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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_DISPLAY_MANAGER_DELEGATE_H_
#define COMPONENTS_MUS_DISPLAY_MANAGER_DELEGATE_H_
#include "components/mus/public/interfaces/view_tree.mojom.h"
namespace view_manager {
class ServerView;
// A DisplayManagerDelegate an interface to be implemented by an object that
// manages the lifetime of a DisplayManager, forwards events to the appropriate
// views, and responses to changes in viewport size.
class DisplayManagerDelegate {
public:
// Returns the root view of this display.
virtual ServerView* GetRootView() = 0;
// Called when the window managed by the DisplayManager is closed.
virtual void OnDisplayClosed() = 0;
// Called when an event arrives.
virtual void OnEvent(mojo::EventPtr event) = 0;
// Signals that the metrics of this display's viewport has changed.
virtual void OnViewportMetricsChanged(
const mojo::ViewportMetrics& old_metrics,
const mojo::ViewportMetrics& new_metrics) = 0;
protected:
virtual ~DisplayManagerDelegate() {}
};
} // namespace view_manager
#endif // COMPONENTS_MUS_DISPLAY_MANAGER_DELEGATE_H_
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