Predictions: Fix crash when clicking on empty left area

biolab · Jan 29, 2021 · a447bc8 · a447bc8
1 parent 516d3d9
commit a447bc8
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/Orange/widgets/evaluate/owpredictions.py b/Orange/widgets/evaluate/owpredictions.py
@@ -1054,7 +1054,10 @@ def select(self, selection: Union[QModelIndex, QItemSelection], flags: int):
                 flags that tell whether to Clear, Select, Deselect or Toggle
         """
         if isinstance(selection, QModelIndex):
-            rows = {selection.model().mapToSource(selection).row()}
+            if selection.model() is not None:
+                rows = {selection.model().mapToSource(selection).row()}
+            else:
+                rows = set()
         else:
             indices = selection.indexes()
             if indices:
@@ -1108,6 +1111,8 @@ def map_from_source(rows):
         try:
             yield
         finally:
+            if self.proxy.sourceModel() is None:
+                return
             deselected = map_from_source(old_rows - self._rows)
             selected = map_from_source(self._rows - old_rows)
             if selected or deselected: