'
- + line.getHTML(makeTab) + '';
- // Kludge to make sure the styled element lies behind the selection (by z-index)
- if (line.bgClassName)
- html = '";
- }
- scratch.innerHTML = html;
- lineDiv.insertBefore(scratch.firstChild, curNode);
- } else {
- curNode = curNode.nextSibling;
- }
- ++j;
- });
- }
-
- function updateGutter() {
- if (!options.gutter && !options.lineNumbers) return;
- var hText = mover.offsetHeight, hEditor = scroller.clientHeight;
- gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px";
- var html = [], i = showingFrom, normalNode;
- doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
- if (line.hidden) {
- html.push("");
- } else {
- var marker = line.gutterMarker;
- var text = options.lineNumbers ? i + options.firstLineNumber : null;
- if (marker && marker.text)
- text = marker.text.replace("%N%", text != null ? text : "");
- else if (text == null)
- text = "\u00a0";
- html.push((marker && marker.style ? '' : ""), text);
- for (var j = 1; j < line.height; ++j) html.push("
");
- html.push("");
- if (!marker) normalNode = i;
- }
- ++i;
- });
- gutter.style.display = "none";
- gutterText.innerHTML = html.join("");
- // Make sure scrolling doesn't cause number gutter size to pop
- if (normalNode != null) {
- var node = gutterText.childNodes[normalNode - showingFrom];
- var minwidth = String(doc.size).length, val = eltText(node), pad = "";
- while (val.length + pad.length < minwidth) pad += "\u00a0";
- if (pad) node.insertBefore(document.createTextNode(pad), node.firstChild);
- }
- gutter.style.display = "";
- var resized = Math.abs((parseInt(lineSpace.style.marginLeft) || 0) - gutter.offsetWidth) > 2;
- lineSpace.style.marginLeft = gutter.offsetWidth + "px";
- gutterDirty = false;
- return resized;
- }
- function updateSelection() {
- var collapsed = posEq(sel.from, sel.to);
- var fromPos = localCoords(sel.from, true);
- var toPos = collapsed ? fromPos : localCoords(sel.to, true);
- var headPos = sel.inverted ? fromPos : toPos, th = textHeight();
- var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv);
- inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px";
- inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px";
- if (collapsed) {
- cursor.style.top = headPos.y + "px";
- cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px";
- cursor.style.display = "";
- selectionDiv.style.display = "none";
- } else {
- var sameLine = fromPos.y == toPos.y, html = "";
- var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth;
- var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight;
- function add(left, top, right, height) {
- var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px"
- : "right: " + right + "px";
- html += '';
- }
- if (sel.from.ch && fromPos.y >= 0) {
- var right = sameLine ? clientWidth - toPos.x : 0;
- add(fromPos.x, fromPos.y, right, th);
- }
- var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0));
- var middleHeight = Math.min(toPos.y, clientHeight) - middleStart;
- if (middleHeight > 0.2 * th)
- add(0, middleStart, 0, middleHeight);
- if ((!sameLine || !sel.from.ch) && toPos.y < clientHeight - .5 * th)
- add(0, toPos.y, clientWidth - toPos.x, th);
- selectionDiv.innerHTML = html;
- cursor.style.display = "none";
- selectionDiv.style.display = "";
- }
- }
-
- function setShift(val) {
- if (val) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from);
- else shiftSelecting = null;
- }
- function setSelectionUser(from, to) {
- var sh = shiftSelecting && clipPos(shiftSelecting);
- if (sh) {
- if (posLess(sh, from)) from = sh;
- else if (posLess(to, sh)) to = sh;
- }
- setSelection(from, to);
- userSelChange = true;
- }
- // Update the selection. Last two args are only used by
- // updateLines, since they have to be expressed in the line
- // numbers before the update.
- function setSelection(from, to, oldFrom, oldTo) {
- goalColumn = null;
- if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;}
- if (posEq(sel.from, from) && posEq(sel.to, to)) return;
- if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
-
- // Skip over hidden lines.
- if (from.line != oldFrom) {
- var from1 = skipHidden(from, oldFrom, sel.from.ch);
- // If there is no non-hidden line left, force visibility on current line
- if (!from1) setLineHidden(from.line, false);
- else from = from1;
- }
- if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch);
-
- if (posEq(from, to)) sel.inverted = false;
- else if (posEq(from, sel.to)) sel.inverted = false;
- else if (posEq(to, sel.from)) sel.inverted = true;
-
- if (options.autoClearEmptyLines && posEq(sel.from, sel.to)) {
- var head = sel.inverted ? from : to;
- if (head.line != sel.from.line && sel.from.line < doc.size) {
- var oldLine = getLine(sel.from.line);
- if (/^\s+$/.test(oldLine.text))
- setTimeout(operation(function() {
- if (oldLine.parent && /^\s+$/.test(oldLine.text)) {
- var no = lineNo(oldLine);
- replaceRange("", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});
- }
- }, 10));
- }
- }
-
- sel.from = from; sel.to = to;
- selectionChanged = true;
- }
- function skipHidden(pos, oldLine, oldCh) {
- function getNonHidden(dir) {
- var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;
- while (lNo != end) {
- var line = getLine(lNo);
- if (!line.hidden) {
- var ch = pos.ch;
- if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length;
- return {line: lNo, ch: ch};
- }
- lNo += dir;
- }
- }
- var line = getLine(pos.line);
- var toEnd = pos.ch == line.text.length && pos.ch != oldCh;
- if (!line.hidden) return pos;
- if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);
- else return getNonHidden(-1) || getNonHidden(1);
- }
- function setCursor(line, ch, user) {
- var pos = clipPos({line: line, ch: ch || 0});
- (user ? setSelectionUser : setSelection)(pos, pos);
- }
-
- function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));}
- function clipPos(pos) {
- if (pos.line < 0) return {line: 0, ch: 0};
- if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length};
- var ch = pos.ch, linelen = getLine(pos.line).text.length;
- if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
- else if (ch < 0) return {line: pos.line, ch: 0};
- else return pos;
- }
-
- function findPosH(dir, unit) {
- var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch;
- var lineObj = getLine(line);
- function findNextLine() {
- for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {
- var lo = getLine(l);
- if (!lo.hidden) { line = l; lineObj = lo; return true; }
- }
- }
- function moveOnce(boundToLine) {
- if (ch == (dir < 0 ? 0 : lineObj.text.length)) {
- if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0;
- else return false;
- } else ch += dir;
- return true;
- }
- if (unit == "char") moveOnce();
- else if (unit == "column") moveOnce(true);
- else if (unit == "word") {
- var sawWord = false;
- for (;;) {
- if (dir < 0) if (!moveOnce()) break;
- if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
- else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
- if (dir > 0) if (!moveOnce()) break;
- }
- }
- return {line: line, ch: ch};
- }
- function moveH(dir, unit) {
- var pos = dir < 0 ? sel.from : sel.to;
- if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit);
- setCursor(pos.line, pos.ch, true);
- }
- function deleteH(dir, unit) {
- if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to);
- else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to);
- else replaceRange("", sel.from, findPosH(dir, unit));
- userSelChange = true;
- }
- var goalColumn = null;
- function moveV(dir, unit) {
- var dist = 0, pos = localCoords(sel.inverted ? sel.from : sel.to, true);
- if (goalColumn != null) pos.x = goalColumn;
- if (unit == "page") dist = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
- else if (unit == "line") dist = textHeight();
- var target = coordsChar(pos.x, pos.y + dist * dir + 2);
- if (unit == "page") scroller.scrollTop += localCoords(target, true).y - pos.y;
- setCursor(target.line, target.ch, true);
- goalColumn = pos.x;
- }
-
- function selectWordAt(pos) {
- var line = getLine(pos.line).text;
- var start = pos.ch, end = pos.ch;
- while (start > 0 && isWordChar(line.charAt(start - 1))) --start;
- while (end < line.length && isWordChar(line.charAt(end))) ++end;
- setSelectionUser({line: pos.line, ch: start}, {line: pos.line, ch: end});
- }
- function selectLine(line) {
- setSelectionUser({line: line, ch: 0}, clipPos({line: line + 1, ch: 0}));
- }
- function indentSelected(mode) {
- if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode);
- var e = sel.to.line - (sel.to.ch ? 0 : 1);
- for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode);
- }
-
- function indentLine(n, how) {
- if (!how) how = "add";
- if (how == "smart") {
- if (!mode.indent) how = "prev";
- else var state = getStateBefore(n);
- }
-
- var line = getLine(n), curSpace = line.indentation(options.tabSize),
- curSpaceString = line.text.match(/^\s*/)[0], indentation;
- if (how == "prev") {
- if (n) indentation = getLine(n-1).indentation(options.tabSize);
- else indentation = 0;
- }
- else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
- else if (how == "add") indentation = curSpace + options.indentUnit;
- else if (how == "subtract") indentation = curSpace - options.indentUnit;
- indentation = Math.max(0, indentation);
- var diff = indentation - curSpace;
-
- if (!diff) {
- if (sel.from.line != n && sel.to.line != n) return;
- var indentString = curSpaceString;
- }
- else {
- var indentString = "", pos = 0;
- if (options.indentWithTabs)
- for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
- while (pos < indentation) {++pos; indentString += " ";}
- }
-
- replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
- }
-
- function loadMode() {
- mode = CodeMirror.getMode(options, options.mode);
- doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
- work = [0];
- startWorker();
- }
- function gutterChanged() {
- var visible = options.gutter || options.lineNumbers;
- gutter.style.display = visible ? "" : "none";
- if (visible) gutterDirty = true;
- else lineDiv.parentNode.style.marginLeft = 0;
- }
- function wrappingChanged(from, to) {
- if (options.lineWrapping) {
- wrapper.className += " CodeMirror-wrap";
- var perLine = scroller.clientWidth / charWidth() - 3;
- doc.iter(0, doc.size, function(line) {
- if (line.hidden) return;
- var guess = Math.ceil(line.text.length / perLine) || 1;
- if (guess != 1) updateLineHeight(line, guess);
- });
- lineSpace.style.width = code.style.width = "";
- } else {
- wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
- maxWidth = null; maxLine = "";
- doc.iter(0, doc.size, function(line) {
- if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
- if (line.text.length > maxLine.length) maxLine = line.text;
- });
- }
- changes.push({from: 0, to: doc.size});
- }
- function makeTab(col) {
- var w = options.tabSize - col % options.tabSize, cached = tabCache[w];
- if (cached) return cached;
- for (var str = '', i = 0; i < w; ++i) str += " ";
- return (tabCache[w] = {html: str + "", width: w});
- }
- function themeChanged() {
- scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") +
- options.theme.replace(/(^|\s)\s*/g, " cm-s-");
- }
-
- function TextMarker() { this.set = []; }
- TextMarker.prototype.clear = operation(function() {
- var min = Infinity, max = -Infinity;
- for (var i = 0, e = this.set.length; i < e; ++i) {
- var line = this.set[i], mk = line.marked;
- if (!mk || !line.parent) continue;
- var lineN = lineNo(line);
- min = Math.min(min, lineN); max = Math.max(max, lineN);
- for (var j = 0; j < mk.length; ++j)
- if (mk[j].marker == this) mk.splice(j--, 1);
- }
- if (min != Infinity)
- changes.push({from: min, to: max + 1});
- });
- TextMarker.prototype.find = function() {
- var from, to;
- for (var i = 0, e = this.set.length; i < e; ++i) {
- var line = this.set[i], mk = line.marked;
- for (var j = 0; j < mk.length; ++j) {
- var mark = mk[j];
- if (mark.marker == this) {
- if (mark.from != null || mark.to != null) {
- var found = lineNo(line);
- if (found != null) {
- if (mark.from != null) from = {line: found, ch: mark.from};
- if (mark.to != null) to = {line: found, ch: mark.to};
- }
- }
- }
- }
- }
- return {from: from, to: to};
- };
-
- function markText(from, to, className) {
- from = clipPos(from); to = clipPos(to);
- var tm = new TextMarker();
- if (!posLess(from, to)) return tm;
- function add(line, from, to, className) {
- getLine(line).addMark(new MarkedText(from, to, className, tm));
- }
- if (from.line == to.line) add(from.line, from.ch, to.ch, className);
- else {
- add(from.line, from.ch, null, className);
- for (var i = from.line + 1, e = to.line; i < e; ++i)
- add(i, null, null, className);
- add(to.line, null, to.ch, className);
- }
- changes.push({from: from.line, to: to.line + 1});
- return tm;
- }
-
- function setBookmark(pos) {
- pos = clipPos(pos);
- var bm = new Bookmark(pos.ch);
- getLine(pos.line).addMark(bm);
- return bm;
- }
-
- function findMarksAt(pos) {
- pos = clipPos(pos);
- var markers = [], marked = getLine(pos.line).marked;
- if (!marked) return markers;
- for (var i = 0, e = marked.length; i < e; ++i) {
- var m = marked[i];
- if ((m.from == null || m.from <= pos.ch) &&
- (m.to == null || m.to >= pos.ch))
- markers.push(m.marker || m);
- }
- return markers;
- }
-
- function addGutterMarker(line, text, className) {
- if (typeof line == "number") line = getLine(clipLine(line));
- line.gutterMarker = {text: text, style: className};
- gutterDirty = true;
- return line;
- }
- function removeGutterMarker(line) {
- if (typeof line == "number") line = getLine(clipLine(line));
- line.gutterMarker = null;
- gutterDirty = true;
- }
-
- function changeLine(handle, op) {
- var no = handle, line = handle;
- if (typeof handle == "number") line = getLine(clipLine(handle));
- else no = lineNo(handle);
- if (no == null) return null;
- if (op(line, no)) changes.push({from: no, to: no + 1});
- else return null;
- return line;
- }
- function setLineClass(handle, className, bgClassName) {
- return changeLine(handle, function(line) {
- if (line.className != className || line.bgClassName != bgClassName) {
- line.className = className;
- line.bgClassName = bgClassName;
- return true;
- }
- });
- }
- function setLineHidden(handle, hidden) {
- return changeLine(handle, function(line, no) {
- if (line.hidden != hidden) {
- line.hidden = hidden;
- updateLineHeight(line, hidden ? 0 : 1);
- var fline = sel.from.line, tline = sel.to.line;
- if (hidden && (fline == no || tline == no)) {
- var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from;
- var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to;
- // Can't hide the last visible line, we'd have no place to put the cursor
- if (!to) return;
- setSelection(from, to);
- }
- return (gutterDirty = true);
- }
- });
- }
-
- function lineInfo(line) {
- if (typeof line == "number") {
- if (!isLine(line)) return null;
- var n = line;
- line = getLine(line);
- if (!line) return null;
- }
- else {
- var n = lineNo(line);
- if (n == null) return null;
- }
- var marker = line.gutterMarker;
- return {line: n, handle: line, text: line.text, markerText: marker && marker.text,
- markerClass: marker && marker.style, lineClass: line.className, bgClass: line.bgClassName};
- }
-
- function stringWidth(str) {
- measure.innerHTML = "x
";
- measure.firstChild.firstChild.firstChild.nodeValue = str;
- return measure.firstChild.firstChild.offsetWidth || 10;
- }
- // These are used to go from pixel positions to character
- // positions, taking varying character widths into account.
- function charFromX(line, x) {
- if (x <= 0) return 0;
- var lineObj = getLine(line), text = lineObj.text;
- function getX(len) {
- return measureLine(lineObj, len).left;
- }
- var from = 0, fromX = 0, to = text.length, toX;
- // Guess a suitable upper bound for our search.
- var estimated = Math.min(to, Math.ceil(x / charWidth()));
- for (;;) {
- var estX = getX(estimated);
- if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
- else {toX = estX; to = estimated; break;}
- }
- if (x > toX) return to;
- // Try to guess a suitable lower bound as well.
- estimated = Math.floor(to * 0.8); estX = getX(estimated);
- if (estX < x) {from = estimated; fromX = estX;}
- // Do a binary search between these bounds.
- for (;;) {
- if (to - from <= 1) return (toX - x > x - fromX) ? from : to;
- var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
- if (middleX > x) {to = middle; toX = middleX;}
- else {from = middle; fromX = middleX;}
- }
- }
-
- var tempId = "CodeMirror-temp-" + Math.floor(Math.random() * 0xffffff).toString(16);
- function measureLine(line, ch) {
- if (ch == 0) return {top: 0, left: 0};
- var wbr = options.lineWrapping && ch < line.text.length &&
- spanAffectsWrapping.test(line.text.slice(ch - 1, ch + 1));
- measure.innerHTML = "" + line.getHTML(makeTab, ch, tempId, wbr) + "
";
- var elt = document.getElementById(tempId);
- var top = elt.offsetTop, left = elt.offsetLeft;
- // Older IEs report zero offsets for spans directly after a wrap
- if (ie && top == 0 && left == 0) {
- var backup = document.createElement("span");
- backup.innerHTML = "x";
- elt.parentNode.insertBefore(backup, elt.nextSibling);
- top = backup.offsetTop;
- }
- return {top: top, left: left};
- }
- function localCoords(pos, inLineWrap) {
- var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0));
- if (pos.ch == 0) x = 0;
- else {
- var sp = measureLine(getLine(pos.line), pos.ch);
- x = sp.left;
- if (options.lineWrapping) y += Math.max(0, sp.top);
- }
- return {x: x, y: y, yBot: y + lh};
- }
- // Coords must be lineSpace-local
- function coordsChar(x, y) {
- if (y < 0) y = 0;
- var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
- var lineNo = lineAtHeight(doc, heightPos);
- if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc.size - 1).text.length};
- var lineObj = getLine(lineNo), text = lineObj.text;
- var tw = options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0;
- if (x <= 0 && innerOff == 0) return {line: lineNo, ch: 0};
- function getX(len) {
- var sp = measureLine(lineObj, len);
- if (tw) {
- var off = Math.round(sp.top / th);
- return Math.max(0, sp.left + (off - innerOff) * scroller.clientWidth);
- }
- return sp.left;
- }
- var from = 0, fromX = 0, to = text.length, toX;
- // Guess a suitable upper bound for our search.
- var estimated = Math.min(to, Math.ceil((x + innerOff * scroller.clientWidth * .9) / cw));
- for (;;) {
- var estX = getX(estimated);
- if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
- else {toX = estX; to = estimated; break;}
- }
- if (x > toX) return {line: lineNo, ch: to};
- // Try to guess a suitable lower bound as well.
- estimated = Math.floor(to * 0.8); estX = getX(estimated);
- if (estX < x) {from = estimated; fromX = estX;}
- // Do a binary search between these bounds.
- for (;;) {
- if (to - from <= 1) return {line: lineNo, ch: (toX - x > x - fromX) ? from : to};
- var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
- if (middleX > x) {to = middle; toX = middleX;}
- else {from = middle; fromX = middleX;}
- }
- }
- function pageCoords(pos) {
- var local = localCoords(pos, true), off = eltOffset(lineSpace);
- return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
- }
-
- var cachedHeight, cachedHeightFor, measureText;
- function textHeight() {
- if (measureText == null) {
- measureText = "";
- for (var i = 0; i < 49; ++i) measureText += "x
";
- measureText += "x
";
- }
- var offsetHeight = lineDiv.clientHeight;
- if (offsetHeight == cachedHeightFor) return cachedHeight;
- cachedHeightFor = offsetHeight;
- measure.innerHTML = measureText;
- cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
- measure.innerHTML = "";
- return cachedHeight;
- }
- var cachedWidth, cachedWidthFor = 0;
- function charWidth() {
- if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
- cachedWidthFor = scroller.clientWidth;
- return (cachedWidth = stringWidth("x"));
- }
- function paddingTop() {return lineSpace.offsetTop;}
- function paddingLeft() {return lineSpace.offsetLeft;}
-
- function posFromMouse(e, liberal) {
- var offW = eltOffset(scroller, true), x, y;
- // Fails unpredictably on IE[67] when mouse is dragged around quickly.
- try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
- // This is a mess of a heuristic to try and determine whether a
- // scroll-bar was clicked or not, and to return null if one was
- // (and !liberal).
- if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight))
- return null;
- var offL = eltOffset(lineSpace, true);
- return coordsChar(x - offL.left, y - offL.top);
- }
- function onContextMenu(e) {
- var pos = posFromMouse(e), scrollPos = scroller.scrollTop;
- if (!pos || window.opera) return; // Opera is difficult.
- if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
- operation(setCursor)(pos.line, pos.ch);
-
- var oldCSS = input.style.cssText;
- inputDiv.style.position = "absolute";
- input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
- "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " +
- "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
- leaveInputAlone = true;
- var val = input.value = getSelection();
- focusInput();
- selectInput(input);
- function rehide() {
- var newVal = splitLines(input.value).join("\n");
- if (newVal != val) operation(replaceSelection)(newVal, "end");
- inputDiv.style.position = "relative";
- input.style.cssText = oldCSS;
- if (ie_lt9) scroller.scrollTop = scrollPos;
- leaveInputAlone = false;
- resetInput(true);
- slowPoll();
- }
-
- if (gecko) {
- e_stop(e);
- var mouseup = connect(window, "mouseup", function() {
- mouseup();
- setTimeout(rehide, 20);
- }, true);
- } else {
- setTimeout(rehide, 50);
- }
- }
-
- // Cursor-blinking
- function restartBlink() {
- clearInterval(blinker);
- var on = true;
- cursor.style.visibility = "";
- blinker = setInterval(function() {
- cursor.style.visibility = (on = !on) ? "" : "hidden";
- }, 650);
- }
-
- var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
- function matchBrackets(autoclear) {
- var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1;
- var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
- if (!match) return;
- var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
- for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
- if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
-
- var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
- function scan(line, from, to) {
- if (!line.text) return;
- var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
- for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
- var text = st[i];
- if (st[i+1] != null && st[i+1] != style) {pos += d * text.length; continue;}
- for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
- if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
- var match = matching[cur];
- if (match.charAt(1) == ">" == forward) stack.push(cur);
- else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
- else if (!stack.length) return {pos: pos, match: true};
- }
- }
- }
- }
- for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) {
- var line = getLine(i), first = i == head.line;
- var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
- if (found) break;
- }
- if (!found) found = {pos: null, match: false};
- var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
- var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
- two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
- var clear = operation(function(){one.clear(); two && two.clear();});
- if (autoclear) setTimeout(clear, 800);
- else bracketHighlighted = clear;
- }
-
- // Finds the line to start with when starting a parse. Tries to
- // find a line with a stateAfter, so that it can start with a
- // valid state. If that fails, it returns the line with the
- // smallest indentation, which tends to need the least context to
- // parse correctly.
