tdf#93403 check for changed DataSource on all Controls on form reload

1) OBoundControlModel: when reload() asks us to connect to database column,
   redo it even if it was previously done.

2) FmXGridPeer: when getting Reloaded event that we subscribed to
   (and specifically from frm::ODatabaseFrom), pass along the event
   to all columns before we treat it. The columns (controls) are
   themselves subscribed to it, but they may get the event after us,
   which means our treatment still uses stale data, which we continue
   to display.

   The column controls should continue to subscribe by themselves for
   the case that they are not in a grid, but direct children of the
   form.

Change-Id: I0cbcf2dc792e8650157a69ddc414d755de0e549a

forms/source/component/FormComponent.cxx

@@ -2039,7 +2039,7 @@ void OBoundControlModel::impl_connectDatabaseColumn_noNotify( bool _bFromReload
     OSL_ENSURE( xRowSet.is(), "OBoundControlModel::impl_connectDatabaseColumn_noNotify: no row set!" );
     if ( !xRowSet.is() )
         return;
-    if ( !hasField() )
+    if ( !hasField() || _bFromReload )
     {
         // connect to the column
         connectToField( xRowSet );

svx/source/fmcomp/fmgridif.cxx

@@ -1568,8 +1568,19 @@ void FmXGridPeer::unloading(const EventObject& /*aEvent*/) throw( RuntimeExcepti
 }
 
 
-void FmXGridPeer::reloaded(const EventObject& /*aEvent*/) throw( RuntimeException, std::exception )
+void FmXGridPeer::reloaded(const EventObject& aEvent) throw( RuntimeException, std::exception )
 {
+    {
+        const sal_Int32 cnt = m_xColumns->getCount();
+        for(sal_Int32 i=0; i<cnt; ++i)
+        {
+            Reference< XLoadListener> xll(m_xColumns->getByIndex(i), UNO_QUERY);
+            if(xll.is())
+            {
+                xll->reloaded(aEvent);
+            }
+        }
+    }
     updateGrid(m_xCursor);
 }