interpreter/preprocessor/faust-0.9.47mr3/tools/faust2flash_v0.1/Step_2_FlashBuilder_project/html-template/history/history.js

   1 BrowserHistoryUtils = {
   2     addEvent: function(elm, evType, fn, useCapture) {
   3         useCapture = useCapture || false;
   4         if (elm.addEventListener) {
   5             elm.addEventListener(evType, fn, useCapture);
   6             return true;
   7         }
   8         else if (elm.attachEvent) {
   9             var r = elm.attachEvent('on' + evType, fn);
  10             return r;
  11         }
  12         else {
  13             elm['on' + evType] = fn;
  14         }
  15     }
  16 }
  17
  18 BrowserHistory = (function() {
  19     // type of browser
  20     var browser = {
  21         ie: false,
  22         firefox: false,
  23         safari: false,
  24         opera: false,
  25         version: -1
  26     };
  27
  28     // if setDefaultURL has been called, our first clue
  29     // that the SWF is ready and listening
  30     //var swfReady = false;
  31
  32     // the URL we'll send to the SWF once it is ready
  33     //var pendingURL = '';
  34
  35     // Default app state URL to use when no fragment ID present
  36     var defaultHash = '';
  37
  38     // Last-known app state URL
  39     var currentHref = document.location.href;
  40
  41     // Initial URL (used only by IE)
  42     var initialHref = document.location.href;
  43
  44     // Initial URL (used only by IE)
  45     var initialHash = document.location.hash;
  46
  47     // History frame source URL prefix (used only by IE)
  48     var historyFrameSourcePrefix = 'history/historyFrame.html?';
  49
  50     // History maintenance (used only by Safari)
  51     var currentHistoryLength = -1;
  52
  53     var historyHash = [];
  54
  55     var initialState = createState(initialHref, initialHref + '#' + initialHash, initialHash);
  56
  57     var backStack = [];
  58     var forwardStack = [];
  59
  60     var currentObjectId = null;
  61
  62     //UserAgent detection
  63     var useragent = navigator.userAgent.toLowerCase();
  64
  65     if (useragent.indexOf("opera") != -1) {
  66         browser.opera = true;
  67     } else if (useragent.indexOf("msie") != -1) {
  68         browser.ie = true;
  69         browser.version = parseFloat(useragent.substring(useragent.indexOf('msie') + 4));
  70     } else if (useragent.indexOf("safari") != -1) {
  71         browser.safari = true;
  72         browser.version = parseFloat(useragent.substring(useragent.indexOf('safari') + 7));
  73     } else if (useragent.indexOf("gecko") != -1) {
  74         browser.firefox = true;
  75     }
  76
  77     if (browser.ie == true && browser.version == 7) {
  78         window["_ie_firstload"] = false;
  79     }
  80
  81     // Accessor functions for obtaining specific elements of the page.
  82     function getHistoryFrame()
  83     {
  84         return document.getElementById('ie_historyFrame');
  85     }
  86
  87     function getAnchorElement()
  88     {
  89         return document.getElementById('firefox_anchorDiv');
  90     }
  91
  92     function getFormElement()
  93     {
  94         return document.getElementById('safari_formDiv');
  95     }
  96
  97     function getRememberElement()
  98     {
  99         return document.getElementById("safari_remember_field");
 100     }
 101
 102     // Get the Flash player object for performing ExternalInterface callbacks.
 103     // Updated for changes to SWFObject2.
