Vergleich admin/jscripts/codemirror/lib/codemirror.js - 1.8.2 - 1.8.11

  function CodeMirror(place, options) {
    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

  function CodeMirror(place, options) {
    if (!(this instanceof CodeMirror)) return new CodeMirror(place, options);

    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);
    setGuttersForLineNumbers(options);

    // Determine effective options based on given values and defaults.
    copyObj(defaults, options, false);
    setGuttersForLineNumbers(options);

    if (options.lineWrapping)
      this.display.wrapper.className += " CodeMirror-wrap";
    if (options.autofocus && !mobile) focusInput(this);

    if (options.lineWrapping)
      this.display.wrapper.className += " CodeMirror-wrap";
    if (options.autofocus && !mobile) focusInput(this);

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap

    this.state = {
      keyMaps: [],  // stores maps added by addKeyMap

      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
      draggingText: false,

      suppressEdits: false, // used to disable editing during key handlers when in readOnly mode
      pasteIncoming: false, cutIncoming: false, // help recognize paste/cut edits in readInput
      draggingText: false,

    };

    // Override magic textarea content restore that IE sometimes does

    };

    // Override magic textarea content restore that IE sometimes does

    registerEventHandlers(this);
    ensureGlobalHandlers();

    registerEventHandlers(this);
    ensureGlobalHandlers();

  }

  // DISPLAY CONSTRUCTOR

  }

  // DISPLAY CONSTRUCTOR

    // Wraps and hides input textarea
    d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");

    // Wraps and hides input textarea
    d.inputDiv = elt("div", [input], null, "overflow: hidden; position: relative; width: 3px; height: 0px;");

    // Covers bottom-right square when both scrollbars are present.
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");

    // Covers bottom-right square when both scrollbars are present.
    d.scrollbarFiller = elt("div", null, "CodeMirror-scrollbar-filler");

    // Covers bottom of gutter when coverGutterNextToScrollbar is on
    // and h scrollbar is present.
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");

    // Covers bottom of gutter when coverGutterNextToScrollbar is on
    // and h scrollbar is present.
    d.gutterFiller = elt("div", null, "CodeMirror-gutter-filler");

    // Will contain the actual code, positioned to cover the viewport.
    d.lineDiv = elt("div", null, "CodeMirror-code");
    // Elements are added to these to represent selection and cursors.

    // Will contain the actual code, positioned to cover the viewport.
    d.lineDiv = elt("div", null, "CodeMirror-code");
    // Elements are added to these to represent selection and cursors.

    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
    // Set to the height of the document, allowing scrolling.
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");

    d.mover = elt("div", [elt("div", [d.lineSpace], "CodeMirror-lines")], null, "position: relative");
    // Set to the height of the document, allowing scrolling.
    d.sizer = elt("div", [d.mover], "CodeMirror-sizer");

    // Behavior of elts with overflow: auto and padding is
    // inconsistent across browsers. This is used to ensure the
    // scrollable area is big enough.

    // Behavior of elts with overflow: auto and padding is
    // inconsistent across browsers. This is used to ensure the
    // scrollable area is big enough.

    // Will contain the gutters, if any.
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;

    // Will contain the gutters, if any.
    d.gutters = elt("div", null, "CodeMirror-gutters");
    d.lineGutter = null;

    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.

    d.scroller = elt("div", [d.sizer, d.heightForcer, d.gutters], "CodeMirror-scroll");
    d.scroller.setAttribute("tabIndex", "-1");
    // The element in which the editor lives.

    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }

    // Work around IE7 z-index bug (not perfect, hence IE7 not really being supported)
    if (ie && ie_version < 8) { d.gutters.style.zIndex = -1; d.scroller.style.paddingRight = 0; }

    if (!webkit) d.scroller.draggable = true;
    // Needed to handle Tab key in KHTML
    if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }

    if (!webkit) d.scroller.draggable = true;
    // Needed to handle Tab key in KHTML
    if (khtml) { d.inputDiv.style.height = "1px"; d.inputDiv.style.position = "absolute"; }

    // Current rendered range (may be bigger than the view window).
    d.viewFrom = d.viewTo = doc.first;

    // Current rendered range (may be bigger than the view window).
    d.viewFrom = d.viewTo = doc.first;

    // Information about the rendered lines.
    d.view = [];

    // Information about the rendered lines.
    d.view = [];

    // Holds info about a single rendered line when it was rendered
    // for measurement, while not in view.
    d.externalMeasured = null;
    // Empty space (in pixels) above the view
    d.viewOffset = 0;

    // Holds info about a single rendered line when it was rendered
    // for measurement, while not in view.
    d.externalMeasured = null;
    // Empty space (in pixels) above the view
    d.viewOffset = 0;

    d.updateLineNumbers = null;

    d.updateLineNumbers = null;

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)

    // Used to only resize the line number gutter when necessary (when
    // the amount of lines crosses a boundary that makes its width change)

    if (cm.options.lineWrapping) {
      addClass(cm.display.wrapper, "CodeMirror-wrap");
      cm.display.sizer.style.minWidth = "";

    if (cm.options.lineWrapping) {
      addClass(cm.display.wrapper, "CodeMirror-wrap");
      cm.display.sizer.style.minWidth = "";

    } else {
      rmClass(cm.display.wrapper, "CodeMirror-wrap");
      findMaxLine(cm);

    } else {
      rmClass(cm.display.wrapper, "CodeMirror-wrap");
      findMaxLine(cm);

      var estHeight = est(line);
      if (estHeight != line.height) updateLineHeight(line, estHeight);
    });

      var estHeight = est(line);
      if (estHeight != line.height) updateLineHeight(line, estHeight);
    });

  }

  function themeChanged(cm) {

  }

  function themeChanged(cm) {

  function updateGutterSpace(cm) {
    var width = cm.display.gutters.offsetWidth;
    cm.display.sizer.style.marginLeft = width + "px";

  function updateGutterSpace(cm) {
    var width = cm.display.gutters.offsetWidth;
    cm.display.sizer.style.marginLeft = width + "px";

  }

  // Compute the character length of a line, taking into account

  }

  // Compute the character length of a line, taking into account

  }

  // SCROLLBARS

  }

  // SCROLLBARS

  // Prepare DOM reads needed to update the scrollbars. Done in one
  // shot to minimize update/measure roundtrips.
  function measureForScrollbars(cm) {

  // Prepare DOM reads needed to update the scrollbars. Done in one
  // shot to minimize update/measure roundtrips.
  function measureForScrollbars(cm) {

    return {

    return {

    };
  }

    };
  }

  function updateScrollbars(cm, measure) {
    if (!measure) measure = measureForScrollbars(cm);

  function updateScrollbars(cm, measure) {
    if (!measure) measure = measureForScrollbars(cm);

    }

    }

      d.scrollbarFiller.style.display = "block";

      d.scrollbarFiller.style.display = "block";

    } else d.scrollbarFiller.style.display = "";

    } else d.scrollbarFiller.style.display = "";

      d.gutterFiller.style.display = "block";

      d.gutterFiller.style.display = "block";

    } else d.gutterFiller.style.display = "";

    } else d.gutterFiller.style.display = "";

  // Compute the lines that are visible in a given viewport (defaults

  // Compute the lines that are visible in a given viewport (defaults

  // height, and ensure (see op.scrollToPos) properties.

  // height, and ensure (see op.scrollToPos) properties.

    top = Math.floor(top - paddingTop(display));

    top = Math.floor(top - paddingTop(display));

    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
    // forces those lines into the viewport (if possible).

    var from = lineAtHeight(doc, top), to = lineAtHeight(doc, bottom);
    // Ensure is a {from: {line, ch}, to: {line, ch}} object, and
    // forces those lines into the viewport (if possible).

    }
    return {from: from, to: Math.max(to, from + 1)};
  }

    }
    return {from: from, to: Math.max(to, from + 1)};
  }

    }
    if (cm.options.fixedGutter)
      display.gutters.style.left = (comp + gutterW) + "px";

    }
    if (cm.options.fixedGutter)
      display.gutters.style.left = (comp + gutterW) + "px";

  // Used to ensure that the line number gutter is still the right
  // size for the current document size. Returns true when an update
  // is needed.

