/**
 * @license wysihtml5 v0.3.0_rc2
 * https://github.com/xing/wysihtml5
 *
 * Author: Christopher Blum (https://github.com/tiff)
 *
 * Copyright (C) 2012 XING AG
 * Licensed under the MIT license (MIT)
 *
 */
var wysihtml5 = {
  version: "0.3.0_rc2",
  
  // namespaces
  commands:   {},
  dom:        {},
  quirks:     {},
  toolbar:    {},
  lang:       {},
  selection:  {},
  views:      {},
  
  INVISIBLE_SPACE: "\uFEFF",
  
  EMPTY_FUNCTION: function() {},
  
  ELEMENT_NODE: 1,
  TEXT_NODE:    3,
  
  BACKSPACE_KEY:  8,
  ENTER_KEY:      13,
  ESCAPE_KEY:     27,
  SPACE_KEY:      32,
  DELETE_KEY:     46
};/**
 * @license Rangy, a cross-browser JavaScript range and selection library
 * http://code.google.com/p/rangy/
 *
 * Copyright 2011, Tim Down
 * Licensed under the MIT license.
 * Version: 1.2.2
 * Build date: 13 November 2011
 */
window['rangy'] = (function() {


    var OBJECT = "object", FUNCTION = "function", UNDEFINED = "undefined";

    var domRangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
        "commonAncestorContainer", "START_TO_START", "START_TO_END", "END_TO_START", "END_TO_END"];

    var domRangeMethods = ["setStart", "setStartBefore", "setStartAfter", "setEnd", "setEndBefore",
        "setEndAfter", "collapse", "selectNode", "selectNodeContents", "compareBoundaryPoints", "deleteContents",
        "extractContents", "cloneContents", "insertNode", "surroundContents", "cloneRange", "toString", "detach"];

    var textRangeProperties = ["boundingHeight", "boundingLeft", "boundingTop", "boundingWidth", "htmlText", "text"];

    // Subset of TextRange's full set of methods that we're interested in
    var textRangeMethods = ["collapse", "compareEndPoints", "duplicate", "getBookmark", "moveToBookmark",
        "moveToElementText", "parentElement", "pasteHTML", "select", "setEndPoint", "getBoundingClientRect"];

    /*----------------------------------------------------------------------------------------------------------------*/

    // Trio of functions taken from Peter Michaux's article:
    // http://peter.michaux.ca/articles/feature-detection-state-of-the-art-browser-scripting
    function isHostMethod(o, p) {
        var t = typeof o[p];
        return t == FUNCTION || (!!(t == OBJECT && o[p])) || t == "unknown";
    }

    function isHostObject(o, p) {
        return !!(typeof o[p] == OBJECT && o[p]);
    }

    function isHostProperty(o, p) {
        return typeof o[p] != UNDEFINED;
    }

    // Creates a convenience function to save verbose repeated calls to tests functions
    function createMultiplePropertyTest(testFunc) {
        return function(o, props) {
            var i = props.length;
            while (i--) {
                if (!testFunc(o, props[i])) {
                    return false;
                }
            }
            return true;
        };
    }

    // Next trio of functions are a convenience to save verbose repeated calls to previous two functions
    var areHostMethods = createMultiplePropertyTest(isHostMethod);
    var areHostObjects = createMultiplePropertyTest(isHostObject);
    var areHostProperties = createMultiplePropertyTest(isHostProperty);

    function isTextRange(range) {
        return range && areHostMethods(range, textRangeMethods) && areHostProperties(range, textRangeProperties);
    }

    var api = {
        version: "1.2.2",
        initialized: false,
        supported: true,

        util: {
            isHostMethod: isHostMethod,
            isHostObject: isHostObject,
            isHostProperty: isHostProperty,
            areHostMethods: areHostMethods,
            areHostObjects: areHostObjects,
            areHostProperties: areHostProperties,
            isTextRange: isTextRange
        },

        features: {},

        modules: {},
        config: {
            alertOnWarn: false,
            preferTextRange: false
        }
    };

    function fail(reason) {
        window.alert("Rangy not supported in your browser. Reason: " + reason);
        api.initialized = true;
        api.supported = false;
    }

    api.fail = fail;

    function warn(msg) {
        var warningMessage = "Rangy warning: " + msg;
        if (api.config.alertOnWarn) {
            window.alert(warningMessage);
        } else if (typeof window.console != UNDEFINED && typeof window.console.log != UNDEFINED) {
            window.console.log(warningMessage);
        }
    }

    api.warn = warn;

    if ({}.hasOwnProperty) {
        api.util.extend = function(o, props) {
            for (var i in props) {
                if (props.hasOwnProperty(i)) {
                    o[i] = props[i];
                }
            }
        };
    } else {
        fail("hasOwnProperty not supported");
    }

    var initListeners = [];
    var moduleInitializers = [];

    // Initialization
    function init() {
        if (api.initialized) {
            return;
        }
        var testRange;
        var implementsDomRange = false, implementsTextRange = false;

        // First, perform basic feature tests

        if (isHostMethod(document, "createRange")) {
            testRange = document.createRange();
            if (areHostMethods(testRange, domRangeMethods) && areHostProperties(testRange, domRangeProperties)) {
                implementsDomRange = true;
            }
            testRange.detach();
        }

        var body = isHostObject(document, "body") ? document.body : document.getElementsByTagName("body")[0];

        if (body && isHostMethod(body, "createTextRange")) {
            testRange = body.createTextRange();
            if (isTextRange(testRange)) {
                implementsTextRange = true;
            }
        }

        if (!implementsDomRange && !implementsTextRange) {
            fail("Neither Range nor TextRange are implemented");
        }

        api.initialized = true;
        api.features = {
            implementsDomRange: implementsDomRange,
            implementsTextRange: implementsTextRange
        };

        // Initialize modules and call init listeners
        var allListeners = moduleInitializers.concat(initListeners);
        for (var i = 0, len = allListeners.length; i < len; ++i) {
            try {
                allListeners[i](api);
            } catch (ex) {
                if (isHostObject(window, "console") && isHostMethod(window.console, "log")) {
                    window.console.log("Init listener threw an exception. Continuing.", ex);
                }

            }
        }
    }

    // Allow external scripts to initialize this library in case it's loaded after the document has loaded
    api.init = init;

    // Execute listener immediately if already initialized
    api.addInitListener = function(listener) {
        if (api.initialized) {
            listener(api);
        } else {
            initListeners.push(listener);
        }
    };

    var createMissingNativeApiListeners = [];

    api.addCreateMissingNativeApiListener = function(listener) {
        createMissingNativeApiListeners.push(listener);
    };

    function createMissingNativeApi(win) {
        win = win || window;
        init();

        // Notify listeners
        for (var i = 0, len = createMissingNativeApiListeners.length; i < len; ++i) {
            createMissingNativeApiListeners[i](win);
        }
    }

    api.createMissingNativeApi = createMissingNativeApi;

    /**
     * @constructor
     */
    function Module(name) {
        this.name = name;
        this.initialized = false;
        this.supported = false;
    }

    Module.prototype.fail = function(reason) {
        this.initialized = true;
        this.supported = false;

        throw new Error("Module '" + this.name + "' failed to load: " + reason);
    };

    Module.prototype.warn = function(msg) {
        api.warn("Module " + this.name + ": " + msg);
    };

    Module.prototype.createError = function(msg) {
        return new Error("Error in Rangy " + this.name + " module: " + msg);
    };

    api.createModule = function(name, initFunc) {
        var module = new Module(name);
        api.modules[name] = module;

        moduleInitializers.push(function(api) {
            initFunc(api, module);
            module.initialized = true;
            module.supported = true;
        });
    };

    api.requireModules = function(modules) {
        for (var i = 0, len = modules.length, module, moduleName; i < len; ++i) {
            moduleName = modules[i];
            module = api.modules[moduleName];
            if (!module || !(module instanceof Module)) {
                throw new Error("Module '" + moduleName + "' not found");
            }
            if (!module.supported) {
                throw new Error("Module '" + moduleName + "' not supported");
            }
        }
    };

    /*----------------------------------------------------------------------------------------------------------------*/

    // Wait for document to load before running tests

    var docReady = false;

    var loadHandler = function(e) {

        if (!docReady) {
            docReady = true;
            if (!api.initialized) {
                init();
            }
        }
    };

    // Test whether we have window and document objects that we will need
    if (typeof window == UNDEFINED) {
        fail("No window found");
        return;
    }
    if (typeof document == UNDEFINED) {
        fail("No document found");
        return;
    }

    if (isHostMethod(document, "addEventListener")) {
        document.addEventListener("DOMContentLoaded", loadHandler, false);
    }

    // Add a fallback in case the DOMContentLoaded event isn't supported
    if (isHostMethod(window, "addEventListener")) {
        window.addEventListener("load", loadHandler, false);
    } else if (isHostMethod(window, "attachEvent")) {
        window.attachEvent("onload", loadHandler);
    } else {
        fail("Window does not have required addEventListener or attachEvent method");
    }

    return api;
})();
rangy.createModule("DomUtil", function(api, module) {

    var UNDEF = "undefined";
    var util = api.util;

    // Perform feature tests
    if (!util.areHostMethods(document, ["createDocumentFragment", "createElement", "createTextNode"])) {
        module.fail("document missing a Node creation method");
    }

    if (!util.isHostMethod(document, "getElementsByTagName")) {
        module.fail("document missing getElementsByTagName method");
    }

    var el = document.createElement("div");
    if (!util.areHostMethods(el, ["insertBefore", "appendChild", "cloneNode"] ||
            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]))) {
        module.fail("Incomplete Element implementation");
    }

    // innerHTML is required for Range's createContextualFragment method
    if (!util.isHostProperty(el, "innerHTML")) {
        module.fail("Element is missing innerHTML property");
    }

    var textNode = document.createTextNode("test");
    if (!util.areHostMethods(textNode, ["splitText", "deleteData", "insertData", "appendData", "cloneNode"] ||
            !util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]) ||
            !util.areHostProperties(textNode, ["data"]))) {
        module.fail("Incomplete Text Node implementation");
    }

    /*----------------------------------------------------------------------------------------------------------------*/

    // Removed use of indexOf because of a bizarre bug in Opera that is thrown in one of the Acid3 tests. I haven't been
    // able to replicate it outside of the test. The bug is that indexOf returns -1 when called on an Array that
    // contains just the document as a single element and the value searched for is the document.
    var arrayContains = /*Array.prototype.indexOf ?
        function(arr, val) {
            return arr.indexOf(val) > -1;
        }:*/

        function(arr, val) {
            var i = arr.length;
            while (i--) {
                if (arr[i] === val) {
                    return true;
                }
            }
            return false;
        };

    // Opera 11 puts HTML elements in the null namespace, it seems, and IE 7 has undefined namespaceURI
    function isHtmlNamespace(node) {
        var ns;
        return typeof node.namespaceURI == UNDEF || ((ns = node.namespaceURI) === null || ns == "http://www.w3.org/1999/xhtml");
    }

    function parentElement(node) {
        var parent = node.parentNode;
        return (parent.nodeType == 1) ? parent : null;
    }

    function getNodeIndex(node) {
        var i = 0;
        while( (node = node.previousSibling) ) {
            i++;
        }
        return i;
    }

    function getNodeLength(node) {
        var childNodes;
        return isCharacterDataNode(node) ? node.length : ((childNodes = node.childNodes) ? childNodes.length : 0);
    }

    function getCommonAncestor(node1, node2) {
        var ancestors = [], n;
        for (n = node1; n; n = n.parentNode) {
            ancestors.push(n);
        }

        for (n = node2; n; n = n.parentNode) {
            if (arrayContains(ancestors, n)) {
                return n;
            }
        }

        return null;
    }

    function isAncestorOf(ancestor, descendant, selfIsAncestor) {
        var n = selfIsAncestor ? descendant : descendant.parentNode;
        while (n) {
            if (n === ancestor) {
                return true;
            } else {
                n = n.parentNode;
            }
        }
        return false;
    }

    function getClosestAncestorIn(node, ancestor, selfIsAncestor) {
        var p, n = selfIsAncestor ? node : node.parentNode;
        while (n) {
            p = n.parentNode;
            if (p === ancestor) {
                return n;
            }
            n = p;
        }
        return null;
    }

    function isCharacterDataNode(node) {
        var t = node.nodeType;
        return t == 3 || t == 4 || t == 8 ; // Text, CDataSection or Comment
    }

    function insertAfter(node, precedingNode) {
        var nextNode = precedingNode.nextSibling, parent = precedingNode.parentNode;
        if (nextNode) {
            parent.insertBefore(node, nextNode);
        } else {
            parent.appendChild(node);
        }
        return node;
    }

    // Note that we cannot use splitText() because it is bugridden in IE 9.
    function splitDataNode(node, index) {
        var newNode = node.cloneNode(false);
        newNode.deleteData(0, index);
        node.deleteData(index, node.length - index);
        insertAfter(newNode, node);
        return newNode;
    }

    function getDocument(node) {
        if (node.nodeType == 9) {
            return node;
        } else if (typeof node.ownerDocument != UNDEF) {
            return node.ownerDocument;
        } else if (typeof node.document != UNDEF) {
            return node.document;
        } else if (node.parentNode) {
            return getDocument(node.parentNode);
        } else {
            throw new Error("getDocument: no document found for node");
        }
    }

    function getWindow(node) {
        var doc = getDocument(node);
        if (typeof doc.defaultView != UNDEF) {
            return doc.defaultView;
        } else if (typeof doc.parentWindow != UNDEF) {
            return doc.parentWindow;
        } else {
            throw new Error("Cannot get a window object for node");
        }
    }

    function getIframeDocument(iframeEl) {
        if (typeof iframeEl.contentDocument != UNDEF) {
            return iframeEl.contentDocument;
        } else if (typeof iframeEl.contentWindow != UNDEF) {
            return iframeEl.contentWindow.document;
        } else {
            throw new Error("getIframeWindow: No Document object found for iframe element");
        }
    }

    function getIframeWindow(iframeEl) {
        if (typeof iframeEl.contentWindow != UNDEF) {
            return iframeEl.contentWindow;
        } else if (typeof iframeEl.contentDocument != UNDEF) {
            return iframeEl.contentDocument.defaultView;
        } else {
            throw new Error("getIframeWindow: No Window object found for iframe element");
        }
    }

    function getBody(doc) {
        return util.isHostObject(doc, "body") ? doc.body : doc.getElementsByTagName("body")[0];
    }

    function getRootContainer(node) {
        var parent;
        while ( (parent = node.parentNode) ) {
            node = parent;
        }
        return node;
    }

    function comparePoints(nodeA, offsetA, nodeB, offsetB) {
        // See http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level-2-Range-Comparing
        var nodeC, root, childA, childB, n;
        if (nodeA == nodeB) {

            // Case 1: nodes are the same
            return offsetA === offsetB ? 0 : (offsetA < offsetB) ? -1 : 1;
        } else if ( (nodeC = getClosestAncestorIn(nodeB, nodeA, true)) ) {

            // Case 2: node C (container B or an ancestor) is a child node of A
            return offsetA <= getNodeIndex(nodeC) ? -1 : 1;
        } else if ( (nodeC = getClosestAncestorIn(nodeA, nodeB, true)) ) {

            // Case 3: node C (container A or an ancestor) is a child node of B
            return getNodeIndex(nodeC) < offsetB  ? -1 : 1;
        } else {

            // Case 4: containers are siblings or descendants of siblings
            root = getCommonAncestor(nodeA, nodeB);
            childA = (nodeA === root) ? root : getClosestAncestorIn(nodeA, root, true);
            childB = (nodeB === root) ? root : getClosestAncestorIn(nodeB, root, true);

            if (childA === childB) {
                // This shouldn't be possible

                throw new Error("comparePoints got to case 4 and childA and childB are the same!");
            } else {
                n = root.firstChild;
                while (n) {
                    if (n === childA) {
                        return -1;
                    } else if (n === childB) {
                        return 1;
                    }
                    n = n.nextSibling;
                }
                throw new Error("Should not be here!");
            }
        }
    }

    function fragmentFromNodeChildren(node) {
        var fragment = getDocument(node).createDocumentFragment(), child;
        while ( (child = node.firstChild) ) {
            fragment.appendChild(child);
        }
        return fragment;
    }

    function inspectNode(node) {
        if (!node) {
            return "[No node]";
        }
        if (isCharacterDataNode(node)) {
            return '"' + node.data + '"';
        } else if (node.nodeType == 1) {
            var idAttr = node.id ? ' id="' + node.id + '"' : "";
            return "<" + node.nodeName + idAttr + ">[" + node.childNodes.length + "]";
        } else {
            return node.nodeName;
        }
    }

    /**
     * @constructor
     */
    function NodeIterator(root) {
        this.root = root;
        this._next = root;
    }

    NodeIterator.prototype = {
        _current: null,

        hasNext: function() {
            return !!this._next;
        },

        next: function() {
            var n = this._current = this._next;
            var child, next;
            if (this._current) {
                child = n.firstChild;
                if (child) {
                    this._next = child;
                } else {
                    next = null;
                    while ((n !== this.root) && !(next = n.nextSibling)) {
                        n = n.parentNode;
                    }
                    this._next = next;
                }
            }
            return this._current;
        },

        detach: function() {
            this._current = this._next = this.root = null;
        }
    };

    function createIterator(root) {
        return new NodeIterator(root);
    }

    /**
     * @constructor
     */
    function DomPosition(node, offset) {
        this.node = node;
        this.offset = offset;
    }

    DomPosition.prototype = {
        equals: function(pos) {
            return this.node === pos.node & this.offset == pos.offset;
        },

        inspect: function() {
            return "[DomPosition(" + inspectNode(this.node) + ":" + this.offset + ")]";
        }
    };

    /**
     * @constructor
     */
    function DOMException(codeName) {
        this.code = this[codeName];
        this.codeName = codeName;
        this.message = "DOMException: " + this.codeName;
    }

    DOMException.prototype = {
        INDEX_SIZE_ERR: 1,
        HIERARCHY_REQUEST_ERR: 3,
        WRONG_DOCUMENT_ERR: 4,
        NO_MODIFICATION_ALLOWED_ERR: 7,
        NOT_FOUND_ERR: 8,
        NOT_SUPPORTED_ERR: 9,
        INVALID_STATE_ERR: 11
    };

    DOMException.prototype.toString = function() {
        return this.message;
    };

    api.dom = {
        arrayContains: arrayContains,
        isHtmlNamespace: isHtmlNamespace,
        parentElement: parentElement,
        getNodeIndex: getNodeIndex,
        getNodeLength: getNodeLength,
        getCommonAncestor: getCommonAncestor,
        isAncestorOf: isAncestorOf,
        getClosestAncestorIn: getClosestAncestorIn,
        isCharacterDataNode: isCharacterDataNode,
        insertAfter: insertAfter,
        splitDataNode: splitDataNode,
        getDocument: getDocument,
        getWindow: getWindow,
        getIframeWindow: getIframeWindow,
        getIframeDocument: getIframeDocument,
        getBody: getBody,
        getRootContainer: getRootContainer,
        comparePoints: comparePoints,
        inspectNode: inspectNode,
        fragmentFromNodeChildren: fragmentFromNodeChildren,
        createIterator: createIterator,
        DomPosition: DomPosition
    };

    api.DOMException = DOMException;
});rangy.createModule("DomRange", function(api, module) {
    api.requireModules( ["DomUtil"] );


    var dom = api.dom;
    var DomPosition = dom.DomPosition;
    var DOMException = api.DOMException;
    
    /*----------------------------------------------------------------------------------------------------------------*/

    // Utility functions

    function isNonTextPartiallySelected(node, range) {
        return (node.nodeType != 3) &&
               (dom.isAncestorOf(node, range.startContainer, true) || dom.isAncestorOf(node, range.endContainer, true));
    }

    function getRangeDocument(range) {
        return dom.getDocument(range.startContainer);
    }

    function dispatchEvent(range, type, args) {
        var listeners = range._listeners[type];
        if (listeners) {
            for (var i = 0, len = listeners.length; i < len; ++i) {
                listeners[i].call(range, {target: range, args: args});
            }
        }
    }

    function getBoundaryBeforeNode(node) {
        return new DomPosition(node.parentNode, dom.getNodeIndex(node));
    }

    function getBoundaryAfterNode(node) {
        return new DomPosition(node.parentNode, dom.getNodeIndex(node) + 1);
    }

    function insertNodeAtPosition(node, n, o) {
        var firstNodeInserted = node.nodeType == 11 ? node.firstChild : node;
        if (dom.isCharacterDataNode(n)) {
            if (o == n.length) {
                dom.insertAfter(node, n);
            } else {
                n.parentNode.insertBefore(node, o == 0 ? n : dom.splitDataNode(n, o));
            }
        } else if (o >= n.childNodes.length) {
            n.appendChild(node);
        } else {
            n.insertBefore(node, n.childNodes[o]);
        }
        return firstNodeInserted;
    }

    function cloneSubtree(iterator) {
        var partiallySelected;
        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
            partiallySelected = iterator.isPartiallySelectedSubtree();

            node = node.cloneNode(!partiallySelected);
            if (partiallySelected) {
                subIterator = iterator.getSubtreeIterator();
                node.appendChild(cloneSubtree(subIterator));
                subIterator.detach(true);
            }

            if (node.nodeType == 10) { // DocumentType
                throw new DOMException("HIERARCHY_REQUEST_ERR");
            }
            frag.appendChild(node);
        }
        return frag;
    }

    function iterateSubtree(rangeIterator, func, iteratorState) {
        var it, n;
        iteratorState = iteratorState || { stop: false };
        for (var node, subRangeIterator; node = rangeIterator.next(); ) {
            //log.debug("iterateSubtree, partially selected: " + rangeIterator.isPartiallySelectedSubtree(), nodeToString(node));
            if (rangeIterator.isPartiallySelectedSubtree()) {
                // The node is partially selected by the Range, so we can use a new RangeIterator on the portion of the
                // node selected by the Range.
                if (func(node) === false) {
                    iteratorState.stop = true;
                    return;
                } else {
                    subRangeIterator = rangeIterator.getSubtreeIterator();
                    iterateSubtree(subRangeIterator, func, iteratorState);
                    subRangeIterator.detach(true);
                    if (iteratorState.stop) {
                        return;
                    }
                }
            } else {
                // The whole node is selected, so we can use efficient DOM iteration to iterate over the node and its
                // descendant
                it = dom.createIterator(node);
                while ( (n = it.next()) ) {
                    if (func(n) === false) {
                        iteratorState.stop = true;
                        return;
                    }
                }
            }
        }
    }

    function deleteSubtree(iterator) {
        var subIterator;
        while (iterator.next()) {
            if (iterator.isPartiallySelectedSubtree()) {
                subIterator = iterator.getSubtreeIterator();
                deleteSubtree(subIterator);
                subIterator.detach(true);
            } else {
                iterator.remove();
            }
        }
    }

    function extractSubtree(iterator) {

        for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {


            if (iterator.isPartiallySelectedSubtree()) {
                node = node.cloneNode(false);
                subIterator = iterator.getSubtreeIterator();
                node.appendChild(extractSubtree(subIterator));
                subIterator.detach(true);
            } else {
                iterator.remove();
            }
            if (node.nodeType == 10) { // DocumentType
                throw new DOMException("HIERARCHY_REQUEST_ERR");
            }
            frag.appendChild(node);
        }
        return frag;
    }

    function getNodesInRange(range, nodeTypes, filter) {
        //log.info("getNodesInRange, " + nodeTypes.join(","));
        var filterNodeTypes = !!(nodeTypes && nodeTypes.length), regex;
        var filterExists = !!filter;
        if (filterNodeTypes) {
            regex = new RegExp("^(" + nodeTypes.join("|") + ")$");
        }

        var nodes = [];
        iterateSubtree(new RangeIterator(range, false), function(node) {
            if ((!filterNodeTypes || regex.test(node.nodeType)) && (!filterExists || filter(node))) {
                nodes.push(node);
            }
        });
        return nodes;
    }

    function inspect(range) {
        var name = (typeof range.getName == "undefined") ? "Range" : range.getName();
        return "[" + name + "(" + dom.inspectNode(range.startContainer) + ":" + range.startOffset + ", " +
                dom.inspectNode(range.endContainer) + ":" + range.endOffset + ")]";
    }

    /*----------------------------------------------------------------------------------------------------------------*/

    // RangeIterator code partially borrows from IERange by Tim Ryan (http://github.com/timcameronryan/IERange)

    /**
     * @constructor
     */
    function RangeIterator(range, clonePartiallySelectedTextNodes) {
        this.range = range;
        this.clonePartiallySelectedTextNodes = clonePartiallySelectedTextNodes;



        if (!range.collapsed) {
            this.sc = range.startContainer;
            this.so = range.startOffset;
            this.ec = range.endContainer;
            this.eo = range.endOffset;
            var root = range.commonAncestorContainer;

            if (this.sc === this.ec && dom.isCharacterDataNode(this.sc)) {
                this.isSingleCharacterDataNode = true;
                this._first = this._last = this._next = this.sc;
            } else {
                this._first = this._next = (this.sc === root && !dom.isCharacterDataNode(this.sc)) ?
                    this.sc.childNodes[this.so] : dom.getClosestAncestorIn(this.sc, root, true);
                this._last = (this.ec === root && !dom.isCharacterDataNode(this.ec)) ?
                    this.ec.childNodes[this.eo - 1] : dom.getClosestAncestorIn(this.ec, root, true);
            }

        }
    }

    RangeIterator.prototype = {
        _current: null,
        _next: null,
        _first: null,
        _last: null,
        isSingleCharacterDataNode: false,

        reset: function() {
            this._current = null;
            this._next = this._first;
        },

        hasNext: function() {
            return !!this._next;
        },

        next: function() {
            // Move to next node
            var current = this._current = this._next;
            if (current) {
                this._next = (current !== this._last) ? current.nextSibling : null;

                // Check for partially selected text nodes
                if (dom.isCharacterDataNode(current) && this.clonePartiallySelectedTextNodes) {
                    if (current === this.ec) {

                        (current = current.cloneNode(true)).deleteData(this.eo, current.length - this.eo);
                    }
                    if (this._current === this.sc) {

                        (current = current.cloneNode(true)).deleteData(0, this.so);
                    }
                }
            }

            return current;
        },

        remove: function() {
            var current = this._current, start, end;

            if (dom.isCharacterDataNode(current) && (current === this.sc || current === this.ec)) {
                start = (current === this.sc) ? this.so : 0;
                end = (current === this.ec) ? this.eo : current.length;
                if (start != end) {
                    current.deleteData(start, end - start);
                }
            } else {
                if (current.parentNode) {
                    current.parentNode.removeChild(current);
                } else {

                }
            }
        },

        // Checks if the current node is partially selected
        isPartiallySelectedSubtree: function() {
            var current = this._current;
            return isNonTextPartiallySelected(current, this.range);
        },

        getSubtreeIterator: function() {
            var subRange;
            if (this.isSingleCharacterDataNode) {
                subRange = this.range.cloneRange();
                subRange.collapse();
            } else {
                subRange = new Range(getRangeDocument(this.range));
                var current = this._current;
                var startContainer = current, startOffset = 0, endContainer = current, endOffset = dom.getNodeLength(current);

                if (dom.isAncestorOf(current, this.sc, true)) {
                    startContainer = this.sc;
                    startOffset = this.so;
                }
                if (dom.isAncestorOf(current, this.ec, true)) {
                    endContainer = this.ec;
                    endOffset = this.eo;
                }

                updateBoundaries(subRange, startContainer, startOffset, endContainer, endOffset);
            }
            return new RangeIterator(subRange, this.clonePartiallySelectedTextNodes);
        },

        detach: function(detachRange) {
            if (detachRange) {
                this.range.detach();
            }
            this.range = this._current = this._next = this._first = this._last = this.sc = this.so = this.ec = this.eo = null;
        }
    };

    /*----------------------------------------------------------------------------------------------------------------*/

    // Exceptions

    /**
     * @constructor
     */
    function RangeException(codeName) {
        this.code = this[codeName];
        this.codeName = codeName;
        this.message = "RangeException: " + this.codeName;
    }

    RangeException.prototype = {
        BAD_BOUNDARYPOINTS_ERR: 1,
        INVALID_NODE_TYPE_ERR: 2
    };

    RangeException.prototype.toString = function() {
        return this.message;
    };

    /*----------------------------------------------------------------------------------------------------------------*/

    /**
     * Currently iterates through all nodes in the range on creation until I think of a decent way to do it
     * TODO: Look into making this a proper iterator, not requiring preloading everything first
     * @constructor
     */
    function RangeNodeIterator(range, nodeTypes, filter) {
        this.nodes = getNodesInRange(range, nodeTypes, filter);
        this._next = this.nodes[0];
        this._position = 0;
    }

    RangeNodeIterator.prototype = {
        _current: null,

        hasNext: function() {
            return !!this._next;
        },

        next: function() {
            this._current = this._next;
            this._next = this.nodes[ ++this._position ];
            return this._current;
        },

        detach: function() {
            this._current = this._next = this.nodes = null;
        }
    };

    var beforeAfterNodeTypes = [1, 3, 4, 5, 7, 8, 10];
    var rootContainerNodeTypes = [2, 9, 11];
    var readonlyNodeTypes = [5, 6, 10, 12];
    var insertableNodeTypes = [1, 3, 4, 5, 7, 8, 10, 11];
    var surroundNodeTypes = [1, 3, 4, 5, 7, 8];

    function createAncestorFinder(nodeTypes) {
        return function(node, selfIsAncestor) {
            var t, n = selfIsAncestor ? node : node.parentNode;
            while (n) {
                t = n.nodeType;
                if (dom.arrayContains(nodeTypes, t)) {
                    return n;
                }
                n = n.parentNode;
            }
            return null;
        };
    }

    var getRootContainer = dom.getRootContainer;
    var getDocumentOrFragmentContainer = createAncestorFinder( [9, 11] );
    var getReadonlyAncestor = createAncestorFinder(readonlyNodeTypes);
    var getDocTypeNotationEntityAncestor = createAncestorFinder( [6, 10, 12] );

    function assertNoDocTypeNotationEntityAncestor(node, allowSelf) {
        if (getDocTypeNotationEntityAncestor(node, allowSelf)) {
            throw new RangeException("INVALID_NODE_TYPE_ERR");
        }
    }

    function assertNotDetached(range) {
        if (!range.startContainer) {
            throw new DOMException("INVALID_STATE_ERR");
        }
    }

    function assertValidNodeType(node, invalidTypes) {
        if (!dom.arrayContains(invalidTypes, node.nodeType)) {
            throw new RangeException("INVALID_NODE_TYPE_ERR");
        }
    }

    function assertValidOffset(node, offset) {
        if (offset < 0 || offset > (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length)) {
            throw new DOMException("INDEX_SIZE_ERR");
        }
    }

    function assertSameDocumentOrFragment(node1, node2) {
        if (getDocumentOrFragmentContainer(node1, true) !== getDocumentOrFragmentContainer(node2, true)) {
            throw new DOMException("WRONG_DOCUMENT_ERR");
        }
    }

    function assertNodeNotReadOnly(node) {
        if (getReadonlyAncestor(node, true)) {
            throw new DOMException("NO_MODIFICATION_ALLOWED_ERR");
        }
    }

    function assertNode(node, codeName) {
        if (!node) {
            throw new DOMException(codeName);
        }
    }

    function isOrphan(node) {
        return !dom.arrayContains(rootContainerNodeTypes, node.nodeType) && !getDocumentOrFragmentContainer(node, true);
    }

    function isValidOffset(node, offset) {
        return offset <= (dom.isCharacterDataNode(node) ? node.length : node.childNodes.length);
    }

    function assertRangeValid(range) {
        assertNotDetached(range);
        if (isOrphan(range.startContainer) || isOrphan(range.endContainer) ||
                !isValidOffset(range.startContainer, range.startOffset) ||
                !isValidOffset(range.endContainer, range.endOffset)) {
            throw new Error("Range error: Range is no longer valid after DOM mutation (" + range.inspect() + ")");
        }
    }

    /*----------------------------------------------------------------------------------------------------------------*/

    // Test the browser's innerHTML support to decide how to implement createContextualFragment
    var styleEl = document.createElement("style");
    var htmlParsingConforms = false;
    try {
        styleEl.innerHTML = "<b>x</b>";
        htmlParsingConforms = (styleEl.firstChild.nodeType == 3); // Opera incorrectly creates an element node
    } catch (e) {
        // IE 6 and 7 throw
    }

    api.features.htmlParsingConforms = htmlParsingConforms;

    var createContextualFragment = htmlParsingConforms ?

        // Implementation as per HTML parsing spec, trusting in the browser's implementation of innerHTML. See
        // discussion and base code for this implementation at issue 67.
        // Spec: http://html5.org/specs/dom-parsing.html#extensions-to-the-range-interface
        // Thanks to Aleks Williams.
        function(fragmentStr) {
            // "Let node the context object's start's node."
            var node = this.startContainer;
            var doc = dom.getDocument(node);

            // "If the context object's start's node is null, raise an INVALID_STATE_ERR
            // exception and abort these steps."
            if (!node) {
                throw new DOMException("INVALID_STATE_ERR");
            }

            // "Let element be as follows, depending on node's interface:"
            // Document, Document Fragment: null
            var el = null;

            // "Element: node"
            if (node.nodeType == 1) {
                el = node;

            // "Text, Comment: node's parentElement"
            } else if (dom.isCharacterDataNode(node)) {
                el = dom.parentElement(node);
            }

            // "If either element is null or element's ownerDocument is an HTML document
            // and element's local name is "html" and element's namespace is the HTML
            // namespace"
            if (el === null || (
                el.nodeName == "HTML"
                && dom.isHtmlNamespace(dom.getDocument(el).documentElement)
                && dom.isHtmlNamespace(el)
            )) {

            // "let element be a new Element with "body" as its local name and the HTML
            // namespace as its namespace.""
                el = doc.createElement("body");
            } else {
                el = el.cloneNode(false);
            }

            // "If the node's document is an HTML document: Invoke the HTML fragment parsing algorithm."
            // "If the node's document is an XML document: Invoke the XML fragment parsing algorithm."
            // "In either case, the algorithm must be invoked with fragment as the input
            // and element as the context element."
            el.innerHTML = fragmentStr;

            // "If this raises an exception, then abort these steps. Otherwise, let new
            // children be the nodes returned."

