1379 lines
52 KiB
JavaScript
1379 lines
52 KiB
JavaScript
/*!
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* jQuery BBQ: Back Button & Query Library - v1.4pre - 1/15/2013
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* http://benalman.com/projects/jquery-bbq-plugin/
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*
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* Copyright (c) 2010-2013 "Cowboy" Ben Alman
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* Dual licensed under the MIT and GPL licenses.
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* http://benalman.com/about/license/
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*/
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// Script: jQuery BBQ: Back Button & Query Library
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//
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// *Version: 1.4pre, Last updated: 1/15/2013*
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//
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// Project Home - http://benalman.com/projects/jquery-bbq-plugin/
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// GitHub - http://github.com/cowboy/jquery-bbq/
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// Source - http://github.com/cowboy/jquery-bbq/raw/master/jquery.ba-bbq.js
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// (Minified) - http://github.com/cowboy/jquery-bbq/raw/master/jquery.ba-bbq.min.js (2.2kb gzipped)
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//
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// About: License
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//
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// Copyright (c) 2010-2013 "Cowboy" Ben Alman,
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// Dual licensed under the MIT and GPL licenses.
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// http://benalman.com/about/license/
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//
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// About: Examples
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//
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// These working examples, complete with fully commented code, illustrate a few
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// ways in which this plugin can be used.
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//
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// Basic AJAX - http://benalman.com/code/projects/jquery-bbq/examples/fragment-basic/
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// Advanced AJAX - http://benalman.com/code/projects/jquery-bbq/examples/fragment-advanced/
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// jQuery UI Tabs - http://benalman.com/code/projects/jquery-bbq/examples/fragment-jquery-ui-tabs/
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// Deparam - http://benalman.com/code/projects/jquery-bbq/examples/deparam/
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//
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// About: Support and Testing
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//
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// Information about what version or versions of jQuery this plugin has been
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// tested with, what browsers it has been tested in, and where the unit tests
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// reside (so you can test it yourself).
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//
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// jQuery Versions - 1.2.6, 1.3.2, 1.4.1, 1.4.2
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// Browsers Tested - Internet Explorer 6-8, Firefox 2-4, Chrome 5-6, Safari 3.2-5,
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// Opera 9.6-10.60, iPhone 3.1, Android 1.6-2.2, BlackBerry 4.6-5.
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// Unit Tests - http://benalman.com/code/projects/jquery-bbq/unit/
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//
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// About: Release History
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//
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// 1.4pre - (1/15/2013) Removed $.browser reference to work with jQuery 1.9
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// 1.3pre - (8/26/2010) Integrated <jQuery hashchange event> v1.3, which adds
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// document.title and document.domain support in IE6/7, BlackBerry
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// support, better Iframe hiding for accessibility reasons, and the new
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// <jQuery.fn.hashchange> "shortcut" method. Added the
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// <jQuery.param.sorted> method which reduces the possibility of
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// extraneous hashchange event triggering. Added the
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// <jQuery.param.fragment.ajaxCrawlable> method which can be used to
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// enable Google "AJAX Crawlable mode."
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// 1.2.1 - (2/17/2010) Actually fixed the stale window.location Safari bug from
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// <jQuery hashchange event> in BBQ, which was the main reason for the
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// previous release!
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// 1.2 - (2/16/2010) Integrated <jQuery hashchange event> v1.2, which fixes a
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// Safari bug, the event can now be bound before DOM ready, and IE6/7
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// page should no longer scroll when the event is first bound. Also
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// added the <jQuery.param.fragment.noEscape> method, and reworked the
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// <hashchange event (BBQ)> internal "add" method to be compatible with
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// changes made to the jQuery 1.4.2 special events API.
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// 1.1.1 - (1/22/2010) Integrated <jQuery hashchange event> v1.1, which fixes an
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// obscure IE8 EmulateIE7 meta tag compatibility mode bug.
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// 1.1 - (1/9/2010) Broke out the jQuery BBQ event.special <hashchange event>
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// functionality into a separate plugin for users who want just the
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// basic event & back button support, without all the extra awesomeness
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// that BBQ provides. This plugin will be included as part of jQuery BBQ,
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// but also be available separately. See <jQuery hashchange event>
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// plugin for more information. Also added the <jQuery.bbq.removeState>
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// method and added additional <jQuery.deparam> examples.
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// 1.0.3 - (12/2/2009) Fixed an issue in IE 6 where location.search and
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// location.hash would report incorrectly if the hash contained the ?
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// character. Also <jQuery.param.querystring> and <jQuery.param.fragment>
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// will no longer parse params out of a URL that doesn't contain ? or #,
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// respectively.
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// 1.0.2 - (10/10/2009) Fixed an issue in IE 6/7 where the hidden IFRAME caused
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// a "This page contains both secure and nonsecure items." warning when
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// used on an https:// page.