  // Used to ensure that the line number gutter is still the right
  // size for the current document size. Returns true when an update
  // is needed.

  // DISPLAY DRAWING

  // DISPLAY DRAWING

    }

    }

  }

  // Does the actual updating of the line display. Bails out
  // (returning false) when there is nothing to be done and forced is
  // false.

  }

  // Does the actual updating of the line display. Bails out
  // (returning false) when there is nothing to be done and forced is
  // false.

    var display = cm.display, doc = cm.doc;

    var display = cm.display, doc = cm.doc;

    }

    // Bail out if the visible area is already rendered and nothing changed.

    }

    // Bail out if the visible area is already rendered and nothing changed.

        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&

        (display.updateLineNumbers == null || display.updateLineNumbers >= display.viewTo) &&

      resetView(cm);

      resetView(cm);

    // Compute a suitable new viewport (from & to)
    var end = doc.first + doc.size;

    // Compute a suitable new viewport (from & to)
    var end = doc.first + doc.size;

    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
    if (sawCollapsedSpans) {

    if (display.viewFrom < from && from - display.viewFrom < 20) from = Math.max(doc.first, display.viewFrom);
    if (display.viewTo > to && display.viewTo - to < 20) to = Math.min(end, display.viewTo);
    if (sawCollapsedSpans) {

    }

    var different = from != display.viewFrom || to != display.viewTo ||

    }

    var different = from != display.viewFrom || to != display.viewTo ||

    adjustView(cm, from, to);

    adjustView(cm, from, to);

    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
    // Position the mover div to align with the current scroll position
    cm.display.mover.style.top = display.viewOffset + "px";

    var toUpdate = countDirtyView(cm);

    display.viewOffset = heightAtLine(getLine(cm.doc, display.viewFrom));
    // Position the mover div to align with the current scroll position
    cm.display.mover.style.top = display.viewOffset + "px";

    var toUpdate = countDirtyView(cm);

    // For big changes, we hide the enclosing element during the
    // update, since that speeds up the operations on most browsers.
    var focused = activeElt();
    if (toUpdate > 4) display.lineDiv.style.display = "none";

    // For big changes, we hide the enclosing element during the
    // update, since that speeds up the operations on most browsers.
    var focused = activeElt();
    if (toUpdate > 4) display.lineDiv.style.display = "none";

    if (toUpdate > 4) display.lineDiv.style.display = "";

    if (toUpdate > 4) display.lineDiv.style.display = "";

    // There might have been a widget with a focused element that got
    // hidden or updated, if so re-focus it.
    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();

    // Prevent selection and cursors from interfering with the scroll

    // There might have been a widget with a focused element that got
    // hidden or updated, if so re-focus it.
    if (focused && activeElt() != focused && focused.offsetHeight) focused.focus();

    // Prevent selection and cursors from interfering with the scroll

    removeChildren(display.cursorDiv);
    removeChildren(display.selectionDiv);

    removeChildren(display.cursorDiv);
    removeChildren(display.selectionDiv);

    if (different) {

    if (different) {

      startWorker(cm, 400);
    }

      startWorker(cm, 400);
    }

    return true;
  }

    return true;
  }

  }

  }

  }

  // Read the actual heights of the rendered lines, and update their

  }

  // Read the actual heights of the rendered lines, and update their

  // view, so that we don't interleave reading and writing to the DOM.
  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};

  // view, so that we don't interleave reading and writing to the DOM.
  function getDimensions(cm) {
    var d = cm.display, left = {}, width = {};

    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {

    for (var n = d.gutters.firstChild, i = 0; n; n = n.nextSibling, ++i) {

    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,

    }
    return {fixedPos: compensateForHScroll(d),
            gutterTotalWidth: d.gutters.offsetWidth,

    if (cm.options.lineNumbers || markers) {
      var wrap = ensureLineWrapped(lineView);
      var gutterWrap = lineView.gutter =

    if (cm.options.lineNumbers || markers) {
      var wrap = ensureLineWrapped(lineView);
      var gutterWrap = lineView.gutter =

                          lineView.text);

                          lineView.text);

      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        lineView.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineN),

      if (cm.options.lineNumbers && (!markers || !markers["CodeMirror-linenumbers"]))
        lineView.lineNumber = gutterWrap.appendChild(
          elt("div", lineNumberFor(cm.options, lineN),

    var wrap = ensureLineWrapped(lineView);
    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");

    var wrap = ensureLineWrapped(lineView);
    for (var i = 0, ws = line.widgets; i < ws.length; ++i) {
      var widget = ws[i], node = elt("div", [widget.node], "CodeMirror-linewidget");

      positionLineWidget(widget, node, lineView, dims);
      if (allowAbove && widget.above)
        wrap.insertBefore(node, lineView.gutter || lineView.text);

      positionLineWidget(widget, node, lineView, dims);
      if (allowAbove && widget.above)
        wrap.insertBefore(node, lineView.gutter || lineView.text);

  // SELECTION DRAWING

  // Redraw the selection and/or cursor

  // SELECTION DRAWING

  // Redraw the selection and/or cursor

    for (var i = 0; i < doc.sel.ranges.length; i++) {
      var range = doc.sel.ranges[i];

    for (var i = 0; i < doc.sel.ranges.length; i++) {
      var range = doc.sel.ranges[i];

        drawSelectionCursor(cm, range, curFragment);
      if (!collapsed)
        drawSelectionRange(cm, range, selFragment);

        drawSelectionCursor(cm, range, curFragment);
      if (!collapsed)
        drawSelectionRange(cm, range, selFragment);

    // Move the hidden textarea near the cursor to prevent scrolling artifacts
    if (cm.options.moveInputWithCursor) {
      var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();

    // Move the hidden textarea near the cursor to prevent scrolling artifacts
    if (cm.options.moveInputWithCursor) {
      var headPos = cursorCoords(cm, doc.sel.primary().head, "div");
      var wrapOff = display.wrapper.getBoundingClientRect(), lineOff = display.lineDiv.getBoundingClientRect();

    }

    }

  }

  // Draws a cursor for the given range

  }

  // Draws a cursor for the given range

  function drawSelectionRange(cm, range, output) {
    var display = cm.display, doc = cm.doc;
    var fragment = document.createDocumentFragment();

  function drawSelectionRange(cm, range, output) {
    var display = cm.display, doc = cm.doc;
    var fragment = document.createDocumentFragment();

    function add(left, top, width, bottom) {
      if (top < 0) top = 0;
      top = Math.round(top);

    function add(left, top, width, bottom) {
      if (top < 0) top = 0;
      top = Math.round(top);

        add(left, rightPos.top, right - left, rightPos.bottom);
      });
      return {start: start, end: end};

        add(left, rightPos.top, right - left, rightPos.bottom);
      });
      return {start: start, end: end};

    var sFrom = range.from(), sTo = range.to();
    if (sFrom.line == sTo.line) {

    var sFrom = range.from(), sTo = range.to();
    if (sFrom.line == sTo.line) {

      if (leftEnd.bottom < rightStart.top)
        add(leftSide, leftEnd.bottom, null, rightStart.top);
    }

      if (leftEnd.bottom < rightStart.top)
        add(leftSide, leftEnd.bottom, null, rightStart.top);
    }

    output.appendChild(fragment);
  }

    output.appendChild(fragment);
  }

      }, cm.options.cursorBlinkRate);
    else if (cm.options.cursorBlinkRate < 0)
      display.cursorDiv.style.visibility = "hidden";

      }, cm.options.cursorBlinkRate);
    else if (cm.options.cursorBlinkRate < 0)
      display.cursorDiv.style.visibility = "hidden";

  function startWorker(cm, time) {
    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
      cm.state.highlight.set(time, bind(highlightWorker, cm));

  function startWorker(cm, time) {
    if (cm.doc.mode.startState && cm.doc.frontier < cm.display.viewTo)
      cm.state.highlight.set(time, bind(highlightWorker, cm));

    if (doc.frontier >= cm.display.viewTo) return;
    var end = +new Date + cm.options.workTime;
    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));

    if (doc.frontier >= cm.display.viewTo) return;
    var end = +new Date + cm.options.workTime;
    var state = copyState(doc.mode, getStateBefore(cm, doc.frontier));

