/**
* Remove child from children list
*
* @param child
*/
public void remove(Node child) {
childrenList.remove(child);
child.setParent(null);
}
/**
* Add one child and set child's parent to current node
*
* @param node new child
*/
public void addNode(Node node) {
childrenList.add(node);
node.setParent(this);
}
/**
* Remove child at childIndex
*
* @param childIndex child indexs
*/
public void remove(int childIndex) {
Node child = getChildAt(childIndex);
childrenList.remove(childIndex);
child.setParent(null);
}