--- /dev/null
+// CodeMirror is the only global var we claim
+window.CodeMirror = (function() {
+ "use strict";
+
+ // BROWSER SNIFFING
+
+ // Crude, but necessary to handle a number of hard-to-feature-detect
+ // bugs and behavior differences.
+ var gecko = /gecko\/\d/i.test(navigator.userAgent);
+ // IE11 currently doesn't count as 'ie', since it has almost none of
+ // the same bugs as earlier versions. Use ie_gt10 to handle
+ // incompatibilities in that version.
+ var old_ie = /MSIE \d/.test(navigator.userAgent);
+ var ie_lt8 = old_ie && (document.documentMode == null || document.documentMode < 8);
+ var ie_lt9 = old_ie && (document.documentMode == null || document.documentMode < 9);
+ var ie_gt10 = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent);
+ var ie = old_ie || ie_gt10;
+ var webkit = /WebKit\//.test(navigator.userAgent);
+ var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
+ var chrome = /Chrome\//.test(navigator.userAgent);
+ var opera = /Opera\//.test(navigator.userAgent);
+ var safari = /Apple Computer/.test(navigator.vendor);
+ var khtml = /KHTML\//.test(navigator.userAgent);
+ var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
+ var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
+ var phantom = /PhantomJS/.test(navigator.userAgent);
+
+ var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
+ // This is woefully incomplete. Suggestions for alternative methods welcome.
+ var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
+ var mac = ios || /Mac/.test(navigator.platform);
+ var windows = /win/i.test(navigator.platform);
+
+ var opera_version = opera && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
+ if (opera_version) opera_version = Number(opera_version[1]);
+ if (opera_version && opera_version >= 15) { opera = false; webkit = true; }
+ // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
+ var flipCtrlCmd = mac && (qtwebkit || opera && (opera_version == null || opera_version < 12.11));
+ var captureMiddleClick = gecko || (ie && !ie_lt9);
+
+ // Optimize some code when these features are not used
+ var sawReadOnlySpans = false, sawCollapsedSpans = false;
+
+ // CONSTRUCTOR
+
+ function CodeMirror(place, options) {
+ if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
+
+ this.options = options = options || {};
+ // Determine effective options based on given values and defaults.
+ for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
+ options[opt] = defaults[opt];
+ setGuttersForLineNumbers(options);
+
+ var docStart = typeof options.value == "string" ? 0 : options.value.first;
+ var display = this.display = makeDisplay(place, docStart);
+ display.wrapper.CodeMirror = this;
+ updateGutters(this);
+ if (options.autofocus && !mobile) focusInput(this);
+
+ this.state = {keyMaps: [],
+ overlays: [],
+ modeGen: 0,
+ overwrite: false, focused: false,
+ suppressEdits: false,
+ pasteIncoming: false, cutIncoming: false,
+ draggingText: false,
+ highlight: new Delayed()};
+
+ themeChanged(this);
+ if (options.lineWrapping)
+ this.display.wrapper.className += " CodeMirror-wrap";
+
+ var doc = options.value;
+ if (typeof doc == "string") doc = new Doc(options.value, options.mode);
+ operation(this, attachDoc)(this, doc);
+
+ // Override magic textarea content restore that IE sometimes does
+ // on our hidden textarea on reload
+ if (old_ie) setTimeout(bind(resetInput, this, true), 20);
+
+ registerEventHandlers(this);
+ // IE throws unspecified error in certain cases, when
+ // trying to access activeElement before onload
+ var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
+ if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20);
+ else onBlur(this);
+
+ operation(this, function() {
+ for (var opt in optionHandlers)
+ if (optionHandlers.propertyIsEnumerable(opt))
+ optionHandlers[opt](this, options[opt], Init);
+ for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
+ })();
+ }
+
+ // DISPLAY CONSTRUCTOR
+
+ function makeDisplay(place, docStart) {
+ var d = {};
+
+ var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none; font-size: 4px;");
+ if (webkit) input.style.width = "1000px";
+ else input.setAttribute("wrap", "off");
+ // if border: 0; -- iOS fails to open keyboard (issue #1287)
+ if (ios) input.style.border = "1px solid black";
+ input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false");
+
+ // Wraps and hides input textarea
+ d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
+ // The actual fake scrollbars.
+ d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
+ d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
+ d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
+ d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
+ // DIVs containing the selection and the actual code
+ d.lineDiv = elt("div", null, "CodeMirror-code");
+ d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
+ // Blinky cursor, and element used to ensure cursor fits at the end of a line
+ d.cursor = elt("div", "\u00a0", "CodeMirror-cursor");
+ // Secondary cursor, shown when on a 'jump' in bi-directional text
+ d.otherCursor = elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
+ // Used to measure text size
+ d.measure = elt("div", null, "CodeMirror-measure");
+ // Wraps everything that needs to exist inside the vertically-padded coordinate system
+ d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
+ null, "position: relative; outline: none");
+ // Moved around its parent to cover visible view
+ d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
+ // Set to the height of the text, causes scrolling
+ d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
+ // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
+ d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
+ // Will contain the gutters, if any
+ d.gutters = elt("div", null, "CodeMirror-gutters");
+ d.lineGutter = null;
+ // Provides scrolling
+ d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
+ d.scroller.setAttribute("tabIndex", "-1");
+ // The element in which the editor lives.
+ d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
+ d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
+ // Work around IE7 z-index bug
+ if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
+ if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);
+
+ // Needed to hide big blue blinking cursor on Mobile Safari
+ if (ios) input.style.width = "0px";
+ if (!webkit) d.scroller.draggable = true;
+ // Needed to handle Tab key in KHTML
+ if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
+ // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
+ else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";
+
+ // Current visible range (may be bigger than the view window).
+ d.viewOffset = d.lastSizeC = 0;
+ d.showingFrom = d.showingTo = docStart;
+
+ // Used to only resize the line number gutter when necessary (when
+ // the amount of lines crosses a boundary that makes its width change)
+ d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
+ // See readInput and resetInput
+ d.prevInput = "";
+ // Set to true when a non-horizontal-scrolling widget is added. As
+ // an optimization, widget aligning is skipped when d is false.
+ d.alignWidgets = false;
+ // Flag that indicates whether we currently expect input to appear
+ // (after some event like 'keypress' or 'input') and are polling
+ // intensively.
+ d.pollingFast = false;
+ // Self-resetting timeout for the poller
+ d.poll = new Delayed();
+
+ d.cachedCharWidth = d.cachedTextHeight = null;
+ d.measureLineCache = [];
+ d.measureLineCachePos = 0;
+
+ // Tracks when resetInput has punted to just putting a short
+ // string instead of the (large) selection.
+ d.inaccurateSelection = false;
+
+ // Tracks the maximum line length so that the horizontal scrollbar
+ // can be kept static when scrolling.
+ d.maxLine = null;
+ d.maxLineLength = 0;
+ d.maxLineChanged = false;
+
+ // Used for measuring wheel scrolling granularity
+ d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
+
+ return d;
+ }
+
+ // STATE UPDATES
+
+ // Used to get the editor into a consistent state again when options change.
+
+ function loadMode(cm) {
+ cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
+ resetModeState(cm);
+ }
+
+ function resetModeState(cm) {
+ cm.doc.iter(function(line) {
+ if (line.stateAfter) line.stateAfter = null;
+ if (line.styles) line.styles = null;
+ });
+ cm.doc.frontier = cm.doc.first;
+ startWorker(cm, 100);
+ cm.state.modeGen++;
+ if (cm.curOp) regChange(cm);
+ }
+
+ function wrappingChanged(cm) {
+ if (cm.options.lineWrapping) {
+ cm.display.wrapper.className += " CodeMirror-wrap";
+ cm.display.sizer.style.minWidth = "";
+ } else {
+ cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
+ computeMaxLength(cm);
+ }
+ estimateLineHeights(cm);
+ regChange(cm);
+ clearCaches(cm);
+ setTimeout(function(){updateScrollbars(cm);}, 100);
+ }
+
+ function estimateHeight(cm) {
+ var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
+ var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
+ return function(line) {
+ if (lineIsHidden(cm.doc, line))
+ return 0;
+ else if (wrapping)
+ return (Math.ceil(line.text.length / perLine) || 1) * th;
+ else
+ return th;
+ };
+ }
+
+ function estimateLineHeights(cm) {
+ var doc = cm.doc, est = estimateHeight(cm);
+ doc.iter(function(line) {
+ var estHeight = est(line);
+ if (estHeight != line.height) updateLineHeight(line, estHeight);
+ });
+ }
+
+ function keyMapChanged(cm) {
+ var map = keyMap[cm.options.keyMap], style = map.style;
+ cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
+ (style ? " cm-keymap-" + style : "");
+ }
+
+ function themeChanged(cm) {
+ cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
+ cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+ clearCaches(cm);
+ }
+
+ function guttersChanged(cm) {
+ updateGutters(cm);
+ regChange(cm);
+ setTimeout(function(){alignHorizontally(cm);}, 20);
+ }
+
+ function updateGutters(cm) {
+ var gutters = cm.display.gutters, specs = cm.options.gutters;
+ removeChildren(gutters);
+ for (var i = 0; i < specs.length; ++i) {
+ var gutterClass = specs[i];
+ var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
+ if (gutterClass == "CodeMirror-linenumbers") {
+ cm.display.lineGutter = gElt;
+ gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
+ }
+ }
+ gutters.style.display = i ? "" : "none";
+ }
+
+ function lineLength(doc, line) {
+ if (line.height == 0) return 0;
+ var len = line.text.length, merged, cur = line;
+ while (merged = collapsedSpanAtStart(cur)) {
+ var found = merged.find();
+ cur = getLine(doc, found.from.line);
+ len += found.from.ch - found.to.ch;
+ }
+ cur = line;
+ while (merged = collapsedSpanAtEnd(cur)) {
+ var found = merged.find();
+ len -= cur.text.length - found.from.ch;
+ cur = getLine(doc, found.to.line);
+ len += cur.text.length - found.to.ch;
+ }
+ return len;
+ }
+
+ function computeMaxLength(cm) {
+ var d = cm.display, doc = cm.doc;
+ d.maxLine = getLine(doc, doc.first);
+ d.maxLineLength = lineLength(doc, d.maxLine);
+ d.maxLineChanged = true;
+ doc.iter(function(line) {
+ var len = lineLength(doc, line);
+ if (len > d.maxLineLength) {
+ d.maxLineLength = len;
+ d.maxLine = line;
+ }
+ });
+ }
+
+ // Make sure the gutters options contains the element
+ // "CodeMirror-linenumbers" when the lineNumbers option is true.
+ function setGuttersForLineNumbers(options) {
+ var found = indexOf(options.gutters, "CodeMirror-linenumbers");
+ if (found == -1 && options.lineNumbers) {
+ options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
+ } else if (found > -1 && !options.lineNumbers) {
+ options.gutters = options.gutters.slice(0);
+ options.gutters.splice(found, 1);
+ }
+ }
+
+ // SCROLLBARS
+
+ // Re-synchronize the fake scrollbars with the actual size of the
+ // content. Optionally force a scrollTop.
+ function updateScrollbars(cm) {
+ var d = cm.display, docHeight = cm.doc.height;
+ var totalHeight = docHeight + paddingVert(d);
+ d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px";
+ d.gutters.style.height = Math.max(totalHeight, d.scroller.clientHeight - scrollerCutOff) + "px";
+ var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight);
+ var needsH = d.scroller.scrollWidth > (d.scroller.clientWidth + 1);
+ var needsV = scrollHeight > (d.scroller.clientHeight + 1);
+ if (needsV) {
+ d.scrollbarV.style.display = "block";
+ d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
+ // A bug in IE8 can cause this value to be negative, so guard it.
+ d.scrollbarV.firstChild.style.height =
+ Math.max(0, scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
+ } else {
+ d.scrollbarV.style.display = "";
+ d.scrollbarV.firstChild.style.height = "0";
+ }
+ if (needsH) {
+ d.scrollbarH.style.display = "block";
+ d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
+ d.scrollbarH.firstChild.style.width =
+ (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
+ } else {
+ d.scrollbarH.style.display = "";
+ d.scrollbarH.firstChild.style.width = "0";
+ }
+ if (needsH && needsV) {
+ d.scrollbarFiller.style.display = "block";
+ d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
+ } else d.scrollbarFiller.style.display = "";
+ if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
+ d.gutterFiller.style.display = "block";
+ d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px";
+ d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
+ } else d.gutterFiller.style.display = "";
+
+ if (mac_geLion && scrollbarWidth(d.measure) === 0) {
+ d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
+ d.scrollbarV.style.pointerEvents = d.scrollbarH.style.pointerEvents = "none";
+ }
+ }
+
+ function visibleLines(display, doc, viewPort) {
+ var top = display.scroller.scrollTop, height = display.wrapper.clientHeight;
+ if (typeof viewPort == "number") top = viewPort;
+ else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
+ top = Math.floor(top - paddingTop(display));
+ var bottom = Math.ceil(top + height);
+ return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
+ }
+
+ // LINE NUMBERS
+
+ function alignHorizontally(cm) {
+ var display = cm.display;
+ if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
+ var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
+ var gutterW = display.gutters.offsetWidth, l = comp + "px";
+ for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
+ for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
+ }
+ if (cm.options.fixedGutter)
+ display.gutters.style.left = (comp + gutterW) + "px";
+ }
+
+ function maybeUpdateLineNumberWidth(cm) {
+ if (!cm.options.lineNumbers) return false;
+ var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
+ if (last.length != display.lineNumChars) {
+ var test = display.measure.appendChild(elt("div", [elt("div", last)],
+ "CodeMirror-linenumber CodeMirror-gutter-elt"));
+ var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
+ display.lineGutter.style.width = "";
+ display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
+ display.lineNumWidth = display.lineNumInnerWidth + padding;
+ display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
+ display.lineGutter.style.width = display.lineNumWidth + "px";
+ return true;
+ }
+ return false;
+ }
+
+ function lineNumberFor(options, i) {
+ return String(options.lineNumberFormatter(i + options.firstLineNumber));
+ }
+ function compensateForHScroll(display) {
+ return getRect(display.scroller).left - getRect(display.sizer).left;
+ }
+
+ // DISPLAY DRAWING
+
+ function updateDisplay(cm, changes, viewPort, forced) {
+ var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo, updated;
+ var visible = visibleLines(cm.display, cm.doc, viewPort);
+ for (var first = true;; first = false) {
+ var oldWidth = cm.display.scroller.clientWidth;
+ if (!updateDisplayInner(cm, changes, visible, forced)) break;
+ updated = true;
+ changes = [];
+ updateSelection(cm);
+ updateScrollbars(cm);
+ if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
+ forced = true;
+ continue;
+ }
+ forced = false;
+
+ // Clip forced viewport to actual scrollable area
+ if (viewPort)
+ viewPort = Math.min(cm.display.scroller.scrollHeight - cm.display.scroller.clientHeight,
+ typeof viewPort == "number" ? viewPort : viewPort.top);
+ visible = visibleLines(cm.display, cm.doc, viewPort);
+ if (visible.from >= cm.display.showingFrom && visible.to <= cm.display.showingTo)
+ break;
+ }
+
+ if (updated) {
+ signalLater(cm, "update", cm);
+ if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
+ signalLater(cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
+ }
+ return updated;
+ }
+
+ // Uses a set of changes plus the current scroll position to
+ // determine which DOM updates have to be made, and makes the
+ // updates.
+ function updateDisplayInner(cm, changes, visible, forced) {
+ var display = cm.display, doc = cm.doc;
+ if (!display.wrapper.offsetWidth) {
+ display.showingFrom = display.showingTo = doc.first;
+ display.viewOffset = 0;
+ return;
+ }
+
+ // Bail out if the visible area is already rendered and nothing changed.
+ if (!forced && changes.length == 0 &&
+ visible.from > display.showingFrom && visible.to < display.showingTo)
+ return;
+
+ if (maybeUpdateLineNumberWidth(cm))
+ changes = [{from: doc.first, to: doc.first + doc.size}];
+ var gutterW = display.sizer.style.marginLeft = display.gutters.offsetWidth + "px";
+ display.scrollbarH.style.left = cm.options.fixedGutter ? gutterW : "0";
+
+ // Used to determine which lines need their line numbers updated
+ var positionsChangedFrom = Infinity;
+ if (cm.options.lineNumbers)
+ for (var i = 0; i < changes.length; ++i)
+ if (changes[i].diff && changes[i].from < positionsChangedFrom) { positionsChangedFrom = changes[i].from; }
+
+ var end = doc.first + doc.size;
+ var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
+ var to = Math.min(end, visible.to + cm.options.viewportMargin);
+ if (display.showingFrom < from && from - display.showingFrom < 20) from = Math.max(doc.first, display.showingFrom);
+ if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(end, display.showingTo);
+ if (sawCollapsedSpans) {
+ from = lineNo(visualLine(doc, getLine(doc, from)));
+ while (to < end && lineIsHidden(doc, getLine(doc, to))) ++to;
+ }
+
+ // Create a range of theoretically intact lines, and punch holes
+ // in that using the change info.
+ var intact = [{from: Math.max(display.showingFrom, doc.first),
+ to: Math.min(display.showingTo, end)}];
+ if (intact[0].from >= intact[0].to) intact = [];
+ else intact = computeIntact(intact, changes);
+ // When merged lines are present, we might have to reduce the
+ // intact ranges because changes in continued fragments of the
+ // intact lines do require the lines to be redrawn.
+ if (sawCollapsedSpans)
+ for (var i = 0; i < intact.length; ++i) {
+ var range = intact[i], merged;
+ while (merged = collapsedSpanAtEnd(getLine(doc, range.to - 1))) {
+ var newTo = merged.find().from.line;
+ if (newTo > range.from) range.to = newTo;
+ else { intact.splice(i--, 1); break; }
+ }
+ }
+
+ // Clip off the parts that won't be visible
+ var intactLines = 0;
+ for (var i = 0; i < intact.length; ++i) {
+ var range = intact[i];
+ if (range.from < from) range.from = from;
+ if (range.to > to) range.to = to;
+ if (range.from >= range.to) intact.splice(i--, 1);
+ else intactLines += range.to - range.from;
+ }
+ if (!forced && intactLines == to - from && from == display.showingFrom && to == display.showingTo) {
+ updateViewOffset(cm);
+ return;
+ }
+ intact.sort(function(a, b) {return a.from - b.from;});
+
+ // Avoid crashing on IE's "unspecified error" when in iframes
+ try {
+ var focused = document.activeElement;
+ } catch(e) {}
+ if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
+ patchDisplay(cm, from, to, intact, positionsChangedFrom);
+ display.lineDiv.style.display = "";
+ if (focused && document.activeElement != focused && focused.offsetHeight) focused.focus();
+
+ var different = from != display.showingFrom || to != display.showingTo ||
+ display.lastSizeC != display.wrapper.clientHeight;
+ // This is just a bogus formula that detects when the editor is
+ // resized or the font size changes.
+ if (different) {
+ display.lastSizeC = display.wrapper.clientHeight;
+ startWorker(cm, 400);
+ }
+ display.showingFrom = from; display.showingTo = to;
+
+ display.gutters.style.height = "";
+ updateHeightsInViewport(cm);
+ updateViewOffset(cm);
+
+ return true;
+ }
+
+ function updateHeightsInViewport(cm) {
+ var display = cm.display;
+ var prevBottom = display.lineDiv.offsetTop;
+ for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) {
+ if (ie_lt8) {
+ var bot = node.offsetTop + node.offsetHeight;
+ height = bot - prevBottom;
+ prevBottom = bot;
+ } else {
+ var box = getRect(node);
+ height = box.bottom - box.top;
+ }
+ var diff = node.lineObj.height - height;
+ if (height < 2) height = textHeight(display);
+ if (diff > .001 || diff < -.001) {
+ updateLineHeight(node.lineObj, height);
+ var widgets = node.lineObj.widgets;
+ if (widgets) for (var i = 0; i < widgets.length; ++i)
+ widgets[i].height = widgets[i].node.offsetHeight;
+ }
+ }
+ }
+
+ function updateViewOffset(cm) {
+ var off = cm.display.viewOffset = heightAtLine(cm, getLine(cm.doc, cm.display.showingFrom));
+ // Position the mover div to align with the current virtual scroll position
+ cm.display.mover.style.top = off + "px";
+ }
+
+ function computeIntact(intact, changes) {
+ for (var i = 0, l = changes.length || 0; i < l; ++i) {
+ var change = changes[i], intact2 = [], diff = change.diff || 0;
+ for (var j = 0, l2 = intact.length; j < l2; ++j) {
+ var range = intact[j];
+ if (change.to <= range.from && change.diff) {
+ intact2.push({from: range.from + diff, to: range.to + diff});
+ } else if (change.to <= range.from || change.from >= range.to) {
+ intact2.push(range);
+ } else {
+ if (change.from > range.from)
+ intact2.push({from: range.from, to: change.from});
+ if (change.to < range.to)
+ intact2.push({from: change.to + diff, to: range.to + diff});
+ }
+ }
+ intact = intact2;
+ }
+ return intact;
+ }
+
+ function getDimensions(cm) {
+ var d = cm.display, left = {}, width = {};
+ for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
+ left[cm.options.gutters[i]] = n.offsetLeft;
+ width[cm.options.gutters[i]] = n.offsetWidth;
+ }
+ return {fixedPos: compensateForHScroll(d),
+ gutterTotalWidth: d.gutters.offsetWidth,
+ gutterLeft: left,
+ gutterWidth: width,
+ wrapperWidth: d.wrapper.clientWidth};
+ }
+
+ function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
+ var dims = getDimensions(cm);
+ var display = cm.display, lineNumbers = cm.options.lineNumbers;
+ if (!intact.length && (!webkit || !cm.display.currentWheelTarget))
+ removeChildren(display.lineDiv);
+ var container = display.lineDiv, cur = container.firstChild;
+
+ function rm(node) {
+ var next = node.nextSibling;
+ if (webkit && mac && cm.display.currentWheelTarget == node) {
+ node.style.display = "none";
+ node.lineObj = null;
+ } else {
+ node.parentNode.removeChild(node);
+ }
+ return next;
+ }
+
+ var nextIntact = intact.shift(), lineN = from;
+ cm.doc.iter(from, to, function(line) {
+ if (nextIntact && nextIntact.to == lineN) nextIntact = intact.shift();
+ if (lineIsHidden(cm.doc, line)) {
+ if (line.height != 0) updateLineHeight(line, 0);
+ if (line.widgets && cur && cur.previousSibling) for (var i = 0; i < line.widgets.length; ++i) {
+ var w = line.widgets[i];
+ if (w.showIfHidden) {
+ var prev = cur.previousSibling;
+ if (/pre/i.test(prev.nodeName)) {
+ var wrap = elt("div", null, null, "position: relative");
+ prev.parentNode.replaceChild(wrap, prev);
+ wrap.appendChild(prev);
+ prev = wrap;
+ }
+ var wnode = prev.appendChild(elt("div", [w.node], "CodeMirror-linewidget"));
+ if (!w.handleMouseEvents) wnode.ignoreEvents = true;
+ positionLineWidget(w, wnode, prev, dims);
+ }
+ }
+ } else if (nextIntact && nextIntact.from <= lineN && nextIntact.to > lineN) {
+ // This line is intact. Skip to the actual node. Update its
+ // line number if needed.
+ while (cur.lineObj != line) cur = rm(cur);
+ if (lineNumbers && updateNumbersFrom <= lineN && cur.lineNumber)
+ setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineN));
+ cur = cur.nextSibling;
+ } else {
+ // For lines with widgets, make an attempt to find and reuse
+ // the existing element, so that widgets aren't needlessly
+ // removed and re-inserted into the dom
+ if (line.widgets) for (var j = 0, search = cur, reuse; search && j < 20; ++j, search = search.nextSibling)
+ if (search.lineObj == line && /div/i.test(search.nodeName)) { reuse = search; break; }
+ // This line needs to be generated.
