QItemDelegate use in QTableWidget

[arpspatel]

Hi,

delegate class

QCLDelegate::QCLDelegate(QObject *parent)
    : QItemDelegate(parent)              
{                                        
}                                        
 
QWidget *QCLDelegate::createEditor(QWidget *parent,
                                     const QStyleOptionViewItem & /* option */,
                                     const QModelIndex &index) const           
{                                                                              
    QComboBox *comboBox = new QComboBox(parent);                               
    if (index.column() == 2) {                                                 
        for(int i = 1970; i < 2014 ; i++){                                     
                QVariant v(i);                                                 
                comboBox->addItem(v.toString());                               
        }                                                                      
    } else if (index.column() == 3) {
        comboBox->addItem(tr("BRRip"));
        comboBox->addItem(tr("DVDRip"));
        comboBox->addItem(tr("Blu-Ray"));
        comboBox->addItem(tr("Other"));
    } else if (index.column() == 4) {
        comboBox->addItem(tr("Yes"));
        comboBox->addItem(tr("No"));
    }
    connect(comboBox, SIGNAL(activated(int)), this, SLOT(emitCommitData()));
 
    return comboBox;
}

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

QWidget *QCLDelegate::createEditor(QWidget *parent,
                                     const QStyleOptionViewItem & /* option */,
                                     const QModelIndex &index) const           
{                                                                              
    QComboBox *comboBox = new QComboBox(parent);                               
    if (index.column() == 2) {                                                 
        for(int i = 1970; i < 2014 ; i++){                                     
                QVariant v(i);                                                 
                comboBox->addItem(v.toString());                               
        }                                                                      
    } else if (index.column() == 3) {
        comboBox->addItem(tr("BRRip"));
        comboBox->addItem(tr("DVDRip"));
        comboBox->addItem(tr("Blu-Ray"));
        comboBox->addItem(tr("Other"));
    } else if (index.column() == 4) {
        comboBox->addItem(tr("Yes"));
        comboBox->addItem(tr("No"));
    }
    connect(comboBox, SIGNAL(activated(int)), this, SLOT(emitCommitData()));

    return comboBox;
}

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and here is how i add to the table widget

bool QCLMovies::parseElements(QDomNode &c, int row)
{
    while(!c.isNull()){
        QDomElement k = c.toElement();
        if(k.text().isEmpty())
            return false;
        if(labels.indexOf(k.tagName()) == -1)
            return false;
       //Adding to table widget
        setItem(row, labels.indexOf(k.tagName()), new QTableWidgetItem(k.text()));
        c = c.nextSibling();
    }
 
    return true;
}

bool QCLMovies::parseElements(QDomNode &c, int row)
{
    while(!c.isNull()){
        QDomElement k = c.toElement();
        if(k.text().isEmpty())
            return false;
        if(labels.indexOf(k.tagName()) == -1)
            return false;
       //Adding to table widget
        setItem(row, labels.indexOf(k.tagName()), new QTableWidgetItem(k.text()));
        c = c.nextSibling();
    }

    return true;
}

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the class declaration is QCLMovies: public QTableWidget

I am trying to read an XML file into the QTableWidget, with columns 2,3 and 4 as combo boxed and columns 0 and 1 as Qtablewidgetitem (QString), but when i start the application it shows all combo boxes..

Please help me out

Thanks

[spirit]

in QCLDelegate::createEditor you should write additional condition

QWidget *QCLDelegate::createEditor(QWidget *parent,
                                     const QStyleOptionViewItem & /* option */,
                                     const QModelIndex &index) const           
{
   if (index.column() == 2 || index.column() == 3 || index.column() == 4) {
      //creating and customization of comboboxes
      return comboBox;
   }
 
   return new QLineEdit(parent);
}

QWidget *QCLDelegate::createEditor(QWidget *parent,
                                     const QStyleOptionViewItem & /* option */,
                                     const QModelIndex &index) const           
{
   if (index.column() == 2 || index.column() == 3 || index.column() == 4) {
      //creating and customization of comboboxes
      return comboBox;
   }

   return new QLineEdit(parent);
}

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you also should be careful in other Delegate's method where an editor is used as method's parameter, you should cast each editor to concert type, because now you have two different editor's type -- QComboBox and QLineEdit.

[arpspatel]

Thanks it worked perfectly....