1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dew/src/main/resources/org/apidesign/bck2brwsr/dew/js/codemirror/codemirror.js Wed Jan 23 13:18:46 2013 +0100
1.3 @@ -0,0 +1,4553 @@
1.4 +// CodeMirror version 3.0
1.5 +//
1.6 +// CodeMirror is the only global var we claim
1.7 +window.CodeMirror = (function() {
1.8 + "use strict";
1.9 +
1.10 + // BROWSER SNIFFING
1.11 +
1.12 + // Crude, but necessary to handle a number of hard-to-feature-detect
1.13 + // bugs and behavior differences.
1.14 + var gecko = /gecko\/\d/i.test(navigator.userAgent);
1.15 + var ie = /MSIE \d/.test(navigator.userAgent);
1.16 + var ie_lt8 = /MSIE [1-7]\b/.test(navigator.userAgent);
1.17 + var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
1.18 + var webkit = /WebKit\//.test(navigator.userAgent);
1.19 + var qtwebkit = webkit && /Qt\/\d+\.\d+/.test(navigator.userAgent);
1.20 + var chrome = /Chrome\//.test(navigator.userAgent);
1.21 + var opera = /Opera\//.test(navigator.userAgent);
1.22 + var safari = /Apple Computer/.test(navigator.vendor);
1.23 + var khtml = /KHTML\//.test(navigator.userAgent);
1.24 + var mac_geLion = /Mac OS X 1\d\D([7-9]|\d\d)\D/.test(navigator.userAgent);
1.25 + var mac_geMountainLion = /Mac OS X 1\d\D([8-9]|\d\d)\D/.test(navigator.userAgent);
1.26 + var phantom = /PhantomJS/.test(navigator.userAgent);
1.27 +
1.28 + var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
1.29 + // This is woefully incomplete. Suggestions for alternative methods welcome.
1.30 + var mobile = ios || /Android|webOS|BlackBerry|Opera Mini|IEMobile/i.test(navigator.userAgent);
1.31 + var mac = ios || /Mac/.test(navigator.platform);
1.32 +
1.33 + // Optimize some code when these features are not used
1.34 + var sawReadOnlySpans = false, sawCollapsedSpans = false;
1.35 +
1.36 + // CONSTRUCTOR
1.37 +
1.38 + function CodeMirror(place, options) {
1.39 + if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);
1.40 +
1.41 + this.options = options = options || {};
1.42 + // Determine effective options based on given values and defaults.
1.43 + for (var opt in defaults) if (!options.hasOwnProperty(opt) && defaults.hasOwnProperty(opt))
1.44 + options[opt] = defaults[opt];
1.45 + setGuttersForLineNumbers(options);
1.46 +
1.47 + var display = this.display = makeDisplay(place);
1.48 + display.wrapper.CodeMirror = this;
1.49 + updateGutters(this);
1.50 + if (options.autofocus && !mobile) focusInput(this);
1.51 +
1.52 + this.view = makeView(new BranchChunk([new LeafChunk([makeLine("", null, textHeight(display))])]));
1.53 + this.nextOpId = 0;
1.54 + loadMode(this);
1.55 + themeChanged(this);
1.56 + if (options.lineWrapping)
1.57 + this.display.wrapper.className += " CodeMirror-wrap";
1.58 +
1.59 + // Initialize the content.
1.60 + this.setValue(options.value || "");
1.61 + // Override magic textarea content restore that IE sometimes does
1.62 + // on our hidden textarea on reload
1.63 + if (ie) setTimeout(bind(resetInput, this, true), 20);
1.64 + this.view.history = makeHistory();
1.65 +
1.66 + registerEventHandlers(this);
1.67 + // IE throws unspecified error in certain cases, when
1.68 + // trying to access activeElement before onload
1.69 + var hasFocus; try { hasFocus = (document.activeElement == display.input); } catch(e) { }
1.70 + if (hasFocus || (options.autofocus && !mobile)) setTimeout(bind(onFocus, this), 20);
1.71 + else onBlur(this);
1.72 +
1.73 + operation(this, function() {
1.74 + for (var opt in optionHandlers)
1.75 + if (optionHandlers.propertyIsEnumerable(opt))
1.76 + optionHandlers[opt](this, options[opt], Init);
1.77 + for (var i = 0; i < initHooks.length; ++i) initHooks[i](this);
1.78 + })();
1.79 + }
1.80 +
1.81 + // DISPLAY CONSTRUCTOR
1.82 +
1.83 + function makeDisplay(place) {
1.84 + var d = {};
1.85 + var input = d.input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em; outline: none;");
1.86 + input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
1.87 + // Wraps and hides input textarea
1.88 + d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
1.89 + // The actual fake scrollbars.
1.90 + d.scrollbarH = elt("div", [elt("div", null, null, "height: 1px")], "CodeMirror-hscrollbar");
1.91 + d.scrollbarV = elt("div", [elt("div", null, null, "width: 1px")], "CodeMirror-vscrollbar");
1.92 + d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");
1.93 + // DIVs containing the selection and the actual code
1.94 + d.lineDiv = elt("div");
1.95 + d.selectionDiv = elt("div", null, null, "position: relative; z-index: 1");
1.96 + // Blinky cursor, and element used to ensure cursor fits at the end of a line
1.97 + d.cursor = elt("pre", "\u00a0", "CodeMirror-cursor");
1.98 + // Secondary cursor, shown when on a 'jump' in bi-directional text
1.99 + d.otherCursor = elt("pre", "\u00a0", "CodeMirror-cursor CodeMirror-secondarycursor");
1.100 + // Used to measure text size
1.101 + d.measure = elt("div", null, "CodeMirror-measure");
1.102 + // Wraps everything that needs to exist inside the vertically-padded coordinate system
1.103 + d.lineSpace = elt("div", [d.measure, d.selectionDiv, d.lineDiv, d.cursor, d.otherCursor],
1.104 + null, "position: relative; outline: none");
1.105 + // Moved around its parent to cover visible view
1.106 + d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
1.107 + // Set to the height of the text, causes scrolling
1.108 + d.sizer = elt("div", [d.mover], "CodeMirror-sizer");
1.109 + // D is needed because behavior of elts with overflow: auto and padding is inconsistent across browsers
1.110 + d.heightForcer = elt("div", "\u00a0", null, "position: absolute; height: " + scrollerCutOff + "px");
1.111 + // Will contain the gutters, if any
1.112 + d.gutters = elt("div", null, "CodeMirror-gutters");
1.113 + d.lineGutter = null;
1.114 + // Helper element to properly size the gutter backgrounds
1.115 + var scrollerInner = elt("div", [d.sizer, d.heightForcer, d.gutters], null, "position: relative; min-height: 100%");
1.116 + // Provides scrolling
1.117 + d.scroller = elt("div", [scrollerInner], "CodeMirror-scroll");
1.118 + d.scroller.setAttribute("tabIndex", "-1");
1.119 + // The element in which the editor lives.
1.120 + d.wrapper = elt("div", [d.inputDiv, d.scrollbarH, d.scrollbarV,
1.121 + d.scrollbarFiller, d.scroller], "CodeMirror");
1.122 + // Work around IE7 z-index bug
1.123 + if (ie_lt8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }
1.124 + if (place.appendChild) place.appendChild(d.wrapper); else place(d.wrapper);
1.125 +
1.126 + // Needed to hide big blue blinking cursor on Mobile Safari
1.127 + if (ios) input.style.width = "0px";
1.128 + if (!webkit) d.scroller.draggable = true;
1.129 + // Needed to handle Tab key in KHTML
1.130 + if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }
1.131 + // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
1.132 + else if (ie_lt8) d.scrollbarH.style.minWidth = d.scrollbarV.style.minWidth = "18px";
1.133 +
1.134 + // Current visible range (may be bigger than the view window).
1.135 + d.viewOffset = d.showingFrom = d.showingTo = d.lastSizeC = 0;
1.136 +
1.137 + // Used to only resize the line number gutter when necessary (when
1.138 + // the amount of lines crosses a boundary that makes its width change)
1.139 + d.lineNumWidth = d.lineNumInnerWidth = d.lineNumChars = null;
1.140 + // See readInput and resetInput
1.141 + d.prevInput = "";
1.142 + // Set to true when a non-horizontal-scrolling widget is added. As
1.143 + // an optimization, widget aligning is skipped when d is false.
1.144 + d.alignWidgets = false;
1.145 + // Flag that indicates whether we currently expect input to appear
1.146 + // (after some event like 'keypress' or 'input') and are polling
1.147 + // intensively.
1.148 + d.pollingFast = false;
1.149 + // Self-resetting timeout for the poller
1.150 + d.poll = new Delayed();
1.151 + // True when a drag from the editor is active
1.152 + d.draggingText = false;
1.153 +
1.154 + d.cachedCharWidth = d.cachedTextHeight = null;
1.155 + d.measureLineCache = [];
1.156 + d.measureLineCachePos = 0;
1.157 +
1.158 + // Tracks when resetInput has punted to just putting a short
1.159 + // string instead of the (large) selection.
1.160 + d.inaccurateSelection = false;
1.161 +
1.162 + // Used to adjust overwrite behaviour when a paste has been
1.163 + // detected
1.164 + d.pasteIncoming = false;
1.165 +
1.166 + return d;
1.167 + }
1.168 +
1.169 + // VIEW CONSTRUCTOR
1.170 +
1.171 + function makeView(doc) {
1.172 + var selPos = {line: 0, ch: 0};
1.173 + return {
1.174 + doc: doc,
1.175 + // frontier is the point up to which the content has been parsed,
1.176 + frontier: 0, highlight: new Delayed(),
1.177 + sel: {from: selPos, to: selPos, head: selPos, anchor: selPos, shift: false, extend: false},
1.178 + scrollTop: 0, scrollLeft: 0,
1.179 + overwrite: false, focused: false,
1.180 + // Tracks the maximum line length so that
1.181 + // the horizontal scrollbar can be kept
1.182 + // static when scrolling.
1.183 + maxLine: getLine(doc, 0),
1.184 + maxLineLength: 0,
1.185 + maxLineChanged: false,
1.186 + suppressEdits: false,
1.187 + goalColumn: null,
1.188 + cantEdit: false,
1.189 + keyMaps: []
1.190 + };
1.191 + }
1.192 +
1.193 + // STATE UPDATES
1.194 +
1.195 + // Used to get the editor into a consistent state again when options change.
1.196 +
1.197 + function loadMode(cm) {
1.198 + var doc = cm.view.doc;
1.199 + cm.view.mode = CodeMirror.getMode(cm.options, cm.options.mode);
1.200 + doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
1.201 + cm.view.frontier = 0;
1.202 + startWorker(cm, 100);
1.203 + }
1.204 +
1.205 + function wrappingChanged(cm) {
1.206 + var doc = cm.view.doc, th = textHeight(cm.display);
1.207 + if (cm.options.lineWrapping) {
1.208 + cm.display.wrapper.className += " CodeMirror-wrap";
1.209 + var perLine = cm.display.scroller.clientWidth / charWidth(cm.display) - 3;
1.210 + doc.iter(0, doc.size, function(line) {
1.211 + if (line.height == 0) return;
1.212 + var guess = Math.ceil(line.text.length / perLine) || 1;
1.213 + if (guess != 1) updateLineHeight(line, guess * th);
1.214 + });
1.215 + cm.display.sizer.style.minWidth = "";
1.216 + } else {
1.217 + cm.display.wrapper.className = cm.display.wrapper.className.replace(" CodeMirror-wrap", "");
1.218 + computeMaxLength(cm.view);
1.219 + doc.iter(0, doc.size, function(line) {
1.220 + if (line.height != 0) updateLineHeight(line, th);
1.221 + });
1.222 + }
1.223 + regChange(cm, 0, doc.size);
1.224 + clearCaches(cm);
1.225 + setTimeout(function(){updateScrollbars(cm.display, cm.view.doc.height);}, 100);
1.226 + }
1.227 +
1.228 + function keyMapChanged(cm) {
1.229 + var style = keyMap[cm.options.keyMap].style;
1.230 + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
1.231 + (style ? " cm-keymap-" + style : "");
1.232 + }
1.233 +
1.234 + function themeChanged(cm) {
1.235 + cm.display.wrapper.className = cm.display.wrapper.className.replace(/\s*cm-s-\S+/g, "") +
1.236 + cm.options.theme.replace(/(^|\s)\s*/g, " cm-s-");
1.237 + clearCaches(cm);
1.238 + }
1.239 +
1.240 + function guttersChanged(cm) {
1.241 + updateGutters(cm);
1.242 + updateDisplay(cm, true);
1.243 + }
1.244 +
1.245 + function updateGutters(cm) {
1.246 + var gutters = cm.display.gutters, specs = cm.options.gutters;
1.247 + removeChildren(gutters);
1.248 + for (var i = 0; i < specs.length; ++i) {
1.249 + var gutterClass = specs[i];
1.250 + var gElt = gutters.appendChild(elt("div", null, "CodeMirror-gutter " + gutterClass));
1.251 + if (gutterClass == "CodeMirror-linenumbers") {
1.252 + cm.display.lineGutter = gElt;
1.253 + gElt.style.width = (cm.display.lineNumWidth || 1) + "px";
1.254 + }
1.255 + }
1.256 + gutters.style.display = i ? "" : "none";
1.257 + }
1.258 +
1.259 + function lineLength(doc, line) {
1.260 + if (line.height == 0) return 0;
1.261 + var len = line.text.length, merged, cur = line;
1.262 + while (merged = collapsedSpanAtStart(cur)) {
1.263 + var found = merged.find();
1.264 + cur = getLine(doc, found.from.line);
1.265 + len += found.from.ch - found.to.ch;
1.266 + }
1.267 + cur = line;
1.268 + while (merged = collapsedSpanAtEnd(cur)) {
1.269 + var found = merged.find();
1.270 + len -= cur.text.length - found.from.ch;
1.271 + cur = getLine(doc, found.to.line);
1.272 + len += cur.text.length - found.to.ch;
1.273 + }
1.274 + return len;
1.275 + }
1.276 +
1.277 + function computeMaxLength(view) {
1.278 + view.maxLine = getLine(view.doc, 0);
1.279 + view.maxLineLength = lineLength(view.doc, view.maxLine);
1.280 + view.maxLineChanged = true;
1.281 + view.doc.iter(1, view.doc.size, function(line) {
1.282 + var len = lineLength(view.doc, line);
1.283 + if (len > view.maxLineLength) {
1.284 + view.maxLineLength = len;
1.285 + view.maxLine = line;
1.286 + }
1.287 + });
1.288 + }
1.289 +
1.290 + // Make sure the gutters options contains the element
1.291 + // "CodeMirror-linenumbers" when the lineNumbers option is true.
1.292 + function setGuttersForLineNumbers(options) {
1.293 + var found = false;
1.294 + for (var i = 0; i < options.gutters.length; ++i) {
1.295 + if (options.gutters[i] == "CodeMirror-linenumbers") {
1.296 + if (options.lineNumbers) found = true;
1.297 + else options.gutters.splice(i--, 1);
1.298 + }
1.299 + }
1.300 + if (!found && options.lineNumbers)
1.301 + options.gutters.push("CodeMirror-linenumbers");
1.302 + }
1.303 +
1.304 + // SCROLLBARS
1.305 +
1.306 + // Re-synchronize the fake scrollbars with the actual size of the
1.307 + // content. Optionally force a scrollTop.
1.308 + function updateScrollbars(d /* display */, docHeight) {
1.309 + var totalHeight = docHeight + 2 * paddingTop(d);
1.310 + d.sizer.style.minHeight = d.heightForcer.style.top = totalHeight + "px";
1.311 + var scrollHeight = Math.max(totalHeight, d.scroller.scrollHeight);
1.312 + var needsH = d.scroller.scrollWidth > d.scroller.clientWidth;
1.313 + var needsV = scrollHeight > d.scroller.clientHeight;
1.314 + if (needsV) {
1.315 + d.scrollbarV.style.display = "block";
1.316 + d.scrollbarV.style.bottom = needsH ? scrollbarWidth(d.measure) + "px" : "0";
1.317 + d.scrollbarV.firstChild.style.height =
1.318 + (scrollHeight - d.scroller.clientHeight + d.scrollbarV.clientHeight) + "px";
1.319 + } else d.scrollbarV.style.display = "";
1.320 + if (needsH) {
1.321 + d.scrollbarH.style.display = "block";
1.322 + d.scrollbarH.style.right = needsV ? scrollbarWidth(d.measure) + "px" : "0";
1.323 + d.scrollbarH.firstChild.style.width =
1.324 + (d.scroller.scrollWidth - d.scroller.clientWidth + d.scrollbarH.clientWidth) + "px";
1.325 + } else d.scrollbarH.style.display = "";
1.326 + if (needsH && needsV) {
1.327 + d.scrollbarFiller.style.display = "block";
1.328 + d.scrollbarFiller.style.height = d.scrollbarFiller.style.width = scrollbarWidth(d.measure) + "px";
1.329 + } else d.scrollbarFiller.style.display = "";
1.330 +
1.331 + if (mac_geLion && scrollbarWidth(d.measure) === 0)
1.332 + d.scrollbarV.style.minWidth = d.scrollbarH.style.minHeight = mac_geMountainLion ? "18px" : "12px";
1.333 + }
1.334 +
1.335 + function visibleLines(display, doc, viewPort) {
1.336 + var top = display.scroller.scrollTop, height = display.wrapper.clientHeight;
1.337 + if (typeof viewPort == "number") top = viewPort;
1.338 + else if (viewPort) {top = viewPort.top; height = viewPort.bottom - viewPort.top;}
1.339 + top = Math.floor(top - paddingTop(display));
1.340 + var bottom = Math.ceil(top + height);
1.341 + return {from: lineAtHeight(doc, top), to: lineAtHeight(doc, bottom)};
1.342 + }
1.343 +
1.344 + // LINE NUMBERS
1.345 +
1.346 + function alignHorizontally(cm) {
1.347 + var display = cm.display;
1.348 + if (!display.alignWidgets && !display.gutters.firstChild) return;
1.349 + var comp = compensateForHScroll(display) - display.scroller.scrollLeft + cm.view.scrollLeft;
1.350 + var gutterW = display.gutters.offsetWidth, l = comp + "px";
1.351 + for (var n = display.lineDiv.firstChild; n; n = n.nextSibling) if (n.alignable) {
1.352 + for (var i = 0, a = n.alignable; i < a.length; ++i) a[i].style.left = l;
1.353 + }
1.354 + display.gutters.style.left = (comp + gutterW) + "px";
1.355 + }
1.356 +
1.357 + function maybeUpdateLineNumberWidth(cm) {
1.358 + if (!cm.options.lineNumbers) return false;
1.359 + var doc = cm.view.doc, last = lineNumberFor(cm.options, doc.size - 1), display = cm.display;
1.360 + if (last.length != display.lineNumChars) {
1.361 + var test = display.measure.appendChild(elt("div", [elt("div", last)],
1.362 + "CodeMirror-linenumber CodeMirror-gutter-elt"));
1.363 + var innerW = test.firstChild.offsetWidth, padding = test.offsetWidth - innerW;
1.364 + display.lineGutter.style.width = "";
1.365 + display.lineNumInnerWidth = Math.max(innerW, display.lineGutter.offsetWidth - padding);
1.366 + display.lineNumWidth = display.lineNumInnerWidth + padding;
1.367 + display.lineNumChars = display.lineNumInnerWidth ? last.length : -1;
1.368 + display.lineGutter.style.width = display.lineNumWidth + "px";
1.369 + return true;
1.370 + }
1.371 + return false;
1.372 + }
1.373 +
1.374 + function lineNumberFor(options, i) {
1.375 + return String(options.lineNumberFormatter(i + options.firstLineNumber));
1.376 + }
1.377 + function compensateForHScroll(display) {
1.378 + return display.scroller.getBoundingClientRect().left - display.sizer.getBoundingClientRect().left;
1.379 + }
1.380 +
1.381 + // DISPLAY DRAWING
1.382 +
1.383 + function updateDisplay(cm, changes, viewPort) {
1.384 + var oldFrom = cm.display.showingFrom, oldTo = cm.display.showingTo;
1.385 + var updated = updateDisplayInner(cm, changes, viewPort);
1.386 + if (updated) {
1.387 + signalLater(cm, cm, "update", cm);
1.388 + if (cm.display.showingFrom != oldFrom || cm.display.showingTo != oldTo)
1.389 + signalLater(cm, cm, "viewportChange", cm, cm.display.showingFrom, cm.display.showingTo);
1.390 + }
1.391 + updateSelection(cm);
1.392 + updateScrollbars(cm.display, cm.view.doc.height);
1.393 +
1.394 + return updated;
1.395 + }
1.396 +
1.397 + // Uses a set of changes plus the current scroll position to
1.398 + // determine which DOM updates have to be made, and makes the
1.399 + // updates.
1.400 + function updateDisplayInner(cm, changes, viewPort) {
1.401 + var display = cm.display, doc = cm.view.doc;
1.402 + if (!display.wrapper.clientWidth) {
1.403 + display.showingFrom = display.showingTo = display.viewOffset = 0;
1.404 + return;
1.405 + }
1.406 +
1.407 + // Compute the new visible window
1.408 + // If scrollTop is specified, use that to determine which lines
1.409 + // to render instead of the current scrollbar position.
1.410 + var visible = visibleLines(display, doc, viewPort);
1.411 + // Bail out if the visible area is already rendered and nothing changed.
1.412 + if (changes !== true && changes.length == 0 &&
1.413 + visible.from > display.showingFrom && visible.to < display.showingTo)
1.414 + return;
1.415 +
1.416 + if (changes && maybeUpdateLineNumberWidth(cm))
1.417 + changes = true;
1.418 + display.sizer.style.marginLeft = display.scrollbarH.style.left = display.gutters.offsetWidth + "px";
1.419 +
1.420 + // When merged lines are present, the line that needs to be
1.421 + // redrawn might not be the one that was changed.
1.422 + if (changes !== true && sawCollapsedSpans)
1.423 + for (var i = 0; i < changes.length; ++i) {
1.424 + var ch = changes[i], merged;
1.425 + while (merged = collapsedSpanAtStart(getLine(doc, ch.from))) {
1.426 + var from = merged.find().from.line;
1.427 + if (ch.diff) ch.diff -= ch.from - from;
1.428 + ch.from = from;
1.429 + }
1.430 + }
1.431 +
1.432 + // Used to determine which lines need their line numbers updated
1.433 + var positionsChangedFrom = changes === true ? 0 : Infinity;
1.434 + if (cm.options.lineNumbers && changes && changes !== true)
1.435 + for (var i = 0; i < changes.length; ++i)
1.436 + if (changes[i].diff) { positionsChangedFrom = changes[i].from; break; }
1.437 +
1.438 + var from = Math.max(visible.from - cm.options.viewportMargin, 0);
1.439 + var to = Math.min(doc.size, visible.to + cm.options.viewportMargin);
1.440 + if (display.showingFrom < from && from - display.showingFrom < 20) from = display.showingFrom;
1.441 + if (display.showingTo > to && display.showingTo - to < 20) to = Math.min(doc.size, display.showingTo);
1.442 + if (sawCollapsedSpans) {
1.443 + from = lineNo(visualLine(doc, getLine(doc, from)));
1.444 + while (to < doc.size && lineIsHidden(getLine(doc, to))) ++to;
1.445 + }
1.446 +
1.447 + // Create a range of theoretically intact lines, and punch holes
1.448 + // in that using the change info.
1.449 + var intact = changes === true ? [] :
1.450 + computeIntact([{from: display.showingFrom, to: display.showingTo}], changes);
1.451 + // Clip off the parts that won't be visible
1.452 + var intactLines = 0;
1.453 + for (var i = 0; i < intact.length; ++i) {
1.454 + var range = intact[i];
1.455 + if (range.from < from) range.from = from;
1.456 + if (range.to > to) range.to = to;
1.457 + if (range.from >= range.to) intact.splice(i--, 1);
1.458 + else intactLines += range.to - range.from;
1.459 + }
1.460 + if (intactLines == to - from && from == display.showingFrom && to == display.showingTo)
1.461 + return;
1.462 + intact.sort(function(a, b) {return a.from - b.from;});
1.463 +
1.464 + if (intactLines < (to - from) * .7) display.lineDiv.style.display = "none";
1.465 + patchDisplay(cm, from, to, intact, positionsChangedFrom);
1.466 + display.lineDiv.style.display = "";
1.467 +
1.468 + var different = from != display.showingFrom || to != display.showingTo ||
1.469 + display.lastSizeC != display.wrapper.clientHeight;
1.470 + // This is just a bogus formula that detects when the editor is
1.471 + // resized or the font size changes.
1.472 + if (different) display.lastSizeC = display.wrapper.clientHeight;
1.473 + display.showingFrom = from; display.showingTo = to;
1.474 + startWorker(cm, 100);
1.475 +
1.476 + var prevBottom = display.lineDiv.offsetTop;
1.477 + for (var node = display.lineDiv.firstChild, height; node; node = node.nextSibling) if (node.lineObj) {
1.478 + if (ie_lt8) {
1.479 + var bot = node.offsetTop + node.offsetHeight;
1.480 + height = bot - prevBottom;
1.481 + prevBottom = bot;
1.482 + } else {
1.483 + var box = node.getBoundingClientRect();
1.484 + height = box.bottom - box.top;
1.485 + }
1.486 + var diff = node.lineObj.height - height;
1.487 + if (height < 2) height = textHeight(display);
1.488 + if (diff > .001 || diff < -.001)
1.489 + updateLineHeight(node.lineObj, height);
1.490 + }
1.491 + display.viewOffset = heightAtLine(cm, getLine(doc, from));
1.492 + // Position the mover div to align with the current virtual scroll position
1.493 + display.mover.style.top = display.viewOffset + "px";
1.494 + return true;
1.495 + }
1.496 +
1.497 + function computeIntact(intact, changes) {
1.498 + for (var i = 0, l = changes.length || 0; i < l; ++i) {
1.499 + var change = changes[i], intact2 = [], diff = change.diff || 0;
1.500 + for (var j = 0, l2 = intact.length; j < l2; ++j) {
1.501 + var range = intact[j];
1.502 + if (change.to <= range.from && change.diff) {
1.503 + intact2.push({from: range.from + diff, to: range.to + diff});
1.504 + } else if (change.to <= range.from || change.from >= range.to) {
1.505 + intact2.push(range);
1.506 + } else {
1.507 + if (change.from > range.from)
1.508 + intact2.push({from: range.from, to: change.from});
1.509 + if (change.to < range.to)
1.510 + intact2.push({from: change.to + diff, to: range.to + diff});
1.511 + }
1.512 + }
1.513 + intact = intact2;
1.514 + }
1.515 + return intact;
1.516 + }
1.517 +
1.518 + function getDimensions(cm) {
1.519 + var d = cm.display, left = {}, width = {};
1.520 + for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {
1.521 + left[cm.options.gutters[i]] = n.offsetLeft;
1.522 + width[cm.options.gutters[i]] = n.offsetWidth;
1.523 + }
1.524 + return {fixedPos: compensateForHScroll(d),
1.525 + gutterTotalWidth: d.gutters.offsetWidth,
1.526 + gutterLeft: left,
1.527 + gutterWidth: width,
1.528 + wrapperWidth: d.wrapper.clientWidth};
1.529 + }
1.530 +
1.531 + function patchDisplay(cm, from, to, intact, updateNumbersFrom) {
1.532 + var dims = getDimensions(cm);
1.533 + var display = cm.display, lineNumbers = cm.options.lineNumbers;
1.534 + // IE does bad things to nodes when .innerHTML = "" is used on a parent
1.535 + // we still need widgets and markers intact to add back to the new content later
1.536 + if (!intact.length && !ie && (!webkit || !cm.display.currentWheelTarget))
1.537 + removeChildren(display.lineDiv);
1.538 + var container = display.lineDiv, cur = container.firstChild;
1.539 +
1.540 + function rm(node) {
1.541 + var next = node.nextSibling;
1.542 + if (webkit && mac && cm.display.currentWheelTarget == node) {
1.543 + node.style.display = "none";
1.544 + node.lineObj = null;
1.545 + } else {
1.546 + container.removeChild(node);
1.547 + }
1.548 + return next;
1.549 + }
1.550 +
1.551 + var nextIntact = intact.shift(), lineNo = from;
1.552 + cm.view.doc.iter(from, to, function(line) {
1.553 + if (nextIntact && nextIntact.to == lineNo) nextIntact = intact.shift();
1.554 + if (lineIsHidden(line)) {
1.555 + if (line.height != 0) updateLineHeight(line, 0);
1.556 + } else if (nextIntact && nextIntact.from <= lineNo && nextIntact.to > lineNo) {
1.557 + // This line is intact. Skip to the actual node. Update its
1.558 + // line number if needed.
