This is the function that produces an editor instance. Its closure is used to store the editor state.
973878
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;
    // 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", 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();
        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);
      },
      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};
      },
      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 (scrollbar.scrollTop != lastScrollTop) {
        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 (scroller.scrollTop != lastScrollTop) {
        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) { 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))
        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();
      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});
    }

    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 = Infinity, max = -Infinity;
      for (var i = 0; i < this.lines.length; ++i) {
        var line = this.lines[i];
        var span = getMarkedSpanFor(line.markedSpans, this, true);
        if (span.from != null || span.to != null) {
          var lineN = lineNo(line);
          min = Math.min(min, lineN); max = Math.max(max, lineN);
        }
      }
      if (min != Infinity)
        changes.push({from: min, to: max + 1});
      this.lines.length = 0;
    });
    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 = [])).push(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);
      var span = {from: pos.ch, to: pos.ch, marker: marker};
      (line.markedSpans || (line.markedSpans = [])).push(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 wbr = options.lineWrapping && ch < line.text.length &&
                spanAffectsWrapping.test(line.text.slice(ch - 1, ch + 1));
      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];
    return instance;
  }
240191
def save(self):
        
        e = self.editor

        self._style = e.current_style
        self._show_line_numbers = e.show_line_numbers
        self._highlight_search = e.highlight_search
        self._show_ruler = e.show_ruler
        self._relative_number = e.relative_number
        self._cursorcolumn = e.cursorcolumn
        self._cursorline = e.cursorline
        self._colorcolumn = e.colorcolumn
1288177
function() {
			this._.cache = {};
			this.isFake = 0;

			var editor = this.root.editor;

			// Invalidate any fake selection available in the editor.
			if ( editor && editor._.fakeSelection ) {
				// Test whether this selection is the one that was
				// faked or its clone.
				if ( this.rev == editor._.fakeSelection.rev ) {
					delete editor._.fakeSelection;

					removeHiddenSelectionContainer( editor );
				}
				// jshint ignore:start
				// TODO after #9786 use commented out lines instead of console.log.
				else { // %REMOVE_LINE%
					window.console && console.log( 'Wrong selection instance resets fake selection.' ); // %REMOVE_LINE%
				} // %REMOVE_LINE%
				// else // %REMOVE_LINE%
				//	CKEDITOR.debug.error( 'Wrong selection instance resets fake selection.', CKEDITOR.DEBUG_CRITICAL ); // %REMOVE_LINE%
				// jshint ignore:end
			}

			this.rev = nextRev++;
		}
1285327
def createEditor(self, delegate, parent, option):
        
        return SnFloatCtiEditor(self, delegate, self.precision, parent=parent)
1168111
function Editor(el, model) {
  EditorInterface.call(this);
  this.el_ = el;

  // TODO: Use shadow DOM.
  _.assign(this.el_.style, constants.editorStyle);

  // Register input handlers.
  this.boundHandleMouseMove_ = this.handleMouseMove_.bind(this);
  document.addEventListener('keypress', this.handleKeyPress_.bind(this));
  document.addEventListener('keydown', this.handleKeyDown_.bind(this));
  document.addEventListener('mousedown', this.handleMouseDown_.bind(this));
  document.addEventListener('mouseup', this.handleMouseUp_.bind(this));
  window.addEventListener('blur', this.blur.bind(this));

  this.reset(model);
}
956177
function( editor )
		{
			var hr = editor.document.createElement( 'hr' ),
				range = new CKEDITOR.dom.range( editor.document );

			editor.insertElement( hr );

			// If there's nothing or a non-editable block followed by, establish a new paragraph
			// to make sure cursor is not trapped.
			range.moveToPosition( hr, CKEDITOR.POSITION_AFTER_END );
			var next = hr.getNext();
			if ( !next || next.type == CKEDITOR.NODE_ELEMENT && !next.isEditable() )
				range.fixBlock( true, editor.config.enterMode == CKEDITOR.ENTER_DIV ? 'div' : 'p'  );

			range.select();
		}
905235
function() {
			var editor = this,
				element = editor.element,
				form = new CKEDITOR.dom.element( element.$.form );

