99 lines
2.7 KiB
PHP
99 lines
2.7 KiB
PHP
<?php
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namespace Luracast\Restler;
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/**
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* Static event broadcasting system for Restler
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*
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* @category Framework
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* @package Restler
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* @author R.Arul Kumaran <arul@luracast.com>
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* @copyright 2010 Luracast
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link http://luracast.com/products/restler/
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*
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*/
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use Closure;
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class EventDispatcher
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{
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private $listeners = array();
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protected static $_waitList = array();
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public static $self;
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protected $events = array();
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public function __construct() {
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static::$self = $this;
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if (!empty(static::$_waitList)) {
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foreach (static::$_waitList as $param) {
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call_user_func_array(array($this,$param[0]), $param[1]);
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}
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}
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}
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public static function __callStatic($eventName, $params)
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{
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if (0 === strpos($eventName, 'on')) {
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if(static::$self){
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return call_user_func_array(array(static::$self, $eventName), $params);
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}
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static::$_waitList[] = func_get_args();
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return false;
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}
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}
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public function __call($eventName, $params)
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{
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if (0 === strpos($eventName, 'on')) {
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if (!isset($this->listeners[$eventName]) || !is_array($this->listeners[$eventName]))
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$this->listeners[$eventName] = array();
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$this->listeners[$eventName][] = $params[0];
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}
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return $this;
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}
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public static function addListener($eventName, Closure $callback)
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{
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return static::$eventName($callback);
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}
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public function on(array $eventHandlers)
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{
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for (
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$count = count($eventHandlers),
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$events = array_map(
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'ucfirst',
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$keys = array_keys(
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$eventHandlers = array_change_key_case(
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$eventHandlers,
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CASE_LOWER
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)
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)
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),
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$i = 0;
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$i < $count;
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call_user_func(
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array($this, "on{$events[$i]}"),
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$eventHandlers[$keys[$i++]]
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)
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);
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}
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/**
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* Fire an event to notify all listeners
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*
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* @param string $eventName name of the event
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* @param array $params event related data
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*/
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protected function dispatch($eventName, array $params = array())
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{
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$this->events[] = $eventName;
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$params = func_get_args();
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$eventName = 'on'.ucfirst(array_shift($params));
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if (isset($this->listeners[$eventName]))
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foreach ($this->listeners[$eventName] as $callback)
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call_user_func_array($callback, $params);
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}
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}
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