How to use history method in Kiwi

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history.js

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1/**2 * History.js Core3 * @author Benjamin Arthur Lupton <contact@balupton.com>4 * @copyright 2010-2011 Benjamin Arthur Lupton <contact@balupton.com>5 * @license New BSD License <http://creativecommons.org/licenses/BSD/>6 */7(function(window,undefined){8 "use strict";9 // ========================================================================10 // Initialise11 // Localise Globals12 var13 console = window.console||undefined, // Prevent a JSLint complain14 document = window.document, // Make sure we are using the correct document15 navigator = window.navigator, // Make sure we are using the correct navigator16 sessionStorage = window.sessionStorage||false, // sessionStorage17 setTimeout = window.setTimeout,18 clearTimeout = window.clearTimeout,19 setInterval = window.setInterval,20 clearInterval = window.clearInterval,21 JSON = window.JSON,22 alert = window.alert,23 History = window.History = window.History||{}, // Public History Object24 history = window.history; // Old History Object25 // MooTools Compatibility26 JSON.stringify = JSON.stringify||JSON.encode;27 JSON.parse = JSON.parse||JSON.decode;28 // Check Existence29 if ( typeof History.init !== 'undefined' ) {30 throw new Error('History.js Core has already been loaded...');31 }32 // Initialise History33 History.init = function(){34 // Check Load Status of Adapter35 if ( typeof History.Adapter === 'undefined' ) {36 return false;37 }38 // Check Load Status of Core39 if ( typeof History.initCore !== 'undefined' ) {40 History.initCore();41 }42 // Check Load Status of HTML4 Support43 if ( typeof History.initHtml4 !== 'undefined' ) {44 History.initHtml4();45 }46 // Return true47 return true;48 };49 // ========================================================================50 // Initialise Core51 // Initialise Core52 History.initCore = function(){53 // Initialise54 if ( typeof History.initCore.initialized !== 'undefined' ) {55 // Already Loaded56 return false;57 }58 else {59 History.initCore.initialized = true;60 }61 // ====================================================================62 // Options63 /**64 * History.options65 * Configurable options66 */67 History.options = History.options||{};68 /**69 * History.options.hashChangeInterval70 * How long should the interval be before hashchange checks71 */72 History.options.hashChangeInterval = History.options.hashChangeInterval || 100;73 /**74 * History.options.safariPollInterval75 * How long should the interval be before safari poll checks76 */77 History.options.safariPollInterval = History.options.safariPollInterval || 500;78 /**79 * History.options.doubleCheckInterval80 * How long should the interval be before we perform a double check81 */82 History.options.doubleCheckInterval = History.options.doubleCheckInterval || 500;83 /**84 * History.options.storeInterval85 * How long should we wait between store calls86 */87 History.options.storeInterval = History.options.storeInterval || 1000;88 /**89 * History.options.busyDelay90 * How long should we wait between busy events91 */92 History.options.busyDelay = History.options.busyDelay || 250;93 /**94 * History.options.debug95 * If true will enable debug messages to be logged96 */97 History.options.debug = History.options.debug || false;98 /**99 * History.options.initialTitle100 * What is the title of the initial state101 */102 History.options.initialTitle = History.options.initialTitle || document.title;103 // ====================================================================104 // Interval record105 /**106 * History.intervalList107 * List of intervals set, to be cleared when document is unloaded.108 */109 History.intervalList = [];110 /**111 * History.clearAllIntervals112 * Clears all setInterval instances.113 */114 History.clearAllIntervals = function(){115 var i, il = History.intervalList;116 if (typeof il !== "undefined" && il !== null) {117 for (i = 0; i < il.length; i++) {118 clearInterval(il[i]);119 }120 History.intervalList = null;121 }122 };123 // ====================================================================124 // Debug125 /**126 * History.debug(message,...)127 * Logs the passed arguments if debug enabled128 */129 History.debug = function(){130 if ( (History.options.debug||false) ) {131 History.log.apply(History,arguments);132 }133 };134 /**135 * History.log(message,...)136 * Logs the passed arguments137 */138 History.log = function(){139 // Prepare140 var141 consoleExists = !(typeof console === 'undefined' || typeof console.log === 'undefined' || typeof console.log.apply === 'undefined'),142 textarea = document.getElementById('log'),143 message,144 i,n,145 args,arg146 ;147 // Write to Console148 if ( consoleExists ) {149 args = Array.prototype.slice.call(arguments);150 message = args.shift();151 if ( typeof console.debug !== 'undefined' ) {152 console.debug.apply(console,[message,args]);153 }154 else {155 console.log.apply(console,[message,args]);156 }157 }158 else {159 message = ("\n"+arguments[0]+"\n");160 }161 // Write to log162 for ( i=1,n=arguments.length; i<n; ++i ) {163 arg = arguments[i];164 if ( typeof arg === 'object' && typeof JSON !== 'undefined' ) {165 try {166 arg = JSON.stringify(arg);167 }168 catch ( Exception ) {169 // Recursive Object170 }171 }172 message += "\n"+arg+"\n";173 }174 // Textarea175 if ( textarea ) {176 textarea.value += message+"\n-----\n";177 textarea.scrollTop = textarea.scrollHeight - textarea.clientHeight;178 }179 // No Textarea, No Console180 else if ( !consoleExists ) {181 alert(message);182 }183 // Return true184 return true;185 };186 // ====================================================================187 // Emulated Status188 /**189 * History.getInternetExplorerMajorVersion()190 * Get's the major version of Internet Explorer191 * @return {integer}192 * @license Public Domain193 * @author Benjamin Arthur Lupton <contact@balupton.com>194 * @author James Padolsey <https://gist.github.com/527683>195 */196 History.getInternetExplorerMajorVersion = function(){197 var result = History.getInternetExplorerMajorVersion.cached =198 (typeof History.getInternetExplorerMajorVersion.cached !== 'undefined')199 ? History.getInternetExplorerMajorVersion.cached200 : (function(){201 var v = 3,202 div = document.createElement('div'),203 all = div.getElementsByTagName('i');204 while ( (div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->') && all[0] ) {}205 return (v > 4) ? v : false;206 })()207 ;208 return result;209 };210 /**211 * History.isInternetExplorer()212 * Are we using Internet Explorer?213 * @return {boolean}214 * @license Public Domain215 * @author Benjamin Arthur Lupton <contact@balupton.com>216 */217 History.isInternetExplorer = function(){218 var result =219 History.isInternetExplorer.cached =220 (typeof History.isInternetExplorer.cached !== 'undefined')221 ? History.isInternetExplorer.cached222 : Boolean(History.getInternetExplorerMajorVersion())223 ;224 return result;225 };226 /**227 * History.emulated228 * Which features require emulating?229 */230 History.emulated = {231 pushState: !Boolean(232 window.history && window.history.pushState && window.history.replaceState233 && !(234 (/ Mobile\/([1-7][a-z]|(8([abcde]|f(1[0-8]))))/i).test(navigator.userAgent) /* disable for versions of iOS before version 4.3 (8F190) */235 || (/AppleWebKit\/5([0-2]|3[0-2])/i).test(navigator.userAgent) /* disable for the mercury iOS browser, or at least older versions of the webkit engine */236 )237 ),238 hashChange: Boolean(239 !(('onhashchange' in window) || ('onhashchange' in document))240 ||241 (History.isInternetExplorer() && History.getInternetExplorerMajorVersion() < 8)242 )243 };244 /**245 * History.enabled246 * Is History enabled?247 */248 History.enabled = !History.emulated.pushState;249 /**250 * History.bugs251 * Which bugs are present252 */253 History.bugs = {254 /**255 * Safari 5 and Safari iOS 4 fail to return to the correct state once a hash is replaced by a `replaceState` call256 * https://bugs.webkit.org/show_bug.cgi?id=56249257 */258 setHash: Boolean(!History.emulated.pushState && navigator.vendor === 'Apple Computer, Inc.' && /AppleWebKit\/5([0-2]|3[0-3])/.test(navigator.userAgent)),259 /**260 * Safari 5 and Safari iOS 4 sometimes fail to apply the state change under busy conditions261 * https://bugs.webkit.org/show_bug.cgi?id=42940262 */263 safariPoll: Boolean(!History.emulated.pushState && navigator.vendor === 'Apple Computer, Inc.' && /AppleWebKit\/5([0-2]|3[0-3])/.test(navigator.userAgent)),264 /**265 * MSIE 6 and 7 sometimes do not apply a hash even it was told to (requiring a second call to the apply function)266 */267 ieDoubleCheck: Boolean(History.isInternetExplorer() && History.getInternetExplorerMajorVersion() < 8),268 /**269 * MSIE 6 requires the entire hash to be encoded for the hashes to trigger the onHashChange event270 */271 hashEscape: Boolean(History.isInternetExplorer() && History.getInternetExplorerMajorVersion() < 7)272 };273 /**274 * History.isEmptyObject(obj)275 * Checks to see if the Object is Empty276 * @param {Object} obj277 * @return {boolean}278 */279 History.isEmptyObject = function(obj) {280 for ( var name in obj ) {281 return false;282 }283 return true;284 };285 /**286 * History.cloneObject(obj)287 * Clones a object and eliminate all references to the original contexts288 * @param {Object} obj289 * @return {Object}290 */291 History.cloneObject = function(obj) {292 var hash,newObj;293 if ( obj ) {294 hash = JSON.stringify(obj);295 newObj = JSON.parse(hash);296 }297 else {298 newObj = {};299 }300 return newObj;301 };302 // ====================================================================303 // URL Helpers304 /**305 * History.getRootUrl()306 * Turns "http://mysite.com/dir/page.html?asd" into "http://mysite.com"307 * @return {String} rootUrl308 */309 History.getRootUrl = function(){310 // Create311 var rootUrl = document.location.protocol+'//'+(document.location.hostname||document.location.host);312 if ( document.location.port||false ) {313 rootUrl += ':'+document.location.port;314 }315 rootUrl += '/';316 // Return317 return rootUrl;318 };319 /**320 * History.getBaseHref()321 * Fetches the `href` attribute of the `<base href="...">` element if it exists322 * @return {String} baseHref323 */324 History.getBaseHref = function(){325 // Create326 var327 baseElements = document.getElementsByTagName('base'),328 baseElement = null,329 baseHref = '';330 // Test for Base Element331 if ( baseElements.length === 1 ) {332 // Prepare for Base Element333 baseElement = baseElements[0];334 baseHref = baseElement.href.replace(/[^\/]+$/,'');335 }336 // Adjust trailing slash337 baseHref = baseHref.replace(/\/+$/,'');338 if ( baseHref ) baseHref += '/';339 // Return340 return baseHref;341 };342 /**343 * History.getBaseUrl()344 * Fetches the baseHref or basePageUrl or rootUrl (whichever one exists first)345 * @return {String} baseUrl346 */347 History.getBaseUrl = function(){348 // Create349 var baseUrl = History.getBaseHref()||History.getBasePageUrl()||History.getRootUrl();350 // Return351 return baseUrl;352 };353 /**354 * History.getPageUrl()355 * Fetches the URL of the current page356 * @return {String} pageUrl357 */358 History.getPageUrl = function(){359 // Fetch360 var361 State = History.getState(false,false),362 stateUrl = (State||{}).url||document.location.href,363 pageUrl;364 // Create365 pageUrl = stateUrl.replace(/\/+$/,'').replace(/[^\/]+$/,function(part,index,string){366 return (/\./).test(part) ? part : part+'/';367 });368 // Return369 return pageUrl;370 };371 /**372 * History.getBasePageUrl()373 * Fetches the Url of the directory of the current page374 * @return {String} basePageUrl375 */376 History.getBasePageUrl = function(){377 // Create378 var basePageUrl = document.location.href.replace(/[#\?].