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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
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 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
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#ifndef _DBAUI_MARKTREE_HXX_
#define _DBAUI_MARKTREE_HXX_

#ifndef DBAUI_DBTREELISTBOX_HXX
#include "dbtreelistbox.hxx"
#endif



//.........................................................................
namespace dbaui
{
//.........................................................................

//========================================================================
//= OMarkableTreeListBox
//========================================================================
/** a tree list box where all entries can be marked (with a checkbox) and
	unmarked. In addition, inner nodes know a third state which applies
	if some, but not all of their descendants are marked.
*/
class OMarkableTreeListBox : public DBTreeListBox
{
	SvLBoxButtonData*	m_pCheckButton;
	Link				m_aCheckButtonHandler;

public:
	OMarkableTreeListBox( Window* pParent
							,const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& _rxORB
							, WinBits nWinStyle=0 );
	OMarkableTreeListBox( Window* pParent
							,const ::com::sun::star::uno::Reference< ::com::sun::star::lang::XMultiServiceFactory >& _rxORB
							, const ResId& rResId );
	~OMarkableTreeListBox();

	virtual void    KeyInput( const KeyEvent& rKEvt );
	virtual void	CheckButtonHdl();
	void			CheckButtons();		// make the button states consistent (bottom-up)

	/// the handler given is called whenever the check state of one or more items changed
	void SetCheckHandler(const Link& _rHdl) { m_aCheckButtonHandler = _rHdl; }

protected:
	virtual void Paint(const Rectangle& _rRect);
	virtual void checkedButton_noBroadcast(SvLBoxEntry* _pEntry);

	SvButtonState	implDetermineState(SvLBoxEntry* _pEntry);
		// determines the check state of the given entry, by analyzing the states of all descendants

private:
	void InitButtonData();
};

//.........................................................................
}	// namespace dbaui
//.........................................................................

#endif // _DBAUI_MARKTREE_HXX_