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/EventElement.java

@@ -0,0 +1,74 @@
+/**
+ * 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 java.util.Arrays;
+import java.util.List;
+
+import org.jivesoftware.smack.packet.PacketExtension;
+import org.jivesoftware.smackx.pubsub.packet.PubSubNamespace;
+
+/**
+ * Represents the top level element of a pubsub event extension.  All types of pubsub events are
+ * represented by this class.  The specific type can be found by {@link #getEventType()}.  The 
+ * embedded event information, which is specific to the event type, can be retrieved by the {@link #getEvent()}
+ * method.
+ * 
+ * @author Robin Collier
+ */
+public class EventElement implements EmbeddedPacketExtension
+{
+	private EventElementType type;
+	private NodeExtension ext;
+	
+	public EventElement(EventElementType eventType, NodeExtension eventExt)
+	{
+		type = eventType;
+		ext = eventExt;
+	}
+	
+	public EventElementType getEventType()
+	{
+		return type;
+	}
+
+	public List<PacketExtension> getExtensions()
+	{
+		return Arrays.asList(new PacketExtension[]{getEvent()});
+	}
+
+	public NodeExtension getEvent()
+	{
+		return ext;
+	}
+
+	public String getElementName()
+	{
+		return "event";
+	}
+
+	public String getNamespace()
+	{
+		return PubSubNamespace.EVENT.getXmlns();
+	}
+
+	public String toXML()
+	{
+		StringBuilder builder = new StringBuilder("<event xmlns='" + PubSubNamespace.EVENT.getXmlns() + "'>");
+
+		builder.append(ext.toXML());
+		builder.append("</event>");
+		return builder.toString();
+	}
+}