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// 1.0.1 - (10/7/2009) Fixed an issue in IE 8. Since both "IE7" and "IE8
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// Compatibility View" modes erroneously report that the browser
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// supports the native window.onhashchange event, a slightly more
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// robust test needed to be added.
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// 1.0 - (10/2/2009) Initial release
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(function($,window){
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'$:nomunge'; // Used by YUI compressor.
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// Some convenient shortcuts.
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var undefined,
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aps = Array.prototype.slice,
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decode = decodeURIComponent,
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// Method / object references.
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jq_param = $.param,
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jq_param_sorted,
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jq_param_fragment,
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jq_deparam,
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jq_deparam_fragment,
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jq_bbq = $.bbq = $.bbq || {},
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jq_bbq_pushState,
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jq_bbq_getState,
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jq_elemUrlAttr,
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special = $.event.special,
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// Reused strings.
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str_hashchange = 'hashchange',
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str_querystring = 'querystring',
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str_fragment = 'fragment',
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str_elemUrlAttr = 'elemUrlAttr',
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str_href = 'href',
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str_src = 'src',
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// Reused RegExp.
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re_params_querystring = /^.*\?|#.*$/g,
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re_params_fragment,
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re_fragment,
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re_no_escape,
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ajax_crawlable,
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fragment_prefix,
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// Used by jQuery.elemUrlAttr.
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elemUrlAttr_cache = {};
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// A few commonly used bits, broken out to help reduce minified file size.
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function is_string( arg ) {
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return typeof arg === 'string';
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};
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// Why write the same function twice? Let's curry! Mmmm, curry..
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function curry( func ) {
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var args = aps.call( arguments, 1 );
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return function() {
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return func.apply( this, args.concat( aps.call( arguments ) ) );
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};
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};
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// Get location.hash (or what you'd expect location.hash to be) sans any
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// leading #. Thanks for making this necessary, Firefox!
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function get_fragment( url ) {
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return url.replace( re_fragment, '$2' );
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};
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// Get location.search (or what you'd expect location.search to be) sans any
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// leading #. Thanks for making this necessary, IE6!
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function get_querystring( url ) {
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return url.replace( /(?:^[^?#]*\?([^#]*).*$)?.*/, '$1' );
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};
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// Section: Param (to string)
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//
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// Method: jQuery.param.querystring
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//
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// Retrieve the query string from a URL or if no arguments are passed, the
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// current window.location.href.
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//
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// Usage:
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//
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// > jQuery.param.querystring( [ url ] );
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//
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// Arguments:
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//
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// url - (String) A URL containing query string params to be parsed. If url
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// is not passed, the current window.location.href is used.
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//
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// Returns:
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//
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// (String) The parsed query string, with any leading "?" removed.
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//
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// Method: jQuery.param.querystring (build url)
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//
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// Merge a URL, with or without pre-existing query string params, plus any
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// object, params string or URL containing query string params into a new URL.
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//
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// Usage:
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//
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// > jQuery.param.querystring( url, params [, merge_mode ] );
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//
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// Arguments:
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//
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// url - (String) A valid URL for params to be merged into. This URL may
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// contain a query string and/or fragment (hash).
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// params - (String) A params string or URL containing query string params to
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// be merged into url.
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// params - (Object) A params object to be merged into url.
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// merge_mode - (Number) Merge behavior defaults to 0 if merge_mode is not
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// specified, and is as-follows:
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//
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// * 0: params in the params argument will override any query string
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// params in url.
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// * 1: any query string params in url will override params in the params
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// argument.
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// * 2: params argument will completely replace any query string in url.
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//
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// Returns:
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//
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// (String) A URL with a urlencoded query string in the format '?a=b&c=d&e=f'.
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// Method: jQuery.param.fragment
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//
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// Retrieve the fragment (hash) from a URL or if no arguments are passed, the
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// current window.location.href.
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//
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// Usage:
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//
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// > jQuery.param.fragment( [ url ] );
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//
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// Arguments:
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//
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// url - (String) A URL containing fragment (hash) params to be parsed. If
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// url is not passed, the current window.location.href is used.
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//
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// Returns:
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//
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// (String) The parsed fragment (hash) string, with any leading "#" removed.
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// Method: jQuery.param.fragment (build url)
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//
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// Merge a URL, with or without pre-existing fragment (hash) params, plus any
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// object, params string or URL containing fragment (hash) params into a new
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// URL.
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//
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// Usage:
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//
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// > jQuery.param.fragment( url, params [, merge_mode ] );
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//
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// Arguments:
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//
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// url - (String) A valid URL for params to be merged into. This URL may
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// contain a query string and/or fragment (hash).
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// params - (String) A params string or URL containing fragment (hash) params
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// to be merged into url.
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// params - (Object) A params object to be merged into url.
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// merge_mode - (Number) Merge behavior defaults to 0 if merge_mode is not
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// specified, and is as-follows:
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//
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// * 0: params in the params argument will override any fragment (hash)
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// params in url.