			// If are replacing a textarea, we must
			if ( element.is( 'textarea' ) ) {
				if ( form ) {
					form.on( 'submit', onSubmit );

					// Check if there is no element/elements input with name == "submit".
					// If they exists they will overwrite form submit function (form.$.submit).
					// If form.$.submit is overwritten we can not do anything with it.
					if ( isFunction( form.$.submit ) ) {
						// Setup the submit function because it doesn't fire the
						// "submit" event.
						form.$.submit = CKEDITOR.tools.override( form.$.submit, function( originalSubmit ) {
							return function() {
								onSubmit();

								// For IE, the DOM submit function is not a
								// function, so we need third check.
								if ( originalSubmit.apply )
									originalSubmit.apply( this );
								else
									originalSubmit();
							};
						} );
					}

					// Remove 'submit' events registered on form element before destroying.(#3988)
					editor.on( 'destroy', function() {
						form.removeListener( 'submit', onSubmit );
					} );
				}
			}

			function onSubmit( evt ) {
				editor.updateElement();

				// #8031 If textarea had required attribute and editor is empty fire 'required' event and if
				// it was cancelled, prevent submitting the form.
				if ( editor._.required && !element.getValue() && editor.fire( 'required' ) === false ) {
					// When user press save button event (evt) is undefined (see save plugin).
					// This method works because it throws error so originalSubmit won't be called.
					// Also this error won't be shown because it will be caught in save plugin.
					evt.data.preventDefault();
				}
			}

			function isFunction( f ) {
				// For IE8 typeof fun == object so we cannot use it.
				return !!( f && f.call && f.apply );
			}
		}
1279370
function( editor, output ) {
			this.getHolderElement = function() {
				var holder = this._.holder;

				if ( !holder ) {
					if ( this.isFramed ) {
						var iframe = this.document.getById( this.id + '_frame' ),
							parentDiv = iframe.getParent(),
							doc = iframe.getFrameDocument();

						// Make it scrollable on iOS. (#8308)
						CKEDITOR.env.iOS && parentDiv.setStyles( {
							'overflow': 'scroll',
							'-webkit-overflow-scrolling': 'touch'
						} );

						var onLoad = CKEDITOR.tools.addFunction( CKEDITOR.tools.bind( function( ev ) {
							this.isLoaded = true;
							if ( this.onLoad )
								this.onLoad();
						}, this ) );

						doc.write( frameDocTpl.output( CKEDITOR.tools.extend( {
							css: CKEDITOR.tools.buildStyleHtml( this.css ),
							onload: 'window.parent.CKEDITOR.tools.callFunction(' + onLoad + ');'
						}, data ) ) );

						var win = doc.getWindow();

						// Register the CKEDITOR global.
						win.$.CKEDITOR = CKEDITOR;

						// Arrow keys for scrolling is only preventable with 'keypress' event in Opera (#4534).
						doc.on( 'keydown', function( evt ) {
							var keystroke = evt.data.getKeystroke(),
								dir = this.document.getById( this.id ).getAttribute( 'dir' );

							// Delegate key processing to block.
							if ( this._.onKeyDown && this._.onKeyDown( keystroke ) === false ) {
								evt.data.preventDefault();
								return;
							}

