mus: move View Manager to components/mus/vm

components/mus/view_tree_host_connection.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_CONNECTION_H_
-#define COMPONENTS_MUS_VIEW_TREE_HOST_CONNECTION_H_
-
-#include "base/memory/scoped_ptr.h"
-#include "components/mus/public/interfaces/view_tree_host.mojom.h"
-#include "components/mus/view_tree_host_delegate.h"
-#include "components/mus/view_tree_host_impl.h"
-#include "third_party/mojo/src/mojo/public/cpp/bindings/binding.h"
-
-namespace mus {
-
-class ConnectionManager;
-class ViewTreeImpl;
-
-// ViewTreeHostConnection is a server-side object that encapsulates the
-// connection between a client of the ViewTreeHost and its implementation.
-// ViewTreeHostConnection also establishes a ClientConnection via the same
-// code path as embedded views. ConnectionManager manages the lifetime of
-// ViewTreeHostConnections. If a connection to the client is lost or if the
-// associated root is closed, the ViewTreeHostConnection will inform the
-// ConnectionManager to destroy the root and its associated view tree.
-class ViewTreeHostConnection : public ViewTreeHostDelegate {
- public:
-  ViewTreeHostConnection(scoped_ptr<ViewTreeHostImpl> host_impl,
-                         ConnectionManager* connection_manager);
-
-  void set_view_tree(ViewTreeImpl* tree) { tree_ = tree; }
-
-  ViewTreeHostImpl* view_tree_host() { return host_.get(); }
-  const ViewTreeHostImpl* view_tree_host() const { return host_.get(); }
-
-  ConnectionManager* connection_manager() { return connection_manager_; }
-  const ConnectionManager* connection_manager() const {
-    return connection_manager_;
-  }
-
-  void CloseConnection();
-
- protected:
-  ~ViewTreeHostConnection() override;
-
-  // ViewTreeHostDelegate:
-  void OnDisplayInitialized() override;
-  void OnDisplayClosed() override;
-  ViewTreeImpl* GetViewTree() override;
-
- private:
-  scoped_ptr<ViewTreeHostImpl> host_;
-  ViewTreeImpl* tree_;
-  ConnectionManager* connection_manager_;
-  bool connection_closed_;
-
-  DISALLOW_COPY_AND_ASSIGN(ViewTreeHostConnection);
-};
-
-// Live implementation of ViewTreeHostConnection.
-class ViewTreeHostConnectionImpl : public ViewTreeHostConnection {
- public:
-  ViewTreeHostConnectionImpl(mojo::InterfaceRequest<mojo::ViewTreeHost> request,
-                             scoped_ptr<ViewTreeHostImpl> host_impl,
-                             mojo::ViewTreeClientPtr client,
-                             ConnectionManager* connection_manager);
-
- private:
-  ~ViewTreeHostConnectionImpl() override;
-
-  // ViewTreeHostDelegate:
-  void OnDisplayInitialized() override;
-
-  mojo::Binding<mojo::ViewTreeHost> binding_;
-  mojo::ViewTreeClientPtr client_;
-
-  DISALLOW_COPY_AND_ASSIGN(ViewTreeHostConnectionImpl);
-};
-
-}  // namespace mus
-
-#endif  // COMPONENTS_MUS_VIEW_TREE_HOST_CONNECTION_H_