☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

目前為 2024-03-26 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name        Mouseover Popup Image Viewer
  3. // @namespace   https://github.com/tophf
  4. // @description Shows images and videos behind links and thumbnails.
  5. //
  6. // @include     *
  7. // @run-at      document-start
  8. //
  9. // @grant       GM_addElement
  10. // @grant       GM_download
  11. // @grant       GM_getValue
  12. // @grant       GM_openInTab
  13. // @grant       GM_registerMenuCommand
  14. // @grant       GM_unregisterMenuCommand
  15. // @grant       GM_setClipboard
  16. // @grant       GM_setValue
  17. // @grant       GM_xmlhttpRequest
  18. //
  19. // @grant       GM.getValue
  20. // @grant       GM.openInTab
  21. // @grant       GM.registerMenuCommand
  22. // @grant       GM.unregisterMenuCommand
  23. // @grant       GM.setClipboard
  24. // @grant       GM.setValue
  25. // @grant       GM.xmlHttpRequest
  26. //
  27. // @version     1.2.38
  28. // @author      tophf
  29. //
  30. // @original-version 2017.9.29
  31. // @original-author  kuehlschrank
  32. //
  33. // @connect     *
  34. // CSP check:
  35. // @connect     self
  36. // rule installer in config dialog:
  37. // @connect     github.com
  38. // big/trusted hostings for the built-in rules with "q":
  39. // @connect     deviantart.com
  40. // @connect     facebook.com
  41. // @connect     fbcdn.com
  42. // @connect     flickr.com
  43. // @connect     gfycat.com
  44. // @connect     googleusercontent.com
  45. // @connect     gyazo.com
  46. // @connect     imgur.com
  47. // @connect     instagr.am
  48. // @connect     instagram.com
  49. // @connect     prnt.sc
  50. // @connect     prntscr.com
  51. // @connect     user-images.githubusercontent.com
  52. //
  53. // @supportURL  https://github.com/tophf/mpiv/issues
  54. // @icon        https://raw.githubusercontent.com/tophf/mpiv/master/icon.png
  55. // ==/UserScript==
  56.  
  57. 'use strict';
  58.  
  59. //#region Globals
  60.  
  61. /** @type mpiv.Config */
  62. let cfg;
  63. /** @type mpiv.AppInfo */
  64. let ai = {rule: {}};
  65. /** @type Element */
  66. let elSetup;
  67. let nonce;
  68.  
  69. const doc = document;
  70. const hostname = location.hostname;
  71. const dotDomain = '.' + hostname;
  72. const isGoogleDomain = /(^|\.)google(\.com?)?(\.\w+)?$/.test(hostname);
  73. const isGoogleImages = isGoogleDomain && /[&?]tbm=isch(&|$)/.test(location.search);
  74. const isFF = CSS.supports('-moz-appearance', 'none');
  75. const AudioContext = window.AudioContext || function () {};
  76.  
  77. const PREFIX = 'mpiv-';
  78. const NOAA_ATTR = 'data-no-aa';
  79. const STATUS_ATTR = `${PREFIX}status`;
  80. const MSG = Object.assign({}, ...[
  81.   'getViewSize',
  82.   'viewSize',
  83. ].map(k => ({[k]: `${PREFIX}${k}`})));
  84. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  85. // time for volatile things to settle down meanwhile we postpone action
  86. // examples: loading image from cache, quickly moving mouse over one element to another
  87. const SETTLE_TIME = 50;
  88. // used to detect JS code in host rules
  89. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  90. const RX_EVAL_BLOCKED = /'Trusted(Script| Type)'|unsafe-eval/;
  91. const RX_MEDIA_URL = /^(?!data:)[^?#]+?\.(avif|bmp|jpe?g?|gif|mp4|png|svgz?|web[mp])($|[?#])/i;
  92. const ZOOM_MAX = 16;
  93. const SYM_U = Symbol('u');
  94. const FN_ARGS = {
  95.   s: ['m', 'node', 'rule'],
  96.   c: ['text', 'doc', 'node', 'rule'],
  97.   q: ['text', 'doc', 'node', 'rule'],
  98.   g: ['text', 'doc', 'url', 'm', 'rule', 'node', 'cb'],
  99. };
  100. let trustedHTML, trustedScript;
  101. //#endregion
  102. //#region GM4 polyfill
  103.  
  104. if (typeof GM === 'undefined' || !GM.xmlHttpRequest)
  105.   this.GM = {info: GM_info};
  106. if (!GM.getValue)
  107.   GM.getValue = GM_getValue; // we use it only with `await` so no need to return a Promise
  108. if (!GM.setValue)
  109.   GM.setValue = GM_setValue; // we use it only with `await` so no need to return a Promise
  110. if (!GM.openInTab)
  111.   GM.openInTab = GM_openInTab;
  112. if (!GM.registerMenuCommand && typeof GM_registerMenuCommand === 'function')
  113.   GM.registerMenuCommand = GM_registerMenuCommand;
  114. if (!GM.unregisterMenuCommand && typeof GM_unregisterMenuCommand === 'function')
  115.   GM.unregisterMenuCommand = GM_unregisterMenuCommand;
  116. if (!GM.setClipboard)
  117.   GM.setClipboard = GM_setClipboard;
  118. if (!GM.xmlHttpRequest)
  119.   GM.xmlHttpRequest = GM_xmlhttpRequest;
  120.  
  121. //#endregion
  122.  
  123. const App = {
  124.  
  125.   isEnabled: true,
  126.   isImageTab: false,
  127.   globalStyle: '',
  128.   popupStyleBase: '',
  129.   tabfix: /\.(dumpoir|greatfon|picuki)\.com$/.test(dotDomain),
  130.   NOP: /\.(instagram|chrome|google)\.com$/.test(dotDomain) &&
  131.     (() => {}),
  132.  
  133.   activate(info, event) {
  134.     const {match, node, rule, url} = info;
  135.     const auto = cfg.start === 'auto';
  136.     const vidCtrl = cfg.videoCtrl && isVideo(node);
  137.     if (elSetup) console.info({node, rule, url, match});
  138.     if (auto && vidCtrl && !Events.ctrl)
  139.       return;
  140.     if (ai.node) App.deactivate();
  141.     ai = info;
  142.     ai.force = Events.ctrl;
  143.     ai.gNum = 0;
  144.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  145.     Util.suppressTooltip();
  146.     Calc.updateViewSize();
  147.     Events.ctrl = false;
  148.     Events.toggle(true);
  149.     Events.trackMouse(event);
  150.     if (ai.force && (auto || cfg.start === 'ctrl' || cfg.start === 'context')) {
  151.       App.start();
  152.     } else if (auto && !vidCtrl && !rule.manual) {
  153.       App.belate();
  154.     } else {
  155.       Status.set('ready');
  156.     }
  157.   },
  158.  
  159.   belate() {
  160.     if (cfg.preload) {
  161.       ai.preloadStart = now();
  162.       App.start();
  163.       Status.set('+preloading');
  164.       setTimeout(Status.set, cfg.delay, '-preloading');
  165.     } else {
  166.       ai.timer = setTimeout(App.start, cfg.delay);
  167.     }
  168.   },
  169.  
  170.   checkProgress({start} = {}) {
  171.     const p = ai.popup;
  172.     if (!p)
  173.       return;
  174.     const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  175.     const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  176.     if (h)
  177.       return App.canCommit(w, h);
  178.     if (start) {
  179.       clearInterval(ai.timerProgress);
  180.       ai.timerProgress = setInterval(App.checkProgress, 150);
  181.     }
  182.   },
  183.  
  184.   canCloseVid() {
  185.     return !ai || !ai.popup || !isVideo(ai.popup) || !cfg.keepVids;
  186.   },
  187.  
  188.   canCommit(w, h) {
  189.     if (!ai.force && ai.rect && !ai.gItems &&
  190.         Math.max(w / (ai.rect.width || 1), h / (ai.rect.height || 1)) < cfg.scale) {
  191.       App.deactivate();
  192.       return false;
  193.     }
  194.     App.stopTimers();
  195.     const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  196.     if (wait > 0) {
  197.       ai.timer = setTimeout(App.checkProgress, wait);
  198.     } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  199.       App.handleError({type: 'error'});
  200.     } else {
  201.       App.commit();
  202.     }
  203.     return true;
  204.   },
  205.  
  206.   async commit() {
  207.     const p = ai.popup;
  208.     const isDecoded = cfg.waitLoad && isFunction(p.decode);
  209.     if (isDecoded) {
  210.       await p.decode();
  211.       if (p !== ai.popup)
  212.         return;
  213.     }
  214.     App.updateStyles();
  215.     Calc.measurePopup();
  216.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  217.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  218.     if (willMove)
  219.       Popup.move();
  220.     Bar.updateName();
  221.     Bar.updateDetails();
  222.     Status.set(!ai.popupLoaded && 'loading');
  223.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  224.                ai.nheight > p.clientHeight + ai.extras.h;
  225.     if (ai.large) {
  226.       Status.set('+large');
  227.       // prevent a blank bg+border in FF
  228.       if (isFF && p.complete && !isDecoded)
  229.         p.style.backgroundImage = `url('${p.src}')`;
  230.     }
  231.   },
  232.  
  233.   deactivate({wait} = {}) {
  234.     App.stopTimers();
  235.     if (ai.req)
  236.       tryCatch.call(ai.req, ai.req.abort);
  237.     if (ai.tooltip)
  238.       ai.tooltip.node.title = ai.tooltip.text;
  239.     Status.set(false);
  240.     Bar.set(false);
  241.     Events.toggle(false);
  242.     Popup.destroy();
  243.     if (wait) {
  244.       App.isEnabled = false;
  245.       setTimeout(App.enable, 200);
  246.     }
  247.     ai = {rule: {}};
  248.   },
  249.  
  250.   enable() {
  251.     App.isEnabled = true;
  252.   },
  253.  
  254.   handleError(e, rule = ai.rule) {
  255.     if (rule && rule.onerror === 'skip')
  256.       return;
  257.     if (ai.imageUrl &&
  258.         !ai.xhr &&
  259.         !ai.imageUrl.startsWith(location.origin + '/') &&
  260.         location.protocol === 'https:' &&
  261.         CspSniffer.init) {
  262.       Popup.create(ai.imageUrl, ai.pageUrl, e);
  263.       return;
  264.     }
  265.     const fe = Util.formatError(e, rule);
  266.     if (!rule || !ai.urls || !ai.urls.length)
  267.       console.warn(...fe);
  268.     if (ai.urls && ai.urls.length) {
  269.       ai.url = ai.urls.shift();
  270.       if (ai.url) {
  271.         App.stopTimers();
  272.         App.startSingle();
  273.       } else {
  274.         App.deactivate();
  275.       }
  276.     } else if (ai.node) {
  277.       Status.set('error');
  278.       Bar.set(fe.message, 'error');
  279.     }
  280.   },
  281.  
