--- /dev/null
+/**
+ * Rangy, a cross-browser JavaScript range and selection library
+ * https://github.com/timdown/rangy
+ *
+ * Copyright 2015, Tim Down
+ * Licensed under the MIT license.
+ * Version: 1.3.0
+ * Build date: 10 May 2015
+ */
+
+(function(factory, root) {
+ if (typeof define == "function" && define.amd) {
+ // AMD. Register as an anonymous module.
+ define(factory);
+ } else if (typeof module != "undefined" && typeof exports == "object") {
+ // Node/CommonJS style
+ module.exports = factory();
+ } else {
+ // No AMD or CommonJS support so we place Rangy in (probably) the global variable
+ root.rangy = factory();
+ }
+})(function() {
+
+ var OBJECT = "object", FUNCTION = "function", UNDEFINED = "undefined";
+
+ // Minimal set of properties required for DOM Level 2 Range compliance. Comparison constants such as START_TO_START
+ // are omitted because ranges in KHTML do not have them but otherwise work perfectly well. See issue 113.
+ var domRangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
+ "commonAncestorContainer"];
+
+ // Minimal set of methods required for DOM Level 2 Range compliance
+ 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", "moveToElementText", "parentElement", "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);
+ }
+
+ function getBody(doc) {
+ return isHostObject(doc, "body") ? doc.body : doc.getElementsByTagName("body")[0];
+ }
+
+ var forEach = [].forEach ?
+ function(arr, func) {
+ arr.forEach(func);
+ } :
+ function(arr, func) {
+ for (var i = 0, len = arr.length; i < len; ++i) {
+ func(arr[i], i);
+ }
+ };
+
+ var modules = {};
+
+ var isBrowser = (typeof window != UNDEFINED && typeof document != UNDEFINED);
+
+ var util = {
+ isHostMethod: isHostMethod,
+ isHostObject: isHostObject,
+ isHostProperty: isHostProperty,
+ areHostMethods: areHostMethods,
+ areHostObjects: areHostObjects,
+ areHostProperties: areHostProperties,
+ isTextRange: isTextRange,
+ getBody: getBody,
+ forEach: forEach
+ };
+
+ var api = {
+ version: "1.3.0",
+ initialized: false,
+ isBrowser: isBrowser,
+ supported: true,
+ util: util,
+ features: {},
+ modules: modules,
+ config: {
+ alertOnFail: false,
+ alertOnWarn: false,
+ preferTextRange: false,
+ autoInitialize: (typeof rangyAutoInitialize == UNDEFINED) ? true : rangyAutoInitialize
+ }
+ };
+
+ function consoleLog(msg) {
+ if (typeof console != UNDEFINED && isHostMethod(console, "log")) {
+ console.log(msg);
+ }
+ }
+
+ function alertOrLog(msg, shouldAlert) {
+ if (isBrowser && shouldAlert) {
+ alert(msg);
+ } else {
+ consoleLog(msg);
+ }
+ }
+
+ function fail(reason) {
+ api.initialized = true;
+ api.supported = false;
+ alertOrLog("Rangy is not supported in this environment. Reason: " + reason, api.config.alertOnFail);
+ }
+
+ api.fail = fail;
+
+ function warn(msg) {
+ alertOrLog("Rangy warning: " + msg, api.config.alertOnWarn);
+ }
+
+ api.warn = warn;
+
+ // Add utility extend() method
+ var extend;
+ if ({}.hasOwnProperty) {
+ util.extend = extend = function(obj, props, deep) {
+ var o, p;
+ for (var i in props) {
+ if (props.hasOwnProperty(i)) {
+ o = obj[i];
+ p = props[i];
+ if (deep && o !== null && typeof o == "object" && p !== null && typeof p == "object") {
+ extend(o, p, true);
+ }
+ obj[i] = p;
+ }
+ }
+ // Special case for toString, which does not show up in for...in loops in IE <= 8
+ if (props.hasOwnProperty("toString")) {
+ obj.toString = props.toString;
+ }
+ return obj;
+ };
+
+ util.createOptions = function(optionsParam, defaults) {
+ var options = {};
+ extend(options, defaults);
+ if (optionsParam) {
+ extend(options, optionsParam);
+ }
+ return options;
+ };
+ } else {
+ fail("hasOwnProperty not supported");
+ }
+
+ // Test whether we're in a browser and bail out if not
+ if (!isBrowser) {
+ fail("Rangy can only run in a browser");
+ }
+
+ // Test whether Array.prototype.slice can be relied on for NodeLists and use an alternative toArray() if not
+ (function() {
+ var toArray;
+
+ if (isBrowser) {
+ var el = document.createElement("div");
+ el.appendChild(document.createElement("span"));
+ var slice = [].slice;
+ try {
+ if (slice.call(el.childNodes, 0)[0].nodeType == 1) {
+ toArray = function(arrayLike) {
+ return slice.call(arrayLike, 0);
+ };
+ }
+ } catch (e) {}
+ }
+
+ if (!toArray) {
+ toArray = function(arrayLike) {
+ var arr = [];
+ for (var i = 0, len = arrayLike.length; i < len; ++i) {
+ arr[i] = arrayLike[i];
+ }
+ return arr;
+ };
+ }
+
+ util.toArray = toArray;
+ })();
+
+ // Very simple event handler wrapper function that doesn't attempt to solve issues such as "this" handling or
+ // normalization of event properties
+ var addListener;
+ if (isBrowser) {
+ if (isHostMethod(document, "addEventListener")) {
+ addListener = function(obj, eventType, listener) {
+ obj.addEventListener(eventType, listener, false);
+ };
+ } else if (isHostMethod(document, "attachEvent")) {
+ addListener = function(obj, eventType, listener) {
+ obj.attachEvent("on" + eventType, listener);
+ };
+ } else {
+ fail("Document does not have required addEventListener or attachEvent method");
+ }
+
+ util.addListener = addListener;
+ }
+
+ var initListeners = [];
+
+ function getErrorDesc(ex) {
+ return ex.message || ex.description || String(ex);
+ }
+
+ // Initialization
+ function init() {
+ if (!isBrowser || 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;
+ }
+ }
+
+ var body = getBody(document);
+ if (!body || body.nodeName.toLowerCase() != "body") {
+ fail("No body element found");
+ return;
+ }
+
+ if (body && isHostMethod(body, "createTextRange")) {
+ testRange = body.createTextRange();
+ if (isTextRange(testRange)) {
+ implementsTextRange = true;
+ }
+ }
+
+ if (!implementsDomRange && !implementsTextRange) {
+ fail("Neither Range nor TextRange are available");
+ return;
+ }
+
+ api.initialized = true;
+ api.features = {
+ implementsDomRange: implementsDomRange,
+ implementsTextRange: implementsTextRange
+ };
+
+ // Initialize modules
+ var module, errorMessage;
+ for (var moduleName in modules) {
+ if ( (module = modules[moduleName]) instanceof Module ) {
+ module.init(module, api);
+ }
+ }
+
+ // Call init listeners
+ for (var i = 0, len = initListeners.length; i < len; ++i) {
+ try {
+ initListeners[i](api);
+ } catch (ex) {
+ errorMessage = "Rangy init listener threw an exception. Continuing. Detail: " + getErrorDesc(ex);
+ consoleLog(errorMessage);
+ }
+ }
+ }
+
+ function deprecationNotice(deprecated, replacement, module) {
+ if (module) {
+ deprecated += " in module " + module.name;
+ }
+ api.warn("DEPRECATED: " + deprecated + " is deprecated. Please use " +
+ replacement + " instead.");
+ }
+
+ function createAliasForDeprecatedMethod(owner, deprecated, replacement, module) {
+ owner[deprecated] = function() {
+ deprecationNotice(deprecated, replacement, module);
+ return owner[replacement].apply(owner, util.toArray(arguments));
+ };
+ }
+
+ util.deprecationNotice = deprecationNotice;
+ util.createAliasForDeprecatedMethod = createAliasForDeprecatedMethod;
+
+ // 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 shimListeners = [];
+
+ api.addShimListener = function(listener) {
+ shimListeners.push(listener);
+ };
+
+ function shim(win) {
+ win = win || window;
+ init();
+
+ // Notify listeners
+ for (var i = 0, len = shimListeners.length; i < len; ++i) {
+ shimListeners[i](win);
+ }
+ }
+
+ if (isBrowser) {
+ api.shim = api.createMissingNativeApi = shim;
+ createAliasForDeprecatedMethod(api, "createMissingNativeApi", "shim");
+ }
+
+ function Module(name, dependencies, initializer) {
+ this.name = name;
+ this.dependencies = dependencies;
+ this.initialized = false;
+ this.supported = false;
+ this.initializer = initializer;
+ }
+
+ Module.prototype = {
+ init: function() {
+ var requiredModuleNames = this.dependencies || [];
+ for (var i = 0, len = requiredModuleNames.length, requiredModule, moduleName; i < len; ++i) {
+ moduleName = requiredModuleNames[i];
+
+ requiredModule = modules[moduleName];
+ if (!requiredModule || !(requiredModule instanceof Module)) {
+ throw new Error("required module '" + moduleName + "' not found");
+ }
+
+ requiredModule.init();
+
+ if (!requiredModule.supported) {
+ throw new Error("required module '" + moduleName + "' not supported");
+ }
+ }
+
+ // Now run initializer
+ this.initializer(this);
+ },
+
+ fail: function(reason) {
+ this.initialized = true;
+ this.supported = false;
+ throw new Error(reason);
+ },
+
+ warn: function(msg) {
+ api.warn("Module " + this.name + ": " + msg);
+ },
+
+ deprecationNotice: function(deprecated, replacement) {
+ api.warn("DEPRECATED: " + deprecated + " in module " + this.name + " is deprecated. Please use " +
+ replacement + " instead");
+ },
+
+ createError: function(msg) {
+ return new Error("Error in Rangy " + this.name + " module: " + msg);
+ }
+ };
+
+ function createModule(name, dependencies, initFunc) {
+ var newModule = new Module(name, dependencies, function(module) {
+ if (!module.initialized) {
+ module.initialized = true;
+ try {
+ initFunc(api, module);
+ module.supported = true;
+ } catch (ex) {
+ var errorMessage = "Module '" + name + "' failed to load: " + getErrorDesc(ex);
+ consoleLog(errorMessage);
+ if (ex.stack) {
+ consoleLog(ex.stack);
+ }
+ }
+ }
+ });
