static dataApiKeydownHandler()

in src/site/assets/js/bootstrap.bundle.js [4090:4136]
30 lines of code
17 McCabe index (conditional complexity)

    static dataApiKeydownHandler(event) {
      // If not input/textarea:
      //  - And not a key in REGEXP_KEYDOWN => not a dropdown command
      // If input/textarea:
      //  - If space key => not a dropdown command
      //  - If key is other than escape
      //    - If key is not up or down => not a dropdown command
      //    - If trigger inside the menu => not a dropdown command
      if (/input|textarea/i.test(event.target.tagName) ? event.key === SPACE_KEY || event.key !== ESCAPE_KEY$2 && (event.key !== ARROW_DOWN_KEY && event.key !== ARROW_UP_KEY || event.target.closest(SELECTOR_MENU)) : !REGEXP_KEYDOWN.test(event.key)) {
        return;
      }

      const isActive = this.classList.contains(CLASS_NAME_SHOW$6);

      if (!isActive && event.key === ESCAPE_KEY$2) {
        return;
      }

      event.preventDefault();
      event.stopPropagation();

      if (isDisabled(this)) {
        return;
      }

      const getToggleButton = this.matches(SELECTOR_DATA_TOGGLE$3) ? this : SelectorEngine.prev(this, SELECTOR_DATA_TOGGLE$3)[0];
      const instance = Dropdown.getOrCreateInstance(getToggleButton);

      if (event.key === ESCAPE_KEY$2) {
        instance.hide();
        return;
      }

      if (event.key === ARROW_UP_KEY || event.key === ARROW_DOWN_KEY) {
        if (!isActive) {
          instance.show();
        }

        instance._selectMenuItem(event);

        return;
      }

      if (!isActive || event.key === SPACE_KEY) {
        Dropdown.clearMenus();
      }
    }