<?php

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/**

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* Handles adding and dispatching events

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*

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* @package Requests

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* @subpackage Utilities

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*/

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/**

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* Handles adding and dispatching events

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*

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* @package Requests

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* @subpackage Utilities

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*/

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class Requests_Hooks implements Requests_Hooker {

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/**

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* Registered callbacks for each hook

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*

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* @var array

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*/

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protected $hooks = array();

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/**

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* Constructor

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*/

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public function __construct() {

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// pass

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}

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/**

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* Register a callback for a hook

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*

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* @param string $hook Hook name

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* @param callback $callback Function/method to call on event

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* @param int $priority Priority number. <0 is executed earlier, >0 is executed later

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*/

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public function register($hook, $callback, $priority = 0) {

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if (!isset($this->hooks[$hook])) {

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$this->hooks[$hook] = array();

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}

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if (!isset($this->hooks[$hook][$priority])) {

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$this->hooks[$hook][$priority] = array();

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}

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$this->hooks[$hook][$priority][] = $callback;

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}

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/**

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* Dispatch a message

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*

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* @param string $hook Hook name

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* @param array $parameters Parameters to pass to callbacks

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* @return boolean Successfulness

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*/

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public function dispatch($hook, $parameters = array()) {

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if (empty($this->hooks[$hook])) {

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return false;

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}

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foreach ($this->hooks[$hook] as $priority => $hooked) {

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foreach ($hooked as $callback) {

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call_user_func_array($callback, $parameters);

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}

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}

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return true;

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}

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public function __wakeup() {

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throw new \LogicException( __CLASS__ . ' should never be unserialized' );

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}

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}

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