/**
 *
 * 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 org.jivesoftware.smack.util.XmlStringBuilder;


/**
 * Represents an unsubscribe element.
 * 
 * @author Robin Collier
 */
public class UnsubscribeExtension extends NodeExtension {
    protected String jid;
    protected String id;

    public UnsubscribeExtension(String subscriptionJid) {
        this(subscriptionJid, null, null);
    }

    public UnsubscribeExtension(String subscriptionJid, String nodeId) {
        this(subscriptionJid, nodeId, null);
    }

    public UnsubscribeExtension(String jid, String nodeId, String subscriptionId) {
        super(PubSubElementType.UNSUBSCRIBE, nodeId);
        this.jid = jid;
        id = subscriptionId;
    }

    public String getJid() {
        return jid;
    }

    public String getId() {
        return id;
    }

    @Override
    public XmlStringBuilder toXML() {
        XmlStringBuilder xml = new XmlStringBuilder();
        xml.halfOpenElement(getElementName());
        xml.attribute("jid", jid);
        xml.optAttribute("node", getNode());
        xml.optAttribute("subid", id);
        xml.closeEmptyElement();
        return xml;
    }
}