[Qt-qml] QSortFilterProxyModel with QML ListView

[Cornelius Hald]

Hi,

I've now managed to use my own data model together with a customized
QSortFilterProxyModel to provide sorting and searching for my QML UI. I
still have two open questions, though.

1) Is there a way to animate sorting? I have animations for inserting
and removing data and they are also used when filtering (very nice). But
I would also like to give the user some feedback about changed sorting
as well.

2) In my proxy class I have to call beginResetModel() and
endResetModel() around my sorting code. Otherwise the QML ListView does
not update itself. Is this really needed? I thought the
QSortFilterProxyModel class would take care about that itself. Making
the filter work doesn't need these calls.

My code looks like this:

SortedModel::SortedModel(QObject *parent) :
    QSortFilterProxyModel(parent)
{
}

void SortedModel::sortBy(QString roleName)
{
    beginResetModel(); // Do I really need that?
    if (roleName == "name") {
        setSortRole(MyModel::NameRole);
    } else if (roleName == "description") {
        setSortRole(MyModel::DescriptionRole);
    }
    endResetModel();
}

void SortedModel::search(QString search)
{
    setFilterCaseSensitivity(Qt::CaseInsensitive);
    setFilterRole(MyModel::NameRole);
    setFilterWildcard(search);
}

Thanks (again) :)
Conny