Multiple QListViews with one QAbstratListModel

tesmai4

Dear all,

I have one QAbstractListModel and I it in two QListViews in different ways. First QListView is a pop-up and will display only a selection of the items in QAbstractListModel. I hide this view when escape key is pressed. Whereas, second QListView is part of the QMainWindow and will display all items in the QAbstractListModel.

I am stuck at two points:

How to make selection from QAbstractListModel for the first QListView?
I need to clear the items displayed in second QListView when escape key is pressed for hiding the first QListView.

any idea how t o do this? Any little help will be appreciated.

mcosta

Hi,

for the first QListView you should use a QSortFilterProxyModel in order to filter data to show.

I not understand question about clear data

poorBob

Can You show us a little code?

How to make selection from QAbstractListModel for the first QListView?:
Did You read this: "Sharing selections among views in Qt's MVC":https://qt-project.org/doc/qt-4.8/model-view-programming.html#sharing-selections-among-views ? And as mcosta wrote You should use the QSorFilterProxyModel
I need to clear the items displayed in second QListView when escape key is pressed for hiding the first QListView.
I don't understand this at all...

tesmai4

Thanks for your reply. Below is the code snippen for making selection QAbstractlistmodel
@
Class myframe : public QFame
{
...
...
...
private:
QItemSelectionModel *mpSelectionModel;
ListModel *mpListModel;
ListView *mpListView;
...
...
...
};
myframe()
{

mpListModel = new ListModel(this);
mpListView->setModel(mpListModel);
mpSelectionModel = mpListView->selectionModel();
mpListView->populateListView(mpListModel);
}
@

in my hide function, I am not clearing the listmodel from the listview. I simply hide it. I have a clear function that removes items from ListModel, however, this function is not removing the contents..
What can I do?

mcosta

Hi,

I still don't understand; when you update model (if correctly done) the view automatically update its contents.

This code works good for me
@
void ModelViewWidget::on_clearButton_clicked()
{
int rowCount = m_model->rowCount();

m_model->removeRows(0, rowCount);

}
@

If you implemented your model you must pay attention to reimplements removeRows

read "here":http://qt-project.org/doc/qt-5.0/qtcore/qabstractitemmodel.html#beginRemoveRows for details