☰

SE Preview on hover

Shows preview of the linked questions/answers on hover

当前为 2017-03-05 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name           SE Preview on hover
  3. // @description    Shows preview of the linked questions/answers on hover
  4. // @version        0.5.2
  5. // @author         wOxxOm
  6. // @namespace      wOxxOm.scripts
  7. // @license        MIT License
  8. // @match          *://*.stackoverflow.com/*
  9. // @match          *://*.superuser.com/*
  10. // @match          *://*.serverfault.com/*
  11. // @match          *://*.askubuntu.com/*
  12. // @match          *://*.stackapps.com/*
  13. // @match          *://*.mathoverflow.net/*
  14. // @match          *://*.stackexchange.com/*
  15. // @include        /https?:\/\/www\.?google(\.com?)?(\.\w\w)?\/(webhp|q|.*?[?#]q=|search).*/
  16. // @match          *://*.bing.com/*
  17. // @match          *://*.yahoo.com/*
  18. // @match          *://*.yahoo.co.jp/*
  19. // @match          *://*.yahoo.cn/*
  20. // @include        /https?:\/\/(\w+\.)*yahoo.(com|\w\w(\.\w\w)?)\/.*/
  21. // @require        https://greasyfork.org/scripts/12228/code/setMutationHandler.js
  22. // @require        https://greasyfork.org/scripts/27531/code/LZString-2xspeedup.js
  23. // @grant          GM_addStyle
  24. // @grant          GM_xmlhttpRequest
  25. // @grant          GM_getValue
  26. // @grant          GM_setValue
  27. // @connect        stackoverflow.com
  28. // @connect        superuser.com
  29. // @connect        serverfault.com
  30. // @connect        askubuntu.com
  31. // @connect        stackapps.com
  32. // @connect        mathoverflow.net
  33. // @connect        stackexchange.com
  34. // @connect        cdn.sstatic.net
  35. // @run-at         document-end
  36. // @noframes
  37. // ==/UserScript==
  38.  
  39. /* jshint lastsemic:true, multistr:true, laxbreak:true, -W030, -W041, -W084 */
  40.  
  41. const PREVIEW_DELAY = 200;
  42. const CACHE_DURATION = 1 * 60 * 1000; // 1 minute for the recently active posts, scales up logarithmically
  43. const MIN_HEIGHT = 400; // px
  44. const COLORS = {
  45. 	question: {
  46. 		backRGB: '80, 133, 195',
  47. 		fore: '#265184',
  48. 	},
  49. 	answer: {
  50. 		backRGB: '112, 195, 80',
  51. 		fore: '#3f7722',
  52. 		foreInv: 'white',
  53. 	},
  54. 	deleted: {
  55. 		backRGB: '181, 103, 103',
  56. 		fore: 'rgb(181, 103, 103)',
  57. 		foreInv: 'white',
  58. 	},
  59. 	closed: {
  60. 		backRGB: '255, 206, 93',
  61. 		fore: 'rgb(194, 136, 0)',
  62. 		foreInv: 'white',
  63. 	},
  64. };
  65.  
  66. let xhr;
  67. const xhrNoSSL = new Set();
  68. const preview = {
  69. 	frame: null,
  70. 	link: null,
  71. 	hover: {x:0, y:0},
  72. 	timer: 0,
  73. 	stylesOverride: '',
  74. };
  75. const lockScroll = {};
  76.  
  77. const {full: rxPreviewable, siteOnly: rxPreviewableSite} = getURLregexForMatchedSites();
  78. const thisPageUrls = getPageBaseUrls(location.href);
  79.  
  80. initStyles();
  81. initPolyfills();
  82. setMutationHandler('a', onLinkAdded, {processExisting: true});
  83. setTimeout(cleanupCache, 10000);
  84.  
  85. /**************************************************************/
  86.  
  87. function onLinkAdded(links) {
  88. 	for (let i = 0, link; (link = links[i++]); ) {
  89. 		if (isLinkPreviewable(link)) {
  90. 			link.removeAttribute('title');
  91. 			$on('mouseover', link, onLinkHovered);
  92. 		}
  93. 	}
  94. }
  95.  
  96. function onLinkHovered(e) {
  97. 	if (hasKeyModifiers(e))
  98. 		return;
  99. 	preview.link = this;
  100. 	$on('mousemove', this, onLinkMouseMove);
  101. 	$on('mouseout', this, abortPreview);
  102. 	$on('mousedown', this, abortPreview);
  103. 	restartPreviewTimer(this);
  104. }
  105.  
  106. function onLinkMouseMove(e) {
  107. 	let stoppedMoving = Math.abs(preview.hover.x - e.clientX) < 2 &&
  108. 		Math.abs(preview.hover.y - e.clientY) < 2;
  109. 	if (!stoppedMoving)
  110. 		return;
  111. 	preview.hover.x = e.clientX;
  112. 	preview.hover.y = e.clientY;
  113. 	restartPreviewTimer(this);
  114. }
  115.  
  116. function restartPreviewTimer(link) {
  117. 	clearTimeout(preview.timer);
  118. 	preview.timer = setTimeout(() => {
  119. 		preview.timer = 0;
  120. 		if (!link.matches(':hover'))
  121. 			return releaseLinkListeners(link);
  122. 		$off('mousemove', link, onLinkMouseMove);
  123. 		downloadPreview(link);
  124. 	}, PREVIEW_DELAY);
  125. }
  126.  
  127. function abortPreview(e) {
  128. 	releaseLinkListeners(this);
  129. 	preview.timer = setTimeout(link => {
  130. 		if (link == preview.link && preview.frame && !preview.frame.matches(':hover'))
  131. 			preview.frame.contentWindow.postMessage('SEpreview-hidden', '*');
  132. 	}, PREVIEW_DELAY * 3, this);
  133. 	if (xhr)
  134. 		xhr.abort();
  135. }
  136.  
  137. function releaseLinkListeners(link = preview.link) {
  138. 	$off('mousemove', link, onLinkMouseMove);
  139. 	$off('mouseout', link, abortPreview);
  140. 	$off('mousedown', link, abortPreview);
  141. 	if (preview.timer)
  142. 		clearTimeout(preview.timer);
  143. }
  144.  
  145. function fadeOut(element, transition) {
  146. 	return new Promise(resolve => {
  147. 		if (transition) {
  148. 			element.style.transition = typeof transition == 'number' ? `opacity ${transition}s ease-in-out` : transition;
  149. 			setTimeout(doFadeOut);
  150. 		} else
  151. 			doFadeOut();
  152.  
