org.jivesoftware.smackx.last_interaction.element.IdleElement Maven / Gradle / Ivy
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Smack extensions.
Classes and methods that implement support for the various XMPP XEPs
(Multi-User Chat, PubSub, …) and other XMPP extensions.
/**
*
* Copyright © 2018 Paul Schaub
*
* 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.last_interaction.element;
import java.util.Date;
import javax.xml.namespace.QName;
import org.jivesoftware.smack.packet.ExtensionElement;
import org.jivesoftware.smack.packet.Presence;
import org.jivesoftware.smack.util.Objects;
import org.jivesoftware.smack.util.XmlStringBuilder;
public class IdleElement implements ExtensionElement {
public static final String NAMESPACE = "urn:xmpp:idle:1";
public static final String ELEMENT = "idle";
public static final QName QNAME = new QName(NAMESPACE, ELEMENT);
public static final String ATTR_SINCE = "since";
private final Date since;
/**
* Create a new IdleElement with the current date as date of last user interaction.
*/
public IdleElement() {
this(new Date());
}
/**
* Create a new IdleElement.
* @param since date of last user interaction
*/
public IdleElement(Date since) {
this.since = Objects.requireNonNull(since);
}
/**
* Return the value of last user interaction.
* @return date of last interaction
*/
public Date getSince() {
return since;
}
/**
* Add an Idle element with current date to the presence.
* @param presence presence
*/
public static void addToPresence(Presence presence) {
presence.addExtension(new IdleElement());
}
/**
* Return the IdleElement from a presence.
* Returns null, if no IdleElement found.
*
* @param presence presence
* @return idleElement from presence or null
*/
public static IdleElement fromPresence(Presence presence) {
return presence.getExtension(IdleElement.class);
}
/**
* {@inheritDoc}
*/
@Override
public String getNamespace() {
return NAMESPACE;
}
/**
* {@inheritDoc}
*/
@Override
public String getElementName() {
return ELEMENT;
}
/**
* {@inheritDoc}
*/
@Override
public XmlStringBuilder toXML(org.jivesoftware.smack.packet.XmlEnvironment enclosingNamespace) {
return new XmlStringBuilder(this)
.attribute(ATTR_SINCE, since)
.closeEmptyElement();
}
}
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