/**
 *
 * 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.Collections;
import java.util.List;

import org.jivesoftware.smack.packet.XmlElement;

import org.jivesoftware.smackx.pubsub.form.FilledConfigureForm;

/**
 * Represents the <b>configuration</b> element of a PubSub message event which
 * associates a configuration form to the node which was configured.  The form
 * contains the current node configuration.
 *
 * @author Robin Collier
 */
public class ConfigurationEvent extends NodeExtension implements EmbeddedPacketExtension {
    private final FilledConfigureForm form;

    public ConfigurationEvent(String nodeId) {
        this(nodeId, null);
    }

    public ConfigurationEvent(String nodeId, FilledConfigureForm configForm) {
        super(PubSubElementType.CONFIGURATION, nodeId);
        form = configForm;
    }

    public FilledConfigureForm getConfiguration() {
        return form;
    }

    @Override
    public List<XmlElement> getExtensions() {
        if (getConfiguration() == null)
            return Collections.emptyList();
        else
            return Arrays.asList((XmlElement) getConfiguration().getDataForm());
    }
}