Implement the file chooser as a new resource "host"

ppapi/proxy/ppb_file_chooser_proxy.h

-// Copyright (c) 2012 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 PPAPI_PROXY_PPB_FILE_CHOOSER_PROXY_H_
-#define PPAPI_PROXY_PPB_FILE_CHOOSER_PROXY_H_
-
-#include <string>
-#include <vector>
-
-#include "base/basictypes.h"
-#include "ppapi/c/pp_instance.h"
-#include "ppapi/proxy/interface_proxy.h"
-#include "ppapi/proxy/proxy_array_output.h"
-#include "ppapi/proxy/proxy_non_thread_safe_ref_count.h"
-#include "ppapi/proxy/serialized_var.h"
-#include "ppapi/thunk/ppb_file_chooser_api.h"
-#include "ppapi/cpp/output_traits.h"
-#include "ppapi/utility/completion_callback_factory.h"
-
-namespace ppapi {
-
-class HostResource;
-struct PPB_FileRef_CreateInfo;
-
-namespace proxy {
-
-class PPB_FileChooser_Proxy : public InterfaceProxy {
- public:
-  explicit PPB_FileChooser_Proxy(Dispatcher* dispatcher);
-  virtual ~PPB_FileChooser_Proxy();
-
-  static PP_Resource CreateProxyResource(
-      PP_Instance instance,
-      PP_FileChooserMode_Dev mode,
-      const char* accept_types);
-
-  // InterfaceProxy implementation.
-  virtual bool OnMessageReceived(const IPC::Message& msg);
-
-  static const ApiID kApiID = API_ID_PPB_FILE_CHOOSER;
-
- private:
-  // Plugin -> host message handlers.
-  void OnMsgCreate(PP_Instance instance,
-                   int mode,
-                   std::string accept_types,
-                   ppapi::HostResource* result);
-  void OnMsgShow(const ppapi::HostResource& chooser,
-                 PP_Bool save_as,
-                 SerializedVarReceiveInput suggested_file_name,
-                 bool require_user_gesture);
-
-  // Host -> plugin message handlers.
-  void OnMsgChooseComplete(
-      const ppapi::HostResource& chooser,
-      int32_t result_code,
-      const std::vector<PPB_FileRef_CreateInfo>& chosen_files);
-
-  // Called when the show is complete in the host. This will notify the plugin
-  // via IPC and OnMsgChooseComplete will be called there.
-  void OnShowCallback(
-      int32_t result,
-      scoped_refptr<RefCountedArrayOutputAdapter<PP_Resource> > output,
-      HostResource chooser);
-
-  pp::CompletionCallbackFactory<PPB_FileChooser_Proxy,
-                                ProxyNonThreadSafeRefCount> callback_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(PPB_FileChooser_Proxy);
-};
-
-}  // namespace proxy
-}  // namespace ppapi
-
-#endif  // PPAPI_PROXY_PPB_FILE_CHOOSER_PROXY_H_