From 13fefb1c178fa65d704d0dc79771b9b6ba68c943 Mon Sep 17 00:00:00 2001
From: jmillman <jmillman@basistech.com>
Date: Thu, 11 Jun 2015 14:48:50 -0400
Subject: [PATCH] keep a reference to public unmodifiable view of fileids so
 that listeners are not immediately garbage colelcted

---
 .../autopsy/imagegallery/grouping/DrawableGroup.java          | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ImageGallery/src/org/sleuthkit/autopsy/imagegallery/grouping/DrawableGroup.java b/ImageGallery/src/org/sleuthkit/autopsy/imagegallery/grouping/DrawableGroup.java
index 445b336ba9..779e13a815 100644
--- a/ImageGallery/src/org/sleuthkit/autopsy/imagegallery/grouping/DrawableGroup.java
+++ b/ImageGallery/src/org/sleuthkit/autopsy/imagegallery/grouping/DrawableGroup.java
@@ -41,13 +41,15 @@ public class DrawableGroup implements Comparable<DrawableGroup> {
     }
 
     private final ObservableList<Long> fileIDs = FXCollections.observableArrayList();
+    private final ObservableList<Long> unmodifiableFileIDS = FXCollections.unmodifiableObservableList(fileIDs);
 
     //cache the number of files in this groups with hashset hits
     private long hashSetHitsCount = -1;
     private final ReadOnlyBooleanWrapper seen = new ReadOnlyBooleanWrapper(false);
 
+    @SuppressWarnings("ReturnOfCollectionOrArrayField")
     synchronized public ObservableList<Long> fileIds() {
-        return FXCollections.unmodifiableObservableList(fileIDs);
+        return unmodifiableFileIDS;
     }
 
     final public GroupKey<?> groupKey;