view manager

mojo/examples/view_manager/view_manager.cc

Index: mojo/examples/view_manager/view_manager.cc
diff --git a/mojo/examples/view_manager/view_manager.cc b/mojo/examples/view_manager/view_manager.cc
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+++ b/mojo/examples/view_manager/view_manager.cc
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+// 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/public/bindings/allocation_scope.h"
+#include "mojo/public/bindings/remote_ptr.h"
+#include "mojo/public/system/core.h"
+#include "mojo/public/system/macros.h"
+#include "mojo/services/native_viewport/geometry_conversions.h"
+#include "mojom/launcher.h"
+#include "mojom/native_viewport.h"
+#include "mojom/shell.h"
+#include "mojom/view_manager.h"
+#include "ui/events/event_constants.h"
+#include "ui/events/keycodes/keyboard_codes.h"
+#include "ui/gfx/rect.h"
+
+#if defined(WIN32)
+#if !defined(CDECL)
+#define CDECL __cdecl)
+#endif
+#define VIEW_MANAGER_EXPORT __declspec(dllexport)
+#else
+#define CDECL
+#define VIEW_MANAGER_EXPORT __attribute__((visibility("default")))
+#endif
+
+namespace mojo {
+namespace examples {
+
+// Convenience interface to connect to a service. Necessary because all code for
+// this app lives in one .cc file.
+class Connector {
+ public:
+  virtual void Connect(const String& url,
+                       ScopedMessagePipeHandle client_handle) = 0;
+
+ protected:
+  virtual ~Connector() {}
+};
+
+class NativeViewportClientImpl : public NativeViewportClient,
+                                 public LauncherClient {
+ public:
+  explicit NativeViewportClientImpl(Connector* connector)
+      : connector_(connector) {
+    AllocationScope scope;
+    ScopedMessagePipeHandle client_handle, native_viewport_handle;
+    CreateMessagePipe(&client_handle, &native_viewport_handle);
+    connector_->Connect("mojo:mojo_native_viewport_service",
+                        client_handle.Pass());
+    native_viewport_.reset(native_viewport_handle.Pass(), this);
+
+    native_viewport_->Create(gfx::Rect(50, 50, 800, 600));
+    native_viewport_->Show();
+  }
+  virtual ~NativeViewportClientImpl() {}
+
+ private:
+  // Overridden from NativeViewportClient:
+  virtual void OnCreated() OVERRIDE {
+  }
+  virtual void OnDestroyed() OVERRIDE {
+    base::MessageLoop::current()->Quit();
+  }
+  virtual void OnBoundsChanged(const Rect& bounds) OVERRIDE {
+    // TODO(beng):
+  }
+  virtual void OnEvent(const Event& event) OVERRIDE {
+    if (!event.location().is_null())
+      native_viewport_->AckEvent(event);
+    if (event.action() == ui::ET_KEY_RELEASED) {
+      if (event.key_data().key_code() == ui::VKEY_L &&
+          (event.flags() & ui::EF_CONTROL_DOWN)) {
+        InitLauncher();
+        launcher_->Show();
+      }
+    }
+  }
+
+  // Overridden from LauncherClient:
+  virtual void OnURLEntered(const mojo::String& url) OVERRIDE {
+    std::string url_spec = url.To<std::string>();
+    printf("Received URL from launcher app: %s\n", url_spec.c_str());
+    launcher_->Hide();
+  }
+
+  void InitLauncher() {
+    if (!launcher_.is_null())
+      return;
+    AllocationScope scope;
+    ScopedMessagePipeHandle client_handle, native_viewport_handle;
+    CreateMessagePipe(&client_handle, &native_viewport_handle);
+    connector_->Connect("mojo:mojo_launcher", client_handle.Pass());
+    launcher_.reset(native_viewport_handle.Pass(), this);
+  }
+
+  Connector* connector_;
+  RemotePtr<NativeViewport> native_viewport_;
+  RemotePtr<Launcher> launcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(NativeViewportClientImpl);
+};
+
+class ViewImpl : public View {
+ public:
+  explicit ViewImpl(ScopedMessagePipeHandle handle)
+      : id_(-1),
+        client_(handle.Pass()) {}
+
+ private:
+  // Overridden from View:
+  virtual void SetId(int view_id) MOJO_OVERRIDE {
+    id_ = view_id;
+  }
+  virtual void GetId() MOJO_OVERRIDE {
+    client_->OnGotId(id_);
+  }
+
+  int id_;
+  RemotePtr<ViewClient> client_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewImpl);
+};
+
+class ViewManagerImpl : public ViewManager {
+ public:
+  explicit ViewManagerImpl(ScopedMessagePipeHandle handle)
+      : client_(handle.Pass()) {
+  }
+  virtual ~ViewManagerImpl() {}
+
+ private:
+  // Overridden from ViewManager:
+  virtual void CreateView() MOJO_OVERRIDE {
+    ScopedMessagePipeHandle server_handle, client_handle;
+    CreateMessagePipe(&server_handle, &client_handle);
+    views_.push_back(new ViewImpl(server_handle.Pass()));
+    client_->OnViewCreated(client_handle.Pass());
+  }
+
+  RemotePtr<ViewManagerClient> client_;
+  ScopedVector<ViewImpl> views_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewManagerImpl);
+};
+
+class ViewManager : public ShellClient,
+                    public Connector {
+ public:
+  explicit ViewManager(ScopedMessagePipeHandle shell_handle)
+      : shell_(shell_handle.Pass(), this) {
+    nvc_.reset(new NativeViewportClientImpl(this));
+  }
+
+ private:
+  // Overridden from ShellClient:
+  virtual void AcceptConnection(ScopedMessagePipeHandle handle) MOJO_OVERRIDE {
+    view_managers_.push_back(new ViewManagerImpl(handle.Pass()));
+  }
+
+  // Overridden from Connector:
+  virtual void Connect(const String& url,
+                       ScopedMessagePipeHandle client_handle) OVERRIDE {
+    shell_->Connect(url, client_handle.Pass());
+  }
+
+  RemotePtr<Shell> shell_;
+  scoped_ptr<NativeViewportClientImpl> nvc_;
+  ScopedVector<ViewManagerImpl> view_managers_;
+
+  DISALLOW_COPY_AND_ASSIGN(ViewManager);
+};
+
+}  // namespace examples
+}  // namespace mojo
+
+extern "C" VIEW_MANAGER_EXPORT MojoResult CDECL MojoMain(
+    MojoHandle shell_handle) {
+  base::MessageLoop loop;
+  mojo::examples::ViewManager view_manager(
+      mojo::MakeScopedHandle(mojo::MessagePipeHandle(shell_handle)).Pass());
+  loop.Run();
+
+  return MOJO_RESULT_OK;
+}