  282.   /** @param {MessageEvent} e */
  283.   onMessage(e) {
  284.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  285.       e.stopImmediatePropagation();
  286.       for (const el of doc.getElementsByTagName('iframe')) {
  287.         if (el.contentWindow === e.source) {
  288.           const s = Calc.frameSize(el, window).join(':');
  289.           e.source.postMessage(`${MSG.viewSize}:${s}`, '*');
  290.           return;
  291.         }
  292.       }
  293.     }
  294.   },
  295.  
  296.   /** @param {MessageEvent} e */
  297.   onMessageChild(e) {
  298.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  299.       e.stopImmediatePropagation();
  300.       removeEventListener('message', App.onMessageChild, true);
  301.       const [w, h, x, y] = e.data.split(':').slice(1).map(parseFloat);
  302.       if (w && h) ai.view = {w, h, x, y};
  303.     }
  304.   },
  305.  
  306.   start() {
  307.     App.updateStyles();
  308.     if (ai.gallery)
  309.       App.startGallery();
  310.     else
  311.       App.startSingle();
  312.   },
  313.  
  314.   startSingle() {
  315.     Status.loading();
  316.     ai.imageUrl = null;
  317.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  318.       Req.findRedirect();
  319.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  320.       App.startFromQ();
  321.     } else {
  322.       Popup.create(ai.url);
  323.       Ruler.runC();
  324.     }
  325.   },
  326.  
  327.   async startFromQ() {
  328.     try {
  329.       const {responseText, doc, finalUrl} = await Req.getDoc(ai.url);
  330.       const url = Ruler.runQ(responseText, doc, finalUrl);
  331.       if (!url)
  332.         throw 'The "q" rule did not produce any URL.';
  333.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  334.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  335.         if (!info || !info.url)
  336.           throw `Couldn't follow URL: ${url}`;
  337.         Object.assign(ai, info);
  338.         App.startSingle();
  339.       } else {
  340.         Popup.create(url, finalUrl);
  341.         Ruler.runC(responseText, doc);
  342.       }
  343.     } catch (e) {
  344.       App.handleError(e);
  345.     }
  346.   },
  347.  
  348.   async startGallery() {
  349.     Status.loading();
  350.     try {
  351.       const startUrl = ai.url;
  352.       const p = await Req.getDoc(ai.rule.s !== 'gallery' && startUrl);
  353.       const items = await new Promise(cb => {
  354.         const res = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, ai.node, cb);
  355.         if (res !== undefined) cb(res);
  356.       });
  357.       // bail out if the gallery's async callback took too long
  358.       if (ai.url !== startUrl) return;
  359.       ai.gNum = items.length;
  360.       ai.gItems = items.length && items;
  361.       if (ai.gItems) {
  362.         const i = items.index;
  363.         ai.gIndex = i === (i | 0) && items[i] ? i | 0 :
  364.           typeof i === 'string' ? clamp(items.findIndex(x => x.url === i), 0) :
  365.             Gallery.findIndex(ai.url);
  366.         setTimeout(Gallery.next);
  367.       } else {
  368.         throw 'Empty gallery';
  369.       }
  370.     } catch (e) {
  371.       App.handleError(e);
  372.     }
  373.   },
  374.  
  375.   stopTimers() {
  376.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  377.       clearTimeout(ai[timer]);
  378.     clearInterval(ai.timerProgress);
  379.   },
  380.  
  381.   toggleZoom({keepScale} = {}) {
  382.     const p = ai.popup;
  383.     if (!p || !ai.scales || ai.scales.length < 2)
  384.       return;
  385.     ai.zoomed = !ai.zoomed;
  386.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  387.     if (ai.zooming)
  388.       p.classList.add(`${PREFIX}zooming`);
  389.     Popup.move();
  390.     Bar.updateDetails();
  391.     Status.set(ai.zoomed ? 'zoom' : false);
  392.     return ai.zoomed;
  393.   },
  394.  
  395.   updateStyles() {
  396.     Util.addStyle('global', (App.globalStyle || createGlobalStyle()) + cfg._getCss());
  397.     Util.addStyle('rule', ai.rule.css || '');
  398.   },
  399. };
  400.  
  401. const Bar = {
  402.  
  403.   set(label, className) {
  404.     let b = ai.bar;
  405.     if (typeof label !== 'string') {
  406.       $remove(b);
  407.       ai.bar = null;
  408.       return;
  409.     }
  410.     if (!b) b = ai.bar = $new('div', {id: `${PREFIX}bar`});
  411.     App.updateStyles();
  412.     Bar.updateDetails();
  413.     Bar.show();
  414.     b.textContent = '';
  415.     if (/<([a-z][-a-z]*)[^<>]*>[^<>]*<\/\1\s*>/i.test(label)) { // checking for <tag...>...</tag>
  416.       b.innerHTML = trustedHTML ? trustedHTML(label) : label;
  417.     } else {
  418.       b.textContent = label;
  419.     }
  420.     if (!b.parentNode) {
  421.       doc.body.appendChild(b);
  422.       Util.forceLayout(b);
  423.     }
  424.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  425.   },
  426.  
  427.   show(isForced) {
  428.     clearTimeout(ai.timerBar);
  429.     ai.bar.style.removeProperty('opacity');
  430.     if (isForced)
  431.       ai.bar.dataset.force = '';
  432.     else
  433.       ai.timerBar = setTimeout(Bar.hide, 3000);
  434.   },
  435.  
  436.   hide(isForced) {
  437.     if (ai.bar && (isForced || ai.bar.dataset.force == null)) {
  438.       $css(ai.bar, {opacity: 0});
  439.       delete ai.bar.dataset.force;
  440.     }
  441.   },
  442.  
  443.   updateName() {
  444.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  445.     if (gi) {
  446.       const item = gi[i];
  447.       const noDesc = !gi.some(_ => _.desc);
  448.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  449.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  450.         item.desc,
  451.       ].filter(Boolean).join(' - ')}`;
  452.       Bar.set(c.trim() || ' ', 'gallery', true);
  453.     } else if ('caption' in ai) {
  454.       Bar.set(ai.caption, 'caption');
  455.     } else if (ai.tooltip) {
  456.       Bar.set(ai.tooltip.text, 'tooltip');
  457.     } else {
  458.       Bar.set(' ', 'info');
  459.     }
  460.   },
  461.  
  462.   updateDetails() {
  463.     if (!ai.bar) return;
  464.     const r = ai.rotate;
  465.     const zoom = ai.nwidth && `${
  466.       Math.round(ai.scale * 100)
  467.     }%${
  468.       ai.flipX || ai.flipY ? `, ${ai.flipX ? '⇆' : ''}${ai.flipY ? '⇅' : ''}` : ''
  469.     }${
  470.       r ? ', ' + (r > 180 ? r - 360 : r) + '°' : ''
  471.     }, ${
  472.       ai.nwidth
  473.     } x ${
  474.       ai.nheight
  475.     } px, ${
  476.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  477.     } MP, ${
  478.       Calc.aspectRatio(ai.nwidth, ai.nheight)
  479.     }`.replace(/\x20/g, '\xA0');
  480.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  481.       if (zoom) ai.bar.dataset.zoom = zoom;
  482.       else delete ai.bar.dataset.zoom;
  483.       Bar.show();
  484.     }
  485.   },
  486. };
  487.  
  488. const Calc = {
  489.  
  490.   aspectRatio(w, h) {
  491.     for (let rat = w / h, a, b = 0; ;) {
  492.       b++;
  493.       a = Math.round(w * b / h);
  494.       if (a > 10 && b > 10 || a > 100 || b > 100)
  495.         return rat.toFixed(2);
  496.       if (Math.abs(a / b - rat) < .01)
  497.         return `${a}:${b}`;
  498.     }
  499.   },
  500.  
  501.   frameSize(elFrame, wnd) {
  502.     if (!elFrame) return;
  503.     const r = elFrame.getBoundingClientRect();
  504.     const w = Math.min(r.right, wnd.innerWidth) - Math.max(r.left, 0);
  505.     const h = Math.min(r.bottom, wnd.innerHeight) - Math.max(r.top, 0);
  506.     const x = r.left < 0 ? -r.left : 0;
  507.     const y = r.top < 0 ? -r.top : 0;
  508.     return [w, h, x, y];
  509.   },
  510.  
  511.   generateScales(fit) {
  512.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  513.     const zoomStep = cfg.zoomStep / 100;
  514.     const arr = [scale];
  515.     if (fit !== 1) {
  516.       const diff = goal / scale;
  517.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  518.       const step = steps && Math.pow(diff, 1 / steps);
  519.       for (let i = steps; --i > 0;)
  520.         arr.push((scale *= step));
  521.       arr.push(scale = goal);
  522.     }
  523.     while ((scale *= zoomStep) <= ZOOM_MAX)
  524.       arr.push(scale);
  525.     return arr;
  526.   },
  527.  
  528.   measurePopup() {
  529.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  530.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  531.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  532.     if (p.clientWidth > nw) {
  533.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  534.       nh = ai.nheight = w / nw * nh | 0;
  535.       nw = ai.nwidth = w;
  536.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  537.     }
  538.     p.classList.add(`${PREFIX}show`);
  539.     p.removeAttribute('style');
  540.     const s = getComputedStyle(p);
  541.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  542.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  543.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  544.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  545.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  546.     ai.extras = {
  547.       inw, inh,
  548.       outw, outh,
  549.       o: o2 / 2,
  550.       w: inw + outw,
  551.       h: inh + outh,
  552.     };
  553.     const fit = Math.min(
  554.       (ai.view.w - ai.extras.w) / ai.nwidth,
  555.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  556.     const isCustom = !cfg.fit && cfg.scales.length;
  557.     let cutoff = Math.min(1, fit);
  558.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  559.     if (isCustom) {
  560.       const dst = [];
  561.       for (const scale of cfg.scales) {
  562.         const val = parseFloat(scale) || fit;
  563.         dst.push(val);
  564.         if (isCustom && typeof scale === 'string') {
  565.           if (scale.includes('!')) cutoff = val;
  566.           if (scale.includes('*')) scaleZoom = val;
  567.         }
  568.       }
  569.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  570.     } else {
  571.       ai.scales = Calc.generateScales(fit);
  572.     }
  573.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  574.     ai.scaleFit = fit;
  575.     ai.scaleZoom = scaleZoom;
  576.   },
  577.  
  578.   rect() {
  579.     let {node, rule} = ai;
  580.     let n = rule.rect && node.closest(rule.rect);
  581.     if (n) return n.getBoundingClientRect();
  582.     const nested = node.getElementsByTagName('*');
  583.     let maxArea = 0;
  584.     let maxBounds;
  585.     n = node;
  586.     for (let i = 0; n; n = nested[i++]) {
  587.       const bounds = n.getBoundingClientRect();
  588.       const area = bounds.width * bounds.height;
  589.       if (area > maxArea) {
  590.         maxArea = area;
  591.         maxBounds = bounds;
  592.         node = n;
  593.       }
  594.     }
  595.     return maxBounds;
  596.   },
  597.  
  598.   scaleBiggerThan(scale, i, arr) {
  599.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  600.   },
  601.  
