1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/browser/devtools/sourceeditor/codemirror/codemirror.js Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,7339 @@
1.4 +// This is CodeMirror (http://codemirror.net), a code editor
1.5 +// implemented in JavaScript on top of the browser's DOM.
1.6 +//
1.7 +// You can find some technical background for some of the code below
1.8 +// at http://marijnhaverbeke.nl/blog/#cm-internals .
1.9 +
1.10 +(function(mod) {
1.11 + if (typeof exports == "object" && typeof module == "object") // CommonJS
1.12 + module.exports = mod();
1.13 + else if (typeof define == "function" && define.amd) // AMD
1.14 + return define([], mod);
1.15 + else // Plain browser env
1.16 + this.CodeMirror = mod();
1.17 +})(function() {
1.18 + "use strict";
1.19 +
1.20 + // BROWSER SNIFFING
1.21 +
1.22 + // Kludges for bugs and behavior differences that can't be feature
1.23 + // detected are enabled based on userAgent etc sniffing.
1.24 +
1.25 + var gecko = /gecko\/\d/i.test(navigator.userAgent);
1.26 + // ie_uptoN means Internet Explorer version N or lower
1.27 + var ie_upto10 = /MSIE \d/.test(navigator.userAgent);
1.28 + var ie_upto7 = ie_upto10 && (document.documentMode == null || document.documentMode < 8);
1.29 + var ie_upto8 = ie_upto10 && (document.documentMode == null || document.documentMode < 9);
1.30 + var ie_upto9 = ie_upto10 && (document.documentMode == null || document.documentMode < 10);
1.31 + var ie_11up = /Trident\/([7-9]|\d{2,})\./.test(navigator.userAgent);
1.32 + var ie = ie_upto10 || ie_11up;
1.33 + var webkit = /WebKit\//.test(navigator.userAgent);
1.34 + var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
1.35 + var chrome = /Chrome\//.test(navigator.userAgent);
1.36 + var presto = /Opera\//.test(navigator.userAgent);
1.37 + var safari = /Apple Computer/.test(navigator.vendor);
1.38 + var khtml = /KHTML\//.test(navigator.userAgent);
1.39 + var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
1.40 + var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
1.41 + var phantom = /PhantomJS/.test(navigator.userAgent);
1.42 +
1.43 + var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
1.44 + // This is woefully incomplete. Suggestions for alternative methods welcome.
1.45 + var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|Opera Mobi|IEMobile/i.test(navigator.userAgent);
1.46 + var mac = ios || /Mac/.test(navigator.platform);
1.47 + var windows = /win/i.test(navigator.platform);
1.48 +
1.49 + var presto_version = presto && navigator.userAgent.match(/Version\/(\d*\.\d*)/);
1.50 + if (presto_version) presto_version = Number(presto_version[1]);
1.51 + if (presto_version && presto_version >= 15) { presto = false; webkit = true; }
1.52 + // Some browsers use the wrong event properties to signal cmd/ctrl on OS X
1.53 + var flipCtrlCmd = mac && (qtwebkit || presto && (presto_version == null || presto_version < 12.11));
1.54 + var captureRightClick = gecko || (ie && !ie_upto8);
1.55 +
1.56 + // Optimize some code when these features are not used.
1.57 + var sawReadOnlySpans = false, sawCollapsedSpans = false;
1.58 +
1.59 + // EDITOR CONSTRUCTOR
1.60 +
1.61 + // A CodeMirror instance represents an editor. This is the object
1.62 + // that user code is usually dealing with.
1.63 +
1.64 + function CodeMirror(place, options) {
1.65 + if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
1.66 +
1.67 + this.options = options = options || {};
1.68 + // Determine effective options based on given values and defaults.
1.69 + for (var opt in defaults) if (!options.hasOwnProperty(opt))
1.70 + options[opt] = defaults[opt];
1.71 + setGuttersForLineNumbers(options);
1.72 +
1.73 + var doc = options.value;
1.74 + if (typeof doc == "string") doc = new Doc(doc, options.mode);
1.75 + this.doc = doc;
1.76 +
1.77 + var display = this.display = new Display(place, doc);
1.78 + display.wrapper.CodeMirror = this;
1.79 + updateGutters(this);
1.80 + themeChanged(this);
1.81 + if (options.lineWrapping)
1.82 + this.display.wrapper.className += " CodeMirror-wrap";
1.83 + if (options.autofocus && !mobile) focusInput(this);
1.84 +
1.85 + this.state = {
1.86 + keyMaps: [], // stores maps added by addKeyMap
1.87 + overlays: [], // highlighting overlays, as added by addOverlay
1.88 + modeGen: 0, // bumped when mode/overlay changes, used to invalidate highlighting info
1.89 + overwrite: false, focused: false,
1.90 + suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
1.91 + pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
1.92 + draggingText: false,
1.93 + highlight: new Delayed() // stores highlight worker timeout
1.94 + };
1.95 +
1.96 + // Override magic textarea content restore that IE sometimes does
1.97 + // on our hidden textarea on reload
1.98 + if (ie_upto10) setTimeout(bind(resetInput, this, true), 20);
1.99 +
1.100 + registerEventHandlers(this);
1.101 +
1.102 + var cm = this;
1.103 + runInOp(this, function() {
1.104 + cm.curOp.forceUpdate = true;
1.105 + attachDoc(cm, doc);
1.106 +
1.107 + if ((options.autofocus && !mobile) || activeElt() == display.input)
1.108 + setTimeout(bind(onFocus, cm), 20);
1.109 + else
1.110 + onBlur(cm);
1.111 +
1.112 + for (var opt in optionHandlers) if (optionHandlers.hasOwnProperty(opt))
1.113 + optionHandlers[opt](cm, options[opt], Init);
1.114 + for (var i = 0; i < initHooks.length; ++i) initHooks[i](cm);
1.115 + });
1.116 + }
1.117 +
1.118 + // DISPLAY CONSTRUCTOR
1.119 +
1.120 + // The display handles the DOM integration, both for input reading
1.121 + // and content drawing. It holds references to DOM nodes and
1.122 + // display-related state.
1.123 +
1.124 + function Display(place, doc) {
1.125 + var d = this;
1.126 +
1.127 + // The semihidden textarea that is focused when the editor is
1.128 + // focused, and receives input.
1.129 + var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none");
1.130 + // The textarea is kept positioned near the cursor to prevent the
1.131 + // fact that it'll be scrolled into view on input from scrolling
1.132 + // our fake cursor out of view. On webkit, when wrap=off, paste is
1.133 + // very slow. So make the area wide instead.
1.134 + if (webkit) input.style.width = "1000px";
1.135 + else input.setAttribute("wrap", "off");
1.136 + // If border: 0; -- iOS fails to open keyboard (issue #1287)
1.137 + if (ios) input.style.border = "1px solid black";
1.138 + input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off"); input.setAttribute("spellcheck", "false");
1.139 +
1.140 + // Wraps and hides input textarea
1.141 + d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
1.142 + // The fake scrollbar elements.
1.143 + d.scrollbarH = elt("div", [elt("div", null, null, "height: 100%; min-height: 1px")], "CodeMirror-hscrollbar");
1.144 + d.scrollbarV = elt("div", [elt("div", null, null, "min-width: 1px")], "CodeMirror-vscrollbar");
1.145 + // Covers bottom-right square when both scrollbars are present.
1.146 + d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
1.147 + // Covers bottom of gutter when coverGutterNextToScrollbar is on
1.148 + // and h scrollbar is present.
1.149 + d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");
1.150 + // Will contain the actual code, positioned to cover the viewport.
1.151 + d.lineDiv = elt("div", null, "CodeMirror-code");
1.152 + // Elements are added to these to represent selection and cursors.
1.153 + d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
1.154 + d.cursorDiv = elt("div", null, "CodeMirror-cursors");
1.155 + // A visibility: hidden element used to find the size of things.
1.156 + d.measure = elt("div", null, "CodeMirror-measure");
1.157 + // When lines outside of the viewport are measured, they are drawn in this.
1.158 + d.lineMeasure = elt("div", null, "CodeMirror-measure");
1.159 + // Wraps everything that needs to exist inside the vertically-padded coordinate system
1.160 + d.lineSpace = elt("div", [d.measure, d.lineMeasure, d.selectionDiv, d.cursorDiv, d.lineDiv],
1.161 + null, "position: relative; outline: none");
1.162 + // Moved around its parent to cover visible view.
1.163 + d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
1.164 + // Set to the height of the document, allowing scrolling.
1.165 + d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
1.166 + // Behavior of elts with overflow: auto and padding is
1.167 + // inconsistent across browsers. This is used to ensure the
1.168 + // scrollable area is big enough.
1.169 + d.heightForcer = elt("div", null, null, "position: absolute; height: " + scrollerCutOff + "px; width: 1px;");
1.170 + // Will contain the gutters, if any.
1.171 + d.gutters = elt("div", null, "CodeMirror-gutters");
1.172 + d.lineGutter = null;
1.173 + // Actual scrollable element.
1.174 + d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
1.175 + d.scroller.setAttribute("tabIndex", "-1");
1.176 + // The element in which the editor lives.
1.177 + d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
1.178 + d.scrollbarFiller, d.gutterFiller, d.scroller], "CodeMirror");
1.179 +
1.180 + // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
1.181 + if (ie_upto7) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
1.182 + // Needed to hide big blue blinking cursor on Mobile Safari
1.183 + if (ios) input.style.width = "0px";
1.184 + if (!webkit) d.scroller.draggable = true;
1.185 + // Needed to handle Tab key in KHTML
1.186 + if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
1.187 + // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
1.188 + if (ie_upto7) d.scrollbarH.style.minHeight = d.scrollbarV.style.minWidth = "18px";
1.189 +
1.190 + if (place.appendChild) place.appendChild(d.wrapper);
1.191 + else place(d.wrapper);
1.192 +
1.193 + // Current rendered range (may be bigger than the view window).
1.194 + d.viewFrom = d.viewTo = doc.first;
1.195 + // Information about the rendered lines.
1.196 + d.view = [];
1.197 + // Holds info about a single rendered line when it was rendered
1.198 + // for measurement, while not in view.
1.199 + d.externalMeasured = null;
1.200 + // Empty space (in pixels) above the view
1.201 + d.viewOffset = 0;
1.202 + d.lastSizeC = 0;
1.203 + d.updateLineNumbers = null;
1.204 +
1.205 + // Used to only resize the line number gutter when necessary (when
1.206 + // the amount of lines crosses a boundary that makes its width change)
1.207 + d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
1.208 + // See readInput and resetInput
1.209 + d.prevInput = "";
1.210 + // Set to true when a non-horizontal-scrolling line widget is
1.211 + // added. As an optimization, line widget aligning is skipped when
1.212 + // this is false.
1.213 + d.alignWidgets = false;
1.214 + // Flag that indicates whether we expect input to appear real soon
1.215 + // now (after some event like 'keypress' or 'input') and are
1.216 + // polling intensively.
1.217 + d.pollingFast = false;
1.218 + // Self-resetting timeout for the poller
1.219 + d.poll = new Delayed();
1.220 +
1.221 + d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;
1.222 +
1.223 + // Tracks when resetInput has punted to just putting a short
1.224 + // string into the textarea instead of the full selection.
1.225 + d.inaccurateSelection = false;
1.226 +
1.227 + // Tracks the maximum line length so that the horizontal scrollbar
1.228 + // can be kept static when scrolling.
1.229 + d.maxLine = null;
1.230 + d.maxLineLength = 0;
1.231 + d.maxLineChanged = false;
1.232 +
1.233 + // Used for measuring wheel scrolling granularity
1.234 + d.wheelDX = d.wheelDY = d.wheelStartX = d.wheelStartY = null;
1.235 +
1.236 + // True when shift is held down.
1.237 + d.shift = false;
1.238 + }
1.239 +
1.240 + // STATE UPDATES
1.241 +
1.242 + // Used to get the editor into a consistent state again when options change.
1.243 +
1.244 + function loadMode(cm) {
1.245 + cm.doc.mode = CodeMirror.getMode(cm.options, cm.doc.modeOption);
1.246 + resetModeState(cm);
1.247 + }
1.248 +
1.249 + function resetModeState(cm) {
1.250 + cm.doc.iter(function(line) {
1.251 + if (line.stateAfter) line.stateAfter = null;
1.252 + if (line.styles) line.styles = null;
1.253 + });
1.254 + cm.doc.frontier = cm.doc.first;
1.255 + startWorker(cm, 100);
1.256 + cm.state.modeGen++;
1.257 + if (cm.curOp) regChange(cm);
1.258 + }
1.259 +
1.260 + function wrappingChanged(cm) {
1.261 + if (cm.options.lineWrapping) {
1.262 + cm.display.wrapper.className += " CodeMirror-wrap";
1.263 + cm.display.sizer.style.minWidth = "";
1.264 + } else {
1.265 + cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
1.266 + findMaxLine(cm);
1.267 + }
1.268 + estimateLineHeights(cm);
1.269 + regChange(cm);
1.270 + clearCaches(cm);
1.271 + setTimeout(function(){updateScrollbars(cm);}, 100);
1.272 + }
1.273 +
1.274 + // Returns a function that estimates the height of a line, to use as
1.275 + // first approximation until the line becomes visible (and is thus
1.276 + // properly measurable).
1.277 + function estimateHeight(cm) {
1.278 + var th = textHeight(cm.display), wrapping = cm.options.lineWrapping;
1.279 + var perLine = wrapping && Math.max(5, cm.display.scroller.clientWidth / charWidth(cm.display) - 3);
1.280 + return function(line) {
1.281 + if (lineIsHidden(cm.doc, line)) return 0;
1.282 +
1.283 + var widgetsHeight = 0;
1.284 + if (line.widgets) for (var i = 0; i < line.widgets.length; i++) {
1.285 + if (line.widgets[i].height) widgetsHeight += line.widgets[i].height;
1.286 + }
1.287 +
1.288 + if (wrapping)
1.289 + return widgetsHeight + (Math.ceil(line.text.length / perLine) || 1) * th;
1.290 + else
1.291 + return widgetsHeight + th;
1.292 + };
1.293 + }
1.294 +
1.295 + function estimateLineHeights(cm) {
1.296 + var doc = cm.doc, est = estimateHeight(cm);
1.297 + doc.iter(function(line) {
1.298 + var estHeight = est(line);
1.299 + if (estHeight != line.height) updateLineHeight(line, estHeight);
1.300 + });
1.301 + }
1.302 +
1.303 + function keyMapChanged(cm) {
1.304 + var map = keyMap[cm.options.keyMap], style = map.style;
1.305 + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
1.306 + (style ? " cm-keymap-" + style : "");
1.307 + }
1.308 +
1.309 + function themeChanged(cm) {
1.310 + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
1.311 + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
1.312 + clearCaches(cm);
1.313 + }
1.314 +
1.315 + function guttersChanged(cm) {
1.316 + updateGutters(cm);
1.317 + regChange(cm);
1.318 + setTimeout(function(){alignHorizontally(cm);}, 20);
1.319 + }
1.320 +
1.321 + // Rebuild the gutter elements, ensure the margin to the left of the
1.322 + // code matches their width.
1.323 + function updateGutters(cm) {
1.324 + var gutters = cm.display.gutters, specs = cm.options.gutters;
1.325 + removeChildren(gutters);
1.326 + for (var i = 0; i < specs.length; ++i) {
1.327 + var gutterClass = specs[i];
1.328 + var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
1.329 + if (gutterClass == "CodeMirror-linenumbers") {
1.330 + cm.display.lineGutter = gElt;
1.331 + gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
1.332 + }
1.333 + }
1.334 + gutters.style.display = i ? "" : "none";
1.335 + var width = gutters.offsetWidth;
1.336 + cm.display.sizer.style.marginLeft = width + "px";
1.337 + if (i) cm.display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0;
1.338 + }
1.339 +
1.340 + // Compute the character length of a line, taking into account
1.341 + // collapsed ranges (see markText) that might hide parts, and join
1.342 + // other lines onto it.
1.343 + function lineLength(line) {
1.344 + if (line.height == 0) return 0;
1.345 + var len = line.text.length, merged, cur = line;
1.346 + while (merged = collapsedSpanAtStart(cur)) {
1.347 + var found = merged.find(0, true);
1.348 + cur = found.from.line;
1.349 + len += found.from.ch - found.to.ch;
1.350 + }
1.351 + cur = line;
1.352 + while (merged = collapsedSpanAtEnd(cur)) {
1.353 + var found = merged.find(0, true);
1.354 + len -= cur.text.length - found.from.ch;
1.355 + cur = found.to.line;
1.356 + len += cur.text.length - found.to.ch;
1.357 + }
1.358 + return len;
1.359 + }
1.360 +
1.361 + // Find the longest line in the document.
1.362 + function findMaxLine(cm) {
1.363 + var d = cm.display, doc = cm.doc;
1.364 + d.maxLine = getLine(doc, doc.first);
1.365 + d.maxLineLength = lineLength(d.maxLine);
1.366 + d.maxLineChanged = true;
1.367 + doc.iter(function(line) {
1.368 + var len = lineLength(line);
1.369 + if (len > d.maxLineLength) {
1.370 + d.maxLineLength = len;
1.371 + d.maxLine = line;
1.372 + }
1.373 + });
1.374 + }
1.375 +
1.376 + // Make sure the gutters options contains the element
1.377 + // "CodeMirror-linenumbers" when the lineNumbers option is true.
1.378 + function setGuttersForLineNumbers(options) {
1.379 + var found = indexOf(options.gutters, "CodeMirror-linenumbers");
1.380 + if (found == -1 && options.lineNumbers) {
1.381 + options.gutters = options.gutters.concat(["CodeMirror-linenumbers"]);
1.382 + } else if (found > -1 && !options.lineNumbers) {
1.383 + options.gutters = options.gutters.slice(0);
1.384 + options.gutters.splice(found, 1);
1.385 + }
1.386 + }
1.387 +
1.388 + // SCROLLBARS
1.389 +
1.390 + // Prepare DOM reads needed to update the scrollbars. Done in one
1.391 + // shot to minimize update/measure roundtrips.
1.392 + function measureForScrollbars(cm) {
1.393 + var scroll = cm.display.scroller;
1.394 + return {
1.395 + clientHeight: scroll.clientHeight,
1.396 + barHeight: cm.display.scrollbarV.clientHeight,
1.397 + scrollWidth: scroll.scrollWidth, clientWidth: scroll.clientWidth,
1.398 + barWidth: cm.display.scrollbarH.clientWidth,
1.399 + docHeight: Math.round(cm.doc.height + paddingVert(cm.display))
1.400 + };
1.401 + }
1.402 +
1.403 + // Re-synchronize the fake scrollbars with the actual size of the
1.404 + // content.
1.405 + function updateScrollbars(cm, measure) {
1.406 + if (!measure) measure = measureForScrollbars(cm);
1.407 + var d = cm.display;
1.408 + var scrollHeight = measure.docHeight + scrollerCutOff;
1.409 + var needsH = measure.scrollWidth > measure.clientWidth;
1.410 + var needsV = scrollHeight > measure.clientHeight;
1.411 + if (needsV) {
1.412 + d.scrollbarV.style.display = "block";
1.413 + d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
1.414 + // A bug in IE8 can cause this value to be negative, so guard it.
1.415 + d.scrollbarV.firstChild.style.height =
1.416 + Math.max(0, scrollHeight - measure.clientHeight + (measure.barHeight || d.scrollbarV.clientHeight)) + "px";
1.417 + } else {
1.418 + d.scrollbarV.style.display = "";
1.419 + d.scrollbarV.firstChild.style.height = "0";
1.420 + }
1.421 + if (needsH) {
1.422 + d.scrollbarH.style.display = "block";
1.423 + d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
1.424 + d.scrollbarH.firstChild.style.width =
1.425 + (measure.scrollWidth - measure.clientWidth + (measure.barWidth || d.scrollbarH.clientWidth)) + "px";
1.426 + } else {
1.427 + d.scrollbarH.style.display = "";
1.428 + d.scrollbarH.firstChild.style.width = "0";
1.429 + }
1.430 + if (needsH && needsV) {
1.431 + d.scrollbarFiller.style.display = "block";
1.432 + d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
1.433 + } else d.scrollbarFiller.style.display = "";
1.434 + if (needsH && cm.options.coverGutterNextToScrollbar && cm.options.fixedGutter) {
1.435 + d.gutterFiller.style.display = "block";
1.436 + d.gutterFiller.style.height = scrollbarWidth(d.measure) + "px";
1.437 + d.gutterFiller.style.width = d.gutters.offsetWidth + "px";
1.438 + } else d.gutterFiller.style.display = "";
1.439 +
1.440 + if (mac_geLion && scrollbarWidth(d.measure) === 0) {
1.441 + d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
1.442 + var barMouseDown = function(e) {
1.443 + if (e_target(e) != d.scrollbarV && e_target(e) != d.scrollbarH)
1.444 + operation(cm, onMouseDown)(e);
1.445 + };
1.446 + on(d.scrollbarV, "mousedown", barMouseDown);
1.447 + on(d.scrollbarH, "mousedown", barMouseDown);
1.448 + }
1.449 + }
1.450 +
1.451 + // Compute the lines that are visible in a given viewport (defaults
1.452 + // the the current scroll position). viewPort may contain top,
1.453 + // height, and ensure (see op.scrollToPos) properties.
1.454 + function visibleLines(display, doc, viewPort) {
1.455 + var top = viewPort && viewPort.top != null ? viewPort.top : display.scroller.scrollTop;
1.456 + top = Math.floor(top - paddingTop(display));
1.457 + var bottom = viewPort && viewPort.bottom != null ? viewPort.bottom : top + display.wrapper.clientHeight;
1.458 +
1.459 + var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
1.460 + // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
1.461 + // forces those lines into the viewport (if possible).
1.462 + if (viewPort && viewPort.ensure) {
1.463 + var ensureFrom = viewPort.ensure.from.line, ensureTo = viewPort.ensure.to.line;
1.464 + if (ensureFrom < from)
1.465 + return {from: ensureFrom,
1.466 + to: lineAtHeight(doc, heightAtLine(getLine(doc, ensureFrom)) + display.wrapper.clientHeight)};
1.467 + if (Math.min(ensureTo, doc.lastLine()) >= to)
1.468 + return {from: lineAtHeight(doc, heightAtLine(getLine(doc, ensureTo)) - display.wrapper.clientHeight),
1.469 + to: ensureTo};
1.470 + }
1.471 + return {from: from, to: to};
1.472 + }
1.473 +
1.474 + // LINE NUMBERS
1.475 +
1.476 + // Re-align line numbers and gutter marks to compensate for
1.477 + // horizontal scrolling.
1.478 + function alignHorizontally(cm) {
1.479 + var display = cm.display, view = display.view;
1.480 + if (!display.alignWidgets && (!display.gutters.firstChild || !cm.options.fixedGutter)) return;
1.481 + var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.doc.scrollLeft;
1.482 + var gutterW = display.gutters.offsetWidth, left = comp + "px";
1.483 + for (var i = 0; i < view.length; i++) if (!view[i].hidden) {
1.484 + if (cm.options.fixedGutter && view[i].gutter)
1.485 + view[i].gutter.style.left = left;
1.486 + var align = view[i].alignable;
1.487 + if (align) for (var j = 0; j < align.length; j++)
1.488 + align[j].style.left = left;
1.489 + }
1.490 + if (cm.options.fixedGutter)
1.491 + display.gutters.style.left = (comp + gutterW) + "px";
1.492 + }
1.493 +
1.494 + // Used to ensure that the line number gutter is still the right
1.495 + // size for the current document size. Returns true when an update
1.496 + // is needed.
1.497 + function maybeUpdateLineNumberWidth(cm) {
1.498 + if (!cm.options.lineNumbers) return false;
1.499 + var doc = cm.doc, last = lineNumberFor(cm.options, doc.first + doc.size - 1), display = cm.display;
1.500 + if (last.length != display.lineNumChars) {
1.501 + var test = display.measure.appendChild(elt("div", [elt("div", last)],
1.502 + "CodeMirror-linenumber CodeMirror-gutter-elt"));
1.503 + var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
1.504 + display.lineGutter.style.width = "";
1.505 + display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
1.506 + display.lineNumWidth = display.lineNumInnerWidth + padding;
1.507 + display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
1.508 + display.lineGutter.style.width = display.lineNumWidth + "px";
1.509 + var width = display.gutters.offsetWidth;
1.510 + display.scrollbarH.style.left = cm.options.fixedGutter ? width + "px" : 0;
1.511 + display.sizer.style.marginLeft = width + "px";
1.512 + return true;
1.513 + }
1.514 + return false;
1.515 + }
1.516 +
1.517 + function lineNumberFor(options, i) {
1.518 + return String(options.lineNumberFormatter(i + options.firstLineNumber));
1.519 + }
1.520 +
1.521 + // Computes display.scroller.scrollLeft + display.gutters.offsetWidth,
1.522 + // but using getBoundingClientRect to get a sub-pixel-accurate
1.523 + // result.
1.524 + function compensateForHScroll(display) {
1.525 + return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
1.526 + }
1.527 +
1.528 + // DISPLAY DRAWING
1.529 +
1.530 + // Updates the display, selection, and scrollbars, using the
1.531 + // information in display.view to find out which nodes are no longer
1.532 + // up-to-date. Tries to bail out early when no changes are needed,
1.533 + // unless forced is true.
1.534 + // Returns true if an actual update happened, false otherwise.
1.535 + function updateDisplay(cm, viewPort, forced) {
1.536 + var oldFrom = cm.display.viewFrom, oldTo = cm.display.viewTo, updated;
1.537 + var visible = visibleLines(cm.display, cm.doc, viewPort);
1.538 + for (var first = true;; first = false) {
1.539 + var oldWidth = cm.display.scroller.clientWidth;
1.540 + if (!updateDisplayInner(cm, visible, forced)) break;
1.541 + updated = true;
1.542 +
1.543 + // If the max line changed since it was last measured, measure it,
1.544 + // and ensure the document's width matches it.
1.545 + if (cm.display.maxLineChanged && !cm.options.lineWrapping)
1.546 + adjustContentWidth(cm);
1.547 +
1.548 + var barMeasure = measureForScrollbars(cm);
1.549 + updateSelection(cm);
1.550 + setDocumentHeight(cm, barMeasure);
1.551 + updateScrollbars(cm, barMeasure);
1.552 + if (first && cm.options.lineWrapping && oldWidth != cm.display.scroller.clientWidth) {
1.553 + forced = true;
1.554 + continue;
1.555 + }
1.556 + forced = false;
1.557 +
1.558 + // Clip forced viewport to actual scrollable area.
1.559 + if (viewPort && viewPort.top != null)
1.560 + viewPort = {top: Math.min(barMeasure.docHeight - scrollerCutOff - barMeasure.clientHeight, viewPort.top)};
1.561 + // Updated line heights might result in the drawn area not
1.562 + // actually covering the viewport. Keep looping until it does.
1.563 + visible = visibleLines(cm.display, cm.doc, viewPort);
1.564 + if (visible.from >= cm.display.viewFrom && visible.to <= cm.display.viewTo)
1.565 + break;
1.566 + }
1.567 +
1.568 + cm.display.updateLineNumbers = null;
1.569 + if (updated) {
1.570 + signalLater(cm, "update", cm);
1.571 + if (cm.display.viewFrom != oldFrom || cm.display.viewTo != oldTo)
1.572 + signalLater(cm, "viewportChange", cm, cm.display.viewFrom, cm.display.viewTo);
1.573 + }
1.574 + return updated;
1.575 + }
1.576 +
1.577 + // Does the actual updating of the line display. Bails out
1.578 + // (returning false) when there is nothing to be done and forced is
1.579 + // false.
1.580 + function updateDisplayInner(cm, visible, forced) {
1.581 + var display = cm.display, doc = cm.doc;
1.582 + if (!display.wrapper.offsetWidth) {
1.583 + resetView(cm);
1.584 + return;
1.585 + }
1.586 +
1.587 + // Bail out if the visible area is already rendered and nothing changed.
1.588 + if (!forced && visible.from >= display.viewFrom && visible.to <= display.viewTo &&
1.589 + countDirtyView(cm) == 0)
1.590 + return;
1.591 +
1.592 + if (maybeUpdateLineNumberWidth(cm))
1.593 + resetView(cm);
1.594 + var dims = getDimensions(cm);
1.595 +
1.596 + // Compute a suitable new viewport (from & to)
1.597 + var end = doc.first + doc.size;
1.598 + var from = Math.max(visible.from - cm.options.viewportMargin, doc.first);
1.599 + var to = Math.min(end, visible.to + cm.options.viewportMargin);
1.600 + if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
1.601 + if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
1.602 + if (sawCollapsedSpans) {
1.603 + from = visualLineNo(cm.doc, from);
1.604 + to = visualLineEndNo(cm.doc, to);
1.605 + }
1.606 +
1.607 + var different = from != display.viewFrom || to != display.viewTo ||
1.608 + display.lastSizeC != display.wrapper.clientHeight;
1.609 + adjustView(cm, from, to);
1.610 +
1.611 + display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
1.612 + // Position the mover div to align with the current scroll position
1.613 + cm.display.mover.style.top = display.viewOffset + "px";
1.614 +
1.615 + var toUpdate = countDirtyView(cm);
1.616 + if (!different && toUpdate == 0 && !forced) return;
1.617 +
1.618 + // For big changes, we hide the enclosing element during the
1.619 + // update, since that speeds up the operations on most browsers.
1.620 + var focused = activeElt();
1.621 + if (toUpdate > 4) display.lineDiv.style.display = "none";
1.622 + patchDisplay(cm, display.updateLineNumbers, dims);
1.623 + if (toUpdate > 4) display.lineDiv.style.display = "";
1.624 + // There might have been a widget with a focused element that got
1.625 + // hidden or updated, if so re-focus it.
1.626 + if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();
1.627 +
1.628 + // Prevent selection and cursors from interfering with the scroll
1.629 + // width.
1.630 + removeChildren(display.cursorDiv);
1.631 + removeChildren(display.selectionDiv);
1.632 +
1.633 + if (different) {
1.634 + display.lastSizeC = display.wrapper.clientHeight;
1.635 + startWorker(cm, 400);
1.636 + }
1.637 +
1.638 + updateHeightsInViewport(cm);
1.639 +
1.640 + return true;
1.641 + }
1.642 +
1.643 + function adjustContentWidth(cm) {
1.644 + var display = cm.display;
1.645 + var width = measureChar(cm, display.maxLine, display.maxLine.text.length).left;
1.646 + display.maxLineChanged = false;
1.647 + var minWidth = Math.max(0, width + 3);
1.648 + var maxScrollLeft = Math.max(0, display.sizer.offsetLeft + minWidth + scrollerCutOff - display.scroller.clientWidth);
1.649 + display.sizer.style.minWidth = minWidth + "px";
1.650 + if (maxScrollLeft < cm.doc.scrollLeft)
1.651 + setScrollLeft(cm, Math.min(display.scroller.scrollLeft, maxScrollLeft), true);
1.652 + }
1.653 +
1.654 + function setDocumentHeight(cm, measure) {
1.655 + cm.display.sizer.style.minHeight = cm.display.heightForcer.style.top = measure.docHeight + "px";
1.656 + cm.display.gutters.style.height = Math.max(measure.docHeight, measure.clientHeight - scrollerCutOff) + "px";
1.657 + }
1.658 +
1.659 + // Read the actual heights of the rendered lines, and update their
1.660 + // stored heights to match.
1.661 + function updateHeightsInViewport(cm) {
1.662 + var display = cm.display;
1.663 + var prevBottom = display.lineDiv.offsetTop;
1.664 + for (var i = 0; i < display.view.length; i++) {
1.665 + var cur = display.view[i], height;
1.666 + if (cur.hidden) continue;
1.667 + if (ie_upto7) {
1.668 + var bot = cur.node.offsetTop + cur.node.offsetHeight;
1.669 + height = bot - prevBottom;
1.670 + prevBottom = bot;
1.671 + } else {
1.672 + var box = cur.node.getBoundingClientRect();
1.673 + height = box.bottom - box.top;
1.674 + }
1.675 + var diff = cur.line.height - height;
1.676 + if (height < 2) height = textHeight(display);
1.677 + if (diff > .001 || diff < -.001) {
1.678 + updateLineHeight(cur.line, height);
1.679 + updateWidgetHeight(cur.line);
1.680 + if (cur.rest) for (var j = 0; j < cur.rest.length; j++)
1.681 + updateWidgetHeight(cur.rest[j]);
1.682 + }
1.683 + }
1.684 + }
1.685 +
1.686 + // Read and store the height of line widgets associated with the
1.687 + // given line.
1.688 + function updateWidgetHeight(line) {
1.689 + if (line.widgets) for (var i = 0; i < line.widgets.length; ++i)
1.690 + line.widgets[i].height = line.widgets[i].node.offsetHeight;
1.691 + }
1.692 +
1.693 + // Do a bulk-read of the DOM positions and sizes needed to draw the
1.694 + // view, so that we don't interleave reading and writing to the DOM.
1.695 + function getDimensions(cm) {
1.696 + var d = cm.display, left = {}, width = {};
1.697 + for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
1.698 + left[cm.options.gutters[i]] = n.offsetLeft;
1.699 + width[cm.options.gutters[i]] = n.offsetWidth;
1.700 + }
1.701 + return {fixedPos: compensateForHScroll(d),
1.702 + gutterTotalWidth: d.gutters.offsetWidth,
1.703 + gutterLeft: left,
1.704 + gutterWidth: width,
1.705 + wrapperWidth: d.wrapper.clientWidth};
1.706 + }
1.707 +
1.708 + // Sync the actual display DOM structure with display.view, removing
1.709 + // nodes for lines that are no longer in view, and creating the ones
1.710 + // that are not there yet, and updating the ones that are out of
1.711 + // date.
1.712 + function patchDisplay(cm, updateNumbersFrom, dims) {
1.713 + var display = cm.display, lineNumbers = cm.options.lineNumbers;
1.714 + var container = display.lineDiv, cur = container.firstChild;
1.715 +
1.716 + function rm(node) {
1.717 + var next = node.nextSibling;
1.718 + // Works around a throw-scroll bug in OS X Webkit
1.719 + if (webkit && mac && cm.display.currentWheelTarget == node)
1.720 + node.style.display = "none";
1.721 + else
1.722 + node.parentNode.removeChild(node);
1.723 + return next;
1.724 + }
1.725 +
1.726 + var view = display.view, lineN = display.viewFrom;
1.727 + // Loop over the elements in the view, syncing cur (the DOM nodes
1.728 + // in display.lineDiv) with the view as we go.
1.729 + for (var i = 0; i < view.length; i++) {
1.730 + var lineView = view[i];
1.731 + if (lineView.hidden) {
1.732 + } else if (!lineView.node) { // Not drawn yet
1.733 + var node = buildLineElement(cm, lineView, lineN, dims);
1.734 + container.insertBefore(node, cur);
1.735 + } else { // Already drawn
1.736 + while (cur != lineView.node) cur = rm(cur);
1.737 + var updateNumber = lineNumbers && updateNumbersFrom != null &&
1.738 + updateNumbersFrom <= lineN && lineView.lineNumber;
1.739 + if (lineView.changes) {
1.740 + if (indexOf(lineView.changes, "gutter") > -1) updateNumber = false;
1.741 + updateLineForChanges(cm, lineView, lineN, dims);
1.742 + }
1.743 + if (updateNumber) {
1.744 + removeChildren(lineView.lineNumber);
1.745 + lineView.lineNumber.appendChild(document.createTextNode(lineNumberFor(cm.options, lineN)));
1.746 + }
1.747 + cur = lineView.node.nextSibling;
1.748 + }
1.749 + lineN += lineView.size;
1.750 + }
1.751 + while (cur) cur = rm(cur);
1.752 + }
1.753 +
1.754 + // When an aspect of a line changes, a string is added to
1.755 + // lineView.changes. This updates the relevant part of the line's
1.756 + // DOM structure.
1.757 + function updateLineForChanges(cm, lineView, lineN, dims) {
1.758 + for (var j = 0; j < lineView.changes.length; j++) {
1.759 + var type = lineView.changes[j];
1.760 + if (type == "text") updateLineText(cm, lineView);
1.761 + else if (type == "gutter") updateLineGutter(cm, lineView, lineN, dims);
1.762 + else if (type == "class") updateLineClasses(lineView);
1.763 + else if (type == "widget") updateLineWidgets(lineView, dims);
1.764 + }
1.765 + lineView.changes = null;
1.766 + }
1.767 +
1.768 + // Lines with gutter elements, widgets or a background class need to
1.769 + // be wrapped, and have the extra elements added to the wrapper div
1.770 + function ensureLineWrapped(lineView) {
1.771 + if (lineView.node == lineView.text) {
1.772 + lineView.node = elt("div", null, null, "position: relative");
1.773 + if (lineView.text.parentNode)
1.774 + lineView.text.parentNode.replaceChild(lineView.node, lineView.text);
1.775 + lineView.node.appendChild(lineView.text);
1.776 + if (ie_upto7) lineView.node.style.zIndex = 2;
1.777 + }
1.778 + return lineView.node;
1.779 + }
1.780 +
1.781 + function updateLineBackground(lineView) {
1.782 + var cls = lineView.bgClass ? lineView.bgClass + " " + (lineView.line.bgClass || "") : lineView.line.bgClass;
1.783 + if (cls) cls += " CodeMirror-linebackground";
1.784 + if (lineView.background) {
1.785 + if (cls) lineView.background.className = cls;
1.786 + else { lineView.background.parentNode.removeChild(lineView.background); lineView.background = null; }
1.787 + } else if (cls) {
1.788 + var wrap = ensureLineWrapped(lineView);
1.789 + lineView.background = wrap.insertBefore(elt("div", null, cls), wrap.firstChild);
1.790 + }
1.791 + }
1.792 +
1.793 + // Wrapper around buildLineContent which will reuse the structure
1.794 + // in display.externalMeasured when possible.
1.795 + function getLineContent(cm, lineView) {
1.796 + var ext = cm.display.externalMeasured;
1.797 + if (ext && ext.line == lineView.line) {
1.798 + cm.display.externalMeasured = null;
1.799 + lineView.measure = ext.measure;
1.800 + return ext.built;
1.801 + }
1.802 + return buildLineContent(cm, lineView);
1.803 + }
1.804 +
1.805 + // Redraw the line's text. Interacts with the background and text
1.806 + // classes because the mode may output tokens that influence these
1.807 + // classes.
1.808 + function updateLineText(cm, lineView) {
1.809 + var cls = lineView.text.className;
1.810 + var built = getLineContent(cm, lineView);
1.811 + if (lineView.text == lineView.node) lineView.node = built.pre;
1.812 + lineView.text.parentNode.replaceChild(built.pre, lineView.text);
1.813 + lineView.text = built.pre;
1.814 + if (built.bgClass != lineView.bgClass || built.textClass != lineView.textClass) {
1.815 + lineView.bgClass = built.bgClass;
1.816 + lineView.textClass = built.textClass;
1.817 + updateLineClasses(lineView);
1.818 + } else if (cls) {
1.819 + lineView.text.className = cls;
1.820 + }
1.821 + }
1.822 +
1.823 + function updateLineClasses(lineView) {
1.824 + updateLineBackground(lineView);
1.825 + if (lineView.line.wrapClass)
1.826 + ensureLineWrapped(lineView).className = lineView.line.wrapClass;
1.827 + else if (lineView.node != lineView.text)
1.828 + lineView.node.className = "";
1.829 + var textClass = lineView.textClass ? lineView.textClass + " " + (lineView.line.textClass || "") : lineView.line.textClass;
1.830 + lineView.text.className = textClass || "";
1.831 + }
1.832 +
1.833 + function updateLineGutter(cm, lineView, lineN, dims) {
1.834 + if (lineView.gutter) {
1.835 + lineView.node.removeChild(lineView.gutter);
1.836 + lineView.gutter = null;
1.837 + }
1.838 + var markers = lineView.line.gutterMarkers;
1.839 + if (cm.options.lineNumbers || markers) {
1.840 + var wrap = ensureLineWrapped(lineView);
1.841 + var gutterWrap = lineView.gutter =
1.842 + wrap.insertBefore(elt("div", null, "CodeMirror-gutter-wrapper", "position: absolute; left: " +
1.843 + (cm.options.fixedGutter ? dims.fixedPos : -dims.gutterTotalWidth) + "px"),
1.844 + lineView.text);
1.845 + if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
1.846 + lineView.lineNumber = gutterWrap.appendChild(
1.847 + elt("div", lineNumberFor(cm.options, lineN),
1.848 + "CodeMirror-linenumber CodeMirror-gutter-elt",
1.849 + "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
1.850 + + cm.display.lineNumInnerWidth + "px"));
1.851 + if (markers) for (var k = 0; k < cm.options.gutters.length; ++k) {
1.852 + var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
1.853 + if (found)
1.854 + gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
1.855 + dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
1.856 + }
1.857 + }
1.858 + }
1.859 +
1.860 + function updateLineWidgets(lineView, dims) {
1.861 + if (lineView.alignable) lineView.alignable = null;
1.862 + for (var node = lineView.node.firstChild, next; node; node = next) {
1.863 + var next = node.nextSibling;
1.864 + if (node.className == "CodeMirror-linewidget")
1.865 + lineView.node.removeChild(node);
1.866 + }
1.867 + insertLineWidgets(lineView, dims);
1.868 + }
1.869 +
1.870 + // Build a line's DOM representation from scratch
1.871 + function buildLineElement(cm, lineView, lineN, dims) {
1.872 + var built = getLineContent(cm, lineView);
1.873 + lineView.text = lineView.node = built.pre;
1.874 + if (built.bgClass) lineView.bgClass = built.bgClass;
1.875 + if (built.textClass) lineView.textClass = built.textClass;
1.876 +
1.877 + updateLineClasses(lineView);
1.878 + updateLineGutter(cm, lineView, lineN, dims);
1.879 + insertLineWidgets(lineView, dims);
1.880 + return lineView.node;
1.881 + }
1.882 +
1.883 + // A lineView may contain multiple logical lines (when merged by
1.884 + // collapsed spans). The widgets for all of them need to be drawn.
1.885 + function insertLineWidgets(lineView, dims) {
1.886 + insertLineWidgetsFor(lineView.line, lineView, dims, true);
1.887 + if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
1.888 + insertLineWidgetsFor(lineView.rest[i], lineView, dims, false);
1.889 + }
1.890 +
1.891 + function insertLineWidgetsFor(line, lineView, dims, allowAbove) {
1.892 + if (!line.widgets) return;
1.893 + var wrap = ensureLineWrapped(lineView);
1.894 + for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
1.895 + var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
1.896 + if (!widget.handleMouseEvents) node.ignoreEvents = true;
1.897 + positionLineWidget(widget, node, lineView, dims);
1.898 + if (allowAbove && widget.above)
1.899 + wrap.insertBefore(node, lineView.gutter || lineView.text);
1.900 + else
1.901 + wrap.appendChild(node);
1.902 + signalLater(widget, "redraw");
1.903 + }
1.904 + }
1.905 +
1.906 + function positionLineWidget(widget, node, lineView, dims) {
1.907 + if (widget.noHScroll) {
1.908 + (lineView.alignable || (lineView.alignable = [])).push(node);
1.909 + var width = dims.wrapperWidth;
1.910 + node.style.left = dims.fixedPos + "px";
1.911 + if (!widget.coverGutter) {
1.912 + width -= dims.gutterTotalWidth;
1.913 + node.style.paddingLeft = dims.gutterTotalWidth + "px";
1.914 + }
1.915 + node.style.width = width + "px";
1.916 + }
1.917 + if (widget.coverGutter) {
1.918 + node.style.zIndex = 5;
1.919 + node.style.position = "relative";
1.920 + if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
1.921 + }
1.922 + }
1.923 +
1.924 + // POSITION OBJECT
1.925 +
1.926 + // A Pos instance represents a position within the text.
1.927 + var Pos = CodeMirror.Pos = function(line, ch) {
1.928 + if (!(this instanceof Pos)) return new Pos(line, ch);
1.929 + this.line = line; this.ch = ch;
1.930 + };
1.931 +
1.932 + // Compare two positions, return 0 if they are the same, a negative
1.933 + // number when a is less, and a positive number otherwise.
