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// Copyright 2016 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 UI_MESSAGE_CENTER_POPUP_TIMERS_CONTROLLER_H_
#define UI_MESSAGE_CENTER_POPUP_TIMERS_CONTROLLER_H_
#include <map>
#include <string>
#include "base/macros.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/message_center_observer.h"
#include "ui/message_center/popup_timer.h"
namespace message_center {
// A class that manages all the timers running for individual notification popup
// windows. It supports weak pointers in order to allow safe callbacks when
// timers expire.
// We can use SupportsWeakPtr<> because PopupTimer does not
// access this class in its destructor so it is safe to invalidate weak pointers
// after we destroy |popup_timers_|
class MESSAGE_CENTER_EXPORT PopupTimersController
: public base::SupportsWeakPtr<PopupTimersController>,
public MessageCenterObserver,
public PopupTimer::Delegate {
public:
explicit PopupTimersController(MessageCenter* message_center);
~PopupTimersController() override;
// MessageCenterObserver implementation.
void OnNotificationDisplayed(const std::string& id,
const DisplaySource source) override;
void OnNotificationUpdated(const std::string& id) override;
void OnNotificationRemoved(const std::string& id, bool by_user) override;
// PopupTimer::Delegate implementation
void TimerFinished(const std::string& id) override;
// Pauses all running timers.
void PauseAll();
// Continues all managed timers.
void StartAll();
// Removes all managed timers.
void CancelAll();
// Starts a timer (by creating a PopupTimer) for |id|.
void StartTimer(const std::string& id,
const base::TimeDelta& timeout_in_seconds);
// Stops a single timer, reverts it to a new timeout, and restarts it.
void ResetTimer(const std::string& id,
const base::TimeDelta& timeout_in_seconds);
// Pauses a single timer, such that it will continue where it left off after a
// call to StartAll or StartTimer.
void PauseTimer(const std::string& id);
// Removes and cancels a single popup timer, if it exists.
void CancelTimer(const std::string& id);
private:
// Weak, global.
MessageCenter* message_center_;
// The PopupTimerCollection contains all the managed timers by their ID.
using PopupTimerCollection = std::map<std::string, scoped_ptr<PopupTimer>>;
PopupTimerCollection popup_timers_;
DISALLOW_COPY_AND_ASSIGN(PopupTimersController);
};
} // namespace message_center
#endif // UI_MESSAGE_CENTER_POPUP_TIMERS_CONTROLLER_H_
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