- function findStartLine(n) {
- var minindent, minline;
- for (var search = n, lim = n - 40; search > lim; --search) {
- if (search == 0) return 0;
- var line = getLine(search-1);
- if (line.stateAfter) return search;
- var indented = line.indentation(options.tabSize);
- if (minline == null || minindent > indented) {
- minline = search - 1;
- minindent = indented;
- }
- }
- return minline;
- }
- function getStateBefore(n) {
- var start = findStartLine(n), state = start && getLine(start-1).stateAfter;
- if (!state) state = startState(mode);
- else state = copyState(mode, state);
- doc.iter(start, n, function(line) {
- line.highlight(mode, state, options.tabSize);
- line.stateAfter = copyState(mode, state);
- });
- if (start < n) changes.push({from: start, to: n});
- if (n < doc.size && !getLine(n).stateAfter) work.push(n);
- return state;
- }
- function highlightLines(start, end) {
- var state = getStateBefore(start);
- doc.iter(start, end, function(line) {
- line.highlight(mode, state, options.tabSize);
- line.stateAfter = copyState(mode, state);
- });
- }
- function highlightWorker() {
- var end = +new Date + options.workTime;
- var foundWork = work.length;
- while (work.length) {
- if (!getLine(showingFrom).stateAfter) var task = showingFrom;
- else var task = work.pop();
- if (task >= doc.size) continue;
- var start = findStartLine(task), state = start && getLine(start-1).stateAfter;
- if (state) state = copyState(mode, state);
- else state = startState(mode);
-
- var unchanged = 0, compare = mode.compareStates, realChange = false,
- i = start, bail = false;
- doc.iter(i, doc.size, function(line) {
- var hadState = line.stateAfter;
- if (+new Date > end) {
- work.push(i);
- startWorker(options.workDelay);
- if (realChange) changes.push({from: task, to: i + 1});
- return (bail = true);
- }
- var changed = line.highlight(mode, state, options.tabSize);
- if (changed) realChange = true;
- line.stateAfter = copyState(mode, state);
- var done = null;
- if (compare) {
- var same = hadState && compare(hadState, state);
- if (same != Pass) done = !!same;
- }
- if (done == null) {
- if (changed !== false || !hadState) unchanged = 0;
- else if (++unchanged > 3 && (!mode.indent || mode.indent(hadState, "") == mode.indent(state, "")))
- done = true;
- }
- if (done) return true;
- ++i;
- });
- if (bail) return;
- if (realChange) changes.push({from: task, to: i + 1});
- }
- if (foundWork && options.onHighlightComplete)
- options.onHighlightComplete(instance);
- }
- function startWorker(time) {
- if (!work.length) return;
- highlight.set(time, operation(highlightWorker));
- }
-
- // Operations are used to wrap changes in such a way that each
- // change won't have to update the cursor and display (which would
- // be awkward, slow, and error-prone), but instead updates are
- // batched and then all combined and executed at once.
- function startOperation() {
- updateInput = userSelChange = textChanged = null;
- changes = []; selectionChanged = false; callbacks = [];
- }
- function endOperation() {
- var reScroll = false, updated;
- if (selectionChanged) reScroll = !scrollCursorIntoView();
- if (changes.length) updated = updateDisplay(changes, true);
- else {
- if (selectionChanged) updateSelection();
- if (gutterDirty) updateGutter();
- }
- if (reScroll) scrollCursorIntoView();
- if (selectionChanged) {scrollEditorIntoView(); restartBlink();}
-
- if (focused && !leaveInputAlone &&
- (updateInput === true || (updateInput !== false && selectionChanged)))
- resetInput(userSelChange);
-
- if (selectionChanged && options.matchBrackets)
- setTimeout(operation(function() {
- if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
- if (posEq(sel.from, sel.to)) matchBrackets(false);
- }), 20);
- var tc = textChanged, cbs = callbacks; // these can be reset by callbacks
- if (selectionChanged && options.onCursorActivity)
- options.onCursorActivity(instance);
- if (tc && options.onChange && instance)
- options.onChange(instance, tc);
- for (var i = 0; i < cbs.length; ++i) cbs[i](instance);
- if (updated && options.onUpdate) options.onUpdate(instance);
- }
- var nestedOperation = 0;
- function operation(f) {
- return function() {
- if (!nestedOperation++) startOperation();
- try {var result = f.apply(this, arguments);}
- finally {if (!--nestedOperation) endOperation();}
- return result;
- };
- }
-
- function compoundChange(f) {
- history.startCompound();
- try { return f(); } finally { history.endCompound(); }
- }
-
- for (var ext in extensions)
- if (extensions.propertyIsEnumerable(ext) &&
- !instance.propertyIsEnumerable(ext))
- instance[ext] = extensions[ext];
- return instance;
- } // (end of function CodeMirror)
-
- // The default configuration options.
- CodeMirror.defaults = {
- value: "",
- mode: null,
- theme: "default",
- indentUnit: 2,
- indentWithTabs: false,
- smartIndent: true,
- tabSize: 4,
- keyMap: "default",
- extraKeys: null,
- electricChars: true,
- autoClearEmptyLines: false,
- onKeyEvent: null,
- onDragEvent: null,
- lineWrapping: false,
- lineNumbers: false,
- gutter: false,
- fixedGutter: false,
- firstLineNumber: 1,
- readOnly: false,
- dragDrop: true,
- onChange: null,
- onCursorActivity: null,
- onGutterClick: null,
- onHighlightComplete: null,
- onUpdate: null,
- onFocus: null, onBlur: null, onScroll: null,
- matchBrackets: false,
- workTime: 100,
- workDelay: 200,
- pollInterval: 100,
- undoDepth: 40,
- tabindex: null,
- autofocus: null
- };
-
- var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
- var mac = ios || /Mac/.test(navigator.platform);
- var win = /Win/.test(navigator.platform);
-
- // Known modes, by name and by MIME
- var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
- CodeMirror.defineMode = function(name, mode) {
- if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
- if (arguments.length > 2) {
- mode.dependencies = [];
- for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
- }
- modes[name] = mode;
- };
- CodeMirror.defineMIME = function(mime, spec) {
- mimeModes[mime] = spec;
- };
- CodeMirror.resolveMode = function(spec) {
- if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
- spec = mimeModes[spec];
- else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec))
- return CodeMirror.resolveMode("application/xml");
- if (typeof spec == "string") return {name: spec};
- else return spec || {name: "null"};
- };
- CodeMirror.getMode = function(options, spec) {
- var spec = CodeMirror.resolveMode(spec);
- var mfactory = modes[spec.name];
- if (!mfactory) return CodeMirror.getMode(options, "text/plain");
- return mfactory(options, spec);
- };
- CodeMirror.listModes = function() {
- var list = [];
- for (var m in modes)
- if (modes.propertyIsEnumerable(m)) list.push(m);
- return list;
- };
- CodeMirror.listMIMEs = function() {
- var list = [];
- for (var m in mimeModes)
- if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]});
- return list;
- };
-
- var extensions = CodeMirror.extensions = {};
- CodeMirror.defineExtension = function(name, func) {
- extensions[name] = func;
- };
-
- var commands = CodeMirror.commands = {
- selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
- killLine: function(cm) {
- var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
- if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, {line: from.line + 1, ch: 0});
- else cm.replaceRange("", from, sel ? to : {line: from.line});
- },
- deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
- undo: function(cm) {cm.undo();},
- redo: function(cm) {cm.redo();},
- goDocStart: function(cm) {cm.setCursor(0, 0, true);},
- goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
- goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);},
- goLineStartSmart: function(cm) {
- var cur = cm.getCursor();
- var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/));
- cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);
- },
- goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);},
- goLineUp: function(cm) {cm.moveV(-1, "line");},
- goLineDown: function(cm) {cm.moveV(1, "line");},
- goPageUp: function(cm) {cm.moveV(-1, "page");},
- goPageDown: function(cm) {cm.moveV(1, "page");},
- goCharLeft: function(cm) {cm.moveH(-1, "char");},
- goCharRight: function(cm) {cm.moveH(1, "char");},
- goColumnLeft: function(cm) {cm.moveH(-1, "column");},
- goColumnRight: function(cm) {cm.moveH(1, "column");},
- goWordLeft: function(cm) {cm.moveH(-1, "word");},
- goWordRight: function(cm) {cm.moveH(1, "word");},
- delCharLeft: function(cm) {cm.deleteH(-1, "char");},
- delCharRight: function(cm) {cm.deleteH(1, "char");},
- delWordLeft: function(cm) {cm.deleteH(-1, "word");},
- delWordRight: function(cm) {cm.deleteH(1, "word");},
- indentAuto: function(cm) {cm.indentSelection("smart");},
- indentMore: function(cm) {cm.indentSelection("add");},
- indentLess: function(cm) {cm.indentSelection("subtract");},
- insertTab: function(cm) {cm.replaceSelection("\t", "end");},
- transposeChars: function(cm) {
- var cur = cm.getCursor(), line = cm.getLine(cur.line);
- if (cur.ch > 0 && cur.ch < line.length - 1)
- cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
- {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
- },
- newlineAndIndent: function(cm) {
- cm.replaceSelection("\n", "end");
- cm.indentLine(cm.getCursor().line);
- },
- toggleOverwrite: function(cm) {cm.toggleOverwrite();}
- };
-
- var keyMap = CodeMirror.keyMap = {};
- keyMap.basic = {
- "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
- "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
- "Delete": "delCharRight", "Backspace": "delCharLeft", "Tab": "insertTab", "Shift-Tab": "indentAuto",
- "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
- };
- // Note that the save and find-related commands aren't defined by
- // default. Unknown commands are simply ignored.
- keyMap.pcDefault = {
- "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
- "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
- "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
- "Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "Ctrl-S": "save", "Ctrl-F": "find",
- "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
- "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
- fallthrough: "basic"
- };
- keyMap.macDefault = {
- "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
- "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
- "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft",
- "Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "Cmd-S": "save", "Cmd-F": "find",
- "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
- "Cmd-[": "indentLess", "Cmd-]": "indentMore",
- fallthrough: ["basic", "emacsy"]
- };
- keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
- keyMap.emacsy = {
- "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
- "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
- "Ctrl-V": "goPageUp", "Shift-Ctrl-V": "goPageDown", "Ctrl-D": "delCharRight", "Ctrl-H": "delCharLeft",
- "Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
- };
-
- function getKeyMap(val) {
- if (typeof val == "string") return keyMap[val];
- else return val;
- }
- function lookupKey(name, extraMap, map, handle, stop) {
- function lookup(map) {
- map = getKeyMap(map);
- var found = map[name];
- if (found != null && handle(found)) return true;
- if (map.nofallthrough) {
- if (stop) stop();
- return true;
- }
- var fallthrough = map.fallthrough;
- if (fallthrough == null) return false;
- if (Object.prototype.toString.call(fallthrough) != "[object Array]")
- return lookup(fallthrough);
- for (var i = 0, e = fallthrough.length; i < e; ++i) {
- if (lookup(fallthrough[i])) return true;
- }
- return false;
- }
- if (extraMap && lookup(extraMap)) return true;
- return lookup(map);
- }
- function isModifierKey(event) {
- var name = keyNames[e_prop(event, "keyCode")];
- return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
- }
-
- CodeMirror.fromTextArea = function(textarea, options) {
- if (!options) options = {};
- options.value = textarea.value;
- if (!options.tabindex && textarea.tabindex)
- options.tabindex = textarea.tabindex;
- if (options.autofocus == null && textarea.getAttribute("autofocus") != null)
- options.autofocus = true;
-
- function save() {textarea.value = instance.getValue();}
- if (textarea.form) {
- // Deplorable hack to make the submit method do the right thing.
- var rmSubmit = connect(textarea.form, "submit", save, true);
- if (typeof textarea.form.submit == "function") {
- var realSubmit = textarea.form.submit;
- function wrappedSubmit() {
- save();
- textarea.form.submit = realSubmit;
- textarea.form.submit();
- textarea.form.submit = wrappedSubmit;
- }
- textarea.form.submit = wrappedSubmit;
- }
- }
-
- textarea.style.display = "none";
- var instance = CodeMirror(function(node) {
- textarea.parentNode.insertBefore(node, textarea.nextSibling);
- }, options);
- instance.save = save;
- instance.getTextArea = function() { return textarea; };
- instance.toTextArea = function() {
- save();
- textarea.parentNode.removeChild(instance.getWrapperElement());
- textarea.style.display = "";
- if (textarea.form) {
- rmSubmit();
- if (typeof textarea.form.submit == "function")
- textarea.form.submit = realSubmit;
- }
- };
- return instance;
- };
-
- // Utility functions for working with state. Exported because modes
- // sometimes need to do this.
- function copyState(mode, state) {
- if (state === true) return state;
- if (mode.copyState) return mode.copyState(state);
- var nstate = {};
- for (var n in state) {
- var val = state[n];
- if (val instanceof Array) val = val.concat([]);
- nstate[n] = val;
- }
- return nstate;
- }
- CodeMirror.copyState = copyState;
- function startState(mode, a1, a2) {
- return mode.startState ? mode.startState(a1, a2) : true;
- }
- CodeMirror.startState = startState;
-
- // The character stream used by a mode's parser.
- function StringStream(string, tabSize) {
- this.pos = this.start = 0;
- this.string = string;
- this.tabSize = tabSize || 8;
- }
- StringStream.prototype = {
- eol: function() {return this.pos >= this.string.length;},
- sol: function() {return this.pos == 0;},
- peek: function() {return this.string.charAt(this.pos);},
- next: function() {
- if (this.pos < this.string.length)
- return this.string.charAt(this.pos++);
- },
- eat: function(match) {
- var ch = this.string.charAt(this.pos);
- if (typeof match == "string") var ok = ch == match;
- else var ok = ch && (match.test ? match.test(ch) : match(ch));
- if (ok) {++this.pos; return ch;}
- },
- eatWhile: function(match) {
- var start = this.pos;
- while (this.eat(match)){}
- return this.pos > start;
- },
- eatSpace: function() {
- var start = this.pos;
- while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
- return this.pos > start;
- },
- skipToEnd: function() {this.pos = this.string.length;},
- skipTo: function(ch) {
- var found = this.string.indexOf(ch, this.pos);
- if (found > -1) {this.pos = found; return true;}
- },
- backUp: function(n) {this.pos -= n;},
- column: function() {return countColumn(this.string, this.start, this.tabSize);},
- indentation: function() {return countColumn(this.string, null, this.tabSize);},
- match: function(pattern, consume, caseInsensitive) {
- if (typeof pattern == "string") {
- function cased(str) {return caseInsensitive ? str.toLowerCase() : str;}
- if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
- if (consume !== false) this.pos += pattern.length;
- return true;
- }
- }
- else {
- var match = this.string.slice(this.pos).match(pattern);
- if (match && consume !== false) this.pos += match[0].length;
- return match;
- }
- },
- current: function(){return this.string.slice(this.start, this.pos);}
- };
- CodeMirror.StringStream = StringStream;
-
- function MarkedText(from, to, className, marker) {
- this.from = from; this.to = to; this.style = className; this.marker = marker;
- }
- MarkedText.prototype = {
- attach: function(line) { this.marker.set.push(line); },
- detach: function(line) {
- var ix = indexOf(this.marker.set, line);
- if (ix > -1) this.marker.set.splice(ix, 1);
- },
- split: function(pos, lenBefore) {
- if (this.to <= pos && this.to != null) return null;
- var from = this.from < pos || this.from == null ? null : this.from - pos + lenBefore;
- var to = this.to == null ? null : this.to - pos + lenBefore;
- return new MarkedText(from, to, this.style, this.marker);
- },
- dup: function() { return new MarkedText(null, null, this.style, this.marker); },
- clipTo: function(fromOpen, from, toOpen, to, diff) {
- if (fromOpen && to > this.from && (to < this.to || this.to == null))
- this.from = null;
- else if (this.from != null && this.from >= from)
- this.from = Math.max(to, this.from) + diff;
- if (toOpen && (from < this.to || this.to == null) && (from > this.from || this.from == null))
- this.to = null;
- else if (this.to != null && this.to > from)
- this.to = to < this.to ? this.to + diff : from;
- },
- isDead: function() { return this.from != null && this.to != null && this.from >= this.to; },
- sameSet: function(x) { return this.marker == x.marker; }
- };
-
- function Bookmark(pos) {
- this.from = pos; this.to = pos; this.line = null;
- }
- Bookmark.prototype = {
- attach: function(line) { this.line = line; },
- detach: function(line) { if (this.line == line) this.line = null; },
- split: function(pos, lenBefore) {
- if (pos < this.from) {
- this.from = this.to = (this.from - pos) + lenBefore;
- return this;
- }
- },
- isDead: function() { return this.from > this.to; },
- clipTo: function(fromOpen, from, toOpen, to, diff) {
- if ((fromOpen || from < this.from) && (toOpen || to > this.to)) {
- this.from = 0; this.to = -1;
- } else if (this.from > from) {
- this.from = this.to = Math.max(to, this.from) + diff;
- }
- },
- sameSet: function(x) { return false; },
- find: function() {
- if (!this.line || !this.line.parent) return null;
- return {line: lineNo(this.line), ch: this.from};
- },
- clear: function() {
- if (this.line) {
- var found = indexOf(this.line.marked, this);
- if (found != -1) this.line.marked.splice(found, 1);
- this.line = null;
- }
- }
- };
-
- // Line objects. These hold state related to a line, including
- // highlighting info (the styles array).
- function Line(text, styles) {
- this.styles = styles || [text, null];
- this.text = text;
- this.height = 1;
- this.marked = this.gutterMarker = this.className = this.bgClassName = this.handlers = null;
- this.stateAfter = this.parent = this.hidden = null;
- }
- Line.inheritMarks = function(text, orig) {
- var ln = new Line(text), mk = orig && orig.marked;
- if (mk) {
- for (var i = 0; i < mk.length; ++i) {
- if (mk[i].to == null && mk[i].style) {
- var newmk = ln.marked || (ln.marked = []), mark = mk[i];
- var nmark = mark.dup(); newmk.push(nmark); nmark.attach(ln);
- }
- }
- }
- return ln;
- }
- Line.prototype = {
- // Replace a piece of a line, keeping the styles around it intact.
- replace: function(from, to_, text) {
- var st = [], mk = this.marked, to = to_ == null ? this.text.length : to_;
- copyStyles(0, from, this.styles, st);
- if (text) st.push(text, null);
- copyStyles(to, this.text.length, this.styles, st);
- this.styles = st;
- this.text = this.text.slice(0, from) + text + this.text.slice(to);
- this.stateAfter = null;
- if (mk) {
- var diff = text.length - (to - from);
- for (var i = 0; i < mk.length; ++i) {
- var mark = mk[i];
- mark.clipTo(from == null, from || 0, to_ == null, to, diff);
- if (mark.isDead()) {mark.detach(this); mk.splice(i--, 1);}
- }
- }
- },
- // Split a part off a line, keeping styles and markers intact.
- split: function(pos, textBefore) {
- var st = [textBefore, null], mk = this.marked;
- copyStyles(pos, this.text.length, this.styles, st);
- var taken = new Line(textBefore + this.text.slice(pos), st);
- if (mk) {
- for (var i = 0; i < mk.length; ++i) {
- var mark = mk[i];
- var newmark = mark.split(pos, textBefore.length);
- if (newmark) {
- if (!taken.marked) taken.marked = [];
- taken.marked.push(newmark); newmark.attach(taken);
- if (newmark == mark) mk.splice(i--, 1);
- }
- }
- }
- return taken;
- },
- append: function(line) {
- var mylen = this.text.length, mk = line.marked, mymk = this.marked;
- this.text += line.text;
- copyStyles(0, line.text.length, line.styles, this.styles);
- if (mymk) {
- for (var i = 0; i < mymk.length; ++i)
- if (mymk[i].to == null) mymk[i].to = mylen;
- }
- if (mk && mk.length) {
- if (!mymk) this.marked = mymk = [];
- outer: for (var i = 0; i < mk.length; ++i) {
- var mark = mk[i];
- if (!mark.from) {
- for (var j = 0; j < mymk.length; ++j) {
- var mymark = mymk[j];
- if (mymark.to == mylen && mymark.sameSet(mark)) {
- mymark.to = mark.to == null ? null : mark.to + mylen;
- if (mymark.isDead()) {
- mymark.detach(this);
- mk.splice(i--, 1);
- }
- continue outer;
- }
- }
- }
- mymk.push(mark);
- mark.attach(this);
- mark.from += mylen;
- if (mark.to != null) mark.to += mylen;
- }
- }
- },
- fixMarkEnds: function(other) {
- var mk = this.marked, omk = other.marked;
- if (!mk) return;
- for (var i = 0; i < mk.length; ++i) {
- var mark = mk[i], close = mark.to == null;
- if (close && omk) {
- for (var j = 0; j < omk.length; ++j)
- if (omk[j].sameSet(mark)) {close = false; break;}
- }
- if (close) mark.to = this.text.length;
- }
- },
- fixMarkStarts: function() {
- var mk = this.marked;
- if (!mk) return;
- for (var i = 0; i < mk.length; ++i)
- if (mk[i].from == null) mk[i].from = 0;
- },
- addMark: function(mark) {
- mark.attach(this);
- if (this.marked == null) this.marked = [];
- this.marked.push(mark);
- this.marked.sort(function(a, b){return (a.from || 0) - (b.from || 0);});
- },
- // Run the given mode's parser over a line, update the styles
- // array, which contains alternating fragments of text and CSS
- // classes.
- highlight: function(mode, state, tabSize) {
- var stream = new StringStream(this.text, tabSize), st = this.styles, pos = 0;
- var changed = false, curWord = st[0], prevWord;
- if (this.text == "" && mode.blankLine) mode.blankLine(state);
- while (!stream.eol()) {
- var style = mode.token(stream, state);
- var substr = this.text.slice(stream.start, stream.pos);
- stream.start = stream.pos;
- if (pos && st[pos-1] == style)
- st[pos-2] += substr;
- else if (substr) {
- if (!changed && (st[pos+1] != style || (pos && st[pos-2] != prevWord))) changed = true;
- st[pos++] = substr; st[pos++] = style;
- prevWord = curWord; curWord = st[pos];
- }
- // Give up when line is ridiculously long
- if (stream.pos > 5000) {
- st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
- break;
- }
- }
- if (st.length != pos) {st.length = pos; changed = true;}
- if (pos && st[pos-2] != prevWord) changed = true;
- // Short lines with simple highlights return null, and are
- // counted as changed by the driver because they are likely to
- // highlight the same way in various contexts.
- return changed || (st.length < 5 && this.text.length < 10 ? null : false);
- },
- // Fetch the parser token for a given character. Useful for hacks
- // that want to inspect the mode state (say, for completion).
- getTokenAt: function(mode, state, ch) {
- var txt = this.text, stream = new StringStream(txt);
- while (stream.pos < ch && !stream.eol()) {
- stream.start = stream.pos;
- var style = mode.token(stream, state);
- }
- return {start: stream.start,
- end: stream.pos,
- string: stream.current(),
- className: style || null,
- state: state};
- },
- indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},
- // Produces an HTML fragment for the line, taking selection,
- // marking, and highlighting into account.
