EventElement.java

/**
 *
 * Copyright the original author or authors
 *
 * 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.ExtensionElement;
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<ExtensionElement> getExtensions()
    {
        return Arrays.asList(new ExtensionElement[]{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();
    }
}