97 lines
2.5 KiB
TypeScript
97 lines
2.5 KiB
TypeScript
// Copyright 2022 Signal Messenger, LLC
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// SPDX-License-Identifier: AGPL-3.0-only
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import type { KeyboardEvent } from 'react';
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import React, { useState } from 'react';
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import classNames from 'classnames';
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import { assertDev } from '../util/assert';
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import { getClassNamesFor } from '../util/getClassNamesFor';
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type Tab = {
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id: string;
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label: string;
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};
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export type BaseTabsOptionsType = {
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moduleClassName?: string;
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tabs: Array<Tab>;
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};
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export type ControlledTabsOptionsType = BaseTabsOptionsType & {
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selectedTab: string;
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onTabChange: (selectedTab: string) => unknown;
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};
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export type UncontrolledTabsOptionsType = BaseTabsOptionsType & {
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initialSelectedTab?: string;
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onTabChange?: (selectedTab: string) => unknown;
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};
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export type TabsOptionsType =
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| ControlledTabsOptionsType
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| UncontrolledTabsOptionsType;
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type TabsProps = {
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selectedTab: string;
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tabsHeaderElement: JSX.Element;
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};
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export function useTabs(options: TabsOptionsType): TabsProps {
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assertDev(options.tabs.length, 'Tabs needs more than 1 tab present');
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const getClassName = getClassNamesFor('Tabs', options.moduleClassName);
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let selectedTab: string;
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let onChange: (selectedTab: string) => void;
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if ('selectedTab' in options) {
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selectedTab = options.selectedTab;
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onChange = options.onTabChange;
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} else {
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// useTabs should always be either controlled or uncontrolled.
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// This is enforced by the type system.
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// eslint-disable-next-line react-hooks/rules-of-hooks
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const [tabState, setTabState] = useState<string>(
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options.initialSelectedTab || options.tabs[0].id
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);
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selectedTab = tabState;
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onChange = (newTab: string) => {
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setTabState(newTab);
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options.onTabChange?.(newTab);
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};
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}
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const tabsHeaderElement = (
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<div className={getClassName('')}>
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{options.tabs.map(({ id, label }) => (
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<div
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className={classNames(
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getClassName('__tab'),
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selectedTab === id && getClassName('__tab--selected')
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)}
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key={id}
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onClick={() => {
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onChange(id);
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}}
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onKeyUp={(e: KeyboardEvent) => {
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if (e.target === e.currentTarget && e.keyCode === 13) {
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onChange(id);
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e.preventDefault();
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e.stopPropagation();
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}
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}}
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role="tab"
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tabIndex={0}
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>
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{label}
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</div>
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))}
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</div>
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);
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return {
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selectedTab,
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tabsHeaderElement,
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};
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}
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