src/chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.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_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 "components/browser_context_keyed_service/browser_context_keyed_service.h"
  14
  15 class Profile;
  16
  17 namespace sync_file_system {
  18 class SyncFileSystemService;
  19 }
  20
  21 namespace extensions {
  22
  23 // Observes changes in SyncFileSystem and relays events to JS Extension API.
  24 class ExtensionSyncEventObserver
  25     : public sync_file_system::SyncEventObserver,
  26       public BrowserContextKeyedService {
  27  public:
  28   explicit ExtensionSyncEventObserver(Profile* profile);
  29   virtual ~ExtensionSyncEventObserver();
  30
  31   void InitializeForService(
  32       sync_file_system::SyncFileSystemService* sync_service);
  33
  34   // BrowserContextKeyedService override.
  35   virtual void Shutdown() OVERRIDE;
  36
  37   // sync_file_system::SyncEventObserver interface implementation.
  38   virtual void OnSyncStateUpdated(
  39       const GURL& app_origin,
  40       sync_file_system::SyncServiceState state,
  41       const std::string& description) OVERRIDE;
  42
  43   virtual void OnFileSynced(
  44       const fileapi::FileSystemURL& url,
  45       sync_file_system::SyncFileStatus status,
  46       sync_file_system::SyncAction action,
  47       sync_file_system::SyncDirection direction) OVERRIDE;
  48
  49  private:
  50   // Returns an empty string if the extension |app_origin| cannot be found
  51   // in the installed extension list.
  52   std::string GetExtensionId(const GURL& app_origin);
  53
  54   Profile* profile_;
  55
  56   // Not owned. If not null, then this is registered to SyncFileSystemService.
  57   sync_file_system::SyncFileSystemService* sync_service_;
  58
  59   void BroadcastOrDispatchEvent(const GURL& app_origin,
  60                                 const std::string& event_name,
  61                                 scoped_ptr<base::ListValue> value);
  62
  63   DISALLOW_COPY_AND_ASSIGN(ExtensionSyncEventObserver);
  64 };
  65
  66 }  // namespace extensions
  67
  68 #endif  // CHROME_BROWSER_EXTENSIONS_API_SYNC_FILE_SYSTEM_EXTENSION_SYNC_EVENT_OBSERVER_H_