Method _onInnerButtonFocusIn

packages/main/src/SplitButton.ts:283–288

(e: FocusEvent)

	}

	_onInnerButtonFocusIn(e: FocusEvent) {
		e.stopPropagation();
		this._setTabIndexValue(true);
		const target = e.target as Button;
		target.focus();
	}

	_onKeyDown(e: KeyboardEvent) {
		if (this._isArrowKeyAction(e)) {