    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
      if (doc.frontier >= cm.display.viewFrom) { // Visible
        var oldStyles = line.styles;

    doc.iter(doc.frontier, Math.min(doc.first + doc.size, cm.display.viewTo + 500), function(line) {
      if (doc.frontier >= cm.display.viewFrom) { // Visible
        var oldStyles = line.styles;

        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];

        var ischange = !oldStyles || oldStyles.length != line.styles.length ||
          oldCls != newCls && (!oldCls || !newCls || oldCls.bgClass != newCls.bgClass || oldCls.textClass != newCls.textClass);
        for (var i = 0; !ischange && i < oldStyles.length; ++i) ischange = oldStyles[i] != line.styles[i];

        line.stateAfter = copyState(doc.mode, state);
      } else {
        processLine(cm, line.text, state);

        line.stateAfter = copyState(doc.mode, state);
      } else {
        processLine(cm, line.text, state);

        return true;
      }
    });

        return true;
      }
    });

    });
  }

    });
  }

    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
    return data;

    var data = {left: parseInt(style.paddingLeft), right: parseInt(style.paddingRight)};
    if (!isNaN(data.left) && !isNaN(data.right)) display.cachedPaddingH = data;
    return data;

  }

  // Ensure the lineView.wrapping.heights array is populated. This is

  }

  // Ensure the lineView.wrapping.heights array is populated. This is

  // height.
  function ensureLineHeights(cm, lineView, rect) {
    var wrapping = cm.options.lineWrapping;

  // height.
  function ensureLineHeights(cm, lineView, rect) {
    var wrapping = cm.options.lineWrapping;

    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
      var heights = lineView.measure.heights = [];
      if (wrapping) {

    if (!lineView.measure.heights || wrapping && lineView.measure.width != curWidth) {
      var heights = lineView.measure.heights = [];
      if (wrapping) {

    view.text = built.pre;
    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
    return view;

    view.text = built.pre;
    removeChildrenAndAdd(cm.display.lineMeasure, built.pre);
    return view;

  // Get a {top, bottom, left, right} box (in line-local coordinates)
  // for a given character.

  // Get a {top, bottom, left, right} box (in line-local coordinates)
  // for a given character.

    var rect;
    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.

    var rect;
    if (node.nodeType == 3) { // If it is a text node, use a range to retrieve the coordinates.

      }

      }

    } else { // If it is a widget, simply get the box for the whole widget.
      if (start > 0) collapse = bias = "right";
      var rects;

    } else { // If it is a widget, simply get the box for the whole widget.
      if (start > 0) collapse = bias = "right";
      var rects;

                  top: top, bottom: bot};
    if (!rect.left && !rect.right) result.bogus = true;
    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

                  top: top, bottom: bot};
    if (!rect.left && !rect.right) result.bogus = true;
    if (!cm.options.singleCursorHeightPerLine) { result.rtop = rtop; result.rbottom = rbot; }

    return result;

    return result;

  }

  function clearLineMeasurementCacheFor(lineView) {

  }

  function clearLineMeasurementCacheFor(lineView) {

  // Converts a {top, bottom, left, right} box from line-local
  // coordinates into another coordinate system. Context may be one of

  // Converts a {top, bottom, left, right} box from line-local
  // coordinates into another coordinate system. Context may be one of

  function intoCoordSystem(cm, lineObj, rect, context) {
    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
      var size = widgetHeight(lineObj.widgets[i]);

  function intoCoordSystem(cm, lineObj, rect, context) {
    if (lineObj.widgets) for (var i = 0; i < lineObj.widgets.length; ++i) if (lineObj.widgets[i].above) {
      var size = widgetHeight(lineObj.widgets[i]);

  // cursor and display (which would be awkward, slow, and
  // error-prone). Instead, display updates are batched and then all
  // combined and executed at once.

  // cursor and display (which would be awkward, slow, and
  // error-prone). Instead, display updates are batched and then all
  // combined and executed at once.

  var nextOpId = 0;
  // Start a new operation.
  function startOperation(cm) {
    cm.curOp = {

  var nextOpId = 0;
  // Start a new operation.
  function startOperation(cm) {
    cm.curOp = {

      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
      startHeight: cm.doc.height, // Used to detect need to update scrollbar
      forceUpdate: false,      // Used to force a redraw

      viewChanged: false,      // Flag that indicates that lines might need to be redrawn
      startHeight: cm.doc.height, // Used to detect need to update scrollbar
      forceUpdate: false,      // Used to force a redraw

      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
      changeObjs: null,        // Accumulated changes, for firing change events
      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on

      typing: false,           // Whether this reset should be careful to leave existing text (for compositing)
      changeObjs: null,        // Accumulated changes, for firing change events
      cursorActivityHandlers: null, // Set of handlers to fire cursorActivity on

      selectionChanged: false, // Whether the selection needs to be redrawn
      updateMaxLine: false,    // Set when the widest line needs to be determined anew
      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
      scrollToPos: null,       // Used to scroll to a specific position
      id: ++nextOpId           // Unique ID
    };

      selectionChanged: false, // Whether the selection needs to be redrawn
      updateMaxLine: false,    // Set when the widest line needs to be determined anew
      scrollLeft: null, scrollTop: null, // Intermediate scroll position, not pushed to DOM yet
      scrollToPos: null,       // Used to scroll to a specific position
      id: ++nextOpId           // Unique ID
    };

  // Finish an operation, updating the display and signalling delayed events
  function endOperation(cm) {

  // Finish an operation, updating the display and signalling delayed events
  function endOperation(cm) {

    if (op.updateMaxLine) findMaxLine(cm);

    if (op.updateMaxLine) findMaxLine(cm);

    }

    }

    // Abort mouse wheel delta measurement, when scrolling explicitly
    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
      display.wheelStartX = display.wheelStartY = null;

    // Propagate the scroll position to the actual DOM scroller

    // Abort mouse wheel delta measurement, when scrolling explicitly
    if (display.wheelStartX != null && (op.scrollTop != null || op.scrollLeft != null || op.scrollToPos))
      display.wheelStartX = display.wheelStartY = null;

    // Propagate the scroll position to the actual DOM scroller

    }

    }

      alignHorizontally(cm);
    }
    // If we need to scroll a specific position into view, do so.
    if (op.scrollToPos) {

      alignHorizontally(cm);
    }
    // If we need to scroll a specific position into view, do so.
    if (op.scrollToPos) {

      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
    }

      if (op.scrollToPos.isCursor && cm.state.focused) maybeScrollWindow(cm, coords);
    }

    // Fire events for markers that are hidden/unidden by editing or
    // undoing

    // Fire events for markers that are hidden/unidden by editing or
    // undoing

    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");

    if (unhidden) for (var i = 0; i < unhidden.length; ++i)
      if (unhidden[i].lines.length) signal(unhidden[i], "unhide");

    // Fire change events, and delayed event handlers
    if (op.changeObjs)
      signal(cm, "changes", cm, op.changeObjs);

    // Fire change events, and delayed event handlers
    if (op.changeObjs)
      signal(cm, "changes", cm, op.changeObjs);

  }

  // Run the given function in an operation

  }

  // Run the given function in an operation

      if (cm.curOp) return f.apply(cm, arguments);
      startOperation(cm);
      try { return f.apply(cm, arguments); }

      if (cm.curOp) return f.apply(cm, arguments);
      startOperation(cm);
      try { return f.apply(cm, arguments); }

  // Used to add methods to editor and doc instances, wrapping them in
  // operations.
  function methodOp(f) {

  // Used to add methods to editor and doc instances, wrapping them in
  // operations.
  function methodOp(f) {

      startOperation(this);
      try { return f.apply(this, arguments); }
      finally { endOperation(this); }

      startOperation(this);
      try { return f.apply(this, arguments); }
      finally { endOperation(this); }

  function docMethodOp(f) {
    return function() {
      var cm = this.cm;

  function docMethodOp(f) {
    return function() {
      var cm = this.cm;

      try { return f.apply(this, arguments); }
      finally { endOperation(cm); }
    };

      try { return f.apply(this, arguments); }
      finally { endOperation(cm); }
    };

  // VIEW TRACKING

  // These objects are used to represent the visible (currently drawn)

  // VIEW TRACKING

  // These objects are used to represent the visible (currently drawn)

      resetView(cm);
    } else if (from <= display.viewFrom) { // Top overlap
      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);

      resetView(cm);
    } else if (from <= display.viewFrom) { // Top overlap
      var cut = viewCuttingPoint(cm, to, to + lendiff, 1);

        display.view = display.view.slice(cut.index);
        display.viewFrom = cut.lineN;
        display.viewTo += lendiff;

        display.view = display.view.slice(cut.index);
        display.viewFrom = cut.lineN;
        display.viewTo += lendiff;

    }
    cm.display.poll.set(20, p);
  }

    }
    cm.display.poll.set(20, p);
  }

  // Read input from the textarea, and update the document to match.
  // When something is selected, it is present in the textarea, and

  // Read input from the textarea, and update the document to match.
  // When something is selected, it is present in the textarea, and

    // possible when it is clear that nothing happened. hasSelection
    // will be the case when there is a lot of text in the textarea,
    // in which case reading its value would be expensive.

