedSpans, out = null;
3348
for (var i = 0; i < spans.length; ++i) {
3349
if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
3350
else if (out) out.push(spans[i]);
3352
return !out ? spans : out.length ? out : null;
3354
function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; }
3356
function detachMarkedSpans(line) {
3357
var spans = line.markedSpans;
3359
for (var i = 0; i < spans.length; ++i) {
3360
var lines = spans[i].marker.lines;
3361
var ix = indexOf(lines, line);
3362
lines.splice(ix, 1);
3364
line.markedSpans = null;
3367
function attachMarkedSpans(line, spans) {
3369
for (var i = 0; i < spans.length; ++i)
3370
var marker = spans[i].marker.lines.push(line);
3371
line.markedSpans = spans;
3374
// LINE DATA STRUCTURE
3376
// Line objects. These hold state related to a line, including
3377
// highlighting info (the styles array).
3378
function makeLine(text, markedSpans, height) {
3379
var line = {text: text, height: height};
3380
attachMarkedSpans(line, markedSpans);
3381
if (markedSpans && collapsedSpanAtStart(line)) line.height = 0;
3385
function updateLine(cm, line, text, markedSpans) {
3387
line.stateAfter = line.styles = null;
3388
if (line.order != null) line.order = null;
3389
detachMarkedSpans(line);
3390
attachMarkedSpans(line, markedSpans);
3391
var hidden = collapsedSpanAtStart(line);
3392
if (hidden) line.height = 0;
3393
else if (!line.height) line.height = textHeight(cm.display);
3394
signalLater(cm, line, "change");
3397
function cleanUpLine(line) {
3399
detachMarkedSpans(line);
3402
// Run the given mode's parser over a line, update the styles
3403
// array, which contains alternating fragments of text and CSS
3405
function highlightLine(cm, line, state) {
3406
var mode = cm.view.mode, flattenSpans = cm.options.flattenSpans;
3407
var changed = !line.styles, pos = 0, curText = "", curStyle = null;
3408
var stream = new StringStream(line.text, cm.options.tabSize), st = line.styles || (line.styles = []);
3409
if (line.text == "" && mode.blankLine) mode.blankLine(state);
3410
while (!stream.eol()) {
3411
var style = mode.token(stream, state), substr = stream.current();
3412
stream.start = stream.pos;
3413
if (!flattenSpans || curStyle != style) {
3415
changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1];
3416
st[pos++] = curText; st[pos++] = curStyle;
3418
curText = substr; curStyle = style;
3419
} else curText = curText + substr;
3420
// Give up when line is ridiculously long
3421
if (stream.pos > 5000) break;
3424
changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1];
3425
st[pos++] = curText; st[pos++] = curStyle;
3427
if (stream.pos > 5000) { st[pos++] = line.text.slice(stream.pos); st[pos++] = null; }
3428
if (pos != st.length) { st.length = pos; changed = true; }
3432
// Lightweight form of highlight -- proceed over this line and
3433
// update state, but don't save a style array.
3434
function processLine(cm, line, state) {
3435
var mode = cm.view.mode;
3436
var stream = new StringStream(line.text, cm.options.tabSize);
3437
if (line.text == "" && mode.blankLine) mode.blankLine(state);
3438
while (!stream.eol() && stream.pos <= 5000) {
3439
mode.token(stream, state);
3440
stream.start = stream.pos;
3444
// Fetch the parser token for a given character. Useful for hacks
3445
// that want to inspect the mode state (say, for completion).
