156 lines
3.4 KiB
PHP
156 lines
3.4 KiB
PHP
<?php
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/*
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* This file is part of the Symfony package.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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namespace Symfony\Component\EventDispatcher;
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use Symfony\Contracts\EventDispatcher\Event;
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/**
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* Event encapsulation class.
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*
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* Encapsulates events thus decoupling the observer from the subject they encapsulate.
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*
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* @author Drak <drak@zikula.org>
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*
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* @implements \ArrayAccess<string, mixed>
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* @implements \IteratorAggregate<string, mixed>
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*/
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class GenericEvent extends Event implements \ArrayAccess, \IteratorAggregate
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{
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/**
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* Encapsulate an event with $subject and $arguments.
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*
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* @param mixed $subject The subject of the event, usually an object or a callable
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* @param array $arguments Arguments to store in the event
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*/
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public function __construct(
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protected mixed $subject = null,
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protected array $arguments = [],
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) {
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}
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/**
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* Getter for subject property.
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*/
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public function getSubject(): mixed
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{
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return $this->subject;
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}
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/**
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* Get argument by key.
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*
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* @throws \InvalidArgumentException if key is not found
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*/
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public function getArgument(string $key): mixed
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{
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if ($this->hasArgument($key)) {
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return $this->arguments[$key];
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}
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throw new \InvalidArgumentException(\sprintf('Argument "%s" not found.', $key));
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}
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/**
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* Add argument to event.
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*
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* @return $this
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*/
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public function setArgument(string $key, mixed $value): static
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{
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$this->arguments[$key] = $value;
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return $this;
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}
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/**
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* Getter for all arguments.
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*/
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public function getArguments(): array
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{
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return $this->arguments;
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}
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/**
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* Set args property.
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*
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* @return $this
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*/
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public function setArguments(array $args = []): static
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{
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$this->arguments = $args;
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return $this;
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}
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/**
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* Has argument.
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*/
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public function hasArgument(string $key): bool
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{
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return \array_key_exists($key, $this->arguments);
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}
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/**
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* ArrayAccess for argument getter.
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*
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* @param string $key Array key
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*
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* @throws \InvalidArgumentException if key does not exist in $this->args
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*/
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public function offsetGet(mixed $key): mixed
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{
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return $this->getArgument($key);
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}
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/**
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* ArrayAccess for argument setter.
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*
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* @param string $key Array key to set
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*/
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public function offsetSet(mixed $key, mixed $value): void
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{
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$this->setArgument($key, $value);
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}
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/**
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* ArrayAccess for unset argument.
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*
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* @param string $key Array key
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*/
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public function offsetUnset(mixed $key): void
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{
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if ($this->hasArgument($key)) {
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unset($this->arguments[$key]);
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}
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}
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/**
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* ArrayAccess has argument.
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*
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* @param string $key Array key
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*/
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public function offsetExists(mixed $key): bool
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{
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return $this->hasArgument($key);
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}
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/**
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* IteratorAggregate for iterating over the object like an array.
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*
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* @return \ArrayIterator<string, mixed>
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*/
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public function getIterator(): \ArrayIterator
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{
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return new \ArrayIterator($this->arguments);
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}
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}
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