    // possible when it is clear that nothing happened. hasSelection
    // will be the case when there is a lot of text in the textarea,
    // in which case reading its value would be expensive.

      return false;
    // See paste handler for more on the fakedLastChar kludge
    if (cm.state.pasteIncoming && cm.state.fakedLastChar) {

      return false;
    // See paste handler for more on the fakedLastChar kludge
    if (cm.state.pasteIncoming && cm.state.fakedLastChar) {

    var text = input.value;
    // If nothing changed, bail.
    if (text == prevInput && !cm.somethingSelected()) return false;

    var text = input.value;
    // If nothing changed, bail.
    if (text == prevInput && !cm.somethingSelected()) return false;

      resetInput(cm);
      return false;
    }

      resetInput(cm);
      return false;
    }

    var inserted = text.slice(same), textLines = splitLines(inserted);

    // When pasing N lines into N selections, insert one line per selection

    var inserted = text.slice(same), textLines = splitLines(inserted);

    // When pasing N lines into N selections, insert one line per selection

    // Normal behavior is to insert the new text into every selection
    for (var i = doc.sel.ranges.length - 1; i >= 0; i--) {

    // Normal behavior is to insert the new text into every selection
    for (var i = doc.sel.ranges.length - 1; i >= 0; i--) {

      else if (cm.state.overwrite && range.empty() && !cm.state.pasteIncoming)
        to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
      var updateInput = cm.curOp.updateInput;

      else if (cm.state.overwrite && range.empty() && !cm.state.pasteIncoming)
        to = Pos(to.line, Math.min(getLine(doc, to.line).text.length, to.ch + lst(textLines).length));
      var updateInput = cm.curOp.updateInput;

                         origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);

                         origin: cm.state.pasteIncoming ? "paste" : cm.state.cutIncoming ? "cut" : "+input"};
      makeChange(cm.doc, changeEvent);
      signalLater(cm, "inputRead", cm, changeEvent);

          cm.options.smartIndent && range.head.ch < 100 &&
          (!i || doc.sel.ranges[i - 1].head.line != range.head.line)) {
        var mode = cm.getModeAt(range.head);

          cm.options.smartIndent && range.head.ch < 100 &&
          (!i || doc.sel.ranges[i - 1].head.line != range.head.line)) {
        var mode = cm.getModeAt(range.head);

        if (mode.electricChars) {
          for (var j = 0; j < mode.electricChars.length; j++)
            if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {

        if (mode.electricChars) {
          for (var j = 0; j < mode.electricChars.length; j++)
            if (inserted.indexOf(mode.electricChars.charAt(j)) > -1) {

              break;
            }
        } else if (mode.electricInput) {

              break;
            }
        } else if (mode.electricInput) {

          if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch)))

          if (mode.electricInput.test(getLine(doc, end.line).text.slice(0, end.ch)))

        }
      }
    }

        }
      }
    }

  // Reset the input to correspond to the selection (or to be empty,
  // when not typing and nothing is selected)
  function resetInput(cm, typing) {

  // Reset the input to correspond to the selection (or to be empty,
  // when not typing and nothing is selected)
  function resetInput(cm, typing) {

    var minimal, selected, doc = cm.doc;
    if (cm.somethingSelected()) {
      cm.display.prevInput = "";

    var minimal, selected, doc = cm.doc;
    if (cm.somethingSelected()) {
      cm.display.prevInput = "";

        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
        e_preventDefault(e);

        var pos = posFromMouse(cm, e);
        if (!pos || clickInGutter(cm, e) || eventInWidget(cm.display, e)) return;
        e_preventDefault(e);

        extendSelection(cm.doc, word.anchor, word.head);
      }));
    else

        extendSelection(cm.doc, word.anchor, word.head);
      }));
    else

        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }

        setScrollLeft(cm, d.scroller.scrollLeft, true);
        signal(cm, "scroll", cm);
      }

    });

    // Listen to wheel events in order to try and update the viewport on time.
    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});

    });

    // Listen to wheel events in order to try and update the viewport on time.
    on(d.scroller, "mousewheel", function(e){onScrollWheel(cm, e);});
    on(d.scroller, "DOMMouseScroll", function(e){onScrollWheel(cm, e);});

    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    // Prevent wrapper from ever scrolling
    on(d.wrapper, "scroll", function() { d.wrapper.scrollTop = d.wrapper.scrollLeft = 0; });

    on(d.input, "input", function() {
      if (ie && ie_version >= 9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;

    on(d.input, "input", function() {
      if (ie && ie_version >= 9 && cm.display.inputHasSelection) cm.display.inputHasSelection = null;

    });
    on(d.input, "keydown", operation(cm, onKeyDown));
    on(d.input, "keypress", operation(cm, onKeyPress));

    });
    on(d.input, "keydown", operation(cm, onKeyDown));
    on(d.input, "keypress", operation(cm, onKeyPress));

    function prepareCopyCut(e) {
      if (cm.somethingSelected()) {

    function prepareCopyCut(e) {
      if (cm.somethingSelected()) {

        if (d.inaccurateSelection) {
          d.prevInput = "";
          d.inaccurateSelection = false;

        if (d.inaccurateSelection) {
          d.prevInput = "";
          d.inaccurateSelection = false;

          selectInput(d.input);
        }
      } else {

          selectInput(d.input);
        }
      } else {

        for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
          var line = cm.doc.sel.ranges[i].head.line;
          var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
          ranges.push(lineRange);

        for (var i = 0; i < cm.doc.sel.ranges.length; i++) {
          var line = cm.doc.sel.ranges[i].head.line;
          var lineRange = {anchor: Pos(line, 0), head: Pos(line + 1, 0)};
          ranges.push(lineRange);

        }
        if (e.type == "cut") {
          cm.setSelections(ranges, null, sel_dontScroll);
        } else {
          d.prevInput = "";

        }
        if (e.type == "cut") {
          cm.setSelections(ranges, null, sel_dontScroll);
        } else {
          d.prevInput = "";

          selectInput(d.input);
        }

          selectInput(d.input);
        }

      }
      if (e.type == "cut") cm.state.cutIncoming = true;
    }

      }
      if (e.type == "cut") cm.state.cutIncoming = true;
    }

  // Called when the window resizes
  function onResize(cm) {

  // Called when the window resizes
  function onResize(cm) {

    // Might be a text scaling operation, clear size caches.

    // Might be a text scaling operation, clear size caches.

