/**
 *
 * 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;

import org.jivesoftware.smackx.xdata.packet.DataForm;

/**
 * Generic stanza extension which represents any PubSub form that is
 * parsed from the incoming stream or being sent out to the server.
 *
 * Form types are defined in {@link FormNodeType}.
 *
 * @author Robin Collier
 */
public class FormNode extends NodeExtension {
    private final DataForm configForm;

    /**
     * Create a {@link FormNode} which contains the specified form.
     *
     * @param formType The type of form being sent
     * @param submitForm The form
     */
    public FormNode(FormNodeType formType, DataForm submitForm) {
        this(formType, null, submitForm);
    }

    /**
     * Create a {@link FormNode} which contains the specified form, which is
     * associated with the specified node.
     *
     * @param formType The type of form being sent
     * @param nodeId The node the form is associated with
     * @param submitForm The form
     */
    public FormNode(FormNodeType formType, String nodeId, DataForm submitForm) {
        super(formType.getNodeElement(), nodeId);
        configForm = submitForm;
    }

    /**
     * Get the Form that is to be sent, or was retrieved from the server.
     *
     * @return The form
     */
    public DataForm getForm() {
        return configForm;
    }

    @Override
    protected void addXml(XmlStringBuilder xml) {
        if (configForm == null) {
            xml.closeEmptyElement();
            return;
        }

        xml.rightAngleBracket();
        xml.append(configForm);
        xml.closeElement(this);
    }

}