  153. 		function doFadeOut() {
  154. 			element.style.opacity = '0';
  155. 			$on('transitionend', element, done);
  156. 			$on('visibilitychange', done);
  157. 			function done(e) {
  158. 				$off('transitionend', element, done);
  159. 				$off('visibilitychange', done);
  160. 				if (element.style.opacity == '0')
  161. 					element.style.display = 'none';
  162. 				resolve();
  163. 			}
  164. 		}
  165. 	});
  166. }
  167.  
  168. function fadeIn(element) {
  169. 	element.style.opacity = '0';
  170. 	element.style.display = 'block';
  171. 	setTimeout(() => element.style.opacity = '1');
  172. }
  173.  
  174. function downloadPreview(link) {
  175. 	const cached = readCache(link.href);
  176. 	if (cached)
  177. 		return showPreview(cached);
  178. 	doXHR({url: httpsUrl(link.href)}).then(r => {
  179. 		const html = r.responseText;
  180. 		const lastActivity = link.matches(':hover') ? +showPreview({finalUrl: r.finalUrl, html}) : Date.now();
  181. 		if (!lastActivity)
  182. 			return;
  183. 		const inactiveDays = Math.max(0, (Date.now() - lastActivity) / (24 * 3600 * 1000));
  184. 		const cacheDuration = CACHE_DURATION * Math.pow(Math.log(inactiveDays + 1) + 1, 2);
  185. 		setTimeout(writeCache, 1000, {url: link.href, finalUrl: r.finalUrl, html, cacheDuration});
  186. 	});
  187. }
  188.  
  189. function initPreview() {
  190. 	preview.frame = document.createElement('iframe');
  191. 	preview.frame.id = 'SEpreview';
  192. 	document.body.appendChild(preview.frame);
  193. 	makeResizable();
  194.  
  195. 	lockScroll.attach = e => {
  196. 		if (lockScroll.pos)
  197. 			return;
  198. 		lockScroll.pos = {x: scrollX, y: scrollY};
  199. 		$on('scroll', document, lockScroll.run);
  200. 		$on('mouseover', document, lockScroll.detach);
  201. 	};
  202. 	lockScroll.run = e => scrollTo(lockScroll.pos.x, lockScroll.pos.y);
  203. 	lockScroll.detach = e => {
  204. 		if (!lockScroll.pos)
  205. 			return;
  206. 		lockScroll.pos = null;
  207. 		$off('mouseover', document, lockScroll.detach);
  208. 		$off('scroll', document, lockScroll.run);
  209. 	};
  210.  
  211. 	const killer = mutations => mutations.forEach(m => [...m.addedNodes].forEach(n => n.remove()));
  212. 	const killerMO = {
  213. 		head: new MutationObserver(killer),
  214. 		documentElement: new MutationObserver(killer),
  215. 	};
  216. 	preview.killInvaders = {
  217. 		start: () => Object.keys(killerMO).forEach(k => killerMO[k].observe(preview.frame.contentDocument[k], {childList: true})),
  218. 		stop: () => Object.keys(killerMO).forEach(k => killerMO[k].disconnect()),
  219. 	};
  220. }
  221.  
  222. function showPreview({finalUrl, html, doc}) {
  223. 	doc = doc || new DOMParser().parseFromString(html, 'text/html');
  224. 	if (!doc || !doc.head)
  225. 		return error('no HEAD in the document received for', finalUrl);
  226.  
  227. 	if (!$('base', doc))
  228. 		doc.head.insertAdjacentHTML('afterbegin', `<base href="${finalUrl}">`);
  229.  
  230. 	const answerIdMatch = finalUrl.match(/questions\/\d+\/[^\/]+\/(\d+)/);
  231. 	const isQuestion = !answerIdMatch;
  232. 	const postId = answerIdMatch ? '#answer-' + answerIdMatch[1] : '#question';
  233. 	const post = $(postId + ' .post-text', doc);
  234. 	if (!post)
  235. 		return error('No parsable post found', doc);
  236. 	const isDeleted = !!post.closest('.deleted-answer');
  237. 	const title = $('meta[property="og:title"]', doc).content;
  238. 	const status = isQuestion && !$('.question-status', post) ? $('.question-status', doc) : null;
  239. 	const isClosed = $('.question-originals-of-duplicate, .close-as-off-topic-status-list, .close-status-suffix', doc);
  240. 	const comments = $(`${postId} .comments`, doc);
  241. 	const commentsHidden = +$('tbody', comments).dataset.remainingCommentsCount;
  242. 	const commentsShowLink = commentsHidden && $(`${postId} .js-show-link.comments-link`, doc);
  243. 	const finalUrlOfQuestion = getCacheableUrl(finalUrl);
  244. 	const lastActivity = tryCatch(() => new Date($('.lastactivity-link', doc).title).getTime()) || Date.now();
  245. 	const answers = $$('.answer', doc);
  246. 	const hasAnswers = answers.length > (isQuestion ? 0 : 1);
  247.  
  248. 	markPreviewableLinks(doc);
  249. 	$$remove('script', doc);
  250.  
  251. 	if (!preview.frame)
  252. 		initPreview();
  253.  
  254. 	let pvDoc, pvWin;
  255. 	preview.frame.style.display = '';
  256. 	preview.frame.setAttribute('SEpreview-type',
  257. 		isDeleted ? 'deleted' : isQuestion ? (isClosed ? 'closed' : 'question') : 'answer');
  258. 	preview.frame.classList.toggle('SEpreview-hasAnswers', hasAnswers);
  259.  
  260. 	onFrameReady(preview.frame).then(
  261. 		() => {
  262. 			pvDoc = preview.frame.contentDocument;
  263. 			pvWin = preview.frame.contentWindow;
  264. 			initPolyfills(pvWin);
  265. 			preview.killInvaders.stop();
  266. 		})
  267. 		.then(addStyles)
  268. 		.then(render)
  269. 		.then(show);
  270. 	return lastActivity;
  271.  
  272. 	function markPreviewableLinks(container) {
  273. 		for (let link of $$('a:not(.SEpreviewable)', container)) {
  274. 			if (rxPreviewable.test(link.href)) {
  275. 				link.removeAttribute('title');
  276. 				link.classList.add('SEpreviewable');
  277. 			}
  278. 		}
  279. 	}
  280.  
