", + options: { + disabled: false, + + // callbacks + create: null + }, + _createWidget: function( options, element ) { + element = $( element || this.defaultElement || this )[ 0 ]; + this.element = $( element ); + this.uuid = uuid++; + this.eventNamespace = "." + this.widgetName + this.uuid; + this.options = $.widget.extend( {}, + this.options, + this._getCreateOptions(), + options ); + + this.bindings = $(); + this.hoverable = $(); + this.focusable = $(); + + if ( element !== this ) { + $.data( element, this.widgetFullName, this ); + this._on( true, this.element, { + remove: function( event ) { + if ( event.target === element ) { + this.destroy(); + } + } + }); + this.document = $( element.style ? + // element within the document + element.ownerDocument : + // element is window or document + element.document || element ); + this.window = $( this.document[0].defaultView || this.document[0].parentWindow ); + } + + this._create(); + this._trigger( "create", null, this._getCreateEventData() ); + this._init(); + }, + _getCreateOptions: $.noop, + _getCreateEventData: $.noop, + _create: $.noop, + _init: $.noop, + + destroy: function() { + this._destroy(); + // we can probably remove the unbind calls in 2.0 + // all event bindings should go through this._on() + this.element + .unbind( this.eventNamespace ) + .removeData( this.widgetFullName ) + // support: jquery <1.6.3 + // http://bugs.jquery.com/ticket/9413 + .removeData( $.camelCase( this.widgetFullName ) ); + this.widget() + .unbind( this.eventNamespace ) + .removeAttr( "aria-disabled" ) + .removeClass( + this.widgetFullName + "-disabled " + + "ui-state-disabled" ); + + // clean up events and states + this.bindings.unbind( this.eventNamespace ); + this.hoverable.removeClass( "ui-state-hover" ); + this.focusable.removeClass( "ui-state-focus" ); + }, + _destroy: $.noop, + + widget: function() { + return this.element; + }, + + option: function( key, value ) { + var options = key, + parts, + curOption, + i; + + if ( arguments.length === 0 ) { + // don't return a reference to the internal hash + return $.widget.extend( {}, this.options ); + } + + if ( typeof key === "string" ) { + // handle nested keys, e.g., "foo.bar" => { foo: { bar: ___ } } + options = {}; + parts = key.split( "." ); + key = parts.shift(); + if ( parts.length ) { + curOption = options[ key ] = $.widget.extend( {}, this.options[ key ] ); + for ( i = 0; i < parts.length - 1; i++ ) { + curOption[ parts[ i ] ] = curOption[ parts[ i ] ] || {}; + curOption = curOption[ parts[ i ] ]; + } + key = parts.pop(); + if ( value === undefined ) { + return curOption[ key ] === undefined ? null : curOption[ key ]; + } + curOption[ key ] = value; + } else { + if ( value === undefined ) { + return this.options[ key ] === undefined ? null : this.options[ key ]; + } + options[ key ] = value; + } + } + + this._setOptions( options ); + + return this; + }, + _setOptions: function( options ) { + var key; + + for ( key in options ) { + this._setOption( key, options[ key ] ); + } + + return this; + }, + _setOption: function( key, value ) { + this.options[ key ] = value; + + if ( key === "disabled" ) { + this.widget() + .toggleClass( this.widgetFullName + "-disabled", !!value ); + this.hoverable.removeClass( "ui-state-hover" ); + this.focusable.removeClass( "ui-state-focus" ); + } + + return this; + }, + + enable: function() { + return this._setOptions({ disabled: false }); + }, + disable: function() { + return this._setOptions({ disabled: true }); + }, + + _on: function( suppressDisabledCheck, element, handlers ) { + var delegateElement, + instance = this; + + // no suppressDisabledCheck flag, shuffle arguments + if ( typeof suppressDisabledCheck !== "boolean" ) { + handlers = element; + element = suppressDisabledCheck; + suppressDisabledCheck = false; + } + + // no element argument, shuffle and use this.element + if ( !handlers ) { + handlers = element; + element = this.element; + delegateElement = this.widget(); + } else { + // accept selectors, DOM elements + element = delegateElement = $( element ); + this.bindings = this.bindings.add( element ); + } + + $.each( handlers, function( event, handler ) { + function handlerProxy() { + // allow widgets to customize the disabled handling + // - disabled as an array instead of boolean + // - disabled class as method for disabling individual parts + if ( !suppressDisabledCheck && + ( instance.options.disabled === true || + $( this ).hasClass( "ui-state-disabled" ) ) ) { + return; + } + return ( typeof handler === "string" ? instance[ handler ] : handler ) + .apply( instance, arguments ); + } + + // copy the guid so direct unbinding works + if ( typeof handler !