You are viewing a plain text version of this content. The canonical link for it is here.
Posted to commits@couchdb.apache.org by ry...@apache.org on 2013/05/11 07:48:21 UTC
[08/51] [partial] Restructure to simpler jam/erica style.
http://git-wip-us.apache.org/repos/asf/couchdb/blob/4615a788/src/fauxton/jam/codemirror/lib/codemirror.js
----------------------------------------------------------------------
diff --git a/src/fauxton/jam/codemirror/lib/codemirror.js b/src/fauxton/jam/codemirror/lib/codemirror.js
new file mode 100644
index 0000000..761e3cd
--- /dev/null
+++ b/src/fauxton/jam/codemirror/lib/codemirror.js
@@ -0,0 +1,3186 @@
+(function (root, factory) {
+ if (typeof exports === 'object') {
+ // Node. Does not work with strict CommonJS, but
+ // only CommonJS-like enviroments that support module.exports,
+ // like Node.
+ module.exports = factory(require('jquery'));
+ } else if (typeof define === 'function' && define.amd) {
+ // AMD. Register as an anonymous module.
+ define([], factory);
+ } else {
+ // Browser globals
+ root.returnExports = factory(root.jQuery);
+ }
+}(this, function () {
+
+// 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
+
+ "use strict";
+ // This is the function that produces an editor instance. Its
+ // closure is used to store the editor state.
+ var CodeMirror = 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];
+
+ var input = elt("textarea", null, null, "position: absolute; padding: 0; width: 1px; height: 1em");
+ input.setAttribute("wrap", "off"); input.setAttribute("autocorrect", "off"); input.setAttribute("autocapitalize", "off");
+ // Wraps and hides input textarea
+ var inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");
+ // The empty scrollbar content, used solely for managing the scrollbar thumb.
+ var scrollbarInner = elt("div", null, "CodeMirror-scrollbar-inner");
+ // The vertical scrollbar. Horizontal scrolling is handled by the scroller itself.
+ var scrollbar = elt("div", [scrollbarInner], "CodeMirror-scrollbar");
+ // DIVs containing the selection and the actual code
+ var lineDiv = elt("div"), selectionDiv = elt("div", null, null, "position: relative; z-index: -1");
+ // Blinky cursor, and element used to ensure cursor fits at the end of a line
+ var cursor = elt("pre", "\u00a0", "CodeMirror-cursor"), widthForcer = elt("pre", "\u00a0", "CodeMirror-cursor", "visibility: hidden");
+ // Used to measure text size
+ var measure = elt("div", null, null, "position: absolute; width: 100%; height: 0px; overflow: hidden; visibility: hidden;");
+ var lineSpace = elt("div", [measure, cursor, widthForcer, selectionDiv, lineDiv], null, "position: relative; z-index: 0");
+ var gutterText = elt("div", null, "CodeMirror-gutter-text"), gutter = elt("div", [gutterText], "CodeMirror-gutter");
+ // Moved around its parent to cover visible view
+ var mover = elt("div", [gutter, elt("div", [lineSpace], "CodeMirror-lines")], null, "position: relative");
+ // Set to the height of the text, causes scrolling
+ var sizer = elt("div", [mover], null, "position: relative");
+ // Provides scrolling
+ var scroller = elt("div", [sizer], "CodeMirror-scroll");
+ scroller.setAttribute("tabIndex", "-1");
+ // The element in which the editor lives.
+ var wrapper = elt("div", [inputDiv, scrollbar, scroller], "CodeMirror" + (options.lineWrapping ? " CodeMirror-wrap" : ""));
+ if (place.appendChild) place.appendChild(wrapper); else place(wrapper);
+
+ themeChanged(); keyMapChanged();
+ // Needed to hide big blue blinking cursor on Mobile Safari
+ if (ios) input.style.width = "0px";
+ if (!webkit) scroller.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 OS X >= 10.7. This has transparent scrollbars, so the
+ // overlaying of one scrollbar with another won't work. This is a
+ // temporary hack to simply turn off the overlay scrollbar. See
+ // issue #727.
+ if (mac_geLion) { scrollbar.style.zIndex = -2; scrollbar.style.visibility = "hidden"; }
+ // Need to set a minimum width to see the scrollbar on IE7 (but must not set it on IE8).
+ else if (ie_lt8) scrollbar.style.minWidth = "18px";
+
+ // 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,
+ // frontier is the point up to which the content has been parsed,
+ // and history the undo history (instance of History constructor).
+ var mode, doc = new BranchChunk([new LeafChunk([new Line("")])]), frontier = 0, 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, lastScrollTop = 0, draggingText,
+ overwrite = false, suppressEdits = false, pasteIncoming = false;
+ // Variables used by startOperation/endOperation to track what
+ // happened during the operation.
