709 lines
22 KiB
Java
709 lines
22 KiB
Java
/**
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*
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* Copyright 2003-2007 Jive Software.
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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.smack.packet;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Locale;
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import java.util.Set;
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import org.jivesoftware.smack.util.TypedCloneable;
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import org.jivesoftware.smack.util.XmlStringBuilder;
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import org.jxmpp.jid.Jid;
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import org.jxmpp.jid.impl.JidCreate;
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import org.jxmpp.stringprep.XmppStringprepException;
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/**
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* Represents XMPP message packets. A message can be one of several types:
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*
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* <ul>
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* <li>Message.Type.NORMAL -- (Default) a normal text message used in email like interface.
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* <li>Message.Type.CHAT -- a typically short text message used in line-by-line chat interfaces.
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* <li>Message.Type.GROUP_CHAT -- a chat message sent to a groupchat server for group chats.
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* <li>Message.Type.HEADLINE -- a text message to be displayed in scrolling marquee displays.
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* <li>Message.Type.ERROR -- indicates a messaging error.
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* </ul>
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*
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* For each message type, different message fields are typically used as follows:
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* <p>
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* <table border="1">
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* <caption>Message Types</caption>
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* <tr><td> </td><td colspan="5"><b>Message type</b></td></tr>
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* <tr><td><i>Field</i></td><td><b>Normal</b></td><td><b>Chat</b></td><td><b>Group Chat</b></td><td><b>Headline</b></td><td><b>XMPPError</b></td></tr>
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* <tr><td><i>subject</i></td> <td>SHOULD</td><td>SHOULD NOT</td><td>SHOULD NOT</td><td>SHOULD NOT</td><td>SHOULD NOT</td></tr>
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* <tr><td><i>thread</i></td> <td>OPTIONAL</td><td>SHOULD</td><td>OPTIONAL</td><td>OPTIONAL</td><td>SHOULD NOT</td></tr>
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* <tr><td><i>body</i></td> <td>SHOULD</td><td>SHOULD</td><td>SHOULD</td><td>SHOULD</td><td>SHOULD NOT</td></tr>
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* <tr><td><i>error</i></td> <td>MUST NOT</td><td>MUST NOT</td><td>MUST NOT</td><td>MUST NOT</td><td>MUST</td></tr>
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* </table>
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*
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* @author Matt Tucker
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*/
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public final class Message extends Stanza implements TypedCloneable<Message> {
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public static final String ELEMENT = "message";
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public static final String BODY = "body";
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private Type type;
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private String thread = null;
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private final Set<Subject> subjects = new HashSet<Subject>();
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private final Set<Body> bodies = new HashSet<Body>();
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/**
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* Creates a new, "normal" message.
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*/
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public Message() {
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}
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/**
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* Creates a new "normal" message to the specified recipient.
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*
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* @param to the recipient of the message.
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*/
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public Message(Jid to) {
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setTo(to);
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}
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/**
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* Creates a new message of the specified type to a recipient.
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*
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* @param to the user to send the message to.
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* @param type the message type.
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*/
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public Message(Jid to, Type type) {
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this(to);
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setType(type);
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}
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/**
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* Creates a new message to the specified recipient and with the specified body.
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*
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* @param to the user to send the message to.
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* @param body the body of the message.
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*/
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public Message(Jid to, String body) {
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this(to);
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setBody(body);
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}
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/**
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* Creates a new message to the specified recipient and with the specified body.
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*
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* @param to the user to send the message to.
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* @param body the body of the message.
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* @throws XmppStringprepException if 'to' is not a valid XMPP address.
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*/
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public Message(String to, String body) throws XmppStringprepException {
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this(JidCreate.from(to), body);
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}
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/**
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* Creates a new message with the specified recipient and extension element.
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*
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* @param to
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* @param extensionElement
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* @since 4.2
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*/
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public Message(Jid to, ExtensionElement extensionElement) {
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this(to);
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addExtension(extensionElement);
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}
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/**
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* Copy constructor.
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* <p>
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* This does not perform a deep clone, as extension elements are shared between the new and old
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* instance.
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* </p>
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*
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* @param other
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*/
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public Message(Message other) {
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super(other);
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this.type = other.type;
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this.thread = other.thread;
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this.subjects.addAll(other.subjects);
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this.bodies.addAll(other.bodies);
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}
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/**
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* Returns the type of the message. If no type has been set this method will return {@link
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* org.jivesoftware.smack.packet.Message.Type#normal}.
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*
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* @return the type of the message.
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*/
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public Type getType() {
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if (type == null) {
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return Type.normal;
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}
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return type;
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}
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/**
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* Sets the type of the message.
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*
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* @param type the type of the message.
