sw: fix newly created document being modified

After the document is created, an event is dispatched on the main loop
that calls SfxPickList::Notify(), which modifies document properties.

It tries to prevent setting the document to modified by calling
SfxObjectShell::EnableSetModified(false), but Writer cunningly outwits
it by simply having its own independent(?) modified flag that is set
unconditionally in DocumentStatisticsManager::DocInfoChgd().

Let's assume that if the modified flag shouldn't be modified in
SfxObjectShell, it shouldn't be modified in DocumentStatisticsManager.

Somehow in 4.4 and 4.3 the same thing was going on, but it didn't result
in a visibly enabled Save icon in the UI, but with 5.0 it does - cannot
easily bisect why that changed due to tdf#91383.

Change-Id: Id30fd831eb29910c9fb44ed3031bf8da23586bea
(cherry picked from commit 5adc8ee3)
Reviewed-on: https://gerrit.libreoffice.org/18388Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Miklos Vajna <vmiklos@collabora.co.uk>

sw/inc/IDocumentStatistics.hxx

@@ -31,7 +31,7 @@ public:
     /** DocInfo has changed (notify via DocShell):
         make required fields update.
     */
-    virtual void DocInfoChgd() = 0;
+    virtual void DocInfoChgd(bool isEnableSetModified) = 0;
 
     /** Document - Statistics
     */

sw/source/core/doc/DocumentStatisticsManager.cxx

@@ -77,11 +77,14 @@ DocumentStatisticsManager::DocumentStatisticsManager( SwDoc& i_rSwdoc ) : m_rDoc
     maStatsUpdateTimer.SetTimeoutHdl( LINK( this, DocumentStatisticsManager, DoIdleStatsUpdate ) );
 }
 
-void DocumentStatisticsManager::DocInfoChgd( )
+void DocumentStatisticsManager::DocInfoChgd(bool const isEnableSetModified)
 {
     m_rDoc.getIDocumentFieldsAccess().GetSysFieldType( RES_DOCINFOFLD )->UpdateFields();
     m_rDoc.getIDocumentFieldsAccess().GetSysFieldType( RES_TEMPLNAMEFLD )->UpdateFields();
-    m_rDoc.getIDocumentState().SetModified();
+    if (isEnableSetModified)
+    {
+        m_rDoc.getIDocumentState().SetModified();
+    }
 }
 
 const SwDocStat& DocumentStatisticsManager::GetDocStat() const

sw/source/core/inc/DocumentStatisticsManager.hxx

@@ -37,7 +37,7 @@ public:
 
     DocumentStatisticsManager( SwDoc& i_rSwdoc );
 
-    void DocInfoChgd() SAL_OVERRIDE;
+    void DocInfoChgd(bool isEnableSetModified) SAL_OVERRIDE;
     const SwDocStat &GetDocStat() const SAL_OVERRIDE;
     SwDocStat & GetDocStat(); //Non const version of the above, not part of the interface.
     const SwDocStat &GetUpdatedDocStat(bool bCompleteAsync = false, bool bFields = true) SAL_OVERRIDE;

sw/source/uibase/app/docsh2.cxx

@@ -207,7 +207,7 @@ void SwDocShell::DoFlushDocInfo()
         m_pWrtShell->StartAllAction();
     }
 
-    m_pDoc->getIDocumentStatistics().DocInfoChgd();
+    m_pDoc->getIDocumentStatistics().DocInfoChgd(IsEnableSetModified());
 
     if (m_pWrtShell)
     {
@@ -296,8 +296,9 @@ void SwDocShell::Notify( SfxBroadcaster&, const SfxHint& rHint )
                     EnableSetModified( false );
                 // #i41679#
                 const bool bIsDocModified = m_pDoc->getIDocumentState().IsModified();
+                // TODO: is the ResetModified() below because of only the direct call from DocInfoChgd, or does UpdateFields() set it too?
 
-                m_pDoc->getIDocumentStatistics().DocInfoChgd( );
+                m_pDoc->getIDocumentStatistics().DocInfoChgd(false);
 
                 // #i41679#
                 if ( !bIsDocModified )