343 lines
13 KiB
JavaScript
343 lines
13 KiB
JavaScript
/*
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Copyright 2017 New Vector Ltd
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Copyright 2019 Michael Telatynski <7t3chguy@gmail.com>
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Copyright 2019 The Matrix.org Foundation C.I.C.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import React from 'react';
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import * as sdk from '../../../index';
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import {_t} from '../../../languageHandler';
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import PropTypes from 'prop-types';
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import dis from '../../../dispatcher';
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import {wantsDateSeparator} from '../../../DateUtils';
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import {MatrixEvent} from 'matrix-js-sdk';
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import {makeUserPermalink, RoomPermalinkCreator} from "../../../utils/permalinks/Permalinks";
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import SettingsStore from "../../../settings/SettingsStore";
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import escapeHtml from "escape-html";
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import MatrixClientContext from "../../../contexts/MatrixClientContext";
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// This component does no cycle detection, simply because the only way to make such a cycle would be to
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// craft event_id's, using a homeserver that generates predictable event IDs; even then the impact would
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// be low as each event being loaded (after the first) is triggered by an explicit user action.
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export default class ReplyThread extends React.Component {
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static propTypes = {
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// the latest event in this chain of replies
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parentEv: PropTypes.instanceOf(MatrixEvent),
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// called when the ReplyThread contents has changed, including EventTiles thereof
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onHeightChanged: PropTypes.func.isRequired,
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permalinkCreator: PropTypes.instanceOf(RoomPermalinkCreator).isRequired,
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};
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static contextType = MatrixClientContext;
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constructor(props) {
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super(props);
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this.state = {
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// The loaded events to be rendered as linear-replies
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events: [],
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// The latest loaded event which has not yet been shown
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loadedEv: null,
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// Whether the component is still loading more events
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loading: true,
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// Whether as error was encountered fetching a replied to event.
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err: false,
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};
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this.onQuoteClick = this.onQuoteClick.bind(this);
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this.canCollapse = this.canCollapse.bind(this);
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this.collapse = this.collapse.bind(this);
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}
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static getParentEventId(ev) {
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if (!ev || ev.isRedacted()) return;
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// XXX: For newer relations (annotations, replacements, etc.), we now
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// have a `getRelation` helper on the event, and you might assume it
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// could be used here for replies as well... However, the helper
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// currently assumes the relation has a `rel_type`, which older replies
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// do not, so this block is left as-is for now.
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const mRelatesTo = ev.getWireContent()['m.relates_to'];
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if (mRelatesTo && mRelatesTo['m.in_reply_to']) {
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const mInReplyTo = mRelatesTo['m.in_reply_to'];
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if (mInReplyTo && mInReplyTo['event_id']) return mInReplyTo['event_id'];
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}
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}
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// Part of Replies fallback support
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static stripPlainReply(body) {
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// Removes lines beginning with `> ` until you reach one that doesn't.
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const lines = body.split('\n');
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while (lines.length && lines[0].startsWith('> ')) lines.shift();
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// Reply fallback has a blank line after it, so remove it to prevent leading newline
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if (lines[0] === '') lines.shift();
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return lines.join('\n');
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}
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// Part of Replies fallback support
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static stripHTMLReply(html) {
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return html.replace(/^<mx-reply>[\s\S]+?<\/mx-reply>/, '');
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}
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// Part of Replies fallback support
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static getNestedReplyText(ev, permalinkCreator) {
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if (!ev) return null;
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let {body, formatted_body: html} = ev.getContent();
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if (this.getParentEventId(ev)) {
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if (body) body = this.stripPlainReply(body);
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if (html) html = this.stripHTMLReply(html);
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}
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if (!body) body = ""; // Always ensure we have a body, for reasons.
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// Escape the body to use as HTML below.
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// We also run a nl2br over the result to fix the fallback representation. We do this
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// after converting the text to safe HTML to avoid user-provided BR's from being converted.
