/* This file is part of the KDE project
   Copyright (C) 2002   Lucijan Busch <lucijan@gmx.at>

   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 KEXIPROPERTYSUBEDITOR_H
#define KEXIPROPERTYSUBEDITOR_H

#include <qwidget.h>

class KexiProperty;

//! The base class for all editors used in KexiPropertyEditor.
 
class KEXIPROPERTYEDITOR_EXPORT KexiPropertySubEditor : public QWidget
{
	Q_OBJECT

	public:
		KexiPropertySubEditor(QWidget *parent, KexiProperty *property, const char *name=0);
		virtual ~KexiPropertySubEditor();

		virtual bool eventFilter(QObject* watched, QEvent* e);
		virtual QVariant value();
		virtual void setValue(const QVariant &value);

		/*! Sets \a w as editor 's widget, ie the widget which events are filtered and which is resized.
		 If \a focusProxy is not 0, it will be used as focus proxy instead of \a w.
		*/
		void setWidget(QWidget *w, QWidget* focusProxy = 0);

		//! \sa m_leaveTheSpaceForRevertButton description
		bool leavesTheSpaceForRevertButton() const { return m_leaveTheSpaceForRevertButton; }
	signals:
		//! Validate the input in the editor.
		void accept(KexiPropertySubEditor *);
		//! Do not validate the contents of the editor.
		void reject(KexiPropertySubEditor *);
		//! The editor's value has changed.
		void changed(KexiPropertySubEditor *);

	protected:
		virtual void resizeEvent(QResizeEvent *ev);

		KexiProperty *m_property;
		QWidget *m_childWidget;
		/*! true if there should be left space at the right hand for the Revert Button
		 False by default. Integer editor (spinbox) sets this to true to avoid spin 
		 arrows clicking inconvenience. */
		bool m_leaveTheSpaceForRevertButton;
};

#endif