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*/
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public void setType(Type type) {
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this.type = type;
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}
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/**
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* Returns the default subject of the message, or null if the subject has not been set.
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* The subject is a short description of message contents.
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* <p>
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* The default subject of a message is the subject that corresponds to the message's language.
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* (see {@link #getLanguage()}) or if no language is set to the applications default
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* language (see {@link Stanza#getDefaultLanguage()}).
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*
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* @return the subject of the message.
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*/
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public String getSubject() {
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return getSubject(null);
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}
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/**
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* Returns the subject corresponding to the language. If the language is null, the method result
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* will be the same as {@link #getSubject()}. Null will be returned if the language does not have
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* a corresponding subject.
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*
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* @param language the language of the subject to return.
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* @return the subject related to the passed in language.
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*/
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public String getSubject(String language) {
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Subject subject = getMessageSubject(language);
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return subject == null ? null : subject.subject;
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}
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private Subject getMessageSubject(String language) {
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language = determineLanguage(language);
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for (Subject subject : subjects) {
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if (language.equals(subject.language)) {
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return subject;
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}
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}
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return null;
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}
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/**
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* Returns a set of all subjects in this Message, including the default message subject accessible
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* from {@link #getSubject()}.
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*
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* @return a collection of all subjects in this message.
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*/
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public Set<Subject> getSubjects() {
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return Collections.unmodifiableSet(subjects);
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}
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/**
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* Sets the subject of the message. The subject is a short description of
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* message contents.
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*
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* @param subject the subject of the message.
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*/
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public void setSubject(String subject) {
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if (subject == null) {
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removeSubject(""); // use empty string because #removeSubject(null) is ambiguous
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return;
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}
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addSubject(null, subject);
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}
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/**
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* Adds a subject with a corresponding language.
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*
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* @param language the language of the subject being added.
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* @param subject the subject being added to the message.
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* @return the new {@link org.jivesoftware.smack.packet.Message.Subject}
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* @throws NullPointerException if the subject is null, a null pointer exception is thrown
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*/
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public Subject addSubject(String language, String subject) {
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language = determineLanguage(language);
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Subject messageSubject = new Subject(language, subject);
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subjects.add(messageSubject);
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return messageSubject;
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}
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/**
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* Removes the subject with the given language from the message.
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*
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* @param language the language of the subject which is to be removed
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* @return true if a subject was removed and false if it was not.
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*/
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public boolean removeSubject(String language) {
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language = determineLanguage(language);
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for (Subject subject : subjects) {
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if (language.equals(subject.language)) {
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return subjects.remove(subject);
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}
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}
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return false;
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}
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/**
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* Removes the subject from the message and returns true if the subject was removed.
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*
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* @param subject the subject being removed from the message.
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* @return true if the subject was successfully removed and false if it was not.
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*/
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public boolean removeSubject(Subject subject) {
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return subjects.remove(subject);
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}
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/**
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* Returns all the languages being used for the subjects, not including the default subject.
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*
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* @return the languages being used for the subjects.
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*/
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public List<String> getSubjectLanguages() {
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Subject defaultSubject = getMessageSubject(null);
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List<String> languages = new ArrayList<String>();
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for (Subject subject : subjects) {
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if (!subject.equals(defaultSubject)) {
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languages.add(subject.language);
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}
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}
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return Collections.unmodifiableList(languages);
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}
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/**
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* Returns the default body of the message, or null if the body has not been set. The body
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* is the main message contents.
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* <p>
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* The default body of a message is the body that corresponds to the message's language.
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* (see {@link #getLanguage()}) or if no language is set to the applications default
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* language (see {@link Stanza#getDefaultLanguage()}).
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*
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* @return the body of the message.
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*/
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public String getBody() {
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return getBody(null);
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}
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/**
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* Returns the body corresponding to the language. If the language is null, the method result
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* will be the same as {@link #getBody()}. Null will be returned if the language does not have
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* a corresponding body.
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*
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* @param language the language of the body to return.
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* @return the body related to the passed in language.
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* @since 3.0.2
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*/
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public String getBody(String language) {
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Body body = getMessageBody(language);
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return body == null ? null : body.message;
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}
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private Body getMessageBody(String language) {
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language = determineLanguage(language);
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for (Body body : bodies) {
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if (language.equals(body.language)) {
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return body;
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}
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}
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return null;
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}
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/**
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* Returns a set of all bodies in this Message, including the default message body accessible
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* from {@link #getBody()}.
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*
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* @return a collection of all bodies in this Message.
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* @since 3.0.2
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*/
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public Set<Body> getBodies() {
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return Collections.unmodifiableSet(bodies);
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}
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/**
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* Sets the body of the message.
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*
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* @param body the body of the message.
