From 5526e662a8c421cb49b298a2932a55819820dcae Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Mon, 8 Jan 2018 11:39:07 +0000
Subject: [PATCH] JAL-2864 OverviewCanvas.dispose() for applet

---
 src/jalview/appletgui/OverviewCanvas.java |    8 ++++++++
 src/jalview/appletgui/OverviewPanel.java  |    4 ++++
 2 files changed, 12 insertions(+)

diff --git a/src/jalview/appletgui/OverviewCanvas.java b/src/jalview/appletgui/OverviewCanvas.java
index 9597b44..03c93fa 100644
--- a/src/jalview/appletgui/OverviewCanvas.java
+++ b/src/jalview/appletgui/OverviewCanvas.java
@@ -164,4 +164,12 @@ public class OverviewCanvas extends Component
     }
   }
 
+  /**
+   * Nulls references to protect against potential memory leaks
+   */
+  void dispose()
+  {
+    od = null;
+  }
+
 }
diff --git a/src/jalview/appletgui/OverviewPanel.java b/src/jalview/appletgui/OverviewPanel.java
index 8ce597d..4f47913 100755
--- a/src/jalview/appletgui/OverviewPanel.java
+++ b/src/jalview/appletgui/OverviewPanel.java
@@ -329,6 +329,10 @@ public class OverviewPanel extends Panel implements Runnable,
     } finally
     {
       av = null;
+      if (oviewCanvas != null)
+      {
+        oviewCanvas.dispose();
+      }
       oviewCanvas = null;
       ap = null;
       od = null;
-- 
1.7.10.2