3446
function getTokenAt(cm, line, state, ch) {
3447
var mode = cm.view.mode;
3448
var txt = line.text, stream = new StringStream(txt, cm.options.tabSize);
3449
while (stream.pos < ch && !stream.eol()) {
3450
stream.start = stream.pos;
3451
var style = mode.token(stream, state);
3453
return {start: stream.start,
3455
string: stream.current(),
3456
className: style || null,
3460
var styleToClassCache = {};
3461
function styleToClass(style) {
3462
if (!style) return null;
3463
return styleToClassCache[style] ||
3464
(styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-"));
3467
function lineContent(cm, realLine, measure) {
3468
var merged, line = realLine, lineBefore, sawBefore;
3469
while (merged = collapsedSpanAtStart(line)) {
3470
line = getLine(cm.view.doc, merged.find().from.line);
3471
if (!lineBefore) lineBefore = line;
3474
var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure,
3475
measure: null, addedOne: false, cm: cm};
3476
if (line.textClass) builder.pre.className = line.textClass;
3480
highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
3481
builder.measure = line == realLine && measure;
3483
builder.addToken = builder.measure ? buildTokenMeasure : buildToken;
3484
if (measure && sawBefore && line != realLine && !builder.addedOne) {
3485
measure[0] = builder.pre.appendChild(elt("span", "\u200b"));
3486
builder.addedOne = true;
3488
var next = insertLineContent(line, builder);
3489
sawBefore = line == lineBefore;
3490
if (next) line = getLine(cm.view.doc, next.to.line);
3493
if (measure && !builder.addedOne)
3494
measure[0] = builder.pre.appendChild(elt("span", "\u200b"));
3495
if (!builder.pre.firstChild && !lineIsHidden(realLine))
3496
builder.pre.appendChild(document.createTextNode("\u00a0"));
3501
var tokenSpecialChars = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g;
3502
function buildToken(builder, text, style, startStyle, endStyle) {
3504
if (!tokenSpecialChars.test(text)) {
3505
builder.col += text.length;
3506
var content = document.createTextNode(text);
3508
var content = document.createDocumentFragment(), pos = 0;
3510
tokenSpecialChars.lastIndex = pos;
3511
var m = tokenSpecialChars.exec(text);
3512
var skipped = m ? m.index - pos : text.length - pos;
3514
content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
3515
builder.col += skipped;
3520
var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
3521
content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
3522
builder.col += tabWidth;
3524
var token = elt("span", "\u2022", "cm-invalidchar");
3525
token.title = "\\u" + m[0].charCodeAt(0).toString(16);
3526
content.appendChild(token);
3531
if (style || startStyle || endStyle || builder.measure) {
3532
var fullStyle = style || "";
3533
if (startStyle) fullStyle += startStyle;
3534
if (endStyle) fullStyle += endStyle;
3535
return builder.pre.appendChild(elt("span", [content], fullStyle));
3537
builder.pre.appendChild(content);
3540
function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
3541
for (var i = 0; i < text.length; ++i) {
3542
if (i && i < text.length - 1 &&
3543
builder.cm.options.lineWrapping &&
3544
spanAffectsWrapping.test(text.slice(i - 1, i + 1)))
3545
builder.pre.appendChild(elt("wbr"));
3546
builder.measure[builder.pos++] =
3547
buildToken(builder, text.charAt(i), style,
3548
i == 0 && startStyle, i == text.length - 1 && endStyle);
3550
if (text.length) builder.addedOne = true;
3553
function buildCollapsedSpan(builder, size, widget) {
3555
if (!builder.display) widget = widget.cloneNode(true);
3556
builder.pre.appendChild(widget);
3557
if (builder.measure && size) {
3558
builder.measure[builder.pos] = widget;
3559
builder.addedOne = true;
3562
builder.pos += size;
3565
// Outputs a number of spans to make up a line, taking highlighting
3566
// and marked text into account.