  602.   scaleIndex(dir) {
  603.     const i = ai.scales.indexOf(ai.scale);
  604.     if (i >= 0) return i + dir;
  605.     for (
  606.       let len = ai.scales.length,
  607.         i = dir > 0 ? 0 : len - 1;
  608.       i >= 0 && i < len;
  609.       i += dir
  610.     ) {
  611.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  612.         return i;
  613.     }
  614.     return -1;
  615.   },
  616.  
  617.   scaleForFirstZoom(keepScale) {
  618.     const z = ai.scaleZoom;
  619.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  620.   },
  621.  
  622.   updateViewSize() {
  623.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  624.     ai.view = {w: view.clientWidth, h: view.clientHeight, x: 0, y: 0};
  625.     if (window === top) return;
  626.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  627.     if (w && h) {
  628.       ai.view = {w, h, x: 0, y: 0};
  629.     } else {
  630.       addEventListener('message', App.onMessageChild, true);
  631.       parent.postMessage(MSG.getViewSize, '*');
  632.     }
  633.   },
  634. };
  635.  
  636. class Config {
  637.  
  638.   constructor({data: c, save}) {
  639.     if (typeof c === 'string')
  640.       c = tryJSON(c);
  641.     if (typeof c !== 'object' || !c)
  642.       c = {};
  643.     const {DEFAULTS} = Config;
  644.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  645.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  646.         '';
  647.     if (c.version !== DEFAULTS.version) {
  648.       if (typeof c.hosts === 'string')
  649.         c.hosts = c.hosts.split('\n')
  650.           .map(s => tryJSON(s) || s)
  651.           .filter(Boolean);
  652.       if (c.close === true || c.close === false)
  653.         c.zoomOut = c.close ? 'auto' : 'stay';
  654.       for (const key in DEFAULTS)
  655.         if (typeof c[key] !== typeof DEFAULTS[key])
  656.           c[key] = DEFAULTS[key];
  657.       if (c.version === 3 && c.scales[0] === 0)
  658.         c.scales[0] = '0!';
  659.       for (const key in c)
  660.         if (!(key in DEFAULTS))
  661.           delete c[key];
  662.       c.version = DEFAULTS.version;
  663.       if (save)
  664.         GM.setValue('cfg', c);
  665.     }
  666.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  667.       App.globalStyle = '';
  668.     if (!Array.isArray(c.scales))
  669.       c.scales = [];
  670.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  671.     Object.assign(this, DEFAULTS, c);
  672.   }
  673.  
  674.   static async load(opts) {
  675.     opts.data = await GM.getValue('cfg');
  676.     return new Config(opts);
  677.   }
  678.  
  679.   _getCss() {
  680.     const {css} = this;
  681.     return css.includes('{') ? css : `#${PREFIX}-popup {${css}}`;
  682.   }
  683. }
  684.  
  685. Config.DEFAULTS = /** @type mpiv.Config */ Object.assign(Object.create(null), {
  686.   center: false,
  687.   css: '',
  688.   delay: 500,
  689.   fit: '',
  690.   globalStatus: false,
  691.   // prefer ' inside rules because " will be displayed as \"
  692.   // example: "img[src*='icon']"
  693.   hosts: [{
  694.     name: 'No popup for YouTube thumbnails',
  695.     d: 'www.youtube.com',
  696.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  697.     s: '',
  698.   }, {
  699.     name: 'No popup for SVG/PNG icons',
  700.     d: '',
  701.     e: "img[src*='icon']",
  702.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  703.     s: '',
  704.   }],
  705.   imgtab: false,
  706.   keepOnBlur: false,
  707.   keepVids: false,
  708.   mute: false,
  709.   night: false,
  710.   preload: false,
  711.   scale: 1.05,
  712.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  713.   start: 'auto',
  714.   startAlt: 'context',
  715.   startAltShown: false,
  716.   uiBackgroundColor: '#ffffff',
  717.   uiBackgroundOpacity: 100,
  718.   uiBorderColor: '#000000',
  719.   uiBorderOpacity: 100,
  720.   uiBorder: 0,
  721.   uiFadein: true,
  722.   uiFadeinGallery: true, // some computers show white background while loading so fading hides it
  723.   uiShadowColor: '#000000',
  724.   uiShadowOpacity: 80,
  725.   uiShadow: 20,
  726.   uiPadding: 0,
  727.   uiMargin: 0,
  728.   version: 6,
  729.   videoCtrl: true,
  730.   waitLoad: false,
  731.   xhr: true,
  732.   zoom: 'context',
  733.   zoomOut: 'auto',
  734.   zoomStep: 133,
  735. });
  736.  
  737. const CspSniffer = {
  738.  
  739.   /** @type {?Object<string,string[]>} */
  740.   csp: null,
  741.   selfUrl: location.origin + '/',
  742.  
  743.   // will be null when done
  744.   init() {
  745.     this.busy = new Promise(resolve => {
  746.       const xhr = new XMLHttpRequest();
  747.       xhr.open('get', location);
  748.       xhr.timeout = Math.max(2000, (performance.timing.responseEnd - performance.timeOrigin) * 2);
  749.       xhr.onreadystatechange = () => {
  750.         if (xhr.readyState >= xhr.HEADERS_RECEIVED) {
  751.           this.csp = this._parse([
  752.             xhr.getResponseHeader('content-security-policy'),
  753.             $prop('meta[http-equiv="Content-Security-Policy"]', 'content'),
  754.           ].filter(Boolean).join(','));
  755.           this.init = this.busy = xhr.onreadystatechange = null;
  756.           xhr.abort();
  757.           resolve();
  758.         }
  759.       };
  760.       xhr.send();
  761.     });
  762.   },
  763.  
  764.   async check(url, allowInit) {
  765.     if (allowInit && this.init) this.init();
  766.     if (this.busy) await this.busy;
  767.     const isVideo = Util.isVideoUrl(url);
  768.     let mode;
  769.     if (this.csp) {
  770.       const src = this.csp[isVideo ? 'media' : 'img'];
  771.       if (!src.some(this._srcMatches, url))
  772.         mode = [mode, 'blob', 'data'].find(m => src.includes(`${m}:`));
  773.     }
  774.     return [mode || ai.xhr, isVideo];
  775.   },
  776.  
  777.   _parse(csp) {
  778.     if (!csp) return;
  779.     const src = {};
  780.     const rx = /(?:^|[;,])\s*(?:(default|img|media|script)-src|require-(trusted)-types-for) ([^;,]+)/g;
  781.     for (let m; (m = rx.exec(csp));)
  782.       src[m[1] || m[2]] = m[3].trim().split(/\s+/);
  783.     if ((src.script || []).find(s => /^'nonce-(.+)'$/.test(s)))
  784.       nonce = RegExp.$1;
  785.     if ((src.trusted || []).includes("'script'"))
  786.       App.NOP = () => {};
  787.     if (!src.img) src.img = src.default || [];
  788.     if (!src.media) src.media = src.default || [];
  789.     for (const set of [src.img, src.media]) {
  790.       set.forEach((item, i) => {
  791.         if (item !== '*' && item.includes('*')) {
  792.           set[i] = new RegExp(
  793.             (/^\w+:/.test(item) ? '^' : '^\\w+://') +
  794.             item
  795.             .replace(/[.+?^$|()[\]{}]/g, '\\$&')
  796.             .replace(/(\\\.)?(\*)(\\\.)?/g, (_, a, b, c) =>
  797.               `${a ? '\\.?' : ''}[^:/]*${c ? '\\.?' : ''}`)
  798.             .replace(/[^/]$/, '$&/'));
  799.         }
  800.       });
  801.     }
  802.     return src;
  803.   },
  804.  
  805.   /** @this string */
  806.   _srcMatches(src) {
  807.     return src instanceof RegExp ? src.test(this) :
  808.       src === '*' ||
  809.       src && this.startsWith(src) && (src.endsWith('/') || this[src.length] === '/') ||
  810.       src === "'self'" && this.startsWith(CspSniffer.selfUrl);
  811.   },
  812. };
  813.  
  814. const Events = {
  815.  
  816.   ctrl: false,
  817.   hoverData: null,
  818.   hoverTimer: 0,
  819.   ignoreKeyHeld: false,
  820.  
  821.   onMouseOver(e) {
  822.     let node = e.target;
  823.     Events.ignoreKeyHeld = e.shiftKey;
  824.     if (!App.isEnabled ||
  825.         !App.canCloseVid() ||
  826.         e.shiftKey ||
  827.         ai.zoomed ||
  828.         node === ai.popup ||
  829.         node === doc.body ||
  830.         node === doc.documentElement ||
  831.         node === elSetup ||
  832.         ai.gallery && ai.rectHovered)
  833.       return;
  834.     if (node.shadowRoot)
  835.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  836.     // we don't want to process everything in the path of a quickly moving mouse cursor
  837.     Events.hoverData = {e, node, start: now()};
  838.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  839.     node.addEventListener('mouseout', Events.onMouseOutThrottled);
  840.   },
  841.  
  842.   onMouseOverThrottled(force) {
  843.     const {start, e, node, nodeOut} = Events.hoverData || {};
  844.     if (!node || node === nodeOut && (Events.hoverData = null, 1))
  845.       return;
  846.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  847.     const wait = force ? 0 : start + SETTLE_TIME - now();
  848.     const t = Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  849.     if (t)
  850.       return;
  851.     Events.hoverData = null;
  852.     if (!Ruler.rules)
  853.       Ruler.init();
  854.     const info = RuleMatcher.adaptiveFind(node);
  855.     if (info && info.url && info.node !== ai.node)
  856.       App.activate(info, e);
  857.   },
  858.  
  859.   onMouseOut(e) {
  860.     if (!e.relatedTarget && !cfg.keepOnBlur && !e.shiftKey && App.canCloseVid())
  861.       App.deactivate();
  862.   },
  863.  
  864.   onMouseOutThrottled(e) {
  865.     const d = Events.hoverData;
  866.     if (d) d.nodeOut = this;
  867.     this.removeEventListener('mouseout', Events.onMouseOutThrottled);
  868.     Events.hoverTimer = 0;
  869.   },
  870.  
  871.   onMouseOutShadow(e) {
  872.     const root = e.target.shadowRoot;
  873.     if (root) {
  874.       root.removeEventListener('mouseover', Events.onMouseOver);
  875.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  876.     }
  877.   },
  878.  
  879.   onMouseMove(e) {
  880.     Events.trackMouse(e);
  881.     if (e.shiftKey)
  882.       return;
  883.     if (!ai.zoomed && !ai.rectHovered && App.canCloseVid()) {
  884.       App.deactivate();
  885.     } else if (ai.zoomed) {
  886.       Popup.move();
  887.       const {cx, cy, view: {w, h}} = ai;
  888.       const bx = w / 6;
  889.       const by = h / 6;
  890.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  891.       Status.set(`${onEdge ? '+' : '-'}edge`);
  892.     }
  893.   },
  894.  
  895.   onMouseDown({shiftKey, button, target}) {
  896.     if (!button && target === ai.popup && ai.popup.controls && (shiftKey || !App.canCloseVid())) {
  897.       ai.controlled = ai.zoomed = true;
  898.     } else if (button === 2 || shiftKey) {
  899.       // Shift = ignore; RMB will be processed in onContext
  900.     } else {
  901.       App.deactivate({wait: true});
  902.       doc.addEventListener('mouseup', App.enable, {once: true});
  903.     }
  904.   },
  905.  
