[2] | 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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