							// ESC/ARROW-LEFT(ltr) OR ARROW-RIGHT(rtl)
							if ( keystroke == 27 || keystroke == ( dir == 'rtl' ? 39 : 37 ) ) {
								if ( this.onEscape && this.onEscape( keystroke ) === false )
									evt.data.preventDefault();
							}
						}, this );

						holder = doc.getBody();
						holder.unselectable();
						CKEDITOR.env.air && CKEDITOR.tools.callFunction( onLoad );
					} else
						holder = this.document.getById( this.id );

					this._.holder = holder;
				}

				return holder;
			};

			var data = {
				editorId: editor.id,
				id: this.id,
				langCode: editor.langCode,
				dir: editor.lang.dir,
				cls: this.className,
				frame: '',
				env: CKEDITOR.env.cssClass,
				'z-index': editor.config.baseFloatZIndex + 1
			};

			if ( this.isFramed ) {
				// With IE, the custom domain has to be taken care at first,
				// for other browers, the 'src' attribute should be left empty to
				// trigger iframe's 'load' event.
				var src =
					CKEDITOR.env.air ? 'javascript:void(0)' :
					CKEDITOR.env.ie ? 'javascript:void(function(){' + encodeURIComponent(
						'document.open();' +
						// In IE, the document domain must be set any time we call document.open().
						'(' + CKEDITOR.tools.fixDomain + ')();' +
						'document.close();'
					) + '}())' :
					'';

				data.frame = frameTpl.output( {
					id: this.id + '_frame',
					src: src
				} );
			}

			var html = panelTpl.output( data );

			if ( output )
				output.push( html );

			return html;
		}
750755
function bindEditor(fragment) {
    saveBreakHold();
    if (fragment) {
      editor.$name.text(fragment._href);
      if (fragment._holdUpdates) {
        editText(fragment._holdText);
      }
      else {
        editText(fragment._hdr + fragment._txt);
      }
      editor.binding = fragment._href;
    }
    else {
      editor.$name.text('');
      editText('');
      editor.binding = '';
    }
  }
1239764
function( editor ) {
			var genericDefinition = CKEDITOR.plugins.indent.genericDefinition;

			// Register generic commands.
			setupGenericListeners( editor, editor.addCommand( 'indent', new genericDefinition( true ) ) );
			setupGenericListeners( editor, editor.addCommand( 'outdent', new genericDefinition() ) );

			// Create and register toolbar button if possible.
			if ( editor.ui.addButton ) {
				editor.ui.addButton( 'Indent', {
					label: editor.lang.indent.indent,
					command: 'indent',
					directional: true,
					toolbar: 'indent,20'
				} );

				editor.ui.addButton( 'Outdent', {
					label: editor.lang.indent.outdent,
					command: 'outdent',
					directional: true,
					toolbar: 'indent,10'
				} );
			}

			// Register dirChanged listener.
			editor.on( 'dirChanged', function( evt ) {
				var range = editor.createRange(),
					dataNode = evt.data.node;

				range.setStartBefore( dataNode );
				range.setEndAfter( dataNode );

				var walker = new CKEDITOR.dom.walker( range ),
					node;

				while ( ( node = walker.next() ) ) {
					if ( node.type == CKEDITOR.NODE_ELEMENT ) {
						// A child with the defined dir is to be ignored.
						if ( !node.equals( dataNode ) && node.getDirection() ) {
							range.setStartAfter( node );
							walker = new CKEDITOR.dom.walker( range );
							continue;
						}

						// Switch alignment classes.
						var classes = editor.config.indentClasses;
						if ( classes ) {
							var suffix = ( evt.data.dir == 'ltr' ) ? [ '_rtl', '' ] : [ '', '_rtl' ];
							for ( var i = 0; i < classes.length; i++ ) {
								if ( node.hasClass( classes[ i ] + suffix[ 0 ] ) ) {
									node.removeClass( classes[ i ] + suffix[ 0 ] );
									node.addClass( classes[ i ] + suffix[ 1 ] );
								}
							}
						}