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// * 1: any fragment (hash) params in url will override params in the
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// params argument.
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// * 2: params argument will completely replace any query string in url.
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//
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// Returns:
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//
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// (String) A URL with a urlencoded fragment (hash) in the format '#a=b&c=d&e=f'.
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function jq_param_sub( is_fragment, get_func, url, params, merge_mode ) {
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var result,
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qs,
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matches,
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url_params,
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hash;
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if ( params !== undefined ) {
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// Build URL by merging params into url string.
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// matches[1] = url part that precedes params, not including trailing ?/#
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// matches[2] = params, not including leading ?/#
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// matches[3] = if in 'querystring' mode, hash including leading #, otherwise ''
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matches = url.match( is_fragment ? re_fragment : /^([^#?]*)\??([^#]*)(#?.*)/ );
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// Get the hash if in 'querystring' mode, and it exists.
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hash = matches[3] || '';
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if ( merge_mode === 2 && is_string( params ) ) {
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// If merge_mode is 2 and params is a string, merge the fragment / query
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// string into the URL wholesale, without converting it into an object.
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qs = params.replace( is_fragment ? re_params_fragment : re_params_querystring, '' );
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} else {
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// Convert relevant params in url to object.
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url_params = jq_deparam( matches[2] );
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params = is_string( params )
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// Convert passed params string into object.
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? jq_deparam[ is_fragment ? str_fragment : str_querystring ]( params )
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// Passed params object.
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: params;
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qs = merge_mode === 2 ? params // passed params replace url params
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: merge_mode === 1 ? $.extend( {}, params, url_params ) // url params override passed params
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: $.extend( {}, url_params, params ); // passed params override url params
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// Convert params object into a sorted params string.
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qs = jq_param_sorted( qs );
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// Unescape characters specified via $.param.noEscape. Since only hash-
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// history users have requested this feature, it's only enabled for
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// fragment-related params strings.
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if ( is_fragment ) {
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qs = qs.replace( re_no_escape, decode );
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}
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}
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// Build URL from the base url, querystring and hash. In 'querystring'
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// mode, ? is only added if a query string exists. In 'fragment' mode, #
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// is always added.
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result = matches[1] + ( is_fragment ? fragment_prefix : qs || !matches[1] ? '?' : '' ) + qs + hash;
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} else {
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// If URL was passed in, parse params from URL string, otherwise parse
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// params from window.location.href.
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result = get_func( url !== undefined ? url : location.href );
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}
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return result;
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};
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jq_param[ str_querystring ] = curry( jq_param_sub, 0, get_querystring );
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jq_param[ str_fragment ] = jq_param_fragment = curry( jq_param_sub, 1, get_fragment );
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// Method: jQuery.param.sorted
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//
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// Returns a params string equivalent to that returned by the internal
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// jQuery.param method, but sorted, which makes it suitable for use as a
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// cache key.
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//
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// For example, in most browsers jQuery.param({z:1,a:2}) returns "z=1&a=2"
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// and jQuery.param({a:2,z:1}) returns "a=2&z=1". Even though both the
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// objects being serialized and the resulting params strings are equivalent,
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// if these params strings were set into the location.hash fragment
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// sequentially, the hashchange event would be triggered unnecessarily, since
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// the strings are different (even though the data described by them is the
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// same). By sorting the params string, unecessary hashchange event triggering
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// can be avoided.
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//
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// Usage:
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//
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// > jQuery.param.sorted( obj [, traditional ] );
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//
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// Arguments:
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//
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// obj - (Object) An object to be serialized.
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// traditional - (Boolean) Params deep/shallow serialization mode. See the
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// documentation at http://api.jquery.com/jQuery.param/ for more detail.
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//
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// Returns:
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//
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// (String) A sorted params string.
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jq_param.sorted = jq_param_sorted = function( a, traditional ) {
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var arr = [],
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obj = {};
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$.each( jq_param( a, traditional ).split( '&' ), function(i,v){
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var key = v.replace( /(?:%5B|=).*$/, '' ),
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key_obj = obj[ key ];
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if ( !key_obj ) {
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key_obj = obj[ key ] = [];
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arr.push( key );
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}
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key_obj.push( v );
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});
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return $.map( arr.sort(), function(v){
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return obj[ v ];
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}).join( '&' );
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};
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// Method: jQuery.param.fragment.noEscape
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//
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// Specify characters that will be left unescaped when fragments are created
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// or merged using <jQuery.param.fragment>, or when the fragment is modified
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// using <jQuery.bbq.pushState>. This option only applies to serialized data
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// object fragments, and not set-as-string fragments. Does not affect the
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// query string. Defaults to ",/" (comma, forward slash).
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//
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// Note that this is considered a purely aesthetic option, and will help to
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// create URLs that "look pretty" in the address bar or bookmarks, without
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// affecting functionality in any way. That being said, be careful to not
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// unescape characters that are used as delimiters or serve a special
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// purpose, such as the "#?&=+" (octothorpe, question mark, ampersand,
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// equals, plus) characters.