            // "Let fragment be a new DocumentFragment."
            // "Append all new children to fragment."
            // "Return fragment."
            return dom.fragmentFromNodeChildren(el);
        } :

        // In this case, innerHTML cannot be trusted, so fall back to a simpler, non-conformant implementation that
        // previous versions of Rangy used (with the exception of using a body element rather than a div)
        function(fragmentStr) {
            assertNotDetached(this);
            var doc = getRangeDocument(this);
            var el = doc.createElement("body");
            el.innerHTML = fragmentStr;

            return dom.fragmentFromNodeChildren(el);
        };

    /*----------------------------------------------------------------------------------------------------------------*/

    var rangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
        "commonAncestorContainer"];

    var s2s = 0, s2e = 1, e2e = 2, e2s = 3;
    var n_b = 0, n_a = 1, n_b_a = 2, n_i = 3;

    function RangePrototype() {}

    RangePrototype.prototype = {
        attachListener: function(type, listener) {
            this._listeners[type].push(listener);
        },

        compareBoundaryPoints: function(how, range) {
            assertRangeValid(this);
            assertSameDocumentOrFragment(this.startContainer, range.startContainer);

            var nodeA, offsetA, nodeB, offsetB;
            var prefixA = (how == e2s || how == s2s) ? "start" : "end";
            var prefixB = (how == s2e || how == s2s) ? "start" : "end";
            nodeA = this[prefixA + "Container"];
            offsetA = this[prefixA + "Offset"];
            nodeB = range[prefixB + "Container"];
            offsetB = range[prefixB + "Offset"];
            return dom.comparePoints(nodeA, offsetA, nodeB, offsetB);
        },

        insertNode: function(node) {
            assertRangeValid(this);
            assertValidNodeType(node, insertableNodeTypes);
            assertNodeNotReadOnly(this.startContainer);

            if (dom.isAncestorOf(node, this.startContainer, true)) {
                throw new DOMException("HIERARCHY_REQUEST_ERR");
            }

            // No check for whether the container of the start of the Range is of a type that does not allow
            // children of the type of node: the browser's DOM implementation should do this for us when we attempt
            // to add the node

            var firstNodeInserted = insertNodeAtPosition(node, this.startContainer, this.startOffset);
            this.setStartBefore(firstNodeInserted);
        },

        cloneContents: function() {
            assertRangeValid(this);

            var clone, frag;
            if (this.collapsed) {
                return getRangeDocument(this).createDocumentFragment();
            } else {
                if (this.startContainer === this.endContainer && dom.isCharacterDataNode(this.startContainer)) {
                    clone = this.startContainer.cloneNode(true);
                    clone.data = clone.data.slice(this.startOffset, this.endOffset);
                    frag = getRangeDocument(this).createDocumentFragment();
                    frag.appendChild(clone);
                    return frag;
                } else {
                    var iterator = new RangeIterator(this, true);
                    clone = cloneSubtree(iterator);
                    iterator.detach();
                }
                return clone;
            }
        },

        canSurroundContents: function() {
            assertRangeValid(this);
            assertNodeNotReadOnly(this.startContainer);
            assertNodeNotReadOnly(this.endContainer);

            // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
            // no non-text nodes.
            var iterator = new RangeIterator(this, true);
            var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
                    (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
            iterator.detach();
            return !boundariesInvalid;
        },

        surroundContents: function(node) {
            assertValidNodeType(node, surroundNodeTypes);

            if (!this.canSurroundContents()) {
                throw new RangeException("BAD_BOUNDARYPOINTS_ERR");
            }

            // Extract the contents
            var content = this.extractContents();

            // Clear the children of the node
            if (node.hasChildNodes()) {
                while (node.lastChild) {
                    node.removeChild(node.lastChild);
                }
            }

            // Insert the new node and add the extracted contents
            insertNodeAtPosition(node, this.startContainer, this.startOffset);
            node.appendChild(content);

            this.selectNode(node);
        },

        cloneRange: function() {
            assertRangeValid(this);
            var range = new Range(getRangeDocument(this));
            var i = rangeProperties.length, prop;
            while (i--) {
                prop = rangeProperties[i];
                range[prop] = this[prop];
            }
            return range;
        },

        toString: function() {
            assertRangeValid(this);
            var sc = this.startContainer;
            if (sc === this.endContainer && dom.isCharacterDataNode(sc)) {
                return (sc.nodeType == 3 || sc.nodeType == 4) ? sc.data.slice(this.startOffset, this.endOffset) : "";
            } else {
                var textBits = [], iterator = new RangeIterator(this, true);

                iterateSubtree(iterator, function(node) {
                    // Accept only text or CDATA nodes, not comments

                    if (node.nodeType == 3 || node.nodeType == 4) {
                        textBits.push(node.data);
                    }
                });
                iterator.detach();
                return textBits.join("");
            }
        },

        // The methods below are all non-standard. The following batch were introduced by Mozilla but have since
        // been removed from Mozilla.

        compareNode: function(node) {
            assertRangeValid(this);

            var parent = node.parentNode;
            var nodeIndex = dom.getNodeIndex(node);

            if (!parent) {
                throw new DOMException("NOT_FOUND_ERR");
            }

            var startComparison = this.comparePoint(parent, nodeIndex),
                endComparison = this.comparePoint(parent, nodeIndex + 1);

            if (startComparison < 0) { // Node starts before
                return (endComparison > 0) ? n_b_a : n_b;
            } else {
                return (endComparison > 0) ? n_a : n_i;
            }
        },

        comparePoint: function(node, offset) {
            assertRangeValid(this);
            assertNode(node, "HIERARCHY_REQUEST_ERR");
            assertSameDocumentOrFragment(node, this.startContainer);

            if (dom.comparePoints(node, offset, this.startContainer, this.startOffset) < 0) {
                return -1;
            } else if (dom.comparePoints(node, offset, this.endContainer, this.endOffset) > 0) {
                return 1;
            }
            return 0;
        },

        createContextualFragment: createContextualFragment,

        toHtml: function() {
            assertRangeValid(this);
            var container = getRangeDocument(this).createElement("div");
            container.appendChild(this.cloneContents());
            return container.innerHTML;
        },

        // touchingIsIntersecting determines whether this method considers a node that borders a range intersects
        // with it (as in WebKit) or not (as in Gecko pre-1.9, and the default)
        intersectsNode: function(node, touchingIsIntersecting) {
            assertRangeValid(this);
            assertNode(node, "NOT_FOUND_ERR");
            if (dom.getDocument(node) !== getRangeDocument(this)) {
                return false;
            }

            var parent = node.parentNode, offset = dom.getNodeIndex(node);
            assertNode(parent, "NOT_FOUND_ERR");

            var startComparison = dom.comparePoints(parent, offset, this.endContainer, this.endOffset),
                endComparison = dom.comparePoints(parent, offset + 1, this.startContainer, this.startOffset);

            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
        },


        isPointInRange: function(node, offset) {
            assertRangeValid(this);
            assertNode(node, "HIERARCHY_REQUEST_ERR");
            assertSameDocumentOrFragment(node, this.startContainer);

            return (dom.comparePoints(node, offset, this.startContainer, this.startOffset) >= 0) &&
                   (dom.comparePoints(node, offset, this.endContainer, this.endOffset) <= 0);
        },

        // The methods below are non-standard and invented by me.

        // Sharing a boundary start-to-end or end-to-start does not count as intersection.
        intersectsRange: function(range, touchingIsIntersecting) {
            assertRangeValid(this);

            if (getRangeDocument(range) != getRangeDocument(this)) {
                throw new DOMException("WRONG_DOCUMENT_ERR");
            }

            var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.endContainer, range.endOffset),
                endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.startContainer, range.startOffset);

            return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
        },

        intersection: function(range) {
            if (this.intersectsRange(range)) {
                var startComparison = dom.comparePoints(this.startContainer, this.startOffset, range.startContainer, range.startOffset),
                    endComparison = dom.comparePoints(this.endContainer, this.endOffset, range.endContainer, range.endOffset);

                var intersectionRange = this.cloneRange();

                if (startComparison == -1) {
                    intersectionRange.setStart(range.startContainer, range.startOffset);
                }
                if (endComparison == 1) {
                    intersectionRange.setEnd(range.endContainer, range.endOffset);
                }
                return intersectionRange;
            }
            return null;
        },

        union: function(range) {
            if (this.intersectsRange(range, true)) {
                var unionRange = this.cloneRange();
                if (dom.comparePoints(range.startContainer, range.startOffset, this.startContainer, this.startOffset) == -1) {
                    unionRange.setStart(range.startContainer, range.startOffset);
                }
                if (dom.comparePoints(range.endContainer, range.endOffset, this.endContainer, this.endOffset) == 1) {
                    unionRange.setEnd(range.endContainer, range.endOffset);
                }
                return unionRange;
            } else {
                throw new RangeException("Ranges do not intersect");
            }
        },

        containsNode: function(node, allowPartial) {
            if (allowPartial) {
                return this.intersectsNode(node, false);
            } else {
                return this.compareNode(node) == n_i;
            }
        },

        containsNodeContents: function(node) {
            return this.comparePoint(node, 0) >= 0 && this.comparePoint(node, dom.getNodeLength(node)) <= 0;
        },

        containsRange: function(range) {
            return this.intersection(range).equals(range);
        },

        containsNodeText: function(node) {
            var nodeRange = this.cloneRange();
            nodeRange.selectNode(node);
            var textNodes = nodeRange.getNodes([3]);
            if (textNodes.length > 0) {
                nodeRange.setStart(textNodes[0], 0);
                var lastTextNode = textNodes.pop();
                nodeRange.setEnd(lastTextNode, lastTextNode.length);
                var contains = this.containsRange(nodeRange);
                nodeRange.detach();
                return contains;
            } else {
                return this.containsNodeContents(node);
            }
        },

        createNodeIterator: function(nodeTypes, filter) {
            assertRangeValid(this);
            return new RangeNodeIterator(this, nodeTypes, filter);
        },

        getNodes: function(nodeTypes, filter) {
            assertRangeValid(this);
            return getNodesInRange(this, nodeTypes, filter);
        },

        getDocument: function() {
            return getRangeDocument(this);
        },

        collapseBefore: function(node) {
            assertNotDetached(this);

            this.setEndBefore(node);
            this.collapse(false);
        },

        collapseAfter: function(node) {
            assertNotDetached(this);

            this.setStartAfter(node);
            this.collapse(true);
        },

        getName: function() {
            return "DomRange";
        },

        equals: function(range) {
            return Range.rangesEqual(this, range);
        },

        inspect: function() {
            return inspect(this);
        }
    };

    function copyComparisonConstantsToObject(obj) {
        obj.START_TO_START = s2s;
        obj.START_TO_END = s2e;
        obj.END_TO_END = e2e;
        obj.END_TO_START = e2s;

        obj.NODE_BEFORE = n_b;
        obj.NODE_AFTER = n_a;
        obj.NODE_BEFORE_AND_AFTER = n_b_a;
        obj.NODE_INSIDE = n_i;
    }

    function copyComparisonConstants(constructor) {
        copyComparisonConstantsToObject(constructor);
        copyComparisonConstantsToObject(constructor.prototype);
    }

    function createRangeContentRemover(remover, boundaryUpdater) {
        return function() {
            assertRangeValid(this);

            var sc = this.startContainer, so = this.startOffset, root = this.commonAncestorContainer;

            var iterator = new RangeIterator(this, true);

            // Work out where to position the range after content removal
            var node, boundary;
            if (sc !== root) {
                node = dom.getClosestAncestorIn(sc, root, true);
                boundary = getBoundaryAfterNode(node);
                sc = boundary.node;
                so = boundary.offset;
            }

            // Check none of the range is read-only
            iterateSubtree(iterator, assertNodeNotReadOnly);

            iterator.reset();

            // Remove the content
            var returnValue = remover(iterator);
            iterator.detach();

            // Move to the new position
            boundaryUpdater(this, sc, so, sc, so);

            return returnValue;
        };
    }

    function createPrototypeRange(constructor, boundaryUpdater, detacher) {
        function createBeforeAfterNodeSetter(isBefore, isStart) {
            return function(node) {
                assertNotDetached(this);
                assertValidNodeType(node, beforeAfterNodeTypes);
                assertValidNodeType(getRootContainer(node), rootContainerNodeTypes);

                var boundary = (isBefore ? getBoundaryBeforeNode : getBoundaryAfterNode)(node);
                (isStart ? setRangeStart : setRangeEnd)(this, boundary.node, boundary.offset);
            };
        }

        function setRangeStart(range, node, offset) {
            var ec = range.endContainer, eo = range.endOffset;
            if (node !== range.startContainer || offset !== range.startOffset) {
                // Check the root containers of the range and the new boundary, and also check whether the new boundary
                // is after the current end. In either case, collapse the range to the new position
                if (getRootContainer(node) != getRootContainer(ec) || dom.comparePoints(node, offset, ec, eo) == 1) {
                    ec = node;
                    eo = offset;
                }
                boundaryUpdater(range, node, offset, ec, eo);
            }
        }

        function setRangeEnd(range, node, offset) {
            var sc = range.startContainer, so = range.startOffset;
            if (node !== range.endContainer || offset !== range.endOffset) {
                // Check the root containers of the range and the new boundary, and also check whether the new boundary
                // is after the current end. In either case, collapse the range to the new position
                if (getRootContainer(node) != getRootContainer(sc) || dom.comparePoints(node, offset, sc, so) == -1) {
                    sc = node;
                    so = offset;
                }
                boundaryUpdater(range, sc, so, node, offset);
            }
        }

        function setRangeStartAndEnd(range, node, offset) {
            if (node !== range.startContainer || offset !== range.startOffset || node !== range.endContainer || offset !== range.endOffset) {
                boundaryUpdater(range, node, offset, node, offset);
            }
        }

        constructor.prototype = new RangePrototype();

        api.util.extend(constructor.prototype, {
            setStart: function(node, offset) {
                assertNotDetached(this);
                assertNoDocTypeNotationEntityAncestor(node, true);
                assertValidOffset(node, offset);

                setRangeStart(this, node, offset);
            },

            setEnd: function(node, offset) {
                assertNotDetached(this);
                assertNoDocTypeNotationEntityAncestor(node, true);
                assertValidOffset(node, offset);

                setRangeEnd(this, node, offset);
            },

            setStartBefore: createBeforeAfterNodeSetter(true, true),
            setStartAfter: createBeforeAfterNodeSetter(false, true),
            setEndBefore: createBeforeAfterNodeSetter(true, false),
            setEndAfter: createBeforeAfterNodeSetter(false, false),

            collapse: function(isStart) {
                assertRangeValid(this);
                if (isStart) {
                    boundaryUpdater(this, this.startContainer, this.startOffset, this.startContainer, this.startOffset);
                } else {
                    boundaryUpdater(this, this.endContainer, this.endOffset, this.endContainer, this.endOffset);
                }
            },

            selectNodeContents: function(node) {
                // This doesn't seem well specified: the spec talks only about selecting the node's contents, which
                // could be taken to mean only its children. However, browsers implement this the same as selectNode for
                // text nodes, so I shall do likewise
                assertNotDetached(this);
                assertNoDocTypeNotationEntityAncestor(node, true);

                boundaryUpdater(this, node, 0, node, dom.getNodeLength(node));
            },

            selectNode: function(node) {
                assertNotDetached(this);
                assertNoDocTypeNotationEntityAncestor(node, false);
                assertValidNodeType(node, beforeAfterNodeTypes);

                var start = getBoundaryBeforeNode(node), end = getBoundaryAfterNode(node);
                boundaryUpdater(this, start.node, start.offset, end.node, end.offset);
            },

            extractContents: createRangeContentRemover(extractSubtree, boundaryUpdater),

            deleteContents: createRangeContentRemover(deleteSubtree, boundaryUpdater),

            canSurroundContents: function() {
                assertRangeValid(this);
                assertNodeNotReadOnly(this.startContainer);
                assertNodeNotReadOnly(this.endContainer);

                // Check if the contents can be surrounded. Specifically, this means whether the range partially selects
                // no non-text nodes.
                var iterator = new RangeIterator(this, true);
                var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
                        (iterator._last && isNonTextPartiallySelected(iterator._last, this)));
                iterator.detach();
                return !boundariesInvalid;
            },

            detach: function() {
                detacher(this);
            },

            splitBoundaries: function() {
                assertRangeValid(this);


                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;
                var startEndSame = (sc === ec);

                if (dom.isCharacterDataNode(ec) && eo > 0 && eo < ec.length) {
                    dom.splitDataNode(ec, eo);

                }

                if (dom.isCharacterDataNode(sc) && so > 0 && so < sc.length) {

                    sc = dom.splitDataNode(sc, so);
                    if (startEndSame) {
                        eo -= so;
                        ec = sc;
                    } else if (ec == sc.parentNode && eo >= dom.getNodeIndex(sc)) {
                        eo++;
                    }
                    so = 0;

                }
                boundaryUpdater(this, sc, so, ec, eo);
            },

            normalizeBoundaries: function() {
                assertRangeValid(this);

                var sc = this.startContainer, so = this.startOffset, ec = this.endContainer, eo = this.endOffset;

                var mergeForward = function(node) {
                    var sibling = node.nextSibling;
                    if (sibling && sibling.nodeType == node.nodeType) {
                        ec = node;
                        eo = node.length;
                        node.appendData(sibling.data);
                        sibling.parentNode.removeChild(sibling);
                    }
                };

                var mergeBackward = function(node) {
                    var sibling = node.previousSibling;
                    if (sibling && sibling.nodeType == node.nodeType) {
                        sc = node;
                        var nodeLength = node.length;
                        so = sibling.length;
                        node.insertData(0, sibling.data);
                        sibling.parentNode.removeChild(sibling);
                        if (sc == ec) {
                            eo += so;
                            ec = sc;
                        } else if (ec == node.parentNode) {
                            var nodeIndex = dom.getNodeIndex(node);
                            if (eo == nodeIndex) {
                                ec = node;
                                eo = nodeLength;
                            } else if (eo > nodeIndex) {
                                eo--;
                            }
                        }
                    }
                };

                var normalizeStart = true;

                if (dom.isCharacterDataNode(ec)) {
                    if (ec.length == eo) {
                        mergeForward(ec);
                    }
                } else {
                    if (eo > 0) {
                        var endNode = ec.childNodes[eo - 1];
                        if (endNode && dom.isCharacterDataNode(endNode)) {
                            mergeForward(endNode);
                        }
                    }
                    normalizeStart = !this.collapsed;
                }

                if (normalizeStart) {
                    if (dom.isCharacterDataNode(sc)) {
                        if (so == 0) {
                            mergeBackward(sc);
                        }
                    } else {
                        if (so < sc.childNodes.length) {
                            var startNode = sc.childNodes[so];
                            if (startNode && dom.isCharacterDataNode(startNode)) {
                                mergeBackward(startNode);
                            }
                        }
                    }
                } else {
                    sc = ec;
                    so = eo;
                }

                boundaryUpdater(this, sc, so, ec, eo);
            },

            collapseToPoint: function(node, offset) {
                assertNotDetached(this);

                assertNoDocTypeNotationEntityAncestor(node, true);
                assertValidOffset(node, offset);

                setRangeStartAndEnd(this, node, offset);
            }
        });

        copyComparisonConstants(constructor);
    }

    /*----------------------------------------------------------------------------------------------------------------*/

    // Updates commonAncestorContainer and collapsed after boundary change
    function updateCollapsedAndCommonAncestor(range) {
        range.collapsed = (range.startContainer === range.endContainer && range.startOffset === range.endOffset);
        range.commonAncestorContainer = range.collapsed ?
            range.startContainer : dom.getCommonAncestor(range.startContainer, range.endContainer);
    }

    function updateBoundaries(range, startContainer, startOffset, endContainer, endOffset) {
        var startMoved = (range.startContainer !== startContainer || range.startOffset !== startOffset);
        var endMoved = (range.endContainer !== endContainer || range.endOffset !== endOffset);

        range.startContainer = startContainer;
        range.startOffset = startOffset;
        range.endContainer = endContainer;
        range.endOffset = endOffset;

        updateCollapsedAndCommonAncestor(range);
        dispatchEvent(range, "boundarychange", {startMoved: startMoved, endMoved: endMoved});
    }

    function detach(range) {
        assertNotDetached(range);
        range.startContainer = range.startOffset = range.endContainer = range.endOffset = null;
        range.collapsed = range.commonAncestorContainer = null;
        dispatchEvent(range, "detach", null);
        range._listeners = null;
    }

    /**
     * @constructor
     */
    function Range(doc) {
        this.startContainer = doc;
        this.startOffset = 0;
        this.endContainer = doc;
        this.endOffset = 0;
        this._listeners = {
            boundarychange: [],
            detach: []
        };
        updateCollapsedAndCommonAncestor(this);
    }

    createPrototypeRange(Range, updateBoundaries, detach);

    api.rangePrototype = RangePrototype.prototype;

    Range.rangeProperties = rangeProperties;
    Range.RangeIterator = RangeIterator;
    Range.copyComparisonConstants = copyComparisonConstants;
    Range.createPrototypeRange = createPrototypeRange;
    Range.inspect = inspect;
    Range.getRangeDocument = getRangeDocument;
    Range.rangesEqual = function(r1, r2) {
        return r1.startContainer === r2.startContainer &&
               r1.startOffset === r2.startOffset &&
               r1.endContainer === r2.endContainer &&
               r1.endOffset === r2.endOffset;
    };

    api.DomRange = Range;
    api.RangeException = RangeException;
});rangy.createModule("WrappedRange", function(api, module) {
    api.requireModules( ["DomUtil", "DomRange"] );

    /**
     * @constructor
     */
    var WrappedRange;
    var dom = api.dom;
    var DomPosition = dom.DomPosition;
    var DomRange = api.DomRange;



    /*----------------------------------------------------------------------------------------------------------------*/

    /*
    This is a workaround for a bug where IE returns the wrong container element from the TextRange's parentElement()
    method. For example, in the following (where pipes denote the selection boundaries):

    <ul id="ul"><li id="a">| a </li><li id="b"> b |</li></ul>

    var range = document.selection.createRange();
    alert(range.parentElement().id); // Should alert "ul" but alerts "b"

    This method returns the common ancestor node of the following:
    - the parentElement() of the textRange
    - the parentElement() of the textRange after calling collapse(true)
    - the parentElement() of the textRange after calling collapse(false)
     */
    function getTextRangeContainerElement(textRange) {
        var parentEl = textRange.parentElement();

        var range = textRange.duplicate();
        range.collapse(true);
        var startEl = range.parentElement();
        range = textRange.duplicate();
        range.collapse(false);
        var endEl = range.parentElement();
        var startEndContainer = (startEl == endEl) ? startEl : dom.getCommonAncestor(startEl, endEl);

        return startEndContainer == parentEl ? startEndContainer : dom.getCommonAncestor(parentEl, startEndContainer);
    }

    function textRangeIsCollapsed(textRange) {
        return textRange.compareEndPoints("StartToEnd", textRange) == 0;
    }

    // Gets the boundary of a TextRange expressed as a node and an offset within that node. This function started out as
    // an improved version of code found in Tim Cameron Ryan's IERange (http://code.google.com/p/ierange/) but has
    // grown, fixing problems with line breaks in preformatted text, adding workaround for IE TextRange bugs, handling
    // for inputs and images, plus optimizations.
    function getTextRangeBoundaryPosition(textRange, wholeRangeContainerElement, isStart, isCollapsed) {
        var workingRange = textRange.duplicate();

        workingRange.collapse(isStart);
        var containerElement = workingRange.parentElement();

        // Sometimes collapsing a TextRange that's at the start of a text node can move it into the previous node, so
        // check for that
        // TODO: Find out when. Workaround for wholeRangeContainerElement may break this
        if (!dom.isAncestorOf(wholeRangeContainerElement, containerElement, true)) {
            containerElement = wholeRangeContainerElement;

        }



        // Deal with nodes that cannot "contain rich HTML markup". In practice, this means form inputs, images and
        // similar. See http://msdn.microsoft.com/en-us/library/aa703950%28VS.85%29.aspx
        if (!containerElement.canHaveHTML) {
            return new DomPosition(containerElement.parentNode, dom.getNodeIndex(containerElement));
        }

        var workingNode = dom.getDocument(containerElement).createElement("span");
        var comparison, workingComparisonType = isStart ? "StartToStart" : "StartToEnd";
        var previousNode, nextNode, boundaryPosition, boundaryNode;

        // Move the working range through the container's children, starting at the end and working backwards, until the
        // working range reaches or goes past the boundary we're interested in
        do {
            containerElement.insertBefore(workingNode, workingNode.previousSibling);
            workingRange.moveToElementText(workingNode);
        } while ( (comparison = workingRange.compareEndPoints(workingComparisonType, textRange)) > 0 &&
                workingNode.previousSibling);

        // We've now reached or gone past the boundary of the text range we're interested in
        // so have identified the node we want
        boundaryNode = workingNode.nextSibling;

        if (comparison == -1 && boundaryNode && dom.isCharacterDataNode(boundaryNode)) {
            // This is a character data node (text, comment, cdata). The working range is collapsed at the start of the
            // node containing the text range's boundary, so we move the end of the working range to the boundary point
            // and measure the length of its text to get the boundary's offset within the node.
            workingRange.setEndPoint(isStart ? "EndToStart" : "EndToEnd", textRange);


            var offset;

            if (/[\r\n]/.test(boundaryNode.data)) {
                /*
                For the particular case of a boundary within a text node containing line breaks (within a <pre> element,
                for example), we need a slightly complicated approach to get the boundary's offset in IE. The facts:

                - Each line break is represented as \r in the text node's data/nodeValue properties
                - Each line break is represented as \r\n in the TextRange's 'text' property
                - The 'text' property of the TextRange does not contain trailing line breaks

                To get round the problem presented by the final fact above, we can use the fact that TextRange's
                moveStart() and moveEnd() methods return the actual number of characters moved, which is not necessarily
                the same as the number of characters it was instructed to move. The simplest approach is to use this to
                store the characters moved when moving both the start and end of the range to the start of the document
                body and subtracting the start offset from the end offset (the "move-negative-gazillion" method).
                However, this is extremely slow when the document is large and the range is near the end of it. Clearly
                doing the mirror image (i.e. moving the range boundaries to the end of the document) has the same
                problem.

                Another approach that works is to use moveStart() to move the start boundary of the range up to the end
                boundary one character at a time and incrementing a counter with the value returned by the moveStart()
                call. However, the check for whether the start boundary has reached the end boundary is expensive, so
                this method is slow (although unlike "move-negative-gazillion" is largely unaffected by the location of
                the range within the document).

                The method below is a hybrid of the two methods above. It uses the fact that a string containing the
                TextRange's 'text' property with each \r\n converted to a single \r character cannot be longer than the
                text of the TextRange, so the start of the range is moved that length initially and then a character at
                a time to make up for any trailing line breaks not contained in the 'text' property. This has good
                performance in most situations compared to the previous two methods.
                */
                var tempRange = workingRange.duplicate();
                var rangeLength = tempRange.text.replace(/\r\n/g, "\r").length;

                offset = tempRange.moveStart("character", rangeLength);
                while ( (comparison = tempRange.compareEndPoints("StartToEnd", tempRange)) == -1) {
                    offset++;
                    tempRange.moveStart("character", 1);
                }
            } else {
                offset = workingRange.text.length;
            }
            boundaryPosition = new DomPosition(boundaryNode, offset);
        } else {


            // If the boundary immediately follows a character data node and this is the end boundary, we should favour
            // a position within that, and likewise for a start boundary preceding a character data node
            previousNode = (isCollapsed || !isStart) && workingNode.previousSibling;
            nextNode = (isCollapsed || isStart) && workingNode.nextSibling;



            if (nextNode && dom.isCharacterDataNode(nextNode)) {
                boundaryPosition = new DomPosition(nextNode, 0);
            } else if (previousNode && dom.isCharacterDataNode(previousNode)) {
                boundaryPosition = new DomPosition(previousNode, previousNode.length);
            } else {
                boundaryPosition = new DomPosition(containerElement, dom.getNodeIndex(workingNode));
            }
        }

        // Clean up
        workingNode.parentNode.removeChild(workingNode);

        return boundaryPosition;
    }

    // Returns a TextRange representing the boundary of a TextRange expressed as a node and an offset within that node.
    // This function started out as an optimized version of code found in Tim Cameron Ryan's IERange
    // (http://code.google.com/p/ierange/)
    function createBoundaryTextRange(boundaryPosition, isStart) {
        var boundaryNode, boundaryParent, boundaryOffset = boundaryPosition.offset;
        var doc = dom.getDocument(boundaryPosition.node);
        var workingNode, childNodes, workingRange = doc.body.createTextRange();
        var nodeIsDataNode = dom.isCharacterDataNode(boundaryPosition.node);

        if (nodeIsDataNode) {
            boundaryNode = boundaryPosition.node;
            boundaryParent = boundaryNode.parentNode;
        } else {
            childNodes = boundaryPosition.node.childNodes;
            boundaryNode = (boundaryOffset < childNodes.length) ? childNodes[boundaryOffset] : null;
            boundaryParent = boundaryPosition.node;
        }

        // Position the range immediately before the node containing the boundary
        workingNode = doc.createElement("span");

        // Making the working element non-empty element persuades IE to consider the TextRange boundary to be within the
        // element rather than immediately before or after it, which is what we want
        workingNode.innerHTML = "&#feff;";

        // insertBefore is supposed to work like appendChild if the second parameter is null. However, a bug report
        // for IERange suggests that it can crash the browser: http://code.google.com/p/ierange/issues/detail?id=12
        if (boundaryNode) {
            boundaryParent.insertBefore(workingNode, boundaryNode);
        } else {
            boundaryParent.appendChild(workingNode);
        }

        workingRange.moveToElementText(workingNode);
        workingRange.collapse(!isStart);

        // Clean up
        boundaryParent.removeChild(workingNode);

        // Move the working range to the text offset, if required
        if (nodeIsDataNode) {
            workingRange[isStart ? "moveStart" : "moveEnd"]("character", boundaryOffset);
        }

        return workingRange;
    }

    /*----------------------------------------------------------------------------------------------------------------*/

    if (api.features.implementsDomRange && (!api.features.implementsTextRange || !api.config.preferTextRange)) {
        // This is a wrapper around the browser's native DOM Range. It has two aims:
        // - Provide workarounds for specific browser bugs
        // - provide convenient extensions, which are inherited from Rangy's DomRange

        (function() {
            var rangeProto;
            var rangeProperties = DomRange.rangeProperties;
            var canSetRangeStartAfterEnd;

            function updateRangeProperties(range) {
                var i = rangeProperties.length, prop;
                while (i--) {
                    prop = rangeProperties[i];
                    range[prop] = range.nativeRange[prop];
                }
            }

            function updateNativeRange(range, startContainer, startOffset, endContainer,endOffset) {
                var startMoved = (range.startContainer !== startContainer || range.startOffset != startOffset);
                var endMoved = (range.endContainer !== endContainer || range.endOffset != endOffset);

                // Always set both boundaries for the benefit of IE9 (see issue 35)
                if (startMoved || endMoved) {
                    range.setEnd(endContainer, endOffset);
                    range.setStart(startContainer, startOffset);
                }
            }

            function detach(range) {
                range.nativeRange.detach();
                range.detached = true;
                var i = rangeProperties.length, prop;
                while (i--) {
                    prop = rangeProperties[i];
                    range[prop] = null;
                }
            }

            var createBeforeAfterNodeSetter;

            WrappedRange = function(range) {
                if (!range) {
                    throw new Error("Range must be specified");
                }
                this.nativeRange = range;
                updateRangeProperties(this);
            };

            DomRange.createPrototypeRange(WrappedRange, updateNativeRange, detach);

            rangeProto = WrappedRange.prototype;

            rangeProto.selectNode = function(node) {
                this.nativeRange.selectNode(node);
                updateRangeProperties(this);
            };

            rangeProto.deleteContents = function() {
                this.nativeRange.deleteContents();
                updateRangeProperties(this);
            };

            rangeProto.extractContents = function() {
                var frag = this.nativeRange.extractContents();
                updateRangeProperties(this);
                return frag;
            };

            rangeProto.cloneContents = function() {
                return this.nativeRange.cloneContents();
            };

            // TODO: Until I can find a way to programmatically trigger the Firefox bug (apparently long-standing, still
            // present in 3.6.8) that throws "Index or size is negative or greater than the allowed amount" for
            // insertNode in some circumstances, all browsers will have to use the Rangy's own implementation of
            // insertNode, which works but is almost certainly slower than the native implementation.
/*
            rangeProto.insertNode = function(node) {
                this.nativeRange.insertNode(node);
                updateRangeProperties(this);
            };
*/

            rangeProto.surroundContents = function(node) {
                this.nativeRange.surroundContents(node);
                updateRangeProperties(this);
            };

            rangeProto.collapse = function(isStart) {
                this.nativeRange.collapse(isStart);
                updateRangeProperties(this);
            };

            rangeProto.cloneRange = function() {
                return new WrappedRange(this.nativeRange.cloneRange());
            };

            rangeProto.refresh = function() {
                updateRangeProperties(this);
            };

            rangeProto.toString = function() {
                return this.nativeRange.toString();
            };

            // Create test range and node for feature detection

            var testTextNode = document.createTextNode("test");
            dom.getBody(document).appendChild(testTextNode);
            var range = document.createRange();

            /*--------------------------------------------------------------------------------------------------------*/

            // Test for Firefox 2 bug that prevents moving the start of a Range to a point after its current end and
            // correct for it

            range.setStart(testTextNode, 0);
            range.setEnd(testTextNode, 0);

            try {
                range.setStart(testTextNode, 1);
                canSetRangeStartAfterEnd = true;

                rangeProto.setStart = function(node, offset) {
                    this.nativeRange.setStart(node, offset);
                    updateRangeProperties(this);
                };

                rangeProto.setEnd = function(node, offset) {
                    this.nativeRange.setEnd(node, offset);
                    updateRangeProperties(this);
                };

                createBeforeAfterNodeSetter = function(name) {
                    return function(node) {
                        this.nativeRange[name](node);
                        updateRangeProperties(this);
                    };
                };

            } catch(ex) {


                canSetRangeStartAfterEnd = false;

                rangeProto.setStart = function(node, offset) {
                    try {
                        this.nativeRange.setStart(node, offset);
                    } catch (ex) {
                        this.nativeRange.setEnd(node, offset);
                        this.nativeRange.setStart(node, offset);
                    }
                    updateRangeProperties(this);
                };

                rangeProto.setEnd = function(node, offset) {
                    try {
                        this.nativeRange.setEnd(node, offset);
                    } catch (ex) {
                        this.nativeRange.setStart(node, offset);
                        this.nativeRange.setEnd(node, offset);
                    }
                    updateRangeProperties(this);
                };

                createBeforeAfterNodeSetter = function(name, oppositeName) {
                    return function(node) {
                        try {
                            this.nativeRange[name](node);
                        } catch (ex) {
                            this.nativeRange[oppositeName](node);
                            this.nativeRange[name](node);
                        }
                        updateRangeProperties(this);
                    };
                };
            }

            rangeProto.setStartBefore = createBeforeAfterNodeSetter("setStartBefore", "setEndBefore");
            rangeProto.setStartAfter = createBeforeAfterNodeSetter("setStartAfter", "setEndAfter");
            rangeProto.setEndBefore = createBeforeAfterNodeSetter("setEndBefore", "setStartBefore");
            rangeProto.setEndAfter = createBeforeAfterNodeSetter("setEndAfter", "setStartAfter");

            /*--------------------------------------------------------------------------------------------------------*/

            // Test for and correct Firefox 2 behaviour with selectNodeContents on text nodes: it collapses the range to
            // the 0th character of the text node
            range.selectNodeContents(testTextNode);
            if (range.startContainer == testTextNode && range.endContainer == testTextNode &&
                    range.startOffset == 0 && range.endOffset == testTextNode.length) {
                rangeProto.selectNodeContents = function(node) {
                    this.nativeRange.selectNodeContents(node);
                    updateRangeProperties(this);
                };
            } else {
                rangeProto.selectNodeContents = function(node) {
                    this.setStart(node, 0);
                    this.setEnd(node, DomRange.getEndOffset(node));
                };
            }

            /*--------------------------------------------------------------------------------------------------------*/

            // Test for WebKit bug that has the beahviour of compareBoundaryPoints round the wrong way for constants
            // START_TO_END and END_TO_START: https://bugs.webkit.org/show_bug.cgi?id=20738

            range.selectNodeContents(testTextNode);
            range.setEnd(testTextNode, 3);

            var range2 = document.createRange();
            range2.selectNodeContents(testTextNode);
            range2.setEnd(testTextNode, 4);
            range2.setStart(testTextNode, 2);

            if (range.compareBoundaryPoints(range.START_TO_END, range2) == -1 &
                    range.compareBoundaryPoints(range.END_TO_START, range2) == 1) {
                // This is the wrong way round, so correct for it


                rangeProto.compareBoundaryPoints = function(type, range) {
                    range = range.nativeRange || range;
                    if (type == range.START_TO_END) {
                        type = range.END_TO_START;
                    } else if (type == range.END_TO_START) {
                        type = range.START_TO_END;
                    }
                    return this.nativeRange.compareBoundaryPoints(type, range);
                };
            } else {
                rangeProto.compareBoundaryPoints = function(type, range) {
                    return this.nativeRange.compareBoundaryPoints(type, range.nativeRange || range);
                };
            }

            /*--------------------------------------------------------------------------------------------------------*/

            // Test for existence of createContextualFragment and delegate to it if it exists
            if (api.util.isHostMethod(range, "createContextualFragment")) {
                rangeProto.createContextualFragment = function(fragmentStr) {
                    return this.nativeRange.createContextualFragment(fragmentStr);
                };
            }

            /*--------------------------------------------------------------------------------------------------------*/

            // Clean up
            dom.getBody(document).removeChild(testTextNode);
            range.detach();
            range2.detach();
        })();

        api.createNativeRange = function(doc) {
            doc = doc || document;
            return doc.createRange();
        };
    } else if (api.features.implementsTextRange) {
        // This is a wrapper around a TextRange, providing full DOM Range functionality using rangy's DomRange as a
        // prototype

        WrappedRange = function(textRange) {
            this.textRange = textRange;
            this.refresh();
        };

        WrappedRange.prototype = new DomRange(document);

        WrappedRange.prototype.refresh = function() {
            var start, end;

            // TextRange's parentElement() method cannot be trusted. getTextRangeContainerElement() works around that.
            var rangeContainerElement = getTextRangeContainerElement(this.textRange);

            if (textRangeIsCollapsed(this.textRange)) {
                end = start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, true);
            } else {

                start = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, false);
                end = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, false, false);
            }

            this.setStart(start.node, start.offset);
            this.setEnd(end.node, end.offset);
        };

        DomRange.copyComparisonConstants(WrappedRange);