  906.   onMouseScroll(e) {
  907.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  908.     if (ai.zoomed) {
  909.       Events.zoomInOut(dir);
  910.     } else if (ai.gNum > 1 && ai.popup) {
  911.       Gallery.next(-dir);
  912.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  913.       App.toggleZoom();
  914.     } else if (App.canCloseVid()) {
  915.       App.deactivate();
  916.       return;
  917.     }
  918.     dropEvent(e);
  919.   },
  920.  
  921.   onKeyDown(e) {
  922.     // Synthesized events may be of the wrong type and not have a `key`
  923.     const key = describeKey(e);
  924.     const p = ai.popup;
  925.     if (!p && key === '^Control') {
  926.       addEventListener('keyup', Events.onKeyUp, true);
  927.       Events.ctrl = true;
  928.     }
  929.     if (!p && key === '^ContextMenu')
  930.       return Events.onContext.call(this, e);
  931.     if (!p || e.repeat)
  932.       return;
  933.     switch (key) {
  934.       case '+Shift':
  935.         if (ai.shiftKeyTime)
  936.           return;
  937.         ai.shiftKeyTime = now();
  938.         Status.set('+shift');
  939.         Bar.show(true);
  940.         if (isVideo(p))
  941.           p.controls = true;
  942.         return;
  943.       case 'KeyA':
  944.         if (!p.hasAttribute(NOAA_ATTR))
  945.           p.setAttribute(NOAA_ATTR, '');
  946.         else
  947.           p.removeAttribute(NOAA_ATTR);
  948.         break;
  949.       case 'ArrowRight':
  950.       case 'KeyJ':
  951.         Gallery.next(1);
  952.         break;
  953.       case 'ArrowLeft':
  954.       case 'KeyK':
  955.         Gallery.next(-1);
  956.         break;
  957.       case 'KeyD':
  958.         Req.saveFile();
  959.         break;
  960.       case 'KeyH': // flip horizontally
  961.       case 'KeyV': // flip vertically
  962.       case 'KeyL': // rotate left
  963.       case 'KeyR': // rotate right
  964.         if (!p)
  965.           return;
  966.         if (key === 'KeyH' || key === 'KeyV') {
  967.           const side = !!(ai.rotate % 180) ^ (key === 'KeyH') ? 'flipX' : 'flipY';
  968.           ai[side] = !ai[side];
  969.         } else {
  970.           ai.rotate = ((ai.rotate || 0) + 90 * (key === 'KeyL' ? -1 : 1) + 360) % 360;
  971.         }
  972.         Bar.updateDetails();
  973.         Popup.move();
  974.         break;
  975.       case 'KeyM':
  976.         if (isVideo(p))
  977.           p.muted = !p.muted;
  978.         break;
  979.       case 'KeyN':
  980.         ai.night = p.classList.toggle('mpiv-night');
  981.         break;
  982.       case 'KeyT':
  983.         GM.openInTab(Util.tabFixUrl() || p.src);
  984.         App.deactivate();
  985.         break;
  986.       case 'Minus':
  987.       case 'NumpadSubtract':
  988.         if (ai.zoomed) {
  989.           Events.zoomInOut(-1);
  990.         } else {
  991.           App.toggleZoom();
  992.         }
  993.         break;
  994.       case 'Equal':
  995.       case 'NumpadAdd':
  996.         if (ai.zoomed) {
  997.           Events.zoomInOut(1);
  998.         } else {
  999.           App.toggleZoom();
  1000.         }
  1001.         break;
  1002.       case 'Escape':
  1003.         App.deactivate({wait: true});
  1004.         break;
  1005.       case '!Alt':
  1006.         return;
  1007.       default:
  1008.         App.deactivate({wait: true});
  1009.         return;
  1010.     }
  1011.     dropEvent(e);
  1012.   },
  1013.  
  1014.   onKeyUp(e) {
  1015.     const p = ai.popup || false;
  1016.     if (e.key === 'Control') {
  1017.       if (!p) removeEventListener('keyup', Events.onKeyUp, true);
  1018.       setTimeout(() => (Events.ctrl = false));
  1019.     }
  1020.     if (p && e.key === 'Shift' && ai.shiftKeyTime) {
  1021.       Status.set('-shift');
  1022.       Bar.hide(true);
  1023.       if (p.controls)
  1024.         p.controls = false;
  1025.       // Chrome doesn't expose events for clicks on video controls so we'll guess
  1026.       if (ai.controlled || !isFF && now() - ai.shiftKeyTime > 500)
  1027.         ai.controlled = false;
  1028.       else if (p && (ai.zoomed || ai.rectHovered !== false))
  1029.         App.toggleZoom();
  1030.       else
  1031.         App.deactivate({wait: true});
  1032.       ai.shiftKeyTime = 0;
  1033.     } else if (
  1034.       describeKey(e) === 'Control' && !p && !Events.ignoreKeyHeld &&
  1035.       (cfg.start === 'ctrl' || cfg.start === 'context' || ai.rule.manual)
  1036.     ) {
  1037.       dropEvent(e);
  1038.       if (Events.hoverData) {
  1039.         Events.hoverData.e = e;
  1040.         Events.onMouseOverThrottled(true);
  1041.       }
  1042.       if (ai.node) {
  1043.         ai.force = true;
  1044.         App.start();
  1045.       }
  1046.     }
  1047.   },
  1048.  
  1049.   onContext(e) {
  1050.     if (Events.ignoreKeyHeld)
  1051.       return;
  1052.     const p = ai.popup;
  1053.     if (cfg.zoom === 'context' && p && App.toggleZoom()) {
  1054.       dropEvent(e);
  1055.     } else if (!p && (!cfg.videoCtrl || !isVideo(ai.node) || Events.ctrl) && (
  1056.       cfg.start === 'context' ||
  1057.       cfg.start === 'contextMK' ||
  1058.       cfg.start === 'contextM' && (e.button === 2) ||
  1059.       cfg.start === 'contextK' && (e.button !== 2) ||
  1060.       (cfg.start === 'auto' && ai.rule.manual)
  1061.     )) {
  1062.       // right-clicked on an image while the context menu is shown for something else
  1063.       if (!ai.node && !Events.hoverData)
  1064.         Events.onMouseOver(e);
  1065.       Events.onMouseOverThrottled(true);
  1066.       if (ai.node) {
  1067.         ai.force = true;
  1068.         App.start();
  1069.         dropEvent(e);
  1070.       }
  1071.     } else if (p) {
  1072.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  1073.     }
  1074.   },
  1075.  
  1076.   onVisibility(e) {
  1077.     Events.ctrl = false;
  1078.   },
  1079.  
  1080.   pierceShadow(node, x, y) {
  1081.     for (let root; (root = node.shadowRoot);) {
  1082.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  1083.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  1084.       const inner = root.elementFromPoint(x, y);
  1085.       if (!inner || inner === node)
  1086.         break;
  1087.       node = inner;
  1088.     }
  1089.     return node;
  1090.   },
  1091.  
  1092.   toggle(enable) {
  1093.     const onOff = enable ? 'addEventListener' : 'removeEventListener';
  1094.     const passive = {passive: true, capture: true};
  1095.     window[onOff]('mousemove', Events.onMouseMove, passive);
  1096.     window[onOff]('mouseout', Events.onMouseOut, passive);
  1097.     window[onOff]('mousedown', Events.onMouseDown, passive);
  1098.     window[onOff]('keyup', Events.onKeyUp, true);
  1099.     window[onOff](WHEEL_EVENT, Events.onMouseScroll, {passive: false, capture: true});
  1100.     ai.node.removeEventListener('mouseout', Events.onMouseOutThrottled);
  1101.   },
  1102.  
  1103.   trackMouse(e) {
  1104.     const cx = ai.cx = e.clientX;
  1105.     const cy = ai.cy = e.clientY;
  1106.     const r = ai.rect || (ai.rect = Calc.rect());
  1107.     ai.rectHovered =
  1108.       cx > r.left - 2 && cx < r.right + 2 &&
  1109.       cy > r.top - 2 && cy < r.bottom + 2;
  1110.   },
  1111.  
  1112.   zoomInOut(dir) {
  1113.     const i = Calc.scaleIndex(dir);
  1114.     const n = ai.scales.length;
  1115.     if (i >= 0 && i < n)
  1116.       ai.scale = ai.scales[i];
  1117.     const zo = cfg.zoomOut;
  1118.     if (i <= 0 && zo !== 'stay') {
  1119.       if (ai.scaleFit < ai.scale * .99) {
  1120.         ai.scales.unshift(ai.scale = ai.scaleFit);
  1121.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  1122.         App.deactivate({wait: true});
  1123.         return;
  1124.       }
  1125.       ai.zoomed = zo !== 'unzoom';
  1126.     } else {
  1127.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  1128.     }
  1129.     if (ai.zooming)
  1130.       ai.popup.classList.add(`${PREFIX}zooming`);
  1131.     Popup.move();
  1132.     Bar.updateDetails();
  1133.   },
  1134. };
  1135.  
  1136. const Gallery = {
  1137.  
  1138.   makeParser(g) {
  1139.     return isFunction(g) ? g : Gallery.defaultParser;
  1140.   },
  1141.  
  1142.   findIndex(gUrl) {
  1143.     const sel = gUrl.split('#')[1];
  1144.     if (!sel)
  1145.       return 0;
  1146.     if (/^\d+$/.test(sel))
  1147.       return parseInt(sel);
  1148.     for (let i = ai.gNum; i--;) {
  1149.       let {url} = ai.gItems[i];
  1150.       if (Array.isArray(url))
  1151.         url = url[0];
  1152.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  1153.         return i;
  1154.     }
  1155.     return 0;
  1156.   },
  1157.  
  1158.   next(dir) {
  1159.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  1160.     const item = ai.gItems[ai.gIndex];
  1161.     if (Array.isArray(item.url)) {
  1162.       ai.urls = item.url.slice(1);
  1163.       ai.url = item.url[0];
  1164.     } else {
  1165.       ai.urls = null;
  1166.       ai.url = item.url;
  1167.     }
  1168.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir || 1)].url)[0];
  1169.     App.startSingle();
  1170.     Bar.updateName();
  1171.   },
  1172.  
  1173.   nextIndex(dir) {
  1174.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  1175.   },
  1176.  
  1177.   defaultParser(text, doc, docUrl, m, rule) {
  1178.     const {g} = rule;
  1179.     const qEntry = g.entry;
  1180.     const qCaption = ensureArray(g.caption);
  1181.     const qImage = g.image || 'img';
  1182.     const qTitle = g.title;
  1183.     const fix =
  1184.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  1185.       (s => s.trim());
  1186.     const items = [...$$(qEntry || qImage, doc)]
  1187.       .map(processEntry)
  1188.       .filter(Boolean);
  1189.     items.title = processTitle();
  1190.     items.index =
  1191.       typeof g.index === 'string' &&
  1192.       Req.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  1193.       RX_HAS_CODE.test(g.index) &&
  1194.       Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  1195.       g.index;
  1196.     return items;
  1197.  
