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fe7d3bec30
Fixes SMACK-821.
154 lines
4.9 KiB
Java
154 lines
4.9 KiB
Java
/**
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*
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* Copyright 2013-2014 Georg Lukas, 2020 Florian Schmaus
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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.forward.packet;
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import java.util.ArrayList;
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import java.util.Collection;
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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.Message;
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import org.jivesoftware.smack.packet.Stanza;
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import org.jivesoftware.smack.util.Objects;
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import org.jivesoftware.smack.util.XmlStringBuilder;
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import org.jivesoftware.smackx.delay.packet.DelayInformation;
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/**
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* Stanza extension for XEP-0297: Stanza Forwarding.
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*
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* @author Georg Lukas
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* @see <a href="http://xmpp.org/extensions/xep-0297.html">XEP-0297: Stanza Forwarding</a>
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*/
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public class Forwarded<S extends Stanza> implements ExtensionElement {
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public static final String NAMESPACE = "urn:xmpp:forward:0";
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public static final String ELEMENT = "forwarded";
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public static final QName QNAME = new QName(NAMESPACE, ELEMENT);
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private final DelayInformation delay;
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private final S forwardedStanza;
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/**
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* Creates a new Forwarded stanza extension.
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*
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* @param delay an optional {@link DelayInformation} timestamp of the packet.
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* @param forwardedStanza the stanza that is forwarded (required).
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* @deprecated use {@link #Forwarded(Stanza, DelayInformation)} instead.
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*/
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@Deprecated
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public Forwarded(DelayInformation delay, S forwardedStanza) {
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this(forwardedStanza, delay);
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}
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/**
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* Creates a new Forwarded stanza extension.
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*
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* @param fwdPacket the stanza that is forwarded (required).
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*/
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public Forwarded(S fwdPacket) {
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this(fwdPacket, null);
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}
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/**
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* Creates a new Forwarded stanza extension.
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*
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* @param forwardedStanza the stanza that is forwarded (required).
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* @param delay an optional {@link DelayInformation} timestamp of the packet.
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*/
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public Forwarded(S forwardedStanza, DelayInformation delay) {
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this.forwardedStanza = Objects.requireNonNull(forwardedStanza);
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this.delay = delay;
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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, enclosingNamespace);
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xml.rightAngleBracket();
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xml.optElement(getDelayInformation());
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xml.append(forwardedStanza);
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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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* Get the forwarded Stanza found in this extension.
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*
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* @return the {@link Stanza} (typically a message) that was forwarded.
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*/
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public S getForwardedStanza() {
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return forwardedStanza;
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}
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/**
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* get the timestamp of the forwarded packet.
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*
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* @return the {@link DelayInformation} representing the time when the original stanza was sent. May be null.
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*/
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public DelayInformation getDelayInformation() {
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return delay;
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}
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/**
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* Check if this is forwarding a stanza of the provided class.
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*
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* @param stanzaClass the class to check for.
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* @return <code>true</code> if this is forwarding a stanza of the provided class.
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* @since 4.4
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*/
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public boolean isForwarded(Class<? extends Stanza> stanzaClass) {
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return stanzaClass.isAssignableFrom(forwardedStanza.getClass());
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}
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/**
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* Get the forwarded extension.
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* @param packet TODO javadoc me please
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* @return the Forwarded extension or null
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*/
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public static Forwarded<?> from(Stanza packet) {
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return packet.getExtension(Forwarded.class);
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}
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/**
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* Extract messages in a collection of forwarded elements. Note that it is required that the {@link Forwarded} in
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* the given collection only contain {@link Message} stanzas.
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*
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* @param forwardedCollection the collection to extract from.
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* @return a list a the extracted messages.
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* @since 4.3.0
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*/
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public static List<Message> extractMessagesFrom(Collection<Forwarded<Message>> forwardedCollection) {
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List<Message> res = new ArrayList<>(forwardedCollection.size());
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for (Forwarded<Message> forwarded : forwardedCollection) {
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Message message = forwarded.getForwardedStanza();
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res.add(message);
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}
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return res;
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}
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}
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