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;
021
022import org.jivesoftware.smackx.csi.packet.ClientStateIndication;
023
024/**
025 * Manager for Client State Indication.
026 *
027 * @see <a href="http://xmpp.org/extensions/xep-0352.html">XEP-0352: Client State Indication</a>
028 *
029 */
030public class ClientStateIndicationManager {
031
032    public static void active(XMPPConnection connection) throws NotConnectedException, InterruptedException {
033        throwIaeIfNotSupported(connection);
034        connection.sendNonza(ClientStateIndication.Active.INSTANCE);
035    }
036
037    public static void inactive(XMPPConnection connection) throws NotConnectedException, InterruptedException {
038        throwIaeIfNotSupported(connection);
039        connection.sendNonza(ClientStateIndication.Inactive.INSTANCE);
040    }
041
042    public static boolean isSupported(XMPPConnection connection) {
043        return connection.hasFeature(ClientStateIndication.Feature.ELEMENT, ClientStateIndication.NAMESPACE);
044    }
045
046    private static void throwIaeIfNotSupported(XMPPConnection connection) {
047        if (!isSupported(connection)) {
048            throw new IllegalArgumentException("Client State Indication not supported by server");
049        }
050    }
051}