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

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import React from 'react';
import ImmutablePropTypes from 'react-immutable-proptypes';
import PropTypes from 'prop-types';
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import { isRtl } from 'flavours/glitch/util/rtl';
import { FormattedMessage } from 'react-intl';
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import Permalink from './permalink';
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import classnames from 'classnames';
import Icon from 'flavours/glitch/components/icon';
import { autoPlayGif } from 'flavours/glitch/util/initial_state';
import { decode as decodeIDNA } from 'flavours/glitch/util/idna';
const textMatchesTarget = (text, origin, host) => {
return (text === origin || text === host
|| text.startsWith(origin + '/') || text.startsWith(host + '/')
|| 'www.' + text === host || ('www.' + text).startsWith(host + '/'));
}
const isLinkMisleading = (link) => {
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);
if (targetURL.protocol === 'magnet:') {
return !linkText.startsWith('magnet:');
}
if (targetURL.protocol === 'xmpp:') {
return !(linkText === targetURL.href || 'xmpp:' + linkText === targetURL.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).normalize('NFKC');
const host = targetURL.host.replace(targetURL.hostname, hostname);
const origin = targetURL.origin.replace(targetURL.host, host);
const text = linkText.normalize('NFKC');
return !(textMatchesTarget(text, origin, host) || textMatchesTarget(text.toLowerCase(), origin, host));
};
export default class StatusContent extends React.PureComponent {
static propTypes = {
status: ImmutablePropTypes.map.isRequired,
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expanded: PropTypes.bool,
collapsed: PropTypes.bool,
onExpandedToggle: PropTypes.func,
media: PropTypes.element,
mediaIcon: PropTypes.string,
parseClick: PropTypes.func,
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disabled: PropTypes.bool,
onUpdate: PropTypes.func,
tagLinks: PropTypes.bool,
rewriteMentions: PropTypes.string,
};
static defaultProps = {
tagLinks: true,
rewriteMentions: 'no',
};
state = {
hidden: true,
};
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_updateStatusLinks () {
const node = this.contentsNode;
const { tagLinks, rewriteMentions } = this.props;
if (!node) {
return;
}
const links = node.querySelectorAll('a');
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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'));
if (rewriteMentions !== 'no') {
while (link.firstChild) link.removeChild(link.firstChild);
link.appendChild(document.createTextNode('@'));
const acctSpan = document.createElement('span');
acctSpan.textContent = rewriteMentions === 'acct' ? mention.get('acct') : mention.get('username');
link.appendChild(acctSpan);
}
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} else if (link.textContent[0] === '#' || (link.previousSibling && link.previousSibling.textContent && link.previousSibling.textContent[link.previousSibling.textContent.length - 1] === '#')) {
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link.addEventListener('click', this.onHashtagClick.bind(this, link.text), false);
} else {
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link.addEventListener('click', this.onLinkClick.bind(this), false);
link.setAttribute('title', link.href);
link.classList.add('unhandled-link');
try {
if (tagLinks && isLinkMisleading(link)) {
// Add a tag besides the link to display its origin
const url = new URL(link.href);
const tag = document.createElement('span');
tag.classList.add('link-origin-tag');
switch (url.protocol) {
case 'xmpp:':
tag.textContent = `[${url.href}]`;
break;
case 'magnet:':
tag.textContent = '(magnet)';
break;
default:
tag.textContent = `[${url.host}]`;
}
link.insertAdjacentText('beforeend', ' ');
link.insertAdjacentElement('beforeend', tag);
}
} catch (e) {
// The URL is invalid, remove the href just to be safe
if (tagLinks && e instanceof TypeError) link.removeAttribute('href');
}
}
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link.setAttribute('target', '_blank');
link.setAttribute('rel', 'noopener noreferrer');
}
}
_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);
}
}
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componentDidMount () {
this._updateStatusLinks();
this._updateStatusEmojis();
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}
componentDidUpdate () {
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this._updateStatusLinks();
this._updateStatusEmojis();
if (this.props.onUpdate) this.props.onUpdate();
}
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onLinkClick = (e) => {
if (this.props.collapsed) {
if (this.props.parseClick) this.props.parseClick(e);
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}
}
onMentionClick = (mention, e) => {
if (this.props.parseClick) {
this.props.parseClick(e, `/accounts/${mention.get('id')}`);
}
}
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onHashtagClick = (hashtag, e) => {
hashtag = hashtag.replace(/^#/, '');
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if (this.props.parseClick) {
this.props.parseClick(e, `/timelines/tag/${hashtag}`);
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}
}
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 (['button', 'video', 'a', 'label', 'wave'].includes(element.localName)) {
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 () {
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const {
status,
media,
mediaIcon,
parseClick,
disabled,
tagLinks,
rewriteMentions,
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} = this.props;
const hidden = this.props.onExpandedToggle ? !this.props.expanded : this.state.hidden;
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const content = { __html: status.get('contentHtml') };
const spoilerContent = { __html: status.get('spoilerHtml') };
const directionStyle = { direction: 'ltr' };
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const classNames = classnames('status__content', {
'status__content--with-action': parseClick && !disabled,
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'status__content--with-spoiler': status.get('spoiler_text').length > 0,
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});
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 ? (
<Icon
fixedWidth
className='status__content__spoiler-icon'
id={mediaIcon}
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} />
{' '}
<button tabIndex='0' className='status__content__spoiler-link' onClick={this.handleSpoilerClick}>
{toggleText}
</button>
</p>
{mentionsPlaceholder}
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<div className={`status__content__spoiler ${!hidden ? 'status__content__spoiler--visible' : ''}`}>
<div
ref={this.setContentsRef}
key={`contents-${tagLinks}`}
style={directionStyle}
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tabIndex={!hidden ? 0 : null}
dangerouslySetInnerHTML={content}
className='status__content__text'
/>
{media}
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</div>
</div>
);
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} else if (parseClick) {
return (
<div
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className={classNames}
style={directionStyle}
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onMouseDown={this.handleMouseDown}
onMouseUp={this.handleMouseUp}
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tabIndex='0'
ref={this.setRef}
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>
<div
ref={this.setContentsRef}
key={`contents-${tagLinks}-${rewriteMentions}`}
dangerouslySetInnerHTML={content}
className='status__content__text'
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tabIndex='0'
/>
{media}
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</div>
);
} else {
return (
<div
className='status__content'
style={directionStyle}
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tabIndex='0'
ref={this.setRef}
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>
<div ref={this.setContentsRef} key={`contents-${tagLinks}`} className='status__content__text' dangerouslySetInnerHTML={content} tabIndex='0' />
{media}
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</div>
);
}
}
}