*/,'').replace(/[^\/]+$/,function(part,index,string){379 return (/[^\/]$/).test(part) ? '' : part;380 }).replace(/\/+$/,'')+'/';381 // Return382 return basePageUrl;383 };384 /**385 * History.getFullUrl(url)386 * Ensures that we have an absolute URL and not a relative URL387 * @param {string} url388 * @param {Boolean} allowBaseHref389 * @return {string} fullUrl390 */391 History.getFullUrl = function(url,allowBaseHref){392 // Prepare393 var fullUrl = url, firstChar = url.substring(0,1);394 allowBaseHref = (typeof allowBaseHref === 'undefined') ? true : allowBaseHref;395 // Check396 if ( /[a-z]+\:\/\//.test(url) ) {397 // Full URL398 }399 else if ( firstChar === '/' ) {400 // Root URL401 fullUrl = History.getRootUrl()+url.replace(/^\/+/,'');402 }403 else if ( firstChar === '#' ) {404 // Anchor URL405 fullUrl = History.getPageUrl().replace(/#.*/,'')+url;406 }407 else if ( firstChar === '?' ) {408 // Query URL409 fullUrl = History.getPageUrl().replace(/[\?#].*/,'')+url;410 }411 else {412 // Relative URL413 if ( allowBaseHref ) {414 fullUrl = History.getBaseUrl()+url.replace(/^(\.\/)+/,'');415 } else {416 fullUrl = History.getBasePageUrl()+url.replace(/^(\.\/)+/,'');417 }418 // We have an if condition above as we do not want hashes419 // which are relative to the baseHref in our URLs420 // as if the baseHref changes, then all our bookmarks421 // would now point to different locations422 // whereas the basePageUrl will always stay the same423 }424 // Return425 return fullUrl.replace(/\#$/,'');426 };427 /**428 * History.getShortUrl(url)429 * Ensures that we have a relative URL and not a absolute URL430 * @param {string} url431 * @return {string} url432 */433 History.getShortUrl = function(url){434 // Prepare435 var shortUrl = url, baseUrl = History.getBaseUrl(), rootUrl = History.getRootUrl();436 // Trim baseUrl437 if ( History.emulated.pushState ) {438 // We are in a if statement as when pushState is not emulated439 // The actual url these short urls are relative to can change440 // So within the same session, we the url may end up somewhere different441 shortUrl = shortUrl.replace(baseUrl,'');442 }443 // Trim rootUrl444 shortUrl = shortUrl.replace(rootUrl,'/');445 // Ensure we can still detect it as a state446 if ( History.isTraditionalAnchor(shortUrl) ) {447 shortUrl = './'+shortUrl;448 }449 // Clean It450 shortUrl = shortUrl.replace(/^(\.\/)+/g,'./').replace(/\#$/,'');451 // Return452 return shortUrl;453 };454 // ====================================================================455 // State Storage456 /**457 * History.store458 * The store for all session specific data459 */460 History.store = {};461 /**462 * History.idToState463 * 1-1: State ID to State Object464 */465 History.idToState = History.idToState||{};466 /**467 * History.stateToId468 * 1-1: State String to State ID469 */470 History.stateToId = History.stateToId||{};471 /**472 * History.urlToId473 * 1-1: State URL to State ID474 */475 History.urlToId = History.urlToId||{};476 /**477 * History.storedStates478 * Store the states in an array479 */480 History.storedStates = History.storedStates||[];481 /**482 * History.savedStates483 * Saved the states in an array484 */485 History.savedStates = History.savedStates||[];486 /**487 * History.noramlizeStore()488 * Noramlize the store by adding necessary values489 */490 History.normalizeStore = function(){491 History.store.idToState = History.store.idToState||{};492 History.store.urlToId = History.store.urlToId||{};493 History.store.stateToId = History.store.stateToId||{};494 };495 /**496 * History.getState()497 * Get an object containing the data, title and url of the current state498 * @param {Boolean} friendly499 * @param {Boolean} create500 * @return {Object} State501 */502 History.getState = function(friendly,create){503 // Prepare504 if ( typeof friendly === 'undefined' ) { friendly = true; }505 if ( typeof create === 'undefined' ) { create = true; }506 // Fetch507 var State = History.getLastSavedState();508 // Create509 if ( !State && create ) {510 State = History.createStateObject();511 }512 // Adjust513 if ( friendly ) {514 State = History.cloneObject(State);515 State.url = State.cleanUrl||State.url;516 }517 // Return518 return State;519 };520 /**521 * History.getIdByState(State)522 * Gets a ID for a State523 * @param {State} newState524 * @return {String} id525 */526 History.getIdByState = function(newState){527 // Fetch ID528 var id = History.extractId(newState.url),529 str;530 531 if ( !id ) {532 // Find ID via State String533 str = History.getStateString(newState);534 if ( typeof History.stateToId[str] !== 'undefined' ) {535 id = History.stateToId[str];536 }537 else if ( typeof History.store.stateToId[str] !== 'undefined' ) {538 id = History.store.stateToId[str];539 }540 else {541 // Generate a new ID542 while ( true ) {543 id = (new Date()).getTime() + String(Math.random()).replace(/\D/g,'');544 if ( typeof History.idToState[id] === 'undefined' && typeof History.store.idToState[id] === 'undefined' ) {545 break;546 }547 }548 // Apply the new State to the ID549 History.stateToId[str] = id;550 History.idToState[id] = newState;551 }552 }553 // Return ID554 return id;555 };556 /**557 * History.normalizeState(State)558 * Expands a State Object559 * @param {object} State560 * @return {object}561 */562 History.normalizeState = function(oldState){563 // Variables564 var newState, dataNotEmpty;565 // Prepare566 if ( !oldState || (typeof oldState !== 'object') ) {567 oldState = {};568 }569 // Check570 if ( typeof oldState.normalized !== 'undefined' ) {571 return oldState;572 }573 // Adjust574 if ( !oldState.data || (typeof oldState.data !== 'object') ) {575 oldState.data = {};576 }577 // ----------------------------------------------------------------578 // Create579 newState = {};580 newState.normalized = true;581 newState.title = oldState.title||'';582 newState.url = History.getFullUrl(History.unescapeString(oldState.url||document.location.href));583 newState.hash = History.getShortUrl(newState.url);584 newState.data = History.cloneObject(oldState.data);585 // Fetch ID586 newState.id = History.getIdByState(newState);587 // ----------------------------------------------------------------588 // Clean the URL589 newState.cleanUrl = newState.url.replace(/\??\&_suid.*/,'');590 newState.url = newState.cleanUrl;591 // Check to see if we have more than just a url592 dataNotEmpty = !History.isEmptyObject(newState.data);593 // Apply594 if ( newState.title || dataNotEmpty ) {595 // Add ID to Hash596 newState.hash = History.getShortUrl(newState.url).replace(/\??\&_suid.*/,'');597 if ( !/\?/.test(newState.hash) ) {598 newState.hash += '?';599 }600 newState.hash += '&_suid='+newState.id;601 }602 // Create the Hashed URL603 newState.hashedUrl = History.getFullUrl(newState.hash);604 // ----------------------------------------------------------------605 // Update the URL if we have a duplicate606 if ( (History.emulated.pushState || History.bugs.safariPoll) && History.hasUrlDuplicate(newState) ) {607 newState.url = newState.hashedUrl;608 }609 // ----------------------------------------------------------------610 // Return611 return newState;612 };613 /**614 * History.createStateObject(data,title,url)615 * Creates a object based on the data, title and url state params616 * @param {object} data617 * @param {string} title618 * @param {string} url619 * @return {object}620 */621 History.createStateObject = function(data,title,url){622 // Hashify623 var State = {624 'data': data,625 'title': title,626 'url': url627 };628 // Expand the State629 State = History.normalizeState(State);630 // Return object631 return State;632 };633 /**634 * History.getStateById(id)635 * Get a state by it's UID636 * @param {String} id637 */638 History.getStateById = function(id){639 // Prepare640 id = String(id);641 // Retrieve642 var State = History.idToState[id] || History.store.idToState[id] || undefined;643 // Return State644 return State;645 };646 /**647 * Get a State's String648 * @param {State} passedState649 */650 History.getStateString = function(passedState){651 // Prepare652 var State, cleanedState, str;653 // Fetch654 State = History.normalizeState(passedState);655 // Clean656 cleanedState = {657 data: State.data,658 title: passedState.title,659 url: passedState.url660 };661 // Fetch662 str = JSON.stringify(cleanedState);663 // Return664 return str;665 };666 /**667 * Get a State's ID668 * @param {State} passedState669 * @return {String} id670 */671 History.getStateId = function(passedState){672 // Prepare673 var State, id;674 675 // Fetch676 State = History.normalizeState(passedState);677 // Fetch678 id = State.id;679 // Return680 return id;681 };682 /**683 * History.getHashByState(State)684 * Creates a Hash for the State Object685 * @param {State} passedState686 * @return {String} hash687 */688 History.getHashByState = function(passedState){689 // Prepare690 var State, hash;691 692 // Fetch693 State = History.normalizeState(passedState);694 // Hash695 hash = State.hash;696 // Return697 return hash;698 };699 /**700 * History.extractId(url_or_hash)701 * Get a State ID by it's URL or Hash702 * @param {string} url_or_hash703 * @return {string} id704 */705 History.extractId = function ( url_or_hash ) {706 // Prepare707 var id,parts,url;708 // Extract709 parts = /(.