Nesting

mojo/examples/nesting_app/nesting_app.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 "base/basictypes.h"
+#include "base/bind.h"
+#include "mojo/examples/window_manager/window_manager.mojom.h"
+#include "mojo/public/cpp/application/application.h"
+#include "mojo/services/public/cpp/view_manager/view.h"
+#include "mojo/services/public/cpp/view_manager/view_manager.h"
+#include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
+#include "mojo/services/public/cpp/view_manager/view_observer.h"
+#include "mojo/services/public/cpp/view_manager/view_tree_node.h"
+#include "mojo/services/public/cpp/view_manager/view_tree_node_observer.h"
+#include "ui/events/event_constants.h"
+
+using mojo::view_manager::View;
+using mojo::view_manager::ViewManager;
+using mojo::view_manager::ViewManagerDelegate;
+using mojo::view_manager::ViewObserver;
+using mojo::view_manager::ViewTreeNode;
+using mojo::view_manager::ViewTreeNodeObserver;
+
+namespace mojo {
+namespace examples {
+
+// An app that embeds another app.
+class NestingApp : public Application,
+                   public ViewManagerDelegate,
+                   public ViewObserver {
+ public:
+  NestingApp() {}
+  virtual ~NestingApp() {}
+
+ private:
+  // Overridden from Application:
+  virtual void Initialize() MOJO_OVERRIDE {
+    ViewManager::Create(this, this);
+    ConnectTo<IWindowManager>("mojo:mojo_window_manager", &window_manager_);
+  }
+
+  // Overridden from ViewManagerDelegate:
+  virtual void OnRootAdded(ViewManager* view_manager,
+                           ViewTreeNode* root) OVERRIDE {
+    View* view = View::Create(view_manager);
+    root->SetActiveView(view);
+    view->SetColor(SK_ColorCYAN);
+    view->AddObserver(this);
+
+    ViewTreeNode* nested = ViewTreeNode::Create(view_manager);
+    root->AddChild(nested);
+    nested->SetBounds(gfx::Rect(20, 20, 50, 50));
+    nested->Embed("mojo:mojo_embedded_app");
+  }
+  virtual void OnRootRemoved(ViewManager* view_manager,
+                             ViewTreeNode* root) OVERRIDE {
+    // TODO(beng): reap views & child nodes.
+  }
+
+  // Overridden from ViewObserver:
+  virtual void OnViewInputEvent(View* view, EventPtr event) OVERRIDE {
+    if (event->action == ui::ET_MOUSE_RELEASED)
+      window_manager_->CloseWindow(view->node()->id());
+  }
+
+  IWindowManagerPtr window_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(NestingApp);
+};
+
+}  // namespace examples
+
+// static
+Application* Application::Create() {
+  return new examples::NestingApp;
+}
+
+}  // namespace mojo