// Copyright (c) 2011 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_STATUS_WINDOW_SWITCHER_BUTTON_H_
#define CHROME_BROWSER_CHROMEOS_STATUS_WINDOW_SWITCHER_BUTTON_H_
#pragma once

#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chromeos/status/status_area_button.h"
#include "chrome/browser/ui/browser_list.h"
#include "content/common/notification_observer.h"
#include "views/controls/button/menu_button.h"
#include "views/controls/menu/view_menu_delegate.h"

namespace chromeos {

class StatusAreaHost;

// The window switcher button in the status area.  This button allows
// the user to move to the next window if they click on the icon.
class WindowSwitcherButton : public StatusAreaButton,
                             public views::ViewMenuDelegate,
                             public BrowserList::Observer {
 public:
  explicit WindowSwitcherButton(StatusAreaHost* host);
  virtual ~WindowSwitcherButton();

 private:
  // Updates the status of the button based on the state of the
  // browser list.
  void UpdateStatus();

  // BrowserList::Observer API
  virtual void OnBrowserAdded(const Browser* browser);
  virtual void OnBrowserRemoved(const Browser* browser);

  // views::ViewMenuDelegate implementation.
  virtual void RunMenu(views::View* source, const gfx::Point& pt);

  DISALLOW_COPY_AND_ASSIGN(WindowSwitcherButton);
};

}  // namespace chromeos

#endif  // CHROME_BROWSER_CHROMEOS_STATUS_WINDOW_SWITCHER_BUTTON_H_