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.

(cherry picked from commit 0db37d78)

Change-Id: Ia367b491b71fa7b4480cdd03408c0c0315425dc8
Reviewed-on: https://gerrit.libreoffice.org/17771Reviewed-by: Eike Rathke <erack@redhat.com>
Tested-by: Eike Rathke <erack@redhat.com>

cui/source/tabpages/numfmt.cxx

@@ -984,7 +984,10 @@ 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 );
@@ -1571,6 +1574,10 @@ 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: