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 **
 ** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
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 /*
     delegate.cpp

     A delegate that allows the user to change integer values from the model
     using a spin box widget.
 */

 #include &lt;QtGui&gt;

 #include &quot;delegate.h&quot;

 SpinBoxDelegate::SpinBoxDelegate(QObject *parent)
     : QItemDelegate(parent)
 {
 }

 QWidget *SpinBoxDelegate::createEditor(QWidget *parent,
     const QStyleOptionViewItem &amp;/* option */,
     const QModelIndex &amp;/* index */) const
 {
     QSpinBox *editor = new QSpinBox(parent);
     editor-&gt;setMinimum(0);
     editor-&gt;setMaximum(100);
     editor-&gt;installEventFilter(const_cast&lt;SpinBoxDelegate*&gt;(this));

     return editor;
 }

 void SpinBoxDelegate::setEditorData(QWidget *editor,
                                     const QModelIndex &amp;index) const
 {
     int value = index.model()-&gt;data(index, Qt::DisplayRole).toInt();

     QSpinBox *spinBox = static_cast&lt;QSpinBox*&gt;(editor);
     spinBox-&gt;setValue(value);
 }

 void SpinBoxDelegate::setModelData(QWidget *editor, QAbstractItemModel *model,
                                    const QModelIndex &amp;index) const
 {
     QSpinBox *spinBox = static_cast&lt;QSpinBox*&gt;(editor);
     spinBox-&gt;interpretText();
     int value = spinBox-&gt;value();

     model-&gt;setData(index, value);
 }

 void SpinBoxDelegate::updateEditorGeometry(QWidget *editor,
     const QStyleOptionViewItem &amp;option, const QModelIndex &amp;/* index */) const
 {
     editor-&gt;setGeometry(option.rect);
 }</pre>
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