    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

    d.cachedCharWidth = d.cachedTextHeight = d.cachedPaddingH = null;

    cm.setSize();

    cm.setSize();

  // Return true when the given mouse event happened in a widget
  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {

  // Return true when the given mouse event happened in a widget
  function eventInWidget(display, e) {
    for (var n = e_target(e); n != display.wrapper; n = n.parentNode) {

    }
  }

    }
  }

  // coordinates beyond the right of the text.
  function posFromMouse(cm, e, liberal, forRect) {
    var display = cm.display;

  // coordinates beyond the right of the text.
  function posFromMouse(cm, e, liberal, forRect) {
    var display = cm.display;

    var x, y, space = display.lineSpace.getBoundingClientRect();
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX - space.left; y = e.clientY - space.top; }

    var x, y, space = display.lineSpace.getBoundingClientRect();
    // Fails unpredictably on IE[67] when mouse is dragged around quickly.
    try { x = e.clientX - space.left; y = e.clientY - space.top; }

    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
      type = "double";
      lastDoubleClick = {time: now, pos: start};

    } else if (lastClick && lastClick.time > now - 400 && cmp(lastClick.pos, start) == 0) {
      type = "double";
      lastDoubleClick = {time: now, pos: start};

      type = "single";
      lastClick = {time: now, pos: start};
    }

      type = "single";
      lastClick = {time: now, pos: start};
    }

    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&

    if (cm.options.dragDrop && dragAndDrop && !isReadOnly(cm) &&

      leftButtonStartDrag(cm, e, start, modifier);
    else
      leftButtonSelect(cm, e, start, type, modifier);

      leftButtonStartDrag(cm, e, start, modifier);
    else
      leftButtonSelect(cm, e, start, type, modifier);

  // Start a text drag. When it ends, see if any dragging actually
  // happen, and treat as a click if it didn't.
  function leftButtonStartDrag(cm, e, start, modifier) {

  // Start a text drag. When it ends, see if any dragging actually
  // happen, and treat as a click if it didn't.
  function leftButtonStartDrag(cm, e, start, modifier) {

    var display = cm.display, doc = cm.doc;
    e_preventDefault(e);

    var display = cm.display, doc = cm.doc;
    e_preventDefault(e);

    if (addNew && !e.shiftKey) {
      ourIndex = doc.sel.contains(start);
      if (ourIndex > -1)

    if (addNew && !e.shiftKey) {
      ourIndex = doc.sel.contains(start);
      if (ourIndex > -1)

      else
        ourRange = new Range(start, start);
    } else {

      else
        ourRange = new Range(start, start);
    } else {

      start = posFromMouse(cm, e, true, true);
      ourIndex = -1;
    } else if (type == "double") {

      start = posFromMouse(cm, e, true, true);
      ourIndex = -1;
    } else if (type == "double") {

      if (cm.display.shift || doc.extend)
        ourRange = extendRange(doc, ourRange, word.anchor, word.head);
      else

      if (cm.display.shift || doc.extend)
        ourRange = extendRange(doc, ourRange, word.anchor, word.head);
      else

      ourIndex = 0;
      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
      startSel = doc.sel;

      ourIndex = 0;
      setSelection(doc, new Selection([ourRange], 0), sel_mouse);
      startSel = doc.sel;

                   {scroll: false, origin: "*mouse"});

                   {scroll: false, origin: "*mouse"});

    }

    var lastPos = start;

    }

    var lastPos = start;

        var anchor = oldRange.anchor, head = pos;
        if (type != "single") {
          if (type == "double")

        var anchor = oldRange.anchor, head = pos;
        if (type != "single") {
          if (type == "double")

          else
            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
          if (cmp(range.anchor, anchor) > 0) {

          else
            var range = new Range(Pos(pos.line, 0), clipPos(doc, Pos(pos.line + 1, 0)));
          if (cmp(range.anchor, anchor) > 0) {

  function setScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
    cm.doc.scrollTop = val;

  function setScrollTop(cm, val) {
    if (Math.abs(cm.doc.scrollTop - val) < 2) return;
    cm.doc.scrollTop = val;

    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;

    if (cm.display.scroller.scrollTop != val) cm.display.scroller.scrollTop = val;

    startWorker(cm, 100);
  }
  // Sync scroller and scrollbar, ensure the gutter elements are

    startWorker(cm, 100);
  }
  // Sync scroller and scrollbar, ensure the gutter elements are

    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;

    cm.doc.scrollLeft = val;
    alignHorizontally(cm);
    if (cm.display.scroller.scrollLeft != val) cm.display.scroller.scrollLeft = val;

  }

  // Since the delta values reported on mouse wheel events are

  }

  // Since the delta values reported on mouse wheel events are

  else if (chrome) wheelPixelsPerUnit = -.7;
  else if (safari) wheelPixelsPerUnit = -1/3;

  else if (chrome) wheelPixelsPerUnit = -.7;
  else if (safari) wheelPixelsPerUnit = -1/3;

    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
    else if (dy == null) dy = e.wheelDelta;

    var dx = e.wheelDeltaX, dy = e.wheelDeltaY;
    if (dx == null && e.detail && e.axis == e.HORIZONTAL_AXIS) dx = e.detail;
    if (dy == null && e.detail && e.axis == e.VERTICAL_AXIS) dy = e.detail;
    else if (dy == null) dy = e.wheelDelta;

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here

    var display = cm.display, scroll = display.scroller;
    // Quit if there's nothing to scroll here

      e_preventDefault(e);
      display.wheelStartX = null; // Abort measurement, if in progress
      return;

      e_preventDefault(e);
      display.wheelStartX = null; // Abort measurement, if in progress
      return;

    // 'Project' the visible viewport to cover the area that is being
    // scrolled into view (if we know enough to estimate it).

    // 'Project' the visible viewport to cover the area that is being
    // scrolled into view (if we know enough to estimate it).

      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) top = Math.max(0, top + pixels - 50);
      else bot = Math.min(cm.doc.height, bot + pixels + 50);

      var top = cm.doc.scrollTop, bot = top + display.wrapper.clientHeight;
      if (pixels < 0) top = Math.max(0, top + pixels - 50);
      else bot = Math.min(cm.doc.height, bot + pixels + 50);

    }

    if (wheelSamples < 20) {

    }

    if (wheelSamples < 20) {

      cm.state.suppressEdits = false;
    }
    return done;

      cm.state.suppressEdits = false;
    }
    return done;

  }

  }

  // Handle a key from the keydown event.
  function handleKeyBinding(cm, e) {

  // Handle a key from the keydown event.
  function handleKeyBinding(cm, e) {

    if (!name) return false;

    if (!name) return false;

      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.

      // First try to resolve full name (including 'Shift-'). Failing
      // that, see if there is a cursor-motion command (starting with
      // 'go') bound to the keyname without 'Shift-'.

    }

    }

  }

  // Handle a key from the keypress event
  function handleCharBinding(cm, e, ch) {

  }

  // Handle a key from the keypress event
  function handleCharBinding(cm, e, ch) {

  }

  var lastStoppedKey = null;

  }

  var lastStoppedKey = null;

    // Turn mouse into crosshair when Alt is held on Mac.
    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
      showCrossHair(cm);

    // Turn mouse into crosshair when Alt is held on Mac.
    if (code == 18 && !/\bCodeMirror-crosshair\b/.test(cm.display.lineDiv.className))
      showCrossHair(cm);

  function showCrossHair(cm) {
    var lineDiv = cm.display.lineDiv;

  function showCrossHair(cm) {
    var lineDiv = cm.display.lineDiv;

  }

  function onKeyUp(e) {

  }

  function onKeyUp(e) {

    if (e.keyCode == 16) this.doc.sel.shift = false;

    if (e.keyCode == 16) this.doc.sel.shift = false;

  }

  function onKeyPress(e) {
    var cm = this;

  }

  function onKeyPress(e) {
    var cm = this;

    var keyCode = e.keyCode, charCode = e.charCode;
    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
    if (((presto && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;

    var keyCode = e.keyCode, charCode = e.charCode;
    if (presto && keyCode == lastStoppedKey) {lastStoppedKey = null; e_preventDefault(e); return;}
    if (((presto && (!e.which || e.which < 10)) || khtml) && handleKeyBinding(cm, e)) return;

      "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
      (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
      "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";

