646 lines
23 KiB
JavaScript
646 lines
23 KiB
JavaScript
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BrowserHistoryUtils = {
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addEvent: function(elm, evType, fn, useCapture) {
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useCapture = useCapture || false;
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if (elm.addEventListener) {
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elm.addEventListener(evType, fn, useCapture);
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return true;
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}
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else if (elm.attachEvent) {
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var r = elm.attachEvent('on' + evType, fn);
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return r;
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}
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else {
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elm['on' + evType] = fn;
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}
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}
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}
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BrowserHistory = (function() {
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// type of browser
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var browser = {
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ie: false,
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firefox: false,
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safari: false,
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opera: false,
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version: -1
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};
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// if setDefaultURL has been called, our first clue
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// that the SWF is ready and listening
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//var swfReady = false;
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// the URL we'll send to the SWF once it is ready
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//var pendingURL = '';
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// Default app state URL to use when no fragment ID present
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var defaultHash = '';
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// Last-known app state URL
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var currentHref = document.location.href;
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// Initial URL (used only by IE)
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var initialHref = document.location.href;
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// Initial URL (used only by IE)
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var initialHash = document.location.hash;
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// History frame source URL prefix (used only by IE)
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var historyFrameSourcePrefix = 'history/historyFrame.html?';
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// History maintenance (used only by Safari)
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var currentHistoryLength = -1;
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var historyHash = [];
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var initialState = createState(initialHref, initialHref + '#' + initialHash, initialHash);
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var backStack = [];
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var forwardStack = [];
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var currentObjectId = null;
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//UserAgent detection
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var useragent = navigator.userAgent.toLowerCase();
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if (useragent.indexOf("opera") != -1) {
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browser.opera = true;
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} else if (useragent.indexOf("msie") != -1) {
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browser.ie = true;
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browser.version = parseFloat(useragent.substring(useragent.indexOf('msie') + 4));
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} else if (useragent.indexOf("safari") != -1) {
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browser.safari = true;
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browser.version = parseFloat(useragent.substring(useragent.indexOf('safari') + 7));
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} else if (useragent.indexOf("gecko") != -1) {
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browser.firefox = true;
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}
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if (browser.ie == true && browser.version == 7) {
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window["_ie_firstload"] = false;
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}
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// Accessor functions for obtaining specific elements of the page.
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function getHistoryFrame()
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{
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return document.getElementById('ie_historyFrame');
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}
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function getAnchorElement()
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{
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return document.getElementById('firefox_anchorDiv');
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}
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function getFormElement()
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{
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return document.getElementById('safari_formDiv');
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}
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function getRememberElement()
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{
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return document.getElementById("safari_remember_field");
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}
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/* Get the Flash player object for performing ExternalInterface callbacks. */
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function getPlayer(objectId) {
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var objectId = objectId || null;
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var player = null; /* AJH, needed? = document.getElementById(getPlayerId()); */
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if (browser.ie && objectId != null) {
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player = document.getElementById(objectId);
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}
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if (player == null) {
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player = document.getElementsByTagName('object')[0];
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}
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if (player == null || player.object == null) {
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player = document.getElementsByTagName('embed')[0];
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}
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return player;
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}
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function getPlayers() {
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var players = [];
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if (players.length == 0) {
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var tmp = document.getElementsByTagName('object');
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players = tmp;
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}
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if (players.length == 0 || players[0].object == null) {
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var tmp = document.getElementsByTagName('embed');
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players = tmp;
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}
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return players;
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}
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function getIframeHash() {
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var doc = getHistoryFrame().contentWindow.document;
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var hash = String(doc.location.search);
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if (hash.length == 1 && hash.charAt(0) == "?") {
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hash = "";
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}
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else if (hash.length >= 2 && hash.charAt(0) == "?") {
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hash = hash.substring(1);
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}
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return hash;
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}
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/* Get the current location hash excluding the '#' symbol. */
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function getHash() {
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// It would be nice if we could use document.location.hash here,
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// but it's faulty sometimes.
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var idx = document.location.href.indexOf('#');
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return (idx >= 0) ? document.location.href.substr(idx+1) : '';
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}
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/* Get the current location hash excluding the '#' symbol. */
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function setHash(hash) {
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// It would be nice if we could use document.location.hash here,
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// but it's faulty sometimes.
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if (hash == '') hash = '#'
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document.location.hash = hash;
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}
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function createState(baseUrl, newUrl, flexAppUrl) {
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return { 'baseUrl': baseUrl, 'newUrl': newUrl, 'flexAppUrl': flexAppUrl, 'title': null };
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}
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/* Add a history entry to the browser.