+ var lineNode = buildLineElement(cm, line, lineN, dims, reuse);
+ if (lineNode != reuse) {
+ container.insertBefore(lineNode, cur);
+ } else {
+ while (cur != reuse) cur = rm(cur);
+ cur = cur.nextSibling;
+ }
+
+ lineNode.lineObj = line;
+ }
+ ++lineN;
+ });
+ while (cur) cur = rm(cur);
+ }
+
+ function buildLineElement(cm, line, lineNo, dims, reuse) {
+ var built = buildLineContent(cm, line), lineElement = built.pre;
+ var markers = line.gutterMarkers, display = cm.display, wrap;
+
+ var bgClass = built.bgClass ? built.bgClass + " " + (line.bgClass || "") : line.bgClass;
+ if (!cm.options.lineNumbers && !markers && !bgClass && !line.wrapClass && !line.widgets)
+ return lineElement;
+
+ // Lines with gutter elements, widgets or a background class need
+ // to be wrapped again, and have the extra elements added to the
+ // wrapper div
+
+ if (reuse) {
+ reuse.alignable = null;
+ var isOk = true, widgetsSeen = 0, insertBefore = null;
+ for (var n = reuse.firstChild, next; n; n = next) {
+ next = n.nextSibling;
+ if (!/\bCodeMirror-linewidget\b/.test(n.className)) {
+ reuse.removeChild(n);
+ } else {
+ for (var i = 0; i < line.widgets.length; ++i) {
+ var widget = line.widgets[i];
+ if (widget.node == n.firstChild) {
+ if (!widget.above && !insertBefore) insertBefore = n;
+ positionLineWidget(widget, n, reuse, dims);
+ ++widgetsSeen;
+ break;
+ }
+ }
+ if (i == line.widgets.length) { isOk = false; break; }
+ }
+ }
+ reuse.insertBefore(lineElement, insertBefore);
+ if (isOk && widgetsSeen == line.widgets.length) {
+ wrap = reuse;
+ reuse.className = line.wrapClass || "";
+ }
+ }
+ if (!wrap) {
+ wrap = elt("div", null, line.wrapClass, "position: relative");
+ wrap.appendChild(lineElement);
+ }
+ // Kludge to make sure the styled element lies behind the selection (by z-index)
+ if (bgClass)
+ wrap.insertBefore(elt("div", null, bgClass + " CodeMirror-linebackground"), wrap.firstChild);
+ if (cm.options.lineNumbers || markers) {
+ var gutterWrap = wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " +
+ (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
+ lineElement);
+ if (cm.options.fixedGutter) (wrap.alignable || (wrap.alignable = [])).push(gutterWrap);
+ if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
+ wrap.lineNumber = gutterWrap.appendChild(
+ elt("div", lineNumberFor(cm.options, lineNo),
+ "CodeMirror-linenumber CodeMirror-gutter-elt",
+ "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
+ + display.lineNumInnerWidth + "px"));
+ if (markers)
+ for (var k = 0; k < cm.options.gutters.length; ++k) {
+ var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
+ if (found)
+ gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
+ dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
+ }
+ }
+ if (ie_lt8) wrap.style.zIndex = 2;
+ if (line.widgets && wrap != reuse) for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
+ var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
+ if (!widget.handleMouseEvents) node.ignoreEvents = true;
+ positionLineWidget(widget, node, wrap, dims);
+ if (widget.above)
+ wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
+ else
+ wrap.appendChild(node);
+ signalLater(widget, "redraw");
+ }
+ return wrap;
+ }
+
+ function positionLineWidget(widget, node, wrap, dims) {
+ if (widget.noHScroll) {
+ (wrap.alignable || (wrap.alignable = [])).push(node);
+ var width = dims.wrapperWidth;
+ node.style.left = dims.fixedPos + "px";
+ if (!widget.coverGutter) {
+ width -= dims.gutterTotalWidth;
+ node.style.paddingLeft = dims.gutterTotalWidth + "px";
+ }
+ node.style.width = width + "px";
+ }
+ if (widget.coverGutter) {
+ node.style.zIndex = 5;
+ node.style.position = "relative";
+ if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
+ }
+ }
+
+ // SELECTION / CURSOR
+
+ function updateSelection(cm) {
+ var display = cm.display;
+ var collapsed = posEq(cm.doc.sel.from, cm.doc.sel.to);
+ if (collapsed || cm.options.showCursorWhenSelecting)
+ updateSelectionCursor(cm);
+ else
+ display.cursor.style.display = display.otherCursor.style.display = "none";
+ if (!collapsed)
+ updateSelectionRange(cm);
+ else
+ display.selectionDiv.style.display = "none";
+
+ // Move the hidden textarea near the cursor to prevent scrolling artifacts
+ if (cm.options.moveInputWithCursor) {
+ var headPos = cursorCoords(cm, cm.doc.sel.head, "div");
+ var wrapOff = getRect(display.wrapper), lineOff = getRect(display.lineDiv);
+ display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
+ headPos.top + lineOff.top - wrapOff.top)) + "px";
+ display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
+ headPos.left + lineOff.left - wrapOff.left)) + "px";
+ }
+ }
+
+ // No selection, plain cursor
+ function updateSelectionCursor(cm) {
+ var display = cm.display, pos = cursorCoords(cm, cm.doc.sel.head, "div");
+ display.cursor.style.left = pos.left + "px";
+ display.cursor.style.top = pos.top + "px";
+ display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
+ display.cursor.style.display = "";
+
+ if (pos.other) {
+ display.otherCursor.style.display = "";
+ display.otherCursor.style.left = pos.other.left + "px";
+ display.otherCursor.style.top = pos.other.top + "px";
+ display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
+ } else { display.otherCursor.style.display = "none"; }
+ }
+
+ // Highlight selection
+ function updateSelectionRange(cm) {
+ var display = cm.display, doc = cm.doc, sel = cm.doc.sel;
+ var fragment = document.createDocumentFragment();
+ var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);
+
+ function add(left, top, width, bottom) {
+ if (top < 0) top = 0;
+ fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
+ "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) +
+ "px; height: " + (bottom - top) + "px"));
+ }
+
+ function drawForLine(line, fromArg, toArg) {
+ var lineObj = getLine(doc, line);
+ var lineLen = lineObj.text.length;
+ var start, end;
+ function coords(ch, bias) {
+ return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
+ }
+
+ iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
+ var leftPos = coords(from, "left"), rightPos, left, right;
+ if (from == to) {
+ rightPos = leftPos;
+ left = right = leftPos.left;
+ } else {
+ rightPos = coords(to - 1, "right");
+ if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
+ left = leftPos.left;
+ right = rightPos.right;
+ }
+ if (fromArg == null && from == 0) left = pl;
+ if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
+ add(left, leftPos.top, null, leftPos.bottom);
+ left = pl;
+ if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
+ }
+ if (toArg == null && to == lineLen) right = clientWidth;
+ if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
+ start = leftPos;
+ if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
+ end = rightPos;
+ if (left < pl + 1) left = pl;
+ add(left, rightPos.top, right - left, rightPos.bottom);
+ });
+ return {start: start, end: end};
+ }
+
+ if (sel.from.line == sel.to.line) {
+ drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
+ } else {
+ var fromLine = getLine(doc, sel.from.line), toLine = getLine(doc, sel.to.line);
+ var singleVLine = visualLine(doc, fromLine) == visualLine(doc, toLine);
+ var leftEnd = drawForLine(sel.from.line, sel.from.ch, singleVLine ? fromLine.text.length : null).end;
+ var rightStart = drawForLine(sel.to.line, singleVLine ? 0 : null, sel.to.ch).start;
+ if (singleVLine) {
+ if (leftEnd.top < rightStart.top - 2) {
+ add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
+ add(pl, rightStart.top, rightStart.left, rightStart.bottom);
+ } else {
+ add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
+ }
+ }
+ if (leftEnd.bottom < rightStart.top)
+ add(pl, leftEnd.bottom, null, rightStart.top);
+ }
+
+ removeChildrenAndAdd(display.selectionDiv, fragment);
+ display.selectionDiv.style.display = "";
+ }
+
+ // Cursor-blinking
+ function restartBlink(cm) {
+ if (!cm.state.focused) return;
+ var display = cm.display;
+ clearInterval(display.blinker);
+ var on = true;
+ display.cursor.style.visibility = display.otherCursor.style.visibility = "";
+ if (cm.options.cursorBlinkRate > 0)
+ display.blinker = setInterval(function() {
+ display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
+ }, cm.options.cursorBlinkRate);
+ }
+
+ // HIGHLIGHT WORKER
+
+ function startWorker(cm, time) {
+ if (cm.doc.mode.startState && cm.doc.frontier < cm.display.showingTo)
+ cm.state.highlight.set(time, bind(highlightWorker, cm));
+ }
+
+ function highlightWorker(cm) {
+ var doc = cm.doc;
+ if (doc.frontier < doc.first) doc.frontier = doc.first;
+ if (doc.frontier >= cm.display.showingTo) return;
+ var end = +new Date + cm.options.workTime;
+ var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
+ var changed = [], prevChange;
+ doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.showingTo + 500), function(line) {
+ if (doc.frontier >= cm.display.showingFrom) { // Visible
+ var oldStyles = line.styles;
+ line.styles = highlightLine(cm, line, state, true);
+ var ischange = !oldStyles || oldStyles.length != line.styles.length;
+ for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
+ if (ischange) {
+ if (prevChange && prevChange.end == doc.frontier) prevChange.end++;
+ else changed.push(prevChange = {start: doc.frontier, end: doc.frontier + 1});
+ }
+ line.stateAfter = copyState(doc.mode, state);
+ } else {
+ processLine(cm, line.text, state);
+ line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
+ }
+ ++doc.frontier;
+ if (+new Date > end) {
+ startWorker(cm, cm.options.workDelay);
+ return true;
+ }
+ });
+ if (changed.length)
+ operation(cm, function() {
+ for (var i = 0; i < changed.length; ++i)
+ regChange(this, changed[i].start, changed[i].end);
+ })();
+ }
+
+ // Finds the line to start with when starting a parse. Tries to
+ // find a line with a stateAfter, so that it can start with a
+ // valid state. If that fails, it returns the line with the
+ // smallest indentation, which tends to need the least context to
+ // parse correctly.
+ function findStartLine(cm, n, precise) {
+ var minindent, minline, doc = cm.doc;
+ var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
+ for (var search = n; search > lim; --search) {
+ if (search <= doc.first) return doc.first;
+ var line = getLine(doc, search - 1);
+ if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
+ var indented = countColumn(line.text, null, cm.options.tabSize);
+ if (minline == null || minindent > indented) {
+ minline = search - 1;
+ minindent = indented;
+ }
+ }
+ return minline;
+ }
+
+ function getStateBefore(cm, n, precise) {
+ var doc = cm.doc, display = cm.display;
+ if (!doc.mode.startState) return true;
+ var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
+ if (!state) state = startState(doc.mode);
+ else state = copyState(doc.mode, state);
+ doc.iter(pos, n, function(line) {
+ processLine(cm, line.text, state);
+ var save = pos == n - 1 || pos % 5 == 0 || pos >= display.showingFrom && pos < display.showingTo;
+ line.stateAfter = save ? copyState(doc.mode, state) : null;
+ ++pos;
+ });
+ if (precise) doc.frontier = pos;
+ return state;
+ }
+
+ // POSITION MEASUREMENT
+
+ function paddingTop(display) {return display.lineSpace.offsetTop;}
+ function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
+ function paddingLeft(display) {
+ var e = removeChildrenAndAdd(display.measure, elt("pre", null, null, "text-align: left")).appendChild(elt("span", "x"));
+ return e.offsetLeft;
+ }
+
+ function measureChar(cm, line, ch, data, bias) {
+ var dir = -1;
+ data = data || measureLine(cm, line);
+ if (data.crude) {
+ var left = data.left + ch * data.width;
+ return {left: left, right: left + data.width, top: data.top, bottom: data.bottom};
+ }
+
+ for (var pos = ch;; pos += dir) {
+ var r = data[pos];
+ if (r) break;
+ if (dir < 0 && pos == 0) dir = 1;
+ }
+ bias = pos > ch ? "left" : pos < ch ? "right" : bias;
+ if (bias == "left" && r.leftSide) r = r.leftSide;
+ else if (bias == "right" && r.rightSide) r = r.rightSide;
+ return {left: pos < ch ? r.right : r.left,
+ right: pos > ch ? r.left : r.right,
+ top: r.top,
+ bottom: r.bottom};
+ }
+
+ function findCachedMeasurement(cm, line) {
+ var cache = cm.display.measureLineCache;
+ for (var i = 0; i < cache.length; ++i) {
+ var memo = cache[i];
+ if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
+ cm.display.scroller.clientWidth == memo.width &&
+ memo.classes == line.textClass + "|" + line.wrapClass)
+ return memo;
+ }
+ }
+
+ function clearCachedMeasurement(cm, line) {
+ var exists = findCachedMeasurement(cm, line);
+ if (exists) exists.text = exists.measure = exists.markedSpans = null;
+ }
+
+ function measureLine(cm, line) {
+ // First look in the cache
+ var cached = findCachedMeasurement(cm, line);
+ if (cached) return cached.measure;
+
+ // Failing that, recompute and store result in cache
+ var measure = measureLineInner(cm, line);
+ var cache = cm.display.measureLineCache;
+ var memo = {text: line.text, width: cm.display.scroller.clientWidth,
+ markedSpans: line.markedSpans, measure: measure,
+ classes: line.textClass + "|" + line.wrapClass};
+ if (cache.length == 16) cache[++cm.display.measureLineCachePos % 16] = memo;
+ else cache.push(memo);
+ return measure;
+ }
+
+ function measureLineInner(cm, line) {
+ if (!cm.options.lineWrapping && line.text.length >= cm.options.crudeMeasuringFrom)
+ return crudelyMeasureLine(cm, line);
+
+ var display = cm.display, measure = emptyArray(line.text.length);
+ var pre = buildLineContent(cm, line, measure, true).pre;
+
+ // IE does not cache element positions of inline elements between
+ // calls to getBoundingClientRect. This makes the loop below,
+ // which gathers the positions of all the characters on the line,
+ // do an amount of layout work quadratic to the number of
+ // characters. When line wrapping is off, we try to improve things
+ // by first subdividing the line into a bunch of inline blocks, so
+ // that IE can reuse most of the layout information from caches
+ // for those blocks. This does interfere with line wrapping, so it
+ // doesn't work when wrapping is on, but in that case the
+ // situation is slightly better, since IE does cache line-wrapping
+ // information and only recomputes per-line.
+ if (old_ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) {
+ var fragment = document.createDocumentFragment();
+ var chunk = 10, n = pre.childNodes.length;
+ for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) {
+ var wrap = elt("div", null, null, "display: inline-block");
+ for (var j = 0; j < chunk && n; ++j) {
+ wrap.appendChild(pre.firstChild);
+ --n;
+ }
+ fragment.appendChild(wrap);
+ }
+ pre.appendChild(fragment);
+ }
+
+ removeChildrenAndAdd(display.measure, pre);
+
+ var outer = getRect(display.lineDiv);
+ var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
+ // Work around an IE7/8 bug where it will sometimes have randomly
+ // replaced our pre with a clone at this point.
+ if (ie_lt9 && display.measure.first != pre)
+ removeChildrenAndAdd(display.measure, pre);
+
+ function measureRect(rect) {
+ var top = rect.top - outer.top, bot = rect.bottom - outer.top;
+ if (bot > maxBot) bot = maxBot;
+ if (top < 0) top = 0;
+ for (var i = vranges.length - 2; i >= 0; i -= 2) {
+ var rtop = vranges[i], rbot = vranges[i+1];
+ if (rtop > bot || rbot < top) continue;
+ if (rtop <= top && rbot >= bot ||
+ top <= rtop && bot >= rbot ||
+ Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
+ vranges[i] = Math.min(top, rtop);
+ vranges[i+1] = Math.max(bot, rbot);
+ break;
+ }
+ }
+ if (i < 0) { i = vranges.length; vranges.push(top, bot); }
+ return {left: rect.left - outer.left,
+ right: rect.right - outer.left,
+ top: i, bottom: null};
+ }
+ function finishRect(rect) {
+ rect.bottom = vranges[rect.top+1];
+ rect.top = vranges[rect.top];
+ }
+
+ for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) {
+ var node = cur, rect = null;
+ // A widget might wrap, needs special care
+ if (/\bCodeMirror-widget\b/.test(cur.className) && cur.getClientRects) {
+ if (cur.firstChild.nodeType == 1) node = cur.firstChild;
+ var rects = node.getClientRects();
+ if (rects.length > 1) {
+ rect = data[i] = measureRect(rects[0]);
+ rect.rightSide = measureRect(rects[rects.length - 1]);
+ }
+ }
+ if (!rect) rect = data[i] = measureRect(getRect(node));
+ if (cur.measureRight) rect.right = getRect(cur.measureRight).left - outer.left;
+ if (cur.leftSide) rect.leftSide = measureRect(getRect(cur.leftSide));
+ }
+ removeChildren(cm.display.measure);
+ for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) {
+ finishRect(cur);
+ if (cur.leftSide) finishRect(cur.leftSide);
+ if (cur.rightSide) finishRect(cur.rightSide);
+ }
+ return data;
+ }
+
+ function crudelyMeasureLine(cm, line) {
+ var copy = new Line(line.text.slice(0, 100), null);
+ if (line.textClass) copy.textClass = line.textClass;
+ var measure = measureLineInner(cm, copy);
+ var left = measureChar(cm, copy, 0, measure, "left");
+ var right = measureChar(cm, copy, 99, measure, "right");
+ return {crude: true, top: left.top, left: left.left, bottom: left.bottom, width: (right.right - left.left) / 100};
+ }
+
+ function measureLineWidth(cm, line) {
+ var hasBadSpan = false;
+ if (line.markedSpans) for (var i = 0; i < line.markedSpans; ++i) {
+ var sp = line.markedSpans[i];
+ if (sp.collapsed && (sp.to == null || sp.to == line.text.length)) hasBadSpan = true;
+ }
+ var cached = !hasBadSpan && findCachedMeasurement(cm, line);
+ if (cached || line.text.length >= cm.options.crudeMeasuringFrom)
+ return measureChar(cm, line, line.text.length, cached && cached.measure, "right").right;
+
+ var pre = buildLineContent(cm, line, null, true).pre;
+ var end = pre.appendChild(zeroWidthElement(cm.display.measure));
+ removeChildrenAndAdd(cm.display.measure, pre);
+ return getRect(end).right - getRect(cm.display.lineDiv).left;
+ }
+
+ function clearCaches(cm) {
+ cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0;
+ cm.display.cachedCharWidth = cm.display.cachedTextHeight = null;
+ if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
+ cm.display.lineNumChars = null;
+ }
+
+ function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
+ function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }
+
+ // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page"
+ function intoCoordSystem(cm, lineObj, rect, context) {
+ if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
+ var size = widgetHeight(lineObj.widgets[i]);
+ rect.top += size; rect.bottom += size;
+ }
+ if (context == "line") return rect;
+ if (!context) context = "local";
+ var yOff = heightAtLine(cm, lineObj);
+ if (context == "local") yOff += paddingTop(cm.display);
+ else yOff -= cm.display.viewOffset;
+ if (context == "page" || context == "window") {
+ var lOff = getRect(cm.display.lineSpace);
+ yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
+ var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
+ rect.left += xOff; rect.right += xOff;
+ }
+ rect.top += yOff; rect.bottom += yOff;
+ return rect;
+ }
+
+ // Context may be "window", "page", "div", or "local"/null
+ // Result is in "div" coords
+ function fromCoordSystem(cm, coords, context) {
+ if (context == "div") return coords;
+ var left = coords.left, top = coords.top;
+ // First move into "page" coordinate system
+ if (context == "page") {
+ left -= pageScrollX();
+ top -= pageScrollY();
+ } else if (context == "local" || !context) {
+ var localBox = getRect(cm.display.sizer);
+ left += localBox.left;
+ top += localBox.top;
+ }
+
+ var lineSpaceBox = getRect(cm.display.lineSpace);
+ return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
+ }
+
+ function charCoords(cm, pos, context, lineObj, bias) {
+ if (!lineObj) lineObj = getLine(cm.doc, pos.line);
+ return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, null, bias), context);
+ }
+
+ function cursorCoords(cm, pos, context, lineObj, measurement) {
+ lineObj = lineObj || getLine(cm.doc, pos.line);
+ if (!measurement) measurement = measureLine(cm, lineObj);
+ function get(ch, right) {
+ var m = measureChar(cm, lineObj, ch, measurement, right ? "right" : "left");
+ if (right) m.left = m.right; else m.right = m.left;
+ return intoCoordSystem(cm, lineObj, m, context);
+ }
+ function getBidi(ch, partPos) {
+ var part = order[partPos], right = part.level % 2;
+ if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
+ part = order[--partPos];
+ ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
+ right = true;
+ } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
+ part = order[++partPos];
+ ch = bidiLeft(part) - part.level % 2;
+ right = false;
+ }
+ if (right && ch == part.to && ch > part.from) return get(ch - 1);
+ return get(ch, right);
+ }
+ var order = getOrder(lineObj), ch = pos.ch;
+ if (!order) return get(ch);
+ var partPos = getBidiPartAt(order, ch);
+ var val = getBidi(ch, partPos);
+ if (bidiOther != null) val.other = getBidi(ch, bidiOther);
+ return val;
+ }
+
+ function PosWithInfo(line, ch, outside, xRel) {
+ var pos = new Pos(line, ch);
+ pos.xRel = xRel;
+ if (outside) pos.outside = true;
+ return pos;
+ }
+
+ // Coords must be lineSpace-local
+ function coordsChar(cm, x, y) {
+ var doc = cm.doc;
+ y += cm.display.viewOffset;
+ if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
+ var lineNo = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
+ if (lineNo > last)
+ return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
+ if (x < 0) x = 0;
+
+ for (;;) {
+ var lineObj = getLine(doc, lineNo);
+ var found = coordsCharInner(cm, lineObj, lineNo, x, y);
+ var merged = collapsedSpanAtEnd(lineObj);
+ var mergedPos = merged && merged.find();
+ if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
+ lineNo = mergedPos.to.line;
+ else
+ return found;
+ }
+ }
+
+ function coordsCharInner(cm, lineObj, lineNo, x, y) {
+ var innerOff = y - heightAtLine(cm, lineObj);
+ var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
+ var measurement = measureLine(cm, lineObj);
+
+ function getX(ch) {
+ var sp = cursorCoords(cm, Pos(lineNo, ch), "line",
+ lineObj, measurement);
+ wrongLine = true;
+ if (innerOff > sp.bottom) return sp.left - adjust;
+ else if (innerOff < sp.top) return sp.left + adjust;
+ else wrongLine = false;
+ return sp.left;
+ }
+
+ var bidi = getOrder(lineObj), dist = lineObj.text.length;
+ var from = lineLeft(lineObj), to = lineRight(lineObj);
+ var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
+
+ if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
+ // Do a binary search between these bounds.
+ for (;;) {
+ if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
+ var ch = x < fromX || x - fromX <= toX - x ? from : to;
+ var xDiff = x - (ch == from ? fromX : toX);
+ while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
+ var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
+ xDiff < 0 ? -1 : xDiff ? 1 : 0);
+ return pos;
+ }
+ var step = Math.ceil(dist / 2), middle = from + step;
+ if (bidi) {
+ middle = from;
+ for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
+ }
+ var middleX = getX(middle);
+ if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
+ else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
+ }
+ }
+
+ var measureText;
+ function textHeight(display) {
+ if (display.cachedTextHeight != null) return display.cachedTextHeight;
+ if (measureText == null) {
+ measureText = elt("pre");
+ // Measure a bunch of lines, for browsers that compute
+ // fractional heights.
+ for (var i = 0; i < 49; ++i) {
+ measureText.appendChild(document.createTextNode("x"));
+ measureText.appendChild(elt("br"));
+ }
+ measureText.appendChild(document.createTextNode("x"));
+ }
+ removeChildrenAndAdd(display.measure, measureText);
+ var height = measureText.offsetHeight / 50;
+ if (height > 3) display.cachedTextHeight = height;
+ removeChildren(display.measure);
+ return height || 1;
+ }
+
+ function charWidth(display) {
+ if (display.cachedCharWidth != null) return display.cachedCharWidth;
+ var anchor = elt("span", "x");
+ var pre = elt("pre", [anchor]);
+ removeChildrenAndAdd(display.measure, pre);
+ var width = anchor.offsetWidth;
+ if (width > 2) display.cachedCharWidth = width;
+ return width || 10;
+ }
+
+ // OPERATIONS
+
+ // Operations are used to wrap changes in such a way that each
+ // change won't have to update the cursor and display (which would
+ // be awkward, slow, and error-prone), but instead updates are
+ // batched and then all combined and executed at once.
+
+ var nextOpId = 0;
+ function startOperation(cm) {
+ cm.curOp = {
+ // An array of ranges of lines that have to be updated. See
+ // updateDisplay.
+ changes: [],
+ forceUpdate: false,
+ updateInput: null,
+ userSelChange: null,
+ textChanged: null,
+ selectionChanged: false,
+ cursorActivity: false,
+ updateMaxLine: false,
+ updateScrollPos: false,
+ id: ++nextOpId
+ };
+ if (!delayedCallbackDepth++) delayedCallbacks = [];
+ }
+
+ function endOperation(cm) {
+ var op = cm.curOp, doc = cm.doc, display = cm.display;
+ cm.curOp = null;
+
+ if (op.updateMaxLine) computeMaxLength(cm);
+ if (display.maxLineChanged && !cm.options.lineWrapping && display.maxLine) {
+ var width = measureLineWidth(cm, display.maxLine);
+ display.sizer.style.minWidth = Math.max(0, width + 3 + scrollerCutOff) + "px";
+ display.maxLineChanged = false;
+ var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + display.sizer.offsetWidth - display.scroller.clientWidth);
+ if (maxScrollLeft < doc.scrollLeft && !op.updateScrollPos)
+ setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
+ }
+ var newScrollPos, updated;
+ if (op.updateScrollPos) {
+ newScrollPos = op.updateScrollPos;
+ } else if (op.selectionChanged && display.scroller.clientHeight) { // don't rescroll if not visible
+ var coords = cursorCoords(cm, doc.sel.head);
+ newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
+ }
+ if (op.changes.length || op.forceUpdate || newScrollPos && newScrollPos.scrollTop != null) {
+ updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop, op.forceUpdate);
+ if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
+ }
+ if (!updated && op.selectionChanged) updateSelection(cm);
+ if (op.updateScrollPos) {
+ var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, newScrollPos.scrollTop));
+ var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, newScrollPos.scrollLeft));
+ display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top;
+ display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left;
+ alignHorizontally(cm);
+ if (op.scrollToPos)
+ scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from),
+ clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin);
+ } else if (newScrollPos) {
+ scrollCursorIntoView(cm);
+ }
+ if (op.selectionChanged) restartBlink(cm);
+
+ if (cm.state.focused && op.updateInput)
+ resetInput(cm, op.userSelChange);
+
+ var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
+ if (hidden) for (var i = 0; i < hidden.length; ++i)
+ if (!hidden[i].lines.length) signal(hidden[i], "hide");
+ if (unhidden) for (var i = 0; i < unhidden.length; ++i)
+ if (unhidden[i].lines.length) signal(unhidden[i], "unhide");
+
+ var delayed;
+ if (!--delayedCallbackDepth) {
+ delayed = delayedCallbacks;
+ delayedCallbacks = null;
+ }
+ if (op.textChanged)
+ signal(cm, "change", cm, op.textChanged);
+ if (op.cursorActivity) signal(cm, "cursorActivity", cm);
+ if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
+ }
+
+ // Wraps a function in an operation. Returns the wrapped function.
+ function operation(cm1, f) {
+ return function() {
+ var cm = cm1 || this, withOp = !cm.curOp;
+ if (withOp) startOperation(cm);
+ try { var result = f.apply(cm, arguments); }
+ finally { if (withOp) endOperation(cm); }
+ return result;
+ };
+ }
+ function docOperation(f) {
+ return function() {
+ var withOp = this.cm && !this.cm.curOp, result;
+ if (withOp) startOperation(this.cm);
+ try { result = f.apply(this, arguments); }
+ finally { if (withOp) endOperation(this.cm); }
+ return result;
+ };
+ }
+ function runInOp(cm, f) {
+ var withOp = !cm.curOp, result;
+ if (withOp) startOperation(cm);
+ try { result = f(); }
+ finally { if (withOp) endOperation(cm); }
+ return result;
+ }
+
+ function regChange(cm, from, to, lendiff) {
+ if (from == null) from = cm.doc.first;
+ if (to == null) to = cm.doc.first + cm.doc.size;
+ cm.curOp.changes.push({from: from, to: to, diff: lendiff});
+ }
+
+ // INPUT HANDLING
+
+ function slowPoll(cm) {
+ if (cm.display.pollingFast) return;
+ cm.display.poll.set(cm.options.pollInterval, function() {
+ readInput(cm);
+ if (cm.state.focused) slowPoll(cm);
+ });
+ }
+
+ function fastPoll(cm) {
+ var missed = false;
+ cm.display.pollingFast = true;
+ function p() {
+ var changed = readInput(cm);
+ if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
+ else {cm.display.pollingFast = false; slowPoll(cm);}
+ }
+ cm.display.poll.set(20, p);
+ }
+
+ // prevInput is a hack to work with IME. If we reset the textarea
+ // on every change, that breaks IME. So we look for changes
+ // compared to the previous content instead. (Modern browsers have
+ // events that indicate IME taking place, but these are not widely
+ // supported or compatible enough yet to rely on.)
