update HtmlSvgOutput to ignore browser invocation when running in headless mode

diff --git a/src/jalview/io/HtmlSvgOutput.java b/src/jalview/io/HtmlSvgOutput.java
index 4793ac4..68f9924 100644 (file)
--- a/src/jalview/io/HtmlSvgOutput.java
+++ b/src/jalview/io/HtmlSvgOutput.java
@@ -105,8 +105,11 @@ public class HtmlSvgOutput
       out.write(htmlData.getBytes());
       out.flush();
       out.close();
-
+      if (!(System.getProperty("java.awt.headless") != null && System
+              .getProperty("java.awt.headless").equals("true")))
+      {
       jalview.util.BrowserLauncher.openURL("file:///" + file);
+      }
     } catch (Exception e)
     {
       e.printStackTrace();