QTableView tab focus on cell widget

[hispeedsurfer]

Hello,

I have setup a QTableView with my own delegate to create a cell widget. This widget contains two QDateTimeEdit elements. My problem if I tab through date/time values of first widget is that the focus leave the cell after last time value, close the editor and enter the next cell.

How can I prevent this behavior and set focus to next QDateTimeEdit widget of the same cell?

[hispeedsurfer]

Here the dual value editor that is instantiated in delegate.createEditor method with

QWidget * QStyledItemDelegate::createEditor ( QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index )
{
    return new EvaDualValEditor(new QDateTimeEdit(parent), new QDateTimeEdit(parent), parent);
}

QWidget * QStyledItemDelegate::createEditor ( QWidget * parent, const QStyleOptionViewItem & option, const QModelIndex & index )
{
    return new EvaDualValEditor(new QDateTimeEdit(parent), new QDateTimeEdit(parent), parent);
}

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... and it looks like in table edit mode. After tabbing (cursor on blue marked) the editor is closed and the next cell is selected.
dualValEditor.jpg

// header
class EvaDualValEditor : public QWidget
{
 Q_OBJECT
 
public:
 explicit EvaDualValEditor(QWidget* editor1, QWidget* editor2, QWidget *parent = 0);
 ~EvaDualValEditor();
 
 void setValues( QVariant& param1, QVariant& param2 );
 
protected:
 
private:
 QHBoxLayout *horizontalLayout_2;
 QLabel *label;
 QWidget *wgt1;
 QLabel *label_2;
 QWidget *wgt2;
 
 void init();
};
 
// implementation
 
EvaDualValEditor::EvaDualValEditor(QWidget* editor1, QWidget* editor2, QWidget* parent /*= 0*/) 
 : QWidget(parent)
 , wgt1(editor1)
 , wgt2(editor2)
{
 init();
}
 
EvaDualValEditor::~EvaDualValEditor()
{
}
 
void EvaDualValEditor::init()
{
 
 setFocusPolicy (Qt::StrongFocus);
 setFocusProxy(wgt1);
 setTabOrder(wgt1, wgt2);setObjectName(QString::fromUtf8("EvaDualValEditor"));
 
 horizontalLayout_2 = new QHBoxLayout(this);
 horizontalLayout_2->setObjectName(QString::fromUtf8("horizontalLayout_2"));
 horizontalLayout_2->setSpacing(1);
 horizontalLayout_2->setContentsMargins(1, 1, 1, 1);
 
 label = new QLabel(this);
 label->setObjectName(QString::fromUtf8("label"));
 
 horizontalLayout_2->addWidget(label);
 
 wgt1->setObjectName(QString::fromUtf8("widget"));
 
 horizontalLayout_2->addWidget(wgt1);
 
 label_2 = new QLabel(this);
 label_2->setObjectName(QString::fromUtf8("label_2"));
 
 horizontalLayout_2->addWidget(label_2);
 
 wgt2->setObjectName(QString::fromUtf8("widget_2"));
 
 horizontalLayout_2->addWidget(wgt2);
 
}
 
void EvaDualValEditor::setValues( QVariant& param1, QVariant& param2 )
{
 if (wgt1 && !param1.isNull())
 {
  qobject_cast<QDateTimeEdit*>(wgt1)->setDateTime(param1.toDateTime());
 }
 if (wgt2 && !param2.isNull())
 {
  qobject_cast<QDateTimeEdit*>(wgt2)->setDateTime(param2.toDateTime());
 }
}

// header
class EvaDualValEditor : public QWidget
{
 Q_OBJECT

public:
 explicit EvaDualValEditor(QWidget* editor1, QWidget* editor2, QWidget *parent = 0);
 ~EvaDualValEditor();

 void setValues( QVariant& param1, QVariant& param2 );

protected:

private:
 QHBoxLayout *horizontalLayout_2;
 QLabel *label;
 QWidget *wgt1;
 QLabel *label_2;
 QWidget *wgt2;

 void init();
};

// implementation

EvaDualValEditor::EvaDualValEditor(QWidget* editor1, QWidget* editor2, QWidget* parent /*= 0*/) 
 : QWidget(parent)
 , wgt1(editor1)
 , wgt2(editor2)
{
 init();
}

EvaDualValEditor::~EvaDualValEditor()
{
}

void EvaDualValEditor::init()
{

 setFocusPolicy (Qt::StrongFocus);
 setFocusProxy(wgt1);
 setTabOrder(wgt1, wgt2);setObjectName(QString::fromUtf8("EvaDualValEditor"));

 horizontalLayout_2 = new QHBoxLayout(this);
 horizontalLayout_2->setObjectName(QString::fromUtf8("horizontalLayout_2"));
 horizontalLayout_2->setSpacing(1);
 horizontalLayout_2->setContentsMargins(1, 1, 1, 1);

 label = new QLabel(this);
 label->setObjectName(QString::fromUtf8("label"));

 horizontalLayout_2->addWidget(label);

 wgt1->setObjectName(QString::fromUtf8("widget"));

 horizontalLayout_2->addWidget(wgt1);
 
 label_2 = new QLabel(this);
 label_2->setObjectName(QString::fromUtf8("label_2"));

 horizontalLayout_2->addWidget(label_2);

 wgt2->setObjectName(QString::fromUtf8("widget_2"));

 horizontalLayout_2->addWidget(wgt2);

}

void EvaDualValEditor::setValues( QVariant& param1, QVariant& param2 )
{
 if (wgt1 && !param1.isNull())
 {
  qobject_cast<QDateTimeEdit*>(wgt1)->setDateTime(param1.toDateTime());
 }
 if (wgt2 && !param2.isNull())
 {
  qobject_cast<QDateTimeEdit*>(wgt2)->setDateTime(param2.toDateTime());
 }
}

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[Santosh Reddy]

Use

QTableView::setTabKeyNavigation(false);

QTableView::setTabKeyNavigation(false);

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[hispeedsurfer]

Hi,

here now a part of my solution.