+ function readInput(cm) {
+ var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc, sel = doc.sel;
+ if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.options.disableInput) return false;
+ if (cm.state.pasteIncoming && cm.state.fakedLastChar) {
+ input.value = input.value.substring(0, input.value.length - 1);
+ cm.state.fakedLastChar = false;
+ }
+ var text = input.value;
+ if (text == prevInput && posEq(sel.from, sel.to)) return false;
+ if (ie && !ie_lt9 && cm.display.inputHasSelection === text) {
+ resetInput(cm, true);
+ return false;
+ }
+
+ var withOp = !cm.curOp;
+ if (withOp) startOperation(cm);
+ sel.shift = false;
+ var same = 0, l = Math.min(prevInput.length, text.length);
+ while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
+ var from = sel.from, to = sel.to;
+ var inserted = text.slice(same);
+ if (same < prevInput.length)
+ from = Pos(from.line, from.ch - (prevInput.length - same));
+ else if (cm.state.overwrite && posEq(from, to) && !cm.state.pasteIncoming)
+ to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + inserted.length));
+
+ var updateInput = cm.curOp.updateInput;
+ var changeEvent = {from: from, to: to, text: splitLines(inserted),
+ origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
+ makeChange(cm.doc, changeEvent, "end");
+ cm.curOp.updateInput = updateInput;
+ signalLater(cm, "inputRead", cm, changeEvent);
+ if (inserted && !cm.state.pasteIncoming && cm.options.electricChars &&
+ cm.options.smartIndent && sel.head.ch < 100) {
+ var electric = cm.getModeAt(sel.head).electricChars;
+ if (electric) for (var i = 0; i < electric.length; i++)
+ if (inserted.indexOf(electric.charAt(i)) > -1) {
+ indentLine(cm, sel.head.line, "smart");
+ break;
+ }
+ }
+
+ if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = "";
+ else cm.display.prevInput = text;
+ if (withOp) endOperation(cm);
+ cm.state.pasteIncoming = cm.state.cutIncoming = false;
+ return true;
+ }
+
+ function resetInput(cm, user) {
+ var minimal, selected, doc = cm.doc;
+ if (!posEq(doc.sel.from, doc.sel.to)) {
+ cm.display.prevInput = "";
+ minimal = hasCopyEvent &&
+ (doc.sel.to.line - doc.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
+ var content = minimal ? "-" : selected || cm.getSelection();
+ cm.display.input.value = content;
+ if (cm.state.focused) selectInput(cm.display.input);
+ if (ie && !ie_lt9) cm.display.inputHasSelection = content;
+ } else if (user) {
+ cm.display.prevInput = cm.display.input.value = "";
+ if (ie && !ie_lt9) cm.display.inputHasSelection = null;
+ }
+ cm.display.inaccurateSelection = minimal;
+ }
+
+ function focusInput(cm) {
+ if (cm.options.readOnly != "nocursor" && (!mobile || document.activeElement != cm.display.input))
+ cm.display.input.focus();
+ }
+
+ function isReadOnly(cm) {
+ return cm.options.readOnly || cm.doc.cantEdit;
+ }
+
+ // EVENT HANDLERS
+
+ function registerEventHandlers(cm) {
+ var d = cm.display;
+ on(d.scroller, "mousedown", operation(cm, onMouseDown));
+ if (old_ie)
+ on(d.scroller, "dblclick", operation(cm, function(e) {
+ if (signalDOMEvent(cm, e)) return;
+ var pos = posFromMouse(cm, e);
+ if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
+ e_preventDefault(e);
+ var word = findWordAt(getLine(cm.doc, pos.line).text, pos);
+ extendSelection(cm.doc, word.from, word.to);
+ }));
+ else
+ on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
+ on(d.lineSpace, "selectstart", function(e) {
+ if (!eventInWidget(d, e)) e_preventDefault(e);
+ });
+ // Gecko browsers fire contextmenu *after* opening the menu, at
+ // which point we can't mess with it anymore. Context menu is
+ // handled in onMouseDown for Gecko.
+ if (!captureMiddleClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
+
+ on(d.scroller, "scroll", function() {
+ if (d.scroller.clientHeight) {
+ setScrollTop(cm, d.scroller.scrollTop);
+ setScrollLeft(cm, d.scroller.scrollLeft, true);
+ signal(cm, "scroll", cm);
+ }
+ });
+ on(d.scrollbarV, "scroll", function() {
+ if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop);
+ });
+ on(d.scrollbarH, "scroll", function() {
+ if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
+ });
+
+ on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
+ on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
+
+ function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
+ on(d.scrollbarH, "mousedown", reFocus);
+ on(d.scrollbarV, "mousedown", reFocus);
+ // Prevent wrapper from ever scrolling
+ on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
+
+ var resizeTimer;
+ function onResize() {
+ if (resizeTimer == null) resizeTimer = setTimeout(function() {
+ resizeTimer = null;
+ // Might be a text scaling operation, clear size caches.
+ d.cachedCharWidth = d.cachedTextHeight = knownScrollbarWidth = null;
+ clearCaches(cm);
+ runInOp(cm, bind(regChange, cm));
+ }, 100);
+ }
+ on(window, "resize", onResize);
+ // Above handler holds on to the editor and its data structures.
+ // Here we poll to unregister it when the editor is no longer in
+ // the document, so that it can be garbage-collected.
+ function unregister() {
+ for (var p = d.wrapper.parentNode; p && p != document.body; p = p.parentNode) {}
+ if (p) setTimeout(unregister, 5000);
+ else off(window, "resize", onResize);
+ }
+ setTimeout(unregister, 5000);
+
+ on(d.input, "keyup", operation(cm, onKeyUp));
+ on(d.input, "input", function() {
+ if (ie && !ie_lt9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
+ fastPoll(cm);
+ });
+ on(d.input, "keydown", operation(cm, onKeyDown));
+ on(d.input, "keypress", operation(cm, onKeyPress));
+ on(d.input, "focus", bind(onFocus, cm));
+ on(d.input, "blur", bind(onBlur, cm));
+
+ function drag_(e) {
+ if (signalDOMEvent(cm, e) || cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
+ e_stop(e);
+ }
+ if (cm.options.dragDrop) {
+ on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
+ on(d.scroller, "dragenter", drag_);
+ on(d.scroller, "dragover", drag_);
+ on(d.scroller, "drop", operation(cm, onDrop));
+ }
+ on(d.scroller, "paste", function(e) {
+ if (eventInWidget(d, e)) return;
+ focusInput(cm);
+ fastPoll(cm);
+ });
+ on(d.input, "paste", function() {
+ // Workaround for webkit bug https://bugs.webkit.org/show_bug.cgi?id=90206
+ // Add a char to the end of textarea before paste occur so that
+ // selection doesn't span to the end of textarea.
+ if (webkit && !cm.state.fakedLastChar && !(new Date - cm.state.lastMiddleDown < 200)) {
+ var start = d.input.selectionStart, end = d.input.selectionEnd;
+ d.input.value += "$";
+ d.input.selectionStart = start;
+ d.input.selectionEnd = end;
+ cm.state.fakedLastChar = true;
+ }
+ cm.state.pasteIncoming = true;
+ fastPoll(cm);
+ });
+
+ function prepareCopy(e) {
+ if (d.inaccurateSelection) {
+ d.prevInput = "";
+ d.inaccurateSelection = false;
+ d.input.value = cm.getSelection();
+ selectInput(d.input);
+ }
+ if (e.type == "cut") cm.state.cutIncoming = true;
+ }
+ on(d.input, "cut", prepareCopy);
+ on(d.input, "copy", prepareCopy);
+
+ // Needed to handle Tab key in KHTML
+ if (khtml) on(d.sizer, "mouseup", function() {
+ if (document.activeElement == d.input) d.input.blur();
+ focusInput(cm);
+ });
+ }
+
+ function eventInWidget(display, e) {
+ for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
+ if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true;
+ }
+ }
+
+ function posFromMouse(cm, e, liberal) {
+ var display = cm.display;
+ if (!liberal) {
+ var target = e_target(e);
+ if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
+ target == display.scrollbarV || target == display.scrollbarV.firstChild ||
+ target == display.scrollbarFiller || target == display.gutterFiller) return null;
+ }
+ var x, y, space = getRect(display.lineSpace);
+ // Fails unpredictably on IE[67] when mouse is dragged around quickly.
+ try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
+ return coordsChar(cm, x - space.left, y - space.top);
+ }
+
+ var lastClick, lastDoubleClick;
+ function onMouseDown(e) {
+ if (signalDOMEvent(this, e)) return;
+ var cm = this, display = cm.display, doc = cm.doc, sel = doc.sel;
+ sel.shift = e.shiftKey;
+
+ if (eventInWidget(display, e)) {
+ if (!webkit) {
+ display.scroller.draggable = false;
+ setTimeout(function(){display.scroller.draggable = true;}, 100);
+ }
+ return;
+ }
+ if (clickInGutter(cm, e)) return;
+ var start = posFromMouse(cm, e);
+ window.focus();
+
+ switch (e_button(e)) {
+ case 3:
+ if (captureMiddleClick) onContextMenu.call(cm, cm, e);
+ return;
+ case 2:
+ if (webkit) cm.state.lastMiddleDown = +new Date;
+ if (start) extendSelection(cm.doc, start);
+ setTimeout(bind(focusInput, cm), 20);
+ e_preventDefault(e);
+ return;
+ }
+ // For button 1, if it was clicked inside the editor
+ // (posFromMouse returning non-null), we have to adjust the
+ // selection.
+ if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}
+
+ if (!cm.state.focused) onFocus(cm);
+
+ var now = +new Date, type = "single";
+ if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
+ type = "triple";
+ e_preventDefault(e);
+ setTimeout(bind(focusInput, cm), 20);
+ selectLine(cm, start.line);
+ } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
+ type = "double";
+ lastDoubleClick = {time: now, pos: start};
+ e_preventDefault(e);
+ var word = findWordAt(getLine(doc, start.line).text, start);
+ extendSelection(cm.doc, word.from, word.to);
+ } else { lastClick = {time: now, pos: start}; }
+
+ var last = start;
+ if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
+ !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
+ var dragEnd = operation(cm, function(e2) {
+ if (webkit) display.scroller.draggable = false;
+ cm.state.draggingText = false;
+ off(document, "mouseup", dragEnd);
+ off(display.scroller, "drop", dragEnd);
+ if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
+ e_preventDefault(e2);
+ extendSelection(cm.doc, start);
+ focusInput(cm);
+ // Work around unexplainable focus problem in IE9 (#2127)
+ if (old_ie && !ie_lt9)
+ setTimeout(function() {document.body.focus(); focusInput(cm);}, 20);
+ }
+ });
+ // Let the drag handler handle this.
+ if (webkit) display.scroller.draggable = true;
+ cm.state.draggingText = dragEnd;
+ // IE's approach to draggable
+ if (display.scroller.dragDrop) display.scroller.dragDrop();
+ on(document, "mouseup", dragEnd);
+ on(display.scroller, "drop", dragEnd);
+ return;
+ }
+ e_preventDefault(e);
+ if (type == "single") extendSelection(cm.doc, clipPos(doc, start));
+
+ var startstart = sel.from, startend = sel.to, lastPos = start;
+
+ function doSelect(cur) {
+ if (posEq(lastPos, cur)) return;
+ lastPos = cur;
+
+ if (type == "single") {
+ extendSelection(cm.doc, clipPos(doc, start), cur);
+ return;
+ }
+
+ startstart = clipPos(doc, startstart);
+ startend = clipPos(doc, startend);
+ if (type == "double") {
+ var word = findWordAt(getLine(doc, cur.line).text, cur);
+ if (posLess(cur, startstart)) extendSelection(cm.doc, word.from, startend);
+ else extendSelection(cm.doc, startstart, word.to);
+ } else if (type == "triple") {
+ if (posLess(cur, startstart)) extendSelection(cm.doc, startend, clipPos(doc, Pos(cur.line, 0)));
+ else extendSelection(cm.doc, startstart, clipPos(doc, Pos(cur.line + 1, 0)));
+ }
+ }
+
+ var editorSize = getRect(display.wrapper);
+ // Used to ensure timeout re-tries don't fire when another extend
+ // happened in the meantime (clearTimeout isn't reliable -- at
+ // least on Chrome, the timeouts still happen even when cleared,
+ // if the clear happens after their scheduled firing time).
+ var counter = 0;
+
+ function extend(e) {
+ var curCount = ++counter;
+ var cur = posFromMouse(cm, e, true);
+ if (!cur) return;
+ if (!posEq(cur, last)) {
+ if (!cm.state.focused) onFocus(cm);
+ last = cur;
+ doSelect(cur);
+ var visible = visibleLines(display, doc);
+ if (cur.line >= visible.to || cur.line < visible.from)
+ setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
+ } else {
+ var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
+ if (outside) setTimeout(operation(cm, function() {
+ if (counter != curCount) return;
+ display.scroller.scrollTop += outside;
+ extend(e);
+ }), 50);
+ }
+ }
+
+ function done(e) {
+ counter = Infinity;
+ e_preventDefault(e);
+ focusInput(cm);
+ off(document, "mousemove", move);
+ off(document, "mouseup", up);
+ }
+
+ var move = operation(cm, function(e) {
+ if (!old_ie && !e_button(e)) done(e);
+ else extend(e);
+ });
+ var up = operation(cm, done);
+ on(document, "mousemove", move);
+ on(document, "mouseup", up);
+ }
+
+ function gutterEvent(cm, e, type, prevent, signalfn) {
+ try { var mX = e.clientX, mY = e.clientY; }
+ catch(e) { return false; }
+ if (mX >= Math.floor(getRect(cm.display.gutters).right)) return false;
+ if (prevent) e_preventDefault(e);
+
+ var display = cm.display;
+ var lineBox = getRect(display.lineDiv);
+
+ if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
+ mY -= lineBox.top - display.viewOffset;
+
+ for (var i = 0; i < cm.options.gutters.length; ++i) {
+ var g = display.gutters.childNodes[i];
+ if (g && getRect(g).right >= mX) {
+ var line = lineAtHeight(cm.doc, mY);
+ var gutter = cm.options.gutters[i];
+ signalfn(cm, type, cm, line, gutter, e);
+ return e_defaultPrevented(e);
+ }
+ }
+ }
+
+ function contextMenuInGutter(cm, e) {
+ if (!hasHandler(cm, "gutterContextMenu")) return false;
+ return gutterEvent(cm, e, "gutterContextMenu", false, signal);
+ }
+
+ function clickInGutter(cm, e) {
+ return gutterEvent(cm, e, "gutterClick", true, signalLater);
+ }
+
+ // Kludge to work around strange IE behavior where it'll sometimes
+ // re-fire a series of drag-related events right after the drop (#1551)
+ var lastDrop = 0;
+
+ function onDrop(e) {
+ var cm = this;
+ if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e) || (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))))
+ return;
+ e_preventDefault(e);
+ if (ie) lastDrop = +new Date;
+ var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
+ if (!pos || isReadOnly(cm)) return;
+ if (files && files.length && window.FileReader && window.File) {
+ var n = files.length, text = Array(n), read = 0;
+ var loadFile = function(file, i) {
+ var reader = new FileReader;
+ reader.onload = function() {
+ text[i] = reader.result;
+ if (++read == n) {
+ pos = clipPos(cm.doc, pos);
+ makeChange(cm.doc, {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"}, "around");
+ }
+ };
+ reader.readAsText(file);
+ };
+ for (var i = 0; i < n; ++i) loadFile(files[i], i);
+ } else {
+ // Don't do a replace if the drop happened inside of the selected text.
+ if (cm.state.draggingText && !(posLess(pos, cm.doc.sel.from) || posLess(cm.doc.sel.to, pos))) {
+ cm.state.draggingText(e);
+ // Ensure the editor is re-focused
+ setTimeout(bind(focusInput, cm), 20);
+ return;
+ }
+ try {
+ var text = e.dataTransfer.getData("Text");
+ if (text) {
+ var curFrom = cm.doc.sel.from, curTo = cm.doc.sel.to;
+ setSelection(cm.doc, pos, pos);
+ if (cm.state.draggingText) replaceRange(cm.doc, "", curFrom, curTo, "paste");
+ cm.replaceSelection(text, null, "paste");
+ focusInput(cm);
+ }
+ }
+ catch(e){}
+ }
+ }
+
+ function onDragStart(cm, e) {
+ if (ie && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
+ if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
+
+ var txt = cm.getSelection();
+ e.dataTransfer.setData("Text", txt);
+
+ // Use dummy image instead of default browsers image.
+ // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
+ if (e.dataTransfer.setDragImage && !safari) {
+ var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
+ img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
+ if (opera) {
+ img.width = img.height = 1;
+ cm.display.wrapper.appendChild(img);
+ // Force a relayout, or Opera won't use our image for some obscure reason
+ img._top = img.offsetTop;
+ }
+ e.dataTransfer.setDragImage(img, 0, 0);
+ if (opera) img.parentNode.removeChild(img);
+ }
+ }
+
+ function setScrollTop(cm, val) {
+ if (Math.abs(cm.doc.scrollTop - val) < 2) return;
+ cm.doc.scrollTop = val;
+ if (!gecko) updateDisplay(cm, [], val);
+ if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
+ if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
+ if (gecko) updateDisplay(cm, []);
+ startWorker(cm, 100);
+ }
+ function setScrollLeft(cm, val, isScroller) {
+ if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
+ val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
+ cm.doc.scrollLeft = val;
+ alignHorizontally(cm);
+ if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
+ if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
+ }
+
+ // Since the delta values reported on mouse wheel events are
+ // unstandardized between browsers and even browser versions, and
+ // generally horribly unpredictable, this code starts by measuring
+ // the scroll effect that the first few mouse wheel events have,
+ // and, from that, detects the way it can convert deltas to pixel
+ // offsets afterwards.
+ //
+ // The reason we want to know the amount a wheel event will scroll
+ // is that it gives us a chance to update the display before the
+ // actual scrolling happens, reducing flickering.
+
+ var wheelSamples = 0, wheelPixelsPerUnit = null;
+ // Fill in a browser-detected starting value on browsers where we
+ // know one. These don't have to be accurate -- the result of them
+ // being wrong would just be a slight flicker on the first wheel
+ // scroll (if it is large enough).
+ if (ie) wheelPixelsPerUnit = -.53;
+ else if (gecko) wheelPixelsPerUnit = 15;
+ else if (chrome) wheelPixelsPerUnit = -.7;
+ else if (safari) wheelPixelsPerUnit = -1/3;
+
+ function onScrollWheel(cm, e) {
+ var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
+ if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
+ if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
+ else if (dy == null) dy = e.wheelDelta;
+
+ var display = cm.display, scroll = display.scroller;
+ // Quit if there's nothing to scroll here
+ if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
+ dy && scroll.scrollHeight > scroll.clientHeight)) return;
+
+ // Webkit browsers on OS X abort momentum scrolls when the target
+ // of the scroll event is removed from the scrollable element.
+ // This hack (see related code in patchDisplay) makes sure the
+ // element is kept around.
+ if (dy && mac && webkit) {
+ for (var cur = e.target; cur != scroll; cur = cur.parentNode) {
+ if (cur.lineObj) {
+ cm.display.currentWheelTarget = cur;
+ break;
+ }
+ }
+ }
+
+ // On some browsers, horizontal scrolling will cause redraws to
+ // happen before the gutter has been realigned, causing it to
+ // wriggle around in a most unseemly way. When we have an
+ // estimated pixels/delta value, we just handle horizontal
+ // scrolling entirely here. It'll be slightly off from native, but
+ // better than glitching out.
+ if (dx && !gecko && !opera && wheelPixelsPerUnit != null) {
+ if (dy)
+ setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
+ setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
+ e_preventDefault(e);
+ display.wheelStartX = null; // Abort measurement, if in progress
+ return;
+ }
+
+ if (dy && wheelPixelsPerUnit != null) {
+ var pixels = dy * wheelPixelsPerUnit;
+ var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
+ if (pixels < 0) top = Math.max(0, top + pixels - 50);
+ else bot = Math.min(cm.doc.height, bot + pixels + 50);
+ updateDisplay(cm, [], {top: top, bottom: bot});
+ }
+
+ if (wheelSamples < 20) {
+ if (display.wheelStartX == null) {
+ display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
+ display.wheelDX = dx; display.wheelDY = dy;
+ setTimeout(function() {
+ if (display.wheelStartX == null) return;
+ var movedX = scroll.scrollLeft - display.wheelStartX;
+ var movedY = scroll.scrollTop - display.wheelStartY;
+ var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
+ (movedX && display.wheelDX && movedX / display.wheelDX);
+ display.wheelStartX = display.wheelStartY = null;
+ if (!sample) return;
+ wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
+ ++wheelSamples;
+ }, 200);
+ } else {
+ display.wheelDX += dx; display.wheelDY += dy;
+ }
+ }
+ }
+
+ function doHandleBinding(cm, bound, dropShift) {
+ if (typeof bound == "string") {
+ bound = commands[bound];
+ if (!bound) return false;
+ }
+ // Ensure previous input has been read, so that the handler sees a
+ // consistent view of the document
+ if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
+ var doc = cm.doc, prevShift = doc.sel.shift, done = false;
+ try {
+ if (isReadOnly(cm)) cm.state.suppressEdits = true;
+ if (dropShift) doc.sel.shift = false;
+ done = bound(cm) != Pass;
+ } finally {
+ doc.sel.shift = prevShift;
+ cm.state.suppressEdits = false;
+ }
+ return done;
+ }
+
+ function allKeyMaps(cm) {
+ var maps = cm.state.keyMaps.slice(0);
+ if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
+ maps.push(cm.options.keyMap);
+ return maps;
+ }
+
+ var maybeTransition;
+ function handleKeyBinding(cm, e) {
+ // Handle auto keymap transitions
+ var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
+ clearTimeout(maybeTransition);
+ if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
+ if (getKeyMap(cm.options.keyMap) == startMap) {
+ cm.options.keyMap = (next.call ? next.call(null, cm) : next);
+ keyMapChanged(cm);
+ }
+ }, 50);
+
+ var name = keyName(e, true), handled = false;
+ if (!name) return false;
+ var keymaps = allKeyMaps(cm);
+
+ if (e.shiftKey) {
+ // First try to resolve full name (including 'Shift-'). Failing
+ // that, see if there is a cursor-motion command (starting with
+ // 'go') bound to the keyname without 'Shift-'.
+ handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);})
+ || lookupKey(name, keymaps, function(b) {
+ if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
+ return doHandleBinding(cm, b);
+ });
+ } else {
+ handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); });
+ }
+
+ if (handled) {
+ e_preventDefault(e);
+ restartBlink(cm);
+ if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
+ signalLater(cm, "keyHandled", cm, name, e);
+ }
+ return handled;
+ }
+
+ function handleCharBinding(cm, e, ch) {
+ var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
+ function(b) { return doHandleBinding(cm, b, true); });
+ if (handled) {
+ e_preventDefault(e);
+ restartBlink(cm);
+ signalLater(cm, "keyHandled", cm, "'" + ch + "'", e);
+ }
+ return handled;
+ }
+
+ function onKeyUp(e) {
+ var cm = this;
+ if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
+ if (e.keyCode == 16) cm.doc.sel.shift = false;
+ }
+
+ var lastStoppedKey = null;
+ function onKeyDown(e) {
+ var cm = this;
+ if (!cm.state.focused) onFocus(cm);
+ if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
+ if (old_ie && e.keyCode == 27) e.returnValue = false;
+ var code = e.keyCode;
+ // IE does strange things with escape.
+ cm.doc.sel.shift = code == 16 || e.shiftKey;
+ // First give onKeyEvent option a chance to handle this.
+ var handled = handleKeyBinding(cm, e);
+ if (opera) {
+ lastStoppedKey = handled ? code : null;
+ // Opera has no cut event... we try to at least catch the key combo
+ if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
+ cm.replaceSelection("");
+ }
+ }
+
+ function onKeyPress(e) {
+ var cm = this;
+ if (signalDOMEvent(cm, e) || cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
+ var keyCode = e.keyCode, charCode = e.charCode;
+ if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
+ if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
+ var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
+ if (handleCharBinding(cm, e, ch)) return;
+ if (ie && !ie_lt9) cm.display.inputHasSelection = null;
+ fastPoll(cm);
+ }
+
+ function onFocus(cm) {
+ if (cm.options.readOnly == "nocursor") return;
+ if (!cm.state.focused) {
+ signal(cm, "focus", cm);
+ cm.state.focused = true;
+ if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
+ cm.display.wrapper.className += " CodeMirror-focused";
+ if (!cm.curOp) {
+ resetInput(cm, true);
+ if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730
+ }
+ }
+ slowPoll(cm);
+ restartBlink(cm);
+ }
+ function onBlur(cm) {
+ if (cm.state.focused) {
+ signal(cm, "blur", cm);
+ cm.state.focused = false;
+ cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", "");
+ }
+ clearInterval(cm.display.blinker);
+ setTimeout(function() {if (!cm.state.focused) cm.doc.sel.shift = false;}, 150);
+ }
+
+ var detectingSelectAll;
+ function onContextMenu(cm, e) {
+ if (signalDOMEvent(cm, e, "contextmenu")) return;
+ var display = cm.display, sel = cm.doc.sel;
+ if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;
+
+ var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
+ if (!pos || opera) return; // Opera is difficult.
+
+ // Reset the current text selection only if the click is done outside of the selection
+ // and 'resetSelectionOnContextMenu' option is true.
+ var reset = cm.options.resetSelectionOnContextMenu;
+ if (reset && (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to)))
+ operation(cm, setSelection)(cm.doc, pos, pos);
+
+ var oldCSS = display.input.style.cssText;
+ display.inputDiv.style.position = "absolute";
+ display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
+ "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: transparent; outline: none;" +
+ "border-width: 0; outline: none; overflow: hidden; opacity: .05; -ms-opacity: .05; filter: alpha(opacity=5);";
+ focusInput(cm);
+ resetInput(cm, true);
+ // Adds "Select all" to context menu in FF
+ if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";
+
+ function prepareSelectAllHack() {
+ if (display.input.selectionStart != null) {
+ var extval = display.input.value = "\u200b" + (posEq(sel.from, sel.to) ? "" : display.input.value);
+ display.prevInput = "\u200b";
+ display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
+ }
+ }
+ function rehide() {
+ display.inputDiv.style.position = "relative";
+ display.input.style.cssText = oldCSS;
+ if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
+ slowPoll(cm);
+
+ // Try to detect the user choosing select-all
+ if (display.input.selectionStart != null) {
+ if (!ie || ie_lt9) prepareSelectAllHack();
+ clearTimeout(detectingSelectAll);
+ var i = 0, poll = function(){
+ if (display.prevInput == "\u200b" && display.input.selectionStart == 0)
+ operation(cm, commands.selectAll)(cm);
+ else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
+ else resetInput(cm);
+ };
+ detectingSelectAll = setTimeout(poll, 200);
+ }
+ }
+
+ if (ie && !ie_lt9) prepareSelectAllHack();
+ if (captureMiddleClick) {
+ e_stop(e);
+ var mouseup = function() {
+ off(window, "mouseup", mouseup);
+ setTimeout(rehide, 20);
+ };
+ on(window, "mouseup", mouseup);
+ } else {
+ setTimeout(rehide, 50);
+ }
+ }
+
+ // UPDATING
+
+ var changeEnd = CodeMirror.changeEnd = function(change) {
+ if (!change.text) return change.to;
+ return Pos(change.from.line + change.text.length - 1,
+ lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
+ };
+
+ // Make sure a position will be valid after the given change.