+ modules[name] = newModule;
+ return newModule;
+ }
+
+ api.createModule = function(name) {
+ // Allow 2 or 3 arguments (second argument is an optional array of dependencies)
+ var initFunc, dependencies;
+ if (arguments.length == 2) {
+ initFunc = arguments[1];
+ dependencies = [];
+ } else {
+ initFunc = arguments[2];
+ dependencies = arguments[1];
+ }
+
+ var module = createModule(name, dependencies, initFunc);
+
+ // Initialize the module immediately if the core is already initialized
+ if (api.initialized && api.supported) {
+ module.init();
+ }
+ };
+
+ api.createCoreModule = function(name, dependencies, initFunc) {
+ createModule(name, dependencies, initFunc);
+ };
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // Ensure rangy.rangePrototype and rangy.selectionPrototype are available immediately
+
+ function RangePrototype() {}
+ api.RangePrototype = RangePrototype;
+ api.rangePrototype = new RangePrototype();
+
+ function SelectionPrototype() {}
+ api.selectionPrototype = new SelectionPrototype();
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // DOM utility methods used by Rangy
+ api.createCoreModule("DomUtil", [], function(api, module) {
+ var UNDEF = "undefined";
+ var util = api.util;
+ var getBody = util.getBody;
+
+ // 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) {
+ switch (node.nodeType) {
+ case 7:
+ case 10:
+ return 0;
+ case 3:
+ case 8:
+ return node.length;
+ default:
+ return node.childNodes.length;
+ }
+ }
+
+ 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 isOrIsAncestorOf(ancestor, descendant) {
+ return isAncestorOf(ancestor, descendant, true);
+ }
+
+ 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 isTextOrCommentNode(node) {
+ if (!node) {
+ return false;
+ }
+ var t = node.nodeType;
+ return t == 3 || t == 8 ; // Text 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, positionsToPreserve) {
+ var newNode = node.cloneNode(false);
+ newNode.deleteData(0, index);
+ node.deleteData(index, node.length - index);
+ insertAfter(newNode, node);
+
+ // Preserve positions
+ if (positionsToPreserve) {
+ for (var i = 0, position; position = positionsToPreserve[i++]; ) {
+ // Handle case where position was inside the portion of node after the split point
+ if (position.node == node && position.offset > index) {
+ position.node = newNode;
+ position.offset -= index;
+ }
+ // Handle the case where the position is a node offset within node's parent
+ else if (position.node == node.parentNode && position.offset > getNodeIndex(node)) {
+ ++position.offset;
+ }
+ }
+ }
+ 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 module.createError("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 module.createError("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 module.createError("getIframeDocument: 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 module.createError("getIframeWindow: No Window object found for iframe element");
+ }
+ }
+
+ // This looks bad. Is it worth it?
+ function isWindow(obj) {
+ return obj && util.isHostMethod(obj, "setTimeout") && util.isHostObject(obj, "document");
+ }
+
+ function getContentDocument(obj, module, methodName) {
+ var doc;
+
+ if (!obj) {
+ doc = document;
+ }
+
+ // Test if a DOM node has been passed and obtain a document object for it if so
+ else if (util.isHostProperty(obj, "nodeType")) {
+ doc = (obj.nodeType == 1 && obj.tagName.toLowerCase() == "iframe") ?
+ getIframeDocument(obj) : getDocument(obj);
+ }
+
+ // Test if the doc parameter appears to be a Window object
+ else if (isWindow(obj)) {
+ doc = obj.document;
+ }
+
+ if (!doc) {
+ throw module.createError(methodName + "(): Parameter must be a Window object or DOM node");
+ }
+
+ return doc;
+ }
+
+ 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 {
+ root = getCommonAncestor(nodeA, nodeB);
+ if (!root) {
+ throw new Error("comparePoints error: nodes have no common ancestor");
+ }
+
+ // Case 4: containers are siblings or descendants of siblings
+ 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 module.createError("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;
+ }
+ }
+ }
+ }
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // Test for IE's crash (IE 6/7) or exception (IE >= 8) when a reference to garbage-collected text node is queried
+ var crashyTextNodes = false;
+
+ function isBrokenNode(node) {
+ var n;
+ try {
+ n = node.parentNode;
+ return false;
+ } catch (e) {
+ return true;
+ }
+ }
+
+ (function() {
+ var el = document.createElement("b");
+ el.innerHTML = "1";
+ var textNode = el.firstChild;
+ el.innerHTML = "<br />";
+ crashyTextNodes = isBrokenNode(textNode);
+
+ api.features.crashyTextNodes = crashyTextNodes;
+ })();
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ function inspectNode(node) {
+ if (!node) {
+ return "[No node]";
+ }
+ if (crashyTextNodes && isBrokenNode(node)) {
+ return "[Broken node]";
+ }
+ if (isCharacterDataNode(node)) {
+ return '"' + node.data + '"';
+ }
+ if (node.nodeType == 1) {
+ var idAttr = node.id ? ' id="' + node.id + '"' : "";
+ return "<" + node.nodeName + idAttr + ">[index:" + getNodeIndex(node) + ",length:" + node.childNodes.length + "][" + (node.innerHTML || "[innerHTML not supported]").slice(0, 25) + "]";
+ }
+ return node.nodeName;
+ }
+
+ function fragmentFromNodeChildren(node) {
+ var fragment = getDocument(node).createDocumentFragment(), child;
+ while ( (child = node.firstChild) ) {
+ fragment.appendChild(child);
+ }
+ return fragment;
+ }
+
+ var getComputedStyleProperty;
+ if (typeof window.getComputedStyle != UNDEF) {
+ getComputedStyleProperty = function(el, propName) {
+ return getWindow(el).getComputedStyle(el, null)[propName];
+ };
+ } else if (typeof document.documentElement.currentStyle != UNDEF) {
+ getComputedStyleProperty = function(el, propName) {
+ return el.currentStyle ? el.currentStyle[propName] : "";
+ };
+ } else {
+ module.fail("No means of obtaining computed style properties found");
+ }
+
+ function createTestElement(doc, html, contentEditable) {
+ var body = getBody(doc);
+ var el = doc.createElement("div");
+ el.contentEditable = "" + !!contentEditable;
+ if (html) {
+ el.innerHTML = html;
+ }
+
+ // Insert the test element at the start of the body to prevent scrolling to the bottom in iOS (issue #292)
+ var bodyFirstChild = body.firstChild;
+ if (bodyFirstChild) {
+ body.insertBefore(el, bodyFirstChild);
+ } else {
+ body.appendChild(el);
+ }
+
+ return el;
+ }
+
+ function removeNode(node) {
+ return node.parentNode.removeChild(node);
+ }
+
+ 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);
+ }
+
+ function DomPosition(node, offset) {
+ this.node = node;
+ this.offset = offset;
+ }
+
+ DomPosition.prototype = {
+ equals: function(pos) {
+ return !!pos && this.node === pos.node && this.offset == pos.offset;
+ },
+
+ inspect: function() {
+ return "[DomPosition(" + inspectNode(this.node) + ":" + this.offset + ")]";
+ },
+
+ toString: function() {
+ return this.inspect();
+ }
+ };
+
+ 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,
+ INVALID_NODE_TYPE_ERR: 24
+ };
+
+ DOMException.prototype.toString = function() {
+ return this.message;
+ };
+
+ api.dom = {
+ arrayContains: arrayContains,
+ isHtmlNamespace: isHtmlNamespace,
+ parentElement: parentElement,
+ getNodeIndex: getNodeIndex,
+ getNodeLength: getNodeLength,
+ getCommonAncestor: getCommonAncestor,
+ isAncestorOf: isAncestorOf,
+ isOrIsAncestorOf: isOrIsAncestorOf,
+ getClosestAncestorIn: getClosestAncestorIn,
+ isCharacterDataNode: isCharacterDataNode,
+ isTextOrCommentNode: isTextOrCommentNode,
+ insertAfter: insertAfter,
+ splitDataNode: splitDataNode,
+ getDocument: getDocument,
+ getWindow: getWindow,
+ getIframeWindow: getIframeWindow,
+ getIframeDocument: getIframeDocument,
+ getBody: getBody,
+ isWindow: isWindow,
+ getContentDocument: getContentDocument,
+ getRootContainer: getRootContainer,
+ comparePoints: comparePoints,
+ isBrokenNode: isBrokenNode,
+ inspectNode: inspectNode,
+ getComputedStyleProperty: getComputedStyleProperty,
+ createTestElement: createTestElement,
+ removeNode: removeNode,
+ fragmentFromNodeChildren: fragmentFromNodeChildren,
+ createIterator: createIterator,
+ DomPosition: DomPosition
+ };
+
+ api.DOMException = DOMException;
+ });
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // Pure JavaScript implementation of DOM Range
+ api.createCoreModule("DomRange", ["DomUtil"], function(api, module) {
+ var dom = api.dom;
+ var util = api.util;
+ var DomPosition = dom.DomPosition;
+ var DOMException = api.DOMException;
+
+ var isCharacterDataNode = dom.isCharacterDataNode;
+ var getNodeIndex = dom.getNodeIndex;
+ var isOrIsAncestorOf = dom.isOrIsAncestorOf;
+ var getDocument = dom.getDocument;
+ var comparePoints = dom.comparePoints;
+ var splitDataNode = dom.splitDataNode;
+ var getClosestAncestorIn = dom.getClosestAncestorIn;
+ var getNodeLength = dom.getNodeLength;
+ var arrayContains = dom.arrayContains;
+ var getRootContainer = dom.getRootContainer;
+ var crashyTextNodes = api.features.crashyTextNodes;
+
+ var removeNode = dom.removeNode;
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // Utility functions
+
+ function isNonTextPartiallySelected(node, range) {
+ return (node.nodeType != 3) &&
