Properties: mask layer property for items that can't set it

pcbnew/pad.cpp

@@ -1726,6 +1726,8 @@ static struct PAD_DESC
         REGISTER_TYPE( PAD );
         propMgr.InheritsAfter( TYPE_HASH( PAD ), TYPE_HASH( BOARD_CONNECTED_ITEM ) );
 
+        propMgr.Mask( TYPE_HASH( PAD ), TYPE_HASH( BOARD_CONNECTED_ITEM ), _HKI( "Layer" ) );
+
         propMgr.AddProperty( new PROPERTY<PAD, double>( _HKI( "Orientation" ),
                     &PAD::SetOrientationDegrees, &PAD::GetOrientationDegrees,
                     PROPERTY_DISPLAY::PT_DEGREE ) );

pcbnew/pcb_track.cpp

@@ -1279,10 +1279,11 @@ static struct TRACK_VIA_DESC
         REGISTER_TYPE( PCB_VIA );
         propMgr.InheritsAfter( TYPE_HASH( PCB_VIA ), TYPE_HASH( BOARD_CONNECTED_ITEM ) );
 
-        // TODO layerset for vias?
         // TODO test drill, use getdrillvalue?
         const wxString groupVia = _( "Via Properties" );
 
+        propMgr.Mask( TYPE_HASH( PCB_VIA ), TYPE_HASH( BOARD_CONNECTED_ITEM ), _HKI( "Layer" ) );
+
         propMgr.ReplaceProperty( TYPE_HASH( PCB_TRACK ), _HKI( "Width" ),
             new PROPERTY<PCB_VIA, int, PCB_TRACK>( _HKI( "Diameter" ),
             &PCB_VIA::SetWidth, &PCB_VIA::GetWidth, PROPERTY_DISPLAY::PT_SIZE ) );