signal-desktop/ts/components/conversation/Emojify.tsx

83 lines
2 KiB
TypeScript

// Copyright 2018 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import React from 'react';
import classNames from 'classnames';
import type { RenderTextCallbackType } from '../../types/Util';
import { splitByEmoji } from '../../util/emoji';
import { missingCaseError } from '../../util/missingCaseError';
import type { SizeClassType } from '../emoji/lib';
import { emojiToImage } from '../emoji/lib';
// Some of this logic taken from emoji-js/replacement
// the DOM structure for this getImageTag should match the other emoji implementations:
// ts/components/emoji/Emoji.tsx
// ts/quill/emoji/blot.tsx
function getImageTag({
isInvisible,
key,
match,
sizeClass,
}: {
isInvisible?: boolean;
key: string | number;
match: string;
sizeClass?: SizeClassType;
}): JSX.Element | string {
const img = emojiToImage(match);
if (!img) {
return match;
}
return (
<img
key={key}
src={img}
aria-label={match}
className={classNames(
'emoji',
sizeClass,
isInvisible ? 'emoji--invisible' : null
)}
alt={match}
/>
);
}
export type Props = {
/** When behind a spoiler, this emoji needs to be visibility: hidden */
isInvisible?: boolean;
/** A class name to be added to the generated emoji images */
sizeClass?: SizeClassType;
/** Allows you to customize now non-newlines are rendered. Simplest is just a <span>. */
renderNonEmoji?: RenderTextCallbackType;
text: string;
};
const defaultRenderNonEmoji: RenderTextCallbackType = ({ text }) => text;
export function Emojify({
isInvisible,
renderNonEmoji = defaultRenderNonEmoji,
sizeClass,
text,
}: Props): JSX.Element {
return (
<>
{splitByEmoji(text).map(({ type, value: match }, index) => {
if (type === 'emoji') {
return getImageTag({ isInvisible, match, sizeClass, key: index });
}
if (type === 'text') {
return renderNonEmoji({ text: match, key: index });
}
throw missingCaseError(type);
})}
</>
);
}