 104     function getPlayer(id) {
 105                 if (id && document.getElementById(id)) {
 106                         var r = document.getElementById(id);
 107                         if (typeof r.SetVariable != "undefined") {
 108                                 return r;
 109                         }
 110                         else {
 111                                 var o = r.getElementsByTagName("object");
 112                                 var e = r.getElementsByTagName("embed");
 113                                 if (o.length > 0 && typeof o[0].SetVariable != "undefined") {
 114                                         return o[0];
 115                                 }
 116                                 else if (e.length > 0 && typeof e[0].SetVariable != "undefined") {
 117                                         return e[0];
 118                                 }
 119                         }
 120                 }
 121                 else {
 122                         var o = document.getElementsByTagName("object");
 123                         var e = document.getElementsByTagName("embed");
 124                         if (e.length > 0 && typeof e[0].SetVariable != "undefined") {
 125                                 return e[0];
 126                         }
 127                         else if (o.length > 0 && typeof o[0].SetVariable != "undefined") {
 128                                 return o[0];
 129                         }
 130                         else if (o.length > 1 && typeof o[1].SetVariable != "undefined") {
 131                                 return o[1];
 132                         }
 133                 }
 134                 return undefined;
 135         }
 136
 137     function getPlayers() {
 138         var players = [];
 139         if (players.length == 0) {
 140             var tmp = document.getElementsByTagName('object');
 141             players = tmp;
 142         }
 143
 144         if (players.length == 0 || players[0].object == null) {
 145             var tmp = document.getElementsByTagName('embed');
 146             players = tmp;
 147         }
 148         return players;
 149     }
 150
 151         function getIframeHash() {
 152                 var doc = getHistoryFrame().contentWindow.document;
 153                 var hash = String(doc.location.search);
 154                 if (hash.length == 1 && hash.charAt(0) == "?") {
 155                         hash = "";
 156                 }
 157                 else if (hash.length >= 2 && hash.charAt(0) == "?") {
 158                         hash = hash.substring(1);
 159                 }
 160                 return hash;
 161         }
 162
 163     /* Get the current location hash excluding the '#' symbol. */
 164     function getHash() {
 165        // It would be nice if we could use document.location.hash here,
 166        // but it's faulty sometimes.
 167        var idx = document.location.href.indexOf('#');
 168        return (idx >= 0) ? document.location.href.substr(idx+1) : '';
 169     }
 170
 171     /* Get the current location hash excluding the '#' symbol. */
 172     function setHash(hash) {
 173        // It would be nice if we could use document.location.hash here,
 174        // but it's faulty sometimes.
 175        if (hash == '') hash = '#'
 176        document.location.hash = hash;
 177     }
 178
 179     function createState(baseUrl, newUrl, flexAppUrl) {
 180         return { 'baseUrl': baseUrl, 'newUrl': newUrl, 'flexAppUrl': flexAppUrl, 'title': null };
 181     }
 182
 183     /* Add a history entry to the browser.
 184      *   baseUrl: the portion of the location prior to the '#'
 185      *   newUrl: the entire new URL, including '#' and following fragment
 186      *   flexAppUrl: the portion of the location following the '#' only
 187      */
 188     function addHistoryEntry(baseUrl, newUrl, flexAppUrl) {
 189
 190         //delete all the history entries
 191         forwardStack = [];
 192
 193         if (browser.ie) {
 194             //Check to see if we are being asked to do a navigate for the first
 195             //history entry, and if so ignore, because it's coming from the creation
 196             //of the history iframe
 197             if (flexAppUrl == defaultHash && document.location.href == initialHref && window['_ie_firstload']) {
 198                 currentHref = initialHref;
 199                 return;
 200             }
 201             if ((!flexAppUrl || flexAppUrl == defaultHash) && window['_ie_firstload']) {
 202                 newUrl = baseUrl + '#' + defaultHash;
 203                 flexAppUrl = defaultHash;
 204             } else {
 205                 // for IE, tell the history frame to go somewhere without a '#'
 206                 // in order to get this entry into the browser history.