1.559 + while (cur.lineObj != line) cur = rm(cur);
1.560 + if (lineNumbers && updateNumbersFrom <= lineNo && cur.lineNumber)
1.561 + setTextContent(cur.lineNumber, lineNumberFor(cm.options, lineNo));
1.562 + cur = cur.nextSibling;
1.563 + } else {
1.564 + // This line needs to be generated.
1.565 + var lineNode = buildLineElement(cm, line, lineNo, dims);
1.566 + container.insertBefore(lineNode, cur);
1.567 + lineNode.lineObj = line;
1.568 + }
1.569 + ++lineNo;
1.570 + });
1.571 + while (cur) cur = rm(cur);
1.572 + }
1.573 +
1.574 + function buildLineElement(cm, line, lineNo, dims) {
1.575 + var lineElement = lineContent(cm, line);
1.576 + var markers = line.gutterMarkers, display = cm.display;
1.577 +
1.578 + if (!cm.options.lineNumbers && !markers && !line.bgClass && !line.wrapClass &&
1.579 + (!line.widgets || !line.widgets.length)) return lineElement;
1.580 +
1.581 + // Lines with gutter elements or a background class need
1.582 + // to be wrapped again, and have the extra elements added
1.583 + // to the wrapper div
1.584 +
1.585 + var wrap = elt("div", null, line.wrapClass, "position: relative");
1.586 + if (cm.options.lineNumbers || markers) {
1.587 + var gutterWrap = wrap.appendChild(elt("div", null, null, "position: absolute; left: " +
1.588 + dims.fixedPos + "px"));
1.589 + wrap.alignable = [gutterWrap];
1.590 + if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
1.591 + wrap.lineNumber = gutterWrap.appendChild(
1.592 + elt("div", lineNumberFor(cm.options, lineNo),
1.593 + "CodeMirror-linenumber CodeMirror-gutter-elt",
1.594 + "left: " + dims.gutterLeft["CodeMirror-linenumbers"] + "px; width: "
1.595 + + display.lineNumInnerWidth + "px"));
1.596 + if (markers)
1.597 + for (var k = 0; k < cm.options.gutters.length; ++k) {
1.598 + var id = cm.options.gutters[k], found = markers.hasOwnProperty(id) && markers[id];
1.599 + if (found)
1.600 + gutterWrap.appendChild(elt("div", [found], "CodeMirror-gutter-elt", "left: " +
1.601 + dims.gutterLeft[id] + "px; width: " + dims.gutterWidth[id] + "px"));
1.602 + }
1.603 + }
1.604 + // Kludge to make sure the styled element lies behind the selection (by z-index)
1.605 + if (line.bgClass)
1.606 + wrap.appendChild(elt("div", "\u00a0", line.bgClass + " CodeMirror-linebackground"));
1.607 + wrap.appendChild(lineElement);
1.608 + if (line.widgets)
1.609 + for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
1.610 + var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");
1.611 + node.widget = widget;
1.612 + if (widget.noHScroll) {
1.613 + (wrap.alignable || (wrap.alignable = [])).push(node);
1.614 + var width = dims.wrapperWidth;
1.615 + node.style.left = dims.fixedPos + "px";
1.616 + if (!widget.coverGutter) {
1.617 + width -= dims.gutterTotalWidth;
1.618 + node.style.paddingLeft = dims.gutterTotalWidth + "px";
1.619 + }
1.620 + node.style.width = width + "px";
1.621 + }
1.622 + if (widget.coverGutter) {
1.623 + node.style.zIndex = 5;
1.624 + node.style.position = "relative";
1.625 + if (!widget.noHScroll) node.style.marginLeft = -dims.gutterTotalWidth + "px";
1.626 + }
1.627 + if (widget.above)
1.628 + wrap.insertBefore(node, cm.options.lineNumbers && line.height != 0 ? gutterWrap : lineElement);
1.629 + else
1.630 + wrap.appendChild(node);
1.631 + }
1.632 +
1.633 + if (ie_lt8) wrap.style.zIndex = 2;
1.634 + return wrap;
1.635 + }
1.636 +
1.637 + // SELECTION / CURSOR
1.638 +
1.639 + function updateSelection(cm) {
1.640 + var display = cm.display;
1.641 + var collapsed = posEq(cm.view.sel.from, cm.view.sel.to);
1.642 + if (collapsed || cm.options.showCursorWhenSelecting)
1.643 + updateSelectionCursor(cm);
1.644 + else
1.645 + display.cursor.style.display = display.otherCursor.style.display = "none";
1.646 + if (!collapsed)
1.647 + updateSelectionRange(cm);
1.648 + else
1.649 + display.selectionDiv.style.display = "none";
1.650 +
1.651 + // Move the hidden textarea near the cursor to prevent scrolling artifacts
1.652 + var headPos = cursorCoords(cm, cm.view.sel.head, "div");
1.653 + var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();
1.654 + display.inputDiv.style.top = Math.max(0, Math.min(display.wrapper.clientHeight - 10,
1.655 + headPos.top + lineOff.top - wrapOff.top)) + "px";
1.656 + display.inputDiv.style.left = Math.max(0, Math.min(display.wrapper.clientWidth - 10,
1.657 + headPos.left + lineOff.left - wrapOff.left)) + "px";
1.658 + }
1.659 +
1.660 + // No selection, plain cursor
1.661 + function updateSelectionCursor(cm) {
1.662 + var display = cm.display, pos = cursorCoords(cm, cm.view.sel.head, "div");
1.663 + display.cursor.style.left = pos.left + "px";
1.664 + display.cursor.style.top = pos.top + "px";
1.665 + display.cursor.style.height = Math.max(0, pos.bottom - pos.top) * cm.options.cursorHeight + "px";
1.666 + display.cursor.style.display = "";
1.667 +
1.668 + if (pos.other) {
1.669 + display.otherCursor.style.display = "";
1.670 + display.otherCursor.style.left = pos.other.left + "px";
1.671 + display.otherCursor.style.top = pos.other.top + "px";
1.672 + display.otherCursor.style.height = (pos.other.bottom - pos.other.top) * .85 + "px";
1.673 + } else { display.otherCursor.style.display = "none"; }
1.674 + }
1.675 +
1.676 + // Highlight selection
1.677 + function updateSelectionRange(cm) {
1.678 + var display = cm.display, doc = cm.view.doc, sel = cm.view.sel;
1.679 + var fragment = document.createDocumentFragment();
1.680 + var clientWidth = display.lineSpace.offsetWidth, pl = paddingLeft(cm.display);
1.681 +
1.682 + function add(left, top, width, bottom) {
1.683 + if (top < 0) top = 0;
1.684 + fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
1.685 + "px; top: " + top + "px; width: " + (width == null ? clientWidth - left : width) +
1.686 + "px; height: " + (bottom - top) + "px"));
1.687 + }
1.688 +
1.689 + function drawForLine(line, fromArg, toArg, retTop) {
1.690 + var lineObj = getLine(doc, line);
1.691 + var lineLen = lineObj.text.length, rVal = retTop ? Infinity : -Infinity;
1.692 + function coords(ch) {
1.693 + return charCoords(cm, {line: line, ch: ch}, "div", lineObj);
1.694 + }
1.695 +
1.696 + iterateBidiSections(getOrder(lineObj), fromArg || 0, toArg == null ? lineLen : toArg, function(from, to, dir) {
1.697 + var leftPos = coords(dir == "rtl" ? to - 1 : from);
1.698 + var rightPos = coords(dir == "rtl" ? from : to - 1);
1.699 + var left = leftPos.left, right = rightPos.right;
1.700 + if (rightPos.top - leftPos.top > 3) { // Different lines, draw top part
1.701 + add(left, leftPos.top, null, leftPos.bottom);
1.702 + left = pl;
1.703 + if (leftPos.bottom < rightPos.top) add(left, leftPos.bottom, null, rightPos.top);
1.704 + }
1.705 + if (toArg == null && to == lineLen) right = clientWidth;
1.706 + if (fromArg == null && from == 0) left = pl;
1.707 + rVal = retTop ? Math.min(rightPos.top, rVal) : Math.max(rightPos.bottom, rVal);
1.708 + if (left < pl + 1) left = pl;
1.709 + add(left, rightPos.top, right - left, rightPos.bottom);
1.710 + });
1.711 + return rVal;
1.712 + }
1.713 +
1.714 + if (sel.from.line == sel.to.line) {
1.715 + drawForLine(sel.from.line, sel.from.ch, sel.to.ch);
1.716 + } else {
1.717 + var fromObj = getLine(doc, sel.from.line);
1.718 + var cur = fromObj, merged, path = [sel.from.line, sel.from.ch], singleLine;
1.719 + while (merged = collapsedSpanAtEnd(cur)) {
1.720 + var found = merged.find();
1.721 + path.push(found.from.ch, found.to.line, found.to.ch);
1.722 + if (found.to.line == sel.to.line) {
1.723 + path.push(sel.to.ch);
1.724 + singleLine = true;
1.725 + break;
1.726 + }
1.727 + cur = getLine(doc, found.to.line);
1.728 + }
1.729 +
1.730 + // This is a single, merged line
1.731 + if (singleLine) {
1.732 + for (var i = 0; i < path.length; i += 3)
1.733 + drawForLine(path[i], path[i+1], path[i+2]);
1.734 + } else {
1.735 + var middleTop, middleBot, toObj = getLine(doc, sel.to.line);
1.736 + if (sel.from.ch)
1.737 + // Draw the first line of selection.
1.738 + middleTop = drawForLine(sel.from.line, sel.from.ch, null, false);
1.739 + else
1.740 + // Simply include it in the middle block.
1.741 + middleTop = heightAtLine(cm, fromObj) - display.viewOffset;
1.742 +
1.743 + if (!sel.to.ch)
1.744 + middleBot = heightAtLine(cm, toObj) - display.viewOffset;
1.745 + else
1.746 + middleBot = drawForLine(sel.to.line, collapsedSpanAtStart(toObj) ? null : 0, sel.to.ch, true);
1.747 +
1.748 + if (middleTop < middleBot) add(pl, middleTop, null, middleBot);
1.749 + }
1.750 + }
1.751 +
1.752 + removeChildrenAndAdd(display.selectionDiv, fragment);
1.753 + display.selectionDiv.style.display = "";
1.754 + }
1.755 +
1.756 + // Cursor-blinking
1.757 + function restartBlink(cm) {
1.758 + var display = cm.display;
1.759 + clearInterval(display.blinker);
1.760 + var on = true;
1.761 + display.cursor.style.visibility = display.otherCursor.style.visibility = "";
1.762 + display.blinker = setInterval(function() {
1.763 + if (!display.cursor.offsetHeight) return;
1.764 + display.cursor.style.visibility = display.otherCursor.style.visibility = (on = !on) ? "" : "hidden";
1.765 + }, cm.options.cursorBlinkRate);
1.766 + }
1.767 +
1.768 + // HIGHLIGHT WORKER
1.769 +
1.770 + function startWorker(cm, time) {
1.771 + if (cm.view.frontier < cm.display.showingTo)
1.772 + cm.view.highlight.set(time, bind(highlightWorker, cm));
1.773 + }
1.774 +
1.775 + function highlightWorker(cm) {
1.776 + var view = cm.view, doc = view.doc;
1.777 + if (view.frontier >= cm.display.showingTo) return;
1.778 + var end = +new Date + cm.options.workTime;
1.779 + var state = copyState(view.mode, getStateBefore(cm, view.frontier));
1.780 + var changed = [], prevChange;
1.781 + doc.iter(view.frontier, Math.min(doc.size, cm.display.showingTo + 500), function(line) {
1.782 + if (view.frontier >= cm.display.showingFrom) { // Visible
1.783 + if (highlightLine(cm, line, state) && view.frontier >= cm.display.showingFrom) {
1.784 + if (prevChange && prevChange.end == view.frontier) prevChange.end++;
1.785 + else changed.push(prevChange = {start: view.frontier, end: view.frontier + 1});
1.786 + }
1.787 + line.stateAfter = copyState(view.mode, state);
1.788 + } else {
1.789 + processLine(cm, line, state);
1.790 + line.stateAfter = view.frontier % 5 == 0 ? copyState(view.mode, state) : null;
1.791 + }
1.792 + ++view.frontier;
1.793 + if (+new Date > end) {
1.794 + startWorker(cm, cm.options.workDelay);
1.795 + return true;
1.796 + }
1.797 + });
1.798 + if (changed.length)
1.799 + operation(cm, function() {
1.800 + for (var i = 0; i < changed.length; ++i)
1.801 + regChange(this, changed[i].start, changed[i].end);
1.802 + })();
1.803 + }
1.804 +
1.805 + // Finds the line to start with when starting a parse. Tries to
1.806 + // find a line with a stateAfter, so that it can start with a
1.807 + // valid state. If that fails, it returns the line with the
1.808 + // smallest indentation, which tends to need the least context to
1.809 + // parse correctly.
1.810 + function findStartLine(cm, n) {
1.811 + var minindent, minline, doc = cm.view.doc;
1.812 + for (var search = n, lim = n - 100; search > lim; --search) {
1.813 + if (search == 0) return 0;
1.814 + var line = getLine(doc, search-1);
1.815 + if (line.stateAfter) return search;
1.816 + var indented = countColumn(line.text, null, cm.options.tabSize);
1.817 + if (minline == null || minindent > indented) {
1.818 + minline = search - 1;
1.819 + minindent = indented;
1.820 + }
1.821 + }
1.822 + return minline;
1.823 + }
1.824 +
1.825 + function getStateBefore(cm, n) {
1.826 + var view = cm.view;
1.827 + var pos = findStartLine(cm, n), state = pos && getLine(view.doc, pos-1).stateAfter;
1.828 + if (!state) state = startState(view.mode);
1.829 + else state = copyState(view.mode, state);
1.830 + view.doc.iter(pos, n, function(line) {
1.831 + processLine(cm, line, state);
1.832 + var save = pos == n - 1 || pos % 5 == 0 || pos >= view.showingFrom && pos < view.showingTo;
1.833 + line.stateAfter = save ? copyState(view.mode, state) : null;
1.834 + ++pos;
1.835 + });
1.836 + return state;
1.837 + }
1.838 +
1.839 + // POSITION MEASUREMENT
1.840 +
1.841 + function paddingTop(display) {return display.lineSpace.offsetTop;}
1.842 + function paddingLeft(display) {
1.843 + var e = removeChildrenAndAdd(display.measure, elt("pre")).appendChild(elt("span", "x"));
1.844 + return e.offsetLeft;
1.845 + }
1.846 +
1.847 + function measureChar(cm, line, ch, data) {
1.848 + var data = data || measureLine(cm, line), dir = -1;
1.849 + for (var pos = ch;; pos += dir) {
1.850 + var r = data[pos];
1.851 + if (r) break;
1.852 + if (dir < 0 && pos == 0) dir = 1;
1.853 + }
1.854 + return {left: pos < ch ? r.right : r.left,
1.855 + right: pos > ch ? r.left : r.right,
1.856 + top: r.top, bottom: r.bottom};
1.857 + }
1.858 +
1.859 + function measureLine(cm, line) {
1.860 + // First look in the cache
1.861 + var display = cm.display, cache = cm.display.measureLineCache;
1.862 + for (var i = 0; i < cache.length; ++i) {
1.863 + var memo = cache[i];
1.864 + if (memo.text == line.text && memo.markedSpans == line.markedSpans &&
1.865 + display.scroller.clientWidth == memo.width)
1.866 + return memo.measure;
1.867 + }
1.868 +
1.869 + var measure = measureLineInner(cm, line);
1.870 + // Store result in the cache
1.871 + var memo = {text: line.text, width: display.scroller.clientWidth,
1.872 + markedSpans: line.markedSpans, measure: measure};
1.873 + if (cache.length == 16) cache[++display.measureLineCachePos % 16] = memo;
1.874 + else cache.push(memo);
1.875 + return measure;
1.876 + }
1.877 +
1.878 + function measureLineInner(cm, line) {
1.879 + var display = cm.display, measure = emptyArray(line.text.length);
1.880 + var pre = lineContent(cm, line, measure);
1.881 +
1.882 + // IE does not cache element positions of inline elements between
1.883 + // calls to getBoundingClientRect. This makes the loop below,
1.884 + // which gathers the positions of all the characters on the line,
1.885 + // do an amount of layout work quadratic to the number of
1.886 + // characters. When line wrapping is off, we try to improve things
1.887 + // by first subdividing the line into a bunch of inline blocks, so
1.888 + // that IE can reuse most of the layout information from caches
1.889 + // for those blocks. This does interfere with line wrapping, so it
1.890 + // doesn't work when wrapping is on, but in that case the
1.891 + // situation is slightly better, since IE does cache line-wrapping
1.892 + // information and only recomputes per-line.
1.893 + if (ie && !ie_lt8 && !cm.options.lineWrapping && pre.childNodes.length > 100) {
1.894 + var fragment = document.createDocumentFragment();
1.895 + var chunk = 10, n = pre.childNodes.length;
1.896 + for (var i = 0, chunks = Math.ceil(n / chunk); i < chunks; ++i) {
1.897 + var wrap = elt("div", null, null, "display: inline-block");
1.898 + for (var j = 0; j < chunk && n; ++j) {
1.899 + wrap.appendChild(pre.firstChild);
1.900 + --n;
1.901 + }
1.902 + fragment.appendChild(wrap);
1.903 + }
1.904 + pre.appendChild(fragment);
1.905 + }
1.906 +
1.907 + removeChildrenAndAdd(display.measure, pre);
1.908 +
1.909 + var outer = display.lineDiv.getBoundingClientRect();
1.910 + var vranges = [], data = emptyArray(line.text.length), maxBot = pre.offsetHeight;
1.911 + for (var i = 0, cur; i < measure.length; ++i) if (cur = measure[i]) {
1.912 + var size = cur.getBoundingClientRect();
1.913 + var top = Math.max(0, size.top - outer.top), bot = Math.min(size.bottom - outer.top, maxBot);
1.914 + for (var j = 0; j < vranges.length; j += 2) {
1.915 + var rtop = vranges[j], rbot = vranges[j+1];
1.916 + if (rtop > bot || rbot < top) continue;
1.917 + if (rtop <= top && rbot >= bot ||
1.918 + top <= rtop && bot >= rbot ||
1.919 + Math.min(bot, rbot) - Math.max(top, rtop) >= (bot - top) >> 1) {
1.920 + vranges[j] = Math.min(top, rtop);
1.921 + vranges[j+1] = Math.max(bot, rbot);
1.922 + break;
1.923 + }
1.924 + }
1.925 + if (j == vranges.length) vranges.push(top, bot);
1.926 + data[i] = {left: size.left - outer.left, right: size.right - outer.left, top: j};
1.927 + }
1.928 + for (var i = 0, cur; i < data.length; ++i) if (cur = data[i]) {
1.929 + var vr = cur.top;
1.930 + cur.top = vranges[vr]; cur.bottom = vranges[vr+1];
1.931 + }
1.932 + return data;
1.933 + }
1.934 +
1.935 + function clearCaches(cm) {
1.936 + cm.display.measureLineCache.length = cm.display.measureLineCachePos = 0;
1.937 + cm.display.cachedCharWidth = cm.display.cachedTextHeight = null;
1.938 + cm.view.maxLineChanged = true;
1.939 + }
1.940 +
1.941 + // Context is one of "line", "div" (display.lineDiv), "local"/null (editor), or "page"
1.942 + function intoCoordSystem(cm, lineObj, rect, context) {
1.943 + if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
1.944 + var size = lineObj.widgets[i].node.offsetHeight;
1.945 + rect.top += size; rect.bottom += size;
1.946 + }
1.947 + if (context == "line") return rect;
1.948 + if (!context) context = "local";
1.949 + var yOff = heightAtLine(cm, lineObj);
1.950 + if (context != "local") yOff -= cm.display.viewOffset;
1.951 + if (context == "page") {
1.952 + var lOff = cm.display.lineSpace.getBoundingClientRect();
1.953 + yOff += lOff.top + (window.pageYOffset || (document.documentElement || document.body).scrollTop);
1.954 + var xOff = lOff.left + (window.pageXOffset || (document.documentElement || document.body).scrollLeft);
1.955 + rect.left += xOff; rect.right += xOff;
1.956 + }
1.957 + rect.top += yOff; rect.bottom += yOff;
1.958 + return rect;
1.959 + }
1.960 +
1.961 + function charCoords(cm, pos, context, lineObj) {
1.962 + if (!lineObj) lineObj = getLine(cm.view.doc, pos.line);
1.963 + return intoCoordSystem(cm, lineObj, measureChar(cm, lineObj, pos.ch), context);
1.964 + }
1.965 +
1.966 + function cursorCoords(cm, pos, context, lineObj, measurement) {
1.967 + lineObj = lineObj || getLine(cm.view.doc, pos.line);
1.968 + if (!measurement) measurement = measureLine(cm, lineObj);
1.969 + function get(ch, right) {
1.970 + var m = measureChar(cm, lineObj, ch, measurement);
1.971 + if (right) m.left = m.right; else m.right = m.left;
1.972 + return intoCoordSystem(cm, lineObj, m, context);
1.973 + }
1.974 + var order = getOrder(lineObj), ch = pos.ch;
1.975 + if (!order) return get(ch);
1.976 + var main, other, linedir = order[0].level;
1.977 + for (var i = 0; i < order.length; ++i) {
1.978 + var part = order[i], rtl = part.level % 2, nb, here;
1.979 + if (part.from < ch && part.to > ch) return get(ch, rtl);
1.980 + var left = rtl ? part.to : part.from, right = rtl ? part.from : part.to;
1.981 + if (left == ch) {
1.982 + // Opera and IE return bogus offsets and widths for edges
1.983 + // where the direction flips, but only for the side with the
1.984 + // lower level. So we try to use the side with the higher
1.985 + // level.
1.986 + if (i && part.level < (nb = order[i-1]).level) here = get(nb.level % 2 ? nb.from : nb.to - 1, true);
1.987 + else here = get(rtl && part.from != part.to ? ch - 1 : ch);
1.988 + if (rtl == linedir) main = here; else other = here;
1.989 + } else if (right == ch) {
1.990 + var nb = i < order.length - 1 && order[i+1];
1.991 + if (!rtl && nb && nb.from == nb.to) continue;
1.992 + if (nb && part.level < nb.level) here = get(nb.level % 2 ? nb.to - 1 : nb.from);
1.993 + else here = get(rtl ? ch : ch - 1, true);
1.994 + if (rtl == linedir) main = here; else other = here;
1.995 + }
1.996 + }
1.997 + if (linedir && !ch) other = get(order[0].to - 1);
1.998 + if (!main) return other;
1.999 + if (other) main.other = other;
1.1000 + return main;
1.1001 + }
1.1002 +
1.1003 + // Coords must be lineSpace-local
1.1004 + function coordsChar(cm, x, y) {
1.1005 + var doc = cm.view.doc;
1.1006 + y += cm.display.viewOffset;
1.1007 + if (y < 0) return {line: 0, ch: 0, outside: true};
1.1008 + var lineNo = lineAtHeight(doc, y);
1.1009 + if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc, doc.size - 1).text.length};
1.1010 + if (x < 0) x = 0;
1.1011 +
1.1012 + for (;;) {
1.1013 + var lineObj = getLine(doc, lineNo);
1.1014 + var found = coordsCharInner(cm, lineObj, lineNo, x, y);
1.1015 + var merged = collapsedSpanAtEnd(lineObj);
1.1016 + if (merged && found.ch == lineRight(lineObj))
1.1017 + lineNo = merged.find().to.line;
1.1018 + else
1.1019 + return found;
1.1020 + }
1.1021 + }
1.1022 +
1.1023 + function coordsCharInner(cm, lineObj, lineNo, x, y) {
1.1024 + var innerOff = y - heightAtLine(cm, lineObj);
1.1025 + var wrongLine = false, cWidth = cm.display.wrapper.clientWidth;
1.1026 + var measurement = measureLine(cm, lineObj);
1.1027 +
1.1028 + function getX(ch) {
1.1029 + var sp = cursorCoords(cm, {line: lineNo, ch: ch}, "line",
1.1030 + lineObj, measurement);
1.1031 + wrongLine = true;
1.1032 + if (innerOff > sp.bottom) return Math.max(0, sp.left - cWidth);
1.1033 + else if (innerOff < sp.top) return sp.left + cWidth;
1.1034 + else wrongLine = false;
1.1035 + return sp.left;
1.1036 + }
1.1037 +
1.1038 + var bidi = getOrder(lineObj), dist = lineObj.text.length;
1.1039 + var from = lineLeft(lineObj), to = lineRight(lineObj);
1.1040 + var fromX = paddingLeft(cm.display), toX = getX(to);
1.1041 +
1.1042 + if (x > toX) return {line: lineNo, ch: to, outside: wrongLine};
1.1043 + // Do a binary search between these bounds.
1.1044 + for (;;) {
1.1045 + if (bidi ? to == from || to == moveVisually(lineObj, from, 1) : to - from <= 1) {
1.1046 + var after = x - fromX < toX - x, ch = after ? from : to;
1.1047 + while (isExtendingChar.test(lineObj.text.charAt(ch))) ++ch;
1.1048 + return {line: lineNo, ch: ch, after: after, outside: wrongLine};
1.1049 + }
1.1050 + var step = Math.ceil(dist / 2), middle = from + step;
1.1051 + if (bidi) {
1.1052 + middle = from;
1.1053 + for (var i = 0; i < step; ++i) middle = moveVisually(lineObj, middle, 1);
1.1054 + }
1.1055 + var middleX = getX(middle);
1.1056 + if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; dist -= step;}
1.1057 + else {from = middle; fromX = middleX; dist = step;}
1.1058 + }
1.1059 + }
1.1060 +
1.1061 + var measureText;
1.1062 + function textHeight(display) {
1.1063 + if (display.cachedTextHeight != null) return display.cachedTextHeight;
1.1064 + if (measureText == null) {
1.1065 + measureText = elt("pre");
1.1066 + // Measure a bunch of lines, for browsers that compute
1.1067 + // fractional heights.
1.1068 + for (var i = 0; i < 49; ++i) {
1.1069 + measureText.appendChild(document.createTextNode("x"));
1.1070 + measureText.appendChild(elt("br"));
1.1071 + }
1.1072 + measureText.appendChild(document.createTextNode("x"));
1.1073 + }
1.1074 + removeChildrenAndAdd(display.measure, measureText);
1.1075 + var height = measureText.offsetHeight / 50;
1.1076 + if (height > 3) display.cachedTextHeight = height;
1.1077 + removeChildren(display.measure);
1.1078 + return height || 1;
1.1079 + }
1.1080 +
1.1081 + function charWidth(display) {
1.1082 + if (display.cachedCharWidth != null) return display.cachedCharWidth;
1.1083 + var anchor = elt("span", "x");
1.1084 + var pre = elt("pre", [anchor]);
1.1085 + removeChildrenAndAdd(display.measure, pre);
1.1086 + var width = anchor.offsetWidth;
1.1087 + if (width > 2) display.cachedCharWidth = width;
1.1088 + return width || 10;
1.1089 + }
1.1090 +
1.1091 + // OPERATIONS
1.1092 +
1.1093 + // Operations are used to wrap changes in such a way that each
1.1094 + // change won't have to update the cursor and display (which would
1.1095 + // be awkward, slow, and error-prone), but instead updates are
1.1096 + // batched and then all combined and executed at once.