1.934 + var cmp = CodeMirror.cmpPos = function(a, b) { return a.line - b.line || a.ch - b.ch; };
1.935 +
1.936 + function copyPos(x) {return Pos(x.line, x.ch);}
1.937 + function maxPos(a, b) { return cmp(a, b) < 0 ? b : a; }
1.938 + function minPos(a, b) { return cmp(a, b) < 0 ? a : b; }
1.939 +
1.940 + // SELECTION / CURSOR
1.941 +
1.942 + // Selection objects are immutable. A new one is created every time
1.943 + // the selection changes. A selection is one or more non-overlapping
1.944 + // (and non-touching) ranges, sorted, and an integer that indicates
1.945 + // which one is the primary selection (the one that's scrolled into
1.946 + // view, that getCursor returns, etc).
1.947 + function Selection(ranges, primIndex) {
1.948 + this.ranges = ranges;
1.949 + this.primIndex = primIndex;
1.950 + }
1.951 +
1.952 + Selection.prototype = {
1.953 + primary: function() { return this.ranges[this.primIndex]; },
1.954 + equals: function(other) {
1.955 + if (other == this) return true;
1.956 + if (other.primIndex != this.primIndex || other.ranges.length != this.ranges.length) return false;
1.957 + for (var i = 0; i < this.ranges.length; i++) {
1.958 + var here = this.ranges[i], there = other.ranges[i];
1.959 + if (cmp(here.anchor, there.anchor) != 0 || cmp(here.head, there.head) != 0) return false;
1.960 + }
1.961 + return true;
1.962 + },
1.963 + deepCopy: function() {
1.964 + for (var out = [], i = 0; i < this.ranges.length; i++)
1.965 + out[i] = new Range(copyPos(this.ranges[i].anchor), copyPos(this.ranges[i].head));
1.966 + return new Selection(out, this.primIndex);
1.967 + },
1.968 + somethingSelected: function() {
1.969 + for (var i = 0; i < this.ranges.length; i++)
1.970 + if (!this.ranges[i].empty()) return true;
1.971 + return false;
1.972 + },
1.973 + contains: function(pos, end) {
1.974 + if (!end) end = pos;
1.975 + for (var i = 0; i < this.ranges.length; i++) {
1.976 + var range = this.ranges[i];
1.977 + if (cmp(end, range.from()) >= 0 && cmp(pos, range.to()) <= 0)
1.978 + return i;
1.979 + }
1.980 + return -1;
1.981 + }
1.982 + };
1.983 +
1.984 + function Range(anchor, head) {
1.985 + this.anchor = anchor; this.head = head;
1.986 + }
1.987 +
1.988 + Range.prototype = {
1.989 + from: function() { return minPos(this.anchor, this.head); },
1.990 + to: function() { return maxPos(this.anchor, this.head); },
1.991 + empty: function() {
1.992 + return this.head.line == this.anchor.line && this.head.ch == this.anchor.ch;
1.993 + }
1.994 + };
1.995 +
1.996 + // Take an unsorted, potentially overlapping set of ranges, and
1.997 + // build a selection out of it. 'Consumes' ranges array (modifying
1.998 + // it).
1.999 + function normalizeSelection(ranges, primIndex) {
1.1000 + var prim = ranges[primIndex];
1.1001 + ranges.sort(function(a, b) { return cmp(a.from(), b.from()); });
1.1002 + primIndex = indexOf(ranges, prim);
1.1003 + for (var i = 1; i < ranges.length; i++) {
1.1004 + var cur = ranges[i], prev = ranges[i - 1];
1.1005 + if (cmp(prev.to(), cur.from()) >= 0) {
1.1006 + var from = minPos(prev.from(), cur.from()), to = maxPos(prev.to(), cur.to());
1.1007 + var inv = prev.empty() ? cur.from() == cur.head : prev.from() == prev.head;
1.1008 + if (i <= primIndex) --primIndex;
1.1009 + ranges.splice(--i, 2, new Range(inv ? to : from, inv ? from : to));
1.1010 + }
1.1011 + }
1.1012 + return new Selection(ranges, primIndex);
1.1013 + }
1.1014 +
1.1015 + function simpleSelection(anchor, head) {
1.1016 + return new Selection([new Range(anchor, head || anchor)], 0);
1.1017 + }
1.1018 +
1.1019 + // Most of the external API clips given positions to make sure they
1.1020 + // actually exist within the document.
1.1021 + function clipLine(doc, n) {return Math.max(doc.first, Math.min(n, doc.first + doc.size - 1));}
1.1022 + function clipPos(doc, pos) {
1.1023 + if (pos.line < doc.first) return Pos(doc.first, 0);
1.1024 + var last = doc.first + doc.size - 1;
1.1025 + if (pos.line > last) return Pos(last, getLine(doc, last).text.length);
1.1026 + return clipToLen(pos, getLine(doc, pos.line).text.length);
1.1027 + }
1.1028 + function clipToLen(pos, linelen) {
1.1029 + var ch = pos.ch;
1.1030 + if (ch == null || ch > linelen) return Pos(pos.line, linelen);
1.1031 + else if (ch < 0) return Pos(pos.line, 0);
1.1032 + else return pos;
1.1033 + }
1.1034 + function isLine(doc, l) {return l >= doc.first && l < doc.first + doc.size;}
1.1035 + function clipPosArray(doc, array) {
1.1036 + for (var out = [], i = 0; i < array.length; i++) out[i] = clipPos(doc, array[i]);
1.1037 + return out;
1.1038 + }
1.1039 +
1.1040 + // SELECTION UPDATES
1.1041 +
1.1042 + // The 'scroll' parameter given to many of these indicated whether
1.1043 + // the new cursor position should be scrolled into view after
1.1044 + // modifying the selection.
1.1045 +
1.1046 + // If shift is held or the extend flag is set, extends a range to
1.1047 + // include a given position (and optionally a second position).
1.1048 + // Otherwise, simply returns the range between the given positions.
1.1049 + // Used for cursor motion and such.
1.1050 + function extendRange(doc, range, head, other) {
1.1051 + if (doc.cm && doc.cm.display.shift || doc.extend) {
1.1052 + var anchor = range.anchor;
1.1053 + if (other) {
1.1054 + var posBefore = cmp(head, anchor) < 0;
1.1055 + if (posBefore != (cmp(other, anchor) < 0)) {
1.1056 + anchor = head;
1.1057 + head = other;
1.1058 + } else if (posBefore != (cmp(head, other) < 0)) {
1.1059 + head = other;
1.1060 + }
1.1061 + }
1.1062 + return new Range(anchor, head);
1.1063 + } else {
1.1064 + return new Range(other || head, head);
1.1065 + }
1.1066 + }
1.1067 +
1.1068 + // Extend the primary selection range, discard the rest.
1.1069 + function extendSelection(doc, head, other, options) {
1.1070 + setSelection(doc, new Selection([extendRange(doc, doc.sel.primary(), head, other)], 0), options);
1.1071 + }
1.1072 +
1.1073 + // Extend all selections (pos is an array of selections with length
1.1074 + // equal the number of selections)
1.1075 + function extendSelections(doc, heads, options) {
1.1076 + for (var out = [], i = 0; i < doc.sel.ranges.length; i++)
1.1077 + out[i] = extendRange(doc, doc.sel.ranges[i], heads[i], null);
1.1078 + var newSel = normalizeSelection(out, doc.sel.primIndex);
1.1079 + setSelection(doc, newSel, options);
1.1080 + }
1.1081 +
1.1082 + // Updates a single range in the selection.
1.1083 + function replaceOneSelection(doc, i, range, options) {
1.1084 + var ranges = doc.sel.ranges.slice(0);
1.1085 + ranges[i] = range;
1.1086 + setSelection(doc, normalizeSelection(ranges, doc.sel.primIndex), options);
1.1087 + }
1.1088 +
1.1089 + // Reset the selection to a single range.
1.1090 + function setSimpleSelection(doc, anchor, head, options) {
1.1091 + setSelection(doc, simpleSelection(anchor, head), options);
1.1092 + }
1.1093 +
1.1094 + // Give beforeSelectionChange handlers a change to influence a
1.1095 + // selection update.
1.1096 + function filterSelectionChange(doc, sel) {
1.1097 + var obj = {
1.1098 + ranges: sel.ranges,
1.1099 + update: function(ranges) {
1.1100 + this.ranges = [];
1.1101 + for (var i = 0; i < ranges.length; i++)
1.1102 + this.ranges[i] = new Range(clipPos(doc, ranges[i].anchor),
1.1103 + clipPos(doc, ranges[i].head));
1.1104 + }
1.1105 + };
1.1106 + signal(doc, "beforeSelectionChange", doc, obj);
1.1107 + if (doc.cm) signal(doc.cm, "beforeSelectionChange", doc.cm, obj);
1.1108 + if (obj.ranges != sel.ranges) return normalizeSelection(obj.ranges, obj.ranges.length - 1);
1.1109 + else return sel;
1.1110 + }
1.1111 +
1.1112 + function setSelectionReplaceHistory(doc, sel, options) {
1.1113 + var done = doc.history.done, last = lst(done);
1.1114 + if (last && last.ranges) {
1.1115 + done[done.length - 1] = sel;
1.1116 + setSelectionNoUndo(doc, sel, options);
1.1117 + } else {
1.1118 + setSelection(doc, sel, options);
1.1119 + }
1.1120 + }
1.1121 +
1.1122 + // Set a new selection.
1.1123 + function setSelection(doc, sel, options) {
1.1124 + setSelectionNoUndo(doc, sel, options);
1.1125 + addSelectionToHistory(doc, doc.sel, doc.cm ? doc.cm.curOp.id : NaN, options);
1.1126 + }
1.1127 +
1.1128 + function setSelectionNoUndo(doc, sel, options) {
1.1129 + if (hasHandler(doc, "beforeSelectionChange") || doc.cm && hasHandler(doc.cm, "beforeSelectionChange"))
1.1130 + sel = filterSelectionChange(doc, sel);
1.1131 +
1.1132 + var bias = cmp(sel.primary().head, doc.sel.primary().head) < 0 ? -1 : 1;
1.1133 + setSelectionInner(doc, skipAtomicInSelection(doc, sel, bias, true));
1.1134 +
1.1135 + if (!(options && options.scroll === false) && doc.cm)
1.1136 + ensureCursorVisible(doc.cm);
1.1137 + }
1.1138 +
1.1139 + function setSelectionInner(doc, sel) {
1.1140 + if (sel.equals(doc.sel)) return;
1.1141 +
1.1142 + doc.sel = sel;
1.1143 +
1.1144 + if (doc.cm)
1.1145 + doc.cm.curOp.updateInput = doc.cm.curOp.selectionChanged =
1.1146 + doc.cm.curOp.cursorActivity = true;
1.1147 + signalLater(doc, "cursorActivity", doc);
1.1148 + }
1.1149 +
1.1150 + // Verify that the selection does not partially select any atomic
1.1151 + // marked ranges.
1.1152 + function reCheckSelection(doc) {
1.1153 + setSelectionInner(doc, skipAtomicInSelection(doc, doc.sel, null, false), sel_dontScroll);
1.1154 + }
1.1155 +
1.1156 + // Return a selection that does not partially select any atomic
1.1157 + // ranges.
1.1158 + function skipAtomicInSelection(doc, sel, bias, mayClear) {
1.1159 + var out;
1.1160 + for (var i = 0; i < sel.ranges.length; i++) {
1.1161 + var range = sel.ranges[i];
1.1162 + var newAnchor = skipAtomic(doc, range.anchor, bias, mayClear);
1.1163 + var newHead = skipAtomic(doc, range.head, bias, mayClear);
1.1164 + if (out || newAnchor != range.anchor || newHead != range.head) {
1.1165 + if (!out) out = sel.ranges.slice(0, i);
1.1166 + out[i] = new Range(newAnchor, newHead);
1.1167 + }
1.1168 + }
1.1169 + return out ? normalizeSelection(out, sel.primIndex) : sel;
1.1170 + }
1.1171 +
1.1172 + // Ensure a given position is not inside an atomic range.
1.1173 + function skipAtomic(doc, pos, bias, mayClear) {
1.1174 + var flipped = false, curPos = pos;
1.1175 + var dir = bias || 1;
1.1176 + doc.cantEdit = false;
1.1177 + search: for (;;) {
1.1178 + var line = getLine(doc, curPos.line);
1.1179 + if (line.markedSpans) {
1.1180 + for (var i = 0; i < line.markedSpans.length; ++i) {
1.1181 + var sp = line.markedSpans[i], m = sp.marker;
1.1182 + if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
1.1183 + (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
1.1184 + if (mayClear) {
1.1185 + signal(m, "beforeCursorEnter");
1.1186 + if (m.explicitlyCleared) {
1.1187 + if (!line.markedSpans) break;
1.1188 + else {--i; continue;}
1.1189 + }
1.1190 + }
1.1191 + if (!m.atomic) continue;
1.1192 + var newPos = m.find(dir < 0 ? -1 : 1);
1.1193 + if (cmp(newPos, curPos) == 0) {
1.1194 + newPos.ch += dir;
1.1195 + if (newPos.ch < 0) {
1.1196 + if (newPos.line > doc.first) newPos = clipPos(doc, Pos(newPos.line - 1));
1.1197 + else newPos = null;
1.1198 + } else if (newPos.ch > line.text.length) {
1.1199 + if (newPos.line < doc.first + doc.size - 1) newPos = Pos(newPos.line + 1, 0);
1.1200 + else newPos = null;
1.1201 + }
1.1202 + if (!newPos) {
1.1203 + if (flipped) {
1.1204 + // Driven in a corner -- no valid cursor position found at all
1.1205 + // -- try again *with* clearing, if we didn't already
1.1206 + if (!mayClear) return skipAtomic(doc, pos, bias, true);
1.1207 + // Otherwise, turn off editing until further notice, and return the start of the doc
1.1208 + doc.cantEdit = true;
1.1209 + return Pos(doc.first, 0);
1.1210 + }
1.1211 + flipped = true; newPos = pos; dir = -dir;
1.1212 + }
1.1213 + }
1.1214 + curPos = newPos;
1.1215 + continue search;
1.1216 + }
1.1217 + }
1.1218 + }
1.1219 + return curPos;
1.1220 + }
1.1221 + }
1.1222 +
1.1223 + // SELECTION DRAWING
1.1224 +
1.1225 + // Redraw the selection and/or cursor
1.1226 + function updateSelection(cm) {
1.1227 + var display = cm.display, doc = cm.doc;
1.1228 + var curFragment = document.createDocumentFragment();
1.1229 + var selFragment = document.createDocumentFragment();
1.1230 +
1.1231 + for (var i = 0; i < doc.sel.ranges.length; i++) {
1.1232 + var range = doc.sel.ranges[i];
1.1233 + var collapsed = range.empty();
1.1234 + if (collapsed || cm.options.showCursorWhenSelecting)
1.1235 + updateSelectionCursor(cm, range, curFragment);
1.1236 + if (!collapsed)
1.1237 + updateSelectionRange(cm, range, selFragment);
1.1238 + }
1.1239 +
1.1240 + // Move the hidden textarea near the cursor to prevent scrolling artifacts
1.1241 + if (cm.options.moveInputWithCursor) {
1.1242 + var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
1.1243 + var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
1.1244 + var top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
1.1245 + headPos.top + lineOff.top - wrapOff.top));
1.1246 + var left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
1.1247 + headPos.left + lineOff.left - wrapOff.left));
1.1248 + display.inputDiv.style.top = top + "px";
1.1249 + display.inputDiv.style.left = left + "px";
1.1250 + }
1.1251 +
1.1252 + removeChildrenAndAdd(display.cursorDiv, curFragment);
1.1253 + removeChildrenAndAdd(display.selectionDiv, selFragment);
1.1254 + }
1.1255 +
1.1256 + // Draws a cursor for the given range
1.1257 + function updateSelectionCursor(cm, range, output) {
1.1258 + var pos = cursorCoords(cm, range.head, "div");
1.1259 +
1.1260 + var cursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor"));
1.1261 + cursor.style.left = pos.left + "px";
1.1262 + cursor.style.top = pos.top + "px";
1.1263 + cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
1.1264 +
1.1265 + if (pos.other) {
1.1266 + // Secondary cursor, shown when on a 'jump' in bi-directional text
1.1267 + var otherCursor = output.appendChild(elt("div", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor"));
1.1268 + otherCursor.style.display = "";
1.1269 + otherCursor.style.left = pos.other.left + "px";
1.1270 + otherCursor.style.top = pos.other.top + "px";
1.1271 + otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
1.1272 + }
1.1273 + }
1.1274 +
1.1275 + // Draws the given range as a highlighted selection
1.1276 + function updateSelectionRange(cm, range, output) {
1.1277 + var display = cm.display, doc = cm.doc;
1.1278 + var fragment = document.createDocumentFragment();
1.1279 + var padding = paddingH(cm.display), leftSide = padding.left, rightSide = display.lineSpace.offsetWidth - padding.right;
1.1280 +
1.1281 + function add(left, top, width, bottom) {
1.1282 + if (top < 0) top = 0;
1.1283 + fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
1.1284 + "px; top: " + top + "px; width: " + (width == null ? rightSide - left : width) +
1.1285 + "px; height: " + (bottom - top) + "px"));
1.1286 + }
1.1287 +
1.1288 + function drawForLine(line, fromArg, toArg) {
1.1289 + var lineObj = getLine(doc, line);
1.1290 + var lineLen = lineObj.text.length;
1.1291 + var start, end;
1.1292 + function coords(ch, bias) {
1.1293 + return charCoords(cm, Pos(line, ch), "div", lineObj, bias);
1.1294 + }
1.1295 +
1.1296 + iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
1.1297 + var leftPos = coords(from, "left"), rightPos, left, right;
1.1298 + if (from == to) {
1.1299 + rightPos = leftPos;
1.1300 + left = right = leftPos.left;
1.1301 + } else {
1.1302 + rightPos = coords(to - 1, "right");
1.1303 + if (dir == "rtl") { var tmp = leftPos; leftPos = rightPos; rightPos = tmp; }
1.1304 + left = leftPos.left;
1.1305 + right = rightPos.right;
1.1306 + }
1.1307 + if (fromArg == null && from == 0) left = leftSide;
1.1308 + if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
1.1309 + add(left, leftPos.top, null, leftPos.bottom);
1.1310 + left = leftSide;
1.1311 + if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
1.1312 + }
1.1313 + if (toArg == null && to == lineLen) right = rightSide;
1.1314 + if (!start || leftPos.top < start.top || leftPos.top == start.top && leftPos.left < start.left)
1.1315 + start = leftPos;
1.1316 + if (!end || rightPos.bottom > end.bottom || rightPos.bottom == end.bottom && rightPos.right > end.right)
1.1317 + end = rightPos;
1.1318 + if (left < leftSide + 1) left = leftSide;
1.1319 + add(left, rightPos.top, right - left, rightPos.bottom);
1.1320 + });
1.1321 + return {start: start, end: end};
1.1322 + }
1.1323 +
1.1324 + var sFrom = range.from(), sTo = range.to();
1.1325 + if (sFrom.line == sTo.line) {
1.1326 + drawForLine(sFrom.line, sFrom.ch, sTo.ch);
1.1327 + } else {
1.1328 + var fromLine = getLine(doc, sFrom.line), toLine = getLine(doc, sTo.line);
1.1329 + var singleVLine = visualLine(fromLine) == visualLine(toLine);
1.1330 + var leftEnd = drawForLine(sFrom.line, sFrom.ch, singleVLine ? fromLine.text.length + 1 : null).end;
1.1331 + var rightStart = drawForLine(sTo.line, singleVLine ? 0 : null, sTo.ch).start;
1.1332 + if (singleVLine) {
1.1333 + if (leftEnd.top < rightStart.top - 2) {
1.1334 + add(leftEnd.right, leftEnd.top, null, leftEnd.bottom);
1.1335 + add(leftSide, rightStart.top, rightStart.left, rightStart.bottom);
1.1336 + } else {
1.1337 + add(leftEnd.right, leftEnd.top, rightStart.left - leftEnd.right, leftEnd.bottom);
1.1338 + }
1.1339 + }
1.1340 + if (leftEnd.bottom < rightStart.top)
1.1341 + add(leftSide, leftEnd.bottom, null, rightStart.top);
1.1342 + }
1.1343 +
1.1344 + output.appendChild(fragment);
1.1345 + }
1.1346 +
1.1347 + // Cursor-blinking
1.1348 + function restartBlink(cm) {
1.1349 + if (!cm.state.focused) return;
1.1350 + var display = cm.display;
1.1351 + clearInterval(display.blinker);
1.1352 + var on = true;
1.1353 + display.cursorDiv.style.visibility = "";
1.1354 + if (cm.options.cursorBlinkRate > 0)
1.1355 + display.blinker = setInterval(function() {
1.1356 + display.cursorDiv.style.visibility = (on = !on) ? "" : "hidden";
1.1357 + }, cm.options.cursorBlinkRate);
1.1358 + }
1.1359 +
1.1360 + // HIGHLIGHT WORKER
1.1361 +
1.1362 + function startWorker(cm, time) {
1.1363 + if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
1.1364 + cm.state.highlight.set(time, bind(highlightWorker, cm));
1.1365 + }
1.1366 +
1.1367 + function highlightWorker(cm) {
1.1368 + var doc = cm.doc;
1.1369 + if (doc.frontier < doc.first) doc.frontier = doc.first;
1.1370 + if (doc.frontier >= cm.display.viewTo) return;
1.1371 + var end = +new Date + cm.options.workTime;
1.1372 + var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));
1.1373 +
1.1374 + runInOp(cm, function() {
1.1375 + doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
1.1376 + if (doc.frontier >= cm.display.viewFrom) { // Visible
1.1377 + var oldStyles = line.styles;
1.1378 + line.styles = highlightLine(cm, line, state, true);
1.1379 + var ischange = !oldStyles || oldStyles.length != line.styles.length;
1.1380 + for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];
1.1381 + if (ischange) regLineChange(cm, doc.frontier, "text");
1.1382 + line.stateAfter = copyState(doc.mode, state);
1.1383 + } else {
1.1384 + processLine(cm, line.text, state);
1.1385 + line.stateAfter = doc.frontier % 5 == 0 ? copyState(doc.mode, state) : null;
1.1386 + }
1.1387 + ++doc.frontier;
1.1388 + if (+new Date > end) {
1.1389 + startWorker(cm, cm.options.workDelay);
1.1390 + return true;
1.1391 + }
1.1392 + });
1.1393 + });
1.1394 + }
1.1395 +
1.1396 + // Finds the line to start with when starting a parse. Tries to
1.1397 + // find a line with a stateAfter, so that it can start with a
1.1398 + // valid state. If that fails, it returns the line with the
1.1399 + // smallest indentation, which tends to need the least context to
1.1400 + // parse correctly.
1.1401 + function findStartLine(cm, n, precise) {
1.1402 + var minindent, minline, doc = cm.doc;
1.1403 + var lim = precise ? -1 : n - (cm.doc.mode.innerMode ? 1000 : 100);
1.1404 + for (var search = n; search > lim; --search) {
1.1405 + if (search <= doc.first) return doc.first;
1.1406 + var line = getLine(doc, search - 1);
1.1407 + if (line.stateAfter && (!precise || search <= doc.frontier)) return search;
1.1408 + var indented = countColumn(line.text, null, cm.options.tabSize);
1.1409 + if (minline == null || minindent > indented) {
1.1410 + minline = search - 1;
1.1411 + minindent = indented;
1.1412 + }
1.1413 + }
1.1414 + return minline;
1.1415 + }
1.1416 +
1.1417 + function getStateBefore(cm, n, precise) {
1.1418 + var doc = cm.doc, display = cm.display;
1.1419 + if (!doc.mode.startState) return true;
1.1420 + var pos = findStartLine(cm, n, precise), state = pos > doc.first && getLine(doc, pos-1).stateAfter;
1.1421 + if (!state) state = startState(doc.mode);
1.1422 + else state = copyState(doc.mode, state);
1.1423 + doc.iter(pos, n, function(line) {
1.1424 + processLine(cm, line.text, state);
1.1425 + var save = pos == n - 1 || pos % 5 == 0 || pos >= display.viewFrom && pos < display.viewTo;
1.1426 + line.stateAfter = save ? copyState(doc.mode, state) : null;
1.1427 + ++pos;
1.1428 + });
1.1429 + if (precise) doc.frontier = pos;
1.1430 + return state;
1.1431 + }
1.1432 +
1.1433 + // POSITION MEASUREMENT
1.1434 +
1.1435 + function paddingTop(display) {return display.lineSpace.offsetTop;}
1.1436 + function paddingVert(display) {return display.mover.offsetHeight - display.lineSpace.offsetHeight;}
1.1437 + function paddingH(display) {
1.1438 + if (display.cachedPaddingH) return display.cachedPaddingH;
1.1439 + var e = removeChildrenAndAdd(display.measure, elt("pre", "x"));
1.1440 + var style = window.getComputedStyle ? window.getComputedStyle(e) : e.currentStyle;
1.1441 + return display.cachedPaddingH = {left: parseInt(style.paddingLeft),
1.1442 + right: parseInt(style.paddingRight)};
1.1443 + }
1.1444 +
1.1445 + // Ensure the lineView.wrapping.heights array is populated. This is
1.1446 + // an array of bottom offsets for the lines that make up a drawn
1.1447 + // line. When lineWrapping is on, there might be more than one
1.1448 + // height.
1.1449 + function ensureLineHeights(cm, lineView, rect) {
1.1450 + var wrapping = cm.options.lineWrapping;
1.1451 + var curWidth = wrapping && cm.display.scroller.clientWidth;
1.1452 + if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
1.1453 + var heights = lineView.measure.heights = [];
1.1454 + if (wrapping) {
1.1455 + lineView.measure.width = curWidth;
1.1456 + var rects = lineView.text.firstChild.getClientRects();
1.1457 + for (var i = 0; i < rects.length - 1; i++) {
1.1458 + var cur = rects[i], next = rects[i + 1];
1.1459 + if (Math.abs(cur.bottom - next.bottom) > 2)
1.1460 + heights.push((cur.bottom + next.top) / 2 - rect.top);
1.1461 + }
1.1462 + }
1.1463 + heights.push(rect.bottom - rect.top);
1.1464 + }
1.1465 + }
1.1466 +
1.1467 + // Find a line map (mapping character offsets to text nodes) and a
1.1468 + // measurement cache for the given line number. (A line view might
1.1469 + // contain multiple lines when collapsed ranges are present.)
1.1470 + function mapFromLineView(lineView, line, lineN) {
1.1471 + if (lineView.line == line)
1.1472 + return {map: lineView.measure.map, cache: lineView.measure.cache};
1.1473 + for (var i = 0; i < lineView.rest.length; i++)
1.1474 + if (lineView.rest[i] == line)
1.1475 + return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i]};
1.1476 + for (var i = 0; i < lineView.rest.length; i++)
1.1477 + if (lineNo(lineView.rest[i]) > lineN)
1.1478 + return {map: lineView.measure.maps[i], cache: lineView.measure.caches[i], before: true};
1.1479 + }
1.1480 +
1.1481 + // Render a line into the hidden node display.externalMeasured. Used
1.1482 + // when measurement is needed for a line that's not in the viewport.
1.1483 + function updateExternalMeasurement(cm, line) {
1.1484 + line = visualLine(line);
1.1485 + var lineN = lineNo(line);
1.1486 + var view = cm.display.externalMeasured = new LineView(cm.doc, line, lineN);
1.1487 + view.lineN = lineN;
1.1488 + var built = view.built = buildLineContent(cm, view);
1.1489 + view.text = built.pre;
1.1490 + removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
1.1491 + return view;
1.1492 + }
1.1493 +
1.1494 + // Get a {top, bottom, left, right} box (in line-local coordinates)
1.1495 + // for a given character.
1.1496 + function measureChar(cm, line, ch, bias) {
1.1497 + return measureCharPrepared(cm, prepareMeasureForLine(cm, line), ch, bias);
1.1498 + }
1.1499 +
1.1500 + // Find a line view that corresponds to the given line number.
1.1501 + function findViewForLine(cm, lineN) {
1.1502 + if (lineN >= cm.display.viewFrom && lineN < cm.display.viewTo)
1.1503 + return cm.display.view[findViewIndex(cm, lineN)];
1.1504 + var ext = cm.display.externalMeasured;
1.1505 + if (ext && lineN >= ext.lineN && lineN < ext.lineN + ext.size)
1.1506 + return ext;
1.1507 + }
1.1508 +
1.1509 + // Measurement can be split in two steps, the set-up work that
1.1510 + // applies to the whole line, and the measurement of the actual
1.1511 + // character. Functions like coordsChar, that need to do a lot of
1.1512 + // measurements in a row, can thus ensure that the set-up work is
1.1513 + // only done once.
1.1514 + function prepareMeasureForLine(cm, line) {
1.1515 + var lineN = lineNo(line);
1.1516 + var view = findViewForLine(cm, lineN);
1.1517 + if (view && !view.text)
1.1518 + view = null;
1.1519 + else if (view && view.changes)
1.1520 + updateLineForChanges(cm, view, lineN, getDimensions(cm));
1.1521 + if (!view)
1.1522 + view = updateExternalMeasurement(cm, line);
1.1523 +
1.1524 + var info = mapFromLineView(view, line, lineN);
1.1525 + return {
1.1526 + line: line, view: view, rect: null,
1.1527 + map: info.map, cache: info.cache, before: info.before,
1.1528 + hasHeights: false
1.1529 + };
1.1530 + }
1.1531 +
1.1532 + // Given a prepared measurement object, measures the position of an
1.1533 + // actual character (or fetches it from the cache).
1.1534 + function measureCharPrepared(cm, prepared, ch, bias) {
1.1535 + if (prepared.before) ch = -1;
1.1536 + var key = ch + (bias || ""), found;
1.1537 + if (prepared.cache.hasOwnProperty(key)) {
1.1538 + found = prepared.cache[key];
1.1539 + } else {
1.1540 + if (!prepared.rect)
1.1541 + prepared.rect = prepared.view.text.getBoundingClientRect();
1.1542 + if (!prepared.hasHeights) {
1.1543 + ensureLineHeights(cm, prepared.view, prepared.rect);
1.1544 + prepared.hasHeights = true;
1.1545 + }
1.1546 + found = measureCharInner(cm, prepared, ch, bias);
1.1547 + if (!found.bogus) prepared.cache[key] = found;
1.1548 + }
1.1549 + return {left: found.left, right: found.right, top: found.top, bottom: found.bottom};
1.1550 + }
1.1551 +
1.1552 + var nullRect = {left: 0, right: 0, top: 0, bottom: 0};
1.1553 +
1.1554 + function measureCharInner(cm, prepared, ch, bias) {
1.1555 + var map = prepared.map;
1.1556 +
1.1557 + var node, start, end, collapse;
1.1558 + // First, search the line map for the text node corresponding to,
1.1559 + // or closest to, the target character.
1.1560 + for (var i = 0; i < map.length; i += 3) {
1.1561 + var mStart = map[i], mEnd = map[i + 1];
1.1562 + if (ch < mStart) {
1.1563 + start = 0; end = 1;
1.1564 + collapse = "left";
1.1565 + } else if (ch < mEnd) {
1.1566 + start = ch - mStart;
1.1567 + end = start + 1;
1.1568 + } else if (i == map.length - 3 || ch == mEnd && map[i + 3] > ch) {
1.1569 + end = mEnd - mStart;
1.1570 + start = end - 1;
1.1571 + if (ch >= mEnd) collapse = "right";
1.1572 + }
1.1573 + if (start != null) {
1.1574 + node = map[i + 2];
1.1575 + if (mStart == mEnd && bias == (node.insertLeft ? "left" : "right"))
1.1576 + collapse = bias;
1.1577 + if (bias == "left" && start == 0)
1.1578 + while (i && map[i - 2] == map[i - 3] && map[i - 1].insertLeft) {
1.1579 + node = map[(i -= 3) + 2];
1.1580 + collapse = "left";
1.1581 + }
1.1582 + if (bias == "right" && start == mEnd - mStart)
1.1583 + while (i < map.length - 3 && map[i + 3] == map[i + 4] && !map[i + 5].insertLeft) {
1.1584 + node = map[(i += 3) + 2];
1.1585 + collapse = "right";
1.1586 + }
1.1587 + break;
1.1588 + }
1.1589 + }
1.1590 +
1.1591 + var rect;
1.1592 + if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.
1.1593 + while (start && isExtendingChar(prepared.line.text.charAt(mStart + start))) --start;
1.1594 + while (mStart + end < mEnd && isExtendingChar(prepared.line.text.charAt(mStart + end))) ++end;
1.1595 + if (ie_upto8 && start == 0 && end == mEnd - mStart) {
1.1596 + rect = node.parentNode.getBoundingClientRect();
1.1597 + } else if (ie && cm.options.lineWrapping) {
1.1598 + var rects = range(node, start, end).getClientRects();
1.1599 + if (rects.length)
1.1600 + rect = rects[bias == "right" ? rects.length - 1 : 0];
1.1601 + else
1.1602 + rect = nullRect;
1.1603 + } else {
1.1604 + rect = range(node, start, end).getBoundingClientRect();
1.1605 + }
1.1606 + } else { // If it is a widget, simply get the box for the whole widget.
1.1607 + if (start > 0) collapse = bias = "right";
1.1608 + var rects;
1.1609 + if (cm.options.lineWrapping && (rects = node.getClientRects()).length > 1)
1.1610 + rect = rects[bias == "right" ? rects.length - 1 : 0];
1.1611 + else
1.1612 + rect = node.getBoundingClientRect();
1.1613 + }
1.1614 + if (ie_upto8 && !start && (!rect || !rect.left && !rect.right)) {
1.1615 + var rSpan = node.parentNode.getClientRects()[0];
1.1616 + if (rSpan)
1.1617 + rect = {left: rSpan.left, right: rSpan.left + charWidth(cm.display), top: rSpan.top, bottom: rSpan.bottom};
1.1618 + else
1.1619 + rect = nullRect;
1.1620 + }
1.1621 +
1.1622 + var top, bot = (rect.bottom + rect.top) / 2 - prepared.rect.top;
1.1623 + var heights = prepared.view.measure.heights;
1.1624 + for (var i = 0; i < heights.length - 1; i++)
1.1625 + if (bot < heights[i]) break;
1.1626 + top = i ? heights[i - 1] : 0; bot = heights[i];
1.1627 + var result = {left: (collapse == "right" ? rect.right : rect.left) - prepared.rect.left,
1.1628 + right: (collapse == "left" ? rect.left : rect.right) - prepared.rect.left,
1.1629 + top: top, bottom: bot};
1.1630 + if (!rect.left && !rect.right) result.bogus = true;
1.1631 + return result;
1.1632 + }
1.1633 +
1.1634 + function clearLineMeasurementCacheFor(lineView) {
1.1635 + if (lineView.measure) {
1.1636 + lineView.measure.cache = {};
1.1637 + lineView.measure.heights = null;
1.1638 + if (lineView.rest) for (var i = 0; i < lineView.rest.length; i++)
1.1639 + lineView.measure.caches[i] = {};
1.1640 + }
1.1641 + }
1.1642 +
1.1643 + function clearLineMeasurementCache(cm) {
1.1644 + cm.display.externalMeasure = null;
1.1645 + removeChildren(cm.display.lineMeasure);
1.1646 + for (var i = 0; i < cm.display.view.length; i++)
1.1647 + clearLineMeasurementCacheFor(cm.display.view[i]);
1.1648 + }
1.1649 +
1.1650 + function clearCaches(cm) {
1.1651 + clearLineMeasurementCache(cm);
1.1652 + cm.display.cachedCharWidth = cm.display.cachedTextHeight = cm.display.cachedPaddingH = null;
1.1653 + if (!cm.options.lineWrapping) cm.display.maxLineChanged = true;
1.1654 + cm.display.lineNumChars = null;
1.1655 + }
1.1656 +
1.1657 + function pageScrollX() { return window.pageXOffset || (document.documentElement || document.body).scrollLeft; }
1.1658 + function pageScrollY() { return window.pageYOffset || (document.documentElement || document.body).scrollTop; }
1.1659 +
1.1660 + // Converts a {top, bottom, left, right} box from line-local
1.1661 + // coordinates into another coordinate system. Context may be one of
1.1662 + // "line", "div" (display.lineDiv), "local"/null (editor), or "page".
1.1663 + function intoCoordSystem(cm, lineObj, rect, context) {
1.1664 + if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
1.1665 + var size = widgetHeight(lineObj.widgets[i]);
1.1666 + rect.top += size; rect.bottom += size;
1.1667 + }
1.1668 + if (context == "line") return rect;
1.1669 + if (!context) context = "local";
1.1670 + var yOff = heightAtLine(lineObj);
1.1671 + if (context == "local") yOff += paddingTop(cm.display);
1.1672 + else yOff -= cm.display.viewOffset;
1.1673 + if (context == "page" || context == "window") {
1.1674 + var lOff = cm.display.lineSpace.getBoundingClientRect();
1.1675 + yOff += lOff.top + (context == "window" ? 0 : pageScrollY());
1.1676 + var xOff = lOff.left + (context == "window" ? 0 : pageScrollX());
1.1677 + rect.left += xOff; rect.right += xOff;
1.1678 + }
1.1679 + rect.top += yOff; rect.bottom += yOff;
1.1680 + return rect;
1.1681 + }
1.1682 +
1.1683 + // Coverts a box from "div" coords to another coordinate system.
1.1684 + // Context may be "window", "page", "div", or "local"/null.
1.1685 + function fromCoordSystem(cm, coords, context) {
1.1686 + if (context == "div") return coords;
1.1687 + var left = coords.left, top = coords.top;
1.1688 + // First move into "page" coordinate system
1.1689 + if (context == "page") {
1.1690 + left -= pageScrollX();
1.1691 + top -= pageScrollY();
1.1692 + } else if (context == "local" || !context) {
1.1693 + var localBox = cm.display.sizer.getBoundingClientRect();
1.1694 + left += localBox.left;
1.1695 + top += localBox.top;
1.1696 + }
1.1697 +
1.1698 + var lineSpaceBox = cm.display.lineSpace.getBoundingClientRect();
1.1699 + return {left: left - lineSpaceBox.left, top: top - lineSpaceBox.top};
1.1700 + }
1.1701 +
1.1702 + function charCoords(cm, pos, context, lineObj, bias) {
1.1703 + if (!lineObj) lineObj = getLine(cm.doc, pos.line);
1.1704 + return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch, bias), context);
1.1705 + }
1.1706 +
1.1707 + // Returns a box for a given cursor position, which may have an
1.1708 + // 'other' property containing the position of the secondary cursor
1.1709 + // on a bidi boundary.
1.1710 + function cursorCoords(cm, pos, context, lineObj, preparedMeasure) {
1.1711 + lineObj = lineObj || getLine(cm.doc, pos.line);
1.1712 + if (!preparedMeasure) preparedMeasure = prepareMeasureForLine(cm, lineObj);
1.1713 + function get(ch, right) {
1.1714 + var m = measureCharPrepared(cm, preparedMeasure, ch, right ? "right" : "left");
1.1715 + if (right) m.left = m.right; else m.right = m.left;
1.1716 + return intoCoordSystem(cm, lineObj, m, context);
1.1717 + }
1.1718 + function getBidi(ch, partPos) {
1.1719 + var part = order[partPos], right = part.level % 2;
1.1720 + if (ch == bidiLeft(part) && partPos && part.level < order[partPos - 1].level) {
1.1721 + part = order[--partPos];
1.1722 + ch = bidiRight(part) - (part.level % 2 ? 0 : 1);
1.1723 + right = true;
1.1724 + } else if (ch == bidiRight(part) && partPos < order.length - 1 && part.level < order[partPos + 1].level) {
1.1725 + part = order[++partPos];
1.1726 + ch = bidiLeft(part) - part.level % 2;
1.1727 + right = false;
1.1728 + }
1.1729 + if (right && ch == part.to && ch > part.from) return get(ch - 1);
1.1730 + return get(ch, right);
1.1731 + }
1.1732 + var order = getOrder(lineObj), ch = pos.ch;
1.1733 + if (!order) return get(ch);
1.1734 + var partPos = getBidiPartAt(order, ch);
1.1735 + var val = getBidi(ch, partPos);
1.1736 + if (bidiOther != null) val.other = getBidi(ch, bidiOther);
1.1737 + return val;
1.1738 + }
1.1739 +
1.1740 + // Used to cheaply estimate the coordinates for a position. Used for
1.1741 + // intermediate scroll updates.
1.1742 + function estimateCoords(cm, pos) {
1.1743 + var left = 0, pos = clipPos(cm.doc, pos);
1.1744 + if (!cm.options.lineWrapping) left = charWidth(cm.display) * pos.ch;
1.1745 + var lineObj = getLine(cm.doc, pos.line);
1.1746 + var top = heightAtLine(lineObj) + paddingTop(cm.display);
1.1747 + return {left: left, right: left, top: top, bottom: top + lineObj.height};
1.1748 + }
1.1749 +
1.1750 + // Positions returned by coordsChar contain some extra information.
1.1751 + // xRel is the relative x position of the input coordinates compared
1.1752 + // to the found position (so xRel > 0 means the coordinates are to
1.1753 + // the right of the character position, for example). When outside
1.1754 + // is true, that means the coordinates lie outside the line's
1.1755 + // vertical range.
1.1756 + function PosWithInfo(line, ch, outside, xRel) {
1.1757 + var pos = Pos(line, ch);
1.1758 + pos.xRel = xRel;
1.1759 + if (outside) pos.outside = true;
1.1760 + return pos;
1.1761 + }
1.1762 +
1.1763 + // Compute the character position closest to the given coordinates.
1.1764 + // Input must be lineSpace-local ("div" coordinate system).
1.1765 + function coordsChar(cm, x, y) {
1.1766 + var doc = cm.doc;
1.1767 + y += cm.display.viewOffset;
1.1768 + if (y < 0) return PosWithInfo(doc.first, 0, true, -1);
1.1769 + var lineN = lineAtHeight(doc, y), last = doc.first + doc.size - 1;
1.1770 + if (lineN > last)
1.1771 + return PosWithInfo(doc.first + doc.size - 1, getLine(doc, last).text.length, true, 1);
1.1772 + if (x < 0) x = 0;
1.1773 +
1.1774 + var lineObj = getLine(doc, lineN);
1.1775 + for (;;) {
1.1776 + var found = coordsCharInner(cm, lineObj, lineN, x, y);
1.1777 + var merged = collapsedSpanAtEnd(lineObj);
1.1778 + var mergedPos = merged && merged.find(0, true);
1.1779 + if (merged && (found.ch > mergedPos.from.ch || found.ch == mergedPos.from.ch && found.xRel > 0))
1.1780 + lineN = lineNo(lineObj = mergedPos.to.line);
1.1781 + else
1.1782 + return found;
1.1783 + }
1.1784 + }
1.1785 +
1.1786 + function coordsCharInner(cm, lineObj, lineNo, x, y) {
1.1787 + var innerOff = y - heightAtLine(lineObj);
1.1788 + var wrongLine = false, adjust = 2 * cm.display.wrapper.clientWidth;
1.1789 + var preparedMeasure = prepareMeasureForLine(cm, lineObj);
1.1790 +
1.1791 + function getX(ch) {
1.1792 + var sp = cursorCoords(cm, Pos(lineNo, ch), "line", lineObj, preparedMeasure);
1.1793 + wrongLine = true;
1.1794 + if (innerOff > sp.bottom) return sp.left - adjust;
1.1795 + else if (innerOff < sp.top) return sp.left + adjust;
1.1796 + else wrongLine = false;
1.1797 + return sp.left;
1.1798 + }
1.1799 +
1.1800 + var bidi = getOrder(lineObj), dist = lineObj.text.length;
1.1801 + var from = lineLeft(lineObj), to = lineRight(lineObj);
1.1802 + var fromX = getX(from), fromOutside = wrongLine, toX = getX(to), toOutside = wrongLine;
1.1803 +
1.1804 + if (x > toX) return PosWithInfo(lineNo, to, toOutside, 1);
1.1805 + // Do a binary search between these bounds.
1.1806 + for (;;) {
1.1807 + if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
1.1808 + var ch = x < fromX || x - fromX <= toX - x ? from : to;
1.1809 + var xDiff = x - (ch == from ? fromX : toX);
1.1810 + while (isExtendingChar(lineObj.text.charAt(ch))) ++ch;
1.1811 + var pos = PosWithInfo(lineNo, ch, ch == from ? fromOutside : toOutside,
1.1812 + xDiff < -1 ? -1 : xDiff > 1 ? 1 : 0);
1.1813 + return pos;
1.1814 + }
1.1815 + var step = Math.ceil(dist / 2), middle = from + step;
1.1816 + if (bidi) {
1.1817 + middle = from;
1.1818 + for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
1.1819 + }
1.1820 + var middleX = getX(middle);
1.1821 + if (middleX > x) {to = middle; toX = middleX; if (toOutside = wrongLine) toX += 1000; dist = step;}
1.1822 + else {from = middle; fromX = middleX; fromOutside = wrongLine; dist -= step;}
1.1823 + }
1.1824 + }
1.1825 +
1.1826 + var measureText;
1.1827 + // Compute the default text height.
