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<?php
class CachedMenu
{
private $menu;
private $cached_string;
public function __construct(Menu $menu)
{
$this->menu = $menu;
$this->build_cached_string();
}
private function build_cached_string()
{
if (self::need_cached_string($this->menu))
{
$this->cached_string = $this->menu->display();
}
}
public function get_menu()
{
return $this->menu;
}
public function get_cached_string()
{
return $this->cached_string;
}
public function has_cached_string()
{
return !empty($this->cached_string);
}
public static function need_cached_string(Menu $menu)
{
return $menu->need_cached_string();
}
}
?>