+ var updateInput, userSelChange, changes, textChanged, selectionChanged,
+ 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 = getLine(0), updateMaxLine = false, maxLineChanged = true;
+ var pollingFast = false; // Ensures slowPoll doesn't cancel fastPoll
+ var goalColumn = null;
+
+ // 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", onScrollMain);
+ connect(scrollbar, "scroll", onScrollBar);
+ connect(scrollbar, "mousedown", function() {if (focused) setTimeout(focusInput, 0);});
+ var resizeHandler = connect(window, "resize", function() {
+ if (wrapper.parentNode) updateDisplay(true);
+ else resizeHandler();
+ }, 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);
+
+ function drag_(e) {
+ if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+ e_stop(e);
+ }
+ if (options.dragDrop) {
+ connect(scroller, "dragstart", onDragStart);
+ connect(scroller, "dragenter", drag_);
+ connect(scroller, "dragover", drag_);
+ connect(scroller, "drop", operation(onDrop));
+ }
+ connect(scroller, "paste", function(){focusInput(); fastPoll();});
+ connect(input, "paste", function(){pasteIncoming = true; fastPoll();});
+ connect(input, "cut", operation(function(){
+ if (!options.readOnly) replaceSelection("");
+ }));
+
+ // Needed to handle Tab key in KHTML
+ if (khtml) connect(sizer, "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);
+ else if (option == "keyMap") keyMapChanged();
+ else if (option == "tabindex") input.tabIndex = value;
+ if (option == "lineNumbers" || option == "gutter" || option == "firstLineNumber" ||
+ option == "theme" || option == "lineNumberFormatter") {
+ gutterChanged();
+ updateDisplay(true);
+ }
+ },
+ getOption: function(option) {return options[option];},
+ getMode: function() {return mode;},
+ 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();},
+ setHistory: function(histData) {
+ history = new History();
+ history.done = histData.done;
+ history.undone = histData.undone;
+ },
+ getHistory: function() {
+ function cp(arr) {
+ for (var i = 0, nw = [], nwelt; i < arr.length; ++i) {
+ nw.push(nwelt = []);
+ for (var j = 0, elt = arr[i]; j < elt.length; ++j) {
+ var old = [], cur = elt[j];
+ nwelt.push({start: cur.start, added: cur.added, old: old});
+ for (var k = 0; k < cur.old.length; ++k) old.push(hlText(cur.old[k]));
+ }
+ }
+ return nw;
+ }
+ return {done: cp(history.done), undone: cp(history.undone)};
+ },
+ matchBrackets: operation(function(){matchBrackets(true);}),
+ getTokenAt: operation(function(pos) {
+ pos = clipPos(pos);
+ return getLine(pos.line).getTokenAt(mode, getStateBefore(pos.line), options.tabSize, 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);
+ },
+ defaultTextHeight: function() { return textHeight(); },
+ 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,
+ getViewport: function() { return {from: showingFrom, to: showingTo};},
+ addWidget: function(pos, node, scroll, vert, horiz) {
+ pos = localCoords(clipPos(pos));
+ var top = pos.yBot, left = pos.x;
+ node.style.position = "absolute";
+ sizer.appendChild(node);
+ if (vert == "over") top = pos.y;
+ else if (vert == "near") {
+ var vspace = Math.max(scroller.offsetHeight, doc.height * textHeight()),
+ hspace = Math.max(sizer.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 = sizer.clientWidth - node.offsetWidth;
+ node.style.right = "0px";
+ } else {
+ if (horiz == "left") left = 0;
+ else if (horiz == "middle") left = (sizer.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, lineSep) {return getRange(clipPos(from), clipPos(to), lineSep);},
+
+ 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) scrollbar.scrollTop = scroller.scrollTop = y;
+ updateDisplay([]);
+ },
+ getScrollInfo: function() {
+ return {x: scroller.scrollLeft, y: scrollbar.scrollTop,
+ height: scrollbar.scrollHeight, width: scroller.scrollWidth};
+ },
+ scrollIntoView: function(pos) {
+ var coords = localCoords(pos ? clipPos(pos) : sel.inverted ? sel.from : sel.to);
+ scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
+ },
+
+ setSize: function(width, height) {
+ function interpret(val) {
+ val = String(val);
+ return /^\d+$/.test(val) ? val + "px" : val;
+ }
+ if (width != null) wrapper.style.width = interpret(width);
+ if (height != null) scroller.style.height = interpret(height);
+ instance.refresh();
+ },
+
+ operation: function(f){return operation(f)();},
+ compoundChange: function(f){return compoundChange(f);},
+ refresh: function(){
+ updateDisplay(true, null, lastScrollTop);
+ if (scrollbar.scrollHeight > lastScrollTop)
+ scrollbar.scrollTop = lastScrollTop;
+ },
+ 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 lineContent(line, wrapAt) {
+ if (!line.styles)
+ line.highlight(mode, line.stateAfter = getStateBefore(lineNo(line)), options.tabSize);
+ return line.getContent(options.tabSize, wrapAt, options.lineWrapping);
+ }
+
+ 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(lineSep) {
+ var text = [];
+ doc.iter(0, doc.size, function(line) { text.push(line.text); });
+ return text.join(lineSep || "\n");
+ }
+
+ function onScrollBar(e) {
+ if (Math.abs(scrollbar.scrollTop - lastScrollTop) > 1) {
+ lastScrollTop = scroller.scrollTop = scrollbar.scrollTop;
+ updateDisplay([]);
+ }
+ }
+
+ function onScrollMain(e) {
+ if (options.fixedGutter && gutter.style.left != scroller.scrollLeft + "px")
+ gutter.style.left = scroller.scrollLeft + "px";
+ if (Math.abs(scroller.scrollTop - lastScrollTop) > 1) {
+ lastScrollTop = scroller.scrollTop;
+ if (scrollbar.scrollTop != lastScrollTop)
+ scrollbar.scrollTop = lastScrollTop;
+ updateDisplay([]);
+ }
+ if (options.onScroll) options.onScroll(instance);
+ }
+
+ 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 == sizer && 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) onContextMenu(e);
+ return;
+ case 2:
+ if (start) setCursor(start.line, start.ch, true);
+ setTimeout(focusInput, 20);
+ e_preventDefault(e);
+ return;
+ }
+ // For button 1, if it was clicked inside the editor
+ // (posFromMouse returning non-null), we have to adjust the
+ // selection.