  281. 	function markHoverableUsers(container) {
  282. 		for (let link of $$('a[href*="/users/"]', container)) {
  283. 			if (rxPreviewableSite.test(link.href) && link.pathname.match(/^\/users\/\d+/)) {
  284. 				link.onmouseover = loadUserCard;
  285. 				link.classList.add('SEpreview-userLink');
  286. 			}
  287. 		}
  288. 	}
  289.  
  290. 	function addStyles() {
  291. 		const SEpreviewStyles = $replaceOrCreate({
  292.     		id: 'SEpreviewStyles',
  293. 			tag: 'style', parent: pvDoc.head, className: 'SEpreview-reuse',
  294. 			innerHTML: preview.stylesOverride,
  295. 		});
  296. 		$replaceOrCreate($$('style', doc).map(e => ({
  297. 			id: 'SEpreview' + e.innerHTML.replace(/\W+/g, '').length,
  298. 			tag: 'style', before: SEpreviewStyles, className: 'SEpreview-reuse',
  299. 			innerHTML: e.innerHTML,
  300. 		})));
  301. 		return onStyleSheetsReady({
  302. 			doc: pvDoc,
  303. 			urls: $$('link[rel="stylesheet"]', doc).map(e => e.href),
  304. 			onBeforeRequest: preview.frame.style.opacity != '1' ? null : () => {
  305. 				preview.frame.style.transition = 'border-color .5s ease-in-out';
  306. 				$on('transitionend', preview.frame, () => preview.frame.style.transition = '', {once: true});
  307. 			},
  308. 		}).then(els => {
  309. 			els.forEach(e => e.className = 'SEpreview-reuse');
  310. 		});
  311. 	}
  312.  
  313. 	function render() {
  314. 		pvDoc.body.setAttribute('SEpreview-type', preview.frame.getAttribute('SEpreview-type'));
  315.  
  316. 		$replaceOrCreate([{
  317. 		// base
  318. 			id: 'SEpreview-base', tag: 'base',
  319. 			parent: pvDoc.head,
  320.             href: $('base', doc).href,
  321. 		}, {
  322. 		// title
  323. 			id: 'SEpreview-title', tag: 'a',
  324. 			parent: pvDoc.body, className: 'SEpreviewable',
  325. 			href: finalUrlOfQuestion,
  326. 			textContent: title,
  327. 		}, {
  328. 		// close button
  329. 			id: 'SEpreview-close',
  330. 			parent: pvDoc.body,
  331. 			title: 'Or press Esc key while the preview is focused (also when just shown)',
  332. 		}, {
  333. 		// vote count, date, views#
  334. 			id: 'SEpreview-meta',
  335. 			parent: pvDoc.body,
  336. 			innerHTML: [
  337. 				$text('.vote-count-post', post.closest('table')).replace(/(-?)(\d+)/,
  338. 					(s, sign, v) => s == '0' ? '' : `<b>${s}</b> vote${+v > 1 ? 's' : ''}, `),
  339. 				isQuestion
  340. 					? $$('#qinfo tr', doc)
  341. 						.map(row => $$('.label-key', row).map($text).join(' '))
  342. 						.join(', ').replace(/^((.+?) (.+?), .+?), .+? \3$/, '$1')
  343. 					: [...$$('.user-action-time', post.closest('.answer'))]
  344. 						.reverse().map($text).join(', ')
  345. 			].join('')
  346. 		}, {
  347. 		// content wrapper
  348. 			id: 'SEpreview-body',
  349. 			parent: pvDoc.body,
  350. 			className: isDeleted ? 'deleted-answer' : '',
  351. 			children: [status, post.parentElement, comments, commentsShowLink],
  352. 		}]);
  353.  
  354. 		// delinkify/remove non-functional items in post-menu
  355. 		$$remove('.short-link, .flag-post-link', pvDoc);
  356. 		$$('.post-menu a:not(.edit-post)', pvDoc).forEach(a => {
  357. 			if (a.children.length)
  358. 				a.outerHTML = `<span>${a.innerHTML}</span>`;
  359. 			else
  360. 				a.remove();
  361. 		});
  362.  
  363. 		// add a timeline link
  364. 		if (isQuestion)
  365. 			$('.post-menu', pvDoc).insertAdjacentHTML('beforeend',
  366. 				'<span class="lsep">|</span>' +
  367. 				`<a href="/posts/${new URL(finalUrl).pathname.match(/\d+/)[0]}/timeline">timeline</a>`);
  368.  
  369. 		// prettify code blocks
  370. 		const codeBlocks = $$('pre code', pvDoc);
  371. 		if (codeBlocks.length) {
  372. 			codeBlocks.forEach(e => e.parentElement.classList.add('prettyprint'));
  373. 			if (!pvWin.StackExchange) {
  374. 				pvWin.StackExchange = {};
  375. 				let script = $scriptIn(pvDoc.head);
  376. 				script.text = 'StackExchange = {}';
  377. 				script = $scriptIn(pvDoc.head);
  378. 				script.src = 'https://cdn.sstatic.net/Js/prettify-full.en.js';
  379. 				script.setAttribute('onload', 'prettyPrint()');
  380. 			} else
  381. 				$scriptIn(pvDoc.body).text = 'prettyPrint()';
  382. 		}
  383.  
  384. 		// render bottom shelf
  385. 		if (hasAnswers) {
  386. 			$replaceOrCreate({
  387. 				id: 'SEpreview-answers',
  388. 				parent: pvDoc.body,
  389. 				innerHTML: answers.map(renderShelfAnswer).join(' '),
  390. 			});
  391. 		} else
  392. 			$$remove('#SEpreview-answers', pvDoc);
  393.  
  394. 		// cleanup leftovers from previously displayed post and foreign elements not injected by us
  395. 		$$('style, link, body script, html > *:not(head):not(body), .post-menu .lsep + .lsep', pvDoc).forEach(e => {
  396. 			if (e.classList.contains('SEpreview-reuse'))
  397. 				e.classList.remove('SEpreview-reuse');
  398. 			else
  399. 				e.remove();
  400. 		});
  401. 	}
  402.  
