| // Copyright 2014 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 SYNC_NOTIFIER_GCM_NETWORK_CHANNEL_DELEGATE_H_ |
| #define SYNC_NOTIFIER_GCM_NETWORK_CHANNEL_DELEGATE_H_ |
| |
| #include <string> |
| |
| #include "base/callback.h" |
| #include "google_apis/gcm/gcm_client.h" |
| |
| class GoogleServiceAuthError; |
| |
| namespace syncer { |
| |
| // Delegate for GCMNetworkChannel. |
| // GCMNetworkChannel needs Register to register with GCM client and obtain gcm |
| // registration id. This id is used for building URL to cache invalidation |
| // endpoint. |
| // It needs RequestToken and InvalidateToken to get access token to include it |
| // in HTTP message to server. |
| // GCMNetworkChannel lives on IO thread therefore calls will be made on IO |
| // thread and callbacks should be invoked there as well. |
| class GCMNetworkChannelDelegate { |
| public: |
| typedef base::Callback<void(const GoogleServiceAuthError& error, |
| const std::string& token)> RequestTokenCallback; |
| typedef base::Callback<void(const std::string& registration_id, |
| gcm::GCMClient::Result result)> RegisterCallback; |
| typedef base::Callback<void(const std::string& message, |
| const std::string& echo_token)> MessageCallback; |
| |
| virtual ~GCMNetworkChannelDelegate() {} |
| |
| virtual void Initialize() = 0; |
| // Request access token. Callback should be called either with access token or |
| // error code. |
| virtual void RequestToken(RequestTokenCallback callback) = 0; |
| // Invalidate access token that was rejected by server. |
| virtual void InvalidateToken(const std::string& token) = 0; |
| |
| // Request registration_id from GCMService. Callback should be called with |
| // either registration id or error code. |
| virtual void Register(RegisterCallback callback) = 0; |
| // Provide callback for incoming messages from GCM. |
| virtual void SetMessageReceiver(MessageCallback callback) = 0; |
| }; |
| } // namespace syncer |
| |
| #endif // SYNC_NOTIFIER_GCM_NETWORK_CHANNEL_DELEGATE_H_ |