== "string" ) { + handlerProxy.guid = handler.guid = + handler.guid || handlerProxy.guid || $.guid++; + } + + var match = event.match( /^(\w+)\s*(.*)$/ ), + eventName = match[1] + instance.eventNamespace, + selector = match[2]; + if ( selector ) { + delegateElement.delegate( selector, eventName, handlerProxy ); + } else { + element.bind( eventName, handlerProxy ); + } + }); + }, + + _off: function( element, eventName ) { + eventName = (eventName || "").split( " " ).join( this.eventNamespace + " " ) + this.eventNamespace; + element.unbind( eventName ).undelegate( eventName ); + }, + + _delay: function( handler, delay ) { + function handlerProxy() { + return ( typeof handler === "string" ? instance[ handler ] : handler ) + .apply( instance, arguments ); + } + var instance = this; + return setTimeout( handlerProxy, delay || 0 ); + }, + + _hoverable: function( element ) { + this.hoverable = this.hoverable.add( element ); + this._on( element, { + mouseenter: function( event ) { + $( event.currentTarget ).addClass( "ui-state-hover" ); + }, + mouseleave: function( event ) { + $( event.currentTarget ).removeClass( "ui-state-hover" ); + } + }); + }, + + _focusable: function( element ) { + this.focusable = this.focusable.add( element ); + this._on( element, { + focusin: function( event ) { + $( event.currentTarget ).addClass( "ui-state-focus" ); + }, + focusout: function( event ) { + $( event.currentTarget ).removeClass( "ui-state-focus" ); + } + }); + }, + + _trigger: function( type, event, data ) { + var prop, orig, + callback = this.options[ type ]; + + data = data || {}; + event = $.Event( event ); + event.type = ( type === this.widgetEventPrefix ? + type : + this.widgetEventPrefix + type ).toLowerCase(); + // the original event may come from any element + // so we need to reset the target on the new event + event.target = this.element[ 0 ]; + + // copy original event properties over to the new event + orig = event.originalEvent; + if ( orig ) { + for ( prop in orig ) { + if ( !( prop in event ) ) { + event[ prop ] = orig[ prop ]; + } + } + } + + this.element.trigger( event, data ); + return !( $.isFunction( callback ) && + callback.apply( this.element[0], [ event ].concat( data ) ) === false || + event.isDefaultPrevented() ); + } +}; + +$.each( { show: "fadeIn", hide: "fadeOut" }, function( method, defaultEffect ) { + $.Widget.prototype[ "_" + method ] = function( element, options, callback ) { + if ( typeof options === "string" ) { + options = { effect: options }; + } + var hasOptions, + effectName = !options ? + method : + options === true || typeof options === "number" ? + defaultEffect : + options.effect || defaultEffect; + options = options || {}; + if ( typeof options === "number" ) { + options = { duration: options }; + } + hasOptions = !$.isEmptyObject( options ); + options.complete = callback; + if ( options.delay ) { + element.delay( options.delay ); + } + if ( hasOptions && $.effects && $.effects.effect[ effectName ] ) { + element[ method ]( options ); + } else if ( effectName !== method && element[ effectName ] ) { + element[ effectName ]( options.duration, options.easing, callback ); + } else { + element.queue(function( next ) { + $( this )[ method ](); + if ( callback ) { + callback.call( element[ 0 ] ); + } + next(); + }); + } + }; +}); + +})( jQuery ); + +(function( $, window, undefined ) { + var nsNormalizeDict = {}, + oldFind = $.find, + rbrace = /(?:\{[\s\S]*\}|\[[\s\S]*\])$/, + jqmDataRE = /:jqmData\(([^)]*)\)/g; + + $.extend( $.mobile, { + + // Namespace used framework-wide for data-attrs. Default is no namespace + + ns: "", + + // Retrieve an attribute from an element and perform some massaging of the value + + getAttribute: function( element, key ) { + var data; + + element = element.jquery ? element[0] : element; + + if ( element && element.getAttribute ) { + data = element.getAttribute( "data-" + $.mobile.ns + key ); + } + + // Copied from core's src/data.js:dataAttr() + // Convert from a string to a proper data type + try { + data = data === "true" ? true : + data === "false" ? false : + data === "null" ? null : + // Only convert to a number if it doesn't change the string + +data + "" === data ? +data : + rbrace.test( data ) ? JSON.parse( data ) : + data; + } catch( err ) {} + + return data; + }, + + // Expose our cache for testing purposes. + nsNormalizeDict: nsNormalizeDict, + + // Take a data attribute property, prepend the namespace + // and then camel case the attribute string. Add the result + // to our nsNormalizeDict so we don't have to do this again. + nsNormalize: function( prop ) { + return nsNormalizeDict[ prop ] || + ( nsNormalizeDict[ prop ] = $.camelCase( $.mobile.ns + prop ) ); + }, + + // Find the closest javascript page element to gather settings data jsperf test + // http://jsperf.com/single-complex-selector-vs-many-complex-selectors/edit + // possibly naive, but it shows that the parsing overhead for *just* the page selector vs + // the page and dialog selector is negligable. This could probably be speed up by + // doing a similar parent node traversal to the one found in the inherited theme code above + closestPageData: function( $target ) { + return $target + .closest( ":jqmData(role='page'), :jqmData(role='dialog')" ) + .data( "mobile-page" ); + } + + }); + + // Mobile version of data and removeData and hasData methods + // ensures all data is set and retrieved using jQuery Mobile's data namespace + $.fn.jqmData = function( prop, value ) { + var result; + if ( typeof prop !== "undefined" ) { + if ( prop ) { + prop = $.mobile.nsNormalize( prop ); + } + + // undefined is permitted as an explicit input for the second param + // in this case it returns the value and does not set it to undefined + if ( arguments.length < 2 || value === undefined ) { + result = this.data( prop ); + } else { + result = this.data( prop, value ); + } + } + return result; + }; + + $.jqmData = function( elem, prop, value ) { + var result; + if ( typeof prop !== "undefined" ) { + result = $.data( elem, prop ? $.mobile.nsNormalize( prop ) : prop, value ); + } + return result; + }; + + $.fn.jqmRemoveData = function( prop ) { + return this.removeData( $.mobile.nsNormalize( prop ) ); + }; + + $.jqmRemoveData = function( elem, prop ) { + return $.removeData( elem, $.mobile.nsNormalize( prop ) ); + }; + + $.find = function( selector, context, ret, extra ) { + if ( selector.indexOf( ":jqmData" ) > -1 ) { + selector = selector.replace( jqmDataRE, "[data-" + ( $.mobile.ns || "" ) + "$1]" ); + } + + return oldFind.call( this, selector, context, ret, extra ); + }; + + $.extend( $.find, oldFind ); + +})( jQuery, this ); + +(function( $, undefined ) { + +var rcapitals = /[A-Z]/g, + replaceFunction = function( c ) { + return "-" + c.toLowerCase(); + }; + +$.extend( $.Widget.prototype, { + _getCreateOptions: function() { + var option, value, + elem = this.element[ 0 ], + options = {}; + + // + if ( !$.mobile.getAttribute( elem, "defaults" ) ) { + for ( option in this.options ) { + value = $.mobile.getAttribute( elem, option.replace( rcapitals, replaceFunction ) ); + + if ( value != null ) { + options[ option ] = value; + } + } + } + + return options; + } +}); + +//TODO: Remove in 1.5 for backcompat only +$.mobile.widget = $.Widget; + +})( jQuery ); + + +(function( $ ) { + // TODO move loader class down into the widget settings + var loaderClass = "ui-loader", $html = $( "html" ); + + $.widget( "mobile.loader", { + // NOTE if the global config settings are defined they will override these + // options + options: { + // the theme for the loading message + theme: "a", + + // whether the text in the loading message is shown + textVisible: false, + + // custom html for the inner content of the loading message + html: "", + + // the text to be displayed when the popup is shown + text: "loading" + }, + + defaultHtml: "", + + // For non-fixed supportin browsers. Position at y center (if scrollTop supported), above the activeBtn (if defined), or just 100px from top + fakeFixLoader: function() { + var activeBtn = $( "." + $.mobile.activeBtnClass ).first(); + + this.element + .css({ + top: $.support.scrollTop && this.window.scrollTop() + this.window.height() / 2 || + activeBtn.length && activeBtn.offset().top || 100 + }); + }, + + // check position of loader to see if it appears to be "fixed" to center + // if not, use abs positioning + checkLoaderPosition: function() { + var offset = this.element.offset(), + scrollTop = this.window.scrollTop(), + screenHeight = $.mobile.getScreenHeight(); + + if ( offset.top < scrollTop || ( offset.top - scrollTop ) > screenHeight ) { + this.element.addClass( "ui-loader-fakefix" ); + this.fakeFixLoader(); + this.window + .unbind( "scroll", this.checkLoaderPosition ) + .bind( "scroll", $.proxy( this.fakeFixLoader, this ) ); + } + }, + + resetHtml: function() { + this.element.html( $( this.defaultHtml ).html() ); + }, + + // Turn on/off page loading message. Theme doubles as an object argument + // with the