X-Git-Url: https://gerrit.simantics.org/r/gitweb?a=blobdiff_plain;f=org.simantics.interop%2Fsrc%2Forg%2Fsimantics%2Finterop%2Fissues%2FAbstractIssue.java;h=01ebb022bcb8052db9216cb1fe06e04330438a2d;hb=1f360dfa6505e971658bad416214f5f358305fba;hp=ae14eedcf58d1f2434c4b4dd39e9458184ae8c9b;hpb=f8c634455297c89de2932ee815dfb5cbba427646;p=simantics%2Finterop.git

diff --git a/org.simantics.interop/src/org/simantics/interop/issues/AbstractIssue.java b/org.simantics.interop/src/org/simantics/interop/issues/AbstractIssue.java
index ae14eed..01ebb02 100644
--- a/org.simantics.interop/src/org/simantics/interop/issues/AbstractIssue.java
+++ b/org.simantics.interop/src/org/simantics/interop/issues/AbstractIssue.java
@@ -24,9 +24,12 @@ public abstract class AbstractIssue implements Issue{
 		Display.getDefault().asyncExec(new Runnable() {
 			@Override
 			public void run() {
-				for (IssueListener l : listeners) {
-					l.updated(AbstractIssue.this);
+				synchronized (listeners) {
+					for (IssueListener l : listeners) {
+						l.updated(AbstractIssue.this);
+					}	
 				}
+				
 			}
 		});
 	}
@@ -40,18 +43,23 @@ public abstract class AbstractIssue implements Issue{
 				for (IssueListener l : list) {
 					l.disposed(AbstractIssue.this);
 				}
+				listeners.clear();
 			}
 		});
 	}
 	
 	@Override
 	public void addListener(IssueListener listener) {
-		listeners.add(listener);
+		synchronized(listeners) {
+			listeners.add(listener);
+		}
 	}
 	
 	@Override
 	public void removeListener(IssueListener listener) {
-		listeners.remove(listener);
+		synchronized(listeners) {
+			listeners.remove(listener);
+		}
 	}
 	
 	@Override