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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 CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_IMPL_H_
#define CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_IMPL_H_
#include <deque>
#include <string>
#include <vector>
#include "base/id_map.h"
#include "base/memory/scoped_ptr.h"
#include "base/timer.h"
#include "chrome/browser/api/prefs/pref_member.h"
#include "chrome/browser/notifications/balloon.h"
#include "chrome/browser/notifications/balloon_collection.h"
#include "chrome/browser/notifications/notification_prefs_manager.h"
#include "chrome/browser/notifications/notification_ui_manager.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
class Notification;
class PrefService;
class Profile;
class QueuedNotification;
// The notification manager manages use of the desktop for notifications.
// It maintains a queue of pending notifications when space becomes constrained.
class NotificationUIManagerImpl
: public NotificationUIManager,
public NotificationPrefsManager,
public BalloonCollection::BalloonSpaceChangeListener,
public content::NotificationObserver {
public:
explicit NotificationUIManagerImpl(PrefService* local_state);
virtual ~NotificationUIManagerImpl();
// Initializes the UI manager with a balloon collection; this object
// takes ownership of the balloon collection.
void Initialize(BalloonCollection* balloon_collection);
// NotificationUIManager:
virtual void Add(const Notification& notification,
Profile* profile) OVERRIDE;
virtual bool CancelById(const std::string& notification_id) OVERRIDE;
virtual bool CancelAllBySourceOrigin(const GURL& source_origin) OVERRIDE;
virtual void CancelAll() OVERRIDE;
virtual BalloonCollection* balloon_collection() OVERRIDE;
virtual NotificationPrefsManager* prefs_manager() OVERRIDE;
virtual void GetQueuedNotificationsForTesting(
std::vector<const Notification*>* notifications) OVERRIDE;
// NotificationPrefsManager:
virtual BalloonCollection::PositionPreference
GetPositionPreference() const OVERRIDE;
virtual void SetPositionPreference(
BalloonCollection::PositionPreference preference) OVERRIDE;
private:
// content::NotificationObserver override.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// Attempts to display notifications from the show_queue if the user
// is active.
void CheckAndShowNotifications();
// Attempts to display notifications from the show_queue.
void ShowNotifications();
// BalloonCollectionObserver implementation.
virtual void OnBalloonSpaceChanged() OVERRIDE;
// Replace an existing notification with this one if applicable;
// returns true if the replacement happened.
bool TryReplacement(const Notification& notification);
// Checks the user state to decide if we want to show the notification.
void CheckUserState();
// An owned pointer to the collection of active balloons.
scoped_ptr<BalloonCollection> balloon_collection_;
// A queue of notifications which are waiting to be shown.
typedef std::deque<QueuedNotification*> NotificationDeque;
NotificationDeque show_queue_;
// Registrar for the other kind of notifications (event signaling).
content::NotificationRegistrar registrar_;
// Prefs listener for the position preference.
IntegerPrefMember position_pref_;
// Used by screen-saver and full-screen handling support.
bool is_user_active_;
base::RepeatingTimer<NotificationUIManagerImpl> user_state_check_timer_;
DISALLOW_COPY_AND_ASSIGN(NotificationUIManagerImpl);
};
#endif // CHROME_BROWSER_NOTIFICATIONS_NOTIFICATION_UI_MANAGER_IMPL_H_
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