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      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 #include "chrome/browser/extensions/extension_sync_bundle.h"
      6 
      7 #include "base/location.h"
      8 #include "chrome/browser/extensions/extension_sync_service.h"
      9 #include "chrome/common/extensions/extension_set.h"
     10 #include "chrome/common/extensions/sync_helper.h"
     11 #include "extensions/common/extension.h"
     12 #include "sync/api/sync_change_processor.h"
     13 #include "sync/api/sync_error_factory.h"
     14 
     15 namespace extensions {
     16 
     17 ExtensionSyncBundle::ExtensionSyncBundle(
     18     ExtensionSyncService* extension_sync_service)
     19     : extension_sync_service_(extension_sync_service) {}
     20 
     21 ExtensionSyncBundle::~ExtensionSyncBundle() {}
     22 
     23 void ExtensionSyncBundle::SetupSync(
     24     syncer::SyncChangeProcessor* sync_processor,
     25     syncer::SyncErrorFactory* sync_error_factory,
     26     const syncer::SyncDataList& initial_sync_data) {
     27   sync_processor_.reset(sync_processor);
     28   sync_error_factory_.reset(sync_error_factory);
     29 
     30   for (syncer::SyncDataList::const_iterator i = initial_sync_data.begin();
     31        i != initial_sync_data.end();
     32        ++i) {
     33     ExtensionSyncData extension_sync_data(*i);
     34     AddExtension(extension_sync_data.id());
     35     extension_sync_service_->ProcessExtensionSyncData(extension_sync_data);
     36   }
     37 }
     38 
     39 void ExtensionSyncBundle::Reset() {
     40   sync_processor_.reset();
     41   sync_error_factory_.reset();
     42   synced_extensions_.clear();
     43   pending_sync_data_.clear();
     44 }
     45 
     46 syncer::SyncChange ExtensionSyncBundle::CreateSyncChangeToDelete(
     47     const Extension* extension) const {
     48   extensions::ExtensionSyncData sync_data =
     49       extension_sync_service_->GetExtensionSyncData(*extension);
     50   return sync_data.GetSyncChange(syncer::SyncChange::ACTION_DELETE);
     51 }
     52 
     53 void ExtensionSyncBundle::ProcessDeletion(
     54     std::string extension_id, const syncer::SyncChange& sync_change) {
     55   RemoveExtension(extension_id);
     56   sync_processor_->ProcessSyncChanges(FROM_HERE,
     57                                       syncer::SyncChangeList(1, sync_change));
     58 }
     59 
     60 syncer::SyncChange ExtensionSyncBundle::CreateSyncChange(
     61     const syncer::SyncData& sync_data) {
     62   if (HasExtensionId(sync_data.GetTag())) {
     63     return syncer::SyncChange(FROM_HERE,
     64                               syncer::SyncChange::ACTION_UPDATE,
     65                               sync_data);
     66   } else {
     67     AddExtension(sync_data.GetTag());
     68     return syncer::SyncChange(FROM_HERE,
     69                               syncer::SyncChange::ACTION_ADD,
     70                               sync_data);
     71   }
     72 }
     73 
     74 syncer::SyncDataList ExtensionSyncBundle::GetAllSyncData() const {
     75   std::vector<ExtensionSyncData> extension_sync_data =
     76       extension_sync_service_->GetExtensionSyncDataList();
     77   syncer::SyncDataList result(extension_sync_data.size());
     78   for (int i = 0; i < static_cast<int>(extension_sync_data.size()); ++i) {
     79     result[i] = extension_sync_data[i].GetSyncData();
     80   }
     81   return result;
     82 }
     83 
     84 void ExtensionSyncBundle::ProcessSyncChange(
     85     ExtensionSyncData extension_sync_data) {
     86   if (extension_sync_data.uninstalled())
     87     RemoveExtension(extension_sync_data.id());
     88   else
     89     AddExtension(extension_sync_data.id());
     90   extension_sync_service_->ProcessExtensionSyncData(extension_sync_data);
     91 }
     92 
     93 void ExtensionSyncBundle::ProcessSyncChangeList(
     94     syncer::SyncChangeList sync_change_list) {
     95   sync_processor_->ProcessSyncChanges(FROM_HERE, sync_change_list);
     96 }
     97 
     98 bool ExtensionSyncBundle::HasExtensionId(
     99     const std::string& id) const {
    100   return synced_extensions_.find(id) != synced_extensions_.end();
    101 }
    102 
    103 bool ExtensionSyncBundle::HasPendingExtensionId(
    104     const std::string& id) const {
    105   return pending_sync_data_.find(id) != pending_sync_data_.end();
    106 }
    107 
    108 void ExtensionSyncBundle::AddPendingExtension(
    109     const std::string& id,
    110     const ExtensionSyncData& extension_sync_data) {
    111   pending_sync_data_[id] = extension_sync_data;
    112 }
    113 
    114 bool ExtensionSyncBundle::IsSyncing() const {
    115   return sync_processor_ != NULL;
    116 }
    117 
    118 void ExtensionSyncBundle::SyncChangeIfNeeded(const Extension& extension) {
    119   ExtensionSyncData extension_sync_data =
    120       extension_sync_service_->GetExtensionSyncData(extension);
    121 
    122   syncer::SyncChangeList sync_change_list(1, extension_sync_data.GetSyncChange(
    123       HasExtensionId(extension.id()) ?
    124       syncer::SyncChange::ACTION_UPDATE : syncer::SyncChange::ACTION_ADD));
    125   sync_processor_->ProcessSyncChanges(FROM_HERE, sync_change_list);
    126   MarkPendingExtensionSynced(extension.id());
    127 }
    128 
    129 std::vector<ExtensionSyncData> ExtensionSyncBundle::GetPendingData() const {
    130   std::vector<ExtensionSyncData> pending_extensions;
    131   for (std::map<std::string, ExtensionSyncData>::const_iterator
    132            i = pending_sync_data_.begin();
    133        i != pending_sync_data_.end();
    134        ++i) {
    135     pending_extensions.push_back(i->second);
    136   }
    137 
    138   return pending_extensions;
    139 }
    140 
    141 void ExtensionSyncBundle::GetExtensionSyncDataListHelper(
    142     const ExtensionSet* extensions,
    143     std::vector<ExtensionSyncData>* sync_data_list) const {
    144   for (ExtensionSet::const_iterator it = extensions->begin();
    145        it != extensions->end(); ++it) {
    146     const Extension& extension = *it->get();
    147     // If we have pending extension data for this extension, then this
    148     // version is out of date.  We'll sync back the version we got from
    149     // sync.
    150     if (IsSyncing() && sync_helper::IsSyncableExtension(&extension) &&
    151         !HasPendingExtensionId(extension.id())) {
    152       sync_data_list->push_back(
    153           extension_sync_service_->GetExtensionSyncData(extension));
    154     }
    155   }
    156 }
    157 
    158 void ExtensionSyncBundle::AddExtension(const std::string& id) {
    159   synced_extensions_.insert(id);
    160 }
    161 
    162 void ExtensionSyncBundle::RemoveExtension(const std::string& id) {
    163   synced_extensions_.erase(id);
    164 }
    165 
    166 void ExtensionSyncBundle::MarkPendingExtensionSynced(const std::string& id) {
    167   pending_sync_data_.erase(id);
    168   synced_extensions_.insert(id);
    169 }
    170 
    171 }  // namespace extensions
    172