1.1828 + function textHeight(display) {
1.1829 + if (display.cachedTextHeight != null) return display.cachedTextHeight;
1.1830 + if (measureText == null) {
1.1831 + measureText = elt("pre");
1.1832 + // Measure a bunch of lines, for browsers that compute
1.1833 + // fractional heights.
1.1834 + for (var i = 0; i < 49; ++i) {
1.1835 + measureText.appendChild(document.createTextNode("x"));
1.1836 + measureText.appendChild(elt("br"));
1.1837 + }
1.1838 + measureText.appendChild(document.createTextNode("x"));
1.1839 + }
1.1840 + removeChildrenAndAdd(display.measure, measureText);
1.1841 + var height = measureText.offsetHeight / 50;
1.1842 + if (height > 3) display.cachedTextHeight = height;
1.1843 + removeChildren(display.measure);
1.1844 + return height || 1;
1.1845 + }
1.1846 +
1.1847 + // Compute the default character width.
1.1848 + function charWidth(display) {
1.1849 + if (display.cachedCharWidth != null) return display.cachedCharWidth;
1.1850 + var anchor = elt("span", "xxxxxxxxxx");
1.1851 + var pre = elt("pre", [anchor]);
1.1852 + removeChildrenAndAdd(display.measure, pre);
1.1853 + var rect = anchor.getBoundingClientRect(), width = (rect.right - rect.left) / 10;
1.1854 + if (width > 2) display.cachedCharWidth = width;
1.1855 + return width || 10;
1.1856 + }
1.1857 +
1.1858 + // OPERATIONS
1.1859 +
1.1860 + // Operations are used to wrap a series of changes to the editor
1.1861 + // state in such a way that each change won't have to update the
1.1862 + // cursor and display (which would be awkward, slow, and
1.1863 + // error-prone). Instead, display updates are batched and then all
1.1864 + // combined and executed at once.
1.1865 +
1.1866 + var nextOpId = 0;
1.1867 + // Start a new operation.
1.1868 + function startOperation(cm) {
1.1869 + cm.curOp = {
1.1870 + viewChanged: false, // Flag that indicates that lines might need to be redrawn
1.1871 + startHeight: cm.doc.height, // Used to detect need to update scrollbar
1.1872 + forceUpdate: false, // Used to force a redraw
1.1873 + updateInput: null, // Whether to reset the input textarea
1.1874 + typing: false, // Whether this reset should be careful to leave existing text (for compositing)
1.1875 + changeObjs: null, // Accumulated changes, for firing change events
1.1876 + cursorActivity: false, // Whether to fire a cursorActivity event
1.1877 + selectionChanged: false, // Whether the selection needs to be redrawn
1.1878 + updateMaxLine: false, // Set when the widest line needs to be determined anew
1.1879 + scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
1.1880 + scrollToPos: null, // Used to scroll to a specific position
1.1881 + id: ++nextOpId // Unique ID
1.1882 + };
1.1883 + if (!delayedCallbackDepth++) delayedCallbacks = [];
1.1884 + }
1.1885 +
1.1886 + // Finish an operation, updating the display and signalling delayed events
1.1887 + function endOperation(cm) {
1.1888 + var op = cm.curOp, doc = cm.doc, display = cm.display;
1.1889 + cm.curOp = null;
1.1890 +
1.1891 + if (op.updateMaxLine) findMaxLine(cm);
1.1892 +
1.1893 + // If it looks like an update might be needed, call updateDisplay
1.1894 + if (op.viewChanged || op.forceUpdate || op.scrollTop != null ||
1.1895 + op.scrollToPos && (op.scrollToPos.from.line < display.viewFrom ||
1.1896 + op.scrollToPos.to.line >= display.viewTo) ||
1.1897 + display.maxLineChanged && cm.options.lineWrapping) {
1.1898 + var updated = updateDisplay(cm, {top: op.scrollTop, ensure: op.scrollToPos}, op.forceUpdate);
1.1899 + if (cm.display.scroller.offsetHeight) cm.doc.scrollTop = cm.display.scroller.scrollTop;
1.1900 + }
1.1901 + // If no update was run, but the selection changed, redraw that.
1.1902 + if (!updated && op.selectionChanged) updateSelection(cm);
1.1903 + if (!updated && op.startHeight != cm.doc.height) updateScrollbars(cm);
1.1904 +
1.1905 + // Propagate the scroll position to the actual DOM scroller
1.1906 + if (op.scrollTop != null && display.scroller.scrollTop != op.scrollTop) {
1.1907 + var top = Math.max(0, Math.min(display.scroller.scrollHeight - display.scroller.clientHeight, op.scrollTop));
1.1908 + display.scroller.scrollTop = display.scrollbarV.scrollTop = doc.scrollTop = top;
1.1909 + }
1.1910 + if (op.scrollLeft != null && display.scroller.scrollLeft != op.scrollLeft) {
1.1911 + var left = Math.max(0, Math.min(display.scroller.scrollWidth - display.scroller.clientWidth, op.scrollLeft));
1.1912 + display.scroller.scrollLeft = display.scrollbarH.scrollLeft = doc.scrollLeft = left;
1.1913 + alignHorizontally(cm);
1.1914 + }
1.1915 + // If we need to scroll a specific position into view, do so.
1.1916 + if (op.scrollToPos) {
1.1917 + var coords = scrollPosIntoView(cm, clipPos(cm.doc, op.scrollToPos.from),
1.1918 + clipPos(cm.doc, op.scrollToPos.to), op.scrollToPos.margin);
1.1919 + if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
1.1920 + }
1.1921 +
1.1922 + if (op.selectionChanged) restartBlink(cm);
1.1923 +
1.1924 + if (cm.state.focused && op.updateInput)
1.1925 + resetInput(cm, op.typing);
1.1926 +
1.1927 + // Fire events for markers that are hidden/unidden by editing or
1.1928 + // undoing
1.1929 + var hidden = op.maybeHiddenMarkers, unhidden = op.maybeUnhiddenMarkers;
1.1930 + if (hidden) for (var i = 0; i < hidden.length; ++i)
1.1931 + if (!hidden[i].lines.length) signal(hidden[i], "hide");
1.1932 + if (unhidden) for (var i = 0; i < unhidden.length; ++i)
1.1933 + if (unhidden[i].lines.length) signal(unhidden[i], "unhide");
1.1934 +
1.1935 + var delayed;
1.1936 + if (!--delayedCallbackDepth) {
1.1937 + delayed = delayedCallbacks;
1.1938 + delayedCallbacks = null;
1.1939 + }
1.1940 + // Fire change events, and delayed event handlers
1.1941 + if (op.changeObjs) {
1.1942 + for (var i = 0; i < op.changeObjs.length; i++)
1.1943 + signal(cm, "change", cm, op.changeObjs[i]);
1.1944 + signal(cm, "changes", cm, op.changeObjs);
1.1945 + }
1.1946 + if (op.cursorActivity) signal(cm, "cursorActivity", cm);
1.1947 + if (delayed) for (var i = 0; i < delayed.length; ++i) delayed[i]();
1.1948 + }
1.1949 +
1.1950 + // Run the given function in an operation
1.1951 + function runInOp(cm, f) {
1.1952 + if (cm.curOp) return f();
1.1953 + startOperation(cm);
1.1954 + try { return f(); }
1.1955 + finally { endOperation(cm); }
1.1956 + }
1.1957 + // Wraps a function in an operation. Returns the wrapped function.
1.1958 + function operation(cm, f) {
1.1959 + return function() {
1.1960 + if (cm.curOp) return f.apply(cm, arguments);
1.1961 + startOperation(cm);
1.1962 + try { return f.apply(cm, arguments); }
1.1963 + finally { endOperation(cm); }
1.1964 + };
1.1965 + }
1.1966 + // Used to add methods to editor and doc instances, wrapping them in
1.1967 + // operations.
1.1968 + function methodOp(f) {
1.1969 + return function() {
1.1970 + if (this.curOp) return f.apply(this, arguments);
1.1971 + startOperation(this);
1.1972 + try { return f.apply(this, arguments); }
1.1973 + finally { endOperation(this); }
1.1974 + };
1.1975 + }
1.1976 + function docMethodOp(f) {
1.1977 + return function() {
1.1978 + var cm = this.cm;
1.1979 + if (!cm || cm.curOp) return f.apply(this, arguments);
1.1980 + startOperation(cm);
1.1981 + try { return f.apply(this, arguments); }
1.1982 + finally { endOperation(cm); }
1.1983 + };
1.1984 + }
1.1985 +
1.1986 + // VIEW TRACKING
1.1987 +
1.1988 + // These objects are used to represent the visible (currently drawn)
1.1989 + // part of the document. A LineView may correspond to multiple
1.1990 + // logical lines, if those are connected by collapsed ranges.
1.1991 + function LineView(doc, line, lineN) {
1.1992 + // The starting line
1.1993 + this.line = line;
1.1994 + // Continuing lines, if any
1.1995 + this.rest = visualLineContinued(line);
1.1996 + // Number of logical lines in this visual line
1.1997 + this.size = this.rest ? lineNo(lst(this.rest)) - lineN + 1 : 1;
1.1998 + this.node = this.text = null;
1.1999 + this.hidden = lineIsHidden(doc, line);
1.2000 + }
1.2001 +
1.2002 + // Create a range of LineView objects for the given lines.
1.2003 + function buildViewArray(cm, from, to) {
1.2004 + var array = [], nextPos;
1.2005 + for (var pos = from; pos < to; pos = nextPos) {
1.2006 + var view = new LineView(cm.doc, getLine(cm.doc, pos), pos);
1.2007 + nextPos = pos + view.size;
1.2008 + array.push(view);
1.2009 + }
1.2010 + return array;
1.2011 + }
1.2012 +
1.2013 + // Updates the display.view data structure for a given change to the
1.2014 + // document. From and to are in pre-change coordinates. Lendiff is
1.2015 + // the amount of lines added or subtracted by the change. This is
1.2016 + // used for changes that span multiple lines, or change the way
1.2017 + // lines are divided into visual lines. regLineChange (below)
1.2018 + // registers single-line changes.
1.2019 + function regChange(cm, from, to, lendiff) {
1.2020 + if (from == null) from = cm.doc.first;
1.2021 + if (to == null) to = cm.doc.first + cm.doc.size;
1.2022 + if (!lendiff) lendiff = 0;
1.2023 +
1.2024 + var display = cm.display;
1.2025 + if (lendiff && to < display.viewTo &&
1.2026 + (display.updateLineNumbers == null || display.updateLineNumbers > from))
1.2027 + display.updateLineNumbers = from;
1.2028 +
1.2029 + cm.curOp.viewChanged = true;
1.2030 +
1.2031 + if (from >= display.viewTo) { // Change after
1.2032 + if (sawCollapsedSpans && visualLineNo(cm.doc, from) < display.viewTo)
1.2033 + resetView(cm);
1.2034 + } else if (to <= display.viewFrom) { // Change before
1.2035 + if (sawCollapsedSpans && visualLineEndNo(cm.doc, to + lendiff) > display.viewFrom) {
1.2036 + resetView(cm);
1.2037 + } else {
1.2038 + display.viewFrom += lendiff;
1.2039 + display.viewTo += lendiff;
1.2040 + }
1.2041 + } else if (from <= display.viewFrom && to >= display.viewTo) { // Full overlap
1.2042 + resetView(cm);
1.2043 + } else if (from <= display.viewFrom) { // Top overlap
1.2044 + var cut = viewCuttingPoint(cm, to, to + lendiff, 1);
1.2045 + if (cut) {
1.2046 + display.view = display.view.slice(cut.index);
1.2047 + display.viewFrom = cut.lineN;
1.2048 + display.viewTo += lendiff;
1.2049 + } else {
1.2050 + resetView(cm);
1.2051 + }
1.2052 + } else if (to >= display.viewTo) { // Bottom overlap
1.2053 + var cut = viewCuttingPoint(cm, from, from, -1);
1.2054 + if (cut) {
1.2055 + display.view = display.view.slice(0, cut.index);
1.2056 + display.viewTo = cut.lineN;
1.2057 + } else {
1.2058 + resetView(cm);
1.2059 + }
1.2060 + } else { // Gap in the middle
1.2061 + var cutTop = viewCuttingPoint(cm, from, from, -1);
1.2062 + var cutBot = viewCuttingPoint(cm, to, to + lendiff, 1);
1.2063 + if (cutTop && cutBot) {
1.2064 + display.view = display.view.slice(0, cutTop.index)
1.2065 + .concat(buildViewArray(cm, cutTop.lineN, cutBot.lineN))
1.2066 + .concat(display.view.slice(cutBot.index));
1.2067 + display.viewTo += lendiff;
1.2068 + } else {
1.2069 + resetView(cm);
1.2070 + }
1.2071 + }
1.2072 +
1.2073 + var ext = display.externalMeasured;
1.2074 + if (ext) {
1.2075 + if (to < ext.lineN)
1.2076 + ext.lineN += lendiff;
1.2077 + else if (from < ext.lineN + ext.size)
1.2078 + display.externalMeasured = null;
1.2079 + }
1.2080 + }
1.2081 +
1.2082 + // Register a change to a single line. Type must be one of "text",
1.2083 + // "gutter", "class", "widget"
1.2084 + function regLineChange(cm, line, type) {
1.2085 + cm.curOp.viewChanged = true;
1.2086 + var display = cm.display, ext = cm.display.externalMeasured;
1.2087 + if (ext && line >= ext.lineN && line < ext.lineN + ext.size)
1.2088 + display.externalMeasured = null;
1.2089 +
1.2090 + if (line < display.viewFrom || line >= display.viewTo) return;
1.2091 + var lineView = display.view[findViewIndex(cm, line)];
1.2092 + if (lineView.node == null) return;
1.2093 + var arr = lineView.changes || (lineView.changes = []);
1.2094 + if (indexOf(arr, type) == -1) arr.push(type);
1.2095 + }
1.2096 +
1.2097 + // Clear the view.
1.2098 + function resetView(cm) {
1.2099 + cm.display.viewFrom = cm.display.viewTo = cm.doc.first;
1.2100 + cm.display.view = [];
1.2101 + cm.display.viewOffset = 0;
1.2102 + }
1.2103 +
1.2104 + // Find the view element corresponding to a given line. Return null
1.2105 + // when the line isn't visible.
1.2106 + function findViewIndex(cm, n) {
1.2107 + if (n >= cm.display.viewTo) return null;
1.2108 + n -= cm.display.viewFrom;
1.2109 + if (n < 0) return null;
1.2110 + var view = cm.display.view;
1.2111 + for (var i = 0; i < view.length; i++) {
1.2112 + n -= view[i].size;
1.2113 + if (n < 0) return i;
1.2114 + }
1.2115 + }
1.2116 +
1.2117 + function viewCuttingPoint(cm, oldN, newN, dir) {
1.2118 + var index = findViewIndex(cm, oldN), diff, view = cm.display.view;
1.2119 + if (!sawCollapsedSpans) return {index: index, lineN: newN};
1.2120 + for (var i = 0, n = cm.display.viewFrom; i < index; i++)
1.2121 + n += view[i].size;
1.2122 + if (n != oldN) {
1.2123 + if (dir > 0) {
1.2124 + if (index == view.length - 1) return null;
1.2125 + diff = (n + view[index].size) - oldN;
1.2126 + index++;
1.2127 + } else {
1.2128 + diff = n - oldN;
1.2129 + }
1.2130 + oldN += diff; newN += diff;
1.2131 + }
1.2132 + while (visualLineNo(cm.doc, newN) != newN) {
1.2133 + if (index == (dir < 0 ? 0 : view.length - 1)) return null;
1.2134 + newN += dir * view[index - (dir < 0 ? 1 : 0)].size;
1.2135 + index += dir;
1.2136 + }
1.2137 + return {index: index, lineN: newN};
1.2138 + }
1.2139 +
1.2140 + // Force the view to cover a given range, adding empty view element
1.2141 + // or clipping off existing ones as needed.
1.2142 + function adjustView(cm, from, to) {
1.2143 + var display = cm.display, view = display.view;
1.2144 + if (view.length == 0 || from >= display.viewTo || to <= display.viewFrom) {
1.2145 + display.view = buildViewArray(cm, from, to);
1.2146 + display.viewFrom = from;
1.2147 + } else {
1.2148 + if (display.viewFrom > from)
1.2149 + display.view = buildViewArray(cm, from, display.viewFrom).concat(display.view);
1.2150 + else if (display.viewFrom < from)
1.2151 + display.view = display.view.slice(findViewIndex(cm, from));
1.2152 + display.viewFrom = from;
1.2153 + if (display.viewTo < to)
1.2154 + display.view = display.view.concat(buildViewArray(cm, display.viewTo, to));
1.2155 + else if (display.viewTo > to)
1.2156 + display.view = display.view.slice(0, findViewIndex(cm, to));
1.2157 + }
1.2158 + display.viewTo = to;
1.2159 + }
1.2160 +
1.2161 + // Count the number of lines in the view whose DOM representation is
1.2162 + // out of date (or nonexistent).
1.2163 + function countDirtyView(cm) {
1.2164 + var view = cm.display.view, dirty = 0;
1.2165 + for (var i = 0; i < view.length; i++) {
1.2166 + var lineView = view[i];
1.2167 + if (!lineView.hidden && (!lineView.node || lineView.changes)) ++dirty;
1.2168 + }
1.2169 + return dirty;
1.2170 + }
1.2171 +
1.2172 + // INPUT HANDLING
1.2173 +
1.2174 + // Poll for input changes, using the normal rate of polling. This
1.2175 + // runs as long as the editor is focused.
1.2176 + function slowPoll(cm) {
1.2177 + if (cm.display.pollingFast) return;
1.2178 + cm.display.poll.set(cm.options.pollInterval, function() {
1.2179 + readInput(cm);
1.2180 + if (cm.state.focused) slowPoll(cm);
1.2181 + });
1.2182 + }
1.2183 +
1.2184 + // When an event has just come in that is likely to add or change
1.2185 + // something in the input textarea, we poll faster, to ensure that
1.2186 + // the change appears on the screen quickly.
1.2187 + function fastPoll(cm) {
1.2188 + var missed = false;
1.2189 + cm.display.pollingFast = true;
1.2190 + function p() {
1.2191 + var changed = readInput(cm);
1.2192 + if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
1.2193 + else {cm.display.pollingFast = false; slowPoll(cm);}
1.2194 + }
1.2195 + cm.display.poll.set(20, p);
1.2196 + }
1.2197 +
1.2198 + // Read input from the textarea, and update the document to match.
1.2199 + // When something is selected, it is present in the textarea, and
1.2200 + // selected (unless it is huge, in which case a placeholder is
1.2201 + // used). When nothing is selected, the cursor sits after previously
1.2202 + // seen text (can be empty), which is stored in prevInput (we must
1.2203 + // not reset the textarea when typing, because that breaks IME).
1.2204 + function readInput(cm) {
1.2205 + var input = cm.display.input, prevInput = cm.display.prevInput, doc = cm.doc;
1.2206 + // Since this is called a *lot*, try to bail out as cheaply as
1.2207 + // possible when it is clear that nothing happened. hasSelection
1.2208 + // will be the case when there is a lot of text in the textarea,
1.2209 + // in which case reading its value would be expensive.
1.2210 + if (!cm.state.focused || hasSelection(input) || isReadOnly(cm) || cm.options.disableInput) return false;
1.2211 + var text = input.value;
1.2212 + // If nothing changed, bail.
1.2213 + if (text == prevInput && !cm.somethingSelected()) return false;
1.2214 + // Work around nonsensical selection resetting in IE9/10
1.2215 + if (ie && !ie_upto8 && cm.display.inputHasSelection === text) {
1.2216 + resetInput(cm);
1.2217 + return false;
1.2218 + }
1.2219 +
1.2220 + var withOp = !cm.curOp;
1.2221 + if (withOp) startOperation(cm);
1.2222 + cm.display.shift = false;
1.2223 +
1.2224 + // Find the part of the input that is actually new
1.2225 + var same = 0, l = Math.min(prevInput.length, text.length);
1.2226 + while (same < l && prevInput.charCodeAt(same) == text.charCodeAt(same)) ++same;
1.2227 + var inserted = text.slice(same), textLines = splitLines(inserted);
1.2228 +
1.2229 + // When pasing N lines into N selections, insert one line per selection
1.2230 + var multiPaste = cm.state.pasteIncoming && textLines.length > 1 && doc.sel.ranges.length == textLines.length;
1.2231 +
1.2232 + // Normal behavior is to insert the new text into every selection
1.2233 + for (var i = doc.sel.ranges.length - 1; i >= 0; i--) {
1.2234 + var range = doc.sel.ranges[i];
1.2235 + var from = range.from(), to = range.to();
1.2236 + // Handle deletion
1.2237 + if (same < prevInput.length)
1.2238 + from = Pos(from.line, from.ch - (prevInput.length - same));
1.2239 + // Handle overwrite
1.2240 + else if (cm.state.overwrite && range.empty() && !cm.state.pasteIncoming)
1.2241 + to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
1.2242 + var updateInput = cm.curOp.updateInput;
1.2243 + var changeEvent = {from: from, to: to, text: multiPaste ? [textLines[i]] : textLines,
1.2244 + origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
1.2245 + makeChange(cm.doc, changeEvent);
1.2246 + signalLater(cm, "inputRead", cm, changeEvent);
1.2247 + // When an 'electric' character is inserted, immediately trigger a reindent
1.2248 + if (inserted && !cm.state.pasteIncoming && cm.options.electricChars &&
1.2249 + cm.options.smartIndent && range.head.ch < 100 &&
1.2250 + (!i || doc.sel.ranges[i - 1].head.line != range.head.line)) {
1.2251 + var electric = cm.getModeAt(range.head).electricChars;
1.2252 + if (electric) for (var j = 0; j < electric.length; j++)
1.2253 + if (inserted.indexOf(electric.charAt(j)) > -1) {
1.2254 + indentLine(cm, range.head.line, "smart");
1.2255 + break;
1.2256 + }
1.2257 + }
1.2258 + }
1.2259 + ensureCursorVisible(cm);
1.2260 + cm.curOp.updateInput = updateInput;
1.2261 + cm.curOp.typing = true;
1.2262 +
1.2263 + // Don't leave long text in the textarea, since it makes further polling slow
1.2264 + if (text.length > 1000 || text.indexOf("\n") > -1) input.value = cm.display.prevInput = "";
1.2265 + else cm.display.prevInput = text;
1.2266 + if (withOp) endOperation(cm);
1.2267 + cm.state.pasteIncoming = cm.state.cutIncoming = false;
1.2268 + return true;
1.2269 + }
1.2270 +
1.2271 + // Reset the input to correspond to the selection (or to be empty,
1.2272 + // when not typing and nothing is selected)
1.2273 + function resetInput(cm, typing) {
1.2274 + var minimal, selected, doc = cm.doc;
1.2275 + if (cm.somethingSelected()) {
1.2276 + cm.display.prevInput = "";
1.2277 + var range = doc.sel.primary();
1.2278 + minimal = hasCopyEvent &&
1.2279 + (range.to().line - range.from().line > 100 || (selected = cm.getSelection()).length > 1000);
1.2280 + var content = minimal ? "-" : selected || cm.getSelection();
1.2281 + cm.display.input.value = content;
1.2282 + if (cm.state.focused) selectInput(cm.display.input);
1.2283 + if (ie && !ie_upto8) cm.display.inputHasSelection = content;
1.2284 + } else if (!typing) {
1.2285 + cm.display.prevInput = cm.display.input.value = "";
1.2286 + if (ie && !ie_upto8) cm.display.inputHasSelection = null;
1.2287 + }
1.2288 + cm.display.inaccurateSelection = minimal;
1.2289 + }
1.2290 +
1.2291 + function focusInput(cm) {
1.2292 + if (cm.options.readOnly != "nocursor" && (!mobile || activeElt() != cm.display.input))
1.2293 + cm.display.input.focus();
1.2294 + }
1.2295 +
1.2296 + function ensureFocus(cm) {
1.2297 + if (!cm.state.focused) { focusInput(cm); onFocus(cm); }
1.2298 + }
1.2299 +
1.2300 + function isReadOnly(cm) {
1.2301 + return cm.options.readOnly || cm.doc.cantEdit;
1.2302 + }
1.2303 +
1.2304 + // EVENT HANDLERS
1.2305 +
1.2306 + // Attach the necessary event handlers when initializing the editor
1.2307 + function registerEventHandlers(cm) {
1.2308 + var d = cm.display;
1.2309 + on(d.scroller, "mousedown", operation(cm, onMouseDown));
1.2310 + // Older IE's will not fire a second mousedown for a double click
1.2311 + if (ie_upto10)
1.2312 + on(d.scroller, "dblclick", operation(cm, function(e) {
1.2313 + if (signalDOMEvent(cm, e)) return;
1.2314 + var pos = posFromMouse(cm, e);
1.2315 + if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
1.2316 + e_preventDefault(e);
1.2317 + var word = findWordAt(cm.doc, pos);
1.2318 + extendSelection(cm.doc, word.anchor, word.head);
1.2319 + }));
1.2320 + else
1.2321 + on(d.scroller, "dblclick", function(e) { signalDOMEvent(cm, e) || e_preventDefault(e); });
1.2322 + // Prevent normal selection in the editor (we handle our own)
1.2323 + on(d.lineSpace, "selectstart", function(e) {
1.2324 + if (!eventInWidget(d, e)) e_preventDefault(e);
1.2325 + });
1.2326 + // Some browsers fire contextmenu *after* opening the menu, at
1.2327 + // which point we can't mess with it anymore. Context menu is
1.2328 + // handled in onMouseDown for these browsers.
1.2329 + if (!captureRightClick) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
1.2330 +
1.2331 + // Sync scrolling between fake scrollbars and real scrollable
1.2332 + // area, ensure viewport is updated when scrolling.
1.2333 + on(d.scroller, "scroll", function() {
1.2334 + if (d.scroller.clientHeight) {
1.2335 + setScrollTop(cm, d.scroller.scrollTop);
1.2336 + setScrollLeft(cm, d.scroller.scrollLeft, true);
1.2337 + signal(cm, "scroll", cm);
1.2338 + }
1.2339 + });
1.2340 + on(d.scrollbarV, "scroll", function() {
1.2341 + if (d.scroller.clientHeight) setScrollTop(cm, d.scrollbarV.scrollTop);
1.2342 + });
1.2343 + on(d.scrollbarH, "scroll", function() {
1.2344 + if (d.scroller.clientHeight) setScrollLeft(cm, d.scrollbarH.scrollLeft);
1.2345 + });
1.2346 +
1.2347 + // Listen to wheel events in order to try and update the viewport on time.
1.2348 + on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
1.2349 + on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
1.2350 +
1.2351 + // Prevent clicks in the scrollbars from killing focus
1.2352 + function reFocus() { if (cm.state.focused) setTimeout(bind(focusInput, cm), 0); }
1.2353 + on(d.scrollbarH, "mousedown", reFocus);
1.2354 + on(d.scrollbarV, "mousedown", reFocus);
1.2355 + // Prevent wrapper from ever scrolling
1.2356 + on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
1.2357 +
1.2358 + // When the window resizes, we need to refresh active editors.
1.2359 + var resizeTimer;
1.2360 + function onResize() {
1.2361 + if (resizeTimer == null) resizeTimer = setTimeout(function() {
1.2362 + resizeTimer = null;
1.2363 + // Might be a text scaling operation, clear size caches.
1.2364 + d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = knownScrollbarWidth = null;
1.2365 + cm.setSize();
1.2366 + }, 100);
1.2367 + }
1.2368 + on(window, "resize", onResize);
1.2369 + // The above handler holds on to the editor and its data
1.2370 + // structures. Here we poll to unregister it when the editor is no
1.2371 + // longer in the document, so that it can be garbage-collected.
1.2372 + function unregister() {
1.2373 + if (contains(document.body, d.wrapper)) setTimeout(unregister, 5000);
1.2374 + else off(window, "resize", onResize);
1.2375 + }
1.2376 + setTimeout(unregister, 5000);
1.2377 +
1.2378 + on(d.input, "keyup", operation(cm, onKeyUp));
1.2379 + on(d.input, "input", function() {
1.2380 + if (ie && !ie_upto8 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;
1.2381 + fastPoll(cm);
1.2382 + });
1.2383 + on(d.input, "keydown", operation(cm, onKeyDown));
1.2384 + on(d.input, "keypress", operation(cm, onKeyPress));
1.2385 + on(d.input, "focus", bind(onFocus, cm));
1.2386 + on(d.input, "blur", bind(onBlur, cm));
1.2387 +
1.2388 + function drag_(e) {
1.2389 + if (!signalDOMEvent(cm, e)) e_stop(e);
1.2390 + }
1.2391 + if (cm.options.dragDrop) {
1.2392 + on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
1.2393 + on(d.scroller, "dragenter", drag_);
1.2394 + on(d.scroller, "dragover", drag_);
1.2395 + on(d.scroller, "drop", operation(cm, onDrop));
1.2396 + }
1.2397 + on(d.scroller, "paste", function(e) {
1.2398 + if (eventInWidget(d, e)) return;
1.2399 + cm.state.pasteIncoming = true;
1.2400 + focusInput(cm);
1.2401 + fastPoll(cm);
1.2402 + });
1.2403 + on(d.input, "paste", function() {
1.2404 + cm.state.pasteIncoming = true;
1.2405 + fastPoll(cm);
1.2406 + });
1.2407 +
1.2408 + function prepareCopy(e) {
1.2409 + if (d.inaccurateSelection) {
1.2410 + d.prevInput = "";
1.2411 + d.inaccurateSelection = false;
1.2412 + d.input.value = cm.getSelection();
1.2413 + selectInput(d.input);
1.2414 + }
1.2415 + if (e.type == "cut") cm.state.cutIncoming = true;
1.2416 + }
1.2417 + on(d.input, "cut", prepareCopy);
1.2418 + on(d.input, "copy", prepareCopy);
1.2419 +
1.2420 + // Needed to handle Tab key in KHTML
1.2421 + if (khtml) on(d.sizer, "mouseup", function() {
1.2422 + if (activeElt() == d.input) d.input.blur();
1.2423 + focusInput(cm);
1.2424 + });
1.2425 + }
1.2426 +
1.2427 + // MOUSE EVENTS
1.2428 +
1.2429 + // Return true when the given mouse event happened in a widget
1.2430 + function eventInWidget(display, e) {
1.2431 + for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {
1.2432 + if (!n || n.ignoreEvents || n.parentNode == display.sizer && n != display.mover) return true;
1.2433 + }
1.2434 + }
1.2435 +
1.2436 + // Given a mouse event, find the corresponding position. If liberal
1.2437 + // is false, it checks whether a gutter or scrollbar was clicked,
1.2438 + // and returns null if it was. forRect is used by rectangular
1.2439 + // selections, and tries to estimate a character position even for
1.2440 + // coordinates beyond the right of the text.
1.2441 + function posFromMouse(cm, e, liberal, forRect) {
1.2442 + var display = cm.display;
1.2443 + if (!liberal) {
1.2444 + var target = e_target(e);
1.2445 + if (target == display.scrollbarH || target == display.scrollbarV ||
1.2446 + target == display.scrollbarFiller || target == display.gutterFiller) return null;
1.2447 + }
1.2448 + var x, y, space = display.lineSpace.getBoundingClientRect();
1.2449 + // Fails unpredictably on IE[67] when mouse is dragged around quickly.
1.2450 + try { x = e.clientX - space.left; y = e.clientY - space.top; }
1.2451 + catch (e) { return null; }
1.2452 + var coords = coordsChar(cm, x, y), line;
1.2453 + if (forRect && coords.xRel == 1 && (line = getLine(cm.doc, coords.line).text).length == coords.ch) {
1.2454 + var colDiff = countColumn(line, line.length, cm.options.tabSize) - line.length;
1.2455 + coords = Pos(coords.line, Math.round((x - paddingH(cm.display).left) / charWidth(cm.display)) - colDiff);
1.2456 + }
1.2457 + return coords;
1.2458 + }
1.2459 +
1.2460 + // A mouse down can be a single click, double click, triple click,
1.2461 + // start of selection drag, start of text drag, new cursor
1.2462 + // (ctrl-click), rectangle drag (alt-drag), or xwin
1.2463 + // middle-click-paste. Or it might be a click on something we should
1.2464 + // not interfere with, such as a scrollbar or widget.
1.2465 + function onMouseDown(e) {
1.2466 + if (signalDOMEvent(this, e)) return;
1.2467 + var cm = this, display = cm.display;
1.2468 + display.shift = e.shiftKey;
1.2469 +
1.2470 + if (eventInWidget(display, e)) {
1.2471 + if (!webkit) {
1.2472 + // Briefly turn off draggability, to allow widgets to do
1.2473 + // normal dragging things.
1.2474 + display.scroller.draggable = false;
1.2475 + setTimeout(function(){display.scroller.draggable = true;}, 100);
1.2476 + }
1.2477 + return;
1.2478 + }
1.2479 + if (clickInGutter(cm, e)) return;
1.2480 + var start = posFromMouse(cm, e);
1.2481 + window.focus();
1.2482 +
1.2483 + switch (e_button(e)) {
1.2484 + case 1:
1.2485 + if (start)
1.2486 + leftButtonDown(cm, e, start);
1.2487 + else if (e_target(e) == display.scroller)
1.2488 + e_preventDefault(e);
1.2489 + break;
1.2490 + case 2:
1.2491 + if (webkit) cm.state.lastMiddleDown = +new Date;
1.2492 + if (start) extendSelection(cm.doc, start);
1.2493 + setTimeout(bind(focusInput, cm), 20);
1.2494 + e_preventDefault(e);
1.2495 + break;
1.2496 + case 3:
1.2497 + if (captureRightClick) onContextMenu(cm, e);
1.2498 + break;
1.2499 + }
1.2500 + }
1.2501 +
1.2502 + var lastClick, lastDoubleClick;
1.2503 + function leftButtonDown(cm, e, start) {
1.2504 + setTimeout(bind(ensureFocus, cm), 0);
1.2505 +
1.2506 + var now = +new Date, type;
1.2507 + if (lastDoubleClick && lastDoubleClick.time > now - 400 && cmp(lastDoubleClick.pos, start) == 0) {
1.2508 + type = "triple";
1.2509 + } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
1.2510 + type = "double";
1.2511 + lastDoubleClick = {time: now, pos: start};
1.2512 + } else {
1.2513 + type = "single";
1.2514 + lastClick = {time: now, pos: start};
1.2515 + }
1.2516 +
1.2517 + var sel = cm.doc.sel, addNew = mac ? e.metaKey : e.ctrlKey;
1.2518 + if (cm.options.dragDrop && dragAndDrop && !addNew && !isReadOnly(cm) &&
1.2519 + type == "single" && sel.contains(start) > -1 && sel.somethingSelected())
1.2520 + leftButtonStartDrag(cm, e, start);
1.2521 + else
1.2522 + leftButtonSelect(cm, e, start, type, addNew);
1.2523 + }
1.2524 +
1.2525 + // Start a text drag. When it ends, see if any dragging actually
1.2526 + // happen, and treat as a click if it didn't.
1.2527 + function leftButtonStartDrag(cm, e, start) {
1.2528 + var display = cm.display;
1.2529 + var dragEnd = operation(cm, function(e2) {
1.2530 + if (webkit) display.scroller.draggable = false;
1.2531 + cm.state.draggingText = false;
1.2532 + off(document, "mouseup", dragEnd);
1.2533 + off(display.scroller, "drop", dragEnd);
1.2534 + if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
1.2535 + e_preventDefault(e2);
1.2536 + extendSelection(cm.doc, start);
1.2537 + focusInput(cm);
1.2538 + // Work around unexplainable focus problem in IE9 (#2127)
1.2539 + if (ie_upto10 && !ie_upto8)
1.2540 + setTimeout(function() {document.body.focus(); focusInput(cm);}, 20);
1.2541 + }
1.2542 + });
1.2543 + // Let the drag handler handle this.
1.2544 + if (webkit) display.scroller.draggable = true;
1.2545 + cm.state.draggingText = dragEnd;
1.2546 + // IE's approach to draggable
1.2547 + if (display.scroller.dragDrop) display.scroller.dragDrop();
1.2548 + on(document, "mouseup", dragEnd);
1.2549 + on(display.scroller, "drop", dragEnd);
1.2550 + }
1.2551 +
1.2552 + // Normal selection, as opposed to text dragging.
1.2553 + function leftButtonSelect(cm, e, start, type, addNew) {
1.2554 + var display = cm.display, doc = cm.doc;
1.2555 + e_preventDefault(e);
1.2556 +
1.2557 + var ourRange, ourIndex, startSel = doc.sel;
1.2558 + if (addNew) {
1.2559 + ourIndex = doc.sel.contains(start);
1.2560 + if (ourIndex > -1)
1.2561 + ourRange = doc.sel.ranges[ourIndex];
1.2562 + else
1.2563 + ourRange = new Range(start, start);
1.2564 + } else {
1.2565 + ourRange = doc.sel.primary();
1.2566 + }
1.2567 +
1.2568 + if (e.altKey) {
1.2569 + type = "rect";
1.2570 + if (!addNew) ourRange = new Range(start, start);
1.2571 + start = posFromMouse(cm, e, true, true);
1.2572 + ourIndex = -1;
1.2573 + } else if (type == "double") {
1.2574 + var word = findWordAt(doc, start);
1.2575 + if (cm.display.shift || doc.extend)
1.2576 + ourRange = extendRange(doc, ourRange, word.anchor, word.head);
1.2577 + else
1.2578 + ourRange = word;
1.2579 + } else if (type == "triple") {
1.2580 + var line = new Range(Pos(start.line, 0), clipPos(doc, Pos(start.line + 1, 0)));
1.2581 + if (cm.display.shift || doc.extend)
1.2582 + ourRange = extendRange(doc, ourRange, line.anchor, line.head);
1.2583 + else
1.2584 + ourRange = line;
1.2585 + } else {
1.2586 + ourRange = extendRange(doc, ourRange, start);
1.2587 + }
1.2588 +
1.2589 + if (!addNew) {
1.2590 + ourIndex = 0;
1.2591 + setSelection(doc, new Selection([ourRange], 0), sel_mouse);
1.2592 + } else if (ourIndex > -1) {
1.2593 + replaceOneSelection(doc, ourIndex, ourRange, sel_mouse);
1.2594 + } else {
1.2595 + ourIndex = doc.sel.ranges.length;
1.2596 + setSelection(doc, normalizeSelection(doc.sel.ranges.concat([ourRange]), ourIndex),
1.2597 + {scroll: false, origin: "*mouse"});
1.2598 + }
1.2599 +
1.2600 + var lastPos = start;
1.2601 + function extendTo(pos) {
1.2602 + if (cmp(lastPos, pos) == 0) return;
1.2603 + lastPos = pos;
1.2604 +
1.2605 + if (type == "rect") {
1.2606 + var ranges = [], tabSize = cm.options.tabSize;
1.2607 + var startCol = countColumn(getLine(doc, start.line).text, start.ch, tabSize);
1.2608 + var posCol = countColumn(getLine(doc, pos.line).text, pos.ch, tabSize);
1.2609 + var left = Math.min(startCol, posCol), right = Math.max(startCol, posCol);
1.2610 + for (var line = Math.min(start.line, pos.line), end = Math.min(cm.lastLine(), Math.max(start.line, pos.line));
1.2611 + line <= end; line++) {
1.2612 + var text = getLine(doc, line).text, leftPos = findColumn(text, left, tabSize);
1.2613 + if (left == right)
1.2614 + ranges.push(new Range(Pos(line, leftPos), Pos(line, leftPos)));
1.2615 + else if (text.length > leftPos)
1.2616 + ranges.push(new Range(Pos(line, leftPos), Pos(line, findColumn(text, right, tabSize))));
1.2617 + }
1.2618 + if (!ranges.length) ranges.push(new Range(start, start));
1.2619 + setSelection(doc, normalizeSelection(startSel.ranges.slice(0, ourIndex).concat(ranges), ourIndex), sel_mouse);
1.2620 + } else {
1.2621 + var oldRange = ourRange;
1.2622 + var anchor = oldRange.anchor, head = pos;
1.2623 + if (type != "single") {
1.2624 + if (type == "double")
1.2625 + var range = findWordAt(doc, pos);
1.2626 + else
1.2627 + var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
1.2628 + if (cmp(range.anchor, anchor) > 0) {
1.2629 + head = range.head;
1.2630 + anchor = minPos(oldRange.from(), range.anchor);
1.2631 + } else {
1.2632 + head = range.anchor;
1.2633 + anchor = maxPos(oldRange.to(), range.head);
1.2634 + }
1.2635 + }
1.2636 + var ranges = startSel.ranges.slice(0);
1.2637 + ranges[ourIndex] = new Range(clipPos(doc, anchor), head);
1.2638 + setSelection(doc, normalizeSelection(ranges, ourIndex), sel_mouse);
1.2639 + }
1.2640 + }
1.2641 +
1.2642 + var editorSize = display.wrapper.getBoundingClientRect();
1.2643 + // Used to ensure timeout re-tries don't fire when another extend
1.2644 + // happened in the meantime (clearTimeout isn't reliable -- at
1.2645 + // least on Chrome, the timeouts still happen even when cleared,
1.2646 + // if the clear happens after their scheduled firing time).
1.2647 + var counter = 0;
1.2648 +
1.2649 + function extend(e) {
1.2650 + var curCount = ++counter;
1.2651 + var cur = posFromMouse(cm, e, true, type == "rect");
1.2652 + if (!cur) return;
1.2653 + if (cmp(cur, lastPos) != 0) {
1.2654 + ensureFocus(cm);
1.2655 + extendTo(cur);
1.2656 + var visible = visibleLines(display, doc);
1.2657 + if (cur.line >= visible.to || cur.line < visible.from)
1.2658 + setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
1.2659 + } else {
1.2660 + var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
1.2661 + if (outside) setTimeout(operation(cm, function() {
1.2662 + if (counter != curCount) return;
1.2663 + display.scroller.scrollTop += outside;
1.2664 + extend(e);
1.2665 + }), 50);
1.2666 + }
1.2667 + }
1.2668 +
1.2669 + function done(e) {
1.2670 + counter = Infinity;
1.2671 + e_preventDefault(e);
1.2672 + focusInput(cm);
1.2673 + off(document, "mousemove", move);
1.2674 + off(document, "mouseup", up);
1.2675 + doc.history.lastSelOrigin = null;
1.2676 + }
1.2677 +
1.2678 + var move = operation(cm, function(e) {
1.2679 + if ((ie && !ie_upto9) ? !e.buttons : !e_button(e)) done(e);
1.2680 + else extend(e);
1.2681 + });
1.2682 + var up = operation(cm, done);
1.2683 + on(document, "mousemove", move);
1.2684 + on(document, "mouseup", up);
1.2685 + }
1.2686 +
1.2687 + // Determines whether an event happened in the gutter, and fires the
1.2688 + // handlers for the corresponding event.
1.2689 + function gutterEvent(cm, e, type, prevent, signalfn) {
1.2690 + try { var mX = e.clientX, mY = e.clientY; }
1.2691 + catch(e) { return false; }
1.2692 + if (mX >= Math.floor(cm.display.gutters.getBoundingClientRect().right)) return false;
1.2693 + if (prevent) e_preventDefault(e);
1.2694 +
1.2695 + var display = cm.display;
1.2696 + var lineBox = display.lineDiv.getBoundingClientRect();
1.2697 +
1.2698 + if (mY > lineBox.bottom || !hasHandler(cm, type)) return e_defaultPrevented(e);
1.2699 + mY -= lineBox.top - display.viewOffset;
1.2700 +
1.2701 + for (var i = 0; i < cm.options.gutters.length; ++i) {
1.2702 + var g = display.gutters.childNodes[i];
1.2703 + if (g && g.getBoundingClientRect().right >= mX) {
1.2704 + var line = lineAtHeight(cm.doc, mY);
1.2705 + var gutter = cm.options.gutters[i];
1.2706 + signalfn(cm, type, cm, line, gutter, e);
1.2707 + return e_defaultPrevented(e);
1.2708 + }
1.2709 + }
1.2710 + }
1.2711 +
1.2712 + function clickInGutter(cm, e) {
1.2713 + return gutterEvent(cm, e, "gutterClick", true, signalLater);
1.2714 + }
1.2715 +
1.2716 + // Kludge to work around strange IE behavior where it'll sometimes
1.2717 + // re-fire a series of drag-related events right after the drop (#1551)
1.2718 + var lastDrop = 0;
1.2719 +
1.2720 + function onDrop(e) {
1.2721 + var cm = this;
1.2722 + if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e))
1.2723 + return;
1.2724 + e_preventDefault(e);
1.2725 + if (ie_upto10) lastDrop = +new Date;
1.2726 + var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
1.2727 + if (!pos || isReadOnly(cm)) return;
1.2728 + // Might be a file drop, in which case we simply extract the text
1.2729 + // and insert it.