+ function clipPostChange(doc, change, pos) {
+ if (!posLess(change.from, pos)) return clipPos(doc, pos);
+ var diff = (change.text.length - 1) - (change.to.line - change.from.line);
+ if (pos.line > change.to.line + diff) {
+ var preLine = pos.line - diff, lastLine = doc.first + doc.size - 1;
+ if (preLine > lastLine) return Pos(lastLine, getLine(doc, lastLine).text.length);
+ return clipToLen(pos, getLine(doc, preLine).text.length);
+ }
+ if (pos.line == change.to.line + diff)
+ return clipToLen(pos, lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0) +
+ getLine(doc, change.to.line).text.length - change.to.ch);
+ var inside = pos.line - change.from.line;
+ return clipToLen(pos, change.text[inside].length + (inside ? 0 : change.from.ch));
+ }
+
+ // Hint can be null|"end"|"start"|"around"|{anchor,head}
+ function computeSelAfterChange(doc, change, hint) {
+ if (hint && typeof hint == "object") // Assumed to be {anchor, head} object
+ return {anchor: clipPostChange(doc, change, hint.anchor),
+ head: clipPostChange(doc, change, hint.head)};
+
+ if (hint == "start") return {anchor: change.from, head: change.from};
+
+ var end = changeEnd(change);
+ if (hint == "around") return {anchor: change.from, head: end};
+ if (hint == "end") return {anchor: end, head: end};
+
+ // hint is null, leave the selection alone as much as possible
+ var adjustPos = function(pos) {
+ if (posLess(pos, change.from)) return pos;
+ if (!posLess(change.to, pos)) return end;
+
+ var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
+ if (pos.line == change.to.line) ch += end.ch - change.to.ch;
+ return Pos(line, ch);
+ };
+ return {anchor: adjustPos(doc.sel.anchor), head: adjustPos(doc.sel.head)};
+ }
+
+ function filterChange(doc, change, update) {
+ var obj = {
+ canceled: false,
+ from: change.from,
+ to: change.to,
+ text: change.text,
+ origin: change.origin,
+ cancel: function() { this.canceled = true; }
+ };
+ if (update) obj.update = function(from, to, text, origin) {
+ if (from) this.from = clipPos(doc, from);
+ if (to) this.to = clipPos(doc, to);
+ if (text) this.text = text;
+ if (origin !== undefined) this.origin = origin;
+ };
+ signal(doc, "beforeChange", doc, obj);
+ if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);
+
+ if (obj.canceled) return null;
+ return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
+ }
+
+ // Replace the range from from to to by the strings in replacement.
+ // change is a {from, to, text [, origin]} object
+ function makeChange(doc, change, selUpdate, ignoreReadOnly) {
+ if (doc.cm) {
+ if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, selUpdate, ignoreReadOnly);
+ if (doc.cm.state.suppressEdits) return;
+ }
+
+ if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
+ change = filterChange(doc, change, true);
+ if (!change) return;
+ }
+
+ // Possibly split or suppress the update based on the presence
+ // of read-only spans in its range.
+ var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
+ if (split) {
+ for (var i = split.length - 1; i >= 1; --i)
+ makeChangeNoReadonly(doc, {from: split[i].from, to: split[i].to, text: [""]});
+ if (split.length)
+ makeChangeNoReadonly(doc, {from: split[0].from, to: split[0].to, text: change.text}, selUpdate);
+ } else {
+ makeChangeNoReadonly(doc, change, selUpdate);
+ }
+ }
+
+ function makeChangeNoReadonly(doc, change, selUpdate) {
+ if (change.text.length == 1 && change.text[0] == "" && posEq(change.from, change.to)) return;
+ var selAfter = computeSelAfterChange(doc, change, selUpdate);
+ addToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
+
+ makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
+ var rebased = [];
+
+ linkedDocs(doc, function(doc, sharedHist) {
+ if (!sharedHist && indexOf(rebased, doc.history) == -1) {
+ rebaseHist(doc.history, change);
+ rebased.push(doc.history);
+ }
+ makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
+ });
+ }
+
+ function makeChangeFromHistory(doc, type) {
+ if (doc.cm && doc.cm.state.suppressEdits) return;
+
+ var hist = doc.history;
+ var event = (type == "undo" ? hist.done : hist.undone).pop();
+ if (!event) return;
+
+ var anti = {changes: [], anchorBefore: event.anchorAfter, headBefore: event.headAfter,
+ anchorAfter: event.anchorBefore, headAfter: event.headBefore,
+ generation: hist.generation};
+ (type == "undo" ? hist.undone : hist.done).push(anti);
+ hist.generation = event.generation || ++hist.maxGeneration;
+
+ var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
+
+ for (var i = event.changes.length - 1; i >= 0; --i) {
+ var change = event.changes[i];
+ change.origin = type;
+ if (filter && !filterChange(doc, change, false)) {
+ (type == "undo" ? hist.done : hist.undone).length = 0;
+ return;
+ }
+
+ anti.changes.push(historyChangeFromChange(doc, change));
+
+ var after = i ? computeSelAfterChange(doc, change, null)
+ : {anchor: event.anchorBefore, head: event.headBefore};
+ makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
+ var rebased = [];
+
+ linkedDocs(doc, function(doc, sharedHist) {
+ if (!sharedHist && indexOf(rebased, doc.history) == -1) {
+ rebaseHist(doc.history, change);
+ rebased.push(doc.history);
+ }
+ makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
+ });
+ }
+ }
+
+ function shiftDoc(doc, distance) {
+ function shiftPos(pos) {return Pos(pos.line + distance, pos.ch);}
+ doc.first += distance;
+ if (doc.cm) regChange(doc.cm, doc.first, doc.first, distance);
+ doc.sel.head = shiftPos(doc.sel.head); doc.sel.anchor = shiftPos(doc.sel.anchor);
+ doc.sel.from = shiftPos(doc.sel.from); doc.sel.to = shiftPos(doc.sel.to);
+ }
+
+ function makeChangeSingleDoc(doc, change, selAfter, spans) {
+ if (doc.cm && !doc.cm.curOp)
+ return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);
+
+ if (change.to.line < doc.first) {
+ shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
+ return;
+ }
+ if (change.from.line > doc.lastLine()) return;
+
+ // Clip the change to the size of this doc
+ if (change.from.line < doc.first) {
+ var shift = change.text.length - 1 - (doc.first - change.from.line);
+ shiftDoc(doc, shift);
+ change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
+ text: [lst(change.text)], origin: change.origin};
+ }
+ var last = doc.lastLine();
+ if (change.to.line > last) {
+ change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
+ text: [change.text[0]], origin: change.origin};
+ }
+
+ change.removed = getBetween(doc, change.from, change.to);
+
+ if (!selAfter) selAfter = computeSelAfterChange(doc, change, null);
+ if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans, selAfter);
+ else updateDoc(doc, change, spans, selAfter);
+ }
+
+ function makeChangeSingleDocInEditor(cm, change, spans, selAfter) {
+ var doc = cm.doc, display = cm.display, from = change.from, to = change.to;
+
+ var recomputeMaxLength = false, checkWidthStart = from.line;
+ if (!cm.options.lineWrapping) {
+ checkWidthStart = lineNo(visualLine(doc, getLine(doc, from.line)));
+ doc.iter(checkWidthStart, to.line + 1, function(line) {
+ if (line == display.maxLine) {
+ recomputeMaxLength = true;
+ return true;
+ }
+ });
+ }
+
+ if (!posLess(doc.sel.head, change.from) && !posLess(change.to, doc.sel.head))
+ cm.curOp.cursorActivity = true;
+
+ updateDoc(doc, change, spans, selAfter, estimateHeight(cm));
+
+ if (!cm.options.lineWrapping) {
+ doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
+ var len = lineLength(doc, line);
+ if (len > display.maxLineLength) {
+ display.maxLine = line;
+ display.maxLineLength = len;
+ display.maxLineChanged = true;
+ recomputeMaxLength = false;
+ }
+ });
+ if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
+ }
+
+ // Adjust frontier, schedule worker
+ doc.frontier = Math.min(doc.frontier, from.line);
+ startWorker(cm, 400);
+
+ var lendiff = change.text.length - (to.line - from.line) - 1;
+ // Remember that these lines changed, for updating the display
+ regChange(cm, from.line, to.line + 1, lendiff);
+
+ if (hasHandler(cm, "change")) {
+ var changeObj = {from: from, to: to,
+ text: change.text,
+ removed: change.removed,
+ origin: change.origin};
+ if (cm.curOp.textChanged) {
+ for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
+ cur.next = changeObj;
+ } else cm.curOp.textChanged = changeObj;
+ }
+ }
+
+ function replaceRange(doc, code, from, to, origin) {
+ if (!to) to = from;
+ if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
+ if (typeof code == "string") code = splitLines(code);
+ makeChange(doc, {from: from, to: to, text: code, origin: origin}, null);
+ }
+
+ // POSITION OBJECT
+
+ function Pos(line, ch) {
+ if (!(this instanceof Pos)) return new Pos(line, ch);
+ this.line = line; this.ch = ch;
+ }
+ CodeMirror.Pos = Pos;
+
+ function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
+ function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
+ function cmp(a, b) {return a.line - b.line || a.ch - b.ch;}
+ function copyPos(x) {return Pos(x.line, x.ch);}
+
+ // SELECTION
+
+ function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
+ function clipPos(doc, pos) {
+ if (pos.line < doc.first) return Pos(doc.first, 0);
+ var last = doc.first + doc.size - 1;
+ if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
+ return clipToLen(pos, getLine(doc, pos.line).text.length);
+ }
+ function clipToLen(pos, linelen) {
+ var ch = pos.ch;
+ if (ch == null || ch > linelen) return Pos(pos.line, linelen);
+ else if (ch < 0) return Pos(pos.line, 0);
+ else return pos;
+ }
+ function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
+
+ // If shift is held, this will move the selection anchor. Otherwise,
+ // it'll set the whole selection.
+ function extendSelection(doc, pos, other, bias) {
+ if (doc.sel.shift || doc.sel.extend) {
+ var anchor = doc.sel.anchor;
+ if (other) {
+ var posBefore = posLess(pos, anchor);
+ if (posBefore != posLess(other, anchor)) {
+ anchor = pos;
+ pos = other;
+ } else if (posBefore != posLess(pos, other)) {
+ pos = other;
+ }
+ }
+ setSelection(doc, anchor, pos, bias);
+ } else {
+ setSelection(doc, pos, other || pos, bias);
+ }
+ if (doc.cm) doc.cm.curOp.userSelChange = true;
+ }
+
+ function filterSelectionChange(doc, anchor, head) {
+ var obj = {anchor: anchor, head: head};
+ signal(doc, "beforeSelectionChange", doc, obj);
+ if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
+ obj.anchor = clipPos(doc, obj.anchor); obj.head = clipPos(doc, obj.head);
+ return obj;
+ }
+
+ // Update the selection. Last two args are only used by
+ // updateDoc, since they have to be expressed in the line
+ // numbers before the update.
+ function setSelection(doc, anchor, head, bias, checkAtomic) {
+ if (!checkAtomic && hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange")) {
+ var filtered = filterSelectionChange(doc, anchor, head);
+ head = filtered.head;
+ anchor = filtered.anchor;
+ }
+
+ var sel = doc.sel;
+ sel.goalColumn = null;
+ if (bias == null) bias = posLess(head, sel.head) ? -1 : 1;
+ // Skip over atomic spans.
+ if (checkAtomic || !posEq(anchor, sel.anchor))
+ anchor = skipAtomic(doc, anchor, bias, checkAtomic != "push");
+ if (checkAtomic || !posEq(head, sel.head))
+ head = skipAtomic(doc, head, bias, checkAtomic != "push");
+
+ if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return;
+
+ sel.anchor = anchor; sel.head = head;
+ var inv = posLess(head, anchor);
+ sel.from = inv ? head : anchor;
+ sel.to = inv ? anchor : head;
+
+ if (doc.cm)
+ doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
+ doc.cm.curOp.cursorActivity = true;
+
+ signalLater(doc, "cursorActivity", doc);
+ }
+
+ function reCheckSelection(cm) {
+ setSelection(cm.doc, cm.doc.sel.from, cm.doc.sel.to, null, "push");
+ }
+
+ function skipAtomic(doc, pos, bias, mayClear) {
+ var flipped = false, curPos = pos;
+ var dir = bias || 1;
+ doc.cantEdit = false;
+ search: for (;;) {
+ var line = getLine(doc, curPos.line);
+ if (line.markedSpans) {
+ for (var i = 0; i < line.markedSpans.length; ++i) {
+ var sp = line.markedSpans[i], m = sp.marker;
+ if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
+ (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
+ if (mayClear) {
+ signal(m, "beforeCursorEnter");
+ if (m.explicitlyCleared) {
+ if (!line.markedSpans) break;
+ else {--i; continue;}
+ }
+ }
+ if (!m.atomic) continue;
+ var newPos = m.find()[dir < 0 ? "from" : "to"];
+ if (posEq(newPos, curPos)) {
+ newPos.ch += dir;
+ if (newPos.ch < 0) {
+ if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
+ else newPos = null;
+ } else if (newPos.ch > line.text.length) {
+ if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
+ else newPos = null;
+ }
+ if (!newPos) {
+ if (flipped) {
+ // Driven in a corner -- no valid cursor position found at all
+ // -- try again *with* clearing, if we didn't already
+ if (!mayClear) return skipAtomic(doc, pos, bias, true);
+ // Otherwise, turn off editing until further notice, and return the start of the doc
+ doc.cantEdit = true;
+ return Pos(doc.first, 0);
+ }
+ flipped = true; newPos = pos; dir = -dir;
+ }
+ }
+ curPos = newPos;
+ continue search;
+ }
+ }
+ }
+ return curPos;
+ }
+ }
+
+ // SCROLLING
+
+ function scrollCursorIntoView(cm) {
+ var coords = scrollPosIntoView(cm, cm.doc.sel.head, null, cm.options.cursorScrollMargin);
+ if (!cm.state.focused) return;
+ var display = cm.display, box = getRect(display.sizer), doScroll = null;
+ if (coords.top + box.top < 0) doScroll = true;
+ else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
+ if (doScroll != null && !phantom) {
+ var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
+ (coords.top - display.viewOffset) + "px; height: " +
+ (coords.bottom - coords.top + scrollerCutOff) + "px; left: " +
+ coords.left + "px; width: 2px;");
+ cm.display.lineSpace.appendChild(scrollNode);
+ scrollNode.scrollIntoView(doScroll);
+ cm.display.lineSpace.removeChild(scrollNode);
+ }
+ }
+
+ function scrollPosIntoView(cm, pos, end, margin) {
+ if (margin == null) margin = 0;
+ for (;;) {
+ var changed = false, coords = cursorCoords(cm, pos);
+ var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
+ var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
+ Math.min(coords.top, endCoords.top) - margin,
+ Math.max(coords.left, endCoords.left),
+ Math.max(coords.bottom, endCoords.bottom) + margin);
+ var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
+ if (scrollPos.scrollTop != null) {
+ setScrollTop(cm, scrollPos.scrollTop);
+ if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
+ }
+ if (scrollPos.scrollLeft != null) {
+ setScrollLeft(cm, scrollPos.scrollLeft);
+ if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
+ }
+ if (!changed) return coords;
+ }
+ }
+
+ function scrollIntoView(cm, x1, y1, x2, y2) {
+ var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
+ if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
+ if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
+ }
+
+ function calculateScrollPos(cm, x1, y1, x2, y2) {
+ var display = cm.display, snapMargin = textHeight(cm.display);
+ if (y1 < 0) y1 = 0;
+ var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
+ var docBottom = cm.doc.height + paddingVert(display);
+ var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
+ if (y1 < screentop) {
+ result.scrollTop = atTop ? 0 : y1;
+ } else if (y2 > screentop + screen) {
+ var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
+ if (newTop != screentop) result.scrollTop = newTop;
+ }
+
+ var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
+ x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
+ var gutterw = display.gutters.offsetWidth;
+ var atLeft = x1 < gutterw + 10;
+ if (x1 < screenleft + gutterw || atLeft) {
+ if (atLeft) x1 = 0;
+ result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
+ } else if (x2 > screenw + screenleft - 3) {
+ result.scrollLeft = x2 + 10 - screenw;
+ }
+ return result;
+ }
+
+ function updateScrollPos(cm, left, top) {
+ cm.curOp.updateScrollPos = {scrollLeft: left == null ? cm.doc.scrollLeft : left,
+ scrollTop: top == null ? cm.doc.scrollTop : top};
+ }
+
+ function addToScrollPos(cm, left, top) {
+ var pos = cm.curOp.updateScrollPos || (cm.curOp.updateScrollPos = {scrollLeft: cm.doc.scrollLeft, scrollTop: cm.doc.scrollTop});
+ var scroll = cm.display.scroller;
+ pos.scrollTop = Math.max(0, Math.min(scroll.scrollHeight - scroll.clientHeight, pos.scrollTop + top));
+ pos.scrollLeft = Math.max(0, Math.min(scroll.scrollWidth - scroll.clientWidth, pos.scrollLeft + left));
+ }
+
+ // API UTILITIES
+
+ function indentLine(cm, n, how, aggressive) {
+ var doc = cm.doc;
+ if (how == null) how = "add";
+ if (how == "smart") {
+ if (!cm.doc.mode.indent) how = "prev";
+ else var state = getStateBefore(cm, n);
+ }
+
+ var tabSize = cm.options.tabSize;
+ var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
+ var curSpaceString = line.text.match(/^\s*/)[0], indentation;
+ if (!aggressive && !/\S/.test(line.text)) {
+ indentation = 0;
+ how = "not";
+ } else if (how == "smart") {
+ indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+ if (indentation == Pass) {
+ if (!aggressive) return;
+ how = "prev";
+ }
+ }
+ if (how == "prev") {
+ if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
+ else indentation = 0;
+ } else if (how == "add") {
+ indentation = curSpace + cm.options.indentUnit;
+ } else if (how == "subtract") {
+ indentation = curSpace - cm.options.indentUnit;
+ } else if (typeof how == "number") {
+ indentation = curSpace + how;
+ }
+ indentation = Math.max(0, indentation);
+
+ var indentString = "", pos = 0;
+ if (cm.options.indentWithTabs)
+ for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
+ if (pos < indentation) indentString += spaceStr(indentation - pos);
+
+ if (indentString != curSpaceString)
+ replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
+ else if (doc.sel.head.line == n && doc.sel.head.ch < curSpaceString.length)
+ setSelection(doc, Pos(n, curSpaceString.length), Pos(n, curSpaceString.length), 1);
+ line.stateAfter = null;
+ }
+
+ function changeLine(cm, handle, op) {
+ var no = handle, line = handle, doc = cm.doc;
+ if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
+ else no = lineNo(handle);
+ if (no == null) return null;
+ if (op(line, no)) regChange(cm, no, no + 1);
+ else return null;
+ return line;
+ }
+
+ function findPosH(doc, pos, dir, unit, visually) {
+ var line = pos.line, ch = pos.ch, origDir = dir;
+ var lineObj = getLine(doc, line);
+ var possible = true;
+ function findNextLine() {
+ var l = line + dir;
+ if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
+ line = l;
+ return lineObj = getLine(doc, l);
+ }
+ function moveOnce(boundToLine) {
+ var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
+ if (next == null) {
+ if (!boundToLine && findNextLine()) {
+ if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
+ else ch = dir < 0 ? lineObj.text.length : 0;
+ } else return (possible = false);
+ } else ch = next;
+ return true;
+ }
+
+ if (unit == "char") moveOnce();
+ else if (unit == "column") moveOnce(true);
+ else if (unit == "word" || unit == "group") {
+ var sawType = null, group = unit == "group";
+ for (var first = true;; first = false) {
+ if (dir < 0 && !moveOnce(!first)) break;
+ var cur = lineObj.text.charAt(ch) || "\n";
+ var type = isWordChar(cur) ? "w"
+ : !group ? null
+ : /\s/.test(cur) ? null
+ : "p";
+ if (sawType && sawType != type) {
+ if (dir < 0) {dir = 1; moveOnce();}
+ break;
+ }
+ if (type) sawType = type;
+ if (dir > 0 && !moveOnce(!first)) break;
+ }
+ }
+ var result = skipAtomic(doc, Pos(line, ch), origDir, true);
+ if (!possible) result.hitSide = true;
+ return result;
+ }
+
+ function findPosV(cm, pos, dir, unit) {
+ var doc = cm.doc, x = pos.left, y;
+ if (unit == "page") {
+ var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
+ y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
+ } else if (unit == "line") {
+ y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
+ }
+ for (;;) {
+ var target = coordsChar(cm, x, y);
+ if (!target.outside) break;
+ if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
+ y += dir * 5;
+ }
+ return target;
+ }
+
+ function findWordAt(line, pos) {
+ var start = pos.ch, end = pos.ch;
+ if (line) {
+ if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
+ var startChar = line.charAt(start);
+ var check = isWordChar(startChar) ? isWordChar
+ : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
+ : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
+ while (start > 0 && check(line.charAt(start - 1))) --start;
+ while (end < line.length && check(line.charAt(end))) ++end;
+ }
+ return {from: Pos(pos.line, start), to: Pos(pos.line, end)};
+ }
+
+ function selectLine(cm, line) {
+ extendSelection(cm.doc, Pos(line, 0), clipPos(cm.doc, Pos(line + 1, 0)));
+ }
+
+ // PROTOTYPE
+
+ // The publicly visible API. Note that operation(null, f) means
+ // 'wrap f in an operation, performed on its `this` parameter'
+
+ CodeMirror.prototype = {
+ constructor: CodeMirror,
+ focus: function(){window.focus(); focusInput(this); fastPoll(this);},
+
+ setOption: function(option, value) {
+ var options = this.options, old = options[option];
+ if (options[option] == value && option != "mode") return;
+ options[option] = value;
+ if (optionHandlers.hasOwnProperty(option))
+ operation(this, optionHandlers[option])(this, value, old);
+ },
+
+ getOption: function(option) {return this.options[option];},
+ getDoc: function() {return this.doc;},
+
+ addKeyMap: function(map, bottom) {
+ this.state.keyMaps[bottom ? "push" : "unshift"](map);
+ },
+ removeKeyMap: function(map) {
+ var maps = this.state.keyMaps;
+ for (var i = 0; i < maps.length; ++i)
+ if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) {
+ maps.splice(i, 1);
+ return true;
+ }
+ },
+
+ addOverlay: operation(null, function(spec, options) {
+ var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
+ if (mode.startState) throw new Error("Overlays may not be stateful.");
+ this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
+ this.state.modeGen++;
+ regChange(this);
+ }),
+ removeOverlay: operation(null, function(spec) {
+ var overlays = this.state.overlays;
+ for (var i = 0; i < overlays.length; ++i) {
+ var cur = overlays[i].modeSpec;
+ if (cur == spec || typeof spec == "string" && cur.name == spec) {
+ overlays.splice(i, 1);
+ this.state.modeGen++;
+ regChange(this);
+ return;
+ }
+ }
+ }),
+
+ indentLine: operation(null, function(n, dir, aggressive) {
+ if (typeof dir != "string" && typeof dir != "number") {
+ if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
+ else dir = dir ? "add" : "subtract";
+ }
+ if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
+ }),
+ indentSelection: operation(null, function(how) {
+ var sel = this.doc.sel;
+ if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how, true);
+ var e = sel.to.line - (sel.to.ch ? 0 : 1);
+ for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
+ }),
+
+ // Fetch the parser token for a given character. Useful for hacks
+ // that want to inspect the mode state (say, for completion).
