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<?php
declare(strict_types=1);
/**
* @copyright Copyright (c) 2019 Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
*
* @license GNU AGPL version 3 or any later version
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
namespace OCP\EventDispatcher;
use ArrayAccess;
use ArrayIterator;
use InvalidArgumentException;
use IteratorAggregate;
use Traversable;
use function array_key_exists;
/**
* Class GenericEvent
*
* convenience reimplementation of \Symfony\Component\GenericEvent against
* \OCP\EventDispatcher\Event
*
* @package OCP\EventDispatcher
* @since 18.0.0
*/
class GenericEvent extends Event implements ArrayAccess, IteratorAggregate {
protected $subject;
protected $arguments;
/**
* Encapsulate an event with $subject and $args.
*
* @since 18.0.0
*/
public function __construct($subject = null, array $arguments = []) {
$this->subject = $subject;
$this->arguments = $arguments;
}
/**
* Getter for subject property.
*
* @since 18.0.0
*/
public function getSubject() {
return $this->subject;
}
/**
* Get argument by key.
*
* @throws InvalidArgumentException if key is not found
* @since 18.0.0
*/
public function getArgument(string $key) {
if ($this->hasArgument($key)) {
return $this->arguments[$key];
}
throw new InvalidArgumentException(sprintf('Argument "%s" not found.', $key));
}
/**
* Add argument to event.
*
* @since 18.0.0
*/
public function setArgument($key, $value): GenericEvent {
$this->arguments[$key] = $value;
return $this;
}
/**
* Getter for all arguments.
*
* @since 18.0.0
*/
public function getArguments(): array {
return $this->arguments;
}
/**
* Set args property.
*
* @since 18.0.0
*/
public function setArguments(array $args = []): GenericEvent {
$this->arguments = $args;
return $this;
}
/**
* Has argument.
*
* @since 18.0.0
*/
public function hasArgument($key): bool {
return array_key_exists($key, $this->arguments);
}
/**
* Retrieve an external iterator
*
* @link https://php.net/manual/en/iteratoraggregate.getiterator.php
* @since 18.0.0
*/
public function getIterator(): Traversable {
return new ArrayIterator($this->arguments);
}
/**
* Whether a offset exists
*
* @link https://php.net/manual/en/arrayaccess.offsetexists.php
* @since 18.0.0
*/
public function offsetExists($offset): bool {
return $this->hasArgument($offset);
}
/**
* Offset to retrieve
*
* @link https://php.net/manual/en/arrayaccess.offsetget.php
* @since 18.0.0
*/
public function offsetGet($offset) {
return $this->arguments[$offset];
}
/**
* Offset to set
*
* @link https://php.net/manual/en/arrayaccess.offsetset.php
* @since 18.0.0
*/
public function offsetSet($offset, $value): void {
$this->setArgument($offset, $value);
}
/**
* Offset to unset
*
* @link https://php.net/manual/en/arrayaccess.offsetunset.php
* @since 18.0.0
*/
public function offsetUnset($offset): void {
if ($this->hasArgument($offset)) {
unset($this->arguments[$offset]);
}
}
}
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