// 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_STATUS_AREA_VIEW_CHROMEOS_H_
#define CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_VIEW_CHROMEOS_H_
#pragma once

#include "chrome/browser/chromeos/status/status_area_view.h"

#include "chrome/browser/chromeos/dbus/power_manager_client.h"
#include "chrome/browser/chromeos/system/timezone_settings.h"
#include "chrome/browser/chromeos/view_ids.h"

class ClockMenuButton;

namespace chromeos {

class StatusAreaViewChromeos : public StatusAreaView,
                               public PowerManagerClient::Observer,
                               public system::TimezoneSettings::Observer {
 public:
  // The type of screen the host window is on.
  enum ScreenMode {
    LOGIN_MODE_WEBUI,    // The host is for the WebUI OOBE/login screens.
    BROWSER_MODE,        // The host is for browser.
    SCREEN_LOCKER_MODE,  // The host is for screen locker.
  };

  // True if the browser is visible (i.e. not login/OOBE).
  static bool IsBrowserMode();

  // True if not logged in into user session (i.e. login/OOBE).
  // It's not always !IsBrowserMode() as there's SCREEN_LOCKER_MODE which
  // is inside user session, using login host and browser is not available.
  static bool IsLoginMode();

  // True if user is logged in but browser session is not available
  // as screen lock is active.
  static bool IsScreenLockMode();

  // Sets current screen mode.
  static void SetScreenMode(ScreenMode mode);

  explicit StatusAreaViewChromeos();
  virtual ~StatusAreaViewChromeos();

  void Init(StatusAreaButton::Delegate* delegate);

  // PowerManagerClient::Observer:
  virtual void SystemResumed() OVERRIDE;

  // TimezoneSettings::Observer:
  virtual void TimezoneChanged(const icu::TimeZone& timezone) OVERRIDE;

  // Convenience function to add buttons to a status area for ChromeOS.
  // |clock_button| (if non-NULL) is set to the ClockMenuButton that is created
  // by this method.
  static void AddChromeosButtons(StatusAreaView* status_area,
                                 StatusAreaButton::Delegate* delegate,
                                 ClockMenuButton** clock_button);

 private:
  // Current screen mode of the status area.
  static ScreenMode screen_mode_;

  void UpdateClockText();

  DISALLOW_COPY_AND_ASSIGN(StatusAreaViewChromeos);
};

}  // namespace chromeos

#endif  // CHROME_BROWSER_CHROMEOS_STATUS_STATUS_AREA_VIEW_CHROMEOS_H_