Qt 4.0: variantdelegate.h Example File (tools/settingseditor/variantdelegate.h)

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# variantdelegate.h Example File
tools/settingseditor/variantdelegate.h

        /****************************************************************************
        **
        ** Copyright (C) 2005-2005 Trolltech AS. All rights reserved.
        **
        ** This file is part of the documentation of the Qt Toolkit.
        **
        ** This file may be used under the terms of the GNU General Public
    ** License version 2.0 as published by the Free Software Foundation
    ** and appearing in the file LICENSE.GPL included in the packaging of
    ** this file.  Please review the following information to ensure GNU
    ** General Public Licensing requirements will be met:
    ** http://www.trolltech.com/products/qt/opensource.html
    **
    ** If you are unsure which license is appropriate for your use, please
    ** review the following information:
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    ** sales department at sales@trolltech.com.
        **
        ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
        ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        **
        ****************************************************************************/

        #ifndef VARIANTDELEGATE_H
        #define VARIANTDELEGATE_H

        #include <QItemDelegate>
        #include <QRegExp>

        class VariantDelegate : public QItemDelegate
        {
            Q_OBJECT

        public:
            VariantDelegate(QObject *parent = 0);

            void paint(QPainter *painter, const QStyleOptionViewItem &option,
                       const QModelIndex &index) const;
            QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option,
                                  const QModelIndex &index) const;
            void setEditorData(QWidget *editor, const QModelIndex &index) const;
            void setModelData(QWidget *editor, QAbstractItemModel *model,
                              const QModelIndex &index) const;

            static bool isSupportedType(QVariant::Type type);
            static QString displayText(const QVariant &value);

        private slots:
            void commitAndCloseEditor();

        private:
            mutable QRegExp boolExp;
            mutable QRegExp byteArrayExp;
            mutable QRegExp charExp;
            mutable QRegExp colorExp;
            mutable QRegExp dateExp;
            mutable QRegExp dateTimeExp;
            mutable QRegExp doubleExp;
            mutable QRegExp pointExp;
            mutable QRegExp rectExp;
            mutable QRegExp signedIntegerExp;
            mutable QRegExp sizeExp;
            mutable QRegExp timeExp;
            mutable QRegExp unsignedIntegerExp;
        };

        #endif