1 files changed, 26 insertions, 21 deletions
diff --git a/sleekxmpp/plugins/xep_0060/stanza/base.py b/sleekxmpp/plugins/xep_0060/stanza/base.py
index 9b1efe1b..d0b7851e 100644
--- a/sleekxmpp/plugins/xep_0060/stanza/base.py
+++ b/sleekxmpp/plugins/xep_0060/stanza/base.py
@@ -1,24 +1,29 @@
-from xml.etree import cElementTree as ET
+"""
+    SleekXMPP: The Sleek XMPP Library
+    Copyright (C) 2011  Nathanael C. Fritz
+    This file is part of SleekXMPP.
+
+    See the file LICENSE for copying permission.
+"""
+
+from sleekxmpp.xmlstream import ET
+
 
 class OptionalSetting(object):
-	interfaces = set(('required',))
-
-	def setRequired(self, value):
-		value = bool(value)
-		if value and not self['required']:
-			self.xml.append(ET.Element("{%s}required" % self.namespace))
-		elif not value and self['required']:
-			self.delRequired()
-	
-	def getRequired(self):
-		required = self.xml.find("{%s}required" % self.namespace)
-		if required is not None:
-			return True
-		else:
-			return False
-	
-	def delRequired(self):
-		required = self.xml.find("{%s}required" % self.namespace)
-		if required is not None:
-			self.xml.remove(required)
 
+    interfaces = set(('required',))
+
+    def set_required(self, value):
+        if value in (True, 'true', 'True', '1'):
+            self.xml.append(ET.Element("{%s}required" % self.namespace))
+        elif self['required']:
+            self.del_required()
+
+    def get_required(self):
+        required = self.xml.find("{%s}required" % self.namespace)
+        return required is not None
+
+    def del_required(self):
+        required = self.xml.find("{%s}required" % self.namespace)
+        if required is not None:
+            self.xml.remove(required)