Initial cut at getting the stanzas to work.

(cherry picked from commit 8c7df49)

sleekxmpp/plugins/xep_0122/__init__.py

@@ -0,0 +1 @@
+from sleekxmpp.plugins.xep_0122.stanza import FormValidation

sleekxmpp/plugins/xep_0122/stanza.py

@@ -0,0 +1,83 @@
+
+from sleekxmpp.xmlstream import ElementBase, ET
+
+
+class FormValidation(ElementBase):
+    """
+    Validation values for form fields.
+
+    Example:
+
+    <field var='evt.date' type='text-single' label='Event Date/Time'>
+      <validate xmlns='http://jabber.org/protocol/xdata-validate'
+                datatype='xs:dateTime'/>
+      <value>2003-10-06T11:22:00-07:00</value>
+    </field>
+    """
+
+    namespace = 'http://jabber.org/protocol/xdata-validate'
+    name = 'validate'
+    plugin_attrib = 'validate'
+    interfaces = set(('datatype', 'basic', 'open', 'range', 'regex', ))
+    sub_interfaces = set(('basic', 'open', 'range', 'regex', ))
+    plugin_attrib_map = {}
+    plugin_tag_map = {}
+
+    def _add_field(self, name):
+        item_xml = ET.Element('{%s}%s' % (self.namespace, name))
+        self.xml.append(item_xml)
+        return item_xml
+
+    def set_basic(self, value):
+        self.remove_all()
+        if value:
+            self._add_field('basic')
+
+    def set_open(self, value):
+        self.remove_all()
+        if value:
+            self._add_field('open')
+
+    def set_regex(self, regex):
+        self.remove_all()
+        if regex:
+            _regex = self._add_field('regex')
+            _regex.text = regex
+
+    def set_range(self, value, minimum=None, maximum=None):
+        self.remove_all()
+        if value:
+            _range = self._add_field('range')
+            _range.attrib['min'] = str(minimum)
+            _range.attrib['max'] = str(maximum)
+
+    def remove_all(self, except_tag=None):
+        for a in self.sub_interfaces:
+            if a != except_tag:
+                del self[a]
+
+    def get_basic(self):
+        present = self.xml.find('{%s}basic' % self.namespace)
+        return present is not None
+
+    def get_open(self):
+        present = self.xml.find('{%s}open' % self.namespace)
+        return present is not None
+
+    def get_regex(self):
+        present = self.xml.find('{%s}regex' % self.namespace)
+        if present:
+            return present.text
+
+        return False
+
+    def get_range(self):
+        present = self.xml.find('{%s}regex' % self.namespace)
+        if present:
+            return dict(present.attrib)
+
+        return False
+
+
+FormValidation.getBasic = FormValidation.get_basic
+FormValidation.setBasic = FormValidation.set_basic