1 | |
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2 | // ========================================================================= |
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3 | // ie7-recalc.js |
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4 | // ========================================================================= |
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5 | |
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6 | (function() { |
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7 | /* --------------------------------------------------------------------- |
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8 | |
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9 | This allows refreshing of IE7 style rules. If you modify the DOM |
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10 | you can update IE7 by calling document.recalc(). |
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11 | |
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12 | This should be the LAST module included. |
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13 | |
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14 | --------------------------------------------------------------------- */ |
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15 | |
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16 | if (!IE7.loaded) return; |
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17 | |
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18 | // remove all IE7 classes from an element |
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19 | CLASSES = /\sie7_class\d+/g; |
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20 | |
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21 | IE7.CSS.extend({ |
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22 | // store for elements that have style properties calculated |
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23 | elements: {}, |
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24 | handlers: [], |
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25 | |
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26 | // clear IE7 classes and styles |
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27 | reset: function() { |
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28 | this.removeEventHandlers(); |
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29 | // reset IE7 classes here |
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30 | var elements = this.elements; |
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31 | for (var i in elements) elements[i].runtimeStyle.cssText = ""; |
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32 | this.elements = {}; |
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33 | // reset runtimeStyle here |
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34 | var elements = IE7.Rule.elements; |
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35 | for (var i in elements) { |
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36 | with (elements[i]) className = className.replace(CLASSES, ""); |
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37 | } |
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38 | IE7.Rule.elements = {}; |
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39 | }, |
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40 | |
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41 | reload: function() { |
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42 | this.rules = []; |
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43 | this.getInlineStyles(); |
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44 | this.screen.load(); |
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45 | if (this.print) this.print.load(); |
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46 | this.refresh(); |
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47 | this.trash(); |
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48 | }, |
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49 | |
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50 | addRecalc: function(propertyName, test, handler, replacement) { |
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51 | // call the ancestor method to add a wrapped recalc method |
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52 | this.base(propertyName, test, function(element) { |
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53 | // execute the original recalc method |
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54 | handler(element); |
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55 | // store a reference to this element so we can clear its style later |
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56 | IE7.CSS.elements[element.uniqueID] = element; |
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57 | }, replacement); |
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58 | }, |
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59 | |
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60 | recalc: function() { |
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61 | // clear IE7 styles and classes |
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62 | this.reset(); |
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63 | // execute the ancestor method to perform recalculations |
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64 | this.base(); |
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65 | }, |
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66 | |
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67 | addEventHandler: function(element, type, handler) { |
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68 | element.attachEvent(type, handler); |
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69 | // store the handler so it can be detached later |
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70 | this.handlers.push(arguments); |
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71 | }, |
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72 | |
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73 | removeEventHandlers: function() { |
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74 | var handler; |
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75 | while (handler = this.handlers.pop()) { |
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76 | handler[0].detachEvent(handler[1], handler[2]); |
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77 | } |
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78 | }, |
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79 | |
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80 | getInlineStyles: function() { |
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81 | // load inline styles |
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82 | var styleSheets = document.getElementsByTagName("style"), styleSheet; |
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83 | for (var i = styleSheets.length - 1; (styleSheet = styleSheets[i]); i--) { |
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84 | if (!styleSheet.disabled && !styleSheet.ie7) { |
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85 | var cssText = styleSheet.cssText || styleSheet.innerHTML; |
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86 | this.styles.push(cssText); |
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87 | styleSheet.cssText = cssText; |
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88 | } |
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89 | } |
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90 | }, |
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91 | |
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92 | trash: function() { |
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93 | // trash the old style sheets |
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94 | var styleSheets = document.styleSheets, styleSheet, i; |
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95 | for (i = 0; i < styleSheets.length; i++) { |
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96 | styleSheet = styleSheets[i]; |
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97 | if (!styleSheet.ie7 && !styleSheet.cssText) { |
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98 | styleSheet.cssText = styleSheet.cssText; |
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99 | } |
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100 | } |
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101 | this.base(); |
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102 | }, |
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103 | |
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104 | getText: function(styleSheet) { |
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105 | return styleSheet.cssText || this.base(styleSheet); |
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106 | } |
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107 | }); |
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108 | |
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109 | // remove event handlers (they eat memory) |
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110 | IE7.CSS.addEventHandler(window, "onunload", function() { |
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111 | IE7.CSS.removeEventHandlers(); |
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112 | }); |
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113 | |
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114 | // store all elements with an IE7 class assigned |
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115 | IE7.Rule.elements = {}; |
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116 | |
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117 | IE7.Rule.prototype.extend({ |
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118 | add: function(element) { |
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119 | // execute the ancestor "add" method |
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120 | this.base(element); |
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121 | // store a reference to this element so we can clear its classes later |
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122 | IE7.Rule.elements[element.uniqueID] = element; |
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123 | } |
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124 | }); |
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125 | |
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126 | // store created pseudo elements |
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127 | if (IE7.PseudoElement) { |
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128 | IE7.PseudoElement.hash = {}; |
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129 | |
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130 | IE7.PseudoElement.prototype.extend({ |
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131 | create: function(target) { |
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132 | var key = this.selector + ":" + target.uniqueID; |
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133 | if (!IE7.PseudoElement.hash[key]) { |
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134 | IE7.PseudoElement.hash[key] = true; |
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135 | this.base(target); |
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136 | } |
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137 | } |
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138 | }); |
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139 | } |
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140 | |
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141 | IE7.HTML.extend({ |
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142 | elements: {}, |
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143 | |
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144 | addRecalc: function(selector, handler) { |
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145 | // call the ancestor method to add a wrapped recalc method |
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146 | this.base(selector, function(element) { |
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147 | if (!this.elements[element.uniqueID]) { |
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148 | // execute the original recalc method |
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149 | handler(element); |
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150 | // store a reference to this element so that |
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151 | // it is not "fixed" again |
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152 | this.elements[element.uniqueID] = element; |
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153 | } |
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154 | }); |
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155 | } |
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156 | }); |
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157 | |
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158 | // allow refreshing of IE7 fixes |
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159 | document.recalc = function(reload) { |
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160 | if (IE7.CSS.screen) { |
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161 | if (reload) IE7.CSS.reload(); |
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162 | IE7.recalc(); |
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163 | } |
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164 | }; |
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165 | |
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166 | })(); |
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