1.2730 + if (files && files.length && window.FileReader && window.File) {
1.2731 + var n = files.length, text = Array(n), read = 0;
1.2732 + var loadFile = function(file, i) {
1.2733 + var reader = new FileReader;
1.2734 + reader.onload = function() {
1.2735 + text[i] = reader.result;
1.2736 + if (++read == n) {
1.2737 + pos = clipPos(cm.doc, pos);
1.2738 + var change = {from: pos, to: pos, text: splitLines(text.join("\n")), origin: "paste"};
1.2739 + makeChange(cm.doc, change);
1.2740 + setSelectionReplaceHistory(cm.doc, simpleSelection(pos, changeEnd(change)));
1.2741 + }
1.2742 + };
1.2743 + reader.readAsText(file);
1.2744 + };
1.2745 + for (var i = 0; i < n; ++i) loadFile(files[i], i);
1.2746 + } else { // Normal drop
1.2747 + // Don't do a replace if the drop happened inside of the selected text.
1.2748 + if (cm.state.draggingText && cm.doc.sel.contains(pos) > -1) {
1.2749 + cm.state.draggingText(e);
1.2750 + // Ensure the editor is re-focused
1.2751 + setTimeout(bind(focusInput, cm), 20);
1.2752 + return;
1.2753 + }
1.2754 + try {
1.2755 + var text = e.dataTransfer.getData("Text");
1.2756 + if (text) {
1.2757 + var selected = cm.state.draggingText && cm.listSelections();
1.2758 + setSelectionNoUndo(cm.doc, simpleSelection(pos, pos));
1.2759 + if (selected) for (var i = 0; i < selected.length; ++i)
1.2760 + replaceRange(cm.doc, "", selected[i].anchor, selected[i].head, "drag");
1.2761 + cm.replaceSelection(text, "around", "paste");
1.2762 + focusInput(cm);
1.2763 + }
1.2764 + }
1.2765 + catch(e){}
1.2766 + }
1.2767 + }
1.2768 +
1.2769 + function onDragStart(cm, e) {
1.2770 + if (ie_upto10 && (!cm.state.draggingText || +new Date - lastDrop < 100)) { e_stop(e); return; }
1.2771 + if (signalDOMEvent(cm, e) || eventInWidget(cm.display, e)) return;
1.2772 +
1.2773 + e.dataTransfer.setData("Text", cm.getSelection());
1.2774 +
1.2775 + // Use dummy image instead of default browsers image.
1.2776 + // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
1.2777 + if (e.dataTransfer.setDragImage && !safari) {
1.2778 + var img = elt("img", null, null, "position: fixed; left: 0; top: 0;");
1.2779 + img.src = "data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEKAAEALAAAAAABAAEAAAICTAEAOw==";
1.2780 + if (presto) {
1.2781 + img.width = img.height = 1;
1.2782 + cm.display.wrapper.appendChild(img);
1.2783 + // Force a relayout, or Opera won't use our image for some obscure reason
1.2784 + img._top = img.offsetTop;
1.2785 + }
1.2786 + e.dataTransfer.setDragImage(img, 0, 0);
1.2787 + if (presto) img.parentNode.removeChild(img);
1.2788 + }
1.2789 + }
1.2790 +
1.2791 + // SCROLL EVENTS
1.2792 +
1.2793 + // Sync the scrollable area and scrollbars, ensure the viewport
1.2794 + // covers the visible area.
1.2795 + function setScrollTop(cm, val) {
1.2796 + if (Math.abs(cm.doc.scrollTop - val) < 2) return;
1.2797 + cm.doc.scrollTop = val;
1.2798 + if (!gecko) updateDisplay(cm, {top: val});
1.2799 + if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
1.2800 + if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
1.2801 + if (gecko) updateDisplay(cm);
1.2802 + startWorker(cm, 100);
1.2803 + }
1.2804 + // Sync scroller and scrollbar, ensure the gutter elements are
1.2805 + // aligned.
1.2806 + function setScrollLeft(cm, val, isScroller) {
1.2807 + if (isScroller ? val == cm.doc.scrollLeft : Math.abs(cm.doc.scrollLeft - val) < 2) return;
1.2808 + val = Math.min(val, cm.display.scroller.scrollWidth - cm.display.scroller.clientWidth);
1.2809 + cm.doc.scrollLeft = val;
1.2810 + alignHorizontally(cm);
1.2811 + if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
1.2812 + if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
1.2813 + }
1.2814 +
1.2815 + // Since the delta values reported on mouse wheel events are
1.2816 + // unstandardized between browsers and even browser versions, and
1.2817 + // generally horribly unpredictable, this code starts by measuring
1.2818 + // the scroll effect that the first few mouse wheel events have,
1.2819 + // and, from that, detects the way it can convert deltas to pixel
1.2820 + // offsets afterwards.
1.2821 + //
1.2822 + // The reason we want to know the amount a wheel event will scroll
1.2823 + // is that it gives us a chance to update the display before the
1.2824 + // actual scrolling happens, reducing flickering.
1.2825 +
1.2826 + var wheelSamples = 0, wheelPixelsPerUnit = null;
1.2827 + // Fill in a browser-detected starting value on browsers where we
1.2828 + // know one. These don't have to be accurate -- the result of them
1.2829 + // being wrong would just be a slight flicker on the first wheel
1.2830 + // scroll (if it is large enough).
1.2831 + if (ie) wheelPixelsPerUnit = -.53;
1.2832 + else if (gecko) wheelPixelsPerUnit = 15;
1.2833 + else if (chrome) wheelPixelsPerUnit = -.7;
1.2834 + else if (safari) wheelPixelsPerUnit = -1/3;
1.2835 +
1.2836 + function onScrollWheel(cm, e) {
1.2837 + var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
1.2838 + if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
1.2839 + if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
1.2840 + else if (dy == null) dy = e.wheelDelta;
1.2841 +
1.2842 + var display = cm.display, scroll = display.scroller;
1.2843 + // Quit if there's nothing to scroll here
1.2844 + if (!(dx && scroll.scrollWidth > scroll.clientWidth ||
1.2845 + dy && scroll.scrollHeight > scroll.clientHeight)) return;
1.2846 +
1.2847 + // Webkit browsers on OS X abort momentum scrolls when the target
1.2848 + // of the scroll event is removed from the scrollable element.
1.2849 + // This hack (see related code in patchDisplay) makes sure the
1.2850 + // element is kept around.
1.2851 + if (dy && mac && webkit) {
1.2852 + outer: for (var cur = e.target, view = display.view; cur != scroll; cur = cur.parentNode) {
1.2853 + for (var i = 0; i < view.length; i++) {
1.2854 + if (view[i].node == cur) {
1.2855 + cm.display.currentWheelTarget = cur;
1.2856 + break outer;
1.2857 + }
1.2858 + }
1.2859 + }
1.2860 + }
1.2861 +
1.2862 + // On some browsers, horizontal scrolling will cause redraws to
1.2863 + // happen before the gutter has been realigned, causing it to
1.2864 + // wriggle around in a most unseemly way. When we have an
1.2865 + // estimated pixels/delta value, we just handle horizontal
1.2866 + // scrolling entirely here. It'll be slightly off from native, but
1.2867 + // better than glitching out.
1.2868 + if (dx && !gecko && !presto && wheelPixelsPerUnit != null) {
1.2869 + if (dy)
1.2870 + setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
1.2871 + setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
1.2872 + e_preventDefault(e);
1.2873 + display.wheelStartX = null; // Abort measurement, if in progress
1.2874 + return;
1.2875 + }
1.2876 +
1.2877 + // 'Project' the visible viewport to cover the area that is being
1.2878 + // scrolled into view (if we know enough to estimate it).
1.2879 + if (dy && wheelPixelsPerUnit != null) {
1.2880 + var pixels = dy * wheelPixelsPerUnit;
1.2881 + var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
1.2882 + if (pixels < 0) top = Math.max(0, top + pixels - 50);
1.2883 + else bot = Math.min(cm.doc.height, bot + pixels + 50);
1.2884 + updateDisplay(cm, {top: top, bottom: bot});
1.2885 + }
1.2886 +
1.2887 + if (wheelSamples < 20) {
1.2888 + if (display.wheelStartX == null) {
1.2889 + display.wheelStartX = scroll.scrollLeft; display.wheelStartY = scroll.scrollTop;
1.2890 + display.wheelDX = dx; display.wheelDY = dy;
1.2891 + setTimeout(function() {
1.2892 + if (display.wheelStartX == null) return;
1.2893 + var movedX = scroll.scrollLeft - display.wheelStartX;
1.2894 + var movedY = scroll.scrollTop - display.wheelStartY;
1.2895 + var sample = (movedY && display.wheelDY && movedY / display.wheelDY) ||
1.2896 + (movedX && display.wheelDX && movedX / display.wheelDX);
1.2897 + display.wheelStartX = display.wheelStartY = null;
1.2898 + if (!sample) return;
1.2899 + wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
1.2900 + ++wheelSamples;
1.2901 + }, 200);
1.2902 + } else {
1.2903 + display.wheelDX += dx; display.wheelDY += dy;
1.2904 + }
1.2905 + }
1.2906 + }
1.2907 +
1.2908 + // KEY EVENTS
1.2909 +
1.2910 + // Run a handler that was bound to a key.
1.2911 + function doHandleBinding(cm, bound, dropShift) {
1.2912 + if (typeof bound == "string") {
1.2913 + bound = commands[bound];
1.2914 + if (!bound) return false;
1.2915 + }
1.2916 + // Ensure previous input has been read, so that the handler sees a
1.2917 + // consistent view of the document
1.2918 + if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
1.2919 + var prevShift = cm.display.shift, done = false;
1.2920 + try {
1.2921 + if (isReadOnly(cm)) cm.state.suppressEdits = true;
1.2922 + if (dropShift) cm.display.shift = false;
1.2923 + done = bound(cm) != Pass;
1.2924 + } finally {
1.2925 + cm.display.shift = prevShift;
1.2926 + cm.state.suppressEdits = false;
1.2927 + }
1.2928 + return done;
1.2929 + }
1.2930 +
1.2931 + // Collect the currently active keymaps.
1.2932 + function allKeyMaps(cm) {
1.2933 + var maps = cm.state.keyMaps.slice(0);
1.2934 + if (cm.options.extraKeys) maps.push(cm.options.extraKeys);
1.2935 + maps.push(cm.options.keyMap);
1.2936 + return maps;
1.2937 + }
1.2938 +
1.2939 + var maybeTransition;
1.2940 + // Handle a key from the keydown event.
1.2941 + function handleKeyBinding(cm, e) {
1.2942 + // Handle automatic keymap transitions
1.2943 + var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
1.2944 + clearTimeout(maybeTransition);
1.2945 + if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
1.2946 + if (getKeyMap(cm.options.keyMap) == startMap) {
1.2947 + cm.options.keyMap = (next.call ? next.call(null, cm) : next);
1.2948 + keyMapChanged(cm);
1.2949 + }
1.2950 + }, 50);
1.2951 +
1.2952 + var name = keyName(e, true), handled = false;
1.2953 + if (!name) return false;
1.2954 + var keymaps = allKeyMaps(cm);
1.2955 +
1.2956 + if (e.shiftKey) {
1.2957 + // First try to resolve full name (including 'Shift-'). Failing
1.2958 + // that, see if there is a cursor-motion command (starting with
1.2959 + // 'go') bound to the keyname without 'Shift-'.
1.2960 + handled = lookupKey("Shift-" + name, keymaps, function(b) {return doHandleBinding(cm, b, true);})
1.2961 + || lookupKey(name, keymaps, function(b) {
1.2962 + if (typeof b == "string" ? /^go[A-Z]/.test(b) : b.motion)
1.2963 + return doHandleBinding(cm, b);
1.2964 + });
1.2965 + } else {
1.2966 + handled = lookupKey(name, keymaps, function(b) { return doHandleBinding(cm, b); });
1.2967 + }
1.2968 +
1.2969 + if (handled) {
1.2970 + e_preventDefault(e);
1.2971 + restartBlink(cm);
1.2972 + signalLater(cm, "keyHandled", cm, name, e);
1.2973 + }
1.2974 + return handled;
1.2975 + }
1.2976 +
1.2977 + // Handle a key from the keypress event
1.2978 + function handleCharBinding(cm, e, ch) {
1.2979 + var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
1.2980 + function(b) { return doHandleBinding(cm, b, true); });
1.2981 + if (handled) {
1.2982 + e_preventDefault(e);
1.2983 + restartBlink(cm);
1.2984 + signalLater(cm, "keyHandled", cm, "'" + ch + "'", e);
1.2985 + }
1.2986 + return handled;
1.2987 + }
1.2988 +
1.2989 + var lastStoppedKey = null;
1.2990 + function onKeyDown(e) {
1.2991 + var cm = this;
1.2992 + ensureFocus(cm);
1.2993 + if (signalDOMEvent(cm, e)) return;
1.2994 + // IE does strange things with escape.
1.2995 + if (ie_upto10 && e.keyCode == 27) e.returnValue = false;
1.2996 + var code = e.keyCode;
1.2997 + cm.display.shift = code == 16 || e.shiftKey;
1.2998 + var handled = handleKeyBinding(cm, e);
1.2999 + if (presto) {
1.3000 + lastStoppedKey = handled ? code : null;
1.3001 + // Opera has no cut event... we try to at least catch the key combo
1.3002 + if (!handled && code == 88 && !hasCopyEvent && (mac ? e.metaKey : e.ctrlKey))
1.3003 + cm.replaceSelection("", null, "cut");
1.3004 + }
1.3005 + }
1.3006 +
1.3007 + function onKeyUp(e) {
1.3008 + if (signalDOMEvent(this, e)) return;
1.3009 + if (e.keyCode == 16) this.doc.sel.shift = false;
1.3010 + }
1.3011 +
1.3012 + function onKeyPress(e) {
1.3013 + var cm = this;
1.3014 + if (signalDOMEvent(cm, e)) return;
1.3015 + var keyCode = e.keyCode, charCode = e.charCode;
1.3016 + if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
1.3017 + if (((presto && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
1.3018 + var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
1.3019 + if (handleCharBinding(cm, e, ch)) return;
1.3020 + if (ie && !ie_upto8) cm.display.inputHasSelection = null;
1.3021 + fastPoll(cm);
1.3022 + }
1.3023 +
1.3024 + // FOCUS/BLUR EVENTS
1.3025 +
1.3026 + function onFocus(cm) {
1.3027 + if (cm.options.readOnly == "nocursor") return;
1.3028 + if (!cm.state.focused) {
1.3029 + signal(cm, "focus", cm);
1.3030 + cm.state.focused = true;
1.3031 + if (cm.display.wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
1.3032 + cm.display.wrapper.className += " CodeMirror-focused";
1.3033 + if (!cm.curOp) {
1.3034 + resetInput(cm);
1.3035 + if (webkit) setTimeout(bind(resetInput, cm, true), 0); // Issue #1730
1.3036 + }
1.3037 + }
1.3038 + slowPoll(cm);
1.3039 + restartBlink(cm);
1.3040 + }
1.3041 + function onBlur(cm) {
1.3042 + if (cm.state.focused) {
1.3043 + signal(cm, "blur", cm);
1.3044 + cm.state.focused = false;
1.3045 + cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-focused", "");
1.3046 + }
1.3047 + clearInterval(cm.display.blinker);
1.3048 + setTimeout(function() {if (!cm.state.focused) cm.display.shift = false;}, 150);
1.3049 + }
1.3050 +
1.3051 + // CONTEXT MENU HANDLING
1.3052 +
1.3053 + var detectingSelectAll;
1.3054 + // To make the context menu work, we need to briefly unhide the
1.3055 + // textarea (making it as unobtrusive as possible) to let the
1.3056 + // right-click take effect on it.
1.3057 + function onContextMenu(cm, e) {
1.3058 + if (signalDOMEvent(cm, e, "contextmenu")) return;
1.3059 + var display = cm.display;
1.3060 + if (eventInWidget(display, e) || contextMenuInGutter(cm, e)) return;
1.3061 +
1.3062 + var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
1.3063 + if (!pos || presto) return; // Opera is difficult.
1.3064 +
1.3065 + // Reset the current text selection only if the click is done outside of the selection
1.3066 + // and 'resetSelectionOnContextMenu' option is true.
1.3067 + var reset = cm.options.resetSelectionOnContextMenu;
1.3068 + if (reset && cm.doc.sel.contains(pos) == -1)
1.3069 + operation(cm, setSelection)(cm.doc, simpleSelection(pos), sel_dontScroll);
1.3070 +
1.3071 + var oldCSS = display.input.style.cssText;
1.3072 + display.inputDiv.style.position = "absolute";
1.3073 + display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
1.3074 + "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
1.3075 + (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
1.3076 + "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
1.3077 + focusInput(cm);
1.3078 + resetInput(cm);
1.3079 + // Adds "Select all" to context menu in FF
1.3080 + if (!cm.somethingSelected()) display.input.value = display.prevInput = " ";
1.3081 +
1.3082 + // Select-all will be greyed out if there's nothing to select, so
1.3083 + // this adds a zero-width space so that we can later check whether
1.3084 + // it got selected.
1.3085 + function prepareSelectAllHack() {
1.3086 + if (display.input.selectionStart != null) {
1.3087 + var extval = display.input.value = "\u200b" + (cm.somethingSelected() ? display.input.value : "");
1.3088 + display.prevInput = "\u200b";
1.3089 + display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
1.3090 + }
1.3091 + }
1.3092 + function rehide() {
1.3093 + display.inputDiv.style.position = "relative";
1.3094 + display.input.style.cssText = oldCSS;
1.3095 + if (ie_upto8) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
1.3096 + slowPoll(cm);
1.3097 +
1.3098 + // Try to detect the user choosing select-all
1.3099 + if (display.input.selectionStart != null) {
1.3100 + if (!ie || ie_upto8) prepareSelectAllHack();
1.3101 + clearTimeout(detectingSelectAll);
1.3102 + var i = 0, poll = function(){
1.3103 + if (display.prevInput == "\u200b" && display.input.selectionStart == 0)
1.3104 + operation(cm, commands.selectAll)(cm);
1.3105 + else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
1.3106 + else resetInput(cm);
1.3107 + };
1.3108 + detectingSelectAll = setTimeout(poll, 200);
1.3109 + }
1.3110 + }
1.3111 +
1.3112 + if (ie && !ie_upto8) prepareSelectAllHack();
1.3113 + if (captureRightClick) {
1.3114 + e_stop(e);
1.3115 + var mouseup = function() {
1.3116 + off(window, "mouseup", mouseup);
1.3117 + setTimeout(rehide, 20);
1.3118 + };
1.3119 + on(window, "mouseup", mouseup);
1.3120 + } else {
1.3121 + setTimeout(rehide, 50);
1.3122 + }
1.3123 + }
1.3124 +
1.3125 + function contextMenuInGutter(cm, e) {
1.3126 + if (!hasHandler(cm, "gutterContextMenu")) return false;
1.3127 + return gutterEvent(cm, e, "gutterContextMenu", false, signal);
1.3128 + }
1.3129 +
1.3130 + // UPDATING
1.3131 +
1.3132 + // Compute the position of the end of a change (its 'to' property
1.3133 + // refers to the pre-change end).
1.3134 + var changeEnd = CodeMirror.changeEnd = function(change) {
1.3135 + if (!change.text) return change.to;
1.3136 + return Pos(change.from.line + change.text.length - 1,
1.3137 + lst(change.text).length + (change.text.length == 1 ? change.from.ch : 0));
1.3138 + };
1.3139 +
1.3140 + // Adjust a position to refer to the post-change position of the
1.3141 + // same text, or the end of the change if the change covers it.
1.3142 + function adjustForChange(pos, change) {
1.3143 + if (cmp(pos, change.from) < 0) return pos;
1.3144 + if (cmp(pos, change.to) <= 0) return changeEnd(change);
1.3145 +
1.3146 + var line = pos.line + change.text.length - (change.to.line - change.from.line) - 1, ch = pos.ch;
1.3147 + if (pos.line == change.to.line) ch += changeEnd(change).ch - change.to.ch;
1.3148 + return Pos(line, ch);
1.3149 + }
1.3150 +
1.3151 + function computeSelAfterChange(doc, change) {
1.3152 + var out = [];
1.3153 + for (var i = 0; i < doc.sel.ranges.length; i++) {
1.3154 + var range = doc.sel.ranges[i];
1.3155 + out.push(new Range(adjustForChange(range.anchor, change),
1.3156 + adjustForChange(range.head, change)));
1.3157 + }
1.3158 + return normalizeSelection(out, doc.sel.primIndex);
1.3159 + }
1.3160 +
1.3161 + function offsetPos(pos, old, nw) {
1.3162 + if (pos.line == old.line)
1.3163 + return Pos(nw.line, pos.ch - old.ch + nw.ch);
1.3164 + else
1.3165 + return Pos(nw.line + (pos.line - old.line), pos.ch);
1.3166 + }
1.3167 +
1.3168 + // Used by replaceSelections to allow moving the selection to the
1.3169 + // start or around the replaced test. Hint may be "start" or "around".
1.3170 + function computeReplacedSel(doc, changes, hint) {
1.3171 + var out = [];
1.3172 + var oldPrev = Pos(doc.first, 0), newPrev = oldPrev;
1.3173 + for (var i = 0; i < changes.length; i++) {
1.3174 + var change = changes[i];
1.3175 + var from = offsetPos(change.from, oldPrev, newPrev);
1.3176 + var to = offsetPos(changeEnd(change), oldPrev, newPrev);
1.3177 + oldPrev = change.to;
1.3178 + newPrev = to;
1.3179 + if (hint == "around") {
1.3180 + var range = doc.sel.ranges[i], inv = cmp(range.head, range.anchor) < 0;
1.3181 + out[i] = new Range(inv ? to : from, inv ? from : to);
1.3182 + } else {
1.3183 + out[i] = new Range(from, from);
1.3184 + }
1.3185 + }
1.3186 + return new Selection(out, doc.sel.primIndex);
1.3187 + }
1.3188 +
1.3189 + // Allow "beforeChange" event handlers to influence a change
1.3190 + function filterChange(doc, change, update) {
1.3191 + var obj = {
1.3192 + canceled: false,
1.3193 + from: change.from,
1.3194 + to: change.to,
1.3195 + text: change.text,
1.3196 + origin: change.origin,
1.3197 + cancel: function() { this.canceled = true; }
1.3198 + };
1.3199 + if (update) obj.update = function(from, to, text, origin) {
1.3200 + if (from) this.from = clipPos(doc, from);
1.3201 + if (to) this.to = clipPos(doc, to);
1.3202 + if (text) this.text = text;
1.3203 + if (origin !== undefined) this.origin = origin;
1.3204 + };
1.3205 + signal(doc, "beforeChange", doc, obj);
1.3206 + if (doc.cm) signal(doc.cm, "beforeChange", doc.cm, obj);
1.3207 +
1.3208 + if (obj.canceled) return null;
1.3209 + return {from: obj.from, to: obj.to, text: obj.text, origin: obj.origin};
1.3210 + }
1.3211 +
1.3212 + // Apply a change to a document, and add it to the document's
1.3213 + // history, and propagating it to all linked documents.
1.3214 + function makeChange(doc, change, ignoreReadOnly) {
1.3215 + if (doc.cm) {
1.3216 + if (!doc.cm.curOp) return operation(doc.cm, makeChange)(doc, change, ignoreReadOnly);
1.3217 + if (doc.cm.state.suppressEdits) return;
1.3218 + }
1.3219 +
1.3220 + if (hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange")) {
1.3221 + change = filterChange(doc, change, true);
1.3222 + if (!change) return;
1.3223 + }
1.3224 +
1.3225 + // Possibly split or suppress the update based on the presence
1.3226 + // of read-only spans in its range.
1.3227 + var split = sawReadOnlySpans && !ignoreReadOnly && removeReadOnlyRanges(doc, change.from, change.to);
1.3228 + if (split) {
1.3229 + for (var i = split.length - 1; i >= 0; --i)
1.3230 + makeChangeInner(doc, {from: split[i].from, to: split[i].to, text: i ? [""] : change.text});
1.3231 + } else {
1.3232 + makeChangeInner(doc, change);
1.3233 + }
1.3234 + }
1.3235 +
1.3236 + function makeChangeInner(doc, change) {
1.3237 + if (change.text.length == 1 && change.text[0] == "" && cmp(change.from, change.to) == 0) return;
1.3238 + var selAfter = computeSelAfterChange(doc, change);
1.3239 + addChangeToHistory(doc, change, selAfter, doc.cm ? doc.cm.curOp.id : NaN);
1.3240 +
1.3241 + makeChangeSingleDoc(doc, change, selAfter, stretchSpansOverChange(doc, change));
1.3242 + var rebased = [];
1.3243 +
1.3244 + linkedDocs(doc, function(doc, sharedHist) {
1.3245 + if (!sharedHist && indexOf(rebased, doc.history) == -1) {
1.3246 + rebaseHist(doc.history, change);
1.3247 + rebased.push(doc.history);
1.3248 + }
1.3249 + makeChangeSingleDoc(doc, change, null, stretchSpansOverChange(doc, change));
1.3250 + });
1.3251 + }
1.3252 +
1.3253 + // Revert a change stored in a document's history.
1.3254 + function makeChangeFromHistory(doc, type, allowSelectionOnly) {
1.3255 + if (doc.cm && doc.cm.state.suppressEdits) return;
1.3256 +
1.3257 + var hist = doc.history, event, selAfter = doc.sel;
1.3258 + var source = type == "undo" ? hist.done : hist.undone, dest = type == "undo" ? hist.undone : hist.done;
1.3259 +
1.3260 + // Verify that there is a useable event (so that ctrl-z won't
1.3261 + // needlessly clear selection events)
1.3262 + for (var i = 0; i < source.length; i++) {
1.3263 + event = source[i];
1.3264 + if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
1.3265 + break;
1.3266 + }
1.3267 + if (i == source.length) return;
1.3268 + hist.lastOrigin = hist.lastSelOrigin = null;
1.3269 +
1.3270 + for (;;) {
1.3271 + event = source.pop();
1.3272 + if (event.ranges) {
1.3273 + pushSelectionToHistory(event, dest);
1.3274 + if (allowSelectionOnly && !event.equals(doc.sel)) {
1.3275 + setSelection(doc, event, {clearRedo: false});
1.3276 + return;
1.3277 + }
1.3278 + selAfter = event;
1.3279 + }
1.3280 + else break;
1.3281 + }
1.3282 +
1.3283 + // Build up a reverse change object to add to the opposite history
1.3284 + // stack (redo when undoing, and vice versa).
1.3285 + var antiChanges = [];
1.3286 + pushSelectionToHistory(selAfter, dest);
1.3287 + dest.push({changes: antiChanges, generation: hist.generation});
1.3288 + hist.generation = event.generation || ++hist.maxGeneration;
1.3289 +
1.3290 + var filter = hasHandler(doc, "beforeChange") || doc.cm && hasHandler(doc.cm, "beforeChange");
1.3291 +
1.3292 + for (var i = event.changes.length - 1; i >= 0; --i) {
1.3293 + var change = event.changes[i];
1.3294 + change.origin = type;
1.3295 + if (filter && !filterChange(doc, change, false)) {
1.3296 + source.length = 0;
1.3297 + return;
1.3298 + }
1.3299 +
1.3300 + antiChanges.push(historyChangeFromChange(doc, change));
1.3301 +
1.3302 + var after = i ? computeSelAfterChange(doc, change, null) : lst(source);
1.3303 + makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));
1.3304 + if (doc.cm) ensureCursorVisible(doc.cm);
1.3305 + var rebased = [];
1.3306 +
1.3307 + // Propagate to the linked documents
1.3308 + linkedDocs(doc, function(doc, sharedHist) {
1.3309 + if (!sharedHist && indexOf(rebased, doc.history) == -1) {
1.3310 + rebaseHist(doc.history, change);
1.3311 + rebased.push(doc.history);
1.3312 + }
1.3313 + makeChangeSingleDoc(doc, change, null, mergeOldSpans(doc, change));
1.3314 + });
1.3315 + }
1.3316 + }
1.3317 +
1.3318 + // Sub-views need their line numbers shifted when text is added
1.3319 + // above or below them in the parent document.
1.3320 + function shiftDoc(doc, distance) {
1.3321 + doc.first += distance;
1.3322 + doc.sel = new Selection(map(doc.sel.ranges, function(range) {
1.3323 + return new Range(Pos(range.anchor.line + distance, range.anchor.ch),
1.3324 + Pos(range.head.line + distance, range.head.ch));
1.3325 + }), doc.sel.primIndex);
1.3326 + if (doc.cm) regChange(doc.cm, doc.first, doc.first - distance, distance);
1.3327 + }
1.3328 +
1.3329 + // More lower-level change function, handling only a single document
1.3330 + // (not linked ones).
1.3331 + function makeChangeSingleDoc(doc, change, selAfter, spans) {
1.3332 + if (doc.cm && !doc.cm.curOp)
1.3333 + return operation(doc.cm, makeChangeSingleDoc)(doc, change, selAfter, spans);
1.3334 +
1.3335 + if (change.to.line < doc.first) {
1.3336 + shiftDoc(doc, change.text.length - 1 - (change.to.line - change.from.line));
1.3337 + return;
1.3338 + }
1.3339 + if (change.from.line > doc.lastLine()) return;
1.3340 +
1.3341 + // Clip the change to the size of this doc
1.3342 + if (change.from.line < doc.first) {
1.3343 + var shift = change.text.length - 1 - (doc.first - change.from.line);
1.3344 + shiftDoc(doc, shift);
1.3345 + change = {from: Pos(doc.first, 0), to: Pos(change.to.line + shift, change.to.ch),
1.3346 + text: [lst(change.text)], origin: change.origin};
1.3347 + }
1.3348 + var last = doc.lastLine();
1.3349 + if (change.to.line > last) {
1.3350 + change = {from: change.from, to: Pos(last, getLine(doc, last).text.length),
1.3351 + text: [change.text[0]], origin: change.origin};
1.3352 + }
1.3353 +
1.3354 + change.removed = getBetween(doc, change.from, change.to);
1.3355 +
1.3356 + if (!selAfter) selAfter = computeSelAfterChange(doc, change, null);
1.3357 + if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
1.3358 + else updateDoc(doc, change, spans);
1.3359 + setSelectionNoUndo(doc, selAfter, sel_dontScroll);
1.3360 + }
1.3361 +
1.3362 + // Handle the interaction of a change to a document with the editor
1.3363 + // that this document is part of.
1.3364 + function makeChangeSingleDocInEditor(cm, change, spans) {
1.3365 + var doc = cm.doc, display = cm.display, from = change.from, to = change.to;
1.3366 +
1.3367 + var recomputeMaxLength = false, checkWidthStart = from.line;
1.3368 + if (!cm.options.lineWrapping) {
1.3369 + checkWidthStart = lineNo(visualLine(getLine(doc, from.line)));
1.3370 + doc.iter(checkWidthStart, to.line + 1, function(line) {
1.3371 + if (line == display.maxLine) {
1.3372 + recomputeMaxLength = true;
1.3373 + return true;
1.3374 + }
1.3375 + });
1.3376 + }
1.3377 +
1.3378 + if (doc.sel.contains(change.from, change.to) > -1)
1.3379 + cm.curOp.cursorActivity = true;
1.3380 +
1.3381 + updateDoc(doc, change, spans, estimateHeight(cm));
1.3382 +
1.3383 + if (!cm.options.lineWrapping) {
1.3384 + doc.iter(checkWidthStart, from.line + change.text.length, function(line) {
1.3385 + var len = lineLength(line);
1.3386 + if (len > display.maxLineLength) {
1.3387 + display.maxLine = line;
1.3388 + display.maxLineLength = len;
1.3389 + display.maxLineChanged = true;
1.3390 + recomputeMaxLength = false;
1.3391 + }
1.3392 + });
1.3393 + if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
1.3394 + }
1.3395 +
1.3396 + // Adjust frontier, schedule worker
1.3397 + doc.frontier = Math.min(doc.frontier, from.line);
1.3398 + startWorker(cm, 400);
1.3399 +
1.3400 + var lendiff = change.text.length - (to.line - from.line) - 1;
1.3401 + // Remember that these lines changed, for updating the display
1.3402 + if (from.line == to.line && change.text.length == 1 && !isWholeLineUpdate(cm.doc, change))
1.3403 + regLineChange(cm, from.line, "text");
1.3404 + else
1.3405 + regChange(cm, from.line, to.line + 1, lendiff);
1.3406 +
1.3407 + if (hasHandler(cm, "change") || hasHandler(cm, "changes"))
1.3408 + (cm.curOp.changeObjs || (cm.curOp.changeObjs = [])).push({
1.3409 + from: from, to: to,
1.3410 + text: change.text,
1.3411 + removed: change.removed,
1.3412 + origin: change.origin
1.3413 + });
1.3414 + }
1.3415 +
1.3416 + function replaceRange(doc, code, from, to, origin) {
1.3417 + if (!to) to = from;
1.3418 + if (cmp(to, from) < 0) { var tmp = to; to = from; from = tmp; }
1.3419 + if (typeof code == "string") code = splitLines(code);
1.3420 + makeChange(doc, {from: from, to: to, text: code, origin: origin});
1.3421 + }
1.3422 +
1.3423 + // SCROLLING THINGS INTO VIEW
1.3424 +
1.3425 + // If an editor sits on the top or bottom of the window, partially
1.3426 + // scrolled out of view, this ensures that the cursor is visible.
1.3427 + function maybeScrollWindow(cm, coords) {
1.3428 + var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
1.3429 + if (coords.top + box.top < 0) doScroll = true;
1.3430 + else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
1.3431 + if (doScroll != null && !phantom) {
1.3432 + var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
1.3433 + (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +
1.3434 + (coords.bottom - coords.top + scrollerCutOff) + "px; left: " +
1.3435 + coords.left + "px; width: 2px;");
1.3436 + cm.display.lineSpace.appendChild(scrollNode);
1.3437 + scrollNode.scrollIntoView(doScroll);
1.3438 + cm.display.lineSpace.removeChild(scrollNode);
1.3439 + }
1.3440 + }
1.3441 +
1.3442 + // Scroll a given position into view (immediately), verifying that
1.3443 + // it actually became visible (as line heights are accurately
1.3444 + // measured, the position of something may 'drift' during drawing).
1.3445 + function scrollPosIntoView(cm, pos, end, margin) {
1.3446 + if (margin == null) margin = 0;
1.3447 + for (;;) {
1.3448 + var changed = false, coords = cursorCoords(cm, pos);
1.3449 + var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
1.3450 + var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),
1.3451 + Math.min(coords.top, endCoords.top) - margin,
1.3452 + Math.max(coords.left, endCoords.left),
1.3453 + Math.max(coords.bottom, endCoords.bottom) + margin);
1.3454 + var startTop = cm.doc.scrollTop, startLeft = cm.doc.scrollLeft;
1.3455 + if (scrollPos.scrollTop != null) {
1.3456 + setScrollTop(cm, scrollPos.scrollTop);
1.3457 + if (Math.abs(cm.doc.scrollTop - startTop) > 1) changed = true;
1.3458 + }
1.3459 + if (scrollPos.scrollLeft != null) {
1.3460 + setScrollLeft(cm, scrollPos.scrollLeft);
1.3461 + if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
1.3462 + }
1.3463 + if (!changed) return coords;
1.3464 + }
1.3465 + }
1.3466 +
1.3467 + // Scroll a given set of coordinates into view (immediately).
1.3468 + function scrollIntoView(cm, x1, y1, x2, y2) {
1.3469 + var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
1.3470 + if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
1.3471 + if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
1.3472 + }
1.3473 +
1.3474 + // Calculate a new scroll position needed to scroll the given
1.3475 + // rectangle into view. Returns an object with scrollTop and
1.3476 + // scrollLeft properties. When these are undefined, the
1.3477 + // vertical/horizontal position does not need to be adjusted.
1.3478 + function calculateScrollPos(cm, x1, y1, x2, y2) {
1.3479 + var display = cm.display, snapMargin = textHeight(cm.display);
1.3480 + if (y1 < 0) y1 = 0;
1.3481 + var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;
1.3482 + var screen = display.scroller.clientHeight - scrollerCutOff, result = {};
1.3483 + var docBottom = cm.doc.height + paddingVert(display);
1.3484 + var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
1.3485 + if (y1 < screentop) {
1.3486 + result.scrollTop = atTop ? 0 : y1;
1.3487 + } else if (y2 > screentop + screen) {
1.3488 + var newTop = Math.min(y1, (atBottom ? docBottom : y2) - screen);
1.3489 + if (newTop != screentop) result.scrollTop = newTop;
1.3490 + }
1.3491 +
1.3492 + var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;
1.3493 + var screenw = display.scroller.clientWidth - scrollerCutOff;
1.3494 + x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
1.3495 + var gutterw = display.gutters.offsetWidth;
1.3496 + var atLeft = x1 < gutterw + 10;
1.3497 + if (x1 < screenleft + gutterw || atLeft) {
1.3498 + if (atLeft) x1 = 0;
1.3499 + result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
1.3500 + } else if (x2 > screenw + screenleft - 3) {
1.3501 + result.scrollLeft = x2 + 10 - screenw;
1.3502 + }
1.3503 + return result;
1.3504 + }
1.3505 +
1.3506 + // Store a relative adjustment to the scroll position in the current
1.3507 + // operation (to be applied when the operation finishes).
1.3508 + function addToScrollPos(cm, left, top) {
1.3509 + if (left != null || top != null) resolveScrollToPos(cm);
1.3510 + if (left != null)
1.3511 + cm.curOp.scrollLeft = (cm.curOp.scrollLeft == null ? cm.doc.scrollLeft : cm.curOp.scrollLeft) + left;
1.3512 + if (top != null)
1.3513 + cm.curOp.scrollTop = (cm.curOp.scrollTop == null ? cm.doc.scrollTop : cm.curOp.scrollTop) + top;
1.3514 + }
1.3515 +
1.3516 + // Make sure that at the end of the operation the current cursor is
1.3517 + // shown.
1.3518 + function ensureCursorVisible(cm) {
1.3519 + resolveScrollToPos(cm);
1.3520 + var cur = cm.getCursor(), from = cur, to = cur;
1.3521 + if (!cm.options.lineWrapping) {
1.3522 + from = cur.ch ? Pos(cur.line, cur.ch - 1) : cur;
1.3523 + to = Pos(cur.line, cur.ch + 1);
1.3524 + }
1.3525 + cm.curOp.scrollToPos = {from: from, to: to, margin: cm.options.cursorScrollMargin, isCursor: true};
1.3526 + }
1.3527 +
1.3528 + // When an operation has its scrollToPos property set, and another
1.3529 + // scroll action is applied before the end of the operation, this
1.3530 + // 'simulates' scrolling that position into view in a cheap way, so
1.3531 + // that the effect of intermediate scroll commands is not ignored.
1.3532 + function resolveScrollToPos(cm) {
1.3533 + var range = cm.curOp.scrollToPos;
1.3534 + if (range) {
1.3535 + cm.curOp.scrollToPos = null;
1.3536 + var from = estimateCoords(cm, range.from), to = estimateCoords(cm, range.to);
1.3537 + var sPos = calculateScrollPos(cm, Math.min(from.left, to.left),
1.3538 + Math.min(from.top, to.top) - range.margin,
1.3539 + Math.max(from.right, to.right),
1.3540 + Math.max(from.bottom, to.bottom) + range.margin);
1.3541 + cm.scrollTo(sPos.scrollLeft, sPos.scrollTop);
1.3542 + }
1.3543 + }
1.3544 +
1.3545 + // API UTILITIES
1.3546 +
1.3547 + // Indent the given line. The how parameter can be "smart",
1.3548 + // "add"/null, "subtract", or "prev". When aggressive is false
1.3549 + // (typically set to true for forced single-line indents), empty
1.3550 + // lines are not indented, and places where the mode returns Pass
1.3551 + // are left alone.
1.3552 + function indentLine(cm, n, how, aggressive) {
1.3553 + var doc = cm.doc, state;
1.3554 + if (how == null) how = "add";
1.3555 + if (how == "smart") {
1.3556 + // Fall back to "prev" when the mode doesn't have an indentation
1.3557 + // method.
1.3558 + if (!cm.doc.mode.indent) how = "prev";
1.3559 + else state = getStateBefore(cm, n);
1.3560 + }
1.3561 +
1.3562 + var tabSize = cm.options.tabSize;
1.3563 + var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
1.3564 + if (line.stateAfter) line.stateAfter = null;
1.3565 + var curSpaceString = line.text.match(/^\s*/)[0], indentation;
1.3566 + if (!aggressive && !/\S/.test(line.text)) {
1.3567 + indentation = 0;
1.3568 + how = "not";
1.3569 + } else if (how == "smart") {
1.3570 + indentation = cm.doc.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
1.3571 + if (indentation == Pass) {
1.3572 + if (!aggressive) return;
1.3573 + how = "prev";
1.3574 + }
1.3575 + }
1.3576 + if (how == "prev") {
1.3577 + if (n > doc.first) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
1.3578 + else indentation = 0;
1.3579 + } else if (how == "add") {
1.3580 + indentation = curSpace + cm.options.indentUnit;
1.3581 + } else if (how == "subtract") {
1.3582 + indentation = curSpace - cm.options.indentUnit;
1.3583 + } else if (typeof how == "number") {
1.3584 + indentation = curSpace + how;
1.3585 + }
1.3586 + indentation = Math.max(0, indentation);
1.3587 +
1.3588 + var indentString = "", pos = 0;
1.3589 + if (cm.options.indentWithTabs)
1.3590 + for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
1.3591 + if (pos < indentation) indentString += spaceStr(indentation - pos);
1.3592 +
1.3593 + if (indentString != curSpaceString) {
1.3594 + replaceRange(cm.doc, indentString, Pos(n, 0), Pos(n, curSpaceString.length), "+input");
1.3595 + } else {
1.3596 + // Ensure that, if the cursor was in the whitespace at the start
1.3597 + // of the line, it is moved to the end of that space.
1.3598 + for (var i = 0; i < doc.sel.ranges.length; i++) {
1.3599 + var range = doc.sel.ranges[i];
1.3600 + if (range.head.line == n && range.head.ch < curSpaceString.length) {
1.3601 + var pos = Pos(n, curSpaceString.length);
1.3602 + replaceOneSelection(doc, i, new Range(pos, pos));
1.3603 + break;
1.3604 + }
1.3605 + }
1.3606 + }
1.3607 + line.stateAfter = null;
1.3608 + }
1.3609 +
1.3610 + // Utility for applying a change to a line by handle or number,
1.3611 + // returning the number and optionally registering the line as
1.3612 + // changed.
1.3613 + function changeLine(cm, handle, changeType, op) {
1.3614 + var no = handle, line = handle, doc = cm.doc;
1.3615 + if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
1.3616 + else no = lineNo(handle);
1.3617 + if (no == null) return null;
1.3618 + if (op(line, no)) regLineChange(cm, no, changeType);
1.3619 + else return null;
1.3620 + return line;
1.3621 + }
1.3622 +
1.3623 + // Helper for deleting text near the selection(s), used to implement
1.3624 + // backspace, delete, and similar functionality.
1.3625 + function deleteNearSelection(cm, compute) {
1.3626 + var ranges = cm.doc.sel.ranges, kill = [];
1.3627 + // Build up a set of ranges to kill first, merging overlapping
1.3628 + // ranges.
