static dataApiKeydownHandler()

in src/site/assets/js/bootstrap.esm.js [2310:2356]
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();
    }
  }