/wp-content/plugins/woocommerce/includes/admin/reports/class-wc-report-stock.php

<?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'  => __( 'Stock', 'woocommerce' ),
			'plural'    => __( 'Stock', 'woocommerce' ),
			'ajax'      => 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 ( $position != 'top' ) {
			parent::display_tablenav( $position );
		}
	}

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

		$this->prepare_items();
		echo '<div id="poststuff" class="woocommerce-reports-wide">';
		$this->display();
		echo '</div>';
	}

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

		if ( ! $product || $product->id !== $item->id ) {
			$product = wc_get_product( $item->id );
		}

		switch( $column_name ) {

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

				echo $product->get_title();

				// Get variation data
				if ( $product->is_type( 'variation' ) ) {
					$list_attributes = array();
					$attributes = $product->get_variation_attributes();

					foreach ( $attributes as $name => $attribute ) {
						$list_attributes[] = wc_attribute_label( str_replace( 'attribute_', '', $name ) ) . ': <strong>' . $attribute . '</strong>';
					}

					echo '<div class="description">' . implode( ', ', $list_attributes ) . '</div>';
				}
			break;

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

			case 'stock_status' :
				if ( $product->is_in_stock() ) {
					echo '<mark class="instock">' . __( 'In stock', 'woocommerce' ) . '</mark>';
				} else {
					echo '<mark class="outofstock">' . __( 'Out of stock', 'woocommerce' ) . '</mark>';
				}
			break;

			case 'stock_level' :
				echo $product->get_stock_quantity();
			break;

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

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

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

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

						foreach ( $actions as $action ) {
							printf( '<a class="button tips %s" href="%s" data-tip="%s ' . __( 'product', 'woocommerce' ) . '">%s</a>', $action['action'], esc_url( $action['url'] ), esc_attr( $action['name'] ), esc_attr( $action['name'] ) );
						}
					?>
				</p><?php
			break;
		}
	}

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

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

		return $columns;
	}

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

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

		$this->get_items( $current_page, $per_page );

		/**
		 * Pagination.
		 */
		$this->set_pagination_args( array(
			'total_items' => $this->max_items,
			'per_page'    => $per_page,
			'total_pages' => ceil( $this->max_items / $per_page )
		) );
	}
}