following shape: { theme: '', text: '', html: '', textVisible: '' } + // NOTE that the $.mobile.loading* settings and params past the first are deprecated + // TODO sweet jesus we need to break some of this out + show: function( theme, msgText, textonly ) { + var textVisible, message, loadSettings; + + this.resetHtml(); + + // use the prototype options so that people can set them globally at + // mobile init. Consistency, it's what's for dinner + if ( $.type( theme ) === "object" ) { + loadSettings = $.extend( {}, this.options, theme ); + + theme = loadSettings.theme; + } else { + loadSettings = this.options; + + // here we prefer the theme value passed as a string argument, then + // we prefer the global option because we can't use undefined default + // prototype options, then the prototype option + theme = theme || loadSettings.theme; + } + + // set the message text, prefer the param, then the settings object + // then loading message + message = msgText || ( loadSettings.text === false ? "" : loadSettings.text ); + + // prepare the dom + $html.addClass( "ui-loading" ); + + textVisible = loadSettings.textVisible; + + // add the proper css given the options (theme, text, etc) + // Force text visibility if the second argument was supplied, or + // if the text was explicitly set in the object args + this.element.attr("class", loaderClass + + " ui-corner-all ui-body-" + theme + + " ui-loader-" + ( textVisible || msgText || theme.text ? "verbose" : "default" ) + + ( loadSettings.textonly || textonly ? " ui-loader-textonly" : "" ) ); + + // TODO verify that jquery.fn.html is ok to use in both cases here + // this might be overly defensive in preventing unknowing xss + // if the html attribute is defined on the loading settings, use that + // otherwise use the fallbacks from above + if ( loadSettings.html ) { + this.element.html( loadSettings.html ); + } else { + this.element.find( "h1" ).text( message ); + } + + // If the pagecontainer widget has been defined we may use the :mobile-pagecontainer + // and attach to the element on which the pagecontainer widget has been defined. If not, + // we attach to the body. + this.element.appendTo( $.mobile.pagecontainer ? + $( ":mobile-pagecontainer" ) : $( "body" ) ); + + // check that the loader is visible + this.checkLoaderPosition(); + + // on scroll check the loader position + this.window.bind( "scroll", $.proxy( this.checkLoaderPosition, this ) ); + }, + + hide: function() { + $html.removeClass( "ui-loading" ); + + if ( this.options.text ) { + this.element.removeClass( "ui-loader-fakefix" ); + } + + this.window.unbind( "scroll", this.fakeFixLoader ); + this.window.unbind( "scroll", this.checkLoaderPosition ); + } + }); + +})(jQuery, this); + + +/*! + * 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 +// $(window).hashchange() like jQuery provides for built-in events. +// Renamed jQuery.hashchangeDelay to and +// lowered its default value to 50. Added +// and properties plus document-domain.html +// file to address access denied issues when setting document.domain in +// IE6/7. +// 1.2 - (2/11/2010) Fixed a bug where coming back to a page using this plugin +// from a page on another domain would cause an error in Safari 4. Also, +// IE6/7 Iframe is now inserted after the body (this actually works), +// which prevents the page from scrolling when the event is first bound. +// Event can also now be bound before DOM ready, but it won't be usable +// before then in IE6/7. +// 1.1 - (1/21/2010) Incorporated document.documentMode test to fix IE8 bug +// where browser version is incorrectly reported as 8.0, despite +// inclusion of the X-UA-Compatible IE=EmulateIE7 meta tag. +// 1.0 - (1/9/2010) Initial Release. Broke out the jQuery BBQ event.special +// window.onhashchange functionality into a separate plugin for users +// who want just the basic event & back button support, without all the +// extra awesomeness that BBQ provides. This plugin will be included as +// part of jQuery BBQ, but also be available separately. + +(function($,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 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 + // 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 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 ), 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 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 : + // + // > // 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 + window.attachEvent && !window.addEventListener && !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 = $('