ec200659da
We can move columns when the row-type is a range (which guarantees that all columns are of the same type), and if the columns are moved within the same parent. Otherwise we would end up with different branches of a tree having different column counts, which we don't allow. Since we require trees to use statically sized row types, the former implies the latter anyway. Change-Id: Iaf9513d3642d6143cd4880937f2c022a0621c70d Reviewed-by: Artem Dyomin <artem.dyomin@qt.io>