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<?php |
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namespace Redbox\Hooks; |
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use Doctrine\Common\Annotations\AnnotationReader; |
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use Redbox\Hooks\Annotations\FilterAnnotationHandler; |
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class Filters |
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{ |
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/** |
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* @var array |
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*/ |
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static private $filters = []; |
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/** |
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* @var Annotations\FilterAnnotationHandler |
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*/ |
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static private $annotation_handler = null; |
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/** |
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* Initialize the Annotation Handler for |
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* dealing with filter objects. |
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*/ |
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public static function init() |
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{ |
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if (! self::$annotation_handler) { |
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$reader = new AnnotationReader(); |
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self::$annotation_handler = new FilterAnnotationHandler($reader); |
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} |
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} |
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/** |
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* @param $object |
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*/ |
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public static function registerFilterObject($object) |
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{ |
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self::init(); |
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self::$annotation_handler->read($object); |
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} |
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/** |
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* @param string $tag |
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* @param string $callback |
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* @param int $priority |
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* @return bool |
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*/ |
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public static function addFilter($tag = '', $callback = '', $priority = 10) |
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{ |
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if (empty($tag) || empty($callback)) { |
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return false; |
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} |
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if (isset(self::$filters[$tag]) === false) { |
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self::$filters[$tag] = new Hook($tag); |
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} |
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self::$filters[$tag]->addHook($priority, $callback); |
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return true; |
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} |
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/** |
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* @param string $tag |
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* @param string $callback |
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* @return bool |
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*/ |
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public static function removeFilter($tag = '', $callback = '') |
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{ |
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if (empty($tag) || empty($callback)) { |
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return false; |
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} |
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if (isset(self::$filters[$tag]) === true) { |
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$found = false; |
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$hooks = self::$filters[$tag]->getHooks(); |
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foreach ($hooks as $priority => $callbacks) { |
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foreach ($callbacks as $entry) { |
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if ($entry['callback'] == $callback) { |
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self::$filters[$tag]->removeCallbackWithPriority($priority, $callback); |
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$found = true; |
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} |
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} |
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} |
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return $found; |
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} |
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return false; |
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} |
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/** |
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* @param string $tag |
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* @return bool |
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*/ |
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public static function removeAllFilters($tag = '') |
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{ |
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if (empty($tag)) { |
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return false; |
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} |
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if (isset(self::$filters[$tag])) { |
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self::$filters[$tag]->removeAllHooks(); |
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unset(self::$filters[$tag]); |
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return true; |
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} |
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return false; |
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} |
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/** |
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* @param string $filter |
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* @param string $value |
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* @return string |
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*/ |
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public static function applyFilter($filter = '', $value = '') |
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{ |
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if (is_array($filter)) { |
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foreach ($filter as $single) { |
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$value = self::execute($single, $value); |
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} |
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} else { |
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$value = self::execute($filter, $value); |
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} |
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return $value; |
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} |
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/** |
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* @param $tag |
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* @param string $value |
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* @return string |
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*/ |
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private static function execute($tag, $value = '') |
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{ |
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if (isset(self::$filters[$tag]) === false) { |
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return $value; |
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} |
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$hooks = self::$filters[$tag]->getHooks(); |
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foreach ($hooks as $priority => $callbacks) { |
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do { |
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$entry = current($callbacks); |
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if (is_callable($entry['callback'])) { |
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$value = call_user_func($entry['callback'], $value); |
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} |
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} while (next($callbacks)); |
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} |
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return $value; |
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} |
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} |
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johnnymast /
redbox-hooks
