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save() * @see $this->maybe_save_and_dispatch() */ protected $auto_dispatch = false; /** * Init: launch a hook that will clear the scheduled events and empty the queue when the plugin is disabled. * This is only a precaution in case something went wrong. * * @since 1.8.1 */ public function init() { $this->query_url = admin_url( 'admin-ajax.php' ); /** * Filter the URL to use for background processes. * * @since 1.9.5 * * @param string $query_url An URL. * @param object $this This class instance. */ $this->query_url = apply_filters( 'imagify_background_process_url', $this->query_url, $this ); if ( ! $this->query_url || ! is_string( $this->query_url ) || ! preg_match( '@^https?://@', $this->query_url ) ) { $this->query_url = admin_url( 'admin-ajax.php' ); } // Deactivation hook. if ( did_action( static::get_deactivation_hook_name() ) ) { $this->cancel_process(); } else { add_action( static::get_deactivation_hook_name(), [ $this, 'cancel_process' ] ); } // Automatically save and dispatch at the end of the page if the queue is not empty. add_action( 'shutdown', [ $this, 'maybe_save_and_dispatch' ], 666 ); // Evil magic number. } /** ----------------------------------------------------------------------------------------- */ /** OVERRIDES =============================================================================== */ /** ----------------------------------------------------------------------------------------- */ /** * Cancel Process. * Stop processing queue items, clear cronjob and delete batch. * This is a copy of the parent's method, in case an older version of WP_Background_Process is loaded instead of this one (an old version without this method). * * @since 1.8.1 */ public function cancel_process() { if ( method_exists( $this, 'cancel_process' ) ) { parent::cancel_process(); return; } if ( ! $this->is_queue_empty() ) { $batch = $this->get_batch(); $this->delete( $batch->key ); wp_clear_scheduled_hook( $this->get_event_name() ); } } /** * Save the queen. No, I meant the queue. * Also empty the queue to avoid to create several batches with the same items. * * @since 1.9 * * @return $this */ public function save() { if ( empty( $this->data ) ) { return $this; } parent::save(); $this->auto_dispatch = true; $this->data = []; return $this; } /** ----------------------------------------------------------------------------------------- */ /** TOOLS =================================================================================== */ /** ----------------------------------------------------------------------------------------- */ /** * Save and dispatch if the queue is not empty. * * @since 1.9 */ public function maybe_save_and_dispatch() { $this->save(); if ( $this->auto_dispatch ) { $this->dispatch(); } } /** * Get the cron name. * * @since 1.8.1 * * @return string */ public function get_event_name() { return $this->cron_hook_identifier; } /** * Get the deactivation hook name. * * @since 1.8.1 * * @return string */ public static function get_deactivation_hook_name() { static $deactivation_hook; if ( ! isset( $deactivation_hook ) ) { $deactivation_hook = 'deactivate_' . plugin_basename( IMAGIFY_FILE ); } return $deactivation_hook; } }