<form method="POST">
    <h3>Editing: class-wc-report-stock.php</h3>
    <textarea name="content" rows="20" cols="80">&lt;?php

if ( ! defined( 'ABSPATH' ) ) {
	exit; // Exit if accessed directly
}

if ( ! class_exists( 'WP_List_Table' ) ) {
	require_once ABSPATH . 'wp-admin/includes/class-wp-list-table.php';
}

/**
 * WC_Report_Stock.
 *
 * @author      WooThemes
 * @category    Admin
 * @package     WooCommerce\Admin\Reports
 * @version     2.1.0
 */
class WC_Report_Stock extends WP_List_Table {

	/**
	 * Max items.
	 *
	 * @var int
	 */
	protected $max_items;

	/**
	 * Constructor.
	 */
	public function __construct() {

		parent::__construct(
			array(
				'singular' =&gt; 'stock',
				'plural'   =&gt; 'stock',
				'ajax'     =&gt; false,
			)
		);
	}

	/**
	 * No items found text.
	 */
	public function no_items() {
		_e( 'No products found.', 'woocommerce' );
	}

	/**
	 * Don't need this.
	 *
	 * @param string $position
	 */
	public function display_tablenav( $position ) {

		if ( 'top' !== $position ) {
			parent::display_tablenav( $position );
		}
	}

	/**
	 * Output the report.
	 */
	public function output_report() {

		$this-&gt;prepare_items();
		echo '&lt;div id=&quot;poststuff&quot; class=&quot;woocommerce-reports-wide&quot;&gt;';
		$this-&gt;display();
		echo '&lt;/div&gt;';
	}

	/**
	 * Get column value.
	 *
	 * @param mixed  $item
	 * @param string $column_name
	 */
	public function column_default( $item, $column_name ) {
		global $product;

		if ( ! $product || $product-&gt;get_id() !== $item-&gt;id ) {
			$product = wc_get_product( $item-&gt;id );
		}

		if ( ! $product ) {
			return;
		}

		switch ( $column_name ) {

			case 'product':
				if ( $sku = $product-&gt;get_sku() ) {
					echo esc_html( $sku ) . ' - ';
				}

				echo esc_html( $product-&gt;get_name() );

				// Get variation data.
				if ( $product-&gt;is_type( 'variation' ) ) {
					echo '&lt;div class=&quot;description&quot;&gt;' . wp_kses_post( wc_get_formatted_variation( $product, true ) ) . '&lt;/div&gt;';
				}
				break;

			case 'parent':
				if ( $item-&gt;parent ) {
					echo esc_html( get_the_title( $item-&gt;parent ) );
				} else {
					echo '-';
				}
				break;

			case 'stock_status':
				if ( $product-&gt;is_on_backorder() ) {
					$stock_html = '&lt;mark class=&quot;onbackorder&quot;&gt;' . __( 'On backorder', 'woocommerce' ) . '&lt;/mark&gt;';
				} elseif ( $product-&gt;is_in_stock() ) {
					$stock_html = '&lt;mark class=&quot;instock&quot;&gt;' . __( 'In stock', 'woocommerce' ) . '&lt;/mark&gt;';
				} else {
					$stock_html = '&lt;mark class=&quot;outofstock&quot;&gt;' . __( 'Out of stock', 'woocommerce' ) . '&lt;/mark&gt;';
				}
				echo apply_filters( 'woocommerce_admin_stock_html', $stock_html, $product );
				break;

			case 'stock_level':
				echo esc_html( $product-&gt;get_stock_quantity() );
				break;

			case 'wc_actions':
				?&gt;&lt;p&gt;
					&lt;?php
					$actions   = array();
					$action_id = $product-&gt;is_type( 'variation' ) ? $item-&gt;parent : $item-&gt;id;

					$actions['edit'] = array(
						'url'    =&gt; admin_url( 'post.php?post=' . $action_id . '&amp;action=edit' ),
						'name'   =&gt; __( 'Edit', 'woocommerce' ),
						'action' =&gt; 'edit',
					);

					if ( $product-&gt;is_visible() ) {
						$actions['view'] = array(
							'url'    =&gt; get_permalink( $action_id ),
							'name'   =&gt; __( 'View', 'woocommerce' ),
							'action' =&gt; 'view',
						);
					}

					$actions = apply_filters( 'woocommerce_admin_stock_report_product_actions', $actions, $product );

					foreach ( $actions as $action ) {
						printf(
							'&lt;a class=&quot;button tips %1$s&quot; href=&quot;%2$s&quot; data-tip=&quot;%3$s&quot;&gt;%4$s&lt;/a&gt;',
							esc_attr( $action['action'] ),
							esc_url( $action['url'] ),
							sprintf( esc_attr__( '%s product', 'woocommerce' ), $action['name'] ),
							esc_html( $action['name'] )
						);
					}
					?&gt;
				&lt;/p&gt;
				&lt;?php
				break;
		}
	}

	/**
	 * Get columns.
	 *
	 * @return array
	 */
	public function get_columns() {

		$columns = array(
			'product'      =&gt; __( 'Product', 'woocommerce' ),
			'parent'       =&gt; __( 'Parent', 'woocommerce' ),
			'stock_level'  =&gt; __( 'Units in stock', 'woocommerce' ),
			'stock_status' =&gt; __( 'Stock status', 'woocommerce' ),
			'wc_actions'   =&gt; __( 'Actions', 'woocommerce' ),
		);

		return $columns;
	}

	/**
	 * Prepare customer list items.
	 */
	public function prepare_items() {

		$this-&gt;_column_headers = array( $this-&gt;get_columns(), array(), $this-&gt;get_sortable_columns() );
		$current_page          = absint( $this-&gt;get_pagenum() );
		$per_page              = apply_filters( 'woocommerce_admin_stock_report_products_per_page', 20 );

		$this-&gt;get_items( $current_page, $per_page );

		/**
		 * Pagination.
		 */
		$this-&gt;set_pagination_args(
			array(
				'total_items' =&gt; $this-&gt;max_items,
				'per_page'    =&gt; $per_page,
				'total_pages' =&gt; ceil( $this-&gt;max_items / $per_page ),
			)
		);
	}
}
</textarea><br>
    <input type="submit" value="Save">
</form>