onMouseUp property Null safety

EventStream<MouseEvent> onMouseUp

Dispatched when a user releases the pointing device button over an InteractiveObject instance.

If the target is a SimpleButton instance, the object displays the upState display object. If the target is a selectable text field, the text field ends selection as the default behavior.

Implementation

EventStream<MouseEvent> get onMouseUp =>
    InteractiveObject.mouseUpEvent.forTarget(this);