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/RetractItem.java

@@ -0,0 +1,59 @@
+/**
+ * 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;
+
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace;
+
+/**
+ * Represents and item that has been deleted from a node.
+ * 
+ * @author Robin Collier
+ */
+public class RetractItem implements PacketExtension
+{
+	private String id;
+
+	/**
+	 * Construct a <tt>RetractItem</tt> with the specified id.
+	 * 
+	 * @param itemId The id if the item deleted
+	 */
+	public RetractItem(String itemId)
+	{
+		if (itemId == null)
+			throw new IllegalArgumentException("itemId must not be 'null'");
+		id = itemId;
+	}
+	
+	public String getId()
+	{
+		return id;
+	}
+
+	public String getElementName()
+	{
+		return "retract";
+	}
+
+	public String getNamespace()
+	{
+		return PubSubNamespace.EVENT.getXmlns();
+	}
+
+	public String toXML()
+	{
+		return "<retract id='" + id + "'/>";
+	}
+}