- getHTML: function(makeTab, wrapAt, wrapId, wrapWBR) {
- var html = [], first = true, col = 0;
- function span_(text, style) {
- if (!text) return;
- // Work around a bug where, in some compat modes, IE ignores leading spaces
- if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1);
- first = false;
- if (text.indexOf("\t") == -1) {
- col += text.length;
- var escaped = htmlEscape(text);
- } else {
- var escaped = "";
- for (var pos = 0;;) {
- var idx = text.indexOf("\t", pos);
- if (idx == -1) {
- escaped += htmlEscape(text.slice(pos));
- col += text.length - pos;
- break;
- } else {
- col += idx - pos;
- var tab = makeTab(col);
- escaped += htmlEscape(text.slice(pos, idx)) + tab.html;
- col += tab.width;
- pos = idx + 1;
- }
- }
- }
- if (style) html.push('', escaped, "");
- else html.push(escaped);
- }
- var span = span_;
- if (wrapAt != null) {
- var outPos = 0, open = "";
- span = function(text, style) {
- var l = text.length;
- if (wrapAt >= outPos && wrapAt < outPos + l) {
- if (wrapAt > outPos) {
- span_(text.slice(0, wrapAt - outPos), style);
- // See comment at the definition of spanAffectsWrapping
- if (wrapWBR) html.push("");
- }
- html.push(open);
- span_(text.slice(wrapAt - outPos), style);
- html.push("");
- wrapAt--;
- outPos += l;
- } else {
- outPos += l;
- span_(text, style);
- // Output empty wrapper when at end of line
- if (outPos == wrapAt && outPos == len) html.push(open + "");
- // Stop outputting HTML when gone sufficiently far beyond measure
- else if (outPos > wrapAt + 10 && /\s/.test(text)) span = function(){};
- }
- }
- }
-
- var st = this.styles, allText = this.text, marked = this.marked;
- var len = allText.length;
- function styleToClass(style) {
- if (!style) return null;
- return "cm-" + style.replace(/ +/g, " cm-");
- }
-
- if (!allText && wrapAt == null) {
- span(" ");
- } else if (!marked || !marked.length) {
- for (var i = 0, ch = 0; ch < len; i+=2) {
- var str = st[i], style = st[i+1], l = str.length;
- if (ch + l > len) str = str.slice(0, len - ch);
- ch += l;
- span(str, styleToClass(style));
- }
- } else {
- var pos = 0, i = 0, text = "", style, sg = 0;
- var nextChange = marked[0].from || 0, marks = [], markpos = 0;
- function advanceMarks() {
- var m;
- while (markpos < marked.length &&
- ((m = marked[markpos]).from == pos || m.from == null)) {
- if (m.style != null) marks.push(m);
- ++markpos;
- }
- nextChange = markpos < marked.length ? marked[markpos].from : Infinity;
- for (var i = 0; i < marks.length; ++i) {
- var to = marks[i].to || Infinity;
- if (to == pos) marks.splice(i--, 1);
- else nextChange = Math.min(to, nextChange);
- }
- }
- var m = 0;
- while (pos < len) {
- if (nextChange == pos) advanceMarks();
- var upto = Math.min(len, nextChange);
- while (true) {
- if (text) {
- var end = pos + text.length;
- var appliedStyle = style;
- for (var j = 0; j < marks.length; ++j)
- appliedStyle = (appliedStyle ? appliedStyle + " " : "") + marks[j].style;
- span(end > upto ? text.slice(0, upto - pos) : text, appliedStyle);
- if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
- pos = end;
- }
- text = st[i++]; style = styleToClass(st[i++]);
- }
- }
- }
- return html.join("");
- },
- cleanUp: function() {
- this.parent = null;
- if (this.marked)
- for (var i = 0, e = this.marked.length; i < e; ++i) this.marked[i].detach(this);
- }
- };
- // Utility used by replace and split above
- function copyStyles(from, to, source, dest) {
- for (var i = 0, pos = 0, state = 0; pos < to; i+=2) {
- var part = source[i], end = pos + part.length;
- if (state == 0) {
- if (end > from) dest.push(part.slice(from - pos, Math.min(part.length, to - pos)), source[i+1]);
- if (end >= from) state = 1;
- }
- else if (state == 1) {
- if (end > to) dest.push(part.slice(0, to - pos), source[i+1]);
- else dest.push(part, source[i+1]);
- }
- pos = end;
- }
- }
-
- // Data structure that holds the sequence of lines.
- function LeafChunk(lines) {
- this.lines = lines;
- this.parent = null;
- for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
- lines[i].parent = this;
- height += lines[i].height;
- }
- this.height = height;
- }
- LeafChunk.prototype = {
- chunkSize: function() { return this.lines.length; },
- remove: function(at, n, callbacks) {
- for (var i = at, e = at + n; i < e; ++i) {
- var line = this.lines[i];
- this.height -= line.height;
- line.cleanUp();
- if (line.handlers)
- for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]);
- }
- this.lines.splice(at, n);
- },
- collapse: function(lines) {
- lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
- },
- insertHeight: function(at, lines, height) {
- this.height += height;
- // The trick below is apparently too advanced for IE, which
- // occasionally corrupts this.lines (duplicating elements) when
- // it is used.
- if (ie) this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
- else this.lines.splice.apply(this.lines, [at, 0].concat(lines));
- for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
- },
- iterN: function(at, n, op) {
- for (var e = at + n; at < e; ++at)
- if (op(this.lines[at])) return true;
- }
- };
- function BranchChunk(children) {
- this.children = children;
- var size = 0, height = 0;
- for (var i = 0, e = children.length; i < e; ++i) {
- var ch = children[i];
- size += ch.chunkSize(); height += ch.height;
- ch.parent = this;
- }
- this.size = size;
- this.height = height;
- this.parent = null;
- }
- BranchChunk.prototype = {
- chunkSize: function() { return this.size; },
- remove: function(at, n, callbacks) {
- this.size -= n;
- for (var i = 0; i < this.children.length; ++i) {
- var child = this.children[i], sz = child.chunkSize();
- if (at < sz) {
- var rm = Math.min(n, sz - at), oldHeight = child.height;
- child.remove(at, rm, callbacks);
- this.height -= oldHeight - child.height;
- if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
- if ((n -= rm) == 0) break;
- at = 0;
- } else at -= sz;
- }
- if (this.size - n < 25) {
- var lines = [];
- this.collapse(lines);
- this.children = [new LeafChunk(lines)];
- this.children[0].parent = this;
- }
- },
- collapse: function(lines) {
- for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
- },
- insert: function(at, lines) {
- var height = 0;
- for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
- this.insertHeight(at, lines, height);
- },
- insertHeight: function(at, lines, height) {
- this.size += lines.length;
- this.height += height;
- for (var i = 0, e = this.children.length; i < e; ++i) {
- var child = this.children[i], sz = child.chunkSize();
- if (at <= sz) {
- child.insertHeight(at, lines, height);
- if (child.lines && child.lines.length > 50) {
- while (child.lines.length > 50) {
- var spilled = child.lines.splice(child.lines.length - 25, 25);
- var newleaf = new LeafChunk(spilled);
- child.height -= newleaf.height;
- this.children.splice(i + 1, 0, newleaf);
- newleaf.parent = this;
- }
- this.maybeSpill();
- }
- break;
- }
- at -= sz;
- }
- },
- maybeSpill: function() {
- if (this.children.length <= 10) return;
- var me = this;
- do {
- var spilled = me.children.splice(me.children.length - 5, 5);
- var sibling = new BranchChunk(spilled);
- if (!me.parent) { // Become the parent node
- var copy = new BranchChunk(me.children);
- copy.parent = me;
- me.children = [copy, sibling];
- me = copy;
- } else {
- me.size -= sibling.size;
- me.height -= sibling.height;
- var myIndex = indexOf(me.parent.children, me);
- me.parent.children.splice(myIndex + 1, 0, sibling);
- }
- sibling.parent = me.parent;
- } while (me.children.length > 10);
- me.parent.maybeSpill();
- },
- iter: function(from, to, op) { this.iterN(from, to - from, op); },
- iterN: function(at, n, op) {
- for (var i = 0, e = this.children.length; i < e; ++i) {
- var child = this.children[i], sz = child.chunkSize();
- if (at < sz) {
- var used = Math.min(n, sz - at);
- if (child.iterN(at, used, op)) return true;
- if ((n -= used) == 0) break;
- at = 0;
- } else at -= sz;
- }
- }
- };
-
- function getLineAt(chunk, n) {
- while (!chunk.lines) {
- for (var i = 0;; ++i) {
- var child = chunk.children[i], sz = child.chunkSize();
- if (n < sz) { chunk = child; break; }
- n -= sz;
- }
- }
- return chunk.lines[n];
- }
- function lineNo(line) {
- if (line.parent == null) return null;
- var cur = line.parent, no = indexOf(cur.lines, line);
- for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
- for (var i = 0, e = chunk.children.length; ; ++i) {
- if (chunk.children[i] == cur) break;
- no += chunk.children[i].chunkSize();
- }
- }
- return no;
- }
- function lineAtHeight(chunk, h) {
- var n = 0;
- outer: do {
- for (var i = 0, e = chunk.children.length; i < e; ++i) {
- var child = chunk.children[i], ch = child.height;
- if (h < ch) { chunk = child; continue outer; }
- h -= ch;
- n += child.chunkSize();
- }
- return n;
- } while (!chunk.lines);
- for (var i = 0, e = chunk.lines.length; i < e; ++i) {
- var line = chunk.lines[i], lh = line.height;
- if (h < lh) break;
- h -= lh;
- }
- return n + i;
- }
- function heightAtLine(chunk, n) {
- var h = 0;
- outer: do {
- for (var i = 0, e = chunk.children.length; i < e; ++i) {
- var child = chunk.children[i], sz = child.chunkSize();
- if (n < sz) { chunk = child; continue outer; }
- n -= sz;
- h += child.height;
- }
- return h;
- } while (!chunk.lines);
- for (var i = 0; i < n; ++i) h += chunk.lines[i].height;
- return h;
- }
-
- // The history object 'chunks' changes that are made close together
- // and at almost the same time into bigger undoable units.
- function History() {
- this.time = 0;
- this.done = []; this.undone = [];
- this.compound = 0;
- this.closed = false;
- }
- History.prototype = {
- addChange: function(start, added, old) {
- this.undone.length = 0;
- var time = +new Date, cur = this.done[this.done.length - 1], last = cur && cur[cur.length - 1];
- var dtime = time - this.time;
-
- if (this.compound && cur && !this.closed) {
- cur.push({start: start, added: added, old: old});
- } else if (dtime > 400 || !last || this.closed ||
- last.start > start + old.length || last.start + last.added < start) {
- this.done.push([{start: start, added: added, old: old}]);
- this.closed = false;
- } else {
- var startBefore = Math.max(0, last.start - start),
- endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
- for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
- for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
- if (startBefore) last.start = start;
- last.added += added - (old.length - startBefore - endAfter);
- }
- this.time = time;
- },
- startCompound: function() {
- if (!this.compound++) this.closed = true;
- },
- endCompound: function() {
- if (!--this.compound) this.closed = true;
- }
- };
-
- function stopMethod() {e_stop(this);}
- // Ensure an event has a stop method.
- function addStop(event) {
- if (!event.stop) event.stop = stopMethod;
- return event;
- }
-
- function e_preventDefault(e) {
- if (e.preventDefault) e.preventDefault();
- else e.returnValue = false;
- }
- function e_stopPropagation(e) {
- if (e.stopPropagation) e.stopPropagation();
- else e.cancelBubble = true;
- }
- function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
- CodeMirror.e_stop = e_stop;
- CodeMirror.e_preventDefault = e_preventDefault;
- CodeMirror.e_stopPropagation = e_stopPropagation;
-
- function e_target(e) {return e.target || e.srcElement;}
- function e_button(e) {
- if (e.which) return e.which;
- else if (e.button & 1) return 1;
- else if (e.button & 2) return 3;
- else if (e.button & 4) return 2;
- }
-
- // Allow 3rd-party code to override event properties by adding an override
- // object to an event object.
- function e_prop(e, prop) {
- var overridden = e.override && e.override.hasOwnProperty(prop);
- return overridden ? e.override[prop] : e[prop];
- }
-
- // Event handler registration. If disconnect is true, it'll return a
- // function that unregisters the handler.
- function connect(node, type, handler, disconnect) {
- if (typeof node.addEventListener == "function") {
- node.addEventListener(type, handler, false);
- if (disconnect) return function() {node.removeEventListener(type, handler, false);};
- }
- else {
- var wrapHandler = function(event) {handler(event || window.event);};
- node.attachEvent("on" + type, wrapHandler);
- if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
- }
- }
- CodeMirror.connect = connect;
-
- function Delayed() {this.id = null;}
- Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
-
- var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
-
- var gecko = /gecko\/\d{7}/i.test(navigator.userAgent);
- var ie = /MSIE \d/.test(navigator.userAgent);
- var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
- var quirksMode = ie && document.documentMode == 5;
- var webkit = /WebKit\//.test(navigator.userAgent);
- var chrome = /Chrome\//.test(navigator.userAgent);
- var safari = /Apple Computer/.test(navigator.vendor);
- var khtml = /KHTML\//.test(navigator.userAgent);
-
- // Detect drag-and-drop
- var dragAndDrop = function() {
- // There is *some* kind of drag-and-drop support in IE6-8, but I
- // couldn't get it to work yet.
- if (ie_lt9) return false;
- var div = document.createElement('div');
- return "draggable" in div || "dragDrop" in div;
- }();
-
- // Feature-detect whether newlines in textareas are converted to \r\n
- var lineSep = function () {
- var te = document.createElement("textarea");
- te.value = "foo\nbar";
- if (te.value.indexOf("\r") > -1) return "\r\n";
- return "\n";
- }();
-
- // For a reason I have yet to figure out, some browsers disallow
- // word wrapping between certain characters *only* if a new inline
- // element is started between them. This makes it hard to reliably
- // measure the position of things, since that requires inserting an
- // extra span. This terribly fragile set of regexps matches the
- // character combinations that suffer from this phenomenon on the
- // various browsers.
- var spanAffectsWrapping = /^$/; // Won't match any two-character string
- if (gecko) spanAffectsWrapping = /$'/;
- else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
- else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
-
- // Counts the column offset in a string, taking tabs into account.
- // Used mostly to find indentation.
- function countColumn(string, end, tabSize) {
- if (end == null) {
- end = string.search(/[^\s\u00a0]/);
- if (end == -1) end = string.length;
- }
- for (var i = 0, n = 0; i < end; ++i) {
- if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
- else ++n;
- }
- return n;
- }
-
- function computedStyle(elt) {
- if (elt.currentStyle) return elt.currentStyle;
- return window.getComputedStyle(elt, null);
- }
-
- // Find the position of an element by following the offsetParent chain.
- // If screen==true, it returns screen (rather than page) coordinates.
- function eltOffset(node, screen) {
- var bod = node.ownerDocument.body;
- var x = 0, y = 0, skipBody = false;
- for (var n = node; n; n = n.offsetParent) {
- var ol = n.offsetLeft, ot = n.offsetTop;
- // Firefox reports weird inverted offsets when the body has a border.
- if (n == bod) { x += Math.abs(ol); y += Math.abs(ot); }
- else { x += ol, y += ot; }
- if (screen && computedStyle(n).position == "fixed")
- skipBody = true;
- }
- var e = screen && !skipBody ? null : bod;
- for (var n = node.parentNode; n != e; n = n.parentNode)
- if (n.scrollLeft != null) { x -= n.scrollLeft; y -= n.scrollTop;}
- return {left: x, top: y};
- }
- // Use the faster and saner getBoundingClientRect method when possible.
- if (document.documentElement.getBoundingClientRect != null) eltOffset = function(node, screen) {
- // Take the parts of bounding client rect that we are interested in so we are able to edit if need be,
- // since the returned value cannot be changed externally (they are kept in sync as the element moves within the page)
- try { var box = node.getBoundingClientRect(); box = { top: box.top, left: box.left }; }
- catch(e) { box = {top: 0, left: 0}; }
- if (!screen) {
- // Get the toplevel scroll, working around browser differences.
- if (window.pageYOffset == null) {
- var t = document.documentElement || document.body.parentNode;
- if (t.scrollTop == null) t = document.body;
- box.top += t.scrollTop; box.left += t.scrollLeft;
- } else {
- box.top += window.pageYOffset; box.left += window.pageXOffset;
- }
- }
- return box;
- };
-
- // Get a node's text content.
- function eltText(node) {
- return node.textContent || node.innerText || node.nodeValue || "";
- }
- function selectInput(node) {
- if (ios) { // Mobile Safari apparently has a bug where select() is broken.
- node.selectionStart = 0;
- node.selectionEnd = node.value.length;
- } else node.select();
- }
-
- // Operations on {line, ch} objects.
- function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
- function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
- function copyPos(x) {return {line: x.line, ch: x.ch};}
-
- var escapeElement = document.createElement("pre");
- function htmlEscape(str) {
- escapeElement.textContent = str;
- return escapeElement.innerHTML;
- }
- // Recent (late 2011) Opera betas insert bogus newlines at the start
- // of the textContent, so we strip those.
- if (htmlEscape("a") == "\na")
- htmlEscape = function(str) {
- escapeElement.textContent = str;
- return escapeElement.innerHTML.slice(1);
- };
- // Some IEs don't preserve tabs through innerHTML
- else if (htmlEscape("\t") != "\t")
- htmlEscape = function(str) {
- escapeElement.innerHTML = "";
- escapeElement.appendChild(document.createTextNode(str));
- return escapeElement.innerHTML;
- };
- CodeMirror.htmlEscape = htmlEscape;
-
- // Used to position the cursor after an undo/redo by finding the
- // last edited character.
- function editEnd(from, to) {
- if (!to) return 0;
- if (!from) return to.length;
- for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
- if (from.charAt(i) != to.charAt(j)) break;
- return j + 1;
- }
-
- function indexOf(collection, elt) {
- if (collection.indexOf) return collection.indexOf(elt);
- for (var i = 0, e = collection.length; i < e; ++i)
- if (collection[i] == elt) return i;
- return -1;
- }
- function isWordChar(ch) {
- return /\w/.test(ch) || ch.toUpperCase() != ch.toLowerCase();
- }
-
- // See if "".split is the broken IE version, if so, provide an
- // alternative way to split lines.
- var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
- var pos = 0, nl, result = [];
- while ((nl = string.indexOf("\n", pos)) > -1) {
- result.push(string.slice(pos, string.charAt(nl-1) == "\r" ? nl - 1 : nl));
- pos = nl + 1;
- }
- result.push(string.slice(pos));
- return result;
- } : function(string){return string.split(/\r?\n/);};
- CodeMirror.splitLines = splitLines;
-
- var hasSelection = window.getSelection ? function(te) {
- try { return te.selectionStart != te.selectionEnd; }
- catch(e) { return false; }
- } : function(te) {
- try {var range = te.ownerDocument.selection.createRange();}
- catch(e) {}
- if (!range || range.parentElement() != te) return false;
- return range.compareEndPoints("StartToEnd", range) != 0;
- };
-
- CodeMirror.defineMode("null", function() {
- return {token: function(stream) {stream.skipToEnd();}};
- });
- CodeMirror.defineMIME("text/plain", "null");
-
- var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
- 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
- 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
- 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 127: "Delete", 186: ";", 187: "=", 188: ",",
- 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'", 63276: "PageUp",
- 63277: "PageDown", 63275: "End", 63273: "Home", 63234: "Left", 63232: "Up", 63235: "Right",
- 63233: "Down", 63302: "Insert", 63272: "Delete"};
- CodeMirror.keyNames = keyNames;
- (function() {
- // Number keys
- for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
- // Alphabetic keys
- for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
- // Function keys
- for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
- })();
-
- return CodeMirror;
-})();
+// CodeMirror version 2.24
+//
+// All functions that need access to the editor's state live inside
+// the CodeMirror function. Below that, at the bottom of the file,
+// some utilities are defined.
+
+// CodeMirror is the only global var we claim
+var CodeMirror = (function() {
+ // This is the function that produces an editor instance. Its
+ // closure is used to store the editor state.
+ function CodeMirror(place, givenOptions) {
+ // Determine effective options based on given values and defaults.
+ var options = {}, defaults = CodeMirror.defaults;
+ for (var opt in defaults)
+ if (defaults.hasOwnProperty(opt))
+ options[opt] = (givenOptions && givenOptions.hasOwnProperty(opt) ? givenOptions : defaults)[opt];
+
+ // The element in which the editor lives.
+ var wrapper = document.createElement("div");
+ wrapper.className = "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : "");
+ // This mess creates the base DOM structure for the editor.
+ wrapper.innerHTML =
+ '' + // Wraps and hides input textarea
+ '
' +
+ '';
+ if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
+ // I've never seen more elegant code in my life.
+ var inputDiv = wrapper.firstChild, input = inputDiv.firstChild,
+ scroller = wrapper.lastChild, code = scroller.firstChild,
+ mover = code.firstChild, gutter = mover.firstChild, gutterText = gutter.firstChild,
+ lineSpace = gutter.nextSibling.firstChild, measure = lineSpace.firstChild,
+ cursor = measure.nextSibling, selectionDiv = cursor.nextSibling,
+ lineDiv = selectionDiv.nextSibling;
+ themeChanged();
+ // Needed to hide big blue blinking cursor on Mobile Safari
+ if (ios) input.style.width = "0px";
+ if (!webkit) lineSpace.draggable = true;
+ lineSpace.style.outline = "none";
+ if (options.tabindex != null) input.tabIndex = options.tabindex;
+ if (options.autofocus) focusInput();
+ if (!options.gutter && !options.lineNumbers) gutter.style.display = "none";
+ // Needed to handle Tab key in KHTML
+ if (khtml) inputDiv.style.height = "1px", inputDiv.style.position = "absolute";
+
+ // Check for problem with IE innerHTML not working when we have a
+ // P (or similar) parent node.
+ try { stringWidth("x"); }
+ catch (e) {
+ if (e.message.match(/runtime/i))
+ e = new Error("A CodeMirror inside a P-style element does not work in Internet Explorer. (innerHTML bug)");
+ throw e;
+ }
+
+ // Delayed object wrap timeouts, making sure only one is active. blinker holds an interval.
+ var poll = new Delayed(), highlight = new Delayed(), blinker;
+
+ // mode holds a mode API object. doc is the tree of Line objects,
+ // work an array of lines that should be parsed, and history the
+ // undo history (instance of History constructor).
+ var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), work, focused;
+ loadMode();
+ // The selection. These are always maintained to point at valid
+ // positions. Inverted is used to remember that the user is
+ // selecting bottom-to-top.
+ var sel = {from: {line: 0, ch: 0}, to: {line: 0, ch: 0}, inverted: false};
+ // Selection-related flags. shiftSelecting obviously tracks
+ // whether the user is holding shift.
+ var shiftSelecting, lastClick, lastDoubleClick, lastScrollPos = 0, draggingText,
+ overwrite = false, suppressEdits = false;
+ // Variables used by startOperation/endOperation to track what
+ // happened during the operation.
+ var updateInput, userSelChange, changes, textChanged, selectionChanged, leaveInputAlone,
+ gutterDirty, callbacks;
+ // Current visible range (may be bigger than the view window).
+ var displayOffset = 0, showingFrom = 0, showingTo = 0, lastSizeC = 0;
+ // bracketHighlighted is used to remember that a bracket has been
+ // marked.
+ var bracketHighlighted;
+ // Tracks the maximum line length so that the horizontal scrollbar
+ // can be kept static when scrolling.
+ var maxLine = "", maxWidth;
+ var tabCache = {};
+
+ // Initialize the content.
+ operation(function(){setValue(options.value || ""); updateInput = false;})();
+ var history = new History();
+
+ // Register our event handlers.
+ connect(scroller, "mousedown", operation(onMouseDown));
+ connect(scroller, "dblclick", operation(onDoubleClick));
+ connect(lineSpace, "selectstart", e_preventDefault);
+ // Gecko browsers fire contextmenu *after* opening the menu, at
+ // which point we can't mess with it anymore. Context menu is
+ // handled in onMouseDown for Gecko.
+ if (!gecko) connect(scroller, "contextmenu", onContextMenu);
+ connect(scroller, "scroll", function() {
+ lastScrollPos = scroller.scrollTop;
+ updateDisplay([]);
+ if (options.fixedGutter) gutter.style.left = scroller.scrollLeft + "px";
+ if (options.onScroll) options.onScroll(instance);
+ });
+ connect(window, "resize", function() {updateDisplay(true);});
+ connect(input, "keyup", operation(onKeyUp));
+ connect(input, "input", fastPoll);
+ connect(input, "keydown", operation(onKeyDown));
+ connect(input, "keypress", operation(onKeyPress));
+ connect(input, "focus", onFocus);
+ connect(input, "blur", onBlur);
+
+ if (options.dragDrop) {
+ connect(lineSpace, "dragstart", onDragStart);
+ function drag_(e) {
+ if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+ e_stop(e);
+ }
+ connect(scroller, "dragenter", drag_);
+ connect(scroller, "dragover", drag_);
+ connect(scroller, "drop", operation(onDrop));
+ }
+ connect(scroller, "paste", function(){focusInput(); fastPoll();});
+ connect(input, "paste", fastPoll);
+ connect(input, "cut", operation(function(){
+ if (!options.readOnly) replaceSelection("");
+ }));
+
+ // Needed to handle Tab key in KHTML
+ if (khtml) connect(code, "mouseup", function() {
+ if (document.activeElement == input) input.blur();
+ focusInput();
+ });
+
+ // IE throws unspecified error in certain cases, when
+ // trying to access activeElement before onload
+ var hasFocus; try { hasFocus = (document.activeElement == input); } catch(e) { }
+ if (hasFocus || options.autofocus) setTimeout(onFocus, 20);
+ else onBlur();
+
+ function isLine(l) {return l >= 0 && l < doc.size;}
+ // The instance object that we'll return. Mostly calls out to
+ // local functions in the CodeMirror function. Some do some extra
+ // range checking and/or clipping. operation is used to wrap the
+ // call so that changes it makes are tracked, and the display is
+ // updated afterwards.
