Refactor cros library code into central location and have the UI elements obs...

chrome/browser/chromeos/power_menu_button.h

+// Copyright (c) 2006-2008 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_POWER_MENU_BUTTON_H_
+#define CHROME_BROWSER_CHROMEOS_POWER_MENU_BUTTON_H_
+
+#include "chrome/browser/chromeos/cros_power_library.h"
+#include "views/controls/button/menu_button.h"
+#include "views/controls/menu/menu_2.h"
+#include "views/controls/menu/view_menu_delegate.h"
+
+class CrosPowerLibrary;
+class SkBitmap;
+
+// The power menu button in the status area.
+// This class will handle getting the power status and populating the menu.
+// It handles the status icon changing and connecting to another wifi power.
+class PowerMenuButton : public views::MenuButton,
+                        public views::ViewMenuDelegate,
+                        public views::Menu2Model,
+                        public CrosPowerLibrary::Observer {
+ public:
+  PowerMenuButton();
+  virtual ~PowerMenuButton();
+
+  // views::Menu2Model implementation.
+  virtual bool HasIcons() const  { return false; }
+  virtual int GetItemCount() const;
+  virtual views::Menu2Model::ItemType GetTypeAt(int index) const;
+  virtual int GetCommandIdAt(int index) const { return index; }
+  virtual string16 GetLabelAt(int index) const;
+  virtual bool IsLabelDynamicAt(int index) const { return true; }
+  virtual bool GetAcceleratorAt(int index,
+      views::Accelerator* accelerator) const { return false; }
+  virtual bool IsItemCheckedAt(int index) const { return false; }
+  virtual int GetGroupIdAt(int index) const { return 0; }
+  virtual bool GetIconAt(int index, SkBitmap* icon) const { return false; }
+  virtual bool IsEnabledAt(int index) const { return false; }
+  virtual Menu2Model* GetSubmenuModelAt(int index) const { return NULL; }
+  virtual void HighlightChangedTo(int index) {}
+  virtual void ActivatedAt(int index) {}
+  virtual void MenuWillShow() {}
+
+  // CrosPowerLibrary::Observer implementation.
+  virtual void PowerChanged(CrosPowerLibrary* obj);
+
+ private:
+  // views::ViewMenuDelegate implementation.
+  virtual void RunMenu(views::View* source, const gfx::Point& pt,
+                       gfx::NativeView hwnd);
+
+  // Update the power icon depending on the power status.
+  void UpdateIcon();
+
+  // The number of power images.
+  static const int kNumPowerImages;
+
+  // The power menu.
+  views::Menu2 power_menu_;
+
+  DISALLOW_COPY_AND_ASSIGN(PowerMenuButton);
+};
+
+#endif  // CHROME_BROWSER_CHROMEOS_POWER_MENU_BUTTON_H_