tdf#131304 .docx: provide default compatibilityMode value

When a docx is imported without specifying a compat mode,
populate the appropriate compatibilityMode setting,
which will be written out at save time.

"12: Use word processing features specified in ECMA-376.
This is the default."

The immediate benefit for LO is that this will provide a
cacheable result - instead of repeated lookup attempts
for something that doesn't exist.
Perhaps more importantly, it paves the way
for allowing LO to export new documents
as compatible with 2013, while leaving existing
documents at their current level.

Both Word and LO treat the missing compatSetting
correctly as mode 12, so this should not have any
affect on layout or any other compatibility aspect.
Therefore I can't see any reason why
it shouldn't be explicitly written.
MS Word also writes it out on a round-trip.

Writing it out doesn't limit us in any way either.
As soon as it is in docx format, it will be treated
as mode 12 anyway, so why not make it explicit?
Well, I guess that since MS Word has
been filling this in since 2010 at least, we
could "assume" that if it is missing and has been
modified in the past 5 years it was
created by LO and thus treat it differently,
contrary to standard. But that doesn't seem
like a very good idea at all.

Change-Id: If68cecc14bf4446c5ca25fd2dd6eebddf8d954a1
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/90439
Tested-by: Jenkins
Reviewed-by: Justin Luth <justin_luth@sil.org>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Reviewed-by: Miklos Vajna <vmiklos@collabora.com>

2 files changed, 23 insertions, 0 deletions

diff --git a/sw/qa/extras/ooxmlexport/ooxmlexport5.cxx b/sw/qa/extras/ooxmlexport/ooxmlexport5.cxx
index 2e7fa5962fb8..470e47714940 100644
--- a/sw/qa/extras/ooxmlexport/ooxmlexport5.cxx
+++ b/sw/qa/extras/ooxmlexport/ooxmlexport5.cxx
@@ -1007,6 +1007,12 @@ DECLARE_OOXMLEXPORT_TEST(tdf89991_revisionView, "tdf89991.docx")
     {
         assertXPath(pXmlSettings, "/w:settings/w:revisionView", "insDel",     "0");
         assertXPath(pXmlSettings, "/w:settings/w:revisionView", "formatting", "0");
+
+        // There was no compatibilityMode defined.
+        // 12: Use word processing features specified in ECMA-376. This is the default.
+        assertXPath(pXmlSettings, "/w:settings/w:compat/w:compatSetting[1]", "name", "compatibilityMode");
+        assertXPath(pXmlSettings, "/w:settings/w:compat/w:compatSetting[1]", "uri", "http://schemas.microsoft.com/office/word");
+        assertXPath(pXmlSettings, "/w:settings/w:compat/w:compatSetting[1]", "val", "12");
     }
 }
 
diff --git a/writerfilter/source/dmapper/SettingsTable.cxx b/writerfilter/source/dmapper/SettingsTable.cxx
index 7028f06e7fe9..71bff9b68dab 100644
--- a/writerfilter/source/dmapper/SettingsTable.cxx
+++ b/writerfilter/source/dmapper/SettingsTable.cxx
@@ -29,6 +29,7 @@
 #include <com/sun/star/container/XNameContainer.hpp>
 #include <com/sun/star/style/XStyle.hpp>
 #include <com/sun/star/style/XStyleFamiliesSupplier.hpp>
+#include <comphelper/propertysequence.hxx>
 #include <comphelper/sequence.hxx>
 #include <ooxml/resourceids.hxx>
 #include "ConversionHelper.hxx"
@@ -683,6 +684,22 @@ uno::Sequence<beans::PropertyValue> const & SettingsTable::GetThemeFontLangPrope
 
 uno::Sequence<beans::PropertyValue> SettingsTable::GetCompatSettings() const
 {
+    if ( GetWordCompatibilityMode() == -1 )
+    {
+        // the default value for an undefined compatibilityMode is 12 (Word 2007)
+        uno::Sequence<beans::PropertyValue> aCompatSetting( comphelper::InitPropertySequence({
+            { "name", uno::Any(OUString("compatibilityMode")) },
+            { "uri", uno::Any(OUString("http://schemas.microsoft.com/office/word")) },
+            { "val", uno::Any(OUString("12")) } //12: Use word processing features specified in ECMA-376. This is the default.
+        }));
+
+        beans::PropertyValue aValue;
+        aValue.Name = "compatSetting";
+        aValue.Value <<= aCompatSetting;
+
+        m_pImpl->m_aCompatSettings.push_back(aValue);
+    }
+
     return comphelper::containerToSequence(m_pImpl->m_aCompatSettings);
 }