1.1097 +
1.1098 + function startOperation(cm) {
1.1099 + if (cm.curOp) ++cm.curOp.depth;
1.1100 + else cm.curOp = {
1.1101 + // Nested operations delay update until the outermost one
1.1102 + // finishes.
1.1103 + depth: 1,
1.1104 + // An array of ranges of lines that have to be updated. See
1.1105 + // updateDisplay.
1.1106 + changes: [],
1.1107 + delayedCallbacks: [],
1.1108 + updateInput: null,
1.1109 + userSelChange: null,
1.1110 + textChanged: null,
1.1111 + selectionChanged: false,
1.1112 + updateMaxLine: false,
1.1113 + id: ++cm.nextOpId
1.1114 + };
1.1115 + }
1.1116 +
1.1117 + function endOperation(cm) {
1.1118 + var op = cm.curOp;
1.1119 + if (--op.depth) return;
1.1120 + cm.curOp = null;
1.1121 + var view = cm.view, display = cm.display;
1.1122 + if (op.updateMaxLine) computeMaxLength(view);
1.1123 + if (view.maxLineChanged && !cm.options.lineWrapping) {
1.1124 + var width = measureChar(cm, view.maxLine, view.maxLine.text.length).right;
1.1125 + display.sizer.style.minWidth = (width + 3 + scrollerCutOff) + "px";
1.1126 + view.maxLineChanged = false;
1.1127 + }
1.1128 + var newScrollPos, updated;
1.1129 + if (op.selectionChanged) {
1.1130 + var coords = cursorCoords(cm, view.sel.head);
1.1131 + newScrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
1.1132 + }
1.1133 + if (op.changes.length || newScrollPos && newScrollPos.scrollTop != null)
1.1134 + updated = updateDisplay(cm, op.changes, newScrollPos && newScrollPos.scrollTop);
1.1135 + if (!updated && op.selectionChanged) updateSelection(cm);
1.1136 + if (newScrollPos) scrollCursorIntoView(cm);
1.1137 + if (op.selectionChanged) restartBlink(cm);
1.1138 +
1.1139 + if (view.focused && op.updateInput)
1.1140 + resetInput(cm, op.userSelChange);
1.1141 +
1.1142 + if (op.textChanged)
1.1143 + signal(cm, "change", cm, op.textChanged);
1.1144 + if (op.selectionChanged) signal(cm, "cursorActivity", cm);
1.1145 + for (var i = 0; i < op.delayedCallbacks.length; ++i) op.delayedCallbacks[i](cm);
1.1146 + }
1.1147 +
1.1148 + // Wraps a function in an operation. Returns the wrapped function.
1.1149 + function operation(cm1, f) {
1.1150 + return function() {
1.1151 + var cm = cm1 || this;
1.1152 + startOperation(cm);
1.1153 + try {var result = f.apply(cm, arguments);}
1.1154 + finally {endOperation(cm);}
1.1155 + return result;
1.1156 + };
1.1157 + }
1.1158 +
1.1159 + function regChange(cm, from, to, lendiff) {
1.1160 + cm.curOp.changes.push({from: from, to: to, diff: lendiff});
1.1161 + }
1.1162 +
1.1163 + // INPUT HANDLING
1.1164 +
1.1165 + function slowPoll(cm) {
1.1166 + if (cm.view.pollingFast) return;
1.1167 + cm.display.poll.set(cm.options.pollInterval, function() {
1.1168 + readInput(cm);
1.1169 + if (cm.view.focused) slowPoll(cm);
1.1170 + });
1.1171 + }
1.1172 +
1.1173 + function fastPoll(cm) {
1.1174 + var missed = false;
1.1175 + cm.display.pollingFast = true;
1.1176 + function p() {
1.1177 + var changed = readInput(cm);
1.1178 + if (!changed && !missed) {missed = true; cm.display.poll.set(60, p);}
1.1179 + else {cm.display.pollingFast = false; slowPoll(cm);}
1.1180 + }
1.1181 + cm.display.poll.set(20, p);
1.1182 + }
1.1183 +
1.1184 + // prevInput is a hack to work with IME. If we reset the textarea
1.1185 + // on every change, that breaks IME. So we look for changes
1.1186 + // compared to the previous content instead. (Modern browsers have
1.1187 + // events that indicate IME taking place, but these are not widely
1.1188 + // supported or compatible enough yet to rely on.)
1.1189 + function readInput(cm) {
1.1190 + var input = cm.display.input, prevInput = cm.display.prevInput, view = cm.view, sel = view.sel;
1.1191 + if (!view.focused || hasSelection(input) || isReadOnly(cm)) return false;
1.1192 + var text = input.value;
1.1193 + if (text == prevInput && posEq(sel.from, sel.to)) return false;
1.1194 + startOperation(cm);
1.1195 + view.sel.shift = false;
1.1196 + var same = 0, l = Math.min(prevInput.length, text.length);
1.1197 + while (same < l && prevInput[same] == text[same]) ++same;
1.1198 + var from = sel.from, to = sel.to;
1.1199 + if (same < prevInput.length)
1.1200 + from = {line: from.line, ch: from.ch - (prevInput.length - same)};
1.1201 + else if (view.overwrite && posEq(from, to) && !cm.display.pasteIncoming)
1.1202 + to = {line: to.line, ch: Math.min(getLine(cm.view.doc, to.line).text.length, to.ch + (text.length - same))};
1.1203 + var updateInput = cm.curOp.updateInput;
1.1204 + updateDoc(cm, from, to, splitLines(text.slice(same)), "end",
1.1205 + cm.display.pasteIncoming ? "paste" : "input", {from: from, to: to});
1.1206 + cm.curOp.updateInput = updateInput;
1.1207 + if (text.length > 1000) input.value = cm.display.prevInput = "";
1.1208 + else cm.display.prevInput = text;
1.1209 + endOperation(cm);
1.1210 + cm.display.pasteIncoming = false;
1.1211 + return true;
1.1212 + }
1.1213 +
1.1214 + function resetInput(cm, user) {
1.1215 + var view = cm.view, minimal, selected;
1.1216 + if (!posEq(view.sel.from, view.sel.to)) {
1.1217 + cm.display.prevInput = "";
1.1218 + minimal = hasCopyEvent &&
1.1219 + (view.sel.to.line - view.sel.from.line > 100 || (selected = cm.getSelection()).length > 1000);
1.1220 + if (minimal) cm.display.input.value = "-";
1.1221 + else cm.display.input.value = selected || cm.getSelection();
1.1222 + if (view.focused) selectInput(cm.display.input);
1.1223 + } else if (user) cm.display.prevInput = cm.display.input.value = "";
1.1224 + cm.display.inaccurateSelection = minimal;
1.1225 + }
1.1226 +
1.1227 + function focusInput(cm) {
1.1228 + if (cm.options.readOnly != "nocursor" && (ie || document.activeElement != cm.display.input))
1.1229 + cm.display.input.focus();
1.1230 + }
1.1231 +
1.1232 + function isReadOnly(cm) {
1.1233 + return cm.options.readOnly || cm.view.cantEdit;
1.1234 + }
1.1235 +
1.1236 + // EVENT HANDLERS
1.1237 +
1.1238 + function registerEventHandlers(cm) {
1.1239 + var d = cm.display;
1.1240 + on(d.scroller, "mousedown", operation(cm, onMouseDown));
1.1241 + on(d.scroller, "dblclick", operation(cm, e_preventDefault));
1.1242 + on(d.lineSpace, "selectstart", function(e) {
1.1243 + if (!mouseEventInWidget(d, e)) e_preventDefault(e);
1.1244 + });
1.1245 + // Gecko browsers fire contextmenu *after* opening the menu, at
1.1246 + // which point we can't mess with it anymore. Context menu is
1.1247 + // handled in onMouseDown for Gecko.
1.1248 + if (!gecko) on(d.scroller, "contextmenu", function(e) {onContextMenu(cm, e);});
1.1249 +
1.1250 + on(d.scroller, "scroll", function() {
1.1251 + setScrollTop(cm, d.scroller.scrollTop);
1.1252 + setScrollLeft(cm, d.scroller.scrollLeft, true);
1.1253 + signal(cm, "scroll", cm);
1.1254 + });
1.1255 + on(d.scrollbarV, "scroll", function() {
1.1256 + setScrollTop(cm, d.scrollbarV.scrollTop);
1.1257 + });
1.1258 + on(d.scrollbarH, "scroll", function() {
1.1259 + setScrollLeft(cm, d.scrollbarH.scrollLeft);
1.1260 + });
1.1261 +
1.1262 + on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
1.1263 + on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});
1.1264 +
1.1265 + function reFocus() { if (cm.view.focused) setTimeout(bind(focusInput, cm), 0); }
1.1266 + on(d.scrollbarH, "mousedown", reFocus);
1.1267 + on(d.scrollbarV, "mousedown", reFocus);
1.1268 + // Prevent wrapper from ever scrolling
1.1269 + on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });
1.1270 + on(window, "resize", function resizeHandler() {
1.1271 + // Might be a text scaling operation, clear size caches.
1.1272 + d.cachedCharWidth = d.cachedTextHeight = null;
1.1273 + clearCaches(cm);
1.1274 + if (d.wrapper.parentNode) updateDisplay(cm, true);
1.1275 + else off(window, "resize", resizeHandler);
1.1276 + });
1.1277 +
1.1278 + on(d.input, "keyup", operation(cm, function(e) {
1.1279 + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
1.1280 + if (e_prop(e, "keyCode") == 16) cm.view.sel.shift = false;
1.1281 + }));
1.1282 + on(d.input, "input", bind(fastPoll, cm));
1.1283 + on(d.input, "keydown", operation(cm, onKeyDown));
1.1284 + on(d.input, "keypress", operation(cm, onKeyPress));
1.1285 + on(d.input, "focus", bind(onFocus, cm));
1.1286 + on(d.input, "blur", bind(onBlur, cm));
1.1287 +
1.1288 + function drag_(e) {
1.1289 + if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
1.1290 + e_stop(e);
1.1291 + }
1.1292 + if (cm.options.dragDrop) {
1.1293 + on(d.scroller, "dragstart", function(e){onDragStart(cm, e);});
1.1294 + on(d.scroller, "dragenter", drag_);
1.1295 + on(d.scroller, "dragover", drag_);
1.1296 + on(d.scroller, "drop", operation(cm, onDrop));
1.1297 + }
1.1298 + on(d.scroller, "paste", function(){focusInput(cm); fastPoll(cm);});
1.1299 + on(d.input, "paste", function() {
1.1300 + d.pasteIncoming = true;
1.1301 + fastPoll(cm);
1.1302 + });
1.1303 +
1.1304 + function prepareCopy() {
1.1305 + if (d.inaccurateSelection) {
1.1306 + d.prevInput = "";
1.1307 + d.inaccurateSelection = false;
1.1308 + d.input.value = cm.getSelection();
1.1309 + selectInput(d.input);
1.1310 + }
1.1311 + }
1.1312 + on(d.input, "cut", prepareCopy);
1.1313 + on(d.input, "copy", prepareCopy);
1.1314 +
1.1315 + // Needed to handle Tab key in KHTML
1.1316 + if (khtml) on(d.sizer, "mouseup", function() {
1.1317 + if (document.activeElement == d.input) d.input.blur();
1.1318 + focusInput(cm);
1.1319 + });
1.1320 + }
1.1321 +
1.1322 + function mouseEventInWidget(display, e) {
1.1323 + for (var n = e_target(e); n != display.wrapper; n = n.parentNode)
1.1324 + if (/\bCodeMirror-(?:line)?widget\b/.test(n.className) ||
1.1325 + n.parentNode == display.sizer && n != display.mover) return true;
1.1326 + }
1.1327 +
1.1328 + function posFromMouse(cm, e, liberal) {
1.1329 + var display = cm.display;
1.1330 + if (!liberal) {
1.1331 + var target = e_target(e);
1.1332 + if (target == display.scrollbarH || target == display.scrollbarH.firstChild ||
1.1333 + target == display.scrollbarV || target == display.scrollbarV.firstChild ||
1.1334 + target == display.scrollbarFiller) return null;
1.1335 + }
1.1336 + var x, y, space = display.lineSpace.getBoundingClientRect();
1.1337 + // Fails unpredictably on IE[67] when mouse is dragged around quickly.
1.1338 + try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
1.1339 + return coordsChar(cm, x - space.left, y - space.top);
1.1340 + }
1.1341 +
1.1342 + var lastClick, lastDoubleClick;
1.1343 + function onMouseDown(e) {
1.1344 + var cm = this, display = cm.display, view = cm.view, sel = view.sel, doc = view.doc;
1.1345 + sel.shift = e_prop(e, "shiftKey");
1.1346 +
1.1347 + if (mouseEventInWidget(display, e)) {
1.1348 + if (!webkit) {
1.1349 + display.scroller.draggable = false;
1.1350 + setTimeout(function(){display.scroller.draggable = true;}, 100);
1.1351 + }
1.1352 + return;
1.1353 + }
1.1354 + if (clickInGutter(cm, e)) return;
1.1355 + var start = posFromMouse(cm, e);
1.1356 +
1.1357 + switch (e_button(e)) {
1.1358 + case 3:
1.1359 + if (gecko) onContextMenu.call(cm, cm, e);
1.1360 + return;
1.1361 + case 2:
1.1362 + if (start) extendSelection(cm, start);
1.1363 + setTimeout(bind(focusInput, cm), 20);
1.1364 + e_preventDefault(e);
1.1365 + return;
1.1366 + }
1.1367 + // For button 1, if it was clicked inside the editor
1.1368 + // (posFromMouse returning non-null), we have to adjust the
1.1369 + // selection.
1.1370 + if (!start) {if (e_target(e) == display.scroller) e_preventDefault(e); return;}
1.1371 +
1.1372 + if (!view.focused) onFocus(cm);
1.1373 +
1.1374 + var now = +new Date, type = "single";
1.1375 + if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
1.1376 + type = "triple";
1.1377 + e_preventDefault(e);
1.1378 + setTimeout(bind(focusInput, cm), 20);
1.1379 + selectLine(cm, start.line);
1.1380 + } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
1.1381 + type = "double";
1.1382 + lastDoubleClick = {time: now, pos: start};
1.1383 + e_preventDefault(e);
1.1384 + var word = findWordAt(getLine(doc, start.line).text, start);
1.1385 + extendSelection(cm, word.from, word.to);
1.1386 + } else { lastClick = {time: now, pos: start}; }
1.1387 +
1.1388 + var last = start;
1.1389 + if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) && !posEq(sel.from, sel.to) &&
1.1390 + !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
1.1391 + var dragEnd = operation(cm, function(e2) {
1.1392 + if (webkit) display.scroller.draggable = false;
1.1393 + view.draggingText = false;
1.1394 + off(document, "mouseup", dragEnd);
1.1395 + off(display.scroller, "drop", dragEnd);
1.1396 + if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
1.1397 + e_preventDefault(e2);
1.1398 + extendSelection(cm, start);
1.1399 + focusInput(cm);
1.1400 + }
1.1401 + });
1.1402 + // Let the drag handler handle this.
1.1403 + if (webkit) display.scroller.draggable = true;
1.1404 + view.draggingText = dragEnd;
1.1405 + // IE's approach to draggable
1.1406 + if (display.scroller.dragDrop) display.scroller.dragDrop();
1.1407 + on(document, "mouseup", dragEnd);
1.1408 + on(display.scroller, "drop", dragEnd);
1.1409 + return;
1.1410 + }
1.1411 + e_preventDefault(e);
1.1412 + if (type == "single") extendSelection(cm, clipPos(doc, start));
1.1413 +
1.1414 + var startstart = sel.from, startend = sel.to;
1.1415 +
1.1416 + function doSelect(cur) {
1.1417 + if (type == "single") {
1.1418 + extendSelection(cm, clipPos(doc, start), cur);
1.1419 + return;
1.1420 + }
1.1421 +
1.1422 + startstart = clipPos(doc, startstart);
1.1423 + startend = clipPos(doc, startend);
1.1424 + if (type == "double") {
1.1425 + var word = findWordAt(getLine(doc, cur.line).text, cur);
1.1426 + if (posLess(cur, startstart)) extendSelection(cm, word.from, startend);
1.1427 + else extendSelection(cm, startstart, word.to);
1.1428 + } else if (type == "triple") {
1.1429 + if (posLess(cur, startstart)) extendSelection(cm, startend, clipPos(doc, {line: cur.line, ch: 0}));
1.1430 + else extendSelection(cm, startstart, clipPos(doc, {line: cur.line + 1, ch: 0}));
1.1431 + }
1.1432 + }
1.1433 +
1.1434 + var editorSize = display.wrapper.getBoundingClientRect();
1.1435 + // Used to ensure timeout re-tries don't fire when another extend
1.1436 + // happened in the meantime (clearTimeout isn't reliable -- at
1.1437 + // least on Chrome, the timeouts still happen even when cleared,
1.1438 + // if the clear happens after their scheduled firing time).
1.1439 + var counter = 0;
1.1440 +
1.1441 + function extend(e) {
1.1442 + var curCount = ++counter;
1.1443 + var cur = posFromMouse(cm, e, true);
1.1444 + if (!cur) return;
1.1445 + if (!posEq(cur, last)) {
1.1446 + if (!view.focused) onFocus(cm);
1.1447 + last = cur;
1.1448 + doSelect(cur);
1.1449 + var visible = visibleLines(display, doc);
1.1450 + if (cur.line >= visible.to || cur.line < visible.from)
1.1451 + setTimeout(operation(cm, function(){if (counter == curCount) extend(e);}), 150);
1.1452 + } else {
1.1453 + var outside = e.clientY < editorSize.top ? -20 : e.clientY > editorSize.bottom ? 20 : 0;
1.1454 + if (outside) setTimeout(operation(cm, function() {
1.1455 + if (counter != curCount) return;
1.1456 + display.scroller.scrollTop += outside;
1.1457 + extend(e);
1.1458 + }), 50);
1.1459 + }
1.1460 + }
1.1461 +
1.1462 + function done(e) {
1.1463 + counter = Infinity;
1.1464 + var cur = posFromMouse(cm, e);
1.1465 + if (cur) doSelect(cur);
1.1466 + e_preventDefault(e);
1.1467 + focusInput(cm);
1.1468 + off(document, "mousemove", move);
1.1469 + off(document, "mouseup", up);
1.1470 + }
1.1471 +
1.1472 + var move = operation(cm, function(e) {
1.1473 + if (!ie && !e_button(e)) done(e);
1.1474 + else extend(e);
1.1475 + });
1.1476 + var up = operation(cm, done);
1.1477 + on(document, "mousemove", move);
1.1478 + on(document, "mouseup", up);
1.1479 + }
1.1480 +
1.1481 + function onDrop(e) {
1.1482 + var cm = this;
1.1483 + if (cm.options.onDragEvent && cm.options.onDragEvent(cm, addStop(e))) return;
1.1484 + e_preventDefault(e);
1.1485 + var pos = posFromMouse(cm, e, true), files = e.dataTransfer.files;
1.1486 + if (!pos || isReadOnly(cm)) return;
1.1487 + if (files && files.length && window.FileReader && window.File) {
1.1488 + var n = files.length, text = Array(n), read = 0;
1.1489 + var loadFile = function(file, i) {
1.1490 + var reader = new FileReader;
1.1491 + reader.onload = function() {
1.1492 + text[i] = reader.result;
1.1493 + if (++read == n) {
1.1494 + pos = clipPos(cm.view.doc, pos);
1.1495 + operation(cm, function() {
1.1496 + var end = replaceRange(cm, text.join(""), pos, pos, "paste");
1.1497 + setSelection(cm, pos, end);
1.1498 + })();
1.1499 + }
1.1500 + };
1.1501 + reader.readAsText(file);
1.1502 + };
1.1503 + for (var i = 0; i < n; ++i) loadFile(files[i], i);
1.1504 + } else {
1.1505 + // Don't do a replace if the drop happened inside of the selected text.
1.1506 + if (cm.view.draggingText && !(posLess(pos, cm.view.sel.from) || posLess(cm.view.sel.to, pos))) {
1.1507 + cm.view.draggingText(e);
1.1508 + if (ie) setTimeout(bind(focusInput, cm), 50);
1.1509 + return;
1.1510 + }
1.1511 + try {
1.1512 + var text = e.dataTransfer.getData("Text");
1.1513 + if (text) {
1.1514 + var curFrom = cm.view.sel.from, curTo = cm.view.sel.to;
1.1515 + setSelection(cm, pos, pos);
1.1516 + if (cm.view.draggingText) replaceRange(cm, "", curFrom, curTo, "paste");
1.1517 + cm.replaceSelection(text, null, "paste");
1.1518 + focusInput(cm);
1.1519 + onFocus(cm);
1.1520 + }
1.1521 + }
1.1522 + catch(e){}
1.1523 + }
1.1524 + }
1.1525 +
1.1526 + function clickInGutter(cm, e) {
1.1527 + var display = cm.display;
1.1528 + try { var mX = e.clientX, mY = e.clientY; }
1.1529 + catch(e) { return false; }
1.1530 +
1.1531 + if (mX >= Math.floor(display.gutters.getBoundingClientRect().right)) return false;
1.1532 + e_preventDefault(e);
1.1533 + if (!hasHandler(cm, "gutterClick")) return true;
1.1534 +
1.1535 + var lineBox = display.lineDiv.getBoundingClientRect();
1.1536 + if (mY > lineBox.bottom) return true;
1.1537 + mY -= lineBox.top - display.viewOffset;
1.1538 +
1.1539 + for (var i = 0; i < cm.options.gutters.length; ++i) {
1.1540 + var g = display.gutters.childNodes[i];
1.1541 + if (g && g.getBoundingClientRect().right >= mX) {
1.1542 + var line = lineAtHeight(cm.view.doc, mY);
1.1543 + var gutter = cm.options.gutters[i];
1.1544 + signalLater(cm, cm, "gutterClick", cm, line, gutter, e);
1.1545 + break;
1.1546 + }
1.1547 + }
1.1548 + return true;
1.1549 + }
1.1550 +
1.1551 + function onDragStart(cm, e) {
1.1552 + var txt = cm.getSelection();
1.1553 + e.dataTransfer.setData("Text", txt);
1.1554 +
1.1555 + // Use dummy image instead of default browsers image.
1.1556 + // Recent Safari (~6.0.2) have a tendency to segfault when this happens, so we don't do it there.
1.1557 + if (e.dataTransfer.setDragImage && !safari)
1.1558 + e.dataTransfer.setDragImage(elt('img'), 0, 0);
1.1559 + }
1.1560 +
1.1561 + function setScrollTop(cm, val) {
1.1562 + if (Math.abs(cm.view.scrollTop - val) < 2) return;
1.1563 + cm.view.scrollTop = val;
1.1564 + if (!gecko) updateDisplay(cm, [], val);
1.1565 + if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;
1.1566 + if (cm.display.scrollbarV.scrollTop != val) cm.display.scrollbarV.scrollTop = val;
1.1567 + if (gecko) updateDisplay(cm, []);
1.1568 + }
1.1569 + function setScrollLeft(cm, val, isScroller) {
1.1570 + if (isScroller ? val == cm.view.scrollLeft : Math.abs(cm.view.scrollLeft - val) < 2) return;
1.1571 + cm.view.scrollLeft = val;
1.1572 + alignHorizontally(cm);
1.1573 + if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;
1.1574 + if (cm.display.scrollbarH.scrollLeft != val) cm.display.scrollbarH.scrollLeft = val;
1.1575 + }
1.1576 +
1.1577 + // Since the delta values reported on mouse wheel events are
1.1578 + // unstandardized between browsers and even browser versions, and
1.1579 + // generally horribly unpredictable, this code starts by measuring
1.1580 + // the scroll effect that the first few mouse wheel events have,
1.1581 + // and, from that, detects the way it can convert deltas to pixel
1.1582 + // offsets afterwards.
1.1583 + //
1.1584 + // The reason we want to know the amount a wheel event will scroll
1.1585 + // is that it gives us a chance to update the display before the
1.1586 + // actual scrolling happens, reducing flickering.
1.1587 +
1.1588 + var wheelSamples = 0, wheelDX, wheelDY, wheelStartX, wheelStartY, wheelPixelsPerUnit = null;
1.1589 + // Fill in a browser-detected starting value on browsers where we
1.1590 + // know one. These don't have to be accurate -- the result of them
1.1591 + // being wrong would just be a slight flicker on the first wheel
1.1592 + // scroll (if it is large enough).
1.1593 + if (ie) wheelPixelsPerUnit = -.53;
1.1594 + else if (gecko) wheelPixelsPerUnit = 15;
1.1595 + else if (chrome) wheelPixelsPerUnit = -.7;
1.1596 + else if (safari) wheelPixelsPerUnit = -1/3;
1.1597 +
1.1598 + function onScrollWheel(cm, e) {
1.1599 + var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
1.1600 + if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
1.1601 + if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
1.1602 + else if (dy == null) dy = e.wheelDelta;
1.1603 +
1.1604 + // Webkit browsers on OS X abort momentum scrolls when the target
1.1605 + // of the scroll event is removed from the scrollable element.
1.1606 + // This hack (see related code in patchDisplay) makes sure the
1.1607 + // element is kept around.
1.1608 + if (dy && mac && webkit) {
1.1609 + for (var cur = e.target; cur != scroll; cur = cur.parentNode) {
1.1610 + if (cur.lineObj) {
1.1611 + cm.display.currentWheelTarget = cur;
1.1612 + break;
1.1613 + }
1.1614 + }
1.1615 + }
1.1616 +
1.1617 + var scroll = cm.display.scroller;
1.1618 + // On some browsers, horizontal scrolling will cause redraws to
1.1619 + // happen before the gutter has been realigned, causing it to
1.1620 + // wriggle around in a most unseemly way. When we have an
1.1621 + // estimated pixels/delta value, we just handle horizontal
1.1622 + // scrolling entirely here. It'll be slightly off from native, but
1.1623 + // better than glitching out.