  403. 	function renderShelfAnswer(e) {
  404. 		const shortUrl = $('.short-link', e).href.replace(/(\d+)\/\d+/, '$1');
  405. 		const extraClasses = (e.matches(postId) ? ' SEpreviewed' : '') +
  406. 		      (e.matches('.deleted-answer') ? ' deleted-answer' : '') +
  407. 			  ($('.vote-accepted-on', e) ? ' SEpreview-accepted' : '');
  408. 		const author = $('.post-signature:last-child', e);
  409. 		const title = $text('.user-details a', author) + ' (rep ' +
  410. 			  $text('.reputation-score', author) + ')\n' +
  411. 			  $text('.user-action-time', author);
  412. 		const gravatar = $('img, .anonymous-gravatar, .community-wiki', author);
  413. 		return (
  414. 			`<a href="${shortUrl}" title="${title}" class="SEpreviewable${extraClasses}">` +
  415. 				$text('.vote-count-post', e).replace(/^0$/, '&nbsp;') + ' ' +
  416. 				(!gravatar ? '' : gravatar.src ? `<img src="${gravatar.src}">` : gravatar.outerHTML) +
  417. 			'</a>');
  418. 	}
  419.  
  420. 	function show() {
  421. 		pvDoc.onmouseover = lockScroll.attach;
  422. 		pvDoc.onclick = onClick;
  423. 		pvDoc.onkeydown = e => { if (!hasKeyModifiers(e) && e.keyCode == 27) hide() };
  424. 		pvWin.onmessage = e => { if (e.data == 'SEpreview-hidden') hide({fade: true}) };
  425.  
  426. 		markHoverableUsers(pvDoc);
  427. 		preview.killInvaders.start();
  428.  
  429. 		$('#SEpreview-body', pvDoc).scrollTop = 0;
  430. 		preview.frame.style.opacity = '1';
  431. 		preview.frame.focus();
  432. 	}
  433.  
  434. 	function hide({fade = false} = {}) {
  435. 		releaseLinkListeners();
  436. 		releasePreviewListeners();
  437. 		const cleanup = () => preview.frame.style.opacity == '0' && $removeChildren(pvDoc.body);
  438. 		if (fade)
  439. 			fadeOut(preview.frame).then(cleanup);
  440. 		else {
  441. 			preview.frame.style.opacity = '0';
  442. 			preview.frame.style.display = 'none';
  443. 			cleanup();
  444. 		}
  445. 	}
  446.  
  447. 	function releasePreviewListeners(e) {
  448. 		pvWin.onmessage = null;
  449. 		pvDoc.onmouseover = null;
  450. 		pvDoc.onclick = null;
  451. 		pvDoc.onkeydown = null;
  452. 	}
  453.  
  454. 	function onClick(e) {
  455. 		if (e.target.id == 'SEpreview-close')
  456. 			return hide();
  457.  
  458. 		const link = e.target.closest('a');
  459. 		if (!link)
  460. 			return;
  461.  
  462. 		if (link.matches('.js-show-link.comments-link')) {
  463. 			fadeOut(link, 0.5);
  464. 			loadComments();
  465. 			return e.preventDefault();
  466. 		}
  467.  
  468. 		if (e.button || hasKeyModifiers(e) || !link.matches('.SEpreviewable'))
  469. 			return (link.target = '_blank');
  470.  
  471. 		e.preventDefault();
  472.  
  473. 		if (link.id == 'SEpreview-title')
  474. 			showPreview({doc, finalUrl: finalUrlOfQuestion});
  475. 		else if (link.matches('#SEpreview-answers a'))
  476. 			showPreview({doc, finalUrl: finalUrlOfQuestion + '/' + link.pathname.match(/\/(\d+)/)[1]});
  477. 		else
  478. 			downloadPreview(link);
  479. 	}
  480.  
  481. 	function loadComments() {
  482. 		const url = new URL(finalUrl).origin + '/posts/' + comments.id.match(/\d+/)[0] + '/comments';
  483. 		doXHR({url}).then(r => {
  484. 			const tbody = $(`#${comments.id} tbody`, pvDoc);
  485. 			const oldIds = new Set([...tbody.rows].map(e => e.id));
  486. 			tbody.innerHTML = r.responseText;
  487. 			tbody.closest('.comments').style.display = 'block';
  488. 			for (let tr of tbody.rows)
  489. 				if (!oldIds.has(tr.id))
  490. 					tr.classList.add('new-comment-highlight');
  491. 			markPreviewableLinks(tbody);
  492. 			markHoverableUsers(tbody);
  493. 		});
  494. 	}
  495.  
  496. 	function loadUserCard(e, ready) {
  497. 		if (ready !== true)
  498. 			return setTimeout(loadUserCard, PREVIEW_DELAY * 2, e, true);
  499. 		const link = e.target.closest('a');
  500. 		if (!link.matches(':hover'))
  501. 			return;
  502. 		let timer;
  503. 		let userCard = link.nextElementSibling;
  504. 		if (userCard && userCard.matches('.SEpreview-userCard'))
  505. 			return fadeInUserCard();
  506. 		const url = link.origin + '/users/user-info/' + link.pathname.match(/\d+/)[0];
  507.  
  508. 		Promise.resolve(
  509. 			readCache(url) ||
  510. 			doXHR({url}).then(r => {
  511. 				writeCache({url, html: r.responseText, cacheDuration: CACHE_DURATION * 100});
  512. 				return {html: r.responseText};
  513. 			})
  514. 		).then(renderUserCard);
  515.  
  516. 		function renderUserCard({html}) {
  517. 			const linkBounds = link.getBoundingClientRect();
  518. 			const wrapperBounds = $('#SEpreview-body', pvDoc).getBoundingClientRect();
  519. 			userCard = $replaceOrCreate({id: 'user-menu-tmp', className: 'SEpreview-userCard', innerHTML: html, after: link});
  520. 			userCard.style.left = Math.min(linkBounds.left - 20, pvWin.innerWidth - 350) + 'px';
  521. 			if (linkBounds.bottom + 100 > wrapperBounds.bottom)
  522. 				userCard.style.marginTop = '-5rem';
  523. 			userCard.onmouseout = e => {
  524. 				if (e.target != userCard || userCard.contains(e.relatedTarget))
  525. 					if (e.relatedTarget) // null if mouse is outside the preview
  526. 						return;
  527. 				fadeOut(userCard);
  528. 				clearTimeout(timer);
  529. 				timer = 0;
  530. 			};
  531. 			fadeInUserCard();
  532. 		}
  533.  
  534. 		function fadeInUserCard() {
  535. 			if (userCard.id != 'user-menu') {
  536. 				$$('#user-menu', pvDoc).forEach(e => e.id = e.style.display = '' );
  537. 				userCard.id = 'user-menu';
  538. 			}
  539. 			userCard.style.opacity = '0';
  540. 			userCard.style.display = 'block';
  541. 			timer = setTimeout(() => timer && (userCard.style.opacity = '1'));
  542. 		}
  543. 	}
  544. }
  545.  
