tdf#116404 filter\ww8: use bidi for default style in RTL locale

A new document uses the default value of ::Environment for the
RES_FRAMEDIR property. On export, of course a default value does
nothing, and for MS formats a nothing means LTR, even though
in Writer the styles setting was determined by the Locale. So RTL
users were finding their new documents switch to LTR style values
when round-tripping to MS formats.

Since this is properly handled when the property is ::SET (as it normally
is when a document is imported), make sure the the default paragraph
style's RES_FRAMEDIR is ::SET, and the export should take care of it.

This works out of the box for DOCX. The export for the other
formats needs a bit of extra tweaking in addition to this
general patch. The tweaking will be done separately.

Change-Id: I5134a636ee3374bb2c1081fd0f3f6d9e79634cd3
Reviewed-on: https://gerrit.libreoffice.org/66964
Tested-by: Jenkins
Reviewed-by: Justin Luth <justin_luth@sil.org>

sw/source/filter/ww8/wrtw8sty.cxx

@@ -43,6 +43,7 @@
 #include <ndtxt.hxx>
 #include <ftninfo.hxx>
 #include <fmthdft.hxx>
+#include <frmatr.hxx>
 #include <section.hxx>
 #include <fmtcntnt.hxx>
 #include <fmtftn.hxx>
@@ -597,6 +598,10 @@ void MSWordStyles::OutputStyle( SwFormat* pFormat, sal_uInt16 nPos )
         {
             assert( pFormat->GetPoolFormatId() == RES_POOLCOLL_STANDARD );
             aName = "Normal";
+
+            // force bidi property to be SET, so that it exports an appropriate locale value
+            if ( SfxItemState::SET != pFormat->GetItemState(RES_FRAMEDIR, false) )
+                pFormat->SetFormatAttr(pFormat->GetFrameDir());
         }
         else if (aName.equalsIgnoreAsciiCase("Normal"))
         {