Mojo: request/response bindings

mojo/examples/view_manager/view_manager.cc

 // Copyright 2014 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 <stdio.h>
 
 #include "base/logging.h"
 #include "base/memory/scoped_vector.h"
 #include "base/message_loop/message_loop.h"
 #include "mojo/examples/launcher/launcher.mojom.h"
@@ skipping 18 matching lines @@
 #else
 #define CDECL
 #define VIEW_MANAGER_EXPORT __attribute__((visibility("default")))
 #endif
 
 namespace mojo {
 namespace examples {
 
 class ViewImpl : public View {
  public:
-  explicit ViewImpl(ScopedViewClientHandle client_handle)
+  explicit ViewImpl(ScopedViewClientHandle handle)
       : id_(-1),
-        client_(client_handle.Pass()) {}
+        client_(handle.Pass(), this) {}
   virtual ~ViewImpl() {}
 
  private:
   // Overridden from View:
   virtual void SetId(int view_id) MOJO_OVERRIDE {
     id_ = view_id;
   }
-  virtual void GetId() MOJO_OVERRIDE {
-    client_->OnGotId(id_);
+  virtual void GetId(const mojo::Callback<void(int32_t)>& callback)
+      MOJO_OVERRIDE {
+    callback.Run(id_);
   }
 
   int id_;
   RemotePtr<ViewClient> client_;
 
   DISALLOW_COPY_AND_ASSIGN(ViewImpl);
 };
 
 class ViewManagerImpl : public Service<ViewManager, ViewManagerImpl>,
                         public NativeViewportClient,
                         public LauncherClient {
  public:
   explicit ViewManagerImpl() {
     InitNativeViewport();
   }
 
  private:
   // Overridden from ViewManager:
-  virtual void CreateView() MOJO_OVERRIDE {
+  virtual void CreateView(const Callback<void(ScopedViewHandle)>& callback)
+      MOJO_OVERRIDE {
     InterfacePipe<View> pipe;
     views_.push_back(new ViewImpl(pipe.handle_to_peer.Pass()));
-    client()->OnViewCreated(pipe.handle_to_self.Pass());
+    callback.Run(pipe.handle_to_self.Pass());
   }
 
   // Overridden from NativeViewportClient:
   virtual void OnCreated() OVERRIDE {
   }
   virtual void OnDestroyed() OVERRIDE {
     base::MessageLoop::current()->Quit();
   }
   virtual void OnBoundsChanged(const Rect& bounds) OVERRIDE {
     // TODO(beng):
@@ skipping 57 matching lines @@
 extern "C" VIEW_MANAGER_EXPORT MojoResult CDECL MojoMain(
     MojoHandle shell_handle) {
   base::MessageLoop loop;
   mojo::Application app(shell_handle);
   app.AddServiceFactory(
       new mojo::ServiceFactory<mojo::examples::ViewManagerImpl>);
   loop.Run();
 
   return MOJO_RESULT_OK;
 }