+ var instance = wrapper.CodeMirror = {
+ getValue: getValue,
+ setValue: operation(setValue),
+ getSelection: getSelection,
+ replaceSelection: operation(replaceSelection),
+ focus: function(){window.focus(); focusInput(); onFocus(); fastPoll();},
+ setOption: function(option, value) {
+ var oldVal = options[option];
+ options[option] = value;
+ if (option == "mode" || option == "indentUnit") loadMode();
+ else if (option == "readOnly" && value == "nocursor") {onBlur(); input.blur();}
+ else if (option == "readOnly" && !value) {resetInput(true);}
+ else if (option == "theme") themeChanged();
+ else if (option == "lineWrapping" && oldVal != value) operation(wrappingChanged)();
+ else if (option == "tabSize") updateDisplay(true);
+ if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" || option == "theme") {
+ gutterChanged();
+ updateDisplay(true);
+ }
+ },
+ getOption: function(option) {return options[option];},
+ undo: operation(undo),
+ redo: operation(redo),
+ indentLine: operation(function(n, dir) {
+ if (typeof dir != "string") {
+ if (dir == null) dir = options.smartIndent ? "smart" : "prev";
+ else dir = dir ? "add" : "subtract";
+ }
+ if (isLine(n)) indentLine(n, dir);
+ }),
+ indentSelection: operation(indentSelected),
+ historySize: function() {return {undo: history.done.length, redo: history.undone.length};},
+ clearHistory: function() {history = new History();},
+ matchBrackets: operation(function(){matchBrackets(true);}),
+ getTokenAt: operation(function(pos) {
+ pos = clipPos(pos);
+ return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), pos.ch);
+ }),
+ getStateAfter: function(line) {
+ line = clipLine(line == null ? doc.size - 1: line);
+ return getStateBefore(line + 1);
+ },
+ cursorCoords: function(start, mode) {
+ if (start == null) start = sel.inverted;
+ return this.charCoords(start ? sel.from : sel.to, mode);
+ },
+ charCoords: function(pos, mode) {
+ pos = clipPos(pos);
+ if (mode == "local") return localCoords(pos, false);
+ if (mode == "div") return localCoords(pos, true);
+ return pageCoords(pos);
+ },
+ coordsChar: function(coords) {
+ var off = eltOffset(lineSpace);
+ return coordsChar(coords.x - off.left, coords.y - off.top);
+ },
+ markText: operation(markText),
+ setBookmark: setBookmark,
+ findMarksAt: findMarksAt,
+ setMarker: operation(addGutterMarker),
+ clearMarker: operation(removeGutterMarker),
+ setLineClass: operation(setLineClass),
+ hideLine: operation(function(h) {return setLineHidden(h, true);}),
+ showLine: operation(function(h) {return setLineHidden(h, false);}),
+ onDeleteLine: function(line, f) {
+ if (typeof line == "number") {
+ if (!isLine(line)) return null;
+ line = getLine(line);
+ }
+ (line.handlers || (line.handlers = [])).push(f);
+ return line;
+ },
+ lineInfo: lineInfo,
+ addWidget: function(pos, node, scroll, vert, horiz) {
+ pos = localCoords(clipPos(pos));
+ var top = pos.yBot, left = pos.x;
+ node.style.position = "absolute";
+ code.appendChild(node);
+ if (vert == "over") top = pos.y;
+ else if (vert == "near") {
+ var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()),
+ hspace = Math.max(code.clientWidth, lineSpace.clientWidth) - paddingLeft();
+ if (pos.yBot + node.offsetHeight > vspace && pos.y > node.offsetHeight)
+ top = pos.y - node.offsetHeight;
+ if (left + node.offsetWidth > hspace)
+ left = hspace - node.offsetWidth;
+ }
+ node.style.top = (top + paddingTop()) + "px";
+ node.style.left = node.style.right = "";
+ if (horiz == "right") {
+ left = code.clientWidth - node.offsetWidth;
+ node.style.right = "0px";
+ } else {
+ if (horiz == "left") left = 0;
+ else if (horiz == "middle") left = (code.clientWidth - node.offsetWidth) / 2;
+ node.style.left = (left + paddingLeft()) + "px";
+ }
+ if (scroll)
+ scrollIntoView(left, top, left + node.offsetWidth, top + node.offsetHeight);
+ },
+
+ lineCount: function() {return doc.size;},
+ clipPos: clipPos,
+ getCursor: function(start) {
+ if (start == null) start = sel.inverted;
+ return copyPos(start ? sel.from : sel.to);
+ },
+ somethingSelected: function() {return !posEq(sel.from, sel.to);},
+ setCursor: operation(function(line, ch, user) {
+ if (ch == null && typeof line.line == "number") setCursor(line.line, line.ch, user);
+ else setCursor(line, ch, user);
+ }),
+ setSelection: operation(function(from, to, user) {
+ (user ? setSelectionUser : setSelection)(clipPos(from), clipPos(to || from));
+ }),
+ getLine: function(line) {if (isLine(line)) return getLine(line).text;},
+ getLineHandle: function(line) {if (isLine(line)) return getLine(line);},
+ setLine: operation(function(line, text) {
+ if (isLine(line)) replaceRange(text, {line: line, ch: 0}, {line: line, ch: getLine(line).text.length});
+ }),
+ removeLine: operation(function(line) {
+ if (isLine(line)) replaceRange("", {line: line, ch: 0}, clipPos({line: line+1, ch: 0}));
+ }),
+ replaceRange: operation(replaceRange),
+ getRange: function(from, to) {return getRange(clipPos(from), clipPos(to));},
+
+ triggerOnKeyDown: operation(onKeyDown),
+ execCommand: function(cmd) {return commands[cmd](instance);},
+ // Stuff used by commands, probably not much use to outside code.
+ moveH: operation(moveH),
+ deleteH: operation(deleteH),
+ moveV: operation(moveV),
+ toggleOverwrite: function() {
+ if(overwrite){
+ overwrite = false;
+ cursor.className = cursor.className.replace(" CodeMirror-overwrite", "");
+ } else {
+ overwrite = true;
+ cursor.className += " CodeMirror-overwrite";
+ }
+ },
+
+ posFromIndex: function(off) {
+ var lineNo = 0, ch;
+ doc.iter(0, doc.size, function(line) {
+ var sz = line.text.length + 1;
+ if (sz > off) { ch = off; return true; }
+ off -= sz;
+ ++lineNo;
+ });
+ return clipPos({line: lineNo, ch: ch});
+ },
+ indexFromPos: function (coords) {
+ if (coords.line < 0 || coords.ch < 0) return 0;
+ var index = coords.ch;
+ doc.iter(0, coords.line, function (line) {
+ index += line.text.length + 1;
+ });
+ return index;
+ },
+ scrollTo: function(x, y) {
+ if (x != null) scroller.scrollLeft = x;
+ if (y != null) scroller.scrollTop = y;
+ updateDisplay([]);
+ },
+
+ operation: function(f){return operation(f)();},
+ compoundChange: function(f){return compoundChange(f);},
+ refresh: function(){
+ updateDisplay(true);
+ if (scroller.scrollHeight > lastScrollPos)
+ scroller.scrollTop = lastScrollPos;
+ },
+ getInputField: function(){return input;},
+ getWrapperElement: function(){return wrapper;},
+ getScrollerElement: function(){return scroller;},
+ getGutterElement: function(){return gutter;}
+ };
+
+ function getLine(n) { return getLineAt(doc, n); }
+ function updateLineHeight(line, height) {
+ gutterDirty = true;
+ var diff = height - line.height;
+ for (var n = line; n; n = n.parent) n.height += diff;
+ }
+
+ function setValue(code) {
+ var top = {line: 0, ch: 0};
+ updateLines(top, {line: doc.size - 1, ch: getLine(doc.size-1).text.length},
+ splitLines(code), top, top);
+ updateInput = true;
+ }
+ function getValue() {
+ var text = [];
+ doc.iter(0, doc.size, function(line) { text.push(line.text); });
+ return text.join("\n");
+ }
+
+ function onMouseDown(e) {
+ setShift(e_prop(e, "shiftKey"));
+ // Check whether this is a click in a widget
+ for (var n = e_target(e); n != wrapper; n = n.parentNode)
+ if (n.parentNode == code && n != mover) return;
+
+ // See if this is a click in the gutter
+ for (var n = e_target(e); n != wrapper; n = n.parentNode)
+ if (n.parentNode == gutterText) {
+ if (options.onGutterClick)
+ options.onGutterClick(instance, indexOf(gutterText.childNodes, n) + showingFrom, e);
+ return e_preventDefault(e);
+ }
+
+ var start = posFromMouse(e);
+
+ switch (e_button(e)) {
+ case 3:
+ if (gecko && !mac) onContextMenu(e);
+ return;
+ case 2:
+ if (start) setCursor(start.line, start.ch, true);
+ return;
+ }
+ // For button 1, if it was clicked inside the editor
+ // (posFromMouse returning non-null), we have to adjust the
+ // selection.
+ if (!start) {if (e_target(e) == scroller) e_preventDefault(e); return;}
+
+ if (!focused) onFocus();
+
+ var now = +new Date;
+ if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
+ e_preventDefault(e);
+ setTimeout(focusInput, 20);
+ return selectLine(start.line);
+ } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
+ lastDoubleClick = {time: now, pos: start};
+ e_preventDefault(e);
+ return selectWordAt(start);
+ } else { lastClick = {time: now, pos: start}; }
+
+ var last = start, going;
+ if (options.dragDrop && dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) &&
+ !posLess(start, sel.from) && !posLess(sel.to, start)) {
+ // Let the drag handler handle this.
+ if (webkit) lineSpace.draggable = true;
+ function dragEnd(e2) {
+ if (webkit) lineSpace.draggable = false;
+ draggingText = false;
+ up(); drop();
+ if (Math.abs(e.clientX - e2.clientX) + Math.abs(e.clientY - e2.clientY) < 10) {
+ e_preventDefault(e2);
+ setCursor(start.line, start.ch, true);
+ focusInput();
+ }
+ }
+ var up = connect(document, "mouseup", operation(dragEnd), true);
+ var drop = connect(scroller, "drop", operation(dragEnd), true);
+ draggingText = true;
+ // IE's approach to draggable
+ if (lineSpace.dragDrop) lineSpace.dragDrop();
+ return;
+ }
+ e_preventDefault(e);
+ setCursor(start.line, start.ch, true);
+
+ function extend(e) {
+ var cur = posFromMouse(e, true);
+ if (cur && !posEq(cur, last)) {
+ if (!focused) onFocus();
+ last = cur;
+ setSelectionUser(start, cur);
+ updateInput = false;
+ var visible = visibleLines();
+ if (cur.line >= visible.to || cur.line < visible.from)
+ going = setTimeout(operation(function(){extend(e);}), 150);
+ }
+ }
+
+ function done(e) {
+ clearTimeout(going);
+ var cur = posFromMouse(e);
+ if (cur) setSelectionUser(start, cur);
+ e_preventDefault(e);
+ focusInput();
+ updateInput = true;
+ move(); up();
+ }
+ var move = connect(document, "mousemove", operation(function(e) {
+ clearTimeout(going);
+ e_preventDefault(e);
+ if (!ie && !e_button(e)) done(e);
+ else extend(e);
+ }), true);
+ var up = connect(document, "mouseup", operation(done), true);
+ }
+ function onDoubleClick(e) {
+ for (var n = e_target(e); n != wrapper; n = n.parentNode)
+ if (n.parentNode == gutterText) return e_preventDefault(e);
+ var start = posFromMouse(e);
+ if (!start) return;
+ lastDoubleClick = {time: +new Date, pos: start};
+ e_preventDefault(e);
+ selectWordAt(start);
+ }
+ function onDrop(e) {
+ if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+ e.preventDefault();
+ var pos = posFromMouse(e, true), files = e.dataTransfer.files;
+ if (!pos || options.readOnly) return;
+ if (files && files.length && window.FileReader && window.File) {
+ function loadFile(file, i) {
+ var reader = new FileReader;
+ reader.onload = function() {
+ text[i] = reader.result;
+ if (++read == n) {
+ pos = clipPos(pos);
+ operation(function() {
+ var end = replaceRange(text.join(""), pos, pos);
+ setSelectionUser(pos, end);
+ })();
+ }
+ };
+ reader.readAsText(file);
+ }
+ var n = files.length, text = Array(n), read = 0;
+ for (var i = 0; i < n; ++i) loadFile(files[i], i);
+ }
+ else {
+ try {
+ var text = e.dataTransfer.getData("Text");
+ if (text) {
+ compoundChange(function() {
+ var curFrom = sel.from, curTo = sel.to;
+ setSelectionUser(pos, pos);
+ if (draggingText) replaceRange("", curFrom, curTo);
+ replaceSelection(text);
+ focusInput();
+ });
+ }
+ }
+ catch(e){}
+ }
+ }
+ function onDragStart(e) {
+ var txt = getSelection();
+ e.dataTransfer.setData("Text", txt);
+
+ // Use dummy image instead of default browsers image.
+ if (gecko || chrome) {
+ var img = document.createElement('img');
+ img.scr = 'data:image/gif;base64,R0lGODdhAgACAIAAAAAAAP///ywAAAAAAgACAAACAoRRADs='; //1x1 image
+ e.dataTransfer.setDragImage(img, 0, 0);
+ }
+ }
+
+ function doHandleBinding(bound, dropShift) {
+ if (typeof bound == "string") {
+ bound = commands[bound];
+ if (!bound) return false;
+ }
+ var prevShift = shiftSelecting;
+ try {
+ if (options.readOnly) suppressEdits = true;
+ if (dropShift) shiftSelecting = null;
+ bound(instance);
+ } catch(e) {
+ if (e != Pass) throw e;
+ return false;
+ } finally {
+ shiftSelecting = prevShift;
+ suppressEdits = false;
+ }
+ return true;
+ }
+ function handleKeyBinding(e) {
+ // Handle auto keymap transitions
+ var startMap = getKeyMap(options.keyMap), next = startMap.auto;
+ clearTimeout(maybeTransition);
+ if (next && !isModifierKey(e)) maybeTransition = setTimeout(function() {
+ if (getKeyMap(options.keyMap) == startMap) {
+ options.keyMap = (next.call ? next.call(null, instance) : next);
+ }
+ }, 50);
+
+ var name = keyNames[e_prop(e, "keyCode")], handled = false;
+ if (name == null || e.altGraphKey) return false;
+ if (e_prop(e, "altKey")) name = "Alt-" + name;
+ if (e_prop(e, "ctrlKey")) name = "Ctrl-" + name;
+ if (e_prop(e, "metaKey")) name = "Cmd-" + name;
+
+ var stopped = false;
+ function stop() { stopped = true; }
+
+ if (e_prop(e, "shiftKey")) {
+ handled = lookupKey("Shift-" + name, options.extraKeys, options.keyMap,
+ function(b) {return doHandleBinding(b, true);}, stop)
+ || lookupKey(name, options.extraKeys, options.keyMap, function(b) {
+ if (typeof b == "string" && /^go[A-Z]/.test(b)) return doHandleBinding(b);
+ }, stop);
+ } else {
+ handled = lookupKey(name, options.extraKeys, options.keyMap, doHandleBinding, stop);
+ }
+ if (stopped) handled = false;
+ if (handled) {
+ e_preventDefault(e);
+ if (ie) { e.oldKeyCode = e.keyCode; e.keyCode = 0; }
+ }
+ return handled;
+ }
+ function handleCharBinding(e, ch) {
+ var handled = lookupKey("'" + ch + "'", options.extraKeys,
+ options.keyMap, function(b) { return doHandleBinding(b, true); });
+ if (handled) e_preventDefault(e);
+ return handled;
+ }
+
+ var lastStoppedKey = null, maybeTransition;
+ function onKeyDown(e) {
+ if (!focused) onFocus();
+ if (ie && e.keyCode == 27) { e.returnValue = false; }
+ if (pollingFast) { if (readInput()) pollingFast = false; }
+ if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
+ var code = e_prop(e, "keyCode");
+ // IE does strange things with escape.
+ setShift(code == 16 || e_prop(e, "shiftKey"));
+ // First give onKeyEvent option a chance to handle this.
+ var handled = handleKeyBinding(e);
+ if (window.opera) {
+ lastStoppedKey = handled ? code : null;
+ // Opera has no cut event... we try to at least catch the key combo
+ if (!handled && code == 88 && e_prop(e, mac ? "metaKey" : "ctrlKey"))
+ replaceSelection("");
+ }
+ }
+ function onKeyPress(e) {
+ if (pollingFast) readInput();
+ if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
+ var keyCode = e_prop(e, "keyCode"), charCode = e_prop(e, "charCode");
+ if (window.opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
+ if (((window.opera && !e.which) || khtml) && handleKeyBinding(e)) return;
+ var ch = String.fromCharCode(charCode == null ? keyCode : charCode);
+ if (options.electricChars && mode.electricChars && options.smartIndent && !options.readOnly) {
+ if (mode.electricChars.indexOf(ch) > -1)
+ setTimeout(operation(function() {indentLine(sel.to.line, "smart");}), 75);
+ }
+ if (handleCharBinding(e, ch)) return;
+ fastPoll();
+ }
+ function onKeyUp(e) {
+ if (options.onKeyEvent && options.onKeyEvent(instance, addStop(e))) return;
+ if (e_prop(e, "keyCode") == 16) shiftSelecting = null;
+ }
+
+ function onFocus() {
+ if (options.readOnly == "nocursor") return;
+ if (!focused) {
+ if (options.onFocus) options.onFocus(instance);
+ focused = true;
+ if (wrapper.className.search(/\bCodeMirror-focused\b/) == -1)
+ wrapper.className += " CodeMirror-focused";
+ if (!leaveInputAlone) resetInput(true);
+ }
+ slowPoll();
+ restartBlink();
+ }
+ function onBlur() {
+ if (focused) {
+ if (options.onBlur) options.onBlur(instance);
+ focused = false;
+ if (bracketHighlighted)
+ operation(function(){
+ if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; }
+ })();
+ wrapper.className = wrapper.className.replace(" CodeMirror-focused", "");
+ }
+ clearInterval(blinker);
+ setTimeout(function() {if (!focused) shiftSelecting = null;}, 150);
+ }
+
+ // Replace the range from from to to by the strings in newText.
+ // Afterwards, set the selection to selFrom, selTo.
+ function updateLines(from, to, newText, selFrom, selTo) {
+ if (suppressEdits) return;
+ if (history) {
+ var old = [];
+ doc.iter(from.line, to.line + 1, function(line) { old.push(line.text); });
+ history.addChange(from.line, newText.length, old);
+ while (history.done.length > options.undoDepth) history.done.shift();
+ }
+ updateLinesNoUndo(from, to, newText, selFrom, selTo);
+ }
+ function unredoHelper(from, to) {
+ if (!from.length) return;
+ var set = from.pop(), out = [];
+ for (var i = set.length - 1; i >= 0; i -= 1) {
+ var change = set[i];
+ var replaced = [], end = change.start + change.added;
+ doc.iter(change.start, end, function(line) { replaced.push(line.text); });
+ out.push({start: change.start, added: change.old.length, old: replaced});
+ var pos = clipPos({line: change.start + change.old.length - 1,
+ ch: editEnd(replaced[replaced.length-1], change.old[change.old.length-1])});
+ updateLinesNoUndo({line: change.start, ch: 0}, {line: end - 1, ch: getLine(end-1).text.length}, change.old, pos, pos);
+ }
+ updateInput = true;
+ to.push(out);
+ }
+ function undo() {unredoHelper(history.done, history.undone);}
+ function redo() {unredoHelper(history.undone, history.done);}
+
+ function updateLinesNoUndo(from, to, newText, selFrom, selTo) {
+ if (suppressEdits) return;
+ var recomputeMaxLength = false, maxLineLength = maxLine.length;
+ if (!options.lineWrapping)
+ doc.iter(from.line, to.line + 1, function(line) {
+ if (line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}
+ });
+ if (from.line != to.line || newText.length > 1) gutterDirty = true;
+
+ var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line);
+ // First adjust the line structure, taking some care to leave highlighting intact.
+ if (from.ch == 0 && to.ch == 0 && newText[newText.length - 1] == "") {
+ // This is a whole-line replace. Treated specially to make
+ // sure line objects move the way they are supposed to.
+ var added = [], prevLine = null;
+ if (from.line) {
+ prevLine = getLine(from.line - 1);
+ prevLine.fixMarkEnds(lastLine);
+ } else lastLine.fixMarkStarts();
+ for (var i = 0, e = newText.length - 1; i < e; ++i)
+ added.push(Line.inheritMarks(newText[i], prevLine));
+ if (nlines) doc.remove(from.line, nlines, callbacks);
+ if (added.length) doc.insert(from.line, added);
+ } else if (firstLine == lastLine) {
+ if (newText.length == 1)
+ firstLine.replace(from.ch, to.ch, newText[0]);
+ else {
+ lastLine = firstLine.split(to.ch, newText[newText.length-1]);
+ firstLine.replace(from.ch, null, newText[0]);
+ firstLine.fixMarkEnds(lastLine);
+ var added = [];
+ for (var i = 1, e = newText.length - 1; i < e; ++i)
+ added.push(Line.inheritMarks(newText[i], firstLine));
+ added.push(lastLine);
+ doc.insert(from.line + 1, added);
+ }
+ } else if (newText.length == 1) {
+ firstLine.replace(from.ch, null, newText[0]);
+ lastLine.replace(null, to.ch, "");
+ firstLine.append(lastLine);
+ doc.remove(from.line + 1, nlines, callbacks);
+ } else {
+ var added = [];
+ firstLine.replace(from.ch, null, newText[0]);
+ lastLine.replace(null, to.ch, newText[newText.length-1]);
+ firstLine.fixMarkEnds(lastLine);
+ for (var i = 1, e = newText.length - 1; i < e; ++i)
+ added.push(Line.inheritMarks(newText[i], firstLine));
+ if (nlines > 1) doc.remove(from.line + 1, nlines - 1, callbacks);
+ doc.insert(from.line + 1, added);
+ }
+ if (options.lineWrapping) {
+ var perLine = Math.max(5, scroller.clientWidth / charWidth() - 3);
+ doc.iter(from.line, from.line + newText.length, function(line) {
+ if (line.hidden) return;
+ var guess = Math.ceil(line.text.length / perLine) || 1;
+ if (guess != line.height) updateLineHeight(line, guess);
+ });
+ } else {
+ doc.iter(from.line, from.line + newText.length, function(line) {
+ var l = line.text;
+ if (l.length > maxLineLength) {
+ maxLine = l; maxLineLength = l.length; maxWidth = null;
+ recomputeMaxLength = false;
+ }
+ });
+ if (recomputeMaxLength) {
+ maxLineLength = 0; maxLine = ""; maxWidth = null;
+ doc.iter(0, doc.size, function(line) {
+ var l = line.text;
+ if (l.length > maxLineLength) {
+ maxLineLength = l.length; maxLine = l;
+ }
+ });
+ }
+ }
+
+ // Add these lines to the work array, so that they will be
+ // highlighted. Adjust work lines if lines were added/removed.
