public DragScrollActivity(
ScrollActivityDelegate del,
ScrollDragController controller
) : base(del)
{
this._controller = controller;
}
public override void dispose()
{
if (this._currentDrag != null)
{
this._currentDrag.dispose();
this._currentDrag = null;
}
base.dispose();
}
public override void dispose()
{
if (_currentDrag != null)
{
_currentDrag.dispose();
_currentDrag = null;
}
base.dispose();
}
public override Drag drag(DragStartDetails details, VoidCallback dragCancelCallback)
{
ScrollDragController drag = new ScrollDragController(
del: this,
details: details,
onDragCanceled: dragCancelCallback,
carriedVelocity: this.physics.carriedMomentum(this._heldPreviousVelocity),
motionStartDistanceThreshold: this.physics.dragStartDistanceMotionThreshold
);
this.beginActivity(new DragScrollActivity(this, drag));
D.assert(this._currentDrag == null);
this._currentDrag = drag;
return(drag);
}
public override void dispose()
{
this._controller = null;
base.dispose();
}