/**
* Static initializer for User_Agent that loads capabilities from the cookie
* into a static object via self::parse_capabilities. If a cookie is not
* set, this returns false.
*
* @return bool
*/
public static function init()
{
/**
* If initialized, return initialized value without reprocessing.
*/
if (self::$_init !== null) {
return self::$_init;
}
/**
* Define name of the cookie set by asets/js/core/server.js.
*/
self::$_name = 'classification';
/**
* If cookie is set, extract contents and parse the JSON into a PHP
* object, then setting initialized value to true. Otherwise, set it
* false, as initialization has failed since no cookie is defined.
*/
self::$_cookie = Cookie::get(self::$_name);
if (isset(self::$_cookie)) {
$capabilities = self::$_cookie;
self::$_capabilities = self::parse($capabilities);
self::$_init = true;
} else {
self::$_init = false;
}
/**
* Return whether initialization succeeded or failed.
*/
return self::$_init;
}