tdf#112202 writerfilter,sw: fix loss of headers

There are several problems here:

* CloseSectionGroup() is not only called for actual sections in the
  document but also at the end of every special text like comment,
  footnote, etc; only actual sections can set page styles. Writer
  comments use editengine so cannot even contain sections.

* With continous section breaks, headers and footers are inherited from
  the previous section unless defined by the current section;
  SwXText::copyText() did not copy the content of the header on page 4
  to page 5 correctly because it used an SwXTextCursor to create the
  selection, which cannot select the table at the start of the header.

* For continuous section breaks, WW8 import filter has a heuristic to
  find the first page break in the section and set the PageDescName
  property on that node to apply the page style with the headers of the
  new section; do something similar in writerfilter
  SectionPropertyMap::CloseSectionGroup()

Change-Id: I3ebe3d299f83197cbf8f10de46c34de98677626c
Reviewed-on: https://gerrit.libreoffice.org/85213
Tested-by: Jenkins
Reviewed-by: Michael Stahl <michael.stahl@cib.de>
(cherry picked from commit 08f13ab85b5c65b5dc8adfa15918fb3e426fcc3c)
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/86911
Tested-by: Jenkins CollaboraOffice <jenkinscollaboraoffice@gmail.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/writerfilter/source/dmapper/DomainMapper_Impl.cxx b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
index 8356ecb8e8ee..04432a9cb63e 100644
--- a/writerfilter/source/dmapper/DomainMapper_Impl.cxx
+++ b/writerfilter/source/dmapper/DomainMapper_Impl.cxx
@@ -589,7 +589,10 @@ void    DomainMapper_Impl::PopProperties(ContextType eId)
 
     if ( eId == CONTEXT_SECTION )
     {
-        m_pLastSectionContext = m_aPropertyStacks[eId].top( );
+        if (m_aPropertyStacks[eId].size() == 1) // tdf#112202 only top level !!!
+        {
+            m_pLastSectionContext = m_aPropertyStacks[eId].top();
+        }
     }
     else if (eId == CONTEXT_CHARACTER)
     {