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<?php
/**
* @package OpenCart
* @author Daniel Kerr
* @copyright Copyright (c) 2005 - 2017, OpenCart, Ltd. (https://www.opencart.com/)
* @license https://opensource.org/licenses/GPL-3.0
* @link https://www.opencart.com
*/
/**
* Event class
*
* Event System
*
* https://github.com/opencart/opencart/wiki/Events-(script-notifications)-2.2.x.x
*/
namespace Opencart\System\Engine;
class Event {
protected $registry;
protected $data = [];
/**
* Constructor
*
* @param object $route
*/
public function __construct(\Opencart\System\Engine\Registry $registry) {
$this->registry = $registry;
}
/**
*
*
* @param string $trigger
* @param object $action
* @param int $priority
*/
public function register(string $trigger, \Opencart\System\Engine\Action $action, int $priority = 0): void {
$this->data[] = [
'trigger' => $trigger,
'action' => $action,
'priority' => $priority
];
$sort_order = [];
foreach ($this->data as $key => $value) {
$sort_order[$key] = $value['priority'];
}
array_multisort($sort_order, SORT_ASC, $this->data);
}
/**
*
*
* @param string $event
* @param array $args
*/
public function trigger(string $event, array $args = []): mixed {
foreach ($this->data as $value) {
if (preg_match('/^' . str_replace(['\*', '\?'], ['.*', '.'], preg_quote($value['trigger'], '/')) . '/', $event)) {
$result = $value['action']->execute($this->registry, $args);
if (!is_null($result) && !($result instanceof \Exception)) {
return $result;
}
}
}
return '';
}
/**
*
*
* @param string $trigger
* @param string $route
*/
public function unregister(string $trigger, string $route): void {
foreach ($this->data as $key => $value) {
if ($trigger == $value['trigger'] && $value['action']->getId() == $route) {
unset($this->data[$key]);
}
}
}
/**
*
*
* @param string $trigger
*/
public function clear(string $trigger): void {
foreach ($this->data as $key => $value) {
if ($trigger == $value['trigger']) {
unset($this->data[$key]);
}
}
}
}