JAL-2587 Update overview progress bar while drawing rows too

[jalview.git] / src / jalview / gui / OverviewPanel.java

diff --git a/src/jalview/gui/OverviewPanel.java b/src/jalview/gui/OverviewPanel.java
index 74c2112..593f7ae 100755 (executable)
--- a/src/jalview/gui/OverviewPanel.java
+++ b/src/jalview/gui/OverviewPanel.java
@@ -308,11 +308,14 @@ public class OverviewPanel extends JPanel implements Runnable,
   @Override
   public void run()
   {
-    oviewCanvas.draw(av.isShowSequenceFeatures(),
-            (av.isShowAnnotation() && av
-                    .getAlignmentConservationAnnotation() != null), ap
-                    .getSeqPanel().seqCanvas.getFeatureRenderer());
-    setBoxPosition();
+    if (oviewCanvas != null)
+    {
+      oviewCanvas.draw(av.isShowSequenceFeatures(),
+              (av.isShowAnnotation()
+                      && av.getAlignmentConservationAnnotation() != null),
+              ap.getSeqPanel().seqCanvas.getFeatureRenderer());
+      setBoxPosition();
+    }
   }
 
   /**
@@ -322,9 +325,12 @@ public class OverviewPanel extends JPanel implements Runnable,
    */
   private void setBoxPosition()
   {
-    od.setBoxPosition(av.getAlignment().getHiddenSequences(), av
-            .getAlignment().getHiddenColumns());
-    repaint();
+    if (od != null)
+    {
+      od.setBoxPosition(av.getAlignment().getHiddenSequences(),
+              av.getAlignment().getHiddenColumns());
+      repaint();
+    }
   }
 
   @Override
@@ -341,6 +347,7 @@ public class OverviewPanel extends JPanel implements Runnable,
     try
     {
       av.getRanges().removePropertyChangeListener(this);
+      oviewCanvas.dispose();
     } finally
     {
       progressPanel = null;