openWindow(url, width = 500, height = 500) {
            const { width: pcWidth, height: pcHeight } = window.screen;
            if(pcWidth < width) width = pcWidth;
            if(pcHeight < height) height = pcHeight;

            const left = (pcWidth - width) / 2;
            const top = (pcHeight - height) / 2;

            window.open(url, url, `width=${width},height=${height},left=${left},top=${top},resizable,scrollbars,status`);
        },