From ebb8a6d02521ff7a6cd096209ac5737e5d81bf52 Mon Sep 17 00:00:00 2001
From: Karl Tauber <karl@jformdesigner.com>
Date: Mon, 23 Aug 2021 15:00:28 +0200
Subject: [PATCH] Theme Editor: ignore custom UI delegates in preview

---
 .../com/formdev/flatlaf/themeeditor/FlatThemePreview.java    | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePreview.java b/flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePreview.java
index 719cfc0b..8cf9fac0 100644
--- a/flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePreview.java
+++ b/flatlaf-theme-editor/src/main/java/com/formdev/flatlaf/themeeditor/FlatThemePreview.java
@@ -108,6 +108,11 @@ class FlatThemePreview
 		if( !(key instanceof String) )
 			return null;
 
+		// ignore custom UI delegates for preview because those classes
+		// are not available in theme editor
+		if( ((String)key).endsWith( "UI" ) )
+			return null;
+
 		Object value = textArea.propertiesSupport.getParsedProperty( (String) key );
 		if( value instanceof LazyValue )
 			value = ((LazyValue)value).createValue( null );