| OLD | NEW |
| 1 /* | 1 /* |
| 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. | 2 * Copyright 2004 The WebRTC Project Authors. All rights reserved. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
| 5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
| 6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
| 7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
| 8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
| 9 */ | 9 */ |
| 10 | 10 |
| 11 #ifndef WEBRTC_BASE_MESSAGEHANDLER_H_ | 11 #ifndef WEBRTC_BASE_MESSAGEHANDLER_H_ |
| 12 #define WEBRTC_BASE_MESSAGEHANDLER_H_ | 12 #define WEBRTC_BASE_MESSAGEHANDLER_H_ |
| 13 | 13 |
| 14 #include <memory> | |
| 15 #include <utility> | |
| 16 | 14 |
| 17 #include "webrtc/base/constructormagic.h" | 15 // This header is deprecated and is just left here temporarily during |
| 18 | 16 // refactoring. See https://bugs.webrtc.org/7634 for more details. |
| 19 namespace rtc { | 17 #include "webrtc/rtc_base/messagehandler.h" |
| 20 | |
| 21 struct Message; | |
| 22 | |
| 23 // Messages get dispatched to a MessageHandler | |
| 24 | |
| 25 class MessageHandler { | |
| 26 public: | |
| 27 virtual ~MessageHandler(); | |
| 28 virtual void OnMessage(Message* msg) = 0; | |
| 29 | |
| 30 protected: | |
| 31 MessageHandler() {} | |
| 32 | |
| 33 private: | |
| 34 RTC_DISALLOW_COPY_AND_ASSIGN(MessageHandler); | |
| 35 }; | |
| 36 | |
| 37 // Helper class to facilitate executing a functor on a thread. | |
| 38 template <class ReturnT, class FunctorT> | |
| 39 class FunctorMessageHandler : public MessageHandler { | |
| 40 public: | |
| 41 explicit FunctorMessageHandler(const FunctorT& functor) | |
| 42 : functor_(functor) {} | |
| 43 virtual void OnMessage(Message* msg) { | |
| 44 result_ = functor_(); | |
| 45 } | |
| 46 const ReturnT& result() const { return result_; } | |
| 47 | |
| 48 // Returns moved result. Should not call result() or MoveResult() again | |
| 49 // after this. | |
| 50 ReturnT MoveResult() { return std::move(result_); } | |
| 51 | |
| 52 private: | |
| 53 FunctorT functor_; | |
| 54 ReturnT result_; | |
| 55 }; | |
| 56 | |
| 57 // Specialization for ReturnT of void. | |
| 58 template <class FunctorT> | |
| 59 class FunctorMessageHandler<void, FunctorT> : public MessageHandler { | |
| 60 public: | |
| 61 explicit FunctorMessageHandler(const FunctorT& functor) | |
| 62 : functor_(functor) {} | |
| 63 virtual void OnMessage(Message* msg) { | |
| 64 functor_(); | |
| 65 } | |
| 66 void result() const {} | |
| 67 void MoveResult() {} | |
| 68 | |
| 69 private: | |
| 70 FunctorT functor_; | |
| 71 }; | |
| 72 | |
| 73 } // namespace rtc | |
| 74 | 18 |
| 75 #endif // WEBRTC_BASE_MESSAGEHANDLER_H_ | 19 #endif // WEBRTC_BASE_MESSAGEHANDLER_H_ |
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