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if (!html) html = escapeHtml(body).replace(/\n/g, '<br/>');
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// dev note: do not rely on `body` being safe for HTML usage below.
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const evLink = permalinkCreator.forEvent(ev.getId());
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const userLink = makeUserPermalink(ev.getSender());
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const mxid = ev.getSender();
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// This fallback contains text that is explicitly EN.
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switch (ev.getContent().msgtype) {
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case 'm.text':
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case 'm.notice': {
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html = `<mx-reply><blockquote><a href="${evLink}">In reply to</a> <a href="${userLink}">${mxid}</a>`
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+ `<br>${html}</blockquote></mx-reply>`;
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const lines = body.trim().split('\n');
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if (lines.length > 0) {
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lines[0] = `<${mxid}> ${lines[0]}`;
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body = lines.map((line) => `> ${line}`).join('\n') + '\n\n';
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}
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break;
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}
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case 'm.image':
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html = `<mx-reply><blockquote><a href="${evLink}">In reply to</a> <a href="${userLink}">${mxid}</a>`
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+ `<br>sent an image.</blockquote></mx-reply>`;
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body = `> <${mxid}> sent an image.\n\n`;
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break;
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case 'm.video':
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html = `<mx-reply><blockquote><a href="${evLink}">In reply to</a> <a href="${userLink}">${mxid}</a>`
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+ `<br>sent a video.</blockquote></mx-reply>`;
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body = `> <${mxid}> sent a video.\n\n`;
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break;
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case 'm.audio':
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html = `<mx-reply><blockquote><a href="${evLink}">In reply to</a> <a href="${userLink}">${mxid}</a>`
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+ `<br>sent an audio file.</blockquote></mx-reply>`;
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body = `> <${mxid}> sent an audio file.\n\n`;
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break;
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case 'm.file':
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html = `<mx-reply><blockquote><a href="${evLink}">In reply to</a> <a href="${userLink}">${mxid}</a>`
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+ `<br>sent a file.</blockquote></mx-reply>`;
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body = `> <${mxid}> sent a file.\n\n`;
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break;
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case 'm.emote': {
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html = `<mx-reply><blockquote><a href="${evLink}">In reply to</a> * `
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+ `<a href="${userLink}">${mxid}</a><br>${html}</blockquote></mx-reply>`;
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const lines = body.trim().split('\n');
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if (lines.length > 0) {
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lines[0] = `* <${mxid}> ${lines[0]}`;
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body = lines.map((line) => `> ${line}`).join('\n') + '\n\n';
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}
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break;
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}
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default:
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return null;
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}
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return {body, html};
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}
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static makeReplyMixIn(ev) {
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if (!ev) return {};
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return {
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'm.relates_to': {
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'm.in_reply_to': {
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'event_id': ev.getId(),
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},
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},
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};
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}
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static makeThread(parentEv, onHeightChanged, permalinkCreator, ref) {
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if (!ReplyThread.getParentEventId(parentEv)) {
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return <div />;
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}
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return <ReplyThread parentEv={parentEv} onHeightChanged={onHeightChanged}
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ref={ref} permalinkCreator={permalinkCreator} />;
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}
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componentWillMount() {
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this.unmounted = false;
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this.room = this.context.getRoom(this.props.parentEv.getRoomId());
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this.room.on("Room.redaction", this.onRoomRedaction);
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// same event handler as Room.redaction as for both we just do forceUpdate
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this.room.on("Room.redactionCancelled", this.onRoomRedaction);
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this.initialize();
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}
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componentDidUpdate() {
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this.props.onHeightChanged();
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}
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componentWillUnmount() {
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this.unmounted = true;
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if (this.room) {
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this.room.removeListener("Room.redaction", this.onRoomRedaction);
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this.room.removeListener("Room.redactionCancelled", this.onRoomRedaction);
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}
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}
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onRoomRedaction = (ev, room) => {
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if (this.unmounted) return;
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// If one of the events we are rendering gets redacted, force a re-render
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if (this.state.events.some(event => event.getId() === ev.getId())) {
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this.forceUpdate();
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}
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};
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async initialize() {
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const {parentEv} = this.props;
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// at time of making this component we checked that props.parentEv has a parentEventId
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const ev = await this.getEvent(ReplyThread.getParentEventId(parentEv));
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if (this.unmounted) return;