+ if (!start) {if (e_target(e) == scroller) e_preventDefault(e); return;}
+
+ if (!focused) onFocus();
+
+ var now = +new Date, type = "single";
+ if (lastDoubleClick && lastDoubleClick.time > now - 400 && posEq(lastDoubleClick.pos, start)) {
+ type = "triple";
+ e_preventDefault(e);
+ setTimeout(focusInput, 20);
+ selectLine(start.line);
+ } else if (lastClick && lastClick.time > now - 400 && posEq(lastClick.pos, start)) {
+ type = "double";
+ lastDoubleClick = {time: now, pos: start};
+ e_preventDefault(e);
+ var word = findWordAt(start);
+ setSelectionUser(word.from, word.to);
+ } else { lastClick = {time: now, pos: start}; }
+
+ function dragEnd(e2) {
+ if (webkit) scroller.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 last = start, going;
+ if (options.dragDrop && dragAndDrop && !options.readOnly && !posEq(sel.from, sel.to) &&
+ !posLess(start, sel.from) && !posLess(sel.to, start) && type == "single") {
+ // Let the drag handler handle this.
+ if (webkit) scroller.draggable = true;
+ var up = connect(document, "mouseup", operation(dragEnd), true);
+ var drop = connect(scroller, "drop", operation(dragEnd), true);
+ draggingText = true;
+ // IE's approach to draggable
+ if (scroller.dragDrop) scroller.dragDrop();
+ return;
+ }
+ e_preventDefault(e);
+ if (type == "single") setCursor(start.line, start.ch, true);
+
+ var startstart = sel.from, startend = sel.to;
+
+ function doSelect(cur) {
+ if (type == "single") {
+ setSelectionUser(start, cur);
+ } else if (type == "double") {
+ var word = findWordAt(cur);
+ if (posLess(cur, startstart)) setSelectionUser(word.from, startend);
+ else setSelectionUser(startstart, word.to);
+ } else if (type == "triple") {
+ if (posLess(cur, startstart)) setSelectionUser(startend, clipPos({line: cur.line, ch: 0}));
+ else setSelectionUser(startstart, clipPos({line: cur.line + 1, ch: 0}));
+ }
+ }
+
+ function extend(e) {
+ var cur = posFromMouse(e, true);
+ if (cur && !posEq(cur, last)) {
+ if (!focused) onFocus();
+ last = cur;
+ doSelect(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) doSelect(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);
+ e_preventDefault(e);
+ }
+ function onDrop(e) {
+ if (options.onDragEvent && options.onDragEvent(instance, addStop(e))) return;
+ e_preventDefault(e);
+ var pos = posFromMouse(e, true), files = e.dataTransfer.files;
+ if (!pos || options.readOnly) return;
+ if (files && files.length && window.FileReader && window.File) {
+ var n = files.length, text = Array(n), read = 0;
+ var loadFile = function(file, i) {
+ var reader = new FileReader;
+ reader.onload = function() {
+ text[i] = reader.result;
+ if (++read == n) {
+ pos = clipPos(pos);
+ operation(function() {
+ var end = replaceRange(text.join(""), pos, pos);
+ setSelectionUser(pos, end);
+ })();
+ }
+ };
+ reader.readAsText(file);
+ };
+ for (var i = 0; i < n; ++i) loadFile(files[i], i);
+ } else {
+ // Don't do a replace if the drop happened inside of the selected text.
+ if (draggingText && !(posLess(pos, sel.from) || posLess(sel.to, pos))) return;
+ 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 (e.dataTransfer.setDragImage)
+ e.dataTransfer.setDragImage(elt('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;
+ }
+ var maybeTransition;
+ 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;
+ var flipCtrlCmd = opera && mac;
+ if (name == null || e.altGraphKey) return false;
+ if (e_prop(e, "altKey")) name = "Alt-" + name;
+ if (e_prop(e, flipCtrlCmd ? "metaKey" : "ctrlKey")) name = "Ctrl-" + name;
+ if (e_prop(e, flipCtrlCmd ? "ctrlKey" : "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);
+ restartBlink();
+ if (ie_lt9) { 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);
+ restartBlink();
+ }
+ return handled;
+ }
+
+ var lastStoppedKey = null;
+ 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 (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 (opera && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
+ if (((opera && (!e.which || e.which < 10)) || 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 (scroller.className.search(/\bCodeMirror-focused\b/) == -1)
+ scroller.className += " CodeMirror-focused";
+ }
+ slowPoll();
+ restartBlink();
+ }
+ function onBlur() {
+ if (focused) {
+ if (options.onBlur) options.onBlur(instance);
+ focused = false;
+ if (bracketHighlighted)
+ operation(function(){
+ if (bracketHighlighted) { bracketHighlighted(); bracketHighlighted = null; }
+ })();
+ scroller.className = scroller.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;
+ var old = [];
+ doc.iter(from.line, to.line + 1, function(line) {
+ old.push(newHL(line.text, line.markedSpans));
+ });
+ if (history) {
+ history.addChange(from.line, newText.length, old);
+ while (history.done.length > options.undoDepth) history.done.shift();
+ }
+ var lines = updateMarkedSpans(hlSpans(old[0]), hlSpans(lst(old)), from.ch, to.ch, newText);
+ updateLinesNoUndo(from, to, lines, 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(newHL(line.text, line.markedSpans)); });
+ out.push({start: change.start, added: change.old.length, old: replaced});
+ var pos = {line: change.start + change.old.length - 1,
+ ch: editEnd(hlText(lst(replaced)), hlText(lst(change.old)))};
+ 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, lines, selFrom, selTo) {
+ if (suppressEdits) return;
+ var recomputeMaxLength = false, maxLineLength = maxLine.text.length;
+ if (!options.lineWrapping)
+ doc.iter(from.line, to.line + 1, function(line) {
+ if (!line.hidden && line.text.length == maxLineLength) {recomputeMaxLength = true; return true;}
+ });
+ if (from.line != to.line || lines.length > 1) gutterDirty = true;
+
+ var nlines = to.line - from.line, firstLine = getLine(from.line), lastLine = getLine(to.line);
+ var lastHL = lst(lines);
+
+ // First adjust the line structure
+ if (from.ch == 0 && to.ch == 0 && hlText(lastHL) == "") {
+ // This is a whole-line replace. Treated specially to make
+ // sure line objects move the way they are supposed to.