        // Add WrappedRange as the Range property of the global object to allow expression like Range.END_TO_END to work
        var globalObj = (function() { return this; })();
        if (typeof globalObj.Range == "undefined") {
            globalObj.Range = WrappedRange;
        }

        api.createNativeRange = function(doc) {
            doc = doc || document;
            return doc.body.createTextRange();
        };
    }

    if (api.features.implementsTextRange) {
        WrappedRange.rangeToTextRange = function(range) {
            if (range.collapsed) {
                var tr = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);



                return tr;

                //return createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
            } else {
                var startRange = createBoundaryTextRange(new DomPosition(range.startContainer, range.startOffset), true);
                var endRange = createBoundaryTextRange(new DomPosition(range.endContainer, range.endOffset), false);
                var textRange = dom.getDocument(range.startContainer).body.createTextRange();
                textRange.setEndPoint("StartToStart", startRange);
                textRange.setEndPoint("EndToEnd", endRange);
                return textRange;
            }
        };
    }

    WrappedRange.prototype.getName = function() {
        return "WrappedRange";
    };

    api.WrappedRange = WrappedRange;

    api.createRange = function(doc) {
        doc = doc || document;
        return new WrappedRange(api.createNativeRange(doc));
    };

    api.createRangyRange = function(doc) {
        doc = doc || document;
        return new DomRange(doc);
    };

    api.createIframeRange = function(iframeEl) {
        return api.createRange(dom.getIframeDocument(iframeEl));
    };

    api.createIframeRangyRange = function(iframeEl) {
        return api.createRangyRange(dom.getIframeDocument(iframeEl));
    };

    api.addCreateMissingNativeApiListener(function(win) {
        var doc = win.document;
        if (typeof doc.createRange == "undefined") {
            doc.createRange = function() {
                return api.createRange(this);
            };
        }
        doc = win = null;
    });
});rangy.createModule("WrappedSelection", function(api, module) {
    // This will create a selection object wrapper that follows the Selection object found in the WHATWG draft DOM Range
    // spec (http://html5.org/specs/dom-range.html)

    api.requireModules( ["DomUtil", "DomRange", "WrappedRange"] );

    api.config.checkSelectionRanges = true;

    var BOOLEAN = "boolean",
        windowPropertyName = "_rangySelection",
        dom = api.dom,
        util = api.util,
        DomRange = api.DomRange,
        WrappedRange = api.WrappedRange,
        DOMException = api.DOMException,
        DomPosition = dom.DomPosition,
        getSelection,
        selectionIsCollapsed,
        CONTROL = "Control";



    function getWinSelection(winParam) {
        return (winParam || window).getSelection();
    }

    function getDocSelection(winParam) {
        return (winParam || window).document.selection;
    }

    // Test for the Range/TextRange and Selection features required
    // Test for ability to retrieve selection
    var implementsWinGetSelection = api.util.isHostMethod(window, "getSelection"),
        implementsDocSelection = api.util.isHostObject(document, "selection");

    var useDocumentSelection = implementsDocSelection && (!implementsWinGetSelection || api.config.preferTextRange);

    if (useDocumentSelection) {
        getSelection = getDocSelection;
        api.isSelectionValid = function(winParam) {
            var doc = (winParam || window).document, nativeSel = doc.selection;

            // Check whether the selection TextRange is actually contained within the correct document
            return (nativeSel.type != "None" || dom.getDocument(nativeSel.createRange().parentElement()) == doc);
        };
    } else if (implementsWinGetSelection) {
        getSelection = getWinSelection;
        api.isSelectionValid = function() {
            return true;
        };
    } else {
        module.fail("Neither document.selection or window.getSelection() detected.");
    }

    api.getNativeSelection = getSelection;

    var testSelection = getSelection();
    var testRange = api.createNativeRange(document);
    var body = dom.getBody(document);

    // Obtaining a range from a selection
    var selectionHasAnchorAndFocus = util.areHostObjects(testSelection, ["anchorNode", "focusNode"] &&
                                     util.areHostProperties(testSelection, ["anchorOffset", "focusOffset"]));
    api.features.selectionHasAnchorAndFocus = selectionHasAnchorAndFocus;

    // Test for existence of native selection extend() method
    var selectionHasExtend = util.isHostMethod(testSelection, "extend");
    api.features.selectionHasExtend = selectionHasExtend;

    // Test if rangeCount exists
    var selectionHasRangeCount = (typeof testSelection.rangeCount == "number");
    api.features.selectionHasRangeCount = selectionHasRangeCount;

    var selectionSupportsMultipleRanges = false;
    var collapsedNonEditableSelectionsSupported = true;

    if (util.areHostMethods(testSelection, ["addRange", "getRangeAt", "removeAllRanges"]) &&
            typeof testSelection.rangeCount == "number" && api.features.implementsDomRange) {

        (function() {
            var iframe = document.createElement("iframe");
            body.appendChild(iframe);

            var iframeDoc = dom.getIframeDocument(iframe);
            iframeDoc.open();
            iframeDoc.write("<html><head></head><body>12</body></html>");
            iframeDoc.close();

            var sel = dom.getIframeWindow(iframe).getSelection();
            var docEl = iframeDoc.documentElement;
            var iframeBody = docEl.lastChild, textNode = iframeBody.firstChild;

            // Test whether the native selection will allow a collapsed selection within a non-editable element
            var r1 = iframeDoc.createRange();
            r1.setStart(textNode, 1);
            r1.collapse(true);
            sel.addRange(r1);
            collapsedNonEditableSelectionsSupported = (sel.rangeCount == 1);
            sel.removeAllRanges();

            // Test whether the native selection is capable of supporting multiple ranges
            var r2 = r1.cloneRange();
            r1.setStart(textNode, 0);
            r2.setEnd(textNode, 2);
            sel.addRange(r1);
            sel.addRange(r2);

            selectionSupportsMultipleRanges = (sel.rangeCount == 2);

            // Clean up
            r1.detach();
            r2.detach();

            body.removeChild(iframe);
        })();
    }

    api.features.selectionSupportsMultipleRanges = selectionSupportsMultipleRanges;
    api.features.collapsedNonEditableSelectionsSupported = collapsedNonEditableSelectionsSupported;

    // ControlRanges
    var implementsControlRange = false, testControlRange;

    if (body && util.isHostMethod(body, "createControlRange")) {
        testControlRange = body.createControlRange();
        if (util.areHostProperties(testControlRange, ["item", "add"])) {
            implementsControlRange = true;
        }
    }
    api.features.implementsControlRange = implementsControlRange;

    // Selection collapsedness
    if (selectionHasAnchorAndFocus) {
        selectionIsCollapsed = function(sel) {
            return sel.anchorNode === sel.focusNode && sel.anchorOffset === sel.focusOffset;
        };
    } else {
        selectionIsCollapsed = function(sel) {
            return sel.rangeCount ? sel.getRangeAt(sel.rangeCount - 1).collapsed : false;
        };
    }

    function updateAnchorAndFocusFromRange(sel, range, backwards) {
        var anchorPrefix = backwards ? "end" : "start", focusPrefix = backwards ? "start" : "end";
        sel.anchorNode = range[anchorPrefix + "Container"];
        sel.anchorOffset = range[anchorPrefix + "Offset"];
        sel.focusNode = range[focusPrefix + "Container"];
        sel.focusOffset = range[focusPrefix + "Offset"];
    }

    function updateAnchorAndFocusFromNativeSelection(sel) {
        var nativeSel = sel.nativeSelection;
        sel.anchorNode = nativeSel.anchorNode;
        sel.anchorOffset = nativeSel.anchorOffset;
        sel.focusNode = nativeSel.focusNode;
        sel.focusOffset = nativeSel.focusOffset;
    }

    function updateEmptySelection(sel) {
        sel.anchorNode = sel.focusNode = null;
        sel.anchorOffset = sel.focusOffset = 0;
        sel.rangeCount = 0;
        sel.isCollapsed = true;
        sel._ranges.length = 0;
    }

    function getNativeRange(range) {
        var nativeRange;
        if (range instanceof DomRange) {
            nativeRange = range._selectionNativeRange;
            if (!nativeRange) {
                nativeRange = api.createNativeRange(dom.getDocument(range.startContainer));
                nativeRange.setEnd(range.endContainer, range.endOffset);
                nativeRange.setStart(range.startContainer, range.startOffset);
                range._selectionNativeRange = nativeRange;
                range.attachListener("detach", function() {

                    this._selectionNativeRange = null;
                });
            }
        } else if (range instanceof WrappedRange) {
            nativeRange = range.nativeRange;
        } else if (api.features.implementsDomRange && (range instanceof dom.getWindow(range.startContainer).Range)) {
            nativeRange = range;
        }
        return nativeRange;
    }

    function rangeContainsSingleElement(rangeNodes) {
        if (!rangeNodes.length || rangeNodes[0].nodeType != 1) {
            return false;
        }
        for (var i = 1, len = rangeNodes.length; i < len; ++i) {
            if (!dom.isAncestorOf(rangeNodes[0], rangeNodes[i])) {
                return false;
            }
        }
        return true;
    }

    function getSingleElementFromRange(range) {
        var nodes = range.getNodes();
        if (!rangeContainsSingleElement(nodes)) {
            throw new Error("getSingleElementFromRange: range " + range.inspect() + " did not consist of a single element");
        }
        return nodes[0];
    }

    function isTextRange(range) {
        return !!range && typeof range.text != "undefined";
    }

    function updateFromTextRange(sel, range) {
        // Create a Range from the selected TextRange
        var wrappedRange = new WrappedRange(range);
        sel._ranges = [wrappedRange];

        updateAnchorAndFocusFromRange(sel, wrappedRange, false);
        sel.rangeCount = 1;
        sel.isCollapsed = wrappedRange.collapsed;
    }

    function updateControlSelection(sel) {
        // Update the wrapped selection based on what's now in the native selection
        sel._ranges.length = 0;
        if (sel.docSelection.type == "None") {
            updateEmptySelection(sel);
        } else {
            var controlRange = sel.docSelection.createRange();
            if (isTextRange(controlRange)) {
                // This case (where the selection type is "Control" and calling createRange() on the selection returns
                // a TextRange) can happen in IE 9. It happens, for example, when all elements in the selected
                // ControlRange have been removed from the ControlRange and removed from the document.
                updateFromTextRange(sel, controlRange);
            } else {
                sel.rangeCount = controlRange.length;
                var range, doc = dom.getDocument(controlRange.item(0));
                for (var i = 0; i < sel.rangeCount; ++i) {
                    range = api.createRange(doc);
                    range.selectNode(controlRange.item(i));
                    sel._ranges.push(range);
                }
                sel.isCollapsed = sel.rangeCount == 1 && sel._ranges[0].collapsed;
                updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], false);
            }
        }
    }

    function addRangeToControlSelection(sel, range) {
        var controlRange = sel.docSelection.createRange();
        var rangeElement = getSingleElementFromRange(range);

        // Create a new ControlRange containing all the elements in the selected ControlRange plus the element
        // contained by the supplied range
        var doc = dom.getDocument(controlRange.item(0));
        var newControlRange = dom.getBody(doc).createControlRange();
        for (var i = 0, len = controlRange.length; i < len; ++i) {
            newControlRange.add(controlRange.item(i));
        }
        try {
            newControlRange.add(rangeElement);
        } catch (ex) {
            throw new Error("addRange(): Element within the specified Range could not be added to control selection (does it have layout?)");
        }
        newControlRange.select();

        // Update the wrapped selection based on what's now in the native selection
        updateControlSelection(sel);
    }

    var getSelectionRangeAt;

    if (util.isHostMethod(testSelection,  "getRangeAt")) {
        getSelectionRangeAt = function(sel, index) {
            try {
                return sel.getRangeAt(index);
            } catch(ex) {
                return null;
            }
        };
    } else if (selectionHasAnchorAndFocus) {
        getSelectionRangeAt = function(sel) {
            var doc = dom.getDocument(sel.anchorNode);
            var range = api.createRange(doc);
            range.setStart(sel.anchorNode, sel.anchorOffset);
            range.setEnd(sel.focusNode, sel.focusOffset);

            // Handle the case when the selection was selected backwards (from the end to the start in the
            // document)
            if (range.collapsed !== this.isCollapsed) {
                range.setStart(sel.focusNode, sel.focusOffset);
                range.setEnd(sel.anchorNode, sel.anchorOffset);
            }

            return range;
        };
    }

    /**
     * @constructor
     */
    function WrappedSelection(selection, docSelection, win) {
        this.nativeSelection = selection;
        this.docSelection = docSelection;
        this._ranges = [];
        this.win = win;
        this.refresh();
    }

    api.getSelection = function(win) {
        win = win || window;
        var sel = win[windowPropertyName];
        var nativeSel = getSelection(win), docSel = implementsDocSelection ? getDocSelection(win) : null;
        if (sel) {
            sel.nativeSelection = nativeSel;
            sel.docSelection = docSel;
            sel.refresh(win);
        } else {
            sel = new WrappedSelection(nativeSel, docSel, win);
            win[windowPropertyName] = sel;
        }
        return sel;
    };

    api.getIframeSelection = function(iframeEl) {
        return api.getSelection(dom.getIframeWindow(iframeEl));
    };

    var selProto = WrappedSelection.prototype;

    function createControlSelection(sel, ranges) {
        // Ensure that the selection becomes of type "Control"
        var doc = dom.getDocument(ranges[0].startContainer);
        var controlRange = dom.getBody(doc).createControlRange();
        for (var i = 0, el; i < rangeCount; ++i) {
            el = getSingleElementFromRange(ranges[i]);
            try {
                controlRange.add(el);
            } catch (ex) {
                throw new Error("setRanges(): Element within the one of the specified Ranges could not be added to control selection (does it have layout?)");
            }
        }
        controlRange.select();

        // Update the wrapped selection based on what's now in the native selection
        updateControlSelection(sel);
    }

    // Selecting a range
    if (!useDocumentSelection && selectionHasAnchorAndFocus && util.areHostMethods(testSelection, ["removeAllRanges", "addRange"])) {
        selProto.removeAllRanges = function() {
            this.nativeSelection.removeAllRanges();
            updateEmptySelection(this);
        };

        var addRangeBackwards = function(sel, range) {
            var doc = DomRange.getRangeDocument(range);
            var endRange = api.createRange(doc);
            endRange.collapseToPoint(range.endContainer, range.endOffset);
            sel.nativeSelection.addRange(getNativeRange(endRange));
            sel.nativeSelection.extend(range.startContainer, range.startOffset);
            sel.refresh();
        };

        if (selectionHasRangeCount) {
            selProto.addRange = function(range, backwards) {
                if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
                    addRangeToControlSelection(this, range);
                } else {
                    if (backwards && selectionHasExtend) {
                        addRangeBackwards(this, range);
                    } else {
                        var previousRangeCount;
                        if (selectionSupportsMultipleRanges) {
                            previousRangeCount = this.rangeCount;
                        } else {
                            this.removeAllRanges();
                            previousRangeCount = 0;
                        }
                        this.nativeSelection.addRange(getNativeRange(range));

                        // Check whether adding the range was successful
                        this.rangeCount = this.nativeSelection.rangeCount;

                        if (this.rangeCount == previousRangeCount + 1) {
                            // The range was added successfully

                            // Check whether the range that we added to the selection is reflected in the last range extracted from
                            // the selection
                            if (api.config.checkSelectionRanges) {
                                var nativeRange = getSelectionRangeAt(this.nativeSelection, this.rangeCount - 1);
                                if (nativeRange && !DomRange.rangesEqual(nativeRange, range)) {
                                    // Happens in WebKit with, for example, a selection placed at the start of a text node
                                    range = new WrappedRange(nativeRange);
                                }
                            }
                            this._ranges[this.rangeCount - 1] = range;
                            updateAnchorAndFocusFromRange(this, range, selectionIsBackwards(this.nativeSelection));
                            this.isCollapsed = selectionIsCollapsed(this);
                        } else {
                            // The range was not added successfully. The simplest thing is to refresh
                            this.refresh();
                        }
                    }
                }
            };
        } else {
            selProto.addRange = function(range, backwards) {
                if (backwards && selectionHasExtend) {
                    addRangeBackwards(this, range);
                } else {
                    this.nativeSelection.addRange(getNativeRange(range));
                    this.refresh();
                }
            };
        }

        selProto.setRanges = function(ranges) {
            if (implementsControlRange && ranges.length > 1) {
                createControlSelection(this, ranges);
            } else {
                this.removeAllRanges();
                for (var i = 0, len = ranges.length; i < len; ++i) {
                    this.addRange(ranges[i]);
                }
            }
        };
    } else if (util.isHostMethod(testSelection, "empty") && util.isHostMethod(testRange, "select") &&
               implementsControlRange && useDocumentSelection) {

        selProto.removeAllRanges = function() {
            // Added try/catch as fix for issue #21
            try {
                this.docSelection.empty();

                // Check for empty() not working (issue #24)
                if (this.docSelection.type != "None") {
                    // Work around failure to empty a control selection by instead selecting a TextRange and then
                    // calling empty()
                    var doc;
                    if (this.anchorNode) {
                        doc = dom.getDocument(this.anchorNode);
                    } else if (this.docSelection.type == CONTROL) {
                        var controlRange = this.docSelection.createRange();
                        if (controlRange.length) {
                            doc = dom.getDocument(controlRange.item(0)).body.createTextRange();
                        }
                    }
                    if (doc) {
                        var textRange = doc.body.createTextRange();
                        textRange.select();
                        this.docSelection.empty();
                    }
                }
            } catch(ex) {}
            updateEmptySelection(this);
        };

        selProto.addRange = function(range) {
            if (this.docSelection.type == CONTROL) {
                addRangeToControlSelection(this, range);
            } else {
                WrappedRange.rangeToTextRange(range).select();
                this._ranges[0] = range;
                this.rangeCount = 1;
                this.isCollapsed = this._ranges[0].collapsed;
                updateAnchorAndFocusFromRange(this, range, false);
            }
        };

        selProto.setRanges = function(ranges) {
            this.removeAllRanges();
            var rangeCount = ranges.length;
            if (rangeCount > 1) {
                createControlSelection(this, ranges);
            } else if (rangeCount) {
                this.addRange(ranges[0]);
            }
        };
    } else {
        module.fail("No means of selecting a Range or TextRange was found");
        return false;
    }

    selProto.getRangeAt = function(index) {
        if (index < 0 || index >= this.rangeCount) {
            throw new DOMException("INDEX_SIZE_ERR");
        } else {
            return this._ranges[index];
        }
    };

    var refreshSelection;

    if (useDocumentSelection) {
        refreshSelection = function(sel) {
            var range;
            if (api.isSelectionValid(sel.win)) {
                range = sel.docSelection.createRange();
            } else {
                range = dom.getBody(sel.win.document).createTextRange();
                range.collapse(true);
            }


            if (sel.docSelection.type == CONTROL) {
                updateControlSelection(sel);
            } else if (isTextRange(range)) {
                updateFromTextRange(sel, range);
            } else {
                updateEmptySelection(sel);
            }
        };
    } else if (util.isHostMethod(testSelection, "getRangeAt") && typeof testSelection.rangeCount == "number") {
        refreshSelection = function(sel) {
            if (implementsControlRange && implementsDocSelection && sel.docSelection.type == CONTROL) {
                updateControlSelection(sel);
            } else {
                sel._ranges.length = sel.rangeCount = sel.nativeSelection.rangeCount;
                if (sel.rangeCount) {
                    for (var i = 0, len = sel.rangeCount; i < len; ++i) {
                        sel._ranges[i] = new api.WrappedRange(sel.nativeSelection.getRangeAt(i));
                    }
                    updateAnchorAndFocusFromRange(sel, sel._ranges[sel.rangeCount - 1], selectionIsBackwards(sel.nativeSelection));
                    sel.isCollapsed = selectionIsCollapsed(sel);
                } else {
                    updateEmptySelection(sel);
                }
            }
        };
    } else if (selectionHasAnchorAndFocus && typeof testSelection.isCollapsed == BOOLEAN && typeof testRange.collapsed == BOOLEAN && api.features.implementsDomRange) {
        refreshSelection = function(sel) {
            var range, nativeSel = sel.nativeSelection;
            if (nativeSel.anchorNode) {
                range = getSelectionRangeAt(nativeSel, 0);
                sel._ranges = [range];
                sel.rangeCount = 1;
                updateAnchorAndFocusFromNativeSelection(sel);
                sel.isCollapsed = selectionIsCollapsed(sel);
            } else {
                updateEmptySelection(sel);
            }
        };
    } else {
        module.fail("No means of obtaining a Range or TextRange from the user's selection was found");
        return false;
    }

    selProto.refresh = function(checkForChanges) {
        var oldRanges = checkForChanges ? this._ranges.slice(0) : null;
        refreshSelection(this);
        if (checkForChanges) {
            var i = oldRanges.length;
            if (i != this._ranges.length) {
                return false;
            }
            while (i--) {
                if (!DomRange.rangesEqual(oldRanges[i], this._ranges[i])) {
                    return false;
                }
            }
            return true;
        }
    };

    // Removal of a single range
    var removeRangeManually = function(sel, range) {
        var ranges = sel.getAllRanges(), removed = false;
        sel.removeAllRanges();
        for (var i = 0, len = ranges.length; i < len; ++i) {
            if (removed || range !== ranges[i]) {
                sel.addRange(ranges[i]);
            } else {
                // According to the draft WHATWG Range spec, the same range may be added to the selection multiple
                // times. removeRange should only remove the first instance, so the following ensures only the first
                // instance is removed
                removed = true;
            }
        }
        if (!sel.rangeCount) {
            updateEmptySelection(sel);
        }
    };

    if (implementsControlRange) {
        selProto.removeRange = function(range) {
            if (this.docSelection.type == CONTROL) {
                var controlRange = this.docSelection.createRange();
                var rangeElement = getSingleElementFromRange(range);

                // Create a new ControlRange containing all the elements in the selected ControlRange minus the
                // element contained by the supplied range
                var doc = dom.getDocument(controlRange.item(0));
                var newControlRange = dom.getBody(doc).createControlRange();
                var el, removed = false;
                for (var i = 0, len = controlRange.length; i < len; ++i) {
                    el = controlRange.item(i);
                    if (el !== rangeElement || removed) {
                        newControlRange.add(controlRange.item(i));
                    } else {
                        removed = true;
                    }
                }
                newControlRange.select();

                // Update the wrapped selection based on what's now in the native selection
                updateControlSelection(this);
            } else {
                removeRangeManually(this, range);
            }
        };
    } else {
        selProto.removeRange = function(range) {
            removeRangeManually(this, range);
        };
    }

    // Detecting if a selection is backwards
    var selectionIsBackwards;
    if (!useDocumentSelection && selectionHasAnchorAndFocus && api.features.implementsDomRange) {
        selectionIsBackwards = function(sel) {
            var backwards = false;
            if (sel.anchorNode) {
                backwards = (dom.comparePoints(sel.anchorNode, sel.anchorOffset, sel.focusNode, sel.focusOffset) == 1);
            }
            return backwards;
        };

        selProto.isBackwards = function() {
            return selectionIsBackwards(this);
        };
    } else {
        selectionIsBackwards = selProto.isBackwards = function() {
            return false;
        };
    }

    // Selection text
    // This is conformant to the new WHATWG DOM Range draft spec but differs from WebKit and Mozilla's implementation
    selProto.toString = function() {

        var rangeTexts = [];
        for (var i = 0, len = this.rangeCount; i < len; ++i) {
            rangeTexts[i] = "" + this._ranges[i];
        }
        return rangeTexts.join("");
    };

    function assertNodeInSameDocument(sel, node) {
        if (sel.anchorNode && (dom.getDocument(sel.anchorNode) !== dom.getDocument(node))) {
            throw new DOMException("WRONG_DOCUMENT_ERR");
        }
    }

    // No current browsers conform fully to the HTML 5 draft spec for this method, so Rangy's own method is always used
    selProto.collapse = function(node, offset) {
        assertNodeInSameDocument(this, node);
        var range = api.createRange(dom.getDocument(node));
        range.collapseToPoint(node, offset);
        this.removeAllRanges();
        this.addRange(range);
        this.isCollapsed = true;
    };

    selProto.collapseToStart = function() {
        if (this.rangeCount) {
            var range = this._ranges[0];
            this.collapse(range.startContainer, range.startOffset);
        } else {
            throw new DOMException("INVALID_STATE_ERR");
        }
    };

    selProto.collapseToEnd = function() {
        if (this.rangeCount) {
            var range = this._ranges[this.rangeCount - 1];
            this.collapse(range.endContainer, range.endOffset);
        } else {
            throw new DOMException("INVALID_STATE_ERR");
        }
    };

    // The HTML 5 spec is very specific on how selectAllChildren should be implemented so the native implementation is
    // never used by Rangy.
    selProto.selectAllChildren = function(node) {
        assertNodeInSameDocument(this, node);
        var range = api.createRange(dom.getDocument(node));
        range.selectNodeContents(node);
        this.removeAllRanges();
        this.addRange(range);
    };

    selProto.deleteFromDocument = function() {
        // Sepcial behaviour required for Control selections
        if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
            var controlRange = this.docSelection.createRange();
            var element;
            while (controlRange.length) {
                element = controlRange.item(0);
                controlRange.remove(element);
                element.parentNode.removeChild(element);
            }
            this.refresh();
        } else if (this.rangeCount) {
            var ranges = this.getAllRanges();
            this.removeAllRanges();
            for (var i = 0, len = ranges.length; i < len; ++i) {
                ranges[i].deleteContents();
            }
            // The HTML5 spec says nothing about what the selection should contain after calling deleteContents on each
            // range. Firefox moves the selection to where the final selected range was, so we emulate that
            this.addRange(ranges[len - 1]);
        }
    };

    // The following are non-standard extensions
    selProto.getAllRanges = function() {
        return this._ranges.slice(0);
    };

    selProto.setSingleRange = function(range) {
        this.setRanges( [range] );
    };

    selProto.containsNode = function(node, allowPartial) {
        for (var i = 0, len = this._ranges.length; i < len; ++i) {
            if (this._ranges[i].containsNode(node, allowPartial)) {
                return true;
            }
        }
        return false;
    };

    selProto.toHtml = function() {
        var html = "";
        if (this.rangeCount) {
            var container = DomRange.getRangeDocument(this._ranges[0]).createElement("div");
            for (var i = 0, len = this._ranges.length; i < len; ++i) {
                container.appendChild(this._ranges[i].cloneContents());
            }
            html = container.innerHTML;
        }
        return html;
    };

    function inspect(sel) {
        var rangeInspects = [];
        var anchor = new DomPosition(sel.anchorNode, sel.anchorOffset);
        var focus = new DomPosition(sel.focusNode, sel.focusOffset);
        var name = (typeof sel.getName == "function") ? sel.getName() : "Selection";

        if (typeof sel.rangeCount != "undefined") {
            for (var i = 0, len = sel.rangeCount; i < len; ++i) {
                rangeInspects[i] = DomRange.inspect(sel.getRangeAt(i));
            }
        }
        return "[" + name + "(Ranges: " + rangeInspects.join(", ") +
                ")(anchor: " + anchor.inspect() + ", focus: " + focus.inspect() + "]";

    }

    selProto.getName = function() {
        return "WrappedSelection";
    };

    selProto.inspect = function() {
        return inspect(this);
    };

    selProto.detach = function() {
        this.win[windowPropertyName] = null;
        this.win = this.anchorNode = this.focusNode = null;
    };

    WrappedSelection.inspect = inspect;

    api.Selection = WrappedSelection;

    api.selectionPrototype = selProto;

    api.addCreateMissingNativeApiListener(function(win) {
        if (typeof win.getSelection == "undefined") {
            win.getSelection = function() {
                return api.getSelection(this);
            };
        }
        win = null;
    });
});
/*
	Base.js, version 1.1a
	Copyright 2006-2010, Dean Edwards
	License: http://www.opensource.org/licenses/mit-license.php
*/

var Base = function() {
	// dummy
};

Base.extend = function(_instance, _static) { // subclass
	var extend = Base.prototype.extend;
	
	// build the prototype
	Base._prototyping = true;
	var proto = new this;
	extend.call(proto, _instance);
  proto.base = function() {
    // call this method from any other method to invoke that method's ancestor
  };
	delete Base._prototyping;
	
	// create the wrapper for the constructor function
	//var constructor = proto.constructor.valueOf(); //-dean
	var constructor = proto.constructor;
	var klass = proto.constructor = function() {
		if (!Base._prototyping) {
			if (this._constructing || this.constructor == klass) { // instantiation
				this._constructing = true;
				constructor.apply(this, arguments);
				delete this._constructing;
			} else if (arguments[0] != null) { // casting
				return (arguments[0].extend || extend).call(arguments[0], proto);
			}
		}
	};
	
	// build the class interface
	klass.ancestor = this;
	klass.extend = this.extend;
	klass.forEach = this.forEach;
	klass.implement = this.implement;
	klass.prototype = proto;
	klass.toString = this.toString;
	klass.valueOf = function(type) {
		//return (type == "object") ? klass : constructor; //-dean
		return (type == "object") ? klass : constructor.valueOf();
	};
	extend.call(klass, _static);
	// class initialisation
	if (typeof klass.init == "function") klass.init();
	return klass;
};

Base.prototype = {	
	extend: function(source, value) {
		if (arguments.length > 1) { // extending with a name/value pair
			var ancestor = this[source];
			if (ancestor && (typeof value == "function") && // overriding a method?
				// the valueOf() comparison is to avoid circular references
				(!ancestor.valueOf || ancestor.valueOf() != value.valueOf()) &&
				/\bbase\b/.test(value)) {
				// get the underlying method
				var method = value.valueOf();
				// override
				value = function() {
					var previous = this.base || Base.prototype.base;
					this.base = ancestor;
					var returnValue = method.apply(this, arguments);
					this.base = previous;
					return returnValue;
				};
				// point to the underlying method
				value.valueOf = function(type) {
					return (type == "object") ? value : method;
				};
				value.toString = Base.toString;
			}
			this[source] = value;
		} else if (source) { // extending with an object literal
			var extend = Base.prototype.extend;
			// if this object has a customised extend method then use it
			if (!Base._prototyping && typeof this != "function") {
				extend = this.extend || extend;
			}
			var proto = {toSource: null};
			// do the "toString" and other methods manually
			var hidden = ["constructor", "toString", "valueOf"];
			// if we are prototyping then include the constructor
			var i = Base._prototyping ? 0 : 1;
			while (key = hidden[i++]) {
				if (source[key] != proto[key]) {
					extend.call(this, key, source[key]);

				}
			}
			// copy each of the source object's properties to this object
			for (var key in source) {
				if (!proto[key]) extend.call(this, key, source[key]);
			}
		}
		return this;
	}
};

// initialise
Base = Base.extend({
	constructor: function() {
		this.extend(arguments[0]);
	}
}, {
	ancestor: Object,
	version: "1.1",
	
	forEach: function(object, block, context) {
		for (var key in object) {
			if (this.prototype[key] === undefined) {
				block.call(context, object[key], key, object);
			}
		}
	},
		
	implement: function() {
		for (var i = 0; i < arguments.length; i++) {
			if (typeof arguments[i] == "function") {
				// if it's a function, call it
				arguments[i](this.prototype);
			} else {
				// add the interface using the extend method
				this.prototype.extend(arguments[i]);
			}
		}
		return this;
	},
	
	toString: function() {
		return String(this.valueOf());
	}
});/**
 * Detect browser support for specific features
 */
wysihtml5.browser = (function() {
  var userAgent   = navigator.userAgent,
      testElement = document.createElement("div"),
      // Browser sniffing is unfortunately needed since some behaviors are impossible to feature detect
      isIE        = userAgent.indexOf("MSIE")         !== -1 && userAgent.indexOf("Opera") === -1,
      isGecko     = userAgent.indexOf("Gecko")        !== -1 && userAgent.indexOf("KHTML") === -1,
      isWebKit    = userAgent.indexOf("AppleWebKit/") !== -1,
      isChrome    = userAgent.indexOf("Chrome/")      !== -1,
      isOpera     = userAgent.indexOf("Opera/")       !== -1;
  
  function iosVersion(userAgent) {
    return ((/ipad|iphone|ipod/.test(userAgent) && userAgent.match(/ os (\d+).+? like mac os x/)) || [, 0])[1];
  }
  
  return {
    // Static variable needed, publicly accessible, to be able override it in unit tests
    USER_AGENT: userAgent,
    
    /**
     * Exclude browsers that are not capable of displaying and handling
     * contentEditable as desired:
     *    - iPhone, iPad (tested iOS 4.2.2) and Android (tested 2.2) refuse to make contentEditables focusable
     *    - IE < 8 create invalid markup and crash randomly from time to time
     *
     * @return {Boolean}
     */
    supported: function() {
      var userAgent                   = this.USER_AGENT.toLowerCase(),
          // Essential for making html elements editable
          hasContentEditableSupport   = "contentEditable" in testElement,
          // Following methods are needed in order to interact with the contentEditable area
          hasEditingApiSupport        = document.execCommand && document.queryCommandSupported && document.queryCommandState,
          // document selector apis are only supported by IE 8+, Safari 4+, Chrome and Firefox 3.5+
          hasQuerySelectorSupport     = document.querySelector && document.querySelectorAll,
          // contentEditable is unusable in mobile browsers (tested iOS 4.2.2, Android 2.2, Opera Mobile, WebOS 3.05)
          isIncompatibleMobileBrowser = (this.isIos() && iosVersion(userAgent) < 5) || userAgent.indexOf("opera mobi") !== -1 || userAgent.indexOf("hpwos/") !== -1;
      
      return hasContentEditableSupport
        && hasEditingApiSupport
        && hasQuerySelectorSupport
        && !isIncompatibleMobileBrowser;
    },
    
    isTouchDevice: function() {
      return this.supportsEvent("touchmove");
    },
    
    isIos: function() {
      var userAgent = this.USER_AGENT.toLowerCase();
      return userAgent.indexOf("webkit") !== -1 && userAgent.indexOf("mobile") !== -1;
    },
    
    /**
     * Whether the browser supports sandboxed iframes
     * Currently only IE 6+ offers such feature <iframe security="restricted">
     *
     * http://msdn.microsoft.com/en-us/library/ms534622(v=vs.85).aspx
     * http://blogs.msdn.com/b/ie/archive/2008/01/18/using-frames-more-securely.aspx
     *
     * HTML5 sandboxed iframes are still buggy and their DOM is not reachable from the outside (except when using postMessage)
     */
    supportsSandboxedIframes: function() {
      return isIE;
    },

    /**
     * IE6+7 throw a mixed content warning when the src of an iframe
     * is empty/unset or about:blank
     * window.querySelector is implemented as of IE8
     */
    throwsMixedContentWarningWhenIframeSrcIsEmpty: function() {
      return !("querySelector" in document);
    },

    /**
     * Whether the caret is correctly displayed in contentEditable elements
     * Firefox sometimes shows a huge caret in the beginning after focusing
     */
    displaysCaretInEmptyContentEditableCorrectly: function() {
      return !isGecko;
    },

    /**
     * Opera and IE are the only browsers who offer the css value
     * in the original unit, thx to the currentStyle object
     * All other browsers provide the computed style in px via window.getComputedStyle
     */
    hasCurrentStyleProperty: function() {
      return "currentStyle" in testElement;
    },

    /**
     * Whether the browser inserts a <br> when pressing enter in a contentEditable element
     */
    insertsLineBreaksOnReturn: function() {
      return isGecko;
    },

    supportsPlaceholderAttributeOn: function(element) {
      return "placeholder" in element;
    },

    supportsEvent: function(eventName) {
      return "on" + eventName in testElement || (function() {
        testElement.setAttribute("on" + eventName, "return;");
        return typeof(testElement["on" + eventName]) === "function";
      })();
    },

    /**
     * Opera doesn't correctly fire focus/blur events when clicking in- and outside of iframe
     */
    supportsEventsInIframeCorrectly: function() {
      return !isOpera;
    },

    /**
     * Chrome & Safari only fire the ondrop/ondragend/... events when the ondragover event is cancelled
     * with event.preventDefault
     * Firefox 3.6 fires those events anyway, but the mozilla doc says that the dragover/dragenter event needs
     * to be cancelled
     */
    firesOnDropOnlyWhenOnDragOverIsCancelled: function() {
      return isWebKit || isGecko;
    },
    
    /**
     * Whether the browser supports the event.dataTransfer property in a proper way
     */
    supportsDataTransfer: function() {
      try {
        // Firefox doesn't support dataTransfer in a safe way, it doesn't strip script code in the html payload (like Chrome does)
        return isWebKit && (window.Clipboard || window.DataTransfer).prototype.getData;
      } catch(e) {
        return false;
      }
    },