+ getTokenAt: function(pos, precise) {
+ var doc = this.doc;
+ pos = clipPos(doc, pos);
+ var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode;
+ var line = getLine(doc, pos.line);
+ var stream = new StringStream(line.text, this.options.tabSize);
+ while (stream.pos < pos.ch && !stream.eol()) {
+ stream.start = stream.pos;
+ var style = mode.token(stream, state);
+ }
+ return {start: stream.start,
+ end: stream.pos,
+ string: stream.current(),
+ className: style || null, // Deprecated, use 'type' instead
+ type: style || null,
+ state: state};
+ },
+
+ getTokenTypeAt: function(pos) {
+ pos = clipPos(this.doc, pos);
+ var styles = getLineStyles(this, getLine(this.doc, pos.line));
+ var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
+ if (ch == 0) return styles[2];
+ for (;;) {
+ var mid = (before + after) >> 1;
+ if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
+ else if (styles[mid * 2 + 1] < ch) before = mid + 1;
+ else return styles[mid * 2 + 2];
+ }
+ },
+
+ getModeAt: function(pos) {
+ var mode = this.doc.mode;
+ if (!mode.innerMode) return mode;
+ return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
+ },
+
+ getHelper: function(pos, type) {
+ return this.getHelpers(pos, type)[0];
+ },
+
+ getHelpers: function(pos, type) {
+ var found = [];
+ if (!helpers.hasOwnProperty(type)) return helpers;
+ var help = helpers[type], mode = this.getModeAt(pos);
+ if (typeof mode[type] == "string") {
+ if (help[mode[type]]) found.push(help[mode[type]]);
+ } else if (mode[type]) {
+ for (var i = 0; i < mode[type].length; i++) {
+ var val = help[mode[type][i]];
+ if (val) found.push(val);
+ }
+ } else if (mode.helperType && help[mode.helperType]) {
+ found.push(help[mode.helperType]);
+ } else if (help[mode.name]) {
+ found.push(help[mode.name]);
+ }
+ for (var i = 0; i < help._global.length; i++) {
+ var cur = help._global[i];
+ if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
+ found.push(cur.val);
+ }
+ return found;
+ },
+
+ getStateAfter: function(line, precise) {
+ var doc = this.doc;
+ line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
+ return getStateBefore(this, line + 1, precise);
+ },
+
+ cursorCoords: function(start, mode) {
+ var pos, sel = this.doc.sel;
+ if (start == null) pos = sel.head;
+ else if (typeof start == "object") pos = clipPos(this.doc, start);
+ else pos = start ? sel.from : sel.to;
+ return cursorCoords(this, pos, mode || "page");
+ },
+
+ charCoords: function(pos, mode) {
+ return charCoords(this, clipPos(this.doc, pos), mode || "page");
+ },
+
+ coordsChar: function(coords, mode) {
+ coords = fromCoordSystem(this, coords, mode || "page");
+ return coordsChar(this, coords.left, coords.top);
+ },
+
+ lineAtHeight: function(height, mode) {
+ height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
+ return lineAtHeight(this.doc, height + this.display.viewOffset);
+ },
+ heightAtLine: function(line, mode) {
+ var end = false, last = this.doc.first + this.doc.size - 1;
+ if (line < this.doc.first) line = this.doc.first;
+ else if (line > last) { line = last; end = true; }
+ var lineObj = getLine(this.doc, line);
+ return intoCoordSystem(this, getLine(this.doc, line), {top: 0, left: 0}, mode || "page").top +
+ (end ? lineObj.height : 0);
+ },
+
+ defaultTextHeight: function() { return textHeight(this.display); },
+ defaultCharWidth: function() { return charWidth(this.display); },
+
+ setGutterMarker: operation(null, function(line, gutterID, value) {
+ return changeLine(this, line, function(line) {
+ var markers = line.gutterMarkers || (line.gutterMarkers = {});
+ markers[gutterID] = value;
+ if (!value && isEmpty(markers)) line.gutterMarkers = null;
+ return true;
+ });
+ }),
+
+ clearGutter: operation(null, function(gutterID) {
+ var cm = this, doc = cm.doc, i = doc.first;
+ doc.iter(function(line) {
+ if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
+ line.gutterMarkers[gutterID] = null;
+ regChange(cm, i, i + 1);
+ if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
+ }
+ ++i;
+ });
+ }),
+
+ addLineClass: operation(null, function(handle, where, cls) {
+ return changeLine(this, handle, function(line) {
+ var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
+ if (!line[prop]) line[prop] = cls;
+ else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false;
+ else line[prop] += " " + cls;
+ return true;
+ });
+ }),
+
+ removeLineClass: operation(null, function(handle, where, cls) {
+ return changeLine(this, handle, function(line) {
+ var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
+ var cur = line[prop];
+ if (!cur) return false;
+ else if (cls == null) line[prop] = null;
+ else {
+ var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)"));
+ if (!found) return false;
+ var end = found.index + found[0].length;
+ line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
+ }
+ return true;
+ });
+ }),
+
+ addLineWidget: operation(null, function(handle, node, options) {
+ return addLineWidget(this, handle, node, options);
+ }),
+
+ removeLineWidget: function(widget) { widget.clear(); },
+
+ lineInfo: function(line) {
+ if (typeof line == "number") {
+ if (!isLine(this.doc, line)) return null;
+ var n = line;
+ line = getLine(this.doc, line);
+ if (!line) return null;
+ } else {
+ var n = lineNo(line);
+ if (n == null) return null;
+ }
+ return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
+ textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
+ widgets: line.widgets};
+ },
+
+ getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},
+
+ addWidget: function(pos, node, scroll, vert, horiz) {
+ var display = this.display;
+ pos = cursorCoords(this, clipPos(this.doc, pos));
+ var top = pos.bottom, left = pos.left;
+ node.style.position = "absolute";
+ display.sizer.appendChild(node);
+ if (vert == "over") {
+ top = pos.top;
+ } else if (vert == "above" || vert == "near") {
+ var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
+ hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
+ // Default to positioning above (if specified and possible); otherwise default to positioning below
+ if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
+ top = pos.top - node.offsetHeight;
+ else if (pos.bottom + node.offsetHeight <= vspace)
+ top = pos.bottom;
+ if (left + node.offsetWidth > hspace)
+ left = hspace - node.offsetWidth;
+ }
+ node.style.top = top + "px";
+ node.style.left = node.style.right = "";
+ if (horiz == "right") {
+ left = display.sizer.clientWidth - node.offsetWidth;
+ node.style.right = "0px";
+ } else {
+ if (horiz == "left") left = 0;
+ else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
+ node.style.left = left + "px";
+ }
+ if (scroll)
+ scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
+ },
+
+ triggerOnKeyDown: operation(null, onKeyDown),
+ triggerOnKeyPress: operation(null, onKeyPress),
+ triggerOnKeyUp: operation(null, onKeyUp),
+
+ execCommand: function(cmd) {
+ if (commands.hasOwnProperty(cmd))
+ return commands[cmd](this);
+ },
+
+ findPosH: function(from, amount, unit, visually) {
+ var dir = 1;
+ if (amount < 0) { dir = -1; amount = -amount; }
+ for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
+ cur = findPosH(this.doc, cur, dir, unit, visually);
+ if (cur.hitSide) break;
+ }
+ return cur;
+ },
+
+ moveH: operation(null, function(dir, unit) {
+ var sel = this.doc.sel, pos;
+ if (sel.shift || sel.extend || posEq(sel.from, sel.to))
+ pos = findPosH(this.doc, sel.head, dir, unit, this.options.rtlMoveVisually);
+ else
+ pos = dir < 0 ? sel.from : sel.to;
+ extendSelection(this.doc, pos, pos, dir);
+ }),
+
+ deleteH: operation(null, function(dir, unit) {
+ var sel = this.doc.sel;
+ if (!posEq(sel.from, sel.to)) replaceRange(this.doc, "", sel.from, sel.to, "+delete");
+ else replaceRange(this.doc, "", sel.from, findPosH(this.doc, sel.head, dir, unit, false), "+delete");
+ this.curOp.userSelChange = true;
+ }),
+
+ findPosV: function(from, amount, unit, goalColumn) {
+ var dir = 1, x = goalColumn;
+ if (amount < 0) { dir = -1; amount = -amount; }
+ for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
+ var coords = cursorCoords(this, cur, "div");
+ if (x == null) x = coords.left;
+ else coords.left = x;
+ cur = findPosV(this, coords, dir, unit);
+ if (cur.hitSide) break;
+ }
+ return cur;
+ },
+
+ moveV: operation(null, function(dir, unit) {
+ var sel = this.doc.sel, target, goal;
+ if (sel.shift || sel.extend || posEq(sel.from, sel.to)) {
+ var pos = cursorCoords(this, sel.head, "div");
+ if (sel.goalColumn != null) pos.left = sel.goalColumn;
+ target = findPosV(this, pos, dir, unit);
+ if (unit == "page") addToScrollPos(this, 0, charCoords(this, target, "div").top - pos.top);
+ goal = pos.left;
+ } else {
+ target = dir < 0 ? sel.from : sel.to;
+ }
+ extendSelection(this.doc, target, target, dir);
+ if (goal != null) sel.goalColumn = goal;
+ }),
+
+ toggleOverwrite: function(value) {
+ if (value != null && value == this.state.overwrite) return;
+ if (this.state.overwrite = !this.state.overwrite)
+ this.display.cursor.className += " CodeMirror-overwrite";
+ else
+ this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
+
+ signal(this, "overwriteToggle", this, this.state.overwrite);
+ },
+ hasFocus: function() { return document.activeElement == this.display.input; },
+
+ scrollTo: operation(null, function(x, y) {
+ updateScrollPos(this, x, y);
+ }),
+ getScrollInfo: function() {
+ var scroller = this.display.scroller, co = scrollerCutOff;
+ return {left: scroller.scrollLeft, top: scroller.scrollTop,
+ height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
+ clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
+ },
+
+ scrollIntoView: operation(null, function(range, margin) {
+ if (range == null) range = {from: this.doc.sel.head, to: null};
+ else if (typeof range == "number") range = {from: Pos(range, 0), to: null};
+ else if (range.from == null) range = {from: range, to: null};
+ if (!range.to) range.to = range.from;
+ if (!margin) margin = 0;
+
+ var coords = range;
+ if (range.from.line != null) {
+ this.curOp.scrollToPos = {from: range.from, to: range.to, margin: margin};
+ coords = {from: cursorCoords(this, range.from),
+ to: cursorCoords(this, range.to)};
+ }
+ var sPos = calculateScrollPos(this, Math.min(coords.from.left, coords.to.left),
+ Math.min(coords.from.top, coords.to.top) - margin,
+ Math.max(coords.from.right, coords.to.right),
+ Math.max(coords.from.bottom, coords.to.bottom) + margin);
+ updateScrollPos(this, sPos.scrollLeft, sPos.scrollTop);
+ }),
+
+ setSize: operation(null, function(width, height) {
+ function interpret(val) {
+ return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
+ }
+ if (width != null) this.display.wrapper.style.width = interpret(width);
+ if (height != null) this.display.wrapper.style.height = interpret(height);
+ if (this.options.lineWrapping)
+ this.display.measureLineCache.length = this.display.measureLineCachePos = 0;
+ this.curOp.forceUpdate = true;
+ signal(this, "refresh", this);
+ }),
+
+ operation: function(f){return runInOp(this, f);},
+
+ refresh: operation(null, function() {
+ var oldHeight = this.display.cachedTextHeight;
+ clearCaches(this);
+ updateScrollPos(this, this.doc.scrollLeft, this.doc.scrollTop);
+ regChange(this);
+ if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
+ estimateLineHeights(this);
+ signal(this, "refresh", this);
+ }),
+
+ swapDoc: operation(null, function(doc) {
+ var old = this.doc;
+ old.cm = null;
+ attachDoc(this, doc);
+ clearCaches(this);
+ resetInput(this, true);
+ updateScrollPos(this, doc.scrollLeft, doc.scrollTop);
+ signalLater(this, "swapDoc", this, old);
+ return old;
+ }),
+
+ getInputField: function(){return this.display.input;},
+ getWrapperElement: function(){return this.display.wrapper;},
+ getScrollerElement: function(){return this.display.scroller;},
+ getGutterElement: function(){return this.display.gutters;}
+ };
+ eventMixin(CodeMirror);
+
+ // OPTION DEFAULTS
+
+ var optionHandlers = CodeMirror.optionHandlers = {};
+
+ // The default configuration options.
+ var defaults = CodeMirror.defaults = {};
+
+ function option(name, deflt, handle, notOnInit) {
+ CodeMirror.defaults[name] = deflt;
+ if (handle) optionHandlers[name] =
+ notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
+ }
+
+ var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
+
+ // These two are, on init, called from the constructor because they
+ // have to be initialized before the editor can start at all.
+ option("value", "", function(cm, val) {
+ cm.setValue(val);
+ }, true);
+ option("mode", null, function(cm, val) {
+ cm.doc.modeOption = val;
+ loadMode(cm);
+ }, true);
+
+ option("indentUnit", 2, loadMode, true);
+ option("indentWithTabs", false);
+ option("smartIndent", true);
+ option("tabSize", 4, function(cm) {
+ resetModeState(cm);
+ clearCaches(cm);
+ regChange(cm);
+ }, true);
+ option("specialChars", /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/g, function(cm, val) {
+ cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
+ cm.refresh();
+ }, true);
+ option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
+ option("electricChars", true);
+ option("rtlMoveVisually", !windows);
+ option("wholeLineUpdateBefore", true);
+
+ option("theme", "default", function(cm) {
+ themeChanged(cm);
+ guttersChanged(cm);
+ }, true);
+ option("keyMap", "default", keyMapChanged);
+ option("extraKeys", null);
+
+ option("onKeyEvent", null);
+ option("onDragEvent", null);
+
+ option("lineWrapping", false, wrappingChanged, true);
+ option("gutters", [], function(cm) {
+ setGuttersForLineNumbers(cm.options);
+ guttersChanged(cm);
+ }, true);
+ option("fixedGutter", true, function(cm, val) {
+ cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
+ cm.refresh();
+ }, true);
+ option("coverGutterNextToScrollbar", false, updateScrollbars, true);
+ option("lineNumbers", false, function(cm) {
+ setGuttersForLineNumbers(cm.options);
+ guttersChanged(cm);
+ }, true);
+ option("firstLineNumber", 1, guttersChanged, true);
+ option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
+ option("showCursorWhenSelecting", false, updateSelection, true);
+
+ option("resetSelectionOnContextMenu", true);
+
+ option("readOnly", false, function(cm, val) {
+ if (val == "nocursor") {
+ onBlur(cm);
+ cm.display.input.blur();
+ cm.display.disabled = true;
+ } else {
+ cm.display.disabled = false;
+ if (!val) resetInput(cm, true);
+ }
+ });
+ option("disableInput", false, function(cm, val) {if (!val) resetInput(cm, true);}, true);
+ option("dragDrop", true);
+
+ option("cursorBlinkRate", 530);
+ option("cursorScrollMargin", 0);
+ option("cursorHeight", 1);
+ option("workTime", 100);
+ option("workDelay", 100);
+ option("flattenSpans", true, resetModeState, true);
+ option("addModeClass", false, resetModeState, true);
+ option("pollInterval", 100);
+ option("undoDepth", 40, function(cm, val){cm.doc.history.undoDepth = val;});
+ option("historyEventDelay", 500);
+ option("viewportMargin", 10, function(cm){cm.refresh();}, true);
+ option("maxHighlightLength", 10000, resetModeState, true);
+ option("crudeMeasuringFrom", 10000);
+ option("moveInputWithCursor", true, function(cm, val) {
+ if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
+ });
+
+ option("tabindex", null, function(cm, val) {
+ cm.display.input.tabIndex = val || "";
+ });
+ option("autofocus", null);
+
+ // MODE DEFINITION AND QUERYING
+
+ // Known modes, by name and by MIME
+ var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
+
+ CodeMirror.defineMode = function(name, mode) {
+ if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
+ if (arguments.length > 2) {
+ mode.dependencies = [];
+ for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
+ }
+ modes[name] = mode;
+ };
+
+ CodeMirror.defineMIME = function(mime, spec) {
+ mimeModes[mime] = spec;
+ };
+
+ CodeMirror.resolveMode = function(spec) {
+ if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
+ spec = mimeModes[spec];
+ } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
+ var found = mimeModes[spec.name];
+ spec = createObj(found, spec);
+ spec.name = found.name;
+ } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
+ return CodeMirror.resolveMode("application/xml");
+ }
+ if (typeof spec == "string") return {name: spec};
+ else return spec || {name: "null"};
+ };
+
+ CodeMirror.getMode = function(options, spec) {
+ var spec = CodeMirror.resolveMode(spec);
+ var mfactory = modes[spec.name];
+ if (!mfactory) return CodeMirror.getMode(options, "text/plain");
+ var modeObj = mfactory(options, spec);
+ if (modeExtensions.hasOwnProperty(spec.name)) {
+ var exts = modeExtensions[spec.name];
+ for (var prop in exts) {
+ if (!exts.hasOwnProperty(prop)) continue;
+ if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
+ modeObj[prop] = exts[prop];
+ }
+ }
+ modeObj.name = spec.name;
+ if (spec.helperType) modeObj.helperType = spec.helperType;
+ if (spec.modeProps) for (var prop in spec.modeProps)
+ modeObj[prop] = spec.modeProps[prop];
+
+ return modeObj;
+ };
+
+ CodeMirror.defineMode("null", function() {
+ return {token: function(stream) {stream.skipToEnd();}};
+ });
+ CodeMirror.defineMIME("text/plain", "null");
+
+ var modeExtensions = CodeMirror.modeExtensions = {};
+ CodeMirror.extendMode = function(mode, properties) {
+ var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
+ copyObj(properties, exts);
+ };
+
+ // EXTENSIONS
+
+ CodeMirror.defineExtension = function(name, func) {
+ CodeMirror.prototype[name] = func;
+ };
+ CodeMirror.defineDocExtension = function(name, func) {
+ Doc.prototype[name] = func;
+ };
+ CodeMirror.defineOption = option;
+
+ var initHooks = [];
+ CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
+
+ var helpers = CodeMirror.helpers = {};
+ CodeMirror.registerHelper = function(type, name, value) {
+ if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
+ helpers[type][name] = value;
+ };
+ CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
+ CodeMirror.registerHelper(type, name, value);
+ helpers[type]._global.push({pred: predicate, val: value});
+ };
+
+ // UTILITIES
+
+ CodeMirror.isWordChar = isWordChar;
+
+ // MODE STATE HANDLING
+
+ // Utility functions for working with state. Exported because modes
+ // sometimes need to do this.
+ function copyState(mode, state) {
+ if (state === true) return state;
+ if (mode.copyState) return mode.copyState(state);
+ var nstate = {};
+ for (var n in state) {
+ var val = state[n];
+ if (val instanceof Array) val = val.concat([]);
+ nstate[n] = val;
+ }
+ return nstate;
+ }
+ CodeMirror.copyState = copyState;
+
+ function startState(mode, a1, a2) {
+ return mode.startState ? mode.startState(a1, a2) : true;
+ }
+ CodeMirror.startState = startState;
+
+ CodeMirror.innerMode = function(mode, state) {
+ while (mode.innerMode) {
+ var info = mode.innerMode(state);
+ if (!info || info.mode == mode) break;
+ state = info.state;
+ mode = info.mode;
+ }
+ return info || {mode: mode, state: state};
+ };
+
+ // STANDARD COMMANDS
+
+ var commands = CodeMirror.commands = {
+ selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()));},
+ killLine: function(cm) {
+ var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
+ if (!sel && cm.getLine(from.line).length == from.ch)
+ cm.replaceRange("", from, Pos(from.line + 1, 0), "+delete");
+ else cm.replaceRange("", from, sel ? to : Pos(from.line), "+delete");
+ },
+ deleteLine: function(cm) {
+ var l = cm.getCursor().line;
+ cm.replaceRange("", Pos(l, 0), Pos(l), "+delete");
+ },
+ delLineLeft: function(cm) {
+ var cur = cm.getCursor();
+ cm.replaceRange("", Pos(cur.line, 0), cur, "+delete");
+ },
+ undo: function(cm) {cm.undo();},
+ redo: function(cm) {cm.redo();},
+ goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
+ goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
+ goLineStart: function(cm) {
+ cm.extendSelection(lineStart(cm, cm.getCursor().line));
+ },
+ goLineStartSmart: function(cm) {
+ var cur = cm.getCursor(), start = lineStart(cm, cur.line);
+ var line = cm.getLineHandle(start.line);
+ var order = getOrder(line);
+ if (!order || order[0].level == 0) {
+ var firstNonWS = Math.max(0, line.text.search(/\S/));
+ var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
+ cm.extendSelection(Pos(start.line, inWS ? 0 : firstNonWS));
+ } else cm.extendSelection(start);
+ },
+ goLineEnd: function(cm) {
+ cm.extendSelection(lineEnd(cm, cm.getCursor().line));
+ },
+ goLineRight: function(cm) {
+ var top = cm.charCoords(cm.getCursor(), "div").top + 5;
+ cm.extendSelection(cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div"));
+ },
+ goLineLeft: function(cm) {
+ var top = cm.charCoords(cm.getCursor(), "div").top + 5;
+ cm.extendSelection(cm.coordsChar({left: 0, top: top}, "div"));
+ },
+ goLineUp: function(cm) {cm.moveV(-1, "line");},
+ goLineDown: function(cm) {cm.moveV(1, "line");},
+ goPageUp: function(cm) {cm.moveV(-1, "page");},
+ goPageDown: function(cm) {cm.moveV(1, "page");},
+ goCharLeft: function(cm) {cm.moveH(-1, "char");},
+ goCharRight: function(cm) {cm.moveH(1, "char");},
+ goColumnLeft: function(cm) {cm.moveH(-1, "column");},
+ goColumnRight: function(cm) {cm.moveH(1, "column");},
+ goWordLeft: function(cm) {cm.moveH(-1, "word");},
+ goGroupRight: function(cm) {cm.moveH(1, "group");},
+ goGroupLeft: function(cm) {cm.moveH(-1, "group");},
+ goWordRight: function(cm) {cm.moveH(1, "word");},
+ delCharBefore: function(cm) {cm.deleteH(-1, "char");},
+ delCharAfter: function(cm) {cm.deleteH(1, "char");},
+ delWordBefore: function(cm) {cm.deleteH(-1, "word");},
+ delWordAfter: function(cm) {cm.deleteH(1, "word");},
+ delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
+ delGroupAfter: function(cm) {cm.deleteH(1, "group");},
+ indentAuto: function(cm) {cm.indentSelection("smart");},
+ indentMore: function(cm) {cm.indentSelection("add");},
+ indentLess: function(cm) {cm.indentSelection("subtract");},
+ insertTab: function(cm) {
+ cm.replaceSelection("\t", "end", "+input");
+ },
+ defaultTab: function(cm) {
+ if (cm.somethingSelected()) cm.indentSelection("add");
+ else cm.replaceSelection("\t", "end", "+input");
+ },
+ transposeChars: function(cm) {
+ var cur = cm.getCursor(), line = cm.getLine(cur.line);
+ if (cur.ch > 0 && cur.ch < line.length - 1)
+ cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
+ Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
+ },
+ newlineAndIndent: function(cm) {
+ operation(cm, function() {
+ cm.replaceSelection("\n", "end", "+input");
+ cm.indentLine(cm.getCursor().line, null, true);
+ })();
+ },
+ toggleOverwrite: function(cm) {cm.toggleOverwrite();}
+ };
+
+ // STANDARD KEYMAPS
+
+ var keyMap = CodeMirror.keyMap = {};
+ keyMap.basic = {
+ "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
+ "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
+ "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
+ "Tab": "defaultTab", "Shift-Tab": "indentAuto",
+ "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
+ };
+ // Note that the save and find-related commands aren't defined by
+ // default. Unknown commands are simply ignored.
+ keyMap.pcDefault = {
+ "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
+ "Ctrl-Home": "goDocStart", "Ctrl-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
+ "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
+ "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
+ "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
+ "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
+ fallthrough: "basic"
+ };
+ keyMap.macDefault = {
+ "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
+ "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
+ "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore",
+ "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
+ "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
+ "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft",
+ fallthrough: ["basic", "emacsy"]
+ };
+ keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
+ keyMap.emacsy = {
+ "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
+ "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+ "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
+ "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
+ };
+
+ // KEYMAP DISPATCH
+
+ function getKeyMap(val) {
+ if (typeof val == "string") return keyMap[val];
+ else return val;
+ }
+
+ function lookupKey(name, maps, handle) {
+ function lookup(map) {
+ map = getKeyMap(map);
+ var found = map[name];
+ if (found === false) return "stop";
+ if (found != null && handle(found)) return true;
+ if (map.nofallthrough) return "stop";
+
+ var fallthrough = map.fallthrough;
+ if (fallthrough == null) return false;
+ if (Object.prototype.toString.call(fallthrough) != "[object Array]")
+ return lookup(fallthrough);
+ for (var i = 0, e = fallthrough.length; i < e; ++i) {
+ var done = lookup(fallthrough[i]);
+ if (done) return done;
+ }
+ return false;
+ }
+
+ for (var i = 0; i < maps.length; ++i) {
+ var done = lookup(maps[i]);
+ if (done) return done != "stop";
+ }
+ }
+ function isModifierKey(event) {
+ var name = keyNames[event.keyCode];
+ return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
+ }
+ function keyName(event, noShift) {
+ if (opera && event.keyCode == 34 && event["char"]) return false;
+ var name = keyNames[event.keyCode];
+ if (name == null || event.altGraphKey) return false;
+ if (event.altKey) name = "Alt-" + name;
+ if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name;
+ if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
+ if (!noShift && event.shiftKey) name = "Shift-" + name;
+ return name;
+ }
+ CodeMirror.lookupKey = lookupKey;
+ CodeMirror.isModifierKey = isModifierKey;
+ CodeMirror.keyName = keyName;
+
+ // FROMTEXTAREA
+
+ CodeMirror.fromTextArea = function(textarea, options) {
+ if (!options) options = {};
+ options.value = textarea.value;
+ if (!options.tabindex && textarea.tabindex)
+ options.tabindex = textarea.tabindex;
+ if (!options.placeholder && textarea.placeholder)
+ options.placeholder = textarea.placeholder;
+ // Set autofocus to true if this textarea is focused, or if it has
+ // autofocus and no other element is focused.
+ if (options.autofocus == null) {
+ var hasFocus = document.body;
+ // doc.activeElement occasionally throws on IE
+ try { hasFocus = document.activeElement; } catch(e) {}
+ options.autofocus = hasFocus == textarea ||
+ textarea.getAttribute("autofocus") != null && hasFocus == document.body;
+ }
+
+ function save() {textarea.value = cm.getValue();}
+ if (textarea.form) {
+ on(textarea.form, "submit", save);
+ // Deplorable hack to make the submit method do the right thing.
+ if (!options.leaveSubmitMethodAlone) {
+ var form = textarea.form, realSubmit = form.submit;
+ try {
+ var wrappedSubmit = form.submit = function() {
+ save();
+ form.submit = realSubmit;
+ form.submit();
+ form.submit = wrappedSubmit;
+ };
+ } catch(e) {}
+ }
+ }
+
+ textarea.style.display = "none";
+ var cm = CodeMirror(function(node) {
+ textarea.parentNode.insertBefore(node, textarea.nextSibling);
+ }, options);
+ cm.save = save;
+ cm.getTextArea = function() { return textarea; };
+ cm.toTextArea = function() {
+ save();
+ textarea.parentNode.removeChild(cm.getWrapperElement());
+ textarea.style.display = "";
+ if (textarea.form) {
+ off(textarea.form, "submit", save);
+ if (typeof textarea.form.submit == "function")
+ textarea.form.submit = realSubmit;
+ }
+ };
+ return cm;
+ };
+
+ // STRING STREAM
+
+ // Fed to the mode parsers, provides helper functions to make
+ // parsers more succinct.
+
+ // The character stream used by a mode's parser.
