shadow-dom | A Shadow DOM v1 polyfill

by tuespetre JavaScript Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(10)Vulnerabilities Install Support

kandi X-RAY | shadow-dom Summary

shadow-dom is a JavaScript library typically used in Utilities applications. shadow-dom has no vulnerabilities, it has a Permissive License and it has low support. However shadow-dom has 1 bugs. You can download it from GitHub.

This repo aims to provide a polyfill for Shadow DOM v1 that is as spec-complete and correct as possible.

Support

Quality

Security

License

Reuse

Support

shadow-dom has a low active ecosystem.

It has 21 star(s) with 8 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 7 have been closed. On average issues are closed in 92 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of shadow-dom is current.

Quality

shadow-dom has 1 bugs (0 blocker, 0 critical, 1 major, 0 minor) and 0 code smells.

Security

shadow-dom has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

shadow-dom code analysis shows 0 unresolved vulnerabilities.

There are 3 security hotspots that need review.

License

shadow-dom is licensed under the MIT License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

shadow-dom releases are not available. You will need to build from source code and install.

It has 86 lines of code, 0 functions and 44 files.

It has low code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed shadow-dom and discovered the below as its top functions. This is intended to give you an instant insight into shadow-dom implemented functionality, and help decide if they suit your requirements.

Queues a mutation for a mutations .
Serialize a DOM fragment
Inserts a node into DOM
Removes a node from the parentNode .
Check if the specified element name is valid .
Calculates the path for the event target .
Replace child nodes with another node .
Wraps an event with custom event listeners .
return html constructor
Creates an element and pushes it to the appropriate element .

Get all kandi verified functions for this library.

shadow-dom Key Features

No Key Features are available at this moment for shadow-dom.

shadow-dom Examples and Code Snippets

No Code Snippets are available at this moment for shadow-dom.

Community Discussions

Trending Discussions on shadow-dom

Referencing the host element in Vue v3 Custom Element components

Webkit Pseudo Elements Documentation

Fade-Out Animation for Dialogs in Vaadin 14+

What exactly are the css boundaries in web components?

static shadowRootOptions in Litelements with Typescript, set mode to open or close

Handling multiple shadow element in cypress

open the "closed" shadowRoot of element inserted by other extension in chrome

Am I able to use properties on the index.html file on the vuejs mount element?

How do I create a Vue 3 custom element, including child component styles?

mui Select drop down options not styled when using entry point to insert scoped shadow DOM styles

QUESTION

Referencing the host element in Vue v3 Custom Element components

Asked 2022-Mar-29 at 09:37

OK so I know a few variations on this question have been asked already, across the various versions and APIs of Vue... But I haven't been able to figure it out so here's the context as to why I think mine is different:

I'm trying to build some components which:

Are internally complex enough that building with Vue rather than just native web components is helpful, but...
Will run outside Vue context on the page (not in a Vue app), so are packaged as Web Components / Custom Elements from Vue, and...
Implement data inputs that will be used inside s (again, not in Vue apps).

One challenge with this is that Vue Web Components use shadow DOM, and forms don't automatically traverse shadow roots to look for inputs: So making the form actually see and submit the components' inner data is not automatic.

It seems like there's some hope as detailed in this helpful blog post: A new ElementInternals API and element-internals-polyfill NPM package by which components can indicate data up to forms. Implementing a "form-associated custom element" requires setting a static readonly boolean property (easy enough) but also linking something like:

...

ANSWER

Answered 2022-Mar-29 at 09:37

Agree this is a bad code smell and a signal to evaluate whether Vue is really a good fit for the use case in general: Hacking around with hybrid Web Components that aren't quite native but aren't quite Vue either is likely to be a maintenance burden even if it works today.

But needs must - and my current workaround for this is to track back from some reference element in the template (doesn't really matter what) via DOM, like this:

Source https://stackoverflow.com/questions/71297767

QUESTION

Webkit Pseudo Elements Documentation

Asked 2022-Mar-27 at 18:42

I actually acomplished what I wanted to do: hiding some webkit pseudo-elements from the page when I want to print it, the code looks like below.

The problem is that I didnt learn anything from my research to do tha and I couldn't find any documentation about it, and every answer I saw about this topic only shows the code, without any further explanation.

...

ANSWER

Answered 2022-Feb-24 at 15:24

The best way to know which pseudo-elements you can work with is by reading specifications (like W3C standards) and realiable docs and resources (like MDN). If you can't find a particular pseudo-element there (or if it's only referred with a vendor prefix), you should probably avoid using it.

It seems ::-webkit-calendar-picker-indicator is supported by Blink and WebKit (follow the links for little pieces of information), but since it's poorly documented and also non-standard I would refrain from adopting it at all.

Source https://stackoverflow.com/questions/71133738

QUESTION

Fade-Out Animation for Dialogs in Vaadin 14+

Asked 2022-Mar-22 at 12:21

I'm wondering if there is a way to set the fadeout animation of dialogs in vaadin-flow 14.

In Vaadin 8 you could use the css classes "v-window-animate-in" and "v-window-animate-out" to archive this.

Since the div of dialog overlay div is in the shadow-dom i can not access it easly through css.

...

ANSWER

Answered 2022-Mar-22 at 12:21

Yes, it’s possible. And the default Lumo theme actually has a built-in close animation, but I suppose it’s so subtle you can miss it :)

Here you can find the built-in animations: https://github.com/vaadin/web-components/blob/master/packages/dialog/theme/lumo/vaadin-dialog-styles.js#L35-L67

Basically, you add an animation property to the host element when it has the [closing] attribute set on it (:host([closing])). The host element animation is used to track when the dialog can be removed from the DOM, so we are using a “dummy” animation on it with the same duration as the actual animations on the [part="overlay"] element. You can also animation the backdrop element ([part="backdrop"]).

