Ignore duplicate listeners.

2013-02-24 02:02:06 +01:00 · 2013-02-24 02:02:06 +01:00 · d694fe7d55
commit d694fe7d55
parent 04107e0505
1 changed files with 1 additions and 0 deletions
--- a/src/main/java/de/ailis/usb4java/support/EventListenerList.java
+++ b/src/main/java/de/ailis/usb4java/support/EventListenerList.java
@ -31,6 +31,7 @@ public abstract class EventListenerList<T extends EventListener>
     */
    public final void add(final T listener)
    {
+        if (this.listeners.contains(listener)) return;
        this.listeners.add(listener);
    }