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* baseUrl: the portion of the location prior to the '#'
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* newUrl: the entire new URL, including '#' and following fragment
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* flexAppUrl: the portion of the location following the '#' only
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*/
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function addHistoryEntry(baseUrl, newUrl, flexAppUrl) {
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//delete all the history entries
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forwardStack = [];
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if (browser.ie) {
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//Check to see if we are being asked to do a navigate for the first
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//history entry, and if so ignore, because it's coming from the creation
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//of the history iframe
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if (flexAppUrl == defaultHash && document.location.href == initialHref && window['_ie_firstload']) {
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currentHref = initialHref;
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return;
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}
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if ((!flexAppUrl || flexAppUrl == defaultHash) && window['_ie_firstload']) {
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newUrl = baseUrl + '#' + defaultHash;
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flexAppUrl = defaultHash;
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} else {
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// for IE, tell the history frame to go somewhere without a '#'
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// in order to get this entry into the browser history.
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getHistoryFrame().src = historyFrameSourcePrefix + flexAppUrl;
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}
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setHash(flexAppUrl);
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} else {
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//ADR
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if (backStack.length == 0 && initialState.flexAppUrl == flexAppUrl) {
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initialState = createState(baseUrl, newUrl, flexAppUrl);
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} else if(backStack.length > 0 && backStack[backStack.length - 1].flexAppUrl == flexAppUrl) {
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backStack[backStack.length - 1] = createState(baseUrl, newUrl, flexAppUrl);
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}
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if (browser.safari) {
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// for Safari, submit a form whose action points to the desired URL
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if (browser.version <= 419.3) {
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var file = window.location.pathname.toString();
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file = file.substring(file.lastIndexOf("/")+1);
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getFormElement().innerHTML = '<form name="historyForm" action="'+file+'#' + flexAppUrl + '" method="GET"></form>';
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//get the current elements and add them to the form
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var qs = window.location.search.substring(1);
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var qs_arr = qs.split("&");
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for (var i = 0; i < qs_arr.length; i++) {
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var tmp = qs_arr[i].split("=");
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var elem = document.createElement("input");
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elem.type = "hidden";
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elem.name = tmp[0];
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elem.value = tmp[1];
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document.forms.historyForm.appendChild(elem);
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}
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document.forms.historyForm.submit();
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} else {
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top.location.hash = flexAppUrl;
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}
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// We also have to maintain the history by hand for Safari
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historyHash[history.length] = flexAppUrl;
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_storeStates();
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} else {
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// Otherwise, write an anchor into the page and tell the browser to go there
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addAnchor(flexAppUrl);
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setHash(flexAppUrl);
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}
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}
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backStack.push(createState(baseUrl, newUrl, flexAppUrl));
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}
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function _storeStates() {
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if (browser.safari) {
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getRememberElement().value = historyHash.join(",");
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}
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}
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function handleBackButton() {
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//The "current" page is always at the top of the history stack.
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var current = backStack.pop();
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if (!current) { return; }
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var last = backStack[backStack.length - 1];
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if (!last && backStack.length == 0){
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last = initialState;
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}
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forwardStack.push(current);
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}
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function handleForwardButton() {
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//summary: private method. Do not call this directly.
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var last = forwardStack.pop();
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if (!last) { return; }
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backStack.push(last);
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}
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function handleArbitraryUrl() {
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//delete all the history entries
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forwardStack = [];
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}
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/* Called periodically to poll to see if we need to detect navigation that has occurred */
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function checkForUrlChange() {
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if (browser.ie) {
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if (currentHref != document.location.href && currentHref + '#' != document.location.href) {
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//This occurs when the user has navigated to a specific URL
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//within the app, and didn't use browser back/forward
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//IE seems to have a bug where it stops updating the URL it
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//shows the end-user at this point, but programatically it
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//appears to be correct. Do a full app reload to get around
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//this issue.
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if (browser.version < 7) {
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currentHref = document.location.href;
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document.location.reload();
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} else {
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if (getHash() != getIframeHash()) {
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// this.iframe.src = this.blankURL + hash;
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var sourceToSet = historyFrameSourcePrefix + getHash();
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getHistoryFrame().src = sourceToSet;
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}
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}
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}
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}
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if (browser.safari) {
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// For Safari, we have to check to see if history.length changed.
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if (currentHistoryLength >= 0 && history.length != currentHistoryLength) {
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//alert("did change: " + history.length + ", " + historyHash.length + "|" + historyHash[history.length] + "|>" + historyHash.join("|"));
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// If it did change, then we have to look the old state up
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// in our hand-maintained array since document.location.hash
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// won't have changed, then call back into BrowserManager.
