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<?php |
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/** |
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* Plugin Name: Auto Load Next Post |
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* Plugin URI: https://autoloadnextpost.com |
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* Description: Gain more post views on your site as readers continue reading your posts scrolling down the page. |
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* Version: 1.4.8 |
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* Author: Sébastien Dumont |
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* Author URI: https://sebastiendumont.com |
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* |
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* Text Domain: auto-load-next-post |
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* Domain Path: languages |
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* |
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* Auto Load Next Post is distributed under the terms of the |
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* GNU General Public License as published by the Free Software Foundation, |
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* either version 2 of the License, or any later version. |
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* |
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* Auto Load Next Post is distributed in the hope that it will |
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* be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with Auto Load Next Post. |
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* If not, see <http://www.gnu.org/licenses/>. |
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* |
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* @package Auto_Load_Next_Post |
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* @category Core |
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* @author Sébastien Dumont |
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*/ |
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if ( ! defined('ABSPATH')) { |
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exit; // Exit if accessed directly. |
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} |
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if ( ! class_exists('Auto_Load_Next_Post') ) { |
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/** |
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* Main Auto Load Next Post Class |
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* |
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* @class Auto_Load_Next_Post |
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* @version 1.4.8 |
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*/ |
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final class Auto_Load_Next_Post { |
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/** |
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* The single instance of the class |
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* |
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* @since 1.0.0 |
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* @access private |
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* @var Auto_Load_Next_Post |
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*/ |
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private static $_instance = null; |
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/** |
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* Main Auto Load Next Post Instance |
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* |
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* Ensures only one instance of Auto Load Next Post is loaded or can be loaded. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @static |
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* @see Auto_Load_Next_Post() |
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* @return Auto Load Next Post - Main instance. |
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*/ |
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public static function instance() { |
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if (is_null(self::$_instance)) { |
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self::$_instance = new Auto_Load_Next_Post; |
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self::$_instance->setup_constants(); |
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self::$_instance->load_plugin_textdomain(); |
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self::$_instance->includes(); |
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} |
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return self::$_instance; |
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} // END instance() |
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/** |
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* Throw error on object clone |
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* |
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* The whole idea of the singleton design pattern is that there is a single |
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* object therefore, we don't want the object to be cloned. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @return void |
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*/ |
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public function __clone() { |
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// Cloning instances of the class is forbidden |
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_doing_it_wrong(__FUNCTION__, __('Cheatin’ huh?', 'auto-load-next-post'), AUTO_LOAD_NEXT_POST_VERSION); |
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} // END __clone() |
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/** |
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* Disable unserializing of the class |
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* |
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* @since 1.0.0 |
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* @access public |
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* @return void |
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*/ |
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public function __wakeup() { |
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// Unserializing instances of the class is forbidden |
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_doing_it_wrong(__FUNCTION__, __('Cheatin’ huh?', 'auto-load-next-post'), AUTO_LOAD_NEXT_POST_VERSION); |
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} // END __wakeup() |
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/** |
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* Constructor |
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* |
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* @since 1.0.0 |
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* @access public |
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*/ |
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public function __construct() { |
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// Auto-load classes on demand |
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if (function_exists("__autoload")) { |
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spl_autoload_register("__autoload"); |
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} |
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spl_autoload_register(array($this, 'autoload')); |
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// Hooks |
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add_action('init', array($this, 'init_auto_load_next_post'), 0); |
