streams/Code/Extend/Widget.php

<?php

namespace Code\Extend;

class Widget
{

    public static function register($file, $widget): void
    {
        $rt = self::get();
        $rt[] = [$file, $widget];
        self::set($rt);
    }

    public static function unregister($file, $widget): void
    {
        $rt = self::get();
        if ($rt) {
            $n = [];
            foreach ($rt as $r) {
                if ($r[0] !== $file && $r[1] !== $widget) {
                    $n[] = $r;
                }
            }
            self::set($n);
        }
    }

    public static function unregister_by_file($file): void
    {
        $rt = self::get();
        if ($rt) {
            $n = [];
            foreach ($rt as $r) {
                if ($r[0] !== $file) {
                    $n[] = $r;
                }
            }
            self::set($n);
        }
    }

    public static function get()
    {
        return get_config('system', 'widgets', []);
    }

    public static function set($r)
    {
        return set_config('system', 'widgets', $r);
    }
}