From 6b3694314486987dc94d72f96839e7abcfad2a56 Mon Sep 17 00:00:00 2001
From: Harald Wolff <harald@das-wolff-rudel.de>
Date: Wed, 7 Feb 2018 10:55:10 +0100
Subject: [PATCH] JExtendedInternalFrame: fix resize behaviour

---
 src/org/hwo/ui/JExtendedInternalFrame.java | 57 ++++++++++++----------
 1 file changed, 30 insertions(+), 27 deletions(-)

diff --git a/src/org/hwo/ui/JExtendedInternalFrame.java b/src/org/hwo/ui/JExtendedInternalFrame.java
index 67ebe87..c2b88c1 100644
--- a/src/org/hwo/ui/JExtendedInternalFrame.java
+++ b/src/org/hwo/ui/JExtendedInternalFrame.java
@@ -54,34 +54,37 @@ public class JExtendedInternalFrame extends JInternalFrame
 			public void componentResized(ComponentEvent e) {
 				Component dp = getParent();
 				
-				Dimension dpr = dp.getSize();
-				Rectangle b = getBounds();
-				boolean reset = false;
-				
-				if (b.x < 0) {
-					reset = true;
-					b.width += b.x;
-					b.x = 0;
+				if(dp != null) {
+					Dimension dpr = dp.getSize();
+					Rectangle b = getBounds();
+					boolean reset = false;
+					
+					if (b.x < 0) {
+						reset = true;
+						b.width += b.x;
+						b.x = 0;
+					}
+					if (b.y < 0) {
+						reset = true;
+						b.height += b.y;
+						b.y = 0;
+					}
+					
+					if (b.x + b.width > dpr.width) {
+						b.width = dpr.width - b.x;
+						reset = true;
+					}
+					
+					if (b.y + b.height > dpr.height){
+						b.height = dpr.height - b.y;
+						reset = true;
+					}
+					
+					if (reset) {
+						setBounds(b);
+					}		
 				}
-				if (b.y < 0) {
-					reset = true;
-					b.height += b.y;
-					b.y = 0;
-				}
-				
-				if (b.x + b.width > dpr.width) {
-					b.width = dpr.width - b.x;
-					reset = true;
-				}
-				
-				if (b.y + b.height > dpr.height){
-					b.height = dpr.height - b.y;
-					reset = true;
-				}
-				
-				if (reset) {
-					setBounds(b);
-				}				
+		
 			}
 		});