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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@13325 b35dd754-fafc-0310-a699-88a17e54d16e
145 lines
5.3 KiB
Java
145 lines
5.3 KiB
Java
/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright 2003-2007 Jive Software.
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*
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* All rights reserved. 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;
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import org.jivesoftware.smack.ConnectionCreationListener;
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import org.jivesoftware.smack.Connection;
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import org.jivesoftware.smack.XMPPException;
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import org.jivesoftware.smack.packet.Message;
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import org.jivesoftware.smackx.packet.DiscoverInfo;
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import org.jivesoftware.smackx.packet.XHTMLExtension;
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import java.util.Iterator;
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/**
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* Manages XHTML formatted texts within messages. A XHTMLManager provides a high level access to
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* get and set XHTML bodies to messages, enable and disable XHTML support and check if remote XMPP
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* clients support XHTML.
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*
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* @author Gaston Dombiak
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*/
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public class XHTMLManager {
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private final static String namespace = "http://jabber.org/protocol/xhtml-im";
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// Enable the XHTML support on every established connection
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// The ServiceDiscoveryManager class should have been already initialized
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static {
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Connection.addConnectionCreationListener(new ConnectionCreationListener() {
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public void connectionCreated(Connection connection) {
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XHTMLManager.setServiceEnabled(connection, true);
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}
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});
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}
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/**
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* Returns an Iterator for the XHTML bodies in the message. Returns null if
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* the message does not contain an XHTML extension.
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*
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* @param message an XHTML message
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* @return an Iterator for the bodies in the message or null if none.
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*/
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public static Iterator<String> getBodies(Message message) {
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XHTMLExtension xhtmlExtension = (XHTMLExtension) message.getExtension("html", namespace);
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if (xhtmlExtension != null)
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return xhtmlExtension.getBodies();
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else
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return null;
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}
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/**
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* Adds an XHTML body to the message.
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*
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* @param message the message that will receive the XHTML body
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* @param body the string to add as an XHTML body to the message
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*/
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public static void addBody(Message message, String body) {
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XHTMLExtension xhtmlExtension = (XHTMLExtension) message.getExtension("html", namespace);
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if (xhtmlExtension == null) {
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// Create an XHTMLExtension and add it to the message
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xhtmlExtension = new XHTMLExtension();
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message.addExtension(xhtmlExtension);
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}
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// Add the required bodies to the message
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xhtmlExtension.addBody(body);
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}
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/**
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* Returns true if the message contains an XHTML extension.
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*
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* @param message the message to check if contains an XHTML extentsion or not
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* @return a boolean indicating whether the message is an XHTML message
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*/
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public static boolean isXHTMLMessage(Message message) {
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return message.getExtension("html", namespace) != null;
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}
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/**
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* Enables or disables the XHTML support on a given connection.<p>
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*
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* Before starting to send XHTML messages to a user, check that the user can handle XHTML
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* messages. Enable the XHTML support to indicate that this client handles XHTML messages.
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*
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* @param connection the connection where the service will be enabled or disabled
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* @param enabled indicates if the service will be enabled or disabled
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*/
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public synchronized static void setServiceEnabled(Connection connection, boolean enabled) {
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if (isServiceEnabled(connection) == enabled)
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return;
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if (enabled) {
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ServiceDiscoveryManager.getInstanceFor(connection).addFeature(namespace);
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}
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else {
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ServiceDiscoveryManager.getInstanceFor(connection).removeFeature(namespace);
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}
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}
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/**
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* Returns true if the XHTML support is enabled for the given connection.
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*
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* @param connection the connection to look for XHTML support
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* @return a boolean indicating if the XHTML support is enabled for the given connection
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*/
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public static boolean isServiceEnabled(Connection connection) {
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return ServiceDiscoveryManager.getInstanceFor(connection).includesFeature(namespace);
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}
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/**
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* Returns true if the specified user handles XHTML messages.
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*
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* @param connection the connection to use to perform the service discovery
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* @param userID the user to check. A fully qualified xmpp ID, e.g. jdoe@example.com
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* @return a boolean indicating whether the specified user handles XHTML messages
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*/
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public static boolean isServiceEnabled(Connection connection, String userID) {
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try {
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DiscoverInfo result =
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ServiceDiscoveryManager.getInstanceFor(connection).discoverInfo(userID);
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return result.containsFeature(namespace);
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}
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catch (XMPPException e) {
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e.printStackTrace();
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return false;
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}
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}
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}
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