Attach all of the handlers for each type.
$key: One of 'argument', 'field', 'sort', 'filter', 'relationship'
$info: The $info from viewsHandlerTypes for this object.
protected function _initHandler($key, $info) {
// Load the requested items from the display onto the object.
$this->{$key} = $this->display_handler
->getHandlers($key);
// This reference deals with difficult PHP indirection.
$handlers =& $this->{$key};
// Run through and test for accessibility.
foreach ($handlers as $id => $handler) {
if (!$handler
->access()) {
unset($handlers[$id]);
}
}
}