						// Switch the margins.
						var marginLeft = node.getStyle( 'margin-right' ),
							marginRight = node.getStyle( 'margin-left' );

						marginLeft ? node.setStyle( 'margin-left', marginLeft ) : node.removeStyle( 'margin-left' );
						marginRight ? node.setStyle( 'margin-right', marginRight ) : node.removeStyle( 'margin-right' );
					}
				}
			} );
		}
755660
function initPlugin( editor ) {
		// Configurables
		var config = editor.config,
			triggerOffset = config.magicline_triggerOffset || 30,
			enterMode = config.enterMode,
			that = {
				// Global stuff is being initialized here.
				editor: editor,
				enterMode: enterMode,
				triggerOffset: triggerOffset,
				holdDistance: 0 | triggerOffset * ( config.magicline_holdDistance || 0.5 ),
				boxColor: config.magicline_color || '#ff0000',
				rtl: config.contentsLangDirection == 'rtl',
				tabuList: [ 'data-cke-hidden-sel' ].concat( config.magicline_tabuList || [] ),
				triggers: config.magicline_everywhere ? DTD_BLOCK : { table: 1, hr: 1, div: 1, ul: 1, ol: 1, dl: 1, form: 1, blockquote: 1 }
			},
			scrollTimeout, checkMouseTimeoutPending, checkMouseTimeout, checkMouseTimer;

		// %REMOVE_START%
		// Internal DEBUG uses tools located in the topmost window.

		// (#9701) Due to security limitations some browsers may throw
		// errors when accessing window.top object. Do it safely first then.
		try {
			that.debug = window.top.DEBUG;
		}
		catch ( e ) {}

		that.debug = that.debug || {
			groupEnd: function() {},
			groupStart: function() {},
			log: function() {},
			logElements: function() {},
			logElementsEnd: function() {},
			logEnd: function() {},
			mousePos: function() {},
			showHidden: function() {},
			showTrigger: function() {},
			startTimer: function() {},
			stopTimer: function() {}
		};
		// %REMOVE_END%

		// Simple irrelevant elements filter.
		that.isRelevant = function( node ) {
			return isHtml( node ) 			// 	-> Node must be an existing HTML element.
				&& !isLine( that, node ) 	// 	-> Node can be neither the box nor its child.
				&& !isFlowBreaker( node ); 	// 	-> Node can be neither floated nor positioned nor aligned.
		};

		editor.on( 'contentDom', addListeners, this );

		function addListeners() {
			var editable = editor.editable(),
				doc = editor.document,
				win = editor.window,
				listener;

			// Global stuff is being initialized here.
			extend( that, {
				editable: editable,
				inInlineMode: editable.isInline(),
				doc: doc,
				win: win,
				hotNode: null
			}, true );

			// This is the boundary of the editor. For inline the boundary is editable itself.
			// For classic (`iframe`-based) editor, the HTML element is a real boundary.
			that.boundary = that.inInlineMode ? that.editable : that.doc.getDocumentElement();

			// Enabling the box inside of inline editable is pointless.
			// There's no need to access spaces inside paragraphs, links, spans, etc.
			if ( editable.is( dtd.$inline ) )
				return;

			// Handle in-line editing by setting appropriate position.
			// If current position is static, make it relative and clear top/left coordinates.
			if ( that.inInlineMode && !isPositioned( editable ) ) {
				editable.setStyles( {
					position: 'relative',
					top: null,
					left: null
				} );
			}
			// Enable the box. Let it produce children elements, initialize
			// event handlers and own methods.
			initLine.call( this, that );

			// Get view dimensions and scroll positions.
			// At this stage (before any checkMouse call) it is used mostly
			// by tests. Nevertheless it a crucial thing.
			updateWindowSize( that );

			// Remove the box before an undo image is created.
			// This is important. If we didn't do that, the *undo thing* would revert the box into an editor.
			// Thanks to that, undo doesn't even know about the existence of the box.
			editable.attachListener( editor, 'beforeUndoImage', function() {
				that.line.detach();
			} );

			// Removes the box HTML from editor data string if getData is called.
			// Thanks to that, an editor never yields data polluted by the box.
			// Listen with very high priority, so line will be removed before other
			// listeners will see it.
			editable.attachListener( editor, 'beforeGetData', function() {
				// If the box is in editable, remove it.
				if ( that.line.wrap.getParent() ) {
					that.line.detach();

