3739 lines
142 KiB
JavaScript
3739 lines
142 KiB
JavaScript
/**
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* Rangy, a cross-browser JavaScript range and selection library
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* http://code.google.com/p/rangy/
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*
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* Copyright 2013, Tim Down
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* Licensed under the MIT license.
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* Version: 1.3alpha.804
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* Build date: 8 December 2013
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*/
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(function(global) {
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var amdSupported = (typeof global.define == "function" && global.define.amd);
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var OBJECT = "object", FUNCTION = "function", UNDEFINED = "undefined";
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// Minimal set of properties required for DOM Level 2 Range compliance. Comparison constants such as START_TO_START
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// are omitted because ranges in KHTML do not have them but otherwise work perfectly well. See issue 113.
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var domRangeProperties = ["startContainer", "startOffset", "endContainer", "endOffset", "collapsed",
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"commonAncestorContainer"];
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// Minimal set of methods required for DOM Level 2 Range compliance
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var domRangeMethods = ["setStart", "setStartBefore", "setStartAfter", "setEnd", "setEndBefore",
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"setEndAfter", "collapse", "selectNode", "selectNodeContents", "compareBoundaryPoints", "deleteContents",
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"extractContents", "cloneContents", "insertNode", "surroundContents", "cloneRange", "toString", "detach"];
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var textRangeProperties = ["boundingHeight", "boundingLeft", "boundingTop", "boundingWidth", "htmlText", "text"];
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// Subset of TextRange's full set of methods that we're interested in
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var textRangeMethods = ["collapse", "compareEndPoints", "duplicate", "moveToElementText", "parentElement", "select",
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"setEndPoint", "getBoundingClientRect"];
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/*----------------------------------------------------------------------------------------------------------------*/
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// Trio of functions taken from Peter Michaux's article:
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// http://peter.michaux.ca/articles/feature-detection-state-of-the-art-browser-scripting
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function isHostMethod(o, p) {
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var t = typeof o[p];
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return t == FUNCTION || (!!(t == OBJECT && o[p])) || t == "unknown";
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}
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function isHostObject(o, p) {
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return !!(typeof o[p] == OBJECT && o[p]);
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}
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function isHostProperty(o, p) {
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return typeof o[p] != UNDEFINED;
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}
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// Creates a convenience function to save verbose repeated calls to tests functions
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function createMultiplePropertyTest(testFunc) {
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return function(o, props) {
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var i = props.length;
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while (i--) {
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if (!testFunc(o, props[i])) {
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return false;
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}
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}
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return true;
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};
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}
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// Next trio of functions are a convenience to save verbose repeated calls to previous two functions
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var areHostMethods = createMultiplePropertyTest(isHostMethod);
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var areHostObjects = createMultiplePropertyTest(isHostObject);
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var areHostProperties = createMultiplePropertyTest(isHostProperty);
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function isTextRange(range) {
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return range && areHostMethods(range, textRangeMethods) && areHostProperties(range, textRangeProperties);
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}
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function getBody(doc) {
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return isHostObject(doc, "body") ? doc.body : doc.getElementsByTagName("body")[0];
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}
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var modules = {};
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var api = {
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version: "1.3alpha.804",
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initialized: false,
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supported: true,
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util: {
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isHostMethod: isHostMethod,
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isHostObject: isHostObject,
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isHostProperty: isHostProperty,
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areHostMethods: areHostMethods,
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areHostObjects: areHostObjects,
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areHostProperties: areHostProperties,
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isTextRange: isTextRange,
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getBody: getBody
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},
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features: {},
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modules: modules,
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config: {
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alertOnFail: true,
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alertOnWarn: false,
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preferTextRange: false
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}
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};
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function consoleLog(msg) {
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if (isHostObject(window, "console") && isHostMethod(window.console, "log")) {
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window.console.log(msg);
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}
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}
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function alertOrLog(msg, shouldAlert) {
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if (shouldAlert) {
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window.alert(msg);
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} else {
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consoleLog(msg);
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}
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}
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function fail(reason) {
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api.initialized = true;
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api.supported = false;
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alertOrLog("Rangy is not supported on this page in your browser. Reason: " + reason, api.config.alertOnFail);
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}
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api.fail = fail;
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function warn(msg) {
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alertOrLog("Rangy warning: " + msg, api.config.alertOnWarn);
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}
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api.warn = warn;
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// Add utility extend() method
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if ({}.hasOwnProperty) {
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api.util.extend = function(obj, props, deep) {
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var o, p;
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for (var i in props) {
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if (props.hasOwnProperty(i)) {
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o = obj[i];
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p = props[i];
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//if (deep) alert([o !== null, typeof o == "object", p !== null, typeof p == "object"])
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if (deep && o !== null && typeof o == "object" && p !== null && typeof p == "object") {
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api.util.extend(o, p, true);
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}
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obj[i] = p;
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}
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}
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return obj;
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};
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} else {
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fail("hasOwnProperty not supported");
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}
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// Test whether Array.prototype.slice can be relied on for NodeLists and use an alternative toArray() if not
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(function() {
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var el = document.createElement("div");
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el.appendChild(document.createElement("span"));
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var slice = [].slice;
