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ðŸ“„ AbstractEvent.php(4.12 KB)
ðŸ“ Command
ðŸ“„ Dispatcher.php(11.57 KB)
ðŸ“„ DispatcherAwareInterface.php(655 B)
ðŸ“„ DispatcherAwareTrait.php(1.1 KB)
ðŸ“„ DispatcherInterface.php(3.37 KB)
ðŸ“„ Event.php(2.61 KB)
ðŸ“„ EventImmutable.php(2 KB)
ðŸ“„ EventInterface.php(1.12 KB)
ðŸ“„ LazyServiceEventListener.php(3.07 KB)
ðŸ“„ ListenersPriorityQueue.php(3.22 KB)
ðŸ“„ Priority.php(1.52 KB)
ðŸ“„ SubscriberInterface.php(840 B)

Editing: ListenersPriorityQueue.php

<?php
/**
 * Part of the Joomla Framework Event Package
 *
 * @copyright  Copyright (C) 2005 - 2021 Open Source Matters, Inc. All rights reserved.
 * @license    GNU General Public License version 2 or later; see LICENSE
 */

namespace Joomla\Event;

/**
 * A class containing an inner listeners priority queue that can be iterated multiple times.
 *
 * @since  1.0
 * @internal
 */
final class ListenersPriorityQueue implements \IteratorAggregate, \Countable
{
	/**
	 * The listeners for an event.
	 *
	 * @var    array
	 * @since  2.0.0
	 */
	private $listeners = [];

/**
	 * Add a listener with the given priority only if not already present.
	 *
	 * @param   callable  $callback  A callable function acting as an event listener.
	 * @param   integer   $priority  The listener priority.
	 *
	 * @return  $this
	 *
	 * @since   1.0
	 */
	public function add(callable $callback, int $priority): self
	{
		$this->listeners[$priority][] = $callback;

return $this;
	}

/**
	 * Remove a listener from the queue.
	 *
	 * @param   callable  $callback  A callable function acting as an event listener.
	 *
	 * @return  $this
	 *
	 * @since   1.0
	 */
	public function remove(callable $callback): self
	{
		foreach ($this->listeners as $priority => $listeners)
		{
			if (($key = array_search($callback, $listeners, true)) !== false)
			{
				unset($this->listeners[$priority][$key]);
			}
		}

return $this;
	}

/**
	 * Tell if the listener exists in the queue.
	 *
	 * @param   callable  $callback  A callable function acting as an event listener.
	 *
	 * @return  boolean  True if it exists, false otherwise.
	 *
	 * @since   1.0
	 */
	public function has(callable $callback): bool
	{
		foreach ($this->listeners as $priority => $listeners)
		{
			if (($key = array_search($callback, $listeners, true)) !== false)
			{
				return true;
			}
		}

return false;
	}

/**
	 * Get the priority of the given listener.
	 *
	 * @param   callable  $callback  A callable function acting as an event listener.
	 * @param   mixed     $default   The default value to return if the listener doesn't exist.
	 *
	 * @return  mixed  The listener priority if it exists or the specified default value
	 *
	 * @since   1.0
	 */
	public function getPriority(callable $callback, $default = null)
	{
		foreach ($this->listeners as $priority => $listeners)
		{
			if (($key = array_search($callback, $listeners, true)) !== false)
			{
				return $priority;
			}
		}

return $default;
	}

/**
	 * Get all listeners contained in this queue, sorted according to their priority.
	 *
	 * @return  callable[]  An array of listeners.
	 *
	 * @since   1.0
	 */
	public function getAll(): array
	{
		if (empty($this->listeners))
		{
			return [];
		}

krsort($this->listeners);

return \call_user_func_array('array_merge', $this->listeners);
	}

/**
	 * Get the priority queue.
	 *
	 * @return  \ArrayIterator
	 *
	 * @since   1.0
	 */
	public function getIterator()
	{
		return new \ArrayIterator($this->getAll());
	}

/**
	 * Count the number of listeners in the queue.
	 *
	 * @return  integer  The number of listeners in the queue.
	 *
	 * @since   1.0
	 */
	public function count()
	{
		$count = 0;

foreach ($this->listeners as $priority)
		{
			$count += \count($priority);
		}

return $count;
	}
}

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