chrome/browser/google/google_search_counter.cc

   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 #include "chrome/browser/google/google_search_counter.h"
   6
   7 #include "base/logging.h"
   8 #include "components/google/core/browser/google_util.h"
   9 #include "content/public/browser/navigation_controller.h"
  10 #include "content/public/browser/navigation_details.h"
  11 #include "content/public/browser/navigation_entry.h"
  12 #include "content/public/browser/notification_service.h"
  13 #include "content/public/browser/notification_types.h"
  14
  15 // static
  16 void GoogleSearchCounter::RegisterForNotifications() {
  17   GoogleSearchCounter::GetInstance()->RegisterForNotificationsInternal();
  18 }
  19
  20 // static
  21 GoogleSearchCounter* GoogleSearchCounter::GetInstance() {
  22   return Singleton<GoogleSearchCounter>::get();
  23 }
  24
  25 GoogleSearchMetrics::AccessPoint
  26 GoogleSearchCounter::GetGoogleSearchAccessPointForSearchNavEntry(
  27     const content::NavigationEntry& entry) const {
  28   DCHECK(google_util::IsGoogleSearchUrl(entry.GetURL()));
  29
  30   // If the |entry| is FROM_ADDRESS_BAR, it comes from the omnibox; if it's
  31   // GENERATED, the user was doing a search, rather than doing a navigation to a
  32   // search URL (e.g. from hisotry, or pasted in).
  33   if (entry.GetTransitionType() == (content::PAGE_TRANSITION_GENERATED |
  34       content::PAGE_TRANSITION_FROM_ADDRESS_BAR)) {
  35     return GoogleSearchMetrics::AP_OMNIBOX;
  36   }
  37
  38   // The string "source=search_app" in the |entry| URL represents a Google
  39   // search from the Google Search App.
  40   if (entry.GetURL().query().find("source=search_app") != std::string::npos)
  41     return GoogleSearchMetrics::AP_SEARCH_APP;
  42
  43   // For all other cases that we have not yet implemented or care to measure, we
  44   // log a generic "catch-all" metric.
  45   return GoogleSearchMetrics::AP_OTHER;
  46 }
  47
  48 bool GoogleSearchCounter::ShouldRecordCommittedDetails(
  49     const content::NotificationDetails& details) const {
  50   const content::LoadCommittedDetails* commit =
  51       content::Details<content::LoadCommittedDetails>(details).ptr();
  52   return google_util::IsGoogleSearchUrl(commit->entry->GetURL());
  53 }
  54
  55 GoogleSearchCounter::GoogleSearchCounter()
  56     : search_metrics_(new GoogleSearchMetrics) {
  57 }
  58
  59 GoogleSearchCounter::~GoogleSearchCounter() {
  60 }
  61
  62 void GoogleSearchCounter::ProcessCommittedEntry(
  63     const content::NotificationSource& source,
  64     const content::NotificationDetails& details) {
  65   // Note that GoogleSearchMetrics logs metrics through UMA, which will only
  66   // transmit these counts to the server if the user has opted into sending
  67   // usage stats.
  68   const content::LoadCommittedDetails* commit =
  69       content::Details<content::LoadCommittedDetails>(details).ptr();
  70   const content::NavigationEntry& entry = *commit->entry;
  71   if (ShouldRecordCommittedDetails(details)) {
  72     search_metrics_->RecordGoogleSearch(
  73         GetGoogleSearchAccessPointForSearchNavEntry(entry));
  74   }
  75 }
  76
  77 void GoogleSearchCounter::SetSearchMetricsForTesting(
  78     GoogleSearchMetrics* search_metrics) {
  79   DCHECK(search_metrics);
  80   search_metrics_.reset(search_metrics);
  81 }
  82
  83 void GoogleSearchCounter::RegisterForNotificationsInternal() {
  84   // We always listen for all COMMITTED navigations from all sources, as any
  85   // one of them could be a navigation of interest.
  86   registrar_.Add(this, content::NOTIFICATION_NAV_ENTRY_COMMITTED,
  87                  content::NotificationService::AllSources());
  88 }
  89
  90 void GoogleSearchCounter::Observe(int type,
  91                                   const content::NotificationSource& source,
  92                                   const content::NotificationDetails& details) {
  93   switch (type) {
  94     case content::NOTIFICATION_NAV_ENTRY_COMMITTED:
  95       ProcessCommittedEntry(source, details);
  96       break;
  97     default:
  98       NOTREACHED();
  99   }
 100 }