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(Object owner) {
super.attach(owner);
Layer child = firstChild;
while (child != null) {
child.attach(owner);
child = child.nextSibling;
}
}