third_party/WebKit/Source/web/WebPepperSocketChannelClientProxy.h

// 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 WebPepperSocketChannelClientProxy_h
#define WebPepperSocketChannelClientProxy_h

#include "modules/websockets/WebSocketChannelClient.h"
#include "platform/heap/Handle.h"
#include "web/WebPepperSocketImpl.h"
#include "wtf/Vector.h"
#include "wtf/text/WTFString.h"
#include <memory>
#include <stdint.h>

namespace blink {

// Ideally we want to simply make WebPepperSocketImpl inherit from
// WebPepperSocketChannelClient, but we cannot do that because
// WebSocketChannelClient needs to be on Oilpan's heap whereas
// WebPepperSocketImpl cannot be on Oilpan's heap. Thus we need to introduce a
// proxy class to decouple WebPepperSocketImpl from WebSocketChannelClient.
class WebPepperSocketChannelClientProxy final
    : public GarbageCollectedFinalized<WebPepperSocketChannelClientProxy>,
      public WebSocketChannelClient {
  USING_GARBAGE_COLLECTED_MIXIN(WebPepperSocketChannelClientProxy)
 public:
  static WebPepperSocketChannelClientProxy* create(WebPepperSocketImpl* impl) {
    return new WebPepperSocketChannelClientProxy(impl);
  }

  void didConnect(const String& subprotocol,
                  const String& extensions) override {
    m_impl->didConnect(subprotocol, extensions);
  }
  void didReceiveTextMessage(const String& payload) override {
    m_impl->didReceiveTextMessage(payload);
  }
  void didReceiveBinaryMessage(std::unique_ptr<Vector<char>> payload) override {
    m_impl->didReceiveBinaryMessage(std::move(payload));
  }
  void didError() override { m_impl->didError(); }
  void didConsumeBufferedAmount(uint64_t consumed) override {
    m_impl->didConsumeBufferedAmount(consumed);
  }
  void didStartClosingHandshake() override {
    m_impl->didStartClosingHandshake();
  }
  void didClose(ClosingHandshakeCompletionStatus status,
                unsigned short code,
                const String& reason) override {
    WebPepperSocketImpl* impl = m_impl;
    m_impl = nullptr;
    impl->didClose(status, code, reason);
  }

  DEFINE_INLINE_VIRTUAL_TRACE() { WebSocketChannelClient::trace(visitor); }

 private:
  explicit WebPepperSocketChannelClientProxy(WebPepperSocketImpl* impl)
      : m_impl(impl) {}

  WebPepperSocketImpl* m_impl;
};

}  // namespace blink

#endif  // WebPepperSocketChannelClientProxy_h