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// Copyright 2014 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_GOOGLE_NOW_NOTIFICATION_STATS_COLLECTOR_H_
#define CHROME_BROWSER_NOTIFICATIONS_GOOGLE_NOW_NOTIFICATION_STATS_COLLECTOR_H_
#include <string>
#include "base/macros.h"
#include "ui/message_center/message_center.h"
#include "ui/message_center/message_center_observer.h"
#include "ui/message_center/message_center_types.h"
// The Google Now Notification Stats Collector listens for message center
// events and records stats about Google Now specific notifications.
class GoogleNowNotificationStatsCollector
: public message_center::MessageCenterObserver {
public:
explicit GoogleNowNotificationStatsCollector(
message_center::MessageCenter* message_center);
~GoogleNowNotificationStatsCollector() override;
private:
// MessageCenterObserver
void OnNotificationDisplayed(
const std::string& notification_id,
const message_center::DisplaySource source) override;
void OnCenterVisibilityChanged(
message_center::Visibility visibility) override;
// Counts the number of Google Now Notifications in the message center.
int CountVisibleGoogleNowNotifications();
// Returns true if the ID of a visible notification is for Google Now.
bool IsVisibleNotificationIdForGoogleNow(const std::string& notification_id);
// Weak, global.
message_center::MessageCenter* message_center_;
DISALLOW_COPY_AND_ASSIGN(GoogleNowNotificationStatsCollector);
};
#endif // CHROME_BROWSER_NOTIFICATIONS_GOOGLE_NOW_NOTIFICATION_STATS_COLLECTOR_H_
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