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      1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CHROME_BROWSER_CHROMEOS_STATUS_INPUT_METHOD_MENU_BUTTON_H_
      6 #define CHROME_BROWSER_CHROMEOS_STATUS_INPUT_METHOD_MENU_BUTTON_H_
      7 #pragma once
      8 
      9 #include <string>
     10 
     11 #include "chrome/browser/chromeos/status/input_method_menu.h"
     12 #include "chrome/browser/chromeos/status/status_area_button.h"
     13 #include "views/controls/menu/view_menu_delegate.h"
     14 
     15 namespace chromeos {
     16 
     17 class StatusAreaHost;
     18 
     19 // A class for the button in the status area which expands the dropdown menu for
     20 // switching input method and keyboard layout.
     21 class InputMethodMenuButton : public StatusAreaButton,
     22                               public views::ViewMenuDelegate {
     23  public:
     24   explicit InputMethodMenuButton(StatusAreaHost* host);
     25   virtual ~InputMethodMenuButton() {}
     26 
     27   // views::View implementation.
     28   virtual gfx::Size GetPreferredSize();
     29   virtual void OnLocaleChanged();
     30 
     31   // views::ViewMenuDelegate implementation.
     32   virtual void RunMenu(views::View* unused_source, const gfx::Point& pt);
     33 
     34   // InputMethodMenu implementation.
     35   virtual void UpdateUI(const std::string& input_method_id,
     36                         const std::wstring& name,
     37                         const std::wstring& tooltip,
     38                         size_t num_active_input_methods);
     39   virtual bool ShouldSupportConfigUI();
     40   virtual void OpenConfigUI();
     41 
     42   // Updates the UI from the current input method.
     43   void UpdateUIFromCurrentInputMethod();
     44 
     45  private:
     46   // Returns true if the Chrome window where the button lives is active.
     47   bool WindowIsActive();
     48 
     49   scoped_ptr<InputMethodMenu> menu_;
     50 
     51   DISALLOW_COPY_AND_ASSIGN(InputMethodMenuButton);
     52 };
     53 
     54 }  // namespace chromeos
     55 
     56 #endif  // CHROME_BROWSER_CHROMEOS_STATUS_INPUT_METHOD_MENU_BUTTON_H_
     57