1// Copyright 2014 The Chromium Authors. All rights reserved. 2// Use of this source code is governed by a BSD-style license that can be 3// found in the LICENSE file. 4 5#include "chrome/browser/notifications/google_now_notification_stats_collector.h" 6 7#include <string> 8 9#include "base/metrics/sparse_histogram.h" 10#include "chrome/browser/browser_process.h" 11#include "chrome/browser/notifications/extension_welcome_notification.h" 12#include "chrome/browser/notifications/notification.h" 13#include "chrome/browser/notifications/notification_ui_manager.h" 14#include "content/public/browser/user_metrics.h" 15#include "ui/message_center/notification.h" 16 17namespace { 18const int kNotificationsMaxCount = 20; 19} 20 21GoogleNowNotificationStatsCollector::GoogleNowNotificationStatsCollector( 22 message_center::MessageCenter* message_center) 23 : message_center_(message_center) { 24 message_center_->AddObserver(this); 25} 26 27GoogleNowNotificationStatsCollector::~GoogleNowNotificationStatsCollector() { 28 message_center_->RemoveObserver(this); 29} 30 31void GoogleNowNotificationStatsCollector::OnNotificationDisplayed( 32 const std::string& notification_id, 33 const message_center::DisplaySource source) { 34 if ((source == message_center::DISPLAY_SOURCE_POPUP) && 35 IsNotificationIdForGoogleNow(notification_id)) { 36 content::RecordAction( 37 base::UserMetricsAction( 38 "GoogleNow.MessageCenter.NotificationPoppedUp")); 39 } 40} 41 42void GoogleNowNotificationStatsCollector::OnCenterVisibilityChanged( 43 message_center::Visibility visibility) { 44 if (visibility == message_center::VISIBILITY_MESSAGE_CENTER) { 45 UMA_HISTOGRAM_SPARSE_SLOWLY( 46 "GoogleNow.MessageCenter.Displayed.NotificationsVisible", 47 std::min(CountVisibleGoogleNowNotifications(), kNotificationsMaxCount)); 48 } 49} 50 51bool GoogleNowNotificationStatsCollector::IsNotificationIdForGoogleNow( 52 const std::string& notification_id) { 53 bool isGoogleNowNotification = false; 54 const Notification* const notification = 55 g_browser_process->notification_ui_manager()->FindById(notification_id); 56 if (notification) { 57 isGoogleNowNotification = 58 ((notification->notifier_id().type == 59 message_center::NotifierId::APPLICATION) && 60 (notification->notifier_id().id == 61 ExtensionWelcomeNotification::kChromeNowExtensionID)); 62 } 63 return isGoogleNowNotification; 64} 65 66int GoogleNowNotificationStatsCollector::CountVisibleGoogleNowNotifications() { 67 typedef message_center::NotificationList::Notifications Notifications; 68 const Notifications visible_notifications = 69 message_center_->GetVisibleNotifications(); 70 int google_now_notification_count = 0; 71 for (Notifications::iterator iter = visible_notifications.begin(); 72 iter != visible_notifications.end(); 73 ++iter) { 74 if ((*iter)->notifier_id().id == 75 ExtensionWelcomeNotification::kChromeNowExtensionID) 76 google_now_notification_count++; 77 } 78 return google_now_notification_count; 79} 80