1.1624 + if (dx && !gecko && !opera && wheelPixelsPerUnit != null) {
1.1625 + if (dy)
1.1626 + setScrollTop(cm, Math.max(0, Math.min(scroll.scrollTop + dy * wheelPixelsPerUnit, scroll.scrollHeight - scroll.clientHeight)));
1.1627 + setScrollLeft(cm, Math.max(0, Math.min(scroll.scrollLeft + dx * wheelPixelsPerUnit, scroll.scrollWidth - scroll.clientWidth)));
1.1628 + e_preventDefault(e);
1.1629 + wheelStartX = null; // Abort measurement, if in progress
1.1630 + return;
1.1631 + }
1.1632 +
1.1633 + if (dy && wheelPixelsPerUnit != null) {
1.1634 + var pixels = dy * wheelPixelsPerUnit;
1.1635 + var top = cm.view.scrollTop, bot = top + cm.display.wrapper.clientHeight;
1.1636 + if (pixels < 0) top = Math.max(0, top + pixels - 50);
1.1637 + else bot = Math.min(cm.view.doc.height, bot + pixels + 50);
1.1638 + updateDisplay(cm, [], {top: top, bottom: bot});
1.1639 + }
1.1640 +
1.1641 + if (wheelSamples < 20) {
1.1642 + if (wheelStartX == null) {
1.1643 + wheelStartX = scroll.scrollLeft; wheelStartY = scroll.scrollTop;
1.1644 + wheelDX = dx; wheelDY = dy;
1.1645 + setTimeout(function() {
1.1646 + if (wheelStartX == null) return;
1.1647 + var movedX = scroll.scrollLeft - wheelStartX;
1.1648 + var movedY = scroll.scrollTop - wheelStartY;
1.1649 + var sample = (movedY && wheelDY && movedY / wheelDY) ||
1.1650 + (movedX && wheelDX && movedX / wheelDX);
1.1651 + wheelStartX = wheelStartY = null;
1.1652 + if (!sample) return;
1.1653 + wheelPixelsPerUnit = (wheelPixelsPerUnit * wheelSamples + sample) / (wheelSamples + 1);
1.1654 + ++wheelSamples;
1.1655 + }, 200);
1.1656 + } else {
1.1657 + wheelDX += dx; wheelDY += dy;
1.1658 + }
1.1659 + }
1.1660 + }
1.1661 +
1.1662 + function doHandleBinding(cm, bound, dropShift) {
1.1663 + if (typeof bound == "string") {
1.1664 + bound = commands[bound];
1.1665 + if (!bound) return false;
1.1666 + }
1.1667 + // Ensure previous input has been read, so that the handler sees a
1.1668 + // consistent view of the document
1.1669 + if (cm.display.pollingFast && readInput(cm)) cm.display.pollingFast = false;
1.1670 + var view = cm.view, prevShift = view.sel.shift;
1.1671 + try {
1.1672 + if (isReadOnly(cm)) view.suppressEdits = true;
1.1673 + if (dropShift) view.sel.shift = false;
1.1674 + bound(cm);
1.1675 + } catch(e) {
1.1676 + if (e != Pass) throw e;
1.1677 + return false;
1.1678 + } finally {
1.1679 + view.sel.shift = prevShift;
1.1680 + view.suppressEdits = false;
1.1681 + }
1.1682 + return true;
1.1683 + }
1.1684 +
1.1685 + function allKeyMaps(cm) {
1.1686 + var maps = cm.view.keyMaps.slice(0);
1.1687 + maps.push(cm.options.keyMap);
1.1688 + if (cm.options.extraKeys) maps.unshift(cm.options.extraKeys);
1.1689 + return maps;
1.1690 + }
1.1691 +
1.1692 + var maybeTransition;
1.1693 + function handleKeyBinding(cm, e) {
1.1694 + // Handle auto keymap transitions
1.1695 + var startMap = getKeyMap(cm.options.keyMap), next = startMap.auto;
1.1696 + clearTimeout(maybeTransition);
1.1697 + if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
1.1698 + if (getKeyMap(cm.options.keyMap) == startMap)
1.1699 + cm.options.keyMap = (next.call ? next.call(null, cm) : next);
1.1700 + }, 50);
1.1701 +
1.1702 + var name = keyNames[e_prop(e, "keyCode")], handled = false;
1.1703 + var flipCtrlCmd = mac && (opera || qtwebkit);
1.1704 + if (name == null || e.altGraphKey) return false;
1.1705 + if (e_prop(e, "altKey")) name = "Alt-" + name;
1.1706 + if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name;
1.1707 + if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "metaKey")) name = "Cmd-" + name;
1.1708 +
1.1709 + var stopped = false;
1.1710 + function stop() { stopped = true; }
1.1711 + var keymaps = allKeyMaps(cm);
1.1712 +
1.1713 + if (e_prop(e, "shiftKey")) {
1.1714 + handled = lookupKey("Shift-" + name, keymaps,
1.1715 + function(b) {return doHandleBinding(cm, b, true);}, stop)
1.1716 + || lookupKey(name, keymaps, function(b) {
1.1717 + if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(cm, b);
1.1718 + }, stop);
1.1719 + } else {
1.1720 + handled = lookupKey(name, keymaps,
1.1721 + function(b) { return doHandleBinding(cm, b); }, stop);
1.1722 + }
1.1723 + if (stopped) handled = false;
1.1724 + if (handled) {
1.1725 + e_preventDefault(e);
1.1726 + restartBlink(cm);
1.1727 + if (ie_lt9) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
1.1728 + }
1.1729 + return handled;
1.1730 + }
1.1731 +
1.1732 + function handleCharBinding(cm, e, ch) {
1.1733 + var handled = lookupKey("'" + ch + "'", allKeyMaps(cm),
1.1734 + function(b) { return doHandleBinding(cm, b, true); });
1.1735 + if (handled) {
1.1736 + e_preventDefault(e);
1.1737 + restartBlink(cm);
1.1738 + }
1.1739 + return handled;
1.1740 + }
1.1741 +
1.1742 + var lastStoppedKey = null;
1.1743 + function onKeyDown(e) {
1.1744 + var cm = this;
1.1745 + if (!cm.view.focused) onFocus(cm);
1.1746 + if (ie && e.keyCode == 27) { e.returnValue = false; }
1.1747 + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
1.1748 + var code = e_prop(e, "keyCode");
1.1749 + // IE does strange things with escape.
1.1750 + cm.view.sel.shift = code == 16 || e_prop(e, "shiftKey");
1.1751 + // First give onKeyEvent option a chance to handle this.
1.1752 + var handled = handleKeyBinding(cm, e);
1.1753 + if (opera) {
1.1754 + lastStoppedKey = handled ? code : null;
1.1755 + // Opera has no cut event... we try to at least catch the key combo
1.1756 + if (!handled && code == 88 && !hasCopyEvent && e_prop(e, mac ? "metaKey" : "ctrlKey"))
1.1757 + cm.replaceSelection("");
1.1758 + }
1.1759 + }
1.1760 +
1.1761 + function onKeyPress(e) {
1.1762 + var cm = this;
1.1763 + if (cm.options.onKeyEvent && cm.options.onKeyEvent(cm, addStop(e))) return;
1.1764 + var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
1.1765 + if (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
1.1766 + if (((opera && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;
1.1767 + var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
1.1768 + if (this.options.electricChars && this.view.mode.electricChars &&
1.1769 + this.options.smartIndent && !isReadOnly(this) &&
1.1770 + this.view.mode.electricChars.indexOf(ch) > -1)
1.1771 + setTimeout(operation(cm, function() {indentLine(cm, cm.view.sel.to.line, "smart");}), 75);
1.1772 + if (handleCharBinding(cm, e, ch)) return;
1.1773 + fastPoll(cm);
1.1774 + }
1.1775 +
1.1776 + function onFocus(cm) {
1.1777 + if (cm.options.readOnly == "nocursor") return;
1.1778 + if (!cm.view.focused) {
1.1779 + signal(cm, "focus", cm);
1.1780 + cm.view.focused = true;
1.1781 + if (cm.display.scroller.className.search(/\bCodeMirror-focused\b/) == -1)
1.1782 + cm.display.scroller.className += " CodeMirror-focused";
1.1783 + resetInput(cm, true);
1.1784 + }
1.1785 + slowPoll(cm);
1.1786 + restartBlink(cm);
1.1787 + }
1.1788 + function onBlur(cm) {
1.1789 + if (cm.view.focused) {
1.1790 + signal(cm, "blur", cm);
1.1791 + cm.view.focused = false;
1.1792 + cm.display.scroller.className = cm.display.scroller.className.replace(" CodeMirror-focused", "");
1.1793 + }
1.1794 + clearInterval(cm.display.blinker);
1.1795 + setTimeout(function() {if (!cm.view.focused) cm.view.sel.shift = false;}, 150);
1.1796 + }
1.1797 +
1.1798 + var detectingSelectAll;
1.1799 + function onContextMenu(cm, e) {
1.1800 + var display = cm.display, sel = cm.view.sel;
1.1801 + var pos = posFromMouse(cm, e), scrollPos = display.scroller.scrollTop;
1.1802 + if (!pos || opera) return; // Opera is difficult.
1.1803 + if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
1.1804 + operation(cm, setSelection)(cm, pos, pos);
1.1805 +
1.1806 + var oldCSS = display.input.style.cssText;
1.1807 + display.inputDiv.style.position = "absolute";
1.1808 + display.input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
1.1809 + "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; outline: none;" +
1.1810 + "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
1.1811 + focusInput(cm);
1.1812 + resetInput(cm, true);
1.1813 + // Adds "Select all" to context menu in FF
1.1814 + if (posEq(sel.from, sel.to)) display.input.value = display.prevInput = " ";
1.1815 +
1.1816 + function rehide() {
1.1817 + display.inputDiv.style.position = "relative";
1.1818 + display.input.style.cssText = oldCSS;
1.1819 + if (ie_lt9) display.scrollbarV.scrollTop = display.scroller.scrollTop = scrollPos;
1.1820 + slowPoll(cm);
1.1821 +
1.1822 + // Try to detect the user choosing select-all
1.1823 + if (display.input.selectionStart != null) {
1.1824 + clearTimeout(detectingSelectAll);
1.1825 + var extval = display.input.value = " " + (posEq(sel.from, sel.to) ? "" : display.input.value), i = 0;
1.1826 + display.prevInput = " ";
1.1827 + display.input.selectionStart = 1; display.input.selectionEnd = extval.length;
1.1828 + detectingSelectAll = setTimeout(function poll(){
1.1829 + if (display.prevInput == " " && display.input.selectionStart == 0)
1.1830 + operation(cm, commands.selectAll)(cm);
1.1831 + else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
1.1832 + else resetInput(cm);
1.1833 + }, 200);
1.1834 + }
1.1835 + }
1.1836 +
1.1837 + if (gecko) {
1.1838 + e_stop(e);
1.1839 + on(window, "mouseup", function mouseup() {
1.1840 + off(window, "mouseup", mouseup);
1.1841 + setTimeout(rehide, 20);
1.1842 + });
1.1843 + } else {
1.1844 + setTimeout(rehide, 50);
1.1845 + }
1.1846 + }
1.1847 +
1.1848 + // UPDATING
1.1849 +
1.1850 + // Replace the range from from to to by the strings in newText.
1.1851 + // Afterwards, set the selection to selFrom, selTo.
1.1852 + function updateDoc(cm, from, to, newText, selUpdate, origin) {
1.1853 + // Possibly split or suppress the update based on the presence
1.1854 + // of read-only spans in its range.
1.1855 + var split = sawReadOnlySpans &&
1.1856 + removeReadOnlyRanges(cm.view.doc, from, to);
1.1857 + if (split) {
1.1858 + for (var i = split.length - 1; i >= 1; --i)
1.1859 + updateDocInner(cm, split[i].from, split[i].to, [""], origin);
1.1860 + if (split.length)
1.1861 + return updateDocInner(cm, split[0].from, split[0].to, newText, selUpdate, origin);
1.1862 + } else {
1.1863 + return updateDocInner(cm, from, to, newText, selUpdate, origin);
1.1864 + }
1.1865 + }
1.1866 +
1.1867 + function updateDocInner(cm, from, to, newText, selUpdate, origin) {
1.1868 + if (cm.view.suppressEdits) return;
1.1869 +
1.1870 + var view = cm.view, doc = view.doc, old = [];
1.1871 + doc.iter(from.line, to.line + 1, function(line) {
1.1872 + old.push(newHL(line.text, line.markedSpans));
1.1873 + });
1.1874 + var startSelFrom = view.sel.from, startSelTo = view.sel.to;
1.1875 + var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);
1.1876 + var retval = updateDocNoUndo(cm, from, to, lines, selUpdate, origin);
1.1877 + if (view.history) addChange(cm, from.line, newText.length, old, origin,
1.1878 + startSelFrom, startSelTo, view.sel.from, view.sel.to);
1.1879 + return retval;
1.1880 + }
1.1881 +
1.1882 + function unredoHelper(cm, type) {
1.1883 + var doc = cm.view.doc, hist = cm.view.history;
1.1884 + var set = (type == "undo" ? hist.done : hist.undone).pop();
1.1885 + if (!set) return;
1.1886 + var anti = {events: [], fromBefore: set.fromAfter, toBefore: set.toAfter,
1.1887 + fromAfter: set.fromBefore, toAfter: set.toBefore};
1.1888 + for (var i = set.events.length - 1; i >= 0; i -= 1) {
1.1889 + hist.dirtyCounter += type == "undo" ? -1 : 1;
1.1890 + var change = set.events[i];
1.1891 + var replaced = [], end = change.start + change.added;
1.1892 + doc.iter(change.start, end, function(line) { replaced.push(newHL(line.text, line.markedSpans)); });
1.1893 + anti.events.push({start: change.start, added: change.old.length, old: replaced});
1.1894 + var selPos = i ? null : {from: set.fromBefore, to: set.toBefore};
1.1895 + updateDocNoUndo(cm, {line: change.start, ch: 0}, {line: end - 1, ch: getLine(doc, end-1).text.length},
1.1896 + change.old, selPos, type);
1.1897 + }
1.1898 + (type == "undo" ? hist.undone : hist.done).push(anti);
1.1899 + }
1.1900 +
1.1901 + function updateDocNoUndo(cm, from, to, lines, selUpdate, origin) {
1.1902 + var view = cm.view, doc = view.doc, display = cm.display;
1.1903 + if (view.suppressEdits) return;
1.1904 +
1.1905 + var nlines = to.line - from.line, firstLine = getLine(doc, from.line), lastLine = getLine(doc, to.line);
1.1906 + var recomputeMaxLength = false, checkWidthStart = from.line;
1.1907 + if (!cm.options.lineWrapping) {
1.1908 + checkWidthStart = lineNo(visualLine(doc, firstLine));
1.1909 + doc.iter(checkWidthStart, to.line + 1, function(line) {
1.1910 + if (lineLength(doc, line) == view.maxLineLength) {
1.1911 + recomputeMaxLength = true;
1.1912 + return true;
1.1913 + }
1.1914 + });
1.1915 + }
1.1916 +
1.1917 + var lastHL = lst(lines), th = textHeight(display);
1.1918 +
1.1919 + // First adjust the line structure
1.1920 + if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") {
1.1921 + // This is a whole-line replace. Treated specially to make
1.1922 + // sure line objects move the way they are supposed to.
1.1923 + var added = [];
1.1924 + for (var i = 0, e = lines.length - 1; i < e; ++i)
1.1925 + added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th));
1.1926 + updateLine(cm, lastLine, lastLine.text, hlSpans(lastHL));
1.1927 + if (nlines) doc.remove(from.line, nlines, cm);
1.1928 + if (added.length) doc.insert(from.line, added);
1.1929 + } else if (firstLine == lastLine) {
1.1930 + if (lines.length == 1) {
1.1931 + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) +
1.1932 + firstLine.text.slice(to.ch), hlSpans(lines[0]));
1.1933 + } else {
1.1934 + for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)
1.1935 + added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th));
1.1936 + added.push(makeLine(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL), th));
1.1937 + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
1.1938 + doc.insert(from.line + 1, added);
1.1939 + }
1.1940 + } else if (lines.length == 1) {
1.1941 + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]) +
1.1942 + lastLine.text.slice(to.ch), hlSpans(lines[0]));
1.1943 + doc.remove(from.line + 1, nlines, cm);
1.1944 + } else {
1.1945 + var added = [];
1.1946 + updateLine(cm, firstLine, firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
1.1947 + updateLine(cm, lastLine, hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL));
1.1948 + for (var i = 1, e = lines.length - 1; i < e; ++i)
1.1949 + added.push(makeLine(hlText(lines[i]), hlSpans(lines[i]), th));
1.1950 + if (nlines > 1) doc.remove(from.line + 1, nlines - 1, cm);
1.1951 + doc.insert(from.line + 1, added);
1.1952 + }
1.1953 +
1.1954 + if (cm.options.lineWrapping) {
1.1955 + var perLine = Math.max(5, display.scroller.clientWidth / charWidth(display) - 3);
1.1956 + doc.iter(from.line, from.line + lines.length, function(line) {
1.1957 + if (line.height == 0) return;
1.1958 + var guess = (Math.ceil(line.text.length / perLine) || 1) * th;
1.1959 + if (guess != line.height) updateLineHeight(line, guess);
1.1960 + });
1.1961 + } else {
1.1962 + doc.iter(checkWidthStart, from.line + lines.length, function(line) {
1.1963 + var len = lineLength(doc, line);
1.1964 + if (len > view.maxLineLength) {
1.1965 + view.maxLine = line;
1.1966 + view.maxLineLength = len;
1.1967 + view.maxLineChanged = true;
1.1968 + recomputeMaxLength = false;
1.1969 + }
1.1970 + });
1.1971 + if (recomputeMaxLength) cm.curOp.updateMaxLine = true;
1.1972 + }
1.1973 +
1.1974 + // Adjust frontier, schedule worker
1.1975 + view.frontier = Math.min(view.frontier, from.line);
1.1976 + startWorker(cm, 400);
1.1977 +
1.1978 + var lendiff = lines.length - nlines - 1;
1.1979 + // Remember that these lines changed, for updating the display
1.1980 + regChange(cm, from.line, to.line + 1, lendiff);
1.1981 + if (hasHandler(cm, "change")) {
1.1982 + // Normalize lines to contain only strings, since that's what
1.1983 + // the change event handler expects
1.1984 + for (var i = 0; i < lines.length; ++i)
1.1985 + if (typeof lines[i] != "string") lines[i] = lines[i].text;
1.1986 + var changeObj = {from: from, to: to, text: lines, origin: origin};
1.1987 + if (cm.curOp.textChanged) {
1.1988 + for (var cur = cm.curOp.textChanged; cur.next; cur = cur.next) {}
1.1989 + cur.next = changeObj;
1.1990 + } else cm.curOp.textChanged = changeObj;
1.1991 + }
1.1992 +
1.1993 + // Update the selection
1.1994 + var newSelFrom, newSelTo, end = {line: from.line + lines.length - 1,
1.1995 + ch: hlText(lastHL).length + (lines.length == 1 ? from.ch : 0)};
1.1996 + if (selUpdate && typeof selUpdate != "string") {
1.1997 + if (selUpdate.from) { newSelFrom = selUpdate.from; newSelTo = selUpdate.to; }
1.1998 + else newSelFrom = newSelTo = selUpdate;
1.1999 + } else if (selUpdate == "end") {
1.2000 + newSelFrom = newSelTo = end;
1.2001 + } else if (selUpdate == "start") {
1.2002 + newSelFrom = newSelTo = from;
1.2003 + } else if (selUpdate == "around") {
1.2004 + newSelFrom = from; newSelTo = end;
1.2005 + } else {
1.2006 + var adjustPos = function(pos) {
1.2007 + if (posLess(pos, from)) return pos;
1.2008 + if (!posLess(to, pos)) return end;
1.2009 + var line = pos.line + lendiff;
1.2010 + var ch = pos.ch;
1.2011 + if (pos.line == to.line)
1.2012 + ch += hlText(lastHL).length - (to.ch - (to.line == from.line ? from.ch : 0));
1.2013 + return {line: line, ch: ch};
1.2014 + };
1.2015 + newSelFrom = adjustPos(view.sel.from);
1.2016 + newSelTo = adjustPos(view.sel.to);
1.2017 + }
1.2018 + setSelection(cm, newSelFrom, newSelTo, null, true);
1.2019 + return end;
1.2020 + }
1.2021 +
1.2022 + function replaceRange(cm, code, from, to, origin) {
1.2023 + if (!to) to = from;
1.2024 + if (posLess(to, from)) { var tmp = to; to = from; from = tmp; }
1.2025 + return updateDoc(cm, from, to, splitLines(code), null, origin);
1.2026 + }
1.2027 +
1.2028 + // SELECTION
1.2029 +
1.2030 + function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
1.2031 + function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
1.2032 + function copyPos(x) {return {line: x.line, ch: x.ch};}
1.2033 +
1.2034 + function clipLine(doc, n) {return Math.max(0, Math.min(n, doc.size-1));}
1.2035 + function clipPos(doc, pos) {
1.2036 + if (pos.line < 0) return {line: 0, ch: 0};
1.2037 + if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc, doc.size-1).text.length};
1.2038 + var ch = pos.ch, linelen = getLine(doc, pos.line).text.length;
1.2039 + if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
1.2040 + else if (ch < 0) return {line: pos.line, ch: 0};
1.2041 + else return pos;
1.2042 + }
1.2043 + function isLine(doc, l) {return l >= 0 && l < doc.size;}
1.2044 +
1.2045 + // If shift is held, this will move the selection anchor. Otherwise,
1.2046 + // it'll set the whole selection.
1.2047 + function extendSelection(cm, pos, other, bias) {
1.2048 + var sel = cm.view.sel;
1.2049 + if (sel.shift || sel.extend) {
1.2050 + var anchor = sel.anchor;
1.2051 + if (other) {
1.2052 + var posBefore = posLess(pos, anchor);
1.2053 + if (posBefore != posLess(other, anchor)) {
1.2054 + anchor = pos;
1.2055 + pos = other;
1.2056 + } else if (posBefore != posLess(pos, other)) {
1.2057 + pos = other;
1.2058 + }
1.2059 + }
1.2060 + setSelection(cm, anchor, pos, bias);
1.2061 + } else {
1.2062 + setSelection(cm, pos, other || pos, bias);
1.2063 + }
1.2064 + cm.curOp.userSelChange = true;
1.2065 + }
1.2066 +
1.2067 + // Update the selection. Last two args are only used by
1.2068 + // updateDoc, since they have to be expressed in the line
1.2069 + // numbers before the update.
1.2070 + function setSelection(cm, anchor, head, bias, checkAtomic) {
1.2071 + cm.view.goalColumn = null;
1.2072 + var sel = cm.view.sel;
1.2073 + // Skip over atomic spans.