  1198.     function processEntry(entry) {
  1199.       const item = {};
  1200.       try {
  1201.         const img = qEntry ? $(qImage, entry) : entry;
  1202.         item.url = fix(Req.findImageUrl(img, docUrl), true);
  1203.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  1204.       } catch (e) {}
  1205.       return item.url && item;
  1206.     }
  1207.  
  1208.     function processCaption(selector) {
  1209.       const el = $(selector, this) ||
  1210.                  $orSelf(selector, this.previousElementSibling) ||
  1211.                  $orSelf(selector, this.nextElementSibling);
  1212.       return el && fix(el.textContent);
  1213.     }
  1214.  
  1215.     function processTitle() {
  1216.       const el = $(qTitle, doc);
  1217.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  1218.     }
  1219.  
  1220.     function $orSelf(selector, el) {
  1221.       if (el && !el.matches(qEntry))
  1222.         return el.matches(selector) ? el : $(selector, el);
  1223.     }
  1224.   },
  1225. };
  1226.  
  1227. const Menu = window === top && GM.registerMenuCommand && {
  1228.   curAltName: '',
  1229.   unreg: GM.unregisterMenuCommand,
  1230.   makeAltName: () => Menu.unreg
  1231.     ? `MPIV: auto-start is ${cfg.start === 'auto' ? 'ON' : 'OFF'}`
  1232.     : 'MPIV: toggle auto-start',
  1233.   register() {
  1234.     GM.registerMenuCommand('MPIV: configure', setup);
  1235.     Menu.registerAlt();
  1236.   },
  1237.   registerAlt() {
  1238.     if (cfg.startAltShown) {
  1239.       Menu.curAltName = Menu.makeAltName();
  1240.       GM.registerMenuCommand(Menu.curAltName, Menu.onAltToggled);
  1241.     }
  1242.   },
  1243.   reRegisterAlt() {
  1244.     const old = Menu.curAltName;
  1245.     if (old && Menu.unreg) Menu.unreg(old);
  1246.     if (!old || Menu.unreg) Menu.registerAlt();
  1247.   },
  1248.   onAltToggled() {
  1249.     const wasAuto = cfg.start === 'auto';
  1250.     if (wasAuto) {
  1251.       cfg.start = cfg.startAlt || (cfg.startAlt = 'context');
  1252.     } else {
  1253.       cfg.startAlt = cfg.start;
  1254.       cfg.start = 'auto';
  1255.     }
  1256.     Menu.reRegisterAlt();
  1257.   },
  1258. };
  1259.  
  1260. const Popup = {
  1261.  
  1262.   async create(src, pageUrl, error) {
  1263.     const inGallery = !cfg.uiFadeinGallery && ai.gItems && ai.popup && !ai.zooming &&
  1264.       (ai.popup.dataset.galleryFlip = '') === '';
  1265.     Popup.destroy();
  1266.     ai.imageUrl = src;
  1267.     if (!src)
  1268.       return;
  1269.     const myAi = ai;
  1270.     let [xhr, isVideo] = await CspSniffer.check(src, error);
  1271.     if (ai !== myAi)
  1272.       return;
  1273.     if (!xhr && error) {
  1274.       App.handleError(error);
  1275.       return;
  1276.     }
  1277.     Object.assign(ai, {pageUrl, xhr});
  1278.     if (xhr)
  1279.       [src, isVideo] = await Req.getImage(src, pageUrl, xhr).catch(App.handleError) || [];
  1280.     if (ai !== myAi || !src)
  1281.       return;
  1282.     const p = ai.popup = isVideo ? await PopupVideo.create() : $new('img');
  1283.     p.id = `${PREFIX}popup`;
  1284.     p.src = src;
  1285.     p.addEventListener('error', App.handleError);
  1286.     if ((ai.night = (ai.night != null ? ai.night : cfg.night)))
  1287.       p.classList.add('mpiv-night');
  1288.     if (ai.zooming)
  1289.       p.addEventListener('transitionend', Popup.onZoom);
  1290.     if (inGallery) {
  1291.       p.dataset.galleryFlip = '';
  1292.       p.setAttribute('loaded', '');
  1293.     }
  1294.     const poo = typeof p.showPopover === 'function' && $('[popover]:popover-open');
  1295.     ai.popover = poo && poo.getBoundingClientRect().width && ($css(poo, {opacity: 0}), poo) || null;
  1296.     doc.body.insertBefore(p, ai.bar && ai.bar.parentElement === doc.body && ai.bar || null);
  1297.     await 0;
  1298.     if (App.checkProgress({start: true}) === false)
  1299.       return;
  1300.     if (p.complete)
  1301.       Popup.onLoad.call(ai.popup);
  1302.     else if (!isVideo)
  1303.       p.addEventListener('load', Popup.onLoad, {once: true});
  1304.   },
  1305.  
  1306.   destroy() {
  1307.     const p = ai.popup;
  1308.     if (!p) return;
  1309.     p.removeEventListener('load', Popup.onLoad);
  1310.     p.removeEventListener('error', App.handleError);
  1311.     if (ai.popover) {
  1312.       ai.popover.style.removeProperty('opacity');
  1313.       ai.popover = null;
  1314.     }
  1315.     if (isFunction(p.pause))
  1316.       p.pause();
  1317.     if (ai.blobUrl)
  1318.       setTimeout(URL.revokeObjectURL, SETTLE_TIME, ai.blobUrl);
  1319.     p.remove();
  1320.     ai.zoomed = ai.popup = ai.popupLoaded = ai.blobUrl = null;
  1321.   },
  1322.  
  1323.   move() {
  1324.     let x, y;
  1325.     const {cx, cy, extras, view} = ai;
  1326.     const vw = view.w - extras.outw;
  1327.     const vh = view.h - extras.outh;
  1328.     const w0 = ai.scale * ai.nwidth + extras.inw;
  1329.     const h0 = ai.scale * ai.nheight + extras.inh;
  1330.     const isSwapped = ai.rotate % 180;
  1331.     const w = isSwapped ? h0 : w0;
  1332.     const h = isSwapped ? w0 : h0;
  1333.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  1334.       const r = ai.rect;
  1335.       const rx = (r.left + r.right) / 2;
  1336.       const ry = (r.top + r.bottom) / 2;
  1337.       if (vw - r.right - 40 > w || w < r.left - 40) {
  1338.         if (h < vh - 60)
  1339.           y = clamp(ry - h / 2, 30, vh - h - 30);
  1340.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  1341.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  1342.         if (w < vw - 60)
  1343.           x = clamp(rx - w / 2, 30, vw - w - 30);
  1344.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  1345.       }
  1346.     }
  1347.     if (x == null) {
  1348.       x = vw > w
  1349.         ? (vw - w) / 2 + view.x
  1350.         : (vw - w) * clamp(5 / 3 * ((cx - view.x) / vw - .2), 0, 1);
  1351.     }
  1352.     if (y == null) {
  1353.       y = vh > h
  1354.         ? (vh - h) / 2 + view.y
  1355.         : (vh - h) * clamp(5 / 3 * ((cy - view.y) / vh - .2), 0, 1);
  1356.     }
  1357.     const diff = isSwapped ? (w0 - h0) / 2 : 0;
  1358.     x += extras.o - diff;
  1359.     y += extras.o + diff;
  1360.     $css(ai.popup, {
  1361.       transform: `translate(${Math.round(x)}px, ${Math.round(y)}px) ` +
  1362.                  `rotate(${ai.rotate || 0}deg) ` +
  1363.                  `scale(${ai.flipX ? -1 : 1},${ai.flipY ? -1 : 1})`,
  1364.       width: `${Math.round(w0)}px`,
  1365.       height: `${Math.round(h0)}px`,
  1366.     });
  1367.   },
  1368.  
  1369.   onLoad() {
  1370.     if (this === ai.popup) {
  1371.       this.setAttribute('loaded', '');
  1372.       ai.popupLoaded = true;
  1373.       Status.set('-loading');
  1374.       if (ai.preloadUrl) {
  1375.         $new('img', {src: ai.preloadUrl});
  1376.         ai.preloadUrl = null;
  1377.       }
  1378.     }
  1379.   },
  1380.  
  1381.   onZoom() {
  1382.     this.classList.remove(`${PREFIX}zooming`);
  1383.   },
  1384. };
  1385.  
  1386. const PopupVideo = {
  1387.   async create() {
  1388.     ai.bufBar = false;
  1389.     ai.bufStart = now();
  1390.     return $new('video', {
  1391.       autoplay: true,
  1392.       controls: true,
  1393.       muted: cfg.mute || new AudioContext().state === 'suspended',
  1394.       loop: true,
  1395.       volume: clamp(+await GM.getValue('volume') || .5, 0, 1),
  1396.       onprogress: PopupVideo.progress,
  1397.       oncanplaythrough: PopupVideo.progressDone,
  1398.       onvolumechange: PopupVideo.rememberVolume,
  1399.     });
  1400.   },
  1401.  
  1402.   progress() {
  1403.     const {duration} = this;
  1404.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1405.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1406.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1407.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1408.     }
  1409.   },
  1410.  
  1411.   progressDone() {
  1412.     this.onprogress = this.oncanplaythrough = null;
  1413.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1414.       Bar.set(false);
  1415.     Popup.onLoad.call(this);
  1416.   },
  1417.  
  1418.   rememberVolume() {
  1419.     GM.setValue('volume', this.volume);
  1420.   },
  1421. };
  1422.  
  1423. const Ruler = {
  1424. /*
  1425.  'u' works only with URLs so it's ignored if 'html' is true
  1426.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1427.    |foo = url or text must start with foo
  1428.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1429.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1430.  'r' is checked only if 'u' matches first
  1431. */
  1432.   init() {
  1433.     const errors = new Map();
  1434.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1435.     const hasGMAE = typeof GM_addElement === 'function';
  1436.     const canEval = nonce || (nonce = ($('script[nonce]') || {}).nonce || '') || hasGMAE;
  1437.     const evalId = canEval && `${GM_info.script.name}${Math.random()}`;
  1438.     const evalRules = [];
  1439.     const evalCode = [`window[${JSON.stringify(evalId)}]=[`];
  1440.     for (const [rule, err] of errors.entries()) {
  1441.       if (!RX_EVAL_BLOCKED.test(err)) {
  1442.         App.handleError('Invalid custom host rule:', rule);
  1443.         continue;
  1444.       }
  1445.       if (canEval) {
  1446.         evalCode.push(evalRules.length ? ',' : '',
  1447.           '[', customRules.indexOf(rule), ',{',
  1448.           ...Object.keys(FN_ARGS)
  1449.             .map(k => RX_HAS_CODE.test(rule[k]) && `${k}(${FN_ARGS[k]}){${rule[k]}},`)
  1450.             .filter(Boolean),
  1451.           '}]');
  1452.       }
  1453.       evalRules.push(rule);
  1454.     }
  1455.     if (evalRules.length) {
  1456.       let result, wnd;
  1457.       if (canEval) {
  1458.         const GMAE = hasGMAE
  1459.           ? GM_addElement // eslint-disable-line no-undef
  1460.           : (tag, {textContent: txt}) => document.head.appendChild(
  1461.             Object.assign(document.createElement(tag), {
  1462.               textContent: trustedScript ? trustedScript(txt) : txt,
  1463.               nonce,
  1464.             }));
  1465.         evalCode.push(']; document.currentScript.remove();');
  1466.         GMAE('script', {textContent: evalCode.join('')});
  1467.         result = (wnd = unsafeWindow)[evalId] ||
  1468.           isFF && (wnd = wnd.wrappedJSObject)[evalId];
  1469.       }
  1470.       if (result) {
  1471.         for (const [index, fns] of result) {
  1472.           Object.assign(customRules[index], fns);
  1473.         }
  1474.         delete wnd[evalId];
  1475.       } else {
  1476.         console.warn('Site forbids compiling JS code in these custom rules', evalRules);
  1477.       }
  1478.     }
  1479.  
