DOCX export: avoid empty attributes in paragraph shading

Change-Id: I4bdf3f2d7f2aee3ce735a52185e736a8861d85e4

sw/qa/extras/ooxmlexport/ooxmlexport.cxx

@@ -3474,6 +3474,20 @@ DECLARE_OOXMLEXPORT_TEST(testFdo80902, "fdo80902.docx")
     assertXPath(pXmlDoc, "/w:document/w:body/w:sectPr/w:docGrid", "type", "lines");
 }
 
+DECLARE_OOXMLEXPORT_TEST(testParaShading, "para-shading.docx")
+{
+    // Make sure the themeColor attribute is not written when it would be empty.
+    if (xmlDocPtr pXmlDoc = parseExport("word/document.xml"))
+    {
+        xmlXPathObjectPtr pXPath = getXPathNode(pXmlDoc, "/w:document/w:body/w:p/w:pPr/w:shd");
+        xmlNodeSetPtr pXmlNodes = pXPath->nodesetval;
+        CPPUNIT_ASSERT_EQUAL(1, xmlXPathNodeSetGetLength(pXmlNodes));
+        xmlNodePtr pXmlNode = pXmlNodes->nodeTab[0];
+        // The attribute existed, so xmlGetProp() returned non-NULL.
+        CPPUNIT_ASSERT_EQUAL(static_cast<xmlChar*>(0), xmlGetProp(pXmlNode, BAD_CAST("themeColor")));
+    }
+}
+
 DECLARE_OOXMLEXPORT_TEST(testFirstHeaderFooter, "first-header-footer.docx")
 {
     // Test import and export of a section's headerf/footerf properties.

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -7710,42 +7710,35 @@ void DocxAttributeOutput::ParaGrabBag(const SfxGrabBagItem& rItem)
         {
             uno::Sequence<beans::PropertyValue> aGrabBagSeq;
             i->second >>= aGrabBagSeq;
-            OUString sVal, sShdFill, sShdColor,
-                    sThemeColor, sThemeTint, sThemeShade,
-                    sThemeFill, sThemeFillTint, sThemeFillShade;
+
             for (sal_Int32 j=0; j < aGrabBagSeq.getLength(); ++j)
             {
+                OString sVal = OUStringToOString(aGrabBagSeq[j].Value.get<OUString>(), RTL_TEXTENCODING_UTF8);
+
+                if (sVal.isEmpty())
+                    continue;
+
                 if (aGrabBagSeq[j].Name == "val")
-                    aGrabBagSeq[j].Value >>= sVal;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_val), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "color")
-                    aGrabBagSeq[j].Value >>= sShdColor;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_color), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "themeColor")
-                    aGrabBagSeq[j].Value >>= sThemeColor;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_themeColor), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "themeTint")
-                    aGrabBagSeq[j].Value >>= sThemeTint;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_themeTint), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "themeShade")
-                    aGrabBagSeq[j].Value >>= sThemeShade;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_themeShade), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "fill")
-                    aGrabBagSeq[j].Value >>= sShdFill;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_fill), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "themeFill")
-                    aGrabBagSeq[j].Value >>= sThemeFill;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_themeFill), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "themeFillTint")
-                    aGrabBagSeq[j].Value >>= sThemeFillTint;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_themeFillTint), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "themeFillShade")
-                    aGrabBagSeq[j].Value >>= sThemeFillShade;
+                    AddToAttrList(m_pBackgroundAttrList, FSNS(XML_w, XML_themeFillShade), sVal.getStr());
                 else if (aGrabBagSeq[j].Name == "originalColor")
                     aGrabBagSeq[j].Value >>= m_sOriginalBackgroundColor;
             }
-            AddToAttrList(m_pBackgroundAttrList, 9,
-                    FSNS(XML_w, XML_val), OUStringToOString(sVal, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_color), OUStringToOString(sShdColor, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_themeColor), OUStringToOString(sThemeColor, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_themeTint), OUStringToOString(sThemeTint, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_themeShade), OUStringToOString(sThemeShade, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_fill), OUStringToOString(sShdFill, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_themeFill), OUStringToOString(sThemeFill, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_themeFillTint), OUStringToOString(sThemeFillTint, RTL_TEXTENCODING_UTF8).getStr(),
-                    FSNS(XML_w, XML_themeFillShade), OUStringToOString(sThemeFillShade, RTL_TEXTENCODING_UTF8).getStr());
         }
         else if (i->first == "SdtPr")
         {