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/*
Copyright (c) 2004-2006, The Dojo Foundation
All Rights Reserved.
Licensed under the Academic Free License version 2.1 or above OR the
modified BSD license. For more information on Dojo licensing, see:
http://dojotoolkit.org/community/licensing.shtml
*/
dojo.provide("dojo.a11y");
dojo.require("dojo.uri.*");
dojo.require("dojo.html.common");
dojo.a11y = {imgPath:dojo.uri.moduleUri("dojo.widget", "templates/images"), doAccessibleCheck:true, accessible:null, checkAccessible:function () {
if (this.accessible === null) {
this.accessible = false;
if (this.doAccessibleCheck == true) {
this.accessible = this.testAccessible();
}
}
return this.accessible;
}, testAccessible:function () {
this.accessible = false;
if (dojo.render.html.ie || dojo.render.html.mozilla) {
var div = document.createElement("div");
div.style.backgroundImage = "url(\"" + this.imgPath + "/tab_close.gif\")";
dojo.body().appendChild(div);
var bkImg = null;
if (window.getComputedStyle) {
var cStyle = getComputedStyle(div, "");
bkImg = cStyle.getPropertyValue("background-image");
} else {
bkImg = div.currentStyle.backgroundImage;
}
var bUseImgElem = false;
if (bkImg != null && (bkImg == "none" || bkImg == "url(invalid-url:)")) {
this.accessible = true;
}
dojo.body().removeChild(div);
}
return this.accessible;
}, setCheckAccessible:function (bTest) {
this.doAccessibleCheck = bTest;
}, setAccessibleMode:function () {
if (this.accessible === null) {
if (this.checkAccessible()) {
dojo.render.html.prefixes.unshift("a11y");
}
}
return this.accessible;
}};