mozart: Initial commit of the launcher.

services/ui/launcher/launcher_view_tree.h

+// Copyright 2015 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.
+
+#ifndef SERVICES_UI_LAUNCHER_VIEW_TREE_IMPL_H_
+#define SERVICES_UI_LAUNCHER_VIEW_TREE_IMPL_H_
+
+#include "base/macros.h"
+#include "mojo/public/cpp/application/application_impl.h"
+#include "mojo/public/cpp/bindings/binding.h"
+#include "mojo/services/native_viewport/interfaces/native_viewport.mojom.h"
+#include "mojo/services/surfaces/cpp/surfaces_utils.h"
+#include "mojo/services/surfaces/interfaces/display.mojom.h"
+#include "mojo/services/surfaces/interfaces/quads.mojom.h"
+#include "mojo/services/surfaces/interfaces/surfaces.mojom.h"
+#include "mojo/services/ui/views/interfaces/view_manager.mojom.h"
+
+namespace launcher {
+
+class LauncherViewTree : public mojo::ui::ViewTree {
+ public:
+  LauncherViewTree(mojo::ApplicationImpl* app_impl,
+                   mojo::DisplayPtr display,
+                   mojo::ViewportMetricsPtr viewport_metrics);
+
+  ~LauncherViewTree() override;
+
+  void SetRoot(mojo::ui::ViewTokenPtr token);
+  void SetViewportMetrics(mojo::ViewportMetricsPtr viewport_metrics);
+  void DispatchEvent(mojo::EventPtr event);
+
+ private:
+  // |ViewTree|:
+  void OnLayout(const OnLayoutCallback& callback) override;
+  void OnRootUnavailable(uint32_t root_key,
+                         const OnRootUnavailableCallback& callback) override;
+
+  void OnViewManagerConnectionError();
+  void OnViewTreeRegistered();
+
+  void LayoutRoot();
+  void OnLayoutResult(mojo::ui::ViewLayoutInfoPtr info);
+
+  void ScheduleFrame();
+  void FinishFrame();
+  void OnFrameSubmitted();
+
+  mojo::ui::ViewManagerPtr view_manager_;
+  mojo::DisplayPtr display_;
+  mojo::ViewportMetricsPtr viewport_metrics_;
+  mojo::Binding<mojo::ui::ViewTree> binding_;
+
+  mojo::ui::ViewTreeHostPtr view_tree_host_;
+
+  mojo::ui::ViewTokenPtr root_;
+  uint32_t root_key_;
+  mojo::ui::ViewLayoutInfoPtr root_layout_info_;
+
+  bool frame_scheduled_;
+  bool frame_pending_;
+
+  DISALLOW_COPY_AND_ASSIGN(LauncherViewTree);
+};
+
+}  // namespace launcher
+
+#endif  // SERVICES_UI_LAUNCHER_VIEW_TREE_IMPL_H_