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* @param array $score_filters Array containing the score filters.

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* @return array Array containing the score filters that need to be applied to the meta query.

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protected function determine_score_filters( $score_filters ) {

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if ( count( $score_filters ) > 1 ) {

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return array_merge( [ 'relation' => 'AND' ], $score_filters );

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}

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return $score_filters;

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}

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/**

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* Retrieves the post type from the $_GET variable.

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* @return string|null The sanitized current post type or null when the variable is not set in $_GET.

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public function get_current_post_type() {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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if ( isset( $_GET['post_type'] ) && is_string( $_GET['post_type'] ) ) {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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return sanitize_text_field( wp_unslash( $_GET['post_type'] ) );

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}

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return null;

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}

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/**

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* Retrieves the SEO filter from the $_GET variable.

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* @return string|null The sanitized seo filter or null when the variable is not set in $_GET.

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public function get_current_seo_filter() {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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if ( isset( $_GET['seo_filter'] ) && is_string( $_GET['seo_filter'] ) ) {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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return sanitize_text_field( wp_unslash( $_GET['seo_filter'] ) );

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}

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return null;

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}

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/**

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* Retrieves the Readability filter from the $_GET variable.

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* @return string|null The sanitized readability filter or null when the variable is not set in $_GET.

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public function get_current_readability_filter() {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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if ( isset( $_GET['readability_filter'] ) && is_string( $_GET['readability_filter'] ) ) {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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return sanitize_text_field( wp_unslash( $_GET['readability_filter'] ) );

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}

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return null;

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}

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/**

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* Retrieves the keyword filter from the $_GET variable.

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* @return string|null The sanitized seo keyword filter or null when the variable is not set in $_GET.

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public function get_current_keyword_filter() {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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if ( isset( $_GET['seo_kw_filter'] ) && is_string( $_GET['seo_kw_filter'] ) ) {

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// phpcs:ignore WordPress.Security.NonceVerification.Recommended -- Reason: We are not processing form information.

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return sanitize_text_field( wp_unslash( $_GET['seo_kw_filter'] ) );

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}

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return null;

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}

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/**

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* Uses the vars to create a complete filter query that can later be executed to filter out posts.

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* @param array $vars Array containing the variables that will be used in the meta query.

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* @param array $filters Array containing the filters that we need to apply in the meta query.

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* @return array Array containing the complete filter query.

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protected function build_filter_query( $vars, $filters ) {

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// If no filters were applied, just return everything.

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if ( count( $filters ) === 0 ) {

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return $vars;

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}

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$result = [ 'meta_query' => [] ];

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$result['meta_query'] = array_merge( $result['meta_query'], [ $this->determine_score_filters( $filters ) ] );

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$current_seo_filter = $this->get_current_seo_filter();

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// This only applies for the SEO score filter because it can because the SEO score can be altered by the no-index option.

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if ( $this->is_valid_filter( $current_seo_filter ) && ! in_array( $current_seo_filter, [ WPSEO_Rank::NO_INDEX, WPSEO_Rank::NO_FOCUS ], true ) ) {

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$result['meta_query'] = array_merge( $result['meta_query'], [ $this->get_meta_robots_query_values() ] );

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}

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return array_merge( $vars, $result );

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}

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/**

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* Creates a Readability score filter.

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* @param number $low The lower boundary of the score.

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* @param number $high The higher boundary of the score.

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* @return array The Readability Score filter.

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protected function create_readability_score_filter( $low, $high ) {

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return [

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[

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'key' => WPSEO_Meta::$meta_prefix . 'content_score',

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'value' => [ $low, $high ],

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'type' => 'numeric',

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'compare' => 'BETWEEN',

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];

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}

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/**

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* Creates an SEO score filter.

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* @param number $low The lower boundary of the score.

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* @param number $high The higher boundary of the score.

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* @return array The SEO score filter.

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protected function create_seo_score_filter( $low, $high ) {

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return [

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[

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'key' => WPSEO_Meta::$meta_prefix . 'linkdex',

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'value' => [ $low, $high ],

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'type' => 'numeric',

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'compare' => 'BETWEEN',

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];

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}

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/**

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* Creates a filter to retrieve posts that were set to no-index.

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* @return array Array containin the no-index filter.

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protected function create_no_index_filter() {

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return [

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[

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'key' => WPSEO_Meta::$meta_prefix . 'meta-robots-noindex',

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'value' => '1',

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'compare' => '=',

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];

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}

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/**

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* Creates a filter to retrieve posts that have no keyword set.

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* @return array Array containing the no focus keyword filter.

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protected function create_no_focus_keyword_filter() {

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return [

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[

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'key' => WPSEO_Meta::$meta_prefix . 'meta-robots-noindex',

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'value' => 'needs-a-value-anyway',

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'compare' => 'NOT EXISTS',

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[

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'key' => WPSEO_Meta::$meta_prefix . 'linkdex',

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'value' => 'needs-a-value-anyway',

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'compare' => 'NOT EXISTS',

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];

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}

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/**

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* Determines whether a particular post_id is of an indexable post type.

