@asphalt-react/button

Button

Buttons provide a way to trigger an action. The caption of a Button should hint what action it'll perform. The caption is typically text but Buttons can also have an icon with text or just an icon (which we call as Icon Button).

Buttons's caption decides its width by default, but it can also stretch to take its container's width. Buttons can form a group by sticking to each other enabling use cases like split button.

Usage

import { Button } from '@asphalt-react/button'

<Button>Click me</Button>

Variants & Intents

Buttons come in 4 variants to emphasize different levels:

• Primary (default): For strong call to an action.
• Secondary: For supporting primary buttons.
• Tertiary: For actions less important than primary actions.
• Nude: For least important actions.

There are 3 intents, which paired with the above variants address multiple supportive actions:

• Brand (default): For most recommended action.
• Danger: For actions that have some element of risk like deletion.
• System: For less recommended actions.

Variants and an intents are mutually exclusive. Button falls back to the default value if a variant or intent occurs more than once. For example, using primary and nude together will fallback to a primary variant.

Sizes

Buttons support 4 sizes: - extra small (xs) - small (s) - medium (m) - large (l)

Link styled as Button

Button features the ability to render a semantic link styled as a button (which we call Link Button). Link Buttons and Icon Link Buttons — icon as caption — handle security and privacy risks if the link opens in a new tab.

Split Button

You can make a split button by grouping a default action button with a menu button.

Set stickEnd to true on start button and stickStart to true on the end button.

Use stick prop optionally on the the end button to enhance it's style in order to make default and menu button look good together. stick adds spacing to the left of the primary, tertiary & nude variant buttons, in case of secondary variant it removes the left border.

import { Button } from '@asphalt-react/button'

<div>
    <Button stickEnd>Default action</Button>
    <Button stickStart stick>Menu</Button>
</div>

Accessibility

1. Buttons accept React ref to give access to the underlying element.

2. They accept most of the button element's attributes such as disabled & onClick and supports data-* attributes.

3. The rendered button element has a type attribute set to "button". You may override the type attribute if needed.

4. All buttons are focusable and keyboard navigable; tab (or shift+tab when tabbing backwards).

5. space and enter keys trigger the buttons when in focus.

6. enter key triggers the link buttons when in focus.

7. All buttons accept the aria-* attributes button role.

8. Link buttons accept the aria-* attributes for the link role.

Accessibility must-haves

Add aria-label or aria-labelledby in Icon Button to help assistive technologies.

Props

children

React node for button's caption

type	required	default
node	true	N/A

primary

Renders a primary variant

type	required	default
bool	false	false

secondary

Renders a secondary variant

type	required	default
bool	false	false

tertiary

Renders a tertiary variant

type	required	default
bool	false	false

nude

Renders a nude variant

type	required	default
bool	false	false

brand

Renders brand intent

type	required	default
bool	false	false

danger

Renders danger intent

type	required	default
bool	false	false

system

Renders system intent

type	required	default
bool	false	false

link

Renders a link button

type	required	default
bool	false	false

as

Link element to render. Accepts an HTML element or a React component.

type	required	default
elementType	false	"a"

asProps

Accepts props & attributes for the link element.

type	required	default
object	false	{ href: "." }

icon

Renders an icon button

type	required	default
bool	false	false

compact

Shrinks the size of the Button keeping the size of the contents intact. Useful for use-cases with space-constraints.

type	required	default
bool	false	false

qualifier

Qualifier is an icon or a word that enhances the caption. Button prepends the qualifier by default. Accepts SVG for icons. Checkout @asphalt-react/iconpack for SVG wrapped React components.

⚠️ Do not use qualifier to render an icon button, use icon prop instead

type	required	default
union	false	null

qualifierEnd

Appends qualifier to the caption

type	required	default
bool	false	false

size

Controls size of button. Possible values are "xs", "s", "m", "l" for extra small, small, medium & large respectively

type	required	default
enum	false	"m"

stretch

Stretches Button to take it's container width

type	required	default
bool	false	false

stickStart

Adapts to let other buttons stick to its start

type	required	default
bool	false	false

stickEnd

Adapts to let other buttons stick to its end

type	required	default
bool	false	false

stick

Enhances the style of the supporting button.

type	required	default
bool	false	false

underline

Adds underline in link Button

type	required	default
bool	false	true