def __item_selection_changed(self, tree_view: QtWidgets.QTreeView):
"""Manager vor item selection of three views."""
item = tree_view.currentItem()
if item is None:
return
pi.logger.debug("RevPiFiles.__itemSelectionChanged")
# Block while preselect other entries
tree_view.blockSignals(True)
if item.type() == NodeType.DIR:
self._select_children(item, item.isSelected())
elif item.type() == NodeType.FILE:
self._parent_selection_state(item)
tree_view.blockSignals(False)
self._set_gui_control_states()