  546. function getCacheableUrl(url) {
  547. 	// strips queries and hashes and anything after the main part https://site/questions/####/title/
  548. 	return url
  549. 		.replace(/(\/q(?:uestions)?\/\d+\/[^\/]+).*/, '$1')
  550. 		.replace(/(\/a(?:nswers)?\/\d+).*/, '$1')
  551. 		.replace(/[?#].*$/, '');
  552. }
  553.  
  554. function readCache(url) {
  555. 	keyUrl = getCacheableUrl(url);
  556. 	const meta = (localStorage[keyUrl] || '').split('\t');
  557. 	const expired = +meta[0] < Date.now();
  558. 	const finalUrl = meta[1] || url;
  559. 	const keyFinalUrl = meta[1] ? getCacheableUrl(finalUrl) : keyUrl;
  560. 	return !expired && {
  561. 		finalUrl,
  562. 		html: LZString.decompressFromUTF16(localStorage[keyFinalUrl + '\thtml']),
  563. 	};
  564. }
  565.  
  566. function writeCache({url, finalUrl, html, cacheDuration = CACHE_DURATION, cleanupRetry}) {
  567. 	// keyUrl=expires
  568. 	// redirected keyUrl=expires+finalUrl, and an additional entry keyFinalUrl=expires is created
  569. 	// keyFinalUrl\thtml=html
  570. 	cacheDuration = Math.max(CACHE_DURATION, Math.min(0xDEADBEEF, Math.floor(cacheDuration)));
  571. 	finalUrl = (finalUrl || url).replace(/[?#].*/, '');
  572. 	const keyUrl = getCacheableUrl(url);
  573. 	const keyFinalUrl = getCacheableUrl(finalUrl);
  574. 	const expires = Date.now() + cacheDuration;
  575. 	const lz = LZString.compressToUTF16(html);
  576. 	if (!tryCatch(() => localStorage[keyFinalUrl + '\thtml'] = lz)) {
  577. 		if (cleanupRetry)
  578. 			return error('localStorage write error');
  579. 		cleanupCache({aggressive: true});
  580. 		setIimeout(writeCache, 0, {url, finalUrl, html, cacheDuration, cleanupRetry: true});
  581. 	}
  582. 	localStorage[keyFinalUrl] = expires;
  583. 	if (keyUrl != keyFinalUrl)
  584. 		localStorage[keyUrl] = expires + '\t' + finalUrl;
  585. 	setTimeout(() => {
  586. 		[keyUrl, keyFinalUrl, keyFinalUrl + '\thtml'].forEach(e => localStorage.removeItem(e));
  587. 	}, cacheDuration + 1000);
  588. }
  589.  
  590. function cleanupCache({aggressive = false} = {}) {
  591. 	Object.keys(localStorage).forEach(k => {
  592. 		if (k.match(/^https?:\/\/[^\t]+$/)) {
  593. 			let meta = (localStorage[k] || '').split('\t');
  594. 			if (+meta[0] > Date.now() && !aggressive)
  595. 				return;
  596. 			if (meta[1])
  597. 				localStorage.removeItem(meta[1]);
  598. 			localStorage.removeItem(`${meta[1] || k}\thtml`);
  599. 			localStorage.removeItem(k);
  600. 		}
  601. 	});
  602. }
  603.  
  604. function onFrameReady(frame) {
  605. 	if (frame.contentDocument.readyState == 'complete')
  606. 		return Promise.resolve();
  607. 	else
  608. 		return new Promise(resolve => {
  609. 			$on('load', frame, function onLoad() {
  610. 				$off('load', frame, onLoad);
  611. 				resolve();
  612. 			});
  613. 		});
  614. }
  615.  
  616. function onStyleSheetsReady({urls, doc = document, onBeforeRequest = null}) {
  617. 	return Promise.all(
  618. 		urls.map(url => $(`link[href="${url}"]`, doc) || new Promise(resolve => {
  619. 			if (typeof onBeforeRequest == 'function')
  620. 				onBeforeRequest(url);
  621. 			doXHR({url}).then(() => {
  622. 				const sheetElement = $replaceOrCreate({tag: 'link', href: url, rel: 'stylesheet', parent: doc.head});
  623. 				const timeout = setTimeout(doResolve, 100);
  624. 				sheetElement.onload = doResolve;
  625. 				function doResolve() {
  626. 					sheetElement.onload = null;
  627. 					clearTimeout(timeout);
  628. 					resolve(sheetElement);
  629. 				}
  630. 			});
  631. 		}))
  632. 	);
  633. }
  634.  
  635. function getURLregexForMatchedSites() {
  636. 	const sites = 'https?://(\\w*\\.)*(' + GM_info.script.matches.map(
  637. 		m => m.match(/^.*?\/\/\W*(\w.*?)\//)[1].replace(/\./g, '\\.')).join('|') + ')/';
  638. 	return {
  639. 		full: new RegExp(sites + '(questions|q|a|posts\/comments)/\\d+'),
  640. 		siteOnly: new RegExp(sites),
  641. 	};
  642. }
  643.  
  644. function isLinkPreviewable(link) {
  645. 	if (!rxPreviewable.test(link.href) || link.matches('.short-link'))
  646. 		return false;
  647. 	const inPreview = preview.frame && link.ownerDocument == preview.frame.contentDocument;
  648. 	const pageUrls = inPreview ? getPageBaseUrls(preview.link.href) : thisPageUrls;
  649. 	const url = httpsUrl(link.href);
  650. 	return url.indexOf(pageUrls.base) &&
  651. 		   url.indexOf(pageUrls.short);
  652. }
  653.  
  654. function getPageBaseUrls(url) {
  655. 	const base = httpsUrl((url.match(rxPreviewable) || [])[0]);
  656. 	return base ? {
  657. 		base,
  658. 		short: base.replace('/questions/', '/q/'),
  659. 	} : {};
  660. }
  661.  
  662. function httpsUrl(url) {
  663. 	return (url || '').replace(/^http:/, 'https:');
  664. }
  665.  
