chrome/browser/ui/app_list/app_list_syncable_service.h

   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_UI_APP_LIST_APP_LIST_SYNCABLE_SERVICE_H_
   6 #define CHROME_BROWSER_UI_APP_LIST_APP_LIST_SYNCABLE_SERVICE_H_
   7
   8 #include <map>
   9
  10 #include "base/memory/scoped_ptr.h"
  11 #include "chrome/browser/sync/glue/sync_start_util.h"
  12 #include "components/keyed_service/core/keyed_service.h"
  13 #include "content/public/browser/notification_observer.h"
  14 #include "content/public/browser/notification_registrar.h"
  15 #include "sync/api/string_ordinal.h"
  16 #include "sync/api/sync_change.h"
  17 #include "sync/api/sync_change_processor.h"
  18 #include "sync/api/sync_error_factory.h"
  19 #include "sync/api/syncable_service.h"
  20 #include "sync/protocol/app_list_specifics.pb.h"
  21
  22 class DriveAppProvider;
  23 class ExtensionAppModelBuilder;
  24 class Profile;
  25
  26 namespace extensions {
  27 class ExtensionSystem;
  28 }
  29
  30 namespace sync_pb {
  31 class AppListSpecifics;
  32 }
  33
  34 namespace app_list {
  35
  36 class AppListFolderItem;
  37 class AppListItem;
  38 class AppListModel;
  39
  40 // Keyed Service that owns, stores, and syncs an AppListModel for a profile.
  41 class AppListSyncableService : public syncer::SyncableService,
  42                                public KeyedService,
  43                                public content::NotificationObserver {
  44  public:
  45   struct SyncItem {
  46     SyncItem(const std::string& id,
  47              sync_pb::AppListSpecifics::AppListItemType type);
  48     ~SyncItem();
  49     const std::string item_id;
  50     sync_pb::AppListSpecifics::AppListItemType item_type;
  51     std::string item_name;
  52     std::string parent_id;
  53     syncer::StringOrdinal page_ordinal;
  54     syncer::StringOrdinal item_ordinal;
  55
  56     std::string ToString() const;
  57   };
  58
  59   // Populates the model when |extension_system| is ready.
  60   AppListSyncableService(Profile* profile,
  61                          extensions::ExtensionSystem* extension_system);
  62
  63   virtual ~AppListSyncableService();
  64
  65   // Adds |item| to |sync_items_| and |model_|. If a sync item already exists,
  66   // updates the existing sync item instead.
  67   void AddItem(scoped_ptr<AppListItem> app_item);
  68
  69   // Removes sync item matching |id|.
  70   void RemoveItem(const std::string& id);
  71
  72   // Called when properties of an item may have changed, e.g. default/oem state.
  73   void UpdateItem(AppListItem* app_item);
  74
  75   // Returns the existing sync item matching |id| or NULL.
  76   const SyncItem* GetSyncItem(const std::string& id) const;
  77
  78   // Sets the name of the folder for OEM apps.
  79   void SetOemFolderName(const std::string& name);
  80
  81   Profile* profile() { return profile_; }
  82   AppListModel* model() { return model_.get(); }
  83   size_t GetNumSyncItemsForTest() const { return sync_items_.size(); }
  84   const std::string& GetOemFolderNameForTest() const {
  85     return oem_folder_name_;
  86   }
  87   void ResetDriveAppProviderForTest();
  88
  89   // syncer::SyncableService
  90   virtual syncer::SyncMergeResult MergeDataAndStartSyncing(
  91       syncer::ModelType type,
  92       const syncer::SyncDataList& initial_sync_data,
  93       scoped_ptr<syncer::SyncChangeProcessor> sync_processor,
  94       scoped_ptr<syncer::SyncErrorFactory> error_handler) OVERRIDE;
  95   virtual void StopSyncing(syncer::ModelType type) OVERRIDE;
  96   virtual syncer::SyncDataList GetAllSyncData(
  97       syncer::ModelType type) const OVERRIDE;
  98   virtual syncer::SyncError ProcessSyncChanges(
  99       const tracked_objects::Location& from_here,
 100       const syncer::SyncChangeList& change_list) OVERRIDE;
 101
 102  private:
 103   class ModelObserver;
 104   typedef std::map<std::string, SyncItem*> SyncItemMap;
 105
 106   // KeyedService
 107   virtual void Shutdown() OVERRIDE;
 108
 109   // content::NotificationObserver
 110   virtual void Observe(int type,
 111                        const content::NotificationSource& source,
 112                        const content::NotificationDetails& details) OVERRIDE;
 113
 114   // Builds the model once ExtensionService is ready.
 115   void BuildModel();
 116
 117   // Returns true if sync has restarted, otherwise runs |flare_|.
 118   bool SyncStarted();
 119
 120   // If |app_item| matches an existing sync item, returns it. Otherwise adds
 121   // |app_item| to |sync_items_| and returns the new item. If |app_item| is
 122   // invalid returns NULL.
 123   SyncItem* FindOrAddSyncItem(AppListItem* app_item);
 124
 125   // Creates a sync item for |app_item| and sends an ADD SyncChange event.
 126   SyncItem* CreateSyncItemFromAppItem(AppListItem* app_item);
 127
 128   // If a sync item for |app_item| already exists, update |app_item| from the
 129   // sync item, otherwise create a new sync item from |app_item|.
 130   void AddOrUpdateFromSyncItem(AppListItem* app_item);
 131
 132   // Either uninstalling a default app or remove the REMOVE_DEFAULT sync item.
 133   // Returns true if the app is removed. Otherwise deletes the existing sync
 134   // item and returns false.
 135   bool RemoveDefaultApp(AppListItem* item, SyncItem* sync_item);
 136
 137   // Deletes a sync item from |sync_items_| and sends a DELETE action.
 138   void DeleteSyncItem(SyncItem* sync_item);
 139
 140   // Updates existing entry in |sync_items_| from |app_item|.
 141   void UpdateSyncItem(AppListItem* app_item);
 142
 143   // Removes sync item matching |id|.
 144   void RemoveSyncItem(const std::string& id);
 145
 146   // Updates folder items that may get created during initial sync.
 147   void ResolveFolderPositions();
 148
 149   // Removes any empty SyncItem folders and deletes them from sync. Called
 150   // after a sync item is removed (which may result in an empty folder).
 151   void PruneEmptySyncFolders();
 152
 153   // Creates or updates a SyncItem from |specifics|. Returns true if a new item
 154   // was created.
 155   bool ProcessSyncItemSpecifics(const sync_pb::AppListSpecifics& specifics);
 156
 157   // Handles a newly created sync item (e.g. creates a new AppItem and adds it
 158   // to the model or uninstalls a deleted default item.
 159   void ProcessNewSyncItem(SyncItem* sync_item);
 160
 161   // Handles an existing sync item.
 162   void ProcessExistingSyncItem(SyncItem* sync_item);
 163
 164   // Updates |app_item| from |sync_item| (e.g. updates item positions).
 165   void UpdateAppItemFromSyncItem(const SyncItem* sync_item,
 166                                  AppListItem* app_item);
 167
 168   // Sends ADD or CHANGED for sync item.
 169   void SendSyncChange(SyncItem* sync_item,
 170                       syncer::SyncChange::SyncChangeType sync_change_type);
 171
 172   // Returns an existing SyncItem corresponding to |item_id| or NULL.
 173   SyncItem* FindSyncItem(const std::string& item_id);
 174
 175   // Creates a new sync item for |item_id|.
 176   SyncItem* CreateSyncItem(
 177       const std::string& item_id,
 178       sync_pb::AppListSpecifics::AppListItemType item_type);
 179
 180   // Deletes a SyncItem matching |specifics|.
 181   void DeleteSyncItemSpecifics(const sync_pb::AppListSpecifics& specifics);
 182
 183   // Creates the OEM folder and sets its name if necessary. Returns the OEM
 184   // folder id.
 185   std::string FindOrCreateOemFolder();
 186
 187   // Gets the location for the OEM folder. Called when the folder is first
 188   // created.
 189   syncer::StringOrdinal GetOemFolderPos();
 190
 191   // Returns true if an extension matching |id| exists and was installed by
 192   // an OEM (extension->was_installed_by_oem() is true).
 193   bool AppIsOem(const std::string& id);
 194
 195   Profile* profile_;
 196   extensions::ExtensionSystem* extension_system_;
 197   content::NotificationRegistrar registrar_;
 198   scoped_ptr<AppListModel> model_;
 199   scoped_ptr<ModelObserver> model_observer_;
 200   scoped_ptr<ExtensionAppModelBuilder> apps_builder_;
 201   scoped_ptr<syncer::SyncChangeProcessor> sync_processor_;
 202   scoped_ptr<syncer::SyncErrorFactory> sync_error_handler_;
 203   SyncItemMap sync_items_;
 204   syncer::SyncableService::StartSyncFlare flare_;
 205   bool initial_sync_data_processed_;
 206   bool first_app_list_sync_;
 207   std::string oem_folder_name_;
 208
 209   // Provides integration with Drive apps.
 210   scoped_ptr<DriveAppProvider> drive_app_provider_;
 211
 212   DISALLOW_COPY_AND_ASSIGN(AppListSyncableService);
 213 };
 214
 215 }  // namespace app_list
 216
 217 #endif  // CHROME_BROWSER_UI_APP_LIST_APP_LIST_SYNCABLE_SERVICE_H_