 207                 getHistoryFrame().src = historyFrameSourcePrefix + flexAppUrl;
 208             }
 209             setHash(flexAppUrl);
 210         } else {
 211
 212             //ADR
 213             if (backStack.length == 0 && initialState.flexAppUrl == flexAppUrl) {
 214                 initialState = createState(baseUrl, newUrl, flexAppUrl);
 215             } else if(backStack.length > 0 && backStack[backStack.length - 1].flexAppUrl == flexAppUrl) {
 216                 backStack[backStack.length - 1] = createState(baseUrl, newUrl, flexAppUrl);
 217             }
 218
 219             if (browser.safari) {
 220                 // for Safari, submit a form whose action points to the desired URL
 221                 if (browser.version <= 419.3) {
 222                     var file = window.location.pathname.toString();
 223                     file = file.substring(file.lastIndexOf("/")+1);
 224                     getFormElement().innerHTML = '<form name="historyForm" action="'+file+'#' + flexAppUrl + '" method="GET"></form>';
 225                     //get the current elements and add them to the form
 226                     var qs = window.location.search.substring(1);
 227                     var qs_arr = qs.split("&");
 228                     for (var i = 0; i < qs_arr.length; i++) {
 229                         var tmp = qs_arr[i].split("=");
 230                         var elem = document.createElement("input");
 231                         elem.type = "hidden";
 232                         elem.name = tmp[0];
 233                         elem.value = tmp[1];
 234                         document.forms.historyForm.appendChild(elem);
 235                     }
 236                     document.forms.historyForm.submit();
 237                 } else {
 238                     top.location.hash = flexAppUrl;
 239                 }
 240                 // We also have to maintain the history by hand for Safari
 241                 historyHash[history.length] = flexAppUrl;
 242                 _storeStates();
 243             } else {
 244                 // Otherwise, write an anchor into the page and tell the browser to go there
 245                 addAnchor(flexAppUrl);
 246                 setHash(flexAppUrl);
 247             }
 248         }
 249         backStack.push(createState(baseUrl, newUrl, flexAppUrl));
 250     }
 251
 252     function _storeStates() {
 253         if (browser.safari) {
 254             getRememberElement().value = historyHash.join(",");
 255         }
 256     }
 257
 258     function handleBackButton() {
 259         //The "current" page is always at the top of the history stack.
 260         var current = backStack.pop();
 261         if (!current) { return; }
 262         var last = backStack[backStack.length - 1];
 263         if (!last && backStack.length == 0){
 264             last = initialState;
 265         }
 266         forwardStack.push(current);
 267     }
 268
 269     function handleForwardButton() {
 270         //summary: private method. Do not call this directly.
 271
 272         var last = forwardStack.pop();
 273         if (!last) { return; }
 274         backStack.push(last);
 275     }
 276
 277     function handleArbitraryUrl() {
 278         //delete all the history entries
 279         forwardStack = [];
 280     }
 281
 282     /* Called periodically to poll to see if we need to detect navigation that has occurred */
 283     function checkForUrlChange() {
 284
 285         if (browser.ie) {
 286             if (currentHref != document.location.href && currentHref + '#' != document.location.href) {
 287                 //This occurs when the user has navigated to a specific URL
 288                 //within the app, and didn't use browser back/forward
 289                 //IE seems to have a bug where it stops updating the URL it
 290                 //shows the end-user at this point, but programatically it
 291                 //appears to be correct.  Do a full app reload to get around
 292                 //this issue.
 293                 if (browser.version < 7) {
 294                     currentHref = document.location.href;
 295                     document.location.reload();
 296                 } else {
 297                                         if (getHash() != getIframeHash()) {
 298                                                 // this.iframe.src = this.blankURL + hash;
 299                                                 var sourceToSet = historyFrameSourcePrefix + getHash();
 300                                                 getHistoryFrame().src = sourceToSet;
 301                                         }
 302                 }
 303             }
 304         }
 305
 306         if (browser.safari) {
 307             // For Safari, we have to check to see if history.length changed.
 308             if (currentHistoryLength >= 0 && history.length != currentHistoryLength) {
 309                 //alert("did change: " + history.length + ", " + historyHash.length + "|" + historyHash[history.length] + "|>" + historyHash.join("|"));
 310                 // If it did change, then we have to look the old state up
 311                 // in our hand-maintained array since document.location.hash
 312                 // won't have changed, then call back into BrowserManager.
