> > I'm trying to get selections on one view to be replicated to the
> > other[...]> So how do I connect things up so that selections on view1
> > are propagate through the proxy model, and then the respective indices
> > are selected in view2, and vice versa?
>
> Use QAbstractProxyModel::mapToSource() and mapFromSource(), or
> mapSelectionToSource() and mapSelectionFromSource().
>
> Eg:
> QObject::connect(
> sourceSelectionModel,
> &QItemSelectionModel::selectionChanged,
> proxySelectionModel,
> [&](const QItemSelection &set) {
> QItemSelection newSet = proxyModel->mapSelectionFromSource(set);
> proxySelectionModel->select(newSet,
> QItemSelectionModel::ClearAndSelect);
> });
>
> Repeat for each of the signals for QItemSelectionModel changes that should be
> mirrored, for each selection model. You can save some overhead by tracking
> which view originated the change, but QItemSelectionModel will detect empty
> change sets.
Thanks for the response. I ended up doing roughly the same thing.
I should have been more clear in my original post. I had found what looked like
the relevant signals/functions to do the mapping as you described above before
I
posted. I wanted to make sure that I wasn't missing something in the
model/selection model/proxy model system that AUTOMATICALLY made these
connections for you. It seemed to me like this would be a fairly common use
case -
having multiple views that have differing levels of proxies, all feeding off
from a
common underlying data model, and wanting selections to be shared among views,
once they are filtered through the proxies.
Sean
This message has been scanned for malware by Forcepoint. www.forcepoint.com
_______________________________________________
Interest mailing list
Interest@qt-project.org
https://lists.qt-project.org/listinfo/interest
