fdo#72563 : PAGEREF field tag not preserved during Roundtrip

There was a problem that in case of TOC,PAGEREF field tag was not preserved
inside <hyperlink> during Roundtrip.
Reason found, there was no code support to handle PAGEREF in export.
- Added code support in export code to handle PAGEREF.
- Also added <w:webHidden /> tag for PAGEREF
- Earlier pushed code changes was corrupting some documents.
- Verified this patch on large set of Docx containing different combination of hyperlinks.

Conflicts:
	sw/qa/extras/ooxmlexport/ooxmlexport.cxx
Reviewed on:
	https://gerrit.libreoffice.org/8048

Change-Id: I2331a33100ed77e15a39ecc6db01b0e696ea62de

sw/qa/extras/ooxmlexport/ooxmlexport.cxx

@@ -2413,7 +2413,7 @@ DECLARE_OOXMLEXPORT_TEST(testFdo69649, "fdo69649.docx")
     xmlDocPtr pXmlDoc = parseExport("word/document.xml");
     if (!pXmlDoc)
         return;
-    xmlNodeSetPtr pXmlNodes = getXPathNode(pXmlDoc,"/w:document/w:body/w:p[21]/w:hyperlink/w:r[2]/w:t");
+    xmlNodeSetPtr pXmlNodes = getXPathNode(pXmlDoc,"/w:document/w:body/w:p[21]/w:hyperlink/w:r[5]/w:t");
     xmlNodePtr pXmlNode = pXmlNodes->nodeTab[0];
     OUString contents = OUString::createFromAscii((const char*)((pXmlNode->children[0]).content));
     CPPUNIT_ASSERT(contents.match("15"));
@@ -3683,6 +3683,19 @@ DECLARE_OOXMLEXPORT_TEST(testAlphabeticalIndex_MultipleColumns,"alphabeticalInde
     assertXPath(pXmlDoc, "/w:document/w:body/w:p[9]/w:pPr/w:sectPr/w:type","val","continuous");
 }
 
+DECLARE_OOXMLEXPORT_TEST(testPageref, "testPageref.docx")
+{
+    // fdo#72563 : There was a problem that in case of TOC,PAGEREF field tag was not preserved during Roundtrip
+    // This test case is to verify that PAGEREF tag is coming with proper values inside <hyperlink> tag.
+    xmlDocPtr pXmlDoc = parseExport();
+    if (!pXmlDoc)
+        return;
+    xmlNodeSetPtr pXmlNodes = getXPathNode(pXmlDoc,"/w:document/w:body/w:p[2]/w:hyperlink/w:r[3]/w:instrText");
+    xmlNodePtr pXmlNode = pXmlNodes->nodeTab[0];
+    OUString contents = OUString::createFromAscii((const char*)((pXmlNode->children[0]).content));
+    CPPUNIT_ASSERT(contents.match("PAGEREF _Toc355095261 \\h"));
+}
+
 #endif
 
 CPPUNIT_PLUGIN_IMPLEMENT();

sw/source/filter/ww8/docxattributeoutput.cxx

@@ -682,6 +682,39 @@ void DocxAttributeOutput::EndRun()
     DoWriteBookmarks( );
     DoWriteAnnotationMarks( );
 
+    if( m_closeHyperlinkInThisRun && m_startedHyperlink && m_hyperLinkAnchor != "" && m_hyperLinkAnchor.startsWith("_Toc"))
+        {
+            OUString sToken;
+            m_pSerializer->startElementNS( XML_w, XML_r, FSEND );
+            m_pSerializer->startElementNS( XML_w, XML_rPr, FSEND );
+            m_pSerializer->singleElementNS( XML_w, XML_webHidden, FSEND );
+            m_pSerializer->endElementNS( XML_w, XML_rPr );
+            m_pSerializer->startElementNS( XML_w, XML_fldChar,
+                    FSNS( XML_w, XML_fldCharType ), "begin",
+                    FSEND );
+            m_pSerializer->endElementNS( XML_w, XML_fldChar );
+            m_pSerializer->endElementNS( XML_w, XML_r );
+
+
+            m_pSerializer->startElementNS( XML_w, XML_r, FSEND );
+            m_pSerializer->startElementNS( XML_w, XML_rPr, FSEND );
+            m_pSerializer->singleElementNS( XML_w, XML_webHidden, FSEND );
+            m_pSerializer->endElementNS( XML_w, XML_rPr );
+            sToken = "PAGEREF " + m_hyperLinkAnchor + " \\h"; // '\h' Creates a hyperlink to the bookmarked paragraph.
+            DoWriteCmd( sToken );
+            m_pSerializer->endElementNS( XML_w, XML_r );
+
+            // Write the Field separator
+            m_pSerializer->startElementNS( XML_w, XML_r, FSEND );
+            m_pSerializer->startElementNS( XML_w, XML_rPr, FSEND );
+            m_pSerializer->singleElementNS( XML_w, XML_webHidden, FSEND );
+            m_pSerializer->endElementNS( XML_w, XML_rPr );
+            m_pSerializer->singleElementNS( XML_w, XML_fldChar,
+                    FSNS( XML_w, XML_fldCharType ), "separate",
+                    FSEND );
+            m_pSerializer->endElementNS( XML_w, XML_r );
+        }
+
     m_pSerializer->startElementNS( XML_w, XML_r, FSEND );
     if(GetExport().bTabInTOC && m_pHyperlinkAttrList)
     {
@@ -691,7 +724,6 @@ void DocxAttributeOutput::EndRun()
 