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var toArray;
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try {
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if (slice.call(el.childNodes, 0)[0].nodeType == 1) {
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toArray = function(arrayLike) {
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return slice.call(arrayLike, 0);
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};
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}
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} catch (e) {}
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if (!toArray) {
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toArray = function(arrayLike) {
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var arr = [];
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for (var i = 0, len = arrayLike.length; i < len; ++i) {
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arr[i] = arrayLike[i];
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}
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return arr;
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};
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}
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api.util.toArray = toArray;
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})();
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// Very simple event handler wrapper function that doesn't attempt to solve issues such as "this" handling or
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// normalization of event properties
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var addListener;
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if (isHostMethod(document, "addEventListener")) {
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addListener = function(obj, eventType, listener) {
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obj.addEventListener(eventType, listener, false);
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};
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} else if (isHostMethod(document, "attachEvent")) {
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addListener = function(obj, eventType, listener) {
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obj.attachEvent("on" + eventType, listener);
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};
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} else {
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fail("Document does not have required addEventListener or attachEvent method");
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}
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api.util.addListener = addListener;
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var initListeners = [];
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function getErrorDesc(ex) {
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return ex.message || ex.description || String(ex);
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}
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// Initialization
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function init() {
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if (api.initialized) {
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return;
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}
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var testRange;
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var implementsDomRange = false, implementsTextRange = false;
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// First, perform basic feature tests
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if (isHostMethod(document, "createRange")) {
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testRange = document.createRange();
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if (areHostMethods(testRange, domRangeMethods) && areHostProperties(testRange, domRangeProperties)) {
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implementsDomRange = true;
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}
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testRange.detach();
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}
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var body = getBody(document);
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if (!body || body.nodeName.toLowerCase() != "body") {
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fail("No body element found");
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return;
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}
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if (body && isHostMethod(body, "createTextRange")) {
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testRange = body.createTextRange();
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if (isTextRange(testRange)) {
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implementsTextRange = true;
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}
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}
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if (!implementsDomRange && !implementsTextRange) {
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fail("Neither Range nor TextRange are available");
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return;
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}
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api.initialized = true;
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api.features = {
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implementsDomRange: implementsDomRange,
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implementsTextRange: implementsTextRange
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};
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// Initialize modules
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var module, errorMessage;
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for (var moduleName in modules) {
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if ( (module = modules[moduleName]) instanceof Module ) {
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module.init(module, api);
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}
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}
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// Call init listeners
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for (var i = 0, len = initListeners.length; i < len; ++i) {
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try {
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initListeners[i](api);
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} catch (ex) {
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errorMessage = "Rangy init listener threw an exception. Continuing. Detail: " + getErrorDesc(ex);
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consoleLog(errorMessage);
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}
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}
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}
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// Allow external scripts to initialize this library in case it's loaded after the document has loaded
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api.init = init;
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// Execute listener immediately if already initialized
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api.addInitListener = function(listener) {
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if (api.initialized) {
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listener(api);
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} else {
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initListeners.push(listener);
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}
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};
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var createMissingNativeApiListeners = [];
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api.addCreateMissingNativeApiListener = function(listener) {
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createMissingNativeApiListeners.push(listener);
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};
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function createMissingNativeApi(win) {
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win = win || window;
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init();
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// Notify listeners
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for (var i = 0, len = createMissingNativeApiListeners.length; i < len; ++i) {
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createMissingNativeApiListeners[i](win);
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}
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}
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api.createMissingNativeApi = createMissingNativeApi;
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function Module(name, dependencies, initializer) {
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this.name = name;
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this.dependencies = dependencies;
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this.initialized = false;
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this.supported = false;
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this.initializer = initializer;
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}
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Module.prototype = {
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init: function(api) {
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var requiredModuleNames = this.dependencies || [];
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for (var i = 0, len = requiredModuleNames.length, requiredModule, moduleName; i < len; ++i) {
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moduleName = requiredModuleNames[i];
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requiredModule = modules[moduleName];
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if (!requiredModule || !(requiredModule instanceof Module)) {
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throw new Error("required module '" + moduleName + "' not found");
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}
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requiredModule.init();
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if (!requiredModule.supported) {
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throw new Error("required module '" + moduleName + "' not supported");
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}
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}
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// Now run initializer
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this.initializer(this)
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},
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fail: function(reason) {
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this.initialized = true;
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this.supported = false;
