description

# onDragLeave property Null safety

ElementStream<MouseEvent> onDragLeave
override

A stream of `dragleave` events fired when an object being dragged over this element leaves this element's target area.

## Other resources

- Drag and drop sample based on the tutorial from HTML5Rocks.
- Drag and drop specification from WHATWG.

## Implementation

    ElementStream<MouseEvent> get onDragLeave => dragLeaveEvent.forElement(this);