+ function StringStream(string, tabSize) {
+ this.pos = this.start = 0;
+ this.string = string;
+ this.tabSize = tabSize || 8;
+ this.lastColumnPos = this.lastColumnValue = 0;
+ this.lineStart = 0;
+ }
+
+ StringStream.prototype = {
+ eol: function() {return this.pos >= this.string.length;},
+ sol: function() {return this.pos == this.lineStart;},
+ peek: function() {return this.string.charAt(this.pos) || undefined;},
+ next: function() {
+ if (this.pos < this.string.length)
+ return this.string.charAt(this.pos++);
+ },
+ eat: function(match) {
+ var ch = this.string.charAt(this.pos);
+ if (typeof match == "string") var ok = ch == match;
+ else var ok = ch && (match.test ? match.test(ch) : match(ch));
+ if (ok) {++this.pos; return ch;}
+ },
+ eatWhile: function(match) {
+ var start = this.pos;
+ while (this.eat(match)){}
+ return this.pos > start;
+ },
+ eatSpace: function() {
+ var start = this.pos;
+ while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
+ return this.pos > start;
+ },
+ skipToEnd: function() {this.pos = this.string.length;},
+ skipTo: function(ch) {
+ var found = this.string.indexOf(ch, this.pos);
+ if (found > -1) {this.pos = found; return true;}
+ },
+ backUp: function(n) {this.pos -= n;},
+ column: function() {
+ if (this.lastColumnPos < this.start) {
+ this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
+ this.lastColumnPos = this.start;
+ }
+ return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
+ },
+ indentation: function() {
+ return countColumn(this.string, null, this.tabSize) -
+ (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
+ },
+ match: function(pattern, consume, caseInsensitive) {
+ if (typeof pattern == "string") {
+ var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
+ var substr = this.string.substr(this.pos, pattern.length);
+ if (cased(substr) == cased(pattern)) {
+ if (consume !== false) this.pos += pattern.length;
+ return true;
+ }
+ } else {
+ var match = this.string.slice(this.pos).match(pattern);
+ if (match && match.index > 0) return null;
+ if (match && consume !== false) this.pos += match[0].length;
+ return match;
+ }
+ },
+ current: function(){return this.string.slice(this.start, this.pos);},
+ hideFirstChars: function(n, inner) {
+ this.lineStart += n;
+ try { return inner(); }
+ finally { this.lineStart -= n; }
+ }
+ };
+ CodeMirror.StringStream = StringStream;
+
+ // TEXTMARKERS
+
+ function TextMarker(doc, type) {
+ this.lines = [];
+ this.type = type;
+ this.doc = doc;
+ }
+ CodeMirror.TextMarker = TextMarker;
+ eventMixin(TextMarker);
+
+ TextMarker.prototype.clear = function() {
+ if (this.explicitlyCleared) return;
+ var cm = this.doc.cm, withOp = cm && !cm.curOp;
+ if (withOp) startOperation(cm);
+ if (hasHandler(this, "clear")) {
+ var found = this.find();
+ if (found) signalLater(this, "clear", found.from, found.to);
+ }
+ var min = null, max = null;
+ for (var i = 0; i < this.lines.length; ++i) {
+ var line = this.lines[i];
+ var span = getMarkedSpanFor(line.markedSpans, this);
+ if (span.to != null) max = lineNo(line);
+ line.markedSpans = removeMarkedSpan(line.markedSpans, span);
+ if (span.from != null)
+ min = lineNo(line);
+ else if (this.collapsed && !lineIsHidden(this.doc, line) && cm)
+ updateLineHeight(line, textHeight(cm.display));
+ }
+ if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
+ var visual = visualLine(cm.doc, this.lines[i]), len = lineLength(cm.doc, visual);
+ if (len > cm.display.maxLineLength) {
+ cm.display.maxLine = visual;
+ cm.display.maxLineLength = len;
+ cm.display.maxLineChanged = true;
+ }
+ }
+
+ if (min != null && cm) regChange(cm, min, max + 1);
+ this.lines.length = 0;
+ this.explicitlyCleared = true;
+ if (this.atomic && this.doc.cantEdit) {
+ this.doc.cantEdit = false;
+ if (cm) reCheckSelection(cm);
+ }
+ if (withOp) endOperation(cm);
+ };
+
+ TextMarker.prototype.find = function(bothSides) {
+ var from, to;
+ for (var i = 0; i < this.lines.length; ++i) {
+ var line = this.lines[i];
+ var span = getMarkedSpanFor(line.markedSpans, this);
+ if (span.from != null || span.to != null) {
+ var found = lineNo(line);
+ if (span.from != null) from = Pos(found, span.from);
+ if (span.to != null) to = Pos(found, span.to);
+ }
+ }
+ if (this.type == "bookmark" && !bothSides) return from;
+ return from && {from: from, to: to};
+ };
+
+ TextMarker.prototype.changed = function() {
+ var pos = this.find(), cm = this.doc.cm;
+ if (!pos || !cm) return;
+ if (this.type != "bookmark") pos = pos.from;
+ var line = getLine(this.doc, pos.line);
+ clearCachedMeasurement(cm, line);
+ if (pos.line >= cm.display.showingFrom && pos.line < cm.display.showingTo) {
+ for (var node = cm.display.lineDiv.firstChild; node; node = node.nextSibling) if (node.lineObj == line) {
+ if (node.offsetHeight != line.height) updateLineHeight(line, node.offsetHeight);
+ break;
+ }
+ runInOp(cm, function() {
+ cm.curOp.selectionChanged = cm.curOp.forceUpdate = cm.curOp.updateMaxLine = true;
+ });
+ }
+ };
+
+ TextMarker.prototype.attachLine = function(line) {
+ if (!this.lines.length && this.doc.cm) {
+ var op = this.doc.cm.curOp;
+ if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
+ (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
+ }
+ this.lines.push(line);
+ };
+ TextMarker.prototype.detachLine = function(line) {
+ this.lines.splice(indexOf(this.lines, line), 1);
+ if (!this.lines.length && this.doc.cm) {
+ var op = this.doc.cm.curOp;
+ (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
+ }
+ };
+
+ var nextMarkerId = 0;
+
+ function markText(doc, from, to, options, type) {
+ if (options && options.shared) return markTextShared(doc, from, to, options, type);
+ if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
+
+ var marker = new TextMarker(doc, type);
+ if (options) copyObj(options, marker);
+ if (posLess(to, from) || posEq(from, to) && marker.clearWhenEmpty !== false)
+ return marker;
+ if (marker.replacedWith) {
+ marker.collapsed = true;
+ marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
+ if (!options.handleMouseEvents) marker.replacedWith.ignoreEvents = true;
+ }
+ if (marker.collapsed) {
+ if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
+ from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
+ throw new Error("Inserting collapsed marker partially overlapping an existing one");
+ sawCollapsedSpans = true;
+ }
+
+ if (marker.addToHistory)
+ addToHistory(doc, {from: from, to: to, origin: "markText"},
+ {head: doc.sel.head, anchor: doc.sel.anchor}, NaN);
+
+ var curLine = from.line, cm = doc.cm, updateMaxLine;
+ doc.iter(curLine, to.line + 1, function(line) {
+ if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(doc, line) == cm.display.maxLine)
+ updateMaxLine = true;
+ var span = {from: null, to: null, marker: marker};
+ if (curLine == from.line) span.from = from.ch;
+ if (curLine == to.line) span.to = to.ch;
+ if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
+ addMarkedSpan(line, span);
+ ++curLine;
+ });
+ if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
+ if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
+ });
+
+ if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });
+
+ if (marker.readOnly) {
+ sawReadOnlySpans = true;
+ if (doc.history.done.length || doc.history.undone.length)
+ doc.clearHistory();
+ }
+ if (marker.collapsed) {
+ marker.id = ++nextMarkerId;
+ marker.atomic = true;
+ }
+ if (cm) {
+ if (updateMaxLine) cm.curOp.updateMaxLine = true;
+ if (marker.className || marker.title || marker.startStyle || marker.endStyle || marker.collapsed)
+ regChange(cm, from.line, to.line + 1);
+ if (marker.atomic) reCheckSelection(cm);
+ }
+ return marker;
+ }
+
+ // SHARED TEXTMARKERS
+
+ function SharedTextMarker(markers, primary) {
+ this.markers = markers;
+ this.primary = primary;
+ for (var i = 0, me = this; i < markers.length; ++i) {
+ markers[i].parent = this;
+ on(markers[i], "clear", function(){me.clear();});
+ }
+ }
+ CodeMirror.SharedTextMarker = SharedTextMarker;
+ eventMixin(SharedTextMarker);
+
+ SharedTextMarker.prototype.clear = function() {
+ if (this.explicitlyCleared) return;
+ this.explicitlyCleared = true;
+ for (var i = 0; i < this.markers.length; ++i)
+ this.markers[i].clear();
+ signalLater(this, "clear");
+ };
+ SharedTextMarker.prototype.find = function() {
+ return this.primary.find();
+ };
+
+ function markTextShared(doc, from, to, options, type) {
+ options = copyObj(options);
+ options.shared = false;
+ var markers = [markText(doc, from, to, options, type)], primary = markers[0];
+ var widget = options.replacedWith;
+ linkedDocs(doc, function(doc) {
+ if (widget) options.replacedWith = widget.cloneNode(true);
+ markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
+ for (var i = 0; i < doc.linked.length; ++i)
+ if (doc.linked[i].isParent) return;
+ primary = lst(markers);
+ });
+ return new SharedTextMarker(markers, primary);
+ }
+
+ // TEXTMARKER SPANS
+
+ function getMarkedSpanFor(spans, marker) {
+ if (spans) for (var i = 0; i < spans.length; ++i) {
+ var span = spans[i];
+ if (span.marker == marker) return span;
+ }
+ }
+ function removeMarkedSpan(spans, span) {
+ for (var r, i = 0; i < spans.length; ++i)
+ if (spans[i] != span) (r || (r = [])).push(spans[i]);
+ return r;
+ }
+ function addMarkedSpan(line, span) {
+ line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
+ span.marker.attachLine(line);
+ }
+
+ function markedSpansBefore(old, startCh, isInsert) {
+ if (old) for (var i = 0, nw; i < old.length; ++i) {
+ var span = old[i], marker = span.marker;
+ var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
+ if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
+ var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
+ (nw || (nw = [])).push({from: span.from,
+ to: endsAfter ? null : span.to,
+ marker: marker});
+ }
+ }
+ return nw;
+ }
+
+ function markedSpansAfter(old, endCh, isInsert) {
+ if (old) for (var i = 0, nw; i < old.length; ++i) {
+ var span = old[i], marker = span.marker;
+ var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
+ if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
+ var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
+ (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
+ to: span.to == null ? null : span.to - endCh,
+ marker: marker});
+ }
+ }
+ return nw;
+ }
+
+ function stretchSpansOverChange(doc, change) {
+ var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
+ var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
+ if (!oldFirst && !oldLast) return null;
+
+ var startCh = change.from.ch, endCh = change.to.ch, isInsert = posEq(change.from, change.to);
+ // Get the spans that 'stick out' on both sides
+ var first = markedSpansBefore(oldFirst, startCh, isInsert);
+ var last = markedSpansAfter(oldLast, endCh, isInsert);
+
+ // Next, merge those two ends
+ var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
+ if (first) {
+ // Fix up .to properties of first
+ for (var i = 0; i < first.length; ++i) {
+ var span = first[i];
+ if (span.to == null) {
+ var found = getMarkedSpanFor(last, span.marker);
+ if (!found) span.to = startCh;
+ else if (sameLine) span.to = found.to == null ? null : found.to + offset;
+ }
+ }
+ }
+ if (last) {
+ // Fix up .from in last (or move them into first in case of sameLine)
+ for (var i = 0; i < last.length; ++i) {
+ var span = last[i];
+ if (span.to != null) span.to += offset;
+ if (span.from == null) {
+ var found = getMarkedSpanFor(first, span.marker);
+ if (!found) {
+ span.from = offset;
+ if (sameLine) (first || (first = [])).push(span);
+ }
+ } else {
+ span.from += offset;
+ if (sameLine) (first || (first = [])).push(span);
+ }
+ }
+ }
+ // Make sure we didn't create any zero-length spans
+ if (first) first = clearEmptySpans(first);
+ if (last && last != first) last = clearEmptySpans(last);
+
+ var newMarkers = [first];
+ if (!sameLine) {
+ // Fill gap with whole-line-spans
+ var gap = change.text.length - 2, gapMarkers;
+ if (gap > 0 && first)
+ for (var i = 0; i < first.length; ++i)
+ if (first[i].to == null)
+ (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
+ for (var i = 0; i < gap; ++i)
+ newMarkers.push(gapMarkers);
+ newMarkers.push(last);
+ }
+ return newMarkers;
+ }
+
+ function clearEmptySpans(spans) {
+ for (var i = 0; i < spans.length; ++i) {
+ var span = spans[i];
+ if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
+ spans.splice(i--, 1);
+ }
+ if (!spans.length) return null;
+ return spans;
+ }
+
+ function mergeOldSpans(doc, change) {
+ var old = getOldSpans(doc, change);
+ var stretched = stretchSpansOverChange(doc, change);
+ if (!old) return stretched;
+ if (!stretched) return old;
+
+ for (var i = 0; i < old.length; ++i) {
+ var oldCur = old[i], stretchCur = stretched[i];
+ if (oldCur && stretchCur) {
+ spans: for (var j = 0; j < stretchCur.length; ++j) {
+ var span = stretchCur[j];
+ for (var k = 0; k < oldCur.length; ++k)
+ if (oldCur[k].marker == span.marker) continue spans;
+ oldCur.push(span);
+ }
+ } else if (stretchCur) {
+ old[i] = stretchCur;
+ }
+ }
+ return old;
+ }
+
+ function removeReadOnlyRanges(doc, from, to) {
+ var markers = null;
+ doc.iter(from.line, to.line + 1, function(line) {
+ if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
+ var mark = line.markedSpans[i].marker;
+ if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
+ (markers || (markers = [])).push(mark);
+ }
+ });
+ if (!markers) return null;
+ var parts = [{from: from, to: to}];
+ for (var i = 0; i < markers.length; ++i) {
+ var mk = markers[i], m = mk.find();
+ for (var j = 0; j < parts.length; ++j) {
+ var p = parts[j];
+ if (posLess(p.to, m.from) || posLess(m.to, p.from)) continue;
+ var newParts = [j, 1];
+ if (posLess(p.from, m.from) || !mk.inclusiveLeft && posEq(p.from, m.from))
+ newParts.push({from: p.from, to: m.from});
+ if (posLess(m.to, p.to) || !mk.inclusiveRight && posEq(p.to, m.to))
+ newParts.push({from: m.to, to: p.to});
+ parts.splice.apply(parts, newParts);
+ j += newParts.length - 1;
+ }
+ }
+ return parts;
+ }
+
+ function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
+ function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }
+
+ function compareCollapsedMarkers(a, b) {
+ var lenDiff = a.lines.length - b.lines.length;
+ if (lenDiff != 0) return lenDiff;
+ var aPos = a.find(), bPos = b.find();
+ var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
+ if (fromCmp) return -fromCmp;
+ var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
+ if (toCmp) return toCmp;
+ return b.id - a.id;
+ }
+
+ function collapsedSpanAtSide(line, start) {
+ var sps = sawCollapsedSpans && line.markedSpans, found;
+ if (sps) for (var sp, i = 0; i < sps.length; ++i) {
+ sp = sps[i];
+ if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
+ (!found || compareCollapsedMarkers(found, sp.marker) < 0))
+ found = sp.marker;
+ }
+ return found;
+ }
+ function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
+ function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }
+
+ function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
+ var line = getLine(doc, lineNo);
+ var sps = sawCollapsedSpans && line.markedSpans;
+ if (sps) for (var i = 0; i < sps.length; ++i) {
+ var sp = sps[i];
+ if (!sp.marker.collapsed) continue;
+ var found = sp.marker.find(true);
+ var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
+ var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
+ if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
+ if (fromCmp <= 0 && (cmp(found.to, from) || extraRight(sp.marker) - extraLeft(marker)) > 0 ||
+ fromCmp >= 0 && (cmp(found.from, to) || extraLeft(sp.marker) - extraRight(marker)) < 0)
+ return true;
+ }
+ }
+
+ function visualLine(doc, line) {
+ var merged;
+ while (merged = collapsedSpanAtStart(line))
+ line = getLine(doc, merged.find().from.line);
+ return line;
+ }
+
+ function lineIsHidden(doc, line) {
+ var sps = sawCollapsedSpans && line.markedSpans;
+ if (sps) for (var sp, i = 0; i < sps.length; ++i) {
+ sp = sps[i];
+ if (!sp.marker.collapsed) continue;
+ if (sp.from == null) return true;
+ if (sp.marker.replacedWith) continue;
+ if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
+ return true;
+ }
+ }
+ function lineIsHiddenInner(doc, line, span) {
+ if (span.to == null) {
+ var end = span.marker.find().to, endLine = getLine(doc, end.line);
+ return lineIsHiddenInner(doc, endLine, getMarkedSpanFor(endLine.markedSpans, span.marker));
+ }
+ if (span.marker.inclusiveRight && span.to == line.text.length)
+ return true;
+ for (var sp, i = 0; i < line.markedSpans.length; ++i) {
+ sp = line.markedSpans[i];
+ if (sp.marker.collapsed && !sp.marker.replacedWith && sp.from == span.to &&
+ (sp.to == null || sp.to != span.from) &&
+ (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
+ lineIsHiddenInner(doc, line, sp)) return true;
+ }
+ }
+
+ function detachMarkedSpans(line) {
+ var spans = line.markedSpans;
+ if (!spans) return;
+ for (var i = 0; i < spans.length; ++i)
+ spans[i].marker.detachLine(line);
+ line.markedSpans = null;
+ }
+
+ function attachMarkedSpans(line, spans) {
+ if (!spans) return;
+ for (var i = 0; i < spans.length; ++i)
+ spans[i].marker.attachLine(line);
+ line.markedSpans = spans;
+ }
+
+ // LINE WIDGETS
+
+ var LineWidget = CodeMirror.LineWidget = function(cm, node, options) {
+ if (options) for (var opt in options) if (options.hasOwnProperty(opt))
+ this[opt] = options[opt];
+ this.cm = cm;
+ this.node = node;
+ };
+ eventMixin(LineWidget);
+ function widgetOperation(f) {
+ return function() {
+ var withOp = !this.cm.curOp;
+ if (withOp) startOperation(this.cm);
+ try {var result = f.apply(this, arguments);}
+ finally {if (withOp) endOperation(this.cm);}
+ return result;
+ };
+ }
+ LineWidget.prototype.clear = widgetOperation(function() {
+ var ws = this.line.widgets, no = lineNo(this.line);
+ if (no == null || !ws) return;
+ for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
+ if (!ws.length) this.line.widgets = null;
+ var aboveVisible = heightAtLine(this.cm, this.line) < this.cm.doc.scrollTop;
+ updateLineHeight(this.line, Math.max(0, this.line.height - widgetHeight(this)));
+ if (aboveVisible) addToScrollPos(this.cm, 0, -this.height);
+ regChange(this.cm, no, no + 1);
+ });
+ LineWidget.prototype.changed = widgetOperation(function() {
+ var oldH = this.height;
+ this.height = null;
+ var diff = widgetHeight(this) - oldH;
+ if (!diff) return;
+ updateLineHeight(this.line, this.line.height + diff);
+ var no = lineNo(this.line);
+ regChange(this.cm, no, no + 1);
+ });
+
+ function widgetHeight(widget) {
+ if (widget.height != null) return widget.height;
+ if (!widget.node.parentNode || widget.node.parentNode.nodeType != 1)
+ removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
+ return widget.height = widget.node.offsetHeight;
+ }
+
+ function addLineWidget(cm, handle, node, options) {
+ var widget = new LineWidget(cm, node, options);
+ if (widget.noHScroll) cm.display.alignWidgets = true;
+ changeLine(cm, handle, function(line) {
+ var widgets = line.widgets || (line.widgets = []);
+ if (widget.insertAt == null) widgets.push(widget);
+ else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
+ widget.line = line;
+ if (!lineIsHidden(cm.doc, line) || widget.showIfHidden) {
+ var aboveVisible = heightAtLine(cm, line) < cm.doc.scrollTop;
+ updateLineHeight(line, line.height + widgetHeight(widget));
+ if (aboveVisible) addToScrollPos(cm, 0, widget.height);
+ }
+ return true;
+ });
+ return widget;
+ }
+
+ // LINE DATA STRUCTURE
+
+ // Line objects. These hold state related to a line, including
+ // highlighting info (the styles array).
+ var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
+ this.text = text;
+ attachMarkedSpans(this, markedSpans);
+ this.height = estimateHeight ? estimateHeight(this) : 1;
+ };
+ eventMixin(Line);
+ Line.prototype.lineNo = function() { return lineNo(this); };
+
+ function updateLine(line, text, markedSpans, estimateHeight) {
+ line.text = text;
+ if (line.stateAfter) line.stateAfter = null;
+ if (line.styles) line.styles = null;
+ if (line.order != null) line.order = null;
+ detachMarkedSpans(line);
+ attachMarkedSpans(line, markedSpans);
+ var estHeight = estimateHeight ? estimateHeight(line) : 1;
+ if (estHeight != line.height) updateLineHeight(line, estHeight);
+ }
+
+ function cleanUpLine(line) {
+ line.parent = null;
+ detachMarkedSpans(line);
+ }
+
+ // Run the given mode's parser over a line, update the styles
+ // array, which contains alternating fragments of text and CSS
+ // classes.
+ function runMode(cm, text, mode, state, f, forceToEnd) {
+ var flattenSpans = mode.flattenSpans;
+ if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
+ var curStart = 0, curStyle = null;
+ var stream = new StringStream(text, cm.options.tabSize), style;
+ if (text == "" && mode.blankLine) mode.blankLine(state);
+ while (!stream.eol()) {
+ if (stream.pos > cm.options.maxHighlightLength) {
+ flattenSpans = false;
+ if (forceToEnd) processLine(cm, text, state, stream.pos);
+ stream.pos = text.length;
+ style = null;
+ } else {
+ style = mode.token(stream, state);
+ }
+ if (cm.options.addModeClass) {
+ var mName = CodeMirror.innerMode(mode, state).mode.name;
+ if (mName) style = "m-" + (style ? mName + " " + style : mName);
+ }
+ if (!flattenSpans || curStyle != style) {
+ if (curStart < stream.start) f(stream.start, curStyle);
+ curStart = stream.start; curStyle = style;
+ }
+ stream.start = stream.pos;
+ }
+ while (curStart < stream.pos) {
+ // Webkit seems to refuse to render text nodes longer than 57444 characters
+ var pos = Math.min(stream.pos, curStart + 50000);
+ f(pos, curStyle);
+ curStart = pos;
+ }
+ }
+
+ function highlightLine(cm, line, state, forceToEnd) {
+ // A styles array always starts with a number identifying the
+ // mode/overlays that it is based on (for easy invalidation).
+ var st = [cm.state.modeGen];
+ // Compute the base array of styles
+ runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
+ st.push(end, style);
+ }, forceToEnd);
+
+ // Run overlays, adjust style array.
+ for (var o = 0; o < cm.state.overlays.length; ++o) {
+ var overlay = cm.state.overlays[o], i = 1, at = 0;
+ runMode(cm, line.text, overlay.mode, true, function(end, style) {
+ var start = i;
+ // Ensure there's a token end at the current position, and that i points at it
+ while (at < end) {
+ var i_end = st[i];
+ if (i_end > end)
+ st.splice(i, 1, end, st[i+1], i_end);
+ i += 2;
+ at = Math.min(end, i_end);
+ }
+ if (!style) return;
+ if (overlay.opaque) {
+ st.splice(start, i - start, end, style);
+ i = start + 2;
+ } else {
+ for (; start < i; start += 2) {
+ var cur = st[start+1];
+ st[start+1] = cur ? cur + " " + style : style;
+ }
+ }
+ });
+ }
+
+ return st;
+ }
+
+ function getLineStyles(cm, line) {
+ if (!line.styles || line.styles[0] != cm.state.modeGen)
+ line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
+ return line.styles;
+ }
+
+ // Lightweight form of highlight -- proceed over this line and
+ // update state, but don't save a style array.
+ function processLine(cm, text, state, startAt) {
+ var mode = cm.doc.mode;
+ var stream = new StringStream(text, cm.options.tabSize);
+ stream.start = stream.pos = startAt || 0;
+ if (text == "" && mode.blankLine) mode.blankLine(state);
+ while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
+ mode.token(stream, state);
+ stream.start = stream.pos;
+ }
+ }
+
+ var styleToClassCache = {}, styleToClassCacheWithMode = {};
+ function interpretTokenStyle(style, builder) {
+ if (!style) return null;
+ for (;;) {
+ var lineClass = style.match(/(?:^|\s+)line-(background-)?(\S+)/);
+ if (!lineClass) break;
+ style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length);
+ var prop = lineClass[1] ? "bgClass" : "textClass";
+ if (builder[prop] == null)
+ builder[prop] = lineClass[2];
+ else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop]))
+ builder[prop] += " " + lineClass[2];
+ }
+ if (/^\s*$/.test(style)) return null;
+ var cache = builder.cm.options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
+ return cache[style] ||
+ (cache[style] = style.replace(/\S+/g, "cm-$&"));
+ }
+
+ function buildLineContent(cm, realLine, measure, copyWidgets) {
+ var merged, line = realLine, empty = true;
+ while (merged = collapsedSpanAtStart(line))
+ line = getLine(cm.doc, merged.find().from.line);
+
+ var builder = {pre: elt("pre"), col: 0, pos: 0,
+ measure: null, measuredSomething: false, cm: cm,
+ copyWidgets: copyWidgets};
+
+ do {
+ if (line.text) empty = false;
+ builder.measure = line == realLine && measure;
+ builder.pos = 0;
+ builder.addToken = builder.measure ? buildTokenMeasure : buildToken;
+ if ((ie || webkit) && cm.getOption("lineWrapping"))
+ builder.addToken = buildTokenSplitSpaces(builder.addToken);
+ var next = insertLineContent(line, builder, getLineStyles(cm, line));
+ if (measure && line == realLine && !builder.measuredSomething) {
+ measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure));
+ builder.measuredSomething = true;
+ }
+ if (next) line = getLine(cm.doc, next.to.line);
+ } while (next);
+
+ if (measure && !builder.measuredSomething && !measure[0])
+ measure[0] = builder.pre.appendChild(empty ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure));
+ if (!builder.pre.firstChild && !lineIsHidden(cm.doc, realLine))
+ builder.pre.appendChild(document.createTextNode("\u00a0"));
+
+ var order;
+ // Work around problem with the reported dimensions of single-char
+ // direction spans on IE (issue #1129). See also the comment in
+ // cursorCoords.
