Data method implementation in QStandardItemModel

ShinSat

Hi All,

Is there any hint to (re-)implement data method in QStandartItemModel used with QTreeView?
For some reasons, I need to control my QStandardItem array in the model such as highlighting/updating a specific row.
I have no luck so far with setIndexWidget and setData.
How can I return or set a QStandartItem in DisplayRole within the model?

Any ideas?

Many thanks in advance for your help.
Regards,
Sat

VRonin

@ShinSat said in data method implementation in QStandardItemModel:

highlighting/updating a specific row

void highlightRow(QAbstractItemModel* const mdl, int row, const QModelIndex& parent=QModelIndex()){
Q_ASSERT(!parent.isValid() || parent.model()==mdl);
Q_ASSERT(row>=0 && row<mdl->rowCount(parent));
const int colCount =mdl->columnCount(parent)
for(int i=0;i<colCount ;++i)
mdl->setData(mdl->index(row,i,parent),QBrush(Qt::red),Qt::BackgroundRole);
}
void unHighlightRow(QAbstractItemModel* const mdl, int row, const QModelIndex& parent=QModelIndex()){
Q_ASSERT(!parent.isValid() || parent.model()==mdl);
Q_ASSERT(row>=0 && row<mdl->rowCount(parent));
const int colCount =mdl->columnCount(parent)
for(int i=0;i<colCount ;++i)
mdl->setData(mdl->index(row,i,parent),QVariant(),Qt::BackgroundRole);
}

ShinSat

@VRonin Thanks for an update!
SO,,,, I can switch the two methods with QTimer or something, correct?
Also, one thing I'm not sure is if I can return QStandartItem from Displayrole of QStandartItemModel becaue it's not working in my environment, which is PyQt5.1 on Win7.
Is this a recommended or a proven way to handle custom QStandardItems between QStandardItemModel and QTreeView?

Sat

VRonin

@ShinSat said in data method implementation in QStandardItemModel:

if I can return QStandartItem from Displayrole of QStandartItemModel

You can but I don't see the point.
QStandartItemModel::data() calls QStandartItem::data(). Also, if you return QStandartItem for that role you'll also have to implement a custom delegate that can handle displaying QStandartItem

it's not working in my environment

In C++ you just need to use QVariant::fromValue but since it's a template I'm not sure how it translates to Python

JonB

@ShinSat

@Vronin wrote:

In C++ you just need to use QVariant::fromValue but since it's a template I'm not sure how it translates to Python

If you think you're having a Python/PyQt issue, post your Python/PyQt for this here and I'll have a look....