From fcfa34a62fcc24dfd830dcac9c3327241041bf52 Mon Sep 17 00:00:00 2001
From: Nils Schmidt <nils.schmidt@schmidthj.de>
Date: Wed, 30 Aug 2017 20:30:11 +0200
Subject: [PATCH] Fixed issue #603.

---
 src/org/nschmidt/ldparteditor/widgets/BigDecimalSpinner.java | 4 ++--
 src/org/nschmidt/ldparteditor/widgets/IntegerSpinner.java    | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/org/nschmidt/ldparteditor/widgets/BigDecimalSpinner.java b/src/org/nschmidt/ldparteditor/widgets/BigDecimalSpinner.java
index 125e04e8a..25e632b20 100644
--- a/src/org/nschmidt/ldparteditor/widgets/BigDecimalSpinner.java
+++ b/src/org/nschmidt/ldparteditor/widgets/BigDecimalSpinner.java
@@ -157,7 +157,7 @@ public void mouseScrolled(MouseEvent e) {
                 selectAll = false;
                 new Thread( () -> {
                     focus = true;
-                    while (focus) {
+                    while (focus && !txt_val[0].isDisposed()) {
                         try {
                             Thread.sleep(100);
                         } catch (InterruptedException ie) {}
@@ -234,7 +234,7 @@ public void modifyText(ModifyEvent e) {
                 new Thread(() -> {
                     final int id = counter.getAndIncrement() + 1;
                     focus = true;
-                    while (focus && counter.compareAndSet(id, id) && !forceUpdate) {
+                    while (focus && counter.compareAndSet(id, id) && !forceUpdate && !txt_val[0].isDisposed()) {
                         Display.getDefault().asyncExec(() -> {
                             try  {
                                 focus = txt_val[0].isFocusControl();
diff --git a/src/org/nschmidt/ldparteditor/widgets/IntegerSpinner.java b/src/org/nschmidt/ldparteditor/widgets/IntegerSpinner.java
index 3ea1d278c..547a2673f 100644
--- a/src/org/nschmidt/ldparteditor/widgets/IntegerSpinner.java
+++ b/src/org/nschmidt/ldparteditor/widgets/IntegerSpinner.java
@@ -139,7 +139,7 @@ public void mouseScrolled(MouseEvent e) {
                 selectAll = false;
                 new Thread( () -> {
                     focus = true;
-                    while (focus) {
+                    while (focus && !txt_val[0].isDisposed()) {
                         try {
                             Thread.sleep(100);
                         } catch (InterruptedException ie) {}
@@ -197,7 +197,7 @@ public void modifyText(ModifyEvent e) {
                 new Thread( () -> {
                     final int id = counter.getAndIncrement() + 1;
                     focus = true;
-                    while (focus && counter.compareAndSet(id, id) && !forceUpdate) {
+                    while (focus && counter.compareAndSet(id, id) && !forceUpdate && !txt_val[0].isDisposed()) {
                         Display.getDefault().asyncExec(() -> {
                             try {
                                 focus = txt_val[0].isFocusControl();