seb86/Auto-Load-Next-Post

<?php
/**
 * Auto Load Next Post Settings Page
 *
 * @since    1.0.0
 * @version  1.6.0
 * @author   Sébastien Dumont
 * @category Admin
 * @package  Auto Load Next Post/Admin/Settings
 * @license  GPL-2.0+
 */

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

if ( ! class_exists( 'ALNP_Settings_Page' ) ) {

    abstract class ALNP_Settings_Page {

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

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

        /**
         * Constructor.
         *
         * @access  public
         * @since   1.4.10
         * @version 1.6.0
         */
        public function __construct() {
            add_filter( 'alnp_settings_tabs_array', array( $this, 'add_settings_page' ), 20 );
            add_action( 'auto_load_next_post_sections_' . $this->id, array( $this, 'output_sections' ) );
            add_action( 'auto_load_next_post_settings_' . $this->id, array( $this, 'need_help' ), 5 );
            add_action( 'auto_load_next_post_settings_' . $this->id, array( $this, 'output' ), 10 );
            add_action( 'auto_load_next_post_settings_save_' . $this->id, array( $this, 'save' ) );
        }

        /**
         * Get settings page ID.
         *
         * @access public
         * @since  1.4.10
         * @return string
         */
        public function get_id() {
            return $this->id;
        } // END get_id()

        /**
         * Get settings page label.
         *
         * @access public
         * @since  1.4.10
         * @return string
         */
        public function get_label() {
            return $this->label;
        } // END get_label()

        /**
         * Add this page to settings.
         *
         * @access public
         * @since  1.0.0
         * @param  array $pages
         * @return array $pages
         */
        public function add_settings_page( $pages ) {
            $pages[$this->id] = $this->label;

            return $pages;
        } // END add_settings_page()

        /**
         * Add this settings page to plugin menu.
         *
         * @access public
         * @since  1.0.0
         * @param  array $pages
         * @return array $pages
         */
        public function add_menu_page( $pages ) {
            $pages[$this->id] = $this->label;

            return $pages;
        } // END add_menu_page()

        /**
         * Get settings array
         *
         * @access public
         * @since  1.0.0
         * @return array
         */
        public function get_settings() {
            return array();
        } // END get_settings()

        /**
         * Get sections.
         *
         * @access public
         * @since  1.6.0
         * @return array
         */
        public function get_sections() {
            return array();
        } // END get_sections()

        /**
         * Output sections.
         *
         * @access public
         * @since  1.6.0
         * @global $current_section
         */
        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 ) {
                $url = add_query_arg( array(
                    'page'    => 'auto-load-next-post',
                    'view'    => $this->id,
                    'section' => sanitize_title( $id ),
                ), admin_url( 'options-general.php' ) );

                echo '<li><a href="' . $url . '" class="' . ( $current_section == $id ? 'current' : '' ) . '">' . $label . '</a> ' . ( end( $array_keys ) == $id ? '' : '|' ) . ' </li>';
            }

            echo '</ul><br class="clear" />';
        } // END output_sections()

        /**
         * Output the settings.
         *
         * @access public
         * @since  1.0.0
         */
        public function output() {
            $settings = $this->get_settings();

            ALNP_Admin_Settings::output_fields( $settings );
        } // END output()

        /**
         * Save settings.
         *
         * @access  public
         * @since   1.0.0
         * @version 1.6.0
         * @global  $current_section
         */
        public function save() {
            global $current_section;

            $settings = $this->get_settings();

            ALNP_Admin_Settings::save_fields( $settings );

            if ( $current_section ) {
                do_action( 'auto_load_next_post_update_options_' . $this->id . '_' . $current_section );
            }
        } // END save()

        /**
         * Displays a button above the settings header to toggle the help panel.
         * 
         * The help button does not show for theme selectors if the theme is already supported.
         * 
         * @access  public
         * @static
         * @since   1.5.5
         * @version 1.6.0
         * @global  $current_view
         */
        public function need_help() {
            global $current_view;

            // If theme is already supported then don't show help button for theme selectors.
            if ( is_alnp_supported() && $current_view == 'theme-selectors' ) {
                return;
            }

            echo '<a href="#" class="need-help trigger-help" data-tab="' . $current_view . '"><span class="sonar-dot"></span> ' . esc_html__( 'Need Help?', 'auto-load-next-post' ) . '</a>';
        } // END need_help()

    } // END class

} // END if class exists.