1.3629 + for (var i = 0; i < ranges.length; i++) {
1.3630 + var toKill = compute(ranges[i]);
1.3631 + while (kill.length && cmp(toKill.from, lst(kill).to) <= 0) {
1.3632 + var replaced = kill.pop();
1.3633 + if (cmp(replaced.from, toKill.from) < 0) {
1.3634 + toKill.from = replaced.from;
1.3635 + break;
1.3636 + }
1.3637 + }
1.3638 + kill.push(toKill);
1.3639 + }
1.3640 + // Next, remove those actual ranges.
1.3641 + runInOp(cm, function() {
1.3642 + for (var i = kill.length - 1; i >= 0; i--)
1.3643 + replaceRange(cm.doc, "", kill[i].from, kill[i].to, "+delete");
1.3644 + ensureCursorVisible(cm);
1.3645 + });
1.3646 + }
1.3647 +
1.3648 + // Used for horizontal relative motion. Dir is -1 or 1 (left or
1.3649 + // right), unit can be "char", "column" (like char, but doesn't
1.3650 + // cross line boundaries), "word" (across next word), or "group" (to
1.3651 + // the start of next group of word or non-word-non-whitespace
1.3652 + // chars). The visually param controls whether, in right-to-left
1.3653 + // text, direction 1 means to move towards the next index in the
1.3654 + // string, or towards the character to the right of the current
1.3655 + // position. The resulting position will have a hitSide=true
1.3656 + // property if it reached the end of the document.
1.3657 + function findPosH(doc, pos, dir, unit, visually) {
1.3658 + var line = pos.line, ch = pos.ch, origDir = dir;
1.3659 + var lineObj = getLine(doc, line);
1.3660 + var possible = true;
1.3661 + function findNextLine() {
1.3662 + var l = line + dir;
1.3663 + if (l < doc.first || l >= doc.first + doc.size) return (possible = false);
1.3664 + line = l;
1.3665 + return lineObj = getLine(doc, l);
1.3666 + }
1.3667 + function moveOnce(boundToLine) {
1.3668 + var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
1.3669 + if (next == null) {
1.3670 + if (!boundToLine && findNextLine()) {
1.3671 + if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
1.3672 + else ch = dir < 0 ? lineObj.text.length : 0;
1.3673 + } else return (possible = false);
1.3674 + } else ch = next;
1.3675 + return true;
1.3676 + }
1.3677 +
1.3678 + if (unit == "char") moveOnce();
1.3679 + else if (unit == "column") moveOnce(true);
1.3680 + else if (unit == "word" || unit == "group") {
1.3681 + var sawType = null, group = unit == "group";
1.3682 + for (var first = true;; first = false) {
1.3683 + if (dir < 0 && !moveOnce(!first)) break;
1.3684 + var cur = lineObj.text.charAt(ch) || "\n";
1.3685 + var type = isWordChar(cur) ? "w"
1.3686 + : group && cur == "\n" ? "n"
1.3687 + : !group || /\s/.test(cur) ? null
1.3688 + : "p";
1.3689 + if (group && !first && !type) type = "s";
1.3690 + if (sawType && sawType != type) {
1.3691 + if (dir < 0) {dir = 1; moveOnce();}
1.3692 + break;
1.3693 + }
1.3694 +
1.3695 + if (type) sawType = type;
1.3696 + if (dir > 0 && !moveOnce(!first)) break;
1.3697 + }
1.3698 + }
1.3699 + var result = skipAtomic(doc, Pos(line, ch), origDir, true);
1.3700 + if (!possible) result.hitSide = true;
1.3701 + return result;
1.3702 + }
1.3703 +
1.3704 + // For relative vertical movement. Dir may be -1 or 1. Unit can be
1.3705 + // "page" or "line". The resulting position will have a hitSide=true
1.3706 + // property if it reached the end of the document.
1.3707 + function findPosV(cm, pos, dir, unit) {
1.3708 + var doc = cm.doc, x = pos.left, y;
1.3709 + if (unit == "page") {
1.3710 + var pageSize = Math.min(cm.display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
1.3711 + y = pos.top + dir * (pageSize - (dir < 0 ? 1.5 : .5) * textHeight(cm.display));
1.3712 + } else if (unit == "line") {
1.3713 + y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
1.3714 + }
1.3715 + for (;;) {
1.3716 + var target = coordsChar(cm, x, y);
1.3717 + if (!target.outside) break;
1.3718 + if (dir < 0 ? y <= 0 : y >= doc.height) { target.hitSide = true; break; }
1.3719 + y += dir * 5;
1.3720 + }
1.3721 + return target;
1.3722 + }
1.3723 +
1.3724 + // Find the word at the given position (as returned by coordsChar).
1.3725 + function findWordAt(doc, pos) {
1.3726 + var line = getLine(doc, pos.line).text;
1.3727 + var start = pos.ch, end = pos.ch;
1.3728 + if (line) {
1.3729 + if ((pos.xRel < 0 || end == line.length) && start) --start; else ++end;
1.3730 + var startChar = line.charAt(start);
1.3731 + var check = isWordChar(startChar) ? isWordChar
1.3732 + : /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);}
1.3733 + : function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
1.3734 + while (start > 0 && check(line.charAt(start - 1))) --start;
1.3735 + while (end < line.length && check(line.charAt(end))) ++end;
1.3736 + }
1.3737 + return new Range(Pos(pos.line, start), Pos(pos.line, end));
1.3738 + }
1.3739 +
1.3740 + // EDITOR METHODS
1.3741 +
1.3742 + // The publicly visible API. Note that methodOp(f) means
1.3743 + // 'wrap f in an operation, performed on its `this` parameter'.
1.3744 +
1.3745 + // This is not the complete set of editor methods. Most of the
1.3746 + // methods defined on the Doc type are also injected into
1.3747 + // CodeMirror.prototype, for backwards compatibility and
1.3748 + // convenience.
1.3749 +
1.3750 + CodeMirror.prototype = {
1.3751 + constructor: CodeMirror,
1.3752 + focus: function(){window.focus(); focusInput(this); fastPoll(this);},
1.3753 +
1.3754 + setOption: function(option, value) {
1.3755 + var options = this.options, old = options[option];
1.3756 + if (options[option] == value && option != "mode") return;
1.3757 + options[option] = value;
1.3758 + if (optionHandlers.hasOwnProperty(option))
1.3759 + operation(this, optionHandlers[option])(this, value, old);
1.3760 + },
1.3761 +
1.3762 + getOption: function(option) {return this.options[option];},
1.3763 + getDoc: function() {return this.doc;},
1.3764 +
1.3765 + addKeyMap: function(map, bottom) {
1.3766 + this.state.keyMaps[bottom ? "push" : "unshift"](map);
1.3767 + },
1.3768 + removeKeyMap: function(map) {
1.3769 + var maps = this.state.keyMaps;
1.3770 + for (var i = 0; i < maps.length; ++i)
1.3771 + if (maps[i] == map || (typeof maps[i] != "string" && maps[i].name == map)) {
1.3772 + maps.splice(i, 1);
1.3773 + return true;
1.3774 + }
1.3775 + },
1.3776 +
1.3777 + addOverlay: methodOp(function(spec, options) {
1.3778 + var mode = spec.token ? spec : CodeMirror.getMode(this.options, spec);
1.3779 + if (mode.startState) throw new Error("Overlays may not be stateful.");
1.3780 + this.state.overlays.push({mode: mode, modeSpec: spec, opaque: options && options.opaque});
1.3781 + this.state.modeGen++;
1.3782 + regChange(this);
1.3783 + }),
1.3784 + removeOverlay: methodOp(function(spec) {
1.3785 + var overlays = this.state.overlays;
1.3786 + for (var i = 0; i < overlays.length; ++i) {
1.3787 + var cur = overlays[i].modeSpec;
1.3788 + if (cur == spec || typeof spec == "string" && cur.name == spec) {
1.3789 + overlays.splice(i, 1);
1.3790 + this.state.modeGen++;
1.3791 + regChange(this);
1.3792 + return;
1.3793 + }
1.3794 + }
1.3795 + }),
1.3796 +
1.3797 + indentLine: methodOp(function(n, dir, aggressive) {
1.3798 + if (typeof dir != "string" && typeof dir != "number") {
1.3799 + if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
1.3800 + else dir = dir ? "add" : "subtract";
1.3801 + }
1.3802 + if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);
1.3803 + }),
1.3804 + indentSelection: methodOp(function(how) {
1.3805 + var ranges = this.doc.sel.ranges, end = -1;
1.3806 + for (var i = 0; i < ranges.length; i++) {
1.3807 + var range = ranges[i];
1.3808 + if (!range.empty()) {
1.3809 + var start = Math.max(end, range.from().line);
1.3810 + var to = range.to();
1.3811 + end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
1.3812 + for (var j = start; j < end; ++j)
1.3813 + indentLine(this, j, how);
1.3814 + } else if (range.head.line > end) {
1.3815 + indentLine(this, range.head.line, how, true);
1.3816 + end = range.head.line;
1.3817 + if (i == this.doc.sel.primIndex) ensureCursorVisible(this);
1.3818 + }
1.3819 + }
1.3820 + }),
1.3821 +
1.3822 + // Fetch the parser token for a given character. Useful for hacks
1.3823 + // that want to inspect the mode state (say, for completion).
1.3824 + getTokenAt: function(pos, precise) {
1.3825 + var doc = this.doc;
1.3826 + pos = clipPos(doc, pos);
1.3827 + var state = getStateBefore(this, pos.line, precise), mode = this.doc.mode;
1.3828 + var line = getLine(doc, pos.line);
1.3829 + var stream = new StringStream(line.text, this.options.tabSize);
1.3830 + while (stream.pos < pos.ch && !stream.eol()) {
1.3831 + stream.start = stream.pos;
1.3832 + var style = mode.token(stream, state);
1.3833 + }
1.3834 + return {start: stream.start,
1.3835 + end: stream.pos,
1.3836 + string: stream.current(),
1.3837 + type: style || null,
1.3838 + state: state};
1.3839 + },
1.3840 +
1.3841 + getTokenTypeAt: function(pos) {
1.3842 + pos = clipPos(this.doc, pos);
1.3843 + var styles = getLineStyles(this, getLine(this.doc, pos.line));
1.3844 + var before = 0, after = (styles.length - 1) / 2, ch = pos.ch;
1.3845 + if (ch == 0) return styles[2];
1.3846 + for (;;) {
1.3847 + var mid = (before + after) >> 1;
1.3848 + if ((mid ? styles[mid * 2 - 1] : 0) >= ch) after = mid;
1.3849 + else if (styles[mid * 2 + 1] < ch) before = mid + 1;
1.3850 + else return styles[mid * 2 + 2];
1.3851 + }
1.3852 + },
1.3853 +
1.3854 + getModeAt: function(pos) {
1.3855 + var mode = this.doc.mode;
1.3856 + if (!mode.innerMode) return mode;
1.3857 + return CodeMirror.innerMode(mode, this.getTokenAt(pos).state).mode;
1.3858 + },
1.3859 +
1.3860 + getHelper: function(pos, type) {
1.3861 + return this.getHelpers(pos, type)[0];
1.3862 + },
1.3863 +
1.3864 + getHelpers: function(pos, type) {
1.3865 + var found = [];
1.3866 + if (!helpers.hasOwnProperty(type)) return helpers;
1.3867 + var help = helpers[type], mode = this.getModeAt(pos);
1.3868 + if (typeof mode[type] == "string") {
1.3869 + if (help[mode[type]]) found.push(help[mode[type]]);
1.3870 + } else if (mode[type]) {
1.3871 + for (var i = 0; i < mode[type].length; i++) {
1.3872 + var val = help[mode[type][i]];
1.3873 + if (val) found.push(val);
1.3874 + }
1.3875 + } else if (mode.helperType && help[mode.helperType]) {
1.3876 + found.push(help[mode.helperType]);
1.3877 + } else if (help[mode.name]) {
1.3878 + found.push(help[mode.name]);
1.3879 + }
1.3880 + for (var i = 0; i < help._global.length; i++) {
1.3881 + var cur = help._global[i];
1.3882 + if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
1.3883 + found.push(cur.val);
1.3884 + }
1.3885 + return found;
1.3886 + },
1.3887 +
1.3888 + getStateAfter: function(line, precise) {
1.3889 + var doc = this.doc;
1.3890 + line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
1.3891 + return getStateBefore(this, line + 1, precise);
1.3892 + },
1.3893 +
1.3894 + cursorCoords: function(start, mode) {
1.3895 + var pos, range = this.doc.sel.primary();
1.3896 + if (start == null) pos = range.head;
1.3897 + else if (typeof start == "object") pos = clipPos(this.doc, start);
1.3898 + else pos = start ? range.from() : range.to();
1.3899 + return cursorCoords(this, pos, mode || "page");
1.3900 + },
1.3901 +
1.3902 + charCoords: function(pos, mode) {
1.3903 + return charCoords(this, clipPos(this.doc, pos), mode || "page");
1.3904 + },
1.3905 +
1.3906 + coordsChar: function(coords, mode) {
1.3907 + coords = fromCoordSystem(this, coords, mode || "page");
1.3908 + return coordsChar(this, coords.left, coords.top);
1.3909 + },
1.3910 +
1.3911 + lineAtHeight: function(height, mode) {
1.3912 + height = fromCoordSystem(this, {top: height, left: 0}, mode || "page").top;
1.3913 + return lineAtHeight(this.doc, height + this.display.viewOffset);
1.3914 + },
1.3915 + heightAtLine: function(line, mode) {
1.3916 + var end = false, last = this.doc.first + this.doc.size - 1;
1.3917 + if (line < this.doc.first) line = this.doc.first;
1.3918 + else if (line > last) { line = last; end = true; }
1.3919 + var lineObj = getLine(this.doc, line);
1.3920 + return intoCoordSystem(this, lineObj, {top: 0, left: 0}, mode || "page").top +
1.3921 + (end ? this.doc.height - heightAtLine(lineObj) : 0);
1.3922 + },
1.3923 +
1.3924 + defaultTextHeight: function() { return textHeight(this.display); },
1.3925 + defaultCharWidth: function() { return charWidth(this.display); },
1.3926 +
1.3927 + setGutterMarker: methodOp(function(line, gutterID, value) {
1.3928 + return changeLine(this, line, "gutter", function(line) {
1.3929 + var markers = line.gutterMarkers || (line.gutterMarkers = {});
1.3930 + markers[gutterID] = value;
1.3931 + if (!value && isEmpty(markers)) line.gutterMarkers = null;
1.3932 + return true;
1.3933 + });
1.3934 + }),
1.3935 +
1.3936 + clearGutter: methodOp(function(gutterID) {
1.3937 + var cm = this, doc = cm.doc, i = doc.first;
1.3938 + doc.iter(function(line) {
1.3939 + if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
1.3940 + line.gutterMarkers[gutterID] = null;
1.3941 + regLineChange(cm, i, "gutter");
1.3942 + if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
1.3943 + }
1.3944 + ++i;
1.3945 + });
1.3946 + }),
1.3947 +
1.3948 + addLineClass: methodOp(function(handle, where, cls) {
1.3949 + return changeLine(this, handle, "class", function(line) {
1.3950 + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
1.3951 + if (!line[prop]) line[prop] = cls;
1.3952 + else if (new RegExp("(?:^|\\s)" + cls + "(?:$|\\s)").test(line[prop])) return false;
1.3953 + else line[prop] += " " + cls;
1.3954 + return true;
1.3955 + });
1.3956 + }),
1.3957 +
1.3958 + removeLineClass: methodOp(function(handle, where, cls) {
1.3959 + return changeLine(this, handle, "class", function(line) {
1.3960 + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
1.3961 + var cur = line[prop];
1.3962 + if (!cur) return false;
1.3963 + else if (cls == null) line[prop] = null;
1.3964 + else {
1.3965 + var found = cur.match(new RegExp("(?:^|\\s+)" + cls + "(?:$|\\s+)"));
1.3966 + if (!found) return false;
1.3967 + var end = found.index + found[0].length;
1.3968 + line[prop] = cur.slice(0, found.index) + (!found.index || end == cur.length ? "" : " ") + cur.slice(end) || null;
1.3969 + }
1.3970 + return true;
1.3971 + });
1.3972 + }),
1.3973 +
1.3974 + addLineWidget: methodOp(function(handle, node, options) {
1.3975 + return addLineWidget(this, handle, node, options);
1.3976 + }),
1.3977 +
1.3978 + removeLineWidget: function(widget) { widget.clear(); },
1.3979 +
1.3980 + lineInfo: function(line) {
1.3981 + if (typeof line == "number") {
1.3982 + if (!isLine(this.doc, line)) return null;
1.3983 + var n = line;
1.3984 + line = getLine(this.doc, line);
1.3985 + if (!line) return null;
1.3986 + } else {
1.3987 + var n = lineNo(line);
1.3988 + if (n == null) return null;
1.3989 + }
1.3990 + return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
1.3991 + textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
1.3992 + widgets: line.widgets};
1.3993 + },
1.3994 +
1.3995 + getViewport: function() { return {from: this.display.viewFrom, to: this.display.viewTo};},
1.3996 +
1.3997 + addWidget: function(pos, node, scroll, vert, horiz) {
1.3998 + var display = this.display;
1.3999 + pos = cursorCoords(this, clipPos(this.doc, pos));
1.4000 + var top = pos.bottom, left = pos.left;
1.4001 + node.style.position = "absolute";
1.4002 + display.sizer.appendChild(node);
1.4003 + if (vert == "over") {
1.4004 + top = pos.top;
1.4005 + } else if (vert == "above" || vert == "near") {
1.4006 + var vspace = Math.max(display.wrapper.clientHeight, this.doc.height),
1.4007 + hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
1.4008 + // Default to positioning above (if specified and possible); otherwise default to positioning below
1.4009 + if ((vert == 'above' || pos.bottom + node.offsetHeight > vspace) && pos.top > node.offsetHeight)
1.4010 + top = pos.top - node.offsetHeight;
1.4011 + else if (pos.bottom + node.offsetHeight <= vspace)
1.4012 + top = pos.bottom;
1.4013 + if (left + node.offsetWidth > hspace)
1.4014 + left = hspace - node.offsetWidth;
1.4015 + }
1.4016 + node.style.top = top + "px";
1.4017 + node.style.left = node.style.right = "";
1.4018 + if (horiz == "right") {
1.4019 + left = display.sizer.clientWidth - node.offsetWidth;
1.4020 + node.style.right = "0px";
1.4021 + } else {
1.4022 + if (horiz == "left") left = 0;
1.4023 + else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
1.4024 + node.style.left = left + "px";
1.4025 + }
1.4026 + if (scroll)
1.4027 + scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
1.4028 + },
1.4029 +
1.4030 + triggerOnKeyDown: methodOp(onKeyDown),
1.4031 + triggerOnKeyPress: methodOp(onKeyPress),
1.4032 + triggerOnKeyUp: methodOp(onKeyUp),
1.4033 +
1.4034 + execCommand: function(cmd) {
1.4035 + if (commands.hasOwnProperty(cmd))
1.4036 + return commands[cmd](this);
1.4037 + },
1.4038 +
1.4039 + findPosH: function(from, amount, unit, visually) {
1.4040 + var dir = 1;
1.4041 + if (amount < 0) { dir = -1; amount = -amount; }
1.4042 + for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
1.4043 + cur = findPosH(this.doc, cur, dir, unit, visually);
1.4044 + if (cur.hitSide) break;
1.4045 + }
1.4046 + return cur;
1.4047 + },
1.4048 +
1.4049 + moveH: methodOp(function(dir, unit) {
1.4050 + var cm = this;
1.4051 + cm.extendSelectionsBy(function(range) {
1.4052 + if (cm.display.shift || cm.doc.extend || range.empty())
1.4053 + return findPosH(cm.doc, range.head, dir, unit, cm.options.rtlMoveVisually);
1.4054 + else
1.4055 + return dir < 0 ? range.from() : range.to();
1.4056 + }, sel_move);
1.4057 + }),
1.4058 +
1.4059 + deleteH: methodOp(function(dir, unit) {
1.4060 + var sel = this.doc.sel, doc = this.doc;
1.4061 + if (sel.somethingSelected())
1.4062 + doc.replaceSelection("", null, "+delete");
1.4063 + else
1.4064 + deleteNearSelection(this, function(range) {
1.4065 + var other = findPosH(doc, range.head, dir, unit, false);
1.4066 + return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
1.4067 + });
1.4068 + }),
1.4069 +
1.4070 + findPosV: function(from, amount, unit, goalColumn) {
1.4071 + var dir = 1, x = goalColumn;
1.4072 + if (amount < 0) { dir = -1; amount = -amount; }
1.4073 + for (var i = 0, cur = clipPos(this.doc, from); i < amount; ++i) {
1.4074 + var coords = cursorCoords(this, cur, "div");
1.4075 + if (x == null) x = coords.left;
1.4076 + else coords.left = x;
1.4077 + cur = findPosV(this, coords, dir, unit);
1.4078 + if (cur.hitSide) break;
1.4079 + }
1.4080 + return cur;
1.4081 + },
1.4082 +
1.4083 + moveV: methodOp(function(dir, unit) {
1.4084 + var cm = this, doc = this.doc, goals = [];
1.4085 + var collapse = !cm.display.shift && !doc.extend && doc.sel.somethingSelected();
1.4086 + doc.extendSelectionsBy(function(range) {
1.4087 + if (collapse)
1.4088 + return dir < 0 ? range.from() : range.to();
1.4089 + var headPos = cursorCoords(cm, range.head, "div");
1.4090 + if (range.goalColumn != null) headPos.left = range.goalColumn;
1.4091 + goals.push(headPos.left);
1.4092 + var pos = findPosV(cm, headPos, dir, unit);
1.4093 + if (unit == "page" && range == doc.sel.primary())
1.4094 + addToScrollPos(cm, null, charCoords(cm, pos, "div").top - headPos.top);
1.4095 + return pos;
1.4096 + }, sel_move);
1.4097 + if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
1.4098 + doc.sel.ranges[i].goalColumn = goals[i];
1.4099 + }),
1.4100 +
1.4101 + toggleOverwrite: function(value) {
1.4102 + if (value != null && value == this.state.overwrite) return;
1.4103 + if (this.state.overwrite = !this.state.overwrite)
1.4104 + this.display.cursorDiv.className += " CodeMirror-overwrite";
1.4105 + else
1.4106 + this.display.cursorDiv.className = this.display.cursorDiv.className.replace(" CodeMirror-overwrite", "");
1.4107 +
1.4108 + signal(this, "overwriteToggle", this, this.state.overwrite);
1.4109 + },
1.4110 + hasFocus: function() { return activeElt() == this.display.input; },
1.4111 +
1.4112 + scrollTo: methodOp(function(x, y) {
1.4113 + if (x != null || y != null) resolveScrollToPos(this);
1.4114 + if (x != null) this.curOp.scrollLeft = x;
1.4115 + if (y != null) this.curOp.scrollTop = y;
1.4116 + }),
1.4117 + getScrollInfo: function() {
1.4118 + var scroller = this.display.scroller, co = scrollerCutOff;
1.4119 + return {left: scroller.scrollLeft, top: scroller.scrollTop,
1.4120 + height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
1.4121 + clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
1.4122 + },
1.4123 +
1.4124 + scrollIntoView: methodOp(function(range, margin) {
1.4125 + if (range == null) {
1.4126 + range = {from: this.doc.sel.primary().head, to: null};
1.4127 + if (margin == null) margin = this.options.cursorScrollMargin;
1.4128 + } else if (typeof range == "number") {
1.4129 + range = {from: Pos(range, 0), to: null};
1.4130 + } else if (range.from == null) {
1.4131 + range = {from: range, to: null};
1.4132 + }
1.4133 + if (!range.to) range.to = range.from;
1.4134 + range.margin = margin || 0;
1.4135 +
1.4136 + if (range.from.line != null) {
1.4137 + resolveScrollToPos(this);
1.4138 + this.curOp.scrollToPos = range;
1.4139 + } else {
1.4140 + var sPos = calculateScrollPos(this, Math.min(range.from.left, range.to.left),
1.4141 + Math.min(range.from.top, range.to.top) - range.margin,
1.4142 + Math.max(range.from.right, range.to.right),
1.4143 + Math.max(range.from.bottom, range.to.bottom) + range.margin);
1.4144 + this.scrollTo(sPos.scrollLeft, sPos.scrollTop);
1.4145 + }
1.4146 + }),
1.4147 +
1.4148 + setSize: methodOp(function(width, height) {
1.4149 + function interpret(val) {
1.4150 + return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
1.4151 + }
1.4152 + if (width != null) this.display.wrapper.style.width = interpret(width);
1.4153 + if (height != null) this.display.wrapper.style.height = interpret(height);
1.4154 + if (this.options.lineWrapping) clearLineMeasurementCache(this);
1.4155 + this.curOp.forceUpdate = true;
1.4156 + signal(this, "refresh", this);
1.4157 + }),
1.4158 +
1.4159 + operation: function(f){return runInOp(this, f);},
1.4160 +
1.4161 + refresh: methodOp(function() {
1.4162 + var oldHeight = this.display.cachedTextHeight;
1.4163 + regChange(this);
1.4164 + clearCaches(this);
1.4165 + this.scrollTo(this.doc.scrollLeft, this.doc.scrollTop);
1.4166 + if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
1.4167 + estimateLineHeights(this);
1.4168 + signal(this, "refresh", this);
1.4169 + }),
1.4170 +
1.4171 + swapDoc: methodOp(function(doc) {
1.4172 + var old = this.doc;
1.4173 + old.cm = null;
1.4174 + attachDoc(this, doc);
1.4175 + clearCaches(this);
1.4176 + resetInput(this);
1.4177 + this.scrollTo(doc.scrollLeft, doc.scrollTop);
1.4178 + signalLater(this, "swapDoc", this, old);
1.4179 + return old;
1.4180 + }),
1.4181 +
1.4182 + getInputField: function(){return this.display.input;},
1.4183 + getWrapperElement: function(){return this.display.wrapper;},
1.4184 + getScrollerElement: function(){return this.display.scroller;},
1.4185 + getGutterElement: function(){return this.display.gutters;}
1.4186 + };
1.4187 + eventMixin(CodeMirror);
1.4188 +
1.4189 + // OPTION DEFAULTS
1.4190 +
1.4191 + // The default configuration options.
1.4192 + var defaults = CodeMirror.defaults = {};
1.4193 + // Functions to run when options are changed.
1.4194 + var optionHandlers = CodeMirror.optionHandlers = {};
1.4195 +
1.4196 + function option(name, deflt, handle, notOnInit) {
1.4197 + CodeMirror.defaults[name] = deflt;
1.4198 + if (handle) optionHandlers[name] =
1.4199 + notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
1.4200 + }
1.4201 +
1.4202 + // Passed to option handlers when there is no old value.
1.4203 + var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
1.4204 +
1.4205 + // These two are, on init, called from the constructor because they
1.4206 + // have to be initialized before the editor can start at all.
1.4207 + option("value", "", function(cm, val) {
1.4208 + cm.setValue(val);
1.4209 + }, true);
1.4210 + option("mode", null, function(cm, val) {
1.4211 + cm.doc.modeOption = val;
1.4212 + loadMode(cm);
1.4213 + }, true);
1.4214 +
1.4215 + option("indentUnit", 2, loadMode, true);
1.4216 + option("indentWithTabs", false);
1.4217 + option("smartIndent", true);
1.4218 + option("tabSize", 4, function(cm) {
1.4219 + resetModeState(cm);
1.4220 + clearCaches(cm);
1.4221 + regChange(cm);
1.4222 + }, true);
1.4223 + option("specialChars", /[\t\u0000-\u0019\u00ad\u200b\u2028\u2029\ufeff]/g, function(cm, val) {
1.4224 + cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
1.4225 + cm.refresh();
1.4226 + }, true);
1.4227 + option("specialCharPlaceholder", defaultSpecialCharPlaceholder, function(cm) {cm.refresh();}, true);
1.4228 + option("electricChars", true);
1.4229 + option("rtlMoveVisually", !windows);
1.4230 + option("wholeLineUpdateBefore", true);
1.4231 +
1.4232 + option("theme", "default", function(cm) {
1.4233 + themeChanged(cm);
1.4234 + guttersChanged(cm);
1.4235 + }, true);
1.4236 + option("keyMap", "default", keyMapChanged);
1.4237 + option("extraKeys", null);
1.4238 +
1.4239 + option("lineWrapping", false, wrappingChanged, true);
1.4240 + option("gutters", [], function(cm) {
1.4241 + setGuttersForLineNumbers(cm.options);
1.4242 + guttersChanged(cm);
1.4243 + }, true);
1.4244 + option("fixedGutter", true, function(cm, val) {
1.4245 + cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
1.4246 + cm.refresh();
1.4247 + }, true);
1.4248 + option("coverGutterNextToScrollbar", false, updateScrollbars, true);
1.4249 + option("lineNumbers", false, function(cm) {
1.4250 + setGuttersForLineNumbers(cm.options);
1.4251 + guttersChanged(cm);
1.4252 + }, true);
1.4253 + option("firstLineNumber", 1, guttersChanged, true);
1.4254 + option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
1.4255 + option("showCursorWhenSelecting", false, updateSelection, true);
1.4256 +
1.4257 + option("resetSelectionOnContextMenu", true);
1.4258 +
1.4259 + option("readOnly", false, function(cm, val) {
1.4260 + if (val == "nocursor") {
1.4261 + onBlur(cm);
1.4262 + cm.display.input.blur();
1.4263 + cm.display.disabled = true;
1.4264 + } else {
1.4265 + cm.display.disabled = false;
1.4266 + if (!val) resetInput(cm);
1.4267 + }
1.4268 + });
1.4269 + option("disableInput", false, function(cm, val) {if (!val) resetInput(cm);}, true);
1.4270 + option("dragDrop", true);
1.4271 +
1.4272 + option("cursorBlinkRate", 530);
1.4273 + option("cursorScrollMargin", 0);
1.4274 + option("cursorHeight", 1);
1.4275 + option("workTime", 100);
1.4276 + option("workDelay", 100);
1.4277 + option("flattenSpans", true, resetModeState, true);
1.4278 + option("addModeClass", false, resetModeState, true);
1.4279 + option("pollInterval", 100);
1.4280 + option("undoDepth", 200, function(cm, val){cm.doc.history.undoDepth = val;});
1.4281 + option("historyEventDelay", 1250);
1.4282 + option("viewportMargin", 10, function(cm){cm.refresh();}, true);
1.4283 + option("maxHighlightLength", 10000, resetModeState, true);
1.4284 + option("moveInputWithCursor", true, function(cm, val) {
1.4285 + if (!val) cm.display.inputDiv.style.top = cm.display.inputDiv.style.left = 0;
1.4286 + });
1.4287 +
1.4288 + option("tabindex", null, function(cm, val) {
1.4289 + cm.display.input.tabIndex = val || "";
1.4290 + });
1.4291 + option("autofocus", null);
1.4292 +
1.4293 + // MODE DEFINITION AND QUERYING
1.4294 +
1.4295 + // Known modes, by name and by MIME
1.4296 + var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
1.4297 +
1.4298 + // Extra arguments are stored as the mode's dependencies, which is
1.4299 + // used by (legacy) mechanisms like loadmode.js to automatically
1.4300 + // load a mode. (Preferred mechanism is the require/define calls.)
1.4301 + CodeMirror.defineMode = function(name, mode) {
1.4302 + if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
1.4303 + if (arguments.length > 2) {
1.4304 + mode.dependencies = [];
1.4305 + for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
1.4306 + }
1.4307 + modes[name] = mode;
1.4308 + };
1.4309 +
1.4310 + CodeMirror.defineMIME = function(mime, spec) {
1.4311 + mimeModes[mime] = spec;
1.4312 + };
1.4313 +
1.4314 + // Given a MIME type, a {name, ...options} config object, or a name
1.4315 + // string, return a mode config object.
1.4316 + CodeMirror.resolveMode = function(spec) {
1.4317 + if (typeof spec == "string" && mimeModes.hasOwnProperty(spec)) {
1.4318 + spec = mimeModes[spec];
1.4319 + } else if (spec && typeof spec.name == "string" && mimeModes.hasOwnProperty(spec.name)) {
1.4320 + var found = mimeModes[spec.name];
1.4321 + if (typeof found == "string") found = {name: found};
1.4322 + spec = createObj(found, spec);
1.4323 + spec.name = found.name;
1.4324 + } else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec)) {
1.4325 + return CodeMirror.resolveMode("application/xml");
1.4326 + }
1.4327 + if (typeof spec == "string") return {name: spec};
1.4328 + else return spec || {name: "null"};
1.4329 + };
1.4330 +
1.4331 + // Given a mode spec (anything that resolveMode accepts), find and
1.4332 + // initialize an actual mode object.
1.4333 + CodeMirror.getMode = function(options, spec) {
1.4334 + var spec = CodeMirror.resolveMode(spec);
1.4335 + var mfactory = modes[spec.name];
1.4336 + if (!mfactory) return CodeMirror.getMode(options, "text/plain");
1.4337 + var modeObj = mfactory(options, spec);
1.4338 + if (modeExtensions.hasOwnProperty(spec.name)) {
1.4339 + var exts = modeExtensions[spec.name];
1.4340 + for (var prop in exts) {
1.4341 + if (!exts.hasOwnProperty(prop)) continue;
1.4342 + if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
1.4343 + modeObj[prop] = exts[prop];
1.4344 + }
1.4345 + }
1.4346 + modeObj.name = spec.name;
1.4347 + if (spec.helperType) modeObj.helperType = spec.helperType;
1.4348 + if (spec.modeProps) for (var prop in spec.modeProps)
1.4349 + modeObj[prop] = spec.modeProps[prop];
1.4350 +
1.4351 + return modeObj;
1.4352 + };
1.4353 +
1.4354 + // Minimal default mode.
1.4355 + CodeMirror.defineMode("null", function() {
1.4356 + return {token: function(stream) {stream.skipToEnd();}};
1.4357 + });
1.4358 + CodeMirror.defineMIME("text/plain", "null");
1.4359 +
1.4360 + // This can be used to attach properties to mode objects from
1.4361 + // outside the actual mode definition.
1.4362 + var modeExtensions = CodeMirror.modeExtensions = {};
1.4363 + CodeMirror.extendMode = function(mode, properties) {
1.4364 + var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
1.4365 + copyObj(properties, exts);
1.4366 + };
1.4367 +
1.4368 + // EXTENSIONS
1.4369 +
1.4370 + CodeMirror.defineExtension = function(name, func) {
1.4371 + CodeMirror.prototype[name] = func;
1.4372 + };
1.4373 + CodeMirror.defineDocExtension = function(name, func) {
1.4374 + Doc.prototype[name] = func;
1.4375 + };
1.4376 + CodeMirror.defineOption = option;
1.4377 +
1.4378 + var initHooks = [];
1.4379 + CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
1.4380 +
1.4381 + var helpers = CodeMirror.helpers = {};
1.4382 + CodeMirror.registerHelper = function(type, name, value) {
1.4383 + if (!helpers.hasOwnProperty(type)) helpers[type] = CodeMirror[type] = {_global: []};
1.4384 + helpers[type][name] = value;
1.4385 + };
1.4386 + CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
1.4387 + CodeMirror.registerHelper(type, name, value);
1.4388 + helpers[type]._global.push({pred: predicate, val: value});
1.4389 + };
1.4390 +
1.4391 + // MODE STATE HANDLING
1.4392 +
1.4393 + // Utility functions for working with state. Exported because nested
1.4394 + // modes need to do this for their inner modes.
1.4395 +
1.4396 + var copyState = CodeMirror.copyState = function(mode, state) {
1.4397 + if (state === true) return state;
1.4398 + if (mode.copyState) return mode.copyState(state);
1.4399 + var nstate = {};
1.4400 + for (var n in state) {
1.4401 + var val = state[n];
1.4402 + if (val instanceof Array) val = val.concat([]);
1.4403 + nstate[n] = val;
1.4404 + }
1.4405 + return nstate;
1.4406 + };
1.4407 +
1.4408 + var startState = CodeMirror.startState = function(mode, a1, a2) {
1.4409 + return mode.startState ? mode.startState(a1, a2) : true;
1.4410 + };
1.4411 +
1.4412 + // Given a mode and a state (for that mode), find the inner mode and
1.4413 + // state at the position that the state refers to.
1.4414 + CodeMirror.innerMode = function(mode, state) {
1.4415 + while (mode.innerMode) {
1.4416 + var info = mode.innerMode(state);
1.4417 + if (!info || info.mode == mode) break;
1.4418 + state = info.state;
1.4419 + mode = info.mode;
1.4420 + }
1.4421 + return info || {mode: mode, state: state};
1.4422 + };
1.4423 +
1.4424 + // STANDARD COMMANDS
1.4425 +
1.4426 + // Commands are parameter-less actions that can be performed on an
1.4427 + // editor, mostly used for keybindings.
1.4428 + var commands = CodeMirror.commands = {
1.4429 + selectAll: function(cm) {cm.setSelection(Pos(cm.firstLine(), 0), Pos(cm.lastLine()), sel_dontScroll);},
1.4430 + singleSelection: function(cm) {
1.4431 + cm.setSelection(cm.getCursor("anchor"), cm.getCursor("head"), sel_dontScroll);
1.4432 + },
1.4433 + killLine: function(cm) {
1.4434 + deleteNearSelection(cm, function(range) {
1.4435 + if (range.empty()) {
1.4436 + var len = getLine(cm.doc, range.head.line).text.length;
1.4437 + if (range.head.ch == len && range.head.line < cm.lastLine())
1.4438 + return {from: range.head, to: Pos(range.head.line + 1, 0)};
1.4439 + else
1.4440 + return {from: range.head, to: Pos(range.head.line, len)};
1.4441 + } else {
1.4442 + return {from: range.from(), to: range.to()};
1.4443 + }
1.4444 + });
1.4445 + },
1.4446 + deleteLine: function(cm) {
1.4447 + deleteNearSelection(cm, function(range) {
1.4448 + return {from: Pos(range.from().line, 0),
1.4449 + to: clipPos(cm.doc, Pos(range.to().line + 1, 0))};
1.4450 + });
1.4451 + },
1.4452 + delLineLeft: function(cm) {
1.4453 + deleteNearSelection(cm, function(range) {
1.4454 + return {from: Pos(range.from().line, 0), to: range.from()};
1.4455 + });
1.4456 + },
1.4457 + undo: function(cm) {cm.undo();},
1.4458 + redo: function(cm) {cm.redo();},
1.4459 + undoSelection: function(cm) {cm.undoSelection();},
1.4460 + redoSelection: function(cm) {cm.redoSelection();},
1.4461 + goDocStart: function(cm) {cm.extendSelection(Pos(cm.firstLine(), 0));},
1.4462 + goDocEnd: function(cm) {cm.extendSelection(Pos(cm.lastLine()));},
1.4463 + goLineStart: function(cm) {
1.4464 + cm.extendSelectionsBy(function(range) { return lineStart(cm, range.head.line); }, sel_move);
1.4465 + },
1.4466 + goLineStartSmart: function(cm) {
1.4467 + cm.extendSelectionsBy(function(range) {
1.4468 + var start = lineStart(cm, range.head.line);
1.4469 + var line = cm.getLineHandle(start.line);
1.4470 + var order = getOrder(line);
1.4471 + if (!order || order[0].level == 0) {
1.4472 + var firstNonWS = Math.max(0, line.text.search(/\S/));
1.4473 + var inWS = range.head.line == start.line && range.head.ch <= firstNonWS && range.head.ch;
1.4474 + return Pos(start.line, inWS ? 0 : firstNonWS);
1.4475 + }
1.4476 + return start;
1.4477 + }, sel_move);
1.4478 + },
1.4479 + goLineEnd: function(cm) {
1.4480 + cm.extendSelectionsBy(function(range) { return lineEnd(cm, range.head.line); }, sel_move);
1.4481 + },
1.4482 + goLineRight: function(cm) {
1.4483 + cm.extendSelectionsBy(function(range) {
1.4484 + var top = cm.charCoords(range.head, "div").top + 5;
1.4485 + return cm.coordsChar({left: cm.display.lineDiv.offsetWidth + 100, top: top}, "div");
1.4486 + }, sel_move);
1.4487 + },
1.4488 + goLineLeft: function(cm) {
1.4489 + cm.extendSelectionsBy(function(range) {
1.4490 + var top = cm.charCoords(range.head, "div").top + 5;
1.4491 + return cm.coordsChar({left: 0, top: top}, "div");
1.4492 + }, sel_move);
1.4493 + },
1.4494 + goLineUp: function(cm) {cm.moveV(-1, "line");},
1.4495 + goLineDown: function(cm) {cm.moveV(1, "line");},
1.4496 + goPageUp: function(cm) {cm.moveV(-1, "page");},
1.4497 + goPageDown: function(cm) {cm.moveV(1, "page");},
1.4498 + goCharLeft: function(cm) {cm.moveH(-1, "char");},
1.4499 + goCharRight: function(cm) {cm.moveH(1, "char");},
1.4500 + goColumnLeft: function(cm) {cm.moveH(-1, "column");},
1.4501 + goColumnRight: function(cm) {cm.moveH(1, "column");},
1.4502 + goWordLeft: function(cm) {cm.moveH(-1, "word");},
1.4503 + goGroupRight: function(cm) {cm.moveH(1, "group");},
1.4504 + goGroupLeft: function(cm) {cm.moveH(-1, "group");},
1.4505 + goWordRight: function(cm) {cm.moveH(1, "word");},
1.4506 + delCharBefore: function(cm) {cm.deleteH(-1, "char");},
1.4507 + delCharAfter: function(cm) {cm.deleteH(1, "char");},
1.4508 + delWordBefore: function(cm) {cm.deleteH(-1, "word");},
1.4509 + delWordAfter: function(cm) {cm.deleteH(1, "word");},
1.4510 + delGroupBefore: function(cm) {cm.deleteH(-1, "group");},
1.4511 + delGroupAfter: function(cm) {cm.deleteH(1, "group");},
1.4512 + indentAuto: function(cm) {cm.indentSelection("smart");},
1.4513 + indentMore: function(cm) {cm.indentSelection("add");},
1.4514 + indentLess: function(cm) {cm.indentSelection("subtract");},
1.4515 + insertTab: function(cm) {cm.replaceSelection("\t");},
1.4516 + defaultTab: function(cm) {
1.4517 + if (cm.somethingSelected()) cm.indentSelection("add");
1.4518 + else cm.execCommand("insertTab");
1.4519 + },
1.4520 + transposeChars: function(cm) {
1.4521 + runInOp(cm, function() {
1.4522 + var ranges = cm.listSelections();
1.4523 + for (var i = 0; i < ranges.length; i++) {
1.4524 + var cur = ranges[i].head, line = getLine(cm.doc, cur.line).text;
1.4525 + if (cur.ch > 0 && cur.ch < line.length - 1)
1.4526 + cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
1.4527 + Pos(cur.line, cur.ch - 1), Pos(cur.line, cur.ch + 1));
1.4528 + }
1.4529 + });
1.4530 + },
1.4531 + newlineAndIndent: function(cm) {
1.4532 + runInOp(cm, function() {
1.4533 + var len = cm.listSelections().length;
1.4534 + for (var i = 0; i < len; i++) {
1.4535 + var range = cm.listSelections()[i];
1.4536 + cm.replaceRange("\n", range.anchor, range.head, "+input");
1.4537 + cm.indentLine(range.from().line + 1, null, true);
1.4538 + ensureCursorVisible(cm);
1.4539 + }
1.4540 + });
1.4541 + },
1.4542 + toggleOverwrite: function(cm) {cm.toggleOverwrite();}
1.4543 + };
1.4544 +
1.4545 + // STANDARD KEYMAPS
1.4546 +
1.4547 + var keyMap = CodeMirror.keyMap = {};
1.4548 + keyMap.basic = {
1.4549 + "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
1.4550 + "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
1.4551 + "Delete": "delCharAfter", "Backspace": "delCharBefore", "Shift-Backspace": "delCharBefore",
1.4552 + "Tab": "defaultTab", "Shift-Tab": "indentAuto",
1.4553 + "Enter": "newlineAndIndent", "Insert": "toggleOverwrite",
1.4554 + "Esc": "singleSelection"
1.4555 + };
1.4556 + // Note that the save and find-related commands aren't defined by
1.4557 + // default. User code or addons can define them. Unknown commands
1.4558 + // are simply ignored.
