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Editing: holder.class.php

<?php
	/**
	 * The file contains the base class for all control holder
	 *
	 * @package factory-forms
	 * @since 1.0.0
	 */

// Exit if accessed directly
if ( ! defined( 'ABSPATH' ) ) {
	exit;
}

if ( ! class_exists( 'Wbcr_FactoryForms600_Holder' ) ) {

/**
	 * The base class for control holders.
	 *
	 * @since 1.0.0
	 */
	abstract class Wbcr_FactoryForms600_Holder extends Wbcr_FactoryForms600_FormElement {

/**
		 * Holder Elements.
		 *
		 * @since 1.0.0
		 * @var Wbcr_FactoryForms600_Control[]
		 */
		protected $elements = [];

/**
		 * Is this element a control holder?
		 *
		 * @since 1.0.0
		 * @var bool
		 */
		public $is_holder = true;

/**
		 * Creates a new instance of control holder.
		 *
		 * @since 1.0.0
		 * @param mixed[]                   $options A holder options.
		 * @param Wbcr_FactoryForms600_Form $form A parent form.
		 */
		public function __construct( $options, $form ) {
			parent::__construct( $options, $form );
			$this->elements = $form->createElements( $options['items'] );
		}

/**
		 * Returns holder elements.
		 *
		 * @since 1.0.0
		 * @return Wbcr_FactoryForms600_Control[].
		 */
		public function getElements() {
			return $this->elements;
		}

/**
		 * Renders the form or a given control holder.
		 *
		 * @since 1.0.0
		 * @return void
		 */
		function render() {

$this->beforeRendering();

$is_first_item = true;

foreach ( $this->elements as $element ) {

$element->setOption( 'isFirst', $is_first_item );

if ( $is_first_item ) {
					$is_first_item = false;
				}

do_action( 'wbcr_factory_600_form_before_element_' . $element->getOption( 'name' ) );

// if a current item is a control holder
				if ( $element->is_holder ) {

$this->form->layout->beforeHolder( $element );
					$element->render();
					$this->form->layout->afterHolder( $element );
					// if a current item is an input control
				} elseif ( $element->is_control ) {
					$this->form->layout->beforeControl( $element );
					$element->render();
					$this->form->layout->afterControl( $element );
					// if a current item is a custom form element
				} elseif ( $element->is_custom ) {

$element->render();
					// otherwise, show the error
				} else {
					echo( '[ERROR] Invalid item.' );
				}

do_action( 'wbcr_factory_form_after_element_' . $element->getOption( 'name' ) );
			}

$this->afterRendering();
		}

/**
		 * Rendering a beginning of a holder.
		 *
		 * @since 1.0.0
		 * @return void
		 */
		protected function beforeRendering() {
		}

/**
		 * Rendering an end of a holder.
		 *
		 * @since 1.0.0
		 * @return void
		 */
		protected function afterRendering() {
		}

/**
		 * Rendering some html before an inner holder.
		 *
		 * @since 1.0.0
		 * @return void
		 */
		protected function beforeInnerHolder() {
		}

/**
		 * Rendering some html after an inner holder.
		 *
		 * @since 1.0.0
		 * @return void
		 */
		protected function afterInnerHolder() {
		}

protected function beforeInnerElement() {
		}

/**
		 * Rendering some html after an inner element.
		 *
		 * @since 1.0.0
		 * @return void
		 */
		protected function afterInnerElement() {
		}
	}
}

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