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<?php
/**
* Handles adding and dispatching events
*
* @package Requests
* @subpackage Utilities
*/
/**
* Handles adding and dispatching events
*
* @package Requests
* @subpackage Utilities
*/
class Requests_Hooks implements Requests_Hooker {
/**
* Registered callbacks for each hook
*
* @var array
*/
protected $hooks = array();
/**
* Constructor
*/
public function __construct() {
// pass
}
/**
* Register a callback for a hook
*
* @param string $hook Hook name
* @param callback $callback Function/method to call on event
* @param int $priority Priority number. <0 is executed earlier, >0 is executed later
*/
public function register($hook, $callback, $priority = 0) {
if (!isset($this->hooks[$hook])) {
$this->hooks[$hook] = array();
}
if (!isset($this->hooks[$hook][$priority])) {
$this->hooks[$hook][$priority] = array();
}
$this->hooks[$hook][$priority][] = $callback;
}
/**
* Dispatch a message
*
* @param string $hook Hook name
* @param array $parameters Parameters to pass to callbacks
* @return boolean Successfulness
*/
public function dispatch($hook, $parameters = array()) {
if (empty($this->hooks[$hook])) {
return false;
}
foreach ($this->hooks[$hook] as $priority => $hooked) {
foreach ($hooked as $callback) {
call_user_func_array($callback, $parameters);
}
}
return true;
}
}