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Menu: Implemented new (experimental) ARIA based on discussions on the jquery-a11y list.

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jzaefferer 2010-11-16 20:35:08 +01:00
parent 9949fa4d76
commit ecc0d0e74d
1 changed files with 20 additions and 7 deletions
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27
ui/jquery.ui.menu.js vendored
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@ -12,15 +12,18 @@
* jquery.ui.widget.js
*/
(function($) {
var idIncrement = 0;
$.widget("ui.menu", {
_create: function() {
var self = this;
this.menuId = this.element.attr( "id" ) || "ui-menu-" + idIncrement++;
this.element
.addClass( "ui-menu ui-widget ui-widget-content ui-corner-all" )
.attr({
role: "listbox",
"aria-activedescendant": "ui-active-menuitem"
id: this.menuId,
role: "listbox"
})
.bind( "click.menu", function( event ) {
if ( self.options.disabled ) {
@ -120,6 +123,7 @@ $.widget("ui.menu", {
},
activate: function( event, item ) {
var self = this;
this.deactivate();
if ( this._hasScroll() ) {
var borderTop = parseFloat( $.curCSS( this.element[0], "borderTopWidth", true) ) || 0,
@ -137,17 +141,26 @@ $.widget("ui.menu", {
this.active = item.first()
.children( "a" )
.addClass( "ui-state-hover" )
.attr( "id", "ui-active-menuitem" )
.attr( "id", function(index, id) {
return (self.itemId = id || self.menuId + "-activedescendant");
})
.end();
// need to remove the attribute before adding it for the screenreader to pick up the change
// see http://groups.google.com/group/jquery-a11y/msg/929e0c1e8c5efc8f
this.element.removeAttr("aria-activedescenant").attr("aria-activedescenant", self.itemId);
this._trigger( "focus", event, { item: item } );
},
deactivate: function(event) {
if (!this.active) { return; }
if (!this.active) {
return;
}
this.active.children( "a" )
.removeClass( "ui-state-hover" )
.removeAttr( "id" );
var self = this;
this.active.children( "a" ).removeClass( "ui-state-hover" );
// remove only generated id
$( "#" + self.menuId + "-activedescendant" ).removeAttr( "id" );
this.element.removeAttr( "aria-activedescenant" );
this._trigger( "blur", event );
this.active = null;
},