/**
* Get the node whose id matches this node's idref attribute value.
*
* @return the MenuNode whose id matches this node's idref attribute value.
*/
@Override
public MenuNode getRefNode() {
MenuNode refNode = null;
// create one if it does not exist
// should not happen, but can't hurt
if (_idrefList == null) {
String idref = getIdRef();
_makeIdRefList(idref);
}
// Get idrefList
String[] idrefList = _getIdRefList();
// get group node's children
List<MenuNode> children = getChildren();
// Traverse the list. Do the following:
// o get Node from Model's hashMap of nodes and ids
// o check attributes (rendered, disabled, readOnly)
// o if they are ok, return the node
for (int i = 0; i < Array.getLength(idrefList); i++) {
Iterator<MenuNode> childIter = children.iterator();
// All node "id" attribute values had the node's
// system hashcode id appended to the id when
// placed in the model's idNodeMap.
//
// Each id in the idreflist of a group node does
// NOT have this node sys id appended it to it
// and needs to or we won't find the group's
// ref node.
//
// Since group nodes can only point to one of
// its children, we iterate through them, get
// their sys id and append it to idref until
// we find a match (or not).
while (childIter.hasNext()) {
MenuNode childNode = childIter.next();
String nodeSysId = childNode.getNodeSysId();
// Need to append mode's sys id here to create a
// unique id.
String refNodeId = idrefList[i] + nodeSysId;
refNode = (MenuNode) getRootModel().getNode(refNodeId);
// if nothing found, move on to the next child
if (refNode != null) break;
}
if (refNode == null) continue;
// Check the attributes of the found node
if (!refNode.getRendered()
|| refNode.getDisabled()
|| refNode.getReadOnly()
|| !refNode.getVisible()) {
refNode = null;
continue;
}
// Ok, we have a valid RefNode
break;
}
// If no valid node is found,
// log an error
if (refNode == null) {
_LOG.severe("GroupNode " + getLabel() + " refers to no valid node.\n");
return null;
}
return refNode;
}