1.4559 + keyMap.pcDefault = {
1.4560 + "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
1.4561 + "Ctrl-Home": "goDocStart", "Ctrl-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
1.4562 + "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
1.4563 + "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
1.4564 + "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
1.4565 + "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
1.4566 + "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
1.4567 + fallthrough: "basic"
1.4568 + };
1.4569 + keyMap.macDefault = {
1.4570 + "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
1.4571 + "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goGroupLeft",
1.4572 + "Alt-Right": "goGroupRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delGroupBefore",
1.4573 + "Ctrl-Alt-Backspace": "delGroupAfter", "Alt-Delete": "delGroupAfter", "Cmd-S": "save", "Cmd-F": "find",
1.4574 + "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
1.4575 + "Cmd-[": "indentLess", "Cmd-]": "indentMore", "Cmd-Backspace": "delLineLeft",
1.4576 + "Cmd-U": "undoSelection", "Shift-Cmd-U": "redoSelection",
1.4577 + fallthrough: ["basic", "emacsy"]
1.4578 + };
1.4579 + // Very basic readline/emacs-style bindings, which are standard on Mac.
1.4580 + keyMap.emacsy = {
1.4581 + "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
1.4582 + "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
1.4583 + "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
1.4584 + "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
1.4585 + };
1.4586 + keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
1.4587 +
1.4588 + // KEYMAP DISPATCH
1.4589 +
1.4590 + function getKeyMap(val) {
1.4591 + if (typeof val == "string") return keyMap[val];
1.4592 + else return val;
1.4593 + }
1.4594 +
1.4595 + // Given an array of keymaps and a key name, call handle on any
1.4596 + // bindings found, until that returns a truthy value, at which point
1.4597 + // we consider the key handled. Implements things like binding a key
1.4598 + // to false stopping further handling and keymap fallthrough.
1.4599 + var lookupKey = CodeMirror.lookupKey = function(name, maps, handle) {
1.4600 + function lookup(map) {
1.4601 + map = getKeyMap(map);
1.4602 + var found = map[name];
1.4603 + if (found === false) return "stop";
1.4604 + if (found != null && handle(found)) return true;
1.4605 + if (map.nofallthrough) return "stop";
1.4606 +
1.4607 + var fallthrough = map.fallthrough;
1.4608 + if (fallthrough == null) return false;
1.4609 + if (Object.prototype.toString.call(fallthrough) != "[object Array]")
1.4610 + return lookup(fallthrough);
1.4611 + for (var i = 0; i < fallthrough.length; ++i) {
1.4612 + var done = lookup(fallthrough[i]);
1.4613 + if (done) return done;
1.4614 + }
1.4615 + return false;
1.4616 + }
1.4617 +
1.4618 + for (var i = 0; i < maps.length; ++i) {
1.4619 + var done = lookup(maps[i]);
1.4620 + if (done) return done != "stop";
1.4621 + }
1.4622 + };
1.4623 +
1.4624 + // Modifier key presses don't count as 'real' key presses for the
1.4625 + // purpose of keymap fallthrough.
1.4626 + var isModifierKey = CodeMirror.isModifierKey = function(event) {
1.4627 + var name = keyNames[event.keyCode];
1.4628 + return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
1.4629 + };
1.4630 +
1.4631 + // Look up the name of a key as indicated by an event object.
1.4632 + var keyName = CodeMirror.keyName = function(event, noShift) {
1.4633 + if (presto && event.keyCode == 34 && event["char"]) return false;
1.4634 + var name = keyNames[event.keyCode];
1.4635 + if (name == null || event.altGraphKey) return false;
1.4636 + if (event.altKey) name = "Alt-" + name;
1.4637 + if (flipCtrlCmd ? event.metaKey : event.ctrlKey) name = "Ctrl-" + name;
1.4638 + if (flipCtrlCmd ? event.ctrlKey : event.metaKey) name = "Cmd-" + name;
1.4639 + if (!noShift && event.shiftKey) name = "Shift-" + name;
1.4640 + return name;
1.4641 + };
1.4642 +
1.4643 + // FROMTEXTAREA
1.4644 +
1.4645 + CodeMirror.fromTextArea = function(textarea, options) {
1.4646 + if (!options) options = {};
1.4647 + options.value = textarea.value;
1.4648 + if (!options.tabindex && textarea.tabindex)
1.4649 + options.tabindex = textarea.tabindex;
1.4650 + if (!options.placeholder && textarea.placeholder)
1.4651 + options.placeholder = textarea.placeholder;
1.4652 + // Set autofocus to true if this textarea is focused, or if it has
1.4653 + // autofocus and no other element is focused.
1.4654 + if (options.autofocus == null) {
1.4655 + var hasFocus = activeElt();
1.4656 + options.autofocus = hasFocus == textarea ||
1.4657 + textarea.getAttribute("autofocus") != null && hasFocus == document.body;
1.4658 + }
1.4659 +
1.4660 + function save() {textarea.value = cm.getValue();}
1.4661 + if (textarea.form) {
1.4662 + on(textarea.form, "submit", save);
1.4663 + // Deplorable hack to make the submit method do the right thing.
1.4664 + if (!options.leaveSubmitMethodAlone) {
1.4665 + var form = textarea.form, realSubmit = form.submit;
1.4666 + try {
1.4667 + var wrappedSubmit = form.submit = function() {
1.4668 + save();
1.4669 + form.submit = realSubmit;
1.4670 + form.submit();
1.4671 + form.submit = wrappedSubmit;
1.4672 + };
1.4673 + } catch(e) {}
1.4674 + }
1.4675 + }
1.4676 +
1.4677 + textarea.style.display = "none";
1.4678 + var cm = CodeMirror(function(node) {
1.4679 + textarea.parentNode.insertBefore(node, textarea.nextSibling);
1.4680 + }, options);
1.4681 + cm.save = save;
1.4682 + cm.getTextArea = function() { return textarea; };
1.4683 + cm.toTextArea = function() {
1.4684 + save();
1.4685 + textarea.parentNode.removeChild(cm.getWrapperElement());
1.4686 + textarea.style.display = "";
1.4687 + if (textarea.form) {
1.4688 + off(textarea.form, "submit", save);
1.4689 + if (typeof textarea.form.submit == "function")
1.4690 + textarea.form.submit = realSubmit;
1.4691 + }
1.4692 + };
1.4693 + return cm;
1.4694 + };
1.4695 +
1.4696 + // STRING STREAM
1.4697 +
1.4698 + // Fed to the mode parsers, provides helper functions to make
1.4699 + // parsers more succinct.
1.4700 +
1.4701 + var StringStream = CodeMirror.StringStream = function(string, tabSize) {
1.4702 + this.pos = this.start = 0;
1.4703 + this.string = string;
1.4704 + this.tabSize = tabSize || 8;
1.4705 + this.lastColumnPos = this.lastColumnValue = 0;
1.4706 + this.lineStart = 0;
1.4707 + };
1.4708 +
1.4709 + StringStream.prototype = {
1.4710 + eol: function() {return this.pos >= this.string.length;},
1.4711 + sol: function() {return this.pos == this.lineStart;},
1.4712 + peek: function() {return this.string.charAt(this.pos) || undefined;},
1.4713 + next: function() {
1.4714 + if (this.pos < this.string.length)
1.4715 + return this.string.charAt(this.pos++);
1.4716 + },
1.4717 + eat: function(match) {
1.4718 + var ch = this.string.charAt(this.pos);
1.4719 + if (typeof match == "string") var ok = ch == match;
1.4720 + else var ok = ch && (match.test ? match.test(ch) : match(ch));
1.4721 + if (ok) {++this.pos; return ch;}
1.4722 + },
1.4723 + eatWhile: function(match) {
1.4724 + var start = this.pos;
1.4725 + while (this.eat(match)){}
1.4726 + return this.pos > start;
1.4727 + },
1.4728 + eatSpace: function() {
1.4729 + var start = this.pos;
1.4730 + while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
1.4731 + return this.pos > start;
1.4732 + },
1.4733 + skipToEnd: function() {this.pos = this.string.length;},
1.4734 + skipTo: function(ch) {
1.4735 + var found = this.string.indexOf(ch, this.pos);
1.4736 + if (found > -1) {this.pos = found; return true;}
1.4737 + },
1.4738 + backUp: function(n) {this.pos -= n;},
1.4739 + column: function() {
1.4740 + if (this.lastColumnPos < this.start) {
1.4741 + this.lastColumnValue = countColumn(this.string, this.start, this.tabSize, this.lastColumnPos, this.lastColumnValue);
1.4742 + this.lastColumnPos = this.start;
1.4743 + }
1.4744 + return this.lastColumnValue - (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
1.4745 + },
1.4746 + indentation: function() {
1.4747 + return countColumn(this.string, null, this.tabSize) -
1.4748 + (this.lineStart ? countColumn(this.string, this.lineStart, this.tabSize) : 0);
1.4749 + },
1.4750 + match: function(pattern, consume, caseInsensitive) {
1.4751 + if (typeof pattern == "string") {
1.4752 + var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
1.4753 + var substr = this.string.substr(this.pos, pattern.length);
1.4754 + if (cased(substr) == cased(pattern)) {
1.4755 + if (consume !== false) this.pos += pattern.length;
1.4756 + return true;
1.4757 + }
1.4758 + } else {
1.4759 + var match = this.string.slice(this.pos).match(pattern);
1.4760 + if (match && match.index > 0) return null;
1.4761 + if (match && consume !== false) this.pos += match[0].length;
1.4762 + return match;
1.4763 + }
1.4764 + },
1.4765 + current: function(){return this.string.slice(this.start, this.pos);},
1.4766 + hideFirstChars: function(n, inner) {
1.4767 + this.lineStart += n;
1.4768 + try { return inner(); }
1.4769 + finally { this.lineStart -= n; }
1.4770 + }
1.4771 + };
1.4772 +
1.4773 + // TEXTMARKERS
1.4774 +
1.4775 + // Created with markText and setBookmark methods. A TextMarker is a
1.4776 + // handle that can be used to clear or find a marked position in the
1.4777 + // document. Line objects hold arrays (markedSpans) containing
1.4778 + // {from, to, marker} object pointing to such marker objects, and
1.4779 + // indicating that such a marker is present on that line. Multiple
1.4780 + // lines may point to the same marker when it spans across lines.
1.4781 + // The spans will have null for their from/to properties when the
1.4782 + // marker continues beyond the start/end of the line. Markers have
1.4783 + // links back to the lines they currently touch.
1.4784 +
1.4785 + var TextMarker = CodeMirror.TextMarker = function(doc, type) {
1.4786 + this.lines = [];
1.4787 + this.type = type;
1.4788 + this.doc = doc;
1.4789 + };
1.4790 + eventMixin(TextMarker);
1.4791 +
1.4792 + // Clear the marker.
1.4793 + TextMarker.prototype.clear = function() {
1.4794 + if (this.explicitlyCleared) return;
1.4795 + var cm = this.doc.cm, withOp = cm && !cm.curOp;
1.4796 + if (withOp) startOperation(cm);
1.4797 + if (hasHandler(this, "clear")) {
1.4798 + var found = this.find();
1.4799 + if (found) signalLater(this, "clear", found.from, found.to);
1.4800 + }
1.4801 + var min = null, max = null;
1.4802 + for (var i = 0; i < this.lines.length; ++i) {
1.4803 + var line = this.lines[i];
1.4804 + var span = getMarkedSpanFor(line.markedSpans, this);
1.4805 + if (cm && !this.collapsed) regLineChange(cm, lineNo(line), "text");
1.4806 + else if (cm) {
1.4807 + if (span.to != null) max = lineNo(line);
1.4808 + if (span.from != null) min = lineNo(line);
1.4809 + }
1.4810 + line.markedSpans = removeMarkedSpan(line.markedSpans, span);
1.4811 + if (span.from == null && this.collapsed && !lineIsHidden(this.doc, line) && cm)
1.4812 + updateLineHeight(line, textHeight(cm.display));
1.4813 + }
1.4814 + if (cm && this.collapsed && !cm.options.lineWrapping) for (var i = 0; i < this.lines.length; ++i) {
1.4815 + var visual = visualLine(this.lines[i]), len = lineLength(visual);
1.4816 + if (len > cm.display.maxLineLength) {
1.4817 + cm.display.maxLine = visual;
1.4818 + cm.display.maxLineLength = len;
1.4819 + cm.display.maxLineChanged = true;
1.4820 + }
1.4821 + }
1.4822 +
1.4823 + if (min != null && cm && this.collapsed) regChange(cm, min, max + 1);
1.4824 + this.lines.length = 0;
1.4825 + this.explicitlyCleared = true;
1.4826 + if (this.atomic && this.doc.cantEdit) {
1.4827 + this.doc.cantEdit = false;
1.4828 + if (cm) reCheckSelection(cm.doc);
1.4829 + }
1.4830 + if (cm) signalLater(cm, "markerCleared", cm, this);
1.4831 + if (withOp) endOperation(cm);
1.4832 + };
1.4833 +
1.4834 + // Find the position of the marker in the document. Returns a {from,
1.4835 + // to} object by default. Side can be passed to get a specific side
1.4836 + // -- 0 (both), -1 (left), or 1 (right). When lineObj is true, the
1.4837 + // Pos objects returned contain a line object, rather than a line
1.4838 + // number (used to prevent looking up the same line twice).
1.4839 + TextMarker.prototype.find = function(side, lineObj) {
1.4840 + if (side == null && this.type == "bookmark") side = 1;
1.4841 + var from, to;
1.4842 + for (var i = 0; i < this.lines.length; ++i) {
1.4843 + var line = this.lines[i];
1.4844 + var span = getMarkedSpanFor(line.markedSpans, this);
1.4845 + if (span.from != null) {
1.4846 + from = Pos(lineObj ? line : lineNo(line), span.from);
1.4847 + if (side == -1) return from;
1.4848 + }
1.4849 + if (span.to != null) {
1.4850 + to = Pos(lineObj ? line : lineNo(line), span.to);
1.4851 + if (side == 1) return to;
1.4852 + }
1.4853 + }
1.4854 + return from && {from: from, to: to};
1.4855 + };
1.4856 +
1.4857 + // Signals that the marker's widget changed, and surrounding layout
1.4858 + // should be recomputed.
1.4859 + TextMarker.prototype.changed = function() {
1.4860 + var pos = this.find(-1, true), widget = this, cm = this.doc.cm;
1.4861 + if (!pos || !cm) return;
1.4862 + runInOp(cm, function() {
1.4863 + var line = pos.line, lineN = lineNo(pos.line);
1.4864 + var view = findViewForLine(cm, lineN);
1.4865 + if (view) {
1.4866 + clearLineMeasurementCacheFor(view);
1.4867 + cm.curOp.selectionChanged = cm.curOp.forceUpdate = true;
1.4868 + }
1.4869 + cm.curOp.updateMaxLine = true;
1.4870 + if (!lineIsHidden(widget.doc, line) && widget.height != null) {
1.4871 + var oldHeight = widget.height;
1.4872 + widget.height = null;
1.4873 + var dHeight = widgetHeight(widget) - oldHeight;
1.4874 + if (dHeight)
1.4875 + updateLineHeight(line, line.height + dHeight);
1.4876 + }
1.4877 + });
1.4878 + };
1.4879 +
1.4880 + TextMarker.prototype.attachLine = function(line) {
1.4881 + if (!this.lines.length && this.doc.cm) {
1.4882 + var op = this.doc.cm.curOp;
1.4883 + if (!op.maybeHiddenMarkers || indexOf(op.maybeHiddenMarkers, this) == -1)
1.4884 + (op.maybeUnhiddenMarkers || (op.maybeUnhiddenMarkers = [])).push(this);
1.4885 + }
1.4886 + this.lines.push(line);
1.4887 + };
1.4888 + TextMarker.prototype.detachLine = function(line) {
1.4889 + this.lines.splice(indexOf(this.lines, line), 1);
1.4890 + if (!this.lines.length && this.doc.cm) {
1.4891 + var op = this.doc.cm.curOp;
1.4892 + (op.maybeHiddenMarkers || (op.maybeHiddenMarkers = [])).push(this);
1.4893 + }
1.4894 + };
1.4895 +
1.4896 + // Collapsed markers have unique ids, in order to be able to order
1.4897 + // them, which is needed for uniquely determining an outer marker
1.4898 + // when they overlap (they may nest, but not partially overlap).
1.4899 + var nextMarkerId = 0;
1.4900 +
1.4901 + // Create a marker, wire it up to the right lines, and
1.4902 + function markText(doc, from, to, options, type) {
1.4903 + // Shared markers (across linked documents) are handled separately
1.4904 + // (markTextShared will call out to this again, once per
1.4905 + // document).
1.4906 + if (options && options.shared) return markTextShared(doc, from, to, options, type);
1.4907 + // Ensure we are in an operation.
1.4908 + if (doc.cm && !doc.cm.curOp) return operation(doc.cm, markText)(doc, from, to, options, type);
1.4909 +
1.4910 + var marker = new TextMarker(doc, type), diff = cmp(from, to);
1.4911 + if (options) copyObj(options, marker);
1.4912 + // Don't connect empty markers unless clearWhenEmpty is false
1.4913 + if (diff > 0 || diff == 0 && marker.clearWhenEmpty !== false)
1.4914 + return marker;
1.4915 + if (marker.replacedWith) {
1.4916 + // Showing up as a widget implies collapsed (widget replaces text)
1.4917 + marker.collapsed = true;
1.4918 + marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");
1.4919 + if (!options.handleMouseEvents) marker.widgetNode.ignoreEvents = true;
1.4920 + if (options.insertLeft) marker.widgetNode.insertLeft = true;
1.4921 + }
1.4922 + if (marker.collapsed) {
1.4923 + if (conflictingCollapsedRange(doc, from.line, from, to, marker) ||
1.4924 + from.line != to.line && conflictingCollapsedRange(doc, to.line, from, to, marker))
1.4925 + throw new Error("Inserting collapsed marker partially overlapping an existing one");
1.4926 + sawCollapsedSpans = true;
1.4927 + }
1.4928 +
1.4929 + if (marker.addToHistory)
1.4930 + addChangeToHistory(doc, {from: from, to: to, origin: "markText"}, doc.sel, NaN);
1.4931 +
1.4932 + var curLine = from.line, cm = doc.cm, updateMaxLine;
1.4933 + doc.iter(curLine, to.line + 1, function(line) {
1.4934 + if (cm && marker.collapsed && !cm.options.lineWrapping && visualLine(line) == cm.display.maxLine)
1.4935 + updateMaxLine = true;
1.4936 + if (marker.collapsed && curLine != from.line) updateLineHeight(line, 0);
1.4937 + addMarkedSpan(line, new MarkedSpan(marker,
1.4938 + curLine == from.line ? from.ch : null,
1.4939 + curLine == to.line ? to.ch : null));
1.4940 + ++curLine;
1.4941 + });
1.4942 + // lineIsHidden depends on the presence of the spans, so needs a second pass
1.4943 + if (marker.collapsed) doc.iter(from.line, to.line + 1, function(line) {
1.4944 + if (lineIsHidden(doc, line)) updateLineHeight(line, 0);
1.4945 + });
1.4946 +
1.4947 + if (marker.clearOnEnter) on(marker, "beforeCursorEnter", function() { marker.clear(); });
1.4948 +
1.4949 + if (marker.readOnly) {
1.4950 + sawReadOnlySpans = true;
1.4951 + if (doc.history.done.length || doc.history.undone.length)
1.4952 + doc.clearHistory();
1.4953 + }
1.4954 + if (marker.collapsed) {
1.4955 + marker.id = ++nextMarkerId;
1.4956 + marker.atomic = true;
1.4957 + }
1.4958 + if (cm) {
1.4959 + // Sync editor state
1.4960 + if (updateMaxLine) cm.curOp.updateMaxLine = true;
1.4961 + if (marker.collapsed)
1.4962 + regChange(cm, from.line, to.line + 1);
1.4963 + else if (marker.className || marker.title || marker.startStyle || marker.endStyle)
1.4964 + for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
1.4965 + if (marker.atomic) reCheckSelection(cm.doc);
1.4966 + signalLater(cm, "markerAdded", cm, marker);
1.4967 + }
1.4968 + return marker;
1.4969 + }
1.4970 +
1.4971 + // SHARED TEXTMARKERS
1.4972 +
1.4973 + // A shared marker spans multiple linked documents. It is
1.4974 + // implemented as a meta-marker-object controlling multiple normal
1.4975 + // markers.
1.4976 + var SharedTextMarker = CodeMirror.SharedTextMarker = function(markers, primary) {
1.4977 + this.markers = markers;
1.4978 + this.primary = primary;
1.4979 + for (var i = 0, me = this; i < markers.length; ++i) {
1.4980 + markers[i].parent = this;
1.4981 + on(markers[i], "clear", function(){me.clear();});
1.4982 + }
1.4983 + };
1.4984 + eventMixin(SharedTextMarker);
1.4985 +
1.4986 + SharedTextMarker.prototype.clear = function() {
1.4987 + if (this.explicitlyCleared) return;
1.4988 + this.explicitlyCleared = true;
1.4989 + for (var i = 0; i < this.markers.length; ++i)
1.4990 + this.markers[i].clear();
1.4991 + signalLater(this, "clear");
1.4992 + };
1.4993 + SharedTextMarker.prototype.find = function(side, lineObj) {
1.4994 + return this.primary.find(side, lineObj);
1.4995 + };
1.4996 +
1.4997 + function markTextShared(doc, from, to, options, type) {
1.4998 + options = copyObj(options);
1.4999 + options.shared = false;
1.5000 + var markers = [markText(doc, from, to, options, type)], primary = markers[0];
1.5001 + var widget = options.widgetNode;
1.5002 + linkedDocs(doc, function(doc) {
1.5003 + if (widget) options.widgetNode = widget.cloneNode(true);
1.5004 + markers.push(markText(doc, clipPos(doc, from), clipPos(doc, to), options, type));
1.5005 + for (var i = 0; i < doc.linked.length; ++i)
1.5006 + if (doc.linked[i].isParent) return;
1.5007 + primary = lst(markers);
1.5008 + });
1.5009 + return new SharedTextMarker(markers, primary);
1.5010 + }
1.5011 +
1.5012 + // TEXTMARKER SPANS
1.5013 +
1.5014 + function MarkedSpan(marker, from, to) {
1.5015 + this.marker = marker;
1.5016 + this.from = from; this.to = to;
1.5017 + }
1.5018 +
1.5019 + // Search an array of spans for a span matching the given marker.
1.5020 + function getMarkedSpanFor(spans, marker) {
1.5021 + if (spans) for (var i = 0; i < spans.length; ++i) {
1.5022 + var span = spans[i];
1.5023 + if (span.marker == marker) return span;
1.5024 + }
1.5025 + }
1.5026 + // Remove a span from an array, returning undefined if no spans are
1.5027 + // left (we don't store arrays for lines without spans).
1.5028 + function removeMarkedSpan(spans, span) {
1.5029 + for (var r, i = 0; i < spans.length; ++i)
1.5030 + if (spans[i] != span) (r || (r = [])).push(spans[i]);
1.5031 + return r;
1.5032 + }
1.5033 + // Add a span to a line.
1.5034 + function addMarkedSpan(line, span) {
1.5035 + line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
1.5036 + span.marker.attachLine(line);
1.5037 + }
1.5038 +
1.5039 + // Used for the algorithm that adjusts markers for a change in the
1.5040 + // document. These functions cut an array of spans at a given
1.5041 + // character position, returning an array of remaining chunks (or
1.5042 + // undefined if nothing remains).
1.5043 + function markedSpansBefore(old, startCh, isInsert) {
1.5044 + if (old) for (var i = 0, nw; i < old.length; ++i) {
1.5045 + var span = old[i], marker = span.marker;
1.5046 + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
1.5047 + if (startsBefore || span.from == startCh && marker.type == "bookmark" && (!isInsert || !span.marker.insertLeft)) {
1.5048 + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
1.5049 + (nw || (nw = [])).push(new MarkedSpan(marker, span.from, endsAfter ? null : span.to));
1.5050 + }
1.5051 + }
1.5052 + return nw;
1.5053 + }
1.5054 + function markedSpansAfter(old, endCh, isInsert) {
1.5055 + if (old) for (var i = 0, nw; i < old.length; ++i) {
1.5056 + var span = old[i], marker = span.marker;
1.5057 + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
1.5058 + if (endsAfter || span.from == endCh && marker.type == "bookmark" && (!isInsert || span.marker.insertLeft)) {
1.5059 + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
1.5060 + (nw || (nw = [])).push(new MarkedSpan(marker, startsBefore ? null : span.from - endCh,
1.5061 + span.to == null ? null : span.to - endCh));
1.5062 + }
1.5063 + }
1.5064 + return nw;
1.5065 + }
1.5066 +
1.5067 + // Given a change object, compute the new set of marker spans that
1.5068 + // cover the line in which the change took place. Removes spans
1.5069 + // entirely within the change, reconnects spans belonging to the
1.5070 + // same marker that appear on both sides of the change, and cuts off
1.5071 + // spans partially within the change. Returns an array of span
1.5072 + // arrays with one element for each line in (after) the change.
1.5073 + function stretchSpansOverChange(doc, change) {
1.5074 + var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
1.5075 + var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
1.5076 + if (!oldFirst && !oldLast) return null;
1.5077 +
1.5078 + var startCh = change.from.ch, endCh = change.to.ch, isInsert = cmp(change.from, change.to) == 0;
1.5079 + // Get the spans that 'stick out' on both sides
1.5080 + var first = markedSpansBefore(oldFirst, startCh, isInsert);
1.5081 + var last = markedSpansAfter(oldLast, endCh, isInsert);
1.5082 +
1.5083 + // Next, merge those two ends
1.5084 + var sameLine = change.text.length == 1, offset = lst(change.text).length + (sameLine ? startCh : 0);
1.5085 + if (first) {
1.5086 + // Fix up .to properties of first
1.5087 + for (var i = 0; i < first.length; ++i) {
1.5088 + var span = first[i];
1.5089 + if (span.to == null) {
1.5090 + var found = getMarkedSpanFor(last, span.marker);
1.5091 + if (!found) span.to = startCh;
1.5092 + else if (sameLine) span.to = found.to == null ? null : found.to + offset;
1.5093 + }
1.5094 + }
1.5095 + }
1.5096 + if (last) {
1.5097 + // Fix up .from in last (or move them into first in case of sameLine)
1.5098 + for (var i = 0; i < last.length; ++i) {
1.5099 + var span = last[i];
1.5100 + if (span.to != null) span.to += offset;
1.5101 + if (span.from == null) {
1.5102 + var found = getMarkedSpanFor(first, span.marker);
1.5103 + if (!found) {
1.5104 + span.from = offset;
1.5105 + if (sameLine) (first || (first = [])).push(span);
1.5106 + }
1.5107 + } else {
1.5108 + span.from += offset;
1.5109 + if (sameLine) (first || (first = [])).push(span);
1.5110 + }
1.5111 + }
1.5112 + }
1.5113 + // Make sure we didn't create any zero-length spans
1.5114 + if (first) first = clearEmptySpans(first);
1.5115 + if (last && last != first) last = clearEmptySpans(last);
1.5116 +
1.5117 + var newMarkers = [first];
1.5118 + if (!sameLine) {
1.5119 + // Fill gap with whole-line-spans
1.5120 + var gap = change.text.length - 2, gapMarkers;
1.5121 + if (gap > 0 && first)
1.5122 + for (var i = 0; i < first.length; ++i)
1.5123 + if (first[i].to == null)
1.5124 + (gapMarkers || (gapMarkers = [])).push(new MarkedSpan(first[i].marker, null, null));
1.5125 + for (var i = 0; i < gap; ++i)
1.5126 + newMarkers.push(gapMarkers);
1.5127 + newMarkers.push(last);
1.5128 + }
1.5129 + return newMarkers;
1.5130 + }
1.5131 +
1.5132 + // Remove spans that are empty and don't have a clearWhenEmpty
1.5133 + // option of false.
1.5134 + function clearEmptySpans(spans) {
1.5135 + for (var i = 0; i < spans.length; ++i) {
1.5136 + var span = spans[i];
1.5137 + if (span.from != null && span.from == span.to && span.marker.clearWhenEmpty !== false)
1.5138 + spans.splice(i--, 1);
1.5139 + }
1.5140 + if (!spans.length) return null;
1.5141 + return spans;
1.5142 + }
1.5143 +
1.5144 + // Used for un/re-doing changes from the history. Combines the
1.5145 + // result of computing the existing spans with the set of spans that
1.5146 + // existed in the history (so that deleting around a span and then
1.5147 + // undoing brings back the span).
1.5148 + function mergeOldSpans(doc, change) {
1.5149 + var old = getOldSpans(doc, change);
1.5150 + var stretched = stretchSpansOverChange(doc, change);
1.5151 + if (!old) return stretched;
1.5152 + if (!stretched) return old;
1.5153 +
1.5154 + for (var i = 0; i < old.length; ++i) {
1.5155 + var oldCur = old[i], stretchCur = stretched[i];
1.5156 + if (oldCur && stretchCur) {
1.5157 + spans: for (var j = 0; j < stretchCur.length; ++j) {
1.5158 + var span = stretchCur[j];
1.5159 + for (var k = 0; k < oldCur.length; ++k)
1.5160 + if (oldCur[k].marker == span.marker) continue spans;
1.5161 + oldCur.push(span);
1.5162 + }
1.5163 + } else if (stretchCur) {
1.5164 + old[i] = stretchCur;
1.5165 + }
1.5166 + }
1.5167 + return old;
1.5168 + }
1.5169 +
1.5170 + // Used to 'clip' out readOnly ranges when making a change.
1.5171 + function removeReadOnlyRanges(doc, from, to) {
1.5172 + var markers = null;
1.5173 + doc.iter(from.line, to.line + 1, function(line) {
1.5174 + if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
1.5175 + var mark = line.markedSpans[i].marker;
1.5176 + if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
1.5177 + (markers || (markers = [])).push(mark);
1.5178 + }
1.5179 + });
1.5180 + if (!markers) return null;
1.5181 + var parts = [{from: from, to: to}];
1.5182 + for (var i = 0; i < markers.length; ++i) {
1.5183 + var mk = markers[i], m = mk.find(0);
1.5184 + for (var j = 0; j < parts.length; ++j) {
1.5185 + var p = parts[j];
1.5186 + if (cmp(p.to, m.from) < 0 || cmp(p.from, m.to) > 0) continue;
1.5187 + var newParts = [j, 1], dfrom = cmp(p.from, m.from), dto = cmp(p.to, m.to);
1.5188 + if (dfrom < 0 || !mk.inclusiveLeft && !dfrom)
1.5189 + newParts.push({from: p.from, to: m.from});
1.5190 + if (dto > 0 || !mk.inclusiveRight && !dto)
1.5191 + newParts.push({from: m.to, to: p.to});
1.5192 + parts.splice.apply(parts, newParts);
1.5193 + j += newParts.length - 1;
1.5194 + }
1.5195 + }
1.5196 + return parts;
1.5197 + }
1.5198 +
1.5199 + // Connect or disconnect spans from a line.
1.5200 + function detachMarkedSpans(line) {
1.5201 + var spans = line.markedSpans;
1.5202 + if (!spans) return;
1.5203 + for (var i = 0; i < spans.length; ++i)
1.5204 + spans[i].marker.detachLine(line);
1.5205 + line.markedSpans = null;
1.5206 + }
1.5207 + function attachMarkedSpans(line, spans) {
1.5208 + if (!spans) return;
1.5209 + for (var i = 0; i < spans.length; ++i)
1.5210 + spans[i].marker.attachLine(line);
1.5211 + line.markedSpans = spans;
1.5212 + }
1.5213 +
1.5214 + // Helpers used when computing which overlapping collapsed span
1.5215 + // counts as the larger one.
1.5216 + function extraLeft(marker) { return marker.inclusiveLeft ? -1 : 0; }
1.5217 + function extraRight(marker) { return marker.inclusiveRight ? 1 : 0; }
1.5218 +
1.5219 + // Returns a number indicating which of two overlapping collapsed
1.5220 + // spans is larger (and thus includes the other). Falls back to
1.5221 + // comparing ids when the spans cover exactly the same range.
1.5222 + function compareCollapsedMarkers(a, b) {
1.5223 + var lenDiff = a.lines.length - b.lines.length;
1.5224 + if (lenDiff != 0) return lenDiff;
1.5225 + var aPos = a.find(), bPos = b.find();
1.5226 + var fromCmp = cmp(aPos.from, bPos.from) || extraLeft(a) - extraLeft(b);
1.5227 + if (fromCmp) return -fromCmp;
1.5228 + var toCmp = cmp(aPos.to, bPos.to) || extraRight(a) - extraRight(b);
1.5229 + if (toCmp) return toCmp;
1.5230 + return b.id - a.id;
1.5231 + }
1.5232 +
1.5233 + // Find out whether a line ends or starts in a collapsed span. If
1.5234 + // so, return the marker for that span.
1.5235 + function collapsedSpanAtSide(line, start) {
1.5236 + var sps = sawCollapsedSpans && line.markedSpans, found;
1.5237 + if (sps) for (var sp, i = 0; i < sps.length; ++i) {
1.5238 + sp = sps[i];
1.5239 + if (sp.marker.collapsed && (start ? sp.from : sp.to) == null &&
1.5240 + (!found || compareCollapsedMarkers(found, sp.marker) < 0))
1.5241 + found = sp.marker;
1.5242 + }
1.5243 + return found;
1.5244 + }
1.5245 + function collapsedSpanAtStart(line) { return collapsedSpanAtSide(line, true); }
1.5246 + function collapsedSpanAtEnd(line) { return collapsedSpanAtSide(line, false); }
1.5247 +
1.5248 + // Test whether there exists a collapsed span that partially
1.5249 + // overlaps (covers the start or end, but not both) of a new span.
1.5250 + // Such overlap is not allowed.
1.5251 + function conflictingCollapsedRange(doc, lineNo, from, to, marker) {
1.5252 + var line = getLine(doc, lineNo);
1.5253 + var sps = sawCollapsedSpans && line.markedSpans;
1.5254 + if (sps) for (var i = 0; i < sps.length; ++i) {
1.5255 + var sp = sps[i];
1.5256 + if (!sp.marker.collapsed) continue;
1.5257 + var found = sp.marker.find(0);
1.5258 + var fromCmp = cmp(found.from, from) || extraLeft(sp.marker) - extraLeft(marker);
1.5259 + var toCmp = cmp(found.to, to) || extraRight(sp.marker) - extraRight(marker);
1.5260 + if (fromCmp >= 0 && toCmp <= 0 || fromCmp <= 0 && toCmp >= 0) continue;
1.5261 + if (fromCmp <= 0 && (cmp(found.to, from) || extraRight(sp.marker) - extraLeft(marker)) > 0 ||
1.5262 + fromCmp >= 0 && (cmp(found.from, to) || extraLeft(sp.marker) - extraRight(marker)) < 0)
1.5263 + return true;
1.5264 + }
1.5265 + }
1.5266 +
1.5267 + // A visual line is a line as drawn on the screen. Folding, for
1.5268 + // example, can cause multiple logical lines to appear on the same
1.5269 + // visual line. This finds the start of the visual line that the
1.5270 + // given line is part of (usually that is the line itself).
1.5271 + function visualLine(line) {
1.5272 + var merged;
1.5273 + while (merged = collapsedSpanAtStart(line))
1.5274 + line = merged.find(-1, true).line;
1.5275 + return line;
1.5276 + }
1.5277 +
1.5278 + // Returns an array of logical lines that continue the visual line
1.5279 + // started by the argument, or undefined if there are no such lines.
1.5280 + function visualLineContinued(line) {
1.5281 + var merged, lines;
1.5282 + while (merged = collapsedSpanAtEnd(line)) {
1.5283 + line = merged.find(1, true).line;
1.5284 + (lines || (lines = [])).push(line);
1.5285 + }
1.5286 + return lines;
1.5287 + }
1.5288 +
1.5289 + // Get the line number of the start of the visual line that the
1.5290 + // given line number is part of.
1.5291 + function visualLineNo(doc, lineN) {
1.5292 + var line = getLine(doc, lineN), vis = visualLine(line);
1.5293 + if (line == vis) return lineN;
1.5294 + return lineNo(vis);
1.5295 + }
1.5296 + // Get the line number of the start of the next visual line after
1.5297 + // the given line.
1.5298 + function visualLineEndNo(doc, lineN) {
1.5299 + if (lineN > doc.lastLine()) return lineN;
1.5300 + var line = getLine(doc, lineN), merged;
1.5301 + if (!lineIsHidden(doc, line)) return lineN;
1.5302 + while (merged = collapsedSpanAtEnd(line))
1.5303 + line = merged.find(1, true).line;
1.5304 + return lineNo(line) + 1;
1.5305 + }
1.5306 +
1.5307 + // Compute whether a line is hidden. Lines count as hidden when they
1.5308 + // are part of a visual line that starts with another line, or when
1.5309 + // they are entirely covered by collapsed, non-widget span.
1.5310 + function lineIsHidden(doc, line) {
1.5311 + var sps = sawCollapsedSpans && line.markedSpans;
1.5312 + if (sps) for (var sp, i = 0; i < sps.length; ++i) {
1.5313 + sp = sps[i];
1.5314 + if (!sp.marker.collapsed) continue;
1.5315 + if (sp.from == null) return true;
1.5316 + if (sp.marker.widgetNode) continue;
1.5317 + if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(doc, line, sp))
1.5318 + return true;
1.5319 + }
1.5320 + }
1.5321 + function lineIsHiddenInner(doc, line, span) {
1.5322 + if (span.to == null) {
1.5323 + var end = span.marker.find(1, true);
1.5324 + return lineIsHiddenInner(doc, end.line, getMarkedSpanFor(end.line.markedSpans, span.marker));
1.5325 + }
1.5326 + if (span.marker.inclusiveRight && span.to == line.text.length)
1.5327 + return true;
1.5328 + for (var sp, i = 0; i < line.markedSpans.length; ++i) {
1.5329 + sp = line.markedSpans[i];
1.5330 + if (sp.marker.collapsed && !sp.marker.widgetNode && sp.from == span.to &&
1.5331 + (sp.to == null || sp.to != span.from) &&
1.5332 + (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
1.5333 + lineIsHiddenInner(doc, line, sp)) return true;
1.5334 + }
1.5335 + }
1.5336 +
1.5337 + // LINE WIDGETS
1.5338 +
1.5339 + // Line widgets are block elements displayed above or below a line.
1.5340 +
1.5341 + var LineWidget = CodeMirror.LineWidget = function(cm, node, options) {
1.5342 + if (options) for (var opt in options) if (options.hasOwnProperty(opt))
1.5343 + this[opt] = options[opt];
1.5344 + this.cm = cm;
1.5345 + this.node = node;
1.5346 + };
1.5347 + eventMixin(LineWidget);
1.5348 +
1.5349 + function adjustScrollWhenAboveVisible(cm, line, diff) {
1.5350 + if (heightAtLine(line) < ((cm.curOp && cm.curOp.scrollTop) || cm.doc.scrollTop))
1.5351 + addToScrollPos(cm, null, diff);
1.5352 + }
1.5353 +
1.5354 + LineWidget.prototype.clear = function() {
1.5355 + var cm = this.cm, ws = this.line.widgets, line = this.line, no = lineNo(line);
1.5356 + if (no == null || !ws) return;
1.5357 + for (var i = 0; i < ws.length; ++i) if (ws[i] == this) ws.splice(i--, 1);
1.5358 + if (!ws.length) line.widgets = null;
1.5359 + var height = widgetHeight(this);
1.5360 + runInOp(cm, function() {
1.5361 + adjustScrollWhenAboveVisible(cm, line, -height);
1.5362 + regLineChange(cm, no, "widget");
1.5363 + updateLineHeight(line, Math.max(0, line.height - height));
1.5364 + });
1.5365 + };
1.5366 + LineWidget.prototype.changed = function() {
1.5367 + var oldH = this.height, cm = this.cm, line = this.line;
1.5368 + this.height = null;
1.5369 + var diff = widgetHeight(this) - oldH;
1.5370 + if (!diff) return;
1.5371 + runInOp(cm, function() {
1.5372 + cm.curOp.forceUpdate = true;
1.5373 + adjustScrollWhenAboveVisible(cm, line, diff);
1.5374 + updateLineHeight(line, line.height + diff);
1.5375 + });
1.5376 + };
1.5377 +
1.5378 + function widgetHeight(widget) {
1.5379 + if (widget.height != null) return widget.height;
1.5380 + if (!contains(document.body, widget.node))
1.5381 + removeChildrenAndAdd(widget.cm.display.measure, elt("div", [widget.node], null, "position: relative"));
1.5382 + return widget.height = widget.node.offsetHeight;
1.5383 + }
1.5384 +
1.5385 + function addLineWidget(cm, handle, node, options) {
1.5386 + var widget = new LineWidget(cm, node, options);
1.5387 + if (widget.noHScroll) cm.display.alignWidgets = true;
1.5388 + changeLine(cm, handle, "widget", function(line) {
1.5389 + var widgets = line.widgets || (line.widgets = []);
1.5390 + if (widget.insertAt == null) widgets.push(widget);
1.5391 + else widgets.splice(Math.min(widgets.length - 1, Math.max(0, widget.insertAt)), 0, widget);
1.5392 + widget.line = line;
1.5393 + if (!lineIsHidden(cm.doc, line)) {
1.5394 + var aboveVisible = heightAtLine(line) < cm.doc.scrollTop;
1.5395 + updateLineHeight(line, line.height + widgetHeight(widget));
1.5396 + if (aboveVisible) addToScrollPos(cm, null, widget.height);
1.5397 + cm.curOp.forceUpdate = true;
1.5398 + }
1.5399 + return true;
1.5400 + });
1.5401 + return widget;
1.5402 + }
1.5403 +
1.5404 + // LINE DATA STRUCTURE
1.5405 +
1.5406 + // Line objects. These hold state related to a line, including
1.5407 + // highlighting info (the styles array).
1.5408 + var Line = CodeMirror.Line = function(text, markedSpans, estimateHeight) {
1.5409 + this.text = text;
1.5410 + attachMarkedSpans(this, markedSpans);
1.5411 + this.height = estimateHeight ? estimateHeight(this) : 1;
1.5412 + };
1.5413 + eventMixin(Line);
1.5414 + Line.prototype.lineNo = function() { return lineNo(this); };
1.5415 +
1.5416 + // Change the content (text, markers) of a line. Automatically
1.5417 + // invalidates cached information and tries to re-estimate the
1.5418 + // line's height.
1.5419 + function updateLine(line, text, markedSpans, estimateHeight) {
1.5420 + line.text = text;
1.5421 + if (line.stateAfter) line.stateAfter = null;
1.5422 + if (line.styles) line.styles = null;
1.5423 + if (line.order != null) line.order = null;
1.5424 + detachMarkedSpans(line);
1.5425 + attachMarkedSpans(line, markedSpans);
1.5426 + var estHeight = estimateHeight ? estimateHeight(line) : 1;
1.5427 + if (estHeight != line.height) updateLineHeight(line, estHeight);
1.5428 + }
1.5429 +
1.5430 + // Detach a line from the document tree and its markers.
1.5431 + function cleanUpLine(line) {
1.5432 + line.parent = null;
1.5433 + detachMarkedSpans(line);
1.5434 + }
1.5435 +
1.5436 + // Run the given mode's parser over a line, calling f for each token.
1.5437 + function runMode(cm, text, mode, state, f, forceToEnd) {
1.5438 + var flattenSpans = mode.flattenSpans;
1.5439 + if (flattenSpans == null) flattenSpans = cm.options.flattenSpans;
1.5440 + var curStart = 0, curStyle = null;
1.5441 + var stream = new StringStream(text, cm.options.tabSize), style;
1.5442 + if (text == "" && mode.blankLine) mode.blankLine(state);
1.5443 + while (!stream.eol()) {
1.5444 + if (stream.pos > cm.options.maxHighlightLength) {
1.5445 + flattenSpans = false;
1.5446 + if (forceToEnd) processLine(cm, text, state, stream.pos);
1.5447 + stream.pos = text.length;
1.5448 + style = null;
1.5449 + } else {
1.5450 + style = mode.token(stream, state);
1.5451 + }
1.5452 + if (cm.options.addModeClass) {
1.5453 + var mName = CodeMirror.innerMode(mode, state).mode.name;
1.5454 + if (mName) style = "m-" + (style ? mName + " " + style : mName);
1.5455 + }
1.5456 + if (!flattenSpans || curStyle != style) {
1.5457 + if (curStart < stream.start) f(stream.start, curStyle);
1.5458 + curStart = stream.start; curStyle = style;
1.5459 + }
1.5460 + stream.start = stream.pos;
1.5461 + }
1.5462 + while (curStart < stream.pos) {
1.5463 + // Webkit seems to refuse to render text nodes longer than 57444 characters
1.5464 + var pos = Math.min(stream.pos, curStart + 50000);
1.5465 + f(pos, curStyle);
1.5466 + curStart = pos;
1.5467 + }
1.5468 + }
1.5469 +
1.5470 + // Compute a style array (an array starting with a mode generation
1.5471 + // -- for invalidation -- followed by pairs of end positions and
1.5472 + // style strings), which is used to highlight the tokens on the
1.5473 + // line.
