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Filename : module.php
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<?php
namespace ElementorPro\Modules\CustomAttributes;

use Elementor\Controls_Stack;
use Elementor\Controls_Manager;
use Elementor\Element_Base;
use Elementor\Utils;
use ElementorPro\Base\Module_Base;
use ElementorPro\License\API;
use ElementorPro\Modules\Tiers\Module as Tiers;
use ElementorPro\Plugin;

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

class Module extends Module_Base {

	const LICENSE_FEATURE_NAME = 'custom-attributes';

	public function __construct() {
		parent::__construct();

		$this->add_actions();
	}

	public function get_name() {
		return 'custom-attributes';
	}

	private function get_black_list_attributes() {
		static $black_list = null;

		if ( null === $black_list ) {
			$black_list = [ 'id', 'class', 'data-id', 'data-settings', 'data-element_type', 'data-widget_type', 'data-model-cid' ];

			/**
			 * Elementor attributes black list.
			 *
			 * Filters the attributes that won't be rendered in the wrapper element.
			 *
			 * By default Elementor doesn't render some attributes to prevent things
			 * from breaking down. This hook allows developers to alter this list of
			 * attributes.
			 *
			 * @since 2.2.0
			 *
			 * @param array $black_list A black list of attributes.
			 */
			$black_list = apply_filters( 'elementor_pro/element/attributes/black_list', $black_list );
		}

		return $black_list;
	}

	/**
	 * @param Element_Base $element
	 */
	public function replace_go_pro_custom_attributes_controls( Element_Base $element ) {
		$old_section = Plugin::elementor()->controls_manager->get_control_from_stack(
			$element->get_unique_name(),
			'section_custom_attributes_pro'
		);

		Plugin::elementor()->controls_manager->remove_control_from_stack( $element->get_unique_name(), [ 'section_custom_attributes_pro', 'custom_attributes_pro' ] );

		$this->register_custom_attributes_controls( $element, $old_section['tab'] );
	}

	public function register_custom_attributes_controls( Element_Base $element, $tab ) {
		$element_name = $element->get_name();

		$element->start_controls_section(
			'_section_attributes',
			[
				'label' => esc_html__( 'Attributes', 'elementor-pro' ),
				'tab' => $tab,
			]
		);

		$element->add_control(
			'_attributes',
			[
				'label' => esc_html__( 'Custom Attributes', 'elementor-pro' ),
				'type' => Controls_Manager::TEXTAREA,
				'dynamic' => [
					'active' => true,
				],
				'ai' => [
					'active' => false,
				],
				'placeholder' => esc_html__( 'key|value', 'elementor-pro' ),
				'description' => sprintf(
					/* translators: %s: The `|` separate char. */
					esc_html__( 'Set custom attributes for the wrapper element. Each attribute in a separate line. Separate attribute key from the value using %s character.', 'elementor-pro' ),
					'<code>|</code>'
				),
				'classes' => 'elementor-control-direction-ltr',
			]
		);

		$element->end_controls_section();
	}

	/**
	 * @param $element    Controls_Stack
	 * @param $section_id string
	 */
	public function register_controls( Controls_Stack $element, $section_id ) {
		if ( ! $element instanceof Element_Base ) {
			return;
		}

		// Remove Custom CSS Banner (From free version)
		if ( 'section_custom_attributes_pro' !== $section_id ) {
			return;
		}

		if ( ! API::is_licence_has_feature( self::LICENSE_FEATURE_NAME, API::BC_VALIDATION_CALLBACK ) ) {
			$this->replace_controls_with_upgrade_promotion( $element );
			return;
		}

		$this->replace_go_pro_custom_attributes_controls( $element );
	}

	/**
	 * @param $element Element_Base
	 */
	public function render_attributes( Element_Base $element ) {
		$settings = $element->get_settings_for_display();

		if ( ! empty( $settings['_attributes'] ) ) {
			$attributes = Utils::parse_custom_attributes( $settings['_attributes'], "\n" );

			$black_list = $this->get_black_list_attributes();

			foreach ( $attributes as $attribute => $value ) {
				if ( ! in_array( $attribute, $black_list, true ) ) {
					$element->add_render_attribute( '_wrapper', $attribute, $value );
				}
			}
		}
	}

	protected function add_actions() {
		add_action( 'elementor/element/after_section_end', [ $this, 'register_controls' ], 10, 2 );

		if ( API::is_licence_has_feature( static::LICENSE_FEATURE_NAME, API::BC_VALIDATION_CALLBACK ) ) {
			add_action( 'elementor/element/after_add_attributes', [ $this, 'render_attributes' ] );
		}
	}

	private function replace_controls_with_upgrade_promotion( Element_Base $element ) {
		$old_section = Plugin::elementor()->controls_manager->get_control_from_stack(
			$element->get_unique_name(),
			'section_custom_attributes_pro'
		);
		Plugin::elementor()->controls_manager->remove_control_from_stack( $element->get_unique_name(), [ 'section_custom_attributes_pro', 'section_custom_attributes_pro' ] );

		$element->start_controls_section(
			'section_custom_attributes_promotion',
			[
				'label' => esc_html__( 'Attributes', 'elementor-pro' ),
				'tab' => $old_section['tab'],
			]
		);

		$element->add_control(
			'custom_attributes_promotion',
			[
				'type' => Controls_Manager::RAW_HTML,
				'raw' => Tiers::get_promotion_template( [
					'title' => esc_html__( 'Meet Our Attributes', 'elementor-pro' ),
					'messages' => [
						esc_html__( 'Add custom HTML attributes to any element.', 'elementor-pro' ),
					],
					'link' => 'https://go.elementor.com/go-pro-advanced-attributes/',
				] ),
			]
		);

		$element->end_controls_section();
	}
}