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Events.php
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Events.php
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<?php
/**
* _, __, _, _ __, _ _, _, _
* / \ |_) (_ | | \ | /_\ |\ |
* \ / |_) , ) | |_/ | | | | \|
* ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
*
* Events helper methods class
*
* @package ObsidianWorkspaces
* @subpackage Keruald
* @author Sébastien Santoro aka Dereckson <dereckson@espace-win.org>
* @license http://www.opensource.org/licenses/bsd-license.php BSD
* @filesource
*
*/
/**
* Events
*/
class Events {
/**
* Grabs the first exception among specified items.
*
* @param Travesable $items The items to check
* @return Exception|null If an exception has been found, the first encountered : otherwise, null.
*/
public static function grabException (Traversable $items) {
foreach ($items as $item) {
if ($item instanceof Exception) {
return $item;
}
}
return null;
}
/**
* Calls a set of functions with the specified parameters.
* This is intended for callback purpose.
*
* @param array The functions to call, each item a callable
* @param array The parameters to pass to the functions [optional]
*/
public static function call ($callables, $parameters = []) {
foreach ($callables as $callable) {
if (!is_callable($callable)) {
$ex = static::grabException($parameters);
throw new InvalidArgumentException("Callback for this method.", 0, $previousEx);
}
call_user_func_array($callable, $parameters);
}
}
/**
* Calls a set of functions with the specified parameters.
* If no function is present, throws an exception.
*
* @param array The functions to call, each item a callable
* @param array The parameters to pass to the functions [optional]
* @param Exception The exception to throw if no callback is provided
*/
public static function callOrThrow ($callables, $parameters = [], $exception = null) {
if (!count($callables)) {
//Throws an exception
if ($exception === null) {
$exception = static::grabException($parameters);
}
if ($exception === null) {
$exception = new RuntimeException();
}
throw $exception;
}
static::call($callables, $parameters);
}
}

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