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<?php |
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/** |
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* Copyright (c) 2018 Justin Kuenzel (jukusoft.com) |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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/** |
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* Project: JuKuCMS |
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* License: Apache 2.0 license |
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* User: Justin |
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* Date: 04.03.2018 |
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* Time: 19:05 |
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*/ |
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class Events { |
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protected static $events = array(); |
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protected static $isInitialized = false; |
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public static function init () { |
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if (Cache::getCache()->contains("events", "events")) { |
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self::$events = Cache::getCache()->get("events", "events"); |
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} else { |
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//load events from database |
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$rows = Database::getInstance()->listRows("SELECT * FROM `{PRAEFIX}events` WHERE `activated` = '1'; "); |
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//iterate through rows |
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foreach ($rows as $row) { |
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//get name of event |
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$name = $row['name']; |
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//check, if name exists in array |
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if (!isset(self::$events[$name])) { |
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self::$events[$name] = array(); |
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} |
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//add row to array |
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self::$events[$name][] = $row; |
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} |
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//put events into cache |
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Cache::getCache()->put("events", "events", self::$events); |
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} |
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//set initialized flag to true |
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self::$isInitialized = true; |
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} |
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public static function throwEvent ($name, $params = array()) { |
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if (!is_array($params)) { |
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throw new IllegalArgumentException("second parameter params has to be an array."); |
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} |
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//check, if events was initialized first |
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if (!self::$isInitialized) { |
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//initialize events |
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self::init(); |
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} |
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if (isset(self::$events[$name])) { |
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foreach (self::$events as $event) { |
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self::executeEvent($event, $params); |
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} |
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} |
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} |
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protected static function executeEvent ($row, $params) { |
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$type = strtolower($row['type']); |
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$file = $row['file']; |
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$class_name = $row['class_name']; |
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$class_method = $row['class_method']; |
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switch ($type) { |
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case "file": |
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//check, if file exists |
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if (file_exists(ROOT_PATH . $file)) { |
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require(ROOT_PATH . $file); |
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} else { |
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throw new IllegalStateException("required file for event not found: " . $file); |
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} |
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break; |
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case "function": |
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call_user_func($class_method, $params); |
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break; |
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case "class_static_method": |
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call_user_func(array($class_name, $class_method), $params); |
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break; |
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default: |
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throw new IllegalStateException("unknown event type '" . $type . "' for event '" . $row['name'] . "'!"); |
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break; |
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} |
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} |
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public static function addEventClass (string $event, string $class_name, string $method, string $plugin_name) { |
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Database::getInstance()->execute("INSERT INTO `{praefix}events` ( |
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`id`, `name`, `type`, `file`, `class_name`, `class_method`, `created_from`, `activated` |
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) VALUES ( |
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NULL, :event, 'CLASS_STATIC_METHOD', '', :class_name, :method, :created_from, '1' |
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) ON DUPLICATE KEY UPDATE `activated` = '1';", array( |
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'event' => $event, |
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'class_name' => $class_name, |
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'method' => $method, |
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'created_from' => "plugin_" . $plugin_name |
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)); |
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} |
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public static function removePluginEvents (string $plugin_name) { |
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Database::getInstance()->execute("DELETE FROM `{praefix}events` WHERE `created_from` = :created_from; ", array( |
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'created_from' => "plugin_" . $plugin_name |
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)); |
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} |
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} |
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?> |
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JuKu /
JuKuCMS
Using a closing tag in PHP files that only contain PHP code is not recommended as you might accidentally add whitespace after the closing tag which would then be output by PHP. This can cause severe problems, for example headers cannot be sent anymore.
A simple precaution is to leave off the closing tag as it is not required, and it also has no negative effects whatsoever.