1.5474 + function highlightLine(cm, line, state, forceToEnd) {
1.5475 + // A styles array always starts with a number identifying the
1.5476 + // mode/overlays that it is based on (for easy invalidation).
1.5477 + var st = [cm.state.modeGen];
1.5478 + // Compute the base array of styles
1.5479 + runMode(cm, line.text, cm.doc.mode, state, function(end, style) {
1.5480 + st.push(end, style);
1.5481 + }, forceToEnd);
1.5482 +
1.5483 + // Run overlays, adjust style array.
1.5484 + for (var o = 0; o < cm.state.overlays.length; ++o) {
1.5485 + var overlay = cm.state.overlays[o], i = 1, at = 0;
1.5486 + runMode(cm, line.text, overlay.mode, true, function(end, style) {
1.5487 + var start = i;
1.5488 + // Ensure there's a token end at the current position, and that i points at it
1.5489 + while (at < end) {
1.5490 + var i_end = st[i];
1.5491 + if (i_end > end)
1.5492 + st.splice(i, 1, end, st[i+1], i_end);
1.5493 + i += 2;
1.5494 + at = Math.min(end, i_end);
1.5495 + }
1.5496 + if (!style) return;
1.5497 + if (overlay.opaque) {
1.5498 + st.splice(start, i - start, end, style);
1.5499 + i = start + 2;
1.5500 + } else {
1.5501 + for (; start < i; start += 2) {
1.5502 + var cur = st[start+1];
1.5503 + st[start+1] = cur ? cur + " " + style : style;
1.5504 + }
1.5505 + }
1.5506 + });
1.5507 + }
1.5508 +
1.5509 + return st;
1.5510 + }
1.5511 +
1.5512 + function getLineStyles(cm, line) {
1.5513 + if (!line.styles || line.styles[0] != cm.state.modeGen)
1.5514 + line.styles = highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
1.5515 + return line.styles;
1.5516 + }
1.5517 +
1.5518 + // Lightweight form of highlight -- proceed over this line and
1.5519 + // update state, but don't save a style array. Used for lines that
1.5520 + // aren't currently visible.
1.5521 + function processLine(cm, text, state, startAt) {
1.5522 + var mode = cm.doc.mode;
1.5523 + var stream = new StringStream(text, cm.options.tabSize);
1.5524 + stream.start = stream.pos = startAt || 0;
1.5525 + if (text == "" && mode.blankLine) mode.blankLine(state);
1.5526 + while (!stream.eol() && stream.pos <= cm.options.maxHighlightLength) {
1.5527 + mode.token(stream, state);
1.5528 + stream.start = stream.pos;
1.5529 + }
1.5530 + }
1.5531 +
1.5532 + // Convert a style as returned by a mode (either null, or a string
1.5533 + // containing one or more styles) to a CSS style. This is cached,
1.5534 + // and also looks for line-wide styles.
1.5535 + var styleToClassCache = {}, styleToClassCacheWithMode = {};
1.5536 + function interpretTokenStyle(style, builder) {
1.5537 + if (!style) return null;
1.5538 + for (;;) {
1.5539 + var lineClass = style.match(/(?:^|\s+)line-(background-)?(\S+)/);
1.5540 + if (!lineClass) break;
1.5541 + style = style.slice(0, lineClass.index) + style.slice(lineClass.index + lineClass[0].length);
1.5542 + var prop = lineClass[1] ? "bgClass" : "textClass";
1.5543 + if (builder[prop] == null)
1.5544 + builder[prop] = lineClass[2];
1.5545 + else if (!(new RegExp("(?:^|\s)" + lineClass[2] + "(?:$|\s)")).test(builder[prop]))
1.5546 + builder[prop] += " " + lineClass[2];
1.5547 + }
1.5548 + if (/^\s*$/.test(style)) return null;
1.5549 + var cache = builder.cm.options.addModeClass ? styleToClassCacheWithMode : styleToClassCache;
1.5550 + return cache[style] ||
1.5551 + (cache[style] = style.replace(/\S+/g, "cm-$&"));
1.5552 + }
1.5553 +
1.5554 + // Render the DOM representation of the text of a line. Also builds
1.5555 + // up a 'line map', which points at the DOM nodes that represent
1.5556 + // specific stretches of text, and is used by the measuring code.
1.5557 + // The returned object contains the DOM node, this map, and
1.5558 + // information about line-wide styles that were set by the mode.
1.5559 + function buildLineContent(cm, lineView) {
1.5560 + // The padding-right forces the element to have a 'border', which
1.5561 + // is needed on Webkit to be able to get line-level bounding
1.5562 + // rectangles for it (in measureChar).
1.5563 + var content = elt("span", null, null, webkit ? "padding-right: .1px" : null);
1.5564 + var builder = {pre: elt("pre", [content]), content: content, col: 0, pos: 0, cm: cm};
1.5565 + lineView.measure = {};
1.5566 +
1.5567 + // Iterate over the logical lines that make up this visual line.
1.5568 + for (var i = 0; i <= (lineView.rest ? lineView.rest.length : 0); i++) {
1.5569 + var line = i ? lineView.rest[i - 1] : lineView.line, order;
1.5570 + builder.pos = 0;
1.5571 + builder.addToken = buildToken;
1.5572 + // Optionally wire in some hacks into the token-rendering
1.5573 + // algorithm, to deal with browser quirks.
1.5574 + if ((ie || webkit) && cm.getOption("lineWrapping"))
1.5575 + builder.addToken = buildTokenSplitSpaces(builder.addToken);
1.5576 + if (hasBadBidiRects(cm.display.measure) && (order = getOrder(line)))
1.5577 + builder.addToken = buildTokenBadBidi(builder.addToken, order);
1.5578 + builder.map = [];
1.5579 + insertLineContent(line, builder, getLineStyles(cm, line));
1.5580 +
1.5581 + // Ensure at least a single node is present, for measuring.
1.5582 + if (builder.map.length == 0)
1.5583 + builder.map.push(0, 0, builder.content.appendChild(zeroWidthElement(cm.display.measure)));
1.5584 +
1.5585 + // Store the map and a cache object for the current logical line
1.5586 + if (i == 0) {
1.5587 + lineView.measure.map = builder.map;
1.5588 + lineView.measure.cache = {};
1.5589 + } else {
1.5590 + (lineView.measure.maps || (lineView.measure.maps = [])).push(builder.map);
1.5591 + (lineView.measure.caches || (lineView.measure.caches = [])).push({});
1.5592 + }
1.5593 + }
1.5594 +
1.5595 + signal(cm, "renderLine", cm, lineView.line, builder.pre);
1.5596 + return builder;
1.5597 + }
1.5598 +
1.5599 + function defaultSpecialCharPlaceholder(ch) {
1.5600 + var token = elt("span", "\u2022", "cm-invalidchar");
1.5601 + token.title = "\\u" + ch.charCodeAt(0).toString(16);
1.5602 + return token;
1.5603 + }
1.5604 +
1.5605 + // Build up the DOM representation for a single token, and add it to
1.5606 + // the line map. Takes care to render special characters separately.
1.5607 + function buildToken(builder, text, style, startStyle, endStyle, title) {
1.5608 + if (!text) return;
1.5609 + var special = builder.cm.options.specialChars, mustWrap = false;
1.5610 + if (!special.test(text)) {
1.5611 + builder.col += text.length;
1.5612 + var content = document.createTextNode(text);
1.5613 + builder.map.push(builder.pos, builder.pos + text.length, content);
1.5614 + if (ie_upto8) mustWrap = true;
1.5615 + builder.pos += text.length;
1.5616 + } else {
1.5617 + var content = document.createDocumentFragment(), pos = 0;
1.5618 + while (true) {
1.5619 + special.lastIndex = pos;
1.5620 + var m = special.exec(text);
1.5621 + var skipped = m ? m.index - pos : text.length - pos;
1.5622 + if (skipped) {
1.5623 + var txt = document.createTextNode(text.slice(pos, pos + skipped));
1.5624 + if (ie_upto8) content.appendChild(elt("span", [txt]));
1.5625 + else content.appendChild(txt);
1.5626 + builder.map.push(builder.pos, builder.pos + skipped, txt);
1.5627 + builder.col += skipped;
1.5628 + builder.pos += skipped;
1.5629 + }
1.5630 + if (!m) break;
1.5631 + pos += skipped + 1;
1.5632 + if (m[0] == "\t") {
1.5633 + var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
1.5634 + var txt = content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
1.5635 + builder.col += tabWidth;
1.5636 + } else {
1.5637 + var txt = builder.cm.options.specialCharPlaceholder(m[0]);
1.5638 + if (ie_upto8) content.appendChild(elt("span", [txt]));
1.5639 + else content.appendChild(txt);
1.5640 + builder.col += 1;
1.5641 + }
1.5642 + builder.map.push(builder.pos, builder.pos + 1, txt);
1.5643 + builder.pos++;
1.5644 + }
1.5645 + }
1.5646 + if (style || startStyle || endStyle || mustWrap) {
1.5647 + var fullStyle = style || "";
1.5648 + if (startStyle) fullStyle += startStyle;
1.5649 + if (endStyle) fullStyle += endStyle;
1.5650 + var token = elt("span", [content], fullStyle);
1.5651 + if (title) token.title = title;
1.5652 + return builder.content.appendChild(token);
1.5653 + }
1.5654 + builder.content.appendChild(content);
1.5655 + }
1.5656 +
1.5657 + function buildTokenSplitSpaces(inner) {
1.5658 + function split(old) {
1.5659 + var out = " ";
1.5660 + for (var i = 0; i < old.length - 2; ++i) out += i % 2 ? " " : "\u00a0";
1.5661 + out += " ";
1.5662 + return out;
1.5663 + }
1.5664 + return function(builder, text, style, startStyle, endStyle, title) {
1.5665 + inner(builder, text.replace(/ {3,}/g, split), style, startStyle, endStyle, title);
1.5666 + };
1.5667 + }
1.5668 +
1.5669 + // Work around nonsense dimensions being reported for stretches of
1.5670 + // right-to-left text.
1.5671 + function buildTokenBadBidi(inner, order) {
1.5672 + return function(builder, text, style, startStyle, endStyle, title) {
1.5673 + style = style ? style + " cm-force-border" : "cm-force-border";
1.5674 + var start = builder.pos, end = start + text.length;
1.5675 + for (;;) {
1.5676 + // Find the part that overlaps with the start of this text
1.5677 + for (var i = 0; i < order.length; i++) {
1.5678 + var part = order[i];
1.5679 + if (part.to > start && part.from <= start) break;
1.5680 + }
1.5681 + if (part.to >= end) return inner(builder, text, style, startStyle, endStyle, title);
1.5682 + inner(builder, text.slice(0, part.to - start), style, startStyle, null, title);
1.5683 + startStyle = null;
1.5684 + text = text.slice(part.to - start);
1.5685 + start = part.to;
1.5686 + }
1.5687 + };
1.5688 + }
1.5689 +
1.5690 + function buildCollapsedSpan(builder, size, marker, ignoreWidget) {
1.5691 + var widget = !ignoreWidget && marker.widgetNode;
1.5692 + if (widget) {
1.5693 + builder.map.push(builder.pos, builder.pos + size, widget);
1.5694 + builder.content.appendChild(widget);
1.5695 + }
1.5696 + builder.pos += size;
1.5697 + }
1.5698 +
1.5699 + // Outputs a number of spans to make up a line, taking highlighting
1.5700 + // and marked text into account.
1.5701 + function insertLineContent(line, builder, styles) {
1.5702 + var spans = line.markedSpans, allText = line.text, at = 0;
1.5703 + if (!spans) {
1.5704 + for (var i = 1; i < styles.length; i+=2)
1.5705 + builder.addToken(builder, allText.slice(at, at = styles[i]), interpretTokenStyle(styles[i+1], builder));
1.5706 + return;
1.5707 + }
1.5708 +
1.5709 + var len = allText.length, pos = 0, i = 1, text = "", style;
1.5710 + var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, title, collapsed;
1.5711 + for (;;) {
1.5712 + if (nextChange == pos) { // Update current marker set
1.5713 + spanStyle = spanEndStyle = spanStartStyle = title = "";
1.5714 + collapsed = null; nextChange = Infinity;
1.5715 + var foundBookmarks = [];
1.5716 + for (var j = 0; j < spans.length; ++j) {
1.5717 + var sp = spans[j], m = sp.marker;
1.5718 + if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
1.5719 + if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
1.5720 + if (m.className) spanStyle += " " + m.className;
1.5721 + if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
1.5722 + if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
1.5723 + if (m.title && !title) title = m.title;
1.5724 + if (m.collapsed && (!collapsed || compareCollapsedMarkers(collapsed.marker, m) < 0))
1.5725 + collapsed = sp;
1.5726 + } else if (sp.from > pos && nextChange > sp.from) {
1.5727 + nextChange = sp.from;
1.5728 + }
1.5729 + if (m.type == "bookmark" && sp.from == pos && m.widgetNode) foundBookmarks.push(m);
1.5730 + }
1.5731 + if (collapsed && (collapsed.from || 0) == pos) {
1.5732 + buildCollapsedSpan(builder, (collapsed.to == null ? len + 1 : collapsed.to) - pos,
1.5733 + collapsed.marker, collapsed.from == null);
1.5734 + if (collapsed.to == null) return;
1.5735 + }
1.5736 + if (!collapsed && foundBookmarks.length) for (var j = 0; j < foundBookmarks.length; ++j)
1.5737 + buildCollapsedSpan(builder, 0, foundBookmarks[j]);
1.5738 + }
1.5739 + if (pos >= len) break;
1.5740 +
1.5741 + var upto = Math.min(len, nextChange);
1.5742 + while (true) {
1.5743 + if (text) {
1.5744 + var end = pos + text.length;
1.5745 + if (!collapsed) {
1.5746 + var tokenText = end > upto ? text.slice(0, upto - pos) : text;
1.5747 + builder.addToken(builder, tokenText, style ? style + spanStyle : spanStyle,
1.5748 + spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "", title);
1.5749 + }
1.5750 + if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
1.5751 + pos = end;
1.5752 + spanStartStyle = "";
1.5753 + }
1.5754 + text = allText.slice(at, at = styles[i++]);
1.5755 + style = interpretTokenStyle(styles[i++], builder);
1.5756 + }
1.5757 + }
1.5758 + }
1.5759 +
1.5760 + // DOCUMENT DATA STRUCTURE
1.5761 +
1.5762 + // By default, updates that start and end at the beginning of a line
1.5763 + // are treated specially, in order to make the association of line
1.5764 + // widgets and marker elements with the text behave more intuitive.
1.5765 + function isWholeLineUpdate(doc, change) {
1.5766 + return change.from.ch == 0 && change.to.ch == 0 && lst(change.text) == "" &&
1.5767 + (!doc.cm || doc.cm.options.wholeLineUpdateBefore);
1.5768 + }
1.5769 +
1.5770 + // Perform a change on the document data structure.
1.5771 + function updateDoc(doc, change, markedSpans, estimateHeight) {
1.5772 + function spansFor(n) {return markedSpans ? markedSpans[n] : null;}
1.5773 + function update(line, text, spans) {
1.5774 + updateLine(line, text, spans, estimateHeight);
1.5775 + signalLater(line, "change", line, change);
1.5776 + }
1.5777 +
1.5778 + var from = change.from, to = change.to, text = change.text;
1.5779 + var firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
1.5780 + var lastText = lst(text), lastSpans = spansFor(text.length - 1), nlines = to.line - from.line;
1.5781 +
1.5782 + // Adjust the line structure
1.5783 + if (isWholeLineUpdate(doc, change)) {
1.5784 + // This is a whole-line replace. Treated specially to make
1.5785 + // sure line objects move the way they are supposed to.
1.5786 + for (var i = 0, added = []; i < text.length - 1; ++i)
1.5787 + added.push(new Line(text[i], spansFor(i), estimateHeight));
1.5788 + update(lastLine, lastLine.text, lastSpans);
1.5789 + if (nlines) doc.remove(from.line, nlines);
1.5790 + if (added.length) doc.insert(from.line, added);
1.5791 + } else if (firstLine == lastLine) {
1.5792 + if (text.length == 1) {
1.5793 + update(firstLine, firstLine.text.slice(0, from.ch) + lastText + firstLine.text.slice(to.ch), lastSpans);
1.5794 + } else {
1.5795 + for (var added = [], i = 1; i < text.length - 1; ++i)
1.5796 + added.push(new Line(text[i], spansFor(i), estimateHeight));
1.5797 + added.push(new Line(lastText + firstLine.text.slice(to.ch), lastSpans, estimateHeight));
1.5798 + update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
1.5799 + doc.insert(from.line + 1, added);
1.5800 + }
1.5801 + } else if (text.length == 1) {
1.5802 + update(firstLine, firstLine.text.slice(0, from.ch) + text[0] + lastLine.text.slice(to.ch), spansFor(0));
1.5803 + doc.remove(from.line + 1, nlines);
1.5804 + } else {
1.5805 + update(firstLine, firstLine.text.slice(0, from.ch) + text[0], spansFor(0));
1.5806 + update(lastLine, lastText + lastLine.text.slice(to.ch), lastSpans);
1.5807 + for (var i = 1, added = []; i < text.length - 1; ++i)
1.5808 + added.push(new Line(text[i], spansFor(i), estimateHeight));
1.5809 + if (nlines > 1) doc.remove(from.line + 1, nlines - 1);
1.5810 + doc.insert(from.line + 1, added);
1.5811 + }
1.5812 +
1.5813 + signalLater(doc, "change", doc, change);
1.5814 + }
1.5815 +
1.5816 + // The document is represented as a BTree consisting of leaves, with
1.5817 + // chunk of lines in them, and branches, with up to ten leaves or
1.5818 + // other branch nodes below them. The top node is always a branch
1.5819 + // node, and is the document object itself (meaning it has
1.5820 + // additional methods and properties).
1.5821 + //
1.5822 + // All nodes have parent links. The tree is used both to go from
1.5823 + // line numbers to line objects, and to go from objects to numbers.
1.5824 + // It also indexes by height, and is used to convert between height
1.5825 + // and line object, and to find the total height of the document.
1.5826 + //
1.5827 + // See also http://marijnhaverbeke.nl/blog/codemirror-line-tree.html
1.5828 +
1.5829 + function LeafChunk(lines) {
1.5830 + this.lines = lines;
1.5831 + this.parent = null;
1.5832 + for (var i = 0, height = 0; i < lines.length; ++i) {
1.5833 + lines[i].parent = this;
1.5834 + height += lines[i].height;
1.5835 + }
1.5836 + this.height = height;
1.5837 + }
1.5838 +
1.5839 + LeafChunk.prototype = {
1.5840 + chunkSize: function() { return this.lines.length; },
1.5841 + // Remove the n lines at offset 'at'.
1.5842 + removeInner: function(at, n) {
1.5843 + for (var i = at, e = at + n; i < e; ++i) {
1.5844 + var line = this.lines[i];
1.5845 + this.height -= line.height;
1.5846 + cleanUpLine(line);
1.5847 + signalLater(line, "delete");
1.5848 + }
1.5849 + this.lines.splice(at, n);
1.5850 + },
1.5851 + // Helper used to collapse a small branch into a single leaf.
1.5852 + collapse: function(lines) {
1.5853 + lines.push.apply(lines, this.lines);
1.5854 + },
1.5855 + // Insert the given array of lines at offset 'at', count them as
1.5856 + // having the given height.
1.5857 + insertInner: function(at, lines, height) {
1.5858 + this.height += height;
1.5859 + this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
1.5860 + for (var i = 0; i < lines.length; ++i) lines[i].parent = this;
1.5861 + },
1.5862 + // Used to iterate over a part of the tree.
1.5863 + iterN: function(at, n, op) {
1.5864 + for (var e = at + n; at < e; ++at)
1.5865 + if (op(this.lines[at])) return true;
1.5866 + }
1.5867 + };
1.5868 +
1.5869 + function BranchChunk(children) {
1.5870 + this.children = children;
1.5871 + var size = 0, height = 0;
1.5872 + for (var i = 0; i < children.length; ++i) {
1.5873 + var ch = children[i];
1.5874 + size += ch.chunkSize(); height += ch.height;
1.5875 + ch.parent = this;
1.5876 + }
1.5877 + this.size = size;
1.5878 + this.height = height;
1.5879 + this.parent = null;
1.5880 + }
1.5881 +
1.5882 + BranchChunk.prototype = {
1.5883 + chunkSize: function() { return this.size; },
1.5884 + removeInner: function(at, n) {
1.5885 + this.size -= n;
1.5886 + for (var i = 0; i < this.children.length; ++i) {
1.5887 + var child = this.children[i], sz = child.chunkSize();
1.5888 + if (at < sz) {
1.5889 + var rm = Math.min(n, sz - at), oldHeight = child.height;
1.5890 + child.removeInner(at, rm);
1.5891 + this.height -= oldHeight - child.height;
1.5892 + if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
1.5893 + if ((n -= rm) == 0) break;
1.5894 + at = 0;
1.5895 + } else at -= sz;
1.5896 + }
1.5897 + // If the result is smaller than 25 lines, ensure that it is a
1.5898 + // single leaf node.
1.5899 + if (this.size - n < 25 &&
1.5900 + (this.children.length > 1 || !(this.children[0] instanceof LeafChunk))) {
1.5901 + var lines = [];
1.5902 + this.collapse(lines);
1.5903 + this.children = [new LeafChunk(lines)];
1.5904 + this.children[0].parent = this;
1.5905 + }
1.5906 + },
1.5907 + collapse: function(lines) {
1.5908 + for (var i = 0; i < this.children.length; ++i) this.children[i].collapse(lines);
1.5909 + },
1.5910 + insertInner: function(at, lines, height) {
1.5911 + this.size += lines.length;
1.5912 + this.height += height;
1.5913 + for (var i = 0; i < this.children.length; ++i) {
1.5914 + var child = this.children[i], sz = child.chunkSize();
1.5915 + if (at <= sz) {
1.5916 + child.insertInner(at, lines, height);
1.5917 + if (child.lines && child.lines.length > 50) {
1.5918 + while (child.lines.length > 50) {
1.5919 + var spilled = child.lines.splice(child.lines.length - 25, 25);
1.5920 + var newleaf = new LeafChunk(spilled);
1.5921 + child.height -= newleaf.height;
1.5922 + this.children.splice(i + 1, 0, newleaf);
1.5923 + newleaf.parent = this;
1.5924 + }
1.5925 + this.maybeSpill();
1.5926 + }
1.5927 + break;
1.5928 + }
1.5929 + at -= sz;
1.5930 + }
1.5931 + },
1.5932 + // When a node has grown, check whether it should be split.
1.5933 + maybeSpill: function() {
1.5934 + if (this.children.length <= 10) return;
1.5935 + var me = this;
1.5936 + do {
1.5937 + var spilled = me.children.splice(me.children.length - 5, 5);
1.5938 + var sibling = new BranchChunk(spilled);
1.5939 + if (!me.parent) { // Become the parent node
1.5940 + var copy = new BranchChunk(me.children);
1.5941 + copy.parent = me;
1.5942 + me.children = [copy, sibling];
1.5943 + me = copy;
1.5944 + } else {
1.5945 + me.size -= sibling.size;
1.5946 + me.height -= sibling.height;
1.5947 + var myIndex = indexOf(me.parent.children, me);
1.5948 + me.parent.children.splice(myIndex + 1, 0, sibling);
1.5949 + }
1.5950 + sibling.parent = me.parent;
1.5951 + } while (me.children.length > 10);
1.5952 + me.parent.maybeSpill();
1.5953 + },
1.5954 + iterN: function(at, n, op) {
1.5955 + for (var i = 0; i < this.children.length; ++i) {
1.5956 + var child = this.children[i], sz = child.chunkSize();
1.5957 + if (at < sz) {
1.5958 + var used = Math.min(n, sz - at);
1.5959 + if (child.iterN(at, used, op)) return true;
1.5960 + if ((n -= used) == 0) break;
1.5961 + at = 0;
1.5962 + } else at -= sz;
1.5963 + }
1.5964 + }
1.5965 + };
1.5966 +
1.5967 + var nextDocId = 0;
1.5968 + var Doc = CodeMirror.Doc = function(text, mode, firstLine) {
1.5969 + if (!(this instanceof Doc)) return new Doc(text, mode, firstLine);
1.5970 + if (firstLine == null) firstLine = 0;
1.5971 +
1.5972 + BranchChunk.call(this, [new LeafChunk([new Line("", null)])]);
1.5973 + this.first = firstLine;
1.5974 + this.scrollTop = this.scrollLeft = 0;
1.5975 + this.cantEdit = false;
1.5976 + this.cleanGeneration = 1;
1.5977 + this.frontier = firstLine;
1.5978 + var start = Pos(firstLine, 0);
1.5979 + this.sel = simpleSelection(start);
1.5980 + this.history = new History(null);
1.5981 + this.id = ++nextDocId;
1.5982 + this.modeOption = mode;
1.5983 +
1.5984 + if (typeof text == "string") text = splitLines(text);
1.5985 + updateDoc(this, {from: start, to: start, text: text});
1.5986 + setSelection(this, simpleSelection(start), sel_dontScroll);
1.5987 + };
1.5988 +
1.5989 + Doc.prototype = createObj(BranchChunk.prototype, {
1.5990 + constructor: Doc,
1.5991 + // Iterate over the document. Supports two forms -- with only one
1.5992 + // argument, it calls that for each line in the document. With
1.5993 + // three, it iterates over the range given by the first two (with
1.5994 + // the second being non-inclusive).
1.5995 + iter: function(from, to, op) {
1.5996 + if (op) this.iterN(from - this.first, to - from, op);
1.5997 + else this.iterN(this.first, this.first + this.size, from);
1.5998 + },
1.5999 +
1.6000 + // Non-public interface for adding and removing lines.
1.6001 + insert: function(at, lines) {
1.6002 + var height = 0;
1.6003 + for (var i = 0; i < lines.length; ++i) height += lines[i].height;
1.6004 + this.insertInner(at - this.first, lines, height);
1.6005 + },
1.6006 + remove: function(at, n) { this.removeInner(at - this.first, n); },
1.6007 +
1.6008 + // From here, the methods are part of the public interface. Most
1.6009 + // are also available from CodeMirror (editor) instances.
1.6010 +
1.6011 + getValue: function(lineSep) {
1.6012 + var lines = getLines(this, this.first, this.first + this.size);
1.6013 + if (lineSep === false) return lines;
1.6014 + return lines.join(lineSep || "\n");
1.6015 + },
1.6016 + setValue: docMethodOp(function(code) {
1.6017 + var top = Pos(this.first, 0), last = this.first + this.size - 1;
1.6018 + makeChange(this, {from: top, to: Pos(last, getLine(this, last).text.length),
1.6019 + text: splitLines(code), origin: "setValue"}, true);
1.6020 + setSelection(this, simpleSelection(top));
1.6021 + }),
1.6022 + replaceRange: function(code, from, to, origin) {
1.6023 + from = clipPos(this, from);
1.6024 + to = to ? clipPos(this, to) : from;
1.6025 + replaceRange(this, code, from, to, origin);
1.6026 + },
1.6027 + getRange: function(from, to, lineSep) {
1.6028 + var lines = getBetween(this, clipPos(this, from), clipPos(this, to));
1.6029 + if (lineSep === false) return lines;
1.6030 + return lines.join(lineSep || "\n");
1.6031 + },
1.6032 +
1.6033 + getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
1.6034 +
1.6035 + getLineHandle: function(line) {if (isLine(this, line)) return getLine(this, line);},
1.6036 + getLineNumber: function(line) {return lineNo(line);},
1.6037 +
1.6038 + getLineHandleVisualStart: function(line) {
1.6039 + if (typeof line == "number") line = getLine(this, line);
1.6040 + return visualLine(line);
1.6041 + },
1.6042 +
1.6043 + lineCount: function() {return this.size;},
1.6044 + firstLine: function() {return this.first;},
1.6045 + lastLine: function() {return this.first + this.size - 1;},
1.6046 +
1.6047 + clipPos: function(pos) {return clipPos(this, pos);},
1.6048 +
1.6049 + getCursor: function(start) {
1.6050 + var range = this.sel.primary(), pos;
1.6051 + if (start == null || start == "head") pos = range.head;
1.6052 + else if (start == "anchor") pos = range.anchor;
1.6053 + else if (start == "end" || start == "to" || start === false) pos = range.to();
1.6054 + else pos = range.from();
1.6055 + return pos;
1.6056 + },
1.6057 + listSelections: function() { return this.sel.ranges; },
1.6058 + somethingSelected: function() {return this.sel.somethingSelected();},
1.6059 +
1.6060 + setCursor: docMethodOp(function(line, ch, options) {
1.6061 + setSimpleSelection(this, clipPos(this, typeof line == "number" ? Pos(line, ch || 0) : line), null, options);
1.6062 + }),
1.6063 + setSelection: docMethodOp(function(anchor, head, options) {
1.6064 + setSimpleSelection(this, clipPos(this, anchor), clipPos(this, head || anchor), options);
1.6065 + }),
1.6066 + extendSelection: docMethodOp(function(head, other, options) {
1.6067 + extendSelection(this, clipPos(this, head), other && clipPos(this, other), options);
1.6068 + }),
1.6069 + extendSelections: docMethodOp(function(heads, options) {
1.6070 + extendSelections(this, clipPosArray(this, heads, options));
1.6071 + }),
1.6072 + extendSelectionsBy: docMethodOp(function(f, options) {
1.6073 + extendSelections(this, map(this.sel.ranges, f), options);
1.6074 + }),
1.6075 + setSelections: docMethodOp(function(ranges, primary, options) {
1.6076 + if (!ranges.length) return;
1.6077 + for (var i = 0, out = []; i < ranges.length; i++)
1.6078 + out[i] = new Range(clipPos(this, ranges[i].anchor),
1.6079 + clipPos(this, ranges[i].head));
1.6080 + if (primary == null) primary = Math.min(ranges.length - 1, this.sel.primIndex);
1.6081 + setSelection(this, normalizeSelection(out, primary), options);
1.6082 + }),
1.6083 + addSelection: docMethodOp(function(anchor, head, options) {
1.6084 + var ranges = this.sel.ranges.slice(0);
1.6085 + ranges.push(new Range(clipPos(this, anchor), clipPos(this, head || anchor)));
1.6086 + setSelection(this, normalizeSelection(ranges, ranges.length - 1), options);
1.6087 + }),
1.6088 +
1.6089 + getSelection: function(lineSep) {
1.6090 + var ranges = this.sel.ranges, lines;
1.6091 + for (var i = 0; i < ranges.length; i++) {
1.6092 + var sel = getBetween(this, ranges[i].from(), ranges[i].to());
1.6093 + lines = lines ? lines.concat(sel) : sel;
1.6094 + }
1.6095 + if (lineSep === false) return lines;
1.6096 + else return lines.join(lineSep || "\n");
1.6097 + },
1.6098 + getSelections: function(lineSep) {
1.6099 + var parts = [], ranges = this.sel.ranges;
1.6100 + for (var i = 0; i < ranges.length; i++) {
1.6101 + var sel = getBetween(this, ranges[i].from(), ranges[i].to());
1.6102 + if (lineSep !== false) sel = sel.join(lineSep || "\n");
1.6103 + parts[i] = sel;
1.6104 + }
1.6105 + return parts;
1.6106 + },
1.6107 + replaceSelection: docMethodOp(function(code, collapse, origin) {
1.6108 + var dup = [];
1.6109 + for (var i = 0; i < this.sel.ranges.length; i++)
1.6110 + dup[i] = code;
1.6111 + this.replaceSelections(dup, collapse, origin || "+input");
1.6112 + }),
1.6113 + replaceSelections: function(code, collapse, origin) {
1.6114 + var changes = [], sel = this.sel;
1.6115 + for (var i = 0; i < sel.ranges.length; i++) {
1.6116 + var range = sel.ranges[i];
1.6117 + changes[i] = {from: range.from(), to: range.to(), text: splitLines(code[i]), origin: origin};
1.6118 + }
1.6119 + var newSel = collapse && collapse != "end" && computeReplacedSel(this, changes, collapse);
1.6120 + for (var i = changes.length - 1; i >= 0; i--)
1.6121 + makeChange(this, changes[i]);
1.6122 + if (newSel) setSelectionReplaceHistory(this, newSel);
1.6123 + else if (this.cm) ensureCursorVisible(this.cm);
1.6124 + },
1.6125 + undo: docMethodOp(function() {makeChangeFromHistory(this, "undo");}),
1.6126 + redo: docMethodOp(function() {makeChangeFromHistory(this, "redo");}),
1.6127 + undoSelection: docMethodOp(function() {makeChangeFromHistory(this, "undo", true);}),
1.6128 + redoSelection: docMethodOp(function() {makeChangeFromHistory(this, "redo", true);}),
1.6129 +
1.6130 + setExtending: function(val) {this.extend = val;},
1.6131 + getExtending: function() {return this.extend;},
1.6132 +
1.6133 + historySize: function() {
1.6134 + var hist = this.history, done = 0, undone = 0;
1.6135 + for (var i = 0; i < hist.done.length; i++) if (!hist.done[i].ranges) ++done;
1.6136 + for (var i = 0; i < hist.undone.length; i++) if (!hist.undone[i].ranges) ++undone;
1.6137 + return {undo: done, redo: undone};
1.6138 + },
1.6139 + clearHistory: function() {this.history = new History(this.history.maxGeneration);},
1.6140 +
1.6141 + markClean: function() {
1.6142 + this.cleanGeneration = this.changeGeneration(true);
1.6143 + },
1.6144 + changeGeneration: function(forceSplit) {
1.6145 + if (forceSplit)
1.6146 + this.history.lastOp = this.history.lastOrigin = null;
1.6147 + return this.history.generation;
1.6148 + },
1.6149 + isClean: function (gen) {
1.6150 + return this.history.generation == (gen || this.cleanGeneration);
1.6151 + },
1.6152 +
1.6153 + getHistory: function() {
1.6154 + return {done: copyHistoryArray(this.history.done),
1.6155 + undone: copyHistoryArray(this.history.undone)};
1.6156 + },
1.6157 + setHistory: function(histData) {
1.6158 + var hist = this.history = new History(this.history.maxGeneration);
1.6159 + hist.done = copyHistoryArray(histData.done.slice(0), null, true);
1.6160 + hist.undone = copyHistoryArray(histData.undone.slice(0), null, true);
1.6161 + },
1.6162 +
1.6163 + markText: function(from, to, options) {
1.6164 + return markText(this, clipPos(this, from), clipPos(this, to), options, "range");
1.6165 + },
1.6166 + setBookmark: function(pos, options) {
1.6167 + var realOpts = {replacedWith: options && (options.nodeType == null ? options.widget : options),
1.6168 + insertLeft: options && options.insertLeft,
1.6169 + clearWhenEmpty: false, shared: options && options.shared};
1.6170 + pos = clipPos(this, pos);
1.6171 + return markText(this, pos, pos, realOpts, "bookmark");
1.6172 + },
1.6173 + findMarksAt: function(pos) {
1.6174 + pos = clipPos(this, pos);
1.6175 + var markers = [], spans = getLine(this, pos.line).markedSpans;
1.6176 + if (spans) for (var i = 0; i < spans.length; ++i) {
1.6177 + var span = spans[i];
1.6178 + if ((span.from == null || span.from <= pos.ch) &&
1.6179 + (span.to == null || span.to >= pos.ch))
1.6180 + markers.push(span.marker.parent || span.marker);
1.6181 + }
1.6182 + return markers;
1.6183 + },
1.6184 + findMarks: function(from, to) {
1.6185 + from = clipPos(this, from); to = clipPos(this, to);
1.6186 + var found = [], lineNo = from.line;
1.6187 + this.iter(from.line, to.line + 1, function(line) {
1.6188 + var spans = line.markedSpans;
1.6189 + if (spans) for (var i = 0; i < spans.length; i++) {
1.6190 + var span = spans[i];
1.6191 + if (!(lineNo == from.line && from.ch > span.to ||
1.6192 + span.from == null && lineNo != from.line||
1.6193 + lineNo == to.line && span.from > to.ch))
1.6194 + found.push(span.marker.parent || span.marker);
1.6195 + }
1.6196 + ++lineNo;
1.6197 + });
1.6198 + return found;
1.6199 + },
1.6200 + getAllMarks: function() {
1.6201 + var markers = [];
1.6202 + this.iter(function(line) {
1.6203 + var sps = line.markedSpans;
1.6204 + if (sps) for (var i = 0; i < sps.length; ++i)
1.6205 + if (sps[i].from != null) markers.push(sps[i].marker);
1.6206 + });
1.6207 + return markers;
1.6208 + },
1.6209 +
1.6210 + posFromIndex: function(off) {
1.6211 + var ch, lineNo = this.first;
1.6212 + this.iter(function(line) {
1.6213 + var sz = line.text.length + 1;
1.6214 + if (sz > off) { ch = off; return true; }
1.6215 + off -= sz;
1.6216 + ++lineNo;
1.6217 + });
1.6218 + return clipPos(this, Pos(lineNo, ch));
1.6219 + },
1.6220 + indexFromPos: function (coords) {
1.6221 + coords = clipPos(this, coords);
1.6222 + var index = coords.ch;
1.6223 + if (coords.line < this.first || coords.ch < 0) return 0;
1.6224 + this.iter(this.first, coords.line, function (line) {
1.6225 + index += line.text.length + 1;
1.6226 + });
1.6227 + return index;
1.6228 + },
1.6229 +
1.6230 + copy: function(copyHistory) {
1.6231 + var doc = new Doc(getLines(this, this.first, this.first + this.size), this.modeOption, this.first);
1.6232 + doc.scrollTop = this.scrollTop; doc.scrollLeft = this.scrollLeft;
1.6233 + doc.sel = this.sel;
1.6234 + doc.extend = false;
1.6235 + if (copyHistory) {
1.6236 + doc.history.undoDepth = this.history.undoDepth;
1.6237 + doc.setHistory(this.getHistory());
1.6238 + }
1.6239 + return doc;
1.6240 + },
1.6241 +
1.6242 + linkedDoc: function(options) {
1.6243 + if (!options) options = {};
1.6244 + var from = this.first, to = this.first + this.size;
1.6245 + if (options.from != null && options.from > from) from = options.from;
1.6246 + if (options.to != null && options.to < to) to = options.to;
1.6247 + var copy = new Doc(getLines(this, from, to), options.mode || this.modeOption, from);
1.6248 + if (options.sharedHist) copy.history = this.history;
1.6249 + (this.linked || (this.linked = [])).push({doc: copy, sharedHist: options.sharedHist});
1.6250 + copy.linked = [{doc: this, isParent: true, sharedHist: options.sharedHist}];
1.6251 + return copy;
1.6252 + },
1.6253 + unlinkDoc: function(other) {
1.6254 + if (other instanceof CodeMirror) other = other.doc;
1.6255 + if (this.linked) for (var i = 0; i < this.linked.length; ++i) {
1.6256 + var link = this.linked[i];
1.6257 + if (link.doc != other) continue;
1.6258 + this.linked.splice(i, 1);
1.6259 + other.unlinkDoc(this);
1.6260 + break;
1.6261 + }
1.6262 + // If the histories were shared, split them again
1.6263 + if (other.history == this.history) {
1.6264 + var splitIds = [other.id];
1.6265 + linkedDocs(other, function(doc) {splitIds.push(doc.id);}, true);
1.6266 + other.history = new History(null);
1.6267 + other.history.done = copyHistoryArray(this.history.done, splitIds);
1.6268 + other.history.undone = copyHistoryArray(this.history.undone, splitIds);
1.6269 + }
1.6270 + },
1.6271 + iterLinkedDocs: function(f) {linkedDocs(this, f);},
1.6272 +
1.6273 + getMode: function() {return this.mode;},
1.6274 + getEditor: function() {return this.cm;}
1.6275 + });
1.6276 +
1.6277 + // Public alias.
1.6278 + Doc.prototype.eachLine = Doc.prototype.iter;
1.6279 +
1.6280 + // Set up methods on CodeMirror's prototype to redirect to the editor's document.
1.6281 + var dontDelegate = "iter insert remove copy getEditor".split(" ");
1.6282 + for (var prop in Doc.prototype) if (Doc.prototype.hasOwnProperty(prop) && indexOf(dontDelegate, prop) < 0)
1.6283 + CodeMirror.prototype[prop] = (function(method) {
1.6284 + return function() {return method.apply(this.doc, arguments);};
1.6285 + })(Doc.prototype[prop]);
1.6286 +
1.6287 + eventMixin(Doc);
1.6288 +
1.6289 + // Call f for all linked documents.
1.6290 + function linkedDocs(doc, f, sharedHistOnly) {
1.6291 + function propagate(doc, skip, sharedHist) {
1.6292 + if (doc.linked) for (var i = 0; i < doc.linked.length; ++i) {
1.6293 + var rel = doc.linked[i];
1.6294 + if (rel.doc == skip) continue;
1.6295 + var shared = sharedHist && rel.sharedHist;
1.6296 + if (sharedHistOnly && !shared) continue;
1.6297 + f(rel.doc, shared);
1.6298 + propagate(rel.doc, doc, shared);
1.6299 + }
1.6300 + }
1.6301 + propagate(doc, null, true);
1.6302 + }
1.6303 +
1.6304 + // Attach a document to an editor.
1.6305 + function attachDoc(cm, doc) {
1.6306 + if (doc.cm) throw new Error("This document is already in use.");
1.6307 + cm.doc = doc;
1.6308 + doc.cm = cm;
1.6309 + estimateLineHeights(cm);
1.6310 + loadMode(cm);
1.6311 + if (!cm.options.lineWrapping) findMaxLine(cm);
1.6312 + cm.options.mode = doc.modeOption;
1.6313 + regChange(cm);
1.6314 + }
1.6315 +
1.6316 + // LINE UTILITIES
1.6317 +
1.6318 + // Find the line object corresponding to the given line number.
1.6319 + function getLine(doc, n) {
1.6320 + n -= doc.first;
1.6321 + if (n < 0 || n >= doc.size) throw new Error("There is no line " + (n + doc.first) + " in the document.");
1.6322 + for (var chunk = doc; !chunk.lines;) {
1.6323 + for (var i = 0;; ++i) {
1.6324 + var child = chunk.children[i], sz = child.chunkSize();
1.6325 + if (n < sz) { chunk = child; break; }
1.6326 + n -= sz;
1.6327 + }
1.6328 + }
1.6329 + return chunk.lines[n];
1.6330 + }
1.6331 +
1.6332 + // Get the part of a document between two positions, as an array of
1.6333 + // strings.
1.6334 + function getBetween(doc, start, end) {
1.6335 + var out = [], n = start.line;
1.6336 + doc.iter(start.line, end.line + 1, function(line) {
1.6337 + var text = line.text;
1.6338 + if (n == end.line) text = text.slice(0, end.ch);
1.6339 + if (n == start.line) text = text.slice(start.ch);
1.6340 + out.push(text);
1.6341 + ++n;
1.6342 + });
1.6343 + return out;
1.6344 + }
1.6345 + // Get the lines between from and to, as array of strings.
1.6346 + function getLines(doc, from, to) {
1.6347 + var out = [];
1.6348 + doc.iter(from, to, function(line) { out.push(line.text); });
1.6349 + return out;
1.6350 + }
1.6351 +
1.6352 + // Update the height of a line, propagating the height change
1.6353 + // upwards to parent nodes.
1.6354 + function updateLineHeight(line, height) {
1.6355 + var diff = height - line.height;
1.6356 + if (diff) for (var n = line; n; n = n.parent) n.height += diff;
1.6357 + }
1.6358 +
1.6359 + // Given a line object, find its line number by walking up through
1.6360 + // its parent links.
1.6361 + function lineNo(line) {
1.6362 + if (line.parent == null) return null;
1.6363 + var cur = line.parent, no = indexOf(cur.lines, line);
1.6364 + for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
1.6365 + for (var i = 0;; ++i) {
1.6366 + if (chunk.children[i] == cur) break;
1.6367 + no += chunk.children[i].chunkSize();
1.6368 + }
1.6369 + }
1.6370 + return no + cur.first;
1.6371 + }
1.6372 +
1.6373 + // Find the line at the given vertical position, using the height
1.6374 + // information in the document tree.