1.2074 + if (checkAtomic || !posEq(anchor, sel.anchor))
1.2075 + anchor = skipAtomic(cm, anchor, bias, checkAtomic != "push");
1.2076 + if (checkAtomic || !posEq(head, sel.head))
1.2077 + head = skipAtomic(cm, head, bias, checkAtomic != "push");
1.2078 +
1.2079 + if (posEq(sel.anchor, anchor) && posEq(sel.head, head)) return;
1.2080 +
1.2081 + sel.anchor = anchor; sel.head = head;
1.2082 + var inv = posLess(head, anchor);
1.2083 + sel.from = inv ? head : anchor;
1.2084 + sel.to = inv ? anchor : head;
1.2085 +
1.2086 + cm.curOp.updateInput = true;
1.2087 + cm.curOp.selectionChanged = true;
1.2088 + }
1.2089 +
1.2090 + function reCheckSelection(cm) {
1.2091 + setSelection(cm, cm.view.sel.from, cm.view.sel.to, null, "push");
1.2092 + }
1.2093 +
1.2094 + function skipAtomic(cm, pos, bias, mayClear) {
1.2095 + var doc = cm.view.doc, flipped = false, curPos = pos;
1.2096 + var dir = bias || 1;
1.2097 + cm.view.cantEdit = false;
1.2098 + search: for (;;) {
1.2099 + var line = getLine(doc, curPos.line), toClear;
1.2100 + if (line.markedSpans) {
1.2101 + for (var i = 0; i < line.markedSpans.length; ++i) {
1.2102 + var sp = line.markedSpans[i], m = sp.marker;
1.2103 + if ((sp.from == null || (m.inclusiveLeft ? sp.from <= curPos.ch : sp.from < curPos.ch)) &&
1.2104 + (sp.to == null || (m.inclusiveRight ? sp.to >= curPos.ch : sp.to > curPos.ch))) {
1.2105 + if (mayClear && m.clearOnEnter) {
1.2106 + (toClear || (toClear = [])).push(m);
1.2107 + continue;
1.2108 + } else if (!m.atomic) continue;
1.2109 + var newPos = m.find()[dir < 0 ? "from" : "to"];
1.2110 + if (posEq(newPos, curPos)) {
1.2111 + newPos.ch += dir;
1.2112 + if (newPos.ch < 0) {
1.2113 + if (newPos.line) newPos = clipPos(doc, {line: newPos.line - 1});
1.2114 + else newPos = null;
1.2115 + } else if (newPos.ch > line.text.length) {
1.2116 + if (newPos.line < doc.size - 1) newPos = {line: newPos.line + 1, ch: 0};
1.2117 + else newPos = null;
1.2118 + }
1.2119 + if (!newPos) {
1.2120 + if (flipped) {
1.2121 + // Driven in a corner -- no valid cursor position found at all
1.2122 + // -- try again *with* clearing, if we didn't already
1.2123 + if (!mayClear) return skipAtomic(cm, pos, bias, true);
1.2124 + // Otherwise, turn off editing until further notice, and return the start of the doc
1.2125 + cm.view.cantEdit = true;
1.2126 + return {line: 0, ch: 0};
1.2127 + }
1.2128 + flipped = true; newPos = pos; dir = -dir;
1.2129 + }
1.2130 + }
1.2131 + curPos = newPos;
1.2132 + continue search;
1.2133 + }
1.2134 + }
1.2135 + if (toClear) for (var i = 0; i < toClear.length; ++i) toClear[i].clear();
1.2136 + }
1.2137 + return curPos;
1.2138 + }
1.2139 + }
1.2140 +
1.2141 + // SCROLLING
1.2142 +
1.2143 + function scrollCursorIntoView(cm) {
1.2144 + var view = cm.view;
1.2145 + var coords = scrollPosIntoView(cm, view.sel.head);
1.2146 + if (!view.focused) return;
1.2147 + var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
1.2148 + if (coords.top + box.top < 0) doScroll = true;
1.2149 + else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
1.2150 + if (doScroll != null && !phantom) {
1.2151 + var hidden = display.cursor.style.display == "none";
1.2152 + if (hidden) {
1.2153 + display.cursor.style.display = "";
1.2154 + display.cursor.style.left = coords.left + "px";
1.2155 + display.cursor.style.top = (coords.top - display.viewOffset) + "px";
1.2156 + }
1.2157 + display.cursor.scrollIntoView(doScroll);
1.2158 + if (hidden) display.cursor.style.display = "none";
1.2159 + }
1.2160 + }
1.2161 +
1.2162 + function scrollPosIntoView(cm, pos) {
1.2163 + for (;;) {
1.2164 + var changed = false, coords = cursorCoords(cm, pos);
1.2165 + var scrollPos = calculateScrollPos(cm, coords.left, coords.top, coords.left, coords.bottom);
1.2166 + var startTop = cm.view.scrollTop, startLeft = cm.view.scrollLeft;
1.2167 + if (scrollPos.scrollTop != null) {
1.2168 + setScrollTop(cm, scrollPos.scrollTop);
1.2169 + if (Math.abs(cm.view.scrollTop - startTop) > 1) changed = true;
1.2170 + }
1.2171 + if (scrollPos.scrollLeft != null) {
1.2172 + setScrollLeft(cm, scrollPos.scrollLeft);
1.2173 + if (Math.abs(cm.view.scrollLeft - startLeft) > 1) changed = true;
1.2174 + }
1.2175 + if (!changed) return coords;
1.2176 + }
1.2177 + }
1.2178 +
1.2179 + function scrollIntoView(cm, x1, y1, x2, y2) {
1.2180 + var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
1.2181 + if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
1.2182 + if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);
1.2183 + }
1.2184 +
1.2185 + function calculateScrollPos(cm, x1, y1, x2, y2) {
1.2186 + var display = cm.display, pt = paddingTop(display);
1.2187 + y1 += pt; y2 += pt;
1.2188 + var screen = display.scroller.clientHeight - scrollerCutOff, screentop = display.scroller.scrollTop, result = {};
1.2189 + var docBottom = cm.view.doc.height + 2 * pt;
1.2190 + var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
1.2191 + if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);
1.2192 + else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen;
1.2193 +
1.2194 + var screenw = display.scroller.clientWidth - scrollerCutOff, screenleft = display.scroller.scrollLeft;
1.2195 + x1 += display.gutters.offsetWidth; x2 += display.gutters.offsetWidth;
1.2196 + var gutterw = display.gutters.offsetWidth;
1.2197 + var atLeft = x1 < gutterw + 10;
1.2198 + if (x1 < screenleft + gutterw || atLeft) {
1.2199 + if (atLeft) x1 = 0;
1.2200 + result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
1.2201 + } else if (x2 > screenw + screenleft - 3) {
1.2202 + result.scrollLeft = x2 + 10 - screenw;
1.2203 + }
1.2204 + return result;
1.2205 + }
1.2206 +
1.2207 + // API UTILITIES
1.2208 +
1.2209 + function indentLine(cm, n, how, aggressive) {
1.2210 + var doc = cm.view.doc;
1.2211 + if (!how) how = "add";
1.2212 + if (how == "smart") {
1.2213 + if (!cm.view.mode.indent) how = "prev";
1.2214 + else var state = getStateBefore(cm, n);
1.2215 + }
1.2216 +
1.2217 + var tabSize = cm.options.tabSize;
1.2218 + var line = getLine(doc, n), curSpace = countColumn(line.text, null, tabSize);
1.2219 + var curSpaceString = line.text.match(/^\s*/)[0], indentation;
1.2220 + if (how == "smart") {
1.2221 + indentation = cm.view.mode.indent(state, line.text.slice(curSpaceString.length), line.text);
1.2222 + if (indentation == Pass) {
1.2223 + if (!aggressive) return;
1.2224 + how = "prev";
1.2225 + }
1.2226 + }
1.2227 + if (how == "prev") {
1.2228 + if (n) indentation = countColumn(getLine(doc, n-1).text, null, tabSize);
1.2229 + else indentation = 0;
1.2230 + }
1.2231 + else if (how == "add") indentation = curSpace + cm.options.indentUnit;
1.2232 + else if (how == "subtract") indentation = curSpace - cm.options.indentUnit;
1.2233 + indentation = Math.max(0, indentation);
1.2234 +
1.2235 + var indentString = "", pos = 0;
1.2236 + if (cm.options.indentWithTabs)
1.2237 + for (var i = Math.floor(indentation / tabSize); i; --i) {pos += tabSize; indentString += "\t";}
1.2238 + if (pos < indentation) indentString += spaceStr(indentation - pos);
1.2239 +
1.2240 + if (indentString != curSpaceString)
1.2241 + replaceRange(cm, indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length}, "input");
1.2242 + line.stateAfter = null;
1.2243 + }
1.2244 +
1.2245 + function changeLine(cm, handle, op) {
1.2246 + var no = handle, line = handle, doc = cm.view.doc;
1.2247 + if (typeof handle == "number") line = getLine(doc, clipLine(doc, handle));
1.2248 + else no = lineNo(handle);
1.2249 + if (no == null) return null;
1.2250 + if (op(line, no)) regChange(cm, no, no + 1);
1.2251 + else return null;
1.2252 + return line;
1.2253 + }
1.2254 +
1.2255 + function findPosH(cm, dir, unit, visually) {
1.2256 + var doc = cm.view.doc, end = cm.view.sel.head, line = end.line, ch = end.ch;
1.2257 + var lineObj = getLine(doc, line);
1.2258 + function findNextLine() {
1.2259 + var l = line + dir;
1.2260 + if (l < 0 || l == doc.size) return false;
1.2261 + line = l;
1.2262 + return lineObj = getLine(doc, l);
1.2263 + }
1.2264 + function moveOnce(boundToLine) {
1.2265 + var next = (visually ? moveVisually : moveLogically)(lineObj, ch, dir, true);
1.2266 + if (next == null) {
1.2267 + if (!boundToLine && findNextLine()) {
1.2268 + if (visually) ch = (dir < 0 ? lineRight : lineLeft)(lineObj);
1.2269 + else ch = dir < 0 ? lineObj.text.length : 0;
1.2270 + } else return false;
1.2271 + } else ch = next;
1.2272 + return true;
1.2273 + }
1.2274 + if (unit == "char") moveOnce();
1.2275 + else if (unit == "column") moveOnce(true);
1.2276 + else if (unit == "word") {
1.2277 + var sawWord = false;
1.2278 + for (;;) {
1.2279 + if (dir < 0) if (!moveOnce()) break;
1.2280 + if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
1.2281 + else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
1.2282 + if (dir > 0) if (!moveOnce()) break;
1.2283 + }
1.2284 + }
1.2285 + return skipAtomic(cm, {line: line, ch: ch}, dir, true);
1.2286 + }
1.2287 +
1.2288 + function findWordAt(line, pos) {
1.2289 + var start = pos.ch, end = pos.ch;
1.2290 + if (line) {
1.2291 + if (pos.after === false || end == line.length) --start; else ++end;
1.2292 + var startChar = line.charAt(start);
1.2293 + var check = isWordChar(startChar) ? isWordChar :
1.2294 + /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} :
1.2295 + function(ch) {return !/\s/.test(ch) && !isWordChar(ch);};
1.2296 + while (start > 0 && check(line.charAt(start - 1))) --start;
1.2297 + while (end < line.length && check(line.charAt(end))) ++end;
1.2298 + }
1.2299 + return {from: {line: pos.line, ch: start}, to: {line: pos.line, ch: end}};
1.2300 + }
1.2301 +
1.2302 + function selectLine(cm, line) {
1.2303 + extendSelection(cm, {line: line, ch: 0}, clipPos(cm.view.doc, {line: line + 1, ch: 0}));
1.2304 + }
1.2305 +
1.2306 + // PROTOTYPE
1.2307 +
1.2308 + // The publicly visible API. Note that operation(null, f) means
1.2309 + // 'wrap f in an operation, performed on its `this` parameter'
1.2310 +
1.2311 + CodeMirror.prototype = {
1.2312 + getValue: function(lineSep) {
1.2313 + var text = [], doc = this.view.doc;
1.2314 + doc.iter(0, doc.size, function(line) { text.push(line.text); });
1.2315 + return text.join(lineSep || "\n");
1.2316 + },
1.2317 +
1.2318 + setValue: operation(null, function(code) {
1.2319 + var doc = this.view.doc, top = {line: 0, ch: 0}, lastLen = getLine(doc, doc.size-1).text.length;
1.2320 + updateDocInner(this, top, {line: doc.size - 1, ch: lastLen}, splitLines(code), top, top, "setValue");
1.2321 + }),
1.2322 +
1.2323 + getSelection: function(lineSep) { return this.getRange(this.view.sel.from, this.view.sel.to, lineSep); },
1.2324 +
1.2325 + replaceSelection: operation(null, function(code, collapse, origin) {
1.2326 + var sel = this.view.sel;
1.2327 + updateDoc(this, sel.from, sel.to, splitLines(code), collapse || "around", origin);
1.2328 + }),
1.2329 +
1.2330 + focus: function(){window.focus(); focusInput(this); onFocus(this); fastPoll(this);},
1.2331 +
1.2332 + setOption: function(option, value) {
1.2333 + var options = this.options, old = options[option];
1.2334 + if (options[option] == value && option != "mode") return;
1.2335 + options[option] = value;
1.2336 + if (optionHandlers.hasOwnProperty(option))
1.2337 + operation(this, optionHandlers[option])(this, value, old);
1.2338 + },
1.2339 +
1.2340 + getOption: function(option) {return this.options[option];},
1.2341 +
1.2342 + getMode: function() {return this.view.mode;},
1.2343 +
1.2344 + addKeyMap: function(map) {
1.2345 + this.view.keyMaps.push(map);
1.2346 + },
1.2347 +
1.2348 + removeKeyMap: function(map) {
1.2349 + var maps = this.view.keyMaps;
1.2350 + for (var i = 0; i < maps.length; ++i)
1.2351 + if ((typeof map == "string" ? maps[i].name : maps[i]) == map) {
1.2352 + maps.splice(i, 1);
1.2353 + return true;
1.2354 + }
1.2355 + },
1.2356 +
1.2357 + undo: operation(null, function() {unredoHelper(this, "undo");}),
1.2358 + redo: operation(null, function() {unredoHelper(this, "redo");}),
1.2359 +
1.2360 + indentLine: operation(null, function(n, dir, aggressive) {
1.2361 + if (typeof dir != "string") {
1.2362 + if (dir == null) dir = this.options.smartIndent ? "smart" : "prev";
1.2363 + else dir = dir ? "add" : "subtract";
1.2364 + }
1.2365 + if (isLine(this.view.doc, n)) indentLine(this, n, dir, aggressive);
1.2366 + }),
1.2367 +
1.2368 + indentSelection: operation(null, function(how) {
1.2369 + var sel = this.view.sel;
1.2370 + if (posEq(sel.from, sel.to)) return indentLine(this, sel.from.line, how);
1.2371 + var e = sel.to.line - (sel.to.ch ? 0 : 1);
1.2372 + for (var i = sel.from.line; i <= e; ++i) indentLine(this, i, how);
1.2373 + }),
1.2374 +
1.2375 + historySize: function() {
1.2376 + var hist = this.view.history;
1.2377 + return {undo: hist.done.length, redo: hist.undone.length};
1.2378 + },
1.2379 +
1.2380 + clearHistory: function() {this.view.history = makeHistory();},
1.2381 +
1.2382 + markClean: function() {
1.2383 + this.view.history.dirtyCounter = 0;
1.2384 + this.view.history.lastOp = this.view.history.lastOrigin = null;
1.2385 + },
1.2386 +
1.2387 + isClean: function () {return this.view.history.dirtyCounter == 0;},
1.2388 +
1.2389 + getHistory: function() {
1.2390 + var hist = this.view.history;
1.2391 + function cp(arr) {
1.2392 + for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {
1.2393 + var set = arr[i];
1.2394 + nw.push({events: nwelt = [], fromBefore: set.fromBefore, toBefore: set.toBefore,
1.2395 + fromAfter: set.fromAfter, toAfter: set.toAfter});
1.2396 + for (var j = 0, elt = set.events; j < elt.length; ++j) {
1.2397 + var old = [], cur = elt[j];
1.2398 + nwelt.push({start: cur.start, added: cur.added, old: old});
1.2399 + for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));
1.2400 + }
1.2401 + }
1.2402 + return nw;
1.2403 + }
1.2404 + return {done: cp(hist.done), undone: cp(hist.undone)};
1.2405 + },
1.2406 +
1.2407 + setHistory: function(histData) {
1.2408 + var hist = this.view.history = makeHistory();
1.2409 + hist.done = histData.done;
1.2410 + hist.undone = histData.undone;
1.2411 + },
1.2412 +
1.2413 + // Fetch the parser token for a given character. Useful for hacks
1.2414 + // that want to inspect the mode state (say, for completion).
1.2415 + getTokenAt: function(pos) {
1.2416 + var doc = this.view.doc;
1.2417 + pos = clipPos(doc, pos);
1.2418 + var state = getStateBefore(this, pos.line), mode = this.view.mode;
1.2419 + var line = getLine(doc, pos.line);
1.2420 + var stream = new StringStream(line.text, this.options.tabSize);
1.2421 + while (stream.pos < pos.ch && !stream.eol()) {
1.2422 + stream.start = stream.pos;
1.2423 + var style = mode.token(stream, state);
1.2424 + }
1.2425 + return {start: stream.start,
1.2426 + end: stream.pos,
1.2427 + string: stream.current(),
1.2428 + className: style || null, // Deprecated, use 'type' instead
1.2429 + type: style || null,
1.2430 + state: state};
1.2431 + },
1.2432 +
1.2433 + getStateAfter: function(line) {
1.2434 + var doc = this.view.doc;
1.2435 + line = clipLine(doc, line == null ? doc.size - 1: line);
1.2436 + return getStateBefore(this, line + 1);
1.2437 + },
1.2438 +
1.2439 + cursorCoords: function(start, mode) {
1.2440 + var pos, sel = this.view.sel;
1.2441 + if (start == null) pos = sel.head;
1.2442 + else if (typeof start == "object") pos = clipPos(this.view.doc, start);
1.2443 + else pos = start ? sel.from : sel.to;
1.2444 + return cursorCoords(this, pos, mode || "page");
1.2445 + },
1.2446 +
1.2447 + charCoords: function(pos, mode) {
1.2448 + return charCoords(this, clipPos(this.view.doc, pos), mode || "page");
1.2449 + },
1.2450 +
1.2451 + coordsChar: function(coords) {
1.2452 + var off = this.display.lineSpace.getBoundingClientRect();
1.2453 + return coordsChar(this, coords.left - off.left, coords.top - off.top);
1.2454 + },
1.2455 +
1.2456 + defaultTextHeight: function() { return textHeight(this.display); },
1.2457 +
1.2458 + markText: operation(null, function(from, to, options) {
1.2459 + return markText(this, clipPos(this.view.doc, from), clipPos(this.view.doc, to),
1.2460 + options, "range");
1.2461 + }),
1.2462 +
1.2463 + setBookmark: operation(null, function(pos, widget) {
1.2464 + pos = clipPos(this.view.doc, pos);
1.2465 + return markText(this, pos, pos, widget ? {replacedWith: widget} : {}, "bookmark");
1.2466 + }),
1.2467 +
1.2468 + findMarksAt: function(pos) {
1.2469 + var doc = this.view.doc;
1.2470 + pos = clipPos(doc, pos);
1.2471 + var markers = [], spans = getLine(doc, pos.line).markedSpans;
1.2472 + if (spans) for (var i = 0; i < spans.length; ++i) {
1.2473 + var span = spans[i];
1.2474 + if ((span.from == null || span.from <= pos.ch) &&
1.2475 + (span.to == null || span.to >= pos.ch))
1.2476 + markers.push(span.marker);
1.2477 + }
1.2478 + return markers;
1.2479 + },
1.2480 +
1.2481 + setGutterMarker: operation(null, function(line, gutterID, value) {
1.2482 + return changeLine(this, line, function(line) {
1.2483 + var markers = line.gutterMarkers || (line.gutterMarkers = {});
1.2484 + markers[gutterID] = value;
1.2485 + if (!value && isEmpty(markers)) line.gutterMarkers = null;
1.2486 + return true;
1.2487 + });
1.2488 + }),
1.2489 +
1.2490 + clearGutter: operation(null, function(gutterID) {
1.2491 + var i = 0, cm = this, doc = cm.view.doc;
1.2492 + doc.iter(0, doc.size, function(line) {
1.2493 + if (line.gutterMarkers && line.gutterMarkers[gutterID]) {
1.2494 + line.gutterMarkers[gutterID] = null;
1.2495 + regChange(cm, i, i + 1);
1.2496 + if (isEmpty(line.gutterMarkers)) line.gutterMarkers = null;
1.2497 + }
1.2498 + ++i;
1.2499 + });
1.2500 + }),
1.2501 +
1.2502 + addLineClass: operation(null, function(handle, where, cls) {
1.2503 + return changeLine(this, handle, function(line) {
1.2504 + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
1.2505 + if (!line[prop]) line[prop] = cls;
1.2506 + else if (new RegExp("\\b" + cls + "\\b").test(line[prop])) return false;
1.2507 + else line[prop] += " " + cls;
1.2508 + return true;
1.2509 + });
1.2510 + }),
1.2511 +
1.2512 + removeLineClass: operation(null, function(handle, where, cls) {
1.2513 + return changeLine(this, handle, function(line) {
1.2514 + var prop = where == "text" ? "textClass" : where == "background" ? "bgClass" : "wrapClass";
1.2515 + var cur = line[prop];
1.2516 + if (!cur) return false;
1.2517 + else if (cls == null) line[prop] = null;
1.2518 + else {
1.2519 + var upd = cur.replace(new RegExp("^" + cls + "\\b\\s*|\\s*\\b" + cls + "\\b"), "");
1.2520 + if (upd == cur) return false;
1.2521 + line[prop] = upd || null;
1.2522 + }
1.2523 + return true;
1.2524 + });
1.2525 + }),
1.2526 +
1.2527 + addLineWidget: operation(null, function(handle, node, options) {
1.2528 + var widget = options || {};
1.2529 + widget.node = node;
1.2530 + if (widget.noHScroll) this.display.alignWidgets = true;
1.2531 + changeLine(this, handle, function(line) {
1.2532 + (line.widgets || (line.widgets = [])).push(widget);
1.2533 + widget.line = line;
1.2534 + return true;
1.2535 + });
1.2536 + return widget;
1.2537 + }),
1.2538 +
1.2539 + removeLineWidget: operation(null, function(widget) {
1.2540 + var ws = widget.line.widgets, no = lineNo(widget.line);
1.2541 + if (no == null) return;
1.2542 + for (var i = 0; i < ws.length; ++i) if (ws[i] == widget) ws.splice(i--, 1);
1.2543 + regChange(this, no, no + 1);
1.2544 + }),
1.2545 +
1.2546 + lineInfo: function(line) {
1.2547 + if (typeof line == "number") {
1.2548 + if (!isLine(this.view.doc, line)) return null;
1.2549 + var n = line;
1.2550 + line = getLine(this.view.doc, line);
1.2551 + if (!line) return null;
1.2552 + } else {
1.2553 + var n = lineNo(line);
1.2554 + if (n == null) return null;
1.2555 + }
1.2556 + return {line: n, handle: line, text: line.text, gutterMarkers: line.gutterMarkers,
1.2557 + textClass: line.textClass, bgClass: line.bgClass, wrapClass: line.wrapClass,
1.2558 + widgets: line.widgets};
1.2559 + },
1.2560 +
1.2561 + getViewport: function() { return {from: this.display.showingFrom, to: this.display.showingTo};},
1.2562 +
1.2563 + addWidget: function(pos, node, scroll, vert, horiz) {
1.2564 + var display = this.display;
1.2565 + pos = cursorCoords(this, clipPos(this.view.doc, pos));
1.2566 + var top = pos.top, left = pos.left;
1.2567 + node.style.position = "absolute";
1.2568 + display.sizer.appendChild(node);
1.2569 + if (vert == "over") top = pos.top;
1.2570 + else if (vert == "near") {
1.2571 + var vspace = Math.max(display.wrapper.clientHeight, this.view.doc.height),
1.2572 + hspace = Math.max(display.sizer.clientWidth, display.lineSpace.clientWidth);
1.2573 + if (pos.bottom + node.offsetHeight > vspace && pos.top > node.offsetHeight)
1.2574 + top = pos.top - node.offsetHeight;
1.2575 + if (left + node.offsetWidth > hspace)
1.2576 + left = hspace - node.offsetWidth;
1.2577 + }
1.2578 + node.style.top = (top + paddingTop(display)) + "px";
1.2579 + node.style.left = node.style.right = "";
1.2580 + if (horiz == "right") {
1.2581 + left = display.sizer.clientWidth - node.offsetWidth;
1.2582 + node.style.right = "0px";
1.2583 + } else {
1.2584 + if (horiz == "left") left = 0;
1.2585 + else if (horiz == "middle") left = (display.sizer.clientWidth - node.offsetWidth) / 2;
1.2586 + node.style.left = left + "px";
1.2587 + }
1.2588 + if (scroll)
1.2589 + scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);
1.2590 + },
1.2591 +
1.2592 + lineCount: function() {return this.view.doc.size;},
1.2593 +
1.2594 + clipPos: function(pos) {return clipPos(this.view.doc, pos);},
1.2595 +
1.2596 + getCursor: function(start) {
1.2597 + var sel = this.view.sel, pos;
1.2598 + if (start == null || start == "head") pos = sel.head;
1.2599 + else if (start == "anchor") pos = sel.anchor;
1.2600 + else if (start == "end" || start === false) pos = sel.to;
1.2601 + else pos = sel.from;
1.2602 + return copyPos(pos);
1.2603 + },
1.2604 +
1.2605 + somethingSelected: function() {return !posEq(this.view.sel.from, this.view.sel.to);},
1.2606 +
1.2607 + setCursor: operation(null, function(line, ch, extend) {
1.2608 + var pos = clipPos(this.view.doc, typeof line == "number" ? {line: line, ch: ch || 0} : line);
1.2609 + if (extend) extendSelection(this, pos);
1.2610 + else setSelection(this, pos, pos);
1.2611 + }),
1.2612 +
1.2613 + setSelection: operation(null, function(anchor, head) {
1.2614 + var doc = this.view.doc;
1.2615 + setSelection(this, clipPos(doc, anchor), clipPos(doc, head || anchor));
1.2616 + }),
1.2617 +
1.2618 + extendSelection: operation(null, function(from, to) {
1.2619 + var doc = this.view.doc;
1.2620 + extendSelection(this, clipPos(doc, from), to && clipPos(doc, to));
1.2621 + }),
1.2622 +
1.2623 + setExtending: function(val) {this.view.sel.extend = val;},
1.2624 +
1.2625 + getLine: function(line) {var l = this.getLineHandle(line); return l && l.text;},
1.2626 +
1.2627 + getLineHandle: function(line) {
1.2628 + var doc = this.view.doc;
1.2629 + if (isLine(doc, line)) return getLine(doc, line);
1.2630 + },
1.2631 +
1.2632 + getLineNumber: function(line) {return lineNo(line);},
1.2633 +
1.2634 + setLine: operation(null, function(line, text) {
1.2635 + if (isLine(this.view.doc, line))
1.2636 + replaceRange(this, text, {line: line, ch: 0}, {line: line, ch: getLine(this.view.doc, line).text.length});
1.2637 + }),
1.2638 +
1.2639 + removeLine: operation(null, function(line) {
1.2640 + if (isLine(this.view.doc, line))
1.2641 + replaceRange(this, "", {line: line, ch: 0}, clipPos(this.view.doc, {line: line+1, ch: 0}));
1.2642 + }),
1.2643 +
1.2644 + replaceRange: operation(null, function(code, from, to) {
1.2645 + var doc = this.view.doc;
1.2646 + from = clipPos(doc, from);
1.2647 + to = to ? clipPos(doc, to) : from;
1.2648 + return replaceRange(this, code, from, to);
1.2649 + }),
1.2650 +
1.2651 + getRange: function(from, to, lineSep) {
1.2652 + var doc = this.view.doc;
1.2653 + from = clipPos(doc, from); to = clipPos(doc, to);
1.2654 + var l1 = from.line, l2 = to.line;
1.2655 + if (l1 == l2) return getLine(doc, l1).text.slice(from.ch, to.ch);
1.2656 + var code = [getLine(doc, l1).text.slice(from.ch)];
1.2657 + doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
1.2658 + code.push(getLine(doc, l2).text.slice(0, to.ch));
1.2659 + return code.join(lineSep || "\n");
1.2660 + },
1.2661 +
1.2662 + triggerOnKeyDown: operation(null, onKeyDown),
1.2663 +
1.2664 + execCommand: function(cmd) {return commands[cmd](this);},
1.2665 +
1.2666 + // Stuff used by commands, probably not much use to outside code.
1.2667 + moveH: operation(null, function(dir, unit) {
1.2668 + var sel = this.view.sel, pos = dir < 0 ? sel.from : sel.to;
1.2669 + if (sel.shift || sel.extend || posEq(sel.from, sel.to)) pos = findPosH(this, dir, unit, true);
1.2670 + extendSelection(this, pos, pos, dir);
1.2671 + }),
1.2672 +
1.2673 + deleteH: operation(null, function(dir, unit) {
1.2674 + var sel = this.view.sel;
1.2675 + if (!posEq(sel.from, sel.to)) replaceRange(this, "", sel.from, sel.to, "delete");
1.2676 + else replaceRange(this, "", sel.from, findPosH(this, dir, unit, false), "delete");
1.2677 + this.curOp.userSelChange = true;
1.2678 + }),
1.2679 +
1.2680 + moveV: operation(null, function(dir, unit) {
1.2681 + var view = this.view, doc = view.doc, display = this.display;
1.2682 + var cur = view.sel.head, pos = cursorCoords(this, cur, "div");
1.2683 + var x = pos.left, y;
1.2684 + if (view.goalColumn != null) x = view.goalColumn;
1.2685 + if (unit == "page") {
1.2686 + var pageSize = Math.min(display.wrapper.clientHeight, window.innerHeight || document.documentElement.clientHeight);
1.2687 + y = pos.top + dir * pageSize;
1.2688 + } else if (unit == "line") {
1.2689 + y = dir > 0 ? pos.bottom + 3 : pos.top - 3;
1.2690 + }
1.2691 + do {
1.2692 + var target = coordsChar(this, x, y);
1.2693 + y += dir * 5;
1.2694 + } while (target.outside && (dir < 0 ? y > 0 : y < doc.height));
1.2695 +
1.2696 + if (unit == "page") display.scrollbarV.scrollTop += charCoords(this, target, "div").top - pos.top;
1.2697 + extendSelection(this, target, target, dir);
1.2698 + view.goalColumn = x;
1.2699 + }),
1.2700 +
1.2701 + toggleOverwrite: function() {
1.2702 + if (this.view.overwrite = !this.view.overwrite)
1.2703 + this.display.cursor.className += " CodeMirror-overwrite";
1.2704 + else
1.2705 + this.display.cursor.className = this.display.cursor.className.replace(" CodeMirror-overwrite", "");
1.2706 + },
1.2707 +
1.2708 + posFromIndex: function(off) {
1.2709 + var lineNo = 0, ch, doc = this.view.doc;
1.2710 + doc.iter(0, doc.size, function(line) {
1.2711 + var sz = line.text.length + 1;
1.2712 + if (sz > off) { ch = off; return true; }
1.2713 + off -= sz;
1.2714 + ++lineNo;
1.2715 + });
1.2716 + return clipPos(doc, {line: lineNo, ch: ch});
1.2717 + },
1.2718 + indexFromPos: function (coords) {
1.2719 + if (coords.line < 0 || coords.ch < 0) return 0;
1.2720 + var index = coords.ch;
1.2721 + this.view.doc.iter(0, coords.line, function (line) {
1.2722 + index += line.text.length + 1;
1.2723 + });
1.2724 + return index;
1.2725 + },
1.2726 +
1.2727 + scrollTo: function(x, y) {
1.2728 + if (x != null) this.display.scrollbarH.scrollLeft = this.display.scroller.scrollLeft = x;
1.2729 + if (y != null) this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = y;
1.2730 + updateDisplay(this, []);
1.2731 + },
1.2732 + getScrollInfo: function() {
1.2733 + var scroller = this.display.scroller, co = scrollerCutOff;
1.2734 + return {left: scroller.scrollLeft, top: scroller.scrollTop,
1.2735 + height: scroller.scrollHeight - co, width: scroller.scrollWidth - co,
1.2736 + clientHeight: scroller.clientHeight - co, clientWidth: scroller.clientWidth - co};
1.2737 + },
1.2738 +
1.2739 + scrollIntoView: function(pos) {
1.2740 + if (typeof pos == "number") pos = {line: pos, ch: 0};
1.2741 + pos = pos ? clipPos(this.view.doc, pos) : this.view.sel.head;
1.2742 + scrollPosIntoView(this, pos);
1.2743 + },
1.2744 +
1.2745 + setSize: function(width, height) {
1.2746 + function interpret(val) {
1.2747 + return typeof val == "number" || /^\d+$/.test(String(val)) ? val + "px" : val;
1.2748 + }
1.2749 + if (width != null) this.display.wrapper.style.width = interpret(width);
1.2750 + if (height != null) this.display.wrapper.style.height = interpret(height);
1.2751 + this.refresh();
1.2752 + },
1.2753 +
1.2754 + on: function(type, f) {on(this, type, f);},
1.2755 + off: function(type, f) {off(this, type, f);},
1.2756 +
1.2757 + operation: function(f){return operation(this, f)();},
1.2758 +
1.2759 + refresh: function() {
1.2760 + clearCaches(this);
1.2761 + if (this.display.scroller.scrollHeight > this.view.scrollTop)
1.2762 + this.display.scrollbarV.scrollTop = this.display.scroller.scrollTop = this.view.scrollTop;
1.2763 + updateDisplay(this, true);
1.2764 + },
1.2765 +
1.2766 + getInputField: function(){return this.display.input;},
1.2767 + getWrapperElement: function(){return this.display.wrapper;},
1.2768 + getScrollerElement: function(){return this.display.scroller;},
1.2769 + getGutterElement: function(){return this.display.gutters;}
1.2770 + };
1.2771 +
1.2772 + // OPTION DEFAULTS
1.2773 +
1.2774 + var optionHandlers = CodeMirror.optionHandlers = {};
1.2775 +
1.2776 + // The default configuration options.
1.2777 + var defaults = CodeMirror.defaults = {};
1.2778 +
1.2779 + function option(name, deflt, handle, notOnInit) {
1.2780 + CodeMirror.defaults[name] = deflt;
1.2781 + if (handle) optionHandlers[name] =
1.2782 + notOnInit ? function(cm, val, old) {if (old != Init) handle(cm, val, old);} : handle;
1.2783 + }
1.2784 +
1.2785 + var Init = CodeMirror.Init = {toString: function(){return "CodeMirror.Init";}};
1.2786 +
1.2787 + // These two are, on init, called from the constructor because they
1.2788 + // have to be initialized before the editor can start at all.