*)\&_suid=([0-9]+)$/.exec(url_or_hash);710 url = parts ? (parts[1]||url_or_hash) : url_or_hash;711 id = parts ? String(parts[2]||'') : '';712 // Return713 return id||false;714 };715 /**716 * History.isTraditionalAnchor717 * Checks to see if the url is a traditional anchor or not718 * @param {String} url_or_hash719 * @return {Boolean}720 */721 History.isTraditionalAnchor = function(url_or_hash){722 // Check723 var isTraditional = !(/[\/\?\.]/.test(url_or_hash));724 // Return725 return isTraditional;726 };727 /**728 * History.extractState729 * Get a State by it's URL or Hash730 * @param {String} url_or_hash731 * @return {State|null}732 */733 History.extractState = function(url_or_hash,create){734 // Prepare735 var State = null, id, url;736 create = create||false;737 // Fetch SUID738 id = History.extractId(url_or_hash);739 if ( id ) {740 State = History.getStateById(id);741 }742 // Fetch SUID returned no State743 if ( !State ) {744 // Fetch URL745 url = History.getFullUrl(url_or_hash);746 // Check URL747 id = History.getIdByUrl(url)||false;748 if ( id ) {749 State = History.getStateById(id);750 }751 // Create State752 if ( !State && create && !History.isTraditionalAnchor(url_or_hash) ) {753 State = History.createStateObject(null,null,url);754 }755 }756 // Return757 return State;758 };759 /**760 * History.getIdByUrl()761 * Get a State ID by a State URL762 */763 History.getIdByUrl = function(url){764 // Fetch765 var id = History.urlToId[url] || History.store.urlToId[url] || undefined;766 // Return767 return id;768 };769 /**770 * History.getLastSavedState()771 * Get an object containing the data, title and url of the current state772 * @return {Object} State773 */774 History.getLastSavedState = function(){775 return History.savedStates[History.savedStates.length-1]||undefined;776 };777 /**778 * History.getLastStoredState()779 * Get an object containing the data, title and url of the current state780 * @return {Object} State781 */782 History.getLastStoredState = function(){783 return History.storedStates[History.storedStates.length-1]||undefined;784 };785 /**786 * History.hasUrlDuplicate787 * Checks if a Url will have a url conflict788 * @param {Object} newState789 * @return {Boolean} hasDuplicate790 */791 History.hasUrlDuplicate = function(newState) {792 // Prepare793 var hasDuplicate = false,794 oldState;795 // Fetch796 oldState = History.extractState(newState.url);797 // Check798 hasDuplicate = oldState && oldState.id !== newState.id;799 // Return800 return hasDuplicate;801 };802 /**803 * History.storeState804 * Store a State805 * @param {Object} newState806 * @return {Object} newState807 */808 History.storeState = function(newState){809 // Store the State810 History.urlToId[newState.url] = newState.id;811 // Push the State812 History.storedStates.push(History.cloneObject(newState));813 // Return newState814 return newState;815 };816 /**817 * History.isLastSavedState(newState)818 * Tests to see if the state is the last state819 * @param {Object} newState820 * @return {boolean} isLast821 */822 History.isLastSavedState = function(newState){823 // Prepare824 var isLast = false,825 newId, oldState, oldId;826 // Check827 if ( History.savedStates.length ) {828 newId = newState.id;829 oldState = History.getLastSavedState();830 oldId = oldState.id;831 // Check832 isLast = (newId === oldId);833 }834 // Return835 return isLast;836 };837 /**838 * History.saveState839 * Push a State840 * @param {Object} newState841 * @return {boolean} changed842 */843 History.saveState = function(newState){844 // Check Hash845 if ( History.isLastSavedState(newState) ) {846 return false;847 }848 // Push the State849 History.savedStates.push(History.cloneObject(newState));850 // Return true851 return true;852 };853 /**854 * History.getStateByIndex()855 * Gets a state by the index856 * @param {integer} index857 * @return {Object}858 */859 History.getStateByIndex = function(index){860 // Prepare861 var State = null;862 // Handle863 if ( typeof index === 'undefined' ) {864 // Get the last inserted865 State = History.savedStates[History.savedStates.length-1];866 }867 else if ( index < 0 ) {868 // Get from the end869 State = History.savedStates[History.savedStates.length+index];870 }871 else {872 // Get from the beginning873 State = History.savedStates[index];874 }875 // Return State876 return State;877 };878 // ====================================================================879 // Hash Helpers880 /**881 * History.getHash()882 * Gets the current document hash883 * @return {string}884 */885 History.getHash = function(){886 var hash = History.unescapeHash(document.location.hash);887 return hash;888 };889 /**890 * History.unescapeString()891 * Unescape a string892 * @param {String} str893 * @return {string}894 */895 History.unescapeString = function(str){896 // Prepare897 var result = str,898 tmp;899 // Unescape hash900 while ( true ) {901 tmp = window.unescape(result);902 if ( tmp === result ) {903 break;904 }905 result = tmp;906 }907 // Return result908 return result;909 };910 /**911 * History.unescapeHash()912 * normalize and Unescape a Hash913 * @param {String} hash914 * @return {string}915 */916 History.unescapeHash = function(hash){917 // Prepare918 var result = History.normalizeHash(hash);919 // Unescape hash920 result = History.unescapeString(result);921 // Return result922 return result;923 };924 /**925 * History.normalizeHash()926 * normalize a hash across browsers927 * @return {string}928 */929 History.normalizeHash = function(hash){930 // Prepare931 var result = hash.replace(/[^#]*#/,'').replace(/#.*/, '');932 // Return result933 return result;934 };935 /**936 * History.setHash(hash)937 * Sets the document hash938 * @param {string} hash939 * @return {History}940 */941 History.setHash = function(hash,queue){942 // Prepare943 var adjustedHash, State, pageUrl;944 // Handle Queueing945 if ( queue !== false && History.busy() ) {946 // Wait + Push to Queue947 //History.debug('History.setHash: we must wait', arguments);948 History.pushQueue({949 scope: History,950 callback: History.setHash,951 args: arguments,952 queue: queue953 });954 return false;955 }956 // Log957 //History.debug('History.setHash: called',hash);958 // Prepare959 adjustedHash = History.escapeHash(hash);960 // Make Busy + Continue961 History.busy(true);962 // Check if hash is a state963 State = History.extractState(hash,true);964 if ( State && !History.emulated.pushState ) {965 // Hash is a state so skip the setHash966 //History.debug('History.setHash: Hash is a state so skipping the hash set with a direct pushState call',arguments);967 // PushState968 History.pushState(State.data,State.title,State.url,false);969 }970 else if ( document.location.hash !== adjustedHash ) {971 // Hash is a proper hash, so apply it972 // Handle browser bugs973 if ( History.bugs.setHash ) {974 // Fix Safari Bug https://bugs.webkit.org/show_bug.cgi?id=56249975 // Fetch the base page976 pageUrl = History.getPageUrl();977 // Safari hash apply978 History.pushState(null,null,pageUrl+'#'+adjustedHash,false);979 }980 else {981 // Normal hash apply982 document.location.hash = adjustedHash;983 }984 }985 // Chain986 return History;987 };988 /**989 * History.escape()990 * normalize and Escape a Hash991 * @return {string}992 */993 History.escapeHash = function(hash){994 // Prepare995 var result = History.normalizeHash(hash);996 // Escape hash997 result = window.escape(result);998 // IE6 Escape Bug999 if ( !History.bugs.hashEscape ) {1000 // Restore common parts1001 result = result1002 .replace(/\%21/g,'!')1003 .replace(/\%26/g,'&')1004 .replace(/\%3D/g,'=')1005 .replace(/\%3F/g,'?');1006 }1007 // Return result1008 return result;1009 };1010 /**1011 * History.getHashByUrl(url)1012 * Extracts the Hash from a URL1013 * @param {string} url1014 * @return {string} url1015 */1016 History.getHashByUrl = function(url){1017 // Extract the hash1018 var hash = String(url)1019 .replace(/([^#]*)#?([^#]*)#?(.*)/, '$2')1020 ;1021 // Unescape hash1022 hash = History.unescapeHash(hash);1023 // Return hash1024 return hash;1025 };1026 /**1027 * History.setTitle(title)1028 * Applies the title to the document1029 * @param {State} newState1030 * @return {Boolean}1031 */1032 History.setTitle = function(newState){1033 // Prepare1034 var title = newState.title,1035 firstState;1036 // Initial1037 if ( !title ) {1038 firstState = History.getStateByIndex(0);1039 if ( firstState && firstState.url === newState.url ) {1040 title = firstState.title||History.options.initialTitle;1041 }1042 }1043 // Apply1044 try {1045 document.getElementsByTagName('title')[0].innerHTML = title.replace('<','&lt;').replace('>','&gt;').replace(' & ',' &amp; ');1046 }1047 catch ( Exception ) { }1048 document.title = title;1049 // Chain1050 return History;1051 };1052 // ====================================================================1053 // Queueing1054 /**1055 * History.queues1056 * The list of queues to use1057 * First In, First Out1058 */1059 History.queues = [];1060 /**1061 * History.busy(value)1062 * @param {boolean} value [optional]1063 * @return {boolean} busy1064 */1065 History.busy = function(value){1066 // Apply1067 if ( typeof value !== 'undefined' ) {1068 //History.debug('History.busy: changing ['+(History.busy.flag||false)+'] to ['+(value||false)+']', History.queues.length);1069 History.busy.flag = value;1070 }1071 // Default1072 else if ( typeof History.busy.flag === 'undefined' ) {1073 History.busy.flag = false;1074 }1075 // Queue1076 if ( !History.busy.flag ) {1077 // Execute the next item in the queue1078 clearTimeout(History.busy.timeout);1079 var fireNext = function(){1080 var i, queue, item;1081 if ( History.busy.flag ) return;1082 for ( i=History.queues.length-1; i >= 0; --i ) {1083 queue = History.queues[i];1084 if ( queue.length === 0 ) continue;1085 item = queue.shift();1086 History.fireQueueItem(item);1087 History.busy.timeout = setTimeout(fireNext,History.options.busyDelay);1088 }1089 };1090 History.busy.timeout = setTimeout(fireNext,History.options.busyDelay);1091 }1092 // Return1093 return History.busy.flag;1094 };1095 /**1096 * History.busy.flag1097 */1098 History.busy.flag = false;1099 /**1100 * History.fireQueueItem(item)1101 * Fire a Queue Item1102 * @param {Object} item1103 * @return {Mixed} result1104 */1105 History.fireQueueItem = function(item){1106 return item.callback.apply(item.scope||History,item.args||[]);1107 };1108 /**1109 * History.pushQueue(callback,args)1110 * Add an item to the queue1111 * @param {Object} item [scope,callback,args,queue]1112 */1113 History.pushQueue = function(item){1114 // Prepare the queue1115 History.queues[item.queue||0] = History.queues[item.queue||0]||[];1116 // Add to the queue1117 History.queues[item.queue||0].push(item);1118 // Chain1119 return History;1120 };1121 /**1122 * History.queue (item,queue), (func,queue), (func), (item)1123 * Either firs the item now if not busy, or adds it to the queue1124 */1125 History.queue = function(item,queue){1126 // Prepare1127 if ( typeof item === 'function' ) {1128 item = {1129 callback: item1130 };1131 }1132 if ( typeof queue !