function onDelete(&$controller)
{
$item_id =& $controller->get_model_id();
require_once 'AMP/Content/Nav/Location/Location.php';
$location_source = new AMP_Content_Nav_Location(AMP_Registry::getDbcon());
$criteria = $location_source->makeCriteria(array('layout_id' => $item_id));
$locations =& $location_source->search($criteria);
if (!$locations) {
return false;
}
foreach ($locations as $location) {
$location->delete();
}
}
function _addLocation($location_data)
{
$location = new AMP_Content_Nav_Location($this->dbcon);
$location->setDefaults();
$location->mergeData($location_data);
$location->save();
return $location->id;
}