JAL-3166 catch NPE if all sequences are hidden

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

diff --git a/src/jalview/gui/IdPanel.java b/src/jalview/gui/IdPanel.java
index 35fd1b4..fb37445 100755 (executable)
--- a/src/jalview/gui/IdPanel.java
+++ b/src/jalview/gui/IdPanel.java
@@ -108,8 +108,7 @@ public class IdPanel extends JPanel
       SequenceI sequence = av.getAlignment().getSequenceAt(seq);
       StringBuilder tip = new StringBuilder(64);
       seqAnnotReport.createTooltipAnnotationReport(tip, sequence,
-              av.isShowDBRefs(), av.isShowNPFeats(),
-              sp.seqCanvas.fr.getMinMax());
+              av.isShowDBRefs(), av.isShowNPFeats(), sp.seqCanvas.fr);
       setToolTipText(JvSwingUtils.wrapTooltip(true,
               sequence.getDisplayId(true) + " " + tip.toString()));
     }
@@ -148,24 +147,25 @@ public class IdPanel extends JPanel
   public void mouseWheelMoved(MouseWheelEvent e)
   {
     e.consume();
-    if (e.getWheelRotation() > 0)
+    double wheelRotation = e.getPreciseWheelRotation();
+    if (wheelRotation > 0)
     {
       if (e.isShiftDown())
       {
         av.getRanges().scrollRight(true);
       }
-      else if (!av.getWrapAlignment())
+      else
       {
         av.getRanges().scrollUp(false);
       }
     }
-    else
+    else if (wheelRotation < 0)
     {
       if (e.isShiftDown())
       {
         av.getRanges().scrollRight(false);
       }
-      else if (!av.getWrapAlignment())
+      else
       {
         av.getRanges().scrollUp(true);
       }
@@ -330,8 +330,11 @@ public class IdPanel extends JPanel
      *  build a new links menu based on the current links
      *  and any non-positional features
      */
+    List<SequenceFeature> features = null;
+    if (sq != null)
+    {
     List<String> nlinks = Preferences.sequenceUrlLinks.getLinksForMenu();
-    List<SequenceFeature> features = sq.getFeatures().getNonPositionalFeatures();
+      features = sq.getFeatures().getNonPositionalFeatures();
     for (SequenceFeature sf : features)
     {
       if (sf.links != null)
@@ -342,6 +345,7 @@ public class IdPanel extends JPanel
         }
       }
     }
+    }
 
     PopupMenu pop = new PopupMenu(alignPanel, sq, features,
             Preferences.getGroupURLLinks());