      "px; left: " + (e.clientX - 5) + "px; z-index: 1000; background: " +
      (ie ? "rgba(255, 255, 255, .05)" : "transparent") +
      "; outline: none; border-width: 0; outline: none; overflow: hidden; opacity: .05; filter: alpha(opacity=5);";

    focusInput(cm);

    focusInput(cm);

    resetInput(cm);
    // Adds "Select all" to context menu in FF
    if (!cm.somethingSelected()) display.input.value = display.prevInput = " ";

    resetInput(cm);
    // Adds "Select all" to context menu in FF
    if (!cm.somethingSelected()) display.input.value = display.prevInput = " ";

    display.selForContextMenu = cm.doc.sel;
    clearTimeout(display.detectingSelectAll);

    display.selForContextMenu = cm.doc.sel;
    clearTimeout(display.detectingSelectAll);

      }
    }
    function rehide() {

      }
    }
    function rehide() {

      display.inputDiv.style.position = "relative";
      display.input.style.cssText = oldCSS;

      display.inputDiv.style.position = "relative";
      display.input.style.cssText = oldCSS;

      slowPoll(cm);

      // Try to detect the user choosing select-all

      slowPoll(cm);

      // Try to detect the user choosing select-all

      event = source[i];
      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
        break;

      event = source[i];
      if (allowSelectionOnly ? event.ranges && !event.equals(doc.sel) : !event.ranges)
        break;

    if (i == source.length) return;
    hist.lastOrigin = hist.lastSelOrigin = null;

    if (i == source.length) return;
    hist.lastOrigin = hist.lastSelOrigin = null;

      antiChanges.push(historyChangeFromChange(doc, change));

      antiChanges.push(historyChangeFromChange(doc, change));

      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));

      makeChangeSingleDoc(doc, change, after, mergeOldSpans(doc, change));

      var rebased = [];

      // Propagate to the linked documents

      var rebased = [];

      // Propagate to the linked documents

    change.removed = getBetween(doc, change.from, change.to);

    change.removed = getBetween(doc, change.from, change.to);

    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
    else updateDoc(doc, change, spans);
    setSelectionNoUndo(doc, selAfter, sel_dontScroll);

    if (doc.cm) makeChangeSingleDocInEditor(doc.cm, change, spans);
    else updateDoc(doc, change, spans);
    setSelectionNoUndo(doc, selAfter, sel_dontScroll);

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display

    var lendiff = change.text.length - (to.line - from.line) - 1;
    // Remember that these lines changed, for updating the display

      regLineChange(cm, from.line, "text");
    else
      regChange(cm, from.line, to.line + 1, lendiff);

      regLineChange(cm, from.line, "text");
    else
      regChange(cm, from.line, to.line + 1, lendiff);

  // If an editor sits on the top or bottom of the window, partially
  // scrolled out of view, this ensures that the cursor is visible.
  function maybeScrollWindow(cm, coords) {

  // If an editor sits on the top or bottom of the window, partially
  // scrolled out of view, this ensures that the cursor is visible.
  function maybeScrollWindow(cm, coords) {

    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
    if (coords.top + box.top < 0) doScroll = true;
    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
    if (doScroll != null && !phantom) {
      var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
                           (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +

    var display = cm.display, box = display.sizer.getBoundingClientRect(), doScroll = null;
    if (coords.top + box.top < 0) doScroll = true;
    else if (coords.bottom + box.top > (window.innerHeight || document.documentElement.clientHeight)) doScroll = false;
    if (doScroll != null && !phantom) {
      var scrollNode = elt("div", "\u200b", null, "position: absolute; top: " +
                           (coords.top - display.viewOffset - paddingTop(cm.display)) + "px; height: " +

                           coords.left + "px; width: 2px;");
      cm.display.lineSpace.appendChild(scrollNode);
      scrollNode.scrollIntoView(doScroll);

                           coords.left + "px; width: 2px;");
      cm.display.lineSpace.appendChild(scrollNode);
      scrollNode.scrollIntoView(doScroll);

  // measured, the position of something may 'drift' during drawing).
  function scrollPosIntoView(cm, pos, end, margin) {
    if (margin == null) margin = 0;

  // measured, the position of something may 'drift' during drawing).
  function scrollPosIntoView(cm, pos, end, margin) {
    if (margin == null) margin = 0;

      var changed = false, coords = cursorCoords(cm, pos);
      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),

      var changed = false, coords = cursorCoords(cm, pos);
      var endCoords = !end || end == pos ? coords : cursorCoords(cm, end);
      var scrollPos = calculateScrollPos(cm, Math.min(coords.left, endCoords.left),

        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
      }

        setScrollLeft(cm, scrollPos.scrollLeft);
        if (Math.abs(cm.doc.scrollLeft - startLeft) > 1) changed = true;
      }

    }

    }

  // Scroll a given set of coordinates into view (immediately).
  function scrollIntoView(cm, x1, y1, x2, y2) {
    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);

  // Scroll a given set of coordinates into view (immediately).
  function scrollIntoView(cm, x1, y1, x2, y2) {
    var scrollPos = calculateScrollPos(cm, x1, y1, x2, y2);
    if (scrollPos.scrollTop != null) setScrollTop(cm, scrollPos.scrollTop);
    if (scrollPos.scrollLeft != null) setScrollLeft(cm, scrollPos.scrollLeft);

  // Calculate a new scroll position needed to scroll the given
  // rectangle into view. Returns an object with scrollTop and
  // scrollLeft properties. When these are undefined, the

  // Calculate a new scroll position needed to scroll the given
  // rectangle into view. Returns an object with scrollTop and
  // scrollLeft properties. When these are undefined, the

    var display = cm.display, snapMargin = textHeight(cm.display);
    if (y1 < 0) y1 = 0;
    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;

    var display = cm.display, snapMargin = textHeight(cm.display);
    if (y1 < 0) y1 = 0;
    var screentop = cm.curOp && cm.curOp.scrollTop != null ? cm.curOp.scrollTop : display.scroller.scrollTop;

    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
    if (y1 < screentop) {

    var docBottom = cm.doc.height + paddingVert(display);
    var atTop = y1 < snapMargin, atBottom = y2 > docBottom - snapMargin;
    if (y1 < screentop) {

    }

    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;

    }

    var screenleft = cm.curOp && cm.curOp.scrollLeft != null ? cm.curOp.scrollLeft : display.scroller.scrollLeft;

    return result;
  }

    return result;
  }

    if (how == "smart") {
      // Fall back to "prev" when the mode doesn't have an indentation
      // method.

    if (how == "smart") {
      // Fall back to "prev" when the mode doesn't have an indentation
      // method.

      else state = getStateBefore(cm, n);
    }

      else state = getStateBefore(cm, n);
    }

      indentation = 0;
      how = "not";
    } else if (how == "smart") {

      indentation = 0;
      how = "not";
    } else if (how == "smart") {

        if (!aggressive) return;
        how = "prev";
      }

        if (!aggressive) return;
        how = "prev";
      }

    if (pos < indentation) indentString += spaceStr(indentation - pos);

    if (indentString != curSpaceString) {

    if (pos < indentation) indentString += spaceStr(indentation - pos);

    if (indentString != curSpaceString) {

    } else {
      // Ensure that, if the cursor was in the whitespace at the start
      // of the line, it is moved to the end of that space.

    } else {
      // Ensure that, if the cursor was in the whitespace at the start
      // of the line, it is moved to the end of that space.

        if (type) sawType = type;
        if (dir > 0 && !moveOnce(!first)) break;

        if (type) sawType = type;
        if (dir > 0 && !moveOnce(!first)) break;

    }
    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
    if (!possible) result.hitSide = true;

    }
    var result = skipAtomic(doc, Pos(line, ch), origDir, true);
    if (!possible) result.hitSide = true;

      y += dir * 5;
    }
    return target;

      y += dir * 5;
    }
    return target;

  }

  // EDITOR METHODS

  }

  // EDITOR METHODS

    getDoc: function() {return this.doc;},

    addKeyMap: function(map, bottom) {

    getDoc: function() {return this.doc;},

    addKeyMap: function(map, bottom) {

    },
    removeKeyMap: function(map) {
      var maps = this.state.keyMaps;
      for (var i = 0; i < maps.length; ++i)

