src/vs/base/browser/ui/inputbox/inputBox.ts/InputBox/showMessage
class InputBox:	public showMessage(message: IMessage, force?: boolean): void {
		this.message = message;

		this.element.classList.remove('idle');
		this.element.classList.remove('info');
		this.element.classList.remove('warning');
		this.element.classList.remove('error');
		this.element.classList.add(this.classForType(message.type));

		const styles = this.stylesForType(this.message.type);
		this.element.style.border = styles.border ? `1px solid ${styles.border}` : '';

		if (this.hasFocus() || force) {
			this._showMessage();
		}
	}