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