Kevlar-tabs NPM

Kevlar Tabs

Install

npm install kevlar-tabs

Usage

This package is only built as a module.

import Tabs from 'kevlar-tabs';

export const MyTabs = () => {
  const [activeTab, setActiveTab] = useState(0);

  return (
    <Tabs selected={activeTab} onSelect={setActiveTab}>
      <TabList>
        <Tab>Tab 1</Tab>
        <Tab>Tab 2</Tab>
        <Tab>Tab 3</Tab>
      </TabList>
      <TabPanel>Tab 1 content</TabPanel>
      <TabPanel>Tab 2 content</TabPanel>
      <TabPanel>Tab 3 content</TabPanel>
    </Tabs>
  )
}

You can also use named tabs and use the onNameSelected callback.

<Tab name="tab1">Tab 1</Tab>

Some panels could not be defined for some reason. You can manually specify the index of the panel:

<TabPanel>Tab 1 content</TabPanel>
<TabPanel index={2}>Tab 3 content</TabPanel>

Tabs properties

Property	Type	Description
`autoActivate`	`boolean`	(default: `true`) If true, it prevents auto activation of tabs on focus.
`focusOnInit`	`boolean`	(default: `false`) If true, the default selection tab takes the focus on init.
`selected`	`number` \| `string`	The index or the name of the selected tab.
`onSelect`	`function`	Callback function that is called when a tab is selected. Gives the index as a parameter.
`onNameSelect`	`function`	Callback function that is called when a tab is selected. Gives the name as a parameter.
`children`	`ReactNode`	`TabList` and `TabPanel` components.

Styling

You can use CSS classes that are set on the components:

Tabs have no class (but you can create your own container).
TabList has the class tablist.
Tab has the class tab in addition to tab--active when selected and tab--disabled when disabled.
TabPanel has the class tabpanel in addition to tabpanel--active when selected.

Custom classes

You use custom classes for the different states of the elements.

To do it, use the classNames property of Tabs and pass an object of this shape:

export type TabsClassNames = Partial<{
  tabList: string
  tab: string
  tabActive: string
  tabDisabled: string
  tabPanel: string
  tabPanelActive: string
  tabPanelDisabled: string
}>

You can also pass this configuration to sub-elements: className, classNameActive and classNameDisabled so that different tabs can have different styling since specific configuration takes precedence over the global one.

With styled-components

Using styled-components, one important thing to know is that you have defined the displayName of the component you want to wrap.

For instance:

import { Tab } from 'kevlar-tabs'
import styled from 'styled-components'

const CustomTab = styled(Tab)`
  color: white;
  background-color: purple;

  &[aria-active='true'] {
    font-weight: bold;
  }

  &[aria-disabled='true'] {
    color: #ccc;
    background-color: #544454;
  }
`

// THIS IS IMPORTANT
CustomTab.displayName = 'Tab'

displayName has to be set for Tab, TabList and TabPanel, and it takes the name of the component itself.