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throw new Error("Module '" + this.name + "' failed to load: " + reason);
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},
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warn: function(msg) {
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api.warn("Module " + this.name + ": " + msg);
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},
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deprecationNotice: function(deprecated, replacement) {
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api.warn("DEPRECATED: " + deprecated + " in module " + this.name + "is deprecated. Please use "
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+ replacement + " instead");
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},
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createError: function(msg) {
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return new Error("Error in Rangy " + this.name + " module: " + msg);
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}
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};
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function createModule(isCore, name, dependencies, initFunc) {
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var newModule = new Module(name, dependencies, function(module) {
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if (!module.initialized) {
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module.initialized = true;
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try {
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initFunc(api, module);
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module.supported = true;
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} catch (ex) {
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var errorMessage = "Module '" + name + "' failed to load: " + getErrorDesc(ex);
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consoleLog(errorMessage);
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}
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}
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});
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modules[name] = newModule;
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/*
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// Add module AMD support
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if (!isCore && amdSupported) {
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global.define(["rangy-core"], function(rangy) {
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});
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}
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*/
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}
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api.createModule = function(name) {
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// Allow 2 or 3 arguments (second argument is an optional array of dependencies)
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var initFunc, dependencies;
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if (arguments.length == 2) {
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initFunc = arguments[1];
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dependencies = [];
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} else {
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initFunc = arguments[2];
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dependencies = arguments[1];
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}
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createModule(false, name, dependencies, initFunc);
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};
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api.createCoreModule = function(name, dependencies, initFunc) {
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createModule(true, name, dependencies, initFunc);
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};
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/*----------------------------------------------------------------------------------------------------------------*/
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// Ensure rangy.rangePrototype and rangy.selectionPrototype are available immediately
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function RangePrototype() {}
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api.RangePrototype = RangePrototype;
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api.rangePrototype = new RangePrototype();
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function SelectionPrototype() {}
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api.selectionPrototype = new SelectionPrototype();
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/*----------------------------------------------------------------------------------------------------------------*/
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// Wait for document to load before running tests
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var docReady = false;
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var loadHandler = function(e) {
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if (!docReady) {
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docReady = true;
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if (!api.initialized) {
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init();
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}
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}
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};
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// Test whether we have window and document objects that we will need
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if (typeof window == UNDEFINED) {
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fail("No window found");
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return;
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}
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if (typeof document == UNDEFINED) {
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fail("No document found");
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return;
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}
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if (isHostMethod(document, "addEventListener")) {
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document.addEventListener("DOMContentLoaded", loadHandler, false);
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}
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// Add a fallback in case the DOMContentLoaded event isn't supported
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addListener(window, "load", loadHandler);
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/*----------------------------------------------------------------------------------------------------------------*/
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// AMD, for those who like this kind of thing
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if (amdSupported) {
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// AMD. Register as an anonymous module.
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global.define(function() {
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api.amd = true;
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return api;
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});
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}
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// Create a "rangy" property of the global object in any case. Other Rangy modules (which use Rangy's own simple
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// module system) rely on the existence of this global property
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global.rangy = api;
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})(this);
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rangy.createCoreModule("DomUtil", [], function(api, module) {
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var UNDEF = "undefined";
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var util = api.util;
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// Perform feature tests
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if (!util.areHostMethods(document, ["createDocumentFragment", "createElement", "createTextNode"])) {
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module.fail("document missing a Node creation method");
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}
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if (!util.isHostMethod(document, "getElementsByTagName")) {
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module.fail("document missing getElementsByTagName method");
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}
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var el = document.createElement("div");
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if (!util.areHostMethods(el, ["insertBefore", "appendChild", "cloneNode"] ||
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!util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]))) {
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module.fail("Incomplete Element implementation");
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}
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// innerHTML is required for Range's createContextualFragment method
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if (!util.isHostProperty(el, "innerHTML")) {
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module.fail("Element is missing innerHTML property");
|
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}
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|
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var textNode = document.createTextNode("test");
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if (!util.areHostMethods(textNode, ["splitText", "deleteData", "insertData", "appendData", "cloneNode"] ||
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!util.areHostObjects(el, ["previousSibling", "nextSibling", "childNodes", "parentNode"]) ||
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!util.areHostProperties(textNode, ["data"]))) {
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module.fail("Incomplete Text Node implementation");
|
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}
|
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|
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/*----------------------------------------------------------------------------------------------------------------*/
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// Removed use of indexOf because of a bizarre bug in Opera that is thrown in one of the Acid3 tests. I haven't been
|
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// able to replicate it outside of the test. The bug is that indexOf returns -1 when called on an Array that
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// contains just the document as a single element and the value searched for is the document.