3567
function insertLineContent(line, builder) {
3568
var st = line.styles, spans = line.markedSpans;
3570
for (var i = 0; i < st.length; i+=2)
3571
builder.addToken(builder, st[i], styleToClass(st[i+1]));
3575
var allText = line.text, len = allText.length;
3576
var pos = 0, i = 0, text = "", style;
3577
var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed;
3579
if (nextChange == pos) { // Update current marker set
3580
spanStyle = spanEndStyle = spanStartStyle = "";
3581
collapsed = null; nextChange = Infinity;
3582
var foundBookmark = null;
3583
for (var j = 0; j < spans.length; ++j) {
3584
var sp = spans[j], m = sp.marker;
3585
if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
3586
if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
3587
if (m.className) spanStyle += " " + m.className;
3588
if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
3589
if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
3590
if (m.collapsed && (!collapsed || collapsed.marker.width < m.width))
3592
} else if (sp.from > pos && nextChange > sp.from) {
3593
nextChange = sp.from;
3595
if (m.type == "bookmark" && sp.from == pos && m.replacedWith)
3596
foundBookmark = m.replacedWith;
3598
if (collapsed && (collapsed.from || 0) == pos) {
3599
buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
3600
collapsed.from != null && collapsed.marker.replacedWith);
3601
if (collapsed.to == null) return collapsed.marker.find();
3603
if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark);
3605
if (pos >= len) break;
3607
var upto = Math.min(len, nextChange);
3610
var end = pos + text.length;
3612
var tokenText = end > upto ? text.slice(0, upto - pos) : text;
3613
builder.addToken(builder, tokenText, style + spanStyle,
3614
spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "");
3616
if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
3618
spanStartStyle = "";
3620
text = st[i++]; style = styleToClass(st[i++]);
3625
// DOCUMENT DATA STRUCTURE
3627
function LeafChunk(lines) {
3630
for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
3631
lines[i].parent = this;
3632
height += lines[i].height;
3634
this.height = height;
3637
LeafChunk.prototype = {
3638
chunkSize: function() { return this.lines.length; },
3639
remove: function(at, n, cm) {
3640
for (var i = at, e = at + n; i < e; ++i) {
3641
var line = this.lines[i];
3642
this.height -= line.height;
3644
signalLater(cm, line, "delete");
3646
this.lines.splice(at, n);
3648
collapse: function(lines) {
3649
lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
3651
insertHeight: function(at, lines, height) {
3652
this.height += height;
3653
this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
3654
for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
3656
iterN: function(at, n, op) {
3657
for (var e = at + n; at < e; ++at)
3658
if (op(this.lines[at])) return true;
3662
function BranchChunk(children) {
3663
this.children = children;
3664
var size = 0, height = 0;
3665
for (var i = 0, e = children.length; i < e; ++i) {
3666
var ch = children[i];
3667
size += ch.chunkSize(); height += ch.height;
3671
this.height = height;
3675
BranchChunk.prototype = {
3676
chunkSize: function() { return this.size; },
3677
remove: function(at, n, callbacks) {
3679
for (var i = 0; i < this.children.length; ++i) {
3680
var child = this.children[i], sz = child.chunkSize();
3682
var rm = Math.min(n, sz - at), oldHeight = child.height;
3683
child.remove(at, rm, callbacks);
3684
this.height -= oldHeight - child.height;
3685
if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
3686
if ((n -= rm) == 0) break;
3690
if (this.size - n < 25) {
3692
this.collapse(lines);
3693
this.children = [new LeafChunk(lines)];
3694
this.children[0].parent = this;
3697
collapse: function(lines) {
3698
for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
3700
insert: function(at, lines) {
3702
for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
3703
this.insertHeight(at, lines, height);
3705
insertHeight: function(at, lines, height) {
3706
this.size += lines.length;
3707
this.height += height;
3708
for (var i = 0, e = this.children.length; i < e; ++i) {
3709
var child = this.children[i], sz = child.chunkSize();
3711
child.insertHeight(at, lines, height);
3712
if (child.lines && child.lines.length > 50) {
3713
while (child.lines.length > 50) {
3714
var spilled = child.lines.splice(child.lines.length - 25, 25);
3715
var newleaf = new LeafChunk(spilled);
3716
child.height -= newleaf.height;
3717
this.children.splice(i + 1, 0, newleaf);