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//
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// Usage:
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//
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// > jQuery.param.fragment.noEscape( [ chars ] );
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//
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// Arguments:
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//
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// chars - (String) The characters to not escape in the fragment. If
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// unspecified, defaults to empty string (escape all characters).
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//
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// Returns:
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//
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// Nothing.
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jq_param_fragment.noEscape = function( chars ) {
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chars = chars || '';
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var arr = $.map( chars.split(''), encodeURIComponent );
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re_no_escape = new RegExp( arr.join('|'), 'g' );
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};
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// A sensible default. These are the characters people seem to complain about
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// "uglifying up the URL" the most.
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jq_param_fragment.noEscape( ',/' );
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// Method: jQuery.param.fragment.ajaxCrawlable
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//
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// TODO: DESCRIBE
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//
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// Usage:
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//
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// > jQuery.param.fragment.ajaxCrawlable( [ state ] );
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//
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// Arguments:
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//
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// state - (Boolean) TODO: DESCRIBE
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//
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// Returns:
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//
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// (Boolean) The current ajaxCrawlable state.
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jq_param_fragment.ajaxCrawlable = function( state ) {
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if ( state !== undefined ) {
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if ( state ) {
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re_params_fragment = /^.*(?:#!|#)/;
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re_fragment = /^([^#]*)(?:#!|#)?(.*)$/;
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fragment_prefix = '#!';
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} else {
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re_params_fragment = /^.*#/;
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re_fragment = /^([^#]*)#?(.*)$/;
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fragment_prefix = '#';
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}
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ajax_crawlable = !!state;
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}
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return ajax_crawlable;
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};
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jq_param_fragment.ajaxCrawlable( 0 );
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// Section: Deparam (from string)
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//
|
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// Method: jQuery.deparam
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//
|
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// Deserialize a params string into an object, optionally coercing numbers,
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// booleans, null and undefined values; this method is the counterpart to the
|
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// internal jQuery.param method.
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//
|
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// Usage:
|
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//
|
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// > jQuery.deparam( params [, coerce ] );
|
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//
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// Arguments:
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//
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// params - (String) A params string to be parsed.
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// coerce - (Boolean) If true, coerces any numbers or true, false, null, and
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// undefined to their actual value. Defaults to false if omitted.
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//
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// Returns:
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//
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// (Object) An object representing the deserialized params string.
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$.deparam = jq_deparam = function( params, coerce ) {
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var obj = {},
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coerce_types = { 'true': !0, 'false': !1, 'null': null };
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|
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// Iterate over all name=value pairs.
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$.each( params.replace( /\+/g, ' ' ).split( '&' ), function(j,v){
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var param = v.split( '=' ),
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key = decode( param[0] ),
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val,
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cur = obj,
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i = 0,
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// If key is more complex than 'foo', like 'a[]' or 'a[b][c]', split it
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// into its component parts.
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keys = key.split( '][' ),
|
|
keys_last = keys.length - 1;
|
|
|
|
// If the first keys part contains [ and the last ends with ], then []
|
|
// are correctly balanced.
|
|
if ( /\[/.test( keys[0] ) && /\]$/.test( keys[ keys_last ] ) ) {
|
|
// Remove the trailing ] from the last keys part.
|
|
keys[ keys_last ] = keys[ keys_last ].replace( /\]$/, '' );
|
|
|
|
// Split first keys part into two parts on the [ and add them back onto
|
|
// the beginning of the keys array.
|
|
keys = keys.shift().split('[').concat( keys );
|
|
|
|
keys_last = keys.length - 1;
|
|
} else {
|
|
// Basic 'foo' style key.
|
|
keys_last = 0;
|
|
}
|
|
|
|
// Are we dealing with a name=value pair, or just a name?
|
|
if ( param.length === 2 ) {
|
|
val = decode( param[1] );
|
|
|
|
// Coerce values.
|
|
if ( coerce ) {
|
|
val = val && !isNaN(val) ? +val // number
|
|
: val === 'undefined' ? undefined // undefined
|
|
: coerce_types[val] !== undefined ? coerce_types[val] // true, false, null
|
|
: val; // string
|
|
}
|
|
|
|
if ( keys_last ) {
|
|
// Complex key, build deep object structure based on a few rules:
|
|
// * The 'cur' pointer starts at the object top-level.
|
|
// * [] = array push (n is set to array length), [n] = array if n is
|
|
// numeric, otherwise object.
|
|
// * If at the last keys part, set the value.
|
|
// * For each keys part, if the current level is undefined create an
|
|
// object or array based on the type of the next keys part.
|
|
// * Move the 'cur' pointer to the next level.
|
|
// * Rinse & repeat.