+ var added = [], prevLine = null;
+ for (var i = 0, e = lines.length - 1; i < e; ++i)
+ added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
+ lastLine.update(lastLine.text, hlSpans(lastHL));
+ if (nlines) doc.remove(from.line, nlines, callbacks);
+ if (added.length) doc.insert(from.line, added);
+ } else if (firstLine == lastLine) {
+ if (lines.length == 1) {
+ firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + firstLine.text.slice(to.ch), hlSpans(lines[0]));
+ } else {
+ for (var added = [], i = 1, e = lines.length - 1; i < e; ++i)
+ added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
+ added.push(new Line(hlText(lastHL) + firstLine.text.slice(to.ch), hlSpans(lastHL)));
+ firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
+ doc.insert(from.line + 1, added);
+ }
+ } else if (lines.length == 1) {
+ firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]) + lastLine.text.slice(to.ch), hlSpans(lines[0]));
+ doc.remove(from.line + 1, nlines, callbacks);
+ } else {
+ var added = [];
+ firstLine.update(firstLine.text.slice(0, from.ch) + hlText(lines[0]), hlSpans(lines[0]));
+ lastLine.update(hlText(lastHL) + lastLine.text.slice(to.ch), hlSpans(lastHL));
+ for (var i = 1, e = lines.length - 1; i < e; ++i)
+ added.push(new Line(hlText(lines[i]), hlSpans(lines[i])));
+ 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 + lines.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 + lines.length, function(line) {
+ var l = line.text;
+ if (!line.hidden && l.length > maxLineLength) {
+ maxLine = line; maxLineLength = l.length; maxLineChanged = true;
+ recomputeMaxLength = false;
+ }
+ });
+ if (recomputeMaxLength) updateMaxLine = true;
+ }
+
+ // Adjust frontier, schedule worker
+ frontier = Math.min(frontier, from.line);
+ startWorker(400);
+
+ var lendiff = lines.length - nlines - 1;
+ // Remember that these lines changed, for updating the display
+ changes.push({from: from.line, to: to.line + 1, diff: lendiff});
+ if (options.onChange) {
+ // Normalize lines to contain only strings, since that's what
+ // the change event handler expects
+ for (var i = 0; i < lines.length; ++i)
+ if (typeof lines[i] != "string") lines[i] = lines[i].text;
+ var changeObj = {from: from, to: to, text: lines};
+ 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(clipPos(selFrom), clipPos(selTo),
+ updateLine(sel.from.line), updateLine(sel.to.line));
+ }
+
+ function needsScrollbar() {
+ var realHeight = doc.height * textHeight() + 2 * paddingTop();
+ return realHeight * .99 > scroller.offsetHeight ? realHeight : false;
+ }
+
+ function updateVerticalScroll(scrollTop) {
+ var scrollHeight = needsScrollbar();
+ scrollbar.style.display = scrollHeight ? "block" : "none";
+ if (scrollHeight) {
+ scrollbarInner.style.height = sizer.style.minHeight = scrollHeight + "px";
+ scrollbar.style.height = scroller.clientHeight + "px";
+ if (scrollTop != null) {
+ scrollbar.scrollTop = scroller.scrollTop = scrollTop;
+ // 'Nudge' the scrollbar to work around a Webkit bug where,
+ // in some situations, we'd end up with a scrollbar that
+ // reported its scrollTop (and looked) as expected, but
+ // *behaved* as if it was still in a previous state (i.e.
+ // couldn't scroll up, even though it appeared to be at the
+ // bottom).
