<?php
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/

/**
* Event observer collection
*
* @author Magento Core Team <core@magentocommerce.com>
*/
namespace Magento\Framework\Event\Observer;

/**
* @api
* @since 100.0.2
*/
class Collection
{
/**
* Array of observers
*
* @var array
*/
protected $_observers;

/**
* Initializes observers
*/
public function __construct()
{
$this->_observers = [];
}

/**
* Returns all observers in the collection
*
* @return array
*/
public function getAllObservers()
{
return $this->_observers;
}

/**
* Returns observer by its name
*
* @param string $observerName
* @return \Magento\Framework\Event\Observer
*/
public function getObserverByName($observerName)
{
return $this->_observers[$observerName];
}

/**
* Adds an observer to the collection
*
* @param \Magento\Framework\Event\Observer $observer
* @return $this
*/
public function addObserver(\Magento\Framework\Event\Observer $observer)
{
$this->_observers[$observer->getName()] = $observer;
return $this;
}

/**
* Removes an observer from the collection by its name
*
* @param string $observerName
* @return $this
*/
public function removeObserverByName($observerName)
{
unset($this->_observers[$observerName]);
return $this;
}

/**
* Dispatches an event to all observers in the collection
*
* @param \Magento\Framework\Event $event
* @return $this
*/
public function dispatch(\Magento\Framework\Event $event)
{
foreach ($this->_observers as $observer) {
$observer->dispatch($event);
}
return $this;
}
}