From: Daniel Kirschten <daniel.kirschten@gmx.de>
Date: Sun, 30 Jun 2019 13:17:25 +0000 (+0200)
Subject: More helpful error message if no component is selected in LogicUICanvas
X-Git-Url: https://mograsim.net/gitweb/?a=commitdiff_plain;ds=sidebyside;h=8638004215f29625847ea345f1cfadb446417c1f;p=Mograsim.git

More helpful error message if no component is selected in LogicUICanvas
---

diff --git a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/LogicUICanvas.java b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/LogicUICanvas.java
index 8e01a162..73c1f06b 100644
--- a/net.mograsim.logic.ui/src/net/mograsim/logic/ui/LogicUICanvas.java
+++ b/net.mograsim.logic.ui/src/net/mograsim/logic/ui/LogicUICanvas.java
@@ -113,9 +113,10 @@ public class LogicUICanvas extends ZoomableCanvas
 		{
 			try
 			{
-				if (componentSelector.getSelectionIndex() >= componentsByItemIndex.size())
-					throw new RuntimeException("No valid component selected");
-				GUIComponent target = componentsByItemIndex.get(componentSelector.getSelectionIndex());
+				int componentIndex = componentSelector.getSelectionIndex();
+				if (componentIndex < 0 || componentIndex >= componentsByItemIndex.size())
+					throw new RuntimeException("No component selected");
+				GUIComponent target = componentsByItemIndex.get(componentIndex);
 				String valueString = valueText.getText();
 				Object value;
 				if (radioBit.getSelection())