aura: brightness and volume bubble.

chrome/browser/chromeos/brightness_bubble.h

 // Copyright (c) 2010 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_CHROMEOS_BRIGHTNESS_BUBBLE_H_
 #define CHROME_BROWSER_CHROMEOS_BRIGHTNESS_BUBBLE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "chrome/browser/chromeos/setting_level_bubble.h"
+#include "views/widget/widget.h"
 
 template <typename T> struct DefaultSingletonTraits;
 
 namespace chromeos {
 
 // Singleton class controlling brightness bubble.
-class BrightnessBubble : public SettingLevelBubble {
+class BrightnessBubble : public views::Widget::Observer {
  public:
+  // Returns the singleton brightness bubble instance.
   static BrightnessBubble* GetInstance();
 
+  // views::Widget::Observer overrides:
+  void OnWidgetClosing(views::Widget* widget) OVERRIDE;
+
+  // Updates the target |percent| and icon to be used, sets
+  // the bubble to |enabled| and shows the bubble.
+  void ShowBubble(double percent, bool enabled);
+
+  // Update the bubble |percent| and |enabled| state. See

[Daniel Erat, 2011/10/24 15:52:10]

nit: s/Update/Updates/

[alicet1, 2011/10/24 17:41:36]

Done.

+  // comments at setting_level_bubble.h.
+  void UpdateWithoutShowingBubble(double percent, bool enabled);
+
+  // Hides the bubble.
+  void HideBubble();
+
  private:
   friend struct DefaultSingletonTraits<BrightnessBubble>;
 
   BrightnessBubble();
-  virtual ~BrightnessBubble() {}
+  virtual ~BrightnessBubble();
+
+  // Check that widget has been created or is not closed.

[Daniel Erat, 2011/10/24 15:52:10]

nit: Checks

[alicet1, 2011/10/24 17:41:36]

Done.

+  // Create widget if needed.

[Daniel Erat, 2011/10/24 15:52:10]

nit: Creates

[alicet1, 2011/10/24 17:41:36]

Done.

+  void MaybeCreateWidget(double percent, bool enabled);
+
+  // Bubble widget.
+  views::Widget* widget_;
+
+  // Whether the bubble widget is closed.
+  bool widget_closed_;
+
+  FRIEND_TEST_ALL_PREFIXES(BrightnessBubbleTest, UpdateWithoutShowing);
 
   DISALLOW_COPY_AND_ASSIGN(BrightnessBubble);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_BRIGHTNESS_BUBBLE_H_