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Diffstat (limited to 'jquery/jquery.ba-1.3-hashchange.js')
| -rw-r--r-- | jquery/jquery.ba-1.3-hashchange.js | 390 |
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diff --git a/jquery/jquery.ba-1.3-hashchange.js b/jquery/jquery.ba-1.3-hashchange.js deleted file mode 100644 index 47105f4..0000000 --- a/jquery/jquery.ba-1.3-hashchange.js +++ /dev/null @@ -1,390 +0,0 @@ -/*! - * jQuery hashchange event - v1.3 - 7/21/2010 - * http://benalman.com/projects/jquery-hashchange-plugin/ - * - * Copyright (c) 2010 "Cowboy" Ben Alman - * Dual licensed under the MIT and GPL licenses. - * http://benalman.com/about/license/ - */ - -// Script: jQuery hashchange event -// -// *Version: 1.3, Last updated: 7/21/2010* -// -// Project Home - http://benalman.com/projects/jquery-hashchange-plugin/ -// GitHub - http://github.com/cowboy/jquery-hashchange/ -// Source - http://github.com/cowboy/jquery-hashchange/raw/master/jquery.ba-hashchange.js -// (Minified) - http://github.com/cowboy/jquery-hashchange/raw/master/jquery.ba-hashchange.min.js (0.8kb gzipped) -// -// About: License -// -// Copyright (c) 2010 "Cowboy" Ben Alman, -// Dual licensed under the MIT and GPL licenses. -// http://benalman.com/about/license/ -// -// About: Examples -// -// These working examples, complete with fully commented code, illustrate a few -// ways in which this plugin can be used. -// -// hashchange event - http://benalman.com/code/projects/jquery-hashchange/examples/hashchange/ -// document.domain - http://benalman.com/code/projects/jquery-hashchange/examples/document_domain/ -// -// About: Support and Testing -// -// Information about what version or versions of jQuery this plugin has been -// tested with, what browsers it has been tested in, and where the unit tests -// reside (so you can test it yourself). -// -// jQuery Versions - 1.2.6, 1.3.2, 1.4.1, 1.4.2 -// Browsers Tested - Internet Explorer 6-8, Firefox 2-4, Chrome 5-6, Safari 3.2-5, -// Opera 9.6-10.60, iPhone 3.1, Android 1.6-2.2, BlackBerry 4.6-5. -// Unit Tests - http://benalman.com/code/projects/jquery-hashchange/unit/ -// -// About: Known issues -// -// While this jQuery hashchange event implementation is quite stable and -// robust, there are a few unfortunate browser bugs surrounding expected -// hashchange event-based behaviors, independent of any JavaScript -// window.onhashchange abstraction. See the following examples for more -// information: -// -// Chrome: Back Button - http://benalman.com/code/projects/jquery-hashchange/examples/bug-chrome-back-button/ -// Firefox: Remote XMLHttpRequest - http://benalman.com/code/projects/jquery-hashchange/examples/bug-firefox-remote-xhr/ -// WebKit: Back Button in an Iframe - http://benalman.com/code/projects/jquery-hashchange/examples/bug-webkit-hash-iframe/ -// Safari: Back Button from a different domain - http://benalman.com/code/projects/jquery-hashchange/examples/bug-safari-back-from-diff-domain/ -// -// Also note that should a browser natively support the window.onhashchange -// event, but not report that it does, the fallback polling loop will be used. -// -// About: Release History -// -// 1.3 - (7/21/2010) Reorganized IE6/7 Iframe code to make it more -// "removable" for mobile-only development. Added IE6/7 document.title -// support. Attempted to make Iframe as hidden as possible by using -// techniques from http://www.paciellogroup.com/blog/?p=604. Added -// support for the "shortcut" format $(window).hashchange( fn ) and -// $(window).hashchange() like jQuery provides for built-in events. -// Renamed jQuery.hashchangeDelay to <jQuery.fn.hashchange.delay> and -// lowered its default value to 50. Added <jQuery.fn.hashchange.domain> -// and <jQuery.fn.hashchange.src> properties plus document-domain.html -// file to address access denied issues when setting document.domain in -// IE6/7. -// 1.2 - (2/11/2010) Fixed a bug where coming back to a page using this plugin -// from a page on another domain would cause an error in Safari 4. Also, -// IE6/7 Iframe is now inserted after the body (this actually works), -// which prevents the page from scrolling when the event is first bound. -// Event can also now be bound before DOM ready, but it won't be usable -// before then in IE6/7. -// 1.1 - (1/21/2010) Incorporated document.documentMode test to fix IE8 bug -// where browser version is incorrectly reported as 8.0, despite -// inclusion of the X-UA-Compatible IE=EmulateIE7 meta tag. -// 1.0 - (1/9/2010) Initial Release. Broke out the jQuery BBQ event.special -// window.onhashchange functionality into a separate plugin for users -// who want just the basic event & back button support, without all the -// extra awesomeness that BBQ provides. This plugin will be included as -// part of jQuery BBQ, but also be available separately. - -(function($,window,undefined){ - '$:nomunge'; // Used by YUI compressor. - - // Reused string. - var str_hashchange = 'hashchange', - - // Method / object references. - doc = document, - fake_onhashchange, - special = $.event.special, - - // Does the browser support window.onhashchange? Note that IE8 running in - // IE7 compatibility mode reports true for 'onhashchange' in window, even - // though the event isn't supported, so also test document.documentMode. - doc_mode = doc.documentMode, - supports_onhashchange = 'on' + str_hashchange in window && ( doc_mode === undefined || doc_mode > 7 ); - - // Get location.hash (or what you'd expect location.hash to be) sans any - // leading #. Thanks for making this necessary, Firefox! - function get_fragment( url ) { - url = url || location.href; - return '#' + url.replace( /^[^#]*#?