					// Restore line in the last listener for 'getData'.
					editor.once( 'getData', function() {
						that.line.attach();
					}, null, null, 1000 );
				}
			}, null, null, 0 );

			// Hide the box on mouseout if mouse leaves document.
			editable.attachListener( that.inInlineMode ? doc : doc.getWindow().getFrame(), 'mouseout', function( event ) {
				if ( editor.mode != 'wysiwyg' )
					return;

				// Check for inline-mode editor. If so, check mouse position
				// and remove the box if mouse outside of an editor.
				if ( that.inInlineMode ) {
					var mouse = {
						x: event.data.$.clientX,
						y: event.data.$.clientY
					};

					updateWindowSize( that );
					updateEditableSize( that, true );

					var size = that.view.editable,
						scroll = that.view.scroll;

					// If outside of an editor...
					if ( !inBetween( mouse.x, size.left - scroll.x, size.right - scroll.x ) || !inBetween( mouse.y, size.top - scroll.y, size.bottom - scroll.y ) ) {
						clearTimeout( checkMouseTimer );
						checkMouseTimer = null;
						that.line.detach();
					}
				}

				else {
					clearTimeout( checkMouseTimer );
					checkMouseTimer = null;
					that.line.detach();
				}
			} );

			// This one deactivates hidden mode of an editor which
			// prevents the box from being shown.
			editable.attachListener( editable, 'keyup', function( event ) {
				that.hiddenMode = 0;
				that.debug.showHidden( that.hiddenMode ); // %REMOVE_LINE%
			} );

			editable.attachListener( editable, 'keydown', function( event ) {
				if ( editor.mode != 'wysiwyg' )
					return;

				var keyStroke = event.data.getKeystroke(),
					selection = editor.getSelection(),
					selected = selection.getStartElement();

				switch ( keyStroke ) {
					// Shift pressed
					case 2228240: // IE
					case 16:
						that.hiddenMode = 1;
						that.line.detach();
				}

				that.debug.showHidden( that.hiddenMode ); // %REMOVE_LINE%
			} );

			// This method ensures that checkMouse aren't executed
			// in parallel and no more frequently than specified in timeout function.
			// In classic (`iframe`-based) editor, document is used as a trigger, to provide magicline
			// functionality when mouse is below the body (short content, short body).
			editable.attachListener( that.inInlineMode ? editable : doc, 'mousemove', function( event ) {
				checkMouseTimeoutPending = true;

				if ( editor.mode != 'wysiwyg' || editor.readOnly || checkMouseTimer )
					return;

				// IE<9 requires this event-driven object to be created
				// outside of the setTimeout statement.
				// Otherwise it loses the event object with its properties.
				var mouse = {
					x: event.data.$.clientX,
					y: event.data.$.clientY
				};

				checkMouseTimer = setTimeout( function() {
					checkMouse( mouse );
				}, 30 ); // balances performance and accessibility
			} );

			// This one removes box on scroll event.
			// It is to avoid box displacement.
			editable.attachListener( win, 'scroll', function( event ) {
				if ( editor.mode != 'wysiwyg' )
					return;

				that.line.detach();

				// To figure this out just look at the mouseup
				// event handler below.
				if ( env.webkit ) {
					that.hiddenMode = 1;

					clearTimeout( scrollTimeout );
					scrollTimeout = setTimeout( function() {
						// Don't leave hidden mode until mouse remains pressed and
						// scroll is being used, i.e. when dragging something.
						if ( !that.mouseDown )
							that.hiddenMode = 0;
						that.debug.showHidden( that.hiddenMode ); // %REMOVE_LINE%
					}, 50 );

					that.debug.showHidden( that.hiddenMode ); // %REMOVE_LINE%
				}
			} );

