From c3adfbaf480348ae3f6462562e8e334c70724940 Mon Sep 17 00:00:00 2001
From: Yegor Kozlov <yegor@apache.org>
Date: Mon, 2 Jul 2012 08:07:16 +0000
Subject: [PATCH] avoid NPE when setting line properties if linewidth is zero

git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1356102 13f79535-47bb-0310-9956-ffa450edef68
---
 .../apache/poi/xslf/usermodel/XSLFSimpleShape.java |  6 +++---
 .../poi/xslf/usermodel/TestXSLFSimpleShape.java    | 14 ++++++++++++++
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSimpleShape.java b/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSimpleShape.java
index 6e4768399b..d6cfa7fba3 100644
--- a/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSimpleShape.java
+++ b/src/ooxml/java/org/apache/poi/xslf/usermodel/XSLFSimpleShape.java
@@ -299,7 +299,7 @@ public abstract class XSLFSimpleShape extends XSLFShape {
     public void setLineWidth(double width) {
         CTShapeProperties spPr = getSpPr();
         if (width == 0.) {
-            if (spPr.isSetLn())
+            if (spPr.isSetLn() && spPr.getLn().isSetW())
                 spPr.getLn().unsetW();
         } else {
             CTLineProperties ln = spPr.isSetLn() ? spPr.getLn() : spPr
@@ -353,7 +353,7 @@ public abstract class XSLFSimpleShape extends XSLFShape {
     public void setLineDash(LineDash dash) {
         CTShapeProperties spPr = getSpPr();
         if (dash == null) {
-            if (spPr.isSetLn())
+            if (spPr.isSetLn() &&  spPr.getLn().isSetPrstDash())
                 spPr.getLn().unsetPrstDash();
         } else {
             CTPresetLineDashProperties val = CTPresetLineDashProperties.Factory
@@ -406,7 +406,7 @@ public abstract class XSLFSimpleShape extends XSLFShape {
     public void setLineCap(LineCap cap) {
         CTShapeProperties spPr = getSpPr();
         if (cap == null) {
-            if (spPr.isSetLn())
+            if (spPr.isSetLn() && spPr.getLn().isSetCap())
                 spPr.getLn().unsetCap();
         } else {
             CTLineProperties ln = spPr.isSetLn() ? spPr.getLn() : spPr
diff --git a/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFSimpleShape.java b/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFSimpleShape.java
index dc00fff69f..f0d57241db 100644
--- a/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFSimpleShape.java
+++ b/src/ooxml/testcases/org/apache/poi/xslf/usermodel/TestXSLFSimpleShape.java
@@ -100,6 +100,20 @@ public class TestXSLFSimpleShape extends TestCase {
         assertEquals(null, shape.getLineColor());
         // setting dash width to null unsets the SolidFill element
         assertFalse(shape.getSpPr().getLn().isSetSolidFill());
+
+        XSLFSimpleShape ln2 = slide.createAutoShape();
+        ln2.setLineDash(LineDash.DOT);
+        assertEquals(LineDash.DOT, ln2.getLineDash());
+        ln2.setLineWidth(0.);
+        assertEquals(0., ln2.getLineWidth());
+
+        XSLFSimpleShape ln3 = slide.createAutoShape();
+        ln3.setLineWidth(1.);
+        assertEquals(1., ln3.getLineWidth());
+        ln3.setLineDash(null);
+        assertEquals(null, ln3.getLineDash());
+        ln3.setLineCap(null);
+        assertEquals(null, ln3.getLineDash());
     }
 
     public void testFill() {
-- 
2.39.5