mastodon/app/javascript/flavours/glitch/components/status_content.js

413 lines
13 KiB
JavaScript

import React from 'react';
import ImmutablePropTypes from 'react-immutable-proptypes';
import PropTypes from 'prop-types';
import { isRtl } from 'flavours/glitch/util/rtl';
import { FormattedMessage } from 'react-intl';
import Permalink from './permalink';
import classnames from 'classnames';
import { autoPlayGif } from 'flavours/glitch/util/initial_state';
import { decode as decodeIDNA } from 'flavours/glitch/util/idna';
// Regex matching what "looks like a link", that is, something that starts with
// an optional "http://" or "https://" scheme and then what could look like a
// domain main, that is, at least two sequences of characters not including spaces
// and separated by "." or an homoglyph. The idea is not to match valid URLs or
// domain names, but what could be confused for a valid URL or domain name,
// especially to the untrained eye.
const h_confusables = 'h\u13c2\u1d58d\u1d4f1\u1d691\u0068\uff48\u1d525\u210e\u1d489\u1d629\u0570\u1d4bd\u1d65d\u1d421\u1d5c1\u1d5f5\u04bb\u1d559';
const t_confusables = 't\u1d42d\u1d5cd\u1d531\u1d565\u1d4c9\u1d669\u1d4fd\u1d69d\u0074\u1d461\u1d601\u1d495\u1d635\u1d599';
const p_confusables = 'p\u0440\u03c1\u1d52d\u1d631\u1d665\u1d429\uff50\u1d6e0\u1d45d\u1d561\u1d595\u1d71a\u1d699\u1d78e\u2ca3\u1d754\u1d6d2\u1d491\u1d7c8\u1d746\u1d4c5\u1d70c\u1d5c9\u0070\u1d780\u03f1\u1d5fd\u2374\u1d7ba\u1d4f9';
const s_confusables = 's\u1d530\u118c1\u1d494\u1d634\u1d4c8\u1d668\uabaa\u1d42c\u1d5cc\u1d460\u1d600\ua731\u0073\uff53\u1d564\u0455\u1d598\u1d4fc\u1d69c\u10448\u01bd';
const column_confusables = ':\u0903\u0a83\u0703\u1803\u05c3\u0704\u0589\u1809\ua789\u16ec\ufe30\u02d0\u2236\u02f8\u003a\uff1a\u205a\ua4fd';
const slash_confusables = '/\u2041\u2f03\u2044\u2cc6\u27cb\u30ce\u002f\u2571\u31d3\u3033\u1735\u2215\u29f8\u1d23a\u4e3f';
const dot_confusables = '.\u002e\u0660\u06f0\u0701\u0702\u2024\ua4f8\ua60e\u10a50\u1d16d';
const linkRegex = new RegExp(`^\\s*(([${h_confusables}][${t_confusables}][${t_confusables}][${p_confusables}][${s_confusables}]?[${column_confusables}][${slash_confusables}][${slash_confusables}]))?[^:/\\n ]+([${dot_confusables}][^:/\\n ]+)+`);
const textMatchesTarget = (text, origin, host) => {
return (text === origin || text === host
|| text.startsWith(origin + '/') || text.startsWith(host + '/')
|| 'www.' + text === host || ('www.' + text).startsWith(host + '/'));
}
// If `checkUrlLike` is true, consider only URL-like link texts to be misleading
const isLinkMisleading = (link, checkUrlLike = true) => {
let linkTextParts = [];
// Reconstruct visible text, as we do not have much control over how links
// from remote software look, and we can't rely on `innerText` because the
// `invisible` class does not set `display` to `none`.
