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Code Issues Releases Wiki Activity

Only announce support for ChatMarkers if there is a listener

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This commit is contained in:
Florian Schmaus 2018-09-06 19:13:50 +02:00
parent 0fa6fb946c
commit 105192d7e7
1 changed files with 21 additions and 7 deletions
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28
smack-experimental/src/main/java/org/jivesoftware/smackx/chat_markers/ChatMarkersManager.java
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@ -16,10 +16,10 @@
*/
package org.jivesoftware.smackx.chat_markers;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.WeakHashMap;
import java.util.concurrent.CopyOnWriteArraySet;
import org.jivesoftware.smack.AsyncButOrdered;
import org.jivesoftware.smack.ConnectionCreationListener;
@ -87,12 +87,16 @@ public final class ChatMarkersManager extends Manager {
);
// @FORMATTER:ON
private final Set<ChatMarkersListener> incomingListeners = new CopyOnWriteArraySet<>();
private final Set<ChatMarkersListener> incomingListeners = new HashSet<>();
private final AsyncButOrdered<Chat> asyncButOrdered = new AsyncButOrdered<>();
private final ChatManager chatManager;
private final ServiceDiscoveryManager serviceDiscoveryManager;
private boolean enabled;
/**
* Get the singleton instance of ChatMarkersManager.
*
@ -166,7 +170,7 @@ public final class ChatMarkersManager extends Manager {
}
}, INCOMING_MESSAGE_FILTER);
ServiceDiscoveryManager.getInstanceFor(connection).addFeature(ChatMarkersElements.NAMESPACE);
serviceDiscoveryManager = ServiceDiscoveryManager.getInstanceFor(connection);
}
/**
@ -191,8 +195,13 @@ public final class ChatMarkersManager extends Manager {
* @param listener ChatMarkersListener
* @return true, if the listener was not registered before
*/
public boolean addIncomingChatMarkerMessageListener(ChatMarkersListener listener) {
return incomingListeners.add(listener);
public synchronized boolean addIncomingChatMarkerMessageListener(ChatMarkersListener listener) {
boolean res = incomingListeners.add(listener);
if (!enabled) {
serviceDiscoveryManager.addFeature(ChatMarkersElements.NAMESPACE);
enabled = true;
}
return res;
}
/**
@ -201,7 +210,12 @@ public final class ChatMarkersManager extends Manager {
* @param listener ChatMarkersListener
* @return true, if the listener was registered before
*/
public boolean removeIncomingChatMarkerMessageListener(ChatMarkersListener listener) {
return incomingListeners.remove(listener);
public synchronized boolean removeIncomingChatMarkerMessageListener(ChatMarkersListener listener) {
boolean res = incomingListeners.remove(listener);
if (incomingListeners.isEmpty() && enabled) {
serviceDiscoveryManager.removeFeature(ChatMarkersElements.NAMESPACE);
enabled = false;
}
return res;
}
}