File admin/class-papi-admin.php

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<?php

/**
 * Admin class that handle loading of Papi types,
 * columns and loading of posts.
 */
final class Papi_Admin {

    /**
     * The entry type.
     *
     * @var Papi_Entry_Type
     */
    private $entry_type;

    /**
     * The post type.
     *
     * @var string
     */
    private $post_type;

    /**
     * The constructor.
     */
    public function __construct() {
        $this->load_files();
        $this->setup_globals();
        $this->setup_actions();
        $this->setup_filters();
    }

    /**
     * Cloning is forbidden.
     *
     * @codeCoverageIgnore
     */
    public function __clone() {
        _doing_it_wrong( __FUNCTION__, __( 'Cheatin&#8217; huh?', 'papi' ), '3.0' );
    }

    /**
     * Unserializing instances of this class is forbidden.
     *
     * @codeCoverageIgnore
     */
    public function __wakeup() {
        _doing_it_wrong( __FUNCTION__, __( 'Cheatin&#8217; huh?', 'papi' ), '3.0' );
    }

    /**
     * Preboot all types and setup the current type if any.
     */
    public function admin_init() {
        // Preload all page types.
        foreach ( papi_get_post_types() as $post_type ) {
            papi_get_all_entry_types( [
                'args' => $post_type
            ] );
        }

        if ( ! $this->setup_papi() ) {
            return;
        }

        // Setup entry type.
        $this->entry_type->setup();
    }

    /**
     * Add custom body class when it's a page type.
     *
     * @param  string $classes
     *
     * @return string
     */
    public function admin_body_class( $classes ) {
        $classes .= sprintf( ' papi-meta-type-%s', papi_get_meta_type() );

        if ( ! in_array( $this->post_type, papi_get_post_types() ) ) {
            return $classes;
        }

        if ( $entry_type = $this->get_entry_type() ) {
            $arr = $entry_type->get_body_classes();
            $arr = is_string( $arr ) ? [$arr] : $arr;
            $arr = is_array( $arr ) ? $arr : [];

            $classes .= ' ' . implode( ' ', $arr );
        }

        return $classes;
    }

    /**
     * Output Papi page type hidden field.
     *
     * This will only output on a post type page.
     */
    public function edit_form_after_title() {
        wp_nonce_field( 'papi_save_data', 'papi_meta_nonce' );

        if ( $value = esc_attr( papi_get_entry_type_id() ) ) {
            papi_render_html_tag( 'input', [
                'data-papi-page-type-key' => true,
                'name'                    => esc_attr( papi_get_page_type_key() ),
                'type'                    => 'hidden',
                'value'                   => $value
            ] );
        }
    }

    /**
     * Get Entry Type instance.
     *
     * @return Papi_Entry_Type|false
     */
    private function get_entry_type() {
        if ( $this->entry_type instanceof Papi_Entry_Type ) {
            return $this->entry_type;
        }

        $entry_type_id = papi_get_entry_type_id();

        // If the entry type id is empty try to load
        // the entry type id from `page` query string.
        //
        // Example:
        //   /wp-admin/options-general.php?page=papi/option/site-option-type
        if ( empty( $entry_type_id ) ) {
            $entry_type_id = preg_replace( '/^papi\/\w+\//', '', papi_get_qs( 'page' ) );
        }

        // Use the default entry type id if empty.
        if ( empty( $entry_type_id ) ) {
            $entry_type_id = papi_get_entry_type_id();
        }

        // If no entry type id exists Papi can't setup a entry type.
        if ( empty( $entry_type_id ) ) {
            return false;
        }

        return $this->entry_type = papi_get_entry_type_by_id( $entry_type_id );
    }

    /**
     * Output hidden meta boxes.
     */
    public function hidden_meta_boxes() {
        global $_wp_post_type_features;

        if ( ! isset( $_wp_post_type_features[$this->post_type]['editor'] ) ) {
            add_meta_box(
                'papi-hidden-editor',
                'Papi hidden editor',
                [$this, 'hidden_meta_box_editor'],
                $this->post_type
            );
        }
    }

    /**
     * Output hidden WordPress editor.
     */
    public function hidden_meta_box_editor() {
        wp_editor( '', 'papiHiddenEditor' );
    }

    /**
     * Load admin files that are not loaded by the autoload.
     */
    private function load_files() {
        require_once __DIR__ . '/class-papi-admin-ajax.php';
        require_once __DIR__ . '/class-papi-admin-meta-handler.php';
        require_once __DIR__ . '/class-papi-admin-option-handler.php';
        require_once __DIR__ . '/class-papi-admin-taxonomy.php';
        require_once __DIR__ . '/class-papi-admin-columns.php';
    }