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currentHistoryLength = history.length;
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var flexAppUrl = historyHash[currentHistoryLength];
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if (flexAppUrl == '') {
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//flexAppUrl = defaultHash;
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}
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//ADR: to fix multiple
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if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
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var pl = getPlayers();
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for (var i = 0; i < pl.length; i++) {
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pl[i].browserURLChange(flexAppUrl);
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}
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} else {
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getPlayer().browserURLChange(flexAppUrl);
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}
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_storeStates();
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}
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}
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if (browser.firefox) {
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if (currentHref != document.location.href) {
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var bsl = backStack.length;
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var urlActions = {
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back: false,
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forward: false,
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set: false
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}
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if ((window.location.hash == initialHash || window.location.href == initialHref) && (bsl == 1)) {
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urlActions.back = true;
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// FIXME: could this ever be a forward button?
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// we can't clear it because we still need to check for forwards. Ugg.
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// clearInterval(this.locationTimer);
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handleBackButton();
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}
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// first check to see if we could have gone forward. We always halt on
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// a no-hash item.
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if (forwardStack.length > 0) {
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if (forwardStack[forwardStack.length-1].flexAppUrl == getHash()) {
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urlActions.forward = true;
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handleForwardButton();
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}
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}
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// ok, that didn't work, try someplace back in the history stack
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if ((bsl >= 2) && (backStack[bsl - 2])) {
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if (backStack[bsl - 2].flexAppUrl == getHash()) {
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urlActions.back = true;
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handleBackButton();
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}
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}
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if (!urlActions.back && !urlActions.forward) {
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var foundInStacks = {
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back: -1,
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forward: -1
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}
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for (var i = 0; i < backStack.length; i++) {
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if (backStack[i].flexAppUrl == getHash() && i != (bsl - 2)) {
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arbitraryUrl = true;
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foundInStacks.back = i;
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}
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}
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for (var i = 0; i < forwardStack.length; i++) {
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if (forwardStack[i].flexAppUrl == getHash() && i != (bsl - 2)) {
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arbitraryUrl = true;
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foundInStacks.forward = i;
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}
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}
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handleArbitraryUrl();
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}
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// Firefox changed; do a callback into BrowserManager to tell it.
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currentHref = document.location.href;
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var flexAppUrl = getHash();
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if (flexAppUrl == '') {
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//flexAppUrl = defaultHash;
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}
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//ADR: to fix multiple
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if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
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var pl = getPlayers();
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for (var i = 0; i < pl.length; i++) {
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pl[i].browserURLChange(flexAppUrl);
