/**
* Return log writers
*
* @return array
*/
public static function getWriters()
{
if (is_null(self::$_writers)) {
$writers = Config::getInstance("JooS_Log")->writers;
/* @var $writers JooS_Config */
if (!is_null($writers)) {
foreach ($writers->valueOf() as $name) {
$name = ucfirst(strtolower($name));
$className = Loader::getClassName(__NAMESPACE__ . "\\", $name);
if (Loader::loadClass($className)) {
$writer = new $className();
if ($writer instanceof Log_Interface) {
self::addWriter($writer);
}
}
}
} else {
self::$_writers = array();
}
}
return self::$_writers;
}
/**
* Creates a new helper's instance
*
* @param string $helper Name
*
* @return Helper_Interface
*/
private function _getHelper($helper)
{
$instance = null;
foreach ($this->_prefixes as $prefix) {
$className = $prefix . "\\" . $helper;
if (Loader::loadClass($className)) {
if (is_subclass_of($className, __NAMESPACE__ . "\\Helper_Interface")) {
$instance = new $className();
/* @var $instance Helper_Interface */
$instance->setSubject($this->_subject);
}
break;
}
}
return $instance;
}
/**
* Notify observers.
*
* @return Event
*/
public final function notify()
{
$observers = array_values($this->_observers);
foreach ($observers as $observer) {
switch (false) {
case is_array($observer):
case isset($observer[0]):
case isset($observer[1]):
case is_string($observer[0]):
break;
default:
Loader::loadClass($observer[0]);
break;
}
if (!is_callable($observer)) {
continue;
}
call_user_func($observer, $this);
}
return $this;
}
