content/child/web_data_consumer_handle_impl.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 CONTENT_CHILD_WEB_DATA_CONSUMER_HANDLE_IMPL_H_
#define CONTENT_CHILD_WEB_DATA_CONSUMER_HANDLE_IMPL_H_

#include "base/memory/scoped_ptr.h"
#include "content/common/content_export.h"
#include "mojo/common/handle_watcher.h"
#include "third_party/WebKit/public/platform/WebDataConsumerHandle.h"
#include "third_party/mojo/src/mojo/public/cpp/system/data_pipe.h"

namespace content {

class CONTENT_EXPORT WebDataConsumerHandleImpl final
    : public NON_EXPORTED_BASE(blink::WebDataConsumerHandle) {
  typedef mojo::ScopedDataPipeConsumerHandle Handle;
 public:
  explicit WebDataConsumerHandleImpl(Handle handle);
  virtual ~WebDataConsumerHandleImpl();

  virtual Result read(void* data, size_t size, Flags flags, size_t* readSize);
  virtual Result beginRead(const void** buffer, Flags flags, size_t* available);
  virtual Result endRead(size_t readSize);
  virtual void registerClient(Client* client);
  virtual void unregisterClient();

 private:
  Result HandleReadResult(MojoResult);
  void OnHandleGotReadable(MojoResult);

  Handle handle_;
  Client* client_;
  mojo::common::HandleWatcher handle_watcher_;
};

}  // namespace content

#endif  // CONTENT_CHILD_WEB_DATA_CONSUMER_HANDLE_IMPL_H_