    },
    removeKeyMap: function(map) {
      var maps = this.state.keyMaps;
      for (var i = 0; i < maps.length; ++i)

          maps.splice(i, 1);
          return true;
        }

          maps.splice(i, 1);
          return true;
        }

        else dir = dir ? "add" : "subtract";
      }
      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);

        else dir = dir ? "add" : "subtract";
      }
      if (isLine(this.doc, n)) indentLine(this, n, dir, aggressive);

    indentSelection: methodOp(function(how) {
      var ranges = this.doc.sel.ranges, end = -1;
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (!range.empty()) {

    indentSelection: methodOp(function(how) {
      var ranges = this.doc.sel.ranges, end = -1;
      for (var i = 0; i < ranges.length; i++) {
        var range = ranges[i];
        if (!range.empty()) {

          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
          for (var j = start; j < end; ++j)
            indentLine(this, j, how);

          end = Math.min(this.lastLine(), to.line - (to.ch ? 0 : 1)) + 1;
          for (var j = start; j < end; ++j)
            indentLine(this, j, how);

        } else if (range.head.line > end) {
          indentLine(this, range.head.line, how, true);
          end = range.head.line;
          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);

        } else if (range.head.line > end) {
          indentLine(this, range.head.line, how, true);
          end = range.head.line;
          if (i == this.doc.sel.primIndex) ensureCursorVisible(this);

    // Fetch the parser token for a given character. Useful for hacks
    // that want to inspect the mode state (say, for completion).
    getTokenAt: function(pos, precise) {

    // Fetch the parser token for a given character. Useful for hacks
    // that want to inspect the mode state (say, for completion).
    getTokenAt: function(pos, precise) {

    },

    getTokenTypeAt: function(pos) {

    },

    getTokenTypeAt: function(pos) {

      }
      var cut = type ? type.indexOf("cm-overlay ") : -1;
      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);

      }
      var cut = type ? type.indexOf("cm-overlay ") : -1;
      return cut < 0 ? type : cut == 0 ? null : type.slice(0, cut - 1);

    getModeAt: function(pos) {
      var mode = this.doc.mode;
      if (!mode.innerMode) return mode;

    getModeAt: function(pos) {
      var mode = this.doc.mode;
      if (!mode.innerMode) return mode;

        found.push(help[mode.helperType]);
      } else if (help[mode.name]) {
        found.push(help[mode.name]);

        found.push(help[mode.helperType]);
      } else if (help[mode.name]) {
        found.push(help[mode.name]);

      for (var i = 0; i < help._global.length; i++) {
        var cur = help._global[i];
        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
          found.push(cur.val);
      }
      return found;

      for (var i = 0; i < help._global.length; i++) {
        var cur = help._global[i];
        if (cur.pred(mode, this) && indexOf(found, cur.val) == -1)
          found.push(cur.val);
      }
      return found;

    getStateAfter: function(line, precise) {
      var doc = this.doc;
      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
      return getStateBefore(this, line + 1, precise);

    getStateAfter: function(line, precise) {
      var doc = this.doc;
      line = clipLine(doc, line == null ? doc.first + doc.size - 1: line);
      return getStateBefore(this, line + 1, precise);

    cursorCoords: function(start, mode) {
      var pos, range = this.doc.sel.primary();
      if (start == null) pos = range.head;

    cursorCoords: function(start, mode) {
      var pos, range = this.doc.sel.primary();
      if (start == null) pos = range.head;

        markers[gutterID] = value;
        if (!value && isEmpty(markers)) line.gutterMarkers = null;
        return true;

        markers[gutterID] = value;
        if (!value && isEmpty(markers)) line.gutterMarkers = null;
        return true;

    clearGutter: methodOp(function(gutterID) {
      var cm = this, doc = cm.doc, i = doc.first;
      doc.iter(function(line) {

    clearGutter: methodOp(function(gutterID) {
      var cm = this, doc = cm.doc, i = doc.first;
      doc.iter(function(line) {

      pos = cursorCoords(this, clipPos(this.doc, pos));
      var top = pos.bottom, left = pos.left;
      node.style.position = "absolute";

      pos = cursorCoords(this, clipPos(this.doc, pos));
      var top = pos.bottom, left = pos.left;
      node.style.position = "absolute";

      display.sizer.appendChild(node);
      if (vert == "over") {
        top = pos.top;

      display.sizer.appendChild(node);
      if (vert == "over") {
        top = pos.top;

          top = pos.bottom;
        if (left + node.offsetWidth > hspace)
          left = hspace - node.offsetWidth;

          top = pos.bottom;
        if (left + node.offsetWidth > hspace)
          left = hspace - node.offsetWidth;

      node.style.top = top + "px";
      node.style.left = node.style.right = "";
      if (horiz == "right") {

      node.style.top = top + "px";
      node.style.left = node.style.right = "";
      if (horiz == "right") {

      }
      if (scroll)
        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);

      }
      if (scroll)
        scrollIntoView(this, left, top, left + node.offsetWidth, top + node.offsetHeight);

    triggerOnKeyDown: methodOp(onKeyDown),
    triggerOnKeyPress: methodOp(onKeyPress),

    triggerOnKeyDown: methodOp(onKeyDown),
    triggerOnKeyPress: methodOp(onKeyPress),

    execCommand: function(cmd) {
      if (commands.hasOwnProperty(cmd))

    execCommand: function(cmd) {
      if (commands.hasOwnProperty(cmd))

          var other = findPosH(doc, range.head, dir, unit, false);
          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
        });

          var other = findPosH(doc, range.head, dir, unit, false);
          return dir < 0 ? {from: other, to: range.head} : {from: range.head, to: other};
        });

    findPosV: function(from, amount, unit, goalColumn) {
      var dir = 1, x = goalColumn;
      if (amount < 0) { dir = -1; amount = -amount; }

    findPosV: function(from, amount, unit, goalColumn) {
      var dir = 1, x = goalColumn;
      if (amount < 0) { dir = -1; amount = -amount; }

      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
        doc.sel.ranges[i].goalColumn = goals[i];
    }),

      if (goals.length) for (var i = 0; i < doc.sel.ranges.length; i++)
        doc.sel.ranges[i].goalColumn = goals[i];
    }),

    toggleOverwrite: function(value) {
      if (value != null && value == this.state.overwrite) return;

    toggleOverwrite: function(value) {
      if (value != null && value == this.state.overwrite) return;

      if (y != null) this.curOp.scrollTop = y;
    }),
    getScrollInfo: function() {

      if (y != null) this.curOp.scrollTop = y;
    }),
    getScrollInfo: function() {

      return {left: scroller.scrollLeft, top: scroller.scrollTop,

      return {left: scroller.scrollLeft, top: scroller.scrollTop,

    },

    scrollIntoView: methodOp(function(range, margin) {

    },

    scrollIntoView: methodOp(function(range, margin) {

      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
        estimateLineHeights(this);
      signal(this, "refresh", this);

      if (oldHeight == null || Math.abs(oldHeight - textHeight(this.display)) > .5)
        estimateLineHeights(this);
      signal(this, "refresh", this);

    swapDoc: methodOp(function(doc) {
      var old = this.doc;
      old.cm = null;

    swapDoc: methodOp(function(doc) {
      var old = this.doc;
      old.cm = null;

      clearCaches(this);
      resetInput(this);
      this.scrollTo(doc.scrollLeft, doc.scrollTop);

      clearCaches(this);
      resetInput(this);
      this.scrollTo(doc.scrollLeft, doc.scrollTop);

      signalLater(this, "swapDoc", this, old);
      return old;
    }),

      signalLater(this, "swapDoc", this, old);
      return old;
    }),

    clearCaches(cm);
    regChange(cm);
  }, true);

    clearCaches(cm);
    regChange(cm);
  }, true);

    cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
    cm.refresh();
  }, true);

    cm.options.specialChars = new RegExp(val.source + (val.test("\t") ? "" : "|\t"), "g");
    cm.refresh();
  }, true);

    themeChanged(cm);
    guttersChanged(cm);
  }, true);

    themeChanged(cm);
    guttersChanged(cm);
  }, true);

  option("extraKeys", null);

  option("lineWrapping", false, wrappingChanged, true);

  option("extraKeys", null);

  option("lineWrapping", false, wrappingChanged, true);

