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<?php
/**
* WPSEO plugin file.
*
* @package WPSEO\Admin\Links
*/
/**
* Represents the link watcher. This class will watch for the save_post hook being called.
*/
class WPSEO_Link_Watcher {
/**
* @var WPSEO_Link_Content_Processor
*/
protected $content_processor;
/**
* WPSEO_Link_Watcher constructor.
*
* @param WPSEO_Link_Content_Processor $content_processor The processor to use.
*/
public function __construct( WPSEO_Link_Content_Processor $content_processor ) {
$this->content_processor = $content_processor;
}
/**
* Registers the hooks.
*
* @returns void
*/
public function register_hooks() {
add_action( 'save_post', array( $this, 'save_post' ), 10, 2 );
add_action( 'delete_post', array( $this, 'delete_post' ) );
}
/**
* Saves the links that are used in the post.
*
* @param int $post_id The post id to.
* @param WP_Post $post The post object.
*
* @return void
*/
public function save_post( $post_id, WP_Post $post ) {
/**
* Filter: 'wpseo_should_index_links' - Allows disabling of Yoast's links indexation.
*
* @api bool To disable the indexation, return false.
*/
if ( ! apply_filters( 'wpseo_should_index_links', true ) ) {
return;
}
if ( ! WPSEO_Link_Table_Accessible::is_accessible() || ! WPSEO_Meta_Table_Accessible::is_accessible() ) {
return;
}
// When the post is a revision.
if ( wp_is_post_revision( $post->ID ) ) {
return;
}
$post_statuses_to_skip = array( 'auto-draft', 'trash' );
if ( in_array( $post->post_status, $post_statuses_to_skip, true ) ) {
return;
}
// When the post isn't processable, just remove the saved links.
if ( ! $this->is_processable( $post_id ) ) {
return;
}
$this->process( $post_id, $post->post_content );
}
/**
* Removes the seo links when the post is deleted.
*
* @param int $post_id The post id.
*
* @return void
*/
public function delete_post( $post_id ) {
/** This filter is documented in admin/links/class-link-watcher.php */
if ( ! apply_filters( 'wpseo_should_index_links', true ) ) {
return;
}
if ( ! WPSEO_Link_Table_Accessible::is_accessible() || ! WPSEO_Meta_Table_Accessible::is_accessible() ) {
return;
}
// Fetch links to update related linked objects.
$links = $this->content_processor->get_stored_internal_links( $post_id );
// Update the storage, remove all links for this post.
$storage = new WPSEO_Link_Storage();
$storage->cleanup( $post_id );
// Update link counts for object and referenced links.
$this->content_processor->update_link_counts( $post_id, 0, $links );
}
/**
* Checks if the post is processable.
*
* @param int $post_id The post id.
*
* @return bool True when the post is processable.
*/
protected function is_processable( $post_id ) {
/*
* Do not use the `wpseo_link_count_post_types` because we want to always count the links,
* even if we don't show them.
*/
$post_types = WPSEO_Post_Type::get_accessible_post_types();
return isset( $post_types[ get_post_type( $post_id ) ] );
}
/**
* Processes the content for the given post id.
*
* @param int $post_id The post id to process.
* @param string $content The content to process.
*
* @return void
*/
private function process( $post_id, $content ) {
// Apply the filters to have the same content as shown on the frontend.
$content = apply_filters( 'the_content', $content );
$content = str_replace( ']]>', ']]>', $content );
$this->content_processor->process( $post_id, $content );
}
}
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