+ if (webkit) setTimeout(function() {
+ if (scrollbar.scrollTop != scrollTop) return;
+ scrollbar.scrollTop = scrollTop + (scrollTop ? -1 : 1);
+ scrollbar.scrollTop = scrollTop;
+ }, 0);
+ }
+ } else {
+ sizer.style.minHeight = "";
+ }
+ // Position the mover div to align with the current virtual scroll position
+ mover.style.top = displayOffset * textHeight() + "px";
+ }
+
+ function computeMaxLength() {
+ maxLine = getLine(0); maxLineChanged = true;
+ var maxLineLength = maxLine.text.length;
+ doc.iter(1, doc.size, function(line) {
+ var l = line.text;
+ if (!line.hidden && l.length > maxLineLength) {
+ maxLineLength = l.length; maxLine = line;
+ }
+ });
+ updateMaxLine = false;
+ }
+
+ 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 += lst(code).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 : lst(code).length;
+ var newSel = computeSel({line: from.line + code.length - 1, ch: endch});
+ updateLines(from, to, code, newSel.from, newSel.to);
+ }
+
+ function getRange(from, to, lineSep) {
+ 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(lineSep || "\n");
+ }
+ function getSelection(lineSep) {
+ return getRange(sel.from, sel.to, lineSep);
+ }
+
+ function slowPoll() {
+ if (pollingFast) return;
+ poll.set(options.pollInterval, function() {
+ readInput();
+ if (focused) slowPoll();
+ });
+ }
+ function fastPoll() {
+ var missed = false;
+ pollingFast = true;
+ function p() {
+ var changed = readInput();
+ if (!changed && !missed) {missed = true; poll.set(60, p);}
+ else {pollingFast = false; slowPoll();}
+ }
+ 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 (!focused || hasSelection(input) || options.readOnly) return false;
+ var text = input.value;
+ if (text == prevInput) return false;
+ if (!nestedOperation) startOperation();
+ 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) && !pasteIncoming)
+ 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");
+ if (text.length > 1000) { input.value = prevInput = ""; }
+ else prevInput = text;
+ if (!nestedOperation) endOperation();
+ pasteIncoming = false;
+ return true;
+ }
+ function resetInput(user) {
+ if (!posEq(sel.from, sel.to)) {
+ prevInput = "";
+ input.value = getSelection();
+ if (focused) selectInput(input);
+ } else if (user) prevInput = input.value = "";
+ }
+
+ function focusInput() {
+ if (options.readOnly != "nocursor") input.focus();
+ }
+
+ function scrollCursorIntoView() {
+ var coords = calculateCursorCoords();
+ scrollIntoView(coords.x, coords.y, coords.x, coords.yBot);
+ if (!focused) return;
+ var box = sizer.getBoundingClientRect(), doScroll = null;
+ if (coords.y + box.top < 0) doScroll = true;
+ else if (coords.y + box.top + textHeight() > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
+ if (doScroll != null) {
+ var hidden = cursor.style.display == "none";
+ if (hidden) {
+ cursor.style.display = "";
+ cursor.style.left = coords.x + "px";
+ cursor.style.top = (coords.y - displayOffset) + "px";
+ }
+ cursor.scrollIntoView(doScroll);
+ if (hidden) cursor.style.display = "none";
+ }
+ }
+ function calculateCursorCoords() {
+ var cursor = localCoords(sel.inverted ? sel.from : sel.to);
+ var x = options.lineWrapping ? Math.min(cursor.x, lineSpace.offsetWidth) : cursor.x;
+ return {x: x, y: cursor.y, yBot: cursor.yBot};
+ }
+ function scrollIntoView(x1, y1, x2, y2) {
+ var scrollPos = calculateScrollPos(x1, y1, x2, y2);
+ if (scrollPos.scrollLeft != null) {scroller.scrollLeft = scrollPos.scrollLeft;}
+ if (scrollPos.scrollTop != null) {scrollbar.scrollTop = scroller.scrollTop = scrollPos.scrollTop;}
+ }
+ function calculateScrollPos(x1, y1, x2, y2) {
+ var pl = paddingLeft(), pt = paddingTop();
+ y1 += pt; y2 += pt; x1 += pl; x2 += pl;
+ var screen = scroller.clientHeight, screentop = scrollbar.scrollTop, result = {};
+ var docBottom = needsScrollbar() || Infinity;
+ var atTop = y1 < pt + 10, atBottom = y2 + pt > docBottom - 10;
+ if (y1 < screentop) result.scrollTop = atTop ? 0 : Math.max(0, y1);
+ else if (y2 > screentop + screen) result.scrollTop = (atBottom ? docBottom : y2) - screen;
+
+ 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;
+ result.scrollLeft = Math.max(0, x1 - 10 - gutterw);
+ } else if (x2 > screenw + screenleft - 3) {
+ result.scrollLeft = x2 + 10 - screenw;
+ }
+ return result;
+ }
+
+ function visibleLines(scrollTop) {
+ var lh = textHeight(), top = (scrollTop != null ? scrollTop : scrollbar.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, scrollTop) {
+ if (!scroller.clientWidth) {
+ showingFrom = showingTo = displayOffset = 0;
+ return;
+ }
+ // Compute the new visible window
+ // If scrollTop is specified, use that to determine which lines
+ // to render instead of the current scrollbar position.
+ var visible = visibleLines(scrollTop);
+ // Bail out if the visible area is already rendered and nothing changed.
+ if (changes !== true && changes.length == 0 && visible.from > showingFrom && visible.to < showingTo) {
+ updateVerticalScroll(scrollTop);
+ 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) {
+ updateVerticalScroll(scrollTop);
+ 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 = "";
+
+ 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;
+ if (from != showingFrom || to != showingTo && options.onViewportChange)
+ setTimeout(function(){
+ if (options.onViewportChange) options.onViewportChange(instance, from, to);
+ });
+ showingFrom = from; showingTo = to;
+ displayOffset = heightAtLine(doc, from);
+ startWorker(100);
+
+ // 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() {
+ var curNode = lineDiv.firstChild, heightChanged = false;
+ doc.iter(showingFrom, showingTo, function(line) {
+ // Work around bizarro IE7 bug where, sometimes, our curNode
+ // is magically replaced with a new node in the DOM, leaving
+ // us with a reference to an orphan (nextSibling-less) node.