== 'undefined' ) {1133 item.queue = queue;1134 }1135 // Handle1136 if ( History.busy() ) {1137 History.pushQueue(item);1138 } else {1139 History.fireQueueItem(item);1140 }1141 // Chain1142 return History;1143 };1144 /**1145 * History.clearQueue()1146 * Clears the Queue1147 */1148 History.clearQueue = function(){1149 History.busy.flag = false;1150 History.queues = [];1151 return History;1152 };1153 // ====================================================================1154 // IE Bug Fix1155 /**1156 * History.stateChanged1157 * States whether or not the state has changed since the last double check was initialised1158 */1159 History.stateChanged = false;1160 /**1161 * History.doubleChecker1162 * Contains the timeout used for the double checks1163 */1164 History.doubleChecker = false;1165 /**1166 * History.doubleCheckComplete()1167 * Complete a double check1168 * @return {History}1169 */1170 History.doubleCheckComplete = function(){1171 // Update1172 History.stateChanged = true;1173 // Clear1174 History.doubleCheckClear();1175 // Chain1176 return History;1177 };1178 /**1179 * History.doubleCheckClear()1180 * Clear a double check1181 * @return {History}1182 */1183 History.doubleCheckClear = function(){1184 // Clear1185 if ( History.doubleChecker ) {1186 clearTimeout(History.doubleChecker);1187 History.doubleChecker = false;1188 }1189 // Chain1190 return History;1191 };1192 /**1193 * History.doubleCheck()1194 * Create a double check1195 * @return {History}1196 */1197 History.doubleCheck = function(tryAgain){1198 // Reset1199 History.stateChanged = false;1200 History.doubleCheckClear();1201 // Fix IE6,IE7 bug where calling history.back or history.forward does not actually change the hash (whereas doing it manually does)1202 // Fix Safari 5 bug where sometimes the state does not change: https://bugs.webkit.org/show_bug.cgi?id=429401203 if ( History.bugs.ieDoubleCheck ) {1204 // Apply Check1205 History.doubleChecker = setTimeout(1206 function(){1207 History.doubleCheckClear();1208 if ( !History.stateChanged ) {1209 //History.debug('History.doubleCheck: State has not yet changed, trying again', arguments);1210 // Re-Attempt1211 tryAgain();1212 }1213 return true;1214 },1215 History.options.doubleCheckInterval1216 );1217 }1218 // Chain1219 return History;1220 };1221 // ====================================================================1222 // Safari Bug Fix1223 /**1224 * History.safariStatePoll()1225 * Poll the current state1226 * @return {History}1227 */1228 History.safariStatePoll = function(){1229 // Poll the URL1230 // Get the Last State which has the new URL1231 var1232 urlState = History.extractState(document.location.href),1233 newState;1234 // Check for a difference1235 if ( !History.isLastSavedState(urlState) ) {1236 newState = urlState;1237 }1238 else {1239 return;1240 }1241 // Check if we have a state with that url1242 // If not create it1243 if ( !newState ) {1244 //History.debug('History.safariStatePoll: new');1245 newState = History.createStateObject();1246 }1247 // Apply the New State1248 //History.debug('History.safariStatePoll: trigger');1249 History.Adapter.trigger(window,'popstate');1250 // Chain1251 return History;1252 };1253 // ====================================================================1254 // State Aliases1255 /**1256 * History.back(queue)1257 * Send the browser history back one item1258 * @param {Integer} queue [optional]1259 */1260 History.back = function(queue){1261 //History.debug('History.back: called', arguments);1262 // Handle Queueing1263 if ( queue !== false && History.busy() ) {1264 // Wait + Push to Queue1265 //History.debug('History.back: we must wait', arguments);1266 History.pushQueue({1267 scope: History,1268 callback: History.back,1269 args: arguments,1270 queue: queue1271 });1272 return false;1273 }1274 // Make Busy + Continue1275 History.busy(true);1276 // Fix certain browser bugs that prevent the state from changing1277 History.doubleCheck(function(){1278 History.back(false);1279 });1280 // Go back1281 history.go(-1);1282 // End back closure1283 return true;1284 };1285 /**1286 * History.forward(queue)1287 * Send the browser history forward one item1288 * @param {Integer} queue [optional]1289 */1290 History.forward = function(queue){1291 //History.debug('History.forward: called', arguments);1292 // Handle Queueing1293 if ( queue !== false && History.busy() ) {1294 // Wait + Push to Queue1295 //History.debug('History.forward: we must wait', arguments);1296 History.pushQueue({1297 scope: History,1298 callback: History.forward,1299 args: arguments,1300 queue: queue1301 });1302 return false;1303 }1304 // Make Busy + Continue1305 History.busy(true);1306 // Fix certain browser bugs that prevent the state from changing1307 History.doubleCheck(function(){1308 History.forward(false);1309 });1310 // Go forward1311 history.go(1);1312 // End forward closure1313 return true;1314 };1315 /**1316 * History.go(index,queue)1317 * Send the browser history back or forward index times1318 * @param {Integer} queue [optional]1319 */1320 History.go = function(index,queue){1321 //History.debug('History.go: called', arguments);1322 // Prepare1323 var i;1324 // Handle1325 if ( index > 0 ) {1326 // Forward1327 for ( i=1; i<=index; ++i ) {1328 History.forward(queue);1329 }1330 }1331 else if ( index < 0 ) {1332 // Backward1333 for ( i=-1; i>=index; --i ) {1334 History.back(queue);1335 }1336 }1337 else {1338 throw new Error('History.go: History.go requires a positive or negative integer passed.');1339 }1340 // Chain1341 return History;1342 };1343 // ====================================================================1344 // HTML5 State Support1345 // Non-Native pushState Implementation1346 if ( History.emulated.pushState ) {1347 /*1348 * Provide Skeleton for HTML4 Browsers1349 */1350 // Prepare1351 var emptyFunction = function(){};1352 History.pushState = History.pushState||emptyFunction;1353 History.replaceState = History.replaceState||emptyFunction;1354 } // History.emulated.pushState1355 // Native pushState Implementation1356 else {1357 /*1358 * Use native HTML5 History API Implementation1359 */1360 /**1361 * History.onPopState(event,extra)1362 * Refresh the Current State1363 */1364 History.onPopState = function(event,extra){1365 // Prepare1366 var stateId = false, newState = false, currentHash, currentState;1367 // Reset the double check1368 History.doubleCheckComplete();1369 // Check for a Hash, and handle apporiatly1370 currentHash = History.getHash();1371 if ( currentHash ) {1372 // Expand Hash1373 currentState = History.extractState(currentHash||document.location.href,true);1374 if ( currentState ) {1375 // We were able to parse it, it must be a State!1376 // Let's forward to replaceState1377 //History.debug('History.onPopState: state anchor', currentHash, currentState);1378 History.replaceState(currentState.data, currentState.title, currentState.url, false);1379 }1380 else {1381 // Traditional Anchor1382 //History.debug('History.onPopState: traditional anchor', currentHash);1383 History.Adapter.trigger(window,'anchorchange');1384 History.busy(false);1385 }1386 // We don't care for hashes1387 History.expectedStateId = false;1388 return false;1389 }1390 // Ensure1391 stateId = History.Adapter.extractEventData('state',event,extra) || false;1392 // Fetch State1393 if ( stateId ) {1394 // Vanilla: Back/forward button was used1395 newState = History.getStateById(stateId);1396 }1397 else if ( History.expectedStateId ) {1398 // Vanilla: A new state was pushed, and popstate was called manually1399 newState = History.getStateById(History.expectedStateId);1400 }1401 else {1402 // Initial State1403 newState = History.extractState(document.location.href);1404 }1405 // The State did not exist in our store1406 if ( !newState ) {1407 // Regenerate the State1408 newState = History.createStateObject(null,null,document.location.href);1409 }1410 // Clean1411 History.expectedStateId = false;1412 // Check if we are the same state1413 if ( History.isLastSavedState(newState) ) {1414 // There has been no change (just the page's hash has finally propagated)1415 //History.debug('History.onPopState: no change', newState, History.savedStates);1416 History.busy(false);1417 return false;1418 }1419 // Store the State1420 History.storeState(newState);1421 History.saveState(newState);1422 // Force update of the title1423 History.setTitle(newState);1424 // Fire Our Event1425 History.Adapter.trigger(window,'statechange');1426 History.busy(false);1427 // Return true1428 return true;1429 };1430 History.Adapter.bind(window,'popstate',History.onPopState);1431 /**1432 * History.pushState(data,title,url)1433 * Add a new State to the history object, become it, and trigger onpopstate1434 * We have to trigger for HTML4 compatibility1435 * @param {object} data1436 * @param {string} title1437 * @param {string} url1438 * @return {true}1439 */1440 History.pushState = function(data,title,url,queue){1441 //History.debug('History.pushState: called', arguments);1442 // Check the State1443 if ( History.getHashByUrl(url) && History.emulated.pushState ) {1444 throw new Error('History.js does not support states with fragement-identifiers (hashes/anchors).');1445 }1446 // Handle Queueing1447 if ( queue !