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var arrayContains = /*Array.prototype.indexOf ?
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function(arr, val) {
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return arr.indexOf(val) > -1;
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}:*/
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function(arr, val) {
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var i = arr.length;
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while (i--) {
|
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if (arr[i] === val) {
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return true;
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}
|
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}
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return false;
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};
|
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|
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// Opera 11 puts HTML elements in the null namespace, it seems, and IE 7 has undefined namespaceURI
|
|
function isHtmlNamespace(node) {
|
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var ns;
|
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return typeof node.namespaceURI == UNDEF || ((ns = node.namespaceURI) === null || ns == "http://www.w3.org/1999/xhtml");
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}
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|
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function parentElement(node) {
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var parent = node.parentNode;
|
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return (parent.nodeType == 1) ? parent : null;
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}
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|
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function getNodeIndex(node) {
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var i = 0;
|
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while( (node = node.previousSibling) ) {
|
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++i;
|
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}
|
|
return i;
|
|
}
|
|
|
|
function getNodeLength(node) {
|
|
switch (node.nodeType) {
|
|
case 7:
|
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case 10:
|
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return 0;
|
|
case 3:
|
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case 8:
|
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return node.length;
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default:
|
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return node.childNodes.length;
|
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}
|
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}
|
|
|
|
function getCommonAncestor(node1, node2) {
|
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var ancestors = [], n;
|
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for (n = node1; n; n = n.parentNode) {
|
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ancestors.push(n);
|
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}
|
|
|
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for (n = node2; n; n = n.parentNode) {
|
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if (arrayContains(ancestors, n)) {
|
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return n;
|
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}
|
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}
|
|
|
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return null;
|
|
}
|
|
|
|
function isAncestorOf(ancestor, descendant, selfIsAncestor) {
|
|
var n = selfIsAncestor ? descendant : descendant.parentNode;
|
|
while (n) {
|
|
if (n === ancestor) {
|
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return true;
|
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} else {
|
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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) {
|
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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) {
|
|
try {
|
|
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 + ">[" + getNodeIndex(node) + "][" + 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[propName];
|
|
};
|
|
} else {
|
|
module.fail("No means of obtaining computed style properties found");
|
|
}
|
|
|
|
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
|
|
};
|
|
|
|
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: util.getBody,
|
|
isWindow: isWindow,
|
|
getContentDocument: getContentDocument,
|
|
getRootContainer: getRootContainer,
|
|
comparePoints: comparePoints,
|
|
isBrokenNode: isBrokenNode,
|
|
inspectNode: inspectNode,
|
|
getComputedStyleProperty: getComputedStyleProperty,
|
|
fragmentFromNodeChildren: fragmentFromNodeChildren,
|
|
createIterator: createIterator,
|
|
DomPosition: DomPosition
|
|
};
|
|
|
|
api.DOMException = DOMException;
|
|
});
|
|
rangy.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;
|
|
|
|
/*----------------------------------------------------------------------------------------------------------------*/
