Add a private PPB_Talk_Private interface.

ppapi/proxy/ppb_talk_private_proxy.cc

+// 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.
+
+#include "ppapi/proxy/ppb_talk_private_proxy.h"
+
+#include "ipc/ipc_message_macros.h"
+#include "ppapi/c/pp_errors.h"
+#include "ppapi/proxy/plugin_dispatcher.h"
+#include "ppapi/proxy/plugin_globals.h"
+#include "ppapi/proxy/plugin_proxy_delegate.h"
+#include "ppapi/proxy/ppapi_messages.h"
+#include "ppapi/shared_impl/resource.h"
+#include "ppapi/shared_impl/tracked_callback.h"
+#include "ppapi/thunk/enter.h"
+#include "ppapi/thunk/ppb_talk_private_api.h"
+
+namespace ppapi {
+namespace proxy {
+
+namespace {
+
+class Talk : public Resource, public thunk::PPB_Talk_Private_API {
+ public:
+  Talk(PP_Instance instance) : Resource(OBJECT_IS_PROXY, instance) {
+  }
+
+  // Resource overrides.
+  thunk::PPB_Talk_Private_API* AsPPB_Talk_Private_API() { return this; }
+
+  // PPB_Talk_API implementation.
+  int32_t GetPermission(const PP_CompletionCallback& callback) {
+    if (TrackedCallback::IsPending(callback_))
+      return PP_ERROR_INPROGRESS;
+    PluginDispatcher* dispatcher = PluginDispatcher::GetForInstance(
+        pp_instance());
+    if (!dispatcher)
+      return PP_ERROR_FAILED;
+
+    callback_ = new TrackedCallback(this, callback);
+    dispatcher->Send(
+        new PpapiHostMsg_PPBTalk_GetPermission(
+            API_ID_PPB_TALK, pp_resource()));
+    return PP_OK_COMPLETIONPENDING;
+  }
+
+  void GotCompletion(int32_t result) {
+    TrackedCallback::ClearAndRun(&callback_, result);
+  }
+
+ private:
+  scoped_refptr<TrackedCallback> callback_;
+
+  DISALLOW_COPY_AND_ASSIGN(Talk);
+};
+
+PP_Resource Create(PP_Instance instance) {
+  return (new Talk(instance))->GetReference();
+}
+
+int32_t GetPermission(PP_Resource talk_resource,
+                      PP_CompletionCallback callback) {
+  ppapi::EnterResource<PPB_Talk_API> enter(resource, callback, true);
+  if (enter.failed())
+    return enter.retval();
+  return enter.SetResult(enter.object()->GetPermission(callback));
+}
+
+const PPB_Talk_Private_1_0 talk_interface = {
+  &Create,
+  &GetPermission
+};
+
+}  // namespace
+
+PPB_Talk_Private_Proxy::PPB_Talk_Private_Proxy(Dispatcher* dispatcher)
+    : InterfaceProxy(dispatcher) {
+}
+
+// static
+const PPB_Talk_Private_1_0* PPB_Talk_Private_Proxy::GetInterface() const {
+  return talk_interface;
+}
+
+bool PPB_Talk_Private_Proxy::OnMessageReceived(const IPC::Message& msg) {
+  bool handled = true;
+  IPC_BEGIN_MESSAGE_MAP(PPB_Talk_Private_Proxy, msg)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPBTalk_GetPermission,
+                        OnMsgGetPermission)
+    IPC_MESSAGE_HANDLER(PpapiMsg_PPBTalk_GetPermissionACK,
+                        OnMsgGetPermissionACK)
+    IPC_MESSAGE_UNHANDLED(handled = false);
+  IPC_END_MESSAGE_MAP();
+  return handled;
+}
+
+void PPB_Talk_Private_Proxy::OnMsgGetPermission(const HostResource& resource) {
+  // Add a completion callback factory and implement 
+  EnterHostFromHostResourceForceCallback<thunk::PPB_Talk_Private_API> enter(
+      &factory_,  // Need to add to this class
+      &OnGotPermission,
+      resource);
+  if (enter.succeeded())
+    // Copy another place that uses EnterHostFromHostResourceForceCallback
+}
+
+void PPB_Talk_Private_Proxy::OnMsgGetPermissionACK(const HostResource& resource,
+                                                   int32_t result) {
+  thunk::EnterPluginFromHostResource<thunk::PPB_Talk_Private_API> enter(
+      resource, false);
+  if (enter.succeeded())
+    static_cast<Talk*>(enter.object())->GotCompletion(result);
+}
+
+OnGotPermission(int32_t result, const HostResource& resource) {
+  // Forward to the plugin process
+  Send(new ...ACK(result));
+}
+}  // namespace proxy
+}  // namespace ppapi