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// Copyright (c) 2012 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 ASH_SYSTEM_SESSION_LENGTH_LIMIT_TRAY_SESSION_LENGTH_LIMIT_H_
#define ASH_SYSTEM_SESSION_LENGTH_LIMIT_TRAY_SESSION_LENGTH_LIMIT_H_
#include "ash/system/session_length_limit/session_length_limit_observer.h"
#include "ash/system/tray/system_tray_item.h"
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
namespace ash {
namespace test {
class TraySessionLengthLimitTest;
}
namespace internal {
namespace tray {
class RemainingSessionTimeTrayView;
}
// Adds a countdown timer to the system tray if the session length is limited.
class ASH_EXPORT TraySessionLengthLimit : public SystemTrayItem,
public SessionLengthLimitObserver {
public:
enum LimitState {
LIMIT_NONE,
LIMIT_SET,
LIMIT_EXPIRING_SOON
};
explicit TraySessionLengthLimit(SystemTray* system_tray);
virtual ~TraySessionLengthLimit();
// SystemTrayItem:
virtual views::View* CreateTrayView(user::LoginStatus status) OVERRIDE;
virtual void DestroyTrayView() OVERRIDE;
virtual void UpdateAfterShelfAlignmentChange(
ShelfAlignment alignment) OVERRIDE;
// SessionLengthLimitObserver:
virtual void OnSessionStartTimeChanged() OVERRIDE;
virtual void OnSessionLengthLimitChanged() OVERRIDE;
LimitState GetLimitState() const;
base::TimeDelta GetRemainingSessionTime() const;
private:
friend class test::TraySessionLengthLimitTest;
static const char kNotificationId[];
void Update();
bool IsTrayViewVisibleForTest();
tray::RemainingSessionTimeTrayView* tray_view_;
LimitState limit_state_;
base::TimeTicks session_start_time_;
base::TimeDelta limit_;
base::TimeDelta remaining_session_time_;
scoped_ptr<base::RepeatingTimer<TraySessionLengthLimit> > timer_;
DISALLOW_COPY_AND_ASSIGN(TraySessionLengthLimit);
};
} // namespace internal
} // namespace ash
#endif // ASH_SYSTEM_SESSION_LENGTH_LIMIT_TRAY_SESSION_LENGTH_LIMIT_H_
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