| /* |
| 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; |
| }}; |
| |
