File admin/class-papi-admin-meta-box.php

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<?php

/**
 * Admin class that handles admin meta boxes.
 */
final class Papi_Admin_Meta_Box {

    /**
     * The core box.
     *
     * @var Papi_Core_Box
     */
    private $box;

    /**
     * The constructor.
     *
     * @param Papi_Core_Box $box
     */
    public function __construct( Papi_Core_Box $box ) {
        // Check if the current user is allowed to view this box.
        if ( ! papi_current_user_is_allowed( $box->capabilities ) ) {
            return;
        }

        if ( $box->display ) {
            $this->box = $box;
            $this->setup_actions();
        }
    }

    /**
     * Add css classes to meta box.
     *
     * @param  array $classes
     *
     * @return string[]
     */
    public function meta_box_css_classes( array $classes ) {
        return array_merge( $classes, [
            'papi-box'
        ] );
    }

    /**
     * Move meta boxes after title.
     */
    public function move_meta_box_after_title() {
        global $post, $wp_meta_boxes;
        do_meta_boxes( get_current_screen(), $this->box->context, $post );
        unset( $wp_meta_boxes[get_post_type( $post )][$this->box->context] );
    }

    /**
     * Get meta post type.
     *
     * @return string
     */
    private function get_post_type() {
        if ( papi_get_meta_type() === 'post' ) {
            if ( $post_id = papi_get_post_id() ) {
                return get_post_type( $post_id );
            }

            if ( $post_type = papi_get_post_type() ) {
                return $post_type;
            }
        }

        return $this->box->id;
    }

    /**
     * Get meta box title.
     *
     * @return string
     */
    private function get_title() {
        $title = $this->box->title;

        if ( $this->box->get_option( 'required' ) ) {
            $title .= papi_required_html(
                $this->box->properties[0],
                true
            );
        }

        return $title;
    }

    /**
     * Render the meta box
     *
     * @param array $post
     * @param array $args
     */
    public function render_meta_box( $post, array $args ) {
        if ( ! isset( $args['args'] ) ) {
            return;
        }

        // Do a last check before all properties is rendered.
        $args['args'] = array_filter( $args['args'], 'papi_is_property' );

        // Inherit options from the box.
        foreach ( $args['args'] as $index => $property ) {
            if ( $property->layout === 'horizontal' ) {
                $args['args'][$index]->layout = $this->box->layout;
            }
        }

        // Render the properties.
        papi_render_properties( papi_sort_order( array_reverse( $args['args'] ) ) );
    }

    /**
     * Setup actions.
     */
    private function setup_actions() {
        if ( post_type_exists( $this->get_post_type() ) && papi_get_meta_type() === 'post' ) {
            add_action( 'add_meta_boxes', [$this, 'setup_meta_box'] );

            if ( $this->box->context === 'after_title' ) {
                add_action( 'edit_form_after_title', [$this, 'move_meta_box_after_title'] );
            }
        } else {
            $this->setup_meta_box();
        }

        // Will be called on when you call do_meta_boxes
        // even without a real post type.
        add_action(
            sprintf(
                'postbox_classes_%s_%s',
                strtolower( $this->get_post_type() ),
                $this->box->id
            ),
            [$this, 'meta_box_css_classes']
        );
    }

    /**
     * Setup meta box.
     */
    public function setup_meta_box() {
        add_meta_box(
            $this->box->id,
            $this->get_title(),
            [$this, 'render_meta_box'],
            $this->get_post_type(),
            $this->box->context,
            $this->box->priority,
            $this->box->properties
        );
    }
}

Classes

Functions