[Toolbar] Base toolbar button class with background images for button states

chrome/browser/ui/views/toolbar/reload_button.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_TOOLBAR_RELOAD_BUTTON_H__
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_RELOAD_BUTTON_H__
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/timer/timer.h"
+#include "chrome/browser/ui/views/toolbar/toolbar_button.h"
 #include "ui/base/models/simple_menu_model.h"
 #include "ui/views/controls/button/button_dropdown.h"
 
 class CommandUpdater;
 class LocationBarView;
 
 ////////////////////////////////////////////////////////////////////////////////
 //
 // ReloadButton
 //
 // The reload button in the toolbar, which changes to a stop button when a page
 // load is in progress. Trickiness comes from the desire to have the 'stop'
 // button not change back to 'reload' if the user's mouse is hovering over it
 // (to prevent mis-clicks).
 //
 ////////////////////////////////////////////////////////////////////////////////
 
-class ReloadButton : public views::ButtonDropDown,
-                     public views::ButtonListener,
+class ReloadButton : public ToolbarButton,
                      public ui::SimpleMenuModel::Delegate {
  public:
   enum Mode { MODE_RELOAD = 0, MODE_STOP };
 
   // The button's class name.
   static const char kViewClassName[];
 
   ReloadButton(LocationBarView* location_bar,
                CommandUpdater* command_updater);
   virtual ~ReloadButton();
@@ skipping 56 matching lines @@
   Mode visible_mode_;
 
   // The delay times for the timers.  These are members so that tests can modify
   // them.
   base::TimeDelta double_click_timer_delay_;
   base::TimeDelta stop_to_reload_timer_delay_;
 
   // Indicates if reload menu is enabled.
   bool menu_enabled_;
 
-  // The parent class's images_ member is used for the current images,
-  // and this array is used to hold the alternative images.
+  // The images used to render the different states of this button.
+  gfx::ImageSkia images_[STATE_COUNT];
+
+  // Array is used to hold the alternative images.
   // We swap between the two when changing mode.
   gfx::ImageSkia alternate_images_[STATE_COUNT];
 
   // TESTING ONLY
   // True if we should pretend the button is hovered.
   bool testing_mouse_hovered_;
   // Increments when we would tell the browser to "reload", so
   // test code can tell whether we did so (as there may be no |browser_|).
   int testing_reload_count_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(ReloadButton);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_RELOAD_BUTTON_H__