1.6375 + function lineAtHeight(chunk, h) {
1.6376 + var n = chunk.first;
1.6377 + outer: do {
1.6378 + for (var i = 0; i < chunk.children.length; ++i) {
1.6379 + var child = chunk.children[i], ch = child.height;
1.6380 + if (h < ch) { chunk = child; continue outer; }
1.6381 + h -= ch;
1.6382 + n += child.chunkSize();
1.6383 + }
1.6384 + return n;
1.6385 + } while (!chunk.lines);
1.6386 + for (var i = 0; i < chunk.lines.length; ++i) {
1.6387 + var line = chunk.lines[i], lh = line.height;
1.6388 + if (h < lh) break;
1.6389 + h -= lh;
1.6390 + }
1.6391 + return n + i;
1.6392 + }
1.6393 +
1.6394 +
1.6395 + // Find the height above the given line.
1.6396 + function heightAtLine(lineObj) {
1.6397 + lineObj = visualLine(lineObj);
1.6398 +
1.6399 + var h = 0, chunk = lineObj.parent;
1.6400 + for (var i = 0; i < chunk.lines.length; ++i) {
1.6401 + var line = chunk.lines[i];
1.6402 + if (line == lineObj) break;
1.6403 + else h += line.height;
1.6404 + }
1.6405 + for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
1.6406 + for (var i = 0; i < p.children.length; ++i) {
1.6407 + var cur = p.children[i];
1.6408 + if (cur == chunk) break;
1.6409 + else h += cur.height;
1.6410 + }
1.6411 + }
1.6412 + return h;
1.6413 + }
1.6414 +
1.6415 + // Get the bidi ordering for the given line (and cache it). Returns
1.6416 + // false for lines that are fully left-to-right, and an array of
1.6417 + // BidiSpan objects otherwise.
1.6418 + function getOrder(line) {
1.6419 + var order = line.order;
1.6420 + if (order == null) order = line.order = bidiOrdering(line.text);
1.6421 + return order;
1.6422 + }
1.6423 +
1.6424 + // HISTORY
1.6425 +
1.6426 + function History(startGen) {
1.6427 + // Arrays of change events and selections. Doing something adds an
1.6428 + // event to done and clears undo. Undoing moves events from done
1.6429 + // to undone, redoing moves them in the other direction.
1.6430 + this.done = []; this.undone = [];
1.6431 + this.undoDepth = Infinity;
1.6432 + // Used to track when changes can be merged into a single undo
1.6433 + // event
1.6434 + this.lastModTime = this.lastSelTime = 0;
1.6435 + this.lastOp = null;
1.6436 + this.lastOrigin = this.lastSelOrigin = null;
1.6437 + // Used by the isClean() method
1.6438 + this.generation = this.maxGeneration = startGen || 1;
1.6439 + }
1.6440 +
1.6441 + // Create a history change event from an updateDoc-style change
1.6442 + // object.
1.6443 + function historyChangeFromChange(doc, change) {
1.6444 + var histChange = {from: copyPos(change.from), to: changeEnd(change), text: getBetween(doc, change.from, change.to)};
1.6445 + attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);
1.6446 + linkedDocs(doc, function(doc) {attachLocalSpans(doc, histChange, change.from.line, change.to.line + 1);}, true);
1.6447 + return histChange;
1.6448 + }
1.6449 +
1.6450 + // Pop all selection events off the end of a history array. Stop at
1.6451 + // a change event.
1.6452 + function clearSelectionEvents(array) {
1.6453 + while (array.length) {
1.6454 + var last = lst(array);
1.6455 + if (last.ranges) array.pop();
1.6456 + else break;
1.6457 + }
1.6458 + }
1.6459 +
1.6460 + // Find the top change event in the history. Pop off selection
1.6461 + // events that are in the way.
1.6462 + function lastChangeEvent(hist, force) {
1.6463 + if (force) {
1.6464 + clearSelectionEvents(hist.done);
1.6465 + return lst(hist.done);
1.6466 + } else if (hist.done.length && !lst(hist.done).ranges) {
1.6467 + return lst(hist.done);
1.6468 + } else if (hist.done.length > 1 && !hist.done[hist.done.length - 2].ranges) {
1.6469 + hist.done.pop();
1.6470 + return lst(hist.done);
1.6471 + }
1.6472 + }
1.6473 +
1.6474 + // Register a change in the history. Merges changes that are within
1.6475 + // a single operation, ore are close together with an origin that
1.6476 + // allows merging (starting with "+") into a single event.
1.6477 + function addChangeToHistory(doc, change, selAfter, opId) {
1.6478 + var hist = doc.history;
1.6479 + hist.undone.length = 0;
1.6480 + var time = +new Date, cur;
1.6481 +
1.6482 + if ((hist.lastOp == opId ||
1.6483 + hist.lastOrigin == change.origin && change.origin &&
1.6484 + ((change.origin.charAt(0) == "+" && doc.cm && hist.lastModTime > time - doc.cm.options.historyEventDelay) ||
1.6485 + change.origin.charAt(0) == "*")) &&
1.6486 + (cur = lastChangeEvent(hist, hist.lastOp == opId))) {
1.6487 + // Merge this change into the last event
1.6488 + var last = lst(cur.changes);
1.6489 + if (cmp(change.from, change.to) == 0 && cmp(change.from, last.to) == 0) {
1.6490 + // Optimized case for simple insertion -- don't want to add
1.6491 + // new changesets for every character typed
1.6492 + last.to = changeEnd(change);
1.6493 + } else {
1.6494 + // Add new sub-event
1.6495 + cur.changes.push(historyChangeFromChange(doc, change));
1.6496 + }
1.6497 + } else {
1.6498 + // Can not be merged, start a new event.
1.6499 + var before = lst(hist.done);
1.6500 + if (!before || !before.ranges)
1.6501 + pushSelectionToHistory(doc.sel, hist.done);
1.6502 + cur = {changes: [historyChangeFromChange(doc, change)],
1.6503 + generation: hist.generation};
1.6504 + hist.done.push(cur);
1.6505 + while (hist.done.length > hist.undoDepth) {
1.6506 + hist.done.shift();
1.6507 + if (!hist.done[0].ranges) hist.done.shift();
1.6508 + }
1.6509 + }
1.6510 + hist.done.push(selAfter);
1.6511 + hist.generation = ++hist.maxGeneration;
1.6512 + hist.lastModTime = hist.lastSelTime = time;
1.6513 + hist.lastOp = opId;
1.6514 + hist.lastOrigin = hist.lastSelOrigin = change.origin;
1.6515 +
1.6516 + if (!last) signal(doc, "historyAdded");
1.6517 + }
1.6518 +
1.6519 + function selectionEventCanBeMerged(doc, origin, prev, sel) {
1.6520 + var ch = origin.charAt(0);
1.6521 + return ch == "*" ||
1.6522 + ch == "+" &&
1.6523 + prev.ranges.length == sel.ranges.length &&
1.6524 + prev.somethingSelected() == sel.somethingSelected() &&
1.6525 + new Date - doc.history.lastSelTime <= (doc.cm ? doc.cm.options.historyEventDelay : 500);
1.6526 + }
1.6527 +
1.6528 + // Called whenever the selection changes, sets the new selection as
1.6529 + // the pending selection in the history, and pushes the old pending
1.6530 + // selection into the 'done' array when it was significantly
1.6531 + // different (in number of selected ranges, emptiness, or time).
1.6532 + function addSelectionToHistory(doc, sel, opId, options) {
1.6533 + var hist = doc.history, origin = options && options.origin;
1.6534 +
1.6535 + // A new event is started when the previous origin does not match
1.6536 + // the current, or the origins don't allow matching. Origins
1.6537 + // starting with * are always merged, those starting with + are
1.6538 + // merged when similar and close together in time.
1.6539 + if (opId == hist.lastOp ||
1.6540 + (origin && hist.lastSelOrigin == origin &&
1.6541 + (hist.lastModTime == hist.lastSelTime && hist.lastOrigin == origin ||
1.6542 + selectionEventCanBeMerged(doc, origin, lst(hist.done), sel))))
1.6543 + hist.done[hist.done.length - 1] = sel;
1.6544 + else
1.6545 + pushSelectionToHistory(sel, hist.done);
1.6546 +
1.6547 + hist.lastSelTime = +new Date;
1.6548 + hist.lastSelOrigin = origin;
1.6549 + hist.lastOp = opId;
1.6550 + if (options && options.clearRedo !== false)
1.6551 + clearSelectionEvents(hist.undone);
1.6552 + }
1.6553 +
1.6554 + function pushSelectionToHistory(sel, dest) {
1.6555 + var top = lst(dest);
1.6556 + if (!(top && top.ranges && top.equals(sel)))
1.6557 + dest.push(sel);
1.6558 + }
1.6559 +
1.6560 + // Used to store marked span information in the history.
1.6561 + function attachLocalSpans(doc, change, from, to) {
1.6562 + var existing = change["spans_" + doc.id], n = 0;
1.6563 + doc.iter(Math.max(doc.first, from), Math.min(doc.first + doc.size, to), function(line) {
1.6564 + if (line.markedSpans)
1.6565 + (existing || (existing = change["spans_" + doc.id] = {}))[n] = line.markedSpans;
1.6566 + ++n;
1.6567 + });
1.6568 + }
1.6569 +
1.6570 + // When un/re-doing restores text containing marked spans, those
1.6571 + // that have been explicitly cleared should not be restored.
1.6572 + function removeClearedSpans(spans) {
1.6573 + if (!spans) return null;
1.6574 + for (var i = 0, out; i < spans.length; ++i) {
1.6575 + if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
1.6576 + else if (out) out.push(spans[i]);
1.6577 + }
1.6578 + return !out ? spans : out.length ? out : null;
1.6579 + }
1.6580 +
1.6581 + // Retrieve and filter the old marked spans stored in a change event.
1.6582 + function getOldSpans(doc, change) {
1.6583 + var found = change["spans_" + doc.id];
1.6584 + if (!found) return null;
1.6585 + for (var i = 0, nw = []; i < change.text.length; ++i)
1.6586 + nw.push(removeClearedSpans(found[i]));
1.6587 + return nw;
1.6588 + }
1.6589 +
1.6590 + // Used both to provide a JSON-safe object in .getHistory, and, when
1.6591 + // detaching a document, to split the history in two
1.6592 + function copyHistoryArray(events, newGroup, instantiateSel) {
1.6593 + for (var i = 0, copy = []; i < events.length; ++i) {
1.6594 + var event = events[i];
1.6595 + if (event.ranges) {
1.6596 + copy.push(instantiateSel ? Selection.prototype.deepCopy.call(event) : event);
1.6597 + continue;
1.6598 + }
1.6599 + var changes = event.changes, newChanges = [];
1.6600 + copy.push({changes: newChanges});
1.6601 + for (var j = 0; j < changes.length; ++j) {
1.6602 + var change = changes[j], m;
1.6603 + newChanges.push({from: change.from, to: change.to, text: change.text});
1.6604 + if (newGroup) for (var prop in change) if (m = prop.match(/^spans_(\d+)$/)) {
1.6605 + if (indexOf(newGroup, Number(m[1])) > -1) {
1.6606 + lst(newChanges)[prop] = change[prop];
1.6607 + delete change[prop];
1.6608 + }
1.6609 + }
1.6610 + }
1.6611 + }
1.6612 + return copy;
1.6613 + }
1.6614 +
1.6615 + // Rebasing/resetting history to deal with externally-sourced changes
1.6616 +
1.6617 + function rebaseHistSelSingle(pos, from, to, diff) {
1.6618 + if (to < pos.line) {
1.6619 + pos.line += diff;
1.6620 + } else if (from < pos.line) {
1.6621 + pos.line = from;
1.6622 + pos.ch = 0;
1.6623 + }
1.6624 + }
1.6625 +
1.6626 + // Tries to rebase an array of history events given a change in the
1.6627 + // document. If the change touches the same lines as the event, the
1.6628 + // event, and everything 'behind' it, is discarded. If the change is
1.6629 + // before the event, the event's positions are updated. Uses a
1.6630 + // copy-on-write scheme for the positions, to avoid having to
1.6631 + // reallocate them all on every rebase, but also avoid problems with
1.6632 + // shared position objects being unsafely updated.
1.6633 + function rebaseHistArray(array, from, to, diff) {
1.6634 + for (var i = 0; i < array.length; ++i) {
1.6635 + var sub = array[i], ok = true;
1.6636 + if (sub.ranges) {
1.6637 + if (!sub.copied) { sub = array[i] = sub.deepCopy(); sub.copied = true; }
1.6638 + for (var j = 0; j < sub.ranges.length; j++) {
1.6639 + rebaseHistSelSingle(sub.ranges[j].anchor, from, to, diff);
1.6640 + rebaseHistSelSingle(sub.ranges[j].head, from, to, diff);
1.6641 + }
1.6642 + continue;
1.6643 + }
1.6644 + for (var j = 0; j < sub.changes.length; ++j) {
1.6645 + var cur = sub.changes[j];
1.6646 + if (to < cur.from.line) {
1.6647 + cur.from = Pos(cur.from.line + diff, cur.from.ch);
1.6648 + cur.to = Pos(cur.to.line + diff, cur.to.ch);
1.6649 + } else if (from <= cur.to.line) {
1.6650 + ok = false;
1.6651 + break;
1.6652 + }
1.6653 + }
1.6654 + if (!ok) {
1.6655 + array.splice(0, i + 1);
1.6656 + i = 0;
1.6657 + }
1.6658 + }
1.6659 + }
1.6660 +
1.6661 + function rebaseHist(hist, change) {
1.6662 + var from = change.from.line, to = change.to.line, diff = change.text.length - (to - from) - 1;
1.6663 + rebaseHistArray(hist.done, from, to, diff);
1.6664 + rebaseHistArray(hist.undone, from, to, diff);
1.6665 + }
1.6666 +
1.6667 + // EVENT UTILITIES
1.6668 +
1.6669 + // Due to the fact that we still support jurassic IE versions, some
1.6670 + // compatibility wrappers are needed.
1.6671 +
1.6672 + var e_preventDefault = CodeMirror.e_preventDefault = function(e) {
1.6673 + if (e.preventDefault) e.preventDefault();
1.6674 + else e.returnValue = false;
1.6675 + };
1.6676 + var e_stopPropagation = CodeMirror.e_stopPropagation = function(e) {
1.6677 + if (e.stopPropagation) e.stopPropagation();
1.6678 + else e.cancelBubble = true;
1.6679 + };
1.6680 + function e_defaultPrevented(e) {
1.6681 + return e.defaultPrevented != null ? e.defaultPrevented : e.returnValue == false;
1.6682 + }
1.6683 + var e_stop = CodeMirror.e_stop = function(e) {e_preventDefault(e); e_stopPropagation(e);};
1.6684 +
1.6685 + function e_target(e) {return e.target || e.srcElement;}
1.6686 + function e_button(e) {
1.6687 + var b = e.which;
1.6688 + if (b == null) {
1.6689 + if (e.button & 1) b = 1;
1.6690 + else if (e.button & 2) b = 3;
1.6691 + else if (e.button & 4) b = 2;
1.6692 + }
1.6693 + if (mac && e.ctrlKey && b == 1) b = 3;
1.6694 + return b;
1.6695 + }
1.6696 +
1.6697 + // EVENT HANDLING
1.6698 +
1.6699 + // Lightweight event framework. on/off also work on DOM nodes,
1.6700 + // registering native DOM handlers.
1.6701 +
1.6702 + var on = CodeMirror.on = function(emitter, type, f) {
1.6703 + if (emitter.addEventListener)
1.6704 + emitter.addEventListener(type, f, false);
1.6705 + else if (emitter.attachEvent)
1.6706 + emitter.attachEvent("on" + type, f);
1.6707 + else {
1.6708 + var map = emitter._handlers || (emitter._handlers = {});
1.6709 + var arr = map[type] || (map[type] = []);
1.6710 + arr.push(f);
1.6711 + }
1.6712 + };
1.6713 +
1.6714 + var off = CodeMirror.off = function(emitter, type, f) {
1.6715 + if (emitter.removeEventListener)
1.6716 + emitter.removeEventListener(type, f, false);
1.6717 + else if (emitter.detachEvent)
1.6718 + emitter.detachEvent("on" + type, f);
1.6719 + else {
1.6720 + var arr = emitter._handlers && emitter._handlers[type];
1.6721 + if (!arr) return;
1.6722 + for (var i = 0; i < arr.length; ++i)
1.6723 + if (arr[i] == f) { arr.splice(i, 1); break; }
1.6724 + }
1.6725 + };
1.6726 +
1.6727 + var signal = CodeMirror.signal = function(emitter, type /*, values...*/) {
1.6728 + var arr = emitter._handlers && emitter._handlers[type];
1.6729 + if (!arr) return;
1.6730 + var args = Array.prototype.slice.call(arguments, 2);
1.6731 + for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
1.6732 + };
1.6733 +
1.6734 + // Often, we want to signal events at a point where we are in the
1.6735 + // middle of some work, but don't want the handler to start calling
1.6736 + // other methods on the editor, which might be in an inconsistent
1.6737 + // state or simply not expect any other events to happen.
1.6738 + // signalLater looks whether there are any handlers, and schedules
1.6739 + // them to be executed when the last operation ends, or, if no
1.6740 + // operation is active, when a timeout fires.
1.6741 + var delayedCallbacks, delayedCallbackDepth = 0;
1.6742 + function signalLater(emitter, type /*, values...*/) {
1.6743 + var arr = emitter._handlers && emitter._handlers[type];
1.6744 + if (!arr) return;
1.6745 + var args = Array.prototype.slice.call(arguments, 2);
1.6746 + if (!delayedCallbacks) {
1.6747 + ++delayedCallbackDepth;
1.6748 + delayedCallbacks = [];
1.6749 + setTimeout(fireDelayed, 0);
1.6750 + }
1.6751 + function bnd(f) {return function(){f.apply(null, args);};};
1.6752 + for (var i = 0; i < arr.length; ++i)
1.6753 + delayedCallbacks.push(bnd(arr[i]));
1.6754 + }
1.6755 +
1.6756 + function fireDelayed() {
1.6757 + --delayedCallbackDepth;
1.6758 + var delayed = delayedCallbacks;
1.6759 + delayedCallbacks = null;
1.6760 + for (var i = 0; i < delayed.length; ++i) delayed[i]();
1.6761 + }
1.6762 +
1.6763 + // The DOM events that CodeMirror handles can be overridden by
1.6764 + // registering a (non-DOM) handler on the editor for the event name,
1.6765 + // and preventDefault-ing the event in that handler.
1.6766 + function signalDOMEvent(cm, e, override) {
1.6767 + signal(cm, override || e.type, cm, e);
1.6768 + return e_defaultPrevented(e) || e.codemirrorIgnore;
1.6769 + }
1.6770 +
1.6771 + function hasHandler(emitter, type) {
1.6772 + var arr = emitter._handlers && emitter._handlers[type];
1.6773 + return arr && arr.length > 0;
1.6774 + }
1.6775 +
1.6776 + // Add on and off methods to a constructor's prototype, to make
1.6777 + // registering events on such objects more convenient.
1.6778 + function eventMixin(ctor) {
1.6779 + ctor.prototype.on = function(type, f) {on(this, type, f);};
1.6780 + ctor.prototype.off = function(type, f) {off(this, type, f);};
1.6781 + }
1.6782 +
1.6783 + // MISC UTILITIES
1.6784 +
1.6785 + // Number of pixels added to scroller and sizer to hide scrollbar
1.6786 + var scrollerCutOff = 30;
1.6787 +
1.6788 + // Returned or thrown by various protocols to signal 'I'm not
1.6789 + // handling this'.
1.6790 + var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
1.6791 +
1.6792 + // Reused option objects for setSelection & friends
1.6793 + var sel_dontScroll = {scroll: false}, sel_mouse = {origin: "*mouse"}, sel_move = {origin: "+move"};
1.6794 +
1.6795 + function Delayed() {this.id = null;}
1.6796 + Delayed.prototype.set = function(ms, f) {
1.6797 + clearTimeout(this.id);
1.6798 + this.id = setTimeout(f, ms);
1.6799 + };
1.6800 +
1.6801 + // Counts the column offset in a string, taking tabs into account.
1.6802 + // Used mostly to find indentation.
1.6803 + var countColumn = CodeMirror.countColumn = function(string, end, tabSize, startIndex, startValue) {
1.6804 + if (end == null) {
1.6805 + end = string.search(/[^\s\u00a0]/);
1.6806 + if (end == -1) end = string.length;
1.6807 + }
1.6808 + for (var i = startIndex || 0, n = startValue || 0;;) {
1.6809 + var nextTab = string.indexOf("\t", i);
1.6810 + if (nextTab < 0 || nextTab >= end)
1.6811 + return n + (end - i);
1.6812 + n += nextTab - i;
1.6813 + n += tabSize - (n % tabSize);
1.6814 + i = nextTab + 1;
1.6815 + }
1.6816 + };
1.6817 +
1.6818 + // The inverse of countColumn -- find the offset that corresponds to
1.6819 + // a particular column.
1.6820 + function findColumn(string, goal, tabSize) {
1.6821 + for (var pos = 0, col = 0;;) {
1.6822 + var nextTab = string.indexOf("\t", pos);
1.6823 + if (nextTab == -1) nextTab = string.length;
1.6824 + var skipped = nextTab - pos;
1.6825 + if (nextTab == string.length || col + skipped >= goal)
1.6826 + return pos + Math.min(skipped, goal - col);
1.6827 + col += nextTab - pos;
1.6828 + col += tabSize - (col % tabSize);
1.6829 + pos = nextTab + 1;
1.6830 + if (col >= goal) return pos;
1.6831 + }
1.6832 + }
1.6833 +
1.6834 + var spaceStrs = [""];
1.6835 + function spaceStr(n) {
1.6836 + while (spaceStrs.length <= n)
1.6837 + spaceStrs.push(lst(spaceStrs) + " ");
1.6838 + return spaceStrs[n];
1.6839 + }
1.6840 +
1.6841 + function lst(arr) { return arr[arr.length-1]; }
1.6842 +
1.6843 + var selectInput = function(node) { node.select(); };
1.6844 + if (ios) // Mobile Safari apparently has a bug where select() is broken.
1.6845 + selectInput = function(node) { node.selectionStart = 0; node.selectionEnd = node.value.length; };
1.6846 + else if (ie) // Suppress mysterious IE10 errors
1.6847 + selectInput = function(node) { try { node.select(); } catch(_e) {} };
1.6848 +
1.6849 + function indexOf(array, elt) {
1.6850 + for (var i = 0; i < array.length; ++i)
1.6851 + if (array[i] == elt) return i;
1.6852 + return -1;
1.6853 + }
1.6854 + if ([].indexOf) indexOf = function(array, elt) { return array.indexOf(elt); };
1.6855 + function map(array, f) {
1.6856 + var out = [];
1.6857 + for (var i = 0; i < array.length; i++) out[i] = f(array[i], i);
1.6858 + return out;
1.6859 + }
1.6860 + if ([].map) map = function(array, f) { return array.map(f); };
1.6861 +
1.6862 + function createObj(base, props) {
1.6863 + var inst;
1.6864 + if (Object.create) {
1.6865 + inst = Object.create(base);
1.6866 + } else {
1.6867 + var ctor = function() {};
1.6868 + ctor.prototype = base;
1.6869 + inst = new ctor();
1.6870 + }
1.6871 + if (props) copyObj(props, inst);
1.6872 + return inst;
1.6873 + };
1.6874 +
1.6875 + function copyObj(obj, target) {
1.6876 + if (!target) target = {};
1.6877 + for (var prop in obj) if (obj.hasOwnProperty(prop)) target[prop] = obj[prop];
1.6878 + return target;
1.6879 + }
1.6880 +
1.6881 + function bind(f) {
1.6882 + var args = Array.prototype.slice.call(arguments, 1);
1.6883 + return function(){return f.apply(null, args);};
1.6884 + }
1.6885 +
1.6886 + var nonASCIISingleCaseWordChar = /[\u00df\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc\uac00-\ud7af]/;
1.6887 + var isWordChar = CodeMirror.isWordChar = function(ch) {
1.6888 + return /\w/.test(ch) || ch > "\x80" &&
1.6889 + (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
1.6890 + };
1.6891 +
1.6892 + function isEmpty(obj) {
1.6893 + for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) return false;
1.6894 + return true;
1.6895 + }
1.6896 +
1.6897 + // Extending unicode characters. A series of a non-extending char +
1.6898 + // any number of extending chars is treated as a single unit as far
1.6899 + // as editing and measuring is concerned. This is not fully correct,
1.6900 + // since some scripts/fonts/browsers also treat other configurations
1.6901 + // of code points as a group.
1.6902 + 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]/;
1.6903 + function isExtendingChar(ch) { return ch.charCodeAt(0) >= 768 && extendingChars.test(ch); }
1.6904 +
1.6905 + // DOM UTILITIES
1.6906 +
1.6907 + function elt(tag, content, className, style) {
1.6908 + var e = document.createElement(tag);
1.6909 + if (className) e.className = className;
1.6910 + if (style) e.style.cssText = style;
1.6911 + if (typeof content == "string") e.appendChild(document.createTextNode(content));
1.6912 + else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
1.6913 + return e;
1.6914 + }
1.6915 +
1.6916 + var range;
1.6917 + if (document.createRange) range = function(node, start, end) {
1.6918 + var r = document.createRange();
1.6919 + r.setEnd(node, end);
1.6920 + r.setStart(node, start);
1.6921 + return r;
1.6922 + };
1.6923 + else range = function(node, start, end) {
1.6924 + var r = document.body.createTextRange();
1.6925 + r.moveToElementText(node.parentNode);
1.6926 + r.collapse(true);
1.6927 + r.moveEnd("character", end);
1.6928 + r.moveStart("character", start);
1.6929 + return r;
1.6930 + };
1.6931 +
1.6932 + function removeChildren(e) {
1.6933 + for (var count = e.childNodes.length; count > 0; --count)
1.6934 + e.removeChild(e.firstChild);
1.6935 + return e;
1.6936 + }
1.6937 +
1.6938 + function removeChildrenAndAdd(parent, e) {
1.6939 + return removeChildren(parent).appendChild(e);
1.6940 + }
1.6941 +
1.6942 + function contains(parent, child) {
1.6943 + if (parent.contains)
1.6944 + return parent.contains(child);
1.6945 + while (child = child.parentNode)
1.6946 + if (child == parent) return true;
1.6947 + }
1.6948 +
1.6949 + function activeElt() { return document.activeElement; }
1.6950 + // Older versions of IE throws unspecified error when touching
1.6951 + // document.activeElement in some cases (during loading, in iframe)
1.6952 + if (ie_upto10) activeElt = function() {
1.6953 + try { return document.activeElement; }
1.6954 + catch(e) { return document.body; }
1.6955 + };
1.6956 +
1.6957 + // FEATURE DETECTION
1.6958 +
1.6959 + // Detect drag-and-drop
1.6960 + var dragAndDrop = function() {
1.6961 + // There is *some* kind of drag-and-drop support in IE6-8, but I
1.6962 + // couldn't get it to work yet.
1.6963 + if (ie_upto8) return false;
1.6964 + var div = elt('div');
1.6965 + return "draggable" in div || "dragDrop" in div;
1.6966 + }();
1.6967 +
1.6968 + var knownScrollbarWidth;
1.6969 + function scrollbarWidth(measure) {
1.6970 + if (knownScrollbarWidth != null) return knownScrollbarWidth;
1.6971 + var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
1.6972 + removeChildrenAndAdd(measure, test);
1.6973 + if (test.offsetWidth)
1.6974 + knownScrollbarWidth = test.offsetHeight - test.clientHeight;
1.6975 + return knownScrollbarWidth || 0;
1.6976 + }
1.6977 +
1.6978 + var zwspSupported;
1.6979 + function zeroWidthElement(measure) {
1.6980 + if (zwspSupported == null) {
1.6981 + var test = elt("span", "\u200b");
1.6982 + removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
1.6983 + if (measure.firstChild.offsetHeight != 0)
1.6984 + zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_upto7;
1.6985 + }
1.6986 + if (zwspSupported) return elt("span", "\u200b");
1.6987 + else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
1.6988 + }
1.6989 +
1.6990 + // Feature-detect IE's crummy client rect reporting for bidi text
1.6991 + var badBidiRects;
1.6992 + function hasBadBidiRects(measure) {
1.6993 + if (badBidiRects != null) return badBidiRects;
1.6994 + var txt = removeChildrenAndAdd(measure, document.createTextNode("A\u062eA"));
1.6995 + var r0 = range(txt, 0, 1).getBoundingClientRect();
1.6996 + if (r0.left == r0.right) return false;
1.6997 + var r1 = range(txt, 1, 2).getBoundingClientRect();
1.6998 + return badBidiRects = (r1.right - r0.right < 3);
1.6999 + }
1.7000 +
1.7001 + // See if "".split is the broken IE version, if so, provide an
1.7002 + // alternative way to split lines.
1.7003 + var splitLines = CodeMirror.splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
1.7004 + var pos = 0, result = [], l = string.length;
1.7005 + while (pos <= l) {
1.7006 + var nl = string.indexOf("\n", pos);
1.7007 + if (nl == -1) nl = string.length;
1.7008 + var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
1.7009 + var rt = line.indexOf("\r");
1.7010 + if (rt != -1) {
1.7011 + result.push(line.slice(0, rt));
1.7012 + pos += rt + 1;
1.7013 + } else {
1.7014 + result.push(line);
1.7015 + pos = nl + 1;
1.7016 + }
1.7017 + }
1.7018 + return result;
1.7019 + } : function(string){return string.split(/\r\n?|\n/);};
1.7020 +
1.7021 + var hasSelection = window.getSelection ? function(te) {
1.7022 + try { return te.selectionStart != te.selectionEnd; }
1.7023 + catch(e) { return false; }
1.7024 + } : function(te) {
1.7025 + try {var range = te.ownerDocument.selection.createRange();}
1.7026 + catch(e) {}
1.7027 + if (!range || range.parentElement() != te) return false;
1.7028 + return range.compareEndPoints("StartToEnd", range) != 0;
1.7029 + };
1.7030 +
1.7031 + var hasCopyEvent = (function() {
1.7032 + var e = elt("div");
1.7033 + if ("oncopy" in e) return true;
1.7034 + e.setAttribute("oncopy", "return;");
1.7035 + return typeof e.oncopy == "function";
1.7036 + })();
1.7037 +
1.7038 + // KEY NAMES
1.7039 +
1.7040 + var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
1.7041 + 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
1.7042 + 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
1.7043 + 46: "Delete", 59: ";", 61: "=", 91: "Mod", 92: "Mod", 93: "Mod", 107: "=", 109: "-", 127: "Delete",
1.7044 + 173: "-", 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
1.7045 + 221: "]", 222: "'", 63232: "Up", 63233: "Down", 63234: "Left", 63235: "Right", 63272: "Delete",
1.7046 + 63273: "Home", 63275: "End", 63276: "PageUp", 63277: "PageDown", 63302: "Insert"};
1.7047 + CodeMirror.keyNames = keyNames;
1.7048 + (function() {
1.7049 + // Number keys
1.7050 + for (var i = 0; i < 10; i++) keyNames[i + 48] = keyNames[i + 96] = String(i);
1.7051 + // Alphabetic keys
1.7052 + for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
1.7053 + // Function keys
1.7054 + for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
1.7055 + })();
1.7056 +
1.7057 + // BIDI HELPERS
1.7058 +
1.7059 + function iterateBidiSections(order, from, to, f) {
1.7060 + if (!order) return f(from, to, "ltr");
1.7061 + var found = false;
1.7062 + for (var i = 0; i < order.length; ++i) {
1.7063 + var part = order[i];
1.7064 + if (part.from < to && part.to > from || from == to && part.to == from) {
1.7065 + f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
1.7066 + found = true;
1.7067 + }
1.7068 + }
1.7069 + if (!found) f(from, to, "ltr");
1.7070 + }
1.7071 +
1.7072 + function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
1.7073 + function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
1.7074 +
1.7075 + function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
1.7076 + function lineRight(line) {
1.7077 + var order = getOrder(line);
1.7078 + if (!order) return line.text.length;
1.7079 + return bidiRight(lst(order));
1.7080 + }
1.7081 +
1.7082 + function lineStart(cm, lineN) {
1.7083 + var line = getLine(cm.doc, lineN);
1.7084 + var visual = visualLine(line);
1.7085 + if (visual != line) lineN = lineNo(visual);
1.7086 + var order = getOrder(visual);
1.7087 + var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
1.7088 + return Pos(lineN, ch);
1.7089 + }
1.7090 + function lineEnd(cm, lineN) {
1.7091 + var merged, line = getLine(cm.doc, lineN);
1.7092 + while (merged = collapsedSpanAtEnd(line)) {
1.7093 + line = merged.find(1, true).line;
1.7094 + lineN = null;
1.7095 + }
1.7096 + var order = getOrder(line);
1.7097 + var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
1.7098 + return Pos(lineN == null ? lineNo(line) : lineN, ch);
1.7099 + }
1.7100 +
1.7101 + function compareBidiLevel(order, a, b) {
1.7102 + var linedir = order[0].level;
1.7103 + if (a == linedir) return true;
1.7104 + if (b == linedir) return false;
1.7105 + return a < b;
1.7106 + }
1.7107 + var bidiOther;
1.7108 + function getBidiPartAt(order, pos) {
1.7109 + bidiOther = null;
1.7110 + for (var i = 0, found; i < order.length; ++i) {
1.7111 + var cur = order[i];
1.7112 + if (cur.from < pos && cur.to > pos) return i;
1.7113 + if ((cur.from == pos || cur.to == pos)) {
1.7114 + if (found == null) {
1.7115 + found = i;
1.7116 + } else if (compareBidiLevel(order, cur.level, order[found].level)) {
1.7117 + if (cur.from != cur.to) bidiOther = found;
1.7118 + return i;
1.7119 + } else {
1.7120 + if (cur.from != cur.to) bidiOther = i;
1.7121 + return found;
1.7122 + }
1.7123 + }
1.7124 + }
1.7125 + return found;
1.7126 + }
1.7127 +
1.7128 + function moveInLine(line, pos, dir, byUnit) {
1.7129 + if (!byUnit) return pos + dir;
1.7130 + do pos += dir;
1.7131 + while (pos > 0 && isExtendingChar(line.text.charAt(pos)));
1.7132 + return pos;
1.7133 + }
1.7134 +
1.7135 + // This is needed in order to move 'visually' through bi-directional
1.7136 + // text -- i.e., pressing left should make the cursor go left, even
1.7137 + // when in RTL text. The tricky part is the 'jumps', where RTL and
1.7138 + // LTR text touch each other. This often requires the cursor offset
1.7139 + // to move more than one unit, in order to visually move one unit.
1.7140 + function moveVisually(line, start, dir, byUnit) {
1.7141 + var bidi = getOrder(line);
1.7142 + if (!bidi) return moveLogically(line, start, dir, byUnit);
1.7143 + var pos = getBidiPartAt(bidi, start), part = bidi[pos];
1.7144 + var target = moveInLine(line, start, part.level % 2 ? -dir : dir, byUnit);
1.7145 +
1.7146 + for (;;) {
1.7147 + if (target > part.from && target < part.to) return target;
1.7148 + if (target == part.from || target == part.to) {
1.7149 + if (getBidiPartAt(bidi, target) == pos) return target;
1.7150 + part = bidi[pos += dir];
1.7151 + return (dir > 0) == part.level % 2 ? part.to : part.from;
1.7152 + } else {
1.7153 + part = bidi[pos += dir];
1.7154 + if (!part) return null;
1.7155 + if ((dir > 0) == part.level % 2)
1.7156 + target = moveInLine(line, part.to, -1, byUnit);
1.7157 + else
1.7158 + target = moveInLine(line, part.from, 1, byUnit);
1.7159 + }
1.7160 + }
1.7161 + }
1.7162 +
1.7163 + function moveLogically(line, start, dir, byUnit) {
1.7164 + var target = start + dir;
1.7165 + if (byUnit) while (target > 0 && isExtendingChar(line.text.charAt(target))) target += dir;
1.7166 + return target < 0 || target > line.text.length ? null : target;
1.7167 + }
1.7168 +
1.7169 + // Bidirectional ordering algorithm
1.7170 + // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
1.7171 + // that this (partially) implements.
1.7172 +
1.7173 + // One-char codes used for character types:
1.7174 + // L (L): Left-to-Right
1.7175 + // R (R): Right-to-Left
1.7176 + // r (AL): Right-to-Left Arabic
1.7177 + // 1 (EN): European Number
1.7178 + // + (ES): European Number Separator
1.7179 + // % (ET): European Number Terminator
1.7180 + // n (AN): Arabic Number
1.7181 + // , (CS): Common Number Separator
1.7182 + // m (NSM): Non-Spacing Mark
1.7183 + // b (BN): Boundary Neutral
1.7184 + // s (B): Paragraph Separator
1.7185 + // t (S): Segment Separator
1.7186 + // w (WS): Whitespace
1.7187 + // N (ON): Other Neutrals
1.7188 +
1.7189 + // Returns null if characters are ordered as they appear
1.7190 + // (left-to-right), or an array of sections ({from, to, level}
1.7191 + // objects) in the order in which they occur visually.
1.7192 + var bidiOrdering = (function() {
1.7193 + // Character types for codepoints 0 to 0xff
1.7194 + var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLN";
1.7195 + // Character types for codepoints 0x600 to 0x6ff
1.7196 + var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmm";
1.7197 + function charType(code) {
1.7198 + if (code <= 0xf7) return lowTypes.charAt(code);
1.7199 + else if (0x590 <= code && code <= 0x5f4) return "R";
1.7200 + else if (0x600 <= code && code <= 0x6ed) return arabicTypes.charAt(code - 0x600);
1.7201 + else if (0x6ee <= code && code <= 0x8ac) return "r";
1.7202 + else if (0x2000 <= code && code <= 0x200b) return "w";
1.7203 + else if (code == 0x200c) return "b";
1.7204 + else return "L";
1.7205 + }
1.7206 +
1.7207 + var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
1.7208 + var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
1.7209 + // Browsers seem to always treat the boundaries of block elements as being L.
1.7210 + var outerType = "L";
1.7211 +
1.7212 + function BidiSpan(level, from, to) {
1.7213 + this.level = level;
1.7214 + this.from = from; this.to = to;
1.7215 + }
1.7216 +
1.7217 + return function(str) {
1.7218 + if (!bidiRE.test(str)) return false;
1.7219 + var len = str.length, types = [];
1.7220 + for (var i = 0, type; i < len; ++i)
1.7221 + types.push(type = charType(str.charCodeAt(i)));
1.7222 +
1.7223 + // W1. Examine each non-spacing mark (NSM) in the level run, and
1.7224 + // change the type of the NSM to the type of the previous
1.7225 + // character. If the NSM is at the start of the level run, it will
1.7226 + // get the type of sor.
1.7227 + for (var i = 0, prev = outerType; i < len; ++i) {
1.7228 + var type = types[i];
1.7229 + if (type == "m") types[i] = prev;
1.7230 + else prev = type;
1.7231 + }
1.7232 +
1.7233 + // W2. Search backwards from each instance of a European number
1.7234 + // until the first strong type (R, L, AL, or sor) is found. If an
1.7235 + // AL is found, change the type of the European number to Arabic
1.7236 + // number.
1.7237 + // W3. Change all ALs to R.
1.7238 + for (var i = 0, cur = outerType; i < len; ++i) {
1.7239 + var type = types[i];
1.7240 + if (type == "1" && cur == "r") types[i] = "n";
1.7241 + else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
1.7242 + }
1.7243 +
1.7244 + // W4. A single European separator between two European numbers
1.7245 + // changes to a European number. A single common separator between
1.7246 + // two numbers of the same type changes to that type.
1.7247 + for (var i = 1, prev = types[0]; i < len - 1; ++i) {
1.7248 + var type = types[i];
1.7249 + if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
1.7250 + else if (type == "," && prev == types[i+1] &&
1.7251 + (prev == "1" || prev == "n")) types[i] = prev;
1.7252 + prev = type;
1.7253 + }
1.7254 +
1.7255 + // W5. A sequence of European terminators adjacent to European
1.7256 + // numbers changes to all European numbers.
1.7257 + // W6. Otherwise, separators and terminators change to Other
1.7258 + // Neutral.
1.7259 + for (var i = 0; i < len; ++i) {
1.7260 + var type = types[i];
1.7261 + if (type == ",") types[i] = "N";
1.7262 + else if (type == "%") {
1.7263 + for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
1.7264 + var replace = (i && types[i-1] == "!") || (end < len && types[end] == "1") ? "1" : "N";
1.7265 + for (var j = i; j < end; ++j) types[j] = replace;
1.7266 + i = end - 1;
1.7267 + }
1.7268 + }
1.7269 +
1.7270 + // W7. Search backwards from each instance of a European number
1.7271 + // until the first strong type (R, L, or sor) is found. If an L is
1.7272 + // found, then change the type of the European number to L.
1.7273 + for (var i = 0, cur = outerType; i < len; ++i) {
1.7274 + var type = types[i];
1.7275 + if (cur == "L" && type == "1") types[i] = "L";
1.7276 + else if (isStrong.test(type)) cur = type;
1.7277 + }
1.7278 +
1.7279 + // N1. A sequence of neutrals takes the direction of the
1.7280 + // surrounding strong text if the text on both sides has the same
1.7281 + // direction. European and Arabic numbers act as if they were R in
1.7282 + // terms of their influence on neutrals. Start-of-level-run (sor)
1.7283 + // and end-of-level-run (eor) are used at level run boundaries.
1.7284 + // N2. Any remaining neutrals take the embedding direction.
1.7285 + for (var i = 0; i < len; ++i) {
1.7286 + if (isNeutral.test(types[i])) {
1.7287 + for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
1.7288 + var before = (i ? types[i-1] : outerType) == "L";
1.7289 + var after = (end < len ? types[end] : outerType) == "L";
1.7290 + var replace = before || after ? "L" : "R";
1.7291 + for (var j = i; j < end; ++j) types[j] = replace;
1.7292 + i = end - 1;
1.7293 + }
1.7294 + }
1.7295 +
1.7296 + // Here we depart from the documented algorithm, in order to avoid
1.7297 + // building up an actual levels array. Since there are only three
1.7298 + // levels (0, 1, 2) in an implementation that doesn't take
1.7299 + // explicit embedding into account, we can build up the order on
1.7300 + // the fly, without following the level-based algorithm.
1.7301 + var order = [], m;
1.7302 + for (var i = 0; i < len;) {
1.7303 + if (countsAsLeft.test(types[i])) {
1.7304 + var start = i;
1.7305 + for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
1.7306 + order.push(new BidiSpan(0, start, i));
1.7307 + } else {
1.7308 + var pos = i, at = order.length;
1.7309 + for (++i; i < len && types[i] != "L"; ++i) {}
1.7310 + for (var j = pos; j < i;) {
1.7311 + if (countsAsNum.test(types[j])) {
1.7312 + if (pos < j) order.splice(at, 0, new BidiSpan(1, pos, j));
1.7313 + var nstart = j;
1.7314 + for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
1.7315 + order.splice(at, 0, new BidiSpan(2, nstart, j));
1.7316 + pos = j;
1.7317 + } else ++j;
1.7318 + }
1.7319 + if (pos < i) order.splice(at, 0, new BidiSpan(1, pos, i));
1.7320 + }
1.7321 + }
1.7322 + if (order[0].level == 1 && (m = str.match(/^\s+/))) {
1.7323 + order[0].from = m[0].length;
1.7324 + order.unshift(new BidiSpan(0, 0, m[0].length));
1.7325 + }
1.7326 + if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
1.7327 + lst(order).to -= m[0].length;
1.7328 + order.push(new BidiSpan(0, len - m[0].length, len));
1.7329 + }
1.7330 + if (order[0].level != lst(order).level)
1.7331 + order.push(new BidiSpan(order[0].level, len, len));
1.7332 +
1.7333 + return order;
1.7334 + };
1.7335 + })();
1.7336 +
1.7337 + // THE END
1.7338 +
1.7339 + CodeMirror.version = "4.0.3";
1.7340 +
1.7341 + return CodeMirror;
1.7342 +});
