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