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add_action('wp_enqueue_scripts', array($this, 'front_scripts_and_styles')); |
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} // END __construct() |
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/** |
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* Auto-load Auto Load Next Post classes on demand to reduce memory consumption. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @param mixed $class |
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* @return void |
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*/ |
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public function autoload($class) { |
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$path = null; |
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$file = strtolower('class-'.str_replace('_', '-', $class)).'.php'; |
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if (strpos($class, 'auto_load_next_post_admin') === 0) { |
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$path = AUTO_LOAD_NEXT_POST_FILE_PATH.'/includes/admin/'; |
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} else if (strpos($class, 'auto_load_next_post_') === 0) { |
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$path = AUTO_LOAD_NEXT_POST_FILE_PATH.'/includes/'; |
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} |
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if ($path !== null && is_readable($path.$file)) { |
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include_once($path.$file); |
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return true; |
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} |
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} // END autoload() |
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/** |
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* Setup Constants |
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* |
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* @since 1.4.3 |
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* @version 1.4.8 |
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* @access private |
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*/ |
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private function setup_constants() { |
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$this->define('AUTO_LOAD_NEXT_POST_VERSION', '1.4.8'); |
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$this->define('AUTO_LOAD_NEXT_POST_FILE', __FILE__); |
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$this->define('AUTO_LOAD_NEXT_POST_SLUG', 'auto-load-next-post'); |
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$this->define('AUTO_LOAD_NEXT_POST_URL_PATH', untrailingslashit(plugins_url('/', __FILE__))); |
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$this->define('AUTO_LOAD_NEXT_POST_FILE_PATH', untrailingslashit(plugin_dir_path(__FILE__))); |
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$this->define('AUTO_LOAD_NEXT_POST_TEMPLATE_PATH', 'auto-load-next-post/'); |
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$this->define('AUTO_LOAD_NEXT_POST_WP_VERSION_REQUIRE', '4.0'); |
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$suffix = defined('SCRIPT_DEBUG') && SCRIPT_DEBUG ? '' : '.min'; |
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$debug_suffix = defined('ALNP_DEV_DEBUG') && ALNP_DEV_DEBUG ? '.dev' : ''; |
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$this->define('AUTO_LOAD_NEXT_POST_SCRIPT_MODE', $suffix); |
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$this->define('AUTO_LOAD_NEXT_POST_DEBUG_MODE', $debug_suffix); |
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} // END setup_constants() |
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/** |
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* Define constant if not already set. |
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* |
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* @param string $name |
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* @param string|bool $value |
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* @access private |
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* @since 1.4.3 |
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*/ |
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private function define($name, $value) { |
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if ( ! defined($name)) { |
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define($name, $value); |
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} |
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} // END define() |
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/** |
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* Include required core files used in admin and on the frontend. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @return void |
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*/ |
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public function includes() { |
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include_once('includes/auto-load-next-post-core-functions.php'); // Contains core functions for the front/back end. |
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if (is_admin()) { |
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include_once('includes/admin/class-auto-load-next-post-admin.php'); // Admin section. |
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} |
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} // END includes() |
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/** |
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* Runs when the plugin is initialized. |
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* |
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* @since 1.0.0 |
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* @access public |
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*/ |
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public function init_auto_load_next_post() { |
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add_rewrite_endpoint('partial', EP_PERMALINK); |
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// Refresh permalinks |
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flush_rewrite_rules(); |
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} // END init_auto_load_next_post() |
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/** |
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* Load Localisation files. |
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* |
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* Note: the first-loaded translation file overrides any following ones if the same translation is present. |
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* |
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* Locales found in: |
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* - WP_LANG_DIR/auto-load-next-post/auto-load-next-post-LOCALE.mo |
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* - WP_LANG_DIR/plugins/auto-load-next-post-LOCALE.mo |
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* @since 1.0.0 |
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* @version 1.4.8 |
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*/ |
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public function load_plugin_textdomain() { |
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$locale = apply_filters( 'plugin_locale', get_locale(), 'auto-load-next-post' ); |
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load_textdomain( 'auto-load-next-post', WP_LANG_DIR . '/auto-load-next-post/auto-load-next-post-' . $locale . '.mo' ); |