+ (isOrIsAncestorOf(node, range.startContainer) || isOrIsAncestorOf(node, range.endContainer));
+ }
+
+ function getRangeDocument(range) {
+ return range.document || getDocument(range.startContainer);
+ }
+
+ function getRangeRoot(range) {
+ return getRootContainer(range.startContainer);
+ }
+
+ function getBoundaryBeforeNode(node) {
+ return new DomPosition(node.parentNode, getNodeIndex(node));
+ }
+
+ function getBoundaryAfterNode(node) {
+ return new DomPosition(node.parentNode, getNodeIndex(node) + 1);
+ }
+
+ function insertNodeAtPosition(node, n, o) {
+ var firstNodeInserted = node.nodeType == 11 ? node.firstChild : node;
+ if (isCharacterDataNode(n)) {
+ if (o == n.length) {
+ dom.insertAfter(node, n);
+ } else {
+ n.parentNode.insertBefore(node, o == 0 ? n : splitDataNode(n, o));
+ }
+ } else if (o >= n.childNodes.length) {
+ n.appendChild(node);
+ } else {
+ n.insertBefore(node, n.childNodes[o]);
+ }
+ return firstNodeInserted;
+ }
+
+ function rangesIntersect(rangeA, rangeB, touchingIsIntersecting) {
+ assertRangeValid(rangeA);
+ assertRangeValid(rangeB);
+
+ if (getRangeDocument(rangeB) != getRangeDocument(rangeA)) {
+ throw new DOMException("WRONG_DOCUMENT_ERR");
+ }
+
+ var startComparison = comparePoints(rangeA.startContainer, rangeA.startOffset, rangeB.endContainer, rangeB.endOffset),
+ endComparison = comparePoints(rangeA.endContainer, rangeA.endOffset, rangeB.startContainer, rangeB.startOffset);
+
+ return touchingIsIntersecting ? startComparison <= 0 && endComparison >= 0 : startComparison < 0 && endComparison > 0;
+ }
+
+ 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();
+ }
+
+ 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(); ) {
+ if (rangeIterator.isPartiallySelectedSubtree()) {
+ if (func(node) === false) {
+ iteratorState.stop = true;
+ return;
+ } else {
+ // 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.
+ subRangeIterator = rangeIterator.getSubtreeIterator();
+ iterateSubtree(subRangeIterator, func, iteratorState);
+ subRangeIterator.detach();
+ if (iteratorState.stop) {
+ return;
+ }
+ }
+ } else {
+ // The whole node is selected, so we can use efficient DOM iteration to iterate over the node and its
+ // descendants
+ 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();
+ } 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();
+ } else {
+ iterator.remove();
+ }
+ if (node.nodeType == 10) { // DocumentType
+ throw new DOMException("HIERARCHY_REQUEST_ERR");
+ }
+ frag.appendChild(node);
+ }
+ return frag;
+ }
+
+ function getNodesInRange(range, nodeTypes, filter) {
+ 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)) {
+ return;
+ }
+ if (filterExists && !filter(node)) {
+ return;
+ }
+ // Don't include a boundary container if it is a character data node and the range does not contain any
+ // of its character data. See issue 190.
+ var sc = range.startContainer;
+ if (node == sc && isCharacterDataNode(sc) && range.startOffset == sc.length) {
+ return;
+ }
+
+ var ec = range.endContainer;
+ if (node == ec && isCharacterDataNode(ec) && range.endOffset == 0) {
+ return;
+ }
+
+ 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)
+
+ 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 && isCharacterDataNode(this.sc)) {
+ this.isSingleCharacterDataNode = true;
+ this._first = this._last = this._next = this.sc;
+ } else {
+ this._first = this._next = (this.sc === root && !isCharacterDataNode(this.sc)) ?
+ this.sc.childNodes[this.so] : getClosestAncestorIn(this.sc, root, true);
+ this._last = (this.ec === root && !isCharacterDataNode(this.ec)) ?
+ this.ec.childNodes[this.eo - 1] : 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 (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 (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) {
+ removeNode(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(false);
+ } else {
+ subRange = new Range(getRangeDocument(this.range));
+ var current = this._current;
+ var startContainer = current, startOffset = 0, endContainer = current, endOffset = getNodeLength(current);
+
+ if (isOrIsAncestorOf(current, this.sc)) {
+ startContainer = this.sc;
+ startOffset = this.so;
+ }
+ if (isOrIsAncestorOf(current, this.ec)) {
+ endContainer = this.ec;
+ endOffset = this.eo;
+ }
+
+ updateBoundaries(subRange, startContainer, startOffset, endContainer, endOffset);
+ }
+ return new RangeIterator(subRange, this.clonePartiallySelectedTextNodes);
+ },
+
+ detach: function() {
+ this.range = this._current = this._next = this._first = this._last = this.sc = this.so = this.ec = this.eo = 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 (arrayContains(nodeTypes, t)) {
+ return n;
+ }
+ n = n.parentNode;
+ }
+ return null;
+ };
+ }
+
+ 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 DOMException("INVALID_NODE_TYPE_ERR");
+ }
+ }
+
+ function assertValidNodeType(node, invalidTypes) {
+ if (!arrayContains(invalidTypes, node.nodeType)) {
+ throw new DOMException("INVALID_NODE_TYPE_ERR");
+ }
+ }
+
+ function assertValidOffset(node, offset) {
+ if (offset < 0 || offset > (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 isValidOffset(node, offset) {
+ return offset <= (isCharacterDataNode(node) ? node.length : node.childNodes.length);
+ }
+
+ function isRangeValid(range) {
+ return (!!range.startContainer && !!range.endContainer &&
+ !(crashyTextNodes && (dom.isBrokenNode(range.startContainer) || dom.isBrokenNode(range.endContainer))) &&
+ getRootContainer(range.startContainer) == getRootContainer(range.endContainer) &&
+ isValidOffset(range.startContainer, range.startOffset) &&
+ isValidOffset(range.endContainer, range.endOffset));
+ }
+
+ function assertRangeValid(range) {
+ if (!isRangeValid(range)) {
+ throw new Error("Range error: Range is not valid. This usually happens after DOM mutation. Range: (" + 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 = 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 (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(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) {
+ var doc = getRangeDocument(this);
+ var el = doc.createElement("body");
+ el.innerHTML = fragmentStr;
+
+ return dom.fragmentFromNodeChildren(el);
+ };
+
+ function splitRangeBoundaries(range, positionsToPreserve) {
+ assertRangeValid(range);
+
+ var sc = range.startContainer, so = range.startOffset, ec = range.endContainer, eo = range.endOffset;
+ var startEndSame = (sc === ec);
+
+ if (isCharacterDataNode(ec) && eo > 0 && eo < ec.length) {
+ splitDataNode(ec, eo, positionsToPreserve);
+ }
+
+ if (isCharacterDataNode(sc) && so > 0 && so < sc.length) {
+ sc = splitDataNode(sc, so, positionsToPreserve);
+ if (startEndSame) {
+ eo -= so;
+ ec = sc;
+ } else if (ec == sc.parentNode && eo >= getNodeIndex(sc)) {
+ eo++;
+ }
+ so = 0;
+ }
+ range.setStartAndEnd(sc, so, ec, eo);
+ }
+
+ function rangeToHtml(range) {
+ assertRangeValid(range);
+ var container = range.commonAncestorContainer.parentNode.cloneNode(false);
+ container.appendChild( range.cloneContents() );
+ return container.innerHTML;
+ }
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ 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;
+
+ util.extend(api.rangePrototype, {
+ 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 comparePoints(nodeA, offsetA, nodeB, offsetB);
+ },
+
+ insertNode: function(node) {
+ assertRangeValid(this);
+ assertValidNodeType(node, insertableNodeTypes);
+ assertNodeNotReadOnly(this.startContainer);
+
+ if (isOrIsAncestorOf(node, this.startContainer)) {
+ 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 && 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 DOMException("INVALID_STATE_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 && isCharacterDataNode(sc)) {
+ return (sc.nodeType == 3 || sc.nodeType == 4) ? sc.data.slice(this.startOffset, this.endOffset) : "";
+ } else {
+ var textParts = [], iterator = new RangeIterator(this, true);
+ iterateSubtree(iterator, function(node) {
+ // Accept only text or CDATA nodes, not comments
+ if (node.nodeType == 3 || node.nodeType == 4) {
+ textParts.push(node.data);
+ }
+ });
+ iterator.detach();
+ return textParts.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 = 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 (comparePoints(node, offset, this.startContainer, this.startOffset) < 0) {
+ return -1;
+ } else if (comparePoints(node, offset, this.endContainer, this.endOffset) > 0) {
+ return 1;
+ }
+ return 0;
+ },
+
+ createContextualFragment: createContextualFragment,
+
+ toHtml: function() {
+ return rangeToHtml(this);
+ },
+
+ // 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);
+ if (getRootContainer(node) != getRangeRoot(this)) {
+ return false;
+ }
+
+ var parent = node.parentNode, offset = getNodeIndex(node);
+ if (!parent) {
+ return true;
+ }
+
+ var startComparison = comparePoints(parent, offset, this.endContainer, this.endOffset),
+ endComparison = 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 (comparePoints(node, offset, this.startContainer, this.startOffset) >= 0) &&
+ (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) {
+ return rangesIntersect(this, range, false);
+ },
+
+ // Sharing a boundary start-to-end or end-to-start does count as intersection.