1.2789 + option("value", "", function(cm, val) {cm.setValue(val);}, true);
1.2790 + option("mode", null, loadMode, true);
1.2791 +
1.2792 + option("indentUnit", 2, loadMode, true);
1.2793 + option("indentWithTabs", false);
1.2794 + option("smartIndent", true);
1.2795 + option("tabSize", 4, function(cm) {
1.2796 + loadMode(cm);
1.2797 + clearCaches(cm);
1.2798 + updateDisplay(cm, true);
1.2799 + }, true);
1.2800 + option("electricChars", true);
1.2801 +
1.2802 + option("theme", "default", function(cm) {
1.2803 + themeChanged(cm);
1.2804 + guttersChanged(cm);
1.2805 + }, true);
1.2806 + option("keyMap", "default", keyMapChanged);
1.2807 + option("extraKeys", null);
1.2808 +
1.2809 + option("onKeyEvent", null);
1.2810 + option("onDragEvent", null);
1.2811 +
1.2812 + option("lineWrapping", false, wrappingChanged, true);
1.2813 + option("gutters", [], function(cm) {
1.2814 + setGuttersForLineNumbers(cm.options);
1.2815 + guttersChanged(cm);
1.2816 + }, true);
1.2817 + option("lineNumbers", false, function(cm) {
1.2818 + setGuttersForLineNumbers(cm.options);
1.2819 + guttersChanged(cm);
1.2820 + }, true);
1.2821 + option("firstLineNumber", 1, guttersChanged, true);
1.2822 + option("lineNumberFormatter", function(integer) {return integer;}, guttersChanged, true);
1.2823 + option("showCursorWhenSelecting", false, updateSelection, true);
1.2824 +
1.2825 + option("readOnly", false, function(cm, val) {
1.2826 + if (val == "nocursor") {onBlur(cm); cm.display.input.blur();}
1.2827 + else if (!val) resetInput(cm, true);
1.2828 + });
1.2829 + option("dragDrop", true);
1.2830 +
1.2831 + option("cursorBlinkRate", 530);
1.2832 + option("cursorHeight", 1);
1.2833 + option("workTime", 100);
1.2834 + option("workDelay", 100);
1.2835 + option("flattenSpans", true);
1.2836 + option("pollInterval", 100);
1.2837 + option("undoDepth", 40);
1.2838 + option("viewportMargin", 10, function(cm){cm.refresh();}, true);
1.2839 +
1.2840 + option("tabindex", null, function(cm, val) {
1.2841 + cm.display.input.tabIndex = val || "";
1.2842 + });
1.2843 + option("autofocus", null);
1.2844 +
1.2845 + // MODE DEFINITION AND QUERYING
1.2846 +
1.2847 + // Known modes, by name and by MIME
1.2848 + var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
1.2849 +
1.2850 + CodeMirror.defineMode = function(name, mode) {
1.2851 + if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
1.2852 + if (arguments.length > 2) {
1.2853 + mode.dependencies = [];
1.2854 + for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
1.2855 + }
1.2856 + modes[name] = mode;
1.2857 + };
1.2858 +
1.2859 + CodeMirror.defineMIME = function(mime, spec) {
1.2860 + mimeModes[mime] = spec;
1.2861 + };
1.2862 +
1.2863 + CodeMirror.resolveMode = function(spec) {
1.2864 + if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
1.2865 + spec = mimeModes[spec];
1.2866 + else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec))
1.2867 + return CodeMirror.resolveMode("application/xml");
1.2868 + if (typeof spec == "string") return {name: spec};
1.2869 + else return spec || {name: "null"};
1.2870 + };
1.2871 +
1.2872 + CodeMirror.getMode = function(options, spec) {
1.2873 + var spec = CodeMirror.resolveMode(spec);
1.2874 + var mfactory = modes[spec.name];
1.2875 + if (!mfactory) return CodeMirror.getMode(options, "text/plain");
1.2876 + var modeObj = mfactory(options, spec);
1.2877 + if (modeExtensions.hasOwnProperty(spec.name)) {
1.2878 + var exts = modeExtensions[spec.name];
1.2879 + for (var prop in exts) {
1.2880 + if (!exts.hasOwnProperty(prop)) continue;
1.2881 + if (modeObj.hasOwnProperty(prop)) modeObj["_" + prop] = modeObj[prop];
1.2882 + modeObj[prop] = exts[prop];
1.2883 + }
1.2884 + }
1.2885 + modeObj.name = spec.name;
1.2886 + return modeObj;
1.2887 + };
1.2888 +
1.2889 + CodeMirror.defineMode("null", function() {
1.2890 + return {token: function(stream) {stream.skipToEnd();}};
1.2891 + });
1.2892 + CodeMirror.defineMIME("text/plain", "null");
1.2893 +
1.2894 + var modeExtensions = CodeMirror.modeExtensions = {};
1.2895 + CodeMirror.extendMode = function(mode, properties) {
1.2896 + var exts = modeExtensions.hasOwnProperty(mode) ? modeExtensions[mode] : (modeExtensions[mode] = {});
1.2897 + for (var prop in properties) if (properties.hasOwnProperty(prop))
1.2898 + exts[prop] = properties[prop];
1.2899 + };
1.2900 +
1.2901 + // EXTENSIONS
1.2902 +
1.2903 + CodeMirror.defineExtension = function(name, func) {
1.2904 + CodeMirror.prototype[name] = func;
1.2905 + };
1.2906 +
1.2907 + CodeMirror.defineOption = option;
1.2908 +
1.2909 + var initHooks = [];
1.2910 + CodeMirror.defineInitHook = function(f) {initHooks.push(f);};
1.2911 +
1.2912 + // MODE STATE HANDLING
1.2913 +
1.2914 + // Utility functions for working with state. Exported because modes
1.2915 + // sometimes need to do this.
1.2916 + function copyState(mode, state) {
1.2917 + if (state === true) return state;
1.2918 + if (mode.copyState) return mode.copyState(state);
1.2919 + var nstate = {};
1.2920 + for (var n in state) {
1.2921 + var val = state[n];
1.2922 + if (val instanceof Array) val = val.concat([]);
1.2923 + nstate[n] = val;
1.2924 + }
1.2925 + return nstate;
1.2926 + }
1.2927 + CodeMirror.copyState = copyState;
1.2928 +
1.2929 + function startState(mode, a1, a2) {
1.2930 + return mode.startState ? mode.startState(a1, a2) : true;
1.2931 + }
1.2932 + CodeMirror.startState = startState;
1.2933 +
1.2934 + CodeMirror.innerMode = function(mode, state) {
1.2935 + while (mode.innerMode) {
1.2936 + var info = mode.innerMode(state);
1.2937 + state = info.state;
1.2938 + mode = info.mode;
1.2939 + }
1.2940 + return info || {mode: mode, state: state};
1.2941 + };
1.2942 +
1.2943 + // STANDARD COMMANDS
1.2944 +
1.2945 + var commands = CodeMirror.commands = {
1.2946 + selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
1.2947 + killLine: function(cm) {
1.2948 + var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
1.2949 + if (!sel && cm.getLine(from.line).length == from.ch)
1.2950 + cm.replaceRange("", from, {line: from.line + 1, ch: 0}, "delete");
1.2951 + else cm.replaceRange("", from, sel ? to : {line: from.line}, "delete");
1.2952 + },
1.2953 + deleteLine: function(cm) {
1.2954 + var l = cm.getCursor().line;
1.2955 + cm.replaceRange("", {line: l, ch: 0}, {line: l}, "delete");
1.2956 + },
1.2957 + undo: function(cm) {cm.undo();},
1.2958 + redo: function(cm) {cm.redo();},
1.2959 + goDocStart: function(cm) {cm.extendSelection({line: 0, ch: 0});},
1.2960 + goDocEnd: function(cm) {cm.extendSelection({line: cm.lineCount() - 1});},
1.2961 + goLineStart: function(cm) {
1.2962 + cm.extendSelection(lineStart(cm, cm.getCursor().line));
1.2963 + },
1.2964 + goLineStartSmart: function(cm) {
1.2965 + var cur = cm.getCursor(), start = lineStart(cm, cur.line);
1.2966 + var line = cm.getLineHandle(start.line);
1.2967 + var order = getOrder(line);
1.2968 + if (!order || order[0].level == 0) {
1.2969 + var firstNonWS = Math.max(0, line.text.search(/\S/));
1.2970 + var inWS = cur.line == start.line && cur.ch <= firstNonWS && cur.ch;
1.2971 + cm.extendSelection({line: start.line, ch: inWS ? 0 : firstNonWS});
1.2972 + } else cm.extendSelection(start);
1.2973 + },
1.2974 + goLineEnd: function(cm) {
1.2975 + cm.extendSelection(lineEnd(cm, cm.getCursor().line));
1.2976 + },
1.2977 + goLineUp: function(cm) {cm.moveV(-1, "line");},
1.2978 + goLineDown: function(cm) {cm.moveV(1, "line");},
1.2979 + goPageUp: function(cm) {cm.moveV(-1, "page");},
1.2980 + goPageDown: function(cm) {cm.moveV(1, "page");},
1.2981 + goCharLeft: function(cm) {cm.moveH(-1, "char");},
1.2982 + goCharRight: function(cm) {cm.moveH(1, "char");},
1.2983 + goColumnLeft: function(cm) {cm.moveH(-1, "column");},
1.2984 + goColumnRight: function(cm) {cm.moveH(1, "column");},
1.2985 + goWordLeft: function(cm) {cm.moveH(-1, "word");},
1.2986 + goWordRight: function(cm) {cm.moveH(1, "word");},
1.2987 + delCharBefore: function(cm) {cm.deleteH(-1, "char");},
1.2988 + delCharAfter: function(cm) {cm.deleteH(1, "char");},
1.2989 + delWordBefore: function(cm) {cm.deleteH(-1, "word");},
1.2990 + delWordAfter: function(cm) {cm.deleteH(1, "word");},
1.2991 + indentAuto: function(cm) {cm.indentSelection("smart");},
1.2992 + indentMore: function(cm) {cm.indentSelection("add");},
1.2993 + indentLess: function(cm) {cm.indentSelection("subtract");},
1.2994 + insertTab: function(cm) {cm.replaceSelection("\t", "end", "input");},
1.2995 + defaultTab: function(cm) {
1.2996 + if (cm.somethingSelected()) cm.indentSelection("add");
1.2997 + else cm.replaceSelection("\t", "end", "input");
1.2998 + },
1.2999 + transposeChars: function(cm) {
1.3000 + var cur = cm.getCursor(), line = cm.getLine(cur.line);
1.3001 + if (cur.ch > 0 && cur.ch < line.length - 1)
1.3002 + cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
1.3003 + {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
1.3004 + },
1.3005 + newlineAndIndent: function(cm) {
1.3006 + operation(cm, function() {
1.3007 + cm.replaceSelection("\n", "end", "input");
1.3008 + cm.indentLine(cm.getCursor().line, null, true);
1.3009 + })();
1.3010 + },
1.3011 + toggleOverwrite: function(cm) {cm.toggleOverwrite();}
1.3012 + };
1.3013 +
1.3014 + // STANDARD KEYMAPS
1.3015 +
1.3016 + var keyMap = CodeMirror.keyMap = {};
1.3017 + keyMap.basic = {
1.3018 + "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
1.3019 + "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
1.3020 + "Delete": "delCharAfter", "Backspace": "delCharBefore", "Tab": "defaultTab", "Shift-Tab": "indentAuto",
1.3021 + "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
1.3022 + };
1.3023 + // Note that the save and find-related commands aren't defined by
1.3024 + // default. Unknown commands are simply ignored.
1.3025 + keyMap.pcDefault = {
1.3026 + "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
1.3027 + "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
1.3028 + "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
1.3029 + "Ctrl-Backspace": "delWordBefore", "Ctrl-Delete": "delWordAfter", "Ctrl-S": "save", "Ctrl-F": "find",
1.3030 + "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
1.3031 + "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
1.3032 + fallthrough: "basic"
1.3033 + };
1.3034 + keyMap.macDefault = {
1.3035 + "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
1.3036 + "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
1.3037 + "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordBefore",
1.3038 + "Ctrl-Alt-Backspace": "delWordAfter", "Alt-Delete": "delWordAfter", "Cmd-S": "save", "Cmd-F": "find",
1.3039 + "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
1.3040 + "Cmd-[": "indentLess", "Cmd-]": "indentMore",
1.3041 + fallthrough: ["basic", "emacsy"]
1.3042 + };
1.3043 + keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
1.3044 + keyMap.emacsy = {
1.3045 + "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
1.3046 + "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
1.3047 + "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
1.3048 + "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
1.3049 + };
1.3050 +
1.3051 + // KEYMAP DISPATCH
1.3052 +
1.3053 + function getKeyMap(val) {
1.3054 + if (typeof val == "string") return keyMap[val];
1.3055 + else return val;
1.3056 + }
1.3057 +
1.3058 + function lookupKey(name, maps, handle, stop) {
1.3059 + function lookup(map) {
1.3060 + map = getKeyMap(map);
1.3061 + var found = map[name];
1.3062 + if (found === false) {
1.3063 + if (stop) stop();
1.3064 + return true;
1.3065 + }
1.3066 + if (found != null && handle(found)) return true;
1.3067 + if (map.nofallthrough) {
1.3068 + if (stop) stop();
1.3069 + return true;
1.3070 + }
1.3071 + var fallthrough = map.fallthrough;
1.3072 + if (fallthrough == null) return false;
1.3073 + if (Object.prototype.toString.call(fallthrough) != "[object Array]")
1.3074 + return lookup(fallthrough);
1.3075 + for (var i = 0, e = fallthrough.length; i < e; ++i) {
1.3076 + if (lookup(fallthrough[i])) return true;
1.3077 + }
1.3078 + return false;
1.3079 + }
1.3080 +
1.3081 + for (var i = 0; i < maps.length; ++i)
1.3082 + if (lookup(maps[i])) return true;
1.3083 + }
1.3084 + function isModifierKey(event) {
1.3085 + var name = keyNames[e_prop(event, "keyCode")];
1.3086 + return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
1.3087 + }
1.3088 + CodeMirror.isModifierKey = isModifierKey;
1.3089 +
1.3090 + // FROMTEXTAREA
1.3091 +
1.3092 + CodeMirror.fromTextArea = function(textarea, options) {
1.3093 + if (!options) options = {};
1.3094 + options.value = textarea.value;
1.3095 + if (!options.tabindex && textarea.tabindex)
1.3096 + options.tabindex = textarea.tabindex;
1.3097 + // Set autofocus to true if this textarea is focused, or if it has
1.3098 + // autofocus and no other element is focused.
1.3099 + if (options.autofocus == null) {
1.3100 + var hasFocus = document.body;
1.3101 + // doc.activeElement occasionally throws on IE
1.3102 + try { hasFocus = document.activeElement; } catch(e) {}
1.3103 + options.autofocus = hasFocus == textarea ||
1.3104 + textarea.getAttribute("autofocus") != null && hasFocus == document.body;
1.3105 + }
1.3106 +
1.3107 + function save() {textarea.value = cm.getValue();}
1.3108 + if (textarea.form) {
1.3109 + // Deplorable hack to make the submit method do the right thing.
1.3110 + on(textarea.form, "submit", save);
1.3111 + var form = textarea.form, realSubmit = form.submit;
1.3112 + try {
1.3113 + form.submit = function wrappedSubmit() {
1.3114 + save();
1.3115 + form.submit = realSubmit;
1.3116 + form.submit();
1.3117 + form.submit = wrappedSubmit;
1.3118 + };
1.3119 + } catch(e) {}
1.3120 + }
1.3121 +
1.3122 + textarea.style.display = "none";
1.3123 + var cm = CodeMirror(function(node) {
1.3124 + textarea.parentNode.insertBefore(node, textarea.nextSibling);
1.3125 + }, options);
1.3126 + cm.save = save;
1.3127 + cm.getTextArea = function() { return textarea; };
1.3128 + cm.toTextArea = function() {
1.3129 + save();
1.3130 + textarea.parentNode.removeChild(cm.getWrapperElement());
1.3131 + textarea.style.display = "";
1.3132 + if (textarea.form) {
1.3133 + off(textarea.form, "submit", save);
1.3134 + if (typeof textarea.form.submit == "function")
1.3135 + textarea.form.submit = realSubmit;
1.3136 + }
1.3137 + };
1.3138 + return cm;
1.3139 + };
1.3140 +
1.3141 + // STRING STREAM
1.3142 +
1.3143 + // Fed to the mode parsers, provides helper functions to make
1.3144 + // parsers more succinct.
1.3145 +
1.3146 + // The character stream used by a mode's parser.
1.3147 + function StringStream(string, tabSize) {
1.3148 + this.pos = this.start = 0;
1.3149 + this.string = string;
1.3150 + this.tabSize = tabSize || 8;
1.3151 + }
1.3152 +
1.3153 + StringStream.prototype = {
1.3154 + eol: function() {return this.pos >= this.string.length;},
1.3155 + sol: function() {return this.pos == 0;},
1.3156 + peek: function() {return this.string.charAt(this.pos) || undefined;},
1.3157 + next: function() {
1.3158 + if (this.pos < this.string.length)
1.3159 + return this.string.charAt(this.pos++);
1.3160 + },
1.3161 + eat: function(match) {
1.3162 + var ch = this.string.charAt(this.pos);
1.3163 + if (typeof match == "string") var ok = ch == match;
1.3164 + else var ok = ch && (match.test ? match.test(ch) : match(ch));
1.3165 + if (ok) {++this.pos; return ch;}
1.3166 + },
1.3167 + eatWhile: function(match) {
1.3168 + var start = this.pos;
1.3169 + while (this.eat(match)){}
1.3170 + return this.pos > start;
1.3171 + },
1.3172 + eatSpace: function() {
1.3173 + var start = this.pos;
1.3174 + while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
1.3175 + return this.pos > start;
1.3176 + },
1.3177 + skipToEnd: function() {this.pos = this.string.length;},
1.3178 + skipTo: function(ch) {
1.3179 + var found = this.string.indexOf(ch, this.pos);
1.3180 + if (found > -1) {this.pos = found; return true;}
1.3181 + },
1.3182 + backUp: function(n) {this.pos -= n;},
1.3183 + column: function() {return countColumn(this.string, this.start, this.tabSize);},
1.3184 + indentation: function() {return countColumn(this.string, null, this.tabSize);},
1.3185 + match: function(pattern, consume, caseInsensitive) {
1.3186 + if (typeof pattern == "string") {
1.3187 + var cased = function(str) {return caseInsensitive ? str.toLowerCase() : str;};
1.3188 + if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
1.3189 + if (consume !== false) this.pos += pattern.length;
1.3190 + return true;
1.3191 + }
1.3192 + } else {
1.3193 + var match = this.string.slice(this.pos).match(pattern);
1.3194 + if (match && match.index > 0) return null;
1.3195 + if (match && consume !== false) this.pos += match[0].length;
1.3196 + return match;
1.3197 + }
1.3198 + },
1.3199 + current: function(){return this.string.slice(this.start, this.pos);}
1.3200 + };
1.3201 + CodeMirror.StringStream = StringStream;
1.3202 +
1.3203 + // TEXTMARKERS
1.3204 +
1.3205 + function TextMarker(cm, type) {
1.3206 + this.lines = [];
1.3207 + this.type = type;
1.3208 + this.cm = cm;
1.3209 + }
1.3210 +
1.3211 + TextMarker.prototype.clear = function() {
1.3212 + if (this.explicitlyCleared) return;
1.3213 + startOperation(this.cm);
1.3214 + var min = null, max = null;
1.3215 + for (var i = 0; i < this.lines.length; ++i) {
1.3216 + var line = this.lines[i];
1.3217 + var span = getMarkedSpanFor(line.markedSpans, this);
1.3218 + if (span.to != null) max = lineNo(line);
1.3219 + line.markedSpans = removeMarkedSpan(line.markedSpans, span);
1.3220 + if (span.from != null)
1.3221 + min = lineNo(line);
1.3222 + else if (this.collapsed && !lineIsHidden(line))
1.3223 + updateLineHeight(line, textHeight(this.cm.display));
1.3224 + }
1.3225 + if (min != null) regChange(this.cm, min, max + 1);
1.3226 + this.lines.length = 0;
1.3227 + this.explicitlyCleared = true;
1.3228 + if (this.collapsed && this.cm.view.cantEdit) {
1.3229 + this.cm.view.cantEdit = false;
1.3230 + reCheckSelection(this.cm);
1.3231 + }
1.3232 + endOperation(this.cm);
1.3233 + signalLater(this.cm, this, "clear");
1.3234 + };
1.3235 +
1.3236 + TextMarker.prototype.find = function() {
1.3237 + var from, to;
1.3238 + for (var i = 0; i < this.lines.length; ++i) {
1.3239 + var line = this.lines[i];
1.3240 + var span = getMarkedSpanFor(line.markedSpans, this);
1.3241 + if (span.from != null || span.to != null) {
1.3242 + var found = lineNo(line);
1.3243 + if (span.from != null) from = {line: found, ch: span.from};
1.3244 + if (span.to != null) to = {line: found, ch: span.to};
1.3245 + }
1.3246 + }
1.3247 + if (this.type == "bookmark") return from;
1.3248 + return from && {from: from, to: to};
1.3249 + };
1.3250 +
1.3251 + function markText(cm, from, to, options, type) {
1.3252 + var doc = cm.view.doc;
1.3253 + var marker = new TextMarker(cm, type);
1.3254 + if (type == "range" && !posLess(from, to)) return marker;
1.3255 + if (options) for (var opt in options) if (options.hasOwnProperty(opt))
1.3256 + marker[opt] = options[opt];
1.3257 + if (marker.replacedWith) {
1.3258 + marker.collapsed = true;
1.3259 + marker.replacedWith = elt("span", [marker.replacedWith], "CodeMirror-widget");
1.3260 + }
1.3261 + if (marker.collapsed) sawCollapsedSpans = true;
1.3262 +
1.3263 + var curLine = from.line, size = 0, collapsedAtStart, collapsedAtEnd;
1.3264 + doc.iter(curLine, to.line + 1, function(line) {
1.3265 + var span = {from: null, to: null, marker: marker};
1.3266 + size += line.text.length;
1.3267 + if (curLine == from.line) {span.from = from.ch; size -= from.ch;}
1.3268 + if (curLine == to.line) {span.to = to.ch; size -= line.text.length - to.ch;}
1.3269 + if (marker.collapsed) {
1.3270 + if (curLine == to.line) collapsedAtEnd = collapsedSpanAt(line, to.ch);
1.3271 + if (curLine == from.line) collapsedAtStart = collapsedSpanAt(line, from.ch);
1.3272 + else updateLineHeight(line, 0);
1.3273 + }
1.3274 + addMarkedSpan(line, span);
1.3275 + if (marker.collapsed && curLine == from.line && lineIsHidden(line))
1.3276 + updateLineHeight(line, 0);
1.3277 + ++curLine;
1.3278 + });
1.3279 +
1.3280 + if (marker.readOnly) {
1.3281 + sawReadOnlySpans = true;
1.3282 + if (cm.view.history.done.length || cm.view.history.undone.length)
1.3283 + cm.clearHistory();
1.3284 + }
1.3285 + if (marker.collapsed) {
1.3286 + if (collapsedAtStart != collapsedAtEnd)
1.3287 + throw new Error("Inserting collapsed marker overlapping an existing one");
1.3288 + marker.size = size;
1.3289 + marker.atomic = true;
1.3290 + }
1.3291 + if (marker.className || marker.startStyle || marker.endStyle || marker.collapsed)
1.3292 + regChange(cm, from.line, to.line + 1);
1.3293 + if (marker.atomic) reCheckSelection(cm);
1.3294 + return marker;
1.3295 + }
1.3296 +
1.3297 + // TEXTMARKER SPANS
1.3298 +
1.3299 + function getMarkedSpanFor(spans, marker) {
1.3300 + if (spans) for (var i = 0; i < spans.length; ++i) {
1.3301 + var span = spans[i];
1.3302 + if (span.marker == marker) return span;
1.3303 + }
1.3304 + }
1.3305 + function removeMarkedSpan(spans, span) {
1.3306 + for (var r, i = 0; i < spans.length; ++i)
1.3307 + if (spans[i] != span) (r || (r = [])).push(spans[i]);
1.3308 + return r;
1.3309 + }
1.3310 + function addMarkedSpan(line, span) {
1.3311 + line.markedSpans = line.markedSpans ? line.markedSpans.concat([span]) : [span];
1.3312 + span.marker.lines.push(line);
1.3313 + }
1.3314 +
1.3315 + function markedSpansBefore(old, startCh) {
1.3316 + if (old) for (var i = 0, nw; i < old.length; ++i) {
1.3317 + var span = old[i], marker = span.marker;
1.3318 + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= startCh : span.from < startCh);
1.3319 + if (startsBefore || marker.type == "bookmark" && span.from == startCh) {
1.3320 + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= startCh : span.to > startCh);
1.3321 + (nw || (nw = [])).push({from: span.from,
1.3322 + to: endsAfter ? null : span.to,
1.3323 + marker: marker});
1.3324 + }
1.3325 + }
1.3326 + return nw;
1.3327 + }
1.3328 +
1.3329 + function markedSpansAfter(old, startCh, endCh) {
1.3330 + if (old) for (var i = 0, nw; i < old.length; ++i) {
1.3331 + var span = old[i], marker = span.marker;
1.3332 + var endsAfter = span.to == null || (marker.inclusiveRight ? span.to >= endCh : span.to > endCh);
1.3333 + if (endsAfter || marker.type == "bookmark" && span.from == endCh && span.from != startCh) {
1.3334 + var startsBefore = span.from == null || (marker.inclusiveLeft ? span.from <= endCh : span.from < endCh);
1.3335 + (nw || (nw = [])).push({from: startsBefore ? null : span.from - endCh,
1.3336 + to: span.to == null ? null : span.to - endCh,
1.3337 + marker: marker});
1.3338 + }
1.3339 + }
1.3340 + return nw;
1.3341 + }
1.3342 +
1.3343 + function updateMarkedSpans(oldFirst, oldLast, startCh, endCh, newText) {
1.3344 + if (!oldFirst && !oldLast) return newText;
1.3345 + // Get the spans that 'stick out' on both sides
1.3346 + var first = markedSpansBefore(oldFirst, startCh);
1.3347 + var last = markedSpansAfter(oldLast, startCh, endCh);
1.3348 +
1.3349 + // Next, merge those two ends
1.3350 + var sameLine = newText.length == 1, offset = lst(newText).length + (sameLine ? startCh : 0);
1.3351 + if (first) {
1.3352 + // Fix up .to properties of first
1.3353 + for (var i = 0; i < first.length; ++i) {
1.3354 + var span = first[i];
1.3355 + if (span.to == null) {
1.3356 + var found = getMarkedSpanFor(last, span.marker);
1.3357 + if (!found) span.to = startCh;
1.3358 + else if (sameLine) span.to = found.to == null ? null : found.to + offset;
1.3359 + }
1.3360 + }
1.3361 + }
1.3362 + if (last) {
1.3363 + // Fix up .from in last (or move them into first in case of sameLine)
1.3364 + for (var i = 0; i < last.length; ++i) {
1.3365 + var span = last[i];
1.3366 + if (span.to != null) span.to += offset;
1.3367 + if (span.from == null) {
1.3368 + var found = getMarkedSpanFor(first, span.marker);
1.3369 + if (!found) {
1.3370 + span.from = offset;
1.3371 + if (sameLine) (first || (first = [])).push(span);
1.3372 + }
1.3373 + } else {
1.3374 + span.from += offset;
1.3375 + if (sameLine) (first || (first = [])).push(span);
1.3376 + }
1.3377 + }
1.3378 + }
1.3379 +
1.3380 + var newMarkers = [newHL(newText[0], first)];
1.3381 + if (!sameLine) {
1.3382 + // Fill gap with whole-line-spans
1.3383 + var gap = newText.length - 2, gapMarkers;
1.3384 + if (gap > 0 && first)
1.3385 + for (var i = 0; i < first.length; ++i)
1.3386 + if (first[i].to == null)
1.3387 + (gapMarkers || (gapMarkers = [])).push({from: null, to: null, marker: first[i].marker});
1.3388 + for (var i = 0; i < gap; ++i)
1.3389 + newMarkers.push(newHL(newText[i+1], gapMarkers));
1.3390 + newMarkers.push(newHL(lst(newText), last));
1.3391 + }
1.3392 + return newMarkers;
1.3393 + }
1.3394 +
1.3395 + function removeReadOnlyRanges(doc, from, to) {
1.3396 + var markers = null;
1.3397 + doc.iter(from.line, to.line + 1, function(line) {
1.3398 + if (line.markedSpans) for (var i = 0; i < line.markedSpans.length; ++i) {
1.3399 + var mark = line.markedSpans[i].marker;
1.3400 + if (mark.readOnly && (!markers || indexOf(markers, mark) == -1))
1.3401 + (markers || (markers = [])).push(mark);
1.3402 + }
1.3403 + });
1.3404 + if (!markers) return null;
1.3405 + var parts = [{from: from, to: to}];
1.3406 + for (var i = 0; i < markers.length; ++i) {
1.3407 + var m = markers[i].find();
1.3408 + for (var j = 0; j < parts.length; ++j) {
1.3409 + var p = parts[j];
1.3410 + if (!posLess(m.from, p.to) || posLess(m.to, p.from)) continue;
1.3411 + var newParts = [j, 1];
1.3412 + if (posLess(p.from, m.from)) newParts.push({from: p.from, to: m.from});
1.3413 + if (posLess(m.to, p.to)) newParts.push({from: m.to, to: p.to});
1.3414 + parts.splice.apply(parts, newParts);
1.3415 + j += newParts.length - 1;
1.3416 + }
1.3417 + }
1.3418 + return parts;
1.3419 + }
1.3420 +
1.3421 + function collapsedSpanAt(line, ch) {
1.3422 + var sps = sawCollapsedSpans && line.markedSpans, found;
1.3423 + if (sps) for (var sp, i = 0; i < sps.length; ++i) {
1.3424 + sp = sps[i];
1.3425 + if (!sp.marker.collapsed) continue;
1.3426 + if ((sp.from == null || sp.from < ch) &&
1.3427 + (sp.to == null || sp.to > ch) &&
1.3428 + (!found || found.width < sp.marker.width))
1.3429 + found = sp.marker;
1.3430 + }
1.3431 + return found;
1.3432 + }
1.3433 + function collapsedSpanAtStart(line) { return collapsedSpanAt(line, -1); }
1.3434 + function collapsedSpanAtEnd(line) { return collapsedSpanAt(line, line.text.length + 1); }
1.3435 +
1.3436 + function visualLine(doc, line) {
1.3437 + var merged;
1.3438 + while (merged = collapsedSpanAtStart(line))
1.3439 + line = getLine(doc, merged.find().from.line);
1.3440 + return line;
1.3441 + }
1.3442 +
1.3443 + function lineIsHidden(line) {
1.3444 + var sps = sawCollapsedSpans && line.markedSpans;
1.3445 + if (sps) for (var sp, i = 0; i < sps.length; ++i) {
1.3446 + sp = sps[i];
1.3447 + if (!sp.marker.collapsed) continue;
1.3448 + if (sp.from == null) return true;
1.3449 + if (sp.from == 0 && sp.marker.inclusiveLeft && lineIsHiddenInner(line, sp))
1.3450 + return true;
1.3451 + }
1.3452 + }
1.3453 + window.lineIsHidden = lineIsHidden;
1.3454 + function lineIsHiddenInner(line, span) {
1.3455 + if (span.to == null || span.marker.inclusiveRight && span.to == line.text.length)
1.3456 + return true;
1.3457 + for (var sp, i = 0; i < line.markedSpans.length; ++i) {
1.3458 + sp = line.markedSpans[i];
1.3459 + if (sp.marker.collapsed && sp.from == span.to &&
1.3460 + (sp.marker.inclusiveLeft || span.marker.inclusiveRight) &&
1.3461 + lineIsHiddenInner(line, sp)) return true;
1.3462 + }
1.3463 + }
1.3464 +
1.3465 + // hl stands for history-line, a data structure that can be either a
1.3466 + // string (line without markers) or a {text, markedSpans} object.
