fdo#78300 File Corrupt:drawing objects into a text box.

Description :
Docx file corrupt after roundtrip.
LO insert <w:drawing> inside the <wps:txbx> under choice after RT,
if the file created in MS word 2007 and contains Word Art inside the text box.

Conflicts:
	sw/qa/extras/ooxmlexport/ooxmlexport.cxx
	sw/source/filter/ww8/docxsdrexport.cxx
	sw/source/filter/ww8/docxsdrexport.hxx

Change-Id: I7421ed353cd7e9bae17b2447122090a4113f52b5

sw/qa/extras/ooxmlexport/ooxmlexport.cxx

@@ -3338,6 +3338,16 @@ DECLARE_OOXMLEXPORT_TEST(testfdo78599,"fdo78599.docx")
     assertXPath ( pXmlDoc, "/w:document/w:body/w:p[1]/w:hyperlink/w:r[6]/w:fldChar", "fldCharType", "end" );
 }
 
+DECLARE_OOXMLEXPORT_TEST(testfdo78300,"fdo78300.docx")
+{
+    xmlDocPtr pXmlDoc = parseExport("word/document.xml");
+    if (!pXmlDoc)
+        return;
+    assertXPath(pXmlDoc,
+                "/w:document/w:body/w:r[1]/mc:AlternateContent/mc:Choice/w:drawing[1]/wp:anchor/a:graphic/a:graphicData/wps:wsp/wps:txbx/w:txbxContent/w:p[1]/w:r[1]/w:drawing[1]",
+                0);
+}
+
 #endif
 
 CPPUNIT_PLUGIN_IMPLEMENT();

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -4210,8 +4210,9 @@ void DocxAttributeOutput::WritePostponedDMLDrawing()
          it != m_postponedDMLDrawing->end();
          ++it )
     {
-        if ( IsAlternateContentChoiceOpen() )
-            m_rExport.SdrExporter().writeDMLDrawing(it->object, (it->frame), m_anchorId++);
+        // Avoid w:drawing within another w:drawing.
+        if ( IsAlternateContentChoiceOpen() && !( m_rExport.SdrExporter().IsDrawingOpen()) )
+           m_rExport.SdrExporter().writeDMLDrawing(it->object, (it->frame), m_anchorId++);
         else
             m_rExport.SdrExporter().writeDMLAndVMLDrawing(it->object, *(it->frame), *(it->point), m_anchorId++);
     }

sw/source/filter/ww8/docxsdrexport.cxx

@@ -142,6 +142,7 @@ struct DocxSdrExport::Impl
     sax_fastparser::FastAttributeList* m_pTextboxAttrList;
     OStringBuffer m_aTextFrameStyle;
     bool m_bFrameBtLr;
+    bool m_bDrawingOpen;
     bool m_bFlyFrameGraphic;
     sax_fastparser::FastAttributeList* m_pFlyFillAttrList;
     sax_fastparser::FastAttributeList* m_pFlyWrapAttrList;
@@ -162,6 +163,7 @@ struct DocxSdrExport::Impl
           m_pFlyAttrList(0),
           m_pTextboxAttrList(0),
           m_bFrameBtLr(false),
+          m_bDrawingOpen(false),
           m_bFlyFrameGraphic(false),
           m_pFlyFillAttrList(0),
           m_pFlyWrapAttrList(0),
@@ -239,6 +241,11 @@ bool DocxSdrExport::getFrameBtLr()
     return m_pImpl->m_bFrameBtLr;
 }
 
+bool DocxSdrExport::IsDrawingOpen()
+{
+    return m_pImpl->m_bDrawingOpen;
+}
+
 sax_fastparser::FastAttributeList*& DocxSdrExport::getFlyFillAttrList()
 {
     return m_pImpl->m_pFlyFillAttrList;
@@ -266,6 +273,7 @@ void DocxSdrExport::setFlyWrapAttrList(sax_fastparser::FastAttributeList* pAttrL
 
 void DocxSdrExport::startDMLAnchorInline(const SwFrmFmt* pFrmFmt, const Size& rSize)
 {
+    m_pImpl->m_bDrawingOpen = true;
     m_pImpl->m_pSerializer->startElementNS(XML_w, XML_drawing, FSEND);
 
     const SvxLRSpaceItem pLRSpaceItem = pFrmFmt->GetLRSpace(false);
@@ -529,6 +537,7 @@ void DocxSdrExport::endDMLAnchorInline(const SwFrmFmt* pFrmFmt)
     m_pImpl->m_pSerializer->endElementNS(XML_wp, isAnchor ? XML_anchor : XML_inline);
 
     m_pImpl->m_pSerializer->endElementNS(XML_w, XML_drawing);
+    m_pImpl->m_bDrawingOpen = false;
 }
 
 void DocxSdrExport::writeVMLDrawing(const SdrObject* sdrObj, const SwFrmFmt& rFrmFmt,const Point& rNdTopLeft)

sw/source/filter/ww8/docxsdrexport.hxx

@@ -63,6 +63,8 @@ public:
     OStringBuffer& getTextFrameStyle();
     /// Same, as DocxAttributeOutput::m_bBtLr, but for textframe rotation.
     bool getFrameBtLr();
+
+    bool IsDrawingOpen();
     sax_fastparser::FastAttributeList*& getFlyFillAttrList();
     sax_fastparser::FastAttributeList* getFlyWrapAttrList();
     void setFlyWrapAttrList(sax_fastparser::FastAttributeList* pAttrList);