rilwis/meta-box

<?php
/**
 * A registry for storing all meta boxes.
 *
 * @link https://designpatternsphp.readthedocs.io/en/latest/Structural/Registry/README.html
 */
class RWMB_Meta_Box_Registry {
    private $data = [];

    /**
     * Create a meta box object.
     *
     * @param array $settings Meta box settings.
     * @return \RW_Meta_Box
     */
    public function make( array $settings ) {
        $class_name = apply_filters( 'rwmb_meta_box_class_name', 'RW_Meta_Box', $settings );

        $meta_box = new $class_name( $settings );
        $this->add( $meta_box );
        return $meta_box;
    }

    public function add( RW_Meta_Box $meta_box ) {
        $this->data[ $meta_box->id ] = $meta_box;
    }

    public function get( $id ) {
        return $this->data[ $id ] ?? false;
    }

    /**
     * Get meta boxes under some conditions.
     *
     * @param array $args Custom argument to get meta boxes by.
     */
    public function get_by( array $args ) : array {
        $meta_boxes = $this->data;
        foreach ( $meta_boxes as $index => $meta_box ) {
            foreach ( $args as $key => $value ) {
                $meta_box_key = 'object_type' === $key ? $meta_box->get_object_type() : $meta_box->$key;
                if ( $meta_box_key !== $value ) {
                    unset( $meta_boxes[ $index ] );
                    continue 2; // Skip the meta box loop.
                }
            }
        }

        return $meta_boxes;
    }

    public function all() {
        return $this->data;
    }
}