BrowserHistoryUtils={
addEvent:function(elm,evType,fn,useCapture){
useCapture=useCapture||false;
if(elm.addEventListener){
elm.addEventListener(evType,fn,useCapture);
return true;
}
else if(elm.attachEvent){
var r=elm.attachEvent('on'+evType,fn);
return r;
}
else{
elm['on'+evType]=fn;
}
}
}
BrowserHistory=(function(){
var browser={
ie:false,
firefox:false,
safari:false,
opera:false,
version:-1
};
var defaultHash='';
var currentHref=document.location.href;
var initialHref=document.location.href;
var initialHash=document.location.hash;
var historyFrameSourcePrefix='history/historyFrame.html?';
var currentHistoryLength=-1;
var historyHash=[];
var initialState=createState(initialHref,initialHref+'#'+initialHash,initialHash);
var backStack=[];
var forwardStack=[];
var currentObjectId=null;
var useragent=navigator.userAgent.toLowerCase();
if(useragent.indexOf("opera")!=-1){
browser.opera=true;
}else if(useragent.indexOf("msie")!=-1){
browser.ie=true;
browser.version=parseFloat(useragent.substring(useragent.indexOf('msie')+4));
}else if(useragent.indexOf("safari")!=-1){
browser.safari=true;
browser.version=parseFloat(useragent.substring(useragent.indexOf('safari')+7));
}else if(useragent.indexOf("gecko")!=-1){
browser.firefox=true;
}
if(browser.ie==true&&browser.version==7){
window["_ie_firstload"]=false;
}
function getHistoryFrame()
{
return document.getElementById('ie_historyFrame');
}
function getAnchorElement()
{
return document.getElementById('firefox_anchorDiv');
}
function getFormElement()
{
return document.getElementById('safari_formDiv');
}
function getRememberElement()
{
return document.getElementById("safari_remember_field");
}
function getPlayer(objectId){
var objectId=objectId||null;
var player=null;
if(browser.ie&&objectId!=null){
player=document.getElementById(objectId);
}
if(player==null){
player=document.getElementsByTagName('object')[0];
}
if(player==null||player.object==null){
player=document.getElementsByTagName('embed')[0];
}
return player;
}
function getPlayers(){
var players=[];
if(players.length==0){
var tmp=document.getElementsByTagName('object');
players=tmp;
}
if(players.length==0||players[0].object==null){
var tmp=document.getElementsByTagName('embed');
players=tmp;
}
return players;
}
function getIframeHash(){
var doc=getHistoryFrame().contentWindow.document;
var hash=String(doc.location.search);
if(hash.length==1&&hash.charAt(0)=="?"){
hash="";
}
else if(hash.length>=2&&hash.charAt(0)=="?"){
hash=hash.substring(1);
}
return hash;
}
function getHash(){
var idx=document.location.href.indexOf('#');
return(idx>=0)?document.location.href.substr(idx+1):'';
}
function setHash(hash){
if(hash=='')hash='#'
document.location.hash=hash;
}
function createState(baseUrl,newUrl,flexAppUrl){
return{'baseUrl':baseUrl,'newUrl':newUrl,'flexAppUrl':flexAppUrl,'title':null};
}
function addHistoryEntry(baseUrl,newUrl,flexAppUrl){
forwardStack=[];
if(browser.ie){
if(flexAppUrl==defaultHash&&document.location.href==initialHref&&window['_ie_firstload']){
currentHref=initialHref;
return;
}
if((!flexAppUrl||flexAppUrl==defaultHash)&&window['_ie_firstload']){
newUrl=baseUrl+'#'+defaultHash;
flexAppUrl=defaultHash;
}else{
getHistoryFrame().src=historyFrameSourcePrefix+flexAppUrl;
}
setHash(flexAppUrl);
}else{
if(backStack.length==0&&initialState.flexAppUrl==flexAppUrl){
initialState=createState(baseUrl,newUrl,flexAppUrl);
}else if(backStack.length>0&&backStack[backStack.length-1].flexAppUrl==flexAppUrl){
backStack[backStack.length-1]=createState(baseUrl,newUrl,flexAppUrl);
}
if(browser.safari){
if(browser.version<=419.3){
var file=window.location.pathname.toString();
file=file.substring(file.lastIndexOf("/")+1);
getFormElement().innerHTML='<form name="historyForm" action="'+file+'#'+flexAppUrl+'" method="GET"></form>';