3718
newleaf.parent = this;
3727
maybeSpill: function() {
3728
if (this.children.length <= 10) return;
3731
var spilled = me.children.splice(me.children.length - 5, 5);
3732
var sibling = new BranchChunk(spilled);
3733
if (!me.parent) { // Become the parent node
3734
var copy = new BranchChunk(me.children);
3736
me.children = [copy, sibling];
3739
me.size -= sibling.size;
3740
me.height -= sibling.height;
3741
var myIndex = indexOf(me.parent.children, me);
3742
me.parent.children.splice(myIndex + 1, 0, sibling);
3744
sibling.parent = me.parent;
3745
} while (me.children.length > 10);
3746
me.parent.maybeSpill();
3748
iter: function(from, to, op) { this.iterN(from, to - from, op); },
3749
iterN: function(at, n, op) {
3750
for (var i = 0, e = this.children.length; i < e; ++i) {
3751
var child = this.children[i], sz = child.chunkSize();
3753
var used = Math.min(n, sz - at);
3754
if (child.iterN(at, used, op)) return true;
3755
if ((n -= used) == 0) break;
3764
function lineDoc(line) {
3765
for (var d = line.parent; d && d.parent; d = d.parent) {}
3769
function getLine(chunk, n) {
3770
while (!chunk.lines) {
3771
for (var i = 0;; ++i) {
3772
var child = chunk.children[i], sz = child.chunkSize();
3773
if (n < sz) { chunk = child; break; }
3777
return chunk.lines[n];
3780
function updateLineHeight(line, height) {
3781
var diff = height - line.height;
3782
for (var n = line; n; n = n.parent) n.height += diff;
3785
function lineNo(line) {
3786
if (line.parent == null) return null;
3787
var cur = line.parent, no = indexOf(cur.lines, line);
3788
for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
3789
for (var i = 0, e = chunk.children.length; ; ++i) {
3790
if (chunk.children[i] == cur) break;
3791
no += chunk.children[i].chunkSize();
3797
function lineAtHeight(chunk, h) {
3800
for (var i = 0, e = chunk.children.length; i < e; ++i) {
3801
var child = chunk.children[i], ch = child.height;
3802
if (h < ch) { chunk = child; continue outer; }
3804
n += child.chunkSize();
3807
} while (!chunk.lines);
3808
for (var i = 0, e = chunk.lines.length; i < e; ++i) {
3809
var line = chunk.lines[i], lh = line.height;
3816
function heightAtLine(cm, lineObj) {
3818
while (merged = collapsedSpanAtStart(lineObj))
3819
lineObj = getLine(cm.view.doc, merged.find().from.line);
3821
var h = 0, chunk = lineObj.parent;
3822
for (var i = 0; i < chunk.lines.length; ++i) {
3823
var line = chunk.lines[i];
3824
if (line == lineObj) break;
3825
else h += line.height;
3827
for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
3828
for (var i = 0; i < p.children.length; ++i) {
3829
var cur = p.children[i];
3830
if (cur == chunk) break;
3831
else h += cur.height;
3837
function getOrder(line) {
3838
var order = line.order;
3839
if (order == null) order = line.order = bidiOrdering(line.text);
3845
// The history object 'chunks' changes that are made close together
3846
// and at almost the same time into bigger undoable units.
3847
function makeHistory() {
3848
return {time: 0, done: [], undone: [],
3849
compound: 0, closed: false, dirtyCounter: 0};
3852
function addChange(history, start, added, old) {
3853
history.undone.length = 0;
3854
var time = +new Date, cur = lst(history.done), last = cur && lst(cur);
3855
var dtime = time - history.time;
3857
function updateDirty() {
3858
if (history.dirtyCounter < 0) {
3859
// The user has made a change after undoing past the last clean state.
3860
// We can never get back to a clean state now until markClean() is called.
3861
history.dirtyCounter = NaN;
3863
history.dirtyCounter++;
3866
if (cur && !history.closed && history.compound) {
3868
cur.push({start: start, added: added, old: old});
3869
} else if (dtime > 400 || !last || history.closed ||
3870
last.start > start + old.length || last.start + last.added < start) {
3872
history.done.push([{start: start, added: added, old: old}]);
3873
history.closed = false;
3875
var startBefore = Math.max(0, last.start - start),
3876
endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
3877
for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
3878
for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
3879
if (startBefore) last.start = start;
3880
last.added += added - (old.length - startBefore - endAfter);
3882
history.time = time;
3885
function compoundChange(cm, f) {
3886
var hist = cm.view.history;
3887
if (!hist.compound++) hist.closed = true;
3889
finally { if (!--hist.compound) hist.closed = true; }
3894
function stopMethod() {e_stop(this);}
3895
// Ensure an event has a stop method.