     // write the run start + the run content
     m_pSerializer->mergeTopMarks(); // merges the "actual run start"
-
     // append the actual run end
     m_pSerializer->endElementNS( XML_w, XML_r );
 
@@ -712,6 +744,21 @@ void DocxAttributeOutput::EndRun()
     {
         if ( m_startedHyperlink )
         {
+            if( m_endPageRef )
+            {
+                // Hyperlink is started and fldchar "end" needs to be written for PAGEREF
+                m_pSerializer->startElementNS( XML_w, XML_r, FSEND );
+                m_pSerializer->startElementNS( XML_w, XML_rPr, FSEND );
+                m_pSerializer->singleElementNS( XML_w, XML_webHidden, FSEND );
+                m_pSerializer->endElementNS( XML_w, XML_rPr );
+                m_pSerializer->singleElementNS( XML_w, XML_fldChar,
+                        FSNS( XML_w, XML_fldCharType ), "end",
+                        FSEND );
+                m_pSerializer->endElementNS( XML_w, XML_r );
+                m_endPageRef = false;
+                m_hyperLinkAnchor = "";
+            }
+
             m_pSerializer->endElementNS( XML_w, XML_hyperlink );
             m_startedHyperlink = false;
         }
@@ -946,6 +993,7 @@ void DocxAttributeOutput::CmdField_Impl( FieldInfos& rInfos )
            sToken = sToken.replaceAll("NNNN", "dddd");
            sToken = sToken.replaceAll("NN", "ddd");
         }
+
         // Write the Field command
         DoWriteCmd( sToken );
 
@@ -1573,6 +1621,8 @@ bool DocxAttributeOutput::StartURL( const OUString& rUrl, const OUString& rTarge
 
     bool bBookmarkOnly = AnalyzeURL( rUrl, rTarget, &sUrl, &sMark );
 
+    m_hyperLinkAnchor = sMark;
+
     if ( !sMark.isEmpty() && !bBookmarkOnly )
     {
         m_rExport.OutputField( NULL, ww::eHYPERLINK, sUrl );
@@ -1632,6 +1682,10 @@ bool DocxAttributeOutput::StartURL( const OUString& rUrl, const OUString& rTarge
 bool DocxAttributeOutput::EndURL()
 {
     m_closeHyperlinkInThisRun = true;
+    if(m_hyperLinkAnchor != "" && m_hyperLinkAnchor.startsWith("_Toc"))
+    {
+        m_endPageRef = true;
+    }
     return true;
 }
 
@@ -6614,6 +6668,7 @@ DocxAttributeOutput::DocxAttributeOutput( DocxExport &rExport, FSHelperPtr pSeri
       m_pHyperlinkAttrList( NULL ),
       m_pColorAttrList( NULL ),
       m_pBackgroundAttrList( NULL ),
+      m_endPageRef( false ),
       m_pFootnotesList( new ::docx::FootnotesList() ),
       m_pEndnotesList( new ::docx::FootnotesList() ),
       m_footnoteEndnoteRefTag( 0 ),

sw/source/filter/ww8/docxattributeoutput.hxx

@@ -690,7 +690,8 @@ private:
     ::sax_fastparser::FastAttributeList *m_pColorAttrList;
     /// Attributes of the paragraph background
     ::sax_fastparser::FastAttributeList *m_pBackgroundAttrList;
-
+    OUString m_hyperLinkAnchor;
+    bool m_endPageRef;
     ::docx::FootnotesList *m_pFootnotesList;
     ::docx::FootnotesList *m_pEndnotesList;
     int m_footnoteEndnoteRefTag;