+ if (!curNode) return;
+ if (!line.hidden) {
+ var height = Math.round(curNode.offsetHeight / th) || 1;
+ if (line.height != height) {
+ updateLineHeight(line, height);
+ gutterDirty = heightChanged = true;
+ }
+ }
+ curNode = curNode.nextSibling;
+ });
+ return heightChanged;
+ }
+
+ if (options.lineWrapping) checkHeights();
+
+ 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();
+ }
+ updateVerticalScroll(scrollTop);
+ 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) {
+ function killNode(node) {
+ var tmp = node.nextSibling;
+ node.parentNode.removeChild(node);
+ return tmp;
+ }
+ // The first pass removes the DOM nodes that aren't intact.
+ if (!intact.length) removeChildren(lineDiv);
+ else {
+ 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;
+ doc.iter(from, to, function(line) {
+ if (nextIntact && nextIntact.to == j) nextIntact = intact.shift();
+ if (!nextIntact || nextIntact.from > j) {
+ if (line.hidden) var lineElement = elt("pre");
+ else {
+ var lineElement = lineContent(line);
+ if (line.className) lineElement.className = line.className;
+ // Kludge to make sure the styled element lies behind the selection (by z-index)
+ if (line.bgClassName) {
+ var pre = elt("pre", "\u00a0", line.bgClassName, "position: absolute; left: 0; right: 0; top: 0; bottom: 0; z-index: -2");
+ lineElement = elt("div", [pre, lineElement], null, "position: relative");
+ }
+ }
+ lineDiv.insertBefore(lineElement, 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 fragment = document.createDocumentFragment(), i = showingFrom, normalNode;
+ doc.iter(showingFrom, Math.max(showingTo, showingFrom + 1), function(line) {
+ if (line.hidden) {
+ fragment.appendChild(elt("pre"));
+ } else {
+ var marker = line.gutterMarker;
+ var text = options.lineNumbers ? options.lineNumberFormatter(i + options.firstLineNumber) : null;
+ if (marker && marker.text)
+ text = marker.text.replace("%N%", text != null ? text : "");
+ else if (text == null)
+ text = "\u00a0";
+ var markerElement = fragment.appendChild(elt("pre", null, marker && marker.style));
+ markerElement.innerHTML = text;
+ for (var j = 1; j < line.height; ++j) {
+ markerElement.appendChild(elt("br"));
+ markerElement.appendChild(document.createTextNode("\u00a0"));
+ }
+ if (!marker) normalNode = i;
+ }
+ ++i;
+ });
+ gutter.style.display = "none";
+ removeChildrenAndAdd(gutterText, fragment);
+ // Make sure scrolling doesn't cause number gutter size to pop
+ if (normalNode != null && options.lineNumbers) {
+ var node = gutterText.childNodes[normalNode - showingFrom];
+ var minwidth = String(doc.size).length, val = eltText(node.firstChild), 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, fragment = document.createDocumentFragment();
+ var clientWidth = lineSpace.clientWidth || lineSpace.offsetWidth;
+ var clientHeight = lineSpace.clientHeight || lineSpace.offsetHeight;
+ var add = function(left, top, right, height) {
+ var rstyle = quirksMode ? "width: " + (!right ? clientWidth : clientWidth - right - left) + "px"
+ : "right: " + right + "px";
+ fragment.appendChild(elt("div", null, "CodeMirror-selected", "position: absolute; left: " + left +
+ "px; top: " + top + "px; " + rstyle + "; height: " + height + "px"));
+ };
+ 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);
+ removeChildrenAndAdd(selectionDiv, fragment);
+ 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;
+ }
+ 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") {
+ var screen = Math.min(scroller.clientHeight, window.innerHeight || document.documentElement.clientHeight);
+ var target = coordsChar(pos.x, pos.y + screen * dir);
+ } else if (unit == "line") {
+ var th = textHeight();
+ var target = coordsChar(pos.x, pos.y + .5 * th + dir * th);
+ }
+ if (unit == "page") scrollbar.scrollTop += localCoords(target, true).y - pos.y;
+ setCursor(target.line, target.ch, true);
+ goalColumn = pos.x;
+ }
+
+ function findWordAt(pos) {
+ var line = getLine(pos.line).text;
+ var start = pos.ch, end = pos.ch;
+ if (line) {
+ if (pos.after === false || end == line.length) --start; else ++end;
+ var startChar = line.charAt(start);
+ var check = isWordChar(startChar) ? isWordChar :
+ /\s/.test(startChar) ? function(ch) {return /\s/.test(ch);} :
+ function(ch) {return !/\s/.test(ch) && isWordChar(ch);};
+ while (start > 0 && check(line.charAt(start - 1))) --start;
+ while (end < line.length && check(line.charAt(end))) ++end;
+ }
+ return {from: {line: pos.line, ch: start}, to: {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 == "smart") {
+ indentation = mode.indent(state, line.text.slice(curSpaceString.length), line.text);
+ if (indentation == Pass) how = "prev";
+ }
+ if (how == "prev") {
+ if (n) indentation = getLine(n-1).indentation(options.tabSize);
+ else indentation = 0;
+ }
+ 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;
+
+ var indentString = "", pos = 0;
+ if (options.indentWithTabs)
+ for (var i = Math.floor(indentation / options.tabSize); i; --i) {pos += options.tabSize; indentString += "\t";}
+ if (pos < indentation) indentString += spaceStr(indentation - pos);
