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// Copyright 2007 The Closure Library Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS-IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
/**
* @fileoverview A class for representing menu headers.
* @see goog.ui.Menu
*
*/
goog.provide('goog.ui.MenuHeader');
goog.require('goog.ui.Component');
goog.require('goog.ui.Control');
goog.require('goog.ui.MenuHeaderRenderer');
goog.require('goog.ui.registry');
/**
* Class representing a menu header.
* @param {goog.ui.ControlContent} content Text caption or DOM structure to
* display as the content of the item (use to add icons or styling to
* menus).
* @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper used for
* document interactions.
* @param {goog.ui.MenuHeaderRenderer=} opt_renderer Optional renderer.
* @constructor
* @extends {goog.ui.Control}
*/
goog.ui.MenuHeader = function(content, opt_domHelper, opt_renderer) {
goog.ui.Control.call(
this, content, opt_renderer || goog.ui.MenuHeaderRenderer.getInstance(),
opt_domHelper);
this.setSupportedState(goog.ui.Component.State.DISABLED, false);
this.setSupportedState(goog.ui.Component.State.HOVER, false);
this.setSupportedState(goog.ui.Component.State.ACTIVE, false);
this.setSupportedState(goog.ui.Component.State.FOCUSED, false);
// Headers are always considered disabled.
this.setStateInternal(goog.ui.Component.State.DISABLED);
};
goog.inherits(goog.ui.MenuHeader, goog.ui.Control);
// Register a decorator factory function for goog.ui.MenuHeaders.
goog.ui.registry.setDecoratorByClassName(
goog.ui.MenuHeaderRenderer.CSS_CLASS, function() {
// MenuHeader defaults to using MenuHeaderRenderer.
return new goog.ui.MenuHeader(null);
});
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