YAHOO.util.History = (function () { var _histFrame = null; var _stateField = null; var _initialized = false; var _modules = []; var _fqstates = []; function _getHash() { var i, href; href = top.location.href; i = href.indexOf("#"); return i >= 0 ? href.substr(i + 1) : null; } function _storeStates() { var moduleName, moduleObj, initialStates = [], currentStates = []; for (moduleName in _modules) { if (YAHOO.lang.hasOwnProperty(_modules, moduleName)) { moduleObj = _modules[moduleName]; initialStates.push(moduleName + "=" + moduleObj.initialState); currentStates.push(moduleName + "=" + moduleObj.currentState); } } _stateField.value = initialStates.join("&") + "|" + currentStates.join("&"); if (YAHOO.env.ua.webkit) { _stateField.value += "|" + _fqstates.join(","); } } function _handleFQStateChange(fqstate) { var i, len, moduleName, moduleObj, modules, states, tokens, currentState; if (!fqstate) { for (moduleName in _modules) { if (YAHOO.lang.hasOwnProperty(_modules, moduleName)) { moduleObj = _modules[moduleName]; moduleObj.currentState = moduleObj.initialState; moduleObj.onStateChange(unescape(moduleObj.currentState)); } } return; } modules = []; //Change by LinhBC modules["navbar"] = fqstate; //End of change by LinhBC for (moduleName in _modules) { if (YAHOO.lang.hasOwnProperty(_modules, moduleName)) { moduleObj = _modules[moduleName]; currentState = modules[moduleName]; if (!currentState || moduleObj.currentState !== currentState) { moduleObj.currentState = currentState || moduleObj.initialState; moduleObj.onStateChange(unescape(moduleObj.currentState)); } } } } function _updateIFrame(fqstate) { var html, doc; html = '

' + fqstate + '

'; try { doc = _histFrame.contentWindow.document; doc.open(); doc.write(html); doc.close(); return true; } catch (e) { return false; } } function _checkIframeLoaded() { var doc, elem, fqstate, hash; if (!_histFrame.contentWindow || !_histFrame.contentWindow.document) { // Check again in 10 msec... setTimeout(_checkIframeLoaded, 10); return; } doc = _histFrame.contentWindow.document; elem = doc.getElementById("state"); fqstate = elem ? elem.innerText : null; hash = _getHash(); setInterval(function () { var newfqstate, states, moduleName, moduleObj, newHash, historyLength; doc = _histFrame.contentWindow.document; elem = doc.getElementById("state"); newfqstate = elem ? elem.innerText : null; newHash = _getHash(); if (newfqstate !== fqstate) { fqstate = newfqstate; _handleFQStateChange(fqstate); if (!fqstate) { states = []; for (moduleName in _modules) { if (YAHOO.lang.hasOwnProperty(_modules, moduleName)) { moduleObj = _modules[moduleName]; states.push(moduleName + "=" + moduleObj.initialState); } } newHash = states.join("&"); } else { newHash = fqstate; } top.location.hash = newHash; hash = newHash; _storeStates(); } else if (newHash !== hash) { hash = newHash; _updateIFrame(newHash); } }, 50); _initialized = true; YAHOO.util.History.onLoadEvent.fire(); } function _initialize() { var i, len, parts, tokens, moduleName, moduleObj, initialStates, initialState, currentStates, currentState, counter, hash; parts = _stateField.value.split("|"); if (parts.length > 1) { initialStates = parts[0].split("&"); for (i = 0,len = initialStates.length; i < len; i++) { tokens = initialStates[i].split("="); if (tokens.length === 2) { moduleName = tokens[0]; initialState = tokens[1]; moduleObj = _modules[moduleName]; if (moduleObj) { moduleObj.initialState = initialState; } } } currentStates = parts[1].split("&"); for (i = 0,len = currentStates.length; i < len; i++) { tokens = currentStates[i].split("="); if (tokens.length >= 2) { moduleName = tokens[0]; currentState = tokens[1]; moduleObj = _modules[moduleName]; if (moduleObj) { moduleObj.currentState = currentState; } } } } if (parts.length > 2) { _fqstates = parts[2].split(","); } if (YAHOO.env.ua.ie) { if (typeof document.documentMode === "undefined" || document.documentMode < 8) { _checkIframeLoaded(); } else { YAHOO.util.Event.on(top, "hashchange", function () { var hash = _getHash(); _handleFQStateChange(hash); _storeStates(); }); _initialized = true; YAHOO.util.History.onLoadEvent.fire(); } } else { counter = history.length; hash = _getHash(); setInterval(function () { var state, newHash, newCounter; newHash = _getHash(); newCounter = history.length; if (newHash !== hash) { hash = newHash; counter = newCounter; _handleFQStateChange(hash); _storeStates(); } else if (newCounter !