Delegate

QWidget* TableDelegate::createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const
{
	if (index.row()%2 && (index.column()==1 || index.column()==2))
	{
		EvaDualValEditor* dualValEditor = new EvaDualValEditor(new QDateTimeEdit(parent), new QDateTimeEdit(parent), parent);
		connect(dualValEditor, SIGNAL(commitData(QWidget*)), this, SIGNAL(commitData(QWidget*)));
		connect(dualValEditor, SIGNAL(closeEditor(QWidget*, QAbstractItemDelegate::EndEditHint)), this, SIGNAL(closeEditor(QWidget*, QAbstractItemDelegate::EndEditHint)));
		return dualValEditor;
	}
	return QStyledItemDelegate::createEditor(parent, option, index);
}

QWidget* TableDelegate::createEditor( QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index ) const
{
	if (index.row()%2 && (index.column()==1 || index.column()==2))
	{
		EvaDualValEditor* dualValEditor = new EvaDualValEditor(new QDateTimeEdit(parent), new QDateTimeEdit(parent), parent);
		connect(dualValEditor, SIGNAL(commitData(QWidget*)), this, SIGNAL(commitData(QWidget*)));
		connect(dualValEditor, SIGNAL(closeEditor(QWidget*, QAbstractItemDelegate::EndEditHint)), this, SIGNAL(closeEditor(QWidget*, QAbstractItemDelegate::EndEditHint)));
		return dualValEditor;
	}
	return QStyledItemDelegate::createEditor(parent, option, index);
}

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DualValEditor

EvaDualValEditor::EvaDualValEditor( QWidget* editor1, QWidget* editor2, QWidget *parent)
	: QWidget(parent)
	, wgt1(editor1)
	, wgt2(editor2)
{
	if (editor1 && editor2)
	{
		init();
 
		setFocusPolicy(Qt::StrongFocus);
		setFocusProxy(wgt1);
		setTabOrder(wgt1, wgt2);
		wgt1->installEventFilter(this);
		wgt2->installEventFilter(this);
	}
}

EvaDualValEditor::EvaDualValEditor( QWidget* editor1, QWidget* editor2, QWidget *parent)
	: QWidget(parent)
	, wgt1(editor1)
	, wgt2(editor2)
{
	if (editor1 && editor2)
	{
		init();

		setFocusPolicy(Qt::StrongFocus);
		setFocusProxy(wgt1);
		setTabOrder(wgt1, wgt2);
		wgt1->installEventFilter(this);
		wgt2->installEventFilter(this);
	}
}

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bool EvaDualValEditor::focusNextPrevChild( bool next )
{
	Qt::FocusReason reason = next ? Qt::TabFocusReason : Qt::BacktabFocusReason;
 
	if (next)
	{
		if (wgt1->hasFocus())
		{
			wgt2->setFocus(reason);
			return true;
		} 
		else if(wgt2->hasFocus())
		{
			QWidget* tmp = focusProxy();
			setFocusProxy(wgt2);
			emit commitData(this);
			emit closeEditor(this, QAbstractItemDelegate::EditNextItem);
			setFocusProxy(tmp);
			return true;
		}
	}
	else if(!next)
	{
		if (wgt2->hasFocus())
		{
			wgt1->setFocus(reason);
			return true;
		} 
		else if(wgt1->hasFocus())
		{
			emit commitData(this);
			emit closeEditor(this, QAbstractItemDelegate::EditPreviousItem);
			return true;
		}
	}
 
	return QWidget::focusNextPrevChild(next);
}

bool EvaDualValEditor::focusNextPrevChild( bool next )
{
	Qt::FocusReason reason = next ? Qt::TabFocusReason : Qt::BacktabFocusReason;

	if (next)
	{
		if (wgt1->hasFocus())
		{
			wgt2->setFocus(reason);
			return true;
		} 
		else if(wgt2->hasFocus())
		{
			QWidget* tmp = focusProxy();
			setFocusProxy(wgt2);
			emit commitData(this);
			emit closeEditor(this, QAbstractItemDelegate::EditNextItem);
			setFocusProxy(tmp);
			return true;
		}
	}
	else if(!next)
	{
		if (wgt2->hasFocus())
		{
			wgt1->setFocus(reason);
			return true;
		} 
		else if(wgt1->hasFocus())
		{
			emit commitData(this);
			emit closeEditor(this, QAbstractItemDelegate::EditPreviousItem);
			return true;
		}
	}

	return QWidget::focusNextPrevChild(next);
}

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This works exactly as desired.