Source https://stackoverflow.com/questions/71571529

QUESTION

What exactly are the css boundaries in web components?

Asked 2022-Feb-02 at 19:12


  
  
    Styles!
    somebody made a very broad selector

...

ANSWER

Answered 2022-Feb-02 at 19:12

The short answer is that inheritance crosses the Shadow DOM boundary.

See 3.1. Informative Explanation of Shadow DOM. In particular it says:

... the shadow tree, when it exists, is used in the construction of the flattened element tree, which CSS uses for all purposes after Selectors (including inheritance and box construction).

This is why custom properties (CSS variables) can cross the Shadow DOM boundary, as described in the CSS-Tricks article.

Since color is an inherited property, and in your example is not reassigned inside the shadow tree, the text inside inherits the blue color.

Source https://stackoverflow.com/questions/70960639

QUESTION

static shadowRootOptions in Litelements with Typescript, set mode to open or close

Asked 2022-Jan-20 at 13:08

I'm currently diving into Webcomponents with Litelements: In Webcomponents you can change the way the shadowdom works by defining the mode property as 'open' or 'closed'. Like this in vanilla Javascript without LitElements:

Javascript:

...

ANSWER

Answered 2022-Jan-20 at 13:08

By default lit element is acting in mode open. So customLitElement.shadowRoot returns a shadow-root.

If you want to run it in closed mode implement this method:

Source https://stackoverflow.com/questions/70769654

QUESTION

Handling multiple shadow element in cypress

Asked 2022-Jan-13 at 16:08

I am try to automation a screen that has multiple shadow elements. For example, I have to set data for a text field called 'Student Name'. This field has to traverse through multiple shadow elements.

...

ANSWER

Answered 2022-Jan-13 at 16:08

Go to cypress.json and write. This makes sure that all your get and find queries automatically go through shadow dom's without explicitly mentioning it.

Source https://stackoverflow.com/questions/70699514

QUESTION

open the "closed" shadowRoot of element inserted by other extension in chrome

Asked 2021-Dec-26 at 21:37

well google translate extension in chrome, has popup feature, it displays translation of selected word instantly, I wanted to access those translations displayed by popup, but this popup element is shadowRoot("closed"), so javascript cant access its content, I red an article about that subject and author says:

But really there is nothing stopping someone executing the following JavaScript before your component definition. Element.prototype._attachShadow = Element.prototype.attachShadow; Element.prototype.attachShadow = function () { return this._attachShadow( { mode: "open" } ); };

Is it possible to change attachShadow method of other extension? if so where should it be executed by my extension? background_script or maybe somewhere. I think each extension has its own enviroment and I have no chane to edit their methods. I wish I'm wrong :)

...

ANSWER

Answered 2021-Dec-26 at 21:37

No need to override it. Simply use this method in the content script:

Source https://stackoverflow.com/questions/70489914

QUESTION

Am I able to use properties on the index.html file on the vuejs mount element?

Asked 2021-Nov-10 at 06:30



  
    
    
    
    
    <%= htmlWebpackPlugin.options.title %>
  
  
    
      We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work
        properly without JavaScript enabled. Please enable it to
        continue.

...

ANSWER

Answered 2021-Nov-09 at 09:49

Data can be passed from the the page to entry point either with global variables:

Source https://stackoverflow.com/questions/69894829

QUESTION

How do I create a Vue 3 custom element, including child component styles?

Asked 2021-Nov-04 at 21:07

I tried Vue's defineCustomElement() to create a custom element, but the child component styles are not included in the shadow root for some reason.

I then tried to manually create my shadow root using the native Element.attachShadow() API instead of using defineCustomElement() (based on a Codesandbox), but then no styles were loaded at all:

Code: main.js:

...

ANSWER

Answered 2021-Nov-04 at 21:07

That Vue config is not necessary in Vue 3. It was only needed by the dev server in Vue 2 to render the styles in custom elements.

Using defineCustomElement() is the recommended way to register custom elements. However, there's an open issue when using defineCustomElement(), where nested component styles are not rendered at all (@vuejs/vue-next#4462).

A workaround is to import all components as custom elements so that the styles are attached to the component definition instead of being appended to , then insert those styles into the DOM upon mounting:

Enable vue-loader's customElement mode in vue.config.js:

Source https://stackoverflow.com/questions/69797635

QUESTION

mui Select drop down options not styled when using entry point to insert scoped shadow DOM styles

Asked 2021-Nov-03 at 17:21

Note that this is for MUI v5 @mui/material and NOT using v4 @material-ui/core

After finally figuring out how to make @mui/material styles show when using an entry point to emotion to insert scoped shadow DOM styles (see this post How to create insertion point to mount styles in shadow dom for MUI material v5 in React custom element), it turns out the Select drop down is not getting styled correctly for the Demo component which contains the @mui/material components.

Here is the stackblitz https://stackblitz.com/edit/react-d8xtdu-s2cufr?file=demo.js

...

ANSWER

Answered 2021-Nov-03 at 17:21

You should add MenuProps.disablePortal = true to mount Menu inside shadow DOM (to be able to use scoped styles)

Source https://stackoverflow.com/questions/69828392

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install shadow-dom

You can download it from GitHub.

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For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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