add ValueNotSet to ControlCombo

UmSenhorQualquer · Nov 7, 2018 · de6657f · de6657f
1 parent 7793364
commit de6657f
Showing 1 changed file with 5 additions and 3 deletions.
diff --git a/pyforms_gui/controls/control_combo.py b/pyforms_gui/controls/control_combo.py
@@ -10,6 +10,7 @@
 
 from pyforms_gui.controls.control_base import ControlBase
 
+class ValueNotSet: pass
 
 class ControlCombo(ControlBase, QWidget):
     """This class represents a wrapper to the combo box"""
@@ -65,9 +66,10 @@ def clear(self):
         self._value = None
         self._combo.clear()
 
-    def add_item(self, label, value=None):
+    def add_item(self, label, value=ValueNotSet):
         self._addingItem = True
-        if value is not None:
+
+        if value is not ValueNotSet:
             if not (value in self._items.values()):
                 self._combo.addItem(label)
         else:
@@ -78,7 +80,7 @@ def add_item(self, label, value=None):
         if self._items == {}:
             firstValue = True
 
-        if value is None:
+        if value is ValueNotSet:
             self._items[str(label)] = label
         else:
             self._items[str(label)] = value