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      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_EXTENSIONS_PENDING_ENABLES_H_
      6 #define CHROME_BROWSER_EXTENSIONS_PENDING_ENABLES_H_
      7 
      8 #include <set>
      9 
     10 // Included for syncer::ModelType, which is in
     11 // sync/internal_api/public/base/model_type.h but that is disallowed by
     12 // chrome/browser/DEPS.
     13 #include "sync/api/syncable_service.h"
     14 
     15 class ExtensionService;
     16 class ProfileSyncService;
     17 
     18 namespace browser_sync {
     19 class SyncPrefs;
     20 }
     21 
     22 namespace extensions {
     23 
     24 class SyncBundle;
     25 
     26 // A pending enable is when an app or extension is enabled locally before sync
     27 // has started. We track these to prevent sync data arriving and clobbering
     28 // local state, and also to ensure that these early enables get synced to the
     29 // server when sync does start.
     30 class PendingEnables {
     31  public:
     32   PendingEnables(scoped_ptr<browser_sync::SyncPrefs> sync_prefs,
     33                  SyncBundle* sync_bundle,
     34                  syncer::ModelType enable_type);
     35   ~PendingEnables();
     36 
     37   // Called when an extension is enabled / disabled locally.
     38   // These will check the sync state and figure out whether the change
     39   // needs to be remembered for syncing when syncing starts.
     40   void OnExtensionEnabled(const std::string& extension_id);
     41   void OnExtensionDisabled(const std::string& extension_id);
     42 
     43   // Called when |sync_bundle_| is ready to accept sync changes.
     44   // Uses |service| to look up extensions from extension ids.
     45   void OnSyncStarted(ExtensionService* service);
     46 
     47   // Whether |extension_id| has a pending enable.
     48   bool Contains(const std::string& extension_id) const;
     49 
     50  private:
     51   bool IsSyncEnabled();
     52   bool IsWaitingForSync();
     53 
     54   scoped_ptr<browser_sync::SyncPrefs> sync_prefs_;
     55   SyncBundle* sync_bundle_;
     56   syncer::ModelType enable_type_;
     57   std::set<std::string> ids_;
     58 
     59   bool is_sync_enabled_for_test_;
     60 
     61   DISALLOW_COPY_AND_ASSIGN(PendingEnables);
     62 };
     63 
     64 }  // namespace extensions
     65 
     66 #endif  // CHROME_BROWSER_EXTENSIONS_PENDING_ENABLES_H_
     67