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* @see #setBody(String)
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* @since 4.2
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*/
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public void setBody(CharSequence body) {
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String bodyString;
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if (body != null) {
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bodyString = body.toString();
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} else {
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bodyString = null;
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}
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setBody(bodyString);
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}
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/**
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* Sets the body of the message. The body is the main message contents.
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*
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* @param body the body of the message.
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*/
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public void setBody(String body) {
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if (body == null) {
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removeBody(""); // use empty string because #removeBody(null) is ambiguous
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return;
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}
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addBody(null, body);
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}
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/**
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* Adds a body with a corresponding language.
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*
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* @param language the language of the body being added.
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* @param body the body being added to the message.
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* @return the new {@link org.jivesoftware.smack.packet.Message.Body}
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* @throws NullPointerException if the body is null, a null pointer exception is thrown
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* @since 3.0.2
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*/
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public Body addBody(String language, String body) {
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language = determineLanguage(language);
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Body messageBody = new Body(language, body);
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bodies.add(messageBody);
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return messageBody;
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}
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/**
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* Removes the body with the given language from the message.
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*
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* @param language the language of the body which is to be removed
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* @return true if a body was removed and false if it was not.
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*/
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public boolean removeBody(String language) {
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language = determineLanguage(language);
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for (Body body : bodies) {
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if (language.equals(body.language)) {
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return bodies.remove(body);
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}
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}
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return false;
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}
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/**
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* Removes the body from the message and returns true if the body was removed.
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*
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* @param body the body being removed from the message.
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* @return true if the body was successfully removed and false if it was not.
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* @since 3.0.2
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*/
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public boolean removeBody(Body body) {
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return bodies.remove(body);
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}
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/**
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* Returns all the languages being used for the bodies, not including the default body.
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*
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* @return the languages being used for the bodies.
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* @since 3.0.2
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*/
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public List<String> getBodyLanguages() {
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Body defaultBody = getMessageBody(null);
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List<String> languages = new ArrayList<String>();
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for (Body body : bodies) {
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if (!body.equals(defaultBody)) {
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languages.add(body.language);
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}
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}
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return Collections.unmodifiableList(languages);
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}
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/**
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* Returns the thread id of the message, which is a unique identifier for a sequence
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* of "chat" messages. If no thread id is set, <tt>null</tt> will be returned.
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*
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* @return the thread id of the message, or <tt>null</tt> if it doesn't exist.
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*/
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public String getThread() {
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return thread;
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}
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/**
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* Sets the thread id of the message, which is a unique identifier for a sequence
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* of "chat" messages.
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*
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* @param thread the thread id of the message.
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*/
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public void setThread(String thread) {
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this.thread = thread;
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}
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private String determineLanguage(String language) {
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// empty string is passed by #setSubject() and #setBody() and is the same as null
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language = "".equals(language) ? null : language;
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// if given language is null check if message language is set
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if (language == null && this.language != null) {
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return this.language;
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}
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else if (language == null) {
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return getDefaultLanguage();
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}
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else {
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return language;
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}
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}
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@Override
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public String toString() {
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StringBuilder sb = new StringBuilder();
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sb.append("Message Stanza [");
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logCommonAttributes(sb);
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if (type != null) {
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sb.append("type=").append(type).append(',');
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}
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sb.append(']');
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return sb.toString();
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}
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@Override
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public XmlStringBuilder toXML() {
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XmlStringBuilder buf = new XmlStringBuilder();
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buf.halfOpenElement(ELEMENT);
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addCommonAttributes(buf);
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buf.optAttribute("type", type);
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buf.rightAngleBracket();
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// Add the subject in the default language
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Subject defaultSubject = getMessageSubject(null);
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if (defaultSubject != null) {
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buf.element("subject", defaultSubject.subject);
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}
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// Add the subject in other languages
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for (Subject subject : getSubjects()) {
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// Skip the default language
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if (subject.equals(defaultSubject))
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continue;
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buf.halfOpenElement("subject").xmllangAttribute(subject.language).rightAngleBracket();
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buf.escape(subject.subject);
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buf.closeElement("subject");
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}
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// Add the body in the default language
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Body defaultBody = getMessageBody(null);
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if (defaultBody != null) {
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buf.element("body", defaultBody.message);
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}
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// Add the bodies in other languages
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for (Body body : getBodies()) {
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// Skip the default language
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if (body.equals(defaultBody))
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continue;
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buf.halfOpenElement(BODY).xmllangAttribute(body.getLanguage()).rightAngleBracket();
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buf.escape(body.getMessage());
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buf.closeElement(BODY);
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}
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buf.optElement("thread", thread);
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// Append the error subpacket if the message type is an error.
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if (type == Type.error) {
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appendErrorIfExists(buf);
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}
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// Add packet extensions, if any are defined.