3896
function addStop(event) {
3897
if (!event.stop) event.stop = stopMethod;
3901
function e_preventDefault(e) {
3902
if (e.preventDefault) e.preventDefault();
3903
else e.returnValue = false;
3905
function e_stopPropagation(e) {
3906
if (e.stopPropagation) e.stopPropagation();
3907
else e.cancelBubble = true;
3909
function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
3910
CodeMirror.e_stop = e_stop;
3911
CodeMirror.e_preventDefault = e_preventDefault;
3912
CodeMirror.e_stopPropagation = e_stopPropagation;
3914
function e_target(e) {return e.target || e.srcElement;}
3915
function e_button(e) {
3918
if (e.button & 1) b = 1;
3919
else if (e.button & 2) b = 3;
3920
else if (e.button & 4) b = 2;
3922
if (mac && e.ctrlKey && b == 1) b = 3;
3926
// Allow 3rd-party code to override event properties by adding an override
3927
// object to an event object.
3928
function e_prop(e, prop) {
3929
var overridden = e.override && e.override.hasOwnProperty(prop);
3930
return overridden ? e.override[prop] : e[prop];
3935
function on(emitter, type, f) {
3936
if (emitter.addEventListener)
3937
emitter.addEventListener(type, f, false);
3938
else if (emitter.attachEvent)
3939
emitter.attachEvent("on" + type, f);
3941
var map = emitter._handlers || (emitter._handlers = {});
3942
var arr = map[type] || (map[type] = []);
3947
function off(emitter, type, f) {
3948
if (emitter.removeEventListener)
3949
emitter.removeEventListener(type, f, false);
3950
else if (emitter.detachEvent)
3951
emitter.detachEvent("on" + type, f);
3953
var arr = emitter._handlers && emitter._handlers[type];
3955
for (var i = 0; i < arr.length; ++i)
3956
if (arr[i] == f) { arr.splice(i, 1); break; }
3960
function signal(emitter, type /*, values...*/) {
3961
var arr = emitter._handlers && emitter._handlers[type];
3963
var args = Array.prototype.slice.call(arguments, 2);
3964
for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
3967
function signalLater(cm, emitter, type /*, values...*/) {
3968
var arr = emitter._handlers && emitter._handlers[type];
3970
var args = Array.prototype.slice.call(arguments, 3), flist = cm.curOp && cm.curOp.delayedCallbacks;
3971
function bnd(f) {return function(){f.apply(null, args);};};
3972
for (var i = 0; i < arr.length; ++i)
3973
if (flist) flist.push(bnd(arr[i]));
3974
else arr[i].apply(null, args);
3977
function hasHandler(emitter, type) {
3978
var arr = emitter._handlers && emitter._handlers[type];
3979
return arr && arr.length > 0;
3982
CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;
3986
// Number of pixels added to scroller and sizer to hide scrollbar
3987
var scrollerCutOff = 30;
3989
// Returned or thrown by various protocols to signal 'I'm not
3991
var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
3993
function Delayed() {this.id = null;}
3994
Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
3996
// Counts the column offset in a string, taking tabs into account.
3997
// Used mostly to find indentation.
3998
function countColumn(string, end, tabSize) {
4000
end = string.search(/[^\s\u00a0]/);
4001
if (end == -1) end = string.length;
4003
for (var i = 0, n = 0; i < end; ++i) {
4004
if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
4009
CodeMirror.countColumn = countColumn;
4011
var spaceStrs = [""];
4012
function spaceStr(n) {
4013
while (spaceStrs.length <= n)
4014
spaceStrs.push(lst(spaceStrs) + " ");
4015
return spaceStrs[n];
4018
function lst(arr) { return arr[arr.length-1]; }
4020
function selectInput(node) {
4021
if (ios) { // Mobile Safari apparently has a bug where select() is broken.
4022
node.selectionStart = 0;
4023
node.selectionEnd = node.value.length;
4024
} else node.select();
4027
// Used to position the cursor after an undo/redo by finding the
4028
// last edited character.