+
+ if (indentString != curSpaceString)
+ replaceRange(indentString, {line: n, ch: 0}, {line: n, ch: curSpaceString.length});
+ line.stateAfter = null;
+ }
+
+ function loadMode() {
+ mode = CodeMirror.getMode(options, options.mode);
+ doc.iter(0, doc.size, function(line) { line.stateAfter = null; });
+ frontier = 0;
+ startWorker(100);
+ }
+ 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.minWidth = widthForcer.style.left = "";
+ } else {
+ wrapper.className = wrapper.className.replace(" CodeMirror-wrap", "");
+ computeMaxLength();
+ doc.iter(0, doc.size, function(line) {
+ if (line.height != 1 && !line.hidden) updateLineHeight(line, 1);
+ });
+ }
+ changes.push({from: 0, to: doc.size});
+ }
+ function themeChanged() {
+ scroller.className = scroller.className.replace(/\s*cm-s-\S+/g, "") +
+ options.theme.replace(/(^|\s)\s*/g, " cm-s-");
+ }
+ function keyMapChanged() {
+ var style = keyMap[options.keyMap].style;
+ wrapper.className = wrapper.className.replace(/\s*cm-keymap-\S+/g, "") +
+ (style ? " cm-keymap-" + style : "");
+ }
+
+ function TextMarker(type, style) { this.lines = []; this.type = type; if (style) this.style = style; }
+ TextMarker.prototype.clear = operation(function() {
+ var min, max;
+ for (var i = 0; i < this.lines.length; ++i) {
+ var line = this.lines[i];
+ var span = getMarkedSpanFor(line.markedSpans, this);
+ if (span.from != null) min = lineNo(line);
+ if (span.to != null) max = lineNo(line);
+ line.markedSpans = removeMarkedSpan(line.markedSpans, span);
+ }
+ if (min != null) changes.push({from: min, to: max + 1});
+ this.lines.length = 0;
+ this.explicitlyCleared = true;
+ });
+ TextMarker.prototype.find = function() {
+ var from, to;
+ for (var i = 0; i < this.lines.length; ++i) {
+ var line = this.lines[i];
+ var span = getMarkedSpanFor(line.markedSpans, this);
+ if (span.from != null || span.to != null) {
+ var found = lineNo(line);
+ if (span.from != null) from = {line: found, ch: span.from};
+ if (span.to != null) to = {line: found, ch: span.to};
+ }
+ }
+ if (this.type == "bookmark") return from;
+ return from && {from: from, to: to};
+ };
+
+ function markText(from, to, className, options) {
+ from = clipPos(from); to = clipPos(to);
+ var marker = new TextMarker("range", className);
+ if (options) for (var opt in options) if (options.hasOwnProperty(opt))
+ marker[opt] = options[opt];
+ var curLine = from.line;
+ doc.iter(curLine, to.line + 1, function(line) {
+ var span = {from: curLine == from.line ? from.ch : null,
+ to: curLine == to.line ? to.ch : null,
+ marker: marker};
+ line.markedSpans = (line.markedSpans || []).concat([span]);
+ marker.lines.push(line);
+ ++curLine;
+ });
+ changes.push({from: from.line, to: to.line + 1});
+ return marker;
+ }
+
+ function setBookmark(pos) {
+ pos = clipPos(pos);
+ var marker = new TextMarker("bookmark"), line = getLine(pos.line);
+ history.addChange(pos.line, 1, [newHL(line.text, line.markedSpans)], true);
+ var span = {from: pos.ch, to: pos.ch, marker: marker};
+ line.markedSpans = (line.markedSpans || []).concat([span]);
+ marker.lines.push(line);
+ return marker;
+ }
+
+ function findMarksAt(pos) {
+ pos = clipPos(pos);
+ var markers = [], spans = getLine(pos.line).markedSpans;
+ if (spans) for (var i = 0; i < spans.length; ++i) {
+ var span = spans[i];
+ if ((span.from == null || span.from <= pos.ch) &&
+ (span.to == null || span.to >= pos.ch))
+ markers.push(span.marker);
+ }
+ 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;
+ if (!options.lineWrapping) {
+ if (hidden && line.text.length == maxLine.text.length) {
+ updateMaxLine = true;
+ } else if (!hidden && line.text.length > maxLine.text.length) {
+ maxLine = line; updateMaxLine = false;
+ }
+ }
+ 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 measureLine(line, ch) {
+ if (ch == 0) return {top: 0, left: 0};
+ var pre = lineContent(line, ch);
+ removeChildrenAndAdd(measure, pre);
+ var anchor = pre.anchor;
+ var top = anchor.offsetTop, left = anchor.offsetLeft;
+ // Older IEs report zero offsets for spans directly after a wrap
+ if (ie && top == 0 && left == 0) {
+ var backup = elt("span", "x");
+ anchor.parentNode.insertBefore(backup, anchor.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) {
+ var th = textHeight(), cw = charWidth(), heightPos = displayOffset + Math.floor(y / th);
+ if (heightPos < 0) return {line: 0, ch: 0};
+ 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};
+ var wrongLine = false;
+ function getX(len) {
+ var sp = measureLine(lineObj, len);
+ if (tw) {
+ var off = Math.round(sp.top / th);
+ wrongLine = off != innerOff;
+ 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) {
+ var after = x - fromX < toX - x;
+ return {line: lineNo, ch: after ? from : to, after: after};
+ }
+ var middle = Math.ceil((from + to) / 2), middleX = getX(middle);
+ if (middleX > x) {to = middle; toX = middleX; if (wrongLine) toX += 1000; }
+ 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, measurePre;
+ function textHeight() {
+ if (measurePre == null) {
+ measurePre = elt("pre");
+ for (var i = 0; i < 49; ++i) {