== false && History.busy() ) {1448 // Wait + Push to Queue1449 //History.debug('History.pushState: we must wait', arguments);1450 History.pushQueue({1451 scope: History,1452 callback: History.pushState,1453 args: arguments,1454 queue: queue1455 });1456 return false;1457 }1458 // Make Busy + Continue1459 History.busy(true);1460 // Create the newState1461 var newState = History.createStateObject(data,title,url);1462 // Check it1463 if ( History.isLastSavedState(newState) ) {1464 // Won't be a change1465 History.busy(false);1466 }1467 else {1468 // Store the newState1469 History.storeState(newState);1470 History.expectedStateId = newState.id;1471 // Push the newState1472 history.pushState(newState.id,newState.title,newState.url);1473 // Fire HTML5 Event1474 History.Adapter.trigger(window,'popstate');1475 }1476 // End pushState closure1477 return true;1478 };1479 /**1480 * History.replaceState(data,title,url)1481 * Replace the State and trigger onpopstate1482 * We have to trigger for HTML4 compatibility1483 * @param {object} data1484 * @param {string} title1485 * @param {string} url1486 * @return {true}1487 */1488 History.replaceState = function(data,title,url,queue){1489 //History.debug('History.replaceState: called', arguments);1490 // Check the State1491 if ( History.getHashByUrl(url) && History.emulated.pushState ) {1492 throw new Error('History.js does not support states with fragement-identifiers (hashes/anchors).');1493 }1494 // Handle Queueing1495 if ( queue !== false && History.busy() ) {1496 // Wait + Push to Queue1497 //History.debug('History.replaceState: we must wait', arguments);1498 History.pushQueue({1499 scope: History,1500 callback: History.replaceState,1501 args: arguments,1502 queue: queue1503 });1504 return false;1505 }1506 // Make Busy + Continue1507 History.busy(true);1508 // Create the newState1509 var newState = History.createStateObject(data,title,url);1510 // Check it1511 if ( History.isLastSavedState(newState) ) {1512 // Won't be a change1513 History.busy(false);1514 }1515 else {1516 // Store the newState1517 History.storeState(newState);1518 History.expectedStateId = newState.id;1519 // Push the newState1520 history.replaceState(newState.id,newState.title,newState.url);1521 // Fire HTML5 Event1522 History.Adapter.trigger(window,'popstate');1523 }1524 // End replaceState closure1525 return true;1526 };1527 } // !History.emulated.pushState1528 // ====================================================================1529 // Initialise1530 /**1531 * Load the Store1532 */1533 if ( sessionStorage ) {1534 // Fetch1535 try {1536 History.store = JSON.parse(sessionStorage.getItem('History.store'))||{};1537 }1538 catch ( err ) {1539 History.store = {};1540 }1541 // Normalize1542 History.normalizeStore();1543 }1544 else {1545 // Default Load1546 History.store = {};1547 History.normalizeStore();1548 }1549 /**1550 * Clear Intervals on exit to prevent memory leaks1551 */1552 History.Adapter.bind(window,"beforeunload",History.clearAllIntervals);1553 History.Adapter.bind(window,"unload",History.clearAllIntervals);1554 /**1555 * Create the initial State1556 */1557 History.saveState(History.storeState(History.extractState(document.location.href,true)));1558 /**1559 * Bind for Saving Store1560 */1561 if ( sessionStorage ) {1562 // When the page is closed1563 History.onUnload = function(){1564 // Prepare1565 var currentStore, item;1566 // Fetch1567 try {1568 currentStore = JSON.parse(sessionStorage.getItem('History.store'))||{};1569 }1570 catch ( err ) {1571 currentStore = {};1572 }1573 // Ensure1574 currentStore.idToState = currentStore.idToState || {};1575 currentStore.urlToId = currentStore.urlToId || {};1576 currentStore.stateToId = currentStore.stateToId || {};1577 // Sync1578 for ( item in History.idToState ) {1579 if ( !History.idToState.hasOwnProperty(item) ) {1580 continue;1581 }1582 currentStore.idToState[item] = History.idToState[item];1583 }1584 for ( item in History.urlToId ) {1585 if ( !History.urlToId.hasOwnProperty(item) ) {1586 continue;1587 }1588 currentStore.urlToId[item] = History.urlToId[item];1589 }1590 for ( item in History.stateToId ) {1591 if ( !History.stateToId.hasOwnProperty(item) ) {1592 continue;1593 }1594 currentStore.stateToId[item] = History.stateToId[item];1595 }1596 // Update1597 History.store = currentStore;1598 History.normalizeStore();1599 // Store1600 sessionStorage.setItem('History.store',JSON.stringify(currentStore));1601 };1602 // For Internet Explorer1603 History.intervalList.push(setInterval(History.onUnload,History.options.storeInterval));1604 1605 // For Other Browsers1606 History.Adapter.bind(window,'beforeunload',History.onUnload);1607 History.Adapter.bind(window,'unload',History.onUnload);1608 1609 // Both are enabled for consistency1610 }1611 // Non-Native pushState Implementation1612 if ( !History.emulated.pushState ) {1613 // Be aware, the following is only for native pushState implementations1614 // If you are wanting to include something for all browsers1615 // Then include it above this if block1616 /**1617 * Setup Safari Fix1618 */1619 if ( History.bugs.safariPoll ) {1620 History.intervalList.push(setInterval(History.safariStatePoll, History.options.safariPollInterval));1621 }1622 /**1623 * Ensure Cross Browser Compatibility1624 */1625 if ( navigator.vendor === 'Apple Computer, Inc.' || (navigator.appCodeName||'') === 'Mozilla' ) {1626 /**1627 * Fix Safari HashChange Issue1628 */1629 // Setup Alias1630 History.Adapter.bind(window,'hashchange',function(){1631 History.Adapter.trigger(window,'popstate');1632 });1633 // Initialise Alias1634 if ( History.getHash() ) {1635 History.Adapter.onDomLoad(function(){1636 History.Adapter.trigger(window,'hashchange');1637 });1638 }1639 }1640 } // !History.emulated.pushState1641 }; // History.initCore1642 // Try and Initialise History1643 History.init();...

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history.html4.js

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1/**2 * History.js HTML4 Support3 * Depends on the HTML5 Support4 * @author Benjamin Arthur Lupton <contact@balupton.com>5 * @copyright 2010-2011 Benjamin Arthur Lupton <contact@balupton.com>6 * @license New BSD License <http://creativecommons.org/licenses/BSD/>7 */8(function(window,undefined){9 "use strict";10 // ========================================================================11 // Initialise12 // Localise Globals13 var14 document = window.document, // Make sure we are using the correct document15 setTimeout = window.setTimeout||setTimeout,16 clearTimeout = window.clearTimeout||clearTimeout,17 setInterval = window.setInterval||setInterval,18 History = window.History = window.History||{}; // Public History Object19 // Check Existence20 if ( typeof History.initHtml4 !== 'undefined' ) {21 throw new Error('History.js HTML4 Support has already been loaded...');22 }23 // ========================================================================24 // Initialise HTML4 Support25 // Initialise HTML4 Support26 History.initHtml4 = function(){27 // Initialise28 if ( typeof History.initHtml4.initialized !== 'undefined' ) {29 // Already Loaded30 return false;31 }32 else {33 History.initHtml4.initialized = true;34 }35 // ====================================================================36 // Properties37 /**38 * History.enabled39 * Is History enabled?40 */41 History.enabled = true;42 // ====================================================================43 // Hash Storage44 /**45 * History.savedHashes46 * Store the hashes in an array47 */48 History.savedHashes = [];49 /**50 * History.isLastHash(newHash)51 * Checks if the hash is the last hash52 * @param {string} newHash53 * @return {boolean} true54 */55 History.isLastHash = function(newHash){56 // Prepare57 var oldHash = History.getHashByIndex(),58 isLast;59 // Check60 isLast = newHash === oldHash;61 // Return isLast62 return isLast;63 };64 /**65 * History.saveHash(newHash)66 * Push a Hash67 * @param {string} newHash68 * @return {boolean} true69 */70 History.saveHash = function(newHash){71 // Check Hash72 if ( History.isLastHash(newHash) ) {73 return false;74 }75 // Push the Hash76 History.savedHashes.push(newHash);77 // Return true78 return true;79 };80 /**81 * History.getHashByIndex()82 * Gets a hash by the index83 * @param {integer} index84 * @return {string}85 */86 History.getHashByIndex = function(index){87 // Prepare88 var hash = null;89 // Handle90 if ( typeof index === 'undefined' ) {91 // Get the last inserted92 hash = History.savedHashes[History.savedHashes.length-1];93 }94 else if ( index < 0 ) {95 // Get from the end96 hash = History.savedHashes[History.savedHashes.length+index];97 }98 else {99 // Get from the beginning100 hash = History.savedHashes[index];101 }102 // Return hash103 return hash;104 };105 // ====================================================================106 // Discarded States107 /**108 * History.discardedHashes109 * A hashed array of discarded hashes110 */111 History.discardedHashes = {};112 /**113 * History.discardedStates114 * A hashed array of discarded states115 */116 History.discardedStates = {};117 /**118 * History.discardState(State)119 * Discards the state by ignoring it through History120 * @param {object} State121 * @return {true}122 */123 History.discardState = function(discardedState,forwardState,backState){124 //History.debug('History.discardState', arguments);125 // Prepare126 var discardedStateHash = History.getHashByState(discardedState),127 discardObject;128 // Create Discard Object129 discardObject = {130 'discardedState': discardedState,131 'backState': backState,132 'forwardState': forwardState133 };134 // Add to DiscardedStates135 History.discardedStates[discardedStateHash] = discardObject;136 // Return true137 return true;138 };139 /**140 * History.discardHash(hash)141 * Discards the hash by ignoring it through History142 * @param {string} hash143 * @return {true}144 */145 History.discardHash = function(discardedHash,forwardState,backState){146 //History.debug('History.discardState', arguments);147 // Create Discard Object148 var discardObject = {149 'discardedHash': discardedHash,150 'backState': backState,151 'forwardState': forwardState152 };153 // Add to discardedHash154 History.discardedHashes[discardedHash] = discardObject;155 // Return true156 return true;157 };158 /**159 * History.discardState(State)160 * Checks to see if the state is discarded161 * @param {object} State162 * @return {bool}163 */164 History.discardedState = function(State){165 // Prepare166 var StateHash = History.getHashByState(State),167 discarded;168 // Check169 discarded = History.discardedStates[StateHash]||false;170 // Return true171 return discarded;172 };173 /**174 * History.discardedHash(hash)175 * Checks to see if the state is discarded176 * @param {string} State177 * @return {bool}178 */179 History.discardedHash = function(hash){180 // Check181 var discarded = History.discardedHashes[hash]||false;182 // Return true183 return discarded;184 };185 /**186 * History.recycleState(State)187 * Allows a discarded state to be used again188 * @param {object} data189 * @param {string} title190 * @param {string} url191 * @return {true}192 */193 History.recycleState = function(State){194 //History.debug('History.recycleState', arguments);195 // Prepare196 var StateHash = History.getHashByState(State);197 // Remove from DiscardedStates198 if ( History.discardedState(State) ) {199 delete History.discardedStates[StateHash];200 }201 // Return true202 return true;203 };204 // ====================================================================205 // HTML4 HashChange Support206 if ( History.emulated.hashChange ) {207 /*208 * We must emulate the HTML4 HashChange Support by manually checking for hash changes209 */210 /**211 * History.hashChangeInit()212 * Init the HashChange Emulation213 */214 History.hashChangeInit = function(){215 // Define our Checker Function216 History.checkerFunction = null;217 // Define some variables that will help in our checker function218 var lastDocumentHash = '',219 iframeId, iframe,220 lastIframeHash, checkerRunning;221 // Handle depending on the browser222 if ( History.isInternetExplorer() ) {223 // IE6 and IE7224 // We need to use an iframe to emulate the back and forward buttons225 // Create iFrame226 iframeId = 'historyjs-iframe';227 iframe = document.createElement('iframe');228 // Adjust iFarme229 iframe.setAttribute('id', iframeId);230 iframe.style.display = 'none';231 // Append iFrame232 document.body.appendChild(iframe);233 // Create initial history entry234 iframe.contentWindow.document.open();235 iframe.contentWindow.document.close();236 // Define some variables that will help in our checker function237 lastIframeHash = '';238 checkerRunning = false;239 // Define the checker function240 History.checkerFunction = function(){241 // Check Running242 if ( checkerRunning ) {243 return false;244 }245 // Update Running246 checkerRunning = true;247 // Fetch248 var documentHash = History.getHash()||'',249 iframeHash = History.unescapeHash(iframe.contentWindow.document.location.hash)||'';250 // The Document Hash has changed (application caused)251 if ( documentHash !== lastDocumentHash ) {252 // Equalise253 lastDocumentHash = documentHash;254 // Create a history entry in the iframe255 if ( iframeHash !== documentHash ) {256 //History.debug('hashchange.checker: iframe hash change', 'documentHash (new):', documentHash, 'iframeHash (old):', iframeHash);257 // Equalise258 lastIframeHash = iframeHash = documentHash;259 // Create History Entry260 iframe.contentWindow.document.open();261 iframe.contentWindow.document.close();262 // Update the iframe's hash263 iframe.contentWindow.document.location.hash = History.escapeHash(documentHash);264 }265 // Trigger Hashchange Event266 History.Adapter.trigger(window,'hashchange');267 }268 // The iFrame Hash has changed (back button caused)269 else if ( iframeHash !== lastIframeHash ) {270 //History.debug('hashchange.checker: iframe hash out of sync', 'iframeHash (new):', iframeHash, 'documentHash (old):', documentHash);271 // Equalise272 lastIframeHash = iframeHash;273 // Update the Hash274 History.setHash(iframeHash,false);275 }276 // Reset Running277 checkerRunning = false;278 // Return true279 return true;280 };281 }282 else {283 // We are not IE284 // Firefox 1 or 2, Opera285 // Define the checker function286 History.checkerFunction = function(){287 // Prepare288 var documentHash = History.getHash();289 // The Document Hash has changed (application caused)290 if ( documentHash !== lastDocumentHash ) {291 // Equalise292 lastDocumentHash = documentHash;293 // Trigger Hashchange Event294 History.Adapter.trigger(window,'hashchange');295 }296 // Return true297 return true;298 };299 }300 // Apply the checker function301 History.intervalList.push(setInterval(History.checkerFunction, History.options.hashChangeInterval));302 // Done303 return true;304 }; // History.hashChangeInit305 // Bind hashChangeInit306 History.Adapter.onDomLoad(History.hashChangeInit);307 } // History.emulated.hashChange308 // ====================================================================309 // HTML5 State Support310 // Non-Native pushState Implementation311 if ( History.emulated.pushState ) {312 /*313 * We must emulate the HTML5 State Management by using HTML4 HashChange314 */315 /**316 * History.onHashChange(event)317 * Trigger HTML5's window.onpopstate via HTML4 HashChange Support318 */319 History.onHashChange = function(event){320 //History.debug('History.onHashChange', arguments);321 // Prepare322 var currentUrl = ((event && event.newURL) || document.location.href),323 currentHash = History.getHashByUrl(currentUrl),324 currentState = null,325 currentStateHash = null,326 currentStateHashExits = null,327 discardObject;328 // Check if we are the same state329 if ( History.isLastHash(currentHash) ) {330 // There has been no change (just the page's hash has finally propagated)331 //History.debug('History.onHashChange: no change');332 History.busy(false);333 return false;334 }335 // Reset the double check336 History.doubleCheckComplete();337 // Store our location for use in detecting back/forward direction338 History.saveHash(currentHash);339 // Expand Hash340 if ( currentHash && History.isTraditionalAnchor(currentHash) ) {341 //History.debug('History.onHashChange: traditional anchor', currentHash);342 // Traditional Anchor Hash343 History.Adapter.trigger(window,'anchorchange');344 History.busy(false);345 return false;346 }347 // Create State348 currentState = History.extractState(History.getFullUrl(currentHash||document.location.href,false),true);349 // Check if we are the same state350 if ( History.isLastSavedState(currentState) ) {351 //History.debug('History.onHashChange: no change');352 // There has been no change (just the page's hash has finally propagated)353 History.busy(false);354 return false;355 }356 // Create the state Hash357 currentStateHash = History.getHashByState(currentState);358 // Check if we are DiscardedState359 discardObject = History.discardedState(currentState);360 if ( discardObject ) {361 // Ignore this state as it has been discarded and go back to the state before it362 if ( History.getHashByIndex(-2) === History.getHashByState(discardObject.forwardState) ) {363 // We are going backwards364 //History.debug('History.onHashChange: go backwards');365 History.back(false);366 } else {367 // We are going forwards368 //History.debug('History.onHashChange: go forwards');369 History.forward(false);370 }371 return false;372 }373 // Push the new HTML5 State374 //History.debug('History.onHashChange: success hashchange');375 History.pushState(currentState.data,currentState.title,currentState.url,false);376 // End onHashChange closure377 return true;378 };379 History.Adapter.bind(window,'hashchange',History.onHashChange);380 /**381 * History.pushState(data,title,url)382 * Add a new State to the history object, become it, and trigger onpopstate383 * We have to trigger for HTML4 compatibility384 * @param {object} data385 * @param {string} title386 * @param {string} url387 * @return {true}388 */389 History.pushState = function(data,title,url,queue){390 //History.debug('History.pushState: called', arguments);391 // Check the State392 if ( History.getHashByUrl(url) ) {393 throw new Error('History.js does not support states with fragement-identifiers (hashes/anchors).');394 }395 // Handle Queueing396 if ( queue !== false && History.busy() ) {397 // Wait + Push to Queue398 //History.debug('History.pushState: we must wait', arguments);399 History.pushQueue({400 scope: History,401 callback: History.pushState,402 args: arguments,403 queue: queue404 });405 return false;406 }407 // Make Busy408 History.busy(true);409 // Fetch the State Object410 var newState = History.createStateObject(data,title,url),411 newStateHash = History.getHashByState(newState),412 oldState = History.getState(false),413 oldStateHash = History.getHashByState(oldState),414 html4Hash = History.getHash();415 // Store the newState416 History.storeState(newState);417 History.expectedStateId = newState.id;418 // Recycle the State419 History.recycleState(newState);420 // Force update of the title421 History.setTitle(newState);422 // Check if we are the same State423 if ( newStateHash === oldStateHash ) {424 //History.debug('History.pushState: no change', newStateHash);425 History.busy(false);426 return false;427 }428 // Update HTML4 Hash429 if ( newStateHash !== html4Hash && newStateHash !== History.getShortUrl(document.location.href) ) {430 //History.debug('History.pushState: update hash', newStateHash, html4Hash);431 History.setHash(newStateHash,false);432 return false;433 }434 // Update HTML5 State435 History.saveState(newState);436 // Fire HTML5 Event437 //History.debug('History.pushState: trigger popstate');438 History.Adapter.trigger(window,'statechange');439 History.busy(false);440 // End pushState closure441 return true;442 };443 /**444 * History.replaceState(data,title,url)445 * Replace the State and trigger onpopstate446 * We have to trigger for HTML4 compatibility447 * @param {object} data448 * @param {string} title449 * @param {string} url450 * @return {true}451 */452 History.replaceState = function(data,title,url,queue){453 //History.debug('History.replaceState: called', arguments);454 // Check the State455 if ( History.getHashByUrl(url) ) {456 throw new Error('History.js does not support states with fragement-identifiers (hashes/anchors).');457 }458 // Handle Queueing459 if ( queue !== false && History.busy() ) {460 // Wait + Push to Queue461 //History.debug('History.replaceState: we must wait', arguments);462 History.pushQueue({463 scope: History,464 callback: History.replaceState,465 args: arguments,466 queue: queue467 });468 return false;469 }470 // Make Busy471 History.busy(true);472 // Fetch the State Objects473 var newState = History.createStateObject(data,title,url),474 oldState = History.getState(false),475 previousState = History.getStateByIndex(-2);476 // Discard Old State477 History.discardState(oldState,newState,previousState);478 // Alias to PushState479 History.pushState(newState.data,newState.title,newState.url,false);480 // End replaceState closure481 return true;482 };483 } // History.emulated.pushState484 // ====================================================================485 // Initialise486 // Non-Native pushState Implementation487 if ( History.emulated.pushState ) {488 /**489 * Ensure initial state is handled correctly490 */491 if ( History.getHash() && !History.emulated.hashChange ) {492 History.Adapter.onDomLoad(function(){493 History.Adapter.trigger(window,'hashchange');494 });495 }496 } // History.emulated.pushState497 }; // History.initHtml4498 // Try and Initialise History499 if ( typeof History.init !== 'undefined' ) {500 History.init();501 }...

