text: // 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 Behavior for combining a color button and a menu.
   *
   * @see ../demos/split.html
   */
  
  goog.provide('goog.ui.ColorSplitBehavior');
  
  goog.require('goog.ui.ColorMenuButton');
  goog.require('goog.ui.SplitBehavior');
  
  
  
  /**
   * Constructs a ColorSplitBehavior for combining a color button and a menu.
   * To use this, provide a goog.ui.ColorButton which will be attached with
   * a goog.ui.ColorMenuButton (with no caption).
   * Whenever a color is selected from the ColorMenuButton, it will be placed in
   * the ColorButton and the user can apply it over and over (by clicking the
   * ColorButton).
   * Primary use case - setting the color of text/background in a text editor.
   *
   * @param {!goog.ui.Button} colorButton A button to interact with a color menu
   *     button (preferably a goog.ui.ColorButton).
   * @param {goog.dom.DomHelper=} opt_domHelper Optional DOM helper, used for
   *     document interaction.
   * @extends {goog.ui.SplitBehavior}
   * @constructor
   * @final
   */
  goog.ui.ColorSplitBehavior = function(colorButton, opt_domHelper) {
    goog.base(this, colorButton,
        new goog.ui.ColorMenuButton(goog.ui.ColorSplitBehavior.ZERO_WIDTH_SPACE_),
        goog.ui.SplitBehavior.DefaultHandlers.VALUE,
        undefined,
        opt_domHelper);
  };
  goog.inherits(goog.ui.ColorSplitBehavior, goog.ui.SplitBehavior);
  
  
  /**
   * A zero width space character.
   * @type {string}
   * @private
   */
  goog.ui.ColorSplitBehavior.ZERO_WIDTH_SPACE_ = '\uFEFF';
  
  