}
	}

	private function maybe_render_blank_state( $which ) {
		$counts = (array) wp_count_posts( self::CPT );
		unset( $counts['auto-draft'] );

		if ( ! array_sum( $counts ) ) {
			/** @var Source_Local $source */
			$source = Plugin::elementor()->templates_manager->get_source( 'local' );

			$source->maybe_render_blank_state( $which, [
				'post_type' => self::DOCUMENT_TYPE,
				'cpt' => self::CPT,
				'description' => esc_html__( 'Add pixels, meta tags and any other scripts to your site.', 'elementor-pro' ) . sprintf( '<br><a target="_blank" href="https://go.elementor.com/wp-dash-custom-code">%s</a>', esc_html__( 'Learn more about adding custom code', 'elementor-pro' ) ),
				'href' => esc_url( admin_url( '/post-new.php?post_type=' . self::CPT ) ),
			] );
		}
	}

	private function manage_posts_columns( $columns ) {
		$new = [
			self::ADDITIONAL_COLUMN_INSTANCES => esc_html__( 'Instances', 'elementor-pro' ),
			Custom_Code_Metabox::FIELD_LOCATION => esc_html__( 'Location', 'elementor-pro' ),
			Custom_Code_Metabox::FIELD_PRIORITY => esc_html__( 'Priority', 'elementor-pro' ),
		];

		// Insert after 'author'.
		$keys = array_keys( $columns );
		$pos = array_search( 'author', $keys ) + 1;
		$columns = array_merge( array_slice( $columns, 0, $pos ), $new, array_slice( $columns, $pos ) );

		return $columns;
	}

	private function manage_posts_custom_column( $column_name, $post_id ) {
		if ( in_array( $column_name, Custom_Code_Metabox::INPUT_FIELDS ) ) {
			$value = get_post_meta( $post_id, '_elementor_' . $column_name, true );

			if ( Custom_Code_Metabox::FIELD_LOCATION === $column_name ) {
				$location_labels = $this->meta_box->get_location_labels();

				if ( isset( $location_labels[ $value ] ) ) {
					$value = $location_labels[ $value ];
				}
			}

			echo esc_html( $value );
		} elseif ( self::ADDITIONAL_COLUMN_INSTANCES === $column_name ) {
			/** @var Conditions_Manager $conditions_manager */
			$conditions_manager = Plugin::instance()->modules_manager->get_modules( 'theme-builder' )->get_conditions_manager();

			echo esc_html( implode( ', ', $conditions_manager->get_document_instances( $post_id ) ) );
		}
	}

	private function get_snippets_by_location( $location ) {
		return get_posts( [
			'numberposts' => -1,
			'post_type' => self::CPT,
			'meta_query' => [
				[
					'key' => '_elementor_' . Custom_Code_Metabox::FIELD_LOCATION,
					'value' => $location,
				],
			],
			// Order.
			'order' => 'ASC',
			'orderby' => 'meta_value_num',
			'meta_key' => '_elementor_' . Custom_Code_Metabox::FIELD_PRIORITY,
		] );
	}

	private function print_snippets( $location ) {
		// Do not print snippets on safe mode.
		if ( isset( $_REQUEST['elementor-mode'] ) && 'safe' === $_REQUEST['elementor-mode'] ) {
			return;
		}

		$snippets = $this->get_snippets_by_location( $location );

		/** @var \ElementorPro\Modules\ThemeBuilder\Module $theme_builder */
		$theme_builder = Plugin::instance()->modules_manager->get_modules( 'theme-builder' );
		$documents_by_conditions = $theme_builder->get_conditions_manager()->get_documents_for_location( $location );
		$location_manager = $theme_builder->get_locations_manager();

		foreach ( $snippets as $snippet ) {
			// Add snippet to location.
			// Also handling situation without conditions, bind current snippet id with current location.
			if ( isset( $documents_by_conditions[ $snippet->ID ] ) || ! get_post_meta( $snippet->ID, '_elementor_conditions', true ) ) {
				$location_manager->add_doc_to_location( $location, $snippet->ID );
			}
		}

		elementor_theme_do_location( $location );
	}

	private function register_rest_meta_fields() {
		$this->register_rest_meta_location();
		$this->register_rest_meta_priority();
		$this->register_rest_meta_code();
	}

	private function register_rest_meta_location() {
		$enum = [
			Custom_Code_Metabox::OPTION_LOCATION_HEAD,
			Custom_Code_Metabox::OPTION_LOCATION_BODY_START,
			Custom_Code_Metabox::OPTION_LOCATION_BODY_END,
		];
		register_meta( 'post', '_elementor_' . Custom_Code_Metabox::FIELD_LOCATION, [
			'object_subtype'   => self::CPT,
			'show_in_rest'     => [
				'schema' => [
					'type' => 'string',
					'enum' => $enum,
				],
			],
			'single'           => true,
			'type'             => 'string',
			'sanitize_callback' => 'sanitize_text_field',
			'auth_callback'    => function( $allowed, $meta_key, $object_id ) {
				$post = get_post( $object_id );
				if ( ! $post || self::CPT !== $post->post_type ) {
					return false;
				}
				return current_user_can( self::CAPABILITY );
			},
			'default' => Custom_Code_Metabox::DEFAULT_LOCATION,
		] );
	}

	private function register_rest_meta_priority() {
		register_meta( 'post', '_elementor_' . Custom_Code_Metabox::FIELD_PRIORITY, [
			'object_subtype'   => self::CPT,
			'show_in_rest'     => [
				'schema' => [ 'type' => 'integer' ],
			],
			'single'           => true,
			'type'             => 'integer',
			'sanitize_callback' => 'absint',
			'auth_callback'    => function( $allowed, $meta_key, $object_id ) {
				$post = get_post( $object_id );
				if ( ! $post || self::CPT !== $post->post_type ) {
					return false;
				}
				return current_user_can( self::CAPABILITY );
			},
			'default' => Custom_Code_Metabox::DEFAULT_PRIORITY,
		] );
	}

	private function register_rest_meta_code() {
		register_meta( 'post', '_elementor_' . Custom_Code_Metabox::FIELD_CODE, [
			'object_subtype'   => self::CPT,
			'show_in_rest'     => [
				'schema' => [ 'type' => 'string' ],
			],
			'single'           => true,
			'type'             => 'string',
			'auth_callback'    => function( $allowed, $meta_key, $object_id ) {
				$post = get_post( $object_id );
				if ( ! $post || self::CPT !== $post->post_type ) {
					return false;
				}
				return current_user_can( self::CAPABILITY );
			},
			'sanitize_callback' => function( $value ) {
				if ( ! current_user_can( 'unfiltered_html' ) ) {
					return wp_kses_post( $value );
				}
				return $value;
			},
		] );
	}

	private function register_import_export() {
		( new Custom_Code_Import_Export() )->register_hooks();
		( new Custom_Code_Import_Export_Customization() )->register_hooks();
	}
}