+ intersectsOrTouchesRange: function(range) {
+ return rangesIntersect(this, range, true);
+ },
+
+ intersection: function(range) {
+ if (this.intersectsRange(range)) {
+ var startComparison = comparePoints(this.startContainer, this.startOffset, range.startContainer, range.startOffset),
+ endComparison = 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.intersectsOrTouchesRange(range)) {
+ var unionRange = this.cloneRange();
+ if (comparePoints(range.startContainer, range.startOffset, this.startContainer, this.startOffset) == -1) {
+ unionRange.setStart(range.startContainer, range.startOffset);
+ }
+ if (comparePoints(range.endContainer, range.endOffset, this.endContainer, this.endOffset) == 1) {
+ unionRange.setEnd(range.endContainer, range.endOffset);
+ }
+ return unionRange;
+ } else {
+ throw new DOMException("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, getNodeLength(node)) <= 0;
+ },
+
+ containsRange: function(range) {
+ var intersection = this.intersection(range);
+ return intersection !== null && range.equals(intersection);
+ },
+
+ 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);
+ return this.containsRange(nodeRange);
+ } else {
+ return this.containsNodeContents(node);
+ }
+ },
+
+ getNodes: function(nodeTypes, filter) {
+ assertRangeValid(this);
+ return getNodesInRange(this, nodeTypes, filter);
+ },
+
+ getDocument: function() {
+ return getRangeDocument(this);
+ },
+
+ collapseBefore: function(node) {
+ this.setEndBefore(node);
+ this.collapse(false);
+ },
+
+ collapseAfter: function(node) {
+ this.setStartAfter(node);
+ this.collapse(true);
+ },
+
+ getBookmark: function(containerNode) {
+ var doc = getRangeDocument(this);
+ var preSelectionRange = api.createRange(doc);
+ containerNode = containerNode || dom.getBody(doc);
+ preSelectionRange.selectNodeContents(containerNode);
+ var range = this.intersection(preSelectionRange);
+ var start = 0, end = 0;
+ if (range) {
+ preSelectionRange.setEnd(range.startContainer, range.startOffset);
+ start = preSelectionRange.toString().length;
+ end = start + range.toString().length;
+ }
+
+ return {
+ start: start,
+ end: end,
+ containerNode: containerNode
+ };
+ },
+
+ moveToBookmark: function(bookmark) {
+ var containerNode = bookmark.containerNode;
+ var charIndex = 0;
+ this.setStart(containerNode, 0);
+ this.collapse(true);
+ var nodeStack = [containerNode], node, foundStart = false, stop = false;
+ var nextCharIndex, i, childNodes;
+
+ while (!stop && (node = nodeStack.pop())) {
+ if (node.nodeType == 3) {
+ nextCharIndex = charIndex + node.length;
+ if (!foundStart && bookmark.start >= charIndex && bookmark.start <= nextCharIndex) {
+ this.setStart(node, bookmark.start - charIndex);
+ foundStart = true;
+ }
+ if (foundStart && bookmark.end >= charIndex && bookmark.end <= nextCharIndex) {
+ this.setEnd(node, bookmark.end - charIndex);
+ stop = true;
+ }
+ charIndex = nextCharIndex;
+ } else {
+ childNodes = node.childNodes;
+ i = childNodes.length;
+ while (i--) {
+ nodeStack.push(childNodes[i]);
+ }
+ }
+ }
+ },
+
+ getName: function() {
+ return "DomRange";
+ },
+
+ equals: function(range) {
+ return Range.rangesEqual(this, range);
+ },
+
+ isValid: function() {
+ return isRangeValid(this);
+ },
+
+ inspect: function() {
+ return inspect(this);
+ },
+
+ detach: function() {
+ // In DOM4, detach() is now a no-op.
+ }
+ });
+
+ 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 = 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) {
+ function createBeforeAfterNodeSetter(isBefore, isStart) {
+ return function(node) {
+ 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) || 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) || comparePoints(node, offset, sc, so) == -1) {
+ sc = node;
+ so = offset;
+ }
+ boundaryUpdater(range, sc, so, node, offset);
+ }
+ }
+
+ // Set up inheritance
+ var F = function() {};
+ F.prototype = api.rangePrototype;
+ constructor.prototype = new F();
+
+ util.extend(constructor.prototype, {
+ setStart: function(node, offset) {
+ assertNoDocTypeNotationEntityAncestor(node, true);
+ assertValidOffset(node, offset);
+
+ setRangeStart(this, node, offset);
+ },
+
+ setEnd: function(node, offset) {
+ assertNoDocTypeNotationEntityAncestor(node, true);
+ assertValidOffset(node, offset);
+
+ setRangeEnd(this, node, offset);
+ },
+
+ /**
+ * Convenience method to set a range's start and end boundaries. Overloaded as follows:
+ * - Two parameters (node, offset) creates a collapsed range at that position
+ * - Three parameters (node, startOffset, endOffset) creates a range contained with node starting at
+ * startOffset and ending at endOffset
+ * - Four parameters (startNode, startOffset, endNode, endOffset) creates a range starting at startOffset in
+ * startNode and ending at endOffset in endNode
+ */
+ setStartAndEnd: function() {
+ var args = arguments;
+ var sc = args[0], so = args[1], ec = sc, eo = so;
+
+ switch (args.length) {
+ case 3:
+ eo = args[2];
+ break;
+ case 4:
+ ec = args[2];
+ eo = args[3];
+ break;
+ }
+
+ boundaryUpdater(this, sc, so, ec, eo);
+ },
+
+ setBoundary: function(node, offset, isStart) {
+ this["set" + (isStart ? "Start" : "End")](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) {
+ assertNoDocTypeNotationEntityAncestor(node, true);
+
+ boundaryUpdater(this, node, 0, node, getNodeLength(node));
+ },
+
+ selectNode: function(node) {
+ 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;
+ },
+
+ splitBoundaries: function() {
+ splitRangeBoundaries(this);
+ },
+
+ splitBoundariesPreservingPositions: function(positionsToPreserve) {
+ splitRangeBoundaries(this, positionsToPreserve);
+ },
+
+ 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);
+ removeNode(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);
+ removeNode(sibling);
+ if (sc == ec) {
+ eo += so;
+ ec = sc;
+ } else if (ec == node.parentNode) {
+ var nodeIndex = getNodeIndex(node);
+ if (eo == nodeIndex) {
+ ec = node;
+ eo = nodeLength;
+ } else if (eo > nodeIndex) {
+ eo--;
+ }
+ }
+ }
+ };
+
+ var normalizeStart = true;
+ var sibling;
+
+ if (isCharacterDataNode(ec)) {
+ if (eo == ec.length) {
+ mergeForward(ec);
+ } else if (eo == 0) {
+ sibling = ec.previousSibling;
+ if (sibling && sibling.nodeType == ec.nodeType) {
+ eo = sibling.length;
+ if (sc == ec) {
+ normalizeStart = false;
+ }
+ sibling.appendData(ec.data);
+ removeNode(ec);
+ ec = sibling;
+ }
+ }
+ } else {
+ if (eo > 0) {
+ var endNode = ec.childNodes[eo - 1];
+ if (endNode && isCharacterDataNode(endNode)) {
+ mergeForward(endNode);
+ }
+ }
+ normalizeStart = !this.collapsed;
+ }
+
+ if (normalizeStart) {
+ if (isCharacterDataNode(sc)) {
+ if (so == 0) {
+ mergeBackward(sc);
+ } else if (so == sc.length) {
+ sibling = sc.nextSibling;
+ if (sibling && sibling.nodeType == sc.nodeType) {
+ if (ec == sibling) {
+ ec = sc;
+ eo += sc.length;
+ }
+ sc.appendData(sibling.data);
+ removeNode(sibling);
+ }
+ }
+ } else {
+ if (so < sc.childNodes.length) {
+ var startNode = sc.childNodes[so];
+ if (startNode && isCharacterDataNode(startNode)) {
+ mergeBackward(startNode);
+ }
+ }
+ }
+ } else {
+ sc = ec;
+ so = eo;
+ }
+
+ boundaryUpdater(this, sc, so, ec, eo);
+ },
+
+ collapseToPoint: function(node, offset) {
+ assertNoDocTypeNotationEntityAncestor(node, true);
+ assertValidOffset(node, offset);
+ this.setStartAndEnd(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) {
+ range.startContainer = startContainer;
+ range.startOffset = startOffset;
+ range.endContainer = endContainer;
+ range.endOffset = endOffset;
+ range.document = dom.getDocument(startContainer);
+
+ updateCollapsedAndCommonAncestor(range);
+ }
+
+ function Range(doc) {
+ this.startContainer = doc;
+ this.startOffset = 0;
+ this.endContainer = doc;
+ this.endOffset = 0;
+ this.document = doc;
+ updateCollapsedAndCommonAncestor(this);
+ }
+
+ createPrototypeRange(Range, updateBoundaries);
+
+ util.extend(Range, {
+ rangeProperties: rangeProperties,
+ RangeIterator: RangeIterator,
+ copyComparisonConstants: copyComparisonConstants,
+ createPrototypeRange: createPrototypeRange,
+ inspect: inspect,
+ toHtml: rangeToHtml,
+ getRangeDocument: getRangeDocument,
+ rangesEqual: function(r1, r2) {
+ return r1.startContainer === r2.startContainer &&
+ r1.startOffset === r2.startOffset &&
+ r1.endContainer === r2.endContainer &&
+ r1.endOffset === r2.endOffset;
+ }
+ });
+
+ api.DomRange = Range;
+ });
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // Wrappers for the browser's native DOM Range and/or TextRange implementation
+ api.createCoreModule("WrappedRange", ["DomRange"], function(api, module) {
+ var WrappedRange, WrappedTextRange;
+ var dom = api.dom;
+ var util = api.util;
+ var DomPosition = dom.DomPosition;
+ var DomRange = api.DomRange;
+ var getBody = dom.getBody;
+ var getContentDocument = dom.getContentDocument;
+ var isCharacterDataNode = dom.isCharacterDataNode;
+
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ if (api.features.implementsDomRange) {
+ // 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;
+
+ function updateRangeProperties(range) {
+ var i = rangeProperties.length, prop;
+ while (i--) {
+ prop = rangeProperties[i];
+ range[prop] = range.nativeRange[prop];
+ }
+ // Fix for broken collapsed property in IE 9.
