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Editing: premium-orphaned-post-filter.php

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<?php
/**
 * WPSEO Premium plugin file.
 *
 * @package WPSEO\Premium
 */

use Yoast\WP\SEO\Config\Migration_Status;

/**
 * Registers the filter for filtering posts by orphaned content.
 */
class WPSEO_Premium_Orphaned_Post_Filter extends WPSEO_Abstract_Post_Filter {

/**
	 * Returns the query value this filter uses.
	 *
	 * @return string The query value this filter uses.
	 */
	public function get_query_val() {
		return 'orphaned';
	}

/**
	 * Registers the hooks when the link feature is enabled.
	 */
	public function register_hooks() {
		if ( ! YoastSEO()->classes->get( Migration_Status::class )->is_version( 'free', WPSEO_VERSION ) ) {
			return;
		}

if ( WPSEO_Premium_Orphaned_Content_Utils::is_feature_enabled() ) {
			parent::register_hooks();
		}
	}

/**
	 * Returns a text explaining this filter.
	 *
	 * @return string|null The explanation or null if the current post stype is unknown.
	 */
	protected function get_explanation() {
		$post_type_object = get_post_type_object( $this->get_current_post_type() );

if ( $post_type_object === null ) {
			return null;
		}

$unprocessed     = WPSEO_Premium_Orphaned_Content_Utils::has_unprocessed_content();
		$can_recalculate = WPSEO_Capability_Utils::current_user_can( 'wpseo_manage_options' );

$learn_more = sprintf(
			/* translators: %1$s expands to the link to an article to read more about orphaned content, %2$s expands to </a> */
			__( '%1$sLearn more about orphaned content%2$s.', 'wordpress-seo-premium' ),
			'<a href="' . WPSEO_Shortlinker::get( 'https://yoa.st/1ja' ) . '" target="_blank">',
			'</a>'
		);

if ( $unprocessed && ! $can_recalculate ) {
			return sprintf(
				/* translators: %1$s: plural form of the current post type, %2$s: a Learn more about link */
				__( 'Ask your SEO Manager or Site Administrator to count links in all texts, so we can identify orphaned %1$s. %2$s', 'wordpress-seo-premium' ),
				strtolower( $post_type_object->labels->name ),
				$learn_more
			);
		}

if ( $unprocessed ) {
			return sprintf(
				/* translators: %1$s expands to link to the recalculation option, %2$s: anchor closing, %3$s: plural form of the current post type, %4$s: a Learn more about link */
				__( '%1$sClick here%2$s to index your links, so we can identify orphaned %3$s. %4$s', 'wordpress-seo-premium' ),
				'<a href="' . esc_url( admin_url( 'admin.php?page=wpseo_tools&reIndexLinks=1' ) ) . '">',
				'</a>',
				strtolower( $post_type_object->labels->name ),
				$learn_more
			);
		}

return sprintf(
			/* translators: %1$s: plural form of the current post type, %2$s: a Learn more about link */
			__( '\'Orphaned content\' refers to %1$s that have no inbound links, consider adding links towards these %1$s. %2$s', 'wordpress-seo-premium' ),
			strtolower( $post_type_object->labels->name ),
			$learn_more
		);
	}

/**
	 * Modifies the query based on the seo_filter variable in $_GET.
	 *
	 * @param string $where Query variables.
	 *
	 * @return string The modified query.
	 */
	public function filter_posts( $where ) {
		if ( $this->is_filter_active() ) {
			$where .= $this->get_where_filter();
			$where .= $this->filter_published_posts();
		}

return $where;
	}

/**
	 * Returns the where clause to use.
	 *
	 * @return string The where clause.
	 */
	protected function get_where_filter() {
		global $wpdb;

if ( WPSEO_Premium_Orphaned_Content_Utils::has_unprocessed_content() ) {
			// Hide all posts, because we cannot tell anything for certain.
			return 'AND 1 = 0';
		}

$subquery = WPSEO_Premium_Orphaned_Post_Query::get_orphaned_content_query();
		return ' AND ' . $wpdb->posts . '.ID IN ( ' . $subquery . ' ) ';
	}

/**
	 * Adds a published posts filter so we don't show unpublished posts in the orphaned pages results.
	 *
	 * @return string A published posts filter.
	 */
	protected function filter_published_posts() {
		global $wpdb;

return " AND {$wpdb->posts}.post_status = 'publish' AND {$wpdb->posts}.post_password = ''";
	}

/**
	 * Returns the label for this filter.
	 *
	 * @return string The label for this filter.
	 */
	protected function get_label() {
		static $label;

if ( $label === null ) {
			$label = __( 'Orphaned content', 'wordpress-seo-premium' );
		}

return $label;
	}

/**
	 * Returns the total amount of articles that are orphaned content.
	 *
	 * @return int
	 */
	protected function get_post_total() {
		global $wpdb;

static $count;

if ( WPSEO_Premium_Orphaned_Content_Utils::has_unprocessed_content() ) {
			return '?';
		}

if ( $count === null ) {
			$subquery = WPSEO_Premium_Orphaned_Post_Query::get_orphaned_content_query();
			$count    = $wpdb->get_var(
				$wpdb->prepare(
					"SELECT COUNT(ID)
						FROM `{$wpdb->posts}`
						WHERE ID IN ( $subquery )
							AND post_status = 'publish'
							AND post_password = ''
							AND post_type = %s",
					$this->get_current_post_type()
				)
			);

$count = (int) $count;
		}

return $count;
	}

/**
	 * Returns the post types to which this filter should be added.
	 *
	 * @return array The post types to which this filter should be added.
	 */
	protected function get_post_types() {
		$orphaned_content_support = new WPSEO_Premium_Orphaned_Content_Support();

return $orphaned_content_support->get_supported_post_types();
	}
}

Editing: premium-orphaned-post-filter.php

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