This implements the PPB_FileChooser resource as a new-style IPC-only resource.

Note that the new file name is file_chooser_resource in the proxy. I decided to drop the ppb_ prefix for the "new-style" files to help differentiate them, and also because it's technically wrong. PPB is an interface, and a resource "object" may support multiple interfaces. I think FooResource is easier to type and read.

Review URL: https://chromiumcodereview.appspot.com/10544089

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@146737 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 64 insertions, 0 deletions

diff --git a/ppapi/proxy/plugin_resource.h b/ppapi/proxy/plugin_resource.h
new file mode 100644
index 0000000..28d1274
--- /dev/null
+++ b/ppapi/proxy/plugin_resource.h
@@ -0,0 +1,64 @@
+// 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_PLUGIN_RESOURCE_H_
+#define PPAPI_PROXY_PLUGIN_RESOURCE_H_
+
+#include "base/compiler_specific.h"
+#include "ipc/ipc_sender.h"
+#include "ppapi/proxy/ppapi_proxy_export.h"
+#include "ppapi/shared_impl/resource.h"
+
+namespace IPC {
+class Message;
+}
+
+namespace ppapi {
+namespace proxy {
+
+class PluginDispatcher;
+
+class PPAPI_PROXY_EXPORT PluginResource : public Resource,
+                                          public IPC::Sender {
+ public:
+  PluginResource(IPC::Sender* sender,
+                 PP_Instance instance);
+  virtual ~PluginResource();
+
+  // IPC::Sender implementation.
+  virtual bool Send(IPC::Message* message) OVERRIDE;
+
+  bool sent_create_to_renderer() const { return sent_create_to_renderer_; }
+
+ protected:
+  // Sends a create message to the renderer for the current resource.
+  void SendCreateToRenderer(const IPC::Message& msg);
+
+  // Sends the given IPC message as a resource request to the host
+  // corresponding to this resource object and does not expect a reply.
+  void PostToRenderer(const IPC::Message& msg);
+
+  // Like PostToRenderer but expects a response.
+  //
+  // Returns the new request's sequence number which can be used to identify
+  // the callback. The host will reply and ppapi::Resource::OnReplyReceived
+  // will be called.
+  //
+  // Note that all integers (including 0 and -1) are valid request IDs.
+  int32_t CallRenderer(const IPC::Message& msg);
+
+ private:
+  IPC::Sender* sender_;
+
+  int32_t next_sequence_number_;
+
+  bool sent_create_to_renderer_;
+
+  DISALLOW_COPY_AND_ASSIGN(PluginResource);
+};
+
+}  // namespace proxy
+}  // namespace ppapi
+
+#endif  // PPAPI_PROXY_PLUGIN_RESOURCE_H_