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Edit File: class-wp-list-table-compat.php

<?php /** * Helper functions for displaying a list of items in an ajaxified HTML table. * * @package WordPress * @subpackage List_Table * @since 4.7.0 */ /** * Helper class to be used only by back compat functions. * * @since 3.1.0 */ class _WP_List_Table_Compat extends WP_List_Table { public $_screen; public $_columns; /** * Constructor. * * @since 3.1.0 * * @param string|WP_Screen $screen The screen hook name or screen object. * @param string[] $columns An array of columns with column IDs as the keys * and translated column names as the values. */ public function __construct( $screen, $columns = array() ) { if ( is_string( $screen ) ) { $screen = convert_to_screen( $screen ); } $this->_screen = $screen; if ( ! empty( $columns ) ) { $this->_columns = $columns; add_filter( 'manage_' . $screen->id . '_columns', array( $this, 'get_columns' ), 0 ); } } /** * Gets a list of all, hidden, and sortable columns. * * @since 3.1.0 * * @return array */ protected function get_column_info() { $columns = get_column_headers( $this->_screen ); $hidden = get_hidden_columns( $this->_screen ); $sortable = array(); $primary = $this->get_default_primary_column_name(); return array( $columns, $hidden, $sortable, $primary ); } /** * Gets a list of columns. * * @since 3.1.0 * * @return array */ public function get_columns() { return $this->_columns; } }