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* @param string $post_id The post ID to check.

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* @return bool Whether or not it is indexable.

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protected function is_indexable( $post_id ) {

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if ( ! empty( $post_id ) && ! $this->uses_default_indexing( $post_id ) ) {

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return WPSEO_Meta::get_value( 'meta-robots-noindex', $post_id ) === '2';

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}

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$post = get_post( $post_id );

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if ( is_object( $post ) ) {

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// If the option is false, this means we want to index it.

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return WPSEO_Options::get( 'noindex-' . $post->post_type, false ) === false;

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}

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return true;

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}

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/**

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* Determines whether the given post ID uses the default indexing settings.

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* @param int $post_id The post ID to check.

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* @return bool Whether or not the default indexing is being used for the post.

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protected function uses_default_indexing( $post_id ) {

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return WPSEO_Meta::get_value( 'meta-robots-noindex', $post_id ) === '0';

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}

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/**

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* Returns filters when $order_by is matched in the if-statement.

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* @param string $order_by The ID of the column by which to order the posts.

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* @return array Array containing the order filters.

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private function filter_order_by( $order_by ) {

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switch ( $order_by ) {

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case 'wpseo-metadesc':

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return [

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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Reason: Only used when user requests sorting.

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'meta_key' => WPSEO_Meta::$meta_prefix . 'metadesc',

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'orderby' => 'meta_value',

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];

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case 'wpseo-focuskw':

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return [

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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Reason: Only used when user requests sorting.

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'meta_key' => WPSEO_Meta::$meta_prefix . 'focuskw',

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'orderby' => 'meta_value',

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];

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case 'wpseo-score':

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return [

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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Reason: Only used when user requests sorting.

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'meta_key' => WPSEO_Meta::$meta_prefix . 'linkdex',

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'orderby' => 'meta_value_num',

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];

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case 'wpseo-score-readability':

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return [

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// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_key -- Reason: Only used when user requests sorting.

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'meta_key' => WPSEO_Meta::$meta_prefix . 'content_score',

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'orderby' => 'meta_value_num',

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];

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}

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return [];

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}

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/**

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* Parses the score column.

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* @param int $post_id The ID of the post for which to show the score.

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* @return string The HTML for the SEO score indicator.

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private function parse_column_score( $post_id ) {

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$meta = $this->get_meta( $post_id );

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if ( $meta ) {

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return $this->score_icon_helper->for_seo( $meta->indexable, '', __( 'Post is set to noindex.', 'wordpress-seo' ) );

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}

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}

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/**

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* Parsing the readability score column.

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* @param int $post_id The ID of the post for which to show the readability score.

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* @return string The HTML for the readability score indicator.

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private function parse_column_score_readability( $post_id ) {

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$meta = $this->get_meta( $post_id );

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if ( $meta ) {

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return $this->score_icon_helper->for_readability( $meta->indexable->readability_score );

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}

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}

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/**

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* Sets up the hooks for the post_types.

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* @return void

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private function set_post_type_hooks() {

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$post_types = WPSEO_Post_Type::get_accessible_post_types();

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if ( ! is_array( $post_types ) || $post_types === [] ) {

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return;

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}

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foreach ( $post_types as $post_type ) {

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if ( $this->display_metabox( $post_type ) === false ) {

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continue;

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}

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add_filter( 'manage_' . $post_type . '_posts_columns', [ $this, 'column_heading' ], 10, 1 );

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add_action( 'manage_' . $post_type . '_posts_custom_column', [ $this, 'column_content' ], 10, 2 );

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add_action( 'manage_edit-' . $post_type . '_sortable_columns', [ $this, 'column_sort' ], 10, 2 );

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}

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unset( $post_type );

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}

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/**

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* Wraps the WPSEO_Metabox check to determine whether the metabox should be displayed either by

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* choice of the admin or because the post type is not a public post type.

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* @since 7.0

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* @param string|null $post_type Optional. The post type to test, defaults to the current post post_type.

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* @return bool Whether or not the meta box (and associated columns etc) should be hidden.

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private function display_metabox( $post_type = null ) {

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$current_post_type = $this->get_current_post_type();

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if ( ! isset( $post_type ) && ! empty( $current_post_type ) ) {

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$post_type = $current_post_type;

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}

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return WPSEO_Utils::is_metabox_active( $post_type, 'post_type' );

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}

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/**

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* Determines whether or not filter dropdowns should be displayed.

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* @return bool Whether or the current page can display the filter drop downs.

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public function can_display_filter() {

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if ( $GLOBALS['pagenow'] === 'upload.php' ) {

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return false;

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}

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if ( $this->display_metabox() === false ) {

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return false;

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}

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$screen = get_current_screen();

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if ( $screen === null ) {

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return false;

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}

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return WPSEO_Post_Type::is_post_type_accessible( $screen->post_type );

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}

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}

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