    /**
     * Everything below IE9 doesn't know how to treat HTML5 tags
     *
     * @param {Object} context The document object on which to check HTML5 support
     *
     * @example
     *    wysihtml5.browser.supportsHTML5Tags(document);
     */
    supportsHTML5Tags: function(context) {
      var element = context.createElement("div"),
          html5   = "<article>foo</article>";
      element.innerHTML = html5;
      return element.innerHTML.toLowerCase() === html5;
    },

    /**
     * Checks whether a document supports a certain queryCommand
     * In particular, Opera needs a reference to a document that has a contentEditable in it's dom tree
     * in oder to report correct results
     *
     * @param {Object} doc Document object on which to check for a query command
     * @param {String} command The query command to check for
     * @return {Boolean}
     *
     * @example
     *    wysihtml5.browser.supportsCommand(document, "bold");
     */
    supportsCommand: (function() {
      // Following commands are supported but contain bugs in some browsers
      var buggyCommands = {
        // formatBlock fails with some tags (eg. <blockquote>)
        "formatBlock":          isIE,
         // When inserting unordered or ordered lists in Firefox, Chrome or Safari, the current selection or line gets
         // converted into a list (<ul><li>...</li></ul>, <ol><li>...</li></ol>)
         // IE and Opera act a bit different here as they convert the entire content of the current block element into a list
        "insertUnorderedList":  isIE || isOpera,
        "insertOrderedList":    isIE || isOpera
      };
      
      // Firefox throws errors for queryCommandSupported, so we have to build up our own object of supported commands
      var supported = {
        "insertHTML": isGecko
      };

      return function(doc, command) {
        var isBuggy = buggyCommands[command];
        if (!isBuggy) {
          // Firefox throws errors when invoking queryCommandSupported or queryCommandEnabled
          try {
            return doc.queryCommandSupported(command);
          } catch(e1) {}

          try {
            return doc.queryCommandEnabled(command);
          } catch(e2) {
            return !!supported[command];
          }
        }
        return false;
      };
    })(),

    /**
     * IE: URLs starting with:
     *    www., http://, https://, ftp://, gopher://, mailto:, new:, snews:, telnet:, wasis:, file://,
     *    nntp://, newsrc:, ldap://, ldaps://, outlook:, mic:// and url:
     * will automatically be auto-linked when either the user inserts them via copy&paste or presses the
     * space bar when the caret is directly after such an url.
     * This behavior cannot easily be avoided in IE < 9 since the logic is hardcoded in the mshtml.dll
     * (related blog post on msdn
     * http://blogs.msdn.com/b/ieinternals/archive/2009/09/17/prevent-automatic-hyperlinking-in-contenteditable-html.aspx).
     */
    doesAutoLinkingInContentEditable: function() {
      return isIE;
    },

    /**
     * As stated above, IE auto links urls typed into contentEditable elements
     * Since IE9 it's possible to prevent this behavior
     */
    canDisableAutoLinking: function() {
      return this.supportsCommand(document, "AutoUrlDetect");
    },

    /**
     * IE leaves an empty paragraph in the contentEditable element after clearing it
     * Chrome/Safari sometimes an empty <div>
     */
    clearsContentEditableCorrectly: function() {
      return isGecko || isOpera || isWebKit;
    },

    /**
     * IE gives wrong results for getAttribute
     */
    supportsGetAttributeCorrectly: function() {
      var td = document.createElement("td");
      return td.getAttribute("rowspan") != "1";
    },

    /**
     * When clicking on images in IE, Opera and Firefox, they are selected, which makes it easy to interact with them.
     * Chrome and Safari both don't support this
     */
    canSelectImagesInContentEditable: function() {
      return isGecko || isIE || isOpera;
    },

    /**
     * When the caret is in an empty list (<ul><li>|</li></ul>) which is the first child in an contentEditable container
     * pressing backspace doesn't remove the entire list as done in other browsers
     */
    clearsListsInContentEditableCorrectly: function() {
      return isGecko || isIE || isWebKit;
    },

    /**
     * All browsers except Safari and Chrome automatically scroll the range/caret position into view
     */
    autoScrollsToCaret: function() {
      return !isWebKit;
    },

    /**
     * Check whether the browser automatically closes tags that don't need to be opened
     */
    autoClosesUnclosedTags: function() {
      var clonedTestElement = testElement.cloneNode(false),
          returnValue,
          innerHTML;

      clonedTestElement.innerHTML = "<p><div></div>";
      innerHTML                   = clonedTestElement.innerHTML.toLowerCase();
      returnValue                 = innerHTML === "<p></p><div></div>" || innerHTML === "<p><div></div></p>";

      // Cache result by overwriting current function
      this.autoClosesUnclosedTags = function() { return returnValue; };

      return returnValue;
    },

    /**
     * Whether the browser supports the native document.getElementsByClassName which returns live NodeLists
     */
    supportsNativeGetElementsByClassName: function() {
      return String(document.getElementsByClassName).indexOf("[native code]") !== -1;
    },

    /**
     * As of now (19.04.2011) only supported by Firefox 4 and Chrome
     * See https://developer.mozilla.org/en/DOM/Selection/modify
     */
    supportsSelectionModify: function() {
      return "getSelection" in window && "modify" in window.getSelection();
    },
    
    /**
     * Whether the browser supports the classList object for fast className manipulation
     * See https://developer.mozilla.org/en/DOM/element.classList
     */
    supportsClassList: function() {
      return "classList" in testElement;
    },
    
    /**
     * Opera needs a white space after a <br> in order to position the caret correctly
     */
    needsSpaceAfterLineBreak: function() {
      return isOpera;
    },
    
    /**
     * Whether the browser supports the speech api on the given element
     * See http://mikepultz.com/2011/03/accessing-google-speech-api-chrome-11/
     *
     * @example
     *    var input = document.createElement("input");
     *    if (wysihtml5.browser.supportsSpeechApiOn(input)) {
     *      // ...
     *    }
     */
    supportsSpeechApiOn: function(input) {
      var chromeVersion = userAgent.match(/Chrome\/(\d+)/) || [, 0];
      return chromeVersion[1] >= 11 && ("onwebkitspeechchange" in input || "speech" in input);
    },
    
    /**
     * IE9 crashes when setting a getter via Object.defineProperty on XMLHttpRequest or XDomainRequest
     * See https://connect.microsoft.com/ie/feedback/details/650112
     * or try the POC http://tifftiff.de/ie9_crash/
     */
    crashesWhenDefineProperty: function(property) {
      return isIE && (property === "XMLHttpRequest" || property === "XDomainRequest");
    },
    
    /**
     * IE is the only browser who fires the "focus" event not immediately when .focus() is called on an element
     */
    doesAsyncFocus: function() {
      return isIE;
    },
    
    /**
     * In IE it's impssible for the user and for the selection library to set the caret after an <img> when it's the lastChild in the document
     */
    hasProblemsSettingCaretAfterImg: function() {
      return isIE;
    },
    
    hasUndoInContextMenu: function() {
      return isGecko || isChrome || isOpera;
    }
  };
})();wysihtml5.lang.array = function(arr) {
  return {
    /**
     * Check whether a given object exists in an array
     *
     * @example
     *    wysihtml5.lang.array([1, 2]).contains(1);
     *    // => true
     */
    contains: function(needle) {
      if (arr.indexOf) {
        return arr.indexOf(needle) !== -1;
      } else {
        for (var i=0, length=arr.length; i<length; i++) {
          if (arr[i] === needle) { return true; }
        }
        return false;
      }
    },
    
    /**
     * Substract one array from another
     *
     * @example
     *    wysihtml5.lang.array([1, 2, 3, 4]).without([3, 4]);
     *    // => [1, 2]
     */
    without: function(arrayToSubstract) {
      arrayToSubstract = wysihtml5.lang.array(arrayToSubstract);
      var newArr  = [],
          i       = 0,
          length  = arr.length;
      for (; i<length; i++) {
        if (!arrayToSubstract.contains(arr[i])) {
          newArr.push(arr[i]);
        }
      }
      return newArr;
    },
    
    /**
     * Return a clean native array
     * 
     * Following will convert a Live NodeList to a proper Array
     * @example
     *    var childNodes = wysihtml5.lang.array(document.body.childNodes).get();
     */
    get: function() {
      var i        = 0,
          length   = arr.length,
          newArray = [];
      for (; i<length; i++) {
        newArray.push(arr[i]);
      }
      return newArray;
    }
  };
};wysihtml5.lang.Dispatcher = Base.extend(
  /** @scope wysihtml5.lang.Dialog.prototype */ {
  observe: function(eventName, handler) {
    this.events = this.events || {};
    this.events[eventName] = this.events[eventName] || [];
    this.events[eventName].push(handler);
    return this;
  },

  on: function() {
    return this.observe.apply(this, wysihtml5.lang.array(arguments).get());
  },

  fire: function(eventName, payload) {
    this.events = this.events || {};
    var handlers = this.events[eventName] || [],
        i        = 0;
    for (; i<handlers.length; i++) {
      handlers[i].call(this, payload);
    }
    return this;
  },

  stopObserving: function(eventName, handler) {
    this.events = this.events || {};
    var i = 0,
        handlers,
        newHandlers;
    if (eventName) {
      handlers    = this.events[eventName] || [],
      newHandlers = [];
      for (; i<handlers.length; i++) {
        if (handlers[i] !== handler && handler) {
          newHandlers.push(handlers[i]);
        }
      }
      this.events[eventName] = newHandlers;
    } else {
      // Clean up all events
      this.events = {};
    }
    return this;
  }
});wysihtml5.lang.object = function(obj) {
  return {
    /**
     * @example
     *    wysihtml5.lang.object({ foo: 1, bar: 1 }).merge({ bar: 2, baz: 3 }).get();
     *    // => { foo: 1, bar: 2, baz: 3 }
     */
    merge: function(otherObj) {
      for (var i in otherObj) {
        obj[i] = otherObj[i];
      }
      return this;
    },
    
    get: function() {
      return obj;
    },
    
    /**
     * @example
     *    wysihtml5.lang.object({ foo: 1 }).clone();
     *    // => { foo: 1 }
     */
    clone: function() {
      var newObj = {},
          i;
      for (i in obj) {
        newObj[i] = obj[i];
      }
      return newObj;
    },
    
    /**
     * @example
     *    wysihtml5.lang.object([]).isArray();
     *    // => true
     */
    isArray: function() {
      return Object.prototype.toString.call(obj) === "[object Array]";
    }
  };
};(function() {
  var WHITE_SPACE_START = /^\s+/,
      WHITE_SPACE_END   = /\s+$/;
  wysihtml5.lang.string = function(str) {
    str = String(str);
    return {
      /**
       * @example
       *    wysihtml5.lang.string("   foo   ").trim();
       *    // => "foo"
       */
      trim: function() {
        return str.replace(WHITE_SPACE_START, "").replace(WHITE_SPACE_END, "");
      },
      
      /**
       * @example
       *    wysihtml5.lang.string("Hello #{name}").interpolate({ name: "Christopher" });
       *    // => "Hello Christopher"
       */
      interpolate: function(vars) {
        for (var i in vars) {
          str = this.replace("#{" + i + "}").by(vars[i]);
        }
        return str;
      },
      
      /**
       * @example
       *    wysihtml5.lang.string("Hello Tom").replace("Tom").with("Hans");
       *    // => "Hello Hans"
       */
      replace: function(search) {
        return {
          by: function(replace) {
            return str.split(search).join(replace);
          }
        }
      }
    };
  };
})();/**
 * Find urls in descendant text nodes of an element and auto-links them
 * Inspired by http://james.padolsey.com/javascript/find-and-replace-text-with-javascript/
 *
 * @param {Element} element Container element in which to search for urls
 *
 * @example
 *    <div id="text-container">Please click here: www.google.com</div>
 *    <script>wysihtml5.dom.autoLink(document.getElementById("text-container"));</script>
 */
(function(wysihtml5) {
  var /**
       * Don't auto-link urls that are contained in the following elements:
       */
      IGNORE_URLS_IN        = wysihtml5.lang.array(["CODE", "PRE", "A", "SCRIPT", "HEAD", "TITLE", "STYLE"]),
      /**
       * revision 1:
       *    /(\S+\.{1}[^\s\,\.\!]+)/g
       *
       * revision 2:
       *    /(\b(((https?|ftp):\/\/)|(www\.))[-A-Z0-9+&@#\/%?=~_|!:,.;\[\]]*[-A-Z0-9+&@#\/%=~_|])/gim
       *
       * put this in the beginning if you don't wan't to match within a word
       *    (^|[\>\(\{\[\s\>])
       */
      URL_REG_EXP           = /((https?:\/\/|www\.)[^\s<]{3,})/gi,
      TRAILING_CHAR_REG_EXP = /([^\w\/\-](,?))$/i,
      MAX_DISPLAY_LENGTH    = 100,
      BRACKETS              = { ")": "(", "]": "[", "}": "{" };
  
  function autoLink(element) {
    if (_hasParentThatShouldBeIgnored(element)) {
      return element;
    }

    if (element === element.ownerDocument.documentElement) {
      element = element.ownerDocument.body;
    }

    return _parseNode(element);
  }
  
  /**
   * This is basically a rebuild of
   * the rails auto_link_urls text helper
   */
  function _convertUrlsToLinks(str) {
    return str.replace(URL_REG_EXP, function(match, url) {
      var punctuation = (url.match(TRAILING_CHAR_REG_EXP) || [])[1] || "",
          opening     = BRACKETS[punctuation];
      url = url.replace(TRAILING_CHAR_REG_EXP, "");

      if (url.split(opening).length > url.split(punctuation).length) {
        url = url + punctuation;
        punctuation = "";
      }
      var realUrl    = url,
          displayUrl = url;
      if (url.length > MAX_DISPLAY_LENGTH) {
        displayUrl = displayUrl.substr(0, MAX_DISPLAY_LENGTH) + "...";
      }
      // Add http prefix if necessary
      if (realUrl.substr(0, 4) === "www.") {
        realUrl = "http://" + realUrl;
      }
      
      return '<a href="' + realUrl + '">' + displayUrl + '</a>' + punctuation;
    });
  }
  
  /**
   * Creates or (if already cached) returns a temp element
   * for the given document object
   */
  function _getTempElement(context) {
    var tempElement = context._wysihtml5_tempElement;
    if (!tempElement) {
      tempElement = context._wysihtml5_tempElement = context.createElement("div");
    }
    return tempElement;
  }
  
  /**
   * Replaces the original text nodes with the newly auto-linked dom tree
   */
  function _wrapMatchesInNode(textNode) {
    var parentNode  = textNode.parentNode,
        tempElement = _getTempElement(parentNode.ownerDocument);
    
    // We need to insert an empty/temporary <span /> to fix IE quirks
    // Elsewise IE would strip white space in the beginning
    tempElement.innerHTML = "<span></span>" + _convertUrlsToLinks(textNode.data);
    tempElement.removeChild(tempElement.firstChild);
    
    while (tempElement.firstChild) {
      // inserts tempElement.firstChild before textNode
      parentNode.insertBefore(tempElement.firstChild, textNode);
    }
    parentNode.removeChild(textNode);
  }
  
  function _hasParentThatShouldBeIgnored(node) {
    var nodeName;
    while (node.parentNode) {
      node = node.parentNode;
      nodeName = node.nodeName;
      if (IGNORE_URLS_IN.contains(nodeName)) {
        return true;
      } else if (nodeName === "body") {
        return false;
      }
    }
    return false;
  }
  
  function _parseNode(element) {
    if (IGNORE_URLS_IN.contains(element.nodeName)) {
      return;
    }
    
    if (element.nodeType === wysihtml5.TEXT_NODE && element.data.match(URL_REG_EXP)) {
      _wrapMatchesInNode(element);
      return;
    }
    
    var childNodes        = wysihtml5.lang.array(element.childNodes).get(),
        childNodesLength  = childNodes.length,
        i                 = 0;
    
    for (; i<childNodesLength; i++) {
      _parseNode(childNodes[i]);
    }
    
    return element;
  }
  
  wysihtml5.dom.autoLink = autoLink;
  
  // Reveal url reg exp to the outside
  wysihtml5.dom.autoLink.URL_REG_EXP = URL_REG_EXP;
})(wysihtml5);(function(wysihtml5) {
  var supportsClassList = wysihtml5.browser.supportsClassList(),
      api               = wysihtml5.dom;
  
  api.addClass = function(element, className) {
    if (supportsClassList) {
      return element.classList.add(className);
    }
    if (api.hasClass(element, className)) {
      return;
    }
    element.className += " " + className;
  };
  
  api.removeClass = function(element, className) {
    if (supportsClassList) {
      return element.classList.remove(className);
    }
    
    element.className = element.className.replace(new RegExp("(^|\\s+)" + className + "(\\s+|$)"), " ");
  };
  
  api.hasClass = function(element, className) {
    if (supportsClassList) {
      return element.classList.contains(className);
    }
    
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className || new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  };
})(wysihtml5);
wysihtml5.dom.contains = (function() {
  var documentElement = document.documentElement;
  if (documentElement.contains) {
    return function(container, element) {
      if (element.nodeType !== wysihtml5.ELEMENT_NODE) {
        element = element.parentNode;
      }
      return container !== element && container.contains(element);
    };
  } else if (documentElement.compareDocumentPosition) {
    return function(container, element) {
      // https://developer.mozilla.org/en/DOM/Node.compareDocumentPosition
      return !!(container.compareDocumentPosition(element) & 16);
    };
  }
})();/**
 * Converts an HTML fragment/element into a unordered/ordered list
 *
 * @param {Element} element The element which should be turned into a list
 * @param {String} listType The list type in which to convert the tree (either "ul" or "ol")
 * @return {Element} The created list
 *
 * @example
 *    <!-- Assume the following dom: -->
 *    <span id="pseudo-list">
 *      eminem<br>
 *      dr. dre
 *      <div>50 Cent</div>
 *    </span>
 *
 *    <script>
 *      wysihtml5.dom.convertToList(document.getElementById("pseudo-list"), "ul");
 *    </script>
 *
 *    <!-- Will result in: -->
 *    <ul>
 *      <li>eminem</li>
 *      <li>dr. dre</li>
 *      <li>50 Cent</li>
 *    </ul>
 */
wysihtml5.dom.convertToList = (function() {
  function _createListItem(doc, list) {
    var listItem = doc.createElement("li");
    list.appendChild(listItem);
    return listItem;
  }
  
  function _createList(doc, type) {
    return doc.createElement(type);
  }
  
  function convertToList(element, listType) {
    if (element.nodeName === "UL" || element.nodeName === "OL" || element.nodeName === "MENU") {
      // Already a list
      return element;
    }
    
    var doc               = element.ownerDocument,
        list              = _createList(doc, listType),
        childNodes        = wysihtml5.lang.array(element.childNodes).get(),
        childNodesLength  = childNodes.length,
        childNode,
        isBlockElement,
        isLineBreak,
        currentListItem,
        i                 = 0;
    for (; i<childNodesLength; i++) {
      currentListItem = currentListItem || _createListItem(doc, list);
      childNode       = childNodes[i];
      isBlockElement  = wysihtml5.dom.getStyle("display").from(childNode) === "block";
      isLineBreak     = childNode.nodeName === "BR";
      
      if (isBlockElement) {
        // Append blockElement to current <li> if empty, otherwise create a new one
        currentListItem = currentListItem.firstChild ? _createListItem(doc, list) : currentListItem;
        currentListItem.appendChild(childNode);
        currentListItem = null;
        continue;
      }
      
      if (isLineBreak) {
        // Only create a new list item in the next iteration when the current one has already content
        currentListItem = currentListItem.firstChild ? null : currentListItem;
        continue;
      }
      
      currentListItem.appendChild(childNode);
    }
    
    element.parentNode.replaceChild(list, element);
    return list;
  }
  
  return convertToList;
})();/**
 * Copy a set of attributes from one element to another
 *
 * @param {Array} attributesToCopy List of attributes which should be copied
 * @return {Object} Returns an object which offers the "from" method which can be invoked with the element where to
 *    copy the attributes from., this again returns an object which provides a method named "to" which can be invoked 
 *    with the element where to copy the attributes to (see example)
 *
 * @example
 *    var textarea    = document.querySelector("textarea"),
 *        div         = document.querySelector("div[contenteditable=true]"),
 *        anotherDiv  = document.querySelector("div.preview");
 *    wysihtml5.dom.copyAttributes(["spellcheck", "value", "placeholder"]).from(textarea).to(div).andTo(anotherDiv);
 *
 */
wysihtml5.dom.copyAttributes = function(attributesToCopy) {
  return {
    from: function(elementToCopyFrom) {
      return {
        to: function(elementToCopyTo) {
          var attribute,
              i         = 0,
              length    = attributesToCopy.length;
          for (; i<length; i++) {
            attribute = attributesToCopy[i];
            if (elementToCopyFrom[attribute]) {
              elementToCopyTo[attribute] = elementToCopyFrom[attribute];
            }
          }
          return { andTo: arguments.callee };
        }
      };
    }
  };
};/**
 * Copy a set of styles from one element to another
 * Please note that this only works properly across browsers when the element from which to copy the styles
 * is in the dom
 *
 * Interesting article on how to copy styles
 *
 * @param {Array} stylesToCopy List of styles which should be copied
 * @return {Object} Returns an object which offers the "from" method which can be invoked with the element where to
 *    copy the styles from., this again returns an object which provides a method named "to" which can be invoked 
 *    with the element where to copy the styles to (see example)
 *
 * @example
 *    var textarea    = document.querySelector("textarea"),
 *        div         = document.querySelector("div[contenteditable=true]"),
 *        anotherDiv  = document.querySelector("div.preview");
 *    wysihtml5.dom.copyStyles(["overflow-y", "width", "height"]).from(textarea).to(div).andTo(anotherDiv);
 *
 */
(function(dom) {
  
  /**
   * Mozilla, WebKit and Opera recalculate the computed width when box-sizing: boder-box; is set
   * So if an element has "width: 200px; -moz-box-sizing: border-box; border: 1px;" then 
   * its computed css width will be 198px
   */
  var BOX_SIZING_PROPERTIES = ["-webkit-box-sizing", "-moz-box-sizing", "-ms-box-sizing", "box-sizing"];
  
  var shouldIgnoreBoxSizingBorderBox = function(element) {
    if (hasBoxSizingBorderBox(element)) {
       return parseInt(dom.getStyle("width").from(element), 10) < element.offsetWidth;
    }
    return false;
  };
  
  var hasBoxSizingBorderBox = function(element) {
    var i       = 0,
        length  = BOX_SIZING_PROPERTIES.length;
    for (; i<length; i++) {
      if (dom.getStyle(BOX_SIZING_PROPERTIES[i]).from(element) === "border-box") {
        return BOX_SIZING_PROPERTIES[i];
      }
    }
  };
  
  dom.copyStyles = function(stylesToCopy) {
    return {
      from: function(element) {
        if (shouldIgnoreBoxSizingBorderBox(element)) {
          stylesToCopy = wysihtml5.lang.array(stylesToCopy).without(BOX_SIZING_PROPERTIES);
        }
        
        var cssText = "",
            length  = stylesToCopy.length,
            i       = 0,
            property;
        for (; i<length; i++) {
          property = stylesToCopy[i];
          cssText += property + ":" + dom.getStyle(property).from(element) + ";";
        }
        
        return {
          to: function(element) {
            dom.setStyles(cssText).on(element);
            return { andTo: arguments.callee };
          }
        };
      }
    };
  };
})(wysihtml5.dom);/**
 * Event Delegation
 *
 * @example
 *    wysihtml5.dom.delegate(document.body, "a", "click", function() {
 *      // foo
 *    });
 */
(function(wysihtml5) {
  
  wysihtml5.dom.delegate = function(container, selector, eventName, handler) {
    return wysihtml5.dom.observe(container, eventName, function(event) {
      var target    = event.target,
          match     = wysihtml5.lang.array(container.querySelectorAll(selector));
      
      while (target && target !== container) {
        if (match.contains(target)) {
          handler.call(target, event);
          break;
        }
        target = target.parentNode;
      }
    });
  };
  
})(wysihtml5);/**
 * Returns the given html wrapped in a div element
 *
 * Fixing IE's inability to treat unknown elements (HTML5 section, article, ...) correctly
 * when inserted via innerHTML
 * 
 * @param {String} html The html which should be wrapped in a dom element
 * @param {Obejct} [context] Document object of the context the html belongs to
 *
 * @example
 *    wysihtml5.dom.getAsDom("<article>foo</article>");
 */
wysihtml5.dom.getAsDom = (function() {
  
  var _innerHTMLShiv = function(html, context) {
    var tempElement = context.createElement("div");
    tempElement.style.display = "none";
    context.body.appendChild(tempElement);
    // IE throws an exception when trying to insert <frameset></frameset> via innerHTML
    try { tempElement.innerHTML = html; } catch(e) {}
    context.body.removeChild(tempElement);
    return tempElement;
  };
  
  /**
   * Make sure IE supports HTML5 tags, which is accomplished by simply creating one instance of each element
   */
  var _ensureHTML5Compatibility = function(context) {
    if (context._wysihtml5_supportsHTML5Tags) {
      return;
    }
    for (var i=0, length=HTML5_ELEMENTS.length; i<length; i++) {
      context.createElement(HTML5_ELEMENTS[i]);
    }
    context._wysihtml5_supportsHTML5Tags = true;
  };
  
  
  /**
   * List of html5 tags
   * taken from http://simon.html5.org/html5-elements
   */
  var HTML5_ELEMENTS = [
    "abbr", "article", "aside", "audio", "bdi", "canvas", "command", "datalist", "details", "figcaption",
    "figure", "footer", "header", "hgroup", "keygen", "mark", "meter", "nav", "output", "progress",
    "rp", "rt", "ruby", "svg", "section", "source", "summary", "time", "track", "video", "wbr"
  ];
  
  return function(html, context) {
    context = context || document;
    var tempElement;
    if (typeof(html) === "object" && html.nodeType) {
      tempElement = context.createElement("div");
      tempElement.appendChild(html);
    } else if (wysihtml5.browser.supportsHTML5Tags(context)) {
      tempElement = context.createElement("div");
      tempElement.innerHTML = html;
    } else {
      _ensureHTML5Compatibility(context);
      tempElement = _innerHTMLShiv(html, context);
    }
    return tempElement;
  };
})();/**
 * Walks the dom tree from the given node up until it finds a match
 * Designed for optimal performance.
 *
 * @param {Element} node The from which to check the parent nodes
 * @param {Object} matchingSet Object to match against (possible properties: nodeName, className, classRegExp)
 * @param {Number} [levels] How many parents should the function check up from the current node (defaults to 50)
 * @return {null|Element} Returns the first element that matched the desiredNodeName(s)
 * @example
 *    var listElement = wysihtml5.dom.getParentElement(document.querySelector("li"), { nodeName: ["MENU", "UL", "OL"] });
 *    // ... or ...
 *    var unorderedListElement = wysihtml5.dom.getParentElement(document.querySelector("li"), { nodeName: "UL" });
 *    // ... or ...
 *    var coloredElement = wysihtml5.dom.getParentElement(myTextNode, { nodeName: "SPAN", className: "wysiwyg-color-red", classRegExp: /wysiwyg-color-[a-z]/g });
 */
wysihtml5.dom.getParentElement = (function() {
  
  function _isSameNodeName(nodeName, desiredNodeNames) {
    if (!desiredNodeNames || !desiredNodeNames.length) {
      return true;
    }
    
    if (typeof(desiredNodeNames) === "string") {
      return nodeName === desiredNodeNames;
    } else {
      return wysihtml5.lang.array(desiredNodeNames).contains(nodeName);
    }
  }
  
  function _isElement(node) {
    return node.nodeType === wysihtml5.ELEMENT_NODE;
  }
  
  function _hasClassName(element, className, classRegExp) {
    var classNames = (element.className || "").match(classRegExp) || [];
    if (!className) {
      return !!classNames.length;
    }
    return classNames[classNames.length - 1] === className;
  }
  
  function _getParentElementWithNodeName(node, nodeName, levels) {
    while (levels-- && node && node.nodeName !== "BODY") {
      if (_isSameNodeName(node.nodeName, nodeName)) {
        return node;
      }
      node = node.parentNode;
    }
    return null;
  }
  
  function _getParentElementWithNodeNameAndClassName(node, nodeName, className, classRegExp, levels) {
    while (levels-- && node && node.nodeName !== "BODY") {
      if (_isElement(node) &&
          _isSameNodeName(node.nodeName, nodeName) &&
          _hasClassName(node, className, classRegExp)) {
        return node;
      }
      node = node.parentNode;
    }
    return null;
  }
  
  return function(node, matchingSet, levels) {
    levels = levels || 50; // Go max 50 nodes upwards from current node
    if (matchingSet.className || matchingSet.classRegExp) {
      return _getParentElementWithNodeNameAndClassName(
        node, matchingSet.nodeName, matchingSet.className, matchingSet.classRegExp, levels
      );
    } else {
      return _getParentElementWithNodeName(
        node, matchingSet.nodeName, levels
      );
    }
  };
})();
/**
 * Get element's style for a specific css property
 *
 * @param {Element} element The element on which to retrieve the style
 * @param {String} property The CSS property to retrieve ("float", "display", "text-align", ...)
 *
 * @example
 *    wysihtml5.dom.getStyle("display").from(document.body);
 *    // => "block"
 */
wysihtml5.dom.getStyle = (function() {
  var stylePropertyMapping = {
        "float": ("styleFloat" in document.createElement("div").style) ? "styleFloat" : "cssFloat"
      },
      REG_EXP_CAMELIZE = /\-[a-z]/g;
  
  function camelize(str) {
    return str.replace(REG_EXP_CAMELIZE, function(match) {
      return match.charAt(1).toUpperCase();
    });
  }
  
  return function(property) {
    return {
      from: function(element) {
        if (element.nodeType !== wysihtml5.ELEMENT_NODE) {
          return;
        }
        
        var doc               = element.ownerDocument,
            camelizedProperty = stylePropertyMapping[property] || camelize(property),
            style             = element.style,
            currentStyle      = element.currentStyle,
            styleValue        = style[camelizedProperty];
        if (styleValue) {
          return styleValue;
        }
        
        // currentStyle is no standard and only supported by Opera and IE but it has one important advantage over the standard-compliant
        // window.getComputedStyle, since it returns css property values in their original unit:
        // If you set an elements width to "50%", window.getComputedStyle will give you it's current width in px while currentStyle
        // gives you the original "50%".
        // Opera supports both, currentStyle and window.getComputedStyle, that's why checking for currentStyle should have higher prio
        if (currentStyle) {
          try {
                return currentStyle[camelizedProperty];
          } catch(e) {
            //ie will occasionally fail for unknown reasons. swallowing exception
          }
        }

        var win                 = doc.defaultView || doc.parentWindow,
            needsOverflowReset  = (property === "height" || property === "width") && element.nodeName === "TEXTAREA",
            originalOverflow,
            returnValue;

        if (win.getComputedStyle) {
          // Chrome and Safari both calculate a wrong width and height for textareas when they have scroll bars
          // therfore we remove and restore the scrollbar and calculate the value in between
          if (needsOverflowReset) {
            originalOverflow = style.overflow;
            style.overflow = "hidden";
          }
          returnValue = win.getComputedStyle(element, null).getPropertyValue(property);
          if (needsOverflowReset) {
            style.overflow = originalOverflow || "";
          }
          return returnValue;
        }
      }
    };
  };
})();/**
 * High performant way to check whether an element with a specific tag name is in the given document
 * Optimized for being heavily executed
 * Unleashes the power of live node lists
 *
 * @param {Object} doc The document object of the context where to check
 * @param {String} tagName Upper cased tag name
 * @example
 *    wysihtml5.dom.hasElementWithTagName(document, "IMG");
 */
wysihtml5.dom.hasElementWithTagName = (function() {
  var LIVE_CACHE          = {},
      DOCUMENT_IDENTIFIER = 1;
  
  function _getDocumentIdentifier(doc) {
    return doc._wysihtml5_identifier || (doc._wysihtml5_identifier = DOCUMENT_IDENTIFIER++);
  }
  
  return function(doc, tagName) {
    var key         = _getDocumentIdentifier(doc) + ":" + tagName,
        cacheEntry  = LIVE_CACHE[key];
    if (!cacheEntry) {
      cacheEntry = LIVE_CACHE[key] = doc.getElementsByTagName(tagName);
    }
    
    return cacheEntry.length > 0;
  };
})();/**
 * High performant way to check whether an element with a specific class name is in the given document
 * Optimized for being heavily executed
 * Unleashes the power of live node lists
 *
 * @param {Object} doc The document object of the context where to check
 * @param {String} tagName Upper cased tag name
 * @example
 *    wysihtml5.dom.hasElementWithClassName(document, "foobar");
 */
(function(wysihtml5) {
  var LIVE_CACHE          = {},
      DOCUMENT_IDENTIFIER = 1;

  function _getDocumentIdentifier(doc) {
    return doc._wysihtml5_identifier || (doc._wysihtml5_identifier = DOCUMENT_IDENTIFIER++);
  }
  
  wysihtml5.dom.hasElementWithClassName = function(doc, className) {
    // getElementsByClassName is not supported by IE<9
    // but is sometimes mocked via library code (which then doesn't return live node lists)
    if (!wysihtml5.browser.supportsNativeGetElementsByClassName()) {
      return !!doc.querySelector("." + className);
    }

    var key         = _getDocumentIdentifier(doc) + ":" + className,
        cacheEntry  = LIVE_CACHE[key];
    if (!cacheEntry) {
      cacheEntry = LIVE_CACHE[key] = doc.getElementsByClassName(className);
    }

    return cacheEntry.length > 0;
  };
})(wysihtml5);
wysihtml5.dom.insert = function(elementToInsert) {
  return {
    after: function(element) {
      element.parentNode.insertBefore(elementToInsert, element.nextSibling);
    },
    
    before: function(element) {
      element.parentNode.insertBefore(elementToInsert, element);
    },
    
    into: function(element) {
      element.appendChild(elementToInsert);
    }
  };
};wysihtml5.dom.insertCSS = function(rules) {
  rules = rules.join("\n");
  
  return {
    into: function(doc) {
      var head         = doc.head || doc.getElementsByTagName("head")[0],
          styleElement = doc.createElement("style");

      styleElement.type = "text/css";

      if (styleElement.styleSheet) {
        styleElement.styleSheet.cssText = rules;
      } else {
        styleElement.appendChild(doc.createTextNode(rules));
      }

      if (head) {
        head.appendChild(styleElement);
      }
    }
  };
};/**
 * Method to set dom events
 *
 * @example
 *    wysihtml5.dom.observe(iframe.contentWindow.document.body, ["focus", "blur"], function() { ... });
 */
wysihtml5.dom.observe = function(element, eventNames, handler) {
  eventNames = typeof(eventNames) === "string" ? [eventNames] : eventNames;
  
  var handlerWrapper,
      eventName,
      i       = 0,
      length  = eventNames.length;
  
  for (; i<length; i++) {
    eventName = eventNames[i];
    if (element.addEventListener) {
      element.addEventListener(eventName, handler, false);
    } else {
      handlerWrapper = function(event) {
        if (!("target" in event)) {
          event.target = event.srcElement;
        }
        event.preventDefault = event.preventDefault || function() {
          this.returnValue = false;
        };
        event.stopPropagation = event.stopPropagation || function() {
          this.cancelBubble = true;
        };
        handler.call(element, event);
      };
      element.attachEvent("on" + eventName, handlerWrapper);
    }
  }
  
  return {
    stop: function() {
      var eventName,
          i       = 0,
          length  = eventNames.length;
      for (; i<length; i++) {
        eventName = eventNames[i];
        if (element.removeEventListener) {
          element.removeEventListener(eventName, handler, false);
        } else {
          element.detachEvent("on" + eventName, handlerWrapper);
        }
      }
    }
  };
};
/**
 * HTML Sanitizer
 * Rewrites the HTML based on given rules
 *
 * @param {Element|String} elementOrHtml HTML String to be sanitized OR element whose content should be sanitized
 * @param {Object} [rules] List of rules for rewriting the HTML, if there's no rule for an element it will
 *    be converted to a "span". Each rule is a key/value pair where key is the tag to convert, and value the
 *    desired substitution.
 * @param {Object} context Document object in which to parse the html, needed to sandbox the parsing
 *
 * @return {Element|String} Depends on the elementOrHtml parameter. When html then the sanitized html as string elsewise the element.
 *
 * @example
 *    var userHTML = '<div id="foo" onclick="alert(1);"><p><font color="red">foo</font><script>alert(1);</script></p></div>';
 *    wysihtml5.dom.parse(userHTML, {
 *      tags {
 *        p:      "div",      // Rename p tags to div tags
 *        font:   "span"      // Rename font tags to span tags
 *        div:    true,       // Keep them, also possible (same result when passing: "div" or true)
 *        script: undefined   // Remove script elements
 *      }
 *    });
 *    // => <div><div><span>foo bar</span></div></div>
 *
 *    var userHTML = '<table><tbody><tr><td>I'm a table!</td></tr></tbody></table>';
 *    wysihtml5.dom.parse(userHTML);
 *    // => '<span><span><span><span>I'm a table!</span></span></span></span>'
 *
 *    var userHTML = '<div>foobar<br>foobar</div>';
 *    wysihtml5.dom.parse(userHTML, {
 *      tags: {
 *        div: undefined,
 *        br:  true
 *      }
 *    });
 *    // => ''
 *
 *    var userHTML = '<div class="red">foo</div><div class="pink">bar</div>';
 *    wysihtml5.dom.parse(userHTML, {
 *      classes: {
 *        red:    1,
 *        green:  1
 *      },
 *      tags: {
 *        div: {
 *          rename_tag:     "p"
 *        }
 *      }
 *    });
 *    // => '<p class="red">foo</p><p>bar</p>'
 */
wysihtml5.dom.parse = (function() {
  