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load_plugin_textdomain( 'auto-load-next-post', false, plugin_basename( dirname( __FILE__ ) ) . '/languages' ); |
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} // END load_plugin_textdomain() |
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/** |
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* Registers and enqueues stylesheets and javascripts for the front of the site. |
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* |
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* @since 1.3.2 |
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* @access public |
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*/ |
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public function front_scripts_and_styles() { |
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/** |
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* Load the Javascript if found as a singluar post. |
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*/ |
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if (supports_alnp() && is_singular() && get_post_type() == 'post') { |
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$this->load_file('auto-load-next-post-scrollspy', '/assets/js/libs/scrollspy'.AUTO_LOAD_NEXT_POST_SCRIPT_MODE.'.js', true, array('jquery'), AUTO_LOAD_NEXT_POST_VERSION); |
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$this->load_file('auto-load-next-post-history', '/assets/js/libs/jquery.history.js', true, array('jquery'), AUTO_LOAD_NEXT_POST_VERSION); |
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$this->load_file('auto-load-next-post-script', '/assets/js/frontend/auto-load-next-post'.AUTO_LOAD_NEXT_POST_DEBUG_MODE.AUTO_LOAD_NEXT_POST_SCRIPT_MODE.'.js', true, array('auto-load-next-post-scrollspy'), AUTO_LOAD_NEXT_POST_VERSION); |
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// Variables for JS scripts |
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wp_localize_script('auto-load-next-post-script', 'auto_load_next_post_params', array( |
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'alnp_content_container' => get_option('auto_load_next_post_content_container'), |
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'alnp_title_selector' => get_option('auto_load_next_post_title_selector'), |
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'alnp_navigation_container' => get_option('auto_load_next_post_navigation_container'), |
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'alnp_comments_container' => get_option('auto_load_next_post_comments_container'), |
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'alnp_remove_comments' => get_option('auto_load_next_post_remove_comments'), |
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'alnp_google_analytics' => get_option('auto_load_next_post_google_analytics'), |
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)); |
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} // END if is_singular() && get_post_type() |
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} // END front_scripts_and_styles() |
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/** |
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* Helper function for registering and enqueueing scripts and styles. |
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* |
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* @since 1.0.0 |
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* @access public |
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* @static |
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* @param string $name The ID to register with WordPress. |
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* @param string $file_path The path to the actual file. |
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* @param bool $is_script Optional, argument for if the incoming file_path is a JavaScript source file. |
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* @param array $support Optional, for requiring other javascripts for the source file you are calling. |
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* @param string $version Optional, can match the version of the plugin or version of the source file. |
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* @global string $wp_version |
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*/ |
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public static function load_file($name, $file_path, $is_script = false, $support = array(), $version = '') { |
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global $wp_version; |
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$url = AUTO_LOAD_NEXT_POST_URL_PATH.$file_path; // URL to the file. |
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if (file_exists(AUTO_LOAD_NEXT_POST_FILE_PATH.$file_path)) { |
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if ($is_script) { |
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wp_register_script($name, $url, $support, $version); |
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wp_enqueue_script($name); |
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} else { |
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wp_register_style($name, $url); |
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wp_enqueue_style($name); |
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} // end if |
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} // end if |
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} // END load_file() |
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} // END Auto_Load_Next_Post() |
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} // END class exists 'Auto_Load_Next_Post' |
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/** |
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* This runs the plugin if the required PHP version has been met. |
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*/ |
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function run_auto_load_next_post() { |
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return Auto_Load_Next_Post::instance(); |
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} // END run_auto_load_next_post() |
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// Fetch the Php version checker. |
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if ( ! class_exists('WP_Update_Php')) { |
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require_once('wp-update-php/wp-update-php.php'); |
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} |
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$updatePhp = new WP_Update_Php( |
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array( |
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'name' => 'Auto Load Next Post', |
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'textdomain' => 'auto-load-next-post' |
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), |
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array( |
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'minimum_version' => '5.3.0', |
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'recommended_version' => '5.4.7' |
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) |
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); |
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// If the miniumum version of PHP required is available then run the plugin. |
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if ($updatePhp->does_it_meet_required_php_version()) { |
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add_action('plugins_loaded', 'run_auto_load_next_post', 20); |
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} |
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You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.