@bliss-design-system/button

<bliss-button> renders a button, or an anchor element styled as a button.

• Installation
• Usage

- Attributes - Styling - Accessibility

• Contributing

- Demoing with Storybook - Testing - Committing - Opening a merge request

• Troubleshooting

📦 Installation

To install this component, run:

yarn add @bliss-design-system/button

🏎 Usage

To use this component, you'll need to register the component to the window's Custom Elements Registry. In order to achieve that, you'll want to call this function within your application's client-facing entry file:

import { blissRegisterButton } from '@bliss-design-system/button';

blissRegisterButton(); // Registers <bliss-button>

That will make the component available in your application and you can use it like this:

<!-- renders a primary button with a default theme in medium size -->
<bliss-button>I am button</bliss-button>

To use the button with an icon, you'll need to have the <bliss-icon> component and the Iconsets registered to your application. Both are peer dependencies of this component, and you won't be able to see the icon without them.

<bliss-button icon="trash">
  Delete
</bliss-button>

To use the button with a loading spinner, you'll need to have the <bliss-loading> component registered to your application. It is a peer dependency of this component, and you won't be able to see the loading state without it.

<bliss-button loading>
  Doing things
</bliss-button>

There are multiple attributes you can add to the button to leverage different needs, e.g. for a secondary, full width, critical button:

<bliss-button variant="secondary" theme="critical" full-width>
  Very wide and important button
</bliss-button>

In addition to the examples above, the you can also render an <a> with button styling (including the button attributes defined below), by providing a href:

<bliss-button href="www.example.com">
  I'm a link!
</bliss-button>

Attributes

The button accepts the following attributes:
| Attribute | Type | Description | Default | Required | Options | | --------------- |:--------------:| :-------------------------:|:-------:|:--------:|:-------:| | size | string | defines the button size | medium | false | small, medium | | type | string | defines the button type | button | false | button, submit, reset | | theme | string | button theme | default | false | default, neutral, critical | | variant | string | button variant | primary | false | primary, secondary, ghost | | disabled | boolean | disable the button | false | false | - | | loading | boolean | display the loading spinner | false | false | - | | icon-only | boolean | display an icon only | false | false | - | | icon-trailing | boolean | display icon after the label | false | false | - | | full-width | boolean | make the button full width of its container | false | false | - |
For a link styled like a button, you can use the following attributes in addition to the ones in the table above:
| Attribute | Type | Description | Default | Required | Options | | --------------- |:--------------:| :-------------------------:|:-------:|:--------:|:-------:| | href | string | URL | '' | false | - | | target | string | where to display the linked URL | '' | false | _blank, _self, _top, _parent | | rel | string | relationship of the linked URL | '' | false | - | | download | string | download instead of navigate | '' | false | - |

Styling

The button comes with three themes to choose from, but we recognise that there might be instances where that might not be enough. If you need to change the color of the component, or of an icon or loading spinner within the component, you can access the styles with the ::part pseudo element. The implementation looks like this:

bliss-button::part(button) {
  color: green
}

>⚠️ Please note, Bliss can't support all of the variations that might come up over time, so it will be your full responsibility to maintain any changes that you make to the component that don't follow the existing API.

Accessibility

The <bliss-button> handles labelling for you in every state.
The only requirement is that you always pass in text content, even if you are using an icon-only variation of the button, because that is what the button relies on to populate its aria-label.
The colour contrast is handled out of the box for each variant and each theme.

🫕 Contributing

If you'd like to contribute, please open an issue with your suggested change on our Proposal Board. Once that is accepted, either the Bliss team will work on it or you can make changes locally by doing the following:

# Clone this repository
git clone https://gitlab.com/bliss-design-system/components.git

# Move into the component toolkit
cd components/

# Install the dependencies
yarn

You don't need to move into the package's directory to run storybook, tests or anything else. All of those commands exist in the root of the component toolkit, so while you can work on the component within its specific folder, you don't need to move through directories to run anything.

Demoing with Storybook

You can see all of your changes as you make them on Storybook.
To run a local instance of Storybook for this component, run:

yarn storybook

Testing

If you want to test as you develop, run:

yarn test

// or

yarn test:watch

Committing

We follow the Conventional Commits specification, meaning that you'll be prompted to fill out a descriptive message when you commit. We also use these commits to manage our releases, so we appreciate details.
As a guideline for this component, we use:

• fix for bug fixes, minor stylistic improvements, etc.
• feat for any backward compatible API changes.

For anything that breaks backwards compatibility or introduces significant changes that require a major version change, please get in touch with the team.

Opening a merge request

When you're ready to open a merge request, please use a descriptive title and fill out the provided template.
The team will be notified, but it helps to post your merge request in #blisssupport.

🙃 Troubleshooting

We'll fill this section out as we go and as issues are raised. But if you haven't found what you're looking for, get in touch via bliss@bryter.io or via the #blisssupport Slack channel ✨.