|
|
for ( ; i <= keys_last; i++ ) {
|
|
key = keys[i] === '' ? cur.length : keys[i];
|
|
cur = cur[key] = i < keys_last
|
|
? cur[key] || ( keys[i+1] && isNaN( keys[i+1] ) ? {} : [] )
|
|
: val;
|
|
}
|
|
|
|
} else {
|
|
// Simple key, even simpler rules, since only scalars and shallow
|
|
// arrays are allowed.
|
|
|
|
if ( $.isArray( obj[key] ) ) {
|
|
// val is already an array, so push on the next value.
|
|
obj[key].push( val );
|
|
|
|
} else if ( obj[key] !== undefined ) {
|
|
// val isn't an array, but since a second value has been specified,
|
|
// convert val into an array.
|
|
obj[key] = [ obj[key], val ];
|
|
|
|
} else {
|
|
// val is a scalar.
|
|
obj[key] = val;
|
|
}
|
|
}
|
|
|
|
} else if ( key ) {
|
|
// No value was defined, so set something meaningful.
|
|
obj[key] = coerce
|
|
? undefined
|
|
: '';
|
|
}
|
|
});
|
|
|
|
return obj;
|
|
};
|
|
|
|
// Method: jQuery.deparam.querystring
|
|
//
|
|
// Parse the query string from a URL or the current window.location.href,
|
|
// deserializing it into an object, optionally coercing numbers, booleans,
|
|
// null and undefined values.
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery.deparam.querystring( [ url ] [, coerce ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// url - (String) An optional params string or URL containing query string
|
|
// params to be parsed. If url is omitted, the current
|
|
// window.location.href is used.
|
|
// coerce - (Boolean) If true, coerces any numbers or true, false, null, and
|
|
// undefined to their actual value. Defaults to false if omitted.
|
|
//
|
|
// Returns:
|
|
//
|
|
// (Object) An object representing the deserialized params string.
|
|
|
|
// Method: jQuery.deparam.fragment
|
|
//
|
|
// Parse the fragment (hash) from a URL or the current window.location.href,
|
|
// deserializing it into an object, optionally coercing numbers, booleans,
|
|
// null and undefined values.
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery.deparam.fragment( [ url ] [, coerce ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// url - (String) An optional params string or URL containing fragment (hash)
|
|
// params to be parsed. If url is omitted, the current window.location.href
|
|
// is used.
|
|
// coerce - (Boolean) If true, coerces any numbers or true, false, null, and
|
|
// undefined to their actual value. Defaults to false if omitted.
|
|
//
|
|
// Returns:
|
|
//
|
|
// (Object) An object representing the deserialized params string.
|
|
|
|
function jq_deparam_sub( is_fragment, url_or_params, coerce ) {
|
|
if ( url_or_params === undefined || typeof url_or_params === 'boolean' ) {
|
|
// url_or_params not specified.
|
|
coerce = url_or_params;
|
|
url_or_params = jq_param[ is_fragment ? str_fragment : str_querystring ]();
|
|
} else {
|
|
url_or_params = is_string( url_or_params )
|
|
? url_or_params.replace( is_fragment ? re_params_fragment : re_params_querystring, '' )
|
|
: url_or_params;
|
|
}
|
|
|
|
return jq_deparam( url_or_params, coerce );
|
|
};
|
|
|
|
jq_deparam[ str_querystring ] = curry( jq_deparam_sub, 0 );
|
|
jq_deparam[ str_fragment ] = jq_deparam_fragment = curry( jq_deparam_sub, 1 );
|
|
|
|
// Section: Element manipulation
|
|
//
|
|
// Method: jQuery.elemUrlAttr
|
|
//
|
|
// Get the internal "Default URL attribute per tag" list, or augment the list
|
|
// with additional tag-attribute pairs, in case the defaults are insufficient.
|
|
//
|
|
// In the <jQuery.fn.querystring> and <jQuery.fn.fragment> methods, this list
|
|
// is used to determine which attribute contains the URL to be modified, if
|
|
// an "attr" param is not specified.
|
|
//
|
|
// Default Tag-Attribute List:
|
|
//
|
|
// a - href
|
|
// base - href
|
|
// iframe - src
|
|
// img - src
|
|
// input - src
|
|
// form - action
|
|
// link - href
|
|
// script - src
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery.elemUrlAttr( [ tag_attr ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// tag_attr - (Object) An object containing a list of tag names and their
|
|
// associated default attribute names in the format { tag: 'attr', ... } to
|
|
// be merged into the internal tag-attribute list.
|
|
//
|
|
// Returns:
|
|
//
|
|
// (Object) An object containing all stored tag-attribute values.
|
|
|
|
// Only define function and set defaults if function doesn't already exist, as
|
|
// the urlInternal plugin will provide this method as well.
|
|
$[ str_elemUrlAttr ] || ($[ str_elemUrlAttr ] = function( obj ) {
|
|
return $.extend( elemUrlAttr_cache, obj );
|
|
})({
|
|
a: str_href,
|
|
base: str_href,
|
|
iframe: str_src,
|
|
img: str_src,
|
|
input: str_src,
|
|
form: 'action',
|
|
link: str_href,
|
|
script: str_src
|
|
});
|
|
|
|
jq_elemUrlAttr = $[ str_elemUrlAttr ];
|
|
|
|
// Method: jQuery.fn.querystring
|
|
//
|
|
// Update URL attribute in one or more elements, merging the current URL (with
|
|
// or without pre-existing query string params) plus any params object or
|
|
// string into a new URL, which is then set into that attribute. Like
|
|
// <jQuery.param.querystring (build url)>, but for all elements in a jQuery
|
|
// collection.
