A new WM bootstrap flow

mojo/examples/wm_flow/app/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/bind.h"
+#include "mojo/public/cpp/application/application_connection.h"
+#include "mojo/public/cpp/application/application_delegate.h"
+#include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/services/public/cpp/view_manager/node.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_client_factory.h"
+#include "mojo/services/public/cpp/view_manager/view_manager_delegate.h"
+#include "mojo/services/public/interfaces/view_manager/view_manager.mojom.h"
+
+namespace examples {
+namespace {
+void ConnectCallback(bool success) {}
+
+const SkColor kColors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorYELLOW };
+
+}  // namespace
+
+// This app starts its life via Connect() rather than by being embed, so it does
+// not start with a connection to the ViewManager service. It has to obtain a
+// connection by connecting to the ViewManagerInit service and asking to be
+// embed without a node context.
+class WMFlowApp : public mojo::ApplicationDelegate,
+                  public mojo::view_manager::ViewManagerDelegate {
+ public:
+  WMFlowApp() : embed_count_(0), view_manager_client_factory_(this) {}
+  virtual ~WMFlowApp() {}
+
+ private:
+  // Overridden from Application:
+  virtual void Initialize(mojo::ApplicationImpl* app) MOJO_OVERRIDE {
+    mojo::view_manager::ViewManagerInitServicePtr init_svc;
+    app->ConnectToService("mojo:mojo_view_manager", &init_svc);
+    init_svc->Embed("mojo:mojo_wm_flow_app", base::Bind(&ConnectCallback));
+    init_svc->Embed("mojo:mojo_wm_flow_app", base::Bind(&ConnectCallback));
+    init_svc->Embed("mojo:mojo_wm_flow_app", base::Bind(&ConnectCallback));
+  }
+  virtual bool ConfigureIncomingConnection(
+      mojo::ApplicationConnection* connection) MOJO_OVERRIDE {
+    connection->AddService(&view_manager_client_factory_);
+    return true;
+  }
+
+  void OnConnect(bool success) {}
+
+  // Overridden from mojo::view_manager::ViewManagerDelegate:
+  virtual void OnRootAdded(mojo::view_manager::ViewManager* view_manager,
+                           mojo::view_manager::Node* root) MOJO_OVERRIDE {
+    mojo::view_manager::View* view =
+        mojo::view_manager::View::Create(view_manager);
+    root->SetActiveView(view);
+    view->SetColor(kColors[embed_count_++ % arraysize(kColors)]);
+  }
+  virtual void OnViewManagerDisconnected(
+      mojo::view_manager::ViewManager* view_manager) MOJO_OVERRIDE {}
+
+  int embed_count_;
+  mojo::view_manager::ViewManagerClientFactory view_manager_client_factory_;
+
+  DISALLOW_COPY_AND_ASSIGN(WMFlowApp);
+};
+
+}  // namespace examples
+
+namespace mojo {
+
+// static
+ApplicationDelegate* ApplicationDelegate::Create() {
+  return new examples::WMFlowApp;
+}
+
+}  // namespace