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history-html5-coverage.js

Source:history-html5-coverage.js Github

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1/*2YUI 3.7.3 (build 5687)3Copyright 2012 Yahoo! Inc. All rights reserved.4Licensed under the BSD License.5http://yuilibrary.com/license/6*/7if (typeof _yuitest_coverage == "undefined"){8 _yuitest_coverage = {};9 _yuitest_coverline = function(src, line){10 var coverage = _yuitest_coverage[src];11 if (!coverage.lines[line]){12 coverage.calledLines++;13 }14 coverage.lines[line]++;15 };16 _yuitest_coverfunc = function(src, name, line){17 var coverage = _yuitest_coverage[src],18 funcId = name + ":" + line;19 if (!coverage.functions[funcId]){20 coverage.calledFunctions++;21 }22 coverage.functions[funcId]++;23 };24}25_yuitest_coverage["build/history-html5/history-html5.js"] = {26 lines: {},27 functions: {},28 coveredLines: 0,29 calledLines: 0,30 coveredFunctions: 0,31 calledFunctions: 0,32 path: "build/history-html5/history-html5.js",33 code: []34};35_yuitest_coverage["build/history-html5/history-html5.js"].code=["YUI.add('history-html5', function (Y, NAME) {","","/**"," * Provides browser history management using the HTML5 history API."," *"," * @module history"," * @submodule history-html5"," * @since 3.2.0"," */","","/**"," * <p>"," * Provides browser history management using the HTML5 history API."," * </p>"," *"," * <p>"," * When calling the <code>add()</code>, <code>addValue()</code>,"," * <code>replace()</code>, or <code>replaceValue()</code> methods on"," * <code>HistoryHTML5</code>, the following additional options are supported:"," * </p>"," *"," * <dl>"," * <dt><strong>title (String)</strong></dt>"," * <dd>"," * Title to use for the new history entry. Browsers will typically display"," * this title to the user in the detailed history window or in a dropdown"," * menu attached to the back/forward buttons. If not specified, the title"," * of the current document will be used."," * </dd>"," *"," * <dt><strong>url (String)</strong></dt>"," * <dd>"," * URL to display to the user for the new history entry. This URL will be"," * visible in the browser's address bar and will be the bookmarked URL if"," * the user bookmarks the page. It may be a relative path (\"foo/bar\"), an"," * absolute path (\"/foo/bar\"), or a full URL (\"http://example.com/foo/bar\")."," * If you specify a full URL, the origin <i>must</i> be the same as the"," * origin of the current page, or an error will occur. If no URL is"," * specified, the current URL will not be changed."," * </dd>"," * </dl>"," *"," * @class HistoryHTML5"," * @extends HistoryBase"," * @constructor"," * @param {Object} config (optional) Configuration object."," */","","var HistoryBase = Y.HistoryBase,"," Lang = Y.Lang,"," win = Y.config.win,"," useHistoryHTML5 = Y.config.useHistoryHTML5,",""," SRC_POPSTATE = 'popstate',"," SRC_REPLACE = HistoryBase.SRC_REPLACE;","","function HistoryHTML5() {"," HistoryHTML5.superclass.constructor.apply(this, arguments);","}","","Y.extend(HistoryHTML5, HistoryBase, {"," // -- Initialization -------------------------------------------------------"," _init: function (config) {"," var bookmarkedState = win.history.state;",""," // Treat empty state objects as `null` so they're not processed further."," if (Y.Object.isEmpty(bookmarkedState)) {"," bookmarkedState = null;"," }",""," config || (config = {});",""," // If both the initial state and the bookmarked state are objects, merge"," // them (bookmarked state wins)."," if (config.initialState"," && Lang.type(config.initialState) === 'object'"," && Lang.type(bookmarkedState) === 'object') {",""," this._initialState = Y.merge(config.initialState, bookmarkedState);"," } else {"," // Otherwise, the bookmarked state always wins if there is one. If"," // there isn't a bookmarked state, history-base will take care of"," // falling back to config.initialState or null."," this._initialState = bookmarkedState;"," }",""," Y.on('popstate', this._onPopState, win, this);",""," HistoryHTML5.superclass._init.apply(this, arguments);"," },",""," // -- Protected Methods ----------------------------------------------------",""," /**"," * Overrides HistoryBase's <code>_storeState()</code> and pushes or replaces"," * a history entry using the HTML5 history API when necessary."," *"," * @method _storeState"," * @param {String} src Source of the changes."," * @param {Object} newState New state to store."," * @param {Object} options Zero or more options."," * @protected"," */"," _storeState: function (src, newState, options) {"," if (src !== SRC_POPSTATE) {"," win.history[src === SRC_REPLACE ? 'replaceState' : 'pushState']("," newState,"," options.title || Y.config.doc.title || '',"," options.url || null"," );"," }",""," HistoryHTML5.superclass._storeState.apply(this, arguments);"," },",""," // -- Protected Event Handlers ---------------------------------------------",""," /**"," * Handler for popstate events."," *"," * @method _onPopState"," * @param {Event} e"," * @protected"," */"," _onPopState: function (e) {"," this._resolveChanges(SRC_POPSTATE, e._event.state || null);"," }","}, {"," // -- Public Static Properties ---------------------------------------------"," NAME: 'historyhtml5',",""," /**"," * Constant used to identify state changes originating from"," * <code>popstate</code> events."," *"," * @property SRC_POPSTATE"," * @type String"," * @static"," * @final"," */"," SRC_POPSTATE: SRC_POPSTATE","});","","if (!Y.Node.DOM_EVENTS.popstate) {"," Y.Node.DOM_EVENTS.popstate = 1;","}","","Y.HistoryHTML5 = HistoryHTML5;","","/**"," * <p>"," * If <code>true</code>, the <code>Y.History</code> alias will always point to"," * <code>Y.HistoryHTML5</code> when the history-html5 module is loaded, even if"," * the current browser doesn't support HTML5 history."," * </p>"," *"," * <p>"," * If <code>false</code>, the <code>Y.History</code> alias will always point to"," * <code>Y.HistoryHash</code> when the history-hash module is loaded, even if"," * the current browser supports HTML5 history."," * </p>"," *"," * <p>"," * If neither <code>true</code> nor <code>false</code>, the"," * <code>Y.History</code> alias will point to the best available history adapter"," * that the browser supports. This is the default behavior."," * </p>"," *"," * @property useHistoryHTML5"," * @type boolean"," * @for config"," * @since 3.2.0"," */","","// HistoryHTML5 will always win over HistoryHash unless useHistoryHTML5 is false","// or HTML5 history is not supported.","if (useHistoryHTML5 === true || (useHistoryHTML5 !== false &&"," HistoryBase.html5)) {"," Y.History = HistoryHTML5;","}","","","}, '3.7.3', {\"optional\": [\"json\"], \"requires\": [\"event-base\", \"history-base\", \"node-base\"]});"];36_yuitest_coverage["build/history-html5/history-html5.js"].lines = {"1":0,"49":0,"57":0,"58":0,"61":0,"64":0,"67":0,"68":0,"71":0,"75":0,"79":0,"84":0,"87":0,"89":0,"105":0,"106":0,"113":0,"126":0,"144":0,"145":0,"148":0,"177":0,"179":0};37_yuitest_coverage["build/history-html5/history-html5.js"].functions = {"HistoryHTML5:57":0,"_init:63":0,"_storeState:104":0,"_onPopState:125":0,"(anonymous 1):1":0};38_yuitest_coverage["build/history-html5/history-html5.js"].coveredLines = 23;39_yuitest_coverage["build/history-html5/history-html5.js"].coveredFunctions = 5;40_yuitest_coverline("build/history-html5/history-html5.js", 1);41YUI.add('history-html5', function (Y, NAME) {42/**43 * Provides browser history management using the HTML5 history API.44 *45 * @module history46 * @submodule history-html547 * @since 3.2.048 */49/**50 * <p>51 * Provides browser history management using the HTML5 history API.52 * </p>53 *54 * <p>55 * When calling the <code>add()</code>, <code>addValue()</code>,56 * <code>replace()</code>, or <code>replaceValue()</code> methods on57 * <code>HistoryHTML5</code>, the following additional options are supported:58 * </p>59 *60 * <dl>61 * <dt><strong>title (String)</strong></dt>62 * <dd>63 * Title to use for the new history entry. Browsers will typically display64 * this title to the user in the detailed history window or in a dropdown65 * menu attached to the back/forward buttons. If not specified, the title66 * of the current document will be used.67 * </dd>68 *69 * <dt><strong>url (String)</strong></dt>70 * <dd>71 * URL to display to the user for the new history entry. This URL will be72 * visible in the browser's address bar and will be the bookmarked URL if73 * the user bookmarks the page. It may be a relative path ("foo/bar"), an74 * absolute path ("/foo/bar"), or a full URL ("http://example.com/foo/bar").75 * If you specify a full URL, the origin <i>must</i> be the same as the76 * origin of the current page, or an error will occur. If no URL is77 * specified, the current URL will not be changed.78 * </dd>79 * </dl>80 *81 * @class HistoryHTML582 * @extends HistoryBase83 * @constructor84 * @param {Object} config (optional) Configuration object.85 */86_yuitest_coverfunc("build/history-html5/history-html5.js", "(anonymous 1)", 1);87_yuitest_coverline("build/history-html5/history-html5.js", 49);88var HistoryBase = Y.HistoryBase,89 Lang = Y.Lang,90 win = Y.config.win,91 useHistoryHTML5 = Y.config.useHistoryHTML5,92 SRC_POPSTATE = 'popstate',93 SRC_REPLACE = HistoryBase.SRC_REPLACE;94_yuitest_coverline("build/history-html5/history-html5.js", 57);95function HistoryHTML5() {96 _yuitest_coverfunc("build/history-html5/history-html5.js", "HistoryHTML5", 57);97_yuitest_coverline("build/history-html5/history-html5.js", 58);98HistoryHTML5.superclass.constructor.apply(this, arguments);99}100_yuitest_coverline("build/history-html5/history-html5.js", 61);101Y.extend(HistoryHTML5, HistoryBase, {102 // -- Initialization -------------------------------------------------------103 _init: function (config) {104 _yuitest_coverfunc("build/history-html5/history-html5.js", "_init", 63);105_yuitest_coverline("build/history-html5/history-html5.js", 64);106var bookmarkedState = win.history.state;107 // Treat empty state objects as `null` so they're not processed further.108 _yuitest_coverline("build/history-html5/history-html5.js", 67);109if (Y.Object.isEmpty(bookmarkedState)) {110 _yuitest_coverline("build/history-html5/history-html5.js", 68);111bookmarkedState = null;112 }113 _yuitest_coverline("build/history-html5/history-html5.js", 71);114config || (config = {});115 // If both the initial state and the bookmarked state are objects, merge116 // them (bookmarked state wins).117 _yuitest_coverline("build/history-html5/history-html5.js", 75);118if (config.initialState119 && Lang.type(config.initialState) === 'object'120 && Lang.type(bookmarkedState) === 'object') {121 _yuitest_coverline("build/history-html5/history-html5.js", 79);122this._initialState = Y.merge(config.initialState, bookmarkedState);123 } else {124 // Otherwise, the bookmarked state always wins if there is one. If125 // there isn't a bookmarked state, history-base will take care of126 // falling back to config.initialState or null.127 _yuitest_coverline("build/history-html5/history-html5.js", 84);128this._initialState = bookmarkedState;129 }130 _yuitest_coverline("build/history-html5/history-html5.js", 87);131Y.on('popstate', this._onPopState, win, this);132 _yuitest_coverline("build/history-html5/history-html5.js", 89);133HistoryHTML5.superclass._init.apply(this, arguments);134 },135 // -- Protected Methods ----------------------------------------------------136 /**137 * Overrides HistoryBase's <code>_storeState()</code> and pushes or replaces138 * a history entry using the HTML5 history API when necessary.139 *140 * @method _storeState141 * @param {String} src Source of the changes.142 * @param {Object} newState New state to store.143 * @param {Object} options Zero or more options.144 * @protected145 */146 _storeState: function (src, newState, options) {147 _yuitest_coverfunc("build/history-html5/history-html5.js", "_storeState", 104);148_yuitest_coverline("build/history-html5/history-html5.js", 105);149if (src !