content/child/web_data_consumer_handle_impl.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_CHILD_WEB_DATA_CONSUMER_HANDLE_IMPL_H_
   6 #define CONTENT_CHILD_WEB_DATA_CONSUMER_HANDLE_IMPL_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "content/common/content_export.h"
  10 #include "mojo/common/handle_watcher.h"
  11 #include "third_party/WebKit/public/platform/WebDataConsumerHandle.h"
  12 #include "third_party/mojo/src/mojo/public/cpp/system/data_pipe.h"
  13
  14 namespace content {
  15
  16 class CONTENT_EXPORT WebDataConsumerHandleImpl final
  17     : public NON_EXPORTED_BASE(blink::WebDataConsumerHandle) {
  18   typedef mojo::ScopedDataPipeConsumerHandle Handle;
  19  public:
  20   explicit WebDataConsumerHandleImpl(Handle handle);
  21   virtual ~WebDataConsumerHandleImpl();
  22
  23   virtual Result read(void* data, size_t size, Flags flags, size_t* readSize);
  24   virtual Result beginRead(const void** buffer, Flags flags, size_t* available);
  25   virtual Result endRead(size_t readSize);
  26   virtual void registerClient(Client* client);
  27   virtual void unregisterClient();
  28
  29  private:
  30   Result HandleReadResult(MojoResult);
  31   void OnHandleGotReadable(MojoResult);
  32
  33   Handle handle_;
  34   Client* client_;
  35   mojo::common::HandleWatcher handle_watcher_;
  36 };
  37
  38 }  // namespace content
  39
  40 #endif  // CONTENT_CHILD_WEB_DATA_CONSUMER_HANDLE_IMPL_H_