Index: obj_padstack_op.c
===================================================================
--- obj_padstack_op.c	(revision 12398)
+++ obj_padstack_op.c	(revision 12399)
@@ -138,3 +138,17 @@
 	return NULL;
 }
 
+void *pcb_padstackop_change_thermal(pcb_opctx_t *ctx, pcb_padstack_t *ps)
+{
+	pcb_undo_add_obj_to_clear_poly(PCB_TYPE_PADSTACK, ps, ps, ps, pcb_false);
+	pcb_poly_restore_to_poly(PCB->Data, PCB_TYPE_PADSTACK, CURRENT, ps);
+
+#warning TODO: undo + get PCB in ctx + get INDEXOFCURRENT/CURRENT in ctx
+	pcb_padstack_set_thermal(ps, INDEXOFCURRENT, ctx->chgtherm.style);
+
+	pcb_undo_add_obj_to_clear_poly(PCB_TYPE_PADSTACK, ps, ps, ps, pcb_true);
+	pcb_poly_clear_from_poly(PCB->Data, PCB_TYPE_PADSTACK, CURRENT, ps);
+	pcb_via_invalidate_draw(ps);
+	return ps;
+}
+