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// Copyright 2010 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 Similiar to {@link goog.ui.FlatButtonRenderer},
* but underlines text instead of adds borders.
*
* For accessibility reasons, it is best to use this with a goog.ui.Button
* instead of an A element for links that perform actions in the page. Links
* that have an href and open a new page can and should remain as A elements.
*
* @author robbyw@google.com (Robby Walker)
*/
goog.provide('goog.ui.LinkButtonRenderer');
goog.require('goog.ui.Button');
goog.require('goog.ui.FlatButtonRenderer');
goog.require('goog.ui.registry');
/**
* Link renderer for {@link goog.ui.Button}s. Link buttons can contain
* almost arbitrary HTML content, will flow like inline elements, but can be
* styled like block-level elements.
* @constructor
* @extends {goog.ui.FlatButtonRenderer}
*/
goog.ui.LinkButtonRenderer = function() {
goog.ui.FlatButtonRenderer.call(this);
};
goog.inherits(goog.ui.LinkButtonRenderer, goog.ui.FlatButtonRenderer);
goog.addSingletonGetter(goog.ui.LinkButtonRenderer);
/**
* Default CSS class to be applied to the root element of components rendered
* by this renderer.
* @type {string}
*/
goog.ui.LinkButtonRenderer.CSS_CLASS = goog.getCssName('goog-link-button');
/** @override */
goog.ui.LinkButtonRenderer.prototype.getCssClass = function() {
return goog.ui.LinkButtonRenderer.CSS_CLASS;
};
// Register a decorator factory function for Link Buttons.
goog.ui.registry.setDecoratorByClassName(goog.ui.LinkButtonRenderer.CSS_CLASS,
function() {
// Uses goog.ui.Button, but with LinkButtonRenderer.
return new goog.ui.Button(null, goog.ui.LinkButtonRenderer.getInstance());
});
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