164 lines
4.5 KiB
PHP
164 lines
4.5 KiB
PHP
<?php
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if (!defined('_GNUBOARD_')) exit;
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Class GML_Hook extends Hook {
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protected $filters = array('count' => 0);
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protected $callback_filters = array();
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protected static $current_filter = false;
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protected function runAction($action, $args)
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{
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$function = $action['function'];
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$argsNumber = $action['arguments'];
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$class = (is_array($function) && isset($function[0])) ? $function[0] : false;
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$method = (is_array($function) && isset($function[1])) ? $function[1] : false;
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$args = $this->getArguments($argsNumber, $args);
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if (! ($class && $method) && function_exists($function)) {
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return call_user_func_array($function, $args);
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} elseif ($obj = call_user_func(array($class, $this->singleton))) {
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if ($obj !== false) {
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return call_user_func_array(array($obj, $method), $args);
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}
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} elseif (class_exists($class)) {
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$instance = new $class;
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return call_user_func_array(array($instance, $method), $args);
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}
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}
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protected function getFilters($tag, $remove)
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{
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if (isset($this->callback_filters[$tag])) {
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$filters = $this->callback_filters[$tag];
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if ($remove) {
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unset($this->callback_filters[$tag]);
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}
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}
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return (isset($filters)) ? $filters : array();
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}
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public static function get_properties($type, $is_callback=false){
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$that = self::getInstance(self::$id);
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if( $type === 'event' ){
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return $is_callback ? $that->callbacks : $that->actions;
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}
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return $is_callback ? $that->callback_filters : $that->filters;
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}
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public static function addFilter($tag, $func, $priority = 8, $args = 0)
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{
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$that = self::getInstance(self::$id);
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$that->callback_filters[$tag][$priority][] = array(
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'function' => $func,
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'arguments' => $args,
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);
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return true;
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}
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public static function apply_filters($tag, $args = array(), $remove = true)
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{
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$that = self::getInstance(self::$id);
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self::$current_filter = $tag;
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$that->filters['count']++;
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if (! array_key_exists($tag, $that->filters)) {
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$that->filters[$tag] = 0;
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}
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$that->filters[$tag]++;
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$filters = $that->getFilters($tag, $remove);
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ksort($filters);
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$value = $args[0];
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foreach ($filters as $priority) {
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foreach ($priority as $filter) {
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if( isset($args[0]) ){
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$args[0] = $value;
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}
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$replace = $that->runAction($filter, $args);
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if( ! is_null($replace) ) {
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$value = $replace;
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}
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}
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}
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self::$current_filter = false;
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return $value;
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}
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protected function getArguments($argsNumber, $arguments)
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{
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if ($argsNumber == 1 && is_string($arguments)) {
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return array($arguments);
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} elseif ($argsNumber === count($arguments)) {
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return $arguments;
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}
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$args = array();
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for ($i = 0; $i < $argsNumber; $i++) {
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if (is_array($arguments) && array_key_exists($i, $arguments)) {
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$args[] = $arguments[$i];
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}
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}
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return $args;
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}
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public static function remove_filter($tag, $func, $priority)
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{
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$that = self::getInstance(self::$id);
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$is_remove = false;
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if (isset($that->callback_filters[$tag]) && isset($that->callback_filters[$tag][$priority]) ) {
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foreach((array) $that->callback_filters[$tag][$priority] as $key=>$value){
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if(isset($value['function']) && $value['function'] === $func) {
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unset($that->callback_filters[$tag][$priority][$key]);
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$is_remove = true;
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}
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}
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}
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return $is_remove;
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}
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public static function remove_action($tag, $func, $priority)
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{
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$that = self::getInstance(self::$id);
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$is_remove = false;
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if (isset($that->callbacks[$tag]) && isset($that->callbacks[$tag][$priority]) ) {
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foreach((array) $that->callbacks[$tag][$priority] as $key=>$value){
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if(isset($value['function']) && $value['function'] === $func) {
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unset($that->callbacks[$tag][$priority][$key]);
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$is_remove = true;
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}
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}
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}
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return $is_remove;
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}
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}
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// end Hook Class;
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