1 /** |
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2 * jQuery.timers - Timer abstractions for jQuery |
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3 * Written by Blair Mitchelmore (blair DOT mitchelmore AT gmail DOT com) |
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4 * Licensed under the WTFPL (http://sam.zoy.org/wtfpl/). |
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5 * Date: 2009/02/08 |
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6 * |
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7 * @author Blair Mitchelmore |
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8 * @version 1.1.2 |
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9 * |
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10 **/ |
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11 |
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12 jQuery.fn.extend({ |
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13 everyTime: function(interval, label, fn, times, belay) { |
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14 return this.each(function() { |
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15 jQuery.timer.add(this, interval, label, fn, times, belay); |
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16 }); |
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17 }, |
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18 oneTime: function(interval, label, fn) { |
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19 return this.each(function() { |
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20 jQuery.timer.add(this, interval, label, fn, 1); |
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21 }); |
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22 }, |
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23 stopTime: function(label, fn) { |
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24 return this.each(function() { |
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25 jQuery.timer.remove(this, label, fn); |
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26 }); |
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27 } |
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28 }); |
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29 |
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30 jQuery.event.special |
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31 |
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32 jQuery.extend({ |
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33 timer: { |
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34 global: [], |
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35 guid: 1, |
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36 dataKey: "jQuery.timer", |
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37 regex: /^([0-9]+(?:\.[0-9]*)?)\s*(.*s)?$/, |
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38 powers: { |
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39 // Yeah this is major overkill... |
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40 'ms': 1, |
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41 'cs': 10, |
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42 'ds': 100, |
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43 's': 1000, |
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44 'das': 10000, |
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45 'hs': 100000, |
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46 'ks': 1000000 |
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47 }, |
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48 timeParse: function(value) { |
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49 if (value == undefined || value == null) |
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50 return null; |
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51 var result = this.regex.exec(jQuery.trim(value.toString())); |
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52 if (result[2]) { |
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53 var num = parseFloat(result[1]); |
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54 var mult = this.powers[result[2]] || 1; |
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55 return num * mult; |
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56 } else { |
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57 return value; |
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58 } |
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59 }, |
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60 add: function(element, interval, label, fn, times, belay) { |
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61 var counter = 0; |
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62 |
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63 if (jQuery.isFunction(label)) { |
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64 if (!times) |
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65 times = fn; |
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66 fn = label; |
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67 label = interval; |
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68 } |
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69 |
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70 interval = jQuery.timer.timeParse(interval); |
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71 |
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72 if (typeof interval != 'number' || isNaN(interval) || interval <= 0) |
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73 return; |
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74 |
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75 if (times && times.constructor != Number) { |
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76 belay = !!times; |
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77 times = 0; |
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78 } |
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79 |
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80 times = times || 0; |
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81 belay = belay || false; |
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82 |
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83 var timers = jQuery.data(element, this.dataKey) || jQuery.data(element, this.dataKey, {}); |
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84 |
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85 if (!timers[label]) |
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86 timers[label] = {}; |
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87 |
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88 fn.timerID = fn.timerID || this.guid++; |
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89 |
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90 var handler = function() { |
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91 if (belay && this.inProgress) |
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92 return; |
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93 this.inProgress = true; |
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94 if ((++counter > times && times !== 0) || fn.call(element, counter) === false) |
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95 jQuery.timer.remove(element, label, fn); |
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96 this.inProgress = false; |
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97 }; |
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98 |
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99 handler.timerID = fn.timerID; |
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100 |
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101 if (!timers[label][fn.timerID]) |
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102 timers[label][fn.timerID] = window.setInterval(handler,interval); |
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103 |
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104 this.global.push( element ); |
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105 |
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106 }, |
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107 remove: function(element, label, fn) { |
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108 var timers = jQuery.data(element, this.dataKey), ret; |
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109 |
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110 if ( timers ) { |
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111 |
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112 if (!label) { |
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113 for ( label in timers ) |
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114 this.remove(element, label, fn); |
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115 } else if ( timers[label] ) { |
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116 if ( fn ) { |
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117 if ( fn.timerID ) { |
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118 window.clearInterval(timers[label][fn.timerID]); |
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119 delete timers[label][fn.timerID]; |
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120 } |
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121 } else { |
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122 for ( var fn in timers[label] ) { |
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123 window.clearInterval(timers[label][fn]); |
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124 delete timers[label][fn]; |
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125 } |
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126 } |
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127 |
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128 for ( ret in timers[label] ) break; |
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129 if ( !ret ) { |
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130 ret = null; |
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131 delete timers[label]; |
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132 } |
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133 } |
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134 |
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135 for ( ret in timers ) break; |
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136 if ( !ret ) |
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137 jQuery.removeData(element, this.dataKey); |
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138 } |
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139 } |
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140 } |
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141 }); |
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142 |
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143 jQuery(window).bind("unload", function() { |
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144 jQuery.each(jQuery.timer.global, function(index, item) { |
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145 jQuery.timer.remove(item); |
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146 }); |
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147 }); |
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