The Android Open Source Project | 88b6079 | 2009-03-03 19:28:42 -0800 | [diff] [blame] | 1 | /** |
| 2 | * jQuery history event v0.1 |
| 3 | * Copyright (c) 2008 Tom Rodenberg <tarodenberg gmail com> |
| 4 | * Licensed under the GPL (http://www.gnu.org/licenses/gpl.html) license. |
| 5 | */ |
| 6 | (function($) { |
| 7 | var currentHash, previousNav, timer, hashTrim = /^.*#/; |
| 8 | |
| 9 | var msie = { |
| 10 | iframe: null, |
| 11 | getDoc: function() { |
| 12 | return msie.iframe.contentWindow.document; |
| 13 | }, |
| 14 | getHash: function() { |
| 15 | return msie.getDoc().location.hash; |
| 16 | }, |
| 17 | setHash: function(hash) { |
| 18 | var d = msie.getDoc(); |
| 19 | d.open(); |
| 20 | d.close(); |
| 21 | d.location.hash = hash; |
| 22 | } |
| 23 | }; |
| 24 | |
| 25 | var historycheck = function() { |
| 26 | var hash = msie.iframe ? msie.getHash() : location.hash; |
| 27 | if (hash != currentHash) { |
| 28 | currentHash = hash; |
| 29 | if (msie.iframe) { |
| 30 | location.hash = currentHash; |
| 31 | } |
| 32 | var current = $.history.getCurrent(); |
| 33 | $.event.trigger('history', [current, previousNav]); |
| 34 | previousNav = current; |
| 35 | } |
| 36 | }; |
| 37 | |
| 38 | $.history = { |
| 39 | add: function(hash) { |
| 40 | hash = '#' + hash.replace(hashTrim, ''); |
| 41 | if (currentHash != hash) { |
| 42 | var previous = $.history.getCurrent(); |
| 43 | location.hash = currentHash = hash; |
| 44 | if (msie.iframe) { |
| 45 | msie.setHash(currentHash); |
| 46 | } |
| 47 | $.event.trigger('historyadd', [$.history.getCurrent(), previous]); |
| 48 | } |
| 49 | if (!timer) { |
| 50 | timer = setInterval(historycheck, 100); |
| 51 | } |
| 52 | }, |
| 53 | getCurrent: function() { |
| 54 | if (currentHash) { |
| 55 | return currentHash.replace(hashTrim, ''); |
| 56 | } else { |
| 57 | return ""; |
| 58 | } |
| 59 | } |
| 60 | }; |
| 61 | |
| 62 | $.fn.history = function(fn) { |
| 63 | $(this).bind('history', fn); |
| 64 | }; |
| 65 | |
| 66 | $.fn.historyadd = function(fn) { |
| 67 | $(this).bind('historyadd', fn); |
| 68 | }; |
| 69 | |
| 70 | $(function() { |
| 71 | currentHash = location.hash; |
| 72 | if ($.browser.msie) { |
| 73 | msie.iframe = $('<iframe style="display:none" src="javascript:false;"></iframe>').prependTo('body')[0]; |
| 74 | msie.setHash(currentHash); |
| 75 | currentHash = msie.getHash(); |
| 76 | } |
| 77 | }); |
| 78 | })(jQuery); |