Display a QFileSystemModel in two Views: Tree View and a TableView/ListView of selected items

[maxwell31]

Hi,

I have a TreeView of a QFileSystemModel where I can select files for later use. I store the model indices of these files, and would like to show the selected files in a TableView. How could this be achieved?

[SGaist]

Hi,

You could use a custom QSortFilterProxyModel to filter out the elements not matching your selection.

[maxwell31]

Thanks. I thought about doing this. But I might not understand the QFileSystemModel right yet. If I do

bool filterAcceptsRow(int source_row, const QModelIndex &source_parent) const override {
    if(source_parent.data(FileSystemModel::IsCheckedRole)==true)
        return true;
    else
        return false;
}

And display the view as a TreeView nothing is shown, because the root node has IsCheckedRole false. The way I implemented IsCheckedRole is that my model simply contains a list of QModelIndex which stores the items for which IsCheckedRole is true (like this I could avoid walking through the tree). So the problem maybe is, that I have a hierarchical model but would only want a list in my second view.

[SGaist]

Why not pass it the selected model indexes from the selection model of your view and filter out everything that's not in that list ?