+ var newWork = [], lendiff = newText.length - nlines - 1;
+ for (var i = 0, l = work.length; i < l; ++i) {
+ var task = work[i];
+ if (task < from.line) newWork.push(task);
+ else if (task > to.line) newWork.push(task + lendiff);
+ }
+ var hlEnd = from.line + Math.min(newText.length, 500);
+ highlightLines(from.line, hlEnd);
+ newWork.push(hlEnd);
+ work = newWork;
+ startWorker(100);
+ // Remember that these lines changed, for updating the display
+ changes.push({from: from.line, to: to.line + 1, diff: lendiff});
+ var changeObj = {from: from, to: to, text: newText};
+ if (textChanged) {
+ for (var cur = textChanged; cur.next; cur = cur.next) {}
+ cur.next = changeObj;
+ } else textChanged = changeObj;
+
+ // Update the selection
+ function updateLine(n) {return n <= Math.min(to.line, to.line + lendiff) ? n : n + lendiff;}
+ setSelection(selFrom, selTo, updateLine(sel.from.line), updateLine(sel.to.line));
+
+ // Make sure the scroll-size div has the correct height.
+ if (scroller.clientHeight)
+ code.style.height = (doc.height * textHeight() + 2 * paddingTop()) + "px";
+ }
+
+ function replaceRange(code, from, to) {
+ from = clipPos(from);
+ if (!to) to = from; else to = clipPos(to);
+ code = splitLines(code);
+ function adjustPos(pos) {
+ if (posLess(pos, from)) return pos;
+ if (!posLess(to, pos)) return end;
+ var line = pos.line + code.length - (to.line - from.line) - 1;
+ var ch = pos.ch;
+ if (pos.line == to.line)
+ ch += code[code.length-1].length - (to.ch - (to.line == from.line ? from.ch : 0));
+ return {line: line, ch: ch};
+ }
+ var end;
+ replaceRange1(code, from, to, function(end1) {
+ end = end1;
+ return {from: adjustPos(sel.from), to: adjustPos(sel.to)};
+ });
+ return end;
+ }
+ function replaceSelection(code, collapse) {
+ replaceRange1(splitLines(code), sel.from, sel.to, function(end) {
+ if (collapse == "end") return {from: end, to: end};
+ else if (collapse == "start") return {from: sel.from, to: sel.from};
+ else return {from: sel.from, to: end};
+ });
+ }
+ function replaceRange1(code, from, to, computeSel) {
+ var endch = code.length == 1 ? code[0].length + from.ch : code[code.length-1].length;
+ var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
+ updateLines(from, to, code, newSel.from, newSel.to);
+ }
+
+ function getRange(from, to) {
+ var l1 = from.line, l2 = to.line;
+ if (l1 == l2) return getLine(l1).text.slice(from.ch, to.ch);
+ var code = [getLine(l1).text.slice(from.ch)];
+ doc.iter(l1 + 1, l2, function(line) { code.push(line.text); });
+ code.push(getLine(l2).text.slice(0, to.ch));
+ return code.join("\n");
+ }
+ function getSelection() {
+ return getRange(sel.from, sel.to);
+ }
+
+ var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
+ function slowPoll() {
+ if (pollingFast) return;
+ poll.set(options.pollInterval, function() {
+ startOperation();
+ readInput();
+ if (focused) slowPoll();
+ endOperation();
+ });
+ }
+ function fastPoll() {
+ var missed = false;
+ pollingFast = true;
+ function p() {
+ startOperation();
+ var changed = readInput();
+ if (!changed && !missed) {missed = true; poll.set(60, p);}
+ else {pollingFast = false; slowPoll();}
+ endOperation();
+ }
+ poll.set(20, p);
+ }
+
+ // Previnput is a hack to work with IME. If we reset the textarea
+ // on every change, that breaks IME. So we look for changes
+ // compared to the previous content instead. (Modern browsers have
+ // events that indicate IME taking place, but these are not widely
+ // supported or compatible enough yet to rely on.)
+ var prevInput = "";
+ function readInput() {
+ if (leaveInputAlone || !focused || hasSelection(input) || options.readOnly) return false;
+ var text = input.value;
+ if (text == prevInput) return false;
+ shiftSelecting = null;
+ var same = 0, l = Math.min(prevInput.length, text.length);
+ while (same < l && prevInput[same] == text[same]) ++same;
+ if (same < prevInput.length)
+ sel.from = {line: sel.from.line, ch: sel.from.ch - (prevInput.length - same)};
+ else if (overwrite && posEq(sel.from, sel.to))
+ sel.to = {line: sel.to.line, ch: Math.min(getLine(sel.to.line).text.length, sel.to.ch + (text.length - same))};
+ replaceSelection(text.slice(same), "end");
+ prevInput = text;
+ return true;
+ }
+ function resetInput(user) {
+ if (!posEq(sel.from, sel.to)) {
+ prevInput = "";
+ input.value = getSelection();
+ selectInput(input);
+ } else if (user) prevInput = input.value = "";
+ }
+
+ function focusInput() {
+ if (options.readOnly != "nocursor") input.focus();
+ }
+
+ function scrollEditorIntoView() {
+ if (!cursor.getBoundingClientRect) return;
+ var rect = cursor.getBoundingClientRect();
+ // IE returns bogus coordinates when the instance sits inside of an iframe and the cursor is hidden
+ if (ie && rect.top == rect.bottom) return;
+ var winH = window.innerHeight || Math.max(document.body.offsetHeight, document.documentElement.offsetHeight);
+ if (rect.top < 0 || rect.bottom > winH) cursor.scrollIntoView();
+ }
+ function scrollCursorIntoView() {
+ var cursor = localCoords(sel.inverted ? sel.from : sel.to);
+ var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;
+ return scrollIntoView(x, cursor.y, x, cursor.yBot);
+ }
+ function scrollIntoView(x1, y1, x2, y2) {
+ var pl = paddingLeft(), pt = paddingTop();
+ y1 += pt; y2 += pt; x1 += pl; x2 += pl;
+ var screen = scroller.clientHeight, screentop = scroller.scrollTop, scrolled = false, result = true;
+ if (y1 < screentop) {scroller.scrollTop = Math.max(0, y1); scrolled = true;}
+ else if (y2 > screentop + screen) {scroller.scrollTop = y2 - screen; scrolled = true;}
+
+ var screenw = scroller.clientWidth, screenleft = scroller.scrollLeft;
+ var gutterw = options.fixedGutter ? gutter.clientWidth : 0;
+ var atLeft = x1 < gutterw + pl + 10;
+ if (x1 < screenleft + gutterw || atLeft) {
+ if (atLeft) x1 = 0;
+ scroller.scrollLeft = Math.max(0, x1 - 10 - gutterw);
+ scrolled = true;
+ }
+ else if (x2 > screenw + screenleft - 3) {
+ scroller.scrollLeft = x2 + 10 - screenw;
+ scrolled = true;
+ if (x2 > code.clientWidth) result = false;
+ }
+ if (scrolled && options.onScroll) options.onScroll(instance);
+ return result;
+ }
+
+ function visibleLines() {
+ var lh = textHeight(), top = scroller.scrollTop - paddingTop();
+ var fromHeight = Math.max(0, Math.floor(top / lh));
+ var toHeight = Math.ceil((top + scroller.clientHeight) / lh);
+ return {from: lineAtHeight(doc, fromHeight),
+ to: lineAtHeight(doc, toHeight)};
+ }
+ // Uses a set of changes plus the current scroll position to
+ // determine which DOM updates have to be made, and makes the
+ // updates.
+ function updateDisplay(changes, suppressCallback) {
+ if (!scroller.clientWidth) {
+ showingFrom = showingTo = displayOffset = 0;
+ return;
+ }
+ // Compute the new visible window
+ var visible = visibleLines();
+ // Bail out if the visible area is already rendered and nothing changed.
+ if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) return;
+ var from = Math.max(visible.from - 100, 0), to = Math.min(doc.size, visible.to + 100);
+ if (showingFrom < from && from - showingFrom < 20) from = showingFrom;
+ if (showingTo > to && showingTo - to < 20) to = Math.min(doc.size, showingTo);
+
+ // Create a range of theoretically intact lines, and punch holes
+ // in that using the change info.
+ var intact = changes === true ? [] :
+ computeIntact([{from: showingFrom, to: showingTo, domStart: 0}], changes);
+ // Clip off the parts that won't be visible
+ var intactLines = 0;
+ for (var i = 0; i < intact.length; ++i) {
+ var range = intact[i];
+ if (range.from < from) {range.domStart += (from - range.from); range.from = from;}
+ if (range.to > to) range.to = to;
+ if (range.from >= range.to) intact.splice(i--, 1);
+ else intactLines += range.to - range.from;
+ }
+ if (intactLines == to - from && from == showingFrom && to == showingTo) return;
+ intact.sort(function(a, b) {return a.domStart - b.domStart;});
+
+ var th = textHeight(), gutterDisplay = gutter.style.display;
+ lineDiv.style.display = "none";
+ patchDisplay(from, to, intact);
+ lineDiv.style.display = gutter.style.display = "";
+
+ // Position the mover div to align with the lines it's supposed
+ // to be showing (which will cover the visible display)
+ var different = from != showingFrom || to != showingTo || lastSizeC != scroller.clientHeight + th;
+ // This is just a bogus formula that detects when the editor is
+ // resized or the font size changes.
+ if (different) lastSizeC = scroller.clientHeight + th;
+ showingFrom = from; showingTo = to;
+ displayOffset = heightAtLine(doc, from);
+ mover.style.top = (displayOffset * th) + "px";
+ if (scroller.clientHeight)
+ code.style.height = (doc.height * th + 2 * paddingTop()) + "px";
+
+ // Since this is all rather error prone, it is honoured with the
+ // only assertion in the whole file.
+ if (lineDiv.childNodes.length != showingTo - showingFrom)
+ throw new Error("BAD PATCH! " + JSON.stringify(intact) + " size=" + (showingTo - showingFrom) +
+ " nodes=" + lineDiv.childNodes.length);
+
+ function checkHeights() {
+ maxWidth = scroller.clientWidth;
+ var curNode = lineDiv.firstChild, heightChanged = false;
+ doc.iter(showingFrom, showingTo, function(line) {
+ if (!line.hidden) {
+ var height = Math.round(curNode.offsetHeight / th) || 1;
+ if (line.height != height) {
+ updateLineHeight(line, height);
+ gutterDirty = heightChanged = true;
+ }
+ }
+ curNode = curNode.nextSibling;
+ });
+ if (heightChanged)
+ code.style.height = (doc.height * th + 2 * paddingTop()) + "px";
+ return heightChanged;
+ }
+
+ if (options.lineWrapping) {
+ checkHeights();
+ } else {
+ if (maxWidth == null) maxWidth = stringWidth(maxLine);
+ if (maxWidth > scroller.clientWidth) {
+ lineSpace.style.width = maxWidth + "px";
+ // Needed to prevent odd wrapping/hiding of widgets placed in here.
+ code.style.width = "";
+ code.style.width = scroller.scrollWidth + "px";
+ } else {
+ lineSpace.style.width = code.style.width = "";
+ }
+ }
+
+ gutter.style.display = gutterDisplay;
+ if (different || gutterDirty) {
+ // If the gutter grew in size, re-check heights. If those changed, re-draw gutter.
+ updateGutter() && options.lineWrapping && checkHeights() && updateGutter();
+ }
+ updateSelection();
+ if (!suppressCallback && options.onUpdate) options.onUpdate(instance);
+ return true;
+ }
+
+ function computeIntact(intact, changes) {
+ for (var i = 0, l = changes.length || 0; i < l; ++i) {
+ var change = changes[i], intact2 = [], diff = change.diff || 0;
+ for (var j = 0, l2 = intact.length; j < l2; ++j) {
+ var range = intact[j];
+ if (change.to <= range.from && change.diff)
+ intact2.push({from: range.from + diff, to: range.to + diff,
+ domStart: range.domStart});
+ else if (change.to <= range.from || change.from >= range.to)
+ intact2.push(range);
+ else {
+ if (change.from > range.from)
+ intact2.push({from: range.from, to: change.from, domStart: range.domStart});
+ if (change.to < range.to)
+ intact2.push({from: change.to + diff, to: range.to + diff,
+ domStart: range.domStart + (change.to - range.from)});
+ }
+ }
+ intact = intact2;
+ }
+ return intact;
+ }
+
+ function patchDisplay(from, to, intact) {
+ // The first pass removes the DOM nodes that aren't intact.
+ if (!intact.length) lineDiv.innerHTML = "";
+ else {
+ function killNode(node) {
+ var tmp = node.nextSibling;
+ node.parentNode.removeChild(node);
+ return tmp;
+ }
+ var domPos = 0, curNode = lineDiv.firstChild, n;
+ for (var i = 0; i < intact.length; ++i) {
+ var cur = intact[i];
+ while (cur.domStart > domPos) {curNode = killNode(curNode); domPos++;}
+ for (var j = 0, e = cur.to - cur.from; j < e; ++j) {curNode = curNode.nextSibling; domPos++;}
+ }
+ while (curNode) curNode = killNode(curNode);
+ }
+ // This pass fills in the lines that actually changed.
+ var nextIntact = intact.shift(), curNode = lineDiv.firstChild, j = from;
+ var scratch = document.createElement("div");
+ doc.iter(from, to, function(line) {
+ if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
+ if (!nextIntact || nextIntact.from > j) {
+ if (line.hidden) var html = scratch.innerHTML = "";
+ else {
+ var html = ''
+ + line.getHTML(makeTab) + '
';
+ // Kludge to make sure the styled element lies behind the selection (by z-index)
+ if (line.bgClassName)
+ html = '";
+ }
+ scratch.innerHTML = html;
+ lineDiv.insertBefore(scratch.firstChild, curNode);
+ } else {
+ curNode = curNode.nextSibling;
+ }
+ ++j;
+ });
+ }
+
+ function updateGutter() {
+ if (!options.gutter && !options.lineNumbers) return;
+ var hText = mover.offsetHeight, hEditor = scroller.clientHeight;
+ gutter.style.height = (hText - hEditor < 2 ? hEditor : hText) + "px";
+ var html = [], i = showingFrom, normalNode;
+ doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
+ if (line.hidden) {
+ html.push("");
+ } else {
+ var marker = line.gutterMarker;
+ var text = options.lineNumbers ? i + options.firstLineNumber : null;
+ if (marker && marker.text)
+ text = marker.text.replace("%N%", text != null ? text : "");
+ else if (text == null)
+ text = "\u00a0";
+ html.push((marker && marker.style ? '' : ""), text);
+ for (var j = 1; j < line.height; ++j) html.push("
");
+ html.push("");
+ if (!marker) normalNode = i;
+ }
+ ++i;
+ });
+ gutter.style.display = "none";
+ gutterText.innerHTML = html.join("");
+ // Make sure scrolling doesn't cause number gutter size to pop
+ if (normalNode != null) {
+ var node = gutterText.childNodes[normalNode - showingFrom];
+ var minwidth = String(doc.size).length, val = eltText(node), pad = "";
+ while (val.length + pad.length < minwidth) pad += "\u00a0";
+ if (pad) node.insertBefore(document.createTextNode(pad), node.firstChild);
+ }
+ gutter.style.display = "";
+ var resized = Math.abs((parseInt(lineSpace.style.marginLeft) || 0) - gutter.offsetWidth) > 2;
+ lineSpace.style.marginLeft = gutter.offsetWidth + "px";
+ gutterDirty = false;
+ return resized;
+ }
+ function updateSelection() {
+ var collapsed = posEq(sel.from, sel.to);
+ var fromPos = localCoords(sel.from, true);
+ var toPos = collapsed ? fromPos : localCoords(sel.to, true);
+ var headPos = sel.inverted ? fromPos : toPos, th = textHeight();
+ var wrapOff = eltOffset(wrapper), lineOff = eltOffset(lineDiv);
+ inputDiv.style.top = Math.max(0, Math.min(scroller.offsetHeight, headPos.y + lineOff.top - wrapOff.top)) + "px";
+ inputDiv.style.left = Math.max(0, Math.min(scroller.offsetWidth, headPos.x + lineOff.left - wrapOff.left)) + "px";
+ if (collapsed) {
+ cursor.style.top = headPos.y + "px";
+ cursor.style.left = (options.lineWrapping ? Math.min(headPos.x, lineSpace.offsetWidth) : headPos.x) + "px";
+ cursor.style.display = "";
+ selectionDiv.style.display = "none";
+ } else {
+ var sameLine = fromPos.y == toPos.y, html = "";
+ var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth;
+ var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight;
+ function add(left, top, right, height) {
+ var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px"
+ : "right: " + right + "px";
+ html += '';
+ }
+ if (sel.from.ch && fromPos.y >= 0) {
+ var right = sameLine ? clientWidth - toPos.x : 0;
+ add(fromPos.x, fromPos.y, right, th);
+ }
+ var middleStart = Math.max(0, fromPos.y + (sel.from.ch ? th : 0));
+ var middleHeight = Math.min(toPos.y, clientHeight) - middleStart;
+ if (middleHeight > 0.2 * th)
+ add(0, middleStart, 0, middleHeight);
+ if ((!sameLine || !sel.from.ch) && toPos.y < clientHeight - .5 * th)
+ add(0, toPos.y, clientWidth - toPos.x, th);
+ selectionDiv.innerHTML = html;
+ cursor.style.display = "none";
+ selectionDiv.style.display = "";
+ }
+ }
+
+ function setShift(val) {
+ if (val) shiftSelecting = shiftSelecting || (sel.inverted ? sel.to : sel.from);
+ else shiftSelecting = null;
+ }
+ function setSelectionUser(from, to) {
+ var sh = shiftSelecting && clipPos(shiftSelecting);
+ if (sh) {
+ if (posLess(sh, from)) from = sh;
+ else if (posLess(to, sh)) to = sh;
+ }
+ setSelection(from, to);
+ userSelChange = true;
+ }
+ // Update the selection. Last two args are only used by
+ // updateLines, since they have to be expressed in the line
+ // numbers before the update.
+ function setSelection(from, to, oldFrom, oldTo) {
+ goalColumn = null;
+ if (oldFrom == null) {oldFrom = sel.from.line; oldTo = sel.to.line;}
+ if (posEq(sel.from, from) && posEq(sel.to, to)) return;
+ if (posLess(to, from)) {var tmp = to; to = from; from = tmp;}
+
+ // Skip over hidden lines.