|
|
|
|
// 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 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(true);
|
|
}
|
|
|
|
if (node.nodeType == 10) { // DocumentType
|
|
throw new DOMException("HIERARCHY_REQUEST_ERR");
|
|
}
|
|
frag.appendChild(node);
|
|
}
|
|
return frag;
|
|
}
|
|
|
|
function iterateSubtree(rangeIterator, func, iteratorState) {
|
|
var it, n;
|
|
iteratorState = iteratorState || { stop: false };
|
|
for (var node, subRangeIterator; node = rangeIterator.next(); ) {
|
|
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(true);
|
|
if (iteratorState.stop) {
|
|
return;
|
|
}
|
|
}
|
|
} else {
|
|
// The whole node is selected, so we can use efficient DOM iteration to iterate over the node and its
|
|
// 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(true);
|
|
} else {
|
|
iterator.remove();
|
|
}
|
|
}
|
|
}
|
|
|
|
function extractSubtree(iterator) {
|
|
for (var node, frag = getRangeDocument(iterator.range).createDocumentFragment(), subIterator; node = iterator.next(); ) {
|
|
|
|
if (iterator.isPartiallySelectedSubtree()) {
|
|
node = node.cloneNode(false);
|
|
subIterator = iterator.getSubtreeIterator();
|
|
node.appendChild(extractSubtree(subIterator));
|
|
subIterator.detach(true);
|
|
} else {
|
|
iterator.remove();
|
|
}
|
|
if (node.nodeType == 10) { // DocumentType
|
|
throw new DOMException("HIERARCHY_REQUEST_ERR");
|
|
}
|
|
frag.appendChild(node);
|
|
}
|
|
return frag;
|
|
}
|
|
|
|
function getNodesInRange(range, nodeTypes, filter) {
|
|
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) {
|
|
current.parentNode.removeChild(current);
|
|
} else {
|
|
}
|
|
}
|
|
},
|
|
|
|
// Checks if the current node is partially selected
|
|
isPartiallySelectedSubtree: function() {
|
|
var current = this._current;
|
|
return isNonTextPartiallySelected(current, this.range);
|
|
},
|
|
|
|
getSubtreeIterator: function() {
|
|
var subRange;
|
|
if (this.isSingleCharacterDataNode) {
|
|
subRange = this.range.cloneRange();
|
|
subRange.collapse(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(detachRange) {
|
|
if (detachRange) {
|
|
this.range.detach();
|
|
}
|
|
this.range = this._current = this._next = this._first = this._last = this.sc = this.so = this.ec = this.eo = null;
|
|
}
|
|
};
|
|
|
|
/*----------------------------------------------------------------------------------------------------------------*/
|
|
|
|
// Exceptions
|
|
|
|
function RangeException(codeName) {
|
|
this.code = this[codeName];
|
|
this.codeName = codeName;
|
|
this.message = "RangeException: " + this.codeName;
|
|
}
|
|
|
|
RangeException.prototype = {
|
|
BAD_BOUNDARYPOINTS_ERR: 1,
|
|
INVALID_NODE_TYPE_ERR: 2
|
|
};
|
|
|
|
RangeException.prototype.toString = function() {
|
|
return this.message;
|
|
};
|
|
|
|
/*----------------------------------------------------------------------------------------------------------------*/
|
|
|
|
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 RangeException("INVALID_NODE_TYPE_ERR");
|
|
}
|
|
}
|
|
|
|
function assertNotDetached(range) {
|
|
if (!range.startContainer) {
|
|
throw new DOMException("INVALID_STATE_ERR");
|
|
}
|
|
}
|
|
|
|
function assertValidNodeType(node, invalidTypes) {
|
|
if (!arrayContains(invalidTypes, node.nodeType)) {
|
|
throw new RangeException("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 isOrphan(node) {
|
|
return (crashyTextNodes && dom.isBrokenNode(node)) ||
|
|
!arrayContains(rootContainerNodeTypes, node.nodeType) && !getDocumentOrFragmentContainer(node, true);
|
|
}
|
|
|
|
function isValidOffset(node, offset) {
|
|
return offset <= (isCharacterDataNode(node) ? node.length : node.childNodes.length);
|
|
}
|
|
|
|
function isRangeValid(range) {
|
|
return (!!range.startContainer && !!range.endContainer
|
|
&& !isOrphan(range.startContainer)
|
|
&& !isOrphan(range.endContainer)
|
|
&& isValidOffset(range.startContainer, range.startOffset)
|
|
&& isValidOffset(range.endContainer, range.endOffset));
|
|
}
|
|
|
|
function assertRangeValid(range) {
|
|
assertNotDetached(range);
|
|
if (!isRangeValid(range)) {
|
|
throw new Error("Range error: Range is no longer valid after DOM mutation (" + range.inspect() + ")");
|
|
}
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------------------------------------------*/
|
|
|
|
// Test the browser's innerHTML support to decide how to implement createContextualFragment
|
|
var styleEl = document.createElement("style");
|
|
var htmlParsingConforms = false;
|
|
try {
|
|
styleEl.innerHTML = "<b>x</b>";
|
|
htmlParsingConforms = (styleEl.firstChild.nodeType == 3); // Opera incorrectly creates an element node
|
|
} catch (e) {
|
|
// IE 6 and 7 throw
|
|
}
|
|
|
|
api.features.htmlParsingConforms = htmlParsingConforms;
|
|
|
|
var createContextualFragment = htmlParsingConforms ?
|
|
|
|
// Implementation as per HTML parsing spec, trusting in the browser's implementation of innerHTML. See
|
|
// discussion and base code for this implementation at issue 67.
|
|
// Spec: http://html5.org/specs/dom-parsing.html#extensions-to-the-range-interface
|
|
// Thanks to Aleks Williams.
|
|
function(fragmentStr) {
|
|
// "Let node the context object's start's node."
