| // Copyright 2017 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 THIRD_PARTY_BLINK_PUBLIC_COMMON_MESSAGING_MESSAGE_PORT_CHANNEL_H_ |
| #define THIRD_PARTY_BLINK_PUBLIC_COMMON_MESSAGING_MESSAGE_PORT_CHANNEL_H_ |
| |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/memory/scoped_refptr.h" |
| #include "third_party/blink/public/common/common_export.h" |
| |
| namespace blink { |
| |
| class MessagePortDescriptor; |
| |
| // MessagePortChannel corresponds to a HTML MessagePort. It is a thin wrapper |
| // around a MessagePortDescriptor and used to provide methods for reading and |
| // writing messages. Currently all reading and writing is handled separately |
| // by other code, so MessagePortChannel is nothing other than a ref-counted |
| // holder of a MessagePortDescriptor, and is in the process of being removed. |
| class BLINK_COMMON_EXPORT MessagePortChannel { |
| public: |
| ~MessagePortChannel(); |
| MessagePortChannel(); |
| |
| // Shallow copy, resulting in multiple references to the same port. |
| MessagePortChannel(const MessagePortChannel& other); |
| MessagePortChannel& operator=(const MessagePortChannel& other); |
| |
| explicit MessagePortChannel(MessagePortDescriptor handle); |
| |
| const MessagePortDescriptor& GetHandle() const; |
| MessagePortDescriptor ReleaseHandle() const; |
| |
| static std::vector<MessagePortDescriptor> ReleaseHandles( |
| const std::vector<MessagePortChannel>& ports); |
| static std::vector<MessagePortChannel> CreateFromHandles( |
| std::vector<MessagePortDescriptor> handles); |
| |
| private: |
| class State; |
| mutable scoped_refptr<State> state_; |
| }; |
| |
| } // namespace blink |
| |
| #endif // THIRD_PARTY_BLINK_PUBLIC_COMMON_MESSAGING_MESSAGE_PORT_CHANNEL_H_ |