From 1489ade104320b959684c9112b47277e0cbe82bb Mon Sep 17 00:00:00 2001
From: Jakob Heher <jakob.heher@iaik.tugraz.at>
Date: Tue, 9 Aug 2022 13:44:22 +0200
Subject: safeguard

---
 .../gui/composites/configuration/SimpleConfigurationComposite.java      | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'pdf-over-gui')

diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/configuration/SimpleConfigurationComposite.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/configuration/SimpleConfigurationComposite.java
index 167d50ea..ea26cd9a 100644
--- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/configuration/SimpleConfigurationComposite.java
+++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/configuration/SimpleConfigurationComposite.java
@@ -438,6 +438,8 @@ public class SimpleConfigurationComposite extends ConfigurationCompositeBase {
 					return;
 
 				this.getDisplay().syncExec(() -> {
+					if (this.isDisposed())
+						return;
 					if (this.sigPreviewParam != param)
 						return;
 					if (this.sigPreview != null)
-- 
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