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<?php |
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/** |
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* Quantum PHP Framework |
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* |
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* An open source software development framework for PHP |
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* |
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* @package Quantum |
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* @author Arman Ag. <[email protected]> |
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* @copyright Copyright (c) 2018 Softberg LLC (https://softberg.org) |
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* @link http://quantum.softberg.org/ |
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* @since 2.9.7 |
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*/ |
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namespace Quantum\Hook; |
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use Quantum\Config\Exceptions\ConfigException; |
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use Quantum\Hook\Exceptions\HookException; |
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use Quantum\Di\Exceptions\DiException; |
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use Quantum\Loader\Setup; |
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use ReflectionException; |
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/** |
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* Class HookManager |
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* @package Quantum\Hooks |
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*/ |
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class HookManager |
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{ |
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/** |
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* Core hooks |
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*/ |
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const CORE_HOOKS = []; |
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/** |
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* Registered hooks store |
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* @var array |
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*/ |
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private static $store = []; |
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/** |
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* @var HookManager|null |
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*/ |
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private static $instance = null; |
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/** |
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* @throws HookException |
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* @throws ConfigException |
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* @throws DiException |
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* @throws ReflectionException |
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*/ |
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private function __construct() |
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{ |
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if (!config()->has('hooks')) { |
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config()->import(new Setup('config', 'hooks')); |
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} |
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$registeredHooks = array_merge(self::CORE_HOOKS, config()->get('hooks') ?: []); |
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foreach ($registeredHooks as $hookName) { |
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$this->register($hookName); |
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} |
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} |
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/** |
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* HookManager instance |
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* @return HookManager |
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*/ |
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public static function getInstance(): HookManager |
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{ |
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if (self::$instance == null) { |
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self::$instance = new self(); |
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} |
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return self::$instance; |
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} |
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/** |
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* Adds new listener for given hook |
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* @param string $name |
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* @param callable $function |
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* @throws HookException |
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*/ |
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public function on(string $name, callable $function) |
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{ |
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if (!$this->exists($name)) { |
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throw HookException::unregisteredHookName($name); |
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} |
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self::$store[$name][] = $function; |
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} |
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/** |
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* Fires the hook |
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* @param string $name |
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* @param array|null $args |
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* @throws HookException |
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*/ |
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public function fire(string $name, ?array $args = null) |
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{ |
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if (!$this->exists($name)) { |
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throw HookException::unregisteredHookName($name); |
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} |
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foreach (self::$store[$name] as $index => $fn) { |
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unset(self::$store[$name][$index]); |
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$fn($args); |
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} |
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} |
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/** |
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* Gets all registered hooks |
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* @return array |
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*/ |
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public static function getRegistered(): array |
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{ |
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return self::$store; |
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} |
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/** |
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* Registers new hook |
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* @param string $name |
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* @throws HookException |
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*/ |
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protected function register(string $name) |
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{ |
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if ($this->exists($name)) { |
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throw HookException::hookDuplicateName($name); |
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} |
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self::$store[$name] = []; |
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} |
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/** |
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* Checks if hooks registered |
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* @param string $name |
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* @return bool |
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*/ |
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protected function exists(string $name): bool |
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{ |
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return key_exists($name, self::$store); |
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} |
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} |
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