  1480.     // rules that disable previewing
  1481.     /** @type mpiv.HostRule[] */
  1482.     const disablers = [
  1483.       dotDomain.endsWith('.stackoverflow.com') && {
  1484.         e: '.post-tag, .post-tag img',
  1485.         s: '',
  1486.       },
  1487.     ];
  1488.  
  1489.     // optimization: a rule is created only when on domain
  1490.     /** @type mpiv.HostRule[] */
  1491.     const perDomain = [
  1492.       hostname.includes('startpage') && {
  1493.         r: /\boiu=(.+)/,
  1494.         s: '$1',
  1495.         follow: true,
  1496.       },
  1497.       dotDomain.endsWith('.4chan.org') && {
  1498.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1499.         q: '.op .fileText a',
  1500.         css: '#post-preview{display:none}',
  1501.       },
  1502.       hostname.includes('amazon.') && {
  1503.         r: /.+?images\/I\/.+?\./,
  1504.         s: m => {
  1505.           const uh = doc.getElementById('universal-hover');
  1506.           return uh ? '' : m[0] + 'jpg';
  1507.         },
  1508.         css: '#zoomWindow{display:none!important;}',
  1509.       },
  1510.       dotDomain.endsWith('.bing.com') && {
  1511.         e: 'a[m*="murl"]',
  1512.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1513.         s: '$1',
  1514.         html: true,
  1515.       },
  1516.       ...dotDomain.endsWith('.deviantart.com') && [{
  1517.         e: 'a[href*="/art/"] img[src*="/v1/"]',
  1518.         r: /^(.+)\/v1\/\w+\/[^/]+\/(.+)-\d+.(\.\w+)(\?.+)/,
  1519.         s: ([, base, name, ext, tok], node) => {
  1520.           let v = Util.getReactChildren(node.closest('a'), 'props.deviation.media.types');
  1521.           return v && (v = v.find(t => t.t === 'fullview')) && `${base}${
  1522.             v.c ? v.c.replace('<prettyName>', name)
  1523.               : `/v1/fill/w_${v.w},h_${v.h}/${name}-fullview${ext}`}${tok}`;
  1524.         },
  1525.       }, {
  1526.         e: '.dev-view-deviation img',
  1527.         s: () => [
  1528.           $('.dev-page-download').href,
  1529.           $('.dev-content-full').src,
  1530.         ].filter(Boolean),
  1531.       }, {
  1532.         e: 'a[data-hook=deviation_link]',
  1533.         q: 'link[as=image]',
  1534.       }] || [],
  1535.       dotDomain.endsWith('.discord.com') && {
  1536.         u: '||discordapp.net/external/',
  1537.         r: /\/https?\/(.+)/,
  1538.         s: '//$1',
  1539.         follow: true,
  1540.       },
  1541.       dotDomain.endsWith('.dropbox.com') && {
  1542.         r: /(.+?&size_mode)=\d+(.*)/,
  1543.         s: '$1=5$2',
  1544.       },
  1545.       dotDomain.endsWith('.facebook.com') && {
  1546.         e: 'a[href^="/photo/?"], a[href^="https://www.facebook.com/photo"]',
  1547.         s: (m, el) => (m = Util.getReactChildren(el.parentNode)) &&
  1548.           pick(m, (m[0] ? '0.props.linkProps' : 'props') + '.passthroughProps.origSrc'),
  1549.       },
  1550.       dotDomain.endsWith('.flickr.com') &&
  1551.       pick(unsafeWindow, 'YUI_config.flickr.api.site_key') && {
  1552.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1553.         s: m => `https://www.flickr.com/services/rest/?${
  1554.           new URLSearchParams({
  1555.             photo_id: m[1],
  1556.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1557.             method: 'flickr.photos.getSizes',
  1558.             format: 'json',
  1559.             nojsoncallback: 1,
  1560.           }).toString()}`,
  1561.         q: text => JSON.parse(text).sizes.size.pop().source,
  1562.         anonymous: true,
  1563.       },
  1564.       dotDomain.endsWith('.github.com') && {
  1565.         r: new RegExp([
  1566.           /(avatars.+?&s=)\d+/,
  1567.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1568.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1569.         ].map(rx => rx.source).join('|')),
  1570.         s: m => `https://${
  1571.           m[1] ? `${m[1]}460` :
  1572.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1573.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1574.         }`,
  1575.       },
  1576.       isGoogleImages && {
  1577.         e: 'a[href*="imgres?imgurl="] img',
  1578.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1579.         follow: true,
  1580.       },
  1581.       isGoogleImages && {
  1582.         e: '[data-tbnid] a:not([href])',
  1583.         s: (m, a) => {
  1584.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1585.           new MutationObserver((_, mo) => {
  1586.             mo.disconnect();
  1587.             App.isEnabled = true;
  1588.             a.alt = a2.innerText;
  1589.             const {left, top} = a.getBoundingClientRect();
  1590.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1591.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1592.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1593.           a2.dispatchEvent(new MouseEvent('mouseup', {bubbles: true}));
  1594.         },
  1595.       },
  1596.       dotDomain.endsWith('.instagram.com') && {
  1597.         e: 'a[href*="/p/"],' +
  1598.           'article [role="button"][tabindex="0"],' +
  1599.           'article [role="button"][tabindex="0"] div',
  1600.         s: (m, node, rule) => {
  1601.           let data, a, n, img, src;
  1602.           if (location.pathname.startsWith('/p/') || location.pathname.startsWith('/tv/')) {
  1603.             img = $('img[srcset], video', node.parentNode);
  1604.             if (img && (isVideo(img) || parseFloat(img.sizes) > 900))
  1605.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1606.           }
  1607.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1608.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1609.           }
  1610.           const numPics = a && pick(data, 'edge_sidecar_to_children.edges.length') ||
  1611.             a && pick(data, 'carousel_media_count');
  1612.           Ruler.toggle(rule, 'q', data && data.is_video && !data.video_url);
  1613.           Ruler.toggle(rule, 'g', a && (numPics > 1 || /<\w+[^>]+carousel/i.test(a.innerHTML)));
  1614.           rule.follow = !data && !rule.g;
  1615.           rule._data = data;
  1616.           rule._img = img;
  1617.           return (
  1618.             !a && !src ? false :
  1619.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1&__d=dis' : ''}` :
  1620.                 data.video_url || data.display_url);
  1621.         },
  1622.         c: (html, doc, node, rule) =>
  1623.           rule._getCaption(rule._data) || (rule._img || 0).alt || '',
  1624.         follow: true,
  1625.         _q: 'meta[property="og:video"]',
  1626.         _g(text, doc, url, m, rule) {
  1627.           const json = tryJSON(text);
  1628.           const media =
  1629.             pick(json, 'graphql.shortcode_media') ||
  1630.             pick(json, 'items.0');
  1631.           const items =
  1632.             pick(media, 'edge_sidecar_to_children.edges', res => res.map(e => ({
  1633.               url: e.node.video_url || e.node.display_url,
  1634.             }))) ||
  1635.             pick(media, 'carousel_media', res => res.map(e => ({
  1636.               url: pick(e, 'video_versions.0.url') || pick(e, 'image_versions2.candidates.0.url'),
  1637.             })));
  1638.           items.title = rule._getCaption(media) || '';
  1639.           return items;
  1640.         },
  1641.         _getCaption: data => pick(data, 'caption.text') ||
  1642.           pick(data, 'edge_media_to_caption.edges.0.node.text'),
  1643.       },
  1644.       ...dotDomain.endsWith('.reddit.com') && [{
  1645.         u: '||i.reddituploads.com/',
  1646.       }, {
  1647.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1648.         s: (m, node) => $propUp(node, 'data-url'),
  1649.       }, {
  1650.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1651.         s: 'https://i$1',
  1652.       }] || [],
  1653.       dotDomain.endsWith('.tumblr.com') && {
  1654.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1655.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1656.         follow: true,
  1657.       },
  1658.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1659.         e: 'a.media-item, a.js-media-image-link',
  1660.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1661.         follow: true,
  1662.       },
  1663.       dotDomain.endsWith('.twitter.com') && {
  1664.         e: '.grid-tweet > .media-overlay',
  1665.         s: (m, node) => node.previousElementSibling.src,
  1666.         follow: true,
  1667.       },
  1668.     ];
  1669.  
  1670.     /** @type mpiv.HostRule[] */
  1671.     const main = [
  1672.       {
  1673.         r: /[/?=](https?%3A%2F%2F[^&]+)/i,
  1674.         s: '$1',
  1675.         follow: true,
  1676.         onerror: 'skip',
  1677.       },
  1678.       {
  1679.         u: [
  1680.           '||500px.com/photo/',
  1681.           '||cl.ly/',
  1682.           '||cweb-pix.com/',
  1683.           '//ibb.co/',
  1684.           '||imgcredit.xyz/image/',
  1685.         ],
  1686.         r: /\.\w+\/.+/,
  1687.         q: 'meta[property="og:image"]',
  1688.       },
  1689.       {
  1690.         u: 'attachment.php',
  1691.         r: /attachment\.php.+attachmentid/,
  1692.       },
  1693.       {
  1694.         u: '||abload.de/image',
  1695.         q: '#image',
  1696.       },
  1697.       {
  1698.         u: '||deviantart.com/art/',
  1699.         s: (m, node) =>
  1700.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1701.             '' :
  1702.             m.input,
  1703.         q: [
  1704.           '#download-button[href*=".jpg"]',
  1705.           '#download-button[href*=".jpeg"]',
  1706.           '#download-button[href*=".gif"]',
  1707.           '#download-button[href*=".png"]',
  1708.           '#gmi-ResViewSizer_fullimg',
  1709.           'img.dev-content-full',
  1710.         ],
  1711.       },
  1712.       {
  1713.         u: '||dropbox.com/s',
  1714.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1715.         q: (text, doc) =>
  1716.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1717.       },
  1718.       {
  1719.         r: /[./]ebay\.[^/]+\/itm\//,
  1720.         q: text =>
  1721.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1722.             .replace(/~~60_\d+/, '~~60_57'),
  1723.       },
  1724.       {
  1725.         u: '||i.ebayimg.com/',
  1726.         s: (m, node) =>
  1727.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1728.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1729.       },
  1730.       {
  1731.         u: '||fastpic.',
  1732.         s: (m, node) => {
  1733.           const a = node.closest('a');
  1734.           const url = decodeURIComponent(Req.findImageUrl(a || node))
  1735.             .replace(/\/i(\d+)\.(\w+\.\w+\/)\w+/, '/$2$1')
  1736.             .replace(/^\w+:\/\/fastpic[^/]+((?:\/\d+){3})\/\w+(\/\w+\.\w+).*/,
  1737.               'https://fastpic.org/view$1$2.html');
  1738.           return a || url.includes('.png') ? url : [url, url.replace(/\.jpe?g/, '.png')];
  1739.         },
  1740.         q: 'img[src*="/big/"]',
  1741.       },
  1742.       {
  1743.         u: '||flickr.com/photos/',
  1744.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1745.         s: m =>
  1746.           m.input.indexOf('/sizes/') < 0 ?