|
|
var node = this.startContainer;
|
|
var doc = 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) {
|
|
assertNotDetached(this);
|
|
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);
|
|
}
|
|
|
|
/*----------------------------------------------------------------------------------------------------------------*/
|
|
|
|
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 RangeException("BAD_BOUNDARYPOINTS_ERR");
|
|
}
|
|
|
|
// Extract the contents
|
|
var content = this.extractContents();
|
|
|
|
// Clear the children of the node
|
|
if (node.hasChildNodes()) {
|
|
while (node.lastChild) {
|
|
node.removeChild(node.lastChild);
|
|
}
|
|
}
|
|
|
|
// Insert the new node and add the extracted contents
|
|
insertNodeAtPosition(node, this.startContainer, this.startOffset);
|
|
node.appendChild(content);
|
|
|
|
this.selectNode(node);
|
|
},
|
|
|
|
cloneRange: function() {
|
|
assertRangeValid(this);
|
|
var range = new Range(getRangeDocument(this));
|
|
var i = rangeProperties.length, prop;
|
|
while (i--) {
|
|
prop = rangeProperties[i];
|
|
range[prop] = this[prop];
|
|
}
|
|
return range;
|
|
},
|
|
|
|
toString: function() {
|
|
assertRangeValid(this);
|
|
var sc = this.startContainer;
|
|
if (sc === this.endContainer && 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() {
|
|
assertRangeValid(this);
|
|
var container = this.commonAncestorContainer.parentNode.cloneNode(false);
|
|
container.appendChild(this.cloneContents());
|
|
return container.innerHTML;
|
|
},
|
|
|
|
// touchingIsIntersecting determines whether this method considers a node that borders a range intersects
|
|
// with it (as in WebKit) or not (as in Gecko pre-1.9, and the default)
|
|
intersectsNode: function(node, touchingIsIntersecting) {
|
|
assertRangeValid(this);
|
|
assertNode(node, "NOT_FOUND_ERR");
|
|
if (getDocument(node) !== getRangeDocument(this)) {
|
|
return false;
|
|
}
|
|
|
|
var parent = node.parentNode, offset = getNodeIndex(node);
|
|
assertNode(parent, "NOT_FOUND_ERR");
|
|
|
|
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 RangeException("Ranges do not intersect");
|
|
}
|
|
},
|
|
|
|
containsNode: function(node, allowPartial) {
|
|
if (allowPartial) {
|
|
return this.intersectsNode(node, false);
|
|
} else {
|
|
return this.compareNode(node) == n_i;
|
|
}
|
|
},
|
|
|
|
containsNodeContents: function(node) {
|
|
return this.comparePoint(node, 0) >= 0 && this.comparePoint(node, 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);
|
|
var contains = this.containsRange(nodeRange);
|
|
nodeRange.detach();
|
|
return contains;
|
|
} else {
|
|
return this.containsNodeContents(node);
|
|
}
|
|
},
|
|
|
|
getNodes: function(nodeTypes, filter) {
|
|
assertRangeValid(this);
|
|
return getNodesInRange(this, nodeTypes, filter);
|
|
},
|
|
|
|
getDocument: function() {
|
|
return getRangeDocument(this);
|
|
},
|
|
|
|
collapseBefore: function(node) {
|
|
assertNotDetached(this);
|
|
|
|
this.setEndBefore(node);
|
|
this.collapse(false);
|
|
},
|
|
|
|
collapseAfter: function(node) {
|
|
assertNotDetached(this);
|
|
|
|
this.setStartAfter(node);
|
|
this.collapse(true);
|
|
},
|
|
|
|
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;
|
|
preSelectionRange.detach();
|
|
}
|
|
|
|
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);
|
|
}
|
|
});
|
|
|
|
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, detacher) {
|
|
function createBeforeAfterNodeSetter(isBefore, isStart) {
|
|
return function(node) {
|
|
assertNotDetached(this);
|
|
assertValidNodeType(node, beforeAfterNodeTypes);
|
|
assertValidNodeType(getRootContainer(node), rootContainerNodeTypes);
|
|
|
|
var boundary = (isBefore ? getBoundaryBeforeNode : getBoundaryAfterNode)(node);
|
|
(isStart ? setRangeStart : setRangeEnd)(this, boundary.node, boundary.offset);
|
|
};
|
|
}
|
|
|
|
function setRangeStart(range, node, offset) {
|
|
var ec = range.endContainer, eo = range.endOffset;
|
|
if (node !== range.startContainer || offset !== range.startOffset) {
|
|
// Check the root containers of the range and the new boundary, and also check whether the new boundary
|
|
// is after the current end. In either case, collapse the range to the new position
|
|
if (getRootContainer(node) != getRootContainer(ec) || 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) {
|
|
assertNotDetached(this);
|
|
assertNoDocTypeNotationEntityAncestor(node, true);
|
|
assertValidOffset(node, offset);
|
|
|
|
setRangeStart(this, node, offset);
|
|
},
|
|
|
|
setEnd: function(node, offset) {
|
|
assertNotDetached(this);
|
|
assertNoDocTypeNotationEntityAncestor(node, true);
|
|
assertValidOffset(node, offset);
|
|
|
|
setRangeEnd(this, node, offset);
|
|
},
|
|
|
|
/**
|
|
* 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() {
|
|
assertNotDetached(this);
|
|
|
|
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) {
|
|
assertNotDetached(this);
|
|
assertNoDocTypeNotationEntityAncestor(node, true);
|
|
|
|
boundaryUpdater(this, node, 0, node, getNodeLength(node));
|
|
},
|
|
|
|
selectNode: function(node) {
|
|
assertNotDetached(this);
|
|
assertNoDocTypeNotationEntityAncestor(node, false);
|
|
assertValidNodeType(node, beforeAfterNodeTypes);
|
|
|
|
var start = getBoundaryBeforeNode(node), end = getBoundaryAfterNode(node);
|
|
boundaryUpdater(this, start.node, start.offset, end.node, end.offset);
|
|
},
|
|
|
|
extractContents: createRangeContentRemover(extractSubtree, boundaryUpdater),
|
|
|
|
deleteContents: createRangeContentRemover(deleteSubtree, boundaryUpdater),
|
|
|
|
canSurroundContents: function() {
|
|
assertRangeValid(this);
|
|
assertNodeNotReadOnly(this.startContainer);
|
|
assertNodeNotReadOnly(this.endContainer);
|
|
|
|
// Check if the contents can be surrounded. Specifically, this means whether the range partially selects
|
|
// no non-text nodes.
