83 lines
2.4 KiB
Java
83 lines
2.4 KiB
Java
/**
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*
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* Copyright the original author or authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smackx.shim.packet;
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import java.util.Collections;
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import java.util.List;
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import javax.xml.namespace.QName;
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import org.jivesoftware.smack.packet.ExtensionElement;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smack.util.XmlStringBuilder;
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/**
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* Extension representing a list of headers as specified in <a href="http://xmpp.org/extensions/xep-0131">Stanza Headers and Internet Metadata (SHIM)</a>.
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*
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* @see Header
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*
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* @author Robin Collier
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*/
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public class HeadersExtension implements ExtensionElement {
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public static final String ELEMENT = "headers";
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public static final String NAMESPACE = "http://jabber.org/protocol/shim";
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public static final QName QNAME = new QName(NAMESPACE, ELEMENT);
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private final List<Header> headers;
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public HeadersExtension(List<Header> headerList) {
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if (headerList != null) {
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headers = Collections.unmodifiableList(headerList);
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} else {
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headers = Collections.emptyList();
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}
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}
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public List<Header> getHeaders() {
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return headers;
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}
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@Override
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public String getElementName() {
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return ELEMENT;
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}
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@Override
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public String getNamespace() {
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return NAMESPACE;
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}
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@Override
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public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) {
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XmlStringBuilder xml = new XmlStringBuilder(this);
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xml.rightAngleBracket();
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xml.append(headers);
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xml.closeElement(this);
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return xml;
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}
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/**
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* Return the SHIM headers extension of this stanza or null if there is none.
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*
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* @param packet TODO javadoc me please
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* @return the headers extension or null.
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*/
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public static HeadersExtension from(Stanza packet) {
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return packet.getExtension(HeadersExtension.class);
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}
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}
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