From: BobHanson <hansonr@stolaf.edu>
Date: Tue, 9 Jun 2020 06:20:53 +0000 (-0500)
Subject: JAL-3446 from JAL-3253-applet Tree Canvas bug fix
X-Git-Url: http://source.jalview.org/gitweb/?a=commitdiff_plain;h=138474a8ee16555ca5f6317450e313258cb57b91;p=jalview.git

JAL-3446 from JAL-3253-applet Tree Canvas bug fix

- was possible to right-click off the node to get a NullPointer
exception.
---

diff --git a/src/jalview/gui/TreeCanvas.java b/src/jalview/gui/TreeCanvas.java
index 29ba52b..e59dfcc 100755
--- a/src/jalview/gui/TreeCanvas.java
+++ b/src/jalview/gui/TreeCanvas.java
@@ -761,7 +761,9 @@ public class TreeCanvas extends JPanel implements MouseListener, Runnable,
      */
     if (e.isPopupTrigger())
     {
-      chooseSubtreeColour();
+      if (highlightNode != null) {
+        chooseSubtreeColour();
+      }
       e.consume(); // prevent mouseClicked happening
     }
   }