91 lines
3.0 KiB
Java
91 lines
3.0 KiB
Java
/**
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*
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* Copyright © 2016 Fernando Ramirez
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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.chat_markers;
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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.SmackException.NoResponseException;
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import org.jivesoftware.smack.SmackException.NotConnectedException;
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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.XMPPException.XMPPErrorException;
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import org.jivesoftware.smackx.chat_markers.element.ChatMarkersElements;
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import org.jivesoftware.smackx.disco.ServiceDiscoveryManager;
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/**
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* Chat Markers Manager class (XEP-0333).
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*
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* @see <a href="http://xmpp.org/extensions/xep-0333.html">XEP-0333: Chat
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* Markers</a>
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* @author Fernando Ramirez
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*
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*/
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public final class ChatMarkersManager extends Manager {
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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 static final Map<XMPPConnection, ChatMarkersManager> INSTANCES = new WeakHashMap<>();
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/**
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* Get the singleton instance of ChatMarkersManager.
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*
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* @param connection
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* @return the instance of ChatMarkersManager
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*/
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public static synchronized ChatMarkersManager getInstanceFor(XMPPConnection connection) {
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ChatMarkersManager chatMarkersManager = INSTANCES.get(connection);
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if (chatMarkersManager == null) {
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chatMarkersManager = new ChatMarkersManager(connection);
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INSTANCES.put(connection, chatMarkersManager);
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}
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return chatMarkersManager;
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}
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private ChatMarkersManager(XMPPConnection connection) {
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super(connection);
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}
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/**
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* Returns true if Chat Markers is supported by the server.
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*
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* @return true if Chat Markers is supported by the server.
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* @throws NotConnectedException
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* @throws XMPPErrorException
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* @throws NoResponseException
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* @throws InterruptedException
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*/
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public boolean isSupportedByServer()
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throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException {
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return ServiceDiscoveryManager.getInstanceFor(connection())
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.serverSupportsFeature(ChatMarkersElements.NAMESPACE);
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}
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}
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