dragEvent constant Null safety

EventStreamProvider<MouseEvent> const dragEvent

A stream of drag events fired when an element is currently being dragged.

A drag event is added to this stream as soon as the drag begins. A drag event is also added to this stream at intervals while the drag operation is still ongoing.

Other resources

Implementation

static const EventStreamProvider<MouseEvent> dragEvent =
    const EventStreamProvider<MouseEvent>('drag');