You're calling set_selection before you call self.tree_view.setModel. I
would guess that is the problem.
Also I think you've missed "index" from the parameters you're passing to
view.select()
On Friday, 14 September 2018 09:25:40 UTC+10, kiteh wrote:
>
> I have the following QTreeView.
> I am trying to set the selection in the QTreeview based on the string I
> have derived - eg. '/users/Alice/people' and so the highlighted cell should
> only be 'people' that is listed under the Alice level.
>
> tree = {
> 'users': {
> "John" : ["graphics"],
> "Alice": ["book", "people"]
> }
> }
>
> class MainWindow(QtGui.QMainWindow):
> def __init__(self, parent=None):
> super(MainWindow, self).__init__(parent)
> self.tree_view = QtGui.QTreeView()
> self.setCentralWidget(self.tree_view)
> self.set_selection()
>
> self.model = QtGui.QStandardItemModel()
> self.populateTree(tree, self.model.invisibleRootItem())
> self.tree_view.setModel(self.model)
> self.tree_view.expandAll()
>
> def populateTree(self, children, parent):
> for child in children:
> child_item = QtGui.QStandardItem(child)
> parent.appendRow(child_item)
> if isinstance(children, dict):
> self.populateTree(children[child], child_item)
>
> def set_selection(self):
> to_set = "/user/Alice/people"
> view = self.tree_view.selectionModel()
> index = self.model.indexFromItem(to_set)
> view.select(QItemSelectionModel.Select|QItemSelectionModel.Rows)
>
>
> win = MainWindow()
> win.show()
>
>
> Initially I thought that `findItems` may work but unfortunately that is
> only for QTreeWidget.
> When I tried to do a `set_selection()`, I was prompted with an error that
> says "# AttributeError: 'NoneType' object has no attribute 'select' # ", it
> seems that the selectionModel is empty..
>
>
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