var qs=window.location.search.substring(1);
var qs_arr=qs.split("&");
for(var i=0;i<qs_arr.length;i++){
var tmp=qs_arr[i].split("=");
var elem=document.createElement("input");
elem.type="hidden";
elem.name=tmp[0];
elem.value=tmp[1];
document.forms.historyForm.appendChild(elem);
}
document.forms.historyForm.submit();
}else{
top.location.hash=flexAppUrl;
}
historyHash[history.length]=flexAppUrl;
_storeStates();
}else{
addAnchor(flexAppUrl);
setHash(flexAppUrl);
}
}
backStack.push(createState(baseUrl,newUrl,flexAppUrl));
}
function _storeStates(){
if(browser.safari){
getRememberElement().value=historyHash.join(",");
}
}
function handleBackButton(){
var current=backStack.pop();
if(!current){return;}
var last=backStack[backStack.length-1];
if(!last&&backStack.length==0){
last=initialState;
}
forwardStack.push(current);
}
function handleForwardButton(){
var last=forwardStack.pop();
if(!last){return;}
backStack.push(last);
}
function handleArbitraryUrl(){
forwardStack=[];
}
function checkForUrlChange(){
if(browser.ie){
if(currentHref!=document.location.href&&currentHref+'#'!=document.location.href){
if(browser.version<7){
currentHref=document.location.href;
document.location.reload();
}else{
if(getHash()!=getIframeHash()){
var sourceToSet=historyFrameSourcePrefix+getHash();
getHistoryFrame().src=sourceToSet;
}
}
}
}
if(browser.safari){
if(currentHistoryLength>=0&&history.length!=currentHistoryLength){
currentHistoryLength=history.length;
var flexAppUrl=historyHash[currentHistoryLength];
if(flexAppUrl==''){
}
if(typeof BrowserHistory_multiple!="undefined"&&BrowserHistory_multiple==true){
var pl=getPlayers();
for(var i=0;i<pl.length;i++){
pl[i].browserURLChange(flexAppUrl);
}
}else{
getPlayer().browserURLChange(flexAppUrl);
}
_storeStates();
}
}
if(browser.firefox){
if(currentHref!=document.location.href){
var bsl=backStack.length;
var urlActions={
back:false,
forward:false,
set:false
}
if((window.location.hash==initialHash||window.location.href==initialHref)&&(bsl==1)){
urlActions.back=true;
handleBackButton();
}
if(forwardStack.length>0){
if(forwardStack[forwardStack.length-1].flexAppUrl==getHash()){
urlActions.forward=true;
handleForwardButton();
}
}
if((bsl>=2)&&(backStack[bsl-2])){
if(backStack[bsl-2].flexAppUrl==getHash()){
urlActions.back=true;
handleBackButton();
}
}
if(!urlActions.back&&!urlActions.forward){
var foundInStacks={
back:-1,
forward:-1
}
for(var i=0;i<backStack.length;i++){
if(backStack[i].flexAppUrl==getHash()&&i!=(bsl-2)){
arbitraryUrl=true;
foundInStacks.back=i;
}
}
for(var i=0;i<forwardStack.length;i++){
if(forwardStack[i].flexAppUrl==getHash()&&i!=(bsl-2)){
arbitraryUrl=true;
foundInStacks.forward=i;
}
}
handleArbitraryUrl();
}
currentHref=document.location.href;
var flexAppUrl=getHash();
if(flexAppUrl==''){
}
if(typeof BrowserHistory_multiple!="undefined"&&BrowserHistory_multiple==true){
var pl=getPlayers();
for(var i=0;i<pl.length;i++){
pl[i].browserURLChange(flexAppUrl);
}
}else{
getPlayer().browserURLChange(flexAppUrl);
}
}
}
}
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';
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);
}
}
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(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();
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{
}
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);
}
},
setBrowserURL:function(flexAppUrl,objectId){
if(browser.ie&&typeof objectId!="undefined"){
currentObjectId=objectId;
}
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;
}
}
})();
function setURL(url)
{
document.location.href=url;
}
function backButton()
{
history.back();
}
function forwardButton()
{
history.forward();
}
function goForwardOrBackInHistory(step)
{
history.go(step);
}
(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();});