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if (ev) {
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this.setState({
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events: [ev],
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}, this.loadNextEvent);
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} else {
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this.setState({err: true});
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}
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}
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async loadNextEvent() {
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if (this.unmounted) return;
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const ev = this.state.events[0];
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const inReplyToEventId = ReplyThread.getParentEventId(ev);
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if (!inReplyToEventId) {
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this.setState({
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loading: false,
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});
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return;
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}
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const loadedEv = await this.getEvent(inReplyToEventId);
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if (this.unmounted) return;
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if (loadedEv) {
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this.setState({loadedEv});
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} else {
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this.setState({err: true});
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}
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}
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async getEvent(eventId) {
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const event = this.room.findEventById(eventId);
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if (event) return event;
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try {
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// ask the client to fetch the event we want using the context API, only interface to do so is to ask
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// for a timeline with that event, but once it is loaded we can use findEventById to look up the ev map
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await this.context.getEventTimeline(this.room.getUnfilteredTimelineSet(), eventId);
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} catch (e) {
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// if it fails catch the error and return early, there's no point trying to find the event in this case.
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// Return null as it is falsey and thus should be treated as an error (as the event cannot be resolved).
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return null;
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}
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return this.room.findEventById(eventId);
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}
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canCollapse() {
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return this.state.events.length > 1;
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}
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collapse() {
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this.initialize();
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}
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onQuoteClick() {
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const events = [this.state.loadedEv, ...this.state.events];
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this.setState({
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loadedEv: null,
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events,
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}, this.loadNextEvent);
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dis.dispatch({action: 'focus_composer'});
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}
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render() {
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let header = null;
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if (this.state.err) {
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header = <blockquote className="mx_ReplyThread mx_ReplyThread_error">
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{
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_t('Unable to load event that was replied to, ' +
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'it either does not exist or you do not have permission to view it.')
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}
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</blockquote>;
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} else if (this.state.loadedEv) {
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const ev = this.state.loadedEv;
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const Pill = sdk.getComponent('elements.Pill');
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const room = this.context.getRoom(ev.getRoomId());
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header = <blockquote className="mx_ReplyThread">
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{
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_t('<a>In reply to</a> <pill>', {}, {
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'a': (sub) => <a onClick={this.onQuoteClick} className="mx_ReplyThread_show">{ sub }</a>,
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'pill': <Pill type={Pill.TYPE_USER_MENTION} room={room}
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url={makeUserPermalink(ev.getSender())} shouldShowPillAvatar={true} />,
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})
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}
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</blockquote>;
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} else if (this.state.loading) {
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const Spinner = sdk.getComponent("elements.Spinner");
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header = <Spinner w={16} h={16} />;
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}
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const EventTile = sdk.getComponent('views.rooms.EventTile');
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const DateSeparator = sdk.getComponent('messages.DateSeparator');
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const evTiles = this.state.events.map((ev) => {
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let dateSep = null;
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if (wantsDateSeparator(this.props.parentEv.getDate(), ev.getDate())) {
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dateSep = <a href={this.props.url}><DateSeparator ts={ev.getTs()} /></a>;
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}
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return <blockquote className="mx_ReplyThread" key={ev.getId()}>
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{ dateSep }
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<EventTile
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mxEvent={ev}
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tileShape="reply"
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onHeightChanged={this.props.onHeightChanged}
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permalinkCreator={this.props.permalinkCreator}
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isRedacted={ev.isRedacted()}
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isTwelveHour={SettingsStore.getValue("showTwelveHourTimestamps")} />
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</blockquote>;
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});
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return <div>
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<div>{ header }</div>
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<div>{ evTiles }</div>
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</div>;
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}
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}
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