1.3467 + function hlText(val) { return typeof val == "string" ? val : val.text; }
1.3468 + function hlSpans(val) {
1.3469 + if (typeof val == "string") return null;
1.3470 + var spans = val.markedSpans, out = null;
1.3471 + for (var i = 0; i < spans.length; ++i) {
1.3472 + if (spans[i].marker.explicitlyCleared) { if (!out) out = spans.slice(0, i); }
1.3473 + else if (out) out.push(spans[i]);
1.3474 + }
1.3475 + return !out ? spans : out.length ? out : null;
1.3476 + }
1.3477 + function newHL(text, spans) { return spans ? {text: text, markedSpans: spans} : text; }
1.3478 +
1.3479 + function detachMarkedSpans(line) {
1.3480 + var spans = line.markedSpans;
1.3481 + if (!spans) return;
1.3482 + for (var i = 0; i < spans.length; ++i) {
1.3483 + var lines = spans[i].marker.lines;
1.3484 + var ix = indexOf(lines, line);
1.3485 + lines.splice(ix, 1);
1.3486 + }
1.3487 + line.markedSpans = null;
1.3488 + }
1.3489 +
1.3490 + function attachMarkedSpans(line, spans) {
1.3491 + if (!spans) return;
1.3492 + for (var i = 0; i < spans.length; ++i)
1.3493 + spans[i].marker.lines.push(line);
1.3494 + line.markedSpans = spans;
1.3495 + }
1.3496 +
1.3497 + // LINE DATA STRUCTURE
1.3498 +
1.3499 + // Line objects. These hold state related to a line, including
1.3500 + // highlighting info (the styles array).
1.3501 + function makeLine(text, markedSpans, height) {
1.3502 + var line = {text: text, height: height};
1.3503 + attachMarkedSpans(line, markedSpans);
1.3504 + if (lineIsHidden(line)) line.height = 0;
1.3505 + return line;
1.3506 + }
1.3507 +
1.3508 + function updateLine(cm, line, text, markedSpans) {
1.3509 + line.text = text;
1.3510 + line.stateAfter = line.styles = null;
1.3511 + if (line.order != null) line.order = null;
1.3512 + detachMarkedSpans(line);
1.3513 + attachMarkedSpans(line, markedSpans);
1.3514 + if (lineIsHidden(line)) line.height = 0;
1.3515 + else if (!line.height) line.height = textHeight(cm.display);
1.3516 + signalLater(cm, line, "change");
1.3517 + }
1.3518 +
1.3519 + function cleanUpLine(line) {
1.3520 + line.parent = null;
1.3521 + detachMarkedSpans(line);
1.3522 + }
1.3523 +
1.3524 + // Run the given mode's parser over a line, update the styles
1.3525 + // array, which contains alternating fragments of text and CSS
1.3526 + // classes.
1.3527 + function highlightLine(cm, line, state) {
1.3528 + var mode = cm.view.mode, flattenSpans = cm.options.flattenSpans;
1.3529 + var changed = !line.styles, pos = 0, curText = "", curStyle = null;
1.3530 + var stream = new StringStream(line.text, cm.options.tabSize), st = line.styles || (line.styles = []);
1.3531 + if (line.text == "" && mode.blankLine) mode.blankLine(state);
1.3532 + while (!stream.eol()) {
1.3533 + var style = mode.token(stream, state), substr = stream.current();
1.3534 + stream.start = stream.pos;
1.3535 + if (!flattenSpans || curStyle != style) {
1.3536 + if (curText) {
1.3537 + changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1];
1.3538 + st[pos++] = curText; st[pos++] = curStyle;
1.3539 + }
1.3540 + curText = substr; curStyle = style;
1.3541 + } else curText = curText + substr;
1.3542 + // Give up when line is ridiculously long
1.3543 + if (stream.pos > 5000) break;
1.3544 + }
1.3545 + if (curText) {
1.3546 + changed = changed || pos >= st.length || curText != st[pos] || curStyle != st[pos+1];
1.3547 + st[pos++] = curText; st[pos++] = curStyle;
1.3548 + }
1.3549 + if (stream.pos > 5000) { st[pos++] = line.text.slice(stream.pos); st[pos++] = null; }
1.3550 + if (pos != st.length) { st.length = pos; changed = true; }
1.3551 + return changed;
1.3552 + }
1.3553 +
1.3554 + // Lightweight form of highlight -- proceed over this line and
1.3555 + // update state, but don't save a style array.
1.3556 + function processLine(cm, line, state) {
1.3557 + var mode = cm.view.mode;
1.3558 + var stream = new StringStream(line.text, cm.options.tabSize);
1.3559 + if (line.text == "" && mode.blankLine) mode.blankLine(state);
1.3560 + while (!stream.eol() && stream.pos <= 5000) {
1.3561 + mode.token(stream, state);
1.3562 + stream.start = stream.pos;
1.3563 + }
1.3564 + }
1.3565 +
1.3566 + var styleToClassCache = {};
1.3567 + function styleToClass(style) {
1.3568 + if (!style) return null;
1.3569 + return styleToClassCache[style] ||
1.3570 + (styleToClassCache[style] = "cm-" + style.replace(/ +/g, " cm-"));
1.3571 + }
1.3572 +
1.3573 + function lineContent(cm, realLine, measure) {
1.3574 + var merged, line = realLine, lineBefore, sawBefore, simple = true;
1.3575 + while (merged = collapsedSpanAtStart(line)) {
1.3576 + simple = false;
1.3577 + line = getLine(cm.view.doc, merged.find().from.line);
1.3578 + if (!lineBefore) lineBefore = line;
1.3579 + }
1.3580 +
1.3581 + var builder = {pre: elt("pre"), col: 0, pos: 0, display: !measure,
1.3582 + measure: null, addedOne: false, cm: cm};
1.3583 + if (line.textClass) builder.pre.className = line.textClass;
1.3584 +
1.3585 + do {
1.3586 + if (!line.styles)
1.3587 + highlightLine(cm, line, line.stateAfter = getStateBefore(cm, lineNo(line)));
1.3588 + builder.measure = line == realLine && measure;
1.3589 + builder.pos = 0;
1.3590 + builder.addToken = builder.measure ? buildTokenMeasure : buildToken;
1.3591 + if (measure && sawBefore && line != realLine && !builder.addedOne) {
1.3592 + measure[0] = builder.pre.appendChild(zeroWidthElement(cm.display.measure));
1.3593 + builder.addedOne = true;
1.3594 + }
1.3595 + var next = insertLineContent(line, builder);
1.3596 + sawBefore = line == lineBefore;
1.3597 + if (next) {
1.3598 + line = getLine(cm.view.doc, next.to.line);
1.3599 + simple = false;
1.3600 + }
1.3601 + } while (next);
1.3602 +
1.3603 + if (measure && !builder.addedOne)
1.3604 + measure[0] = builder.pre.appendChild(simple ? elt("span", "\u00a0") : zeroWidthElement(cm.display.measure));
1.3605 + if (!builder.pre.firstChild && !lineIsHidden(realLine))
1.3606 + builder.pre.appendChild(document.createTextNode("\u00a0"));
1.3607 +
1.3608 + return builder.pre;
1.3609 + }
1.3610 +
1.3611 + var tokenSpecialChars = /[\t\u0000-\u0019\u200b\u2028\u2029\uFEFF]/g;
1.3612 + function buildToken(builder, text, style, startStyle, endStyle) {
1.3613 + if (!text) return;
1.3614 + if (!tokenSpecialChars.test(text)) {
1.3615 + builder.col += text.length;
1.3616 + var content = document.createTextNode(text);
1.3617 + } else {
1.3618 + var content = document.createDocumentFragment(), pos = 0;
1.3619 + while (true) {
1.3620 + tokenSpecialChars.lastIndex = pos;
1.3621 + var m = tokenSpecialChars.exec(text);
1.3622 + var skipped = m ? m.index - pos : text.length - pos;
1.3623 + if (skipped) {
1.3624 + content.appendChild(document.createTextNode(text.slice(pos, pos + skipped)));
1.3625 + builder.col += skipped;
1.3626 + }
1.3627 + if (!m) break;
1.3628 + pos += skipped + 1;
1.3629 + if (m[0] == "\t") {
1.3630 + var tabSize = builder.cm.options.tabSize, tabWidth = tabSize - builder.col % tabSize;
1.3631 + content.appendChild(elt("span", spaceStr(tabWidth), "cm-tab"));
1.3632 + builder.col += tabWidth;
1.3633 + } else {
1.3634 + var token = elt("span", "\u2022", "cm-invalidchar");
1.3635 + token.title = "\\u" + m[0].charCodeAt(0).toString(16);
1.3636 + content.appendChild(token);
1.3637 + builder.col += 1;
1.3638 + }
1.3639 + }
1.3640 + }
1.3641 + if (style || startStyle || endStyle || builder.measure) {
1.3642 + var fullStyle = style || "";
1.3643 + if (startStyle) fullStyle += startStyle;
1.3644 + if (endStyle) fullStyle += endStyle;
1.3645 + return builder.pre.appendChild(elt("span", [content], fullStyle));
1.3646 + }
1.3647 + builder.pre.appendChild(content);
1.3648 + }
1.3649 +
1.3650 + function buildTokenMeasure(builder, text, style, startStyle, endStyle) {
1.3651 + for (var i = 0; i < text.length; ++i) {
1.3652 + if (i && i < text.length - 1 &&
1.3653 + builder.cm.options.lineWrapping &&
1.3654 + spanAffectsWrapping.test(text.slice(i - 1, i + 1)))
1.3655 + builder.pre.appendChild(elt("wbr"));
1.3656 + builder.measure[builder.pos++] =
1.3657 + buildToken(builder, text.charAt(i), style,
1.3658 + i == 0 && startStyle, i == text.length - 1 && endStyle);
1.3659 + }
1.3660 + if (text.length) builder.addedOne = true;
1.3661 + }
1.3662 +
1.3663 + function buildCollapsedSpan(builder, size, widget) {
1.3664 + if (widget) {
1.3665 + if (!builder.display) widget = widget.cloneNode(true);
1.3666 + builder.pre.appendChild(widget);
1.3667 + if (builder.measure && size) {
1.3668 + builder.measure[builder.pos] = widget;
1.3669 + builder.addedOne = true;
1.3670 + }
1.3671 + }
1.3672 + builder.pos += size;
1.3673 + }
1.3674 +
1.3675 + // Outputs a number of spans to make up a line, taking highlighting
1.3676 + // and marked text into account.
1.3677 + function insertLineContent(line, builder) {
1.3678 + var st = line.styles, spans = line.markedSpans;
1.3679 + if (!spans) {
1.3680 + for (var i = 0; i < st.length; i+=2)
1.3681 + builder.addToken(builder, st[i], styleToClass(st[i+1]));
1.3682 + return;
1.3683 + }
1.3684 +
1.3685 + var allText = line.text, len = allText.length;
1.3686 + var pos = 0, i = 0, text = "", style;
1.3687 + var nextChange = 0, spanStyle, spanEndStyle, spanStartStyle, collapsed;
1.3688 + for (;;) {
1.3689 + if (nextChange == pos) { // Update current marker set
1.3690 + spanStyle = spanEndStyle = spanStartStyle = "";
1.3691 + collapsed = null; nextChange = Infinity;
1.3692 + var foundBookmark = null;
1.3693 + for (var j = 0; j < spans.length; ++j) {
1.3694 + var sp = spans[j], m = sp.marker;
1.3695 + if (sp.from <= pos && (sp.to == null || sp.to > pos)) {
1.3696 + if (sp.to != null && nextChange > sp.to) { nextChange = sp.to; spanEndStyle = ""; }
1.3697 + if (m.className) spanStyle += " " + m.className;
1.3698 + if (m.startStyle && sp.from == pos) spanStartStyle += " " + m.startStyle;
1.3699 + if (m.endStyle && sp.to == nextChange) spanEndStyle += " " + m.endStyle;
1.3700 + if (m.collapsed && (!collapsed || collapsed.marker.width < m.width))
1.3701 + collapsed = sp;
1.3702 + } else if (sp.from > pos && nextChange > sp.from) {
1.3703 + nextChange = sp.from;
1.3704 + }
1.3705 + if (m.type == "bookmark" && sp.from == pos && m.replacedWith)
1.3706 + foundBookmark = m.replacedWith;
1.3707 + }
1.3708 + if (collapsed && (collapsed.from || 0) == pos) {
1.3709 + buildCollapsedSpan(builder, (collapsed.to == null ? len : collapsed.to) - pos,
1.3710 + collapsed.from != null && collapsed.marker.replacedWith);
1.3711 + if (collapsed.to == null) return collapsed.marker.find();
1.3712 + }
1.3713 + if (foundBookmark && !collapsed) buildCollapsedSpan(builder, 0, foundBookmark);
1.3714 + }
1.3715 + if (pos >= len) break;
1.3716 +
1.3717 + var upto = Math.min(len, nextChange);
1.3718 + while (true) {
1.3719 + if (text) {
1.3720 + var end = pos + text.length;
1.3721 + if (!collapsed) {
1.3722 + var tokenText = end > upto ? text.slice(0, upto - pos) : text;
1.3723 + builder.addToken(builder, tokenText, style + spanStyle,
1.3724 + spanStartStyle, pos + tokenText.length == nextChange ? spanEndStyle : "");
1.3725 + }
1.3726 + if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
1.3727 + pos = end;
1.3728 + spanStartStyle = "";
1.3729 + }
1.3730 + text = st[i++]; style = styleToClass(st[i++]);
1.3731 + }
1.3732 + }
1.3733 + }
1.3734 +
1.3735 + // DOCUMENT DATA STRUCTURE
1.3736 +
1.3737 + function LeafChunk(lines) {
1.3738 + this.lines = lines;
1.3739 + this.parent = null;
1.3740 + for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
1.3741 + lines[i].parent = this;
1.3742 + height += lines[i].height;
1.3743 + }
1.3744 + this.height = height;
1.3745 + }
1.3746 +
1.3747 + LeafChunk.prototype = {
1.3748 + chunkSize: function() { return this.lines.length; },
1.3749 + remove: function(at, n, cm) {
1.3750 + for (var i = at, e = at + n; i < e; ++i) {
1.3751 + var line = this.lines[i];
1.3752 + this.height -= line.height;
1.3753 + cleanUpLine(line);
1.3754 + signalLater(cm, line, "delete");
1.3755 + }
1.3756 + this.lines.splice(at, n);
1.3757 + },
1.3758 + collapse: function(lines) {
1.3759 + lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
1.3760 + },
1.3761 + insertHeight: function(at, lines, height) {
1.3762 + this.height += height;
1.3763 + this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
1.3764 + for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
1.3765 + },
1.3766 + iterN: function(at, n, op) {
1.3767 + for (var e = at + n; at < e; ++at)
1.3768 + if (op(this.lines[at])) return true;
1.3769 + }
1.3770 + };
1.3771 +
1.3772 + function BranchChunk(children) {
1.3773 + this.children = children;
1.3774 + var size = 0, height = 0;
1.3775 + for (var i = 0, e = children.length; i < e; ++i) {
1.3776 + var ch = children[i];
1.3777 + size += ch.chunkSize(); height += ch.height;
1.3778 + ch.parent = this;
1.3779 + }
1.3780 + this.size = size;
1.3781 + this.height = height;
1.3782 + this.parent = null;
1.3783 + }
1.3784 +
1.3785 + BranchChunk.prototype = {
1.3786 + chunkSize: function() { return this.size; },
1.3787 + remove: function(at, n, callbacks) {
1.3788 + this.size -= n;
1.3789 + for (var i = 0; i < this.children.length; ++i) {
1.3790 + var child = this.children[i], sz = child.chunkSize();
1.3791 + if (at < sz) {
1.3792 + var rm = Math.min(n, sz - at), oldHeight = child.height;
1.3793 + child.remove(at, rm, callbacks);
1.3794 + this.height -= oldHeight - child.height;
1.3795 + if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
1.3796 + if ((n -= rm) == 0) break;
1.3797 + at = 0;
1.3798 + } else at -= sz;
1.3799 + }
1.3800 + if (this.size - n < 25) {
1.3801 + var lines = [];
1.3802 + this.collapse(lines);
1.3803 + this.children = [new LeafChunk(lines)];
1.3804 + this.children[0].parent = this;
1.3805 + }
1.3806 + },
1.3807 + collapse: function(lines) {
1.3808 + for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
1.3809 + },
1.3810 + insert: function(at, lines) {
1.3811 + var height = 0;
1.3812 + for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
1.3813 + this.insertHeight(at, lines, height);
1.3814 + },
1.3815 + insertHeight: function(at, lines, height) {
1.3816 + this.size += lines.length;
1.3817 + this.height += height;
1.3818 + for (var i = 0, e = this.children.length; i < e; ++i) {
1.3819 + var child = this.children[i], sz = child.chunkSize();
1.3820 + if (at <= sz) {
1.3821 + child.insertHeight(at, lines, height);
1.3822 + if (child.lines && child.lines.length > 50) {
1.3823 + while (child.lines.length > 50) {
1.3824 + var spilled = child.lines.splice(child.lines.length - 25, 25);
1.3825 + var newleaf = new LeafChunk(spilled);
1.3826 + child.height -= newleaf.height;
1.3827 + this.children.splice(i + 1, 0, newleaf);
1.3828 + newleaf.parent = this;
1.3829 + }
1.3830 + this.maybeSpill();
1.3831 + }
1.3832 + break;
1.3833 + }
1.3834 + at -= sz;
1.3835 + }
1.3836 + },
1.3837 + maybeSpill: function() {
1.3838 + if (this.children.length <= 10) return;
1.3839 + var me = this;
1.3840 + do {
1.3841 + var spilled = me.children.splice(me.children.length - 5, 5);
1.3842 + var sibling = new BranchChunk(spilled);
1.3843 + if (!me.parent) { // Become the parent node
1.3844 + var copy = new BranchChunk(me.children);
1.3845 + copy.parent = me;
1.3846 + me.children = [copy, sibling];
1.3847 + me = copy;
1.3848 + } else {
1.3849 + me.size -= sibling.size;
1.3850 + me.height -= sibling.height;
1.3851 + var myIndex = indexOf(me.parent.children, me);
1.3852 + me.parent.children.splice(myIndex + 1, 0, sibling);
1.3853 + }
1.3854 + sibling.parent = me.parent;
1.3855 + } while (me.children.length > 10);
1.3856 + me.parent.maybeSpill();
1.3857 + },
1.3858 + iter: function(from, to, op) { this.iterN(from, to - from, op); },
1.3859 + iterN: function(at, n, op) {
1.3860 + for (var i = 0, e = this.children.length; i < e; ++i) {
1.3861 + var child = this.children[i], sz = child.chunkSize();
1.3862 + if (at < sz) {
1.3863 + var used = Math.min(n, sz - at);
1.3864 + if (child.iterN(at, used, op)) return true;
1.3865 + if ((n -= used) == 0) break;
1.3866 + at = 0;
1.3867 + } else at -= sz;
1.3868 + }
1.3869 + }
1.3870 + };
1.3871 +
1.3872 + // LINE UTILITIES
1.3873 +
1.3874 + function getLine(chunk, n) {
1.3875 + while (!chunk.lines) {
1.3876 + for (var i = 0;; ++i) {
1.3877 + var child = chunk.children[i], sz = child.chunkSize();
1.3878 + if (n < sz) { chunk = child; break; }
1.3879 + n -= sz;
1.3880 + }
1.3881 + }
1.3882 + return chunk.lines[n];
1.3883 + }
1.3884 +
1.3885 + function updateLineHeight(line, height) {
1.3886 + var diff = height - line.height;
1.3887 + for (var n = line; n; n = n.parent) n.height += diff;
1.3888 + }
1.3889 +
1.3890 + function lineNo(line) {
1.3891 + if (line.parent == null) return null;
1.3892 + var cur = line.parent, no = indexOf(cur.lines, line);
1.3893 + for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
1.3894 + for (var i = 0;; ++i) {
1.3895 + if (chunk.children[i] == cur) break;
1.3896 + no += chunk.children[i].chunkSize();
1.3897 + }
1.3898 + }
1.3899 + return no;
1.3900 + }
1.3901 +
1.3902 + function lineAtHeight(chunk, h) {
1.3903 + var n = 0;
1.3904 + outer: do {
1.3905 + for (var i = 0, e = chunk.children.length; i < e; ++i) {
1.3906 + var child = chunk.children[i], ch = child.height;
1.3907 + if (h < ch) { chunk = child; continue outer; }
1.3908 + h -= ch;
1.3909 + n += child.chunkSize();
1.3910 + }
1.3911 + return n;
1.3912 + } while (!chunk.lines);
1.3913 + for (var i = 0, e = chunk.lines.length; i < e; ++i) {
1.3914 + var line = chunk.lines[i], lh = line.height;
1.3915 + if (h < lh) break;
1.3916 + h -= lh;
1.3917 + }
1.3918 + return n + i;
1.3919 + }
1.3920 +
1.3921 + function heightAtLine(cm, lineObj) {
1.3922 + lineObj = visualLine(cm.view.doc, lineObj);
1.3923 +
1.3924 + var h = 0, chunk = lineObj.parent;
1.3925 + for (var i = 0; i < chunk.lines.length; ++i) {
1.3926 + var line = chunk.lines[i];
1.3927 + if (line == lineObj) break;
1.3928 + else h += line.height;
1.3929 + }
1.3930 + for (var p = chunk.parent; p; chunk = p, p = chunk.parent) {
1.3931 + for (var i = 0; i < p.children.length; ++i) {
1.3932 + var cur = p.children[i];
1.3933 + if (cur == chunk) break;
1.3934 + else h += cur.height;
1.3935 + }
1.3936 + }
1.3937 + return h;
1.3938 + }
1.3939 +
1.3940 + function getOrder(line) {
1.3941 + var order = line.order;
1.3942 + if (order == null) order = line.order = bidiOrdering(line.text);
1.3943 + return order;
1.3944 + }
1.3945 +
1.3946 + // HISTORY
1.3947 +
1.3948 + function makeHistory() {
1.3949 + return {
1.3950 + // Arrays of history events. Doing something adds an event to
1.3951 + // done and clears undo. Undoing moves events from done to
1.3952 + // undone, redoing moves them in the other direction.
1.3953 + done: [], undone: [],
1.3954 + // Used to track when changes can be merged into a single undo
1.3955 + // event
1.3956 + lastTime: 0, lastOp: null, lastOrigin: null,
1.3957 + // Used by the isClean() method
1.3958 + dirtyCounter: 0
1.3959 + };
1.3960 + }
1.3961 +
1.3962 + function addChange(cm, start, added, old, origin, fromBefore, toBefore, fromAfter, toAfter) {
1.3963 + var history = cm.view.history;
1.3964 + history.undone.length = 0;
1.3965 + var time = +new Date, cur = lst(history.done);
1.3966 +
1.3967 + if (cur &&
1.3968 + (history.lastOp == cm.curOp.id ||
1.3969 + history.lastOrigin == origin && (origin == "input" || origin == "delete") &&
1.3970 + history.lastTime > time - 600)) {
1.3971 + // Merge this change into the last event
1.3972 + var last = lst(cur.events);
1.3973 + if (last.start > start + old.length || last.start + last.added < start) {
1.3974 + // Doesn't intersect with last sub-event, add new sub-event
1.3975 + cur.events.push({start: start, added: added, old: old});
1.3976 + } else {
1.3977 + // Patch up the last sub-event
1.3978 + var startBefore = Math.max(0, last.start - start),
1.3979 + endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
1.3980 + for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
1.3981 + for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
1.3982 + if (startBefore) last.start = start;
1.3983 + last.added += added - (old.length - startBefore - endAfter);
1.3984 + }
1.3985 + cur.fromAfter = fromAfter; cur.toAfter = toAfter;
1.3986 + } else {
1.3987 + // Can not be merged, start a new event.