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery('selector').querystring( [ attr, ] params [, merge_mode ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// attr - (String) Optional name of an attribute that will contain a URL to
|
|
// merge params or url into. See <jQuery.elemUrlAttr> for a list of default
|
|
// attributes.
|
|
// params - (Object) A params object to be merged into the URL attribute.
|
|
// params - (String) A URL containing query string params, or params string
|
|
// to be merged into the URL attribute.
|
|
// merge_mode - (Number) Merge behavior defaults to 0 if merge_mode is not
|
|
// specified, and is as-follows:
|
|
//
|
|
// * 0: params in the params argument will override any params in attr URL.
|
|
// * 1: any params in attr URL will override params in the params argument.
|
|
// * 2: params argument will completely replace any query string in attr
|
|
// URL.
|
|
//
|
|
// Returns:
|
|
//
|
|
// (jQuery) The initial jQuery collection of elements, but with modified URL
|
|
// attribute values.
|
|
|
|
// Method: jQuery.fn.fragment
|
|
//
|
|
// Update URL attribute in one or more elements, merging the current URL (with
|
|
// or without pre-existing fragment/hash params) plus any params object or
|
|
// string into a new URL, which is then set into that attribute. Like
|
|
// <jQuery.param.fragment (build url)>, but for all elements in a jQuery
|
|
// collection.
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery('selector').fragment( [ attr, ] params [, merge_mode ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// attr - (String) Optional name of an attribute that will contain a URL to
|
|
// merge params into. See <jQuery.elemUrlAttr> for a list of default
|
|
// attributes.
|
|
// params - (Object) A params object to be merged into the URL attribute.
|
|
// params - (String) A URL containing fragment (hash) params, or params
|
|
// string to be merged into the URL attribute.
|
|
// merge_mode - (Number) Merge behavior defaults to 0 if merge_mode is not
|
|
// specified, and is as-follows:
|
|
//
|
|
// * 0: params in the params argument will override any params in attr URL.
|
|
// * 1: any params in attr URL will override params in the params argument.
|
|
// * 2: params argument will completely replace any fragment (hash) in attr
|
|
// URL.
|
|
//
|
|
// Returns:
|
|
//
|
|
// (jQuery) The initial jQuery collection of elements, but with modified URL
|
|
// attribute values.
|
|
|
|
function jq_fn_sub( mode, force_attr, params, merge_mode ) {
|
|
if ( !is_string( params ) && typeof params !== 'object' ) {
|
|
// force_attr not specified.
|
|
merge_mode = params;
|
|
params = force_attr;
|
|
force_attr = undefined;
|
|
}
|
|
|
|
return this.each(function(){
|
|
var that = $(this),
|
|
|
|
// Get attribute specified, or default specified via $.elemUrlAttr.
|
|
attr = force_attr || jq_elemUrlAttr()[ ( this.nodeName || '' ).toLowerCase() ] || '',
|
|
|
|
// Get URL value.
|
|
url = attr && that.attr( attr ) || '';
|
|
|
|
// Update attribute with new URL.
|
|
that.attr( attr, jq_param[ mode ]( url, params, merge_mode ) );
|
|
});
|
|
|
|
};
|
|
|
|
$.fn[ str_querystring ] = curry( jq_fn_sub, str_querystring );
|
|
$.fn[ str_fragment ] = curry( jq_fn_sub, str_fragment );
|
|
|
|
// Section: History, hashchange event
|
|
//
|
|
// Method: jQuery.bbq.pushState
|
|
//
|
|
// Adds a 'state' into the browser history at the current position, setting
|
|
// location.hash and triggering any bound <hashchange event> callbacks
|
|
// (provided the new state is different than the previous state).
|
|
//
|
|
// If no arguments are passed, an empty state is created, which is just a
|
|
// shortcut for jQuery.bbq.pushState( {}, 2 ).