|
|
var iterator = new RangeIterator(this, true);
|
|
var boundariesInvalid = (iterator._first && (isNonTextPartiallySelected(iterator._first, this)) ||
|
|
(iterator._last && isNonTextPartiallySelected(iterator._last, this)));
|
|
iterator.detach();
|
|
return !boundariesInvalid;
|
|
},
|
|
|
|
detach: function() {
|
|
detacher(this);
|
|
},
|
|
|
|
splitBoundaries: function() {
|
|
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);
|
|
sibling.parentNode.removeChild(sibling);
|
|
}
|
|
};
|
|
|
|
var mergeBackward = function(node) {
|
|
var sibling = node.previousSibling;
|
|
if (sibling && sibling.nodeType == node.nodeType) {
|
|
sc = node;
|
|
var nodeLength = node.length;
|
|
so = sibling.length;
|
|
node.insertData(0, sibling.data);
|
|
sibling.parentNode.removeChild(sibling);
|
|
if (sc == ec) {
|
|
eo += so;
|
|
ec = sc;
|
|
} else if (ec == node.parentNode) {
|
|
var nodeIndex = getNodeIndex(node);
|
|
if (eo == nodeIndex) {
|
|
ec = node;
|
|
eo = nodeLength;
|
|
} else if (eo > nodeIndex) {
|
|
eo--;
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
var normalizeStart = true;
|
|
|
|
if (isCharacterDataNode(ec)) {
|
|
if (ec.length == eo) {
|
|
mergeForward(ec);
|
|
}
|
|
} 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.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) {
|
|
assertNotDetached(this);
|
|
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 detach(range) {
|
|
assertNotDetached(range);
|
|
range.startContainer = range.startOffset = range.endContainer = range.endOffset = range.document = null;
|
|
range.collapsed = range.commonAncestorContainer = null;
|
|
}
|
|
|
|
function Range(doc) {
|
|
this.startContainer = doc;
|
|
this.startOffset = 0;
|
|
this.endContainer = doc;
|
|
this.endOffset = 0;
|
|
this.document = doc;
|
|
updateCollapsedAndCommonAncestor(this);
|
|
}
|
|
|
|
createPrototypeRange(Range, updateBoundaries, detach);
|
|
|
|
util.extend(Range, {
|
|
rangeProperties: rangeProperties,
|
|
RangeIterator: RangeIterator,
|
|
copyComparisonConstants: copyComparisonConstants,
|
|
createPrototypeRange: createPrototypeRange,
|
|
inspect: inspect,
|
|
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;
|
|
api.RangeException = RangeException;
|
|
});
|
|
rangy.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);
|
|
}
|
|
}
|
|
|
|
function detach(range) {
|
|
range.nativeRange.detach();
|
|
range.detached = true;
|
|
var i = rangeProperties.length;
|
|
while (i--) {
|
|
range[ rangeProperties[i] ] = null;
|
|
}
|
|
}
|
|
|
|
var createBeforeAfterNodeSetter;
|
|
|
|
WrappedRange = function(range) {
|
|
if (!range) {
|
|
throw module.createError("WrappedRange: Range must be specified");
|
|
}
|
|
this.nativeRange = range;
|
|
updateRangeProperties(this);
|
|
};
|
|
|
|
DomRange.createPrototypeRange(WrappedRange, updateNativeRange, detach);
|
|
|
|
rangeProto = WrappedRange.prototype;
|
|
|
|
rangeProto.selectNode = function(node) {
|
|
this.nativeRange.selectNode(node);
|
|
updateRangeProperties(this);
|
|
};
|
|
|
|
rangeProto.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 9 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);
|
|
range.detach();
|
|
range2.detach();
|
|
|
|
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) {
|
|
workingNode.parentNode.removeChild(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 method below is a hybrid of the two methods above. It uses the fact that a string containing the
|
|
TextRange's 'text' property with each \r\n converted to a single \r character cannot be longer than the
|
|
text of the TextRange, so the start of the range is moved that length initially and then a character at
|
|
a time to make up for any trailing line breaks not contained in the 'text' property. This has good
|
|
performance in most situations compared to the previous two methods.