  1747.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1748.             false,
  1749.         q: (text, doc) => {
  1750.           const links = $$('.sizes-list a', doc);
  1751.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1752.         },
  1753.         follow: true,
  1754.       },
  1755.       {
  1756.         u: '||flickr.com/photos/',
  1757.         r: /\/sizes\//,
  1758.         q: '#allsizes-photo > img',
  1759.       },
  1760.       {
  1761.         u: '||gfycat.com/',
  1762.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1763.         s: 'https://$1$3',
  1764.         q: 'meta[content$=".webm"], #webmsource, source[src$=".webm"], .actual-gif-image',
  1765.       },
  1766.       {
  1767.         u: [
  1768.           '||googleusercontent.com/proxy',
  1769.           '||googleusercontent.com/gadgets/proxy',
  1770.         ],
  1771.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1772.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1773.       },
  1774.       {
  1775.         u: [
  1776.           '||googleusercontent.com/',
  1777.           '||ggpht.com/',
  1778.         ],
  1779.         s: m => m.input.includes('webcache.') ? '' :
  1780.           m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1781.             .replace(/([&?]sz)?=[-\w]+([&#].*)?/, ''),
  1782.       },
  1783.       {
  1784.         u: '||gravatar.com/',
  1785.         r: /([a-z0-9]{32})/,
  1786.         s: 'https://gravatar.com/avatar/$1?s=200',
  1787.       },
  1788.       {
  1789.         u: '//gyazo.com/',
  1790.         r: /\bgyazo\.com\/\w{32,}(\.\w+)?/,
  1791.         s: (m, _, rule) => Ruler.toggle(rule, 'q', !m[1]) ? m.input : `https://i.${m[0]}`,
  1792.         _q: 'link[rel="image_src"]',
  1793.       },
  1794.       {
  1795.         u: '||hostingkartinok.com/show-image.php',
  1796.         q: '.image img',
  1797.       },
  1798.       {
  1799.         u: [
  1800.           '||imagecurl.com/images/',
  1801.           '||imagecurl.com/viewer.php',
  1802.         ],
  1803.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1804.         s: 'https://imagecurl.com/images/$1$2$3',
  1805.       },
  1806.       {
  1807.         u: '||imagebam.com/image/',
  1808.         q: 'meta[property="og:image"]',
  1809.         tabfix: true,
  1810.         xhr: hostname.includes('planetsuzy'),
  1811.       },
  1812.       {
  1813.         u: '||imageban.ru/thumbs',
  1814.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1815.         s: '$1out$2/$3/$4',
  1816.       },
  1817.       {
  1818.         u: [
  1819.           '||imageban.ru/show',
  1820.           '||imageban.net/show',
  1821.           '||ibn.im/',
  1822.         ],
  1823.         q: '#img_main',
  1824.       },
  1825.       {
  1826.         u: '||imageshack.us/img',
  1827.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1828.         s: 'https://$2/download/$1/$3$4',
  1829.       },
  1830.       {
  1831.         u: '||imageshack.us/i/',
  1832.         q: '#share-dl',
  1833.       },
  1834.       {
  1835.         u: '||imageteam.org/img',
  1836.         q: 'img[alt="image"]',
  1837.       },
  1838.       {
  1839.         u: [
  1840.           '||imagetwist.com/',
  1841.           '||imageshimage.com/',
  1842.         ],
  1843.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1844.         q: 'img.pic',
  1845.         xhr: true,
  1846.       },
  1847.       {
  1848.         u: '||imageupper.com/i/',
  1849.         q: '#img',
  1850.         xhr: true,
  1851.       },
  1852.       {
  1853.         u: '||imagevenue.com/',
  1854.         q: 'a[data-toggle="full"] img',
  1855.       },
  1856.       {
  1857.         u: '||imagezilla.net/show/',
  1858.         q: '#photo',
  1859.         xhr: true,
  1860.       },
  1861.       {
  1862.         u: [
  1863.           '||images-na.ssl-images-amazon.com/images/',
  1864.           '||media-imdb.com/images/',
  1865.         ],
  1866.         r: /images\/.+?\.jpg/,
  1867.         s: '/V1\\.?_.+?\\.//g',
  1868.       },
  1869.       {
  1870.         u: '||imgbox.com/',
  1871.         r: /\.com\/([a-z0-9]+)$/i,
  1872.         q: '#img',
  1873.         xhr: hostname !== 'imgbox.com',
  1874.       },
  1875.       {
  1876.         u: '||imgclick.net/',
  1877.         r: /\.net\/(\w+)/,
  1878.         q: 'img.pic',
  1879.         xhr: true,
  1880.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1881.       },
  1882.       {
  1883.         u: '.imgcredit.xyz/',
  1884.         r: /^https?(:.*\.xyz\/\d[\w/]+)\.md(.+)/,
  1885.         s: ['https$1$2', 'https$1.png'],
  1886.       },
  1887.       {
  1888.         u: [
  1889.           '||imgflip.com/i/',
  1890.           '||imgflip.com/gif/',
  1891.         ],
  1892.         r: /\/(i|gif)\/([^/?#]+)/,
  1893.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1894.       },
  1895.       {
  1896.         u: [
  1897.           '||imgur.com/a/',
  1898.           '||imgur.com/gallery/',
  1899.         ],
  1900.         s: 'gallery', // suppressing an unused network request for remote `document`
  1901.         async g() {
  1902.           let u = `https://imgur.com/ajaxalbums/getimages/${ai.url.split(/[/?#]/)[4]}/hit.json?all=true`;
  1903.           let info = tryJSON((await Req.gmXhr(u)).responseText) || 0;
  1904.           let images = (info.data || 0).images || [];
  1905.           if (!images[0]) {
  1906.             info = (await Req.gmXhr(ai.url)).responseText.match(/postDataJSON=(".*?")<|$/)[1];
  1907.             info = tryJSON(tryJSON(info)) || 0;
  1908.             images = info.media;
  1909.           }
  1910.           const items = [];
  1911.           for (const img of images) {
  1912.             const meta = img.metadata || img;
  1913.             items.push({
  1914.               url: img.url ||
  1915.                 (u = `https://i.imgur.com/${img.hash}`) && (
  1916.                   img.ext === '.gif' && img.animated !== false ?
  1917.                     [`${u}.webm`, `${u}.mp4`, u] :
  1918.                     u + img.ext
  1919.                 ),
  1920.               desc: [meta.title, meta.description].filter(Boolean).join(' - '),
  1921.             });
  1922.           }
  1923.           if (items[0] && info.title && !`${items[0].desc || ''}`.includes(info.title))
  1924.             items.title = info.title;
  1925.           return items;
  1926.         },
  1927.       },
  1928.       {
  1929.         u: '||imgur.com/',
  1930.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1931.         s: 'gallery',
  1932.         g: (text, doc, url, m) =>
  1933.           m[2].split(',').map(id => ({
  1934.             url: `https://i.${m[1]}${id}.jpg`,
  1935.           })),
  1936.       },
  1937.       {
  1938.         u: '||imgur.com/',
  1939.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.(mp4|[a-z]+))/i,
  1940.         s: (m, node) => {
  1941.           if (/memegen|random|register|search|signin/.test(m.input))
  1942.             return '';
  1943.           const a = node.closest('a');
  1944.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1945.             return false;
  1946.           // postfixes: huge, large, medium, thumbnail, big square, small square
  1947.           const id = m[3].replace(/(.{7})[hlmtbs]$/, '$1');
  1948.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1949.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1950.           return ext === 'webm' ?