4029
function editEnd(from, to) {
4031
if (!from) return to.length;
4032
for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
4033
if (from.charAt(i) != to.charAt(j)) break;
4037
function indexOf(collection, elt) {
4038
if (collection.indexOf) return collection.indexOf(elt);
4039
for (var i = 0, e = collection.length; i < e; ++i)
4040
if (collection[i] == elt) return i;
4044
function emptyArray(size) {
4045
for (var a = [], i = 0; i < size; ++i) a.push(undefined);
4050
var args = Array.prototype.slice.call(arguments, 1);
4051
return function(){return f.apply(null, args);};
4054
var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/;
4055
function isWordChar(ch) {
4056
return /\w/.test(ch) || ch > "\x80" &&
4057
(ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
4060
function isEmpty(obj) {
4062
for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) ++c;
4066
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]/;
4070
function elt(tag, content, className, style) {
4071
var e = document.createElement(tag);
4072
if (className) e.className = className;
4073
if (style) e.style.cssText = style;
4074
if (typeof content == "string") setTextContent(e, content);
4075
else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
4079
function removeChildren(e) {
4084
function removeChildrenAndAdd(parent, e) {
4085
return removeChildren(parent).appendChild(e);
4088
function setTextContent(e, str) {
4091
e.appendChild(document.createTextNode(str));
4092
} else e.textContent = str;
4095
// FEATURE DETECTION
4097
// Detect drag-and-drop
4098
var dragAndDrop = function() {
4099
// There is *some* kind of drag-and-drop support in IE6-8, but I
4100
// couldn't get it to work yet.
4101
if (ie_lt9) return false;
4102
var div = elt('div');
4103
return "draggable" in div || "dragDrop" in div;
4106
// Feature-detect whether newlines in textareas are converted to \r\n
4107
var lineSep = function () {
4108
var te = elt("textarea");
4109
te.value = "foo\nbar";
4110
if (te.value.indexOf("\r") > -1) return "\r\n";
4114
// For a reason I have yet to figure out, some browsers disallow
4115
// word wrapping between certain characters *only* if a new inline
4116
// element is started between them. This makes it hard to reliably
4117
// measure the position of things, since that requires inserting an
4118
// extra span. This terribly fragile set of regexps matches the
4119
// character combinations that suffer from this phenomenon on the
4120
// various browsers.
4121
var spanAffectsWrapping = /^$/; // Won't match any two-character string
4122
if (gecko) spanAffectsWrapping = /$'/;
4123
else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
4124
else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
4126
var knownScrollbarWidth;
4127
function scrollbarWidth(measure) {
4128
if (knownScrollbarWidth != null) return knownScrollbarWidth;
4129
var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
4130
removeChildrenAndAdd(measure, test);
4131
if (test.offsetWidth)
4132
knownScrollbarWidth = test.offsetHeight - test.clientHeight;
4133
return knownScrollbarWidth || 0;
4136
// See if "".split is the broken IE version, if so, provide an
4137
// alternative way to split lines.
4138
var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
4139
var pos = 0, result = [], l = string.length;
4141
var nl = string.indexOf("\n", pos);
4142
if (nl == -1) nl = string.length;
4143
var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
4144
var rt = line.indexOf("\r");
4146
result.push(line.slice(0, rt));
4154
} : function(string){return string.split(/\r\n?|\n/);};
4155
CodeMirror.splitLines = splitLines;
4157
var hasSelection = window.getSelection ? function(te) {
4158
try { return te.selectionStart != te.selectionEnd; }
4159
catch(e) { return false; }
4161
try {var range = te.ownerDocument.selection.createRange();}
4163
if (!range || range.parentElement() != te) return false;
4164
return range.compareEndPoints("StartToEnd", range) != 0;
4167
var hasCopyEvent = (function() {
4169
if ("oncopy" in e) return true;
4170
e.setAttribute("oncopy", "return;");
4171
return typeof e.oncopy == 'function';
4176
var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
4177
19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
4178
36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
4179
46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete",
4180
186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
4181
221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home",
4182
63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"};
4183
CodeMirror.keyNames = keyNames;
4186
for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
4188
for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
4190
for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
4195
function iterateBidiSections(order, from, to, f) {
4196
if (!order) return f(from, to, "ltr");
4197
for (var i = 0; i < order.length; ++i) {
4198
var part = order[i];
4199
if (part.from < to && part.to > from)
4200
f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
4204
function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
4205
function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
4207
function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
4208
function lineRight(line) {
4209
var order = getOrder(line);
4210
if (!order) return line.text.length;
4211
return bidiRight(lst(order));
4214
function lineStart(cm, lineNo) {
4216
while (merged = collapsedSpanAtStart(line = getLine(cm.view.doc, lineNo)))
4217
lineNo = merged.find().from.line;
4218
var order = getOrder(line);
4219
var ch = !order ? 0 : order[0].level % 2 ? lineRight(line) : lineLeft(line);
4220
return {line: lineNo, ch: ch};
4222
function lineEnd(cm, lineNo) {
4224
while (merged = collapsedSpanAtEnd(line = getLine(cm.view.doc, lineNo)))
4225
lineNo = merged.find().to.line;
4226
var order = getOrder(line);
4227
var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
4228
return {line: lineNo, ch: ch};
4231
// This is somewhat involved. It is needed in order to move
4232
// 'visually' through bi-directional text -- i.e., pressing left
4233
// should make the cursor go left, even when in RTL text. The
4234
// tricky part is the 'jumps', where RTL and LTR text touch each
4235
// other. This often requires the cursor offset to move more than
4236
// one unit, in order to visually move one unit.
