Support modal windows

athena/screen/screen_manager_impl.h

Index: athena/screen/screen_manager_impl.h
diff --git a/athena/screen/screen_manager_impl.h b/athena/screen/screen_manager_impl.h
new file mode 100644
index 0000000000000000000000000000000000000000..17385428a9c9a6a4f3d34fd0c2790ed8136c2a9b
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+++ b/athena/screen/screen_manager_impl.h
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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.
+
+#ifndef ATHENA_SCREEN_SCREEN_MANAGER_IMPL_H_
+#define ATHENA_SCREEN_SCREEN_MANAGER_IMPL_H_
+
+#include "athena/athena_export.h"
+#include "athena/screen/public/screen_manager.h"
+#include "base/memory/scoped_ptr.h"
+#include "ui/aura/client/window_tree_client.h"
+
+namespace aura {
+namespace client {
+class FocusClient;
+class ScreenPositionClient;
+}
+}
+
+namespace wm {
+class ScopedCaptureClient;
+}
+
+namespace athena {
+class AcceleratorHandler;
+
+class ATHENA_EXPORT ScreenManagerImpl : public ScreenManager,
+                                        public aura::client::WindowTreeClient {
+ public:
+  explicit ScreenManagerImpl(aura::Window* root_window);
+  virtual ~ScreenManagerImpl();
+
+  void Init();
+
+  // Returns a container which has |priority|. Null if such container
+  // doesn't exist.
+  aura::Window* FindContainerByPriority(int priority);
+
+ private:
+  // ScreenManager:
+  virtual aura::Window* CreateContainer(const ContainerParams& params) override;
+  virtual aura::Window* GetContext() override;
+  virtual void SetRotation(gfx::Display::Rotation rotation) override;
+  virtual void SetRotationLocked(bool rotation_locked) override;
+
+  // aura::client::WindowTreeClient:
+  virtual aura::Window* GetDefaultParent(aura::Window* context,
+                                         aura::Window* window,
+                                         const gfx::Rect& bounds) override;
+
+  int GetModalContainerPriority(aura::Window* window, aura::Window* parent);
+
+  // Returns a container with |params.default_parent| == true.
+  aura::Window* GetDefaultContainer();
+
+  // Not owned.
+  aura::Window* root_window_;
+
+  scoped_ptr<aura::client::FocusClient> focus_client_;
+  scoped_ptr<AcceleratorHandler> accelerator_handler_;
+  scoped_ptr<::wm::ScopedCaptureClient> capture_client_;
+  scoped_ptr<aura::client::ScreenPositionClient> screen_position_client_;
+
+  gfx::Display::Rotation last_requested_rotation_;
+  bool rotation_locked_;
+
+  DISALLOW_COPY_AND_ASSIGN(ScreenManagerImpl);
+};
+
+}  // namespace athena
+
+#endif  // ATHENA_SCREEN_SCREEN_MANAGER_IMPL_H_