/* This file is part of the KDE project
   Copyright (C) 2007 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef KEXITEXTFORMATTER_H
#define KEXITEXTFORMATTER_H

#include <kexidb/field.h>

//! @short Text formatter used to format TQVariant values to text for displaying and back to TQVariant
/*! Used by KexiInputTableEdit, KexiDateTableEdit, KexiTimeTableEdit, KexiDateTimeTableEdit,
 KexiDBLineEdit (forms), etc. */
class KEXIDATATABLE_EXPORT KexiTextFormatter
{
	public:
		KexiTextFormatter();
		~KexiTextFormatter();

		//! Assigns \a field to the formatter. This affects its behaviour.
		void setField( KexiDB::Field* field );

		/*! \return text for \a value. 
		 A field schema set using setField() is used to perform the formatting.
		 \a add is a text that should be added to the value if possible. 
		 Used in KexiInputTableEdit::setValueInternal(), by form widgets and for reporting/printing. */
		TQString valueToText(const TQVariant& value, const TQString& add) const;

		/*! \return value cnverted from \a text
		 A field schema set using setField() is used to perform the formatting.
		 Used in KexiInputTableEdit::setValueInternal(), by form widgets and for reporting/printing. */
		TQVariant textToValue(const TQString& text) const;

		/*! \return true if value formatted as \a text is empty. 
		 A field schema set using setField() is used to perform the calculation. */
		bool valueIsEmpty(const TQString& text) const;

		/*! \return true if value formatted as \a text is valid. 
		 A field schema set using setField() is used to perform the calculation. */
		bool valueIsValid(const TQString& text) const;

		/*! \return input mask for intering values related to a field schema 
		 which has been set using setField(). */
		TQString inputMask() const;

		class Private;
		Private *d;
};

#endif