added enable/disable and clear method

settings.py

@@ -86,4 +86,16 @@ class Setting:
             self.text.Disable()
 
 
+#    def enable(self):
+#        self.state.SetValue(True)
+#        self.text.Enable()
+
+    def disable(self):
+        self.state.SetValue(False)
+        self.text.Disable()
+
+    def clear(self):
+        self.text.clear()
+
+