| // Copyright 2016 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_NTP_SNIPPETS_SESSIONS_TAB_DELEGATE_SYNC_ADAPTER_H_ |
| #define COMPONENTS_NTP_SNIPPETS_SESSIONS_TAB_DELEGATE_SYNC_ADAPTER_H_ |
| |
| #include <vector> |
| |
| #include "base/callback.h" |
| #include "base/callback_forward.h" |
| #include "base/macros.h" |
| #include "components/ntp_snippets/sessions/foreign_sessions_suggestions_provider.h" |
| #include "components/sync/driver/sync_service_observer.h" |
| |
| namespace syncer { |
| class SyncService; |
| } // namespace syncer |
| |
| namespace ntp_snippets { |
| |
| // Adapter that sits on top of SyncService and OpenTabsUIDelegate and provides |
| // simplified notifications and accessors for foreign tabs data. |
| class TabDelegateSyncAdapter : public syncer::SyncServiceObserver, |
| public ForeignSessionsProvider { |
| public: |
| explicit TabDelegateSyncAdapter(syncer::SyncService* sync_service); |
| ~TabDelegateSyncAdapter() override; |
| |
| // ForeignSessionsProvider implementation. |
| bool HasSessionsData() override; |
| std::vector<const sync_sessions::SyncedSession*> GetAllForeignSessions() |
| override; |
| void SubscribeForForeignTabChange( |
| const base::Closure& change_callback) override; |
| |
| private: |
| // syncer::SyncServiceObserver implementation. |
| void OnStateChanged(syncer::SyncService* sync) override; |
| void OnSyncConfigurationCompleted(syncer::SyncService* sync) override; |
| void OnForeignSessionUpdated(syncer::SyncService* sync) override; |
| |
| void InvokeCallback(); |
| |
| syncer::SyncService* sync_service_; |
| base::Closure change_callback_; |
| |
| // Represents whether there was session data the last time |change_callback_| |
| // was invoked. |
| bool had_session_data_ = false; |
| |
| DISALLOW_COPY_AND_ASSIGN(TabDelegateSyncAdapter); |
| }; |
| |
| } // namespace ntp_snippets |
| |
| #endif // COMPONENTS_NTP_SNIPPETS_SESSIONS_TAB_DELEGATE_SYNC_ADAPTER_H_ |