validator.h

/* This file is part of the KDE project
   Copyright (C) 2004, 2006 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 KEXI_VALIDATOR_H
#define KEXI_VALIDATOR_H
 
#include "kexiutils_export.h"
 
#include <tqvalidator.h>
#include <tqvariant.h>
#include <tqstring.h>
 
#include <tdelocale.h>
 
namespace KexiUtils {


class KEXIUTILS_EXPORT Validator : public TQValidator
{
    public:
        enum Result { Error = 0, Ok = 1, Warning = 2 };
 
        Validator(TQObject * parent = 0, const char * name = 0);
        virtual ~Validator();

        void setAcceptsEmptyValue( bool set ) { m_acceptsEmptyValue = set; }

        bool acceptsEmptyValue() const { return m_acceptsEmptyValue; }

        Result check(const TQString &valueName, const TQVariant& v, TQString &message,
            TQString &details);

        virtual TQValidator::State validate ( TQString & input, int & pos ) const;

        static const TQString msgColumnNotEmpty() {
            return I18N_NOOP("\"%1\" value has to be entered.");
        }

        void addChildValidator( Validator* v );
 
    protected:
        /* Used by check(), for reimplementation, by default returns \a Error.*/
        virtual Result internalCheck(const TQString &valueName, const TQVariant& v, 
            TQString &message, TQString &details);
 
        bool m_acceptsEmptyValue : 1;
 
    friend class MultiValidator;
};


class KEXIUTILS_EXPORT MultiValidator : public Validator
{
    public:
        MultiValidator(TQObject * parent = 0, const char * name = 0);

        MultiValidator(TQValidator *validator, TQObject * parent = 0, const char * name = 0);

        void addSubvalidator( TQValidator* validator, bool owned = true );

        virtual TQValidator::State validate ( TQString & input, int & pos ) const;

        virtual void fixup ( TQString & input ) const;
 
    private:
        virtual Validator::Result internalCheck(
            const TQString &valueName, const TQVariant& v, 
            TQString &message, TQString &details);
 
 
    protected:
        TQPtrList<TQValidator> m_ownedSubValidators;
        TQValueList<TQValidator*> m_subValidators;
};
 
}
 
#endif