(.*)$/, '$1' ); - }; - - // Method: jQuery.fn.hashchange - // - // Bind a handler to the window.onhashchange event or trigger all bound - // window.onhashchange event handlers. This behavior is consistent with - // jQuery's built-in event handlers. - // - // Usage: - // - // > jQuery(window).hashchange( [ handler ] ); - // - // Arguments: - // - // handler - (Function) Optional handler to be bound to the hashchange - // event. This is a "shortcut" for the more verbose form: - // jQuery(window).bind( 'hashchange', handler ). If handler is omitted, - // all bound window.onhashchange event handlers will be triggered. This - // is a shortcut for the more verbose - // jQuery(window).trigger( 'hashchange' ). These forms are described in - // the <hashchange event> section. - // - // Returns: - // - // (jQuery) The initial jQuery collection of elements. - - // Allow the "shortcut" format $(elem).hashchange( fn ) for binding and - // $(elem).hashchange() for triggering, like jQuery does for built-in events. - $.fn[ str_hashchange ] = function( fn ) { - return fn ? this.bind( str_hashchange, fn ) : this.trigger( str_hashchange ); - }; - - // Property: jQuery.fn.hashchange.delay - // - // The numeric interval (in milliseconds) at which the <hashchange event> - // polling loop executes. Defaults to 50. - - // Property: jQuery.fn.hashchange.domain - // - // If you're setting document.domain in your JavaScript, and you want hash - // history to work in IE6/7, not only must this property be set, but you must - // also set document.domain BEFORE jQuery is loaded into the page. This - // property is only applicable if you are supporting IE6/7 (or IE8 operating - // in "IE7 compatibility" mode). - // - // In addition, the <jQuery.fn.hashchange.src> property must be set to the - // path of the included "document-domain.html" file, which can be renamed or - // modified if necessary (note that the document.domain specified must be the - // same in both your main JavaScript as well as in this file). - // - // Usage: - // - // jQuery.fn.hashchange.domain = document.domain; - - // Property: jQuery.fn.hashchange.src - // - // If, for some reason, you need to specify an Iframe src file (for example, - // when setting document.domain as in <jQuery.fn.hashchange.domain>), you can - // do so using this property. Note that when using this property, history - // won't be recorded in IE6/7 until the Iframe src file loads. This property - // is only applicable if you are supporting IE6/7 (or IE8 operating in "IE7 - // compatibility" mode). - // - // Usage: - // - // jQuery.fn.hashchange.src = 'path/to/file.html'; - - $.fn[ str_hashchange ].delay = 50; - /* - $.fn[ str_hashchange ].domain = null; - $.fn[ str_hashchange ].src = null; - */ - - // Event: hashchange event - // - // Fired when location.hash changes. In browsers that support it, the native - // HTML5 window.onhashchange event is used, otherwise a polling loop is - // initialized, running every <jQuery.fn.hashchange.delay> milliseconds to - // see if the hash has changed. In IE6/7 (and IE8 operating in "IE7 - // compatibility" mode), a hidden Iframe is created to allow the back button - // and hash-based history to work. - // - // Usage as described in <jQuery.fn.hashchange>: - // - // > // Bind an event handler. - // > jQuery(window).hashchange( function(e) { - // > var hash = location.hash; - // > ... - // > }); - // > - // > // Manually trigger the event handler. - // > jQuery(window).hashchange(); - // - // A more verbose usage that allows for event namespacing: - // - // > // Bind an event handler. - // > jQuery(window).bind( 'hashchange', function(e) { - // > var hash = location.hash; - // > ... - // > }); - // > - // > // Manually trigger the event handler. - // > jQuery(window).trigger( 'hashchange' ); - // - // Additional Notes: - // - // * The polling loop and Iframe are not created until at least one handler - // is actually bound to the 'hashchange' event. - // * If you need the bound handler(s) to execute immediately, in cases where - // a location.hash exists on page load, via bookmark or page refresh for - // example, use jQuery(window).hashchange() or the more verbose - // jQuery(window).trigger( 'hashchange' ). - // * The event can be bound before DOM ready, but since it won't be usable - // before then in IE6/7 (due to the necessary Iframe), recommended usage is - // to bind it inside a DOM ready handler. - - // Override existing $.event.special.hashchange methods (allowing this plugin - // to be defined after jQuery BBQ in BBQ's source code). - special[ str_hashchange ] = $.extend( special[ str_hashchange ], { - - // Called only when the first 'hashchange' event is bound to window. - setup: function() { - // If window.onhashchange is supported