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}
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} else {
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||
|
|
getPlayer().browserURLChange(flexAppUrl);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
//setTimeout(checkForUrlChange, 50);
|
||
|
|
}
|
||
|
|
|
||
|
|
/* Write an anchor into the page to legitimize it as a URL for Firefox et al. */
|
||
|
|
function addAnchor(flexAppUrl)
|
||
|
|
{
|
||
|
|
if (document.getElementsByName(flexAppUrl).length == 0) {
|
||
|
|
getAnchorElement().innerHTML += "<a name='" + flexAppUrl + "'>" + flexAppUrl + "</a>";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var _initialize = function () {
|
||
|
|
if (browser.ie)
|
||
|
|
{
|
||
|
|
var scripts = document.getElementsByTagName('script');
|
||
|
|
for (var i = 0, s; s = scripts[i]; i++) {
|
||
|
|
if (s.src.indexOf("history.js") > -1) {
|
||
|
|
var iframe_location = (new String(s.src)).replace("history.js", "historyFrame.html");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
historyFrameSourcePrefix = iframe_location + "?";
|
||
|
|
var src = historyFrameSourcePrefix;
|
||
|
|
|
||
|
|
var iframe = document.createElement("iframe");
|
||
|
|
iframe.id = 'ie_historyFrame';
|
||
|
|
iframe.name = 'ie_historyFrame';
|
||
|
|
//iframe.src = historyFrameSourcePrefix;
|
||
|
|
try {
|
||
|
|
document.body.appendChild(iframe);
|
||
|
|
} catch(e) {
|
||
|
|
setTimeout(function() {
|
||
|
|
document.body.appendChild(iframe);
|
||
|
|
}, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (browser.safari)
|
||
|
|
{
|
||
|
|
var rememberDiv = document.createElement("div");
|
||
|
|
rememberDiv.id = 'safari_rememberDiv';
|
||
|
|
document.body.appendChild(rememberDiv);
|
||
|
|
rememberDiv.innerHTML = '<input type="text" id="safari_remember_field" style="width: 500px;">';
|
||
|
|
|
||
|
|
var formDiv = document.createElement("div");
|
||
|
|
formDiv.id = 'safari_formDiv';
|
||
|
|
document.body.appendChild(formDiv);
|
||
|
|
|
||
|
|
var reloader_content = document.createElement('div');
|
||
|
|
reloader_content.id = 'safarireloader';
|
||
|
|
var scripts = document.getElementsByTagName('script');
|
||
|
|
for (var i = 0, s; s = scripts[i]; i++) {
|
||
|
|
if (s.src.indexOf("history.js") > -1) {
|
||
|
|
html = (new String(s.src)).replace(".js", ".html");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
reloader_content.innerHTML = '<iframe id="safarireloader-iframe" src="about:blank" frameborder="no" scrolling="no"></iframe>';
|
||
|
|
document.body.appendChild(reloader_content);
|
||
|
|
reloader_content.style.position = 'absolute';
|
||
|
|
reloader_content.style.left = reloader_content.style.top = '-9999px';
|
||
|
|
iframe = reloader_content.getElementsByTagName('iframe')[0];
|
||
|
|
|
||
|
|
if (document.getElementById("safari_remember_field").value != "" ) {
|
||
|
|
historyHash = document.getElementById("safari_remember_field").value.split(",");
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (browser.firefox)
|
||
|
|
{
|
||
|
|
var anchorDiv = document.createElement("div");
|
||
|
|
anchorDiv.id = 'firefox_anchorDiv';
|
||
|
|
document.body.appendChild(anchorDiv);
|
||
|
|
}
|
||
|
|
|
||
|
|
//setTimeout(checkForUrlChange, 50);
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
historyHash: historyHash,
|
||
|
|
backStack: function() { return backStack; },
|
||
|
|
forwardStack: function() { return forwardStack },
|
||
|
|
getPlayer: getPlayer,
|
||
|
|
initialize: function(src) {
|
||
|
|
_initialize(src);
|
||
|
|
},
|
||
|
|
setURL: function(url) {
|
||
|
|
document.location.href = url;
|
||
|
|
},
|
||
|
|
getURL: function() {
|
||
|
|
return document.location.href;
|
||
|
|
},
|
||
|
|
getTitle: function() {
|
||
|
|
return document.title;
|
||
|
|
},
|
||
|
|
setTitle: function(title) {
|
||
|
|
try {
|
||
|
|
backStack[backStack.length - 1].title = title;
|
||
|
|
} catch(e) { }
|
||
|
|
//if on safari, set the title to be the empty string.
|
||
|
|
if (browser.safari) {
|
||
|
|
if (title == "") {
|
||
|
|
try {
|
||
|
|
var tmp = window.location.href.toString();
|
||
|
|
title = tmp.substring((tmp.lastIndexOf("/")+1), tmp.lastIndexOf("#"));
|
||
|
|
} catch(e) {
|
||
|
|
title = "";
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
document.title = title;
|
||
|
|
},
|
||
|
|
setDefaultURL: function(def)
|
||
|
|
{
|
||
|
|
defaultHash = def;
|
||
|
|
def = getHash();
|
||
|
|
//trailing ? is important else an extra frame gets added to the history
|
||
|
|
//when navigating back to the first page. Alternatively could check
|
||
|
|
//in history frame navigation to compare # and ?.
|
||
|
|
if (browser.ie)
|
||
|
|
{
|
||
|
|
window['_ie_firstload'] = true;
|
||
|
|
var sourceToSet = historyFrameSourcePrefix + def;
|
||
|
|
var func = function() {
|
||
|
|
getHistoryFrame().src = sourceToSet;
|
||
|
|
window.location.replace("#" + def);
|
||
|
|
setInterval(checkForUrlChange, 50);
|
||
|
|
}
|
||
|
|
try {
|
||
|
|
func();
|
||
|
|
} catch(e) {
|
||
|
|
window.setTimeout(function() { func(); }, 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (browser.safari)
|
||
|
|
{
|
||
|
|
currentHistoryLength = history.length;
|
||
|
|
if (historyHash.length == 0) {
|
||
|
|
historyHash[currentHistoryLength] = def;
|
||
|
|
var newloc = "#" + def;
|
||
|
|
window.location.replace(newloc);
|
||
|
|
} else {
|
||
|
|
//alert(historyHash[historyHash.length-1]);
|
||
|
|
}
|
||
|
|
//setHash(def);
|
||
|
|
setInterval(checkForUrlChange, 50);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
if (browser.firefox || browser.opera)
|
||
|
|
{
|
||
|
|
var reg = new RegExp("#" + def + "$");
|
||
|
|
if (window.location.toString().match(reg)) {
|
||
|
|
} else {
|
||
|
|
var newloc ="#" + def;
|
||
|
|
window.location.replace(newloc);
|
||
|
|
}
|
||
|
|
setInterval(checkForUrlChange, 50);
|
||
|
|
//setHash(def);
|
||
|
|
}
|
||
|
|
|
||
|
|
},
|
||
|
|
|
||
|
|
/* Set the current browser URL; called from inside BrowserManager to propagate
|
||
|
|
* the application state out to the container.