			// Those event handlers remove the box on mousedown
			// and don't reveal it until the mouse is released.
			// It is to prevent box insertion e.g. while scrolling
			// (w/ scrollbar), selecting and so on.
			editable.attachListener( env_ie8 ? doc : win, 'mousedown', function( event ) {
				if ( editor.mode != 'wysiwyg' )
					return;

				that.line.detach();
				that.hiddenMode = 1;
				that.mouseDown = 1;

				that.debug.showHidden( that.hiddenMode ); // %REMOVE_LINE%
			} );

			// Google Chrome doesn't trigger this on the scrollbar (since 2009...)
			// so it is totally useless to check for scroll finish
			// see: http://code.google.com/p/chromium/issues/detail?id=14204
			editable.attachListener( env_ie8 ? doc : win, 'mouseup', function( event ) {
				that.hiddenMode = 0;
				that.mouseDown = 0;
				that.debug.showHidden( that.hiddenMode ); // %REMOVE_LINE%
			} );

			// Editor commands for accessing difficult focus spaces.
			editor.addCommand( 'accessPreviousSpace', accessFocusSpaceCmd( that ) );
			editor.addCommand( 'accessNextSpace', accessFocusSpaceCmd( that, true ) );

			editor.setKeystroke( [
				[ config.magicline_keystrokePrevious, 'accessPreviousSpace' ],
				[ config.magicline_keystrokeNext, 'accessNextSpace' ]
			] );

			// Revert magicline hot node on undo/redo.
			editor.on( 'loadSnapshot', function( event ) {
				var elements, element, i;

				for ( var t in { p: 1, br: 1, div: 1 } ) {
					// document.find is not available in QM (#11149).
					elements = editor.document.getElementsByTag( t );

					for ( i = elements.count(); i--; ) {
						if ( ( element = elements.getItem( i ) ).data( 'cke-magicline-hot' ) ) {
							// Restore hotNode
							that.hotNode = element;
							// Restore last access direction
							that.lastCmdDirection = element.data( 'cke-magicline-dir' ) === 'true' ? true : false;

							return;
						}
					}
				}
			} );

			// This method handles mousemove mouse for box toggling.
			// It uses mouse position to determine underlying element, then
			// it tries to use different trigger type in order to place the box
			// in correct place. The following procedure is executed periodically.
			function checkMouse( mouse ) {
				that.debug.groupStart( 'CheckMouse' ); // %REMOVE_LINE%
				that.debug.startTimer(); // %REMOVE_LINE%

				that.mouse = mouse;
				that.trigger = null;

				checkMouseTimer = null;
				updateWindowSize( that );

				if ( checkMouseTimeoutPending 								//	-> There must be an event pending.
					&& !that.hiddenMode 									// 	-> Can't be in hidden mode.
					&& editor.focusManager.hasFocus 						// 	-> Editor must have focus.
					&& !that.line.mouseNear() 								// 	-> Mouse pointer can't be close to the box.
					&& ( that.element = elementFromMouse( that, true ) ) ) 	// 	-> There must be valid element.
				{
					// If trigger exists, and trigger is correct -> show the box.
					// Don't show the line if trigger is a descendant of some tabu-list element.
					if ( ( that.trigger = triggerEditable( that ) || triggerEdge( that ) || triggerExpand( that ) ) &&
						!isInTabu( that, that.trigger.upper || that.trigger.lower ) ) {
						that.line.attach().place();
					}

					// Otherwise remove the box
					else {
						that.trigger = null;
						that.line.detach();
					}

					that.debug.showTrigger( that.trigger ); // %REMOVE_LINE%
					that.debug.mousePos( mouse.y, that.element ); // %REMOVE_LINE%

					checkMouseTimeoutPending = false;
				}

				that.debug.stopTimer(); // %REMOVE_LINE%
				that.debug.groupEnd(); // %REMOVE_LINE%
			}