4237
function moveVisually(line, start, dir, byUnit) {
4238
var bidi = getOrder(line);
4239
if (!bidi) return moveLogically(line, start, dir, byUnit);
4240
var moveOneUnit = byUnit ? function(pos, dir) {
4242
while (pos > 0 && isExtendingChar.test(line.text.charAt(pos)));
4244
} : function(pos, dir) { return pos + dir; };
4245
var linedir = bidi[0].level;
4246
for (var i = 0; i < bidi.length; ++i) {
4247
var part = bidi[i], sticky = part.level % 2 == linedir;
4248
if ((part.from < start && part.to > start) ||
4249
(sticky && (part.from == start || part.to == start))) break;
4251
var target = moveOneUnit(start, part.level % 2 ? -dir : dir);
4253
while (target != null) {
4254
if (part.level % 2 == linedir) {
4255
if (target < part.from || target > part.to) {
4256
part = bidi[i += dir];
4257
target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1));
4260
if (target == bidiLeft(part)) {
4262
target = part && bidiRight(part);
4263
} else if (target == bidiRight(part)) {
4265
target = part && bidiLeft(part);
4270
return target < 0 || target > line.text.length ? null : target;
4273
function moveLogically(line, start, dir, byUnit) {
4274
var target = start + dir;
4275
if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir;
4276
return target < 0 || target > line.text.length ? null : target;
4279
// Bidirectional ordering algorithm
4280
// See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
4281
// that this (partially) implements.
4283
// One-char codes used for character types:
4284
// L (L): Left-to-Right
4285
// R (R): Right-to-Left
4286
// r (AL): Right-to-Left Arabic
4287
// 1 (EN): European Number
4288
// + (ES): European Number Separator
4289
// % (ET): European Number Terminator
4290
// n (AN): Arabic Number
4291
// , (CS): Common Number Separator
4292
// m (NSM): Non-Spacing Mark
4293
// b (BN): Boundary Neutral
4294
// s (B): Paragraph Separator
4295
// t (S): Segment Separator
4296
// w (WS): Whitespace
4297
// N (ON): Other Neutrals
4299
// Returns null if characters are ordered as they appear
4300
// (left-to-right), or an array of sections ({from, to, level}
4301
// objects) in the order in which they occur visually.
4302
var bidiOrdering = (function() {
4303
// Character types for codepoints 0 to 0xff
4304
var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
4305
// Character types for codepoints 0x600 to 0x6ff
4306
var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
4307
function charType(code) {
4309
if (code <= 0xff) return lowTypes.charAt(code);
4310
else if (0x590 <= code && code <= 0x5f4) return "R";
4311
else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
4312
else if (0x700 <= code && code <= 0x8ac) return "r";
4316
var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
4317
var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
4319
return function charOrdering(str) {
4320
if (!bidiRE.test(str)) return false;
4321
var len = str.length, types = [], startType = null;
4322
for (var i = 0, type; i < len; ++i) {
4323
types.push(type = charType(str.charCodeAt(i)));
4324
if (startType == null) {
4325
if (type == "L") startType = "L";
4326
else if (type == "R" || type == "r") startType = "R";
4329
if (startType == null) startType = "L";
4331
// W1. Examine each non-spacing mark (NSM) in the level run, and
4332
// change the type of the NSM to the type of the previous
4333
// character. If the NSM is at the start of the level run, it will
4334
// get the type of sor.
