mouseWheelEvent constant Null safety

EventStreamProvider<WheelEvent> const mouseWheelEvent

Static factory designed to expose mousewheel events to event handlers that are not necessarily instances of Element.

See EventStreamProvider for usage information.

Implementation

static const EventStreamProvider<WheelEvent> mouseWheelEvent =
    const _CustomEventStreamProvider<WheelEvent>(
        Element._determineMouseWheelEventType)