woothemes/woocommerce

<?php
/**
 * WooCommerce Settings Page/Tab
 *
 * @author      WooThemes
 * @category    Admin
 * @package     WooCommerce\Admin
 * @version     2.1.0
 */

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

if ( ! class_exists( 'WC_Settings_Page', false ) ) :

    /**
     * WC_Settings_Page.
     */
    abstract class WC_Settings_Page {

        /**
         * Setting page id.
         *
         * @var string
         */
        protected $id = '';

        /**
         * Setting page label.
         *
         * @var string
         */
        protected $label = '';

        /**
         * Constructor.
         */
        public function __construct() {
            add_filter( 'woocommerce_settings_tabs_array', array( $this, 'add_settings_page' ), 20 );
            add_action( 'woocommerce_sections_' . $this->id, array( $this, 'output_sections' ) );
            add_action( 'woocommerce_settings_' . $this->id, array( $this, 'output' ) );
            add_action( 'woocommerce_settings_save_' . $this->id, array( $this, 'save' ) );
        }

        /**
         * Get settings page ID.
         *
         * @since 3.0.0
         * @return string
         */
        public function get_id() {
            return $this->id;
        }

        /**
         * Get settings page label.
         *
         * @since 3.0.0
         * @return string
         */
        public function get_label() {
            return $this->label;
        }

        /**
         * Add this page to settings.
         *
         * @param array $pages
         *
         * @return mixed
         */
        public function add_settings_page( $pages ) {
            $pages[ $this->id ] = $this->label;

            return $pages;
        }

        /**
         * Get settings array.
         *
         * @return array
         */
        public function get_settings() {
            return apply_filters( 'woocommerce_get_settings_' . $this->id, array() );
        }

        /**
         * Get sections.
         *
         * @return array
         */
        public function get_sections() {
            return apply_filters( 'woocommerce_get_sections_' . $this->id, array() );
        }

        /**
         * Output sections.
         */
        public function output_sections() {
            global $current_section;

            $sections = $this->get_sections();

            if ( empty( $sections ) || 1 === sizeof( $sections ) ) {
                return;
            }

            echo '<ul class="subsubsub">';

            $array_keys = array_keys( $sections );

            foreach ( $sections as $id => $label ) {
                echo '<li><a href="' . admin_url( 'admin.php?page=wc-settings&tab=' . $this->id . '&section=' . sanitize_title( $id ) ) . '" class="' . ( $current_section == $id ? 'current' : '' ) . '">' . $label . '</a> ' . ( end( $array_keys ) == $id ? '' : '|' ) . ' </li>';
            }

            echo '</ul><br class="clear" />';
        }

        /**
         * Output the settings.
         */
        public function output() {
            $settings = $this->get_settings();

            WC_Admin_Settings::output_fields( $settings );
        }

        /**
         * Save settings.
         */
        public function save() {
            global $current_section;

            $settings = $this->get_settings();
            WC_Admin_Settings::save_fields( $settings );

            if ( $current_section ) {
                do_action( 'woocommerce_update_options_' . $this->id . '_' . $current_section );
            }
        }
    }

endif;