+ range.collapsed = (range.startContainer === range.endContainer && range.startOffset === range.endOffset);
+ }
+
+ function updateNativeRange(range, startContainer, startOffset, endContainer, endOffset) {
+ var startMoved = (range.startContainer !== startContainer || range.startOffset != startOffset);
+ var endMoved = (range.endContainer !== endContainer || range.endOffset != endOffset);
+ var nativeRangeDifferent = !range.equals(range.nativeRange);
+
+ // Always set both boundaries for the benefit of IE9 (see issue 35)
+ if (startMoved || endMoved || nativeRangeDifferent) {
+ range.setEnd(endContainer, endOffset);
+ range.setStart(startContainer, startOffset);
+ }
+ }
+
+ var createBeforeAfterNodeSetter;
+
+ WrappedRange = function(range) {
+ if (!range) {
+ throw module.createError("WrappedRange: Range must be specified");
+ }
+ this.nativeRange = range;
+ updateRangeProperties(this);
+ };
+
+ DomRange.createPrototypeRange(WrappedRange, updateNativeRange);
+
+ rangeProto = WrappedRange.prototype;
+
+ rangeProto.selectNode = function(node) {
+ this.nativeRange.selectNode(node);
+ updateRangeProperties(this);
+ };
+
+ rangeProto.cloneContents = function() {
+ return this.nativeRange.cloneContents();
+ };
+
+ // Due to a long-standing Firefox bug that I have not been able to find a reliable way to detect,
+ // insertNode() is never delegated to the native range.
+
+ 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");
+ 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);
+
+ 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) {
+
+ 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");
+
+ /*--------------------------------------------------------------------------------------------------------*/
+
+ // Always use DOM4-compliant selectNodeContents implementation: it's simpler and less code than testing
+ // whether the native implementation can be trusted
+ rangeProto.selectNodeContents = function(node) {
+ this.setStartAndEnd(node, 0, dom.getNodeLength(node));
+ };
+
+ /*--------------------------------------------------------------------------------------------------------*/
+
+ // Test for and correct WebKit bug that has the behaviour 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 IE deleteContents() and extractContents() bug and correct it. See issue 107.
+
+ var el = document.createElement("div");
+ el.innerHTML = "123";
+ var textNode = el.firstChild;
+ var body = getBody(document);
+ body.appendChild(el);
+
+ range.setStart(textNode, 1);
+ range.setEnd(textNode, 2);
+ range.deleteContents();
+
+ if (textNode.data == "13") {
+ // Behaviour is correct per DOM4 Range so wrap the browser's implementation of deleteContents() and
+ // extractContents()
+ rangeProto.deleteContents = function() {
+ this.nativeRange.deleteContents();
+ updateRangeProperties(this);
+ };
+
+ rangeProto.extractContents = function() {
+ var frag = this.nativeRange.extractContents();
+ updateRangeProperties(this);
+ return frag;
+ };
+ } else {
+ }
+
+ body.removeChild(el);
+ body = null;
+
+ /*--------------------------------------------------------------------------------------------------------*/
+
+ // Test for existence of createContextualFragment and delegate to it if it exists
+ if (util.isHostMethod(range, "createContextualFragment")) {
+ rangeProto.createContextualFragment = function(fragmentStr) {
+ return this.nativeRange.createContextualFragment(fragmentStr);
+ };
+ }
+
+ /*--------------------------------------------------------------------------------------------------------*/
+
+ // Clean up
+ getBody(document).removeChild(testTextNode);
+
+ rangeProto.getName = function() {
+ return "WrappedRange";
+ };
+
+ api.WrappedRange = WrappedRange;
+
+ api.createNativeRange = function(doc) {
+ doc = getContentDocument(doc, module, "createNativeRange");
+ return doc.createRange();
+ };
+ })();
+ }
+
+ if (api.features.implementsTextRange) {
+ /*
+ 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)
+ */
+ var getTextRangeContainerElement = function(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);
+ };
+
+ var textRangeIsCollapsed = function(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.
+ var getTextRangeBoundaryPosition = function(textRange, wholeRangeContainerElement, isStart, isCollapsed, startInfo) {
+ 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
+ if (!dom.isOrIsAncestorOf(wholeRangeContainerElement, containerElement)) {
+ 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) {
+ var pos = new DomPosition(containerElement.parentNode, dom.getNodeIndex(containerElement));
+ return {
+ boundaryPosition: pos,
+ nodeInfo: {
+ nodeIndex: pos.offset,
+ containerElement: pos.node
+ }
+ };
+ }
+
+ var workingNode = dom.getDocument(containerElement).createElement("span");
+
+ // Workaround for HTML5 Shiv's insane violation of document.createElement(). See Rangy issue 104 and HTML5
+ // Shiv issue 64: https://github.com/aFarkas/html5shiv/issues/64
+ if (workingNode.parentNode) {
+ dom.removeNode(workingNode);
+ }
+
+ var comparison, workingComparisonType = isStart ? "StartToStart" : "StartToEnd";
+ var previousNode, nextNode, boundaryPosition, boundaryNode;
+ var start = (startInfo && startInfo.containerElement == containerElement) ? startInfo.nodeIndex : 0;
+ var childNodeCount = containerElement.childNodes.length;
+ var end = childNodeCount;
+
+ // Check end first. Code within the loop assumes that the endth child node of the container is definitely
+ // after the range boundary.
+ var nodeIndex = end;
+
+ while (true) {
+ if (nodeIndex == childNodeCount) {
+ containerElement.appendChild(workingNode);
+ } else {
+ containerElement.insertBefore(workingNode, containerElement.childNodes[nodeIndex]);
+ }
+ workingRange.moveToElementText(workingNode);
+ comparison = workingRange.compareEndPoints(workingComparisonType, textRange);
+ if (comparison == 0 || start == end) {
+ break;
+ } else if (comparison == -1) {
+ if (end == start + 1) {
+ // We know the endth child node is after the range boundary, so we must be done.
