QItemDelegate::createEditor runs 2 times in first edition

scastiello

Hi all,

I'm having problems with implementation of a delegate on a QTreeView. Through the delegate I'm creating an editor who works as a toggle so that with a single click the delegate must create the editor, change the status and close the editor.

It is working properly, but the first time the state is edited, QItemDelegate::createEditor running twice simultaneous, and this makes the toggle remains in the same state for the first time.

I have refined to meet that is due and only sack clear that occurs and events mousePressed mouseReleased.

This is the code of the delegate:

void MyItemDelegate::paint(QPainter *painter,
        const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if ((index.column() == 1))
    {
        QStyleOptionButton buttonOption;
        buttonOption.rect = option.rect;
        buttonOption.state = option.state;
        buttonOption.text = index.model()->data(index).toString();
        buttonOption.palette.setColor(QPalette::ButtonText, buttonOption.text == "Close" ? Qt::red : Qt::darkGreen);
        buttonOption.state |= QStyle::State_None;

        QApplication::style()->drawControl(QStyle::CE_PushButton, &buttonOption,
                painter);
    }
    else
    {
        QItemDelegate::paint(painter, option, index);
    }
}

QWidget* MyItemDelegate::createEditor(QWidget *parent,
        const QStyleOptionViewItem &option, const QModelIndex &index) const
{
    if ((index.column() == 1))
    {
        QPushButton* pushButton = new QPushButton(parent);
        //connect(pushButton, SIGNAL(clicked()), this, SLOT(wasClicked()));
        return pushButton;
    }
    else
    {
        return QItemDelegate::createEditor(parent, option, index);
    }
}

bool MyItemDelegate::editorEvent(QEvent *event,
        QAbstractItemModel *model, const QStyleOptionViewItem &option,
        const QModelIndex &index)
{
    if (event->type() == QEvent::MouseButtonRelease)
    {
        event->ignore();
        return false;
    }
    else
    {
        return QItemDelegate::editorEvent(event, model, option, index);
    }
}

bool MyItemDelegate::eventFilter(QObject *editor, QEvent *event)
{
    bool ret = QItemDelegate::eventFilter(editor, event);
    QPushButton *pushButton = static_cast<QPushButton*>(editor);
    emit commitData(pushButton);
    emit closeEditor(pushButton);
    return ret;
}

void MyItemDelegate::setEditorData(QWidget *editor,
        const QModelIndex &index) const
{
    if ((index.column() == 1))
    {
        QVariant value = index.model()->data(index);
        QPushButton* pushButton = static_cast<QPushButton*>(editor);
        pushButton->setText(value.toString());
        QString color = QString::fromStdString(value.toString() == "Close" ? "red": "darkgreen");
        pushButton->setStyleSheet(QString("QPushButton{ color:" + color + ";}"));
        //pushButton->click();
    }
    else
    {
        QItemDelegate::setEditorData(editor, index);
    }
}

void MyItemDelegate::setModelData(QWidget *editor,
        QAbstractItemModel *model, const QModelIndex &index) const
{
    if ((index.column() == 1))
    {
        QPushButton* pushButton = static_cast<QPushButton*>(editor);
        pushButton->setText(pushButton->text() == "Close" ? "Open" : "Close");
        QVariant value = pushButton->text() == "Close" ? true : false;
        model->setData(index, value);
    }
    else
    {
        QItemDelegate::setModelData(editor, model, index);
    }
}

Can anyone explain to me that it is because the first run twice simultaneous?

Thanks

cimer84

I have the same problem.
Does anybody have any solution?
Thank you.