Better None checks on properties lookup.

geemap/map_widgets.py

@@ -434,18 +434,19 @@ def last_feature(self):
     def count(self):
         return len(self.geometries)
 
-    def reset(self, clear_draw_control=True):
+    def reset(self):
         """Resets the draw controls."""
         if self.layer is not None:
             self.host_map.remove_layer(self.layer)
         self.geometries = []
         self.properties = []
         self.last_geometry = None
         self.layer = None
-        if clear_draw_control:
-            self._clear_draw_control()
+        self._clear_draw_control()
 
     def remove_geometry(self, geometry):
+        if not geometry:
+            return
         index = self.geometries.index(geometry)
         if index >= 0:
             del self.geometries[index]
@@ -459,13 +460,17 @@ def remove_geometry(self, geometry):
                 self._redraw_layer()
 
     def get_geometry_properties(self, geometry):
+        if not geometry:
+            return None
         index = self.geometries.index(geometry)
         if index >= 0:
             return self.properties[index]
         else:
             return None
 
     def set_geometry_properties(self, geometry, property):
+        if not geometry:
+            return
         index = self.geometries.index(geometry)
         if index >= 0:
             self.properties[index] = property