			// This one allows testing and debugging. It reveals some
			// inner methods to the world.
			this.backdoor = {
				accessFocusSpace: accessFocusSpace,
				boxTrigger: boxTrigger,
				isLine: isLine,
				getAscendantTrigger: getAscendantTrigger,
				getNonEmptyNeighbour: getNonEmptyNeighbour,
				getSize: getSize,
				that: that,
				triggerEdge: triggerEdge,
				triggerEditable: triggerEditable,
				triggerExpand: triggerExpand
			};
		}
	}
308973
function( editor, output )
		{
			var env = CKEDITOR.env;

			var id = 'cke_' + this.id;
			var clickFn = CKEDITOR.tools.addFunction( function( $element )
				{
					var _ = this._;

					if ( _.state == CKEDITOR.TRISTATE_DISABLED )
						return;

					this.createPanel( editor );

					if ( _.on )
					{
						_.panel.hide();
						return;
					}

					this.commit();
					var value = this.getValue();
					if ( value )
						_.list.mark( value );
					else
						_.list.unmarkAll();

					_.panel.showBlock( this.id, new CKEDITOR.dom.element( $element ), 4 );
				},
				this );

			var instance = {
				id : id,
				combo : this,
				focus : function()
				{
					var element = CKEDITOR.document.getById( id ).getChild( 1 );
					element.focus();
				},
				clickFn : clickFn
			};

			function updateState()
			{
				var state = this.modes[ editor.mode ] ? CKEDITOR.TRISTATE_OFF : CKEDITOR.TRISTATE_DISABLED;
				this.setState( editor.readOnly && !this.readOnly ? CKEDITOR.TRISTATE_DISABLED : state );
				this.setValue( '' );
			}

			editor.on( 'mode', updateState, this );
			// If this combo is sensitive to readOnly state, update it accordingly.
			!this.readOnly && editor.on( 'readOnly', updateState, this);

			var keyDownFn = CKEDITOR.tools.addFunction( function( ev, element )
				{
					ev = new CKEDITOR.dom.event( ev );

					var keystroke = ev.getKeystroke();
					switch ( keystroke )
					{
						case 13 :	// ENTER
						case 32 :	// SPACE
						case 40 :	// ARROW-DOWN
							// Show panel
							CKEDITOR.tools.callFunction( clickFn, element );
							break;
						default :
							// Delegate the default behavior to toolbar button key handling.
							instance.onkey( instance,  keystroke );
					}

					// Avoid subsequent focus grab on editor document.
					ev.preventDefault();
				});

			var focusFn = CKEDITOR.tools.addFunction( function() { instance.onfocus && instance.onfocus(); } );

			// For clean up
			instance.keyDownFn = keyDownFn;

			output.push(
				'<span class="cke_rcombo" role="presentation">',
				'<span id=', id );

			if ( this.className )
				output.push( ' class="', this.className, ' cke_off"');

			output.push(
				' role="presentation">',
					'<span id="' + id+ '_label" class=cke_label>', this.label, '</span>',
					'<a hidefocus=true title="', this.title, '" tabindex="-1"',
						env.gecko && env.version >= 10900 && !env.hc ? '' : ' href="javascript:void(\'' + this.label + '\')"',
						' role="button" aria-labelledby="', id , '_label" aria-describedby="', id, '_text" aria-haspopup="true"' );

			// Some browsers don't cancel key events in the keydown but in the
			// keypress.
			// TODO: Check if really needed for Gecko+Mac.
			if ( CKEDITOR.env.opera || ( CKEDITOR.env.gecko && CKEDITOR.env.mac ) )
			{
				output.push(
					' onkeypress="return false;"' );
			}