== counter && YAHOO.env.ua.webkit) { hash = newHash; counter = newCounter; state = _fqstates[counter - 1]; _handleFQStateChange(state); _storeStates(); } }, 50); _initialized = true; YAHOO.util.History.onLoadEvent.fire(); } } return { onLoadEvent: new YAHOO.util.CustomEvent("onLoad"), onReady: function (fn, obj, overrideContext) { if (_initialized) { setTimeout(function () { var ctx = window; if (overrideContext) { if (overrideContext === true) { ctx = obj; } else { ctx = overrideContext; } } fn.call(ctx, "onLoad", [], obj); }, 0); } else { YAHOO.util.History.onLoadEvent.subscribe(fn, obj, overrideContext); } }, register: function (module, initialState, onStateChange, obj, overrideContext) { var scope, wrappedFn; if (typeof module !== "string" || YAHOO.lang.trim(module) === "" || typeof initialState !== "string" || typeof onStateChange !== "function") { throw new Error("Missing or invalid argument"); } if (_modules[module]) { return; } if (_initialized) { throw new Error("All modules must be registered before calling YAHOO.util.History.initialize"); } module = escape(module); initialState = escape(initialState); scope = null; if (overrideContext === true) { scope = obj; } else { scope = overrideContext; } wrappedFn = function (state) { return onStateChange.call(scope, state, obj); }; _modules[module] = { name: module, initialState: initialState, currentState: initialState, onStateChange: wrappedFn }; }, initialize: function (stateField, histFrame) { if (_initialized) { return; } if (YAHOO.env.ua.opera && typeof history.navigationMode !== "undefined") { history.navigationMode = "compatible"; } if (typeof stateField === "string") { stateField = document.getElementById(stateField); } if (!stateField || stateField.tagName.toUpperCase() !== "TEXTAREA" && (stateField.tagName.toUpperCase() !== "INPUT" || stateField.type !== "hidden" && stateField.type !== "text")) { throw new Error("Missing or invalid argument"); } _stateField = stateField; if (YAHOO.env.ua.ie && (typeof document.documentMode === "undefined" || document.documentMode < 8)) { if (typeof histFrame === "string") { histFrame = document.getElementById(histFrame); } if (!histFrame || histFrame.tagName.toUpperCase() !== "IFRAME") { throw new Error("Missing or invalid argument"); } _histFrame = histFrame; } YAHOO.util.Event.onDOMReady(_initialize); }, navigate: function (module, state) { var states; if (typeof module !== "string" || typeof state !== "string") { throw new Error("Missing or invalid argument"); } states = {}; states[module] = state; return YAHOO.util.History.multiNavigate(states); }, multiNavigate: function (states) { var currentStates, moduleName, moduleObj, currentState, fqstate; if (typeof states !== "object") { throw new Error("Missing or invalid argument"); } if (!_initialized) { throw new Error("The Browser History Manager is not initialized"); } for (moduleName in states) { if (!_modules[moduleName]) { throw new Error("The following module has not been registered: " + moduleName); } } currentStates = []; for (moduleName in _modules) { if (YAHOO.lang.hasOwnProperty(_modules, moduleName)) { moduleObj = _modules[moduleName]; if (YAHOO.lang.hasOwnProperty(states, moduleName)) { currentState = states[unescape(moduleName)]; } else { currentState = unescape(moduleObj.currentState); } moduleName = escape(moduleName); currentState = escape(currentState); currentStates.push(moduleName + "=" + currentState); } } fqstate = currentStates.join("&"); if (YAHOO.env.ua.ie && (typeof document.documentMode === "undefined" || document.documentMode < 8)) { //Change by LinhBC return _updateIFrame(currentState); //End of Change by LinhBC } else { //Change by LinhBC top.location.hash = currentState; //End of Change by LinhBC if (YAHOO.env.ua.webkit) { _fqstates[history.length] = fqstate; _storeStates(); } return true; } }, getCurrentState: function (module) { var moduleObj; if (typeof module !== "string") { throw new Error("Missing or invalid argument"); } if (!_initialized) { throw new Error("The Browser History Manager is not initialized"); } moduleObj = _modules[module]; if (!moduleObj) { throw new Error("No such registered module: " + module); } return unescape(moduleObj.currentState); }, getBookmarkedState: function (module) { var idx; if (typeof module !== "string") { throw new Error("Missing or invalid argument"); } idx = top.location.href.indexOf("#"); if (idx >= 0) { //Change by LinhBC return unescape(top.location.href.substr(idx + 1)); //End of Change by LinhBC } return null; }, getQueryStringParameter: function (paramName, url) { var i, len, idx, queryString, params, tokens; url = url || top.location.href; idx = url.indexOf("?"); queryString = idx >= 0 ? url.substr(idx + 1) : url; // Remove the hash if any idx = queryString.lastIndexOf("#"); queryString = idx >= 0 ? queryString.substr(0, idx) : queryString; params = queryString.split("&"); for (i = 0,len = params.length; i < len; i++) { tokens = params[i].split("="); if (tokens.length >= 2) { if (tokens[0] === paramName) { return unescape(tokens[1]); } } } return null; } }; })(); YAHOO.register("history", YAHOO.util.History, {version: "2.8.0r4", build: "2449"});