+ if (from.line != oldFrom) {
+ var from1 = skipHidden(from, oldFrom, sel.from.ch);
+ // If there is no non-hidden line left, force visibility on current line
+ if (!from1) setLineHidden(from.line, false);
+ else from = from1;
+ }
+ if (to.line != oldTo) to = skipHidden(to, oldTo, sel.to.ch);
+
+ if (posEq(from, to)) sel.inverted = false;
+ else if (posEq(from, sel.to)) sel.inverted = false;
+ else if (posEq(to, sel.from)) sel.inverted = true;
+
+ if (options.autoClearEmptyLines && posEq(sel.from, sel.to)) {
+ var head = sel.inverted ? from : to;
+ if (head.line != sel.from.line && sel.from.line < doc.size) {
+ var oldLine = getLine(sel.from.line);
+ if (/^\s+$/.test(oldLine.text))
+ setTimeout(operation(function() {
+ if (oldLine.parent && /^\s+$/.test(oldLine.text)) {
+ var no = lineNo(oldLine);
+ replaceRange("", {line: no, ch: 0}, {line: no, ch: oldLine.text.length});
+ }
+ }, 10));
+ }
+ }
+
+ sel.from = from; sel.to = to;
+ selectionChanged = true;
+ }
+ function skipHidden(pos, oldLine, oldCh) {
+ function getNonHidden(dir) {
+ var lNo = pos.line + dir, end = dir == 1 ? doc.size : -1;
+ while (lNo != end) {
+ var line = getLine(lNo);
+ if (!line.hidden) {
+ var ch = pos.ch;
+ if (toEnd || ch > oldCh || ch > line.text.length) ch = line.text.length;
+ return {line: lNo, ch: ch};
+ }
+ lNo += dir;
+ }
+ }
+ var line = getLine(pos.line);
+ var toEnd = pos.ch == line.text.length && pos.ch != oldCh;
+ if (!line.hidden) return pos;
+ if (pos.line >= oldLine) return getNonHidden(1) || getNonHidden(-1);
+ else return getNonHidden(-1) || getNonHidden(1);
+ }
+ function setCursor(line, ch, user) {
+ var pos = clipPos({line: line, ch: ch || 0});
+ (user ? setSelectionUser : setSelection)(pos, pos);
+ }
+
+ function clipLine(n) {return Math.max(0, Math.min(n, doc.size-1));}
+ function clipPos(pos) {
+ if (pos.line < 0) return {line: 0, ch: 0};
+ if (pos.line >= doc.size) return {line: doc.size-1, ch: getLine(doc.size-1).text.length};
+ var ch = pos.ch, linelen = getLine(pos.line).text.length;
+ if (ch == null || ch > linelen) return {line: pos.line, ch: linelen};
+ else if (ch < 0) return {line: pos.line, ch: 0};
+ else return pos;
+ }
+
+ function findPosH(dir, unit) {
+ var end = sel.inverted ? sel.from : sel.to, line = end.line, ch = end.ch;
+ var lineObj = getLine(line);
+ function findNextLine() {
+ for (var l = line + dir, e = dir < 0 ? -1 : doc.size; l != e; l += dir) {
+ var lo = getLine(l);
+ if (!lo.hidden) { line = l; lineObj = lo; return true; }
+ }
+ }
+ function moveOnce(boundToLine) {
+ if (ch == (dir < 0 ? 0 : lineObj.text.length)) {
+ if (!boundToLine && findNextLine()) ch = dir < 0 ? lineObj.text.length : 0;
+ else return false;
+ } else ch += dir;
+ return true;
+ }
+ if (unit == "char") moveOnce();
+ else if (unit == "column") moveOnce(true);
+ else if (unit == "word") {
+ var sawWord = false;
+ for (;;) {
+ if (dir < 0) if (!moveOnce()) break;
+ if (isWordChar(lineObj.text.charAt(ch))) sawWord = true;
+ else if (sawWord) {if (dir < 0) {dir = 1; moveOnce();} break;}
+ if (dir > 0) if (!moveOnce()) break;
+ }
+ }
+ return {line: line, ch: ch};
+ }
+ function moveH(dir, unit) {
+ var pos = dir < 0 ? sel.from : sel.to;
+ if (shiftSelecting || posEq(sel.from, sel.to)) pos = findPosH(dir, unit);
+ setCursor(pos.line, pos.ch, true);
+ }
+ function deleteH(dir, unit) {
+ if (!posEq(sel.from, sel.to)) replaceRange("", sel.from, sel.to);
+ else if (dir < 0) replaceRange("", findPosH(dir, unit), sel.to);
+ else replaceRange("", sel.from, findPosH(dir, unit));
+ userSelChange = true;
+ }
+ var goalColumn = null;
+ function moveV(dir, unit) {
+ var dist = 0, pos = localCoords(sel.inverted ? sel.from : sel.to, true);
+ if (goalColumn != null) pos.x = goalColumn;
+ if (unit == "page") dist = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
+ else if (unit == "line") dist = textHeight();
+ var target = coordsChar(pos.x, pos.y + dist * dir + 2);
+ if (unit == "page") scroller.scrollTop += localCoords(target, true).y - pos.y;
+ setCursor(target.line, target.ch, true);
+ goalColumn = pos.x;
+ }
+
+ function selectWordAt(pos) {
+ var line = getLine(pos.line).text;
+ var start = pos.ch, end = pos.ch;
+ while (start > 0 && isWordChar(line.charAt(start - 1))) --start;
+ while (end < line.length && isWordChar(line.charAt(end))) ++end;
+ setSelectionUser({line: pos.line, ch: start}, {line: pos.line, ch: end});
+ }
+ function selectLine(line) {
+ setSelectionUser({line: line, ch: 0}, clipPos({line: line + 1, ch: 0}));
+ }
+ function indentSelected(mode) {
+ if (posEq(sel.from, sel.to)) return indentLine(sel.from.line, mode);
+ var e = sel.to.line - (sel.to.ch ? 0 : 1);
+ for (var i = sel.from.line; i <= e; ++i) indentLine(i, mode);
+ }
+
+ function indentLine(n, how) {
+ if (!how) how = "add";
+ if (how == "smart") {
+ if (!mode.indent) how = "prev";
+ else var state = getStateBefore(n);
+ }
+
+ var line = getLine(n), curSpace = line.indentation(options.tabSize),
+ curSpaceString = line.text.match(/^\s*/)[0], indentation;
+ if (how == "prev") {
+ if (n) indentation = getLine(n-1).indentation(options.tabSize);
+ else indentation = 0;
+ }
+ else if (how == "smart") indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+ else if (how == "add") indentation = curSpace + options.indentUnit;
+ else if (how == "subtract") indentation = curSpace - options.indentUnit;
+ indentation = Math.max(0, indentation);
+ var diff = indentation - curSpace;
+
+ if (!diff) {
+ if (sel.from.line != n && sel.to.line != n) return;
+ var indentString = curSpaceString;
+ }
+ else {
+ var indentString = "", pos = 0;
+ if (options.indentWithTabs)
+ for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
+ while (pos < indentation) {++pos; indentString += " ";}
+ }
+
+ replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
+ }
+
+ function loadMode() {
+ mode = CodeMirror.getMode(options, options.mode);
+ doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
+ work = [0];
+ startWorker();
+ }
+ function gutterChanged() {
+ var visible = options.gutter || options.lineNumbers;
+ gutter.style.display = visible ? "" : "none";
+ if (visible) gutterDirty = true;
+ else lineDiv.parentNode.style.marginLeft = 0;
+ }
+ function wrappingChanged(from, to) {
+ if (options.lineWrapping) {
+ wrapper.className += " CodeMirror-wrap";
+ var perLine = scroller.clientWidth / charWidth() - 3;
+ doc.iter(0, doc.size, function(line) {
+ if (line.hidden) return;
+ var guess = Math.ceil(line.text.length / perLine) || 1;
+ if (guess != 1) updateLineHeight(line, guess);
+ });
+ lineSpace.style.width = code.style.width = "";
+ } else {
+ wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
+ maxWidth = null; maxLine = "";
+ doc.iter(0, doc.size, function(line) {
+ if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
+ if (line.text.length > maxLine.length) maxLine = line.text;
+ });
+ }
+ changes.push({from: 0, to: doc.size});
+ }
+ function makeTab(col) {
+ var w = options.tabSize - col % options.tabSize, cached = tabCache[w];
+ if (cached) return cached;
+ for (var str = '', i = 0; i < w; ++i) str += " ";
+ return (tabCache[w] = {html: str + "", width: w});
+ }
+ function themeChanged() {
+ scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") +
+ options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+ }
+
+ function TextMarker() { this.set = []; }
+ TextMarker.prototype.clear = operation(function() {
+ var min = Infinity, max = -Infinity;
+ for (var i = 0, e = this.set.length; i < e; ++i) {
+ var line = this.set[i], mk = line.marked;
+ if (!mk || !line.parent) continue;
+ var lineN = lineNo(line);
+ min = Math.min(min, lineN); max = Math.max(max, lineN);
+ for (var j = 0; j < mk.length; ++j)
+ if (mk[j].marker == this) mk.splice(j--, 1);
+ }
+ if (min != Infinity)
+ changes.push({from: min, to: max + 1});
+ });
+ TextMarker.prototype.find = function() {
+ var from, to;
+ for (var i = 0, e = this.set.length; i < e; ++i) {
+ var line = this.set[i], mk = line.marked;
+ for (var j = 0; j < mk.length; ++j) {
+ var mark = mk[j];
+ if (mark.marker == this) {
+ if (mark.from != null || mark.to != null) {
+ var found = lineNo(line);
+ if (found != null) {
+ if (mark.from != null) from = {line: found, ch: mark.from};
+ if (mark.to != null) to = {line: found, ch: mark.to};
+ }
+ }
+ }
+ }
+ }
+ return {from: from, to: to};
+ };
+
+ function markText(from, to, className) {
+ from = clipPos(from); to = clipPos(to);
+ var tm = new TextMarker();
+ if (!posLess(from, to)) return tm;
+ function add(line, from, to, className) {
+ getLine(line).addMark(new MarkedText(from, to, className, tm));
+ }
+ if (from.line == to.line) add(from.line, from.ch, to.ch, className);
+ else {
+ add(from.line, from.ch, null, className);
+ for (var i = from.line + 1, e = to.line; i < e; ++i)
+ add(i, null, null, className);
+ add(to.line, null, to.ch, className);
+ }
+ changes.push({from: from.line, to: to.line + 1});
+ return tm;
+ }
+
+ function setBookmark(pos) {
+ pos = clipPos(pos);
+ var bm = new Bookmark(pos.ch);
+ getLine(pos.line).addMark(bm);
+ return bm;
+ }
+
+ function findMarksAt(pos) {
+ pos = clipPos(pos);
+ var markers = [], marked = getLine(pos.line).marked;
+ if (!marked) return markers;
+ for (var i = 0, e = marked.length; i < e; ++i) {
+ var m = marked[i];
+ if ((m.from == null || m.from <= pos.ch) &&
+ (m.to == null || m.to >= pos.ch))
+ markers.push(m.marker || m);
+ }
+ return markers;
+ }
+
+ function addGutterMarker(line, text, className) {
+ if (typeof line == "number") line = getLine(clipLine(line));
+ line.gutterMarker = {text: text, style: className};
+ gutterDirty = true;
+ return line;
+ }
+ function removeGutterMarker(line) {
+ if (typeof line == "number") line = getLine(clipLine(line));
+ line.gutterMarker = null;
+ gutterDirty = true;
+ }
+
+ function changeLine(handle, op) {
+ var no = handle, line = handle;
+ if (typeof handle == "number") line = getLine(clipLine(handle));
+ else no = lineNo(handle);
+ if (no == null) return null;
+ if (op(line, no)) changes.push({from: no, to: no + 1});
+ else return null;
+ return line;
+ }
+ function setLineClass(handle, className, bgClassName) {
+ return changeLine(handle, function(line) {
+ if (line.className != className || line.bgClassName != bgClassName) {
+ line.className = className;
+ line.bgClassName = bgClassName;
+ return true;
+ }
+ });
+ }
+ function setLineHidden(handle, hidden) {
+ return changeLine(handle, function(line, no) {
+ if (line.hidden != hidden) {
+ line.hidden = hidden;
+ updateLineHeight(line, hidden ? 0 : 1);
+ var fline = sel.from.line, tline = sel.to.line;
+ if (hidden && (fline == no || tline == no)) {
+ var from = fline == no ? skipHidden({line: fline, ch: 0}, fline, 0) : sel.from;
+ var to = tline == no ? skipHidden({line: tline, ch: 0}, tline, 0) : sel.to;
+ // Can't hide the last visible line, we'd have no place to put the cursor
+ if (!to) return;
+ setSelection(from, to);
+ }
+ return (gutterDirty = true);
+ }
+ });
+ }
+
+ function lineInfo(line) {
+ if (typeof line == "number") {
+ if (!isLine(line)) return null;
+ var n = line;
+ line = getLine(line);
+ if (!line) return null;
+ }
+ else {
+ var n = lineNo(line);
+ if (n == null) return null;
+ }
+ var marker = line.gutterMarker;
+ return {line: n, handle: line, text: line.text, markerText: marker && marker.text,
+ markerClass: marker && marker.style, lineClass: line.className, bgClass: line.bgClassName};
+ }
+
+ function stringWidth(str) {
+ measure.innerHTML = "x
";
+ measure.firstChild.firstChild.firstChild.nodeValue = str;
+ return measure.firstChild.firstChild.offsetWidth || 10;
+ }
+ // These are used to go from pixel positions to character
+ // positions, taking varying character widths into account.
+ function charFromX(line, x) {
+ if (x <= 0) return 0;
+ var lineObj = getLine(line), text = lineObj.text;
+ function getX(len) {
+ return measureLine(lineObj, len).left;
+ }
+ var from = 0, fromX = 0, to = text.length, toX;
+ // Guess a suitable upper bound for our search.
+ var estimated = Math.min(to, Math.ceil(x / charWidth()));
+ for (;;) {
+ var estX = getX(estimated);
+ if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
+ else {toX = estX; to = estimated; break;}
+ }
+ if (x > toX) return to;
+ // Try to guess a suitable lower bound as well.
+ estimated = Math.floor(to * 0.8); estX = getX(estimated);
+ if (estX < x) {from = estimated; fromX = estX;}
+ // Do a binary search between these bounds.
+ for (;;) {
+ if (to - from <= 1) return (toX - x > x - fromX) ? from : to;
+ var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
+ if (middleX > x) {to = middle; toX = middleX;}
+ else {from = middle; fromX = middleX;}
+ }
+ }
+
+ var tempId = "CodeMirror-temp-" + Math.floor(Math.random() * 0xffffff).toString(16);
+ function measureLine(line, ch) {
+ if (ch == 0) return {top: 0, left: 0};
+ var wbr = options.lineWrapping && ch < line.text.length &&
+ spanAffectsWrapping.test(line.text.slice(ch - 1, ch + 1));
+ measure.innerHTML = "" + line.getHTML(makeTab, ch, tempId, wbr) + "
";
+ var elt = document.getElementById(tempId);
+ var top = elt.offsetTop, left = elt.offsetLeft;
+ // Older IEs report zero offsets for spans directly after a wrap
+ if (ie && top == 0 && left == 0) {
+ var backup = document.createElement("span");
+ backup.innerHTML = "x";
+ elt.parentNode.insertBefore(backup, elt.nextSibling);
+ top = backup.offsetTop;
+ }
+ return {top: top, left: left};
+ }
+ function localCoords(pos, inLineWrap) {
+ var x, lh = textHeight(), y = lh * (heightAtLine(doc, pos.line) - (inLineWrap ? displayOffset : 0));
+ if (pos.ch == 0) x = 0;
+ else {
+ var sp = measureLine(getLine(pos.line), pos.ch);
+ x = sp.left;
+ if (options.lineWrapping) y += Math.max(0, sp.top);
+ }
+ return {x: x, y: y, yBot: y + lh};
+ }
+ // Coords must be lineSpace-local
+ function coordsChar(x, y) {
+ if (y < 0) y = 0;
+ var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
+ var lineNo = lineAtHeight(doc, heightPos);
+ if (lineNo >= doc.size) return {line: doc.size - 1, ch: getLine(doc.size - 1).text.length};
+ var lineObj = getLine(lineNo), text = lineObj.text;
+ var tw = options.lineWrapping, innerOff = tw ? heightPos - heightAtLine(doc, lineNo) : 0;
+ if (x <= 0 && innerOff == 0) return {line: lineNo, ch: 0};
+ function getX(len) {
+ var sp = measureLine(lineObj, len);
+ if (tw) {
+ var off = Math.round(sp.top / th);
+ return Math.max(0, sp.left + (off - innerOff) * scroller.clientWidth);
+ }
+ return sp.left;
+ }
+ var from = 0, fromX = 0, to = text.length, toX;
+ // Guess a suitable upper bound for our search.
+ var estimated = Math.min(to, Math.ceil((x + innerOff * scroller.clientWidth * .9) / cw));
+ for (;;) {
+ var estX = getX(estimated);
+ if (estX <= x && estimated < to) estimated = Math.min(to, Math.ceil(estimated * 1.2));
+ else {toX = estX; to = estimated; break;}
+ }
+ if (x > toX) return {line: lineNo, ch: to};
+ // Try to guess a suitable lower bound as well.
+ estimated = Math.floor(to * 0.8); estX = getX(estimated);
+ if (estX < x) {from = estimated; fromX = estX;}
+ // Do a binary search between these bounds.
+ for (;;) {
+ if (to - from <= 1) return {line: lineNo, ch: (toX - x > x - fromX) ? from : to};
+ var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
+ if (middleX > x) {to = middle; toX = middleX;}
+ else {from = middle; fromX = middleX;}
+ }
+ }
+ function pageCoords(pos) {
+ var local = localCoords(pos, true), off = eltOffset(lineSpace);
+ return {x: off.left + local.x, y: off.top + local.y, yBot: off.top + local.yBot};
+ }
+
+ var cachedHeight, cachedHeightFor, measureText;
+ function textHeight() {
+ if (measureText == null) {
+ measureText = "";
+ for (var i = 0; i < 49; ++i) measureText += "x
";
+ measureText += "x
";
+ }
+ var offsetHeight = lineDiv.clientHeight;
+ if (offsetHeight == cachedHeightFor) return cachedHeight;
+ cachedHeightFor = offsetHeight;
+ measure.innerHTML = measureText;
+ cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
+ measure.innerHTML = "";
+ return cachedHeight;
+ }
+ var cachedWidth, cachedWidthFor = 0;
+ function charWidth() {
+ if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
+ cachedWidthFor = scroller.clientWidth;
+ return (cachedWidth = stringWidth("x"));
+ }
+ function paddingTop() {return lineSpace.offsetTop;}
+ function paddingLeft() {return lineSpace.offsetLeft;}
+
+ function posFromMouse(e, liberal) {
+ var offW = eltOffset(scroller, true), x, y;
+ // Fails unpredictably on IE[67] when mouse is dragged around quickly.
+ try { x = e.clientX; y = e.clientY; } catch (e) { return null; }
+ // This is a mess of a heuristic to try and determine whether a
+ // scroll-bar was clicked or not, and to return null if one was
+ // (and !liberal).
+ if (!liberal && (x - offW.left > scroller.clientWidth || y - offW.top > scroller.clientHeight))
+ return null;
+ var offL = eltOffset(lineSpace, true);
+ return coordsChar(x - offL.left, y - offL.top);
+ }
+ function onContextMenu(e) {
+ var pos = posFromMouse(e), scrollPos = scroller.scrollTop;
+ if (!pos || window.opera) return; // Opera is difficult.
+ if (posEq(sel.from, sel.to) || posLess(pos, sel.from) || !posLess(pos, sel.to))
+ operation(setCursor)(pos.line, pos.ch);
+
+ var oldCSS = input.style.cssText;
+ inputDiv.style.position = "absolute";
+ input.style.cssText = "position: fixed; width: 30px; height: 30px; top: " + (e.clientY - 5) +
+ "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: white; " +
+ "border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";
+ leaveInputAlone = true;
+ var val = input.value = getSelection();
+ focusInput();
+ selectInput(input);
+ function rehide() {
+ var newVal = splitLines(input.value).join("\n");
+ if (newVal != val) operation(replaceSelection)(newVal, "end");
+ inputDiv.style.position = "relative";
+ input.style.cssText = oldCSS;
+ if (ie_lt9) scroller.scrollTop = scrollPos;
+ leaveInputAlone = false;
+ resetInput(true);
+ slowPoll();
+ }
+
+ if (gecko) {
+ e_stop(e);
+ var mouseup = connect(window, "mouseup", function() {
+ mouseup();
+ setTimeout(rehide, 20);
+ }, true);
+ } else {
+ setTimeout(rehide, 50);
+ }
+ }
+
+ // Cursor-blinking
+ function restartBlink() {
+ clearInterval(blinker);
+ var on = true;
+ cursor.style.visibility = "";
+ blinker = setInterval(function() {
+ cursor.style.visibility = (on = !on) ? "" : "hidden";
+ }, 650);
+ }
+
+ var matching = {"(": ")>", ")": "(<", "[": "]>", "]": "[<", "{": "}>", "}": "{<"};
+ function matchBrackets(autoclear) {
+ var head = sel.inverted ? sel.from : sel.to, line = getLine(head.line), pos = head.ch - 1;
+ var match = (pos >= 0 && matching[line.text.charAt(pos)]) || matching[line.text.charAt(++pos)];
+ if (!match) return;
+ var ch = match.charAt(0), forward = match.charAt(1) == ">", d = forward ? 1 : -1, st = line.styles;
+ for (var off = pos + 1, i = 0, e = st.length; i < e; i+=2)
+ if ((off -= st[i].length) <= 0) {var style = st[i+1]; break;}
+
+ var stack = [line.text.charAt(pos)], re = /[(){}[\]]/;
+ function scan(line, from, to) {
+ if (!line.text) return;
+ var st = line.styles, pos = forward ? 0 : line.text.length - 1, cur;
+ for (var i = forward ? 0 : st.length - 2, e = forward ? st.length : -2; i != e; i += 2*d) {
+ var text = st[i];
+ if (st[i+1] != null && st[i+1] != style) {pos += d * text.length; continue;}
+ for (var j = forward ? 0 : text.length - 1, te = forward ? text.length : -1; j != te; j += d, pos+=d) {
+ if (pos >= from && pos < to && re.test(cur = text.charAt(j))) {
+ var match = matching[cur];
+ if (match.charAt(1) == ">" == forward) stack.push(cur);
+ else if (stack.pop() != match.charAt(0)) return {pos: pos, match: false};
+ else if (!stack.length) return {pos: pos, match: true};
+ }
+ }
+ }
+ }
+ for (var i = head.line, e = forward ? Math.min(i + 100, doc.size) : Math.max(-1, i - 100); i != e; i+=d) {
+ var line = getLine(i), first = i == head.line;
+ var found = scan(line, first && forward ? pos + 1 : 0, first && !forward ? pos : line.text.length);
+ if (found) break;
+ }
+ if (!found) found = {pos: null, match: false};
+ var style = found.match ? "CodeMirror-matchingbracket" : "CodeMirror-nonmatchingbracket";
+ var one = markText({line: head.line, ch: pos}, {line: head.line, ch: pos+1}, style),
+ two = found.pos != null && markText({line: i, ch: found.pos}, {line: i, ch: found.pos + 1}, style);
+ var clear = operation(function(){one.clear(); two && two.clear();});
+ if (autoclear) setTimeout(clear, 800);
+ else bracketHighlighted = clear;
+ }
+
+ // Finds the line to start with when starting a parse. Tries to
+ // find a line with a stateAfter, so that it can start with a
+ // valid state. If that fails, it returns the line with the
+ // smallest indentation, which tends to need the least context to
+ // parse correctly.
+ function findStartLine(n) {
+ var minindent, minline;
+ for (var search = n, lim = n - 40; search > lim; --search) {
+ if (search == 0) return 0;
+ var line = getLine(search-1);
+ if (line.stateAfter) return search;
+ var indented = line.indentation(options.tabSize);
+ if (minline == null || minindent > indented) {
+ minline = search - 1;
+ minindent = indented;
+ }
+ }
+ return minline;
+ }
+ function getStateBefore(n) {
+ var start = findStartLine(n), state = start && getLine(start-1).stateAfter;
+ if (!state) state = startState(mode);
+ else state = copyState(mode, state);
+ doc.iter(start, n, function(line) {
+ line.highlight(mode, state, options.tabSize);
+ line.stateAfter = copyState(mode, state);
+ });
+ if (start < n) changes.push({from: start, to: n});
+ if (n < doc.size && !getLine(n).stateAfter) work.push(n);
+ return state;
+ }
+ function highlightLines(start, end) {
+ var state = getStateBefore(start);
+ doc.iter(start, end, function(line) {
+ line.highlight(mode, state, options.tabSize);
+ line.stateAfter = copyState(mode, state);
+ });
+ }
+ function highlightWorker() {
+ var end = +new Date + options.workTime;
+ var foundWork = work.length;
+ while (work.length) {
+ if (!getLine(showingFrom).stateAfter) var task = showingFrom;
+ else var task = work.pop();
+ if (task >= doc.size) continue;
+ var start = findStartLine(task), state = start && getLine(start-1).stateAfter;
+ if (state) state = copyState(mode, state);
+ else state = startState(mode);
+
+ var unchanged = 0, compare = mode.compareStates, realChange = false,
+ i = start, bail = false;
+ doc.iter(i, doc.size, function(line) {
+ var hadState = line.stateAfter;
+ if (+new Date > end) {
+ work.push(i);
+ startWorker(options.workDelay);
+ if (realChange) changes.push({from: task, to: i + 1});
+ return (bail = true);
+ }
+ var changed = line.highlight(mode, state, options.tabSize);
+ if (changed) realChange = true;
+ line.stateAfter = copyState(mode, state);
+ var done = null;
+ if (compare) {
+ var same = hadState && compare(hadState, state);
+ if (same != Pass) done = !!same;
+ }
+ if (done == null) {
+ if (changed !== false || !hadState) unchanged = 0;
+ else if (++unchanged > 3 && (!mode.indent || mode.indent(hadState, "") == mode.indent(state, "")))
+ done = true;
+ }
+ if (done) return true;
+ ++i;
+ });
+ if (bail) return;
+ if (realChange) changes.push({from: task, to: i + 1});
+ }
+ if (foundWork && options.onHighlightComplete)
+ options.onHighlightComplete(instance);
+ }
+ function startWorker(time) {
+ if (!work.length) return;
+ highlight.set(time, operation(highlightWorker));
+ }
+
+ // Operations are used to wrap changes in such a way that each
+ // change won't have to update the cursor and display (which would
+ // be awkward, slow, and error-prone), but instead updates are
+ // batched and then all combined and executed at once.
+ function startOperation() {
+ updateInput = userSelChange = textChanged = null;
+ changes = []; selectionChanged = false; callbacks = [];
+ }
+ function endOperation() {
+ var reScroll = false, updated;
+ if (selectionChanged) reScroll = !scrollCursorIntoView();
+ if (changes.length) updated = updateDisplay(changes, true);
+ else {
+ if (selectionChanged) updateSelection();
+ if (gutterDirty) updateGutter();
+ }
+ if (reScroll) scrollCursorIntoView();
+ if (selectionChanged) {scrollEditorIntoView(); restartBlink();}
+
+ if (focused && !leaveInputAlone &&
+ (updateInput === true || (updateInput !== false && selectionChanged)))
+ resetInput(userSelChange);
+
+ if (selectionChanged && options.matchBrackets)
+ setTimeout(operation(function() {
+ if (bracketHighlighted) {bracketHighlighted(); bracketHighlighted = null;}
+ if (posEq(sel.from, sel.to)) matchBrackets(false);
+ }), 20);
+ var tc = textChanged, cbs = callbacks; // these can be reset by callbacks
+ if (selectionChanged && options.onCursorActivity)
+ options.onCursorActivity(instance);
+ if (tc && options.onChange && instance)
+ options.onChange(instance, tc);
+ for (var i = 0; i < cbs.length; ++i) cbs[i](instance);
+ if (updated && options.onUpdate) options.onUpdate(instance);
+ }
+ var nestedOperation = 0;
+ function operation(f) {
+ return function() {
+ if (!nestedOperation++) startOperation();
+ try {var result = f.apply(this, arguments);}
+ finally {if (!--nestedOperation) endOperation();}
+ return result;
+ };
+ }
+
+ function compoundChange(f) {
+ history.startCompound();
+ try { return f(); } finally { history.endCompound(); }
+ }
+
+ for (var ext in extensions)
+ if (extensions.propertyIsEnumerable(ext) &&
+ !instance.propertyIsEnumerable(ext))
+ instance[ext] = extensions[ext];
+ return instance;
+ } // (end of function CodeMirror)
+
+ // The default configuration options.
