From 19986b130987f4ca2977444ed9106ef1f612acb5 Mon Sep 17 00:00:00 2001
From: gmungoc <g.m.carstairs@dundee.ac.uk>
Date: Thu, 10 May 2018 15:17:20 +0100
Subject: [PATCH] JAL-591 reduced updating by checking/setting 'updating' flag

---
 src/jalview/gui/OptsAndParamsPage.java |   30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

diff --git a/src/jalview/gui/OptsAndParamsPage.java b/src/jalview/gui/OptsAndParamsPage.java
index 5ef7169..dcd07ef 100644
--- a/src/jalview/gui/OptsAndParamsPage.java
+++ b/src/jalview/gui/OptsAndParamsPage.java
@@ -552,13 +552,23 @@ public class OptsAndParamsPage
      */
     private void checkIfModified()
     {
-      Object newValue = updateSliderFromValueField();
-      boolean modified = true;
-      if (newValue.getClass() == lastVal.getClass())
+      if (!adjusting)
       {
-        modified = !newValue.equals(lastVal);
+        try
+        {
+          adjusting = true;
+          Object newValue = updateSliderFromValueField();
+          boolean modified = true;
+          if (newValue.getClass() == lastVal.getClass())
+          {
+            modified = !newValue.equals(lastVal);
+          }
+          pmdialogbox.argSetModified(this, modified);
+        } finally
+        {
+          adjusting = false;
+        }
       }
-      pmdialogbox.argSetModified(this, modified);
     }
 
     @Override
@@ -632,8 +642,13 @@ public class OptsAndParamsPage
     @Override
     public void stateChanged(ChangeEvent e)
     {
-      if (!adjusting)
+      if (adjusting)
       {
+        return;
+      }
+      try
+      {
+        adjusting = true;
         if (!isLogarithmicParameter)
         {
           /*
@@ -651,6 +666,9 @@ public class OptsAndParamsPage
           valueField.setText(formatDouble(value));
         }
         checkIfModified();
+      } finally
+      {
+        adjusting = false;
       }
     }
 
-- 
1.7.10.2