mus: move View Manager to components/mus/vm

components/mus/view_tree_host_impl.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 COMPONENTS_MUS_VIEW_TREE_HOST_IMPL_H_
-#define COMPONENTS_MUS_VIEW_TREE_HOST_IMPL_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "components/mus/display_manager.h"
-#include "components/mus/event_dispatcher.h"
-#include "components/mus/focus_controller_delegate.h"
-#include "components/mus/public/cpp/types.h"
-#include "components/mus/public/interfaces/view_tree_host.mojom.h"
-#include "components/mus/server_view.h"
-
-namespace cc {
-class SurfaceManager;
-}
-
-namespace mus {
-class SurfacesScheduler;
-}
-
-namespace mus {
-
-class ConnectionManager;
-class FocusController;
-class ViewTreeHostDelegate;
-class ViewTreeImpl;
-
-// ViewTreeHostImpl is an implementation of the ViewTreeHost interface.
-// It serves as a top level root view for a window. Its lifetime is managed by
-// ConnectionManager. If the connection to the client breaks or if the user
-// closes the associated window, then this object and related state will be
-// deleted.
-class ViewTreeHostImpl : public DisplayManagerDelegate,
-                         public mojo::ViewTreeHost,
-                         public FocusControllerDelegate {
- public:
-  // TODO(fsamuel): All these parameters are just plumbing for creating
-  // DisplayManagers. We should probably just store these common parameters
-  // in the DisplayManagerFactory and pass them along on DisplayManager::Create.
-  ViewTreeHostImpl(mojo::ViewTreeHostClientPtr client,
-                   ConnectionManager* connection_manager,
-                   mojo::ApplicationImpl* app_impl,
-                   const scoped_refptr<GpuState>& gpu_state,
-                   const scoped_refptr<SurfacesState>& surfaces_state);
-  ~ViewTreeHostImpl() override;
-
-  // Initializes state that depends on the existence of a ViewTreeHostImpl.
-  void Init(ViewTreeHostDelegate* delegate);
-
-  ViewTreeImpl* GetViewTree();
-
-  mojo::ViewTreeHostClient* client() const { return client_.get(); }
-
-  cc::SurfaceId surface_id() const { return surface_id_; }
-
-  // Returns whether |view| is a descendant of this root but not itself a
-  // root view.
-  bool IsViewAttachedToRoot(const ServerView* view) const;
-
-  // Schedules a paint for the specified region in the coordinates of |view| if
-  // the |view| is in this viewport. Returns whether |view| is in the viewport.
-  bool SchedulePaintIfInViewport(const ServerView* view,
-                                 const gfx::Rect& bounds);
-
-  // Returns the metrics for this viewport.
-  const mojo::ViewportMetrics& GetViewportMetrics() const;
-
-  ConnectionManager* connection_manager() { return connection_manager_; }
-
-  // Returns the root ServerView of this viewport.
-  ServerView* root_view() { return root_.get(); }
-  const ServerView* root_view() const { return root_.get(); }
-
-  void SetFocusedView(ServerView* view);
-  ServerView* GetFocusedView();
-  void DestroyFocusController();
-
-  void UpdateTextInputState(ServerView* view, const ui::TextInputState& state);
-  void SetImeVisibility(ServerView* view, bool visible);
-
-  void OnAccelerator(uint32_t accelerator_id, mojo::EventPtr event);
-  void DispatchInputEventToView(ServerView* target, mojo::EventPtr event);
-
-  // ViewTreeHost:
-  void SetSize(mojo::SizePtr size) override;
-  void SetTitle(const mojo::String& title) override;
-  void AddAccelerator(uint32_t id,
-                      mojo::KeyboardCode keyboard_code,
-                      mojo::EventFlags flags) override;
-  void RemoveAccelerator(uint32_t id) override;
-
- private:
-  void OnClientClosed();
-
-  // DisplayManagerDelegate:
-  ServerView* GetRootView() override;
-  void OnEvent(mojo::EventPtr event) override;
-  void OnDisplayClosed() override;
-  void OnViewportMetricsChanged(
-      const mojo::ViewportMetrics& old_metrics,
-      const mojo::ViewportMetrics& new_metrics) override;
-  void OnTopLevelSurfaceChanged(cc::SurfaceId surface_id) override;
-
-  // FocusControllerDelegate:
-  void OnFocusChanged(ServerView* old_focused_view,
-                      ServerView* new_focused_view) override;
-
-  ViewTreeHostDelegate* delegate_;
-  ConnectionManager* const connection_manager_;
-  mojo::ViewTreeHostClientPtr client_;
-  EventDispatcher event_dispatcher_;
-  scoped_ptr<ServerView> root_;
-  scoped_ptr<DisplayManager> display_manager_;
-  scoped_ptr<FocusController> focus_controller_;
-  cc::SurfaceId surface_id_;
-
-  DISALLOW_COPY_AND_ASSIGN(ViewTreeHostImpl);
-};
-
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_VIEW_TREE_HOST_IMPL_H_