110 lines
3.8 KiB
Java
110 lines
3.8 KiB
Java
/**
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*
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* Copyright 2018 Paul Schaub
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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.reference;
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import java.util.ArrayList;
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import java.util.List;
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import java.util.Map;
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import java.util.WeakHashMap;
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import org.jivesoftware.smack.ConnectionCreationListener;
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import org.jivesoftware.smack.Manager;
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import org.jivesoftware.smack.XMPPConnection;
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import org.jivesoftware.smack.XMPPConnectionRegistry;
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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.smackx.disco.ServiceDiscoveryManager;
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import org.jivesoftware.smackx.reference.element.ReferenceElement;
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import org.jxmpp.jid.BareJid;
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public final class ReferenceManager extends Manager {
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public static final String NAMESPACE = "urn:xmpp:reference:0";
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private static final Map<XMPPConnection, ReferenceManager> INSTANCES = new WeakHashMap<>();
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static {
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XMPPConnectionRegistry.addConnectionCreationListener(new ConnectionCreationListener() {
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@Override
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public void connectionCreated(XMPPConnection connection) {
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getInstanceFor(connection);
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}
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});
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}
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private ReferenceManager(XMPPConnection connection) {
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super(connection);
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ServiceDiscoveryManager.getInstanceFor(connection).addFeature(NAMESPACE);
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}
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/**
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* Return a new instance of the ReferenceManager for the given connection.
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*
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* @param connection xmpp connection
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* @return reference manager instance
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*/
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public static ReferenceManager getInstanceFor(XMPPConnection connection) {
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ReferenceManager manager = INSTANCES.get(connection);
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if (manager == null) {
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manager = new ReferenceManager(connection);
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INSTANCES.put(connection, manager);
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}
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return manager;
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}
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/**
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* Add a reference to another users bare jid to a stanza.
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*
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* @param stanza stanza.
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* @param begin start index of the mention in the messages body.
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* @param end end index of the mention in the messages body.
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* @param jid referenced jid.
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*/
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public static void addMention(Stanza stanza, int begin, int end, BareJid jid) {
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ReferenceElement reference = new ReferenceElement(begin, end, ReferenceElement.Type.mention, null,
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"xmpp:" + jid.toString());
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stanza.addExtension(reference);
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}
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/**
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* Return a list of all reference extensions contained in a stanza.
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* If there are no reference elements, return an empty list.
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*
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* @param stanza stanza
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* @return list of all references contained in the stanza
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*/
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public static List<ReferenceElement> getReferencesFromStanza(Stanza stanza) {
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List<ReferenceElement> references = new ArrayList<>();
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List<ExtensionElement> extensions = stanza.getExtensions(ReferenceElement.ELEMENT, NAMESPACE);
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for (ExtensionElement e : extensions) {
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references.add((ReferenceElement) e);
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}
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return references;
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}
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/**
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* Return true, if the stanza contains at least one reference extension.
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*
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* @param stanza stanza
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* @return true if stanza contains references
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*/
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public static boolean containsReferences(Stanza stanza) {
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return getReferencesFromStanza(stanza).size() > 0;
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}
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}
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