Nesting

mojo/examples/window_manager/window_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 "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 "ui/events/event_constants.h"
 
 #if defined CreateWindow
 #undef CreateWindow
 #endif
 
+using mojo::view_manager::TransportNodeId;
+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 {
 
 class WindowManager;
 
 class WindowManagerConnection : public InterfaceImpl<IWindowManager> {
  public:
   explicit WindowManagerConnection(WindowManager* window_manager)
       : window_manager_(window_manager) {}
   virtual ~WindowManagerConnection() {}
 
  private:
   // Overridden from IWindowManager:
-  virtual void CloseWindow(view_manager::TransportNodeId node_id) OVERRIDE;
+  virtual void CloseWindow(TransportNodeId node_id) OVERRIDE;
 
   WindowManager* window_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManagerConnection);
 };
 
 class WindowManager : public Application,
-                      public view_manager::ViewObserver {
+                      public ViewObserver,
+                      public ViewManagerDelegate {
  public:
-  WindowManager() {}
+  WindowManager() : view_manager_(NULL) {}
   virtual ~WindowManager() {}
 
-  void CloseWindow(view_manager::TransportNodeId node_id) {
-    DCHECK(view_manager_);
-    view_manager::ViewTreeNode* node = view_manager_->GetNodeById(node_id);
+  void CloseWindow(TransportNodeId node_id) {
+    ViewTreeNode* node = view_manager_->GetNodeById(node_id);
     DCHECK(node);
     node->Destroy();
   }
 
  private:
   // Overridden from Application:
   virtual void Initialize() MOJO_OVERRIDE {
     AddService<WindowManagerConnection>(this);
+    ViewManager::Create(this, this);
+  }
 
-    view_manager_ = view_manager::ViewManager::CreateBlocking(this);
-    view_manager::ViewTreeNode* node =
-        view_manager::ViewTreeNode::Create(view_manager_);
-    view_manager_->roots().front()->AddChild(node);
+    // Overridden from ViewObserver:
+  virtual void OnViewInputEvent(View* view, EventPtr event) OVERRIDE {
+    if (event->action == ui::ET_MOUSE_RELEASED) {
+      if (event->flags & ui::EF_LEFT_MOUSE_BUTTON)
+        CreateWindow("mojo:mojo_embedded_app");
+      else if (event->flags & ui::EF_RIGHT_MOUSE_BUTTON)
+        CreateWindow("mojo:mojo_nesting_app");
+    }
+  }
+
+  // Overridden from ViewManagerDelegate:
+  virtual void OnRootAdded(ViewManager* view_manager,
+                           ViewTreeNode* root) OVERRIDE {
+    DCHECK(!view_manager_);
+    view_manager_ = view_manager;
+
+    ViewTreeNode* node = ViewTreeNode::Create(view_manager);
+    view_manager->roots().front()->AddChild(node);
     node->SetBounds(gfx::Rect(800, 600));
     parent_node_id_ = node->id();
 
-    view_manager::View* view = view_manager::View::Create(view_manager_);
+    View* view = View::Create(view_manager);
     node->SetActiveView(view);
     view->SetColor(SK_ColorBLUE);
     view->AddObserver(this);
   }
 
-    // Overridden from ViewObserver:
-  virtual void OnViewInputEvent(view_manager::View* view,
-                                EventPtr event) OVERRIDE {
-    if (event->action == ui::ET_MOUSE_RELEASED)
-      CreateWindow();
-  }
-
-  void CreateWindow() {
-    view_manager::ViewTreeNode* node =
-        view_manager_->GetNodeById(parent_node_id_);
+  void CreateWindow(const String& url) {
+    ViewTreeNode* node = view_manager_->GetNodeById(parent_node_id_);
 
     gfx::Rect bounds(50, 50, 200, 200);
     if (!node->children().empty()) {
       gfx::Point position = node->children().back()->bounds().origin();
       position.Offset(50, 50);
       bounds.set_origin(position);
     }
 
-    view_manager::ViewTreeNode* embedded =
-        view_manager::ViewTreeNode::Create(view_manager_);
+    ViewTreeNode* embedded = ViewTreeNode::Create(view_manager_);
     node->AddChild(embedded);
     embedded->SetBounds(bounds);
-    embedded->Embed("mojo:mojo_embedded_app");
+    embedded->Embed(url);
   }
 
-  view_manager::ViewManager* view_manager_;
-  view_manager::TransportNodeId parent_node_id_;
+  ViewManager* view_manager_;
+  TransportNodeId parent_node_id_;
 
   DISALLOW_COPY_AND_ASSIGN(WindowManager);
 };
 
-void WindowManagerConnection::CloseWindow(
-    view_manager::TransportNodeId node_id) {
+void WindowManagerConnection::CloseWindow(TransportNodeId node_id) {
   window_manager_->CloseWindow(node_id);
 }
 
 }  // namespace examples
 
 // static
 Application* Application::Create() {
   return new examples::WindowManager;
 }
 
 }  // namespace mojo