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery.bbq.pushState( [ params [, merge_mode ] ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// params - (String) A serialized params string or a hash string beginning
|
|
// with # to merge into location.hash.
|
|
// params - (Object) A params object to merge into location.hash.
|
|
// merge_mode - (Number) Merge behavior defaults to 0 if merge_mode is not
|
|
// specified (unless a hash string beginning with # is specified, in which
|
|
// case merge behavior defaults to 2), and is as-follows:
|
|
//
|
|
// * 0: params in the params argument will override any params in the
|
|
// current state.
|
|
// * 1: any params in the current state will override params in the params
|
|
// argument.
|
|
// * 2: params argument will completely replace current state.
|
|
//
|
|
// Returns:
|
|
//
|
|
// Nothing.
|
|
//
|
|
// Additional Notes:
|
|
//
|
|
// * Setting an empty state may cause the browser to scroll.
|
|
// * Unlike the fragment and querystring methods, if a hash string beginning
|
|
// with # is specified as the params agrument, merge_mode defaults to 2.
|
|
|
|
jq_bbq.pushState = jq_bbq_pushState = function( params, merge_mode ) {
|
|
if ( is_string( params ) && /^#/.test( params ) && merge_mode === undefined ) {
|
|
// Params string begins with # and merge_mode not specified, so completely
|
|
// overwrite window.location.hash.
|
|
merge_mode = 2;
|
|
}
|
|
|
|
var has_args = params !== undefined,
|
|
// Merge params into window.location using $.param.fragment.
|
|
url = jq_param_fragment( location.href,
|
|
has_args ? params : {}, has_args ? merge_mode : 2 );
|
|
|
|
// Set new window.location.href. Note that Safari 3 & Chrome barf on
|
|
// location.hash = '#' so the entire URL is set.
|
|
location.href = url;
|
|
};
|
|
|
|
// Method: jQuery.bbq.getState
|
|
//
|
|
// Retrieves the current 'state' from the browser history, parsing
|
|
// location.hash for a specific key or returning an object containing the
|
|
// entire state, optionally coercing numbers, booleans, null and undefined
|
|
// values.
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery.bbq.getState( [ key ] [, coerce ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// key - (String) An optional state key for which to return a value.
|
|
// coerce - (Boolean) If true, coerces any numbers or true, false, null, and
|
|
// undefined to their actual value. Defaults to false.
|
|
//
|
|
// Returns:
|
|
//
|
|
// (Anything) If key is passed, returns the value corresponding with that key
|
|
// in the location.hash 'state', or undefined. If not, an object
|
|
// representing the entire 'state' is returned.
|
|
|
|
jq_bbq.getState = jq_bbq_getState = function( key, coerce ) {
|
|
return key === undefined || typeof key === 'boolean'
|
|
? jq_deparam_fragment( key ) // 'key' really means 'coerce' here
|
|
: jq_deparam_fragment( coerce )[ key ];
|
|
};
|
|
|
|
// Method: jQuery.bbq.removeState
|
|
//
|
|
// Remove one or more keys from the current browser history 'state', creating
|
|
// a new state, setting location.hash and triggering any bound
|
|
// <hashchange event> callbacks (provided the new state is different than
|
|
// the previous state).
|
|
//
|
|
// If no arguments are passed, an empty state is created, which is just a
|
|
// shortcut for jQuery.bbq.pushState( {}, 2 ).
|
|
//
|
|
// Usage:
|
|
//
|
|
// > jQuery.bbq.removeState( [ key [, key ... ] ] );
|
|
//
|
|
// Arguments:
|
|
//
|
|
// key - (String) One or more key values to remove from the current state,
|
|
// passed as individual arguments.
|
|
// key - (Array) A single array argument that contains a list of key values
|
|
// to remove from the current state.
|
|
//
|
|
// Returns:
|
|
//
|
|
// Nothing.
|
|
//
|
|
// Additional Notes:
|
|
//
|
|
// * Setting an empty state may cause the browser to scroll.
|
|
|
|
jq_bbq.removeState = function( arr ) {
|
|
var state = {};
|
|
|
|
// If one or more arguments is passed..
|
|
if ( arr !== undefined ) {
|
|
|
|
// Get the current state.
|
|
state = jq_bbq_getState();
|
|
|
|
// For each passed key, delete the corresponding property from the current
|
|
// state.
|
|
$.each( $.isArray( arr ) ? arr : arguments, function(i,v){
|
|
delete state[ v ];
|
|
});
|
|
}
|
|
|
|
// Set the state, completely overriding any existing state.
|
|
jq_bbq_pushState( state, 2 );
|
|
};
|
|
|
|
// Event: hashchange event (BBQ)
|
|
//
|
|
// Usage in jQuery 1.4 and newer:
|
|
//
|
|
// In jQuery 1.4 and newer, the event object passed into any hashchange event
|
|
// callback is augmented with a copy of the location.hash fragment at the time
|
|
// the event was triggered as its event.fragment property. In addition, the
|
|
// event.getState method operates on this property (instead of location.hash)
|
|
// which allows this fragment-as-a-state to be referenced later, even after
|
|
// window.location may have changed.
|
|
//
|
|
// Note that event.fragment and event.getState are not defined according to
|
|
// W3C (or any other) specification, but will still be available whether or
|
|
// not the hashchange event exists natively in the browser, because of the
|
|
// utility they provide.
