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      1 // Copyright (c) 2011 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 #include "chrome/browser/sync/glue/extension_model_associator.h"
      6 
      7 #include "base/logging.h"
      8 #include "chrome/browser/sync/engine/syncapi.h"
      9 #include "chrome/browser/sync/glue/extension_data.h"
     10 #include "chrome/browser/sync/glue/extension_sync_traits.h"
     11 #include "chrome/browser/sync/glue/extension_sync.h"
     12 #include "chrome/browser/sync/profile_sync_service.h"
     13 #include "chrome/browser/sync/protocol/extension_specifics.pb.h"
     14 #include "chrome/browser/sync/syncable/nigori_util.h"
     15 #include "content/browser/browser_thread.h"
     16 
     17 namespace browser_sync {
     18 
     19 ExtensionModelAssociator::ExtensionModelAssociator(
     20     const ExtensionSyncTraits& traits,
     21     ExtensionServiceInterface* extension_service,
     22     sync_api::UserShare* user_share)
     23     : traits_(traits), extension_service_(extension_service),
     24       user_share_(user_share) {
     25   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     26   DCHECK(extension_service_);
     27   DCHECK(user_share_);
     28 }
     29 
     30 ExtensionModelAssociator::~ExtensionModelAssociator() {
     31   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     32 }
     33 
     34 bool ExtensionModelAssociator::AssociateModels() {
     35   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     36   ExtensionDataMap extension_data_map;
     37   if (!SlurpExtensionData(
     38           traits_, *extension_service_, user_share_, &extension_data_map)) {
     39     return false;
     40   }
     41   if (!FlushExtensionData(
     42           traits_, extension_data_map, extension_service_, user_share_)) {
     43     return false;
     44   }
     45 
     46   return true;
     47 }
     48 
     49 bool ExtensionModelAssociator::DisassociateModels() {
     50   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     51   // Nothing to do.
     52   return true;
     53 }
     54 
     55 bool ExtensionModelAssociator::SyncModelHasUserCreatedNodes(bool* has_nodes) {
     56   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
     57   return RootNodeHasChildren(traits_.root_node_tag, user_share_, has_nodes);
     58 }
     59 
     60 bool ExtensionModelAssociator::CryptoReadyIfNecessary() {
     61   // We only access the cryptographer while holding a transaction.
     62   sync_api::ReadTransaction trans(user_share_);
     63   const syncable::ModelTypeSet& encrypted_types =
     64       GetEncryptedDataTypes(trans.GetWrappedTrans());
     65   return encrypted_types.count(traits_.model_type) == 0 ||
     66       trans.GetCryptographer()->is_ready();
     67 }
     68 
     69 }  // namespace browser_sync
     70