const walk = (node) => {
switch (node.nodeType) {
case Node.TEXT_NODE:
linkTextParts.push(node.textContent);
break;
case Node.ELEMENT_NODE:
if (node.classList.contains('invisible')) return;
const children = node.childNodes;
for (let i = 0; i < children.length; i++) {
walk(children[i]);
}
break;
}
};
walk(link);
const linkText = linkTextParts.join('');
const targetURL = new URL(link.href);
// The following may not work with international domain names
if (textMatchesTarget(linkText, targetURL.origin, targetURL.host) || textMatchesTarget(linkText.toLowerCase(), targetURL.origin, targetURL.host)) {
return false;
}
// The link hasn't been recognized, maybe it features an international domain name
const hostname = decodeIDNA(targetURL.hostname);
const host = targetURL.host.replace(targetURL.hostname, hostname);
const origin = targetURL.origin.replace(targetURL.host, host);
if (textMatchesTarget(linkText, origin, host)) {
return false;
}
// If the link text looks like an URL or auto-generated link, it is misleading
return !checkUrlLike || linkRegex.test(linkText);
};
export default class StatusContent extends React.PureComponent {
static propTypes = {
status: ImmutablePropTypes.map.isRequired,
expanded: PropTypes.bool,
collapsed: PropTypes.bool,
onExpandedToggle: PropTypes.func,
media: PropTypes.element,
mediaIcon: PropTypes.string,
parseClick: PropTypes.func,
disabled: PropTypes.bool,
onUpdate: PropTypes.func,
linkRewriting: PropTypes.string,
};
static defaultProps = {
linkRewriting: 'tag',
};
state = {
hidden: true,
};
_updateStatusLinks () {
const node = this.contentsNode;
const { linkRewriting } = this.props;
if (!node) {
return;
}
const links = node.querySelectorAll('a');
for (var i = 0; i < links.length; ++i) {
let link = links[i];
if (link.classList.contains('status-link')) {
continue;
}
link.classList.add('status-link');
let mention = this.props.status.get('mentions').find(item => link.href === item.get('url'));
if (mention) {
link.addEventListener('click', this.onMentionClick.bind(this, mention), false);
link.setAttribute('title', mention.get('acct'));
} else if (link.textContent[0] === '#' || (link.previousSibling && link.previousSibling.textContent && link.previousSibling.textContent[link.previousSibling.textContent.length - 1] === '#')) {
link.addEventListener('click', this.onHashtagClick.bind(this, link.text), false);
} else {
link.addEventListener('click', this.onLinkClick.bind(this), false);
link.setAttribute('title', link.href);
link.classList.add('unhandled-link');
if (linkRewriting === 'rewrite' && isLinkMisleading(link)) {
// Rewrite misleading links entirely
while (link.firstChild) {
link.removeChild(link.firstChild);
}
const prefix = (link.href.match(/https?:\/\/(www\.)?/) || [''])[0];
const text = link.href.substr(prefix.length, 30);
const suffix = link.href.substr(prefix.length + 30);
const cutoff = !!suffix;
const prefixTag = document.createElement('span');
prefixTag.classList.add('invisible');
prefixTag.textContent = prefix;
link.appendChild(prefixTag);
const textTag = document.createElement('span');
if (cutoff) {
textTag.classList.add('ellipsis');
}
textTag.textContent = text;
link.appendChild(textTag);
const suffixTag = document.createElement('span');
suffixTag.classList.add('invisible');
suffixTag.textContent = suffix;
link.appendChild(suffixTag);
} else if (linkRewriting === 'tag' && isLinkMisleading(link, false)) {
// Add a tag besides the link to display its origin
const tag = document.createElement('span');
tag.classList.add('link-origin-tag');
tag.textContent = `[${new URL(link.href).host}]`;
link.insertAdjacentText('beforeend', ' ');
link.insertAdjacentElement('beforeend', tag);
}
}
link.setAttribute('target', '_blank');
link.setAttribute('rel', 'noopener');
}
}
_updateStatusEmojis () {
const node = this.node;
if (!node || autoPlayGif) {
return;
}
const emojis = node.querySelectorAll('.custom-emoji');
for (var i = 0; i < emojis.length; i++) {
let emoji = emojis[i];
if (emoji.classList.contains('status-emoji')) {
continue;
}
emoji.classList.add('status-emoji');
emoji.addEventListener('mouseenter', this.handleEmojiMouseEnter, false);
emoji.addEventListener('mouseleave', this.handleEmojiMouseLeave, false);
}
}
componentDidMount () {
this._updateStatusLinks();
this._updateStatusEmojis();
}
componentDidUpdate () {
this._updateStatusLinks();
this._updateStatusEmojis();
