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// 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 view_manager {
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 view_manager
#endif // COMPONENTS_MUS_VIEW_TREE_HOST_CONNECTION_H_
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