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/*
   ui/listview.h
   This file is part of the Osirion project and is distributed under
   the terms of the GNU General Public License version 2
*/

#ifndef __INCLUDED_UI_LISTVIEW_H__
#define __INCLUDED_UI_LISTVIEW_H__

#include <string>
#include "ui/widget.h"

namespace ui
{
class ListView;
}

#include "ui/listitem.h"

namespace ui
{

/**
 * @brief a list of selectable items
 **/
class ListView : public Widget
{
public:
	ListView(Widget *parent=0);
	~ListView();
	
	/// current scroll position
	inline float scroll() const {
		return listview_scroll;
	}

	/// return last selected listitem
	inline ListItem *selected() const {
		return listview_selecteditem;
	}
	
	/* -- mutators --------------------------------------------- */

	/// set scroll
	void set_scroll(float scroll);

	/// scroll down
	void inc_scroll(float scroll);

	/// scroll up
	void dec_scroll(float scroll); 
	
	/// clear all listitems
	void clear();
	
	/// set selection to specified ListItem
	void select(ListItem *item);
	
	/// set selection to nothing	
	void deselect();
	
protected:	
	virtual void resize();
	
	/// emit event handler
	virtual bool on_emit(Widget *sender, const Event event, void *data);
	
private:
	float		listview_scroll;
	ListItem	*listview_selecteditem;
};

} // namespacd ui

#endif // __INCLUDED_UI_LISTVIEW_H__