1 // Copyright 2014 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 COMPONENTS_SUGGESTIONS_SUGGESTIONS_UTILS_H_ 6 #define COMPONENTS_SUGGESTIONS_SUGGESTIONS_UTILS_H_ 7 8 namespace suggestions { 9 10 // Establishes the different sync states that users of SuggestionsService can 11 // specify. There are three different concepts in the sync service: initialized, 12 // sync enabled and history sync enabled. 13 enum SyncState { 14 // State: Sync service is not initialized, yet not disabled. History sync 15 // state is unknown (since not initialized). 16 // Behavior: Does not issue a server request, but serves from cache if 17 // available. 18 NOT_INITIALIZED_ENABLED, 19 20 // State: Sync service is initialized, sync is enabled and history sync is 21 // enabled. 22 // Behavior: Update suggestions from the server. Serve from cache on timeout. 23 INITIALIZED_ENABLED_HISTORY, 24 25 // State: Sync service is disabled or history sync is disabled. 26 // Behavior: Do not issue a server request. Clear the cache. Serve empty 27 // suggestions. 28 SYNC_OR_HISTORY_SYNC_DISABLED, 29 }; 30 31 // Users of SuggestionsService should always use this function to get SyncState. 32 SyncState GetSyncState(bool sync_enabled, 33 bool sync_initialized, 34 bool history_sync_enabled); 35 36 } // namespace suggestions 37 38 #endif // COMPONENTS_SUGGESTIONS_SUGGESTIONS_UTILS_H_ 39
