<?php if ( ! defined( 'ABSPATH' ) ) exit;
/**
* Class for performing actions incrementally. Internally used for converting submissions, exporting submissions, etc.
* Very useful when interacting with large amounts of data.
*
* @package Ninja Forms
* @subpackage Classes/Step Processing
* @copyright Copyright (c) 2014, WPNINJAS
* @license http://opensource.org/licenses/gpl-2.0.php GNU Public License
* @since 2.7.4
*/
abstract class NF_Step_Processing
{
/**
* @var action
*/
var $action = '';
/**
* @var step
*/
var $step = '';
/**
* @var total_steps
*/
var $total_steps = '';
/**
* @var redirect
*/
var $redirect = '';
/**
* @var array
*/
var $errors = array();
/**
* @var args
*/
var $args = array();
/**
* Get things rolling
*
* @since 2.7.4
* @return void
*/
function __construct() {
//Bail if we aren't in the admin.
if ( ! is_admin() )
return false;
if ( ! WPN_Helper::is_func_disabled( 'ignore_user_abort' ) ) {
ignore_user_abort( true );
}
// if ( ! nf_is_func_disabled( 'set_time_limit' ) && ! ini_get( 'safe_mode' ) ) {
// //set_time_limit( 0 );
// }
// Ajax call handled in 'processing' in this file
add_action( 'wp_ajax_nf_' . $this->action, array( $this, 'processing' ) );
}
/**
* Process our request.
* Call the appropriate loading or step functions.
*
* @since 2.7.6
* @return void
*/
public function processing() {
if(!$this->allowProcessing()){
return;
}
// Get our passed arguments. These come from the querysting of the processing page.
if ( isset ( $_REQUEST['args'] ) ) {
$this->args = WPN_Helper::sanitize_text_field($_REQUEST['args']);
if ( isset ( $this->args['redirect'] ) ) {
if( wp_validate_redirect( $this->args['redirect'] ) ){
$this->redirect = wp_sanitize_redirect( $this->args['redirect'] );
}
}
} else {
$this->args = array();
}
// Get our current step.
$this->step = isset ( $_REQUEST['step'] )? esc_html( $_REQUEST['step'] ) : 'loading';
// Get our total steps
$this->total_steps = isset ( $_REQUEST['total_steps'] )? esc_html( $_REQUEST['total_steps'] ) : 0;
// If our step is loading, then we need to return how many total steps there are along with the next step, which is 1.
if ( 'loading' == $this->step ) {
$return = $this->loading();
if ( ! isset ( $return['step'] ) ) {
$saved_step = get_user_option( 'nf_step_processing_' . $this->action . '_step' );
if ( ! empty ( $saved_step ) ) {
$this->step = $saved_step;
} else {
$this->step = 1;
}
$return['step'] = $this->step;
}
if ( ! isset ( $return['complete'] ) ) {
$return['complete'] = false;
}
} else { // We aren't on the loading step, so do our processing.
$return = $this->step();
if ( ! isset ( $return['step'] ) ) {
$this->step++;
$return['step'] = $this->step;
}
if ( ! isset ( $return['complete'] ) ) {
if ( $this->step > $this->total_steps ) {
$complete = true;
} else {
$complete = false;
}
$return['complete'] = $complete;
}
$return['total_steps'] = $this->total_steps;
}
$user_id = get_current_user_id();
if ( $return['complete'] ) {
// Delete our step option
delete_user_option( $user_id, 'nf_step_processing_' . $this->action . '_step' );
// Set our redirect variable.
$return['redirect'] = $this->redirect;
// Run our complete function
$this->complete();
} else {
// Save our current step so that we can resume if necessary
update_user_option( $user_id, 'nf_step_processing_' . $this->action . '_step', $this->step );
}
if ( isset ( $this->redirect ) && ! empty ( $this->redirect ) ) {
$this->args['redirect'] = $this->redirect;
}
$return['errors'] = ( $this->errors ) ? $this->errors : FALSE;
$return['args'] = $this->args;
echo json_encode( $return );
die();
}
/**
* Should processing continue?
*
* @return boolean
*/
abstract protected function allowProcessing( ): bool;
/**
* Run our loading process.
* This function should be overwritten in child classes.
*
* @since 2.7.4
* @return array $args
*/
public function loading() {
// This space left intentionally blank.
}
/**
* This function is called for every step.
* This function should be overwritten in child classes.
*
* @since 2.7.4
* @return array $args
*/
public function step() {
// This space left intentionally blank.
}
/**
* This function is called for every step.
* This function should be overwritten in child classes.
*
* @since 2.7.4
* @return array $args
*/
public function complete() {
// This space left intentionally blank.
}
}
في جولة حصرية داخل “الغرفة الزرقاء” بقناة BBC العربية، نكشف كواليس واحدة من أكثر غرف الأخبار تطورًا في العالم.
كيف الذكاء اصطناعي يتحكم بالبث دون تدخل بشري، لتقدم تجربة بصرية مذهلة.
الفيديو يستعرض كيف تمزج BBC بين التقنية والاحتراف لتصنع نشرات إخبارية من قلب المستقبل.