1 // Copyright 2013 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_SEARCH_INSTANT_SERVICE_H_ 6 #define CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_ 7 8 #include <map> 9 #include <set> 10 #include <string> 11 #include <vector> 12 13 #include "base/basictypes.h" 14 #include "base/compiler_specific.h" 15 #include "base/gtest_prod_util.h" 16 #include "base/memory/ref_counted.h" 17 #include "base/memory/scoped_ptr.h" 18 #include "base/memory/weak_ptr.h" 19 #include "base/observer_list.h" 20 #include "base/prefs/pref_change_registrar.h" 21 #include "chrome/browser/google/google_url_tracker.h" 22 #include "chrome/browser/history/history_types.h" 23 #include "chrome/browser/ui/search/instant_ntp_prerenderer.h" 24 #include "chrome/browser/ui/search/instant_search_prerenderer.h" 25 #include "chrome/common/instant_types.h" 26 #include "components/browser_context_keyed_service/browser_context_keyed_service.h" 27 #include "content/public/browser/notification_observer.h" 28 #include "content/public/browser/notification_registrar.h" 29 30 class GURL; 31 class InstantIOContext; 32 class InstantServiceObserver; 33 class InstantTestBase; 34 class InstantServiceTest; 35 class Profile; 36 class ThemeService; 37 38 namespace content { 39 class WebContents; 40 } 41 42 namespace net { 43 class URLRequest; 44 } 45 46 // Tracks render process host IDs that are associated with Instant. 47 class InstantService : public BrowserContextKeyedService, 48 public content::NotificationObserver { 49 public: 50 explicit InstantService(Profile* profile); 51 virtual ~InstantService(); 52 53 // Add, remove, and query RenderProcessHost IDs that are associated with 54 // Instant processes. 55 void AddInstantProcess(int process_id); 56 bool IsInstantProcess(int process_id) const; 57 58 // Adds/Removes InstantService observers. 59 void AddObserver(InstantServiceObserver* observer); 60 void RemoveObserver(InstantServiceObserver* observer); 61 62 #if defined(UNIT_TEST) 63 int GetInstantProcessCount() const { 64 return process_ids_.size(); 65 } 66 #endif 67 68 // Most visited item API. 69 70 // Invoked by the InstantController when the Instant page wants to delete a 71 // Most Visited item. 72 void DeleteMostVisitedItem(const GURL& url); 73 74 // Invoked by the InstantController when the Instant page wants to undo the 75 // blacklist action. 76 void UndoMostVisitedDeletion(const GURL& url); 77 78 // Invoked by the InstantController when the Instant page wants to undo all 79 // Most Visited deletions. 80 void UndoAllMostVisitedDeletions(); 81 82 // Invoked by the InstantController to update theme information for NTP. 83 // 84 // TODO(kmadhusu): Invoking this from InstantController shouldn't be 85 // necessary. Investigate more and remove this from here. 86 void UpdateThemeInfo(); 87 88 // Invoked by the InstantController to update most visited items details for 89 // NTP. 90 void UpdateMostVisitedItemsInfo(); 91 92 // Forwards the request to InstantNTPPrerenderer to release and return the 93 // preloaded InstantNTP WebContents. May be NULL. InstantNTPPrerenderer will 94 // load a new InstantNTP after releasing the preloaded contents. 95 scoped_ptr<content::WebContents> ReleaseNTPContents() WARN_UNUSED_RESULT; 96 97 // The NTP WebContents. May be NULL. InstantNTPPrerenderer retains ownership. 98 content::WebContents* GetNTPContents() const; 99 100 // Notifies InstantService about the creation of a BrowserInstantController 101 // object. Used to preload InstantNTP. 102 void OnBrowserInstantControllerCreated(); 103 104 // Notifies InstantService about the destruction of a BrowserInstantController 105 // object. Used to destroy the preloaded InstantNTP. 106 void OnBrowserInstantControllerDestroyed(); 107 108 // Sends the current set of search URLs to a renderer process. 109 void SendSearchURLsToRenderer(content::RenderProcessHost* rph); 110 111 InstantSearchPrerenderer* instant_search_prerenderer() { 112 return instant_prerenderer_.get(); 113 } 114 115 private: 116 friend class InstantExtendedTest; 117 friend class InstantServiceTest; 118 friend class InstantTestBase; 119 friend class InstantUnitTestBase; 120 121 FRIEND_TEST_ALL_PREFIXES(InstantExtendedNetworkTest, 122 NTPReactsToNetworkChanges); 123 FRIEND_TEST_ALL_PREFIXES(InstantExtendedManualTest, 124 MANUAL_ShowsGoogleNTP); 125 FRIEND_TEST_ALL_PREFIXES(InstantExtendedManualTest, 126 MANUAL_SearchesFromFakebox); 127 FRIEND_TEST_ALL_PREFIXES(InstantExtendedTest, ProcessIsolation); 128 FRIEND_TEST_ALL_PREFIXES(InstantServiceTest, SendsSearchURLsToRenderer); 129 130 // Overridden from BrowserContextKeyedService: 131 virtual void Shutdown() OVERRIDE; 132 133 // Overridden from content::NotificationObserver: 134 virtual void Observe(int type, 135 const content::NotificationSource& source, 136 const content::NotificationDetails& details) OVERRIDE; 137 138 // Called when a renderer process is terminated. 139 void OnRendererProcessTerminated(int process_id); 140 141 // Called when we get new most visited items from TopSites, registered as an 142 // async callback. Parses them and sends them to the renderer via 143 // SendMostVisitedItems. 144 void OnMostVisitedItemsReceived(const history::MostVisitedURLList& data); 145 146 // Notifies the observer about the last known most visited items. 147 void NotifyAboutMostVisitedItems(); 148 149 // Theme changed notification handler. 150 void OnThemeChanged(ThemeService* theme_service); 151 152 void OnGoogleURLUpdated(Profile* profile, 153 GoogleURLTracker::UpdatedDetails* details); 154 155 void OnDefaultSearchProviderChanged(const std::string& pref_name); 156 157 // Used by tests. 158 InstantNTPPrerenderer* ntp_prerenderer(); 159 160 void ResetInstantSearchPrerenderer(); 161 162 Profile* const profile_; 163 164 // The process ids associated with Instant processes. 165 std::set<int> process_ids_; 166 167 // InstantMostVisitedItems sent to the Instant Pages. 168 std::vector<InstantMostVisitedItem> most_visited_items_; 169 170 // Theme-related data for NTP overlay to adopt themes. 171 scoped_ptr<ThemeBackgroundInfo> theme_info_; 172 173 ObserverList<InstantServiceObserver> observers_; 174 175 content::NotificationRegistrar registrar_; 176 177 PrefChangeRegistrar profile_pref_registrar_; 178 179 scoped_refptr<InstantIOContext> instant_io_context_; 180 181 InstantNTPPrerenderer ntp_prerenderer_; 182 183 // Total number of BrowserInstantController objects (does not include objects 184 // created for OTR browser windows). Used to preload and delete InstantNTP. 185 size_t browser_instant_controller_object_count_; 186 187 // Set to NULL if the default search provider does not support Instant. 188 scoped_ptr<InstantSearchPrerenderer> instant_prerenderer_; 189 190 // Used for Top Sites async retrieval. 191 base::WeakPtrFactory<InstantService> weak_ptr_factory_; 192 193 DISALLOW_COPY_AND_ASSIGN(InstantService); 194 }; 195 196 #endif // CHROME_BROWSER_SEARCH_INSTANT_SERVICE_H_ 197
