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define("dijit/hccss", [
"require", // require.toUrl
"dojo/_base/config", // config.blankGif
"dojo/dom-class", // domClass.add domConstruct.create domStyle.getComputedStyle
"dojo/dom-construct", // domClass.add domConstruct.create domStyle.getComputedStyle
"dojo/dom-style", // domClass.add domConstruct.create domStyle.getComputedStyle
"dojo/ready", // ready
"dojo/_base/sniff", // has("ie") has("mozilla")
"dojo/_base/window" // win.body
], function(require, config, domClass, domConstruct, domStyle, ready, has, win){
// module:
// dijit/hccss
// summary:
// Test if computer is in high contrast mode, and sets dijit_a11y flag on <body> if it is.
if(has("ie") || has("mozilla")){ // NOTE: checking in Safari messes things up
// priority is 90 to run ahead of parser priority of 100
ready(90, function(){
// summary:
// Detects if we are in high-contrast mode or not
// create div for testing if high contrast mode is on or images are turned off
var div = domConstruct.create("div",{
id: "a11yTestNode",
style:{
cssText:'border: 1px solid;'
+ 'border-color:red green;'
+ 'position: absolute;'
+ 'height: 5px;'
+ 'top: -999px;'
+ 'background-image: url("' + (config.blankGif || require.toUrl("dojo/resources/blank.gif")) + '");'
}
}, win.body());
// test it
var cs = domStyle.getComputedStyle(div);
if(cs){
var bkImg = cs.backgroundImage;
var needsA11y = (cs.borderTopColor == cs.borderRightColor) || (bkImg != null && (bkImg == "none" || bkImg == "url(invalid-url:)" ));
if(needsA11y){
domClass.add(win.body(), "dijit_a11y");
}
if(has("ie")){
div.outerHTML = ""; // prevent mixed-content warning, see http://support.microsoft.com/kb/925014
}else{
win.body().removeChild(div);
}
}
});
}
});
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