hooks(); } return self::$instance; } /** * Constructor Function * * @since 1.0 * @access private */ private function __construct() { self::$instance = $this; } /** * Reset the instance of the class * * @since 1.0 * @access public * @static */ public static function reset() { self::$instance = null; } /** * Setup the default hooks and actions * * @since 1.0 * * @return void */ private function hooks() { // activation add_action( 'admin_init', array( $this, 'activation' ) ); // text domain add_action( 'after_setup_theme', array( $this, 'load_textdomain' ) ); // free download text add_filter( 'edd_purchase_link_defaults', array( $this, 'free_download_text' ) ); // settings add_filter( 'edd_settings_misc', array( $this, 'settings' ) ); } /** * Activation function fires when the plugin is activated. * * This function is fired when the activation hook is called by WordPress, * it flushes the rewrite rules and disables the plugin if EDD isn't active * and throws an error. * * @since 1.0 * @access public * * @return void */ public function activation() { if ( ! class_exists( 'Easy_Digital_Downloads' ) ) { // is this plugin active? if ( is_plugin_active( plugin_basename( __FILE__ ) ) ) { // deactivate the plugin deactivate_plugins( plugin_basename( __FILE__ ) ); // unset activation notice unset( $_GET[ 'activate' ] ); // display notice add_action( 'admin_notices', array( $this, 'admin_notices' ) ); } } else { add_filter( 'plugin_action_links_' . plugin_basename( __FILE__ ), array( $this, 'settings_link' ), 10, 2 ); } } /** * Admin notices * * @since 1.0 */ public function admin_notices() { $edd_plugin_data = get_plugin_data( WP_PLUGIN_DIR . '/easy-digital-downloads/easy-digital-downloads.php', false, false ); if ( ! is_plugin_active('easy-digital-downloads/easy-digital-downloads.php') ) { echo '

' . sprintf( __( 'You must install %sEasy Digital Downloads%s to use %s.', 'edd-free-download-text' ), '', '', $this->title ) . '

'; } if ( $edd_plugin_data['Version'] < '1.9' ) { echo '

' . sprintf( __( '%s requires Easy Digital Downloads Version 1.9 or greater. Please update Easy Digital Downloads.', 'edd-free-download-text' ), $this->title ) . '

'; } } /** * Loads the plugin language files * * @access public * @since 1.0 * @return void */ public function load_textdomain() { // Set filter for plugin's languages directory $lang_dir = dirname( plugin_basename( plugin_dir_path( __FILE__ ) ) ) . '/languages/'; $lang_dir = apply_filters( 'edd_free_download_text_languages_directory', $lang_dir ); // Traditional WordPress plugin locale filter $locale = apply_filters( 'plugin_locale', get_locale(), 'edd-free-download-text' ); $mofile = sprintf( '%1$s-%2$s.mo', 'edd-free-download-text', $locale ); // Setup paths to current locale file $mofile_local = $lang_dir . $mofile; $mofile_global = WP_LANG_DIR . '/edd-free-download-text/' . $mofile; if ( file_exists( $mofile_global ) ) { // Look in global /wp-content/languages/edd-free-download-text folder load_textdomain( 'edd-free-download-text', $mofile_global ); } elseif ( file_exists( $mofile_local ) ) { // Look in local /wp-content/plugins/edd-free-download-text/languages/ folder load_textdomain( 'edd-free-download-text', $mofile_local ); } else { // Load the default language files load_plugin_textdomain( 'edd-free-download-text', false, $lang_dir ); } } /** * Easy Digital Downloads * Change the text of a download button when the download is free */ public function free_download_text( $defaults ) { // Enter the text that should appear on the button when the download it's free $free_download_text = edd_get_option( 'edd_fdt_text', __( 'Free Download', 'edd-free-download-text' ) ); $variable_pricing = edd_has_variable_prices( $defaults['download_id'] ); if ( $defaults['price'] && $defaults['price'] !== 'no' && ! $variable_pricing ) { $price = edd_get_download_price( $defaults['download_id'] ); if ( edd_is_free_download( $defaults['download_id'] ) ) { $defaults['text'] = $free_download_text; } } return $defaults; } /** * Settings */ public function settings( $settings ) { $settings['button_text']['free_download_text']['id'] = 'edd_fdt_text'; $settings['button_text']['free_download_text']['name'] = sprintf( __( 'Free %s Text', 'edd-free-download-text' ), edd_get_label_singular() ); $settings['button_text']['free_download_text']['desc'] = sprintf( __( 'Text that is shown for free %s.', 'edd-free-download-text' ), edd_get_label_plural( true ) ); $settings['button_text']['free_download_text']['type'] = 'text'; $settings['button_text']['free_download_text']['std'] = __( 'Free Download', 'edd-free-download-text' ); return $settings; } /** * Plugin settings link * * @since 1.0 */ public function settings_link( $links ) { $plugin_links = array( '' . __( 'Settings', 'edd-free-download-text' ) . '', ); return array_merge( $plugin_links, $links ); } } } /** * Loads a single instance of EDD Free Download Text * * This follows the PHP singleton design pattern. * * Use this function like you would a global variable, except without needing * to declare the global. * * @example * * @since 1.0 * * @see EDD_Free_Download_Text::get_instance() * * @return object Returns an instance of the EDD_Free_Download_Text class */ function edd_free_download_text() { return EDD_Free_Download_Text::get_instance(); } /** * Loads plugin after all the others have loaded and have registered their hooks and filters * * @since 1.0 */ add_action( 'plugins_loaded', 'edd_free_download_text', apply_filters( 'edd_free_download_text_action_priority', 10 ) );