SMACK-272 Add support for XEP-0060 (pubsub)

git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@11346 b35dd754-fafc-0310-a699-88a17e54d16e

source/org/jivesoftware/smackx/pubsub/provider/RetractEventProvider.java

@@ -0,0 +1,38 @@
+/**
+ * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.jivesoftware.smackx.pubsub.provider;
+
+import java.util.List;
+import java.util.Map;
+
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smackx.provider.EmbeddedExtensionProvider;
+import org.jivesoftware.smackx.pubsub.RetractItem;
+
+/**
+ * Parses the <b>retract</b> element out of the message event stanza from 
+ * the server as specified in the <a href="http://xmpp.org/extensions/xep-0060.html#schemas-event">retract schema</a>.
+ * This element is a child of the <b>items</b> element.
+ * 
+ * @author Robin Collier
+ */
+public class RetractEventProvider extends EmbeddedExtensionProvider
+{
+	@Override
+	protected PacketExtension createReturnExtension(String currentElement, String currentNamespace, Map<String, String> attributeMap, List<? extends PacketExtension> content)
+	{
+		return new RetractItem(attributeMap.get("id"));
+	}
+
+}