boolean
Specifies whether the drag action should be canceled.
BlockModel | null
Specifies the block model that is being dragged.
number
Specifies the index where the block is intended to be dropped.
Event
Specifies the native event (e.g., mouse or drag event) that triggered the block drag action.
number
Specifies the index of the block from which the drag started.
HTMLElement | null
Specifies the target HTML element where the block is being dragged from.