show()

in src/site/assets/js/bootstrap.bundle.js [5467:5547]
60 lines of code
14 McCabe index (conditional complexity)

    show() {
      if (this._element.style.display === 'none') {
        throw new Error('Please use show on visible elements');
      }

      if (!(this.isWithContent() && this._isEnabled)) {
        return;
      }

      const showEvent = EventHandler.trigger(this._element, this.constructor.Event.SHOW);
      const shadowRoot = findShadowRoot(this._element);
      const isInTheDom = shadowRoot === null ? this._element.ownerDocument.documentElement.contains(this._element) : shadowRoot.contains(this._element);

      if (showEvent.defaultPrevented || !isInTheDom) {
        return;
      }

      const tip = this.getTipElement();
      const tipId = getUID(this.constructor.NAME);
      tip.setAttribute('id', tipId);

      this._element.setAttribute('aria-describedby', tipId);

      if (this._config.animation) {
        tip.classList.add(CLASS_NAME_FADE$2);
      }

      const placement = typeof this._config.placement === 'function' ? this._config.placement.call(this, tip, this._element) : this._config.placement;

      const attachment = this._getAttachment(placement);

      this._addAttachmentClass(attachment);

      const {
        container
      } = this._config;
      Data.set(tip, this.constructor.DATA_KEY, this);

      if (!this._element.ownerDocument.documentElement.contains(this.tip)) {
        container.append(tip);
        EventHandler.trigger(this._element, this.constructor.Event.INSERTED);
      }

      if (this._popper) {
        this._popper.update();
      } else {
        this._popper = createPopper(this._element, tip, this._getPopperConfig(attachment));
      }

      tip.classList.add(CLASS_NAME_SHOW$2);

      const customClass = this._resolvePossibleFunction(this._config.customClass);

      if (customClass) {
        tip.classList.add(...customClass.split(' '));
      } // If this is a touch-enabled device we add extra
      // empty mouseover listeners to the body's immediate children;
      // only needed because of broken event delegation on iOS
      // https://www.quirksmode.org/blog/archives/2014/02/mouse_event_bub.html


      if ('ontouchstart' in document.documentElement) {
        [].concat(...document.body.children).forEach(element => {
          EventHandler.on(element, 'mouseover', noop);
        });
      }

      const complete = () => {
        const prevHoverState = this._hoverState;
        this._hoverState = null;
        EventHandler.trigger(this._element, this.constructor.Event.SHOWN);

        if (prevHoverState === HOVER_STATE_OUT) {
          this._leave(null, this);
        }
      };

      const isAnimated = this.tip.classList.contains(CLASS_NAME_FADE$2);

      this._queueCallback(complete, this.tip, isAnimated);
    }