<?php

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/**

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* WPSEO plugin file.

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*

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* @package WPSEO\Admin

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*/

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/**

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* Represents the yoast columns.

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*/

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class WPSEO_Yoast_Columns implements WPSEO_WordPress_Integration {

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/**

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* Registers all hooks to WordPress.

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*

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* @return void

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*/

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public function register_hooks() {

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add_action( 'load-edit.php', [ $this, 'add_help_tab' ] );

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}

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/**

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* Adds the help tab to the help center for current screen.

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*

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* @return void

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*/

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public function add_help_tab() {

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$link_columns_present = $this->display_links();

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$meta_columns_present = $this->display_meta_columns();

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if ( ! ( $link_columns_present || $meta_columns_present ) ) {

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return;

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}

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$help_tab_content = sprintf(

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/* translators: %1$s: Yoast SEO */

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__( '%1$s adds several columns to this page.', 'wordpress-seo' ),

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'Yoast SEO'

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);

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if ( $meta_columns_present ) {

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$help_tab_content .= ' ' . sprintf(

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/* translators: %1$s: Link to article about content analysis, %2$s: Anchor closing */

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__( 'We\'ve written an article about %1$show to use the SEO score and Readability score%2$s.', 'wordpress-seo' ),

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'<a href="' . WPSEO_Shortlinker::get( 'https://yoa.st/16p' ) . '">',

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'</a>'

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);

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}

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if ( $link_columns_present ) {

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$help_tab_content .= ' ' . sprintf(

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/* translators: %1$s: Link to article about text links, %2$s: Anchor closing tag, %3$s: Emphasis open tag, %4$s: Emphasis close tag */

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__( 'The links columns show the number of articles on this site linking %3$sto%4$s this article and the number of URLs linked %3$sfrom%4$s this article. Learn more about %1$show to use these features to improve your internal linking%2$s, which greatly enhances your SEO.', 'wordpress-seo' ),

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'<a href="' . WPSEO_Shortlinker::get( 'https://yoa.st/16p' ) . '">',

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'</a>',

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'<em>',

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'</em>'

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);

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}

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$screen = get_current_screen();

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$screen->add_help_tab(

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[

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/* translators: %s expands to Yoast */

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'title' => sprintf( __( '%s Columns', 'wordpress-seo' ), 'Yoast' ),

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'id' => 'yst-columns',

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'content' => '<p>' . $help_tab_content . '</p>',

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'priority' => 15,

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]

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);

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}

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/**

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* Retrieves the post type from the $_GET variable.

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*

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* @return string The current post type.

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*/

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private 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 '';

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}

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/**

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* Whether we are showing link columns on this overview page.

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* This depends on the post being accessible or not.

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*

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* @return bool Whether the linking columns are shown

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*/

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private function display_links() {

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$current_post_type = $this->get_current_post_type();

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if ( empty( $current_post_type ) ) {

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return false;

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}

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return WPSEO_Post_Type::is_post_type_accessible( $current_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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*

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* @return bool Whether the meta box (and associated columns etc) should be hidden.

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*/

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private function display_meta_columns() {

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$current_post_type = $this->get_current_post_type();

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if ( empty( $current_post_type ) ) {

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return false;

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}

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

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}

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}

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