WP_Screen::get( string|WP_Screen $hook_name = '' ): WP_Screen

Source

public static function get( $hook_name = '' ) {	if ( $hook_name instanceof WP_Screen ) {	return $hook_name;	}	$id = '';	$post_type = null;	$taxonomy = null;	$in_admin = false;	$action = '';	$is_block_editor = false;	if ( $hook_name ) {	$id = $hook_name;	} elseif ( ! empty( $GLOBALS['hook_suffix'] ) ) {	$id = $GLOBALS['hook_suffix'];	}	// For those pesky meta boxes.	if ( $hook_name && post_type_exists( $hook_name ) ) {	$post_type = $id;	$id = 'post'; // Changes later. Ends up being $base.	} else {	if ( str_ends_with( $id, '.php' ) ) {	$id = substr( $id, 0, -4 );	}	if ( in_array( $id, array( 'post-new', 'link-add', 'media-new', 'user-new' ), true ) ) {	$id = substr( $id, 0, -4 );	$action = 'add';	}	}	if ( ! $post_type && $hook_name ) {	if ( str_ends_with( $id, '-network' ) ) {	$id = substr( $id, 0, -8 );	$in_admin = 'network';	} elseif ( str_ends_with( $id, '-user' ) ) {	$id = substr( $id, 0, -5 );	$in_admin = 'user';	}	$id = sanitize_key( $id );	if ( 'edit-comments' !== $id && 'edit-tags' !== $id && str_starts_with( $id, 'edit-' ) ) {	$maybe = substr( $id, 5 );	if ( taxonomy_exists( $maybe ) ) {	$id = 'edit-tags';	$taxonomy = $maybe;	} elseif ( post_type_exists( $maybe ) ) {	$id = 'edit';	$post_type = $maybe;	}	}	if ( ! $in_admin ) {	$in_admin = 'site';	}	} else {	if ( defined( 'WP_NETWORK_ADMIN' ) && WP_NETWORK_ADMIN ) {	$in_admin = 'network';	} elseif ( defined( 'WP_USER_ADMIN' ) && WP_USER_ADMIN ) {	$in_admin = 'user';	} else {	$in_admin = 'site';	}	}	if ( 'index' === $id ) {	$id = 'dashboard';	} elseif ( 'front' === $id ) {	$in_admin = false;	}	$base = $id;	// If this is the current screen, see if we can be more accurate for post types and taxonomies.	if ( ! $hook_name ) {	if ( isset( $_REQUEST['post_type'] ) ) {	$post_type = post_type_exists( $_REQUEST['post_type'] ) ? $_REQUEST['post_type'] : false;	}	if ( isset( $_REQUEST['taxonomy'] ) ) {	$taxonomy = taxonomy_exists( $_REQUEST['taxonomy'] ) ? $_REQUEST['taxonomy'] : false;	}	switch ( $base ) {	case 'post':	if ( isset( $_GET['post'] ) && isset( $_POST['post_ID'] ) && (int) $_GET['post'] !== (int) $_POST['post_ID'] ) {	wp_die( __( 'A post ID mismatch has been detected.' ), __( 'Sorry, you are not allowed to edit this item.' ), 400 );	} elseif ( isset( $_GET['post'] ) ) {	$post_id = (int) $_GET['post'];	} elseif ( isset( $_POST['post_ID'] ) ) {	$post_id = (int) $_POST['post_ID'];	} else {	$post_id = 0;	}	if ( $post_id ) {	$post = get_post( $post_id );	if ( $post ) {	$post_type = $post->post_type;	/** This filter is documented in wp-admin/post.php */	$replace_editor = apply_filters( 'replace_editor', false, $post );	if ( ! $replace_editor ) {	$is_block_editor = use_block_editor_for_post( $post );	}	}	}	break;	case 'edit-tags':	case 'term':	if ( null === $post_type && is_object_in_taxonomy( 'post', $taxonomy ? $taxonomy : 'post_tag' ) ) {	$post_type = 'post';	}	break;	case 'upload':	$post_type = 'attachment';	break;	}	}	switch ( $base ) {	case 'post':	if ( null === $post_type ) {	$post_type = 'post';	}	// When creating a new post, use the default block editor support value for the post type.	if ( empty( $post_id ) ) {	$is_block_editor = use_block_editor_for_post_type( $post_type );	}	$id = $post_type;	break;	case 'edit':	if ( null === $post_type ) {	$post_type = 'post';	}	$id .= '-' . $post_type;	break;	case 'edit-tags':	case 'term':	if ( null === $taxonomy ) {	$taxonomy = 'post_tag';	}	// The edit-tags ID does not contain the post type. Look for it in the request.	if ( null === $post_type ) {	$post_type = 'post';	if ( isset( $_REQUEST['post_type'] ) && post_type_exists( $_REQUEST['post_type'] ) ) {	$post_type = $_REQUEST['post_type'];	}	}	$id = 'edit-' . $taxonomy;	break;	}	if ( 'network' === $in_admin ) {	$id .= '-network';	$base .= '-network';	} elseif ( 'user' === $in_admin ) {	$id .= '-user';	$base .= '-user';	}	if ( isset( self::$_registry[ $id ] ) ) {	$screen = self::$_registry[ $id ];	if ( get_current_screen() === $screen ) {	return $screen;	}	} else {	$screen = new self();	$screen->id = $id;	}	$screen->base = $base;	$screen->action = $action;	$screen->post_type = (string) $post_type;	$screen->taxonomy = (string) $taxonomy;	$screen->is_user = ( 'user' === $in_admin );	$screen->is_network = ( 'network' === $in_admin );	$screen->in_admin = $in_admin;	$screen->is_block_editor = $is_block_editor;	self::$_registry[ $id ] = $screen;	return $screen; } 

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