    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
    cm.refresh();
  }, true);

    cm.display.gutters.style.left = val ? compensateForHScroll(cm.display) + "px" : "0";
    cm.refresh();
  }, true);

  option("lineNumbers", false, function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);

  option("lineNumbers", false, function(cm) {
    setGuttersForLineNumbers(cm.options);
    guttersChanged(cm);

  // load a mode. (Preferred mechanism is the require/define calls.)
  CodeMirror.defineMode = function(name, mode) {
    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;

  // load a mode. (Preferred mechanism is the require/define calls.)
  CodeMirror.defineMode = function(name, mode) {
    if (!CodeMirror.defaults.mode && name != "null") CodeMirror.defaults.mode = name;

    modes[name] = mode;
  };

    modes[name] = mode;
  };

  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
    CodeMirror.registerHelper(type, name, value);
    helpers[type]._global.push({pred: predicate, val: value});

  CodeMirror.registerGlobalHelper = function(type, name, predicate, value) {
    CodeMirror.registerHelper(type, name, value);
    helpers[type]._global.push({pred: predicate, val: value});

  // MODE STATE HANDLING

  // MODE STATE HANDLING

    delLineLeft: function(cm) {
      deleteNearSelection(cm, function(range) {
        return {from: Pos(range.from().line, 0), to: range.from()};

    delLineLeft: function(cm) {
      deleteNearSelection(cm, function(range) {
        return {from: Pos(range.from().line, 0), to: range.from()};

      });
    },
    undo: function(cm) {cm.undo();},

      });
    },
    undo: function(cm) {cm.undo();},

    },
    goLineStartSmart: function(cm) {
      cm.extendSelectionsBy(function(range) {

    },
    goLineStartSmart: function(cm) {
      cm.extendSelectionsBy(function(range) {

      }, {origin: "+move", bias: 1});
    },
    goLineEnd: function(cm) {

      }, {origin: "+move", bias: 1});
    },
    goLineEnd: function(cm) {

      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        return cm.coordsChar({left: 0, top: top}, "div");

      cm.extendSelectionsBy(function(range) {
        var top = cm.charCoords(range.head, "div").top + 5;
        return cm.coordsChar({left: 0, top: top}, "div");

      }, sel_move);
    },
    goLineUp: function(cm) {cm.moveV(-1, "line");},

      }, sel_move);
    },
    goLineUp: function(cm) {cm.moveV(-1, "line");},

    },
    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
  };

    },
    toggleOverwrite: function(cm) {cm.toggleOverwrite();}
  };

  // STANDARD KEYMAPS

  // STANDARD KEYMAPS

  var keyMap = CodeMirror.keyMap = {};

  var keyMap = CodeMirror.keyMap = {};

  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",

  keyMap.basic = {
    "Left": "goCharLeft", "Right": "goCharRight", "Up": "goLineUp", "Down": "goLineDown",
    "End": "goLineEnd", "Home": "goLineStartSmart", "PageUp": "goPageUp", "PageDown": "goPageDown",

  // are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",

  // are simply ignored.
  keyMap.pcDefault = {
    "Ctrl-A": "selectAll", "Ctrl-D": "deleteLine", "Ctrl-Z": "undo", "Shift-Ctrl-Z": "redo", "Ctrl-Y": "redo",

    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
    fallthrough: "basic"

    "Ctrl-Left": "goGroupLeft", "Ctrl-Right": "goGroupRight", "Alt-Left": "goLineStart", "Alt-Right": "goLineEnd",
    "Ctrl-Backspace": "delGroupBefore", "Ctrl-Delete": "delGroupAfter", "Ctrl-S": "save", "Ctrl-F": "find",
    "Ctrl-G": "findNext", "Shift-Ctrl-G": "findPrev", "Shift-Ctrl-F": "replace", "Shift-Ctrl-R": "replaceAll",
    "Ctrl-[": "indentLess", "Ctrl-]": "indentMore",
    "Ctrl-U": "undoSelection", "Shift-Ctrl-U": "redoSelection", "Alt-U": "redoSelection",
    fallthrough: "basic"

  };
  // Very basic readline/emacs-style bindings, which are standard on Mac.
  keyMap.emacsy = {

  };
  // Very basic readline/emacs-style bindings, which are standard on Mac.
  keyMap.emacsy = {

    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"

    "Alt-F": "goWordRight", "Alt-B": "goWordLeft", "Ctrl-A": "goLineStart", "Ctrl-E": "goLineEnd",
    "Ctrl-V": "goPageDown", "Shift-Ctrl-V": "goPageUp", "Ctrl-D": "delCharAfter", "Ctrl-H": "delCharBefore",
    "Alt-D": "delWordAfter", "Alt-Backspace": "delWordBefore", "Ctrl-K": "killLine", "Ctrl-T": "transposeChars"

  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

  };
  keyMap["default"] = mac ? keyMap.macDefault : keyMap.pcDefault;

  // KEYMAP DISPATCH

  // KEYMAP DISPATCH

      }

      }

    }

    }

  // Modifier key presses don't count as 'real' key presses for the
  // purpose of keymap fallthrough.

  // Modifier key presses don't count as 'real' key presses for the
  // purpose of keymap fallthrough.

    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";

    return name == "Ctrl" || name == "Alt" || name == "Shift" || name == "Mod";

  // Look up the name of a key as indicated by an event object.
  var keyName = CodeMirror.keyName = function(event, noShift) {
    if (presto && event.keyCode == 34 && event["char"]) return false;

  // Look up the name of a key as indicated by an event object.
  var keyName = CodeMirror.keyName = function(event, noShift) {
    if (presto && event.keyCode == 34 && event["char"]) return false;

    if (name == null || event.altGraphKey) return false;

    if (name == null || event.altGraphKey) return false;

    return name;
  };

    return name;
  };

  // FROMTEXTAREA

  // FROMTEXTAREA

    cm.save = save;
    cm.getTextArea = function() { return textarea; };
    cm.toTextArea = function() {

    cm.save = save;
    cm.getTextArea = function() { return textarea; };
    cm.toTextArea = function() {

      save();
      textarea.parentNode.removeChild(cm.getWrapperElement());
      textarea.style.display = "";

      save();
      textarea.parentNode.removeChild(cm.getWrapperElement());
      textarea.style.display = "";

      // Showing up as a widget implies collapsed (widget replaces text)
      marker.collapsed = true;
      marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");

      // Showing up as a widget implies collapsed (widget replaces text)
      marker.collapsed = true;
      marker.widgetNode = elt("span", [marker.replacedWith], "CodeMirror-widget");

      if (options.insertLeft) marker.widgetNode.insertLeft = true;
    }
    if (marker.collapsed) {

      if (options.insertLeft) marker.widgetNode.insertLeft = true;
    }
    if (marker.collapsed) {

      if (updateMaxLine) cm.curOp.updateMaxLine = true;
      if (marker.collapsed)
        regChange(cm, from.line, to.line + 1);

      if (updateMaxLine) cm.curOp.updateMaxLine = true;
      if (marker.collapsed)
        regChange(cm, from.line, to.line + 1);

        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
      if (marker.atomic) reCheckSelection(cm.doc);
      signalLater(cm, "markerAdded", cm, marker);

        for (var i = from.line; i <= to.line; i++) regLineChange(cm, i, "text");
      if (marker.atomic) reCheckSelection(cm.doc);
      signalLater(cm, "markerAdded", cm, marker);

  // spans partially within the change. Returns an array of span
  // arrays with one element for each line in (after) the change.
  function stretchSpansOverChange(doc, change) {

  // spans partially within the change. Returns an array of span
  // arrays with one element for each line in (after) the change.
  function stretchSpansOverChange(doc, change) {

    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) return null;

    var oldFirst = isLine(doc, change.from.line) && getLine(doc, change.from.line).markedSpans;
    var oldLast = isLine(doc, change.to.line) && getLine(doc, change.to.line).markedSpans;
    if (!oldFirst && !oldLast) return null;

      newMarkers.push(last);
    }
    return newMarkers;

      newMarkers.push(last);
    }
    return newMarkers;

  // Remove spans that are empty and don't have a clearWhenEmpty
  // option of false.

  // Remove spans that are empty and don't have a clearWhenEmpty
  // option of false.

      }
    }
    return parts;

      }
    }
    return parts;