  /**
   * It's not possible to use a XMLParser/DOMParser as HTML5 is not always well-formed XML
   * new DOMParser().parseFromString('<img src="foo.gif">') will cause a parseError since the
   * node isn't closed
   *
   * Therefore we've to use the browser's ordinary HTML parser invoked by setting innerHTML.
   */
  var NODE_TYPE_MAPPING = {
        "1": _handleElement,
        "3": _handleText
      },
      // Rename unknown tags to this
      DEFAULT_NODE_NAME   = "span",
      WHITE_SPACE_REG_EXP = /\s+/,
      defaultRules        = { tags: {}, classes: {} },
      currentRules        = {};
  
  /**
   * Iterates over all childs of the element, recreates them, appends them into a document fragment
   * which later replaces the entire body content
   */
  function parse(elementOrHtml, rules, context, cleanUp) {
    wysihtml5.lang.object(currentRules).merge(defaultRules).merge(rules).get();
    
    context           = context || elementOrHtml.ownerDocument || document;
    var fragment      = context.createDocumentFragment(),
        isString      = typeof(elementOrHtml) === "string",
        element,
        newNode,
        firstChild;
    
    if (isString) {
      element = wysihtml5.dom.getAsDom(elementOrHtml, context);
    } else {
      element = elementOrHtml;
    }
    
    while (element.firstChild) {
      firstChild  = element.firstChild;
      element.removeChild(firstChild);
      newNode = _convert(firstChild, cleanUp);
      if (newNode) {
        fragment.appendChild(newNode);
      }
    }
    
    // Clear element contents
    element.innerHTML = "";
    
    // Insert new DOM tree
    element.appendChild(fragment);
    
    return isString ? wysihtml5.quirks.getCorrectInnerHTML(element) : element;
  }
  
  function _convert(oldNode, cleanUp) {
    var oldNodeType     = oldNode.nodeType,
        oldChilds       = oldNode.childNodes,
        oldChildsLength = oldChilds.length,
        newNode,
        method          = NODE_TYPE_MAPPING[oldNodeType],
        i               = 0;
    
    newNode = method && method(oldNode);
    
    if (!newNode) {
      return null;
    }
    
    for (i=0; i<oldChildsLength; i++) {
      newChild = _convert(oldChilds[i], cleanUp);
      if (newChild) {
        newNode.appendChild(newChild);
      }
    }
    
    // Cleanup senseless <span> elements
    if (cleanUp &&
        newNode.childNodes.length <= 1 &&
        newNode.nodeName.toLowerCase() === DEFAULT_NODE_NAME &&
        !newNode.attributes.length) {
      return newNode.firstChild;
    }
    
    return newNode;
  }
  
  function _handleElement(oldNode) {
    var rule,
        newNode,
        endTag,
        tagRules    = currentRules.tags,
        nodeName    = oldNode.nodeName.toLowerCase(),
        scopeName   = oldNode.scopeName;
    
    /**
     * We already parsed that element
     * ignore it! (yes, this sometimes happens in IE8 when the html is invalid)
     */
    if (oldNode._wysihtml5) {
      return null;
    }
    oldNode._wysihtml5 = 1;
    
    if (oldNode.className === "wysihtml5-temp") {
      return null;
    }
    
    /**
     * IE is the only browser who doesn't include the namespace in the
     * nodeName, that's why we have to prepend it by ourselves
     * scopeName is a proprietary IE feature
     * read more here http://msdn.microsoft.com/en-us/library/ms534388(v=vs.85).aspx
     */
    if (scopeName && scopeName != "HTML") {
      nodeName = scopeName + ":" + nodeName;
    }
    
    /**
     * Repair node
     * IE is a bit bitchy when it comes to invalid nested markup which includes unclosed tags
     * A <p> doesn't need to be closed according HTML4-5 spec, we simply replace it with a <div> to preserve its content and layout
     */
    if ("outerHTML" in oldNode) {
      if (!wysihtml5.browser.autoClosesUnclosedTags() &&
          oldNode.nodeName === "P" &&
          oldNode.outerHTML.slice(-4).toLowerCase() !== "</p>") {
        nodeName = "div";
      }
    }
    
    if (nodeName in tagRules) {
      rule = tagRules[nodeName];
      if (!rule || rule.remove) {
        return null;
      }
      
      rule = typeof(rule) === "string" ? { rename_tag: rule } : rule;
    } else if (oldNode.firstChild) {
      rule = { rename_tag: DEFAULT_NODE_NAME };
    } else {
      // Remove empty unknown elements
      return null;
    }
    
    newNode = oldNode.ownerDocument.createElement(rule.rename_tag || nodeName);
    _handleAttributes(oldNode, newNode, rule);
    
    oldNode = null;
    return newNode;
  }
  
  function _handleAttributes(oldNode, newNode, rule) {
    var attributes          = {},                         // fresh new set of attributes to set on newNode
        setClass            = rule.set_class,             // classes to set
        addClass            = rule.add_class,             // add classes based on existing attributes
        setAttributes       = rule.set_attributes,        // attributes to set on the current node
        checkAttributes     = rule.check_attributes,      // check/convert values of attributes
        allowedClasses      = currentRules.classes,
        i                   = 0,
        classes             = [],
        newClasses          = [],
        newUniqueClasses    = [],
        oldClasses          = [],
        classesLength,
        newClassesLength,
        currentClass,
        newClass,
        attributeName,
        newAttributeValue,
        method;
    
    if (setAttributes) {
      attributes = wysihtml5.lang.object(setAttributes).clone();
    }
    
    if (checkAttributes) {
      for (attributeName in checkAttributes) {
        method = attributeCheckMethods[checkAttributes[attributeName]];
        if (!method) {
          continue;
        }
        newAttributeValue = method(_getAttribute(oldNode, attributeName));
        if (typeof(newAttributeValue) === "string") {
          attributes[attributeName] = newAttributeValue;
        }
      }
    }
    
    if (setClass) {
      classes.push(setClass);
    }
    
    if (addClass) {
      for (attributeName in addClass) {
        method = addClassMethods[addClass[attributeName]];
        if (!method) {
          continue;
        }
        newClass = method(_getAttribute(oldNode, attributeName));
        if (typeof(newClass) === "string") {
          classes.push(newClass);
        }
      }
    }
    
    // make sure that wysihtml5 temp class doesn't get stripped out
    allowedClasses["_wysihtml5-temp-placeholder"] = 1;
    
    // add old classes last
    oldClasses = oldNode.getAttribute("class");
    if (oldClasses) {
      classes = classes.concat(oldClasses.split(WHITE_SPACE_REG_EXP));
    }
    classesLength = classes.length;
    for (; i<classesLength; i++) {
      currentClass = classes[i];
      if (allowedClasses[currentClass]) {
        newClasses.push(currentClass);
      }
    }
    
    // remove duplicate entries and preserve class specificity
    newClassesLength = newClasses.length;
    while (newClassesLength--) {
      currentClass = newClasses[newClassesLength];
      if (!wysihtml5.lang.array(newUniqueClasses).contains(currentClass)) {
        newUniqueClasses.unshift(currentClass);
      }
    }
    
    if (newUniqueClasses.length) {
      attributes["class"] = newUniqueClasses.join(" ");
    }
    
    // set attributes on newNode
    for (attributeName in attributes) {
      // Setting attributes can cause a js error in IE under certain circumstances
      // eg. on a <img> under https when it's new attribute value is non-https
      // TODO: Investigate this further and check for smarter handling
      try {
        newNode.setAttribute(attributeName, attributes[attributeName]);
      } catch(e) {}
    }
    
    // IE8 sometimes loses the width/height attributes when those are set before the "src"
    // so we make sure to set them again
    if (attributes.src) {
      if (typeof(attributes.width) !== "undefined") {
        newNode.setAttribute("width", attributes.width);
      }
      if (typeof(attributes.height) !== "undefined") {
        newNode.setAttribute("height", attributes.height);
      }
    }
  }
  
  /**
   * IE gives wrong results for hasAttribute/getAttribute, for example:
   *    var td = document.createElement("td");
   *    td.getAttribute("rowspan"); // => "1" in IE
   *
   * Therefore we have to check the element's outerHTML for the attribute
   */
  var HAS_GET_ATTRIBUTE_BUG = !wysihtml5.browser.supportsGetAttributeCorrectly();
  function _getAttribute(node, attributeName) {
    attributeName = attributeName.toLowerCase();
    var nodeName = node.nodeName;
    if (nodeName == "IMG" && attributeName == "src" && _isLoadedImage(node) === true) {
      // Get 'src' attribute value via object property since this will always contain the
      // full absolute url (http://...)
      // this fixes a very annoying bug in firefox (ver 3.6 & 4) and IE 8 where images copied from the same host
      // will have relative paths, which the sanitizer strips out (see attributeCheckMethods.url)
      return node.src;
    } else if (HAS_GET_ATTRIBUTE_BUG && "outerHTML" in node) {
      // Don't trust getAttribute/hasAttribute in IE 6-8, instead check the element's outerHTML
      var outerHTML      = node.outerHTML.toLowerCase(),
          // TODO: This might not work for attributes without value: <input disabled>
          hasAttribute   = outerHTML.indexOf(" " + attributeName +  "=") != -1;
      
      return hasAttribute ? node.getAttribute(attributeName) : null;
    } else{
      return node.getAttribute(attributeName);
    }
  }
  
  /**
   * Check whether the given node is a proper loaded image
   * FIXME: Returns undefined when unknown (Chrome, Safari)
   */
  function _isLoadedImage(node) {
    try {
      return node.complete && !node.mozMatchesSelector(":-moz-broken");
    } catch(e) {
      if (node.complete && node.readyState === "complete") {
        return true;
      }
    }
  }
  
  function _handleText(oldNode) {
    return oldNode.ownerDocument.createTextNode(oldNode.data);
  }
  
  
  // ------------ attribute checks ------------ \\
  var attributeCheckMethods = {
    url: (function() {
      var REG_EXP = /^https?:\/\//i;
      return function(attributeValue) {
        if (!attributeValue || !attributeValue.match(REG_EXP)) {
          return null;
        }
        return attributeValue.replace(REG_EXP, function(match) {
          return match.toLowerCase();
        });
      };
    })(),
    
    alt: (function() {
      var REG_EXP = /[^ a-z0-9_\-]/gi;
      return function(attributeValue) {
        if (!attributeValue) {
          return "";
        }
        return attributeValue.replace(REG_EXP, "");
      };
    })(),
    
    numbers: (function() {
      var REG_EXP = /\D/g;
      return function(attributeValue) {
        attributeValue = (attributeValue || "").replace(REG_EXP, "");
        return attributeValue || null;
      };
    })()
  };
  
  // ------------ class converter (converts an html attribute to a class name) ------------ \\
  var addClassMethods = {
    align_img: (function() {
      var mapping = {
        left:   "wysiwyg-float-left",
        right:  "wysiwyg-float-right"
      };
      return function(attributeValue) {
        return mapping[String(attributeValue).toLowerCase()];
      };
    })(),
    
    align_text: (function() {
      var mapping = {
        left:     "wysiwyg-text-align-left",
        right:    "wysiwyg-text-align-right",
        center:   "wysiwyg-text-align-center",
        justify:  "wysiwyg-text-align-justify"
      };
      return function(attributeValue) {
        return mapping[String(attributeValue).toLowerCase()];
      };
    })(),
    
    clear_br: (function() {
      var mapping = {
        left:   "wysiwyg-clear-left",
        right:  "wysiwyg-clear-right",
        both:   "wysiwyg-clear-both",
        all:    "wysiwyg-clear-both"
      };
      return function(attributeValue) {
        return mapping[String(attributeValue).toLowerCase()];
      };
    })(),
    
    size_font: (function() {
      var mapping = {
        "1": "wysiwyg-font-size-xx-small",
        "2": "wysiwyg-font-size-small",
        "3": "wysiwyg-font-size-medium",
        "4": "wysiwyg-font-size-large",
        "5": "wysiwyg-font-size-x-large",
        "6": "wysiwyg-font-size-xx-large",
        "7": "wysiwyg-font-size-xx-large",
        "-": "wysiwyg-font-size-smaller",
        "+": "wysiwyg-font-size-larger"
      };
      return function(attributeValue) {
        return mapping[String(attributeValue).charAt(0)];
      };
    })()
  };
  
  return parse;
})();/**
 * Checks for empty text node childs and removes them
 *
 * @param {Element} node The element in which to cleanup
 * @example
 *    wysihtml5.dom.removeEmptyTextNodes(element);
 */
wysihtml5.dom.removeEmptyTextNodes = function(node) {
  var childNode,
      childNodes        = wysihtml5.lang.array(node.childNodes).get(),
      childNodesLength  = childNodes.length,
      i                 = 0;
  for (; i<childNodesLength; i++) {
    childNode = childNodes[i];
    if (childNode.nodeType === wysihtml5.TEXT_NODE && childNode.data === "") {
      childNode.parentNode.removeChild(childNode);
    }
  }
};
/**
 * Renames an element (eg. a <div> to a <p>) and keeps its childs
 *
 * @param {Element} element The list element which should be renamed
 * @param {Element} newNodeName The desired tag name
 *
 * @example
 *    <!-- Assume the following dom: -->
 *    <ul id="list">
 *      <li>eminem</li>
 *      <li>dr. dre</li>
 *      <li>50 Cent</li>
 *    </ul>
 *
 *    <script>
 *      wysihtml5.dom.renameElement(document.getElementById("list"), "ol");
 *    </script>
 *
 *    <!-- Will result in: -->
 *    <ol>
 *      <li>eminem</li>
 *      <li>dr. dre</li>
 *      <li>50 Cent</li>
 *    </ol>
 */
wysihtml5.dom.renameElement = function(element, newNodeName) {
  var newElement = element.ownerDocument.createElement(newNodeName),
      firstChild;
  while (firstChild = element.firstChild) {
    newElement.appendChild(firstChild);
  }
  wysihtml5.dom.copyAttributes(["align", "className"]).from(element).to(newElement);
  element.parentNode.replaceChild(newElement, element);
  return newElement;
};/**
 * Takes an element, removes it and replaces it with it's childs
 * 
 * @param {Object} node The node which to replace with it's child nodes
 * @example
 *    <div id="foo">
 *      <span>hello</span>
 *    </div>
 *    <script>
 *      // Remove #foo and replace with it's children
 *      wysihtml5.dom.replaceWithChildNodes(document.getElementById("foo"));
 *    </script>
 */
wysihtml5.dom.replaceWithChildNodes = function(node) {
  if (!node.parentNode) {
    return;
  }
  
  if (!node.firstChild) {
    node.parentNode.removeChild(node);
    return;
  }
  
  var fragment = node.ownerDocument.createDocumentFragment();
  while (node.firstChild) {
    fragment.appendChild(node.firstChild);
  }
  node.parentNode.replaceChild(fragment, node);
  node = fragment = null;
};
/**
 * Unwraps an unordered/ordered list
 *
 * @param {Element} element The list element which should be unwrapped
 *
 * @example
 *    <!-- Assume the following dom: -->
 *    <ul id="list">
 *      <li>eminem</li>
 *      <li>dr. dre</li>
 *      <li>50 Cent</li>
 *    </ul>
 *
 *    <script>
 *      wysihtml5.dom.resolveList(document.getElementById("list"));
 *    </script>
 *
 *    <!-- Will result in: -->
 *    eminem<br>
 *    dr. dre<br>
 *    50 Cent<br>
 */
(function(dom) {
  function _isBlockElement(node) {
    return dom.getStyle("display").from(node) === "block";
  }
  
  function _isLineBreak(node) {
    return node.nodeName === "BR";
  }
  
  function _appendLineBreak(element) {
    var lineBreak = element.ownerDocument.createElement("br");
    element.appendChild(lineBreak);
  }
  
  function resolveList(list) {
    if (list.nodeName !== "MENU" && list.nodeName !== "UL" && list.nodeName !== "OL") {
      return;
    }
    
    var doc             = list.ownerDocument,
        fragment        = doc.createDocumentFragment(),
        previousSibling = list.previousSibling,
        firstChild,
        lastChild,
        isLastChild,
        shouldAppendLineBreak,
        listItem;
    
    if (previousSibling && !_isBlockElement(previousSibling)) {
      _appendLineBreak(fragment);
    }
    
    while (listItem = list.firstChild) {
      lastChild = listItem.lastChild;
      while (firstChild = listItem.firstChild) {
        isLastChild           = firstChild === lastChild;
        // This needs to be done before appending it to the fragment, as it otherwise will loose style information
        shouldAppendLineBreak = isLastChild && !_isBlockElement(firstChild) && !_isLineBreak(firstChild);
        fragment.appendChild(firstChild);
        if (shouldAppendLineBreak) {
          _appendLineBreak(fragment);
        }
      }
      
      listItem.parentNode.removeChild(listItem);
    }
    list.parentNode.replaceChild(fragment, list);
  }
  
  dom.resolveList = resolveList;
})(wysihtml5.dom);/**
 * Sandbox for executing javascript, parsing css styles and doing dom operations in a secure way
 *
 * Browser Compatibility:
 *  - Secure in MSIE 6+, but only when the user hasn't made changes to his security level "restricted"
 *  - Partially secure in other browsers (Firefox, Opera, Safari, Chrome, ...)
 *
 * Please note that this class can't benefit from the HTML5 sandbox attribute for the following reasons:
 *    - sandboxing doesn't work correctly with inlined content (src="javascript:'<html>...</html>'")
 *    - sandboxing of physical documents causes that the dom isn't accessible anymore from the outside (iframe.contentWindow, ...)
 *    - setting the "allow-same-origin" flag would fix that, but then still javascript and dom events refuse to fire
 *    - therefore the "allow-scripts" flag is needed, which then would deactivate any security, as the js executed inside the iframe
 *      can do anything as if the sandbox attribute wasn't set
 *
 * @param {Function} [readyCallback] Method that gets invoked when the sandbox is ready
 * @param {Object} [config] Optional parameters
 *
 * @example
 *    new wysihtml5.dom.Sandbox(function(sandbox) {
 *      sandbox.getWindow().document.body.innerHTML = '<img src=foo.gif onerror="alert(document.cookie)">';
 *    });
 */
(function(wysihtml5) {
  var /**
       * Default configuration
       */
      doc                 = document,
      /**
       * Properties to unset/protect on the window object
       */
      windowProperties    = [
        "parent", "top", "opener", "frameElement", "frames",
        "localStorage", "globalStorage", "sessionStorage", "indexedDB"
      ],
      /**
       * Properties on the window object which are set to an empty function
       */
      windowProperties2   = [
        "open", "close", "openDialog", "showModalDialog",
        "alert", "confirm", "prompt",
        "openDatabase", "postMessage",
        "XMLHttpRequest", "XDomainRequest"
      ],
      /**
       * Properties to unset/proetect on the document object
       */
      documentProperties  = [
        "referrer",
        "write", "open", "close"
      ];
  
  wysihtml5.dom.Sandbox = Base.extend(
    /** @scope wysihtml5.dom.Sandbox.prototype */ {

    constructor: function(readyCallback, config) {
      this.callback = readyCallback || wysihtml5.EMPTY_FUNCTION;
      this.config   = wysihtml5.lang.object({}).merge(config).get();
      this.iframe   = this._createIframe();
    },
    
    insertInto: function(element) {
      if (typeof(element) === "string") {
        element = doc.getElementById(element);
      }
      
      element.appendChild(this.iframe);
    },

    getIframe: function() {
      return this.iframe;
    },

    getWindow: function() {
      this._readyError();
    },

    getDocument: function() {
      this._readyError();
    },

    destroy: function() {
      var iframe = this.getIframe();
      iframe.parentNode.removeChild(iframe);
    },

    _readyError: function() {
      throw new Error("wysihtml5.Sandbox: Sandbox iframe isn't loaded yet");
    },

    /**
     * Creates the sandbox iframe
     *
     * Some important notes:
     *  - We can't use HTML5 sandbox for now:
     *    setting it causes that the iframe's dom can't be accessed from the outside
     *    Therefore we need to set the "allow-same-origin" flag which enables accessing the iframe's dom
     *    But then there's another problem, DOM events (focus, blur, change, keypress, ...) aren't fired.
     *    In order to make this happen we need to set the "allow-scripts" flag.
     *    A combination of allow-scripts and allow-same-origin is almost the same as setting no sandbox attribute at all.
     *  - Chrome & Safari, doesn't seem to support sandboxing correctly when the iframe's html is inlined (no physical document)
     *  - IE needs to have the security="restricted" attribute set before the iframe is 
     *    inserted into the dom tree
     *  - Believe it or not but in IE "security" in document.createElement("iframe") is false, even
     *    though it supports it
     *  - When an iframe has security="restricted", in IE eval() & execScript() don't work anymore
     *  - IE doesn't fire the onload event when the content is inlined in the src attribute, therefore we rely
     *    on the onreadystatechange event
     */
    _createIframe: function() {
      var that   = this,
          iframe = doc.createElement("iframe");
      iframe.className = "wysihtml5-sandbox";
      wysihtml5.dom.setAttributes({
        "security":           "restricted",
        "allowtransparency":  "true",
        "frameborder":        0,
        "width":              0,
        "height":             0,
        "marginwidth":        0,
        "marginheight":       0
      }).on(iframe);

      // Setting the src like this prevents ssl warnings in IE6
      if (wysihtml5.browser.throwsMixedContentWarningWhenIframeSrcIsEmpty()) {
        iframe.src = "javascript:'<html></html>'";
      }

      iframe.onload = function() {
        iframe.onreadystatechange = iframe.onload = null;
        that._onLoadIframe(iframe);
      };

      iframe.onreadystatechange = function() {
        if (/loaded|complete/.test(iframe.readyState)) {
          iframe.onreadystatechange = iframe.onload = null;
          that._onLoadIframe(iframe);
        }
      };

      return iframe;
    },

    /**
     * Callback for when the iframe has finished loading
     */
    _onLoadIframe: function(iframe) {
      // don't resume when the iframe got unloaded (eg. by removing it from the dom)
      if (!wysihtml5.dom.contains(doc.documentElement, iframe)) {
        return;
      }

      var that           = this,
          iframeWindow   = iframe.contentWindow,
          iframeDocument = iframe.contentWindow.document,
          charset        = doc.characterSet || doc.charset || "utf-8",
          sandboxHtml    = this._getHtml({
            charset:      charset,
            stylesheets:  this.config.stylesheets
          });

      // Create the basic dom tree including proper DOCTYPE and charset
      iframeDocument.open("text/html", "replace");
      iframeDocument.write(sandboxHtml);
      iframeDocument.close();

      this.getWindow = function() { return iframe.contentWindow; };
      this.getDocument = function() { return iframe.contentWindow.document; };

      // Catch js errors and pass them to the parent's onerror event
      // addEventListener("error") doesn't work properly in some browsers
      // TODO: apparently this doesn't work in IE9!
      iframeWindow.onerror = function(errorMessage, fileName, lineNumber) {
        throw new Error("wysihtml5.Sandbox: " + errorMessage, fileName, lineNumber);
      };

      if (!wysihtml5.browser.supportsSandboxedIframes()) {
        // Unset a bunch of sensitive variables
        // Please note: This isn't hack safe!  
        // It more or less just takes care of basic attacks and prevents accidental theft of sensitive information
        // IE is secure though, which is the most important thing, since IE is the only browser, who
        // takes over scripts & styles into contentEditable elements when copied from external websites
        // or applications (Microsoft Word, ...)
        var i, length;
        for (i=0, length=windowProperties.length; i<length; i++) {
          this._unset(iframeWindow, windowProperties[i]);
        }
        for (i=0, length=windowProperties2.length; i<length; i++) {
          this._unset(iframeWindow, windowProperties2[i], wysihtml5.EMPTY_FUNCTION);
        }
        for (i=0, length=documentProperties.length; i<length; i++) {
          this._unset(iframeDocument, documentProperties[i]);
        }
        // This doesn't work in Safari 5 
        // See http://stackoverflow.com/questions/992461/is-it-possible-to-override-document-cookie-in-webkit
        this._unset(iframeDocument, "cookie", "", true);
      }

      this.loaded = true;

      // Trigger the callback
      setTimeout(function() { that.callback(that); }, 0);
    },

    _getHtml: function(templateVars) {
      var stylesheets = templateVars.stylesheets,
          html        = "",
          i           = 0,
          length;
      stylesheets = typeof(stylesheets) === "string" ? [stylesheets] : stylesheets;
      if (stylesheets) {
        length = stylesheets.length;
        for (; i<length; i++) {
          html += '<link rel="stylesheet" href="' + stylesheets[i] + '">';
        }
      }
      templateVars.stylesheets = html;

      return wysihtml5.lang.string(
        '<!DOCTYPE html><html><head>'
        + '<meta charset="#{charset}">#{stylesheets}</head>'
        + '<body></body></html>'
      ).interpolate(templateVars);
    },

    /**
     * Method to unset/override existing variables
     * @example
     *    // Make cookie unreadable and unwritable
     *    this._unset(document, "cookie", "", true);
     */
    _unset: function(object, property, value, setter) {
      try { object[property] = value; } catch(e) {}

      try { object.__defineGetter__(property, function() { return value; }); } catch(e) {}
      if (setter) {
        try { object.__defineSetter__(property, function() {}); } catch(e) {}
      }

      if (!wysihtml5.browser.crashesWhenDefineProperty(property)) {
        try {
          var config = {
            get: function() { return value; }
          };
          if (setter) {
            config.set = function() {};
          }
          Object.defineProperty(object, property, config);
        } catch(e) {}
      }
    }
  });
})(wysihtml5);
(function() {
  var mapping = {
    "className": "class"
  };
  wysihtml5.dom.setAttributes = function(attributes) {
    return {
      on: function(element) {
        for (var i in attributes) {
          element.setAttribute(mapping[i] || i, attributes[i]);
        }
      }
    }
  };
})();wysihtml5.dom.setStyles = function(styles) {
  return {
    on: function(element) {
      var style = element.style;
      if (typeof(styles) === "string") {
        style.cssText += ";" + styles;
        return;
      }
      for (var i in styles) {
        if (i === "float") {
          style.cssFloat = styles[i];
          style.styleFloat = styles[i];
        } else {
          style[i] = styles[i];
        }
      }
    }
  };
};/**
 * Simulate HTML5 placeholder attribute
 *
 * Needed since
 *    - div[contentEditable] elements don't support it
 *    - older browsers (such as IE8 and Firefox 3.6) don't support it at all
 *
 * @param {Object} parent Instance of main wysihtml5.Editor class
 * @param {Element} view Instance of wysihtml5.views.* class
 * @param {String} placeholderText
 *
 * @example
 *    wysihtml.dom.simulatePlaceholder(this, composer, "Foobar");
 */
(function(dom) {
  dom.simulatePlaceholder = function(editor, view, placeholderText) {
    var CLASS_NAME = "placeholder",
        unset = function() {
          if (view.hasPlaceholderSet()) {
            view.clear();
          }
          dom.removeClass(view.element, CLASS_NAME);
        },
        set = function() {
          if (view.isEmpty()) {
            view.setValue(placeholderText);
            dom.addClass(view.element, CLASS_NAME);
          }
        };

    editor
      .observe("set_placeholder", set)
      .observe("unset_placeholder", unset)
      .observe("focus:composer", unset)
      .observe("paste:composer", unset)
      .observe("blur:composer", set);

    set();
  };
})(wysihtml5.dom);
(function(dom) {
  var documentElement = document.documentElement;
  if ("textContent" in documentElement) {
    dom.setTextContent = function(element, text) {
      element.textContent = text;
    };

    dom.getTextContent = function(element) {
      return element.textContent;
    };
  } else if ("innerText" in documentElement) {
    dom.setTextContent = function(element, text) {
      element.innerText = text;
    };

    dom.getTextContent = function(element) {
      return element.innerText;
    };
  } else {
    dom.setTextContent = function(element, text) {
      element.nodeValue = text;
    };

    dom.getTextContent = function(element) {
      return element.nodeValue;
    };
  }
})(wysihtml5.dom);

/**
 * Fix most common html formatting misbehaviors of browsers implementation when inserting
 * content via copy & paste contentEditable
 *
 * @author Christopher Blum
 */
wysihtml5.quirks.cleanPastedHTML = (function() {
  // TODO: We probably need more rules here
  var defaultRules = {
    // When pasting underlined links <a> into a contentEditable, IE thinks, it has to insert <u> to keep the styling
    "a u": wysihtml5.dom.replaceWithChildNodes
  };
  
  function cleanPastedHTML(elementOrHtml, rules, context) {
    rules   = rules || defaultRules;
    context = context || elementOrHtml.ownerDocument || document;
    
    var element,
        isString = typeof(elementOrHtml) === "string",
        method,
        matches,
        matchesLength,
        i,
        j = 0;
    if (isString) {
      element = wysihtml5.dom.getAsDom(elementOrHtml, context);
    } else {
      element = elementOrHtml;
    }
    
    for (i in rules) {
      matches       = element.querySelectorAll(i);
      method        = rules[i];
      matchesLength = matches.length;
      for (; j<matchesLength; j++) {
        method(matches[j]);
      }
    }
    
    matches = elementOrHtml = rules = null;
    
    return isString ? element.innerHTML : element;
  }
  
  return cleanPastedHTML;
})();/**
 * IE and Opera leave an empty paragraph in the contentEditable element after clearing it
 *
 * @param {Object} contentEditableElement The contentEditable element to observe for clearing events
 * @exaple
 *    wysihtml5.quirks.ensureProperClearing(myContentEditableElement);
 */
(function(wysihtml5) {
  var dom = wysihtml5.dom;
  
  wysihtml5.quirks.ensureProperClearing = (function() {
    var clearIfNecessary = function(event) {
      var element = this;
      setTimeout(function() {
        var innerHTML = element.innerHTML.toLowerCase();
        if (innerHTML == "<p>&nbsp;</p>" ||
            innerHTML == "<p>&nbsp;</p><p>&nbsp;</p>") {
          element.innerHTML = "";
        }
      }, 0);
    };

    return function(composer) {
      dom.observe(composer.element, ["cut", "keydown"], clearIfNecessary);
    };
  })();



  /**
   * In Opera when the caret is in the first and only item of a list (<ul><li>|</li></ul>) and the list is the first child of the contentEditable element, it's impossible to delete the list by hitting backspace
   *
   * @param {Object} contentEditableElement The contentEditable element to observe for clearing events
   * @exaple
   *    wysihtml5.quirks.ensureProperClearing(myContentEditableElement);
   */
  wysihtml5.quirks.ensureProperClearingOfLists = (function() {
    var ELEMENTS_THAT_CONTAIN_LI = ["OL", "UL", "MENU"];

    var clearIfNecessary = function(element, contentEditableElement) {
      if (!contentEditableElement.firstChild || !wysihtml5.lang.array(ELEMENTS_THAT_CONTAIN_LI).contains(contentEditableElement.firstChild.nodeName)) {
        return;
      }

      var list = dom.getParentElement(element, { nodeName: ELEMENTS_THAT_CONTAIN_LI });
      if (!list) {
        return;
      }

      var listIsFirstChildOfContentEditable = list == contentEditableElement.firstChild;
      if (!listIsFirstChildOfContentEditable) {
        return;
      }

      var hasOnlyOneListItem = list.childNodes.length <= 1;
      if (!hasOnlyOneListItem) {
        return;
      }

      var onlyListItemIsEmpty = list.firstChild ? list.firstChild.innerHTML === "" : true;
      if (!onlyListItemIsEmpty) {
        return;
      }

      list.parentNode.removeChild(list);
    };

    return function(composer) {
      dom.observe(composer.element, "keydown", function(event) {
        if (event.keyCode !== wysihtml5.BACKSPACE_KEY) {
          return;
        }

        var element = composer.selection.getSelectedNode();
        clearIfNecessary(element, composer.element);
      });
    };
  })();

})(wysihtml5);
// See https://bugzilla.mozilla.org/show_bug.cgi?id=664398
//
// In Firefox this:
//      var d = document.createElement("div");
//      d.innerHTML ='<a href="~"></a>';
//      d.innerHTML;
// will result in:
//      <a href="%7E"></a>
// which is wrong
(function(wysihtml5) {
  var TILDE_ESCAPED = "%7E";
  wysihtml5.quirks.getCorrectInnerHTML = function(element) {
    var innerHTML = element.innerHTML;
    if (innerHTML.indexOf(TILDE_ESCAPED) === -1) {
      return innerHTML;
    }
    
    var elementsWithTilde = element.querySelectorAll("[href*='~'], [src*='~']"),
        url,
        urlToSearch,
        length,
        i;
    for (i=0, length=elementsWithTilde.length; i<length; i++) {
      url         = elementsWithTilde[i].href || elementsWithTilde[i].src;
      urlToSearch = wysihtml5.lang.string(url).replace("~").by(TILDE_ESCAPED);
      innerHTML   = wysihtml5.lang.string(innerHTML).replace(urlToSearch).by(url);
    }
    return innerHTML;
  };
})(wysihtml5);/**
 * Some browsers don't insert line breaks when hitting return in a contentEditable element
 *    - Opera & IE insert new <p> on return
 *    - Chrome & Safari insert new <div> on return
 *    - Firefox inserts <br> on return (yippie!)
 *
 * @param {Element} element
 *
 * @example
 *    wysihtml5.quirks.insertLineBreakOnReturn(element);
 */
(function(wysihtml5) {
  var dom                                           = wysihtml5.dom,
      USE_NATIVE_LINE_BREAK_WHEN_CARET_INSIDE_TAGS  = ["LI", "P", "H1", "H2", "H3", "H4", "H5", "H6"],
      LIST_TAGS                                     = ["UL", "OL", "MENU"];
  
  wysihtml5.quirks.insertLineBreakOnReturn = function(composer) {
    function unwrap(selectedNode) {
      var parentElement = dom.getParentElement(selectedNode, { nodeName: ["P", "DIV"] }, 2);
      if (!parentElement) {
        return;
      }

      var invisibleSpace = document.createTextNode(wysihtml5.INVISIBLE_SPACE);
      dom.insert(invisibleSpace).before(parentElement);
      dom.replaceWithChildNodes(parentElement);
      composer.selection.selectNode(invisibleSpace);
    }

    function keyDown(event) {
      var keyCode = event.keyCode;
      if (event.shiftKey || (keyCode !== wysihtml5.ENTER_KEY && keyCode !== wysihtml5.BACKSPACE_KEY)) {
        return;
      }

      var element         = event.target,
          selectedNode    = composer.selection.getSelectedNode(),
          blockElement    = dom.getParentElement(selectedNode, { nodeName: USE_NATIVE_LINE_BREAK_WHEN_CARET_INSIDE_TAGS }, 4);
      if (blockElement) {
        // Some browsers create <p> elements after leaving a list
        // check after keydown of backspace and return whether a <p> got inserted and unwrap it
        if (blockElement.nodeName === "LI" && (keyCode === wysihtml5.ENTER_KEY || keyCode === wysihtml5.BACKSPACE_KEY)) {
          setTimeout(function() {
            var selectedNode = composer.selection.getSelectedNode(),
                list,
                div;
            if (!selectedNode) {
              return;
            }

            list = dom.getParentElement(selectedNode, {
              nodeName: LIST_TAGS
            }, 2);

            if (list) {
              return;
            }

            unwrap(selectedNode);
          }, 0);
        } else if (blockElement.nodeName.match(/H[1-6]/) && keyCode === wysihtml5.ENTER_KEY) {
          setTimeout(function() {
            unwrap(composer.selection.getSelectedNode());
          }, 0);
        } 
        return;
      }

      if (keyCode === wysihtml5.ENTER_KEY && !wysihtml5.browser.insertsLineBreaksOnReturn()) {
        composer.commands.exec("insertLineBreak");
        event.preventDefault();
      }
    }
    
