| 1 | define([ |
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| 2 | "require", // require.toUrl |
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| 3 | "dojo/_base/config", // config.blankGif |
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| 4 | "dojo/dom-class", // domClass.add domConstruct.create domStyle.getComputedStyle |
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| 5 | "dojo/dom-construct", // domClass.add domConstruct.create domStyle.getComputedStyle |
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| 6 | "dojo/dom-style", // domClass.add domConstruct.create domStyle.getComputedStyle |
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| 7 | "dojo/ready", // ready |
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| 8 | "dojo/_base/sniff", // has("ie") has("mozilla") |
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| 9 | "dojo/_base/window" // win.body |
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| 10 | ], function(require, config, domClass, domConstruct, domStyle, ready, has, win){ |
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| 11 | |
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| 12 | // module: |
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| 13 | // dijit/hccss |
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| 14 | // summary: |
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| 15 | // Test if computer is in high contrast mode, and sets dijit_a11y flag on <body> if it is. |
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| 16 | |
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| 17 | if(has("ie") || has("mozilla")){ // NOTE: checking in Safari messes things up |
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| 18 | // priority is 90 to run ahead of parser priority of 100 |
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| 19 | ready(90, function(){ |
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| 20 | // summary: |
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| 21 | // Detects if we are in high-contrast mode or not |
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| 22 | |
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| 23 | // create div for testing if high contrast mode is on or images are turned off |
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| 24 | var div = domConstruct.create("div",{ |
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| 25 | id: "a11yTestNode", |
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| 26 | style:{ |
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| 27 | cssText:'border: 1px solid;' |
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| 28 | + 'border-color:red green;' |
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| 29 | + 'position: absolute;' |
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| 30 | + 'height: 5px;' |
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| 31 | + 'top: -999px;' |
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| 32 | + 'background-image: url("' + (config.blankGif || require.toUrl("dojo/resources/blank.gif")) + '");' |
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| 33 | } |
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| 34 | }, win.body()); |
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| 35 | |
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| 36 | // test it |
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| 37 | var cs = domStyle.getComputedStyle(div); |
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| 38 | if(cs){ |
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| 39 | var bkImg = cs.backgroundImage; |
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| 40 | var needsA11y = (cs.borderTopColor == cs.borderRightColor) || (bkImg != null && (bkImg == "none" || bkImg == "url(invalid-url:)" )); |
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| 41 | if(needsA11y){ |
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| 42 | domClass.add(win.body(), "dijit_a11y"); |
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| 43 | } |
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| 44 | if(has("ie")){ |
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| 45 | div.outerHTML = ""; // prevent mixed-content warning, see http://support.microsoft.com/kb/925014 |
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| 46 | }else{ |
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| 47 | win.body().removeChild(div); |
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| 48 | } |
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| 49 | } |
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| 50 | }); |
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| 51 | } |
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| 52 | }); |
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