001/**
002 *
003 * Copyright © 2014 Florian Schmaus
004 *
005 * Licensed under the Apache License, Version 2.0 (the "License");
006 * you may not use this file except in compliance with the License.
007 * You may obtain a copy of the License at
008 *
009 *     http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.jivesoftware.smackx.csi;
018
019import org.jivesoftware.smack.SmackException.NotConnectedException;
020import org.jivesoftware.smack.XMPPConnection;
021import org.jivesoftware.smackx.csi.packet.ClientStateIndication;
022
023/**
024 * 
025 * @see <a href="http://xmpp.org/extensions/xep-0352.html">XEP-0352: Client State Indication</a>
026 *
027 */
028public class ClientStateIndicationManager {
029
030    public static void active(XMPPConnection connection) throws NotConnectedException {
031        throwIaeIfNotSupported(connection);
032        connection.send(ClientStateIndication.Active.INSTANCE);
033    }
034
035    public static void inactive(XMPPConnection connection) throws NotConnectedException {
036        throwIaeIfNotSupported(connection);
037        connection.send(ClientStateIndication.Inactive.INSTANCE);
038    }
039
040    public static boolean isSupported(XMPPConnection connection) {
041        return connection.hasFeature(ClientStateIndication.Feature.ELEMENT, ClientStateIndication.NAMESPACE);
042    }
043
044    private static void throwIaeIfNotSupported(XMPPConnection connection) {
045        if (!isSupported(connection)) {
046            throw new IllegalArgumentException("Client State Indication not supported by server");
047        }
048    }
049}