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_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_ 6 #define CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_ 7 8 #include "base/basictypes.h" 9 #include "base/compiler_specific.h" 10 #include "base/memory/scoped_ptr.h" 11 #include "base/values.h" 12 #include "chrome/browser/sync_file_system/sync_event_observer.h" 13 #include "extensions/browser/browser_context_keyed_api_factory.h" 14 15 namespace content { 16 class BrowserContext; 17 } 18 19 namespace sync_file_system { 20 class SyncFileSystemService; 21 } 22 23 namespace extensions { 24 25 // Observes changes in SyncFileSystem and relays events to JS Extension API. 26 class ExtensionSyncEventObserver : public sync_file_system::SyncEventObserver, 27 public BrowserContextKeyedAPI { 28 public: 29 static BrowserContextKeyedAPIFactory<ExtensionSyncEventObserver>* 30 GetFactoryInstance(); 31 32 explicit ExtensionSyncEventObserver(content::BrowserContext* context); 33 virtual ~ExtensionSyncEventObserver(); 34 35 void InitializeForService( 36 sync_file_system::SyncFileSystemService* sync_service); 37 38 // KeyedService override. 39 virtual void Shutdown() OVERRIDE; 40 41 // sync_file_system::SyncEventObserver interface implementation. 42 virtual void OnSyncStateUpdated( 43 const GURL& app_origin, 44 sync_file_system::SyncServiceState state, 45 const std::string& description) OVERRIDE; 46 47 virtual void OnFileSynced( 48 const fileapi::FileSystemURL& url, 49 sync_file_system::SyncFileStatus status, 50 sync_file_system::SyncAction action, 51 sync_file_system::SyncDirection direction) OVERRIDE; 52 53 private: 54 friend class BrowserContextKeyedAPIFactory<ExtensionSyncEventObserver>; 55 56 // Returns an empty string if the extension |app_origin| cannot be found 57 // in the installed extension list. 58 std::string GetExtensionId(const GURL& app_origin); 59 60 // BrowserContextKeyedAPI implementation. service_name()61 static const char* service_name() { return "ExtensionSyncEventObserver"; } 62 static const bool kServiceIsCreatedWithBrowserContext = false; 63 64 content::BrowserContext* browser_context_; 65 66 // Not owned. If not null, then this is registered to SyncFileSystemService. 67 sync_file_system::SyncFileSystemService* sync_service_; 68 69 void BroadcastOrDispatchEvent(const GURL& app_origin, 70 const std::string& event_name, 71 scoped_ptr<base::ListValue> value); 72 73 DISALLOW_COPY_AND_ASSIGN(ExtensionSyncEventObserver); 74 }; 75 76 template <> 77 void BrowserContextKeyedAPIFactory< 78 ExtensionSyncEventObserver>::DeclareFactoryDependencies(); 79 80 } // namespace extensions 81 82 #endif // CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_ 83