+ break;
+ } else {
+ start = nodeIndex;
+ }
+ } else {
+ end = (end == start + 1) ? start : nodeIndex;
+ }
+ nodeIndex = Math.floor((start + end) / 2);
+ containerElement.removeChild(workingNode);
+ }
+
+
+ // 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 && 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 rendered 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 approach used 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 && isCharacterDataNode(nextNode)) {
+ boundaryPosition = new DomPosition(nextNode, 0);
+ } else if (previousNode && isCharacterDataNode(previousNode)) {
+ boundaryPosition = new DomPosition(previousNode, previousNode.data.length);
+ } else {
+ boundaryPosition = new DomPosition(containerElement, dom.getNodeIndex(workingNode));
+ }
+ }
+
+ // Clean up
+ dom.removeNode(workingNode);
+
+ return {
+ boundaryPosition: boundaryPosition,
+ nodeInfo: {
+ nodeIndex: nodeIndex,
+ containerElement: containerElement
+ }
+ };
+ };
+
+ // 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/)
+ var createBoundaryTextRange = function(boundaryPosition, isStart) {
+ var boundaryNode, boundaryParent, boundaryOffset = boundaryPosition.offset;
+ var doc = dom.getDocument(boundaryPosition.node);
+ var workingNode, childNodes, workingRange = getBody(doc).createTextRange();
+ var nodeIsDataNode = 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
+ 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;
+ };
+
+ /*------------------------------------------------------------------------------------------------------------*/
+
+ // This is a wrapper around a TextRange, providing full DOM Range functionality using rangy's DomRange as a
+ // prototype
+
+ WrappedTextRange = function(textRange) {
+ this.textRange = textRange;
+ this.refresh();
+ };
+
+ WrappedTextRange.prototype = new DomRange(document);
+
+ WrappedTextRange.prototype.refresh = function() {
+ var start, end, startBoundary;
+
+ // 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).boundaryPosition;
+ } else {
+ startBoundary = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, true, false);
+ start = startBoundary.boundaryPosition;
+
+ // An optimization used here is that if the start and end boundaries have the same parent element, the
+ // search scope for the end boundary can be limited to exclude the portion of the element that precedes
+ // the start boundary
+ end = getTextRangeBoundaryPosition(this.textRange, rangeContainerElement, false, false,
+ startBoundary.nodeInfo).boundaryPosition;
+ }
+
+ this.setStart(start.node, start.offset);
+ this.setEnd(end.node, end.offset);
+ };
+
+ WrappedTextRange.prototype.getName = function() {
+ return "WrappedTextRange";
+ };
+
+ DomRange.copyComparisonConstants(WrappedTextRange);
+
+ var rangeToTextRange = function(range) {
+ if (range.collapsed) {
+ 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 = getBody( DomRange.getRangeDocument(range) ).createTextRange();
+ textRange.setEndPoint("StartToStart", startRange);
+ textRange.setEndPoint("EndToEnd", endRange);
+ return textRange;
+ }
+ };
+
+ WrappedTextRange.rangeToTextRange = rangeToTextRange;
+
+ WrappedTextRange.prototype.toTextRange = function() {
+ return rangeToTextRange(this);
+ };
+
+ api.WrappedTextRange = WrappedTextRange;
+
+ // IE 9 and above have both implementations and Rangy makes both available. The next few lines sets which
+ // implementation to use by default.
+ if (!api.features.implementsDomRange || api.config.preferTextRange) {
+ // Add WrappedTextRange as the Range property of the global object to allow expression like Range.END_TO_END to work
+ var globalObj = (function(f) { return f("return this;")(); })(Function);
+ if (typeof globalObj.Range == "undefined") {
+ globalObj.Range = WrappedTextRange;
+ }
+
+ api.createNativeRange = function(doc) {
+ doc = getContentDocument(doc, module, "createNativeRange");
+ return getBody(doc).createTextRange();
+ };
+
+ api.WrappedRange = WrappedTextRange;
+ }
+ }
+
+ api.createRange = function(doc) {
+ doc = getContentDocument(doc, module, "createRange");
+ return new api.WrappedRange(api.createNativeRange(doc));
+ };
+
+ api.createRangyRange = function(doc) {
+ doc = getContentDocument(doc, module, "createRangyRange");
+ return new DomRange(doc);
+ };
+
+ util.createAliasForDeprecatedMethod(api, "createIframeRange", "createRange");
+ util.createAliasForDeprecatedMethod(api, "createIframeRangyRange", "createRangyRange");
+
+ api.addShimListener(function(win) {
+ var doc = win.document;
+ if (typeof doc.createRange == "undefined") {
+ doc.createRange = function() {
+ return api.createRange(doc);
+ };
+ }
+ doc = win = null;
+ });
+ });
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // This module creates a selection object wrapper that conforms as closely as possible to the Selection specification
+ // in the HTML Editing spec (http://dvcs.w3.org/hg/editing/raw-file/tip/editing.html#selections)
+ api.createCoreModule("WrappedSelection", ["DomRange", "WrappedRange"], function(api, module) {
+ api.config.checkSelectionRanges = true;
+
+ var BOOLEAN = "boolean";
+ var NUMBER = "number";
+ var dom = api.dom;
+ var util = api.util;
+ var isHostMethod = util.isHostMethod;
+ var DomRange = api.DomRange;
+ var WrappedRange = api.WrappedRange;
+ var DOMException = api.DOMException;
+ var DomPosition = dom.DomPosition;
+ var getNativeSelection;
+ var selectionIsCollapsed;
+ var features = api.features;
+ var CONTROL = "Control";
+ var getDocument = dom.getDocument;
+ var getBody = dom.getBody;
+ var rangesEqual = DomRange.rangesEqual;
+
+
+ // Utility function to support direction parameters in the API that may be a string ("backward", "backwards",
+ // "forward" or "forwards") or a Boolean (true for backwards).
+ function isDirectionBackward(dir) {
+ return (typeof dir == "string") ? /^backward(s)?$/i.test(dir) : !!dir;
+ }
+
+ function getWindow(win, methodName) {
+ if (!win) {
+ return window;
+ } else if (dom.isWindow(win)) {
+ return win;
+ } else if (win instanceof WrappedSelection) {
+ return win.win;
+ } else {
+ var doc = dom.getContentDocument(win, module, methodName);
+ return dom.getWindow(doc);
+ }
+ }
+
+ function getWinSelection(winParam) {
+ return getWindow(winParam, "getWinSelection").getSelection();
+ }
+
+ function getDocSelection(winParam) {
+ return getWindow(winParam, "getDocSelection").document.selection;
+ }
+
+ function winSelectionIsBackward(sel) {
+ var backward = false;
+ if (sel.anchorNode) {
+ backward = (dom.comparePoints(sel.anchorNode, sel.anchorOffset, sel.focusNode, sel.focusOffset) == 1);
+ }
+ return backward;
+ }
+
+ // Test for the Range/TextRange and Selection features required
+ // Test for ability to retrieve selection
+ var implementsWinGetSelection = isHostMethod(window, "getSelection"),
+ implementsDocSelection = util.isHostObject(document, "selection");
+
+ features.implementsWinGetSelection = implementsWinGetSelection;
+ features.implementsDocSelection = implementsDocSelection;
+
+ var useDocumentSelection = implementsDocSelection && (!implementsWinGetSelection || api.config.preferTextRange);
+
+ if (useDocumentSelection) {
+ getNativeSelection = getDocSelection;
+ api.isSelectionValid = function(winParam) {
+ var doc = getWindow(winParam, "isSelectionValid").document, nativeSel = doc.selection;
+
+ // Check whether the selection TextRange is actually contained within the correct document
+ return (nativeSel.type != "None" || getDocument(nativeSel.createRange().parentElement()) == doc);
+ };
+ } else if (implementsWinGetSelection) {
+ getNativeSelection = getWinSelection;
+ api.isSelectionValid = function() {
+ return true;
+ };
+ } else {
+ module.fail("Neither document.selection or window.getSelection() detected.");
+ return false;
+ }
+
+ api.getNativeSelection = getNativeSelection;
+
+ var testSelection = getNativeSelection();
+
+ // In Firefox, the selection is null in an iframe with display: none. See issue #138.
+ if (!testSelection) {
+ module.fail("Native selection was null (possibly issue 138?)");
+ return false;
+ }
+
+ var testRange = api.createNativeRange(document);
+ var body = getBody(document);
+
+ // Obtaining a range from a selection
+ var selectionHasAnchorAndFocus = util.areHostProperties(testSelection,
+ ["anchorNode", "focusNode", "anchorOffset", "focusOffset"]);
+
+ features.selectionHasAnchorAndFocus = selectionHasAnchorAndFocus;
+
+ // Test for existence of native selection extend() method
+ var selectionHasExtend = isHostMethod(testSelection, "extend");
+ features.selectionHasExtend = selectionHasExtend;
+
+ // Test if rangeCount exists
+ var selectionHasRangeCount = (typeof testSelection.rangeCount == NUMBER);
+ features.selectionHasRangeCount = selectionHasRangeCount;
+
+ var selectionSupportsMultipleRanges = false;
+ var collapsedNonEditableSelectionsSupported = true;
+
+ var addRangeBackwardToNative = selectionHasExtend ?
+ function(nativeSelection, range) {
+ var doc = DomRange.getRangeDocument(range);
+ var endRange = api.createRange(doc);
+ endRange.collapseToPoint(range.endContainer, range.endOffset);
+ nativeSelection.addRange(getNativeRange(endRange));
+ nativeSelection.extend(range.startContainer, range.startOffset);
+ } : null;
+
+ if (util.areHostMethods(testSelection, ["addRange", "getRangeAt", "removeAllRanges"]) &&
+ typeof testSelection.rangeCount == NUMBER && features.implementsDomRange) {
+
+ (function() {
+ // Previously an iframe was used but this caused problems in some circumstances in IE, so tests are
+ // performed on the current document's selection. See issue 109.
+
+ // Note also that if a selection previously existed, it is wiped and later restored by these tests. This
+ // will result in the selection direction begin reversed if the original selection was backwards and the
+ // browser does not support setting backwards selections (Internet Explorer, I'm looking at you).