|
|
//
|
|
// The event.fragment property contains the output of <jQuery.param.fragment>
|
|
// and the event.getState method is equivalent to the <jQuery.bbq.getState>
|
|
// method.
|
|
//
|
|
// > $(window).bind( 'hashchange', function( event ) {
|
|
// > var hash_str = event.fragment,
|
|
// > param_obj = event.getState(),
|
|
// > param_val = event.getState( 'param_name' ),
|
|
// > param_val_coerced = event.getState( 'param_name', true );
|
|
// > ...
|
|
// > });
|
|
//
|
|
// Usage in jQuery 1.3.2:
|
|
//
|
|
// In jQuery 1.3.2, the event object cannot to be augmented as in jQuery 1.4+,
|
|
// so the fragment state isn't bound to the event object and must instead be
|
|
// parsed using the <jQuery.param.fragment> and <jQuery.bbq.getState> methods.
|
|
//
|
|
// > $(window).bind( 'hashchange', function( event ) {
|
|
// > var hash_str = $.param.fragment(),
|
|
// > param_obj = $.bbq.getState(),
|
|
// > param_val = $.bbq.getState( 'param_name' ),
|
|
// > param_val_coerced = $.bbq.getState( 'param_name', true );
|
|
// > ...
|
|
// > });
|
|
//
|
|
// Additional Notes:
|
|
//
|
|
// * Due to changes in the special events API, jQuery BBQ v1.2 or newer is
|
|
// required to enable the augmented event object in jQuery 1.4.2 and newer.
|
|
// * See <jQuery hashchange event> for more detailed information.
|
|
|
|
special[ str_hashchange ] = $.extend( special[ str_hashchange ], {
|
|
|
|
// Augmenting the event object with the .fragment property and .getState
|
|
// method requires jQuery 1.4 or newer. Note: with 1.3.2, everything will
|
|
// work, but the event won't be augmented)
|
|
add: function( handleObj ) {
|
|
var old_handler;
|
|
|
|
function new_handler(e) {
|
|
// e.fragment is set to the value of location.hash (with any leading #
|
|
// removed) at the time the event is triggered.
|
|
var hash = e[ str_fragment ] = jq_param_fragment();
|
|
|
|
// e.getState() works just like $.bbq.getState(), but uses the
|
|
// e.fragment property stored on the event object.
|
|
e.getState = function( key, coerce ) {
|
|
return key === undefined || typeof key === 'boolean'
|
|
? jq_deparam( hash, key ) // 'key' really means 'coerce' here
|
|
: jq_deparam( hash, coerce )[ key ];
|
|
};
|
|
|
|
old_handler.apply( this, arguments );
|
|
};
|
|
|
|
// This may seem a little complicated, but it normalizes the special event
|
|
// .add method between jQuery 1.4/1.4.1 and 1.4.2+
|
|
if ( $.isFunction( handleObj ) ) {
|
|
// 1.4, 1.4.1
|
|
old_handler = handleObj;
|
|
return new_handler;
|
|
} else {
|
|
// 1.4.2+
|
|
old_handler = handleObj.handler;
|
|
handleObj.handler = new_handler;
|
|
}
|
|
}
|
|
|
|
});
|
|
|
|
})(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
|
|
// $(window).hashchange() like jQuery provides for built-in events.
|
|
// Renamed jQuery.hashchangeDelay to <jQuery.fn.hashchange.delay> and
|
|
// lowered its default value to 50. Added <jQuery.fn.hashchange.domain>
|
|
// and <jQuery.fn.hashchange.src> properties plus document-domain.html
|
|
// file to address access denied issues when setting document.domain in
|
|
// IE6/7.
|
|
// 1.2 - (2/11/2010) Fixed a bug where coming back to a page using this plugin
|
|
// from a page on another domain would cause an error in Safari 4. Also,
|
|
// IE6/7 Iframe is now inserted after the body (this actually works),
|
|
// which prevents the page from scrolling when the event is first bound.
|
|
// Event can also now be bound before DOM ready, but it won't be usable
|
|
// before then in IE6/7.
|
|
// 1.1 - (1/21/2010) Incorporated document.documentMode test to fix IE8 bug
|
|
// where browser version is incorrectly reported as 8.0, despite
|
|
// inclusion of the X-UA-Compatible IE=EmulateIE7 meta tag.
|
|
// 1.0 - (1/9/2010) Initial Release. Broke out the jQuery BBQ event.special
|
|
// window.onhashchange functionality into a separate plugin for users
|
|
// who want just the basic event & back button support, without all the
|
|
// extra awesomeness that BBQ provides. This plugin will be included as
|
|
// part of jQuery BBQ, but also be available separately.
|
|
|
|
(function($,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
|
|
(navigator.userAgent.match(/MSIE/i) !== null) && !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);
|