001/** 002 * 003 * Copyright 2014-2015 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.xdata; 018 019import java.util.Map; 020import java.util.WeakHashMap; 021 022import org.jivesoftware.smack.ConnectionCreationListener; 023import org.jivesoftware.smack.Manager; 024import org.jivesoftware.smack.SmackException.NoResponseException; 025import org.jivesoftware.smack.SmackException.NotConnectedException; 026import org.jivesoftware.smack.XMPPConnection; 027import org.jivesoftware.smack.XMPPConnectionRegistry; 028import org.jivesoftware.smack.XMPPException.XMPPErrorException; 029import org.jivesoftware.smackx.disco.ServiceDiscoveryManager; 030import org.jivesoftware.smackx.xdata.packet.DataForm; 031import org.jxmpp.jid.Jid; 032 033public final class XDataManager extends Manager { 034 035 /** 036 * The value of {@link DataForm#NAMESPACE}. 037 */ 038 public static final String NAMESPACE = DataForm.NAMESPACE; 039 040 static { 041 XMPPConnectionRegistry.addConnectionCreationListener(new ConnectionCreationListener() { 042 @Override 043 public void connectionCreated(XMPPConnection connection) { 044 getInstanceFor(connection); 045 } 046 }); 047 } 048 049 private static final Map<XMPPConnection, XDataManager> INSTANCES = new WeakHashMap<>(); 050 051 /** 052 * Get the XDataManager for the given XMPP connection. 053 * 054 * @param connection the XMPPConnection. 055 * @return the XDataManager 056 */ 057 public static synchronized XDataManager getInstanceFor(XMPPConnection connection) { 058 XDataManager xDataManager = INSTANCES.get(connection); 059 if (xDataManager == null) { 060 xDataManager = new XDataManager(connection); 061 INSTANCES.put(connection, xDataManager); 062 } 063 return xDataManager; 064 } 065 066 private XDataManager(XMPPConnection connection) { 067 super(connection); 068 ServiceDiscoveryManager serviceDiscoveryManager = ServiceDiscoveryManager.getInstanceFor(connection); 069 serviceDiscoveryManager.addFeature(NAMESPACE); 070 } 071 072 /** 073 * Check if the given entity supports data forms. 074 * 075 * @param jid the JID of the entity to check. 076 * @return true if the entity supports data forms. 077 * @throws NoResponseException 078 * @throws XMPPErrorException 079 * @throws NotConnectedException 080 * @throws InterruptedException 081 * @see <a href="http://xmpp.org/extensions/xep-0004.html#disco">XEP-0004: Data Forms ยง 6. Service Discovery</a> 082 * @since 4.1 083 */ 084 public boolean isSupported(Jid jid) throws NoResponseException, XMPPErrorException, NotConnectedException, InterruptedException { 085 return ServiceDiscoveryManager.getInstanceFor(connection()).supportsFeature(jid, NAMESPACE); 086 } 087}