Update To 11.40.268.0
[platform/framework/web/crosswalk.git] / src / chrome / browser / google / google_search_counter.h
1 // Copyright (c) 2012 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 #ifndef CHROME_BROWSER_GOOGLE_GOOGLE_SEARCH_COUNTER_H_
6 #define CHROME_BROWSER_GOOGLE_GOOGLE_SEARCH_COUNTER_H_
7
8 #include "base/memory/singleton.h"
9 #include "components/google/core/browser/google_search_metrics.h"
10 #include "content/public/browser/notification_observer.h"
11 #include "content/public/browser/notification_registrar.h"
12
13 namespace content {
14 class NavigationEntry;
15 }
16
17 // A listener for counting Google searches from various search access points. No
18 // actual search query content is observed. See GoogleSearchMetrics for more
19 // details about these access points.
20 class GoogleSearchCounter : content::NotificationObserver {
21  public:
22   // Initialize the global instance.
23   static void RegisterForNotifications();
24
25   // Return the singleton instance of GoogleSearchCounter.
26   static GoogleSearchCounter* GetInstance();
27
28   // Returns the Google search access point for the given |entry|. This method
29   // assumes that we have already verified that |entry|'s URL is a Google search
30   // URL.
31   GoogleSearchMetrics::AccessPoint GetGoogleSearchAccessPointForSearchNavEntry(
32       const content::NavigationEntry& entry) const;
33
34   // Returns true if |details| is valid and corresponds to a search results
35   // page.
36   bool ShouldRecordCommittedDetails(
37       const content::NotificationDetails& details) const;
38
39   const GoogleSearchMetrics* search_metrics() const {
40     return search_metrics_.get();
41   }
42
43  private:
44   friend struct DefaultSingletonTraits<GoogleSearchCounter>;
45   friend class GoogleSearchCounterTest;
46   friend class GoogleSearchCounterAndroidTest;
47
48   GoogleSearchCounter();
49   ~GoogleSearchCounter() override;
50
51   void ProcessCommittedEntry(const content::NotificationSource& source,
52                              const content::NotificationDetails& details);
53
54   // Replace the internal metrics object with a dummy or a mock. This instance
55   // takes ownership of |search_metrics|.
56   void SetSearchMetricsForTesting(GoogleSearchMetrics* search_metrics);
57
58   // Register this counter for all notifications we care about.
59   void RegisterForNotificationsInternal();
60
61   // content::NotificationObserver
62   void Observe(int type,
63                const content::NotificationSource& source,
64                const content::NotificationDetails& details) override;
65
66   content::NotificationRegistrar registrar_;
67   scoped_ptr<GoogleSearchMetrics> search_metrics_;
68
69   DISALLOW_COPY_AND_ASSIGN(GoogleSearchCounter);
70 };
71
72 #endif  // CHROME_BROWSER_GOOGLE_GOOGLE_SEARCH_COUNTER_H_