    // keypress doesn't fire when you hit backspace
    dom.observe(composer.element.ownerDocument, "keydown", keyDown);
  };
})(wysihtml5);/**
 * Force rerendering of a given element
 * Needed to fix display misbehaviors of IE
 *
 * @param {Element} element The element object which needs to be rerendered
 * @example
 *    wysihtml5.quirks.redraw(document.body);
 */
(function(wysihtml5) {
  var CLASS_NAME = "wysihtml5-quirks-redraw";
  
  wysihtml5.quirks.redraw = function(element) {
    wysihtml5.dom.addClass(element, CLASS_NAME);
    wysihtml5.dom.removeClass(element, CLASS_NAME);
    
    // Following hack is needed for firefox to make sure that image resize handles are properly removed
    try {
      var doc = element.ownerDocument;
      doc.execCommand("italic", false, null);
      doc.execCommand("italic", false, null);
    } catch(e) {}
  };
})(wysihtml5);/**
 * Selection API
 *
 * @example
 *    var selection = new wysihtml5.Selection(editor);
 */
(function(wysihtml5) {
  var dom = wysihtml5.dom;
  
  function _getCumulativeOffsetTop(element) {
    var top = 0;
    if (element.parentNode) {
      do {
        top += element.offsetTop || 0;
        element = element.offsetParent;
      } while (element);
    }
    return top;
  }
  
  wysihtml5.Selection = Base.extend(
    /** @scope wysihtml5.Selection.prototype */ {
    constructor: function(editor) {
      // Make sure that our external range library is initialized
      window.rangy.init();
      
      this.editor   = editor;
      this.composer = editor.composer;
      this.doc      = this.composer.doc;
    },
    
    /**
     * Get the current selection as a bookmark to be able to later restore it
     *
     * @return {Object} An object that represents the current selection
     */
    getBookmark: function() {
      var range = this.getRange();
      return range && range.cloneRange();
    },

    /**
     * Restore a selection retrieved via wysihtml5.Selection.prototype.getBookmark
     *
     * @param {Object} bookmark An object that represents the current selection
     */
    setBookmark: function(bookmark) {
      if (!bookmark) {
        return;
      }

      this.setSelection(bookmark);
    },

    /**
     * Set the caret in front of the given node
     *
     * @param {Object} node The element or text node where to position the caret in front of
     * @example
     *    selection.setBefore(myElement);
     */
    setBefore: function(node) {
      var range = rangy.createRange(this.doc);
      range.setStartBefore(node);
      range.setEndBefore(node);
      return this.setSelection(range);
    },

    /**
     * Set the caret after the given node
     *
     * @param {Object} node The element or text node where to position the caret in front of
     * @example
     *    selection.setBefore(myElement);
     */
    setAfter: function(node) {
      var range = rangy.createRange(this.doc);
      range.setStartAfter(node);
      range.setEndAfter(node);
      return this.setSelection(range);
    },

    /**
     * Ability to select/mark nodes
     *
     * @param {Element} node The node/element to select
     * @example
     *    selection.selectNode(document.getElementById("my-image"));
     */
    selectNode: function(node) {
      var range           = rangy.createRange(this.doc),
          isElement       = node.nodeType === wysihtml5.ELEMENT_NODE,
          canHaveHTML     = "canHaveHTML" in node ? node.canHaveHTML : (node.nodeName !== "IMG"),
          content         = isElement ? node.innerHTML : node.data,
          isEmpty         = (content === "" || content === wysihtml5.INVISIBLE_SPACE),
          displayStyle    = dom.getStyle("display").from(node),
          isBlockElement  = (displayStyle === "block" || displayStyle === "list-item");

      if (isEmpty && isElement && canHaveHTML) {
        // Make sure that caret is visible in node by inserting a zero width no breaking space
        try { node.innerHTML = wysihtml5.INVISIBLE_SPACE; } catch(e) {}
      }

      if (canHaveHTML) {
        range.selectNodeContents(node);
      } else {
        range.selectNode(node);
      }

      if (canHaveHTML && isEmpty && isElement) {
        range.collapse(isBlockElement);
      } else if (canHaveHTML && isEmpty) {
        range.setStartAfter(node);
        range.setEndAfter(node);
      }

      this.setSelection(range);
    },

    /**
     * Get the node which contains the selection
     *
     * @param {Boolean} [controlRange] (only IE) Whether it should return the selected ControlRange element when the selection type is a "ControlRange"
     * @return {Object} The node that contains the caret
     * @example
     *    var nodeThatContainsCaret = selection.getSelectedNode();
     */
    getSelectedNode: function(controlRange) {
      var selection,
          range;

      if (controlRange && this.doc.selection && this.doc.selection.type === "Control") {
        range = this.doc.selection.createRange();
        if (range && range.length) {
          return range.item(0);
        }
      }

      selection = this.getSelection(this.doc);
      if (selection.focusNode === selection.anchorNode) {
        return selection.focusNode;
      } else {
        range = this.getRange(this.doc);
        return range ? range.commonAncestorContainer : this.doc.body;
      }
    },

    executeAndRestore: function(method, restoreScrollPosition) {
      var body                  = this.doc.body,
          oldScrollTop          = restoreScrollPosition && body.scrollTop,
          oldScrollLeft         = restoreScrollPosition && body.scrollLeft,
          className             = "_wysihtml5-temp-placeholder",
          placeholderHTML       = '<span class="' + className + '">' + wysihtml5.INVISIBLE_SPACE + '</span>',
          range                 = this.getRange(this.doc),
          newRange;
      
      // Nothing selected, execute and say goodbye
      if (!range) {
        method(body, body);
        return;
      }
      
      var node = range.createContextualFragment(placeholderHTML);
      range.insertNode(node);
      
      // Make sure that a potential error doesn't cause our placeholder element to be left as a placeholder
      try {
        method(range.startContainer, range.endContainer);
      } catch(e3) {
        setTimeout(function() { throw e3; }, 0);
      }
      
      caretPlaceholder = this.doc.querySelector("." + className);
      if (caretPlaceholder) {
        newRange = rangy.createRange(this.doc);
        newRange.selectNode(caretPlaceholder);
        newRange.deleteContents();
        this.setSelection(newRange);
      } else {
        // fallback for when all hell breaks loose
        body.focus();
      }

      if (restoreScrollPosition) {
        body.scrollTop  = oldScrollTop;
        body.scrollLeft = oldScrollLeft;
      }

      // Remove it again, just to make sure that the placeholder is definitely out of the dom tree
      try {
        caretPlaceholder.parentNode.removeChild(caretPlaceholder);
      } catch(e4) {}
    },

    /**
     * Different approach of preserving the selection (doesn't modify the dom)
     * Takes all text nodes in the selection and saves the selection position in the first and last one
     */
    executeAndRestoreSimple: function(method) {
      var range = this.getRange(),
          body  = this.doc.body,
          newRange,
          firstNode,
          lastNode,
          textNodes,
          rangeBackup;

      // Nothing selected, execute and say goodbye
      if (!range) {
        method(body, body);
        return;
      }

      textNodes = range.getNodes([3]);
      firstNode = textNodes[0] || range.startContainer;
      lastNode  = textNodes[textNodes.length - 1] || range.endContainer;

      rangeBackup = {
        collapsed:      range.collapsed,
        startContainer: firstNode,
        startOffset:    firstNode === range.startContainer ? range.startOffset : 0,
        endContainer:   lastNode,
        endOffset:      lastNode === range.endContainer ? range.endOffset : lastNode.length
      };

      try {
        method(range.startContainer, range.endContainer);
      } catch(e) {
        setTimeout(function() { throw e; }, 0);
      }

      newRange = rangy.createRange(this.doc);
      try { newRange.setStart(rangeBackup.startContainer, rangeBackup.startOffset); } catch(e1) {}
      try { newRange.setEnd(rangeBackup.endContainer, rangeBackup.endOffset); } catch(e2) {}
      try { this.setSelection(newRange); } catch(e3) {}
    },

    /**
     * Insert html at the caret position and move the cursor after the inserted html
     *
     * @param {String} html HTML string to insert
     * @example
     *    selection.insertHTML("<p>foobar</p>");
     */
    insertHTML: function(html) {
      var range     = rangy.createRange(this.doc),
          node      = range.createContextualFragment(html),
          lastChild = node.lastChild;
      this.insertNode(node);
      if (lastChild) {
        this.setAfter(lastChild);
      }
    },

    /**
     * Insert a node at the caret position and move the cursor behind it
     *
     * @param {Object} node HTML string to insert
     * @example
     *    selection.insertNode(document.createTextNode("foobar"));
     */
    insertNode: function(node) {
      var range = this.getRange();
      if (range) {
        range.insertNode(node);
      }
    },

    /**
     * Wraps current selection with the given node
     *
     * @param {Object} node The node to surround the selected elements with
     */
    surround: function(node) {
      var range = this.getRange();
      if (!range) {
        return;
      }

      try {
        // This only works when the range boundaries are not overlapping other elements
        range.surroundContents(node);
        this.selectNode(node);
      } catch(e) {
        // fallback
        node.appendChild(range.extractContents());
        range.insertNode(node);
      }
    },

    /**
     * Scroll the current caret position into the view
     * FIXME: This is a bit hacky, there might be a smarter way of doing this
     *
     * @example
     *    selection.scrollIntoView();
     */
    scrollIntoView: function() {
      var doc           = this.doc,
          hasScrollBars = doc.documentElement.scrollHeight > doc.documentElement.offsetHeight,
          tempElement   = doc._wysihtml5ScrollIntoViewElement = doc._wysihtml5ScrollIntoViewElement || (function() {
            var element = doc.createElement("span");
            // The element needs content in order to be able to calculate it's position properly
            element.innerHTML = wysihtml5.INVISIBLE_SPACE;
            return element;
          })(),
          offsetTop;

      if (hasScrollBars) {
        this.insertNode(tempElement);
        offsetTop = _getCumulativeOffsetTop(tempElement);
        tempElement.parentNode.removeChild(tempElement);
        if (offsetTop > doc.body.scrollTop) {
          doc.body.scrollTop = offsetTop;
        }
      }
    },

    /**
     * Select line where the caret is in
     */
    selectLine: function() {
      if (wysihtml5.browser.supportsSelectionModify()) {
        this._selectLine_W3C();
      } else if (this.doc.selection) {
        this._selectLine_MSIE();
      }
    },

    /**
     * See https://developer.mozilla.org/en/DOM/Selection/modify
     */
    _selectLine_W3C: function() {
      var win       = this.doc.defaultView,
          selection = win.getSelection();
      selection.modify("extend", "left", "lineboundary");
      selection.modify("extend", "right", "lineboundary");
    },

    _selectLine_MSIE: function() {
      var range       = this.doc.selection.createRange(),
          rangeTop    = range.boundingTop,
          rangeHeight = range.boundingHeight,
          scrollWidth = this.doc.body.scrollWidth,
          rangeBottom,
          rangeEnd,
          measureNode,
          i,
          j;

      if (!range.moveToPoint) {
        return;
      }

      if (rangeTop === 0) {
        // Don't know why, but when the selection ends at the end of a line
        // range.boundingTop is 0
        measureNode = this.doc.createElement("span");
        this.insertNode(measureNode);
        rangeTop = measureNode.offsetTop;
        measureNode.parentNode.removeChild(measureNode);
      }

      rangeTop += 1;

      for (i=-10; i<scrollWidth; i+=2) {
        try {
          range.moveToPoint(i, rangeTop);
          break;
        } catch(e1) {}
      }

      // Investigate the following in order to handle multi line selections
      // rangeBottom = rangeTop + (rangeHeight ? (rangeHeight - 1) : 0);
      rangeBottom = rangeTop;
      rangeEnd = this.doc.selection.createRange();
      for (j=scrollWidth; j>=0; j--) {
        try {
          rangeEnd.moveToPoint(j, rangeBottom);
          break;
        } catch(e2) {}
      }

      range.setEndPoint("EndToEnd", rangeEnd);
      range.select();
    },

    getText: function() {
      var selection = this.getSelection();
      return selection ? selection.toString() : "";
    },

    getNodes: function(nodeType, filter) {
      var range = this.getRange();
      if (range) {
        return range.getNodes([nodeType], filter);
      } else {
        return [];
      }
    },
    
    getRange: function() {
      var selection = this.getSelection();
      return selection && selection.rangeCount && selection.getRangeAt(0);
    },

    getSelection: function() {
      return rangy.getSelection(this.doc.defaultView || this.doc.parentWindow);
    },

    setSelection: function(range) {
      var win       = this.doc.defaultView || this.doc.parentWindow,
          selection = rangy.getSelection(win);
      return selection.setSingleRange(range);
    }
  });
  
})(wysihtml5);
/**
 * Inspired by the rangy CSS Applier module written by Tim Down and licensed under the MIT license.
 * http://code.google.com/p/rangy/
 *
 * changed in order to be able ...
 *    - to use custom tags
 *    - to detect and replace similar css classes via reg exp
 */
(function(wysihtml5, rangy) {
  var defaultTagName = "span";
  
  var REG_EXP_WHITE_SPACE = /\s+/g;
  
  function hasClass(el, cssClass, regExp) {
    if (!el.className) {
      return false;
    }
    
    var matchingClassNames = el.className.match(regExp) || [];
    return matchingClassNames[matchingClassNames.length - 1] === cssClass;
  }

  function addClass(el, cssClass, regExp) {
    if (el.className) {
      removeClass(el, regExp);
      el.className += " " + cssClass;
    } else {
      el.className = cssClass;
    }
  }

  function removeClass(el, regExp) {
    if (el.className) {
      el.className = el.className.replace(regExp, "");
    }
  }
  
  function hasSameClasses(el1, el2) {
    return el1.className.replace(REG_EXP_WHITE_SPACE, " ") == el2.className.replace(REG_EXP_WHITE_SPACE, " ");
  }

  function replaceWithOwnChildren(el) {
    var parent = el.parentNode;
    while (el.firstChild) {
      parent.insertBefore(el.firstChild, el);
    }
    parent.removeChild(el);
  }

  function elementsHaveSameNonClassAttributes(el1, el2) {
    if (el1.attributes.length != el2.attributes.length) {
      return false;
    }
    for (var i = 0, len = el1.attributes.length, attr1, attr2, name; i < len; ++i) {
      attr1 = el1.attributes[i];
      name = attr1.name;
      if (name != "class") {
        attr2 = el2.attributes.getNamedItem(name);
        if (attr1.specified != attr2.specified) {
          return false;
        }
        if (attr1.specified && attr1.nodeValue !== attr2.nodeValue) {
          return false;
        }
      }
    }
    return true;
  }

  function isSplitPoint(node, offset) {
    if (rangy.dom.isCharacterDataNode(node)) {
      if (offset == 0) {
        return !!node.previousSibling;
      } else if (offset == node.length) {
        return !!node.nextSibling;
      } else {
        return true;
      }
    }

    return offset > 0 && offset < node.childNodes.length;
  }

  function splitNodeAt(node, descendantNode, descendantOffset) {
    var newNode;
    if (rangy.dom.isCharacterDataNode(descendantNode)) {
      if (descendantOffset == 0) {
        descendantOffset = rangy.dom.getNodeIndex(descendantNode);
        descendantNode = descendantNode.parentNode;
      } else if (descendantOffset == descendantNode.length) {
        descendantOffset = rangy.dom.getNodeIndex(descendantNode) + 1;
        descendantNode = descendantNode.parentNode;
      } else {
        newNode = rangy.dom.splitDataNode(descendantNode, descendantOffset);
      }
    }
    if (!newNode) {
      newNode = descendantNode.cloneNode(false);
      if (newNode.id) {
        newNode.removeAttribute("id");
      }
      var child;
      while ((child = descendantNode.childNodes[descendantOffset])) {
        newNode.appendChild(child);
      }
      rangy.dom.insertAfter(newNode, descendantNode);
    }
    return (descendantNode == node) ? newNode : splitNodeAt(node, newNode.parentNode, rangy.dom.getNodeIndex(newNode));
  }
  
  function Merge(firstNode) {
    this.isElementMerge = (firstNode.nodeType == wysihtml5.ELEMENT_NODE);
    this.firstTextNode = this.isElementMerge ? firstNode.lastChild : firstNode;
    this.textNodes = [this.firstTextNode];
  }

  Merge.prototype = {
    doMerge: function() {
      var textBits = [], textNode, parent, text;
      for (var i = 0, len = this.textNodes.length; i < len; ++i) {
        textNode = this.textNodes[i];
        parent = textNode.parentNode;
        textBits[i] = textNode.data;
        if (i) {
          parent.removeChild(textNode);
          if (!parent.hasChildNodes()) {
            parent.parentNode.removeChild(parent);
          }
        }
      }
      this.firstTextNode.data = text = textBits.join("");
      return text;
    },

    getLength: function() {
      var i = this.textNodes.length, len = 0;
      while (i--) {
        len += this.textNodes[i].length;
      }
      return len;
    },

    toString: function() {
      var textBits = [];
      for (var i = 0, len = this.textNodes.length; i < len; ++i) {
        textBits[i] = "'" + this.textNodes[i].data + "'";
      }
      return "[Merge(" + textBits.join(",") + ")]";
    }
  };

  function HTMLApplier(tagNames, cssClass, similarClassRegExp, normalize) {
    this.tagNames = tagNames || [defaultTagName];
    this.cssClass = cssClass || "";
    this.similarClassRegExp = similarClassRegExp;
    this.normalize = normalize;
    this.applyToAnyTagName = false;
  }

  HTMLApplier.prototype = {
    getAncestorWithClass: function(node) {
      var cssClassMatch;
      while (node) {
        cssClassMatch = this.cssClass ? hasClass(node, this.cssClass, this.similarClassRegExp) : true;
        if (node.nodeType == wysihtml5.ELEMENT_NODE && rangy.dom.arrayContains(this.tagNames, node.tagName.toLowerCase()) && cssClassMatch) {
          return node;
        }
        node = node.parentNode;
      }
      return false;
    },

    // Normalizes nodes after applying a CSS class to a Range.
    postApply: function(textNodes, range) {
      var firstNode = textNodes[0], lastNode = textNodes[textNodes.length - 1];

      var merges = [], currentMerge;

      var rangeStartNode = firstNode, rangeEndNode = lastNode;
      var rangeStartOffset = 0, rangeEndOffset = lastNode.length;

      var textNode, precedingTextNode;

      for (var i = 0, len = textNodes.length; i < len; ++i) {
        textNode = textNodes[i];
        precedingTextNode = this.getAdjacentMergeableTextNode(textNode.parentNode, false);
        if (precedingTextNode) {
          if (!currentMerge) {
            currentMerge = new Merge(precedingTextNode);
            merges.push(currentMerge);
          }
          currentMerge.textNodes.push(textNode);
          if (textNode === firstNode) {
            rangeStartNode = currentMerge.firstTextNode;
            rangeStartOffset = rangeStartNode.length;
          }
          if (textNode === lastNode) {
            rangeEndNode = currentMerge.firstTextNode;
            rangeEndOffset = currentMerge.getLength();
          }
        } else {
          currentMerge = null;
        }
      }

      // Test whether the first node after the range needs merging
      var nextTextNode = this.getAdjacentMergeableTextNode(lastNode.parentNode, true);
      if (nextTextNode) {
        if (!currentMerge) {
          currentMerge = new Merge(lastNode);
          merges.push(currentMerge);
        }
        currentMerge.textNodes.push(nextTextNode);
      }

      // Do the merges
      if (merges.length) {
        for (i = 0, len = merges.length; i < len; ++i) {
          merges[i].doMerge();
        }
        // Set the range boundaries
        range.setStart(rangeStartNode, rangeStartOffset);
        range.setEnd(rangeEndNode, rangeEndOffset);
      }
    },
    
    getAdjacentMergeableTextNode: function(node, forward) {
        var isTextNode = (node.nodeType == wysihtml5.TEXT_NODE);
        var el = isTextNode ? node.parentNode : node;
        var adjacentNode;
        var propName = forward ? "nextSibling" : "previousSibling";
        if (isTextNode) {
          // Can merge if the node's previous/next sibling is a text node
          adjacentNode = node[propName];
          if (adjacentNode && adjacentNode.nodeType == wysihtml5.TEXT_NODE) {
            return adjacentNode;
          }
        } else {
          // Compare element with its sibling
          adjacentNode = el[propName];
          if (adjacentNode && this.areElementsMergeable(node, adjacentNode)) {
            return adjacentNode[forward ? "firstChild" : "lastChild"];
          }
        }
        return null;
    },
    
    areElementsMergeable: function(el1, el2) {
      return rangy.dom.arrayContains(this.tagNames, (el1.tagName || "").toLowerCase())
        && rangy.dom.arrayContains(this.tagNames, (el2.tagName || "").toLowerCase())
        && hasSameClasses(el1, el2)
        && elementsHaveSameNonClassAttributes(el1, el2);
    },

    createContainer: function(doc) {
      var el = doc.createElement(this.tagNames[0]);
      if (this.cssClass) {
        el.className = this.cssClass;
      }
      return el;
    },

    applyToTextNode: function(textNode) {
      var parent = textNode.parentNode;
      if (parent.childNodes.length == 1 && rangy.dom.arrayContains(this.tagNames, parent.tagName.toLowerCase())) {
        if (this.cssClass) {
          addClass(parent, this.cssClass, this.similarClassRegExp);
        }
      } else {
        var el = this.createContainer(rangy.dom.getDocument(textNode));
        textNode.parentNode.insertBefore(el, textNode);
        el.appendChild(textNode);
      }
    },

    isRemovable: function(el) {
      return rangy.dom.arrayContains(this.tagNames, el.tagName.toLowerCase()) && wysihtml5.lang.string(el.className).trim() == this.cssClass;
    },

    undoToTextNode: function(textNode, range, ancestorWithClass) {
      if (!range.containsNode(ancestorWithClass)) {
        // Split out the portion of the ancestor from which we can remove the CSS class
        var ancestorRange = range.cloneRange();
        ancestorRange.selectNode(ancestorWithClass);

        if (ancestorRange.isPointInRange(range.endContainer, range.endOffset) && isSplitPoint(range.endContainer, range.endOffset)) {
          splitNodeAt(ancestorWithClass, range.endContainer, range.endOffset);
          range.setEndAfter(ancestorWithClass);
        }
        if (ancestorRange.isPointInRange(range.startContainer, range.startOffset) && isSplitPoint(range.startContainer, range.startOffset)) {
          ancestorWithClass = splitNodeAt(ancestorWithClass, range.startContainer, range.startOffset);
        }
      }
      
      if (this.similarClassRegExp) {
        removeClass(ancestorWithClass, this.similarClassRegExp);
      }
      if (this.isRemovable(ancestorWithClass)) {
        replaceWithOwnChildren(ancestorWithClass);
      }
    },

    applyToRange: function(range) {
        var textNodes = range.getNodes([wysihtml5.TEXT_NODE]);
        if (!textNodes.length) {
          try {
            var node = this.createContainer(range.endContainer.ownerDocument);
            range.surroundContents(node);
            this.selectNode(range, node);
            return;
          } catch(e) {}
        }
        
        range.splitBoundaries();
        textNodes = range.getNodes([wysihtml5.TEXT_NODE]);
        
        if (textNodes.length) {
          var textNode;

          for (var i = 0, len = textNodes.length; i < len; ++i) {
            textNode = textNodes[i];
            if (!this.getAncestorWithClass(textNode)) {
              this.applyToTextNode(textNode);
            }
          }
          
          range.setStart(textNodes[0], 0);
          textNode = textNodes[textNodes.length - 1];
          range.setEnd(textNode, textNode.length);
          
          if (this.normalize) {
            this.postApply(textNodes, range);
          }
        }
    },

    undoToRange: function(range) {
      var textNodes = range.getNodes([wysihtml5.TEXT_NODE]), textNode, ancestorWithClass;
      if (textNodes.length) {
        range.splitBoundaries();
        textNodes = range.getNodes([wysihtml5.TEXT_NODE]);
      } else {
        var doc = range.endContainer.ownerDocument,
            node = doc.createTextNode(wysihtml5.INVISIBLE_SPACE);
        range.insertNode(node);
        range.selectNode(node);
        textNodes = [node];
      }
      
      for (var i = 0, len = textNodes.length; i < len; ++i) {
        textNode = textNodes[i];
        ancestorWithClass = this.getAncestorWithClass(textNode);
        if (ancestorWithClass) {
          this.undoToTextNode(textNode, range, ancestorWithClass);
        }
      }
      
      if (len == 1) {
        this.selectNode(range, textNodes[0]);
      } else {
        range.setStart(textNodes[0], 0);
        textNode = textNodes[textNodes.length - 1];
        range.setEnd(textNode, textNode.length);

        if (this.normalize) {
          this.postApply(textNodes, range);
        }
      }
    },
    
    selectNode: function(range, node) {
      var isElement       = node.nodeType === wysihtml5.ELEMENT_NODE,
          canHaveHTML     = "canHaveHTML" in node ? node.canHaveHTML : true,
          content         = isElement ? node.innerHTML : node.data,
          isEmpty         = (content === "" || content === wysihtml5.INVISIBLE_SPACE);

      if (isEmpty && isElement && canHaveHTML) {
        // Make sure that caret is visible in node by inserting a zero width no breaking space
        try { node.innerHTML = wysihtml5.INVISIBLE_SPACE; } catch(e) {}
      }
      range.selectNodeContents(node);
      if (isEmpty && isElement) {
        range.collapse(false);
      } else if (isEmpty) {
        range.setStartAfter(node);
        range.setEndAfter(node);
      }
    },
    
    getTextSelectedByRange: function(textNode, range) {
      var textRange = range.cloneRange();
      textRange.selectNodeContents(textNode);

      var intersectionRange = textRange.intersection(range);
      var text = intersectionRange ? intersectionRange.toString() : "";
      textRange.detach();

      return text;
    },

    isAppliedToRange: function(range) {
      var ancestors = [],
          ancestor,
          textNodes = range.getNodes([wysihtml5.TEXT_NODE]);
      if (!textNodes.length) {
        ancestor = this.getAncestorWithClass(range.startContainer);
        return ancestor ? [ancestor] : false;
      }
      
      for (var i = 0, len = textNodes.length, selectedText; i < len; ++i) {
        selectedText = this.getTextSelectedByRange(textNodes[i], range);
        ancestor = this.getAncestorWithClass(textNodes[i]);
        if (selectedText != "" && !ancestor) {
          return false;
        } else {
          ancestors.push(ancestor);
        }
      }
      return ancestors;
    },

    toggleRange: function(range) {
      if (this.isAppliedToRange(range)) {
        this.undoToRange(range);
      } else {
        this.applyToRange(range);
      }
    }
  };

  wysihtml5.selection.HTMLApplier = HTMLApplier;
  
})(wysihtml5, rangy);/**
 * Rich Text Query/Formatting Commands
 * 
 * @example
 *    var commands = new wysihtml5.Commands(editor);
 */
wysihtml5.Commands = Base.extend(
  /** @scope wysihtml5.Commands.prototype */ {
  constructor: function(editor) {
    this.editor   = editor;
    this.composer = editor.composer;
    this.doc      = this.composer.doc;
  },
  
  /**
   * Check whether the browser supports the given command
   *
   * @param {String} command The command string which to check (eg. "bold", "italic", "insertUnorderedList")
   * @example
   *    commands.supports("createLink");
   */
  support: function(command) {
    return wysihtml5.browser.supportsCommand(this.doc, command);
  },
  
  /**
   * Check whether the browser supports the given command
   *
   * @param {String} command The command string which to execute (eg. "bold", "italic", "insertUnorderedList")
   * @param {String} [value] The command value parameter, needed for some commands ("createLink", "insertImage", ...), optional for commands that don't require one ("bold", "underline", ...)
   * @example
   *    commands.exec("insertImage", "http://a1.twimg.com/profile_images/113868655/schrei_twitter_reasonably_small.jpg");
   */
  exec: function(command, value) {
    var obj     = wysihtml5.commands[command],
        method  = obj && obj.exec;
    
    this.editor.fire("beforecommand:composer");
    
    if (method) {
      return method.call(obj, this.composer, command, value);
    } else {
      try {
        // try/catch for buggy firefox
        return this.doc.execCommand(command, false, value);
      } catch(e) {}
    }
    
    this.editor.fire("aftercommand:composer");
  },
  
  /**
   * Check whether the current command is active
   * If the caret is within a bold text, then calling this with command "bold" should return true
   *
   * @param {String} command The command string which to check (eg. "bold", "italic", "insertUnorderedList")
   * @param {String} [commandValue] The command value parameter (eg. for "insertImage" the image src)
   * @return {Boolean} Whether the command is active
   * @example
   *    var isCurrentSelectionBold = commands.state("bold");
   */
  state: function(command, commandValue) {
    var obj     = wysihtml5.commands[command],
        method  = obj && obj.state;
    if (method) {
      return method.call(obj, this.composer, command, commandValue);
    } else {
      try {
        // try/catch for buggy firefox
        return this.doc.queryCommandState(command);
      } catch(e) {
        return false;
      }
    }
  },
  
  /**
   * Get the current command's value
   *
   * @param {String} command The command string which to check (eg. "formatBlock")
   * @return {String} The command value
   * @example
   *    var currentBlockElement = commands.value("formatBlock");
   */
  value: function(command) {
    var obj     = wysihtml5.commands[command],
        method  = obj && obj.value;
    if (method) {
      return method.call(obj, this.composer, command);
    } else {
      try {
        // try/catch for buggy firefox
        return this.doc.queryCommandValue(command);
      } catch(e) {
        return null;
      }
    }
  }
});(function(wysihtml5) {
  var undef;
  
  wysihtml5.commands.bold = {
    exec: function(composer, command) {
      return wysihtml5.commands.formatInline.exec(composer, command, "b");
    },

    state: function(composer, command, color) {
      // element.ownerDocument.queryCommandState("bold") results:
      // firefox: only <b>
      // chrome:  <b>, <strong>, <h1>, <h2>, ...
      // ie:      <b>, <strong>
      // opera:   <b>, <strong>
      return wysihtml5.commands.formatInline.state(composer, command, "b");
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);

(function(wysihtml5) {
  var undef,
      NODE_NAME = "A",
      dom       = wysihtml5.dom;
  
  function _removeFormat(composer, anchors) {
    var length  = anchors.length,
        i       = 0,
        anchor,
        codeElement,
        textContent;
    for (; i<length; i++) {
      anchor      = anchors[i];
      codeElement = dom.getParentElement(anchor, { nodeName: "code" });
      textContent = dom.getTextContent(anchor);

      // if <a> contains url-like text content, rename it to <code> to prevent re-autolinking
      // else replace <a> with its childNodes
      if (textContent.match(dom.autoLink.URL_REG_EXP) && !codeElement) {
        // <code> element is used to prevent later auto-linking of the content
        codeElement = dom.renameElement(anchor, "code");
      } else {
        dom.replaceWithChildNodes(anchor);
      }
    }
  }

  function _format(composer, attributes) {
    var doc             = composer.doc,
        tempClass       = "_wysihtml5-temp-" + (+new Date()),
        tempClassRegExp = /non-matching-class/g,
        i               = 0,
        length,
        anchors,
        anchor,
        hasElementChild,
        isEmpty,
        elementToSetCaretAfter,
        textContent,
        whiteSpace,
        j;
    wysihtml5.commands.formatInline.exec(composer, undef, NODE_NAME, tempClass, tempClassRegExp);
    anchors = doc.querySelectorAll(NODE_NAME + "." + tempClass);
    length  = anchors.length;
    for (; i<length; i++) {
      anchor = anchors[i];
      anchor.removeAttribute("class");
      for (j in attributes) {
        anchor.setAttribute(j, attributes[j]);
      }
    }

    elementToSetCaretAfter = anchor;
    if (length === 1) {
      textContent = dom.getTextContent(anchor);
      hasElementChild = !!anchor.querySelector("*");
      isEmpty = textContent === "" || textContent === wysihtml5.INVISIBLE_SPACE;
      if (!hasElementChild && isEmpty) {
        dom.setTextContent(anchor, anchor.href);
        whiteSpace = doc.createTextNode(" ");
        composer.selection.setAfter(anchor);
        composer.selection.insertNode(whiteSpace);
        elementToSetCaretAfter = whiteSpace;
      }
    }
    composer.selection.setAfter(elementToSetCaretAfter);
  }
  
  wysihtml5.commands.createLink = {
    /**
     * TODO: Use HTMLApplier or formatInline here
     *
     * Turns selection into a link
     * If selection is already a link, it removes the link and wraps it with a <code> element
     * The <code> element is needed to avoid auto linking
     * 
     * @example
     *    // either ...
     *    wysihtml5.commands.createLink.exec(composer, "createLink", "http://www.google.de");
     *    // ... or ...
     *    wysihtml5.commands.createLink.exec(composer, "createLink", { href: "http://www.google.de", target: "_blank" });
     */
    exec: function(composer, command, value) {
      var anchors = this.state(composer, command);
      if (anchors) {
        // Selection contains links
        composer.selection.executeAndRestore(function() {
          _removeFormat(composer, anchors);
        });
      } else {
        // Create links
        value = typeof(value) === "object" ? value : { href: value };
        _format(composer, value);
      }
    },

    state: function(composer, command) {
      return wysihtml5.commands.formatInline.state(composer, command, "A");
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);/**
 * document.execCommand("fontSize") will create either inline styles (firefox, chrome) or use font tags
 * which we don't want
 * Instead we set a css class
 */
(function(wysihtml5) {
  var undef,
      REG_EXP = /wysiwyg-font-size-[a-z]+/g;
  
  wysihtml5.commands.fontSize = {
    exec: function(composer, command, size) {
      return wysihtml5.commands.formatInline.exec(composer, command, "span", "wysiwyg-font-size-" + size, REG_EXP);
    },

    state: function(composer, command, size) {
      return wysihtml5.commands.formatInline.state(composer, command, "span", "wysiwyg-font-size-" + size, REG_EXP);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);
/**
 * document.execCommand("foreColor") will create either inline styles (firefox, chrome) or use font tags
 * which we don't want
 * Instead we set a css class
 */
(function(wysihtml5) {
  var undef,
      REG_EXP = /wysiwyg-color-[a-z]+/g;
  
  wysihtml5.commands.foreColor = {
    exec: function(composer, command, color) {
      return wysihtml5.commands.formatInline.exec(composer, command, "span", "wysiwyg-color-" + color, REG_EXP);
    },

    state: function(composer, command, color) {
      return wysihtml5.commands.formatInline.state(composer, command, "span", "wysiwyg-color-" + color, REG_EXP);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef,
      dom                     = wysihtml5.dom,
      DEFAULT_NODE_NAME       = "DIV",
      // Following elements are grouped
      // when the caret is within a H1 and the H4 is invoked, the H1 should turn into H4
      // instead of creating a H4 within a H1 which would result in semantically invalid html
      BLOCK_ELEMENTS_GROUP    = ["H1", "H2", "H3", "H4", "H5", "H6", "P", "BLOCKQUOTE", DEFAULT_NODE_NAME];
  
  /**
   * Remove similiar classes (based on classRegExp)
   * and add the desired class name
   */
  function _addClass(element, className, classRegExp) {
    if (element.className) {
      _removeClass(element, classRegExp);
      element.className += " " + className;
    } else {
      element.className = className;
    }
  }

  function _removeClass(element, classRegExp) {
    element.className = element.className.replace(classRegExp, "");
  }

  /**
   * Check whether given node is a text node and whether it's empty
   */
  function _isBlankTextNode(node) {
    return node.nodeType === wysihtml5.TEXT_NODE && !wysihtml5.lang.string(node.data).trim();
  }

  /**
   * Returns previous sibling node that is not a blank text node
   */
  function _getPreviousSiblingThatIsNotBlank(node) {
    var previousSibling = node.previousSibling;
    while (previousSibling && _isBlankTextNode(previousSibling)) {
      previousSibling = previousSibling.previousSibling;
    }
    return previousSibling;
  }

  /**
   * Returns next sibling node that is not a blank text node
   */
  function _getNextSiblingThatIsNotBlank(node) {
    var nextSibling = node.nextSibling;
    while (nextSibling && _isBlankTextNode(nextSibling)) {
      nextSibling = nextSibling.nextSibling;
    }
    return nextSibling;
  }

  /**
   * Adds line breaks before and after the given node if the previous and next siblings
   * aren't already causing a visual line break (block element or <br>)
   */
  function _addLineBreakBeforeAndAfter(node) {
    var doc             = node.ownerDocument,
        nextSibling     = _getNextSiblingThatIsNotBlank(node),
        previousSibling = _getPreviousSiblingThatIsNotBlank(node);

    if (nextSibling && !_isLineBreakOrBlockElement(nextSibling)) {
      node.parentNode.insertBefore(doc.createElement("br"), nextSibling);
    }
    if (previousSibling && !_isLineBreakOrBlockElement(previousSibling)) {
      node.parentNode.insertBefore(doc.createElement("br"), node);
    }
  }

