<?php
add_filter( 'rwmb_meta_boxes', function( $meta_boxes ) {
    $meta_boxes[] = [
        'title'           => 'Test Text',
        'id'              => 'text-trigger',
        'type'            => 'block',
        'icon'            => 'awards',
        'category'        => 'tsm',
        'context'         => 'side',
        'render_callback' => function() {
            echo 'This is the block content';
        },
        'fields'          => [
            [
                'id'                => 'triggers',
                'type'              => 'group',
                'name'              => 'Контент',
                'clone'             => true,
                'sort_clone'        => true,
                'add_button'        => '+',
                'collapsible'       => true,
                'group_title'       => 'Элемент {#}',
                'save_state'        => true,
                'fields'            => [
                    [
                        'id'   => 'icon',
                        'type' => 'single_image',
                        'name' => 'Иконка',
                    ],
                    [
                        'id'      => 'text',
                        'type'    => 'wysiwyg',
                        'name'    => 'Текст',
                        'options' => [
                            'media_buttons'   => false,
                            'teeny'           => true,
                            'textarea_rows'   => 10,
                            'tinymce'         => [
                                'media_buttons'    => false,
                                'drag_drop_upload' => false,
                                'content_css'      => get_template_directory_uri() . '/assets/css/tinymce.min.css',
                                'toolbar1'         => 'styleselect,bold,italic,bullist,numlist,link,unlink,fullscreen',
                                'toolbar2'         => 'alignleft,aligncenter,alignright,undo,redo',
                                'style_formats'    => [
                                    [
                                        'title'   => 'Имитация strong',
                                        'inline'  => 'span',
                                        'classes' => 'strong'
                                    ],
                                    [
                                        'title'   => 'Имитация italic',
                                        'inline'  => 'span',
                                        'classes' => 'em'
                                    ],
                                ],
                            ],
                            'quicktags' => [
                                'buttons' => 'strong,em,u,link,ul,ol,li',
                            ],
                        ],
                    ],
                ]
            ],
        ],
    ];

    return $meta_boxes;
} );