1.3988 + cur = {events: [{start: start, added: added, old: old}],
1.3989 + fromBefore: fromBefore, toBefore: toBefore, fromAfter: fromAfter, toAfter: toAfter};
1.3990 + history.done.push(cur);
1.3991 + while (history.done.length > cm.options.undoDepth)
1.3992 + history.done.shift();
1.3993 + if (history.dirtyCounter < 0)
1.3994 + // The user has made a change after undoing past the last clean state.
1.3995 + // We can never get back to a clean state now until markClean() is called.
1.3996 + history.dirtyCounter = NaN;
1.3997 + else
1.3998 + history.dirtyCounter++;
1.3999 + }
1.4000 + history.lastTime = time;
1.4001 + history.lastOp = cm.curOp.id;
1.4002 + history.lastOrigin = origin;
1.4003 + }
1.4004 +
1.4005 + // EVENT OPERATORS
1.4006 +
1.4007 + function stopMethod() {e_stop(this);}
1.4008 + // Ensure an event has a stop method.
1.4009 + function addStop(event) {
1.4010 + if (!event.stop) event.stop = stopMethod;
1.4011 + return event;
1.4012 + }
1.4013 +
1.4014 + function e_preventDefault(e) {
1.4015 + if (e.preventDefault) e.preventDefault();
1.4016 + else e.returnValue = false;
1.4017 + }
1.4018 + function e_stopPropagation(e) {
1.4019 + if (e.stopPropagation) e.stopPropagation();
1.4020 + else e.cancelBubble = true;
1.4021 + }
1.4022 + function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
1.4023 + CodeMirror.e_stop = e_stop;
1.4024 + CodeMirror.e_preventDefault = e_preventDefault;
1.4025 + CodeMirror.e_stopPropagation = e_stopPropagation;
1.4026 +
1.4027 + function e_target(e) {return e.target || e.srcElement;}
1.4028 + function e_button(e) {
1.4029 + var b = e.which;
1.4030 + if (b == null) {
1.4031 + if (e.button & 1) b = 1;
1.4032 + else if (e.button & 2) b = 3;
1.4033 + else if (e.button & 4) b = 2;
1.4034 + }
1.4035 + if (mac && e.ctrlKey && b == 1) b = 3;
1.4036 + return b;
1.4037 + }
1.4038 +
1.4039 + // Allow 3rd-party code to override event properties by adding an override
1.4040 + // object to an event object.
1.4041 + function e_prop(e, prop) {
1.4042 + var overridden = e.override && e.override.hasOwnProperty(prop);
1.4043 + return overridden ? e.override[prop] : e[prop];
1.4044 + }
1.4045 +
1.4046 + // EVENT HANDLING
1.4047 +
1.4048 + function on(emitter, type, f) {
1.4049 + if (emitter.addEventListener)
1.4050 + emitter.addEventListener(type, f, false);
1.4051 + else if (emitter.attachEvent)
1.4052 + emitter.attachEvent("on" + type, f);
1.4053 + else {
1.4054 + var map = emitter._handlers || (emitter._handlers = {});
1.4055 + var arr = map[type] || (map[type] = []);
1.4056 + arr.push(f);
1.4057 + }
1.4058 + }
1.4059 +
1.4060 + function off(emitter, type, f) {
1.4061 + if (emitter.removeEventListener)
1.4062 + emitter.removeEventListener(type, f, false);
1.4063 + else if (emitter.detachEvent)
1.4064 + emitter.detachEvent("on" + type, f);
1.4065 + else {
1.4066 + var arr = emitter._handlers && emitter._handlers[type];
1.4067 + if (!arr) return;
1.4068 + for (var i = 0; i < arr.length; ++i)
1.4069 + if (arr[i] == f) { arr.splice(i, 1); break; }
1.4070 + }
1.4071 + }
1.4072 +
1.4073 + function signal(emitter, type /*, values...*/) {
1.4074 + var arr = emitter._handlers && emitter._handlers[type];
1.4075 + if (!arr) return;
1.4076 + var args = Array.prototype.slice.call(arguments, 2);
1.4077 + for (var i = 0; i < arr.length; ++i) arr[i].apply(null, args);
1.4078 + }
1.4079 +
1.4080 + function signalLater(cm, emitter, type /*, values...*/) {
1.4081 + var arr = emitter._handlers && emitter._handlers[type];
1.4082 + if (!arr) return;
1.4083 + var args = Array.prototype.slice.call(arguments, 3), flist = cm.curOp && cm.curOp.delayedCallbacks;
1.4084 + function bnd(f) {return function(){f.apply(null, args);};};
1.4085 + for (var i = 0; i < arr.length; ++i)
1.4086 + if (flist) flist.push(bnd(arr[i]));
1.4087 + else arr[i].apply(null, args);
1.4088 + }
1.4089 +
1.4090 + function hasHandler(emitter, type) {
1.4091 + var arr = emitter._handlers && emitter._handlers[type];
1.4092 + return arr && arr.length > 0;
1.4093 + }
1.4094 +
1.4095 + CodeMirror.on = on; CodeMirror.off = off; CodeMirror.signal = signal;
1.4096 +
1.4097 + // MISC UTILITIES
1.4098 +
1.4099 + // Number of pixels added to scroller and sizer to hide scrollbar
1.4100 + var scrollerCutOff = 30;
1.4101 +
1.4102 + // Returned or thrown by various protocols to signal 'I'm not
1.4103 + // handling this'.
1.4104 + var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
1.4105 +
1.4106 + function Delayed() {this.id = null;}
1.4107 + Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
1.4108 +
1.4109 + // Counts the column offset in a string, taking tabs into account.
1.4110 + // Used mostly to find indentation.
1.4111 + function countColumn(string, end, tabSize) {
1.4112 + if (end == null) {
1.4113 + end = string.search(/[^\s\u00a0]/);
1.4114 + if (end == -1) end = string.length;
1.4115 + }
1.4116 + for (var i = 0, n = 0; i < end; ++i) {
1.4117 + if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
1.4118 + else ++n;
1.4119 + }
1.4120 + return n;
1.4121 + }
1.4122 + CodeMirror.countColumn = countColumn;
1.4123 +
1.4124 + var spaceStrs = [""];
1.4125 + function spaceStr(n) {
1.4126 + while (spaceStrs.length <= n)
1.4127 + spaceStrs.push(lst(spaceStrs) + " ");
1.4128 + return spaceStrs[n];
1.4129 + }
1.4130 +
1.4131 + function lst(arr) { return arr[arr.length-1]; }
1.4132 +
1.4133 + function selectInput(node) {
1.4134 + if (ios) { // Mobile Safari apparently has a bug where select() is broken.
1.4135 + node.selectionStart = 0;
1.4136 + node.selectionEnd = node.value.length;
1.4137 + } else node.select();
1.4138 + }
1.4139 +
1.4140 + function indexOf(collection, elt) {
1.4141 + if (collection.indexOf) return collection.indexOf(elt);
1.4142 + for (var i = 0, e = collection.length; i < e; ++i)
1.4143 + if (collection[i] == elt) return i;
1.4144 + return -1;
1.4145 + }
1.4146 +
1.4147 + function emptyArray(size) {
1.4148 + for (var a = [], i = 0; i < size; ++i) a.push(undefined);
1.4149 + return a;
1.4150 + }
1.4151 +
1.4152 + function bind(f) {
1.4153 + var args = Array.prototype.slice.call(arguments, 1);
1.4154 + return function(){return f.apply(null, args);};
1.4155 + }
1.4156 +
1.4157 + var nonASCIISingleCaseWordChar = /[\u3040-\u309f\u30a0-\u30ff\u3400-\u4db5\u4e00-\u9fcc]/;
1.4158 + function isWordChar(ch) {
1.4159 + return /\w/.test(ch) || ch > "\x80" &&
1.4160 + (ch.toUpperCase() != ch.toLowerCase() || nonASCIISingleCaseWordChar.test(ch));
1.4161 + }
1.4162 +
1.4163 + function isEmpty(obj) {
1.4164 + var c = 0;
1.4165 + for (var n in obj) if (obj.hasOwnProperty(n) && obj[n]) ++c;
1.4166 + return !c;
1.4167 + }
1.4168 +
1.4169 + var isExtendingChar = /[\u0300-\u036F\u0483-\u0487\u0488-\u0489\u0591-\u05BD\u05BF\u05C1-\u05C2\u05C4-\u05C5\u05C7\u0610-\u061A\u064B-\u065F\u0670\u06D6-\u06DC\u06DF-\u06E4\u06E7-\u06E8\u06EA-\u06ED\uA66F\uA670-\uA672\uA674-\uA67D\uA69F]/;
1.4170 +
1.4171 + // DOM UTILITIES
1.4172 +
1.4173 + function elt(tag, content, className, style) {
1.4174 + var e = document.createElement(tag);
1.4175 + if (className) e.className = className;
1.4176 + if (style) e.style.cssText = style;
1.4177 + if (typeof content == "string") setTextContent(e, content);
1.4178 + else if (content) for (var i = 0; i < content.length; ++i) e.appendChild(content[i]);
1.4179 + return e;
1.4180 + }
1.4181 +
1.4182 + function removeChildren(e) {
1.4183 + e.innerHTML = "";
1.4184 + return e;
1.4185 + }
1.4186 +
1.4187 + function removeChildrenAndAdd(parent, e) {
1.4188 + return removeChildren(parent).appendChild(e);
1.4189 + }
1.4190 +
1.4191 + function setTextContent(e, str) {
1.4192 + if (ie_lt9) {
1.4193 + e.innerHTML = "";
1.4194 + e.appendChild(document.createTextNode(str));
1.4195 + } else e.textContent = str;
1.4196 + }
1.4197 +
1.4198 + // FEATURE DETECTION
1.4199 +
1.4200 + // Detect drag-and-drop
1.4201 + var dragAndDrop = function() {
1.4202 + // There is *some* kind of drag-and-drop support in IE6-8, but I
1.4203 + // couldn't get it to work yet.
1.4204 + if (ie_lt9) return false;
1.4205 + var div = elt('div');
1.4206 + return "draggable" in div || "dragDrop" in div;
1.4207 + }();
1.4208 +
1.4209 + // For a reason I have yet to figure out, some browsers disallow
1.4210 + // word wrapping between certain characters *only* if a new inline
1.4211 + // element is started between them. This makes it hard to reliably
1.4212 + // measure the position of things, since that requires inserting an
1.4213 + // extra span. This terribly fragile set of regexps matches the
1.4214 + // character combinations that suffer from this phenomenon on the
1.4215 + // various browsers.
1.4216 + var spanAffectsWrapping = /^$/; // Won't match any two-character string
1.4217 + if (gecko) spanAffectsWrapping = /$'/;
1.4218 + else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
1.4219 + else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
1.4220 +
1.4221 + var knownScrollbarWidth;
1.4222 + function scrollbarWidth(measure) {
1.4223 + if (knownScrollbarWidth != null) return knownScrollbarWidth;
1.4224 + var test = elt("div", null, null, "width: 50px; height: 50px; overflow-x: scroll");
1.4225 + removeChildrenAndAdd(measure, test);
1.4226 + if (test.offsetWidth)
1.4227 + knownScrollbarWidth = test.offsetHeight - test.clientHeight;
1.4228 + return knownScrollbarWidth || 0;
1.4229 + }
1.4230 +
1.4231 + var zwspSupported;
1.4232 + function zeroWidthElement(measure) {
1.4233 + if (zwspSupported == null) {
1.4234 + var test = elt("span", "\u200b");
1.4235 + removeChildrenAndAdd(measure, elt("span", [test, document.createTextNode("x")]));
1.4236 + if (measure.firstChild.offsetHeight != 0)
1.4237 + zwspSupported = test.offsetWidth <= 1 && test.offsetHeight > 2 && !ie_lt8;
1.4238 + }
1.4239 + if (zwspSupported) return elt("span", "\u200b");
1.4240 + else return elt("span", "\u00a0", null, "display: inline-block; width: 1px; margin-right: -1px");
1.4241 + }
1.4242 +
1.4243 + // See if "".split is the broken IE version, if so, provide an
1.4244 + // alternative way to split lines.
1.4245 + var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
1.4246 + var pos = 0, result = [], l = string.length;
1.4247 + while (pos <= l) {
1.4248 + var nl = string.indexOf("\n", pos);
1.4249 + if (nl == -1) nl = string.length;
1.4250 + var line = string.slice(pos, string.charAt(nl - 1) == "\r" ? nl - 1 : nl);
1.4251 + var rt = line.indexOf("\r");
1.4252 + if (rt != -1) {
1.4253 + result.push(line.slice(0, rt));
1.4254 + pos += rt + 1;
1.4255 + } else {
1.4256 + result.push(line);
1.4257 + pos = nl + 1;
1.4258 + }
1.4259 + }
1.4260 + return result;
1.4261 + } : function(string){return string.split(/\r\n?|\n/);};
1.4262 + CodeMirror.splitLines = splitLines;
1.4263 +
1.4264 + var hasSelection = window.getSelection ? function(te) {
1.4265 + try { return te.selectionStart != te.selectionEnd; }
1.4266 + catch(e) { return false; }
1.4267 + } : function(te) {
1.4268 + try {var range = te.ownerDocument.selection.createRange();}
1.4269 + catch(e) {}
1.4270 + if (!range || range.parentElement() != te) return false;
1.4271 + return range.compareEndPoints("StartToEnd", range) != 0;
1.4272 + };
1.4273 +
1.4274 + var hasCopyEvent = (function() {
1.4275 + var e = elt("div");
1.4276 + if ("oncopy" in e) return true;
1.4277 + e.setAttribute("oncopy", "return;");
1.4278 + return typeof e.oncopy == 'function';
1.4279 + })();
1.4280 +
1.4281 + // KEY NAMING
1.4282 +
1.4283 + var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
1.4284 + 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
1.4285 + 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
1.4286 + 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 109: "-", 107: "=", 127: "Delete",
1.4287 + 186: ";", 187: "=", 188: ",", 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\",
1.4288 + 221: "]", 222: "'", 63276: "PageUp", 63277: "PageDown", 63275: "End", 63273: "Home",
1.4289 + 63234: "Left", 63232: "Up", 63235: "Right", 63233: "Down", 63302: "Insert", 63272: "Delete"};
1.4290 + CodeMirror.keyNames = keyNames;
1.4291 + (function() {
1.4292 + // Number keys
1.4293 + for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
1.4294 + // Alphabetic keys
1.4295 + for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
1.4296 + // Function keys
1.4297 + for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
1.4298 + })();
1.4299 +
1.4300 + // BIDI HELPERS
1.4301 +
1.4302 + function iterateBidiSections(order, from, to, f) {
1.4303 + if (!order) return f(from, to, "ltr");
1.4304 + for (var i = 0; i < order.length; ++i) {
1.4305 + var part = order[i];
1.4306 + if (part.from < to && part.to > from)
1.4307 + f(Math.max(part.from, from), Math.min(part.to, to), part.level == 1 ? "rtl" : "ltr");
1.4308 + }
1.4309 + }
1.4310 +
1.4311 + function bidiLeft(part) { return part.level % 2 ? part.to : part.from; }
1.4312 + function bidiRight(part) { return part.level % 2 ? part.from : part.to; }
1.4313 +
1.4314 + function lineLeft(line) { var order = getOrder(line); return order ? bidiLeft(order[0]) : 0; }
1.4315 + function lineRight(line) {
1.4316 + var order = getOrder(line);
1.4317 + if (!order) return line.text.length;
1.4318 + return bidiRight(lst(order));
1.4319 + }
1.4320 +
1.4321 + function lineStart(cm, lineN) {
1.4322 + var line = getLine(cm.view.doc, lineN);
1.4323 + var visual = visualLine(cm.view.doc, line);
1.4324 + if (visual != line) lineN = lineNo(visual);
1.4325 + var order = getOrder(visual);
1.4326 + var ch = !order ? 0 : order[0].level % 2 ? lineRight(visual) : lineLeft(visual);
1.4327 + return {line: lineN, ch: ch};
1.4328 + }
1.4329 + function lineEnd(cm, lineNo) {
1.4330 + var merged, line;
1.4331 + while (merged = collapsedSpanAtEnd(line = getLine(cm.view.doc, lineNo)))
1.4332 + lineNo = merged.find().to.line;
1.4333 + var order = getOrder(line);
1.4334 + var ch = !order ? line.text.length : order[0].level % 2 ? lineLeft(line) : lineRight(line);
1.4335 + return {line: lineNo, ch: ch};
1.4336 + }
1.4337 +
1.4338 + // This is somewhat involved. It is needed in order to move
1.4339 + // 'visually' through bi-directional text -- i.e., pressing left
1.4340 + // should make the cursor go left, even when in RTL text. The
1.4341 + // tricky part is the 'jumps', where RTL and LTR text touch each
1.4342 + // other. This often requires the cursor offset to move more than
1.4343 + // one unit, in order to visually move one unit.
1.4344 + function moveVisually(line, start, dir, byUnit) {
1.4345 + var bidi = getOrder(line);
1.4346 + if (!bidi) return moveLogically(line, start, dir, byUnit);
1.4347 + var moveOneUnit = byUnit ? function(pos, dir) {
1.4348 + do pos += dir;
1.4349 + while (pos > 0 && isExtendingChar.test(line.text.charAt(pos)));
1.4350 + return pos;
1.4351 + } : function(pos, dir) { return pos + dir; };
1.4352 + var linedir = bidi[0].level;
1.4353 + for (var i = 0; i < bidi.length; ++i) {
1.4354 + var part = bidi[i], sticky = part.level % 2 == linedir;
1.4355 + if ((part.from < start && part.to > start) ||
1.4356 + (sticky && (part.from == start || part.to == start))) break;
1.4357 + }
1.4358 + var target = moveOneUnit(start, part.level % 2 ? -dir : dir);
1.4359 +
1.4360 + while (target != null) {
1.4361 + if (part.level % 2 == linedir) {
1.4362 + if (target < part.from || target > part.to) {
1.4363 + part = bidi[i += dir];
1.4364 + target = part && (dir > 0 == part.level % 2 ? moveOneUnit(part.to, -1) : moveOneUnit(part.from, 1));
1.4365 + } else break;
1.4366 + } else {
1.4367 + if (target == bidiLeft(part)) {
1.4368 + part = bidi[--i];
1.4369 + target = part && bidiRight(part);
1.4370 + } else if (target == bidiRight(part)) {
1.4371 + part = bidi[++i];
1.4372 + target = part && bidiLeft(part);
1.4373 + } else break;
1.4374 + }
1.4375 + }
1.4376 +
1.4377 + return target < 0 || target > line.text.length ? null : target;
1.4378 + }
1.4379 +
1.4380 + function moveLogically(line, start, dir, byUnit) {
1.4381 + var target = start + dir;
1.4382 + if (byUnit) while (target > 0 && isExtendingChar.test(line.text.charAt(target))) target += dir;
1.4383 + return target < 0 || target > line.text.length ? null : target;
1.4384 + }
1.4385 +
1.4386 + // Bidirectional ordering algorithm
1.4387 + // See http://unicode.org/reports/tr9/tr9-13.html for the algorithm
1.4388 + // that this (partially) implements.
1.4389 +
1.4390 + // One-char codes used for character types:
1.4391 + // L (L): Left-to-Right
1.4392 + // R (R): Right-to-Left
1.4393 + // r (AL): Right-to-Left Arabic
1.4394 + // 1 (EN): European Number
1.4395 + // + (ES): European Number Separator
1.4396 + // % (ET): European Number Terminator
1.4397 + // n (AN): Arabic Number
1.4398 + // , (CS): Common Number Separator
1.4399 + // m (NSM): Non-Spacing Mark
1.4400 + // b (BN): Boundary Neutral
1.4401 + // s (B): Paragraph Separator
1.4402 + // t (S): Segment Separator
1.4403 + // w (WS): Whitespace
1.4404 + // N (ON): Other Neutrals
1.4405 +
1.4406 + // Returns null if characters are ordered as they appear
1.4407 + // (left-to-right), or an array of sections ({from, to, level}
1.4408 + // objects) in the order in which they occur visually.
1.4409 + var bidiOrdering = (function() {
1.4410 + // Character types for codepoints 0 to 0xff
1.4411 + var lowTypes = "bbbbbbbbbtstwsbbbbbbbbbbbbbbssstwNN%%%NNNNNN,N,N1111111111NNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNNNLLLLLLLLLLLLLLLLLLLLLLLLLLNNNNbbbbbbsbbbbbbbbbbbbbbbbbbbbbbbbbb,N%%%%NNNNLNNNNN%%11NLNNN1LNNNNNLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLNLLLLLLLL";
1.4412 + // Character types for codepoints 0x600 to 0x6ff
1.4413 + var arabicTypes = "rrrrrrrrrrrr,rNNmmmmmmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmrrrrrrrnnnnnnnnnn%nnrrrmrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrmmmmmmmmmmmmmmmmmmmNmmmmrrrrrrrrrrrrrrrrrr";
1.4414 + function charType(code) {
1.4415 + if (code <= 0xff) return lowTypes.charAt(code);
1.4416 + else if (0x590 <= code && code <= 0x5f4) return "R";
1.4417 + else if (0x600 <= code && code <= 0x6ff) return arabicTypes.charAt(code - 0x600);
1.4418 + else if (0x700 <= code && code <= 0x8ac) return "r";
1.4419 + else return "L";
1.4420 + }
1.4421 +
1.4422 + var bidiRE = /[\u0590-\u05f4\u0600-\u06ff\u0700-\u08ac]/;
1.4423 + var isNeutral = /[stwN]/, isStrong = /[LRr]/, countsAsLeft = /[Lb1n]/, countsAsNum = /[1n]/;
1.4424 +
1.4425 + return function charOrdering(str) {
1.4426 + if (!bidiRE.test(str)) return false;
1.4427 + var len = str.length, types = [], startType = null;
1.4428 + for (var i = 0, type; i < len; ++i) {
1.4429 + types.push(type = charType(str.charCodeAt(i)));
1.4430 + if (startType == null) {
1.4431 + if (type == "L") startType = "L";
1.4432 + else if (type == "R" || type == "r") startType = "R";
1.4433 + }
1.4434 + }
1.4435 + if (startType == null) startType = "L";
1.4436 +
1.4437 + // W1. Examine each non-spacing mark (NSM) in the level run, and
1.4438 + // change the type of the NSM to the type of the previous
1.4439 + // character. If the NSM is at the start of the level run, it will
1.4440 + // get the type of sor.
1.4441 + for (var i = 0, prev = startType; i < len; ++i) {
1.4442 + var type = types[i];
1.4443 + if (type == "m") types[i] = prev;
1.4444 + else prev = type;
1.4445 + }
1.4446 +
1.4447 + // W2. Search backwards from each instance of a European number
1.4448 + // until the first strong type (R, L, AL, or sor) is found. If an
1.4449 + // AL is found, change the type of the European number to Arabic
1.4450 + // number.
1.4451 + // W3. Change all ALs to R.
1.4452 + for (var i = 0, cur = startType; i < len; ++i) {
1.4453 + var type = types[i];
1.4454 + if (type == "1" && cur == "r") types[i] = "n";
1.4455 + else if (isStrong.test(type)) { cur = type; if (type == "r") types[i] = "R"; }
1.4456 + }
1.4457 +
1.4458 + // W4. A single European separator between two European numbers
1.4459 + // changes to a European number. A single common separator between
1.4460 + // two numbers of the same type changes to that type.
1.4461 + for (var i = 1, prev = types[0]; i < len - 1; ++i) {
1.4462 + var type = types[i];
1.4463 + if (type == "+" && prev == "1" && types[i+1] == "1") types[i] = "1";
1.4464 + else if (type == "," && prev == types[i+1] &&
1.4465 + (prev == "1" || prev == "n")) types[i] = prev;
1.4466 + prev = type;
1.4467 + }
1.4468 +
1.4469 + // W5. A sequence of European terminators adjacent to European
1.4470 + // numbers changes to all European numbers.
1.4471 + // W6. Otherwise, separators and terminators change to Other
1.4472 + // Neutral.
1.4473 + for (var i = 0; i < len; ++i) {
1.4474 + var type = types[i];
1.4475 + if (type == ",") types[i] = "N";
1.4476 + else if (type == "%") {
1.4477 + for (var end = i + 1; end < len && types[end] == "%"; ++end) {}
1.4478 + var replace = (i && types[i-1] == "!") || (end < len - 1 && types[end] == "1") ? "1" : "N";
1.4479 + for (var j = i; j < end; ++j) types[j] = replace;
1.4480 + i = end - 1;
1.4481 + }
1.4482 + }
1.4483 +
1.4484 + // W7. Search backwards from each instance of a European number
1.4485 + // until the first strong type (R, L, or sor) is found. If an L is
1.4486 + // found, then change the type of the European number to L.
1.4487 + for (var i = 0, cur = startType; i < len; ++i) {
1.4488 + var type = types[i];
1.4489 + if (cur == "L" && type == "1") types[i] = "L";
1.4490 + else if (isStrong.test(type)) cur = type;
1.4491 + }
1.4492 +
1.4493 + // N1. A sequence of neutrals takes the direction of the
1.4494 + // surrounding strong text if the text on both sides has the same
1.4495 + // direction. European and Arabic numbers act as if they were R in
1.4496 + // terms of their influence on neutrals. Start-of-level-run (sor)
1.4497 + // and end-of-level-run (eor) are used at level run boundaries.
1.4498 + // N2. Any remaining neutrals take the embedding direction.
1.4499 + for (var i = 0; i < len; ++i) {
1.4500 + if (isNeutral.test(types[i])) {
1.4501 + for (var end = i + 1; end < len && isNeutral.test(types[end]); ++end) {}
1.4502 + var before = (i ? types[i-1] : startType) == "L";
1.4503 + var after = (end < len - 1 ? types[end] : startType) == "L";
1.4504 + var replace = before || after ? "L" : "R";
1.4505 + for (var j = i; j < end; ++j) types[j] = replace;
1.4506 + i = end - 1;
1.4507 + }
1.4508 + }
1.4509 +
1.4510 + // Here we depart from the documented algorithm, in order to avoid
1.4511 + // building up an actual levels array. Since there are only three
1.4512 + // levels (0, 1, 2) in an implementation that doesn't take
1.4513 + // explicit embedding into account, we can build up the order on
1.4514 + // the fly, without following the level-based algorithm.
1.4515 + var order = [], m;
1.4516 + for (var i = 0; i < len;) {
1.4517 + if (countsAsLeft.test(types[i])) {
1.4518 + var start = i;
1.4519 + for (++i; i < len && countsAsLeft.test(types[i]); ++i) {}
1.4520 + order.push({from: start, to: i, level: 0});
1.4521 + } else {
1.4522 + var pos = i, at = order.length;
1.4523 + for (++i; i < len && types[i] != "L"; ++i) {}
1.4524 + for (var j = pos; j < i;) {
1.4525 + if (countsAsNum.test(types[j])) {
1.4526 + if (pos < j) order.splice(at, 0, {from: pos, to: j, level: 1});
1.4527 + var nstart = j;
1.4528 + for (++j; j < i && countsAsNum.test(types[j]); ++j) {}
1.4529 + order.splice(at, 0, {from: nstart, to: j, level: 2});
1.4530 + pos = j;
1.4531 + } else ++j;
1.4532 + }
1.4533 + if (pos < i) order.splice(at, 0, {from: pos, to: i, level: 1});
1.4534 + }
1.4535 + }
1.4536 + if (order[0].level == 1 && (m = str.match(/^\s+/))) {
1.4537 + order[0].from = m[0].length;
1.4538 + order.unshift({from: 0, to: m[0].length, level: 0});
1.4539 + }
1.4540 + if (lst(order).level == 1 && (m = str.match(/\s+$/))) {
1.4541 + lst(order).to -= m[0].length;
1.4542 + order.push({from: len - m[0].length, to: len, level: 0});
1.4543 + }
1.4544 + if (order[0].level != lst(order).level)
1.4545 + order.push({from: len, to: len, level: order[0].level});
1.4546 +
1.4547 + return order;
1.4548 + };
1.4549 + })();
1.4550 +
1.4551 + // THE END
1.4552 +
1.4553 + CodeMirror.version = "3.0";
1.4554 +
1.4555 + return CodeMirror;
1.4556 +})();