tdf#44399 Do not display 0 decimal for General format

For General (Standard) format, "0" is not the number of decimal places
Replaced by an empty string in dialog UI and Sidebar.

Change-Id: Ia367b491b71fa7b4480cdd03408c0c0315425dc8
Reviewed-on: https://gerrit.libreoffice.org/17439Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>

cui/source/tabpages/numfmt.cxx

@@ -982,7 +982,10 @@ void SvxNumberFormatTabPage::UpdateOptions_Impl( bool bCheckCatChange /*= sal_Fa
             m_pEdLeadZeroes->Enable();
             m_pBtnNegRed->Enable();
             m_pBtnThousand->Enable();
-            m_pEdDecimals->SetText( OUString::number( nDecimals ) );
+            if ( nCategory == CAT_NUMBER && m_pLbFormat->GetSelectEntryPos() == 0 )
+                m_pEdDecimals->SetText( "" ); //General format tdf#44399
+            else
+                m_pEdDecimals->SetText( OUString::number( nDecimals ) );
             m_pEdLeadZeroes->SetText( OUString::number( nZeroes ) );
             m_pBtnNegRed->Check( bNegRed );
             m_pBtnThousand->Check( bThousand );
@@ -1569,6 +1572,10 @@ IMPL_LINK( SvxNumberFormatTabPage, OptHdl_Impl, void *, pOptCtrl )
         sal_uInt16        nLeadZeroes   = (m_pEdLeadZeroes->IsEnabled())
                                         ? (sal_uInt16)m_pEdLeadZeroes->GetValue()
                                         : (sal_uInt16)0;
+        if ( pNumFmtShell->GetStandardName() == m_pEdFormat->GetText() )
+        {
+            m_pEdDecimals->SetValue( nPrecision );
+        }
 
         pNumFmtShell->MakeFormat( aFormat,
                                   bThousand, bNegRed,

sc/source/ui/sidebar/NumberFormatPropertyPanel.cxx

@@ -320,7 +320,10 @@ void NumberFormatPropertyPanel::NotifyItemUpdate(
             }
             mpBtnThousand->Check(bThousand);
             mpBtnNegRed->Check(bNegRed);
-            mpEdDecimals->SetValue(nPrecision);
+            if ( mpLbCategory->GetSelectEntryPos() == 0 )
+                mpEdDecimals->SetText(""); // tdf#44399
+            else
+                mpEdDecimals->SetValue(nPrecision);
             mpEdLeadZeroes->SetValue(nLeadZeroes);
         }
     default: