signal-desktop/ts/components/conversationList/MessageBodyHighlight.tsx

142 lines
3.3 KiB
TypeScript

// Copyright 2019-2021 Signal Messenger, LLC
// SPDX-License-Identifier: AGPL-3.0-only
import React, { ReactNode } from 'react';
import { MESSAGE_TEXT_CLASS_NAME } from './BaseConversationListItem';
import { AtMentionify } from '../conversation/AtMentionify';
import { MessageBody } from '../conversation/MessageBody';
import { Emojify } from '../conversation/Emojify';
import { AddNewLines } from '../conversation/AddNewLines';
import { SizeClassType } from '../emoji/lib';
import {
BodyRangesType,
LocalizerType,
RenderTextCallbackType,
} from '../../types/Util';
const CLASS_NAME = `${MESSAGE_TEXT_CLASS_NAME}__message-search-result-contents`;
export type Props = {
bodyRanges: BodyRangesType;
text: string;
i18n: LocalizerType;
};
const renderEmoji = ({
text,
key,
sizeClass,
renderNonEmoji,
}: {
i18n: LocalizerType;
text: string;
key: number;
sizeClass?: SizeClassType;
renderNonEmoji: RenderTextCallbackType;
}) => (
<Emojify
key={key}
text={text}
sizeClass={sizeClass}
renderNonEmoji={renderNonEmoji}
/>
);
export class MessageBodyHighlight extends React.Component<Props> {
private readonly renderNewLines: RenderTextCallbackType = ({
text: textWithNewLines,
key,
}) => {
const { bodyRanges } = this.props;
return (
<AddNewLines
key={key}
text={textWithNewLines}
renderNonNewLine={({ text, key: innerKey }) => (
<AtMentionify bodyRanges={bodyRanges} key={innerKey} text={text} />
)}
/>
);
};
private renderContents(): ReactNode {
const { bodyRanges, text, i18n } = this.props;
const results: Array<JSX.Element> = [];
const FIND_BEGIN_END = /<<left>>(.+?)<<right>>/g;
const processedText = AtMentionify.preprocessMentions(text, bodyRanges);
let match = FIND_BEGIN_END.exec(processedText);
let last = 0;
let count = 1;
if (!match) {
return (
<MessageBody
bodyRanges={bodyRanges}
disableJumbomoji
disableLinks
text={text}
i18n={i18n}
/>
);
}
const sizeClass = '';
while (match) {
if (last < match.index) {
const beforeText = processedText.slice(last, match.index);
count += 1;
results.push(
renderEmoji({
text: beforeText,
sizeClass,
key: count,
i18n,
renderNonEmoji: this.renderNewLines,
})
);
}
const [, toHighlight] = match;
count += 2;
results.push(
<span className="module-message-body__highlight" key={count - 1}>
{renderEmoji({
text: toHighlight,
sizeClass,
key: count,
i18n,
renderNonEmoji: this.renderNewLines,
})}
</span>
);
last = FIND_BEGIN_END.lastIndex;
match = FIND_BEGIN_END.exec(processedText);
}
if (last < processedText.length) {
count += 1;
results.push(
renderEmoji({
text: processedText.slice(last),
sizeClass,
key: count,
i18n,
renderNonEmoji: this.renderNewLines,
})
);
}
return results;
}
public render(): ReactNode {
return <div className={CLASS_NAME}>{this.renderContents()}</div>;
}
}