|
||
|
|
*/
|
||
|
|
setBrowserURL: function(flexAppUrl, objectId) {
|
||
|
|
if (browser.ie && typeof objectId != "undefined") {
|
||
|
|
currentObjectId = objectId;
|
||
|
|
}
|
||
|
|
//fromIframe = fromIframe || false;
|
||
|
|
//fromFlex = fromFlex || false;
|
||
|
|
//alert("setBrowserURL: " + flexAppUrl);
|
||
|
|
//flexAppUrl = (flexAppUrl == "") ? defaultHash : flexAppUrl ;
|
||
|
|
|
||
|
|
var pos = document.location.href.indexOf('#');
|
||
|
|
var baseUrl = pos != -1 ? document.location.href.substr(0, pos) : document.location.href;
|
||
|
|
var newUrl = baseUrl + '#' + flexAppUrl;
|
||
|
|
|
||
|
|
if (document.location.href != newUrl && document.location.href + '#' != newUrl) {
|
||
|
|
currentHref = newUrl;
|
||
|
|
addHistoryEntry(baseUrl, newUrl, flexAppUrl);
|
||
|
|
currentHistoryLength = history.length;
|
||
|
|
}
|
||
|
|
|
||
|
|
return false;
|
||
|
|
},
|
||
|
|
|
||
|
|
browserURLChange: function(flexAppUrl) {
|
||
|
|
var objectId = null;
|
||
|
|
if (browser.ie && currentObjectId != null) {
|
||
|
|
objectId = currentObjectId;
|
||
|
|
}
|
||
|
|
pendingURL = '';
|
||
|
|
|
||
|
|
if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
|
||
|
|
var pl = getPlayers();
|
||
|
|
for (var i = 0; i < pl.length; i++) {
|
||
|
|
try {
|
||
|
|
pl[i].browserURLChange(flexAppUrl);
|
||
|
|
} catch(e) { }
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
try {
|
||
|
|
getPlayer(objectId).browserURLChange(flexAppUrl);
|
||
|
|
} catch(e) { }
|
||
|
|
}
|
||
|
|
|
||
|
|
currentObjectId = null;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
})();
|
||
|
|
|
||
|
|
// Initialization
|
||
|
|
|
||
|
|
// Automated unit testing and other diagnostics
|
||
|
|
|
||
|
|
function setURL(url)
|
||
|
|
{
|
||
|
|
document.location.href = url;
|
||
|
|
}
|
||
|
|
|
||
|
|
function backButton()
|
||
|
|
{
|
||
|
|
history.back();
|
||
|
|
}
|
||
|
|
|
||
|
|
function forwardButton()
|
||
|
|
{
|
||
|
|
history.forward();
|
||
|
|
}
|
||
|
|
|
||
|
|
function goForwardOrBackInHistory(step)
|
||
|
|
{
|
||
|
|
history.go(step);
|
||
|
|
}
|
||
|
|
|
||
|
|
//BrowserHistoryUtils.addEvent(window, "load", function() { BrowserHistory.initialize(); });
|
||
|
|
(function(i) {
|
||
|
|
var u =navigator.userAgent;var e=/*@cc_on!@*/false;
|
||
|
|
var st = setTimeout;
|
||
|
|
if(/webkit/i.test(u)){
|
||
|
|
st(function(){
|
||
|
|
var dr=document.readyState;
|
||
|
|
if(dr=="loaded"||dr=="complete"){i()}
|
||
|
|
else{st(arguments.callee,10);}},10);
|
||
|
|
} else if((/mozilla/i.test(u)&&!/(compati)/.test(u)) || (/opera/i.test(u))){
|
||
|
|
document.addEventListener("DOMContentLoaded",i,false);
|
||
|
|
} else if(e){
|
||
|
|
(function(){
|
||
|
|
var t=document.createElement('doc:rdy');
|
||
|
|
try{t.doScroll('left');
|
||
|
|
i();t=null;
|
||
|
|
}catch(e){st(arguments.callee,0);}})();
|
||
|
|
} else{
|
||
|
|
window.onload=i;
|
||
|
|
}
|
||
|
|
})( function() {BrowserHistory.initialize();} );
|