Youre right. And furthermore, Ive done this.
For my task I had to put only one check box and it was supposed to be last item in the combo box.
So, now code for ItemDelegate looks like that:
@class CheckBoxListDelegate : public QItemDelegate
{
public:
CheckBoxListDelegate(QObject *parent) : QItemDelegate(parent)
{
}
void paint(QPainter *painter, const QStyleOptionViewItem &option,
const QModelIndex &index) const
{
//Get item data
int row_count = index.model()->rowCount(index.parent());
if(index.row() == --row_count)
{
bool value = index.data(Qt::UserRole).toBool();
QString text = index.data(Qt::DisplayRole).toString();
// fill style options with item data
const QStyle *style = QApplication::style();
QStyleOptionButton opt;
opt.state |= value ? QStyle::State_On : QStyle::State_Off;
opt.state |= QStyle::State_Enabled;
opt.text = text;
opt.rect = option.rect;
// draw item data as CheckBox
style->drawControl(QStyle::CE_CheckBox,&opt,painter);
return;
}
return QItemDelegate::paint(painter,option,index);
}
QWidget *createEditor(QWidget *parent,
const QStyleOptionViewItem & option ,
const QModelIndex & index ) const
{
int row_count = index.model()->rowCount(index.parent());
// create check box as our editor
if(index.row() == --row_count)
{
QCheckBox *editor = new QCheckBox(parent);
return editor;
}
return 0;
}
void setEditorData(QWidget *editor,
const QModelIndex &index) const
{
//set editor data
QCheckBox *myEditor = static_cast<QCheckBox*>(editor);
myEditor->setText(index.data(Qt::DisplayRole).toString());
myEditor->setChecked(index.data(Qt::UserRole).toBool());
}
void setModelData(QWidget *editor, QAbstractItemModel *model,
const QModelIndex &index) const
{
//get the value from the editor (CheckBox)
QCheckBox *myEditor = static_cast<QCheckBox*>(editor);
bool value = myEditor->isChecked();
//set model data
QMap<int,QVariant> data;
data.insert(Qt::DisplayRole,myEditor->text());
data.insert(Qt::UserRole,value);
model->setItemData(index,data);
}
}; @
