// return the level distance to the current node
public int getDistance(Node node) {
Node myParent = node.getParent();
int level = 1;
while (myParent != null && myParent != this) {
level++;
myParent = myParent.getParent();
}
return level;
}
/**
* Is passed node a child of current node
*
* @param aNode
*/
public boolean isNodeChild(Node aNode) {
boolean retval;
if (aNode == null) {
retval = false;
} else {
if (getChildCount() == 0) {
retval = false;
} else {
retval = (aNode.getParent() == this);
}
}
return retval;
}
/** Is parsed in node a sibling */
public boolean isNodeSibling(Node anotherNode) {
boolean retval;
if (anotherNode == null) {
retval = false;
} else if (anotherNode == this) {
retval = true;
} else {
Node myParent = getParent();
retval = (myParent != null && myParent == anotherNode.getParent());
if (retval && !((Node) getParent()).isNodeChild(anotherNode)) {
throw new Error("sibling has different parent");
}
}
return retval;
}