dragEvent constant Null safety
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
- Drag and drop sample based on the tutorial from HTML5Rocks.
- Drag and drop specification from WHATWG.
Implementation
static const EventStreamProvider<MouseEvent> dragEvent =
const EventStreamProvider<MouseEvent>('drag');