Implement Pepper proxy for PPB_DirectoryReader

content/renderer/pepper/pepper_directory_reader_host.h

+// Copyright (c) 2013 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_RENDERER_PEPPER_PEPPER_DIRECTORY_READER_HOST_H_
+#define CONTENT_RENDERER_PEPPER_PEPPER_DIRECTORY_READER_HOST_H_
+
+#include <vector>
+
+#include "base/basictypes.h"
+#include "content/common/content_export.h"
+#include "ipc/ipc_message.h"
+#include "ppapi/host/host_message_context.h"
+#include "ppapi/host/resource_host.h"
+#include "ppapi/proxy/enter_proxy.h"
+#include "ppapi/proxy/resource_message_params.h"
+#include "ppapi/shared_impl/ppb_file_ref_shared.h"
+#include "ppapi/thunk/resource_creation_api.h"
+#include "webkit/plugins/ppapi/ppb_directory_reader_impl.h"
+
+namespace content {
+
+class RendererPpapiHost;
+
+class CONTENT_EXPORT PepperDirectoryReaderHost
+    : public ppapi::host::ResourceHost,
+      public base::SupportsWeakPtr<PepperDirectoryReaderHost> {
+ public:
+  PepperDirectoryReaderHost(RendererPpapiHost* host,
+                            PP_Instance instance,
+                            PP_Resource resource);
+  virtual ~PepperDirectoryReaderHost();
+
+  virtual int32_t OnResourceMessageReceived(
+      const IPC::Message& msg,
+      ppapi::host::HostMessageContext* context) OVERRIDE;
+
+ private:
+  static void OnGetNextEntryCallback(void* data, int32_t result);
+  int32_t OnGetNextEntry(ppapi::host::HostMessageContext* host_context,
+                         ppapi::HostResource resource);
+  int32_t GetNextEntry();
+  void SendGetNextEntryReply(int32_t result);
+  void PushEntry(const PP_DirectoryEntry_Dev& entry);
+
+  PP_Instance instance_;
+  PP_DirectoryEntry_Dev entry_;
+  ppapi::HostResource host_resource_;
+
+  PP_Resource directory_reader_;
+
+  ppapi::host::ReplyMessageContext reply_context_;
+  std::vector<ppapi::PPB_FileRef_CreateInfo> host_resources_;
+  std::vector<PP_FileType> file_types_;
+
+  DISALLOW_COPY_AND_ASSIGN(PepperDirectoryReaderHost);
+};
+
+}
+
+#endif  // CONTENT_RENDERER_PEPPER_PEPPER_DIRECTORY_READER_HOST_H_