static dataApiKeydownHandler()

in applications/clouddemo/net4/CloudDemo.Mvc/Scripts/bootstrap.bundle.js [4192:4227]

• 25 lines of code
• 10 McCabe index (conditional complexity)

    static dataApiKeydownHandler(event) {
      // If not an UP | DOWN | ESCAPE key => not a dropdown command
      // If input/textarea && if key is other than ESCAPE => not a dropdown command
      const isInput = /input|textarea/i.test(event.target.tagName);
      const isEscapeEvent = event.key === ESCAPE_KEY$2;
      const isUpOrDownEvent = [ARROW_UP_KEY$1, ARROW_DOWN_KEY$1].includes(event.key);

      if (!isUpOrDownEvent && !isEscapeEvent) {
        return;
      }

      if (isInput && !isEscapeEvent) {
        return;
      }

      event.preventDefault(); // todo: v6 revert #37011 & change markup https://getbootstrap.com/docs/5.2/forms/input-group/

      const getToggleButton = this.matches(SELECTOR_DATA_TOGGLE$3) ? this : SelectorEngine.prev(this, SELECTOR_DATA_TOGGLE$3)[0] || SelectorEngine.next(this, SELECTOR_DATA_TOGGLE$3)[0] || SelectorEngine.findOne(SELECTOR_DATA_TOGGLE$3, event.delegateTarget.parentNode);
      const instance = Dropdown.getOrCreateInstance(getToggleButton);

      if (isUpOrDownEvent) {
        event.stopPropagation();
        instance.show();

        instance._selectMenuItem(event);

        return;
      }

      if (instance._isShown()) {
        // else is escape and we check if it is shown
        event.stopPropagation();
        instance.hide();
        getToggleButton.focus();
      }
    }