attach method
- @override
override
Mark this node as attached to the given owner.
Typically called only from the parent's attach method, and by the
owner to mark the root of a tree as attached.
Subclasses with children should override this method to first call their
inherited attach method, and then attach all their children to the
same owner.
Implementation
@override
void attach(PipelineOwner owner) {
super.attach(owner);
_offset.addListener(markNeedsPaint);
_showCursor.addListener(markNeedsPaint);
}