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// Copyright (c) 2011 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 UI_AURA_CLIENT_STACKING_CLIENT_H_
#define UI_AURA_CLIENT_STACKING_CLIENT_H_
#pragma once
#include "ui/aura/aura_export.h"
namespace aura {
class Window;
// An interface implemented by an object that stacks windows.
class AURA_EXPORT StackingClient {
public:
virtual ~StackingClient() {}
// Called by the Window when its parent is set to NULL. The delegate is given
// an opportunity to inspect the window and add it to a default parent window
// of its choosing.
virtual void AddChildToDefaultParent(Window* window) = 0;
// Returns true if |window| can be activated or deactivated.
// A window manager typically defines some notion of "top level window" that
// supports activation/deactivation.
virtual bool CanActivateWindow(Window* window) const = 0;
// Returns the window that should be activated other than |ignore|.
virtual Window* GetTopmostWindowToActivate(Window* ignore) const = 0;
};
} // namespace aura
#endif // UI_AURA_CLIENT_STACKING_CLIENT_H_
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