+ var sel = window.getSelection();
+ if (sel) {
+ // Store the current selection
+ var originalSelectionRangeCount = sel.rangeCount;
+ var selectionHasMultipleRanges = (originalSelectionRangeCount > 1);
+ var originalSelectionRanges = [];
+ var originalSelectionBackward = winSelectionIsBackward(sel);
+ for (var i = 0; i < originalSelectionRangeCount; ++i) {
+ originalSelectionRanges[i] = sel.getRangeAt(i);
+ }
+
+ // Create some test elements
+ var testEl = dom.createTestElement(document, "", false);
+ var textNode = testEl.appendChild( document.createTextNode("\u00a0\u00a0\u00a0") );
+
+ // Test whether the native selection will allow a collapsed selection within a non-editable element
+ var r1 = document.createRange();
+
+ r1.setStart(textNode, 1);
+ r1.collapse(true);
+ sel.removeAllRanges();
+ sel.addRange(r1);
+ collapsedNonEditableSelectionsSupported = (sel.rangeCount == 1);
+ sel.removeAllRanges();
+
+ // Test whether the native selection is capable of supporting multiple ranges.
+ if (!selectionHasMultipleRanges) {
+ // Doing the original feature test here in Chrome 36 (and presumably later versions) prints a
+ // console error of "Discontiguous selection is not supported." that cannot be suppressed. There's
+ // nothing we can do about this while retaining the feature test so we have to resort to a browser
+ // sniff. I'm not happy about it. See
+ // https://code.google.com/p/chromium/issues/detail?id=399791
+ var chromeMatch = window.navigator.appVersion.match(/Chrome\/(.*?) /);
+ if (chromeMatch && parseInt(chromeMatch[1]) >= 36) {
+ selectionSupportsMultipleRanges = false;
+ } else {
+ var r2 = r1.cloneRange();
+ r1.setStart(textNode, 0);
+ r2.setEnd(textNode, 3);
+ r2.setStart(textNode, 2);
+ sel.addRange(r1);
+ sel.addRange(r2);
+ selectionSupportsMultipleRanges = (sel.rangeCount == 2);
+ }
+ }
+
+ // Clean up
+ dom.removeNode(testEl);
+ sel.removeAllRanges();
+
+ for (i = 0; i < originalSelectionRangeCount; ++i) {
+ if (i == 0 && originalSelectionBackward) {
+ if (addRangeBackwardToNative) {
+ addRangeBackwardToNative(sel, originalSelectionRanges[i]);
+ } else {
+ api.warn("Rangy initialization: original selection was backwards but selection has been restored forwards because the browser does not support Selection.extend");
+ sel.addRange(originalSelectionRanges[i]);
+ }
+ } else {
+ sel.addRange(originalSelectionRanges[i]);
+ }
+ }
+ }
+ })();
+ }
+
+ features.selectionSupportsMultipleRanges = selectionSupportsMultipleRanges;
+ features.collapsedNonEditableSelectionsSupported = collapsedNonEditableSelectionsSupported;
+
+ // ControlRanges
+ var implementsControlRange = false, testControlRange;
+
+ if (body && isHostMethod(body, "createControlRange")) {
+ testControlRange = body.createControlRange();
+ if (util.areHostProperties(testControlRange, ["item", "add"])) {
+ implementsControlRange = true;
+ }
+ }
+ 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, backward) {
+ var anchorPrefix = backward ? "end" : "start", focusPrefix = backward ? "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 = api.createNativeRange(range.getDocument());
+ nativeRange.setEnd(range.endContainer, range.endOffset);
+ nativeRange.setStart(range.startContainer, range.startOffset);
+ } else if (range instanceof WrappedRange) {
+ nativeRange = range.nativeRange;
+ } else if (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 module.createError("getSingleElementFromRange: range " + range.inspect() + " did not consist of a single element");
+ }
+ return nodes[0];
+ }
+
+ // Simple, quick test which only needs to distinguish between a TextRange and a ControlRange
+ 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 = 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 = getDocument(controlRange.item(0));
+ var newControlRange = 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 module.createError("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 (isHostMethod(testSelection, "getRangeAt")) {
+ // try/catch is present because getRangeAt() must have thrown an error in some browser and some situation.
+ // Unfortunately, I didn't write a comment about the specifics and am now scared to take it out. Let that be a
+ // lesson to us all, especially me.
+ getSelectionRangeAt = function(sel, index) {
+ try {
+ return sel.getRangeAt(index);
+ } catch (ex) {
+ return null;
+ }
+ };
+ } else if (selectionHasAnchorAndFocus) {
+ getSelectionRangeAt = function(sel) {
+ var doc = getDocument(sel.anchorNode);
+ var range = api.createRange(doc);
+ range.setStartAndEnd(sel.anchorNode, sel.anchorOffset, 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.setStartAndEnd(sel.focusNode, sel.focusOffset, sel.anchorNode, sel.anchorOffset);
+ }
+
+ return range;
+ };
+ }
+
+ function WrappedSelection(selection, docSelection, win) {
+ this.nativeSelection = selection;
+ this.docSelection = docSelection;
+ this._ranges = [];
+ this.win = win;
+ this.refresh();
+ }
+
+ WrappedSelection.prototype = api.selectionPrototype;
+
+ function deleteProperties(sel) {
+ sel.win = sel.anchorNode = sel.focusNode = sel._ranges = null;
+ sel.rangeCount = sel.anchorOffset = sel.focusOffset = 0;
+ sel.detached = true;
+ }
+
+ var cachedRangySelections = [];
+
+ function actOnCachedSelection(win, action) {
+ var i = cachedRangySelections.length, cached, sel;
+ while (i--) {
+ cached = cachedRangySelections[i];
+ sel = cached.selection;
+ if (action == "deleteAll") {
+ deleteProperties(sel);
+ } else if (cached.win == win) {
+ if (action == "delete") {
+ cachedRangySelections.splice(i, 1);
+ return true;
+ } else {
+ return sel;
+ }
+ }
+ }
+ if (action == "deleteAll") {
+ cachedRangySelections.length = 0;
+ }
+ return null;
+ }
+
+ var getSelection = function(win) {
+ // Check if the parameter is a Rangy Selection object
+ if (win && win instanceof WrappedSelection) {
+ win.refresh();
+ return win;
+ }
+
+ win = getWindow(win, "getNativeSelection");
+
+ var sel = actOnCachedSelection(win);
+ var nativeSel = getNativeSelection(win), docSel = implementsDocSelection ? getDocSelection(win) : null;
+ if (sel) {
+ sel.nativeSelection = nativeSel;
+ sel.docSelection = docSel;
+ sel.refresh();
+ } else {
+ sel = new WrappedSelection(nativeSel, docSel, win);
+ cachedRangySelections.push( { win: win, selection: sel } );
+ }
+ return sel;
+ };
+
+ api.getSelection = getSelection;
+
+ util.createAliasForDeprecatedMethod(api, "getIframeSelection", "getSelection");
+
+ var selProto = WrappedSelection.prototype;
+
+ function createControlSelection(sel, ranges) {
+ // Ensure that the selection becomes of type "Control"
+ var doc = getDocument(ranges[0].startContainer);
+ var controlRange = getBody(doc).createControlRange();
+ for (var i = 0, el, len = ranges.length; i < len; ++i) {
+ el = getSingleElementFromRange(ranges[i]);
+ try {
+ controlRange.add(el);
+ } catch (ex) {
+ throw module.createError("setRanges(): Element within 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 addRangeBackward = function(sel, range) {
+ addRangeBackwardToNative(sel.nativeSelection, range);
+ sel.refresh();
+ };
+
+ if (selectionHasRangeCount) {
+ selProto.addRange = function(range, direction) {
+ if (implementsControlRange && implementsDocSelection && this.docSelection.type == CONTROL) {
+ addRangeToControlSelection(this, range);
+ } else {
+ if (isDirectionBackward(direction) && selectionHasExtend) {
+ addRangeBackward(this, range);
+ } else {
+ var previousRangeCount;
+ if (selectionSupportsMultipleRanges) {
+ previousRangeCount = this.rangeCount;
+ } else {
+ this.removeAllRanges();
+ previousRangeCount = 0;
+ }
+ // Clone the native range so that changing the selected range does not affect the selection.
+ // This is contrary to the spec but is the only way to achieve consistency between browsers. See
+ // issue 80.
+ var clonedNativeRange = getNativeRange(range).cloneRange();
+ try {
+ this.nativeSelection.addRange(clonedNativeRange);
+ } catch (ex) {
+ }
+
+ // 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 && !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, selectionIsBackward(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, direction) {
+ if (isDirectionBackward(direction) && selectionHasExtend) {
+ addRangeBackward(this, range);
+ } else {
+ this.nativeSelection.addRange(getNativeRange(range));
+ this.refresh();
+ }
+ };
+ }
+
+ selProto.setRanges = function(ranges) {
+ if (implementsControlRange && implementsDocSelection && 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 (isHostMethod(testSelection, "empty") && 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 = getDocument(this.anchorNode);
+ } else if (this.docSelection.type == CONTROL) {
+ var controlRange = this.docSelection.createRange();
+ if (controlRange.length) {
+ doc = getDocument( controlRange.item(0) );
+ }
+ }
+ if (doc) {
+ var textRange = getBody(doc).createTextRange();
+ textRange.select();
+ this.docSelection.empty();
+ }
+ }
+ } catch(ex) {}
+ updateEmptySelection(this);
+ };
+
+ selProto.addRange = function(range) {
+ if (this.docSelection.type == CONTROL) {
+ addRangeToControlSelection(this, range);
+ } else {
+ api.WrappedTextRange.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 {
+ // Clone the range to preserve selection-range independence. See issue 80.
