| // Copyright 2018 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 OSP_IMPL_SERVICE_PUBLISHER_IMPL_H_ |
| #define OSP_IMPL_SERVICE_PUBLISHER_IMPL_H_ |
| |
| #include "osp/impl/with_destruction_callback.h" |
| #include "osp/public/service_publisher.h" |
| #include "platform/base/macros.h" |
| |
| namespace openscreen { |
| namespace osp { |
| |
| class ServicePublisherImpl final : public ServicePublisher, |
| public WithDestructionCallback { |
| public: |
| class Delegate { |
| public: |
| Delegate(); |
| virtual ~Delegate(); |
| |
| void SetPublisherImpl(ServicePublisherImpl* publisher); |
| |
| virtual void StartPublisher() = 0; |
| virtual void StartAndSuspendPublisher() = 0; |
| virtual void StopPublisher() = 0; |
| virtual void SuspendPublisher() = 0; |
| virtual void ResumePublisher() = 0; |
| |
| protected: |
| void SetState(State state) { publisher_->SetState(state); } |
| |
| ServicePublisherImpl* publisher_ = nullptr; |
| }; |
| |
| // |observer| is optional. If it is provided, it will receive appropriate |
| // notifications about this ServicePublisher. |delegate| is required and |
| // is used to implement state transitions. |
| ServicePublisherImpl(Observer* observer, Delegate* delegate); |
| ~ServicePublisherImpl() override; |
| |
| // ServicePublisher overrides. |
| bool Start() override; |
| bool StartAndSuspend() override; |
| bool Stop() override; |
| bool Suspend() override; |
| bool Resume() override; |
| |
| private: |
| // Called by |delegate_| to transition the state machine (except kStarting and |
| // kStopping which are done automatically). |
| void SetState(State state); |
| |
| // Notifies |observer_| if the transition to |state_| is one that is watched |
| // by the observer interface. |
| void MaybeNotifyObserver(); |
| |
| Delegate* const delegate_; |
| |
| OSP_DISALLOW_COPY_AND_ASSIGN(ServicePublisherImpl); |
| }; |
| |
| } // namespace osp |
| } // namespace openscreen |
| |
| #endif // OSP_IMPL_SERVICE_PUBLISHER_IMPL_H_ |