+ if (measure && ie && (order = getOrder(line))) {
+ var l = order.length - 1;
+ if (order[l].from == order[l].to) --l;
+ var last = order[l], prev = order[l - 1];
+ if (last.from + 1 == last.to && prev && last.level < prev.level) {
+ var span = measure[builder.pos - 1];
+ if (span) span.parentNode.insertBefore(span.measureRight = zeroWidthElement(cm.display.measure),
+ span.nextSibling);
+ }
+ }
+
+ var textClass = builder.textClass ? builder.textClass + " " + (realLine.textClass || "") : realLine.textClass;
+ if (textClass) builder.pre.className = textClass;
+
+ signal(cm, "renderLine", cm, realLine, builder.pre);
+ return builder;
+ }
+
+ function defaultSpecialCharPlaceholder(ch) {
+ var token = elt("span", "\u2022", "cm-invalidchar");
+ token.title = "\\u" + ch.charCodeAt(0).toString(16);
+ return token;
+ }
+
+ function buildToken(builder, text, style, startStyle, endStyle, title) {
+ if (!text) return;
+ var special = builder.cm.options.specialChars;
+ if (!special.test(text)) {
+ builder.col += text.length;
+ var content = document.createTextNode(text);
+ } else {
+ var content = document.createDocumentFragment(), pos = 0;
+ while (true) {
+ special.lastIndex = pos;
+ var m = special.exec(text);
+ var skipped = m ? m.index - pos : text.length - pos;
+ if (skipped) {
+ content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
+ builder.col += skipped;
+ }
+ if (!m) break;
+ pos += skipped + 1;
+ if (m[0] == "\t") {
+ var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
+ content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
+ builder.col += tabWidth;
+ } else {
+ var token = builder.cm.options.specialCharPlaceholder(m[0]);
+ content.appendChild(token);
+ builder.col += 1;
+ }
+ }
+ }
+ if (style || startStyle || endStyle || builder.measure) {
+ var fullStyle = style || "";
+ if (startStyle) fullStyle += startStyle;
+ if (endStyle) fullStyle += endStyle;
+ var token = elt("span", [content], fullStyle);
+ if (title) token.title = title;
+ return builder.pre.appendChild(token);
+ }
+ builder.pre.appendChild(content);
+ }
+
+ function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
+ var wrapping = builder.cm.options.lineWrapping;
+ for (var i = 0; i < text.length; ++i) {
+ var start = i == 0, to = i + 1;
+ while (to < text.length && isExtendingChar(text.charAt(to))) ++to;
+ var ch = text.slice(i, to);
+ i = to - 1;
+ if (i && wrapping && spanAffectsWrapping(text, i))
+ builder.pre.appendChild(elt("wbr"));
+ var old = builder.measure[builder.pos];
+ var span = builder.measure[builder.pos] =
+ buildToken(builder, ch, style,
+ start && startStyle, i == text.length - 1 && endStyle);
+ if (old) span.leftSide = old.leftSide || old;
+ // In IE single-space nodes wrap differently than spaces
+ // embedded in larger text nodes, except when set to
+ // white-space: normal (issue #1268).
+ if (old_ie && wrapping && ch == " " && i && !/\s/.test(text.charAt(i - 1)) &&
+ i < text.length - 1 && !/\s/.test(text.charAt(i + 1)))
+ span.style.whiteSpace = "normal";
+ builder.pos += ch.length;
+ }
+ if (text.length) builder.measuredSomething = true;
+ }
+
+ function buildTokenSplitSpaces(inner) {
+ function split(old) {
+ var out = " ";
+ for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
+ out += " ";
+ return out;
+ }
+ return function(builder, text, style, startStyle, endStyle, title) {
+ return inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
+ };
+ }
+
+ function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
+ var widget = !ignoreWidget && marker.replacedWith;
+ if (widget) {
+ if (builder.copyWidgets) widget = widget.cloneNode(true);
+ builder.pre.appendChild(widget);
+ if (builder.measure) {
+ if (size) {
+ builder.measure[builder.pos] = widget;
+ } else {
+ var elt = zeroWidthElement(builder.cm.display.measure);
+ if (marker.type == "bookmark" && !marker.insertLeft)
+ builder.measure[builder.pos] = builder.pre.appendChild(elt);
+ else if (builder.measure[builder.pos])
+ return;
+ else
+ builder.measure[builder.pos] = builder.pre.insertBefore(elt, widget);
+ }
+ builder.measuredSomething = true;
+ }
+ }
+ builder.pos += size;
+ }
+
+ // Outputs a number of spans to make up a line, taking highlighting
+ // and marked text into account.
+ function insertLineContent(line, builder, styles) {
+ var spans = line.markedSpans, allText = line.text, at = 0;
+ if (!spans) {
+ for (var i = 1; i < styles.length; i+=2)
+ builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder));
+ return;
+ }
+
+ var len = allText.length, pos = 0, i = 1, text = "", style;
+ var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
+ for (;;) {
+ if (nextChange == pos) { // Update current marker set
+ spanStyle = spanEndStyle = spanStartStyle = title = "";
+ collapsed = null; nextChange = Infinity;
+ var foundBookmarks = [];
+ for (var j = 0; j < spans.length; ++j) {
+ var sp = spans[j], m = sp.marker;
+ if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
+ if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
+ if (m.className) spanStyle += " " + m.className;
+ if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
+ if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
+ if (m.title && !title) title = m.title;
+ if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
+ collapsed = sp;
+ } else if (sp.from > pos && nextChange > sp.from) {
+ nextChange = sp.from;
+ }
+ if (m.type == "bookmark" && sp.from == pos && m.replacedWith) foundBookmarks.push(m);
+ }
+ if (collapsed && (collapsed.from || 0) == pos) {
+ buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
+ collapsed.marker, collapsed.from == null);
+ if (collapsed.to == null) return collapsed.marker.find();
+ }
+ if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
+ buildCollapsedSpan(builder, 0, foundBookmarks[j]);
+ }
+ if (pos >= len) break;
+
+ var upto = Math.min(len, nextChange);
+ while (true) {
+ if (text) {
+ var end = pos + text.length;
+ if (!collapsed) {
+ var tokenText = end > upto ? text.slice(0, upto - pos) : text;
+ builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
+ spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title);
+ }
+ if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
+ pos = end;
+ spanStartStyle = "";
+ }
+ text = allText.slice(at, at = styles[i++]);
+ style = interpretTokenStyle(styles[i++], builder);
+ }
+ }
+ }
+
+ // DOCUMENT DATA STRUCTURE
+
+ function updateDoc(doc, change, markedSpans, selAfter, estimateHeight) {
+ function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
+ function update(line, text, spans) {
+ updateLine(line, text, spans, estimateHeight);
+ signalLater(line, "change", line, change);
+ }
+
+ var from = change.from, to = change.to, text = change.text;
+ var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
+ var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
+
+ // First adjust the line structure
+ if (from.ch == 0 && to.ch == 0 && lastText == "" &&
+ (!doc.cm || doc.cm.options.wholeLineUpdateBefore)) {
+ // This is a whole-line replace. Treated specially to make
+ // sure line objects move the way they are supposed to.
+ for (var i = 0, e = text.length - 1, added = []; i < e; ++i)
+ added.push(new Line(text[i], spansFor(i), estimateHeight));
+ update(lastLine, lastLine.text, lastSpans);
+ if (nlines) doc.remove(from.line, nlines);
+ if (added.length) doc.insert(from.line, added);
+ } else if (firstLine == lastLine) {
+ if (text.length == 1) {
+ update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
+ } else {
+ for (var added = [], i = 1, e = text.length - 1; i < e; ++i)
+ added.push(new Line(text[i], spansFor(i), estimateHeight));
+ added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
+ update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
+ doc.insert(from.line + 1, added);
+ }
+ } else if (text.length == 1) {
+ update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
+ doc.remove(from.line + 1, nlines);
+ } else {
+ update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
+ update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
+ for (var i = 1, e = text.length - 1, added = []; i < e; ++i)
+ added.push(new Line(text[i], spansFor(i), estimateHeight));
+ if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
+ doc.insert(from.line + 1, added);
+ }
+
+ signalLater(doc, "change", doc, change);
+ setSelection(doc, selAfter.anchor, selAfter.head, null, true);
+ }
+
+ function LeafChunk(lines) {
+ this.lines = lines;
+ this.parent = null;
+ for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
+ lines[i].parent = this;
+ height += lines[i].height;
+ }
+ this.height = height;
+ }
+
+ LeafChunk.prototype = {
+ chunkSize: function() { return this.lines.length; },
+ removeInner: function(at, n) {
+ for (var i = at, e = at + n; i < e; ++i) {
+ var line = this.lines[i];
+ this.height -= line.height;
+ cleanUpLine(line);
+ signalLater(line, "delete");
+ }
+ this.lines.splice(at, n);
+ },
+ collapse: function(lines) {
+ lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
+ },
+ insertInner: function(at, lines, height) {
+ this.height += height;
+ this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
+ for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
+ },
+ iterN: function(at, n, op) {
+ for (var e = at + n; at < e; ++at)
+ if (op(this.lines[at])) return true;
+ }
+ };
+
+ function BranchChunk(children) {
+ this.children = children;
+ var size = 0, height = 0;
+ for (var i = 0, e = children.length; i < e; ++i) {
+ var ch = children[i];
+ size += ch.chunkSize(); height += ch.height;
+ ch.parent = this;
+ }
+ this.size = size;
+ this.height = height;
+ this.parent = null;
+ }
+
+ BranchChunk.prototype = {
+ chunkSize: function() { return this.size; },
+ removeInner: function(at, n) {
+ this.size -= n;
+ for (var i = 0; i < this.children.length; ++i) {
+ var child = this.children[i], sz = child.chunkSize();
+ if (at < sz) {
+ var rm = Math.min(n, sz - at), oldHeight = child.height;
+ child.removeInner(at, rm);
+ this.height -= oldHeight - child.height;
+ if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
+ if ((n -= rm) == 0) break;
+ at = 0;
+ } else at -= sz;
+ }
+ if (this.size - n < 25) {
+ var lines = [];
+ this.collapse(lines);
+ this.children = [new LeafChunk(lines)];
+ this.children[0].parent = this;
+ }
+ },
+ collapse: function(lines) {
+ for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
+ },
+ insertInner: function(at, lines, height) {
+ this.size += lines.length;
+ this.height += height;
+ for (var i = 0, e = this.children.length; i < e; ++i) {
+ var child = this.children[i], sz = child.chunkSize();
+ if (at <= sz) {
+ child.insertInner(at, lines, height);
+ if (child.lines && child.lines.length > 50) {
+ while (child.lines.length > 50) {
+ var spilled = child.lines.splice(child.lines.length - 25, 25);
+ var newleaf = new LeafChunk(spilled);
+ child.height -= newleaf.height;
+ this.children.splice(i + 1, 0, newleaf);
+ newleaf.parent = this;
+ }
+ this.maybeSpill();
+ }
+ break;
+ }
+ at -= sz;
+ }
+ },
+ maybeSpill: function() {
+ if (this.children.length <= 10) return;
+ var me = this;
+ do {
+ var spilled = me.children.splice(me.children.length - 5, 5);
+ var sibling = new BranchChunk(spilled);
+ if (!me.parent) { // Become the parent node
+ var copy = new BranchChunk(me.children);
+ copy.parent = me;
+ me.children = [copy, sibling];
+ me = copy;
+ } else {
+ me.size -= sibling.size;
+ me.height -= sibling.height;
+ var myIndex = indexOf(me.parent.children, me);
+ me.parent.children.splice(myIndex + 1, 0, sibling);
+ }
+ sibling.parent = me.parent;
+ } while (me.children.length > 10);
+ me.parent.maybeSpill();
+ },
+ iterN: function(at, n, op) {
+ for (var i = 0, e = this.children.length; i < e; ++i) {
+ var child = this.children[i], sz = child.chunkSize();
+ if (at < sz) {
+ var used = Math.min(n, sz - at);
+ if (child.iterN(at, used, op)) return true;
+ if ((n -= used) == 0) break;
+ at = 0;
+ } else at -= sz;
+ }
+ }
+ };
+
+ var nextDocId = 0;
+ var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
+ if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
+ if (firstLine == null) firstLine = 0;
+
+ BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
+ this.first = firstLine;
+ this.scrollTop = this.scrollLeft = 0;
+ this.cantEdit = false;
+ this.history = makeHistory();
+ this.cleanGeneration = 1;
+ this.frontier = firstLine;
+ var start = Pos(firstLine, 0);
+ this.sel = {from: start, to: start, head: start, anchor: start, shift: false, extend: false, goalColumn: null};
+ this.id = ++nextDocId;
+ this.modeOption = mode;
+
+ if (typeof text == "string") text = splitLines(text);
+ updateDoc(this, {from: start, to: start, text: text}, null, {head: start, anchor: start});
+ };
+
+ Doc.prototype = createObj(BranchChunk.prototype, {
+ constructor: Doc,
+ iter: function(from, to, op) {
+ if (op) this.iterN(from - this.first, to - from, op);
+ else this.iterN(this.first, this.first + this.size, from);
+ },
+
+ insert: function(at, lines) {
+ var height = 0;
+ for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
+ this.insertInner(at - this.first, lines, height);
+ },
+ remove: function(at, n) { this.removeInner(at - this.first, n); },
+
+ getValue: function(lineSep) {
+ var lines = getLines(this, this.first, this.first + this.size);
+ if (lineSep === false) return lines;
+ return lines.join(lineSep || "\n");
+ },
+ setValue: function(code) {
+ var top = Pos(this.first, 0), last = this.first + this.size - 1;
+ makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
+ text: splitLines(code), origin: "setValue"},
+ {head: top, anchor: top}, true);
+ },
+ replaceRange: function(code, from, to, origin) {
+ from = clipPos(this, from);
+ to = to ? clipPos(this, to) : from;
+ replaceRange(this, code, from, to, origin);
+ },
+ getRange: function(from, to, lineSep) {
+ var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
+ if (lineSep === false) return lines;
+ return lines.join(lineSep || "\n");
+ },
+
+ getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
+ setLine: function(line, text) {
+ if (isLine(this, line))
+ replaceRange(this, text, Pos(line, 0), clipPos(this, Pos(line)));
+ },
+ removeLine: function(line) {
+ if (line) replaceRange(this, "", clipPos(this, Pos(line - 1)), clipPos(this, Pos(line)));
+ else replaceRange(this, "", Pos(0, 0), clipPos(this, Pos(1, 0)));
+ },
+
+ getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
+ getLineNumber: function(line) {return lineNo(line);},
+
+ getLineHandleVisualStart: function(line) {
+ if (typeof line == "number") line = getLine(this, line);
+ return visualLine(this, line);
+ },
+
+ lineCount: function() {return this.size;},
+ firstLine: function() {return this.first;},
+ lastLine: function() {return this.first + this.size - 1;},
+
+ clipPos: function(pos) {return clipPos(this, pos);},
+
+ getCursor: function(start) {
+ var sel = this.sel, pos;
+ if (start == null || start == "head") pos = sel.head;
+ else if (start == "anchor") pos = sel.anchor;
+ else if (start == "end" || start === false) pos = sel.to;
+ else pos = sel.from;
+ return copyPos(pos);
+ },
+ somethingSelected: function() {return !posEq(this.sel.head, this.sel.anchor);},
+
+ setCursor: docOperation(function(line, ch, extend) {
+ var pos = clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line);
+ if (extend) extendSelection(this, pos);
+ else setSelection(this, pos, pos);
+ }),
+ setSelection: docOperation(function(anchor, head, bias) {
+ setSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), bias);
+ }),
+ extendSelection: docOperation(function(from, to, bias) {
+ extendSelection(this, clipPos(this, from), to && clipPos(this, to), bias);
+ }),
+
+ getSelection: function(lineSep) {return this.getRange(this.sel.from, this.sel.to, lineSep);},
+ replaceSelection: function(code, collapse, origin) {
+ makeChange(this, {from: this.sel.from, to: this.sel.to, text: splitLines(code), origin: origin}, collapse || "around");
+ },
+ undo: docOperation(function() {makeChangeFromHistory(this, "undo");}),
+ redo: docOperation(function() {makeChangeFromHistory(this, "redo");}),
+
+ setExtending: function(val) {this.sel.extend = val;},
+
+ historySize: function() {
+ var hist = this.history;
+ return {undo: hist.done.length, redo: hist.undone.length};
+ },
+ clearHistory: function() {this.history = makeHistory(this.history.maxGeneration);},
+
+ markClean: function() {
+ this.cleanGeneration = this.changeGeneration(true);
+ },
+ changeGeneration: function(forceSplit) {
+ if (forceSplit)
+ this.history.lastOp = this.history.lastOrigin = null;
+ return this.history.generation;
+ },
+ isClean: function (gen) {
+ return this.history.generation == (gen || this.cleanGeneration);
+ },
+
+ getHistory: function() {
+ return {done: copyHistoryArray(this.history.done),
+ undone: copyHistoryArray(this.history.undone)};
+ },
+ setHistory: function(histData) {
+ var hist = this.history = makeHistory(this.history.maxGeneration);
+ hist.done = histData.done.slice(0);
+ hist.undone = histData.undone.slice(0);
+ },
+
+ markText: function(from, to, options) {
+ return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
+ },
+ setBookmark: function(pos, options) {
+ var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
+ insertLeft: options && options.insertLeft,
+ clearWhenEmpty: false};
+ pos = clipPos(this, pos);
+ return markText(this, pos, pos, realOpts, "bookmark");
+ },
+ findMarksAt: function(pos) {
+ pos = clipPos(this, pos);
+ var markers = [], spans = getLine(this, pos.line).markedSpans;
+ if (spans) for (var i = 0; i < spans.length; ++i) {
+ var span = spans[i];
+ if ((span.from == null || span.from <= pos.ch) &&
+ (span.to == null || span.to >= pos.ch))
+ markers.push(span.marker.parent || span.marker);
+ }
+ return markers;
+ },
+ getAllMarks: function() {
+ var markers = [];
+ this.iter(function(line) {
+ var sps = line.markedSpans;
+ if (sps) for (var i = 0; i < sps.length; ++i)
+ if (sps[i].from != null) markers.push(sps[i].marker);
+ });
+ return markers;
+ },
+
+ posFromIndex: function(off) {
+ var ch, lineNo = this.first;
+ this.iter(function(line) {
+ var sz = line.text.length + 1;
+ if (sz > off) { ch = off; return true; }
+ off -= sz;
+ ++lineNo;
+ });
+ return clipPos(this, Pos(lineNo, ch));
+ },
+ indexFromPos: function (coords) {
+ coords = clipPos(this, coords);
+ var index = coords.ch;
+ if (coords.line < this.first || coords.ch < 0) return 0;
+ this.iter(this.first, coords.line, function (line) {
+ index += line.text.length + 1;
+ });
+ return index;
+ },
+
+ copy: function(copyHistory) {
+ var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
+ doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
+ doc.sel = {from: this.sel.from, to: this.sel.to, head: this.sel.head, anchor: this.sel.anchor,
+ shift: this.sel.shift, extend: false, goalColumn: this.sel.goalColumn};
+ if (copyHistory) {
+ doc.history.undoDepth = this.history.undoDepth;
+ doc.setHistory(this.getHistory());
+ }
+ return doc;
+ },
+
+ linkedDoc: function(options) {
+ if (!options) options = {};
+ var from = this.first, to = this.first + this.size;
+ if (options.from != null && options.from > from) from = options.from;
+ if (options.to != null && options.to < to) to = options.to;
+ var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
+ if (options.sharedHist) copy.history = this.history;
+ (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
+ copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
+ return copy;
+ },
+ unlinkDoc: function(other) {
+ if (other instanceof CodeMirror) other = other.doc;
+ if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
+ var link = this.linked[i];
+ if (link.doc != other) continue;
+ this.linked.splice(i, 1);
+ other.unlinkDoc(this);
+ break;
+ }
+ // If the histories were shared, split them again
+ if (other.history == this.history) {
+ var splitIds = [other.id];
+ linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
+ other.history = makeHistory();
+ other.history.done = copyHistoryArray(this.history.done, splitIds);
+ other.history.undone = copyHistoryArray(this.history.undone, splitIds);
+ }
+ },
+ iterLinkedDocs: function(f) {linkedDocs(this, f);},
+
+ getMode: function() {return this.mode;},
+ getEditor: function() {return this.cm;}
+ });
+
+ Doc.prototype.eachLine = Doc.prototype.iter;
+
+ // The Doc methods that should be available on CodeMirror instances
+ var dontDelegate = "iter insert remove copy getEditor".split(" ");
+ for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
+ CodeMirror.prototype[prop] = (function(method) {
+ return function() {return method.apply(this.doc, arguments);};
+ })(Doc.prototype[prop]);
+
+ eventMixin(Doc);
+
+ function linkedDocs(doc, f, sharedHistOnly) {
+ function propagate(doc, skip, sharedHist) {
+ if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
+ var rel = doc.linked[i];
+ if (rel.doc == skip) continue;
+ var shared = sharedHist && rel.sharedHist;
+ if (sharedHistOnly && !shared) continue;
+ f(rel.doc, shared);
+ propagate(rel.doc, doc, shared);
+ }
+ }
+ propagate(doc, null, true);
+ }
+
+ function attachDoc(cm, doc) {
+ if (doc.cm) throw new Error("This document is already in use.");
+ cm.doc = doc;
+ doc.cm = cm;
+ estimateLineHeights(cm);
+ loadMode(cm);
+ if (!cm.options.lineWrapping) computeMaxLength(cm);
+ cm.options.mode = doc.modeOption;
+ regChange(cm);
+ }
+
+ // LINE UTILITIES
+
+ function getLine(chunk, n) {
+ n -= chunk.first;
+ while (!chunk.lines) {
+ for (var i = 0;; ++i) {
+ var child = chunk.children[i], sz = child.chunkSize();
+ if (n < sz) { chunk = child; break; }
+ n -= sz;
+ }
+ }
+ return chunk.lines[n];
+ }
+
+ function getBetween(doc, start, end) {
+ var out = [], n = start.line;
+ doc.iter(start.line, end.line + 1, function(line) {
+ var text = line.text;
+ if (n == end.line) text = text.slice(0, end.ch);
+ if (n == start.line) text = text.slice(start.ch);
+ out.push(text);
+ ++n;
+ });
+ return out;
+ }
+ function getLines(doc, from, to) {
+ var out = [];
+ doc.iter(from, to, function(line) { out.push(line.text); });
+ return out;
+ }
+
+ function updateLineHeight(line, height) {
+ var diff = height - line.height;
+ for (var n = line; n; n = n.parent) n.height += diff;
+ }
+
+ function lineNo(line) {
+ if (line.parent == null) return null;
+ var cur = line.parent, no = indexOf(cur.lines, line);
+ for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
+ for (var i = 0;; ++i) {
+ if (chunk.children[i] == cur) break;
+ no += chunk.children[i].chunkSize();
+ }
+ }
+ return no + cur.first;
+ }
+
+ function lineAtHeight(chunk, h) {
+ var n = chunk.first;
+ outer: do {
+ for (var i = 0, e = chunk.children.length; i < e; ++i) {
+ var child = chunk.children[i], ch = child.height;
+ if (h < ch) { chunk = child; continue outer; }
+ h -= ch;
+ n += child.chunkSize();
+ }
+ return n;
+ } while (!chunk.lines);
+ for (var i = 0, e = chunk.lines.length; i < e; ++i) {
+ var line = chunk.lines[i], lh = line.height;
+ if (h < lh) break;
+ h -= lh;
+ }
+ return n + i;
+ }
+
+ function heightAtLine(cm, lineObj) {
+ lineObj = visualLine(cm.doc, lineObj);
+
+ var h = 0, chunk = lineObj.parent;
+ for (var i = 0; i < chunk.lines.length; ++i) {
+ var line = chunk.lines[i];
+ if (line == lineObj) break;
+ else h += line.height;
+ }
+ for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
+ for (var i = 0; i < p.children.length; ++i) {
+ var cur = p.children[i];
+ if (cur == chunk) break;
+ else h += cur.height;
+ }
+ }
+ return h;
+ }
+
+ function getOrder(line) {
+ var order = line.order;
+ if (order == null) order = line.order = bidiOrdering(line.text);
+ return order;
+ }
+
+ // HISTORY
+
+ function makeHistory(startGen) {
+ return {
+ // Arrays of history events. Doing something adds an event to
+ // done and clears undo. Undoing moves events from done to
+ // undone, redoing moves them in the other direction.
+ done: [], undone: [], undoDepth: Infinity,
+ // Used to track when changes can be merged into a single undo
+ // event
+ lastTime: 0, lastOp: null, lastOrigin: null,
+ // Used by the isClean() method
+ generation: startGen || 1, maxGeneration: startGen || 1
+ };
+ }
+
+ function attachLocalSpans(doc, change, from, to) {
+ var existing = change["spans_" + doc.id], n = 0;
+ doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
+ if (line.markedSpans)
+ (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
+ ++n;
+ });
+ }
+
+ function historyChangeFromChange(doc, change) {
+ var from = { line: change.from.line, ch: change.from.ch };
+ var histChange = {from: from, to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
+ attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
+ linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
+ return histChange;
+ }
+
+ function addToHistory(doc, change, selAfter, opId) {
+ var hist = doc.history;
+ hist.undone.length = 0;
+ var time = +new Date, cur = lst(hist.done);
+
+ if (cur &&
+ (hist.lastOp == opId ||
+ hist.lastOrigin == change.origin && change.origin &&
+ ((change.origin.charAt(0) == "+" && doc.cm && hist.lastTime > time - doc.cm.options.historyEventDelay) ||
+ change.origin.charAt(0) == "*"))) {
+ // Merge this change into the last event
+ var last = lst(cur.changes);
+ if (posEq(change.from, change.to) && posEq(change.from, last.to)) {
+ // Optimized case for simple insertion -- don't want to add
+ // new changesets for every character typed
+ last.to = changeEnd(change);
+ } else {
+ // Add new sub-event
+ cur.changes.push(historyChangeFromChange(doc, change));
+ }
+ cur.anchorAfter = selAfter.anchor; cur.headAfter = selAfter.head;
+ } else {
+ // Can not be merged, start a new event.
+ cur = {changes: [historyChangeFromChange(doc, change)],
+ generation: hist.generation,
+ anchorBefore: doc.sel.anchor, headBefore: doc.sel.head,
+ anchorAfter: selAfter.anchor, headAfter: selAfter.head};
+ hist.done.push(cur);
+ while (hist.done.length > hist.undoDepth)
+ hist.done.shift();
+ }
+ hist.generation = ++hist.maxGeneration;
+ hist.lastTime = time;
+ hist.lastOp = opId;
+ hist.lastOrigin = change.origin;
+
+ if (!last) signal(doc, "historyAdded");
+ }
+
+ function removeClearedSpans(spans) {
+ if (!spans) return null;
+ for (var i = 0, out; i < spans.length; ++i) {
+ if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
+ else if (out) out.push(spans[i]);
+ }
+ return !out ? spans : out.length ? out : null;
+ }
+
+ function getOldSpans(doc, change) {
+ var found = change["spans_" + doc.id];
+ if (!found) return null;
+ for (var i = 0, nw = []; i < change.text.length; ++i)
+ nw.push(removeClearedSpans(found[i]));
+ return nw;
+ }
+
+ // Used both to provide a JSON-safe object in .getHistory, and, when
+ // detaching a document, to split the history in two
+ function copyHistoryArray(events, newGroup) {
+ for (var i = 0, copy = []; i < events.length; ++i) {
+ var event = events[i], changes = event.changes, newChanges = [];
+ copy.push({changes: newChanges, anchorBefore: event.anchorBefore, headBefore: event.headBefore,
+ anchorAfter: event.anchorAfter, headAfter: event.headAfter});
+ for (var j = 0; j < changes.length; ++j) {
+ var change = changes[j], m;
+ newChanges.push({from: change.from, to: change.to, text: change.text});
+ if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
+ if (indexOf(newGroup, Number(m[1])) > -1) {
+ lst(newChanges)[prop] = change[prop];
+ delete change[prop];
+ }
+ }
+ }
+ }
+ return copy;
+ }
+
+ // Rebasing/resetting history to deal with externally-sourced changes
+
+ function rebaseHistSel(pos, from, to, diff) {
+ if (to < pos.line) {
+ pos.line += diff;
+ } else if (from < pos.line) {
+ pos.line = from;
+ pos.ch = 0;
+ }
+ }
+
+ // Tries to rebase an array of history events given a change in the
+ // document. If the change touches the same lines as the event, the
+ // event, and everything 'behind' it, is discarded. If the change is
+ // before the event, the event's positions are updated. Uses a
+ // copy-on-write scheme for the positions, to avoid having to
+ // reallocate them all on every rebase, but also avoid problems with
+ // shared position objects being unsafely updated.