+ return this._ranges[index].cloneRange();
+ }
+ };
+
+ var refreshSelection;
+
+ if (useDocumentSelection) {
+ refreshSelection = function(sel) {
+ var range;
+ if (api.isSelectionValid(sel.win)) {
+ range = sel.docSelection.createRange();
+ } else {
+ range = 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 (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], selectionIsBackward(sel.nativeSelection));
+ sel.isCollapsed = selectionIsCollapsed(sel);
+ } else {
+ updateEmptySelection(sel);
+ }
+ }
+ };
+ } else if (selectionHasAnchorAndFocus && typeof testSelection.isCollapsed == BOOLEAN && typeof testRange.collapsed == BOOLEAN && 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;
+ var oldAnchorNode = this.anchorNode, oldAnchorOffset = this.anchorOffset;
+
+ refreshSelection(this);
+ if (checkForChanges) {
+ // Check the range count first
+ var i = oldRanges.length;
+ if (i != this._ranges.length) {
+ return true;
+ }
+
+ // Now check the direction. Checking the anchor position is the same is enough since we're checking all the
+ // ranges after this
+ if (this.anchorNode != oldAnchorNode || this.anchorOffset != oldAnchorOffset) {
+ return true;
+ }
+
+ // Finally, compare each range in turn
+ while (i--) {
+ if (!rangesEqual(oldRanges[i], this._ranges[i])) {
+ return true;
+ }
+ }
+ return false;
+ }
+ };
+
+ // Removal of a single range
+ var removeRangeManually = function(sel, range) {
+ var ranges = sel.getAllRanges();
+ sel.removeAllRanges();
+ for (var i = 0, len = ranges.length; i < len; ++i) {
+ if (!rangesEqual(range, ranges[i])) {
+ sel.addRange(ranges[i]);
+ }
+ }
+ if (!sel.rangeCount) {
+ updateEmptySelection(sel);
+ }
+ };
+
+ if (implementsControlRange && implementsDocSelection) {
+ 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 = getDocument(controlRange.item(0));
+ var newControlRange = 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 backward
+ var selectionIsBackward;
+ if (!useDocumentSelection && selectionHasAnchorAndFocus && features.implementsDomRange) {
+ selectionIsBackward = winSelectionIsBackward;
+
+ selProto.isBackward = function() {
+ return selectionIsBackward(this);
+ };
+ } else {
+ selectionIsBackward = selProto.isBackward = function() {
+ return false;
+ };
+ }
+
+ // Create an alias for backwards compatibility. From 1.3, everything is "backward" rather than "backwards"
+ selProto.isBackwards = selProto.isBackward;
+
+ // Selection stringifier
+ // This is conformant to the old HTML5 selections draft spec but differs from WebKit and Mozilla's implementation.
+ // The current spec does not yet define this method.
+ 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.win.document != getDocument(node)) {
+ throw new DOMException("WRONG_DOCUMENT_ERR");
+ }
+ }
+
+ // No current browser conforms fully to the spec for this method, so Rangy's own method is always used
+ selProto.collapse = function(node, offset) {
+ assertNodeInSameDocument(this, node);
+ var range = api.createRange(node);
+ range.collapseToPoint(node, offset);
+ this.setSingleRange(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 spec is very specific on how selectAllChildren should be implemented and not all browsers implement it as
+ // specified so the native implementation is never used by Rangy.
+ selProto.selectAllChildren = function(node) {
+ assertNodeInSameDocument(this, node);
+ var range = api.createRange(node);
+ range.selectNodeContents(node);
+ this.setSingleRange(range);
+ };
+
+ selProto.deleteFromDocument = function() {
+ // Sepcial behaviour required for IE's 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);
+ dom.removeNode(element);
+ }
+ this.refresh();
+ } else if (this.rangeCount) {
+ var ranges = this.getAllRanges();
+ if (ranges.length) {
+ this.removeAllRanges();
+ for (var i = 0, len = ranges.length; i < len; ++i) {
+ ranges[i].deleteContents();
+ }
+ // The 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.eachRange = function(func, returnValue) {
+ for (var i = 0, len = this._ranges.length; i < len; ++i) {
+ if ( func( this.getRangeAt(i) ) ) {
+ return returnValue;
+ }
+ }
+ };
+
+ selProto.getAllRanges = function() {
+ var ranges = [];
+ this.eachRange(function(range) {
+ ranges.push(range);
+ });
+ return ranges;
+ };
+
+ selProto.setSingleRange = function(range, direction) {
+ this.removeAllRanges();
+ this.addRange(range, direction);
+ };
+
+ selProto.callMethodOnEachRange = function(methodName, params) {
+ var results = [];
+ this.eachRange( function(range) {
+ results.push( range[methodName].apply(range, params || []) );
+ } );
+ return results;
+ };
+
+ function createStartOrEndSetter(isStart) {
+ return function(node, offset) {
+ var range;
+ if (this.rangeCount) {
+ range = this.getRangeAt(0);
+ range["set" + (isStart ? "Start" : "End")](node, offset);
+ } else {
+ range = api.createRange(this.win.document);
+ range.setStartAndEnd(node, offset);
+ }
+ this.setSingleRange(range, this.isBackward());
+ };
+ }
+
+ selProto.setStart = createStartOrEndSetter(true);
+ selProto.setEnd = createStartOrEndSetter(false);
+
+ // Add select() method to Range prototype. Any existing selection will be removed.
+ api.rangePrototype.select = function(direction) {
+ getSelection( this.getDocument() ).setSingleRange(this, direction);
+ };
+
+ selProto.changeEachRange = function(func) {
+ var ranges = [];
+ var backward = this.isBackward();
+
+ this.eachRange(function(range) {
+ func(range);
+ ranges.push(range);
+ });
+
+ this.removeAllRanges();
+ if (backward && ranges.length == 1) {
+ this.addRange(ranges[0], "backward");
+ } else {
+ this.setRanges(ranges);
+ }
+ };
+
+ selProto.containsNode = function(node, allowPartial) {
+ return this.eachRange( function(range) {
+ return range.containsNode(node, allowPartial);
+ }, true ) || false;
+ };
+
+ selProto.getBookmark = function(containerNode) {
+ return {
+ backward: this.isBackward(),
+ rangeBookmarks: this.callMethodOnEachRange("getBookmark", [containerNode])
+ };
+ };
+
+ selProto.moveToBookmark = function(bookmark) {
+ var selRanges = [];
+ for (var i = 0, rangeBookmark, range; rangeBookmark = bookmark.rangeBookmarks[i++]; ) {
+ range = api.createRange(this.win);
+ range.moveToBookmark(rangeBookmark);
+ selRanges.push(range);
+ }
+ if (bookmark.backward) {
+ this.setSingleRange(selRanges[0], "backward");
+ } else {
+ this.setRanges(selRanges);
+ }
+ };
+
+ selProto.saveRanges = function() {
+ return {
+ backward: this.isBackward(),
+ ranges: this.callMethodOnEachRange("cloneRange")
+ };
+ };
+
+ selProto.restoreRanges = function(selRanges) {
+ this.removeAllRanges();
+ for (var i = 0, range; range = selRanges.ranges[i]; ++i) {
+ this.addRange(range, (selRanges.backward && i == 0));
+ }
+ };
+
+ selProto.toHtml = function() {
+ var rangeHtmls = [];
+ this.eachRange(function(range) {
+ rangeHtmls.push( DomRange.toHtml(range) );
+ });
+ return rangeHtmls.join("");
+ };
+
+ if (features.implementsTextRange) {
+ selProto.getNativeTextRange = function() {
+ var sel, textRange;
+ if ( (sel = this.docSelection) ) {
+ var range = sel.createRange();
+ if (isTextRange(range)) {
+ return range;
+ } else {
+ throw module.createError("getNativeTextRange: selection is a control selection");
+ }
+ } else if (this.rangeCount > 0) {
+ return api.WrappedTextRange.rangeToTextRange( this.getRangeAt(0) );
+ } else {
+ throw module.createError("getNativeTextRange: selection contains no range");
+ }
+ };
+ }
+
+ 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() {
+ actOnCachedSelection(this.win, "delete");
+ deleteProperties(this);
+ };
+
+ WrappedSelection.detachAll = function() {
+ actOnCachedSelection(null, "deleteAll");
+ };
+
+ WrappedSelection.inspect = inspect;
+ WrappedSelection.isDirectionBackward = isDirectionBackward;
+
+ api.Selection = WrappedSelection;
+
+ api.selectionPrototype = selProto;
+
+ api.addShimListener(function(win) {
+ if (typeof win.getSelection == "undefined") {
+ win.getSelection = function() {
+ return getSelection(win);
+ };
+ }
+ win = null;
+ });
+ });
+
+
+ /*----------------------------------------------------------------------------------------------------------------*/
+
+ // Wait for document to load before initializing
+ var docReady = false;
+
+ var loadHandler = function(e) {
+ if (!docReady) {
+ docReady = true;
+ if (!api.initialized && api.config.autoInitialize) {
+ init();
+ }
+ }
+ };
+
+ if (isBrowser) {
+ // Test whether the document has already been loaded and initialize immediately if so
+ if (document.readyState == "complete") {
+ loadHandler();
+ } else {
+ if (isHostMethod(document, "addEventListener")) {
+ document.addEventListener("DOMContentLoaded", loadHandler, false);
+ }
+
+ // Add a fallback in case the DOMContentLoaded event isn't supported
+ addListener(window, "load", loadHandler);
+ }
+ }
+
+ return api;
+}, this);
\ No newline at end of file
fnp / wl-app.git / blobdiff