+ measurePre.appendChild(document.createTextNode("x"));
+ measurePre.appendChild(elt("br"));
+ }
+ measurePre.appendChild(document.createTextNode("x"));
+ }
+ var offsetHeight = lineDiv.clientHeight;
+ if (offsetHeight == cachedHeightFor) return cachedHeight;
+ cachedHeightFor = offsetHeight;
+ removeChildrenAndAdd(measure, measurePre.cloneNode(true));
+ cachedHeight = measure.firstChild.offsetHeight / 50 || 1;
+ removeChildren(measure);
+ return cachedHeight;
+ }
+ var cachedWidth, cachedWidthFor = 0;
+ function charWidth() {
+ if (scroller.clientWidth == cachedWidthFor) return cachedWidth;
+ cachedWidthFor = scroller.clientWidth;
+ var anchor = elt("span", "x");
+ var pre = elt("pre", [anchor]);
+ removeChildrenAndAdd(measure, pre);
+ return (cachedWidth = anchor.offsetWidth || 10);
+ }
+ 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);
+ }
+ var detectingSelectAll;
+ function onContextMenu(e) {
+ var pos = posFromMouse(e), scrollPos = scrollbar.scrollTop;
+ if (!pos || 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);";
+ focusInput();
+ resetInput(true);
+ // Adds "Select all" to context menu in FF
+ if (posEq(sel.from, sel.to)) input.value = prevInput = " ";
+
+ function rehide() {
+ inputDiv.style.position = "relative";
+ input.style.cssText = oldCSS;
+ if (ie_lt9) scrollbar.scrollTop = scrollPos;
+ slowPoll();
+
+ // Try to detect the user choosing select-all
+ if (input.selectionStart != null) {
+ clearTimeout(detectingSelectAll);
+ var extval = input.value = " " + (posEq(sel.from, sel.to) ? "" : input.value), i = 0;
+ prevInput = " ";
+ input.selectionStart = 1; input.selectionEnd = extval.length;
+ detectingSelectAll = setTimeout(function poll(){
+ if (prevInput == " " && input.selectionStart == 0)
+ operation(commands.selectAll)(instance);
+ else if (i++ < 10) detectingSelectAll = setTimeout(poll, 500);
+ else resetInput();
+ }, 200);
+ }
+ }
+
+ 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";
+ }, options.cursorBlinkRate);
+ }
+
+ 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] != 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 pos = findStartLine(n), state = pos && getLine(pos-1).stateAfter;
+ if (!state) state = startState(mode);
+ else state = copyState(mode, state);
+ doc.iter(pos, n, function(line) {
+ line.process(mode, state, options.tabSize);
+ line.stateAfter = (pos == n - 1 || pos % 5 == 0) ? copyState(mode, state) : null;
+ });
+ return state;
+ }
+ function highlightWorker() {
+ if (frontier >= showingTo) return;
+ var end = +new Date + options.workTime, state = copyState(mode, getStateBefore(frontier));
+ var startFrontier = frontier;
+ doc.iter(frontier, showingTo, function(line) {
+ if (frontier >= showingFrom) { // Visible
+ line.highlight(mode, state, options.tabSize);
+ line.stateAfter = copyState(mode, state);
+ } else {
+ line.process(mode, state, options.tabSize);
+ line.stateAfter = frontier % 5 == 0 ? copyState(mode, state) : null;
+ }
+ ++frontier;
+ if (+new Date > end) {
+ startWorker(options.workDelay);
+ return true;
+ }
+ });
+ if (showingTo > startFrontier && frontier >= showingFrom)
+ operation(function() {changes.push({from: startFrontier, to: frontier});})();
+ }
+ function startWorker(time) {
+ if (frontier < showingTo)
+ highlight.set(time, 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() {
+ if (updateMaxLine) computeMaxLength();
+ if (maxLineChanged && !options.lineWrapping) {
+ var cursorWidth = widthForcer.offsetWidth, left = measureLine(maxLine, maxLine.text.length).left;
+ if (!ie_lt8) {
+ widthForcer.style.left = left + "px";
+ lineSpace.style.minWidth = (left + cursorWidth) + "px";
+ }
+ maxLineChanged = false;
+ }
+ var newScrollPos, updated;
+ if (selectionChanged) {
+ var coords = calculateCursorCoords();
+ newScrollPos = calculateScrollPos(coords.x, coords.y, coords.x, coords.yBot);
+ }
+ if (changes.length || newScrollPos && newScrollPos.scrollTop != null)
+ updated = updateDisplay(changes, true, newScrollPos && newScrollPos.scrollTop);
+ if (!updated) {
+ if (selectionChanged) updateSelection();
+ if (gutterDirty) updateGutter();
+ }
+ if (newScrollPos) scrollCursorIntoView();
+ if (selectionChanged) restartBlink();
+
+ if (focused && (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 sc = selectionChanged, cbs = callbacks; // these can be reset by callbacks
+ if (textChanged && options.onChange && instance)
+ options.onChange(instance, textChanged);
+ if (sc && options.onCursorActivity)
+ options.onCursorActivity(instance);
+ 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];
+ for (var i = 0; i < initHooks.length; ++i) initHooks[i](instance);
+ 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,
+ onViewportChange: null,
+ onGutterClick: null,
+ onUpdate: null,
+ onFocus: null, onBlur: null, onScroll: null,
+ matchBrackets: false,
+ cursorBlinkRate: 530,
+ workTime: 100,
+ workDelay: 200,
+ pollInterval: 100,
+ undoDepth: 40,
+ tabindex: null,
+ autofocus: null,
+ lineNumberFormatter: function(integer) { return integer; }
+ };
+
+ var ios = /AppleWebKit/.test(navigator.userAgent) && /Mobil
<TRUNCATED>