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Diffstat (limited to '')
| -rw-r--r-- | js/dojo-1.6/dijit/_base/wai.js | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/js/dojo-1.6/dijit/_base/wai.js b/js/dojo-1.6/dijit/_base/wai.js new file mode 100644 index 0000000..5e4904e --- /dev/null +++ b/js/dojo-1.6/dijit/_base/wai.js @@ -0,0 +1,146 @@ +/*
+ Copyright (c) 2004-2011, The Dojo Foundation All Rights Reserved.
+ Available via Academic Free License >= 2.1 OR the modified BSD license.
+ see: http://dojotoolkit.org/license for details
+*/
+
+
+if(!dojo._hasResource["dijit._base.wai"]){ //_hasResource checks added by build. Do not use _hasResource directly in your code.
+dojo._hasResource["dijit._base.wai"] = true;
+dojo.provide("dijit._base.wai");
+
+
+
+dijit.wai = {
+ onload: function(){
+ // summary:
+ // Detects if we are in high-contrast mode or not
+
+ // This must be a named function and not an anonymous
+ // function, so that the widget parsing code can make sure it
+ // registers its onload function after this function.
+ // DO NOT USE "this" within this function.
+
+ // create div for testing if high contrast mode is on or images are turned off
+ var div = dojo.create("div",{
+ id: "a11yTestNode",
+ style:{
+ cssText:'border: 1px solid;'
+ + 'border-color:red green;'
+ + 'position: absolute;'
+ + 'height: 5px;'
+ + 'top: -999px;'
+ + 'background-image: url("' + (dojo.config.blankGif || dojo.moduleUrl("dojo", "resources/blank.gif")) + '");'
+ }
+ }, dojo.body());
+
+ // test it
+ var cs = dojo.getComputedStyle(div);
+ if(cs){
+ var bkImg = cs.backgroundImage;
+ var needsA11y = (cs.borderTopColor == cs.borderRightColor) || (bkImg != null && (bkImg == "none" || bkImg == "url(invalid-url:)" ));
+ dojo[needsA11y ? "addClass" : "removeClass"](dojo.body(), "dijit_a11y");
+ if(dojo.isIE){
+ div.outerHTML = ""; // prevent mixed-content warning, see http://support.microsoft.com/kb/925014
+ }else{
+ dojo.body().removeChild(div);
+ }
+ }
+ }
+};
+
+// Test if computer is in high contrast mode.
+// Make sure the a11y test runs first, before widgets are instantiated.
+if(dojo.isIE || dojo.isMoz){ // NOTE: checking in Safari messes things up
+ dojo._loaders.unshift(dijit.wai.onload);
+}
+
+dojo.mixin(dijit, {
+ hasWaiRole: function(/*Element*/ elem, /*String?*/ role){
+ // summary:
+ // Determines if an element has a particular role.
+ // returns:
+ // True if elem has the specific role attribute and false if not.
+ // For backwards compatibility if role parameter not provided,
+ // returns true if has a role
+ var waiRole = this.getWaiRole(elem);
+ return role ? (waiRole.indexOf(role) > -1) : (waiRole.length > 0);
+ },
+
+ getWaiRole: function(/*Element*/ elem){
+ // summary:
+ // Gets the role for an element (which should be a wai role).
+ // returns:
+ // The role of elem or an empty string if elem
+ // does not have a role.
+ return dojo.trim((dojo.attr(elem, "role") || "").replace("wairole:",""));
+ },
+
+ setWaiRole: function(/*Element*/ elem, /*String*/ role){
+ // summary:
+ // Sets the role on an element.
+ // description:
+ // Replace existing role attribute with new role.
+
+ dojo.attr(elem, "role", role);
+ },
+
+ removeWaiRole: function(/*Element*/ elem, /*String*/ role){
+ // summary:
+ // Removes the specified role from an element.
+ // Removes role attribute if no specific role provided (for backwards compat.)
+
+ var roleValue = dojo.attr(elem, "role");
+ if(!roleValue){ return; }
+ if(role){
+ var t = dojo.trim((" " + roleValue + " ").replace(" " + role + " ", " "));
+ dojo.attr(elem, "role", t);
+ }else{
+ elem.removeAttribute("role");
+ }
+ },
+
+ hasWaiState: function(/*Element*/ elem, /*String*/ state){
+ // summary:
+ // Determines if an element has a given state.
+ // description:
+ // Checks for an attribute called "aria-"+state.
+ // returns:
+ // true if elem has a value for the given state and
+ // false if it does not.
+
+ return elem.hasAttribute ? elem.hasAttribute("aria-"+state) : !!elem.getAttribute("aria-"+state);
+ },
+
+ getWaiState: function(/*Element*/ elem, /*String*/ state){
+ // summary:
+ // Gets the value of a state on an element.
+ // description:
+ // Checks for an attribute called "aria-"+state.
+ // returns:
+ // The value of the requested state on elem
+ // or an empty string if elem has no value for state.
+
+ return elem.getAttribute("aria-"+state) || "";
+ },
+
+ setWaiState: function(/*Element*/ elem, /*String*/ state, /*String*/ value){
+ // summary:
+ // Sets a state on an element.
+ // description:
+ // Sets an attribute called "aria-"+state.
+
+ elem.setAttribute("aria-"+state, value);
+ },
+
+ removeWaiState: function(/*Element*/ elem, /*String*/ state){
+ // summary:
+ // Removes a state from an element.
+ // description:
+ // Sets an attribute called "aria-"+state.
+
+ elem.removeAttribute("aria-"+state);
+ }
+});
+
+}
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