/**
* $Up and $Top need to restore the overlay from the parent and top-level
* scope respectively.
*/
public function obj($name, $arguments = [], $cache = false, $cacheName = null)
{
$overlayIndex = false;
switch ($name) {
case 'Up':
$upIndex = $this->getUpIndex();
if ($upIndex === null) {
user_error('Up called when we\'re already at the top of the scope', E_USER_ERROR);
}
$overlayIndex = $upIndex;
// Parent scope
break;
case 'Top':
$overlayIndex = 0;
// Top-level scope
break;
}
if ($overlayIndex !== false) {
$itemStack = $this->getItemStack();
if (!$this->overlay && isset($itemStack[$overlayIndex][SSViewer_Scope::ITEM_OVERLAY])) {
$this->overlay = $itemStack[$overlayIndex][SSViewer_Scope::ITEM_OVERLAY];
}
}
return parent::obj($name, $arguments, $cache, $cacheName);
}
