initializeDragGestureRecognizer method
Implementation
@override
void initializeDragGestureRecognizer(DragGestureRecognizer instance) {
instance
..onDown = ((e) => onlyIfActivated(onDragDown, [e]))
..onStart = ((e) => onlyIfActivated(onDragStart, [e]))
..onUpdate = ((e) => onlyIfActivated(onDragUpdate, [e]))
..onEnd = ((e) => onlyIfActivated(onDragEnd, [e]))
..onCancel = (() => onlyIfActivated(onDragCancel))
..dragStartBehavior = dragStartBehavior;
}