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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 COMPONENTS_MUS_WS_SERVER_WINDOW_DELEGATE_H_
#define COMPONENTS_MUS_WS_SERVER_WINDOW_DELEGATE_H_
#include "base/memory/scoped_ptr.h"
#include "components/mus/public/interfaces/mus_constants.mojom.h"
#include "components/mus/public/interfaces/window_tree.mojom.h"
namespace mus {
class SurfacesState;
namespace ws {
struct ClientWindowId;
class ServerWindow;
struct WindowId;
class ServerWindowDelegate {
public:
virtual SurfacesState* GetSurfacesState() = 0;
virtual void OnScheduleWindowPaint(const ServerWindow* window) = 0;
// Returns the root of the window tree to which this |window| is attached.
// Returns null if this window is not attached up through to a root window.
virtual const ServerWindow* GetRootWindow(
const ServerWindow* window) const = 0;
// Schedules a callback to DestroySurfacesScheduledForDestruction() at the
// appropriate time, which may be synchronously.
virtual void ScheduleSurfaceDestruction(ServerWindow* window) = 0;
// Used to resolve a reference to a Window by ClientWindowId in submitted
// frames. When the client owning |ancestor| (or the client embedded at
// |ancestor|) submits a frame the frame may referenced child windows. The
// reference is done using an id that is only known to the client. This
// function resolves the id into the appropriate window, or null if a window
// can't be found.
virtual ServerWindow* FindWindowForSurface(
const ServerWindow* ancestor,
mojom::SurfaceType surface_type,
const ClientWindowId& client_window_id) = 0;
protected:
virtual ~ServerWindowDelegate() {}
};
} // namespace ws
} // namespace mus
#endif // COMPONENTS_MUS_WS_SERVER_WINDOW_DELEGATE_H_
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