|
|
*/
|
|
var tempRange = workingRange.duplicate();
|
|
var rangeLength = tempRange.text.replace(/\r\n/g, "\r").length;
|
|
|
|
offset = tempRange.moveStart("character", rangeLength);
|
|
while ( (comparison = tempRange.compareEndPoints("StartToEnd", tempRange)) == -1) {
|
|
offset++;
|
|
tempRange.moveStart("character", 1);
|
|
}
|
|
} else {
|
|
offset = workingRange.text.length;
|
|
}
|
|
boundaryPosition = new DomPosition(boundaryNode, offset);
|
|
} else {
|
|
|
|
// If the boundary immediately follows a character data node and this is the end boundary, we should favour
|
|
// a position within that, and likewise for a start boundary preceding a character data node
|
|
previousNode = (isCollapsed || !isStart) && workingNode.previousSibling;
|
|
nextNode = (isCollapsed || isStart) && workingNode.nextSibling;
|
|
if (nextNode && 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
|
|
workingNode.parentNode.removeChild(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);
|
|
|
|
WrappedTextRange.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;
|
|
}
|
|
};
|
|
|
|
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() { return this; })();
|
|
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);
|
|
};
|
|
|
|
api.createIframeRange = function(iframeEl) {
|
|
module.deprecationNotice("createIframeRange()", "createRange(iframeEl)");
|
|
return api.createRange(iframeEl);
|
|
};
|
|
|
|
api.createIframeRangyRange = function(iframeEl) {
|
|
module.deprecationNotice("createIframeRangyRange()", "createRangyRange(iframeEl)");
|
|
return api.createRangyRange(iframeEl);
|
|
};
|
|
|
|
api.addCreateMissingNativeApiListener(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)
|
|
rangy.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" or "forward") 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.");
|
|
}
|
|
|
|
api.getNativeSelection = getNativeSelection;
|
|
|
|
var testSelection = getNativeSelection();
|
|
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 by these tests. This should usually be fine
|
|
// because initialization usually happens when the document loads, but could be a problem for a script that
|
|
// loads and initializes Rangy later. If anyone complains, code could be added to save and restore the
|
|
// selection.
|
|
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 body = getBody(document);
|
|
var testEl = body.appendChild( document.createElement("div") );
|
|
testEl.contentEditable = "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.addRange(r1);
|
|
collapsedNonEditableSelectionsSupported = (sel.rangeCount == 1);
|
|
sel.removeAllRanges();
|
|
|
|
// Test whether the native selection is capable of supporting multiple ranges
|
|
if (!selectionHasMultipleRanges) {
|
|
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);
|
|
r2.detach();
|
|
}
|
|
|
|
// Clean up
|
|
body.removeChild(testEl);
|
|
sel.removeAllRanges();
|
|
r1.detach();
|
|
|
|
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 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;
|
|
|
|
api.getIframeSelection = function(iframeEl) {
|
|
module.deprecationNotice("getIframeSelection()", "getSelection(iframeEl)");
|
|
return api.getSelection(dom.getIframeWindow(iframeEl));
|
|
};
|
|
|
|
var selProto = WrappedSelection.prototype;
|
|
|
|
function createControlSelection(sel, ranges) {
|
|
// Ensure that the selection becomes of type "Control"
|
|
var doc = 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.
|
|
this.nativeSelection.addRange(getNativeRange(range).cloneRange());
|
|
|
|
// 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 && 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) {
|
|
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 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);
|
|
element.parentNode.removeChild(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 );
|
|
};
|
|
|
|
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.toHtml = function() {
|
|
return this.callMethodOnEachRange("toHtml").join("");
|
|
};
|
|
|
|
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.addCreateMissingNativeApiListener(function(win) {
|
|
if (typeof win.getSelection == "undefined") {
|
|
win.getSelection = function() {
|
|
return getSelection(win);
|
|
};
|
|
}
|
|
win = null;
|
|
});
|
|
});
|