  /**
   * Removes line breaks before and after the given node
   */
  function _removeLineBreakBeforeAndAfter(node) {
    var nextSibling     = _getNextSiblingThatIsNotBlank(node),
        previousSibling = _getPreviousSiblingThatIsNotBlank(node);

    if (nextSibling && _isLineBreak(nextSibling)) {
      nextSibling.parentNode.removeChild(nextSibling);
    }
    if (previousSibling && _isLineBreak(previousSibling)) {
      previousSibling.parentNode.removeChild(previousSibling);
    }
  }

  function _removeLastChildIfLineBreak(node) {
    var lastChild = node.lastChild;
    if (lastChild && _isLineBreak(lastChild)) {
      lastChild.parentNode.removeChild(lastChild);
    }
  }

  function _isLineBreak(node) {
    return node.nodeName === "BR";
  }

  /**
   * Checks whether the elment causes a visual line break
   * (<br> or block elements)
   */
  function _isLineBreakOrBlockElement(element) {
    if (_isLineBreak(element)) {
      return true;
    }

    if (dom.getStyle("display").from(element) === "block") {
      return true;
    }

    return false;
  }

  /**
   * Execute native query command
   * and if necessary modify the inserted node's className
   */
  function _execCommand(doc, command, nodeName, className) {
    if (className) {
      var eventListener = dom.observe(doc, "DOMNodeInserted", function(event) {
        var target = event.target,
            displayStyle;
        if (target.nodeType !== wysihtml5.ELEMENT_NODE) {
          return;
        }
        displayStyle = dom.getStyle("display").from(target);
        if (displayStyle.substr(0, 6) !== "inline") {
          // Make sure that only block elements receive the given class
          target.className += " " + className;
        }
      });
    }
    doc.execCommand(command, false, nodeName);
    if (eventListener) {
      eventListener.stop();
    }
  }

  function _selectLineAndWrap(composer, element) {
    composer.selection.selectLine();
    composer.selection.surround(element);
    _removeLineBreakBeforeAndAfter(element);
    _removeLastChildIfLineBreak(element);
    composer.selection.selectNode(element);
  }

  function _hasClasses(element) {
    return !!wysihtml5.lang.string(element.className).trim();
  }
  
  wysihtml5.commands.formatBlock = {
    exec: function(composer, command, nodeName, className, classRegExp) {
      var doc          = composer.doc,
          blockElement = this.state(composer, command, nodeName, className, classRegExp),
          selectedNode;

      nodeName = typeof(nodeName) === "string" ? nodeName.toUpperCase() : nodeName;

      if (blockElement) {
        composer.selection.executeAndRestoreSimple(function() {
          if (classRegExp) {
            _removeClass(blockElement, classRegExp);
          }
          var hasClasses = _hasClasses(blockElement);
          if (!hasClasses && blockElement.nodeName === (nodeName || DEFAULT_NODE_NAME)) {
            // Insert a line break afterwards and beforewards when there are siblings
            // that are not of type line break or block element
            _addLineBreakBeforeAndAfter(blockElement);
            dom.replaceWithChildNodes(blockElement);
          } else if (hasClasses) {
            // Make sure that styling is kept by renaming the element to <div> and copying over the class name
            dom.renameElement(blockElement, DEFAULT_NODE_NAME);
          }
        });
        return;
      }

      // Find similiar block element and rename it (<h2 class="foo"></h2>  =>  <h1 class="foo"></h1>)
      if (nodeName === null || wysihtml5.lang.array(BLOCK_ELEMENTS_GROUP).contains(nodeName)) {
        selectedNode = composer.selection.getSelectedNode();
        blockElement = dom.getParentElement(selectedNode, {
          nodeName: BLOCK_ELEMENTS_GROUP
        });

        if (blockElement) {
          composer.selection.executeAndRestoreSimple(function() {
            // Rename current block element to new block element and add class
            if (nodeName) {
              blockElement = dom.renameElement(blockElement, nodeName);
            }
            if (className) {
              _addClass(blockElement, className, classRegExp);
            }
          });
          return;
        }
      }

      if (composer.commands.support(command)) {
        _execCommand(doc, command, nodeName || DEFAULT_NODE_NAME, className);
        return;
      }

      blockElement = doc.createElement(nodeName || DEFAULT_NODE_NAME);
      if (className) {
        blockElement.className = className;
      }
      _selectLineAndWrap(composer, blockElement);
    },

    state: function(composer, command, nodeName, className, classRegExp) {
      nodeName = typeof(nodeName) === "string" ? nodeName.toUpperCase() : nodeName;
      var selectedNode = composer.selection.getSelectedNode();
      return dom.getParentElement(selectedNode, {
        nodeName:     nodeName,
        className:    className,
        classRegExp:  classRegExp
      });
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);/**
 * formatInline scenarios for tag "B" (| = caret, |foo| = selected text)
 *
 *   #1 caret in unformatted text:
 *      abcdefg|
 *   output:
 *      abcdefg<b>|</b>
 *   
 *   #2 unformatted text selected:
 *      abc|deg|h
 *   output:
 *      abc<b>|deg|</b>h
 *   
 *   #3 unformatted text selected across boundaries:
 *      ab|c <span>defg|h</span>
 *   output:
 *      ab<b>|c </b><span><b>defg</b>|h</span>
 *
 *   #4 formatted text entirely selected
 *      <b>|abc|</b>
 *   output:
 *      |abc|
 *
 *   #5 formatted text partially selected
 *      <b>ab|c|</b>
 *   output:
 *      <b>ab</b>|c|
 *
 *   #6 formatted text selected across boundaries
 *      <span>ab|c</span> <b>de|fgh</b>
 *   output:
 *      <span>ab|c</span> de|<b>fgh</b>
 */
(function(wysihtml5) {
  var undef,
      // Treat <b> as <strong> and vice versa
      ALIAS_MAPPING = {
        "strong": "b",
        "em":     "i",
        "b":      "strong",
        "i":      "em"
      },
      htmlApplier = {};
  
  function _getTagNames(tagName) {
    var alias = ALIAS_MAPPING[tagName];
    return alias ? [tagName.toLowerCase(), alias.toLowerCase()] : [tagName.toLowerCase()];
  }
  
  function _getApplier(tagName, className, classRegExp) {
    var identifier = tagName + ":" + className;
    if (!htmlApplier[identifier]) {
      htmlApplier[identifier] = new wysihtml5.selection.HTMLApplier(_getTagNames(tagName), className, classRegExp, true);
    }
    return htmlApplier[identifier];
  }
  
  wysihtml5.commands.formatInline = {
    exec: function(composer, command, tagName, className, classRegExp) {
      var range = composer.selection.getRange();
      if (!range) {
        return false;
      }
      _getApplier(tagName, className, classRegExp).toggleRange(range);
      composer.selection.setSelection(range);
    },

    state: function(composer, command, tagName, className, classRegExp) {
      var doc           = composer.doc,
          aliasTagName  = ALIAS_MAPPING[tagName] || tagName,
          range;

      // Check whether the document contains a node with the desired tagName
      if (!wysihtml5.dom.hasElementWithTagName(doc, tagName) &&
          !wysihtml5.dom.hasElementWithTagName(doc, aliasTagName)) {
        return false;
      }

       // Check whether the document contains a node with the desired className
      if (className && !wysihtml5.dom.hasElementWithClassName(doc, className)) {
         return false;
      }

      range = composer.selection.getRange();
      if (!range) {
        return false;
      }

      return _getApplier(tagName, className, classRegExp).isAppliedToRange(range);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef;
  
  wysihtml5.commands.insertHTML = {
    exec: function(composer, command, html) {
      if (composer.commands.support(command)) {
        composer.doc.execCommand(command, false, html);
      } else {
        composer.selection.insertHTML(html);
      }
    },

    state: function() {
      return false;
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var NODE_NAME = "IMG";
  
  wysihtml5.commands.insertImage = {
    /**
     * Inserts an <img>
     * If selection is already an image link, it removes it
     * 
     * @example
     *    // either ...
     *    wysihtml5.commands.insertImage.exec(composer, "insertImage", "http://www.google.de/logo.jpg");
     *    // ... or ...
     *    wysihtml5.commands.insertImage.exec(composer, "insertImage", { src: "http://www.google.de/logo.jpg", title: "foo" });
     */
    exec: function(composer, command, value) {
      value = typeof(value) === "object" ? value : { src: value };

      var doc     = composer.doc,
          image   = this.state(composer),
          textNode,
          i,
          parent;

      if (image) {
        // Image already selected, set the caret before it and delete it
        composer.selection.setBefore(image);
        parent = image.parentNode;
        parent.removeChild(image);

        // and it's parent <a> too if it hasn't got any other relevant child nodes
        wysihtml5.dom.removeEmptyTextNodes(parent);
        if (parent.nodeName === "A" && !parent.firstChild) {
          composer.selection.setAfter(parent);
          parent.parentNode.removeChild(parent);
        }

        // firefox and ie sometimes don't remove the image handles, even though the image got removed
        wysihtml5.quirks.redraw(composer.element);
        return;
      }

      image = doc.createElement(NODE_NAME);

      for (i in value) {
        image[i] = value[i];
      }

      composer.selection.insertNode(image);
      if (wysihtml5.browser.hasProblemsSettingCaretAfterImg()) {
        textNode = doc.createTextNode(wysihtml5.INVISIBLE_SPACE);
        composer.selection.insertNode(textNode);
        composer.selection.setAfter(textNode);
      } else {
        composer.selection.setAfter(image);
      }
    },

    state: function(composer) {
      var doc = composer.doc,
          selectedNode,
          text,
          imagesInSelection;

      if (!wysihtml5.dom.hasElementWithTagName(doc, NODE_NAME)) {
        return false;
      }

      selectedNode = composer.selection.getSelectedNode();
      if (!selectedNode) {
        return false;
      }

      if (selectedNode.nodeName === NODE_NAME) {
        // This works perfectly in IE
        return selectedNode;
      }

      if (selectedNode.nodeType !== wysihtml5.ELEMENT_NODE) {
        return false;
      }

      text = composer.selection.getText();
      text = wysihtml5.lang.string(text).trim();
      if (text) {
        return false;
      }

      imagesInSelection = composer.selection.getNodes(wysihtml5.ELEMENT_NODE, function(node) {
        return node.nodeName === "IMG";
      });

      if (imagesInSelection.length !== 1) {
        return false;
      }

      return imagesInSelection[0];
    },

    value: function(composer) {
      var image = this.state(composer);
      return image && image.src;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef,
      LINE_BREAK = "<br>" + (wysihtml5.browser.needsSpaceAfterLineBreak() ? " " : "");
  
  wysihtml5.commands.insertLineBreak = {
    exec: function(composer, command) {
      if (composer.commands.support(command)) {
        composer.doc.execCommand(command, false, null);
        if (!wysihtml5.browser.autoScrollsToCaret()) {
          composer.selection.scrollIntoView();
        }
      } else {
        composer.commands.exec("insertHTML", LINE_BREAK);
      }
    },

    state: function() {
      return false;
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef;
  
  wysihtml5.commands.insertOrderedList = {
    exec: function(composer, command) {
      var doc = composer.doc,
          selectedNode,
          isEmpty,
          tempElement,
          list;

      if (composer.commands.support(command)) {
        doc.execCommand(command, false, null);
      } else {
        selectedNode = composer.selection.getSelectedNode();
        list = wysihtml5.dom.getParentElement(selectedNode, { nodeName: ["UL", "OL"] }, 4);
        if (!list) {
          tempElement = doc.createElement("span");
          composer.selection.surround(tempElement);
          isEmpty = tempElement.innerHTML === "" || tempElement.innerHTML === wysihtml5.INVISIBLE_SPACE;
          composer.selection.executeAndRestoreSimple(function() {
            list = wysihtml5.dom.convertToList(tempElement, "ol");
          });

          if (isEmpty) {
            composer.selection.selectNode(list.querySelector("li"));
          }
          return;
        }

        composer.selection.executeAndRestoreSimple(function() {
          if (list.nodeName === "OL") {
            // Unwrap list
            // <ol><li>foo</li><li>bar</li></ol>
            // becomes:
            // foo<br>bar<br>
            wysihtml5.dom.resolveList(list);
          } else if (list.nodeName === "UL" || list.nodeName === "MENU") {
            // Turn an unordered list into an ordered list
            // <ul><li>foo</li><li>bar</li></ul>
            // becomes:
            // <ol><li>foo</li><li>bar</li></ol>
            wysihtml5.dom.renameElement(list, "ol");
          }
        });
      }
    },

    state: function(composer, command) {
      try {
        return composer.doc.queryCommandState(command);
      } catch(e) {
        return false;
      }
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef;
  
  wysihtml5.commands.insertUnorderedList = {
    exec: function(composer, command) {
      var doc = composer.doc,
          selectedNode,
          isEmpty,
          tempElement,
          list;

      if (composer.commands.support(command)) {
        doc.execCommand(command, false, null);
      } else {
        selectedNode = composer.selection.getSelectedNode();
        list = wysihtml5.dom.getParentElement(selectedNode, { nodeName: ["UL", "OL"] });

        if (!list) {
          tempElement = doc.createElement("span");
          composer.selection.surround(tempElement);
          isEmpty = tempElement.innerHTML === "" || tempElement.innerHTML === wysihtml5.INVISIBLE_SPACE;
          composer.selection.executeAndRestoreSimple(function() {
            list = wysihtml5.dom.convertToList(tempElement, "ul");
          });

          if (isEmpty) {
            composer.selection.selectNode(list.querySelector("li"));
          }
          return;
        }

        composer.selection.executeAndRestoreSimple(function() {
          if (list.nodeName === "UL") {
            // Unwrap list
            // <ul><li>foo</li><li>bar</li></ul>
            // becomes:
            // foo<br>bar<br>
            wysihtml5.dom.resolveList(list);
          } else if (list.nodeName === "OL" || list.nodeName === "MENU") {
            // Turn an ordered list into an unordered list
            // <ol><li>foo</li><li>bar</li></ol>
            // becomes:
            // <ul><li>foo</li><li>bar</li></ul>
            wysihtml5.dom.renameElement(list, "ul");
          }
        });
      }
    },

    state: function(composer, command) {
      try {
        return composer.doc.queryCommandState(command);
      } catch(e) {
        return false;
      }
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef;
  
  wysihtml5.commands.italic = {
    exec: function(composer, command) {
      return wysihtml5.commands.formatInline.exec(composer, command, "i");
    },

    state: function(composer, command, color) {
      // element.ownerDocument.queryCommandState("italic") results:
      // firefox: only <i>
      // chrome:  <i>, <em>, <blockquote>, ...
      // ie:      <i>, <em>
      // opera:   only <i>
      return wysihtml5.commands.formatInline.state(composer, command, "i");
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef,
      CLASS_NAME  = "wysiwyg-text-align-center",
      REG_EXP     = /wysiwyg-text-align-[a-z]+/g;
  
  wysihtml5.commands.justifyCenter = {
    exec: function(composer, command) {
      return wysihtml5.commands.formatBlock.exec(composer, "formatBlock", null, CLASS_NAME, REG_EXP);
    },

    state: function(composer, command) {
      return wysihtml5.commands.formatBlock.state(composer, "formatBlock", null, CLASS_NAME, REG_EXP);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef,
      CLASS_NAME  = "wysiwyg-text-align-left",
      REG_EXP     = /wysiwyg-text-align-[a-z]+/g;
  
  wysihtml5.commands.justifyLeft = {
    exec: function(composer, command) {
      return wysihtml5.commands.formatBlock.exec(composer, "formatBlock", null, CLASS_NAME, REG_EXP);
    },

    state: function(composer, command) {
      return wysihtml5.commands.formatBlock.state(composer, "formatBlock", null, CLASS_NAME, REG_EXP);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef,
      CLASS_NAME  = "wysiwyg-text-align-right",
      REG_EXP     = /wysiwyg-text-align-[a-z]+/g;
  
  wysihtml5.commands.justifyRight = {
    exec: function(composer, command) {
      return wysihtml5.commands.formatBlock.exec(composer, "formatBlock", null, CLASS_NAME, REG_EXP);
    },

    state: function(composer, command) {
      return wysihtml5.commands.formatBlock.state(composer, "formatBlock", null, CLASS_NAME, REG_EXP);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);(function(wysihtml5) {
  var undef,
      REG_EXP     = /wysiwyg-text-decoration-underline/g,
      CLASS_NAME  = "wysiwyg-text-decoration-underline";
  
  wysihtml5.commands.underline = {
    exec: function(composer, command) {
      return wysihtml5.commands.formatInline.exec(composer, command, "span", CLASS_NAME, REG_EXP);
    },

    state: function(composer, command) {
      return wysihtml5.commands.formatInline.state(composer, command, "span", CLASS_NAME, REG_EXP);
    },

    value: function() {
      return undef;
    }
  };
})(wysihtml5);/**
 * Undo Manager for wysihtml5
 * slightly inspired by http://rniwa.com/editing/undomanager.html#the-undomanager-interface
 */
(function(wysihtml5) {
  var Z_KEY               = 90,
      Y_KEY               = 89,
      BACKSPACE_KEY       = 8,
      DELETE_KEY          = 46,
      MAX_HISTORY_ENTRIES = 40,
      UNDO_HTML           = '<span id="_wysihtml5-undo" class="_wysihtml5-temp">' + wysihtml5.INVISIBLE_SPACE + '</span>',
      REDO_HTML           = '<span id="_wysihtml5-redo" class="_wysihtml5-temp">' + wysihtml5.INVISIBLE_SPACE + '</span>',
      dom                 = wysihtml5.dom;
  
  function cleanTempElements(doc) {
    var tempElement;
    while (tempElement = doc.querySelector("._wysihtml5-temp")) {
      tempElement.parentNode.removeChild(tempElement);
    }
  }
  
  wysihtml5.UndoManager = wysihtml5.lang.Dispatcher.extend(
    /** @scope wysihtml5.UndoManager.prototype */ {
    constructor: function(editor) {
      this.editor = editor;
      this.composer = editor.composer;
      this.element = this.composer.element;
      this.history = [this.composer.getValue()];
      this.position = 1;
      
      // Undo manager currently only supported in browsers who have the insertHTML command (not IE)
      if (this.composer.commands.support("insertHTML")) {
        this._observe();
      }
    },
    
    _observe: function() {
      var that      = this,
          doc       = this.composer.sandbox.getDocument(),
          lastKey;
          
      // Catch CTRL+Z and CTRL+Y
      dom.observe(this.element, "keydown", function(event) {
        if (event.altKey || (!event.ctrlKey && !event.metaKey)) {
          return;
        }
        
        var keyCode = event.keyCode,
            isUndo = keyCode === Z_KEY && !event.shiftKey,
            isRedo = (keyCode === Z_KEY && event.shiftKey) || (keyCode === Y_KEY);
        
        if (isUndo) {
          that.undo();
          event.preventDefault();
        } else if (isRedo) {
          that.redo();
          event.preventDefault();
        }
      });
      
      // Catch delete and backspace
      dom.observe(this.element, "keydown", function(event) {
        var keyCode = event.keyCode;
        if (keyCode === lastKey) {
          return;
        }
        
        lastKey = keyCode;
        
        if (keyCode === BACKSPACE_KEY || keyCode === DELETE_KEY) {
          that.transact();
        }
      });
      
      // Now this is very hacky:
      // These days browsers don't offer a undo/redo event which we could hook into
      // to be notified when the user hits undo/redo in the contextmenu.
      // Therefore we simply insert two elements as soon as the contextmenu gets opened.
      // The last element being inserted will be immediately be removed again by a exexCommand("undo")
      //  => When the second element appears in the dom tree then we know the user clicked "redo" in the context menu
      //  => When the first element disappears from the dom tree then we know the user clicked "undo" in the context menu
      if (wysihtml5.browser.hasUndoInContextMenu()) {
        var interval, observed, cleanUp = function() {
          cleanTempElements(doc);
          clearInterval(interval);
        };
        
        dom.observe(this.element, "contextmenu", function() {
          cleanUp();
          that.composer.selection.executeAndRestoreSimple(function() {
            if (that.element.lastChild) {
              that.composer.selection.setAfter(that.element.lastChild);
            }

            // enable undo button in context menu
            doc.execCommand("insertHTML", false, UNDO_HTML);
            // enable redo button in context menu
            doc.execCommand("insertHTML", false, REDO_HTML);
            doc.execCommand("undo", false, null);
          });

          interval = setInterval(function() {
            if (doc.getElementById("_wysihtml5-redo")) {
              cleanUp();
              that.redo();
            } else if (!doc.getElementById("_wysihtml5-undo")) {
              cleanUp();
              that.undo();
            }
          }, 400);

          if (!observed) {
            observed = true;
            dom.observe(document, "mousedown", cleanUp);
            dom.observe(doc, ["mousedown", "paste", "cut", "copy"], cleanUp);
          }
        });
      }
      
      this.editor
        .observe("newword:composer", function() {
          that.transact();
        })
        
        .observe("beforecommand:composer", function() {
          that.transact();
        });
    },
    
    transact: function() {
      var previousHtml  = this.history[this.position - 1],
          currentHtml   = this.composer.getValue();
      
      if (currentHtml == previousHtml) {
        return;
      }
      
      var length = this.history.length = this.position;
      if (length > MAX_HISTORY_ENTRIES) {
        this.history.shift();
        this.position--;
      }
      
      this.position++;
      this.history.push(currentHtml);
    },
    
    undo: function() {
      this.transact();
      
      if (this.position <= 1) {
        return;
      }
      
      this.set(this.history[--this.position - 1]);
      this.editor.fire("undo:composer");
    },
    
    redo: function() {
      if (this.position >= this.history.length) {
        return;
      }
      
      this.set(this.history[++this.position - 1]);
      this.editor.fire("redo:composer");
    },
    
    set: function(html) {
      this.composer.setValue(html);
      this.editor.focus(true);
    }
  });
})(wysihtml5);
/**
 * TODO: the following methods still need unit test coverage
 */
wysihtml5.views.View = Base.extend(
  /** @scope wysihtml5.views.View.prototype */ {
  constructor: function(parent, textareaElement, config) {
    this.parent   = parent;
    this.element  = textareaElement;
    this.config   = config;
    
    this._observeViewChange();
  },
  
  _observeViewChange: function() {
    var that = this;
    this.parent.observe("beforeload", function() {
      that.parent.observe("change_view", function(view) {
        if (view === that.name) {
          that.parent.currentView = that;
          that.show();
          // Using tiny delay here to make sure that the placeholder is set before focusing
          setTimeout(function() { that.focus(); }, 0);
        } else {
          that.hide();
        }
      });
    });
  },
  
  focus: function() {
    if (this.element.ownerDocument.querySelector(":focus") === this.element) {
      return;
    }
    
    try { this.element.focus(); } catch(e) {}
  },
  
  hide: function() {
    this.element.style.display = "none";
  },
  
  show: function() {
    this.element.style.display = "";
  },
  
  disable: function() {
    this.element.setAttribute("disabled", "disabled");
  },
  
  enable: function() {
    this.element.removeAttribute("disabled");
  }
});(function(wysihtml5) {
  var dom       = wysihtml5.dom,
      browser   = wysihtml5.browser;
  
  wysihtml5.views.Composer = wysihtml5.views.View.extend(
    /** @scope wysihtml5.views.Composer.prototype */ {
    name: "composer",

    // Needed for firefox in order to display a proper caret in an empty contentEditable
    CARET_HACK: "<br>",

    constructor: function(parent, textareaElement, config) {
      this.base(parent, textareaElement, config);
      this.textarea = this.parent.textarea;
      this._initSandbox();
    },

    clear: function() {
      this.element.innerHTML = browser.displaysCaretInEmptyContentEditableCorrectly() ? "" : this.CARET_HACK;
    },

    getValue: function(parse) {
      var value = this.isEmpty() ? "" : wysihtml5.quirks.getCorrectInnerHTML(this.element);
      
      if (parse) {
        value = this.parent.parse(value);
      }

      // Replace all "zero width no breaking space" chars
      // which are used as hacks to enable some functionalities
      // Also remove all CARET hacks that somehow got left
      value = wysihtml5.lang.string(value).replace(wysihtml5.INVISIBLE_SPACE).by("");

      return value;
    },

    setValue: function(html, parse) {
      if (parse) {
        html = this.parent.parse(html);
      }
      this.element.innerHTML = html;
    },

    show: function() {
      this.iframe.style.display = this._displayStyle || "";

      // Firefox needs this, otherwise contentEditable becomes uneditable
      this.disable();
      this.enable();
    },

    hide: function() {
      this._displayStyle = dom.getStyle("display").from(this.iframe);
      if (this._displayStyle === "none") {
        this._displayStyle = null;
      }
      this.iframe.style.display = "none";
    },

    disable: function() {
      this.element.removeAttribute("contentEditable");
      this.base();
    },

    enable: function() {
      this.element.setAttribute("contentEditable", "true");
      this.base();
    },

    focus: function(setToEnd) {
      // IE 8 fires the focus event after .focus()
      // This is needed by our simulate_placeholder.js to work
      // therefore we clear it ourselves this time
      if (wysihtml5.browser.doesAsyncFocus() && this.hasPlaceholderSet()) {
        this.clear();
      }
      
      this.base();
      
      var lastChild = this.element.lastChild;
      if (setToEnd && lastChild) {
        if (lastChild.nodeName === "BR") {
          this.selection.setBefore(this.element.lastChild);
        } else {
          this.selection.setAfter(this.element.lastChild);
        }
      }
    },

    getTextContent: function() {
      return dom.getTextContent(this.element);
    },

    hasPlaceholderSet: function() {
      return this.getTextContent() == this.textarea.element.getAttribute("placeholder");
    },

    isEmpty: function() {
      var innerHTML               = this.element.innerHTML,
          elementsWithVisualValue = "blockquote, ul, ol, img, embed, object, table, iframe, svg, video, audio, button, input, select, textarea";
      return innerHTML === ""              || 
             innerHTML === this.CARET_HACK ||
             this.hasPlaceholderSet()      ||
             (this.getTextContent() === "" && !this.element.querySelector(elementsWithVisualValue));
    },

    _initSandbox: function() {
      var that = this;
      
      this.sandbox = new dom.Sandbox(function() {
        that._create();
      }, {
        stylesheets:  this.config.stylesheets
      });
      this.iframe  = this.sandbox.getIframe();

      // Create hidden field which tells the server after submit, that the user used an wysiwyg editor
      var hiddenField = document.createElement("input");
      hiddenField.type   = "hidden";
      hiddenField.name   = "_wysihtml5_mode";
      hiddenField.value  = 1;

      // Store reference to current wysihtml5 instance on the textarea element
      var textareaElement = this.textarea.element;
      dom.insert(this.iframe).after(textareaElement);
      dom.insert(hiddenField).after(textareaElement);
    },

    _create: function() {
      var that = this;
      
      this.doc                = this.sandbox.getDocument();
      this.element            = this.doc.body;
      this.textarea           = this.parent.textarea;
      this.element.innerHTML  = this.textarea.getValue(true);
      this.enable();
      
      // Make sure our selection handler is ready
      this.selection = new wysihtml5.Selection(this.parent);
      
      // Make sure commands dispatcher is ready
      this.commands  = new wysihtml5.Commands(this.parent);

      dom.copyAttributes([
        "className", "spellcheck", "title", "lang", "dir", "accessKey"
      ]).from(this.textarea.element).to(this.element);
      
      dom.addClass(this.element, this.config.composerClassName);

      // Make the editor look like the original textarea, by syncing styles
      if (this.config.style) {
        this.style();
      }

      this.observe();

      var name = this.config.name;
      if (name) {
        dom.addClass(this.element, name);
        dom.addClass(this.iframe, name);
      }

      // Simulate html5 placeholder attribute on contentEditable element
      var placeholderText = typeof(this.config.placeholder) === "string"
        ? this.config.placeholder
        : this.textarea.element.getAttribute("placeholder");
      if (placeholderText) {
        dom.simulatePlaceholder(this.parent, this, placeholderText);
      }
      
      // Make sure that the browser avoids using inline styles whenever possible
      this.commands.exec("styleWithCSS", false);

      this._initAutoLinking();
      this._initObjectResizing();
      this._initUndoManager();

      // Simulate html5 autofocus on contentEditable element
      if (this.textarea.element.hasAttribute("autofocus") || document.querySelector(":focus") == this.textarea.element) {
        setTimeout(function() { that.focus(); }, 100);
      }

      wysihtml5.quirks.insertLineBreakOnReturn(this);

      // IE sometimes leaves a single paragraph, which can't be removed by the user
      if (!browser.clearsContentEditableCorrectly()) {
        wysihtml5.quirks.ensureProperClearing(this);
      }

      if (!browser.clearsListsInContentEditableCorrectly()) {
        wysihtml5.quirks.ensureProperClearingOfLists(this);
      }

      // Set up a sync that makes sure that textarea and editor have the same content
      if (this.initSync && this.config.sync) {
        this.initSync();
      }

      // Okay hide the textarea, we are ready to go
      this.textarea.hide();

      // Fire global (before-)load event
      this.parent.fire("beforeload").fire("load");
    },

    _initAutoLinking: function() {
      var that                           = this,
          supportsDisablingOfAutoLinking = browser.canDisableAutoLinking(),
          supportsAutoLinking            = browser.doesAutoLinkingInContentEditable();
      if (supportsDisablingOfAutoLinking) {
        this.commands.exec("autoUrlDetect", false);
      }

      if (!this.config.autoLink) {
        return;
      }

      // Only do the auto linking by ourselves when the browser doesn't support auto linking
      // OR when he supports auto linking but we were able to turn it off (IE9+)
      if (!supportsAutoLinking || (supportsAutoLinking && supportsDisablingOfAutoLinking)) {
        this.parent.observe("newword:composer", function() {
          that.selection.executeAndRestore(function(startContainer, endContainer) {
            dom.autoLink(endContainer.parentNode);
          });
        });
      }

      // Assuming we have the following:
      //  <a href="http://www.google.de">http://www.google.de</a>
      // If a user now changes the url in the innerHTML we want to make sure that
      // it's synchronized with the href attribute (as long as the innerHTML is still a url)
      var // Use a live NodeList to check whether there are any links in the document
          links           = this.sandbox.getDocument().getElementsByTagName("a"),
          // The autoLink helper method reveals a reg exp to detect correct urls
          urlRegExp       = dom.autoLink.URL_REG_EXP,
          getTextContent  = function(element) {
            var textContent = wysihtml5.lang.string(dom.getTextContent(element)).trim();
            if (textContent.substr(0, 4) === "www.") {
              textContent = "http://" + textContent;
            }
            return textContent;
          };

      dom.observe(this.element, "keydown", function(event) {
        if (!links.length) {
          return;
        }

        var selectedNode = that.selection.getSelectedNode(event.target.ownerDocument),
            link         = dom.getParentElement(selectedNode, { nodeName: "A" }, 4),
            textContent;

        if (!link) {
          return;
        }

        textContent = getTextContent(link);
        // keydown is fired before the actual content is changed
        // therefore we set a timeout to change the href
        setTimeout(function() {
          var newTextContent = getTextContent(link);
          if (newTextContent === textContent) {
            return;
          }

          // Only set href when new href looks like a valid url
          if (newTextContent.match(urlRegExp)) {
            link.setAttribute("href", newTextContent);
          }
        }, 0);
      });
    },

    _initObjectResizing: function() {
      var properties        = ["width", "height"],
          propertiesLength  = properties.length,
          element           = this.element;
      
      this.commands.exec("enableObjectResizing", this.config.allowObjectResizing);
      
      if (this.config.allowObjectResizing) {
         // IE sets inline styles after resizing objects
         // The following lines make sure that the width/height css properties
         // are copied over to the width/height attributes
        if (browser.supportsEvent("resizeend")) {
          dom.observe(element, "resizeend", function(event) {
            var target = event.target || event.srcElement,
                style  = target.style,
                i      = 0,
                property;
            for(; i<propertiesLength; i++) {
              property = properties[i];
              if (style[property]) {
                target.setAttribute(property, parseInt(style[property], 10));
                style[property] = "";
              }
            }
            // After resizing IE sometimes forgets to remove the old resize handles
            wysihtml5.quirks.redraw(element);
          });
        }
      } else {
        if (browser.supportsEvent("resizestart")) {
          dom.observe(element, "resizestart", function(event) { event.preventDefault(); });
        }
      }
    },
    
    _initUndoManager: function() {
      new wysihtml5.UndoManager(this.parent);
    }
  });
})(wysihtml5);(function(wysihtml5) {
  var dom             = wysihtml5.dom,
      doc             = document,
      win             = window,
      HOST_TEMPLATE   = doc.createElement("div"),
      /**
       * Styles to copy from textarea to the composer element
       */
      TEXT_FORMATTING = [
        "background-color",
        "color", "cursor",
        "font-family", "font-size", "font-style", "font-variant", "font-weight",
        "line-height", "letter-spacing",
        "text-align", "text-decoration", "text-indent", "text-rendering",
        "word-break", "word-wrap", "word-spacing"
      ],
      /**
       * Styles to copy from textarea to the iframe
       */
      BOX_FORMATTING = [
        "background-color",
        "border-collapse",
        "border-bottom-color", "border-bottom-style", "border-bottom-width",
        "border-left-color", "border-left-style", "border-left-width",
        "border-right-color", "border-right-style", "border-right-width",
        "border-top-color", "border-top-style", "border-top-width",
        "clear", "display", "float",
        "margin-bottom", "margin-left", "margin-right", "margin-top",
        "outline-color", "outline-offset", "outline-width", "outline-style",
        "padding-left", "padding-right", "padding-top", "padding-bottom",
        "position", "top", "left", "right", "bottom", "z-index",
        "vertical-align", "text-align",
        "-webkit-box-sizing", "-moz-box-sizing", "-ms-box-sizing", "box-sizing",
        "-webkit-box-shadow", "-moz-box-shadow", "-ms-box-shadow","box-shadow",
        "-webkit-border-top-right-radius", "-moz-border-radius-topright", "border-top-right-radius",
        "-webkit-border-bottom-right-radius", "-moz-border-radius-bottomright", "border-bottom-right-radius",
        "-webkit-border-bottom-left-radius", "-moz-border-radius-bottomleft", "border-bottom-left-radius",
        "-webkit-border-top-left-radius", "-moz-border-radius-topleft", "border-top-left-radius",
        "width", "height"
      ],
      /**
       * Styles to sync while the window gets resized
       */
      RESIZE_STYLE = [
        "width", "height",
        "top", "left", "right", "bottom"
      ],
      ADDITIONAL_CSS_RULES = [
        "html             { height: 100%; }",
        "body             { min-height: 100%; padding: 0; margin: 0; margin-top: -1px; padding-top: 1px; }",
        "._wysihtml5-temp { display: none; }",
        wysihtml5.browser.isGecko ?
          "body.placeholder { color: graytext !important; }" : 
          "body.placeholder { color: #a9a9a9 !important; }",
        "body[disabled]   { background-color: #eee !important; color: #999 !important; cursor: default !important; }",
        // Ensure that user see's broken images and can delete them
        "img:-moz-broken  { -moz-force-broken-image-icon: 1; height: 24px; width: 24px; }"
      ];
  
  /**
   * With "setActive" IE offers a smart way of focusing elements without scrolling them into view:
   * http://msdn.microsoft.com/en-us/library/ms536738(v=vs.85).aspx
   *
   * Other browsers need a more hacky way: (pssst don't tell my mama)
   * In order to prevent the element being scrolled into view when focusing it, we simply
   * move it out of the scrollable area, focus it, and reset it's position
   */
  var focusWithoutScrolling = function(element) {
    if (element.setActive) {
      // Following line could cause a js error when the textarea is invisible
      // See https://github.com/xing/wysihtml5/issues/9
      try { element.setActive(); } catch(e) {}
    } else {
      var elementStyle = element.style,
          originalScrollTop = doc.documentElement.scrollTop || doc.body.scrollTop,
          originalScrollLeft = doc.documentElement.scrollLeft || doc.body.scrollLeft,
          originalStyles = {
            position:         elementStyle.position,
            top:              elementStyle.top,
            left:             elementStyle.left,
            WebkitUserSelect: elementStyle.WebkitUserSelect
          };
      
      dom.setStyles({
        position:         "absolute",
        top:              "-99999px",
        left:             "-99999px",
        // Don't ask why but temporarily setting -webkit-user-select to none makes the whole thing performing smoother
        WebkitUserSelect: "none"
      }).on(element);
      
      element.focus();
      
      dom.setStyles(originalStyles).on(element);
      
      if (win.scrollTo) {
        // Some browser extensions unset this method to prevent annoyances
        // "Better PopUp Blocker" for Chrome http://code.google.com/p/betterpopupblocker/source/browse/trunk/blockStart.js#100
        // Issue: http://code.google.com/p/betterpopupblocker/issues/detail?id=1
        win.scrollTo(originalScrollLeft, originalScrollTop);
      }
    }
  };
  
  
  wysihtml5.views.Composer.prototype.style = function() {
    var that                  = this,
        originalActiveElement = doc.querySelector(":focus"),
        textareaElement       = this.textarea.element,
        hasPlaceholder        = textareaElement.hasAttribute("placeholder"),
        originalPlaceholder   = hasPlaceholder && textareaElement.getAttribute("placeholder");
    this.focusStylesHost      = this.focusStylesHost  || HOST_TEMPLATE.cloneNode(false);
    this.blurStylesHost       = this.blurStylesHost   || HOST_TEMPLATE.cloneNode(false);
  
