/* This file is part of the KDE project
   Copyright (C) 2004 Jaroslaw Staniek <js@iidea.pl>

   This program is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public
   License as published by the Free Software Foundation; either
   version 2 of the License, or (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this program; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.
 */

#ifndef KEXIBOOLTABLEEDIT_H
#define KEXIBOOLTABLEEDIT_H

#include <qvariant.h>

#include "kexitableedit.h"
#include "kexicelleditorfactory.h"

/*! @short Cell editor for boolean type.
*/
class KEXIDATATABLE_EXPORT KexiBoolTableEdit : public KexiTableEdit
{
	Q_OBJECT

	public:
		KexiBoolTableEdit(KexiTableViewColumn &column, QScrollView *parent=0);

		virtual ~KexiBoolTableEdit();

		//! \return true if editor's value is null (not empty)
		virtual bool valueIsNull();

		//! \return true if editor's value is empty (not null). 
		//! Only few field types can accept "EMPTY" property 
		//! (check this with KexiDB::Field::hasEmptyProperty()), 
		virtual bool valueIsEmpty();

		virtual QVariant value(bool &ok);

		virtual bool cursorAtStart();
		virtual bool cursorAtEnd();

		virtual void clear();

		virtual void setupContents( QPainter *p, bool focused, QVariant val, 
			QString &txt, int &align, int &x, int &y_offset, int &w, int &h );

		virtual void clickedOnContents();

	protected slots:

	protected:
		//! initializes this editor with \a add value
		virtual void init(const QString& add, bool removeOld);

		void showHintButton();
		void init();

		//! We've no editor widget that would store current value, so we do this here
		QVariant m_currentValue;

	signals:
		void hintClicked();
};

class KexiBoolEditorFactoryItem : public KexiCellEditorFactoryItem
{
	public:
		KexiBoolEditorFactoryItem();
		virtual ~KexiBoolEditorFactoryItem();

	protected:
		virtual KexiTableEdit* createEditor(KexiTableViewColumn &column, QScrollView* parent = 0);
};

#endif
