From c072c4e780b4582b18b3b36ee75c5fd58db00dad Mon Sep 17 00:00:00 2001
From: Tobias Kellner <tobias.kellner@iaik.tugraz.at>
Date: Wed, 3 Dec 2014 18:14:48 +0100
Subject: Show appropriate error when submitting empty TAN

---
 .../at/asit/pdfover/gui/composites/MobileBKUEnterTANComposite.java  | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'pdf-over-gui/src/main/java/at')

diff --git a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/MobileBKUEnterTANComposite.java b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/MobileBKUEnterTANComposite.java
index 66063a62..7bda7fc4 100644
--- a/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/MobileBKUEnterTANComposite.java
+++ b/pdf-over-gui/src/main/java/at/asit/pdfover/gui/composites/MobileBKUEnterTANComposite.java
@@ -72,6 +72,12 @@ public class MobileBKUEnterTANComposite extends StateComposite {
 
 			tan = tan.trim();
 
+			if (tan.isEmpty()) {
+				MobileBKUEnterTANComposite.this.setMessage(Messages
+						.getString("error.NoTan")); //$NON-NLS-1$
+				return;
+			}
+
 			if (MobileBKUEnterTANComposite.this.refVal.startsWith(tan)) {
 				MobileBKUEnterTANComposite.this.setMessage(Messages
 						.getString("error.EnteredReferenceValue")); //$NON-NLS-1$
-- 
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