if (this.props.onUpdate) this.props.onUpdate();
}
onLinkClick = (e) => {
if (this.props.collapsed) {
if (this.props.parseClick) this.props.parseClick(e);
}
}
onMentionClick = (mention, e) => {
if (this.props.parseClick) {
this.props.parseClick(e, `/accounts/${mention.get('id')}`);
}
}
onHashtagClick = (hashtag, e) => {
hashtag = hashtag.replace(/^#/, '').toLowerCase();
if (this.props.parseClick) {
this.props.parseClick(e, `/timelines/tag/${hashtag}`);
}
}
handleEmojiMouseEnter = ({ target }) => {
target.src = target.getAttribute('data-original');
}
handleEmojiMouseLeave = ({ target }) => {
target.src = target.getAttribute('data-static');
}
handleMouseDown = (e) => {
this.startXY = [e.clientX, e.clientY];
}
handleMouseUp = (e) => {
const { parseClick, disabled } = this.props;
if (disabled || !this.startXY) {
return;
}
const [ startX, startY ] = this.startXY;
const [ deltaX, deltaY ] = [Math.abs(e.clientX - startX), Math.abs(e.clientY - startY)];
let element = e.target;
while (element) {
if (element.localName === 'button' || element.localName === 'video' || element.localName === 'a' || element.localName === 'label') {
return;
}
element = element.parentNode;
}
if (deltaX + deltaY < 5 && e.button === 0 && parseClick) {
parseClick(e);
}
this.startXY = null;
}
handleSpoilerClick = (e) => {
e.preventDefault();
if (this.props.onExpandedToggle) {
this.props.onExpandedToggle();
} else {
this.setState({ hidden: !this.state.hidden });
}
}
setRef = (c) => {
this.node = c;
}
setContentsRef = (c) => {
this.contentsNode = c;
}
render () {
const {
status,
media,
mediaIcon,
parseClick,
disabled,
linkRewriting,
} = this.props;
const hidden = this.props.onExpandedToggle ? !this.props.expanded : this.state.hidden;
const content = { __html: status.get('contentHtml') };
const spoilerContent = { __html: status.get('spoilerHtml') };
const directionStyle = { direction: 'ltr' };
const classNames = classnames('status__content', {
'status__content--with-action': parseClick && !disabled,
'status__content--with-spoiler': status.get('spoiler_text').length > 0,
});
if (isRtl(status.get('search_index'))) {
directionStyle.direction = 'rtl';
}
if (status.get('spoiler_text').length > 0) {
let mentionsPlaceholder = '';
const mentionLinks = status.get('mentions').map(item => (
<Permalink
to={`/accounts/${item.get('id')}`}
href={item.get('url')}
key={item.get('id')}
className='mention'
>
@<span>{item.get('username')}</span>
</Permalink>
)).reduce((aggregate, item) => [...aggregate, item, ' '], []);
const toggleText = hidden ? [
<FormattedMessage
id='status.show_more'
defaultMessage='Show more'
key='0'
/>,
mediaIcon ? (
<i
className={
`fa fa-fw fa-${mediaIcon} status__content__spoiler-icon`
}
aria-hidden='true'
key='1'
/>
) : null,
] : [
<FormattedMessage
id='status.show_less'
defaultMessage='Show less'
key='0'
/>,
];
if (hidden) {
mentionsPlaceholder = <div>{mentionLinks}</div>;
}
return (
<div className={classNames} tabIndex='0' onMouseDown={this.handleMouseDown} onMouseUp={this.handleMouseUp} ref={this.setRef}>
<p
style={{ marginBottom: hidden && status.get('mentions').isEmpty() ? '0px' : null }}
>
<span dangerouslySetInnerHTML={spoilerContent} lang={status.get('language')} />
{' '}
<button tabIndex='0' className='status__content__spoiler-link' onClick={this.handleSpoilerClick}>
{toggleText}
</button>
</p>
{mentionsPlaceholder}
<div className={`status__content__spoiler ${!hidden ? 'status__content__spoiler--visible' : ''}`}>
<div
ref={this.setContentsRef}
key={`contents-${linkRewriting}`}
style={directionStyle}
tabIndex={!hidden ? 0 : null}
dangerouslySetInnerHTML={content}
className='status__content__text'
lang={status.get('language')}
/>
{media}
</div>
</div>
);
} else if (parseClick) {
return (
<div
className={classNames}
style={directionStyle}
onMouseDown={this.handleMouseDown}
onMouseUp={this.handleMouseUp}
tabIndex='0'
ref={this.setRef}
>
<div
ref={this.setContentsRef}
key={`contents-${linkRewriting}`}
dangerouslySetInnerHTML={content}
lang={status.get('language')}
className='status__content__text'
tabIndex='0'
/>
{media}
</div>
);
} else {
return (
<div
className='status__content'
style={directionStyle}
tabIndex='0'
ref={this.setRef}
>
<div ref={this.setContentsRef} key={`contents-${linkRewriting}`} className='status__content__text' dangerouslySetInnerHTML={content} lang={status.get('language')} tabIndex='0' />
{media}
</div>
);
}
}
}