    // Remove placeholder before copying (as the placeholder has an affect on the computed style)
    if (hasPlaceholder) {
      textareaElement.removeAttribute("placeholder");
    }
  
    if (textareaElement === originalActiveElement) {
      textareaElement.blur();
    }
  
    // --------- iframe styles (has to be set before editor styles, otherwise IE9 sets wrong fontFamily on blurStylesHost) ---------
    dom.copyStyles(BOX_FORMATTING).from(textareaElement).to(this.iframe).andTo(this.blurStylesHost);
  
    // --------- editor styles ---------
    dom.copyStyles(TEXT_FORMATTING).from(textareaElement).to(this.element).andTo(this.blurStylesHost);
  
    // --------- apply standard rules ---------
    dom.insertCSS(ADDITIONAL_CSS_RULES).into(this.element.ownerDocument);
  
    // --------- :focus styles ---------
    focusWithoutScrolling(textareaElement);
    dom.copyStyles(BOX_FORMATTING).from(textareaElement).to(this.focusStylesHost);
    dom.copyStyles(TEXT_FORMATTING).from(textareaElement).to(this.focusStylesHost);
  
    // Make sure that we don't change the display style of the iframe when copying styles oblur/onfocus
    // this is needed for when the change_view event is fired where the iframe is hidden and then
    // the blur event fires and re-displays it
    var boxFormattingStyles = wysihtml5.lang.array(BOX_FORMATTING).without(["display"]);
  
    // --------- restore focus ---------
    if (originalActiveElement) {
      originalActiveElement.focus();
    } else {
      textareaElement.blur();
    }
  
    // --------- restore placeholder ---------
    if (hasPlaceholder) {
      textareaElement.setAttribute("placeholder", originalPlaceholder);
    }
  
    // When copying styles, we only get the computed style which is never returned in percent unit
    // Therefore we've to recalculate style onresize
    if (!wysihtml5.browser.hasCurrentStyleProperty()) {
      dom.observe(win, "resize", function() {
        var originalDisplayStyle = dom.getStyle("display").from(textareaElement);
        textareaElement.style.display = "";
        dom.copyStyles(RESIZE_STYLE)
          .from(textareaElement)
          .to(that.iframe)
          .andTo(that.focusStylesHost)
          .andTo(that.blurStylesHost);
        textareaElement.style.display = originalDisplayStyle;
      });
    }
  
    // --------- Sync focus/blur styles ---------
    this.parent.observe("focus:composer", function() {
      dom.copyStyles(boxFormattingStyles) .from(that.focusStylesHost).to(that.iframe);
      dom.copyStyles(TEXT_FORMATTING)     .from(that.focusStylesHost).to(that.element);
    });

    this.parent.observe("blur:composer", function() {
      dom.copyStyles(boxFormattingStyles) .from(that.blurStylesHost).to(that.iframe);
      dom.copyStyles(TEXT_FORMATTING)     .from(that.blurStylesHost).to(that.element);
    });
  
    return this;
  };
})(wysihtml5);/**
 * Taking care of events
 *  - Simulating 'change' event on contentEditable element
 *  - Handling drag & drop logic
 *  - Catch paste events
 *  - Dispatch proprietary newword:composer event
 *  - Keyboard shortcuts
 */
(function(wysihtml5) {
  var dom       = wysihtml5.dom,
      browser   = wysihtml5.browser,
      /**
       * Map keyCodes to query commands
       */
      shortcuts = {
        "66": "bold",     // B
        "73": "italic",   // I
        "85": "underline" // U
      };
  
  wysihtml5.views.Composer.prototype.observe = function() {
    var that                = this,
        state               = this.getValue(),
        iframe              = this.sandbox.getIframe(),
        element             = this.element,
        focusBlurElement    = browser.supportsEventsInIframeCorrectly() ? element : this.sandbox.getWindow(),
        // Firefox < 3.5 doesn't support the drop event, instead it supports a so called "dragdrop" event which behaves almost the same
        pasteEvents         = browser.supportsEvent("drop") ? ["drop", "paste"] : ["dragdrop", "paste"];

    // --------- destroy:composer event ---------
    dom.observe(iframe, "DOMNodeRemoved", function() {
      clearInterval(domNodeRemovedInterval);
      that.parent.fire("destroy:composer");
    });

    // DOMNodeRemoved event is not supported in IE 8
    var domNodeRemovedInterval = setInterval(function() {
      if (!dom.contains(document.documentElement, iframe)) {
        clearInterval(domNodeRemovedInterval);
        that.parent.fire("destroy:composer");
      }
    }, 250);


    // --------- Focus & blur logic ---------
    dom.observe(focusBlurElement, "focus", function() {
      that.parent.fire("focus").fire("focus:composer");

      // Delay storing of state until all focus handler are fired
      // especially the one which resets the placeholder
      setTimeout(function() { state = that.getValue(); }, 0);
    });

    dom.observe(focusBlurElement, "blur", function() {
      if (state !== that.getValue()) {
        that.parent.fire("change").fire("change:composer");
      }
      that.parent.fire("blur").fire("blur:composer");
    });
    
    if (wysihtml5.browser.isIos()) {
      // When on iPad/iPhone/IPod after clicking outside of editor, the editor loses focus
      // but the UI still acts as if the editor has focus (blinking caret and onscreen keyboard visible)
      // We prevent that by focusing a temporary input element which immediately loses focus
      dom.observe(element, "blur", function() {
        var input = element.ownerDocument.createElement("input"),
            originalScrollTop = document.documentElement.scrollTop || document.body.scrollTop,
            originalScrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft;
        try {
          that.selection.insertNode(input);
        } catch(e) {
          element.appendChild(input);
        }
        input.focus();
        input.parentNode.removeChild(input);
        
        window.scrollTo(originalScrollLeft, originalScrollTop);
      });
    }

    // --------- Drag & Drop logic ---------
    dom.observe(element, "dragenter", function() {
      that.parent.fire("unset_placeholder");
    });

    if (browser.firesOnDropOnlyWhenOnDragOverIsCancelled()) {
      dom.observe(element, ["dragover", "dragenter"], function(event) {
        event.preventDefault();
      });
    }

    dom.observe(element, pasteEvents, function(event) {
      var dataTransfer = event.dataTransfer,
          data;

      if (dataTransfer && browser.supportsDataTransfer()) {
        data = dataTransfer.getData("text/html") || dataTransfer.getData("text/plain");
      }
      if (data) {
        element.focus();
        that.commands.exec("insertHTML", data);
        that.parent.fire("paste").fire("paste:composer");
        event.stopPropagation();
        event.preventDefault();
      } else {
        setTimeout(function() {
          that.parent.fire("paste").fire("paste:composer");
        }, 0);
      }
    });

    // --------- neword event ---------
    dom.observe(element, "keyup", function(event) {
      var keyCode = event.keyCode;
      if (keyCode === wysihtml5.SPACE_KEY || keyCode === wysihtml5.ENTER_KEY) {
        that.parent.fire("newword:composer");
      }
    });

    this.parent.observe("paste:composer", function() {
      setTimeout(function() { that.parent.fire("newword:composer"); }, 0);
    });

    // --------- Make sure that images are selected when clicking on them ---------
    if (!browser.canSelectImagesInContentEditable()) {
      dom.observe(element, "mousedown", function(event) {
        var target = event.target;
        if (target.nodeName === "IMG") {
          that.selection.selectNode(target);
          event.preventDefault();
        }
      });
    }
    
    // --------- Shortcut logic ---------
    dom.observe(element, "keydown", function(event) {
      var keyCode  = event.keyCode,
          command  = shortcuts[keyCode];
      if ((event.ctrlKey || event.metaKey) && command) {
        that.commands.exec(command);
        event.preventDefault();
      }
    });

    // --------- Make sure that when pressing backspace/delete on selected images deletes the image and it's anchor ---------
    dom.observe(element, "keydown", function(event) {
      var target  = that.selection.getSelectedNode(true),
          keyCode = event.keyCode,
          parent;
      if (target && target.nodeName === "IMG" && (keyCode === wysihtml5.BACKSPACE_KEY || keyCode === wysihtml5.DELETE_KEY)) { // 8 => backspace, 46 => delete
        parent = target.parentNode;
        // delete the <img>
        parent.removeChild(target);
        // and it's parent <a> too if it hasn't got any other child nodes
        if (parent.nodeName === "A" && !parent.firstChild) {
          parent.parentNode.removeChild(parent);
        }

        setTimeout(function() { wysihtml5.quirks.redraw(element); }, 0);
        event.preventDefault();
      }
    });

    // --------- Show url in tooltip when hovering links or images ---------
    var titlePrefixes = {
      IMG: "Image: ",
      A:   "Link: "
    };
    
    dom.observe(element, "mouseover", function(event) {
      var target   = event.target,
          nodeName = target.nodeName,
          title;
      if (nodeName !== "A" && nodeName !== "IMG") {
        return;
      }

      title = titlePrefixes[nodeName] + (target.getAttribute("href") || target.getAttribute("src"));
      target.setAttribute("title", title);
    });
  };
})(wysihtml5);/**
 * Class that takes care that the value of the composer and the textarea is always in sync
 */
(function(wysihtml5) {
  var INTERVAL = 400;
  
  wysihtml5.views.Synchronizer = Base.extend(
    /** @scope wysihtml5.views.Synchronizer.prototype */ {

    constructor: function(editor, textarea, composer) {
      this.editor   = editor;
      this.textarea = textarea;
      this.composer = composer;

      this._observe();
    },

    /**
     * Sync html from composer to textarea
     * Takes care of placeholders
     * @param {Boolean} shouldParseHtml Whether the html should be sanitized before inserting it into the textarea
     */
    fromComposerToTextarea: function(shouldParseHtml) {
      this.textarea.setValue(wysihtml5.lang.string(this.composer.getValue()).trim(), shouldParseHtml);
    },

    /**
     * Sync value of textarea to composer
     * Takes care of placeholders
     * @param {Boolean} shouldParseHtml Whether the html should be sanitized before inserting it into the composer
     */
    fromTextareaToComposer: function(shouldParseHtml) {
      var textareaValue = this.textarea.getValue();
      if (textareaValue) {
        this.composer.setValue(textareaValue, shouldParseHtml);
      } else {
        this.composer.clear();
        this.editor.fire("set_placeholder");
      }
    },

    /**
     * Invoke syncing based on view state
     * @param {Boolean} shouldParseHtml Whether the html should be sanitized before inserting it into the composer/textarea
     */
    sync: function(shouldParseHtml) {
      if (this.editor.currentView.name === "textarea") {
        this.fromTextareaToComposer(shouldParseHtml);
      } else {
        this.fromComposerToTextarea(shouldParseHtml);
      }
    },

    /**
     * Initializes interval-based syncing
     * also makes sure that on-submit the composer's content is synced with the textarea
     * immediately when the form gets submitted
     */
    _observe: function() {
      var interval,
          that          = this,
          form          = this.textarea.element.form,
          startInterval = function() {
            interval = setInterval(function() { that.fromComposerToTextarea(); }, INTERVAL);
          },
          stopInterval  = function() {
            clearInterval(interval);
            interval = null;
          };

      startInterval();

      if (form) {
        // If the textarea is in a form make sure that after onreset and onsubmit the composer
        // has the correct state
        wysihtml5.dom.observe(form, "submit", function() {
          that.sync(true);
        });
        wysihtml5.dom.observe(form, "reset", function() {
          setTimeout(function() { that.fromTextareaToComposer(); }, 0);
        });
      }

      this.editor.observe("change_view", function(view) {
        if (view === "composer" && !interval) {
          that.fromTextareaToComposer(true);
          startInterval();
        } else if (view === "textarea") {
          that.fromComposerToTextarea(true);
          stopInterval();
        }
      });

      this.editor.observe("destroy:composer", stopInterval);
    }
  });
})(wysihtml5);
wysihtml5.views.Textarea = wysihtml5.views.View.extend(
  /** @scope wysihtml5.views.Textarea.prototype */ {
  name: "textarea",
  
  constructor: function(parent, textareaElement, config) {
    this.base(parent, textareaElement, config);
    
    this._observe();
  },
  
  clear: function() {
    this.element.value = "";
  },
  
  getValue: function(parse) {
    var value = this.isEmpty() ? "" : this.element.value;
    if (parse) {
      value = this.parent.parse(value);
    }
    return value;
  },
  
  setValue: function(html, parse) {
    if (parse) {
      html = this.parent.parse(html);
    }
    this.element.value = html;
  },
  
  hasPlaceholderSet: function() {
    var supportsPlaceholder = wysihtml5.browser.supportsPlaceholderAttributeOn(this.element),
        placeholderText     = this.element.getAttribute("placeholder") || null,
        value               = this.element.value,
        isEmpty             = !value;
    return (supportsPlaceholder && isEmpty) || (value === placeholderText);
  },
  
  isEmpty: function() {
    return !wysihtml5.lang.string(this.element.value).trim() || this.hasPlaceholderSet();
  },
  
  _observe: function() {
    var element = this.element,
        parent  = this.parent,
        eventMapping = {
          focusin:  "focus",
          focusout: "blur"
        },
        /**
         * Calling focus() or blur() on an element doesn't synchronously trigger the attached focus/blur events
         * This is the case for focusin and focusout, so let's use them whenever possible, kkthxbai
         */
        events = wysihtml5.browser.supportsEvent("focusin") ? ["focusin", "focusout", "change"] : ["focus", "blur", "change"];
    
    parent.observe("beforeload", function() {
      wysihtml5.dom.observe(element, events, function(event) {
        var eventName = eventMapping[event.type] || event.type;
        parent.fire(eventName).fire(eventName + ":textarea");
      });
      
      wysihtml5.dom.observe(element, ["paste", "drop"], function() {
        setTimeout(function() { parent.fire("paste").fire("paste:textarea"); }, 0);
      });
    });
  }
});/**
 * Toolbar Dialog
 *
 * @param {Element} link The toolbar link which causes the dialog to show up
 * @param {Element} container The dialog container
 *
 * @example
 *    <!-- Toolbar link -->
 *    <a data-wysihtml5-command="insertImage">insert an image</a>
 *
 *    <!-- Dialog -->
 *    <div data-wysihtml5-dialog="insertImage" style="display: none;">
 *      <label>
 *        URL: <input data-wysihtml5-dialog-field="src" value="http://">
 *      </label>
 *      <label>
 *        Alternative text: <input data-wysihtml5-dialog-field="alt" value="">
 *      </label>
 *    </div>
 *
 *    <script>
 *      var dialog = new wysihtml5.toolbar.Dialog(
 *        document.querySelector("[data-wysihtml5-command='insertImage']"),
 *        document.querySelector("[data-wysihtml5-dialog='insertImage']")
 *      );
 *      dialog.observe("save", function(attributes) {
 *        // do something
 *      });
 *    </script>
 */
(function(wysihtml5) {
  var dom                     = wysihtml5.dom,
      CLASS_NAME_OPENED       = "wysihtml5-command-dialog-opened",
      SELECTOR_FORM_ELEMENTS  = "input, select, textarea",
      SELECTOR_FIELDS         = "[data-wysihtml5-dialog-field]",
      ATTRIBUTE_FIELDS        = "data-wysihtml5-dialog-field";
      
  
  wysihtml5.toolbar.Dialog = wysihtml5.lang.Dispatcher.extend(
    /** @scope wysihtml5.toolbar.Dialog.prototype */ {
    constructor: function(link, container) {
      this.link       = link;
      this.container  = container;
    },

    _observe: function() {
      if (this._observed) {
        return;
      }
      
      var that = this,
          callbackWrapper = function(event) {
            var attributes = that._serialize();
            if (attributes == that.elementToChange) {
              that.fire("edit", attributes);
            } else {
              that.fire("save", attributes);
            }
            that.hide();
            event.preventDefault();
            event.stopPropagation();
          };

      dom.observe(that.link, "click", function(event) {
        if (dom.hasClass(that.link, CLASS_NAME_OPENED)) {
          setTimeout(function() { that.hide(); }, 0);
        }
      });

      dom.observe(this.container, "keydown", function(event) {
        var keyCode = event.keyCode;
        if (keyCode === wysihtml5.ENTER_KEY) {
          callbackWrapper(event);
        }
        if (keyCode === wysihtml5.ESCAPE_KEY) {
          that.hide();
        }
      });

      dom.delegate(this.container, "[data-wysihtml5-dialog-action=save]", "click", callbackWrapper);

      dom.delegate(this.container, "[data-wysihtml5-dialog-action=cancel]", "click", function(event) {
        that.fire("cancel");
        that.hide();
        event.preventDefault();
        event.stopPropagation();
      });

      var formElements  = this.container.querySelectorAll(SELECTOR_FORM_ELEMENTS),
          i             = 0,
          length        = formElements.length,
          _clearInterval = function() { clearInterval(that.interval); };
      for (; i<length; i++) {
        dom.observe(formElements[i], "change", _clearInterval);
      }

      this._observed = true;
    },

    /**
     * Grabs all fields in the dialog and puts them in key=>value style in an object which
     * then gets returned
     */
    _serialize: function() {
      var data    = this.elementToChange || {},
          fields  = this.container.querySelectorAll(SELECTOR_FIELDS),
          length  = fields.length,
          i       = 0;
      for (; i<length; i++) {
        data[fields[i].getAttribute(ATTRIBUTE_FIELDS)] = fields[i].value;
      }
      return data;
    },

    /**
     * Takes the attributes of the "elementToChange"
     * and inserts them in their corresponding dialog input fields
     * 
     * Assume the "elementToChange" looks like this:
     *    <a href="http://www.google.com" target="_blank">foo</a>
     *
     * and we have the following dialog:
     *    <input type="text" data-wysihtml5-dialog-field="href" value="">
     *    <input type="text" data-wysihtml5-dialog-field="target" value="">
     * 
     * after calling _interpolate() the dialog will look like this
     *    <input type="text" data-wysihtml5-dialog-field="href" value="http://www.google.com">
     *    <input type="text" data-wysihtml5-dialog-field="target" value="_blank">
     *
     * Basically it adopted the attribute values into the corresponding input fields
     *
     */
    _interpolate: function(avoidHiddenFields) {
      var field,
          fieldName,
          newValue,
          focusedElement = document.querySelector(":focus"),
          fields         = this.container.querySelectorAll(SELECTOR_FIELDS),
          length         = fields.length,
          i              = 0;
      for (; i<length; i++) {
        field = fields[i];
        
        // Never change elements where the user is currently typing in
        if (field === focusedElement) {
          continue;
        }
        
        // Don't update hidden fields
        // See https://github.com/xing/wysihtml5/pull/14
        if (avoidHiddenFields && field.type === "hidden") {
          continue;
        }
        
        fieldName = field.getAttribute(ATTRIBUTE_FIELDS);
        newValue  = this.elementToChange ? (this.elementToChange[fieldName] || "") : field.defaultValue;
        field.value = newValue;
      }
    },

    /**
     * Show the dialog element
     */
    show: function(elementToChange) {
      var that        = this,
          firstField  = this.container.querySelector(SELECTOR_FORM_ELEMENTS);
      this.elementToChange = elementToChange;
      this._observe();
      this._interpolate();
      if (elementToChange) {
        this.interval = setInterval(function() { that._interpolate(true); }, 500);
      }
      dom.addClass(this.link, CLASS_NAME_OPENED);
      this.container.style.display = "";
      this.fire("show");
      if (firstField && !elementToChange) {
        try {
          firstField.focus();
        } catch(e) {}
      }
    },

    /**
     * Hide the dialog element
     */
    hide: function() {
      clearInterval(this.interval);
      this.elementToChange = null;
      dom.removeClass(this.link, CLASS_NAME_OPENED);
      this.container.style.display = "none";
      this.fire("hide");
    }
  });
})(wysihtml5);
/**
 * Converts speech-to-text and inserts this into the editor
 * As of now (2011/03/25) this only is supported in Chrome >= 11
 *
 * Note that it sends the recorded audio to the google speech recognition api:
 * http://stackoverflow.com/questions/4361826/does-chrome-have-buil-in-speech-recognition-for-input-type-text-x-webkit-speec
 *
 * Current HTML5 draft can be found here
 * http://lists.w3.org/Archives/Public/public-xg-htmlspeech/2011Feb/att-0020/api-draft.html
 * 
 * "Accessing Google Speech API Chrome 11"
 * http://mikepultz.com/2011/03/accessing-google-speech-api-chrome-11/
 */
(function(wysihtml5) {
  var dom = wysihtml5.dom;
  
  var linkStyles = {
    position: "relative"
  };
  
  var wrapperStyles = {
    left:     0,
    margin:   0,
    opacity:  0,
    overflow: "hidden",
    padding:  0,
    position: "absolute",
    top:      0,
    zIndex:   1
  };
  
  var inputStyles = {
    cursor:     "inherit",
    fontSize:   "50px",
    height:     "50px",
    marginTop:  "-25px",
    outline:    0,
    padding:    0,
    position:   "absolute",
    right:      "-4px",
    top:        "50%"
  };
  
  var inputAttributes = {
    "x-webkit-speech": "",
    "speech":          ""
  };
  
  wysihtml5.toolbar.Speech = function(parent, link) {
    var input = document.createElement("input");
    if (!wysihtml5.browser.supportsSpeechApiOn(input)) {
      link.style.display = "none";
      return;
    }
    
    var wrapper = document.createElement("div");
    
    wysihtml5.lang.object(wrapperStyles).merge({
      width:  link.offsetWidth  + "px",
      height: link.offsetHeight + "px"
    });
    
    dom.insert(input).into(wrapper);
    dom.insert(wrapper).into(link);
    
    dom.setStyles(inputStyles).on(input);
    dom.setAttributes(inputAttributes).on(input)
    
    dom.setStyles(wrapperStyles).on(wrapper);
    dom.setStyles(linkStyles).on(link);
    
    var eventName = "onwebkitspeechchange" in input ? "webkitspeechchange" : "speechchange";
    dom.observe(input, eventName, function() {
      parent.execCommand("insertText", input.value);
      input.value = "";
    });
    
    dom.observe(input, "click", function(event) {
      if (dom.hasClass(link, "wysihtml5-command-disabled")) {
        event.preventDefault();
      }
      
      event.stopPropagation();
    });
  };
})(wysihtml5);/**
 * Toolbar
 *
 * @param {Object} parent Reference to instance of Editor instance
 * @param {Element} container Reference to the toolbar container element
 *
 * @example
 *    <div id="toolbar">
 *      <a data-wysihtml5-command="createLink">insert link</a>
 *      <a data-wysihtml5-command="formatBlock" data-wysihtml5-command-value="h1">insert h1</a>
 *    </div>
 *
 *    <script>
 *      var toolbar = new wysihtml5.toolbar.Toolbar(editor, document.getElementById("toolbar"));
 *    </script>
 */
(function(wysihtml5) {
  var CLASS_NAME_COMMAND_DISABLED   = "wysihtml5-command-disabled",
      CLASS_NAME_COMMANDS_DISABLED  = "wysihtml5-commands-disabled",
      CLASS_NAME_COMMAND_ACTIVE     = "wysihtml5-command-active",
      dom                           = wysihtml5.dom;
  
  wysihtml5.toolbar.Toolbar = Base.extend(
    /** @scope wysihtml5.toolbar.Toolbar.prototype */ {
    constructor: function(editor, container) {
      this.editor     = editor;
      this.container  = typeof(container) === "string" ? document.getElementById(container) : container;
      this.composer   = editor.composer;

      this._getLinks("command");
      this._getLinks("action");

      this._observe();
      this.show();
      
      var speechInputLinks  = this.container.querySelectorAll("[data-wysihtml5-command=insertSpeech]"),
          length            = speechInputLinks.length,
          i                 = 0;
      for (; i<length; i++) {
        new wysihtml5.toolbar.Speech(this, speechInputLinks[i]);
      }
    },

    _getLinks: function(type) {
      var links   = this[type + "Links"] = wysihtml5.lang.array(this.container.querySelectorAll("a[data-wysihtml5-" + type + "]")).get(),
          length  = links.length,
          i       = 0,
          mapping = this[type + "Mapping"] = {},
          link,
          name,
          value,
          dialog;
      for (; i<length; i++) {
        link    = links[i];
        name    = link.getAttribute("data-wysihtml5-" + type);
        value   = link.getAttribute("data-wysihtml5-" + type + "-value");
        dialog  = this._getDialog(link, name);
        
        mapping[name + ":" + value] = {
          link:   link,
          name:   name,
          value:  value,
          dialog: dialog,
          state:  false
        };
      }
    },

    _getDialog: function(link, command) {
      var that          = this,
          dialogElement = this.container.querySelector("[data-wysihtml5-dialog='" + command + "']"),
          dialog,
          caretBookmark;
      
      if (dialogElement) {
        dialog = new wysihtml5.toolbar.Dialog(link, dialogElement);

        dialog.observe("show", function() {
          caretBookmark = that.composer.selection.getBookmark();

          that.editor.fire("show:dialog", { command: command, dialogContainer: dialogElement, commandLink: link });
        });

        dialog.observe("save", function(attributes) {
          if (caretBookmark) {
            that.composer.selection.setBookmark(caretBookmark);
          }
          that._execCommand(command, attributes);
          
          that.editor.fire("save:dialog", { command: command, dialogContainer: dialogElement, commandLink: link });
        });

        dialog.observe("cancel", function() {
          that.editor.focus(false);
          that.editor.fire("cancel:dialog", { command: command, dialogContainer: dialogElement, commandLink: link });
        });
      }
      return dialog;
    },

    /**
     * @example
     *    var toolbar = new wysihtml5.Toolbar();
     *    // Insert a <blockquote> element or wrap current selection in <blockquote>
     *    toolbar.execCommand("formatBlock", "blockquote");
     */
    execCommand: function(command, commandValue) {
      if (this.commandsDisabled) {
        return;
      }

      var commandObj = this.commandMapping[command + ":" + commandValue];

      // Show dialog when available
      if (commandObj && commandObj.dialog && !commandObj.state) {
        commandObj.dialog.show();
      } else {
        this._execCommand(command, commandValue);
      }
    },

    _execCommand: function(command, commandValue) {
      // Make sure that composer is focussed (false => don't move caret to the end)
      this.editor.focus(false);

      this.composer.commands.exec(command, commandValue);
      this._updateLinkStates();
    },

    execAction: function(action) {
      var editor = this.editor;
      switch(action) {
        case "change_view":
          if (editor.currentView === editor.textarea) {
            editor.fire("change_view", "composer");
          } else {
            editor.fire("change_view", "textarea");
          }
          break;
      }
    },

    _observe: function() {
      var that      = this,
          editor    = this.editor,
          container = this.container,
          links     = this.commandLinks.concat(this.actionLinks),
          length    = links.length,
          i         = 0;
      
      for (; i<length; i++) {
        // 'javascript:;' and unselectable=on Needed for IE, but done in all browsers to make sure that all get the same css applied
        // (you know, a:link { ... } doesn't match anchors with missing href attribute)
        dom.setAttributes({
          href:         "javascript:;",
          unselectable: "on"
        }).on(links[i]);
      }

      // Needed for opera
      dom.delegate(container, "[data-wysihtml5-command]", "mousedown", function(event) { event.preventDefault(); });
      
      dom.delegate(container, "[data-wysihtml5-command]", "click", function(event) {
        var link          = this,
            command       = link.getAttribute("data-wysihtml5-command"),
            commandValue  = link.getAttribute("data-wysihtml5-command-value");
        that.execCommand(command, commandValue);
        event.preventDefault();
      });

      dom.delegate(container, "[data-wysihtml5-action]", "click", function(event) {
        var action = this.getAttribute("data-wysihtml5-action");
        that.execAction(action);
        event.preventDefault();
      });

      editor.observe("focus:composer", function() {
        that.bookmark = null;
        clearInterval(that.interval);
        that.interval = setInterval(function() { that._updateLinkStates(); }, 500);
      });

      editor.observe("blur:composer", function() {
        clearInterval(that.interval);
      });

      editor.observe("destroy:composer", function() {
        clearInterval(that.interval);
      });

      editor.observe("change_view", function(currentView) {
        // Set timeout needed in order to let the blur event fire first
        setTimeout(function() {
          that.commandsDisabled = (currentView !== "composer");
          that._updateLinkStates();
          if (that.commandsDisabled) {
            dom.addClass(container, CLASS_NAME_COMMANDS_DISABLED);
          } else {
            dom.removeClass(container, CLASS_NAME_COMMANDS_DISABLED);
          }
        }, 0);
      });
    },

    _updateLinkStates: function() {
      var element           = this.composer.element,
          commandMapping    = this.commandMapping,
          i,
          state,
          command;
      // every millisecond counts... this is executed quite often
      for (i in commandMapping) {
        command = commandMapping[i];
        if (this.commandsDisabled) {
          state = false;
          dom.removeClass(command.link, CLASS_NAME_COMMAND_ACTIVE);
          if (command.dialog) {
            command.dialog.hide();
          }
        } else {
          state = this.composer.commands.state(command.name, command.value);
          if (wysihtml5.lang.object(state).isArray()) {
            // Grab first and only object/element in state array, otherwise convert state into boolean
            // to avoid showing a dialog for multiple selected elements which may have different attributes
            // eg. when two links with different href are selected, the state will be an array consisting of both link elements
            // but the dialog interface can only update one
            state = state.length === 1 ? state[0] : true;
          }
          dom.removeClass(command.link, CLASS_NAME_COMMAND_DISABLED);
        }

        if (command.state === state) {
          continue;
        }

        command.state = state;
        if (state) {
          dom.addClass(command.link, CLASS_NAME_COMMAND_ACTIVE);
          if (command.dialog) {
            if (typeof(state) === "object") {
              command.dialog.show(state);
            } else {
              command.dialog.hide();
            }
          }
        } else {
          dom.removeClass(command.link, CLASS_NAME_COMMAND_ACTIVE);
          if (command.dialog) {
            command.dialog.hide();
          }
        }
      }
    },

    show: function() {
      this.container.style.display = "";
    },

    hide: function() {
      this.container.style.display = "none";
    }
  });
  
})(wysihtml5);
/**
 * WYSIHTML5 Editor
 *
 * @param {Element} textareaElement Reference to the textarea which should be turned into a rich text interface
 * @param {Object} [config] See defaultConfig object below for explanation of each individual config option
 *
 * @events
 *    load
 *    beforeload (for internal use only)
 *    focus
 *    focus:composer
 *    focus:textarea
 *    blur
 *    blur:composer
 *    blur:textarea
 *    change
 *    change:composer
 *    change:textarea
 *    paste
 *    paste:composer
 *    paste:textarea
 *    newword:composer
 *    destroy:composer
 *    undo:composer
 *    redo:composer
 *    beforecommand:composer
 *    aftercommand:composer
 *    change_view
 */
(function(wysihtml5) {
  var undef;
  
  var defaultConfig = {
    // Give the editor a name, the name will also be set as class name on the iframe and on the iframe's body 
    name:                 undef,
    // Whether the editor should look like the textarea (by adopting styles)
    style:                true,
    // Id of the toolbar element, pass falsey value if you don't want any toolbar logic
    toolbar:              undef,
    // Whether urls, entered by the user should automatically become clickable-links
    autoLink:             true,
    // Object which includes parser rules to apply when html gets inserted via copy & paste
    // See parser_rules/*.js for examples
    parserRules:          { tags: { br: {}, span: {}, div: {}, p: {} }, classes: {} },
    // Parser method to use when the user inserts content via copy & paste
    parser:               wysihtml5.dom.parse,
    // Class name which should be set on the contentEditable element in the created sandbox iframe, can be styled via the 'stylesheets' option
    composerClassName:    "wysihtml5-editor",
    // Class name to add to the body when the wysihtml5 editor is supported
    bodyClassName:        "wysihtml5-supported",
    // Array (or single string) of stylesheet urls to be loaded in the editor's iframe
    stylesheets:          [],
    // Placeholder text to use, defaults to the placeholder attribute on the textarea element
    placeholderText:      undef,
    // Whether the composer should allow the user to manually resize images, tables etc.
    allowObjectResizing:  true,
    // Whether the rich text editor should be rendered on touch devices (wysihtml5 >= 0.3.0 comes with basic support for iOS 5)
    supportTouchDevices:  true
  };
  
  wysihtml5.Editor = wysihtml5.lang.Dispatcher.extend(
    /** @scope wysihtml5.Editor.prototype */ {
    constructor: function(textareaElement, config) {
      this.textareaElement  = typeof(textareaElement) === "string" ? document.getElementById(textareaElement) : textareaElement;
      this.config           = wysihtml5.lang.object({}).merge(defaultConfig).merge(config).get();
      this.textarea         = new wysihtml5.views.Textarea(this, this.textareaElement, this.config);
      this.currentView      = this.textarea;
      this._isCompatible    = wysihtml5.browser.supported();
      
      // Sort out unsupported/unwanted browsers here
      if (!this._isCompatible || (!this.config.supportTouchDevices && wysihtml5.browser.isTouchDevice())) {
        var that = this;
        setTimeout(function() { that.fire("beforeload").fire("load"); }, 0);
        return;
      }
      
      // Add class name to body, to indicate that the editor is supported
      wysihtml5.dom.addClass(document.body, this.config.bodyClassName);
      
      this.composer = new wysihtml5.views.Composer(this, this.textareaElement, this.config);
      this.currentView = this.composer;
      
      if (typeof(this.config.parser) === "function") {
        this._initParser();
      }
      
      this.observe("beforeload", function() {
        this.synchronizer = new wysihtml5.views.Synchronizer(this, this.textarea, this.composer);
        if (this.config.toolbar) {
          this.toolbar = new wysihtml5.toolbar.Toolbar(this, this.config.toolbar);
        }
      });
      
      try {
        console.log("Heya! This page is using wysihtml5 for rich text editing. Check out https://github.com/xing/wysihtml5");
      } catch(e) {}
    },
    
    isCompatible: function() {
      return this._isCompatible;
    },

    clear: function() {
      this.currentView.clear();
      return this;
    },

    getValue: function(parse) {
      return this.currentView.getValue(parse);
    },

    setValue: function(html, parse) {
      if (!html) {
        return this.clear();
      }
      this.currentView.setValue(html, parse);
      return this;
    },

    focus: function(setToEnd) {
      this.currentView.focus(setToEnd);
      return this;
    },

    /**
     * Deactivate editor (make it readonly)
     */
    disable: function() {
      this.currentView.disable();
      return this;
    },
    
    /**
     * Activate editor
     */
    enable: function() {
      this.currentView.enable();
      return this;
    },
    
    isEmpty: function() {
      return this.currentView.isEmpty();
    },
    
    hasPlaceholderSet: function() {
      return this.currentView.hasPlaceholderSet();
    },
    
    parse: function(htmlOrElement) {
      var returnValue = this.config.parser(htmlOrElement, this.config.parserRules, this.composer.sandbox.getDocument(), true);
      if (typeof(htmlOrElement) === "object") {
        wysihtml5.quirks.redraw(htmlOrElement);
      }
      return returnValue;
    },
    
    /**
     * Prepare html parser logic
     *  - Observes for paste and drop
     */
    _initParser: function() {
      this.observe("paste:composer", function() {
        var keepScrollPosition  = true,
            that                = this;
        that.composer.selection.executeAndRestore(function() {
          wysihtml5.quirks.cleanPastedHTML(that.composer.element);
          that.parse(that.composer.element);
        }, keepScrollPosition);
      });
      
      this.observe("paste:textarea", function() {
        var value   = this.textarea.getValue(),
            newValue;
        newValue = this.parse(value);
        this.textarea.setValue(newValue);
      });
    }
  });
})(wysihtml5);
