Tips on enabling JS tooltips in Shadow DOM

I am currently developing an app using Vue and Bootstrap, where I am creating web components based on the official Vue documentation. The Bootstrap framework and my business logic are functioning well within the #shadow-root of the web components, behaving as if they were in the light DOM.

However, I have encountered an issue with Bootstrap tooltips (which rely on Popper.js). They do not seem to work properly within the Shadow DOM. Even when I attempted to use Popper.js and Tippy.js directly within the encapsulated code of the Shadow DOM, bypassing Bootstrap, I still faced challenges getting them to function correctly.

To see an example, click here: https://jsfiddle.net/mfep6rg9/

My assumption is that the third-party tooltip libraries struggle to locate the target DOM element due to it being within a Shadow DOM.

Are there any third-party solutions available that cater to Shadow DOM and web component encapsulation?

javascriptvue.jstooltipweb-componentshadow-dom

Answer №1

It seems that your guess is accurate. Third-party solutions using the document. method are unable to query shadowDOM elements.

In this case, it is likely that there is no third-party solution available because a viable solution would require either:

  • WebComponents that can relay Mouse positions to external sources.

  • A system where the host can access shadowDOM structures (including nested levels).

This situation bears resemblance to an IFRAME setup, albeit with even more limitations in place.

Answer №2

While developing LitElement Web Components, I encountered a similar issue and managed to resolve it with the following approach:

$(this.shadowRoot.querySelectorAll("[data-toggle='tooltip']")).tooltip();

To address this problem, it is important to specifically target the shadowRoot of the element and utilize querySelectorAll to capture all child elements within the shadowRoot that have an attribute of "data-toggle='tooltip'".

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