== SRC_POPSTATE) {150 _yuitest_coverline("build/history-html5/history-html5.js", 106);151win.history[src === SRC_REPLACE ? 'replaceState' : 'pushState'](152 newState,153 options.title || Y.config.doc.title || '',154 options.url || null155 );156 }157 _yuitest_coverline("build/history-html5/history-html5.js", 113);158HistoryHTML5.superclass._storeState.apply(this, arguments);159 },160 // -- Protected Event Handlers ---------------------------------------------161 /**162 * Handler for popstate events.163 *164 * @method _onPopState165 * @param {Event} e166 * @protected167 */168 _onPopState: function (e) {169 _yuitest_coverfunc("build/history-html5/history-html5.js", "_onPopState", 125);170_yuitest_coverline("build/history-html5/history-html5.js", 126);171this._resolveChanges(SRC_POPSTATE, e._event.state || null);172 }173}, {174 // -- Public Static Properties ---------------------------------------------175 NAME: 'historyhtml5',176 /**177 * Constant used to identify state changes originating from178 * <code>popstate</code> events.179 *180 * @property SRC_POPSTATE181 * @type String182 * @static183 * @final184 */185 SRC_POPSTATE: SRC_POPSTATE186});187_yuitest_coverline("build/history-html5/history-html5.js", 144);188if (!Y.Node.DOM_EVENTS.popstate) {189 _yuitest_coverline("build/history-html5/history-html5.js", 145);190Y.Node.DOM_EVENTS.popstate = 1;191}192_yuitest_coverline("build/history-html5/history-html5.js", 148);193Y.HistoryHTML5 = HistoryHTML5;194/**195 * <p>196 * If <code>true</code>, the <code>Y.History</code> alias will always point to197 * <code>Y.HistoryHTML5</code> when the history-html5 module is loaded, even if198 * the current browser doesn't support HTML5 history.199 * </p>200 *201 * <p>202 * If <code>false</code>, the <code>Y.History</code> alias will always point to203 * <code>Y.HistoryHash</code> when the history-hash module is loaded, even if204 * the current browser supports HTML5 history.205 * </p>206 *207 * <p>208 * If neither <code>true</code> nor <code>false</code>, the209 * <code>Y.History</code> alias will point to the best available history adapter210 * that the browser supports. This is the default behavior.211 * </p>212 *213 * @property useHistoryHTML5214 * @type boolean215 * @for config216 * @since 3.2.0217 */218// HistoryHTML5 will always win over HistoryHash unless useHistoryHTML5 is false219// or HTML5 history is not supported.220_yuitest_coverline("build/history-html5/history-html5.js", 177);221if (useHistoryHTML5 === true || (useHistoryHTML5 !== false &&222 HistoryBase.html5)) {223 _yuitest_coverline("build/history-html5/history-html5.js", 179);224Y.History = HistoryHTML5;225}...

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history.py

Source:history.py Github

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...52 53 history_length=property(get_history_length,set_history_length)54 history_cursor=property(get_history_cursor,set_history_cursor)5556 def clear_history(self):57 '''Clear readline history.'''58 self.history[:] = []59 self.history_cursor = 06061 def read_history_file(self, filename=None): 62 '''Load a readline history file.'''63 if filename is None:64 filename=self.history_filename65 try:66 for line in open(filename, 'r'):67 self.add_history(lineobj.ReadLineTextBuffer(line.rstrip()))68 except IOError:69 self.history = []70 self.history_cursor = 07172 def write_history_file(self, filename=None): 73 '''Save a readline history file.'''74 if filename is None:75 filename=self.history_filename76 fp = open(filename, 'wb')77 for line in self.history[-self.history_length:]:78 fp.write(line.get_line_text())79 fp.write('\n')80 fp.close()818283 def add_history(self, line):84 '''Append a line to the history buffer, as if it was the last line typed.'''85 if not line.get_line_text():86 pass87 elif len(self.history) > 0 and self.history[-1].get_line_text() == line.get_line_text():88 pass89 else:90 self.history.append(line)91 self.history_cursor = len(self.history)9293 def previous_history(self,current): # (C-p)94 '''Move back through the history list, fetching the previous command. '''95 if self.history_cursor==len(self.history):96 self.history.append(current.copy()) #do not use add_history since we do not want to increment cursor97 98 if self.history_cursor > 0:99 self.history_cursor -= 1100 current.set_line(self.history[self.history_cursor].get_line_text())101 current.point=lineobj.EndOfLine102103 def next_history(self,current): # (C-n)104 '''Move forward through the history list, fetching the next command. '''105 if self.history_cursor < len(self.history)-1:106 self.history_cursor += 1107 current.set_line(self.history[self.history_cursor].get_line_text())108109 def beginning_of_history(self): # (M-<)110 '''Move to the first line in the history.'''111 self.history_cursor = 0112 if len(self.history) > 0:113 self.l_buffer = self.history[0]114115 def end_of_history(self,current): # (M->)116 '''Move to the end of the input history, i.e., the line currently117 being entered.'''118 self.history_cursor=len(self.history)119 current.set_line(self.history[-1].get_line_text())120121 def reverse_search_history(self,searchfor,startpos=None):122 if startpos is None:123 startpos=self.history_cursor124 res=[(idx,line) for idx,line in enumerate(self.history[startpos:0:-1]) if line.startswith(searchfor)]125 if res:126 self.history_cursor-=res[0][0]127 return res[0][1].get_line_text()128 return ""129 130 def forward_search_history(self,searchfor,startpos=None):131 if startpos is None:132 startpos=self.history_cursor133 res=[(idx,line) for idx,line in enumerate(self.history[startpos:]) if line.startswith(searchfor)]134 if res:135 self.history_cursor+=res[0][0]136 return res[0][1].get_line_text()137 return ""138139 def _non_i_search(self, direction, current):140 c = pyreadline.rl.console141 line = current.get_line_text()142 query = ''143 while 1:144 c.pos(*pyreadline.rl.prompt_end_pos)145 scroll = c.write_scrolling(":%s" % query)146 pyreadline.rl._update_prompt_pos(scroll)147 pyreadline.rl._clear_after()148149 event = c.getkeypress()150 log_sock(str(event),"history")151 152 if event.keyinfo.keyname == 'backspace':153 if len(query) > 0:154 query = query[:-1]155 else:156 break157 elif event.char in string.letters + string.digits + string.punctuation + ' ':158 query += event.char159 elif event.keyinfo.keyname == 'return':160 break161 else:162 pyreadline.rl._bell()163 log_sock(query,"history")164 res=""165 if query:166 if direction==-1:167 res=self.reverse_search_history(query)168 169 else:170 res=self.forward_search_history(query)171 log_sock(res,"history")172 return lineobj.ReadLineTextBuffer(res,point=0)173 174 def non_incremental_reverse_search_history(self,current): # (M-p)175 '''Search backward starting at the current line and moving up176 through the history as necessary using a non-incremental search for177 a string supplied by the user.'''178 return self._non_i_search(-1,current)179180 def non_incremental_forward_search_history(self,current): # (M-n)181 '''Search forward starting at the current line and moving down182 through the the history as necessary using a non-incremental search183 for a string supplied by the user.'''184 return self._non_i_search(1,current)185186 def _search(self, direction, partial):187 try:188 if (self.lastcommand != self.history_search_forward and189 self.lastcommand != self.history_search_backward):190 self.query = ''.join(partial[0:partial.point].get_line_text())191 hcstart=max(self.history_cursor,0) 192 log_sock("hcstart %s"%hcstart,"history")193 hc = self.history_cursor + direction194 while (direction < 0 and hc >= 0) or (direction > 0 and hc < len(self.history)):195 h = self.history[hc]196 if not self.query:197 self.history_cursor = hc198 result=lineobj.ReadLineTextBuffer(h,point=len(h.get_line_text()))199 return result200 elif h.get_line_text().startswith(self.query) and h != partial.get_line_text():201 self.history_cursor = hc202 result=lineobj.ReadLineTextBuffer(h,point=partial.point)203 return result204 hc += direction205 else:206 if len(self.history)==0:207 pass 208 elif hc>=len(self.history) and not self.query:209 self.history_cursor=len(self.history)210 return lineobj.ReadLineTextBuffer("",point=0)211 elif self.history[max(min(hcstart,len(self.history)-1),0)].get_line_text().startswith(self.query) and self.query:212 return lineobj.ReadLineTextBuffer(self.history[max(min(hcstart,len(self.history)-1),0)],point=partial.point)213 else: 214 return lineobj.ReadLineTextBuffer(partial,point=partial.point)215 return lineobj.ReadLineTextBuffer(self.query,point=min(len(self.query),partial.point))216 except IndexError:217 log_sock("hcstart:%s %s"%(hcstart,len(self.history)),"history")218 raise219220 def history_search_forward(self,partial): # ()221 '''Search forward through the history for the string of characters222 between the start of the current line and the point. This is a223 non-incremental search. By default, this command is unbound.'''224 q= self._search(1,partial)225 return q226227 def history_search_backward(self,partial): # ()228 '''Search backward through the history for the string of characters229 between the start of the current line and the point. This is a230 non-incremental search. By default, this command is unbound.'''231 232 q= self._search(-1,partial)233 return q234235236 237if __name__=="__main__":238 q=LineHistory()239 RL=lineobj.ReadLineTextBuffer240 q.add_history(RL("aaaa"))241 q.add_history(RL("aaba"))242 q.add_history(RL("aaca"))243 q.add_history(RL("akca"))244 q.add_history(RL("bbb")) ...

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