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/examples/KMLParser/bin-release/srcview/source/html-template/history/history.js.txt

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