do not allow zoom_level <= 0

spacetelescope · Jan 11, 2024 · 5a4cdeb · 5a4cdeb
1 parent 6d4a433
commit 5a4cdeb
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/jdaviz/core/template_mixin.py b/jdaviz/core/template_mixin.py
@@ -3373,6 +3373,11 @@ def _on_value_changed(self, msg):
                 helper = getattr(glue_state, f'{glue_name}_helper')
                 value = [choice for choice in helper.choices if str(choice) == msg['new']][0]
                 setattr(glue_state, glue_name, value)
+            elif glue_name in ('zoom_level') and msg['new'] <= 0:
+                # ignore if negative number (otherwise would fail)
+                self.value = msg['old']
+                self._processing_change_to_glue = False
+                return
             else:
                 setattr(glue_state, glue_name, msg['new'])