    /**
     * Load post new action
     * Redirect to right url if no page type is set.
     */
    public function load_post_new() {
        $request_uri = $_SERVER['REQUEST_URI'];
        $post_types = papi_get_post_types();

        if ( in_array( $this->post_type, $post_types ) && strpos( $request_uri, 'page_type=' ) === false ) {
            $parsed_url = parse_url( $request_uri );

            $only_page_type = papi_filter_settings_only_page_type( $this->post_type );
            $page_types     = papi_get_all_page_types( $this->post_type );
            $show_standard  = false;

            if ( count( $page_types ) === 1 && empty( $only_page_type ) ) {
                $show_standard  = $page_types[0]->standard_type;
                $show_standard  = $show_standard ? papi_filter_settings_show_standard_page_type( $this->post_type ) : $show_standard;
                $only_page_type = $show_standard ? '' : $page_types[0]->get_id();
            }

            // Check if we should show one post type or not and
            // create the right url for that.
            if ( ! empty( $only_page_type ) && ! $show_standard ) {
                $url = papi_get_page_new_url( $only_page_type, false );
            } else {
                $page = 'page=papi-add-new-page,' . $this->post_type;

                if ( $this->post_type !== 'post' ) {
                    $page = '&' . $page;
                }

                $url = 'edit.php?' . $parsed_url['query'] . $page;
            }

            wp_safe_redirect( $url );
            is_admin() && exit;
        }
    }

    /**
     * Add docs links to plugin row meta.
     *
     * @param  array $links
     * @param  string $file
     *
     * @return array
     */
    public function plugin_row_meta( array $links, $file ) {
        if ( $file === PAPI_PLUGIN_BASENAME ) {
            return array_merge( $links, [
                'docs' => '<a href="' . esc_url( 'https://wp-papi.github.io/docs/' ) . '" title="' . esc_attr( __( 'View Papi Documentation', 'papi' ) ) . '">' . __( 'Docs', 'papi' ) . '</a>',
            ] );
        }

        return $links;
    }

    /**
     * Setup actions.
     */
    private function setup_actions() {
        if ( is_admin() ) {
            add_action( 'admin_init', [$this, 'admin_init'] );
            add_action( 'edit_form_after_title', [$this, 'edit_form_after_title'] );
            add_action( 'load-post-new.php', [$this, 'load_post_new'] );
            add_action( 'add_meta_boxes', [$this, 'hidden_meta_boxes'], 10 );

            if ( $taxonomy = papi_get_taxonomy() ) {
                add_action( $taxonomy . '_add_form', [$this, 'edit_form_after_title'] );
                add_action( $taxonomy . '_edit_form', [$this, 'edit_form_after_title'] );
            }
        }
    }

    /**
     * Setup filters.
     */
    private function setup_filters() {
        if ( is_admin() ) {
            add_filter( 'admin_body_class', [$this, 'admin_body_class'] );
            add_filter( 'plugin_row_meta', [$this, 'plugin_row_meta'], 10, 2 );
            add_filter( 'wp_link_query', [$this, 'wp_link_query'] );
            add_filter( 'wp_refresh_nonces', [$this, 'wp_refresh_nonces'], 11 );
        }
    }

    /**
     * Setup globals.
     */
    private function setup_globals() {
        $this->post_type = papi_get_post_type();
    }

    /**
     * Load right Papi file if it exists.
     *
     * @return bool
     */
    public function setup_papi() {
        // If the post type isn't in the post types array we can't proceed.
        if ( in_array( $this->post_type, ['revision', 'nav_menu_item'] ) ) {
            return false;
        }

        return $this->get_entry_type() instanceof Papi_Entry_Type;
    }

    /**
     * Filter the link query results.
     *
     * @param  array $results
     *
     * @return array
     */
    public function wp_link_query( array $results ) {
        $post_type = papi_get_post_type();

        foreach ( $results as $index => $value ) {
            $name = papi_get_page_type_name( $value['ID'] );

            if ( empty( $name ) ) {
                $name = papi_filter_settings_standard_page_type_name( $post_type );
            }

            $results[$index]['info'] = esc_html( $name );
        }

        return $results;
    }

    /**
     * Check nonce expiration on the New/Edit Post screen and refresh if needed.
     *
     * @param  array $response
     *
     * @return array
     */
    public function wp_refresh_nonces( array $response ) {
        if ( ! array_key_exists( 'wp-refresh-post-nonces', $response ) ) {
            return $response;
        }

        $response['wp-refresh-post-nonces']['replace']['papi_meta_nonce'] = wp_create_nonce( 'papi_save_data' );

        return $response;
    }
}

new Papi_Admin;

Classes

Functions