Combined items

Combined item has selection ranging over all its child items. This can be seen when the combined item is selected or focused:

Combined items - selection

Child items of the combined item are still interactive, though not focusable/selectable. They can contain further children (be expanded/collapsed with expand button as well) and can contain interactive check boxes. The visual part of combined child items is also fully available, to the child items can contain images and even sub-items.

To set-up combined items, simply set AllowSelectChildItems property to false on all items you wish to combine.

Combined items can be used in any level of item hierarchy.