 313                 currentHistoryLength = history.length;
 314                 var flexAppUrl = historyHash[currentHistoryLength];
 315                 if (flexAppUrl == '') {
 316                     //flexAppUrl = defaultHash;
 317                 }
 318                 //ADR: to fix multiple
 319                 if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
 320                     var pl = getPlayers();
 321                     for (var i = 0; i < pl.length; i++) {
 322                         pl[i].browserURLChange(flexAppUrl);
 323                     }
 324                 } else {
 325                     getPlayer().browserURLChange(flexAppUrl);
 326                 }
 327                 _storeStates();
 328             }
 329         }
 330         if (browser.firefox) {
 331             if (currentHref != document.location.href) {
 332                 var bsl = backStack.length;
 333
 334                 var urlActions = {
 335                     back: false,
 336                     forward: false,
 337                     set: false
 338                 }
 339
 340                 if ((window.location.hash == initialHash || window.location.href == initialHref) && (bsl == 1)) {
 341                     urlActions.back = true;
 342                     // FIXME: could this ever be a forward button?
 343                     // we can't clear it because we still need to check for forwards. Ugg.
 344                     // clearInterval(this.locationTimer);
 345                     handleBackButton();
 346                 }
 347
 348                 // first check to see if we could have gone forward. We always halt on
 349                 // a no-hash item.
 350                 if (forwardStack.length > 0) {
 351                     if (forwardStack[forwardStack.length-1].flexAppUrl == getHash()) {
 352                         urlActions.forward = true;
 353                         handleForwardButton();
 354                     }
 355                 }
 356
 357                 // ok, that didn't work, try someplace back in the history stack
 358                 if ((bsl >= 2) && (backStack[bsl - 2])) {
 359                     if (backStack[bsl - 2].flexAppUrl == getHash()) {
 360                         urlActions.back = true;
 361                         handleBackButton();
 362                     }
 363                 }
 364
 365                 if (!urlActions.back && !urlActions.forward) {
 366                     var foundInStacks = {
 367                         back: -1,
 368                         forward: -1
 369                     }
 370
 371                     for (var i = 0; i < backStack.length; i++) {
 372                         if (backStack[i].flexAppUrl == getHash() && i != (bsl - 2)) {
 373                             arbitraryUrl = true;
 374                             foundInStacks.back = i;
 375                         }
 376                     }
 377                     for (var i = 0; i < forwardStack.length; i++) {
 378                         if (forwardStack[i].flexAppUrl == getHash() && i != (bsl - 2)) {
 379                             arbitraryUrl = true;
 380                             foundInStacks.forward = i;
 381                         }
 382                     }
 383                     handleArbitraryUrl();
 384                 }
 385
 386                 // Firefox changed; do a callback into BrowserManager to tell it.
 387                 currentHref = document.location.href;
 388                 var flexAppUrl = getHash();
 389                 if (flexAppUrl == '') {
 390                     //flexAppUrl = defaultHash;
 391                 }
 392                 //ADR: to fix multiple
 393                 if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
 394                     var pl = getPlayers();
 395                     for (var i = 0; i < pl.length; i++) {
 396                         pl[i].browserURLChange(flexAppUrl);
 397                     }
 398                 } else {
 399                     getPlayer().browserURLChange(flexAppUrl);
 400                 }
 401             }
 402         }
 403         //setTimeout(checkForUrlChange, 50);
 404     }
 405
 406     /* Write an anchor into the page to legitimize it as a URL for Firefox et al. */
 407     function addAnchor(flexAppUrl)
 408     {
 409        if (document.getElementsByName(flexAppUrl).length == 0) {
 410            getAnchorElement().innerHTML += "<a name='" + flexAppUrl + "'>" + flexAppUrl + "</a>";
 411        }
 412     }
 413
 414     var _initialize = function () {
 415         if (browser.ie)
 416         {
 417             var scripts = document.getElementsByTagName('script');
 418             for (var i = 0, s; s = scripts[i]; i++) {
 419                 if (s.src.indexOf("history.js") > -1) {
 420                     var iframe_location = (new String(s.src)).replace("history.js", "historyFrame.html");
 421                 }
 422             }
 423             historyFrameSourcePrefix = iframe_location + "?";
 424             var src = historyFrameSourcePrefix;
 425
 426             var iframe = document.createElement("iframe");
 427             iframe.id = 'ie_historyFrame';
 428             iframe.name = 'ie_historyFrame';
 429             //iframe.src = historyFrameSourcePrefix;
 430             try {
 431                 document.body.appendChild(iframe);
 432             } catch(e) {
 433                 setTimeout(function() {
 434                     document.body.appendChild(iframe);
