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/* This file is part of the KDE project
Copyright (C) 2005 Cedric Pasteur <cedric.pasteur@free.fr>
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 KexiDBCheckBox_H
#define KexiDBCheckBox_H
#include "kexiformdataiteminterface.h"
#include <tqcheckbox.h>
//! @short A db-aware check box
class KEXIFORMUTILS_EXPORT KexiDBCheckBox : public TQCheckBox, public KexiFormDataItemInterface
{
Q_OBJECT
TQ_PROPERTY(TQString dataSource READ dataSource WRITE setDataSource DESIGNABLE true)
TQ_PROPERTY(TQCString dataSourceMimeType READ dataSourceMimeType WRITE setDataSourceMimeType DESIGNABLE true)
TQ_OVERRIDE( Tristate tristate READ isTristate WRITE setTristate )
TQ_ENUMS( Tristate )
public:
KexiDBCheckBox(const TQString &text, TQWidget *parent, const char *name=0);
virtual ~KexiDBCheckBox();
inline TQString dataSource() const { return KexiFormDataItemInterface::dataSource(); }
inline TQCString dataSourceMimeType() const { return KexiFormDataItemInterface::dataSourceMimeType(); }
virtual TQVariant value();
virtual void setInvalidState( const TQString& displayText );
//! \return true if editor's value is null (not empty)
//! Used for checking if a given constraint within table of form is met.
virtual bool valueIsNull();
//! \return true if editor's value is empty (not necessary null).
//! Only few data types can accept "EMPTY" property
//! (use KexiDB::Field::hasEmptyProperty() to check this).
//! Used for checking if a given constraint within table or form is met.
virtual bool valueIsEmpty();
/*! \return 'readOnly' flag for this widget. */
virtual bool isReadOnly() const;
/*! \return the view widget of this item, e.g. line edit widget. */
virtual TQWidget* widget();
virtual bool cursorAtStart();
virtual bool cursorAtEnd();
virtual void clear();
virtual void setEnabled(bool enabled);
enum Tristate { TristateDefault, TristateOn, TristateOff };
void setTristate(Tristate tristate);
Tristate isTristate() const;
/*! Reimplemented after KexiFormDataItemInterface. */
virtual void setDisplayDefaultValue(TQWidget* widget, bool displayDefaultValue);
public slots:
void setDataSource(const TQString &ds);
inline void setDataSourceMimeType(const TQCString &ds) { KexiFormDataItemInterface::setDataSourceMimeType(ds); }
void slotStateChanged(int state);
//! This implementation just disables read only widget
virtual void setReadOnly( bool readOnly );
protected:
virtual void setValueInternal(const TQVariant& add, bool removeOld);
//! \return true in isTristate() == TristateDefault and the widget has bound data source
//! or if isTristate() == TristateOn, else false is returned.
bool isTristateInternal() const;
//! Updates tristate in TQCheckBox itself according to m_tristate.
void updateTristate();
private:
bool m_invalidState : 1;
bool m_tristateChanged : 1; //!< used in setTristate()
Tristate m_tristate; //!< used in isTristate() and setTristate()
};
#endif
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