/**
* Check to make sure the picking target node being added is of the correct type. If not, issue an
* error.
*
* @param target The node to check that it follows the requirements
* @throws InvalidFieldValueException The node is not a grouping or shape node
*/
protected void checkPickTargetType(VRMLNodeType target) throws InvalidFieldValueException {
if ((target instanceof VRMLGroupingNodeType) || (target instanceof VRMLShapeNodeType)) return;
if (!(target instanceof VRMLProtoInstance))
throw new InvalidFieldValueException(
"pickTarget node not a group or shape node type: " + target.getVRMLNodeName());
VRMLProtoInstance proto = (VRMLProtoInstance) target;
VRMLNodeType node = proto.getImplementationNode();
while ((node != null) && (node instanceof VRMLProtoInstance))
node = ((VRMLProtoInstance) node).getImplementationNode();
if ((node != null)
&& (!(node instanceof VRMLGroupingNodeType) && !(node instanceof VRMLShapeNodeType)))
throw new InvalidFieldValueException(
"pickTarget proto instance not a group or shape node type: " + target.getVRMLNodeName());
}