+ CodeMirror.defaults = {
+ value: "",
+ mode: null,
+ theme: "default",
+ indentUnit: 2,
+ indentWithTabs: false,
+ smartIndent: true,
+ tabSize: 4,
+ keyMap: "default",
+ extraKeys: null,
+ electricChars: true,
+ autoClearEmptyLines: false,
+ onKeyEvent: null,
+ onDragEvent: null,
+ lineWrapping: false,
+ lineNumbers: false,
+ gutter: false,
+ fixedGutter: false,
+ firstLineNumber: 1,
+ readOnly: false,
+ dragDrop: true,
+ onChange: null,
+ onCursorActivity: null,
+ onGutterClick: null,
+ onHighlightComplete: null,
+ onUpdate: null,
+ onFocus: null, onBlur: null, onScroll: null,
+ matchBrackets: false,
+ workTime: 100,
+ workDelay: 200,
+ pollInterval: 100,
+ undoDepth: 40,
+ tabindex: null,
+ autofocus: null
+ };
+
+ var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobile\/\w+/.test(navigator.userAgent);
+ var mac = ios || /Mac/.test(navigator.platform);
+ var win = /Win/.test(navigator.platform);
+
+ // Known modes, by name and by MIME
+ var modes = CodeMirror.modes = {}, mimeModes = CodeMirror.mimeModes = {};
+ CodeMirror.defineMode = function(name, mode) {
+ if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;
+ if (arguments.length > 2) {
+ mode.dependencies = [];
+ for (var i = 2; i < arguments.length; ++i) mode.dependencies.push(arguments[i]);
+ }
+ modes[name] = mode;
+ };
+ CodeMirror.defineMIME = function(mime, spec) {
+ mimeModes[mime] = spec;
+ };
+ CodeMirror.resolveMode = function(spec) {
+ if (typeof spec == "string" && mimeModes.hasOwnProperty(spec))
+ spec = mimeModes[spec];
+ else if (typeof spec == "string" && /^[\w\-]+\/[\w\-]+\+xml$/.test(spec))
+ return CodeMirror.resolveMode("application/xml");
+ if (typeof spec == "string") return {name: spec};
+ else return spec || {name: "null"};
+ };
+ CodeMirror.getMode = function(options, spec) {
+ var spec = CodeMirror.resolveMode(spec);
+ var mfactory = modes[spec.name];
+ if (!mfactory) return CodeMirror.getMode(options, "text/plain");
+ return mfactory(options, spec);
+ };
+ CodeMirror.listModes = function() {
+ var list = [];
+ for (var m in modes)
+ if (modes.propertyIsEnumerable(m)) list.push(m);
+ return list;
+ };
+ CodeMirror.listMIMEs = function() {
+ var list = [];
+ for (var m in mimeModes)
+ if (mimeModes.propertyIsEnumerable(m)) list.push({mime: m, mode: mimeModes[m]});
+ return list;
+ };
+
+ var extensions = CodeMirror.extensions = {};
+ CodeMirror.defineExtension = function(name, func) {
+ extensions[name] = func;
+ };
+
+ var commands = CodeMirror.commands = {
+ selectAll: function(cm) {cm.setSelection({line: 0, ch: 0}, {line: cm.lineCount() - 1});},
+ killLine: function(cm) {
+ var from = cm.getCursor(true), to = cm.getCursor(false), sel = !posEq(from, to);
+ if (!sel && cm.getLine(from.line).length == from.ch) cm.replaceRange("", from, {line: from.line + 1, ch: 0});
+ else cm.replaceRange("", from, sel ? to : {line: from.line});
+ },
+ deleteLine: function(cm) {var l = cm.getCursor().line; cm.replaceRange("", {line: l, ch: 0}, {line: l});},
+ undo: function(cm) {cm.undo();},
+ redo: function(cm) {cm.redo();},
+ goDocStart: function(cm) {cm.setCursor(0, 0, true);},
+ goDocEnd: function(cm) {cm.setSelection({line: cm.lineCount() - 1}, null, true);},
+ goLineStart: function(cm) {cm.setCursor(cm.getCursor().line, 0, true);},
+ goLineStartSmart: function(cm) {
+ var cur = cm.getCursor();
+ var text = cm.getLine(cur.line), firstNonWS = Math.max(0, text.search(/\S/));
+ cm.setCursor(cur.line, cur.ch <= firstNonWS && cur.ch ? 0 : firstNonWS, true);
+ },
+ goLineEnd: function(cm) {cm.setSelection({line: cm.getCursor().line}, null, true);},
+ goLineUp: function(cm) {cm.moveV(-1, "line");},
+ goLineDown: function(cm) {cm.moveV(1, "line");},
+ goPageUp: function(cm) {cm.moveV(-1, "page");},
+ goPageDown: function(cm) {cm.moveV(1, "page");},
+ goCharLeft: function(cm) {cm.moveH(-1, "char");},
+ goCharRight: function(cm) {cm.moveH(1, "char");},
+ goColumnLeft: function(cm) {cm.moveH(-1, "column");},
+ goColumnRight: function(cm) {cm.moveH(1, "column");},
+ goWordLeft: function(cm) {cm.moveH(-1, "word");},
+ goWordRight: function(cm) {cm.moveH(1, "word");},
+ delCharLeft: function(cm) {cm.deleteH(-1, "char");},
+ delCharRight: function(cm) {cm.deleteH(1, "char");},
+ delWordLeft: function(cm) {cm.deleteH(-1, "word");},
+ delWordRight: function(cm) {cm.deleteH(1, "word");},
+ indentAuto: function(cm) {cm.indentSelection("smart");},
+ indentMore: function(cm) {cm.indentSelection("add");},
+ indentLess: function(cm) {cm.indentSelection("subtract");},
+ insertTab: function(cm) {cm.replaceSelection("\t", "end");},
+ transposeChars: function(cm) {
+ var cur = cm.getCursor(), line = cm.getLine(cur.line);
+ if (cur.ch > 0 && cur.ch < line.length - 1)
+ cm.replaceRange(line.charAt(cur.ch) + line.charAt(cur.ch - 1),
+ {line: cur.line, ch: cur.ch - 1}, {line: cur.line, ch: cur.ch + 1});
+ },
+ newlineAndIndent: function(cm) {
+ cm.replaceSelection("\n", "end");
+ cm.indentLine(cm.getCursor().line);
+ },
+ toggleOverwrite: function(cm) {cm.toggleOverwrite();}
+ };
+
+ var keyMap = CodeMirror.keyMap = {};
+ keyMap.basic = {
+ "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
+ "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",
+ "Delete": "delCharRight", "Backspace": "delCharLeft", "Tab": "insertTab", "Shift-Tab": "indentAuto",
+ "Enter": "newlineAndIndent", "Insert": "toggleOverwrite"
+ };
+ // Note that the save and find-related commands aren't defined by
+ // default. Unknown commands are simply ignored.
+ keyMap.pcDefault = {
+ "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",
+ "Ctrl-Home": "goDocStart", "Alt-Up": "goDocStart", "Ctrl-End": "goDocEnd", "Ctrl-Down": "goDocEnd",
+ "Ctrl-Left": "goWordLeft", "Ctrl-Right": "goWordRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
+ "Ctrl-Backspace": "delWordLeft", "Ctrl-Delete": "delWordRight", "Ctrl-S": "save", "Ctrl-F": "find",
+ "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
+ "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
+ fallthrough: "basic"
+ };
+ keyMap.macDefault = {
+ "Cmd-A": "selectAll", "Cmd-D": "deleteLine", "Cmd-Z": "undo", "Shift-Cmd-Z": "redo", "Cmd-Y": "redo",
+ "Cmd-Up": "goDocStart", "Cmd-End": "goDocEnd", "Cmd-Down": "goDocEnd", "Alt-Left": "goWordLeft",
+ "Alt-Right": "goWordRight", "Cmd-Left": "goLineStart", "Cmd-Right": "goLineEnd", "Alt-Backspace": "delWordLeft",
+ "Ctrl-Alt-Backspace": "delWordRight", "Alt-Delete": "delWordRight", "Cmd-S": "save", "Cmd-F": "find",
+ "Cmd-G": "findNext", "Shift-Cmd-G": "findPrev", "Cmd-Alt-F": "replace", "Shift-Cmd-Alt-F": "replaceAll",
+ "Cmd-[": "indentLess", "Cmd-]": "indentMore",
+ fallthrough: ["basic", "emacsy"]
+ };
+ keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;
+ keyMap.emacsy = {
+ "Ctrl-F": "goCharRight", "Ctrl-B": "goCharLeft", "Ctrl-P": "goLineUp", "Ctrl-N": "goLineDown",
+ "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
+ "Ctrl-V": "goPageUp", "Shift-Ctrl-V": "goPageDown", "Ctrl-D": "delCharRight", "Ctrl-H": "delCharLeft",
+ "Alt-D": "delWordRight", "Alt-Backspace": "delWordLeft", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"
+ };
+
+ function getKeyMap(val) {
+ if (typeof val == "string") return keyMap[val];
+ else return val;
+ }
+ function lookupKey(name, extraMap, map, handle, stop) {
+ function lookup(map) {
+ map = getKeyMap(map);
+ var found = map[name];
+ if (found != null && handle(found)) return true;
+ if (map.nofallthrough) {
+ if (stop) stop();
+ return true;
+ }
+ var fallthrough = map.fallthrough;
+ if (fallthrough == null) return false;
+ if (Object.prototype.toString.call(fallthrough) != "[object Array]")
+ return lookup(fallthrough);
+ for (var i = 0, e = fallthrough.length; i < e; ++i) {
+ if (lookup(fallthrough[i])) return true;
+ }
+ return false;
+ }
+ if (extraMap && lookup(extraMap)) return true;
+ return lookup(map);
+ }
+ function isModifierKey(event) {
+ var name = keyNames[e_prop(event, "keyCode")];
+ return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";
+ }
+
+ CodeMirror.fromTextArea = function(textarea, options) {
+ if (!options) options = {};
+ options.value = textarea.value;
+ if (!options.tabindex && textarea.tabindex)
+ options.tabindex = textarea.tabindex;
+ if (options.autofocus == null && textarea.getAttribute("autofocus") != null)
+ options.autofocus = true;
+
+ function save() {textarea.value = instance.getValue();}
+ if (textarea.form) {
+ // Deplorable hack to make the submit method do the right thing.
+ var rmSubmit = connect(textarea.form, "submit", save, true);
+ if (typeof textarea.form.submit == "function") {
+ var realSubmit = textarea.form.submit;
+ function wrappedSubmit() {
+ save();
+ textarea.form.submit = realSubmit;
+ textarea.form.submit();
+ textarea.form.submit = wrappedSubmit;
+ }
+ textarea.form.submit = wrappedSubmit;
+ }
+ }
+
+ textarea.style.display = "none";
+ var instance = CodeMirror(function(node) {
+ textarea.parentNode.insertBefore(node, textarea.nextSibling);
+ }, options);
+ instance.save = save;
+ instance.getTextArea = function() { return textarea; };
+ instance.toTextArea = function() {
+ save();
+ textarea.parentNode.removeChild(instance.getWrapperElement());
+ textarea.style.display = "";
+ if (textarea.form) {
+ rmSubmit();
+ if (typeof textarea.form.submit == "function")
+ textarea.form.submit = realSubmit;
+ }
+ };
+ return instance;
+ };
+
+ // Utility functions for working with state. Exported because modes
+ // sometimes need to do this.
+ function copyState(mode, state) {
+ if (state === true) return state;
+ if (mode.copyState) return mode.copyState(state);
+ var nstate = {};
+ for (var n in state) {
+ var val = state[n];
+ if (val instanceof Array) val = val.concat([]);
+ nstate[n] = val;
+ }
+ return nstate;
+ }
+ CodeMirror.copyState = copyState;
+ function startState(mode, a1, a2) {
+ return mode.startState ? mode.startState(a1, a2) : true;
+ }
+ CodeMirror.startState = startState;
+
+ // The character stream used by a mode's parser.
+ function StringStream(string, tabSize) {
+ this.pos = this.start = 0;
+ this.string = string;
+ this.tabSize = tabSize || 8;
+ }
+ StringStream.prototype = {
+ eol: function() {return this.pos >= this.string.length;},
+ sol: function() {return this.pos == 0;},
+ peek: function() {return this.string.charAt(this.pos);},
+ next: function() {
+ if (this.pos < this.string.length)
+ return this.string.charAt(this.pos++);
+ },
+ eat: function(match) {
+ var ch = this.string.charAt(this.pos);
+ if (typeof match == "string") var ok = ch == match;
+ else var ok = ch && (match.test ? match.test(ch) : match(ch));
+ if (ok) {++this.pos; return ch;}
+ },
+ eatWhile: function(match) {
+ var start = this.pos;
+ while (this.eat(match)){}
+ return this.pos > start;
+ },
+ eatSpace: function() {
+ var start = this.pos;
+ while (/[\s\u00a0]/.test(this.string.charAt(this.pos))) ++this.pos;
+ return this.pos > start;
+ },
+ skipToEnd: function() {this.pos = this.string.length;},
+ skipTo: function(ch) {
+ var found = this.string.indexOf(ch, this.pos);
+ if (found > -1) {this.pos = found; return true;}
+ },
+ backUp: function(n) {this.pos -= n;},
+ column: function() {return countColumn(this.string, this.start, this.tabSize);},
+ indentation: function() {return countColumn(this.string, null, this.tabSize);},
+ match: function(pattern, consume, caseInsensitive) {
+ if (typeof pattern == "string") {
+ function cased(str) {return caseInsensitive ? str.toLowerCase() : str;}
+ if (cased(this.string).indexOf(cased(pattern), this.pos) == this.pos) {
+ if (consume !== false) this.pos += pattern.length;
+ return true;
+ }
+ }
+ else {
+ var match = this.string.slice(this.pos).match(pattern);
+ if (match && consume !== false) this.pos += match[0].length;
+ return match;
+ }
+ },
+ current: function(){return this.string.slice(this.start, this.pos);}
+ };
+ CodeMirror.StringStream = StringStream;
+
+ function MarkedText(from, to, className, marker) {
+ this.from = from; this.to = to; this.style = className; this.marker = marker;
+ }
+ MarkedText.prototype = {
+ attach: function(line) { this.marker.set.push(line); },
+ detach: function(line) {
+ var ix = indexOf(this.marker.set, line);
+ if (ix > -1) this.marker.set.splice(ix, 1);
+ },
+ split: function(pos, lenBefore) {
+ if (this.to <= pos && this.to != null) return null;
+ var from = this.from < pos || this.from == null ? null : this.from - pos + lenBefore;
+ var to = this.to == null ? null : this.to - pos + lenBefore;
+ return new MarkedText(from, to, this.style, this.marker);
+ },
+ dup: function() { return new MarkedText(null, null, this.style, this.marker); },
+ clipTo: function(fromOpen, from, toOpen, to, diff) {
+ if (fromOpen && to > this.from && (to < this.to || this.to == null))
+ this.from = null;
+ else if (this.from != null && this.from >= from)
+ this.from = Math.max(to, this.from) + diff;
+ if (toOpen && (from < this.to || this.to == null) && (from > this.from || this.from == null))
+ this.to = null;
+ else if (this.to != null && this.to > from)
+ this.to = to < this.to ? this.to + diff : from;
+ },
+ isDead: function() { return this.from != null && this.to != null && this.from >= this.to; },
+ sameSet: function(x) { return this.marker == x.marker; }
+ };
+
+ function Bookmark(pos) {
+ this.from = pos; this.to = pos; this.line = null;
+ }
+ Bookmark.prototype = {
+ attach: function(line) { this.line = line; },
+ detach: function(line) { if (this.line == line) this.line = null; },
+ split: function(pos, lenBefore) {
+ if (pos < this.from) {
+ this.from = this.to = (this.from - pos) + lenBefore;
+ return this;
+ }
+ },
+ isDead: function() { return this.from > this.to; },
+ clipTo: function(fromOpen, from, toOpen, to, diff) {
+ if ((fromOpen || from < this.from) && (toOpen || to > this.to)) {
+ this.from = 0; this.to = -1;
+ } else if (this.from > from) {
+ this.from = this.to = Math.max(to, this.from) + diff;
+ }
+ },
+ sameSet: function(x) { return false; },
+ find: function() {
+ if (!this.line || !this.line.parent) return null;
+ return {line: lineNo(this.line), ch: this.from};
+ },
+ clear: function() {
+ if (this.line) {
+ var found = indexOf(this.line.marked, this);
+ if (found != -1) this.line.marked.splice(found, 1);
+ this.line = null;
+ }
+ }
+ };
+
+ // Line objects. These hold state related to a line, including
+ // highlighting info (the styles array).
+ function Line(text, styles) {
+ this.styles = styles || [text, null];
+ this.text = text;
+ this.height = 1;
+ this.marked = this.gutterMarker = this.className = this.bgClassName = this.handlers = null;
+ this.stateAfter = this.parent = this.hidden = null;
+ }
+ Line.inheritMarks = function(text, orig) {
+ var ln = new Line(text), mk = orig && orig.marked;
+ if (mk) {
+ for (var i = 0; i < mk.length; ++i) {
+ if (mk[i].to == null && mk[i].style) {
+ var newmk = ln.marked || (ln.marked = []), mark = mk[i];
+ var nmark = mark.dup(); newmk.push(nmark); nmark.attach(ln);
+ }
+ }
+ }
+ return ln;
+ }
+ Line.prototype = {
+ // Replace a piece of a line, keeping the styles around it intact.
+ replace: function(from, to_, text) {
+ var st = [], mk = this.marked, to = to_ == null ? this.text.length : to_;
+ copyStyles(0, from, this.styles, st);
+ if (text) st.push(text, null);
+ copyStyles(to, this.text.length, this.styles, st);
+ this.styles = st;
+ this.text = this.text.slice(0, from) + text + this.text.slice(to);
+ this.stateAfter = null;
+ if (mk) {
+ var diff = text.length - (to - from);
+ for (var i = 0; i < mk.length; ++i) {
+ var mark = mk[i];
+ mark.clipTo(from == null, from || 0, to_ == null, to, diff);
+ if (mark.isDead()) {mark.detach(this); mk.splice(i--, 1);}
+ }
+ }
+ },
+ // Split a part off a line, keeping styles and markers intact.
+ split: function(pos, textBefore) {
+ var st = [textBefore, null], mk = this.marked;
+ copyStyles(pos, this.text.length, this.styles, st);
+ var taken = new Line(textBefore + this.text.slice(pos), st);
+ if (mk) {
+ for (var i = 0; i < mk.length; ++i) {
+ var mark = mk[i];
+ var newmark = mark.split(pos, textBefore.length);
+ if (newmark) {
+ if (!taken.marked) taken.marked = [];
+ taken.marked.push(newmark); newmark.attach(taken);
+ if (newmark == mark) mk.splice(i--, 1);
+ }
+ }
+ }
+ return taken;
+ },
+ append: function(line) {
+ var mylen = this.text.length, mk = line.marked, mymk = this.marked;
+ this.text += line.text;
+ copyStyles(0, line.text.length, line.styles, this.styles);
+ if (mymk) {
+ for (var i = 0; i < mymk.length; ++i)
+ if (mymk[i].to == null) mymk[i].to = mylen;
+ }
+ if (mk && mk.length) {
+ if (!mymk) this.marked = mymk = [];
+ outer: for (var i = 0; i < mk.length; ++i) {
+ var mark = mk[i];
+ if (!mark.from) {
+ for (var j = 0; j < mymk.length; ++j) {
+ var mymark = mymk[j];
+ if (mymark.to == mylen && mymark.sameSet(mark)) {
+ mymark.to = mark.to == null ? null : mark.to + mylen;
+ if (mymark.isDead()) {
+ mymark.detach(this);
+ mk.splice(i--, 1);
+ }
+ continue outer;
+ }
+ }
+ }
+ mymk.push(mark);
+ mark.attach(this);
+ mark.from += mylen;
+ if (mark.to != null) mark.to += mylen;
+ }
+ }
+ },
+ fixMarkEnds: function(other) {
+ var mk = this.marked, omk = other.marked;
+ if (!mk) return;
+ for (var i = 0; i < mk.length; ++i) {
+ var mark = mk[i], close = mark.to == null;
+ if (close && omk) {
+ for (var j = 0; j < omk.length; ++j)
+ if (omk[j].sameSet(mark)) {close = false; break;}
+ }
+ if (close) mark.to = this.text.length;
+ }
+ },
+ fixMarkStarts: function() {
+ var mk = this.marked;
+ if (!mk) return;
+ for (var i = 0; i < mk.length; ++i)
+ if (mk[i].from == null) mk[i].from = 0;
+ },
+ addMark: function(mark) {
+ mark.attach(this);
+ if (this.marked == null) this.marked = [];
+ this.marked.push(mark);
+ this.marked.sort(function(a, b){return (a.from || 0) - (b.from || 0);});
+ },
+ // Run the given mode's parser over a line, update the styles
+ // array, which contains alternating fragments of text and CSS
+ // classes.
+ highlight: function(mode, state, tabSize) {
+ var stream = new StringStream(this.text, tabSize), st = this.styles, pos = 0;
+ var changed = false, curWord = st[0], prevWord;
+ if (this.text == "" && mode.blankLine) mode.blankLine(state);
+ while (!stream.eol()) {
+ var style = mode.token(stream, state);
+ var substr = this.text.slice(stream.start, stream.pos);
+ stream.start = stream.pos;
+ if (pos && st[pos-1] == style)
+ st[pos-2] += substr;
+ else if (substr) {
+ if (!changed && (st[pos+1] != style || (pos && st[pos-2] != prevWord))) changed = true;
+ st[pos++] = substr; st[pos++] = style;
+ prevWord = curWord; curWord = st[pos];
+ }
+ // Give up when line is ridiculously long
+ if (stream.pos > 5000) {
+ st[pos++] = this.text.slice(stream.pos); st[pos++] = null;
+ break;
+ }
+ }
+ if (st.length != pos) {st.length = pos; changed = true;}
+ if (pos && st[pos-2] != prevWord) changed = true;
+ // Short lines with simple highlights return null, and are
+ // counted as changed by the driver because they are likely to
+ // highlight the same way in various contexts.
+ return changed || (st.length < 5 && this.text.length < 10 ? null : false);
+ },
+ // Fetch the parser token for a given character. Useful for hacks
+ // that want to inspect the mode state (say, for completion).
+ getTokenAt: function(mode, state, ch) {
+ var txt = this.text, stream = new StringStream(txt);
+ while (stream.pos < ch && !stream.eol()) {
+ stream.start = stream.pos;
+ var style = mode.token(stream, state);
+ }
+ return {start: stream.start,
+ end: stream.pos,
+ string: stream.current(),
+ className: style || null,
+ state: state};
+ },
+ indentation: function(tabSize) {return countColumn(this.text, null, tabSize);},
+ // Produces an HTML fragment for the line, taking selection,
+ // marking, and highlighting into account.