  666. function doXHR(options) {
  667. 	options = Object.assign({method: 'GET'}, options);
  668. 	const useHttpUrl = () => options.url = options.url.replace(/^https/, 'http');
  669. 	const hostname = new URL(options.url).hostname;
  670. 	if (xhrNoSSL.has(hostname))
  671. 		useHttpUrl();
  672. 	else if (options.url.startsWith('https')) {
  673. 		options.onerror = e => {
  674. 			useHttpUrl();
  675. 			xhrNoSSL.add(hostname);
  676. 			xhr = GM_xmlhttpRequest(options);
  677. 		};
  678. 	}
  679. 	if (options.onload)
  680. 		return (xhr = GM_xmlhttpRequest(options));
  681. 	else
  682. 		return new Promise(resolve => {
  683. 			xhr = GM_xmlhttpRequest(Object.assign(options, {onload: resolve}));
  684. 		});
  685. }
  686.  
  687. function makeResizable() {
  688. 	let heightOnClick;
  689. 	const pvDoc = preview.frame.contentDocument;
  690. 	const topBorderHeight = (preview.frame.offsetHeight - preview.frame.clientHeight) / 2;
  691. 	setHeight(GM_getValue('height', innerHeight / 3) |0);
  692.  
  693. 	// mouseover in the main page is fired only on the border of the iframe
  694. 	$on('mouseover', preview.frame, onOverAttach);
  695. 	$on('message', preview.frame.contentWindow, e => {
  696. 		if (e.data != 'SEpreview-hidden')
  697. 			return;
  698. 		if (heightOnClick) {
  699. 			releaseResizeListeners();
  700. 			setHeight(heightOnClick);
  701. 		}
  702. 		if (preview.frame.style.cursor)
  703. 			onOutDetach();
  704. 	});
  705.  
  706. 	function setCursorStyle(e) {
  707. 		return (preview.frame.style.cursor = e.offsetY <= 0 ? 's-resize' : '');
  708. 	}
  709.  
  710. 	function onOverAttach(e) {
  711. 		setCursorStyle(e);
  712. 		$on('mouseout', preview.frame, onOutDetach);
  713. 		$on('mousemove', preview.frame, setCursorStyle);
  714. 		$on('mousedown', onDownStartResize);
  715. 	}
  716.  
  717. 	function onOutDetach(e) {
  718. 		if (!e || !e.relatedTarget || !pvDoc.contains(e.relatedTarget)) {
  719. 			$off('mouseout', preview.frame, onOutDetach);
  720. 			$off('mousemove', preview.frame, setCursorStyle);
  721. 			$off('mousedown', onDownStartResize);
  722. 			preview.frame.style.cursor = '';
  723. 		}
  724. 	}
  725.  
  726. 	function onDownStartResize(e) {
  727. 		if (!preview.frame.style.cursor)
  728. 			return;
  729. 		heightOnClick = preview.frame.clientHeight;
  730.  
  731. 		$off('mouseover', preview.frame, onOverAttach);
  732. 		$off('mousemove', preview.frame, setCursorStyle);
  733. 		$off('mouseout', preview.frame, onOutDetach);
  734.  
  735. 		document.documentElement.style.cursor = 's-resize';
  736. 		document.body.style.cssText += ';pointer-events: none!important';
  737. 		$on('mousemove', onMoveResize);
  738. 		$on('mouseup',  onUpConfirm);
  739. 	}
  740.  
  741. 	function onMoveResize(e) {
  742. 		setHeight(innerHeight - topBorderHeight - e.clientY);
  743. 		getSelection().removeAllRanges();
  744. 		preview.frame.contentWindow.getSelection().removeAllRanges();
  745. 	}
  746.  
  747. 	function onUpConfirm(e) {
  748. 		GM_setValue('height', pvDoc.body.clientHeight);
  749. 		releaseResizeListeners(e);
  750. 	}
  751.  
  752. 	function releaseResizeListeners() {
  753. 		$off('mouseup', releaseResizeListeners);
  754. 		$off('mousemove', onMoveResize);
  755.  
  756. 		$on('mouseover', preview.frame, onOverAttach);
  757. 		onOverAttach({});
  758.  
  759. 		document.body.style.pointerEvents = '';
  760. 		document.documentElement.style.cursor = '';
  761. 		heightOnClick = 0;
  762. 	}
  763. }
  764.  
  765. function setHeight(height) {
  766. 	const currentHeight = preview.frame.clientHeight;
  767. 	const borderHeight = preview.frame.offsetHeight - currentHeight;
  768. 	const newHeight = Math.max(MIN_HEIGHT, Math.min(innerHeight - borderHeight, height));
  769. 	if (newHeight != currentHeight)
  770. 		preview.frame.style.height = newHeight + 'px';
  771. }
  772.  
  773. function $(selector, node = document) {
  774. 	return node.querySelector(selector);
  775. }
  776.  
  777. function $$(selector, node = document) {
  778. 	return node.querySelectorAll(selector);
  779. }
  780.  
  781. function $text(selector, node = document) {
  782. 	const e = typeof selector == 'string' ? node.querySelector(selector) : selector;
  783. 	return e ? e.textContent.trim() : '';
  784. }
  785.  
  786. function $$remove(selector, node = document) {
  787. 	node.querySelectorAll(selector).forEach(e => e.remove());
  788. }
  789.  
  790. function $appendChildren(newParent, elements) {
  791. 	const doc = newParent.ownerDocument;
  792. 	const fragment = doc.createDocumentFragment();
  793. 	for (let e of elements)
  794. 		if (e)
  795. 		   fragment.appendChild(e.ownerDocument == doc ? e : doc.importNode(e, true));
  796. 	newParent.appendChild(fragment);
  797. }
  798.  
  799. function $removeChildren(el) {
  800. 	if (el.children.length)
  801. 		el.innerHTML = ''; // the fastest as per https://jsperf.com/innerhtml-vs-removechild/256
  802. }
  803.  
  804. function $replaceOrCreate(options) {
  805. 	if (typeof options.map == 'function')
  806. 		return options.map($replaceOrCreate);
  807.     const doc = (options.parent || options.before || options.after).ownerDocument;
  808. 	const el = doc.getElementById(options.id) || doc.createElement(options.tag || 'div');
  809. 	for (let key of Object.keys(options)) {
  810. 		const value = options[key];
  811. 		switch (key) {
  812. 			case 'tag':
  813. 			case 'parent':
  814. 			case 'before':
  815. 			case 'after':
  816. 				break;
  817. 			case 'dataset':
  818. 				for (let dataAttr of Object.keys(value))
  819. 					if (el.dataset[dataAttr] != value[dataAttr])
  820. 						el.dataset[dataAttr] = value[dataAttr];
  821. 				break;
  822. 			case 'children':
  823. 				$removeChildren(el);
  824. 				$appendChildren(el, options[key]);
  825. 				break;
  826. 			default:
  827. 				if (key in el && el[key] != value)
  828. 					el[key] = value;
  829. 		}
  830. 	}
  831. 	if (!el.parentElement)
  832.     	(options.parent || (options.before || options.after).parentElement)
  833. 			.insertBefore(el, options.before || (options.after && options.after.nextElementSibling));
  834. 	return el;
  835. }
  836.  
