text: // 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 button rendered via {@link goog.ui.CustomButtonRenderer}.
   *
   * @author attila@google.com (Attila Bodis)
   */
  
  goog.provide('goog.ui.CustomButton');
  
  goog.require('goog.ui.Button');
  goog.require('goog.ui.CustomButtonRenderer');
  goog.require('goog.ui.registry');
  
  
  
  /**
   * A custom button control.  Identical to {@link goog.ui.Button}, except it
   * defaults its renderer to {@link goog.ui.CustomButtonRenderer}.  One could
   * just as easily pass {@code goog.ui.CustomButtonRenderer.getInstance()} to
   * the {@link goog.ui.Button} constructor and get the same result.  Provided
   * for convenience.
   *
   * @param {goog.ui.ControlContent} content Text caption or existing DOM
   *    structure to display as the button's caption.
   * @param {goog.ui.ButtonRenderer=} opt_renderer Optional renderer used to
   *    render or decorate the button; defaults to
   *    {@link goog.ui.CustomButtonRenderer}.
   * @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper, used for
   *    document interaction.
   * @constructor
   * @extends {goog.ui.Button}
   */
  goog.ui.CustomButton = function(content, opt_renderer, opt_domHelper) {
    goog.ui.Button.call(
        this, content, opt_renderer || goog.ui.CustomButtonRenderer.getInstance(),
        opt_domHelper);
  };
  goog.inherits(goog.ui.CustomButton, goog.ui.Button);
  
  
  // Register a decorator factory function for goog.ui.CustomButtons.
  goog.ui.registry.setDecoratorByClassName(
      goog.ui.CustomButtonRenderer.CSS_CLASS, function() {
        // CustomButton defaults to using CustomButtonRenderer.
        return new goog.ui.CustomButton(null);
      });
  