show()

in applications/clouddemo/net4/CloudDemo.Mvc/Scripts/bootstrap.esm.js [3847:3904]

• 39 lines of code
• 11 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.eventName(EVENT_SHOW$2));
    const shadowRoot = findShadowRoot(this._element);

    const isInTheDom = (shadowRoot || this._element.ownerDocument.documentElement).contains(this._element);

    if (showEvent.defaultPrevented || !isInTheDom) {
      return;
    } // todo v6 remove this OR make it optional


    this._disposePopper();

    const tip = this._getTipElement();

    this._element.setAttribute('aria-describedby', tip.getAttribute('id'));

    const {
      container
    } = this._config;

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

    this._popper = this._createPopper(tip);
    tip.classList.add(CLASS_NAME_SHOW$2); // 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) {
      for (const element of [].concat(...document.body.children)) {
        EventHandler.on(element, 'mouseover', noop);
      }
    }

    const complete = () => {
      EventHandler.trigger(this._element, this.constructor.eventName(EVENT_SHOWN$2));

      if (this._isHovered === false) {
        this._leave();
      }

      this._isHovered = false;
    };

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