 435                 }, 0);
 436             }
 437         }
 438
 439         if (browser.safari)
 440         {
 441             var rememberDiv = document.createElement("div");
 442             rememberDiv.id = 'safari_rememberDiv';
 443             document.body.appendChild(rememberDiv);
 444             rememberDiv.innerHTML = '<input type="text" id="safari_remember_field" style="width: 500px;">';
 445
 446             var formDiv = document.createElement("div");
 447             formDiv.id = 'safari_formDiv';
 448             document.body.appendChild(formDiv);
 449
 450             var reloader_content = document.createElement('div');
 451             reloader_content.id = 'safarireloader';
 452             var scripts = document.getElementsByTagName('script');
 453             for (var i = 0, s; s = scripts[i]; i++) {
 454                 if (s.src.indexOf("history.js") > -1) {
 455                     html = (new String(s.src)).replace(".js", ".html");
 456                 }
 457             }
 458             reloader_content.innerHTML = '<iframe id="safarireloader-iframe" src="about:blank" frameborder="no" scrolling="no"></iframe>';
 459             document.body.appendChild(reloader_content);
 460             reloader_content.style.position = 'absolute';
 461             reloader_content.style.left = reloader_content.style.top = '-9999px';
 462             iframe = reloader_content.getElementsByTagName('iframe')[0];
 463
 464             if (document.getElementById("safari_remember_field").value != "" ) {
 465                 historyHash = document.getElementById("safari_remember_field").value.split(",");
 466             }
 467
 468         }
 469
 470         if (browser.firefox)
 471         {
 472             var anchorDiv = document.createElement("div");
 473             anchorDiv.id = 'firefox_anchorDiv';
 474             document.body.appendChild(anchorDiv);
 475         }
 476
 477         //setTimeout(checkForUrlChange, 50);
 478     }
 479
 480     return {
 481         historyHash: historyHash,
 482         backStack: function() { return backStack; },
 483         forwardStack: function() { return forwardStack },
 484         getPlayer: getPlayer,
 485         initialize: function(src) {
 486             _initialize(src);
 487         },
 488         setURL: function(url) {
 489             document.location.href = url;
 490         },
 491         getURL: function() {
 492             return document.location.href;
 493         },
 494         getTitle: function() {
 495             return document.title;
 496         },
 497         setTitle: function(title) {
 498             try {
 499                 backStack[backStack.length - 1].title = title;
 500             } catch(e) { }
 501             //if on safari, set the title to be the empty string.
 502             if (browser.safari) {
 503                 if (title == "") {
 504                     try {
 505                     var tmp = window.location.href.toString();
 506                     title = tmp.substring((tmp.lastIndexOf("/")+1), tmp.lastIndexOf("#"));
 507                     } catch(e) {
 508                         title = "";
 509                     }
 510                 }
 511             }
 512             document.title = title;
 513         },
 514         setDefaultURL: function(def)
 515         {
 516             defaultHash = def;
 517             def = getHash();
 518             //trailing ? is important else an extra frame gets added to the history
 519             //when navigating back to the first page.  Alternatively could check
 520             //in history frame navigation to compare # and ?.
 521             if (browser.ie)
 522             {
 523                 window['_ie_firstload'] = true;
 524                 var sourceToSet = historyFrameSourcePrefix + def;
 525                 var func = function() {
 526                     getHistoryFrame().src = sourceToSet;
 527                     window.location.replace("#" + def);
 528                     setInterval(checkForUrlChange, 50);
 529                 }
 530                 try {
 531                     func();
 532                 } catch(e) {
 533                     window.setTimeout(function() { func(); }, 0);
 534                 }
 535             }
 536
 537             if (browser.safari)
 538             {
 539                 currentHistoryLength = history.length;
 540                 if (historyHash.length == 0) {
 541                     historyHash[currentHistoryLength] = def;
 542                     var newloc = "#" + def;
 543                     window.location.replace(newloc);
 544                 } else {
 545                     //alert(historyHash[historyHash.length-1]);
 546                 }
 547                 //setHash(def);
 548                 setInterval(checkForUrlChange, 50);
 549             }
 550
 551
 552             if (browser.firefox || browser.opera)
 553             {
 554                 var reg = new RegExp("#" + def + "$");
 555                 if (window.location.toString().match(reg)) {
 556                 } else {
 557                     var newloc ="#" + def;
 558                     window.location.replace(newloc);
 559                 }
 560                 setInterval(checkForUrlChange, 50);
 561                 //setHash(def);
 562             }
 563
 564         },
 565
 566         /* Set the current browser URL; called from inside BrowserManager to propagate
 567          * the application state out to the container.
