| // 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 MOJO_PUBLIC_CPP_BINDINGS_FILTER_CHAIN_H_ |
| #define MOJO_PUBLIC_CPP_BINDINGS_FILTER_CHAIN_H_ |
| |
| #include <utility> |
| #include <vector> |
| |
| #include "base/compiler_specific.h" |
| #include "base/macros.h" |
| #include "base/memory/ptr_util.h" |
| #include "mojo/public/cpp/bindings/bindings_export.h" |
| #include "mojo/public/cpp/bindings/message.h" |
| |
| namespace mojo { |
| |
| class MOJO_CPP_BINDINGS_EXPORT FilterChain |
| : NON_EXPORTED_BASE(public MessageReceiver) { |
| public: |
| // Doesn't take ownership of |sink|. Therefore |sink| has to stay alive while |
| // this object is alive. |
| explicit FilterChain(MessageReceiver* sink = nullptr); |
| |
| FilterChain(FilterChain&& other); |
| FilterChain& operator=(FilterChain&& other); |
| ~FilterChain() override; |
| |
| template <typename FilterType, typename... Args> |
| inline void Append(Args&&... args); |
| |
| void Append(std::unique_ptr<MessageReceiver> filter); |
| |
| // Doesn't take ownership of |sink|. Therefore |sink| has to stay alive while |
| // this object is alive. |
| void SetSink(MessageReceiver* sink); |
| |
| // MessageReceiver: |
| bool Accept(Message* message) override; |
| |
| private: |
| std::vector<std::unique_ptr<MessageReceiver>> filters_; |
| |
| MessageReceiver* sink_; |
| |
| DISALLOW_COPY_AND_ASSIGN(FilterChain); |
| }; |
| |
| template <typename FilterType, typename... Args> |
| inline void FilterChain::Append(Args&&... args) { |
| Append(base::MakeUnique<FilterType>(std::forward<Args>(args)...)); |
| } |
| |
| template <> |
| inline void FilterChain::Append<PassThroughFilter>() { |
| } |
| |
| } // namespace mojo |
| |
| #endif // MOJO_PUBLIC_CPP_BINDINGS_FILTER_CHAIN_H_ |