/* This file is part of the KDE project
   Copyright (C) 2002 Lucijan Busch <lucijan@gmx.at>
   Copyright (C) 2003-2004 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., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 */

#ifndef KEXIINPUTTABLEEDIT_H
#define KEXIINPUTTABLEEDIT_H

#include <klineedit.h>
#include <qvariant.h>

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

/*! @short General purpose cell editor using line edit widget.
*/
class KexiInputTableEdit : public KexiTableEdit
{
	Q_OBJECT

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

		virtual ~KexiInputTableEdit();

		virtual bool valueChanged();

		//! \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();

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

//		virtual bool eventFilter(QObject* watched, QEvent* e);
//js		void end(bool mark);
//js		void backspace();
		virtual void clear();

		/*! \return total size of this editor, including any buttons, etc. (if present). */
		virtual QSize totalSize();

		/*! Handles action having standard name \a actionName. 
		 Action could be: "edit_cut", "edit_paste", etc. */
		virtual void handleAction(const QString& actionName);

		/*! Handles copy action for value. The \a value is copied to clipboard in format appropriate 
		 for the editor's impementation, e.g. for image cell it can be a pixmap. 
		 Reimplemented after KexiTableEdit. */
		virtual void handleCopyAction(const QVariant& value);

		/*! Shows a special tooltip for \a value if needed, i.e. if the value could not fit inside \a rect
		 for a given font metrics \a fm. 
		 \return true a normal tooltip should be displayed (using QToolTip,) and false if 
		 no tooltip should be displayed or a custom tooltip was displayed internally (not yet supported).
		 This implementation converts the value to text using valueToText() if \a calue is not string to see
		 whether it can fit inside the cell's \a rect. */
		virtual bool showToolTipIfNeeded(const QVariant& value, const QRect& rect, const QFontMetrics& fm);

	protected slots:
		void setRestrictedCompletion();
		void completed(const QString &);

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

		void showHintButton();
		void init();
		virtual void paintEvent( QPaintEvent *e );

		/*! \return text for \a value. \a add is a text that should be added to the value if possible.
		 If \a setValidator is true, an appropriate validator will be setup for the internal line edit 
		 widget when needed. */
		QString valueToText(const QVariant& value, const QString& add, bool setValidator = false);

		bool m_calculatedCell;
		QString m_decsym; //! decimal symbol
		QString m_origText; //! orig. Line Edit's text after conversion - for easy comparing
		KLineEdit *m_lineedit;

	signals:
		void hintClicked();
};

KEXI_DECLARE_CELLEDITOR_FACTORY_ITEM(KexiInputEditorFactoryItem)

#endif