natively, there's nothing to do.. - if ( supports_onhashchange ) { return false; } - - // Otherwise, we need to create our own. And we don't want to call this - // until the user binds to the event, just in case they never do, since it - // will create a polling loop and possibly even a hidden Iframe. - $( fake_onhashchange.start ); - }, - - // Called only when the last 'hashchange' event is unbound from window. - teardown: function() { - // If window.onhashchange is supported natively, there's nothing to do.. - if ( supports_onhashchange ) { return false; } - - // Otherwise, we need to stop ours (if possible). - $( fake_onhashchange.stop ); - } - - }); - - // fake_onhashchange does all the work of triggering the window.onhashchange - // event for browsers that don't natively support it, including creating a - // polling loop to watch for hash changes and in IE 6/7 creating a hidden - // Iframe to enable back and forward. - fake_onhashchange = (function(){ - var self = {}, - timeout_id, - - // Remember the initial hash so it doesn't get triggered immediately. - last_hash = get_fragment(), - - fn_retval = function(val){ return val; }, - history_set = fn_retval, - history_get = fn_retval; - - // Start the polling loop. - self.start = function() { - timeout_id || poll(); - }; - - // Stop the polling loop. - self.stop = function() { - timeout_id && clearTimeout( timeout_id ); - timeout_id = undefined; - }; - - // This polling loop checks every $.fn.hashchange.delay milliseconds to see - // if location.hash has changed, and triggers the 'hashchange' event on - // window when necessary. - function poll() { - var hash = get_fragment(), - history_hash = history_get( last_hash ); - - if ( hash !== last_hash ) { - history_set( last_hash = hash, history_hash ); - - $(window).trigger( str_hashchange ); - - } else if ( history_hash !== last_hash ) { - location.href = location.href.replace( /#.*/, '' ) + history_hash; - } - - timeout_id = setTimeout( poll, $.fn[ str_hashchange ].delay ); - }; - - // vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv - // vvvvvvvvvvvvvvvvvvv REMOVE IF NOT SUPPORTING IE6/7/8 vvvvvvvvvvvvvvvvvvv - // vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv - $.browser.msie && !supports_onhashchange && (function(){ - // Not only do IE6/7 need the "magical" Iframe treatment, but so does IE8 - // when running in "IE7 compatibility" mode. - - var iframe, - iframe_src; - - // When the event is bound and polling starts in IE 6/7, create a hidden - // Iframe for history handling. - self.start = function(){ - if ( !iframe ) { - iframe_src = $.fn[ str_hashchange ].src; - iframe_src = iframe_src && iframe_src + get_fragment(); - - // Create hidden Iframe. Attempt to make Iframe as hidden as possible - // by using techniques from http://www.paciellogroup.com/blog/?p=604. - iframe = $('<iframe tabindex="-1" title="empty"/>').hide() - - // When Iframe has completely loaded, initialize the history and - // start polling. - .one( 'load', function(){ - iframe_src || history_set( get_fragment() ); - poll(); - }) - - // Load Iframe src if specified, otherwise nothing. - .attr( 'src', iframe_src || 'javascript:0' ) - - // Append Iframe after the end of the body to prevent unnecessary - // initial page scrolling (yes, this works). - .insertAfter( 'body' )[0].contentWindow; - - // Whenever `document.title` changes, update the Iframe's title to - // prettify the back/next history menu entries. Since IE sometimes - // errors with "Unspecified error" the very first time this is set - // (yes, very useful) wrap this with a try/catch block. - doc.onpropertychange = function(){ - try { - if ( event.propertyName === 'title' ) { - iframe.document.title = doc.title; - } - } catch(e) {} - }; - - } - }; - - // Override the "stop" method since an IE6/7 Iframe was created. Even - // if there are no longer any bound event handlers, the polling loop - // is still necessary for back/next to work at all! - self.stop = fn_retval; - - // Get history by looking at the hidden Iframe's location.hash. - history_get = function() { - return get_fragment( iframe.location.href ); - }; - - // Set a new history item by opening and then closing the Iframe - // document, *then* setting its location.hash. If document.domain has - // been set, update that as well. - history_set = function( hash, history_hash ) { - var iframe_doc = iframe.document, - domain = $.fn[ str_hashchange ].domain; - - if ( hash !== history_hash ) { - // Update Iframe with any initial `document.title` that might be set. - iframe_doc.title = doc.title; - - // Opening the Iframe's document after it has been closed is what - // actually adds a history entry. - iframe_doc.open(); - - // Set document.domain for the Iframe document as well, if necessary. - domain && iframe_doc.write( '<script>document.domain="' + domain + '"</script>' ); - - iframe_doc.close(); - - // Update the Iframe's hash, for great justice. - iframe.location.hash = hash; - } - }; - - })(); - // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - // ^^^^^^^^^^^^^^^^^^^ REMOVE IF NOT SUPPORTING IE6/7/8 ^^^^^^^^^^^^^^^^^^^ - // ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ - - return self; - })(); - -})(jQuery,this); |