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New logic for delivering messages without a thread ID to a Chat object. This improves compatibility with clients that don't support thread ID. Also some misc formatting updates.

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git-svn-id: http://svn.igniterealtime.org/svn/repos/smack/trunk@2779 b35dd754-fafc-0310-a699-88a17e54d16e
This commit is contained in:
Matt Tucker 2005-09-05 20:00:45 +00:00 • committed by matt
parent afd7e6f2d6
commit 06b7a0eacc
6 changed files with 148 additions and 93 deletions
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110
source/org/jivesoftware/smack/Chat.java
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@ -24,15 +24,16 @@ import org.jivesoftware.smack.packet.Message;
import org.jivesoftware.smack.util.StringUtils;
import org.jivesoftware.smack.filter.*;
import java.util.*;
import java.lang.ref.WeakReference;
/**
* A chat is a series of messages sent between two users. Each chat can have
* a unique thread ID, which is used to track which messages are part of a particular
* conversation.<p>
*
* In some situations, it is better to have all messages from the other user delivered
* to a Chat rather than just the messages that have a particular thread ID. To
* enable this behavior, call {@link #setFilteredOnThreadID(boolean)} with
* <tt>false</tt> as the parameter.
* A chat is a series of messages sent between two users. Each chat has a unique
* thread ID, which is used to track which messages are part of a particular
* conversation. Some messages are sent without a thread ID, and some clients
* don't send thread IDs at all. Therefore, if a message without a thread ID
* arrives it is routed to the most recently created Chat with the message
* sender.
*
* @see XMPPConnection#createChat(String)
* @author Matt Tucker
@ -43,13 +44,7 @@ public class Chat {
* A prefix helps to make sure that ID's are unique across mutliple instances.
*/
private static String prefix = StringUtils.randomString(5);
/**
* True if only messages that have a matching threadID will be delivered to a Chat. When
* false, any message from the other participant will be delivered to a Chat.
*/
private static boolean filteredOnThreadID = true;
/**
* Keeps track of the current increment, which is appended to the prefix to
* forum a unique ID.
@ -71,6 +66,7 @@ public class Chat {
private String participant;
private PacketFilter messageFilter;
private PacketCollector messageCollector;
private Set listeners = new HashSet();
/**
* Creates a new chat with the specified user.
@ -81,10 +77,6 @@ public class Chat {
public Chat(XMPPConnection connection, String participant) {
// Automatically assign the next chat ID.
this(connection, participant, nextID());
// If not filtering on thread ID, force the thread ID for this Chat to be null.
if (!filteredOnThreadID) {
this.threadID = null;
}
}
/**
@ -99,42 +91,17 @@ public class Chat {
this.participant = participant;
this.threadID = threadID;
if (filteredOnThreadID) {
// Filter the messages whose thread equals Chat's id
messageFilter = new ThreadFilter(threadID);
}
else {
// Filter the messages of type "chat" and sender equals Chat's participant
messageFilter =
new OrFilter(
new AndFilter(
new MessageTypeFilter(Message.Type.CHAT),
new FromContainsFilter(participant)),
new ThreadFilter(threadID));
}
// Register with the map of chats so that messages with no thread ID
// set will be delivered to this Chat.
connection.chats.put(StringUtils.parseBareAddress(participant),
new WeakReference(this));
// Filter the messages whose thread equals Chat's id
messageFilter = new ThreadFilter(threadID);
messageCollector = connection.createPacketCollector(messageFilter);
}
/**
* Returns true if only messages that have a matching threadID will be delivered to Chat
* instances. When false, any message from the other participant will be delivered to Chat instances.
*
* @return true if messages delivered to Chat instances are filtered on thread ID.
*/
public static boolean isFilteredOnThreadID() {
return filteredOnThreadID;
}
/**
* Sets whether only messages that have a matching threadID will be delivered to Chat instances.
* When false, any message from the other participant will be delivered to a Chat instances.
*
* @param value true if messages delivered to Chat instances are filtered on thread ID.
*/
public static void setFilteredOnThreadID(boolean value) {
filteredOnThreadID = value;
}
/**
* Returns the thread id associated with this chat, which corresponds to the
* <tt>thread</tt> field of XMPP messages. This method may return <tt>null</tt>
@ -252,6 +219,41 @@ public class Chat {
*/
public void addMessageListener(PacketListener listener) {
connection.addPacketListener(listener, messageFilter);
// Keep track of the listener so that we can manually deliver extra
// messages to it later if needed.
synchronized (listeners) {
listeners.add(new WeakReference(listener));
}
}
/**
* Delivers a message directly to this chat, which will add the message
* to the collector and deliver it to all listeners registered with the
* Chat. This is used by the XMPPConnection class to deliver messages
* without a thread ID.
*
* @param message the message.
*/
void deliver(Message message) {
// Because the collector and listeners are expecting a thread ID with
// a specific value, set the thread ID on the message even though it
// probably never had one.
message.setThread(threadID);
messageCollector.processPacket(message);
synchronized (listeners) {
for (Iterator i=listeners.iterator(); i.hasNext(); ) {
WeakReference listenerRef = (WeakReference)i.next();
PacketListener listener;
if ((listener = (PacketListener)listenerRef.get()) != null) {
listener.processPacket(message);
}
// If the reference was cleared, remove it from the set.
else {
i.remove();
}
}
}
}
public void finalize() throws Throwable {
@ -261,6 +263,8 @@ public class Chat {
messageCollector.cancel();
}
}
catch (Exception e) {}
catch (Exception e) {
// Ignore.
}
}
}