			// With Firefox, we need to force it to redraw, otherwise it
			// will remain in the focus state.
			if ( CKEDITOR.env.gecko )
			{
				output.push(
					' onblur="this.style.cssText = this.style.cssText;"' );
			}

			output.push(
					' onkeydown="CKEDITOR.tools.callFunction( ', keyDownFn, ', event, this );"' +
					' onfocus="return CKEDITOR.tools.callFunction(', focusFn, ', event);" ' +
					( CKEDITOR.env.ie ? 'onclick="return false;" onmouseup' : 'onclick' ) +		// #188
						'="CKEDITOR.tools.callFunction(', clickFn, ', this); return false;">' +
						'<span>' +
							'<span id="' + id + '_text" class="cke_text cke_inline_label">' + this.label + '</span>' +
						'</span>' +
						'<span class=cke_openbutton><span class=cke_icon>' + ( CKEDITOR.env.hc ? '&#9660;' : CKEDITOR.env.air ?  '&nbsp;' : '' ) + '</span></span>' +	// BLACK DOWN-POINTING TRIANGLE
					'</a>' +
				'</span>' +
				'</span>' );

			if ( this.onRender )
				this.onRender();

			return instance;
		}
1061623
def createEditor(self, parent, column, operator, value):
        
        editor = super(EnumPlugin, self).createEditor(parent,
                                                      column,
                                                      operator,
                                                      value)
        
        editor.setEnum(column.enum())
        if operator in ('contains', 'does not contain'):
            editor.setCheckable(True)
        
        editor.setCurrentValue(value)
        return editor
451650
function()
		{
			var head = this.$.getElementsByTagName( 'head' )[0];
			if ( !head )
				head = this.getDocumentElement().append( new CKEDITOR.dom.element( 'head' ), true );
			else
			head = new CKEDITOR.dom.element( head );

			return (
			this.getHead = function()
				{
					return head;
				})();
		}
743089
function getWriter(input) {
  const writer = input.getWriter();
  const releaseLock = writer.releaseLock;
  writer.releaseLock = () => {
    writer.closed.catch(function() {});
    releaseLock.call(writer);
  };
  return writer;
}
118223
function bindEventDelegate(editor, eventName) {
      var eventRootElm = getEventTarget(editor, eventName), delegate;

      function isListening(editor) {
        return !editor.hidden && !editor.readonly;
      }

      if (!editor.delegates) {
        editor.delegates = {};
      }

      if (editor.delegates[eventName]) {
        return;
      }

      if (editor.settings.event_root) {
        if (!customEventRootDelegates) {
          customEventRootDelegates = {};
          editor.editorManager.on('removeEditor', function () {
            var name;

            if (!editor.editorManager.activeEditor) {
              if (customEventRootDelegates) {
                for (name in customEventRootDelegates) {
                  editor.dom.unbind(getEventTarget(editor, name));
                }

                customEventRootDelegates = null;
              }
            }
          });
        }

        if (customEventRootDelegates[eventName]) {
          return;
        }

        delegate = function (e) {
          var target = e.target, editors = editor.editorManager.editors, i = editors.length;

          while (i--) {
            var body = editors[i].getBody();

            if (body === target || DOM.isChildOf(target, body)) {
              if (isListening(editors[i])) {
                editors[i].fire(eventName, e);
              }
            }
          }
        };

        customEventRootDelegates[eventName] = delegate;
        DOM.bind(eventRootElm, eventName, delegate);
      } else {
        delegate = function (e) {
          if (isListening(editor)) {
            editor.fire(eventName, e);
          }
        };

        DOM.bind(eventRootElm, eventName, delegate);
        editor.delegates[eventName] = delegate;
      }
    }
169479
function() {
    // Attach Cell Editor container element as first child of body
    var elCellEditor = document.createElement("div");
    elCellEditor.id = this._sId + "-celleditor";
    elCellEditor.style.display = "none";
    elCellEditor.tabIndex = 0;
    Dom.addClass(elCellEditor, DT.CLASS_EDITOR);
    var elFirstChild = Dom.getFirstChild(document.body);
    if(elFirstChild) {
        elCellEditor = Dom.insertBefore(elCellEditor, elFirstChild);
    }
    else {
        elCellEditor = document.body.appendChild(elCellEditor);
    }
    
    // Internal tracker of Cell Editor values
    var oCellEditor = {};
    oCellEditor.container = elCellEditor;
    oCellEditor.value = null;
    oCellEditor.isActive = false;
    this._oCellEditor = oCellEditor;
}