| /* |
| * Copyright 2017 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef RTC_BASE_SIGSLOTREPEATER_H__ |
| #define RTC_BASE_SIGSLOTREPEATER_H__ |
| |
| // repeaters are both signals and slots, which are designed as intermediate |
| // pass-throughs for signals and slots which don't know about each other (for |
| // modularity or encapsulation). This eliminates the need to declare a signal |
| // handler whose sole purpose is to fire another signal. The repeater connects |
| // to the originating signal using the 'repeat' method. When the repeated |
| // signal fires, the repeater will also fire. |
| // |
| // TODO(deadbeef): Actually use this, after we decide on some style points on |
| // using signals, so it doesn't get deleted again. |
| |
| #include "rtc_base/third_party/sigslot/sigslot.h" |
| |
| namespace sigslot { |
| |
| template <class mt_policy, typename... Args> |
| class repeater_with_thread_policy |
| : public signal_with_thread_policy<mt_policy, Args...>, |
| public has_slots<mt_policy> { |
| private: |
| // These typedefs are just to make the code below more readable. Code using |
| // repeaters shouldn't need to reference these types directly. |
| typedef signal_with_thread_policy<mt_policy, Args...> base_type; |
| typedef repeater_with_thread_policy<mt_policy, Args...> this_type; |
| |
| public: |
| repeater_with_thread_policy() {} |
| repeater_with_thread_policy(const this_type& s) : base_type(s) {} |
| |
| void reemit(Args... args) { base_type::emit(args...); } |
| void repeat(base_type& s) { s.connect(this, &this_type::reemit); } |
| void stop(base_type& s) { s.disconnect(this); } |
| }; |
| |
| // Alias with default thread policy. Needed because both default arguments |
| // and variadic template arguments must go at the end of the list, so we |
| // can't have both at once. |
| template <typename... Args> |
| using repeater = |
| repeater_with_thread_policy<SIGSLOT_DEFAULT_MT_POLICY, Args...>; |
| |
| } // namespace sigslot |
| |
| #endif // RTC_BASE_SIGSLOTREPEATER_H__ |