+ getHTML: function(makeTab, wrapAt, wrapId, wrapWBR) {
+ var html = [], first = true, col = 0;
+ function span_(text, style) {
+ if (!text) return;
+ // Work around a bug where, in some compat modes, IE ignores leading spaces
+ if (first && ie && text.charAt(0) == " ") text = "\u00a0" + text.slice(1);
+ first = false;
+ if (text.indexOf("\t") == -1) {
+ col += text.length;
+ var escaped = htmlEscape(text);
+ } else {
+ var escaped = "";
+ for (var pos = 0;;) {
+ var idx = text.indexOf("\t", pos);
+ if (idx == -1) {
+ escaped += htmlEscape(text.slice(pos));
+ col += text.length - pos;
+ break;
+ } else {
+ col += idx - pos;
+ var tab = makeTab(col);
+ escaped += htmlEscape(text.slice(pos, idx)) + tab.html;
+ col += tab.width;
+ pos = idx + 1;
+ }
+ }
+ }
+ if (style) html.push('', escaped, "");
+ else html.push(escaped);
+ }
+ var span = span_;
+ if (wrapAt != null) {
+ var outPos = 0, open = "";
+ span = function(text, style) {
+ var l = text.length;
+ if (wrapAt >= outPos && wrapAt < outPos + l) {
+ if (wrapAt > outPos) {
+ span_(text.slice(0, wrapAt - outPos), style);
+ // See comment at the definition of spanAffectsWrapping
+ if (wrapWBR) html.push("");
+ }
+ html.push(open);
+ span_(text.slice(wrapAt - outPos), style);
+ html.push("");
+ wrapAt--;
+ outPos += l;
+ } else {
+ outPos += l;
+ span_(text, style);
+ // Output empty wrapper when at end of line
+ if (outPos == wrapAt && outPos == len) html.push(open + "");
+ // Stop outputting HTML when gone sufficiently far beyond measure
+ else if (outPos > wrapAt + 10 && /\s/.test(text)) span = function(){};
+ }
+ }
+ }
+
+ var st = this.styles, allText = this.text, marked = this.marked;
+ var len = allText.length;
+ function styleToClass(style) {
+ if (!style) return null;
+ return "cm-" + style.replace(/ +/g, " cm-");
+ }
+
+ if (!allText && wrapAt == null) {
+ span(" ");
+ } else if (!marked || !marked.length) {
+ for (var i = 0, ch = 0; ch < len; i+=2) {
+ var str = st[i], style = st[i+1], l = str.length;
+ if (ch + l > len) str = str.slice(0, len - ch);
+ ch += l;
+ span(str, styleToClass(style));
+ }
+ } else {
+ var pos = 0, i = 0, text = "", style, sg = 0;
+ var nextChange = marked[0].from || 0, marks = [], markpos = 0;
+ function advanceMarks() {
+ var m;
+ while (markpos < marked.length &&
+ ((m = marked[markpos]).from == pos || m.from == null)) {
+ if (m.style != null) marks.push(m);
+ ++markpos;
+ }
+ nextChange = markpos < marked.length ? marked[markpos].from : Infinity;
+ for (var i = 0; i < marks.length; ++i) {
+ var to = marks[i].to || Infinity;
+ if (to == pos) marks.splice(i--, 1);
+ else nextChange = Math.min(to, nextChange);
+ }
+ }
+ var m = 0;
+ while (pos < len) {
+ if (nextChange == pos) advanceMarks();
+ var upto = Math.min(len, nextChange);
+ while (true) {
+ if (text) {
+ var end = pos + text.length;
+ var appliedStyle = style;
+ for (var j = 0; j < marks.length; ++j)
+ appliedStyle = (appliedStyle ? appliedStyle + " " : "") + marks[j].style;
+ span(end > upto ? text.slice(0, upto - pos) : text, appliedStyle);
+ if (end >= upto) {text = text.slice(upto - pos); pos = upto; break;}
+ pos = end;
+ }
+ text = st[i++]; style = styleToClass(st[i++]);
+ }
+ }
+ }
+ return html.join("");
+ },
+ cleanUp: function() {
+ this.parent = null;
+ if (this.marked)
+ for (var i = 0, e = this.marked.length; i < e; ++i) this.marked[i].detach(this);
+ }
+ };
+ // Utility used by replace and split above
+ function copyStyles(from, to, source, dest) {
+ for (var i = 0, pos = 0, state = 0; pos < to; i+=2) {
+ var part = source[i], end = pos + part.length;
+ if (state == 0) {
+ if (end > from) dest.push(part.slice(from - pos, Math.min(part.length, to - pos)), source[i+1]);
+ if (end >= from) state = 1;
+ }
+ else if (state == 1) {
+ if (end > to) dest.push(part.slice(0, to - pos), source[i+1]);
+ else dest.push(part, source[i+1]);
+ }
+ pos = end;
+ }
+ }
+
+ // Data structure that holds the sequence of lines.
+ function LeafChunk(lines) {
+ this.lines = lines;
+ this.parent = null;
+ for (var i = 0, e = lines.length, height = 0; i < e; ++i) {
+ lines[i].parent = this;
+ height += lines[i].height;
+ }
+ this.height = height;
+ }
+ LeafChunk.prototype = {
+ chunkSize: function() { return this.lines.length; },
+ remove: function(at, n, callbacks) {
+ for (var i = at, e = at + n; i < e; ++i) {
+ var line = this.lines[i];
+ this.height -= line.height;
+ line.cleanUp();
+ if (line.handlers)
+ for (var j = 0; j < line.handlers.length; ++j) callbacks.push(line.handlers[j]);
+ }
+ this.lines.splice(at, n);
+ },
+ collapse: function(lines) {
+ lines.splice.apply(lines, [lines.length, 0].concat(this.lines));
+ },
+ insertHeight: function(at, lines, height) {
+ this.height += height;
+ // The trick below is apparently too advanced for IE, which
+ // occasionally corrupts this.lines (duplicating elements) when
+ // it is used.
+ if (ie) this.lines = this.lines.slice(0, at).concat(lines).concat(this.lines.slice(at));
+ else this.lines.splice.apply(this.lines, [at, 0].concat(lines));
+ for (var i = 0, e = lines.length; i < e; ++i) lines[i].parent = this;
+ },
+ iterN: function(at, n, op) {
+ for (var e = at + n; at < e; ++at)
+ if (op(this.lines[at])) return true;
+ }
+ };
+ function BranchChunk(children) {
+ this.children = children;
+ var size = 0, height = 0;
+ for (var i = 0, e = children.length; i < e; ++i) {
+ var ch = children[i];
+ size += ch.chunkSize(); height += ch.height;
+ ch.parent = this;
+ }
+ this.size = size;
+ this.height = height;
+ this.parent = null;
+ }
+ BranchChunk.prototype = {
+ chunkSize: function() { return this.size; },
+ remove: function(at, n, callbacks) {
+ this.size -= n;
+ for (var i = 0; i < this.children.length; ++i) {
+ var child = this.children[i], sz = child.chunkSize();
+ if (at < sz) {
+ var rm = Math.min(n, sz - at), oldHeight = child.height;
+ child.remove(at, rm, callbacks);
+ this.height -= oldHeight - child.height;
+ if (sz == rm) { this.children.splice(i--, 1); child.parent = null; }
+ if ((n -= rm) == 0) break;
+ at = 0;
+ } else at -= sz;
+ }
+ if (this.size - n < 25) {
+ var lines = [];
+ this.collapse(lines);
+ this.children = [new LeafChunk(lines)];
+ this.children[0].parent = this;
+ }
+ },
+ collapse: function(lines) {
+ for (var i = 0, e = this.children.length; i < e; ++i) this.children[i].collapse(lines);
+ },
+ insert: function(at, lines) {
+ var height = 0;
+ for (var i = 0, e = lines.length; i < e; ++i) height += lines[i].height;
+ this.insertHeight(at, lines, height);
+ },
+ insertHeight: function(at, lines, height) {
+ this.size += lines.length;
+ this.height += height;
+ for (var i = 0, e = this.children.length; i < e; ++i) {
+ var child = this.children[i], sz = child.chunkSize();
+ if (at <= sz) {
+ child.insertHeight(at, lines, height);
+ if (child.lines && child.lines.length > 50) {
+ while (child.lines.length > 50) {
+ var spilled = child.lines.splice(child.lines.length - 25, 25);
+ var newleaf = new LeafChunk(spilled);
+ child.height -= newleaf.height;
+ this.children.splice(i + 1, 0, newleaf);
+ newleaf.parent = this;
+ }
+ this.maybeSpill();
+ }
+ break;
+ }
+ at -= sz;
+ }
+ },
+ maybeSpill: function() {
+ if (this.children.length <= 10) return;
+ var me = this;
+ do {
+ var spilled = me.children.splice(me.children.length - 5, 5);
+ var sibling = new BranchChunk(spilled);
+ if (!me.parent) { // Become the parent node
+ var copy = new BranchChunk(me.children);
+ copy.parent = me;
+ me.children = [copy, sibling];
+ me = copy;
+ } else {
+ me.size -= sibling.size;
+ me.height -= sibling.height;
+ var myIndex = indexOf(me.parent.children, me);
+ me.parent.children.splice(myIndex + 1, 0, sibling);
+ }
+ sibling.parent = me.parent;
+ } while (me.children.length > 10);
+ me.parent.maybeSpill();
+ },
+ iter: function(from, to, op) { this.iterN(from, to - from, op); },
+ iterN: function(at, n, op) {
+ for (var i = 0, e = this.children.length; i < e; ++i) {
+ var child = this.children[i], sz = child.chunkSize();
+ if (at < sz) {
+ var used = Math.min(n, sz - at);
+ if (child.iterN(at, used, op)) return true;
+ if ((n -= used) == 0) break;
+ at = 0;
+ } else at -= sz;
+ }
+ }
+ };
+
+ function getLineAt(chunk, n) {
+ while (!chunk.lines) {
+ for (var i = 0;; ++i) {
+ var child = chunk.children[i], sz = child.chunkSize();
+ if (n < sz) { chunk = child; break; }
+ n -= sz;
+ }
+ }
+ return chunk.lines[n];
+ }
+ function lineNo(line) {
+ if (line.parent == null) return null;
+ var cur = line.parent, no = indexOf(cur.lines, line);
+ for (var chunk = cur.parent; chunk; cur = chunk, chunk = chunk.parent) {
+ for (var i = 0, e = chunk.children.length; ; ++i) {
+ if (chunk.children[i] == cur) break;
+ no += chunk.children[i].chunkSize();
+ }
+ }
+ return no;
+ }
+ function lineAtHeight(chunk, h) {
+ var n = 0;
+ outer: do {
+ for (var i = 0, e = chunk.children.length; i < e; ++i) {
+ var child = chunk.children[i], ch = child.height;
+ if (h < ch) { chunk = child; continue outer; }
+ h -= ch;
+ n += child.chunkSize();
+ }
+ return n;
+ } while (!chunk.lines);
+ for (var i = 0, e = chunk.lines.length; i < e; ++i) {
+ var line = chunk.lines[i], lh = line.height;
+ if (h < lh) break;
+ h -= lh;
+ }
+ return n + i;
+ }
+ function heightAtLine(chunk, n) {
+ var h = 0;
+ outer: do {
+ for (var i = 0, e = chunk.children.length; i < e; ++i) {
+ var child = chunk.children[i], sz = child.chunkSize();
+ if (n < sz) { chunk = child; continue outer; }
+ n -= sz;
+ h += child.height;
+ }
+ return h;
+ } while (!chunk.lines);
+ for (var i = 0; i < n; ++i) h += chunk.lines[i].height;
+ return h;
+ }
+
+ // The history object 'chunks' changes that are made close together
+ // and at almost the same time into bigger undoable units.
+ function History() {
+ this.time = 0;
+ this.done = []; this.undone = [];
+ this.compound = 0;
+ this.closed = false;
+ }
+ History.prototype = {
+ addChange: function(start, added, old) {
+ this.undone.length = 0;
+ var time = +new Date, cur = this.done[this.done.length - 1], last = cur && cur[cur.length - 1];
+ var dtime = time - this.time;
+
+ if (this.compound && cur && !this.closed) {
+ cur.push({start: start, added: added, old: old});
+ } else if (dtime > 400 || !last || this.closed ||
+ last.start > start + old.length || last.start + last.added < start) {
+ this.done.push([{start: start, added: added, old: old}]);
+ this.closed = false;
+ } else {
+ var startBefore = Math.max(0, last.start - start),
+ endAfter = Math.max(0, (start + old.length) - (last.start + last.added));
+ for (var i = startBefore; i > 0; --i) last.old.unshift(old[i - 1]);
+ for (var i = endAfter; i > 0; --i) last.old.push(old[old.length - i]);
+ if (startBefore) last.start = start;
+ last.added += added - (old.length - startBefore - endAfter);
+ }
+ this.time = time;
+ },
+ startCompound: function() {
+ if (!this.compound++) this.closed = true;
+ },
+ endCompound: function() {
+ if (!--this.compound) this.closed = true;
+ }
+ };
+
+ function stopMethod() {e_stop(this);}
+ // Ensure an event has a stop method.
+ function addStop(event) {
+ if (!event.stop) event.stop = stopMethod;
+ return event;
+ }
+
+ function e_preventDefault(e) {
+ if (e.preventDefault) e.preventDefault();
+ else e.returnValue = false;
+ }
+ function e_stopPropagation(e) {
+ if (e.stopPropagation) e.stopPropagation();
+ else e.cancelBubble = true;
+ }
+ function e_stop(e) {e_preventDefault(e); e_stopPropagation(e);}
+ CodeMirror.e_stop = e_stop;
+ CodeMirror.e_preventDefault = e_preventDefault;
+ CodeMirror.e_stopPropagation = e_stopPropagation;
+
+ function e_target(e) {return e.target || e.srcElement;}
+ function e_button(e) {
+ if (e.which) return e.which;
+ else if (e.button & 1) return 1;
+ else if (e.button & 2) return 3;
+ else if (e.button & 4) return 2;
+ }
+
+ // Allow 3rd-party code to override event properties by adding an override
+ // object to an event object.
+ function e_prop(e, prop) {
+ var overridden = e.override && e.override.hasOwnProperty(prop);
+ return overridden ? e.override[prop] : e[prop];
+ }
+
+ // Event handler registration. If disconnect is true, it'll return a
+ // function that unregisters the handler.
+ function connect(node, type, handler, disconnect) {
+ if (typeof node.addEventListener == "function") {
+ node.addEventListener(type, handler, false);
+ if (disconnect) return function() {node.removeEventListener(type, handler, false);};
+ }
+ else {
+ var wrapHandler = function(event) {handler(event || window.event);};
+ node.attachEvent("on" + type, wrapHandler);
+ if (disconnect) return function() {node.detachEvent("on" + type, wrapHandler);};
+ }
+ }
+ CodeMirror.connect = connect;
+
+ function Delayed() {this.id = null;}
+ Delayed.prototype = {set: function(ms, f) {clearTimeout(this.id); this.id = setTimeout(f, ms);}};
+
+ var Pass = CodeMirror.Pass = {toString: function(){return "CodeMirror.Pass";}};
+
+ var gecko = /gecko\/\d{7}/i.test(navigator.userAgent);
+ var ie = /MSIE \d/.test(navigator.userAgent);
+ var ie_lt9 = /MSIE [1-8]\b/.test(navigator.userAgent);
+ var quirksMode = ie && document.documentMode == 5;
+ var webkit = /WebKit\//.test(navigator.userAgent);
+ var chrome = /Chrome\//.test(navigator.userAgent);
+ var safari = /Apple Computer/.test(navigator.vendor);
+ var khtml = /KHTML\//.test(navigator.userAgent);
+
+ // Detect drag-and-drop
+ var dragAndDrop = function() {
+ // There is *some* kind of drag-and-drop support in IE6-8, but I
+ // couldn't get it to work yet.
+ if (ie_lt9) return false;
+ var div = document.createElement('div');
+ return "draggable" in div || "dragDrop" in div;
+ }();
+
+ // Feature-detect whether newlines in textareas are converted to \r\n
+ var lineSep = function () {
+ var te = document.createElement("textarea");
+ te.value = "foo\nbar";
+ if (te.value.indexOf("\r") > -1) return "\r\n";
+ return "\n";
+ }();
+
+ // For a reason I have yet to figure out, some browsers disallow
+ // word wrapping between certain characters *only* if a new inline
+ // element is started between them. This makes it hard to reliably
+ // measure the position of things, since that requires inserting an
+ // extra span. This terribly fragile set of regexps matches the
+ // character combinations that suffer from this phenomenon on the
+ // various browsers.
+ var spanAffectsWrapping = /^$/; // Won't match any two-character string
+ if (gecko) spanAffectsWrapping = /$'/;
+ else if (safari) spanAffectsWrapping = /\-[^ \-?]|\?[^ !'\"\),.\-\/:;\?\]\}]/;
+ else if (chrome) spanAffectsWrapping = /\-[^ \-\.?]|\?[^ \-\.?\]\}:;!'\"\),\/]|[\.!\"#&%\)*+,:;=>\]|\}~][\(\{\[<]|\$'/;
+
+ // Counts the column offset in a string, taking tabs into account.
+ // Used mostly to find indentation.
+ function countColumn(string, end, tabSize) {
+ if (end == null) {
+ end = string.search(/[^\s\u00a0]/);
+ if (end == -1) end = string.length;
+ }
+ for (var i = 0, n = 0; i < end; ++i) {
+ if (string.charAt(i) == "\t") n += tabSize - (n % tabSize);
+ else ++n;
+ }
+ return n;
+ }
+
+ function computedStyle(elt) {
+ if (elt.currentStyle) return elt.currentStyle;
+ return window.getComputedStyle(elt, null);
+ }
+
+ // Find the position of an element by following the offsetParent chain.
+ // If screen==true, it returns screen (rather than page) coordinates.
+ function eltOffset(node, screen) {
+ var bod = node.ownerDocument.body;
+ var x = 0, y = 0, skipBody = false;
+ for (var n = node; n; n = n.offsetParent) {
+ var ol = n.offsetLeft, ot = n.offsetTop;
+ // Firefox reports weird inverted offsets when the body has a border.
+ if (n == bod) { x += Math.abs(ol); y += Math.abs(ot); }
+ else { x += ol, y += ot; }
+ if (screen && computedStyle(n).position == "fixed")
+ skipBody = true;
+ }
+ var e = screen && !skipBody ? null : bod;
+ for (var n = node.parentNode; n != e; n = n.parentNode)
+ if (n.scrollLeft != null) { x -= n.scrollLeft; y -= n.scrollTop;}
+ return {left: x, top: y};
+ }
+ // Use the faster and saner getBoundingClientRect method when possible.
+ if (document.documentElement.getBoundingClientRect != null) eltOffset = function(node, screen) {
+ // Take the parts of bounding client rect that we are interested in so we are able to edit if need be,
+ // since the returned value cannot be changed externally (they are kept in sync as the element moves within the page)
+ try { var box = node.getBoundingClientRect(); box = { top: box.top, left: box.left }; }
+ catch(e) { box = {top: 0, left: 0}; }
+ if (!screen) {
+ // Get the toplevel scroll, working around browser differences.
+ if (window.pageYOffset == null) {
+ var t = document.documentElement || document.body.parentNode;
+ if (t.scrollTop == null) t = document.body;
+ box.top += t.scrollTop; box.left += t.scrollLeft;
+ } else {
+ box.top += window.pageYOffset; box.left += window.pageXOffset;
+ }
+ }
+ return box;
+ };
+
+ // Get a node's text content.
+ function eltText(node) {
+ return node.textContent || node.innerText || node.nodeValue || "";
+ }
+ function selectInput(node) {
+ if (ios) { // Mobile Safari apparently has a bug where select() is broken.
+ node.selectionStart = 0;
+ node.selectionEnd = node.value.length;
+ } else node.select();
+ }
+
+ // Operations on {line, ch} objects.
+ function posEq(a, b) {return a.line == b.line && a.ch == b.ch;}
+ function posLess(a, b) {return a.line < b.line || (a.line == b.line && a.ch < b.ch);}
+ function copyPos(x) {return {line: x.line, ch: x.ch};}
+
+ var escapeElement = document.createElement("pre");
+ function htmlEscape(str) {
+ escapeElement.textContent = str;
+ return escapeElement.innerHTML;
+ }
+ // Recent (late 2011) Opera betas insert bogus newlines at the start
+ // of the textContent, so we strip those.
+ if (htmlEscape("a") == "\na")
+ htmlEscape = function(str) {
+ escapeElement.textContent = str;
+ return escapeElement.innerHTML.slice(1);
+ };
+ // Some IEs don't preserve tabs through innerHTML
+ else if (htmlEscape("\t") != "\t")
+ htmlEscape = function(str) {
+ escapeElement.innerHTML = "";
+ escapeElement.appendChild(document.createTextNode(str));
+ return escapeElement.innerHTML;
+ };
+ CodeMirror.htmlEscape = htmlEscape;
+
+ // Used to position the cursor after an undo/redo by finding the
+ // last edited character.
+ function editEnd(from, to) {
+ if (!to) return 0;
+ if (!from) return to.length;
+ for (var i = from.length, j = to.length; i >= 0 && j >= 0; --i, --j)
+ if (from.charAt(i) != to.charAt(j)) break;
+ return j + 1;
+ }
+
+ function indexOf(collection, elt) {
+ if (collection.indexOf) return collection.indexOf(elt);
+ for (var i = 0, e = collection.length; i < e; ++i)
+ if (collection[i] == elt) return i;
+ return -1;
+ }
+ function isWordChar(ch) {
+ return /\w/.test(ch) || ch.toUpperCase() != ch.toLowerCase();
+ }
+
+ // See if "".split is the broken IE version, if so, provide an
+ // alternative way to split lines.
+ var splitLines = "\n\nb".split(/\n/).length != 3 ? function(string) {
+ var pos = 0, nl, result = [];
+ while ((nl = string.indexOf("\n", pos)) > -1) {
+ result.push(string.slice(pos, string.charAt(nl-1) == "\r" ? nl - 1 : nl));
+ pos = nl + 1;
+ }
+ result.push(string.slice(pos));
+ return result;
+ } : function(string){return string.split(/\r?\n/);};
+ CodeMirror.splitLines = splitLines;
+
+ var hasSelection = window.getSelection ? function(te) {
+ try { return te.selectionStart != te.selectionEnd; }
+ catch(e) { return false; }
+ } : function(te) {
+ try {var range = te.ownerDocument.selection.createRange();}
+ catch(e) {}
+ if (!range || range.parentElement() != te) return false;
+ return range.compareEndPoints("StartToEnd", range) != 0;
+ };
+
+ CodeMirror.defineMode("null", function() {
+ return {token: function(stream) {stream.skipToEnd();}};
+ });
+ CodeMirror.defineMIME("text/plain", "null");
+
+ var keyNames = {3: "Enter", 8: "Backspace", 9: "Tab", 13: "Enter", 16: "Shift", 17: "Ctrl", 18: "Alt",
+ 19: "Pause", 20: "CapsLock", 27: "Esc", 32: "Space", 33: "PageUp", 34: "PageDown", 35: "End",
+ 36: "Home", 37: "Left", 38: "Up", 39: "Right", 40: "Down", 44: "PrintScrn", 45: "Insert",
+ 46: "Delete", 59: ";", 91: "Mod", 92: "Mod", 93: "Mod", 127: "Delete", 186: ";", 187: "=", 188: ",",
+ 189: "-", 190: ".", 191: "/", 192: "`", 219: "[", 220: "\\", 221: "]", 222: "'", 63276: "PageUp",
+ 63277: "PageDown", 63275: "End", 63273: "Home", 63234: "Left", 63232: "Up", 63235: "Right",
+ 63233: "Down", 63302: "Insert", 63272: "Delete"};
+ CodeMirror.keyNames = keyNames;
+ (function() {
+ // Number keys
+ for (var i = 0; i < 10; i++) keyNames[i + 48] = String(i);
+ // Alphabetic keys
+ for (var i = 65; i <= 90; i++) keyNames[i] = String.fromCharCode(i);
+ // Function keys
+ for (var i = 1; i <= 12; i++) keyNames[i + 111] = keyNames[i + 63235] = "F" + i;
+ })();
+
+ return CodeMirror;
+})();