signal-desktop/ts/components/Button.tsx

116 lines
2.7 KiB
TypeScript

// Copyright 2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import React, { MouseEventHandler, ReactNode } from 'react';
import classNames from 'classnames';
import { assert } from '../util/assert';
export enum ButtonSize {
Medium,
Small,
}
export enum ButtonVariant {
Primary,
Secondary,
SecondaryAffirmative,
SecondaryDestructive,
Destructive,
}
type PropsType = {
className?: string;
disabled?: boolean;
size?: ButtonSize;
variant?: ButtonVariant;
} & (
| {
onClick: MouseEventHandler<HTMLButtonElement>;
}
| {
type: 'submit';
}
) &
(
| {
'aria-label': string;
children: ReactNode;
}
| {
'aria-label'?: string;
children: ReactNode;
}
| {
'aria-label': string;
children?: ReactNode;
}
);
const SIZE_CLASS_NAMES = new Map<ButtonSize, string>([
[ButtonSize.Medium, 'module-Button--medium'],
[ButtonSize.Small, 'module-Button--small'],
]);
const VARIANT_CLASS_NAMES = new Map<ButtonVariant, string>([
[ButtonVariant.Primary, 'module-Button--primary'],
[ButtonVariant.Secondary, 'module-Button--secondary'],
[
ButtonVariant.SecondaryAffirmative,
'module-Button--secondary module-Button--secondary--affirmative',
],
[
ButtonVariant.SecondaryDestructive,
'module-Button--secondary module-Button--secondary--destructive',
],
[ButtonVariant.Destructive, 'module-Button--destructive'],
]);
export const Button = React.forwardRef<HTMLButtonElement, PropsType>(
(props, ref) => {
const {
children,
className,
disabled = false,
size = ButtonSize.Medium,
variant = ButtonVariant.Primary,
} = props;
const ariaLabel = props['aria-label'];
let onClick: undefined | MouseEventHandler<HTMLButtonElement>;
let type: 'button' | 'submit';
if ('onClick' in props) {
({ onClick } = props);
type = 'button';
} else {
onClick = undefined;
({ type } = props);
}
const sizeClassName = SIZE_CLASS_NAMES.get(size);
assert(sizeClassName, '<Button> size not found');
const variantClassName = VARIANT_CLASS_NAMES.get(variant);
assert(variantClassName, '<Button> variant not found');
return (
<button
aria-label={ariaLabel}
className={classNames(
'module-Button',
sizeClassName,
variantClassName,
className
)}
disabled={disabled}
onClick={onClick}
ref={ref}
// The `type` should either be "button" or "submit", which is effectively static.
// eslint-disable-next-line react/button-has-type
type={type}
>
{children}
</button>
);
}
);