+ function rebaseHistArray(array, from, to, diff) {
+ for (var i = 0; i < array.length; ++i) {
+ var sub = array[i], ok = true;
+ for (var j = 0; j < sub.changes.length; ++j) {
+ var cur = sub.changes[j];
+ if (!sub.copied) { cur.from = copyPos(cur.from); cur.to = copyPos(cur.to); }
+ if (to < cur.from.line) {
+ cur.from.line += diff;
+ cur.to.line += diff;
+ } else if (from <= cur.to.line) {
+ ok = false;
+ break;
+ }
+ }
+ if (!sub.copied) {
+ sub.anchorBefore = copyPos(sub.anchorBefore); sub.headBefore = copyPos(sub.headBefore);
+ sub.anchorAfter = copyPos(sub.anchorAfter); sub.readAfter = copyPos(sub.headAfter);
+ sub.copied = true;
+ }
+ if (!ok) {
+ array.splice(0, i + 1);
+ i = 0;
+ } else {
+ rebaseHistSel(sub.anchorBefore); rebaseHistSel(sub.headBefore);
+ rebaseHistSel(sub.anchorAfter); rebaseHistSel(sub.headAfter);
+ }
+ }
+ }
+
+ function rebaseHist(hist, change) {
+ var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
+ rebaseHistArray(hist.done, from, to, diff);
+ rebaseHistArray(hist.undone, from, to, diff);
+ }
+
+ // EVENT OPERATORS
+
+ function stopMethod() {e_stop(this);}
+ // Ensure an event has a stop method.
+ function addStop(event) {
+ if (!event.stop) event.stop = stopMethod;
+ return event;
+ }
+
+ function e_preventDefault(e) {
+ if (e.preventDefault) e.preventDefault();
+ else e.returnValue = false;
+ }
+ function e_stopPropagation(e) {
+ if (e.stopPropagation) e.stopPropagation();
+ else e.cancelBubble = true;
+ }
+ function e_defaultPrevented(e) {
+ return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
+ }
+ function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
+ CodeMirror.e_stop = e_stop;
+ CodeMirror.e_preventDefault = e_preventDefault;
+ CodeMirror.e_stopPropagation = e_stopPropagation;
+
+ function e_target(e) {return e.target || e.srcElement;}
+ function e_button(e) {
+ var b = e.which;
+ if (b == null) {
+ if (e.button & 1) b = 1;
+ else if (e.button & 2) b = 3;
+ else if (e.button & 4) b = 2;
+ }
+ if (mac && e.ctrlKey && b == 1) b = 3;
+ return b;
+ }
+
+ // EVENT HANDLING
+
+ function on(emitter, type, f) {
+ if (emitter.addEventListener)
+ emitter.addEventListener(type, f, false);
+ else if (emitter.attachEvent)
+ emitter.attachEvent("on" + type, f);
+ else {
+ var map = emitter._handlers || (emitter._handlers = {});
+ var arr = map[type] || (map[type] = []);
+ arr.push(f);
+ }
+ }
+
+ function off(emitter, type, f) {
+ if (emitter.removeEventListener)
+ emitter.removeEventListener(type, f, false);
+ else if (emitter.detachEvent)
+ emitter.detachEvent("on" + type, f);
+ else {
+ var arr = emitter._handlers && emitter._handlers[type];
+ if (!arr) return;
+ for (var i = 0; i < arr.length; ++i)
+ if (arr[i] == f) { arr.splice(i, 1); break; }
+ }
+ }
+
+ function signal(emitter, type /*, values...*/) {
+ var arr = emitter._handlers && emitter._handlers[type];
+ if (!arr) return;
+ var args = Array.prototype.slice.call(arguments, 2);
+ for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
+ }
+
+ var delayedCallbacks, delayedCallbackDepth = 0;
+ function signalLater(emitter, type /*, values...*/) {
+ var arr = emitter._handlers && emitter._handlers[type];
+ if (!arr) return;
+ var args = Array.prototype.slice.call(arguments, 2);
+ if (!delayedCallbacks) {
+ ++delayedCallbackDepth;
+ delayedCallbacks = [];
+ setTimeout(fireDelayed, 0);
+ }
+ function bnd(f) {return function(){f.apply(null, args);};};
+ for (var i = 0; i < arr.length; ++i)
+ delayedCallbacks.push(bnd(arr[i]));
+ }
+
+ function signalDOMEvent(cm, e, override) {
+ signal(cm, override || e.type, cm, e);
+ return e_defaultPrevented(e) || e.codemirrorIgnore;
+ }
+
+ function fireDelayed() {
+ --delayedCallbackDepth;
+ var delayed = delayedCallbacks;
+ delayedCallbacks = null;
+ for (var i = 0; i < delayed.length; ++i) delayed[i]();
+ }
+
+ function hasHandler(emitter, type) {
+ var arr = emitter._handlers && emitter._handlers[type];
+ return arr && arr.length > 0;
+ }
+
+ CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;
+
+ function eventMixin(ctor) {
+ ctor.prototype.on = function(type, f) {on(this, type, f);};
+ ctor.prototype.off = function(type, f) {off(this, type, f);};
+ }
+
+ // MISC UTILITIES
+
+ // Number of pixels added to scroller and sizer to hide scrollbar
+ var scrollerCutOff = 30;
+
+ // Returned or thrown by various protocols to signal 'I'm not
+ // handling this'.
+ var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
+
+ function Delayed() {this.id = null;}
+ Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
+
+ // Counts the column offset in a string, taking tabs into account.
+ // Used mostly to find indentation.
+ function countColumn(string, end, tabSize, startIndex, startValue) {
+ if (end == null) {
+ end = string.search(/[^\s\u00a0]/);
+ if (end == -1) end = string.length;
+ }
+ for (var i = startIndex || 0, n = startValue || 0; i < end; ++i) {
+ if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
+ else ++n;
+ }
+ return n;
+ }
+ CodeMirror.countColumn = countColumn;
+
+ var spaceStrs = [""];
+ function spaceStr(n) {
+ while (spaceStrs.length <= n)
+ spaceStrs.push(lst(spaceStrs) + " ");
+ return spaceStrs[n];
+ }
+
+ function lst(arr) { return arr[arr.length-1]; }
+
+ function selectInput(node) {
+ if (ios) { // Mobile Safari apparently has a bug where select() is broken.
+ node.selectionStart = 0;
+ node.selectionEnd = node.value.length;
+ } else {
+ // Suppress mysterious IE10 errors
+ try { node.select(); }
+ catch(_e) {}
+ }
+ }
+
+ function indexOf(collection, elt) {
+ if (collection.indexOf) return collection.indexOf(elt);
+ for (var i = 0, e = collection.length; i < e; ++i)
+ if (collection[i] == elt) return i;
+ return -1;
+ }
+
+ function createObj(base, props) {
+ function Obj() {}
+ Obj.prototype = base;
+ var inst = new Obj();
+ if (props) copyObj(props, inst);
+ return inst;
+ }
+
+ function copyObj(obj, target) {
+ if (!target) target = {};
+ for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop];
+ return target;
+ }
+
+ function emptyArray(size) {
+ for (var a = [], i = 0; i < size; ++i) a.push(undefined);
+ return a;
+ }
+
+ function bind(f) {
+ var args = Array.prototype.slice.call(arguments, 1);
+ return function(){return f.apply(null, args);};
+ }
+
+ var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
+ function isWordChar(ch) {
+ return /\w/.test(ch) || ch > "\x80" &&
+ (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
+ }
+
+ function isEmpty(obj) {
+ for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
+ return true;
+ }
+
+ var extendingChars = /[\u0300-\u036f\u0483-\u0489\u0591-\u05bd\u05bf\u05c1\u05c2\u05c4\u05c5\u05c7\u0610-\u061a\u064b-\u065e\u0670\u06d6-\u06dc\u06de-\u06e4\u06e7\u06e8\u06ea-\u06ed\u0711\u0730-\u074a\u07a6-\u07b0\u07eb-\u07f3\u0816-\u0819\u081b-\u0823\u0825-\u0827\u0829-\u082d\u0900-\u0902\u093c\u0941-\u0948\u094d\u0951-\u0955\u0962\u0963\u0981\u09bc\u09be\u09c1-\u09c4\u09cd\u09d7\u09e2\u09e3\u0a01\u0a02\u0a3c\u0a41\u0a42\u0a47\u0a48\u0a4b-\u0a4d\u0a51\u0a70\u0a71\u0a75\u0a81\u0a82\u0abc\u0ac1-\u0ac5\u0ac7\u0ac8\u0acd\u0ae2\u0ae3\u0b01\u0b3c\u0b3e\u0b3f\u0b41-\u0b44\u0b4d\u0b56\u0b57\u0b62\u0b63\u0b82\u0bbe\u0bc0\u0bcd\u0bd7\u0c3e-\u0c40\u0c46-\u0c48\u0c4a-\u0c4d\u0c55\u0c56\u0c62\u0c63\u0cbc\u0cbf\u0cc2\u0cc6\u0ccc\u0ccd\u0cd5\u0cd6\u0ce2\u0ce3\u0d3e\u0d41-\u0d44\u0d4d\u0d57\u0d62\u0d63\u0dca\u0dcf\u0dd2-\u0dd4\u0dd6\u0ddf\u0e31\u0e34-\u0e3a\u0e47-\u0e4e\u0eb1\u0eb4-\u0eb9\u0ebb\u0ebc\u0ec8-\u0ecd\u0f18\u0f19\u0f35\u0f37\u0f39\u0f71-\u0f7e\u0f80-\u0f84\u0f86\u0f87\u0f90-\u0f97\u0f99-\u0fbc\u0fc6\u102d-\u1030\u1032-\u1037\u1039\u103a\u103d\u103e\u1058\u1059\u105e-\u1060\u1071-\u1074\u1082\u1085\u1086\u108d\u109d\u135f\u1712-\u1714\u1732-\u1734\u1752\u1753\u1772\u1773\u17b7-\u17bd\u17c6\u17c9-\u17d3\u17dd\u180b-\u180d\u18a9\u1920-\u1922\u1927\u1928\u1932\u1939-\u193b\u1a17\u1a18\u1a56\u1a58-\u1a5e\u1a60\u1a62\u1a65-\u1a6c\u1a73-\u1a7c\u1a7f\u1b00-\u1b03\u1b34\u1b36-\u1b3a\u1b3c\u1b42\u1b6b-\u1b73\u1b80\u1b81\u1ba2-\u1ba5\u1ba8\u1ba9\u1c2c-\u1c33\u1c36\u1c37\u1cd0-\u1cd2\u1cd4-\u1ce0\u1ce2-\u1ce8\u1ced\u1dc0-\u1de6\u1dfd-\u1dff\u200c\u200d\u20d0-\u20f0\u2cef-\u2cf1\u2de0-\u2dff\u302a-\u302f\u3099\u309a\ua66f-\ua672\ua67c\ua67d\ua6f0\ua6f1\ua802\ua806\ua80b\ua825\ua826\ua8c4\ua8e0-\ua8f1\ua926-\ua92d\ua947-\ua951\ua980-\ua982\ua9b3\ua9b6-\ua9b9\ua9bc\uaa29-\uaa2e\uaa31\uaa32\uaa35\uaa36\uaa43\uaa4c\uaab0\uaab2-\uaab4\uaab7\uaab8\uaabe\uaabf\uaac1\uabe5\uabe8\uabed\udc00-\udfff\ufb1e\ufe00-\ufe0f\ufe20-\ufe26\uff9e\uff9f]/;
+ function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }
+
+ // DOM UTILITIES
+
+ function elt(tag, content, className, style) {
+ var e = document.createElement(tag);
+ if (className) e.className = className;
+ if (style) e.style.cssText = style;
+ if (typeof content == "string") setTextContent(e, content);
+ else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
+ return e;
+ }
+
+ function removeChildren(e) {
+ for (var count = e.childNodes.length; count > 0; --count)
+ e.removeChild(e.firstChild);
+ return e;
+ }
+
+ function removeChildrenAndAdd(parent, e) {
+ return removeChildren(parent).appendChild(e);
+ }
+
+ function setTextContent(e, str) {
+ if (ie_lt9) {
+ e.innerHTML = "";
+ e.appendChild(document.createTextNode(str));
+ } else e.textContent = str;
+ }
+
+ function getRect(node) {
+ return node.getBoundingClientRect();
+ }
+ CodeMirror.replaceGetRect = function(f) { getRect = f; };
+
+ // FEATURE DETECTION
+
+ // Detect drag-and-drop
+ var dragAndDrop = function() {
+ // There is *some* kind of drag-and-drop support in IE6-8, but I
+ // couldn't get it to work yet.
+ if (ie_lt9) return false;
+ var div = elt('div');
+ return "draggable" in div || "dragDrop" in div;
+ }();
+
+ // For a reason I have yet to figure out, some browsers disallow
+ // word wrapping between certain characters *only* if a new inline
+ // element is started between them. This makes it hard to reliably
+ // measure the position of things, since that requires inserting an
+ // extra span. This terribly fragile set of tests matches the
+ // character combinations that suffer from this phenomenon on the
+ // various browsers.
+ function spanAffectsWrapping() { return false; }
+ if (gecko) // Only for "$'"
+ spanAffectsWrapping = function(str, i) {
+ return str.charCodeAt(i - 1) == 36 && str.charCodeAt(i) == 39;
+ };
+ else if (safari && !/Version\/([6-9]|\d\d)\b/.test(navigator.userAgent))
+ spanAffectsWrapping = function(str, i) {
+ return /\-[^ \-?]|\?[^ !\'\"\),.\-\/:;\?\]\}]/.test(str.slice(i - 1, i + 1));
+ };
+ else if (webkit && /Chrome\/(?:29|[3-9]\d|\d\d\d)\./.test(navigator.userAgent))
+ spanAffectsWrapping = function(str, i) {
+ var code = str.charCodeAt(i - 1);
+ return code >= 8208 && code <= 8212;
+ };
+ else if (webkit)
+ spanAffectsWrapping = function(str, i) {
+ if (i > 1 && str.charCodeAt(i - 1) == 45) {
+ if (/\w/.test(str.charAt(i - 2)) && /[^\-?\.]/.test(str.charAt(i))) return true;
+ if (i > 2 && /[\d\.,]/.test(str.charAt(i - 2)) && /[\d\.,]/.test(str.charAt(i))) return false;
+ }
+ return /[~!#%&*)=+}\]\\|\"\.>,:;][({[<]|-[^\-?\.\u2010-\u201f\u2026]|\?[\w~`@#$%\^&*(_=+{[|><]|\u2026[\w~`@#$%\^&*(_=+{[><]/.test(str.slice(i - 1, i + 1));
+ };
+
+ var knownScrollbarWidth;
+ function scrollbarWidth(measure) {
+ if (knownScrollbarWidth != null) return knownScrollbarWidth;
+ var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
+ removeChildrenAndAdd(measure, test);
+ if (test.offsetWidth)
+ knownScrollbarWidth = test.offsetHeight - test.clientHeight;
+ return knownScrollbarWidth || 0;
+ }
+
+ var zwspSupported;
+ function zeroWidthElement(measure) {
+ if (zwspSupported == null) {
+ var test = elt("span", "\u200b");
+ removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
+ if (measure.firstChild.offsetHeight != 0)
+ zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8;
+ }
+ if (zwspSupported) return elt("span", "\u200b");
+ else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
+ }
+
+ // See if "".split is the broken IE version, if so, provide an
+ // alternative way to split lines.
+ var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
+ var pos = 0, result = [], l = string.length;
+ while (pos <= l) {
+ var nl = string.indexOf("\n", pos);
+ if (nl == -1) nl = string.length;
+ var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
+ var rt = line.indexOf("\r");
+ if (rt != -1) {
+ result.push(line.slice(0, rt));
+ pos += rt + 1;
+ } else {
+ result.push(line);
+ pos = nl + 1;
+ }
+ }
+ return result;
+ } : function(string){return string.split(/\r\n?|\n/);};
+ CodeMirror.splitLines = splitLines;
+
+ var hasSelection = window.getSelection ? function(te) {
+ try { return te.selectionStart != te.selectionEnd; }
+ catch(e) { return false; }
+ } : function(te) {
+ try {var range = te.ownerDocument.selection.createRange();}
+ catch(e) {}
+ if (!range || range.parentElement() != te) return false;
+ return range.compareEndPoints("StartToEnd", range) != 0;
+ };
+
+ var hasCopyEvent = (function() {
+ var e = elt("div");
+ if ("oncopy" in e) return true;
+ e.setAttribute("oncopy", "return;");
+ return typeof e.oncopy == 'function';
+ })();
+
+ // KEY NAMING
+
+ var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
+ 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
+ 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
+ 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete",
+ 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
+ 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
+ 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"};
+ CodeMirror.keyNames = keyNames;
+ (function() {
+ // Number keys
+ for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
+ // Alphabetic keys
+ for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
+ // Function keys
+ for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
+ })();
+
+ // BIDI HELPERS
+
+ function iterateBidiSections(order, from, to, f) {
+ if (!order) return f(from, to, "ltr");
+ var found = false;
+ for (var i = 0; i < order.length; ++i) {
+ var part = order[i];
+ if (part.from < to && part.to > from || from == to && part.to == from) {
+ f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
+ found = true;
+ }
+ }
+ if (!found) f(from, to, "ltr");
+ }
+
+ function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
+ function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
+
+ function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
+ function lineRight(line) {
+ var order = getOrder(line);
+ if (!order) return line.text.length;
+ return bidiRight(lst(order));
+ }
+
+ function lineStart(cm, lineN) {
+ var line = getLine(cm.doc, lineN);
+ var visual = visualLine(cm.doc, line);
+ if (visual != line) lineN = lineNo(visual);
+ var order = getOrder(visual);
+ var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
+ return Pos(lineN, ch);
+ }
+ function lineEnd(cm, lineN) {
+ var merged, line;
+ while (merged = collapsedSpanAtEnd(line = getLine(cm.doc, lineN)))
+ lineN = merged.find().to.line;
+ var order = getOrder(line);
+ var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
+ return Pos(lineN, ch);
+ }
+
+ function compareBidiLevel(order, a, b) {
+ var linedir = order[0].level;
+ if (a == linedir) return true;
+ if (b == linedir) return false;
+ return a < b;
+ }
+ var bidiOther;
+ function getBidiPartAt(order, pos) {
+ bidiOther = null;
+ for (var i = 0, found; i < order.length; ++i) {
+ var cur = order[i];
+ if (cur.from < pos && cur.to > pos) return i;
+ if ((cur.from == pos || cur.to == pos)) {
+ if (found == null) {
+ found = i;
+ } else if (compareBidiLevel(order, cur.level, order[found].level)) {
+ if (cur.from != cur.to) bidiOther = found;
+ return i;
+ } else {
+ if (cur.from != cur.to) bidiOther = i;
+ return found;
+ }
+ }
+ }
+ return found;
+ }
+
+ function moveInLine(line, pos, dir, byUnit) {
+ if (!byUnit) return pos + dir;
+ do pos += dir;
+ while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
+ return pos;
+ }
+
+ // This is somewhat involved. It is needed in order to move
+ // 'visually' through bi-directional text -- i.e., pressing left
+ // should make the cursor go left, even when in RTL text. The
+ // tricky part is the 'jumps', where RTL and LTR text touch each
+ // other. This often requires the cursor offset to move more than
+ // one unit, in order to visually move one unit.
+ function moveVisually(line, start, dir, byUnit) {
+ var bidi = getOrder(line);
+ if (!bidi) return moveLogically(line, start, dir, byUnit);
+ var pos = getBidiPartAt(bidi, start), part = bidi[pos];
+ var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);
+
+ for (;;) {
+ if (target > part.from && target < part.to) return target;
+ if (target == part.from || target == part.to) {
+ if (getBidiPartAt(bidi, target) == pos) return target;
+ part = bidi[pos += dir];
+ return (dir > 0) == part.level % 2 ? part.to : part.from;
+ } else {
+ part = bidi[pos += dir];
+ if (!part) return null;
+ if ((dir > 0) == part.level % 2)
+ target = moveInLine(line, part.to, -1, byUnit);
+ else
+ target = moveInLine(line, part.from, 1, byUnit);
+ }
+ }
+ }
+
+ function moveLogically(line, start, dir, byUnit) {
+ var target = start + dir;
+ if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
+ return target < 0 || target > line.text.length ? null : target;
+ }
+
+ // Bidirectional ordering algorithm
+ // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
+ // that this (partially) implements.
+
+ // One-char codes used for character types:
+ // L (L): Left-to-Right
+ // R (R): Right-to-Left
+ // r (AL): Right-to-Left Arabic
+ // 1 (EN): European Number
+ // + (ES): European Number Separator
+ // % (ET): European Number Terminator
+ // n (AN): Arabic Number
+ // , (CS): Common Number Separator
+ // m (NSM): Non-Spacing Mark
+ // b (BN): Boundary Neutral
+ // s (B): Paragraph Separator
+ // t (S): Segment Separator
+ // w (WS): Whitespace
+ // N (ON): Other Neutrals
+
+ // Returns null if characters are ordered as they appear
+ // (left-to-right), or an array of sections ({from, to, level}
+ // objects) in the order in which they occur visually.
+ var bidiOrdering = (function() {
+ // Character types for codepoints 0 to 0xff
+ var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
+ // Character types for codepoints 0x600 to 0x6ff
+ var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
+ function charType(code) {
+ if (code <= 0xff) return lowTypes.charAt(code);
+ else if (0x590 <= code && code <= 0x5f4) return "R";
+ else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
+ else if (0x700 <= code && code <= 0x8ac) return "r";
+ else return "L";
+ }
+
+ var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
+ var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
+ // Browsers seem to always treat the boundaries of block elements as being L.
+ var outerType = "L";
+
+ return function(str) {
+ if (!bidiRE.test(str)) return false;
+ var len = str.length, types = [];
+ for (var i = 0, type; i < len; ++i)
+ types.push(type = charType(str.charCodeAt(i)));
+
+ // W1. Examine each non-spacing mark (NSM) in the level run, and
+ // change the type of the NSM to the type of the previous
+ // character. If the NSM is at the start of the level run, it will
+ // get the type of sor.
+ for (var i = 0, prev = outerType; i < len; ++i) {
+ var type = types[i];
+ if (type == "m") types[i] = prev;
+ else prev = type;
+ }
+
+ // W2. Search backwards from each instance of a European number
+ // until the first strong type (R, L, AL, or sor) is found. If an
+ // AL is found, change the type of the European number to Arabic
+ // number.
+ // W3. Change all ALs to R.
+ for (var i = 0, cur = outerType; i < len; ++i) {
+ var type = types[i];
+ if (type == "1" && cur == "r") types[i] = "n";
+ else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
+ }
+
+ // W4. A single European separator between two European numbers
+ // changes to a European number. A single common separator between
+ // two numbers of the same type changes to that type.
+ for (var i = 1, prev = types[0]; i < len - 1; ++i) {
+ var type = types[i];
+ if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
+ else if (type == "," && prev == types[i+1] &&
+ (prev == "1" || prev == "n")) types[i] = prev;
+ prev = type;
+ }
+
+ // W5. A sequence of European terminators adjacent to European
+ // numbers changes to all European numbers.
+ // W6. Otherwise, separators and terminators change to Other
+ // Neutral.
+ for (var i = 0; i < len; ++i) {
+ var type = types[i];
+ if (type == ",") types[i] = "N";
+ else if (type == "%") {
+ for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
+ var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
+ for (var j = i; j < end; ++j) types[j] = replace;
+ i = end - 1;
+ }
+ }
+
+ // W7. Search backwards from each instance of a European number
+ // until the first strong type (R, L, or sor) is found. If an L is
+ // found, then change the type of the European number to L.
+ for (var i = 0, cur = outerType; i < len; ++i) {
+ var type = types[i];
+ if (cur == "L" && type == "1") types[i] = "L";
+ else if (isStrong.test(type)) cur = type;
+ }
+
+ // N1. A sequence of neutrals takes the direction of the
+ // surrounding strong text if the text on both sides has the same
+ // direction. European and Arabic numbers act as if they were R in
+ // terms of their influence on neutrals. Start-of-level-run (sor)
+ // and end-of-level-run (eor) are used at level run boundaries.
+ // N2. Any remaining neutrals take the embedding direction.
+ for (var i = 0; i < len; ++i) {
+ if (isNeutral.test(types[i])) {
+ for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
+ var before = (i ? types[i-1] : outerType) == "L";
+ var after = (end < len ? types[end] : outerType) == "L";
+ var replace = before || after ? "L" : "R";
+ for (var j = i; j < end; ++j) types[j] = replace;
+ i = end - 1;
+ }
+ }
+
+ // Here we depart from the documented algorithm, in order to avoid
+ // building up an actual levels array. Since there are only three
+ // levels (0, 1, 2) in an implementation that doesn't take
+ // explicit embedding into account, we can build up the order on
+ // the fly, without following the level-based algorithm.
+ var order = [], m;
+ for (var i = 0; i < len;) {
+ if (countsAsLeft.test(types[i])) {
+ var start = i;
+ for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
+ order.push({from: start, to: i, level: 0});
+ } else {
+ var pos = i, at = order.length;
+ for (++i; i < len && types[i] != "L"; ++i) {}
+ for (var j = pos; j < i;) {
+ if (countsAsNum.test(types[j])) {
+ if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});
+ var nstart = j;
+ for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
+ order.splice(at, 0, {from: nstart, to: j, level: 2});
+ pos = j;
+ } else ++j;
+ }
+ if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
+ }
+ }
+ if (order[0].level == 1 && (m = str.match(/^\s+/))) {
+ order[0].from = m[0].length;
+ order.unshift({from: 0, to: m[0].length, level: 0});
+ }
+ if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
+ lst(order).to -= m[0].length;
+ order.push({from: len - m[0].length, to: len, level: 0});
+ }
+ if (order[0].level != lst(order).level)
+ order.push({from: len, to: len, level: order[0].level});
+
+ return order;
+ };
+ })();
+
+ // THE END
+
+ CodeMirror.version = "3.21.1";
+
+ return CodeMirror;
+})();
\ No newline at end of file
projects / mindcoding-template-patches.git / commitdiff