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buf.append(getExtensionsXML());
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buf.closeElement(ELEMENT);
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return buf;
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}
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/**
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* Creates and returns a copy of this message stanza.
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* <p>
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* This does not perform a deep clone, as extension elements are shared between the new and old
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* instance.
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* </p>
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* @return a clone of this message.
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*/
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@Override
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public Message clone() {
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return new Message(this);
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}
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/**
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* Represents a message subject, its language and the content of the subject.
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*/
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public static final class Subject {
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private final String subject;
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private final String language;
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private Subject(String language, String subject) {
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if (language == null) {
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throw new NullPointerException("Language cannot be null.");
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}
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if (subject == null) {
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throw new NullPointerException("Subject cannot be null.");
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}
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this.language = language;
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this.subject = subject;
|
|
}
|
|
|
|
/**
|
|
* Returns the language of this message subject.
|
|
*
|
|
* @return the language of this message subject.
|
|
*/
|
|
public String getLanguage() {
|
|
return language;
|
|
}
|
|
|
|
/**
|
|
* Returns the subject content.
|
|
*
|
|
* @return the content of the subject.
|
|
*/
|
|
public String getSubject() {
|
|
return subject;
|
|
}
|
|
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
final int prime = 31;
|
|
int result = 1;
|
|
result = prime * result + this.language.hashCode();
|
|
result = prime * result + this.subject.hashCode();
|
|
return result;
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object obj) {
|
|
if (this == obj) {
|
|
return true;
|
|
}
|
|
if (obj == null) {
|
|
return false;
|
|
}
|
|
if (getClass() != obj.getClass()) {
|
|
return false;
|
|
}
|
|
Subject other = (Subject) obj;
|
|
// simplified comparison because language and subject are always set
|
|
return this.language.equals(other.language) && this.subject.equals(other.subject);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Represents a message body, its language and the content of the message.
|
|
*/
|
|
public static final class Body {
|
|
|
|
private final String message;
|
|
private final String language;
|
|
|
|
private Body(String language, String message) {
|
|
if (language == null) {
|
|
throw new NullPointerException("Language cannot be null.");
|
|
}
|
|
if (message == null) {
|
|
throw new NullPointerException("Message cannot be null.");
|
|
}
|
|
this.language = language;
|
|
this.message = message;
|
|
}
|
|
|
|
/**
|
|
* Returns the language of this message body.
|
|
*
|
|
* @return the language of this message body.
|
|
*/
|
|
public String getLanguage() {
|
|
return language;
|
|
}
|
|
|
|
/**
|
|
* Returns the message content.
|
|
*
|
|
* @return the content of the message.
|
|
*/
|
|
public String getMessage() {
|
|
return message;
|
|
}
|
|
|
|
@Override
|
|
public int hashCode() {
|
|
final int prime = 31;
|
|
int result = 1;
|
|
result = prime * result + this.language.hashCode();
|
|
result = prime * result + this.message.hashCode();
|
|
return result;
|
|
}
|
|
|
|
@Override
|
|
public boolean equals(Object obj) {
|
|
if (this == obj) {
|
|
return true;
|
|
}
|
|
if (obj == null) {
|
|
return false;
|
|
}
|
|
if (getClass() != obj.getClass()) {
|
|
return false;
|
|
}
|
|
Body other = (Body) obj;
|
|
// simplified comparison because language and message are always set
|
|
return this.language.equals(other.language) && this.message.equals(other.message);
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Represents the type of a message.
|
|
*/
|
|
public enum Type {
|
|
|
|
/**
|
|
* (Default) a normal text message used in email like interface.
|
|
*/
|
|
normal,
|
|
|
|
/**
|
|
* Typically short text message used in line-by-line chat interfaces.
|
|
*/
|
|
chat,
|
|
|
|
/**
|
|
* Chat message sent to a groupchat server for group chats.
|
|
*/
|
|
groupchat,
|
|
|
|
/**
|
|
* Text message to be displayed in scrolling marquee displays.
|
|
*/
|
|
headline,
|
|
|
|
/**
|
|
* indicates a messaging error.
|
|
*/
|
|
error;
|
|
|
|
/**
|
|
* Converts a String into the corresponding types. Valid String values that can be converted
|
|
* to types are: "normal", "chat", "groupchat", "headline" and "error".
|
|
*
|
|
* @param string the String value to covert.
|
|
* @return the corresponding Type.
|
|
* @throws IllegalArgumentException when not able to parse the string parameter
|
|
* @throws NullPointerException if the string is null
|
|
*/
|
|
public static Type fromString(String string) {
|
|
return Type.valueOf(string.toLowerCase(Locale.US));
|
|
}
|
|
|
|
}
|
|
}
|