Enum DragSource 

pub enum DragSource<'a, K> {
    SameView {
        key: K,
    },
    Foreign {
        payload: &'a DragPayload,
    },
}

Who is dragging, from the receiving source’s point of view.

SameView is an intra-view reorder identified by the dragged row’s key. Foreign is everything else — an in-app drag from another view or an OS drop — carried as a type-erased [DragPayload] the source downcasts itself (e.g. a designer source downcasts to its palette-drop type, a list source to its item type, an OS drop to files). This single distinction is exactly what TabBar already encodes via its source_bar_id.

Variants

SameView

An intra-view reorder; key identifies the dragged row.

Fields

key: K

Foreign

A drag from another view or the OS; downcast payload to interpret it.

Fields

payload: &'a DragPayload