  837. function $scriptIn(element) {
  838. 	return element.appendChild(element.ownerDocument.createElement('script'));
  839. }
  840.  
  841. function $on(eventName, ...args) {
  842. // eventName, selector, node, callback, options
  843. // eventName, selector, callback, options
  844. // eventName, node, callback, options
  845. // eventName, callback, options
  846. 	let i = 0;
  847. 	const selector = typeof args[i] == 'string' ? args[i++] : null;
  848. 	const node = args[i].nodeType ? args[i++] : document;
  849. 	const callback = args[i++];
  850. 	const options = args[i];
  851.  
  852. 	const actualNode = selector ? node.querySelector(selector) : node;
  853. 	const method = this == 'removeEventListener' ? this : 'addEventListener';
  854. 	actualNode[method](eventName, callback, options);
  855. }
  856.  
  857. function $off() {
  858. 	$on.apply('removeEventListener', arguments);
  859. }
  860.  
  861. function hasKeyModifiers(e) {
  862. 	return e.ctrlKey || e.altKey || e.shiftKey || e.metaKey;
  863. }
  864.  
  865. function log(...args) {
  866. 	console.log(GM_info.script.name, ...args);
  867. }
  868.  
  869. function error(...args) {
  870. 	console.error(GM_info.script.name, ...args);
  871. }
  872.  
  873. function tryCatch(fn) {
  874. 	try { return fn() }
  875. 	catch(e) {}
  876. }
  877.  
  878. function initPolyfills(context = window) {
  879. 	for (let method of ['forEach', 'filter', 'map', 'every', 'some', context.Symbol.iterator])
  880. 		if (!context.NodeList.prototype[method])
  881. 			context.NodeList.prototype[method] = context.Array.prototype[method];
  882. }
  883.  
  884. function initStyles() {
  885. 	GM_addStyle(`
  886. 		#SEpreview {
  887. 			all: unset;
  888. 			box-sizing: content-box;
  889. 			width: 720px; /* 660px + 30px + 30px */
  890. 			height: 33%;
  891. 			min-height: ${MIN_HEIGHT}px;
  892. 			position: fixed;
  893. 			opacity: 0;
  894. 			transition: opacity .25s cubic-bezier(.88,.02,.92,.66);
  895. 			right: 0;
  896. 			bottom: 0;
  897. 			padding: 0;
  898. 			margin: 0;
  899. 			background: white;
  900. 			box-shadow: 0 0 100px rgba(0,0,0,0.5);
  901. 			z-index: 999999;
  902. 			border-width: 8px;
  903. 			border-style: solid;
  904. 			border-color: transparent;
  905. 		}
  906. 		#SEpreview[SEpreview-type="question"].SEpreview-hasAnswers {
  907. 			border-image: linear-gradient(rgb(${COLORS.question.backRGB}) 66%, rgb(${COLORS.answer.backRGB})) 1 1;
  908. 		}
  909. 	`
  910. 	+ Object.keys(COLORS).map(s => `
  911. 		#SEpreview[SEpreview-type="${s}"] {
  912. 			border-color: rgb(${COLORS[s].backRGB});
  913. 		}
  914. 	`).join('')
  915. 	);
  916.  
  917. 	preview.stylesOverride = `
  918. 		html, body {
  919. 			min-width: unset!important;
  920. 			box-shadow: none!important;
  921. 			padding: 0!important;
  922. 			margin: 0!important;
  923. 			background: unset!important;;
  924. 		}
  925. 		body {
  926. 			display: flex;
  927. 			flex-direction: column;
  928. 			height: 100vh;
  929. 		}
  930. 		#SEpreview-body a.SEpreviewable {
  931. 			text-decoration: underline !important;
  932. 		}
  933. 		#SEpreview-title {
  934. 			all: unset;
  935. 			display: block;
  936. 			padding: 20px 30px;
  937. 			font-weight: bold;
  938. 			font-size: 18px;
  939. 			line-height: 1.2;
  940. 			cursor: pointer;
  941. 		}
  942. 		#SEpreview-title:hover {
  943. 			text-decoration: underline;
  944. 		}
  945. 		#SEpreview-meta {
  946. 			position: absolute;
  947. 			top: .5ex;
  948. 			left: 30px;
  949. 			opacity: 0.5;
  950. 		}
  951. 		#SEpreview-title:hover + #SEpreview-meta {
  952. 			opacity: 1.0;
  953. 		}
  954.  
  955. 		#SEpreview-close {
  956. 			position: absolute;
  957. 			top: 0;
  958. 			right: 0;
  959. 			flex: none;
  960. 			cursor: pointer;
  961. 			padding: .5ex 1ex;
  962. 		}
  963. 		#SEpreview-close:after {
  964. 			content: "x"; }
  965. 		#SEpreview-close:active {
  966. 			background-color: rgba(0,0,0,.1); }
  967. 		#SEpreview-close:hover {
  968. 			background-color: rgba(0,0,0,.05); }
  969.  
  970. 		#SEpreview-body {
  971. 			position: relative;
  972. 			padding: 30px!important;
  973. 			overflow: auto;
  974. 			flex-grow: 2;
  975. 		}
  976. 		#SEpreview-body > .question-status {
  977. 			margin: -30px -30px 30px;
  978. 			padding-left: 30px;
  979. 		}
  980. 		#SEpreview-body .question-originals-of-duplicate {
  981. 			margin: -30px -30px 30px;
  982. 			padding: 15px 30px;
  983. 		}
  984. 		#SEpreview-body > .question-status h2 {
  985. 			font-weight: normal;
  986. 		}
  987.  