 568          */
 569         setBrowserURL: function(flexAppUrl, objectId) {
 570             if (browser.ie && typeof objectId != "undefined") {
 571                 currentObjectId = objectId;
 572             }
 573            //fromIframe = fromIframe || false;
 574            //fromFlex = fromFlex || false;
 575            //alert("setBrowserURL: " + flexAppUrl);
 576            //flexAppUrl = (flexAppUrl == "") ? defaultHash : flexAppUrl ;
 577
 578            var pos = document.location.href.indexOf('#');
 579            var baseUrl = pos != -1 ? document.location.href.substr(0, pos) : document.location.href;
 580            var newUrl = baseUrl + '#' + flexAppUrl;
 581
 582            if (document.location.href != newUrl && document.location.href + '#' != newUrl) {
 583                currentHref = newUrl;
 584                addHistoryEntry(baseUrl, newUrl, flexAppUrl);
 585                currentHistoryLength = history.length;
 586            }
 587         },
 588
 589         browserURLChange: function(flexAppUrl) {
 590             var objectId = null;
 591             if (browser.ie && currentObjectId != null) {
 592                 objectId = currentObjectId;
 593             }
 594             pendingURL = '';
 595
 596             if (typeof BrowserHistory_multiple != "undefined" && BrowserHistory_multiple == true) {
 597                 var pl = getPlayers();
 598                 for (var i = 0; i < pl.length; i++) {
 599                     try {
 600                         pl[i].browserURLChange(flexAppUrl);
 601                     } catch(e) { }
 602                 }
 603             } else {
 604                 try {
 605                     getPlayer(objectId).browserURLChange(flexAppUrl);
 606                 } catch(e) { }
 607             }
 608
 609             currentObjectId = null;
 610         },
 611         getUserAgent: function() {
 612             return navigator.userAgent;
 613         },
 614         getPlatform: function() {
 615             return navigator.platform;
 616         }
 617
 618     }
 619
 620 })();
 621
 622 // Initialization
 623
 624 // Automated unit testing and other diagnostics
 625
 626 function setURL(url)
 627 {
 628     document.location.href = url;
 629 }
 630
 631 function backButton()
 632 {
 633     history.back();
 634 }
 635
 636 function forwardButton()
 637 {
 638     history.forward();
 639 }
 640
 641 function goForwardOrBackInHistory(step)
 642 {
 643     history.go(step);
 644 }
 645
 646 //BrowserHistoryUtils.addEvent(window, "load", function() { BrowserHistory.initialize(); });
 647 (function(i) {
 648     var u =navigator.userAgent;var e=/*@cc_on!@*/false;
 649     var st = setTimeout;
 650     if(/webkit/i.test(u)){
 651         st(function(){
 652             var dr=document.readyState;
 653             if(dr=="loaded"||dr=="complete"){i()}
 654             else{st(arguments.callee,10);}},10);
 655     } else if((/mozilla/i.test(u)&&!/(compati)/.test(u)) || (/opera/i.test(u))){
 656         document.addEventListener("DOMContentLoaded",i,false);
 657     } else if(e){
 658     (function(){
 659         var t=document.createElement('doc:rdy');
 660         try{t.doScroll('left');
 661             i();t=null;
 662         }catch(e){st(arguments.callee,0);}})();
 663     } else{
 664         window.onload=i;
 665     }
 666 })( function() {BrowserHistory.initialize();} );