4335
for (var i = 0, prev = startType; i < len; ++i) {
4336
var type = types[i];
4337
if (type == "m") types[i] = prev;
4341
// W2. Search backwards from each instance of a European number
4342
// until the first strong type (R, L, AL, or sor) is found. If an
4343
// AL is found, change the type of the European number to Arabic
4345
// W3. Change all ALs to R.
4346
for (var i = 0, cur = startType; i < len; ++i) {
4347
var type = types[i];
4348
if (type == "1" && cur == "r") types[i] = "n";
4349
else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
4352
// W4. A single European separator between two European numbers
4353
// changes to a European number. A single common separator between
4354
// two numbers of the same type changes to that type.
4355
for (var i = 1, prev = types[0]; i < len - 1; ++i) {
4356
var type = types[i];
4357
if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
4358
else if (type == "," && prev == types[i+1] &&
4359
(prev == "1" || prev == "n")) types[i] = prev;
4363
// W5. A sequence of European terminators adjacent to European
4364
// numbers changes to all European numbers.
4365
// W6. Otherwise, separators and terminators change to Other
4367
for (var i = 0; i < len; ++i) {
4368
var type = types[i];
4369
if (type == ",") types[i] = "N";
4370
else if (type == "%") {
4371
for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
4372
var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N";
4373
for (var j = i; j < end; ++j) types[j] = replace;
4378
// W7. Search backwards from each instance of a European number
4379
// until the first strong type (R, L, or sor) is found. If an L is
4380
// found, then change the type of the European number to L.
4381
for (var i = 0, cur = startType; i < len; ++i) {
4382
var type = types[i];
4383
if (cur == "L" && type == "1") types[i] = "L";
4384
else if (isStrong.test(type)) cur = type;
4387
// N1. A sequence of neutrals takes the direction of the
4388
// surrounding strong text if the text on both sides has the same
4389
// direction. European and Arabic numbers act as if they were R in
4390
// terms of their influence on neutrals. Start-of-level-run (sor)
4391
// and end-of-level-run (eor) are used at level run boundaries.
4392
// N2. Any remaining neutrals take the embedding direction.
4393
for (var i = 0; i < len; ++i) {
4394
if (isNeutral.test(types[i])) {
4395
for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
4396
var before = (i ? types[i-1] : startType) == "L";
4397
var after = (end < len - 1 ? types[end] : startType) == "L";
4398
var replace = before || after ? "L" : "R";
4399
for (var j = i; j < end; ++j) types[j] = replace;
4404
// Here we depart from the documented algorithm, in order to avoid
4405
// building up an actual levels array. Since there are only three
4406
// levels (0, 1, 2) in an implementation that doesn't take
4407
// explicit embedding into account, we can build up the order on
4408
// the fly, without following the level-based algorithm.
4410
for (var i = 0; i < len;) {
4411
if (countsAsLeft.test(types[i])) {
4413
for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
4414
order.push({from: start, to: i, level: 0});
4416
var pos = i, at = order.length;
4417
for (++i; i < len && types[i] != "L"; ++i) {}
4418
for (var j = pos; j < i;) {
4419
if (countsAsNum.test(types[j])) {
4420
if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});
4422
for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
4423
order.splice(at, 0, {from: nstart, to: j, level: 2});
4427
if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
4430
if (order[0].level == 1 && (m = str.match(/^\s+/))) {
4431
order[0].from = m[0].length;
4432
order.unshift({from: 0, to: m[0].length, level: 0});
4434
if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
4435
lst(order).to -= m[0].length;
4436
order.push({from: len - m[0].length, to: len, level: 0});
4438
if (order[0].level != lst(order).level)
4439
order.push({from: len, to: len, level: order[0].level});
4447
CodeMirror.version = "3.0 B2";