  988. 		#SEpreview-answers {
  989. 			all: unset;
  990. 			display: block;
  991. 			padding: 10px 10px 10px 30px;
  992. 			font-weight: bold;
  993. 			line-height: 1.0;
  994. 			border-top: 4px solid rgba(${COLORS.answer.backRGB}, 0.37);
  995. 			background-color: rgba(${COLORS.answer.backRGB}, 0.37);
  996. 			color: ${COLORS.answer.fore};
  997. 			word-break: break-word;
  998. 		}
  999. 		#SEpreview-answers:before {
  1000. 			content: "Answers:";
  1001. 			margin-right: 1ex;
  1002. 			font-size: 20px;
  1003. 			line-height: 48px;
  1004. 		}
  1005. 		#SEpreview-answers a {
  1006. 			color: ${COLORS.answer.fore};
  1007. 			text-decoration: none;
  1008. 			font-size: 11px;
  1009. 			font-family: monospace;
  1010. 			width: 32px;
  1011. 			display: inline-block;
  1012. 			vertical-align: top;
  1013. 			margin: 0 1ex 1ex  0;
  1014. 		}
  1015. 		#SEpreview-answers img {
  1016. 			width: 32px;
  1017. 			height: 32px;
  1018. 		}
  1019. 		.SEpreview-accepted {
  1020. 			position: relative;
  1021. 		}
  1022. 		.SEpreview-accepted:after {
  1023. 			content: "✔";
  1024. 			position: absolute;
  1025. 			display: block;
  1026. 			top: 1.3ex;
  1027. 			right: -0.7ex;
  1028. 			font-size: 32px;
  1029. 			color: #4bff2c;
  1030. 			text-shadow: 1px 2px 2px rgba(0,0,0,0.5);
  1031. 		}
  1032. 		#SEpreview-answers a.deleted-answer {
  1033. 			color: ${COLORS.deleted.fore};
  1034. 			background: transparent;
  1035. 			opacity: 0.25;
  1036. 		}
  1037. 		#SEpreview-answers a.deleted-answer:hover {
  1038. 			opacity: 1.0;
  1039. 		}
  1040. 		#SEpreview-answers a:hover:not(.SEpreviewed) {
  1041. 			text-decoration: underline;
  1042. 		}
  1043. 		#SEpreview-answers a.SEpreviewed {
  1044. 			background-color: ${COLORS.answer.fore};
  1045. 			color: ${COLORS.answer.foreInv};
  1046. 			position: relative;
  1047. 		}
  1048. 		#SEpreview-answers a.SEpreviewed:after {
  1049. 			display: block;
  1050. 			content: " ";
  1051. 			position: absolute;
  1052. 			left: -4px;
  1053. 			top: -4px;
  1054. 			right: -4px;
  1055. 			bottom: -4px;
  1056. 			border: 4px solid ${COLORS.answer.fore};
  1057. 		}
  1058.  
  1059. 		#SEpreview-body .comment-edit,
  1060. 		#SEpreview-body .delete-tag,
  1061. 		#SEpreview-body .comment-actions td:last-child {
  1062. 			display: none;
  1063. 		}
  1064. 		#SEpreview-body .comments {
  1065. 			border-top: none;
  1066. 		}
  1067. 		#SEpreview-body .comments tr:last-child td {
  1068. 			border-bottom: none;
  1069. 		}
  1070. 		#SEpreview-body .comments .new-comment-highlight {
  1071. 			-webkit-animation: highlight 9s cubic-bezier(0,.8,.37,.88);
  1072. 			-moz-animation: highlight 9s cubic-bezier(0,.8,.37,.88);
  1073. 			animation: highlight 9s cubic-bezier(0,.8,.37,.88);
  1074. 		}
  1075.  
  1076. 		#SEpreview-body .post-menu > span {
  1077. 			opacity: .35;
  1078. 		}
  1079. 		#SEpreview-body #user-menu {
  1080. 			position: absolute;
  1081. 		}
  1082. 		.SEpreview-userCard {
  1083. 			position: absolute;
  1084. 			display: none;
  1085. 			transition: opacity .25s cubic-bezier(.88,.02,.92,.66) .5s;
  1086. 			margin-top: -3rem;
  1087. 		}
  1088.  
  1089. 		#SEpreview-body .wmd-preview a:not(.post-tag),
  1090. 		#SEpreview-body .post-text a:not(.post-tag),
  1091. 		#SEpreview-body .comment-copy a:not(.post-tag) {
  1092. 			border-bottom: none;
  1093. 		}
  1094.  
  1095. 		@-webkit-keyframes highlight {
  1096. 			from {background-color: #ffcf78}
  1097. 			to   {background-color: none}
  1098. 		}
  1099. 	`
  1100. 	+ Object.keys(COLORS).map(s => `
  1101. 		body[SEpreview-type="${s}"] #SEpreview-title {
  1102. 			background-color: rgba(${COLORS[s].backRGB}, 0.37);
  1103. 			color: ${COLORS[s].fore};
  1104. 		}
  1105. 		body[SEpreview-type="${s}"] #SEpreview-body::-webkit-scrollbar {
  1106. 			background-color: rgba(${COLORS[s].backRGB}, 0.1); }
  1107. 		body[SEpreview-type="${s}"] #SEpreview-body::-webkit-scrollbar-thumb {
  1108. 			background-color: rgba(${COLORS[s].backRGB}, 0.2); }
  1109. 		body[SEpreview-type="${s}"] #SEpreview-body::-webkit-scrollbar-thumb:hover {
  1110. 			background-color: rgba(${COLORS[s].backRGB}, 0.3); }
  1111. 		body[SEpreview-type="${s}"] #SEpreview-body::-webkit-scrollbar-thumb:active {
  1112. 			background-color: rgba(${COLORS[s].backRGB}, 0.75); }
  1113. 	`).join('')
  1114. 	+ ['deleted', 'closed'].map(s => `
  1115. 		body[SEpreview-type="${s}"] #SEpreview-answers {
  1116. 			border-top-color: rgba(${COLORS[s].backRGB}, 0.37);
  1117. 			background-color: rgba(${COLORS[s].backRGB}, 0.37);
  1118. 			color: ${COLORS[s].fore};
  1119. 		}
  1120. 		body[SEpreview-type="${s}"] #SEpreview-answers a.SEpreviewed {
  1121. 			background-color: ${COLORS[s].fore};
  1122. 			color: ${COLORS[s].foreInv};
  1123. 		}
  1124. 		body[SEpreview-type="${s}"] #SEpreview-answers a.SEpreviewed:after {
  1125. 			border-color: ${COLORS[s].fore};
  1126. 		}
  1127. 	`).join('');
  1128. }