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