/*
 * Copyright 2010, Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 */
#ifndef	_ABSTRACT_LAYOUT_H
#define	_ABSTRACT_LAYOUT_H

#include <Alignment.h>
#include <Layout.h>
#include <Size.h>

class BAbstractLayout : public BLayout {
public:
								BAbstractLayout();
								BAbstractLayout(BMessage* from);
	virtual						~BAbstractLayout();

	virtual	BSize				MinSize();
	virtual	BSize				MaxSize();
	virtual	BSize				PreferredSize();
	virtual	BAlignment			Alignment();

	virtual	void				SetExplicitMinSize(BSize size);
	virtual	void				SetExplicitMaxSize(BSize size);
	virtual	void				SetExplicitPreferredSize(BSize size);
	virtual	void				SetExplicitAlignment(BAlignment alignment);

	virtual	BSize				BaseMinSize();
	virtual	BSize				BaseMaxSize();
	virtual	BSize				BasePreferredSize();
	virtual	BAlignment			BaseAlignment();

	virtual BRect				Frame();
	virtual	void				SetFrame(BRect frame);	

	virtual	bool				IsVisible();
	virtual	void				SetVisible(bool visible);

	virtual status_t			Archive(BMessage* into, bool deep = true) const;
	virtual	status_t			AllUnarchived(const BMessage* from);

	virtual	status_t			Perform(perform_code d, void* arg);

protected:
	virtual	void				OwnerChanged(BView* was);
	virtual	void				AncestorVisibilityChanged(bool shown);

private:
			struct	Proxy;
			struct	ViewProxy;
			struct	DataProxy;

			Proxy*				fExplicitData;
};

#endif	//	_ABSTRACT_LAYOUT_ITEM_H