  1951.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1952.             u + ext;
  1953.         },
  1954.       },
  1955.       {
  1956.         u: [
  1957.           '||instagr.am/p/',
  1958.           '||instagram.com/p/',
  1959.           '||instagram.com/tv/',
  1960.         ],
  1961.         s: m => m.input.substr(0, m.input.lastIndexOf('/')).replace('/liked_by', '') +
  1962.         '/?__a=1&__d=dis',
  1963.         q: m => (m = tryJSON(m)) && (
  1964.           m = pick(m, 'graphql.shortcode_media') || pick(m, 'items.0') || 0
  1965.         ) && (
  1966.           m.video_url ||
  1967.           m.display_url ||
  1968.           pick(m, 'video_versions.0.url') ||
  1969.           pick(m, 'carousel_media.0.image_versions2.candidates.0.url') ||
  1970.           pick(m, 'image_versions2.candidates.0.url')
  1971.         ),
  1972.         rect: 'div.PhotoGridMediaItem',
  1973.         c: m => (m = tryJSON(m)) && (
  1974.           pick(m, 'items.0.caption.text') ||
  1975.           pick(m, 'graphql.shortcode_media.edge_media_to_caption.edges.0.node.text') ||
  1976.           ''
  1977.         ),
  1978.       },
  1979.       {
  1980.         u: [
  1981.           '||livememe.com/',
  1982.           '||lvme.me/',
  1983.         ],
  1984.         r: /\.\w+\/([^.]+)$/,
  1985.         s: 'http://i.lvme.me/$1.jpg',
  1986.       },
  1987.       {
  1988.         u: '||lostpic.net/image',
  1989.         q: '.image-viewer-image img',
  1990.       },
  1991.       {
  1992.         u: '||makeameme.org/meme/',
  1993.         r: /\/meme\/([^/?#]+)/,
  1994.         s: 'https://media.makeameme.org/created/$1.jpg',
  1995.       },
  1996.       {
  1997.         u: '||photobucket.com/',
  1998.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1999.         s: 'https://i$1$3',
  2000.         xhr: !dotDomain.endsWith('.photobucket.com'),
  2001.       },
  2002.       {
  2003.         u: '||piccy.info/view3/',
  2004.         r: /(.+?\/view3)\/(.*)\//,
  2005.         s: '$1/$2/orig/',
  2006.         q: '#mainim',
  2007.       },
  2008.       {
  2009.         u: '||pimpandhost.com/image/',
  2010.         r: /(.+?\/image\/[0-9]+)/,
  2011.         s: '$1?size=original',
  2012.         q: 'img.original',
  2013.       },
  2014.       {
  2015.         u: [
  2016.           '||pixroute.com/',
  2017.           '||imgspice.com/',
  2018.         ],
  2019.         r: /\.html$/,
  2020.         q: 'img[id]',
  2021.         xhr: true,
  2022.       },
  2023.       {
  2024.         u: '||postima',
  2025.         r: /postima?ge?\.org\/image\/\w+/,
  2026.         q: [
  2027.           'a[href*="dl="]',
  2028.           '#main-image',
  2029.         ],
  2030.       },
  2031.       {
  2032.         u: [
  2033.           '||prntscr.com/',
  2034.           '||prnt.sc/',
  2035.         ],
  2036.         r: /\.\w+\/.+/,
  2037.         q: 'meta[property="og:image"]',
  2038.         xhr: true,
  2039.       },
  2040.       {
  2041.         u: '||radikal.ru/',
  2042.         r: /\.ru\/(fp|.+?\.html)|^(.+?)t\.jpg/,
  2043.         s: (m, node, rule) =>
  2044.           m[2] && /radikal\.ru[\w%/]+?(\.\w+)/.test($propUp(node, 'href')) ? m[2] + RegExp.$1 :
  2045.             Ruler.toggle(rule, 'q', m[1]) ? m.input : [m[2] + '.jpg', m[2] + '.png'],
  2046.         _q: text => text.match(/https?:\/\/\w+\.radikal\.ru[\w/]+\.(jpg|gif|png)/i)[0],
  2047.       },
  2048.       {
  2049.         u: '||tumblr.com',
  2050.         r: /_500\.jpg/,
  2051.         s: ['/_500/_1280/', ''],
  2052.       },
  2053.       {
  2054.         u: '||twimg.com/media/',
  2055.         r: /.+?format=(jpe?g|png|gif)/i,
  2056.         s: '$0&name=orig',
  2057.       },
  2058.       {
  2059.         u: '||twimg.com/media/',
  2060.         r: /.+?\.(jpe?g|png|gif)/i,
  2061.         s: '$0:orig',
  2062.       },
  2063.       {
  2064.         u: '||twimg.com/1/proxy',
  2065.         r: /t=([^&_]+)/i,
  2066.         s: m => atob(m[1]).match(/http.+/),
  2067.       },
  2068.       {
  2069.         u: '||twimg.com/',
  2070.         r: /\/profile_images/i,
  2071.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  2072.       },
  2073.       {
  2074.         u: '||pic.twitter.com/',
  2075.         r: /\.com\/[a-z0-9]+/i,
  2076.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  2077.         follow: true,
  2078.       },
  2079.       {
  2080.         u: '||twitpic.com/',
  2081.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  2082.         s: 'https://twitpic.com/show/large/$2',
  2083.       },
  2084.       {
  2085.         u: '||wiki',
  2086.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  2087.         s: '/\\/thumb(?=\\/)|' +
  2088.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  2089.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  2090.         xhr: !hostname.includes('wiki'),
  2091.       },
  2092.       {
  2093.         u: '||ytimg.com/vi/',
  2094.         r: /(.+?\/vi\/[^/]+)/,
  2095.         s: '$1/0.jpg',
  2096.         rect: '.video-list-item',
  2097.       },
  2098.       {
  2099.         u: '/viewer.php?file=',
  2100.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  2101.         s: '$1/images/$2',
  2102.         xhr: true,
  2103.       },
  2104.       {
  2105.         u: '/thumb_',
  2106.         r: /\/albums.+\/thumb_[^/]/,
  2107.         s: '/thumb_//',
  2108.       },
  2109.       {
  2110.         u: [
  2111.           '.th.jp',
  2112.           '.th.gif',
  2113.           '.th.png',
  2114.         ],
  2115.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  2116.         s: '$1$2',
  2117.         follow: true,
  2118.       },
  2119.       {
  2120.         r: RX_MEDIA_URL,
  2121.       },
  2122.     ];
  2123.  
  2124.     /** @type mpiv.HostRule[] */
  2125.     (Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean))
  2126.       .forEach(rule => {
  2127.         if (Array.isArray(rule.e))
  2128.           rule.e = rule.e.join(',');
  2129.       });
  2130.   },
  2131.  
  2132.   format(rule, {expand} = {}) {
  2133.     const s = Util.stringify(rule, null, ' ');
  2134.     return expand ?
  2135.       /* {"a": ...,
  2136.           "b": ...,
  2137.           "c": ...
  2138.          } */
  2139.       s.replace(/^{\s+/g, '{') :
  2140.       /* {"a": ..., "b": ..., "c": ...} */
  2141.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  2142.   },
  2143.  
  2144.   fromElement(el) {
  2145.     const text = el.textContent.trim();
  2146.     if (text.startsWith('{') &&
  2147.         text.endsWith('}') &&
  2148.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text)) {
  2149.       const rule = tryJSON(text);
  2150.       return rule && Object.keys(rule).some(k => /^[degqrsu]$/.test(k)) && rule;
  2151.     }
  2152.   },
  2153.  
  2154.   isValidE2: ([k, v]) => k.trim() && typeof v === 'string' && v.trim(),
  2155.  
  2156.   /** @returns mpiv.HostRule | Error | false | undefined */
  2157.   parse(rule) {
  2158.     const isBatchOp = this instanceof Map;
  2159.     try {
  2160.       if (typeof rule === 'string')
  2161.         rule = JSON.parse(rule);
  2162.       if ('d' in rule && typeof rule.d !== 'string')
  2163.         rule.d = undefined;
  2164.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  2165.         return false;
  2166.       if ('e' in rule) {
  2167.         let {e} = rule;
  2168.         if (typeof e === 'string') {
  2169.           e = e.trim();
  2170.         } else if (
  2171.           Array.isArray(e) && !e.every((s, i) => typeof s === 'string' && (e[i] = s.trim())) ||
  2172.           e && !Object.entries(e).filter(Ruler.isValidE2).length
  2173.         ) {
  2174.           throw new Error('Invalid syntax for "e". Examples: ' +
  2175.             '"e": ".image" or ' +
  2176.             '"e": [".image1", ".image2"] or ' +
  2177.             '"e": {".parent": ".image"} or ' +
  2178.             '"e": {".parent1": ".image1", ".parent2": ".image2"}');
  2179.         }
  2180.         if (isBatchOp) rule.e = e || undefined;
  2181.       }
  2182.       let compileTo = isBatchOp ? rule : {};
  2183.       if (rule.r)
  2184.         compileTo.r = new RegExp(rule.r, 'i');
  2185.       if (App.NOP)
  2186.         compileTo = {};
  2187.       for (const key of Object.keys(FN_ARGS)) {
  2188.         if (RX_HAS_CODE.test(rule[key])) {
  2189.           const fn = Util.newFunction(...FN_ARGS[key], rule[key]);
  2190.           if (fn !== App.NOP || !isBatchOp) {
  2191.             compileTo[key] = fn;
  2192.           } else if (isBatchOp) {
  2193.             this.set(rule, 'unsafe-eval');
  2194.           }
  2195.         }
  2196.       }
  2197.       return rule;
  2198.     } catch (err) {
  2199.       if (isBatchOp) {
  2200.         this.set(rule, err);
  2201.         return rule;
  2202.       } else {
  2203.         return err;
  2204.       }
  2205.     }
  2206.   },
  2207.  
  2208.   runC(text, doc = document) {
  2209.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  2210.     ai.caption = fn(text, doc);
  2211.   },
  2212.  
  2213.   runCHandler: {
  2214.     function: (text, doc) =>
  2215.       ai.rule.c(text || doc.documentElement.outerHTML, doc, ai.node, ai.rule),
  2216.     string: (text, doc) => {
  2217.       const el = $many(ai.rule.c, doc);
  2218.       return !el ? '' :
  2219.         el.getAttribute('content') ||
  2220.         el.getAttribute('title') ||
  2221.         el.textContent;
  2222.     },
  2223.     default: () =>
  2224.       (ai.tooltip || 0).text ||
  2225.       ai.node.alt ||
  2226.       $propUp(ai.node, 'title') ||
  2227.       Req.getFileName(
  2228.         ai.node.tagName === (ai.popup || 0).tagName
  2229.           ? ai.url
  2230.           : ai.node.src || $propUp(ai.node, 'href')),
  2231.   },
  2232.  
  2233.   runQ(text, doc, docUrl) {
  2234.     let url;
  2235.     if (isFunction(ai.rule.q)) {
  2236.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  2237.       if (Array.isArray(url)) {
  2238.         ai.urls = url.slice(1);
  2239.         url = url[0];
  2240.       }
  2241.     } else {
  2242.       const el = $many(ai.rule.q, doc);
  2243.       url = Req.findImageUrl(el, docUrl);
  2244.     }
  2245.     return url;
  2246.   },
  2247.  
  2248.   /** @returns {?boolean|mpiv.RuleMatchInfo} */
  2249.   runE(rule, node) {
  2250.     const {e} = rule;
  2251.     if (typeof e === 'string')
  2252.       return node.matches(e);
  2253.     let p, img, res, info;
  2254.     for (const selParent in e) {
  2255.       if ((p = node.closest(selParent)) && (img = $(e[selParent], p))) {
  2256.         if (img === node)
  2257.           res = true;
  2258.         else if ((info = RuleMatcher.adaptiveFind(img, {rules: [rule]})))
  2259.           return info;
  2260.       }
  2261.     }
  2262.     return res;
  2263.   },
  2264.  
  2265.   /** @returns {?Array} if falsy then the rule should be skipped */
  2266.   runS(node, rule, m) {
  2267.     let urls = [], u;
  2268.     for (const s of ensureArray(rule.s))
  2269.       urls.push(
  2270.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  2271.           isFunction(s) ? s(m, node, rule) :
  2272.             s);
  2273.     if (rule.q && urls.length > 1) {
  2274.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  2275.       return;
  2276.     }
  2277.     if (Array.isArray(u = urls[0]))
  2278.       u = [urls = u][0];
  2279.     return u === '' /* "stop all rules" */ ? urls
  2280.       : u && Array.from(new Set(urls), Util.decodeUrl);
  2281.   },
  2282.  
  2283.   /** @returns {boolean} */
  2284.   runU(rule, url) {
  2285.     const u = rule[SYM_U] || (rule[SYM_U] = UrlMatcher(rule.u));
  2286.     return u.fn.call(u.data, url);
  2287.   },
  2288.  
  2289.   substituteSingle(s, m) {
  2290.     if (!m || m.input == null) return s;
  2291.     if (s.startsWith('/') && !s.startsWith('//')) {
  2292.       const mid = s.search(/[^\\]\//) + 1;
  2293.       const end = s.lastIndexOf('/');
  2294.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  2295.       return m.input.replace(re, s.slice(mid + 1, end));
  2296.     }
  2297.     if (m.length && s.includes('$')) {
  2298.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  2299.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  2300.         for (let i = maxLength; i >= 0; i--) {
  2301.           const part = num.slice(0, i) | 0;
  2302.           if (part < m.length)
  2303.             return (m[part] || '') + num.slice(i);
  2304.         }
  2305.         return text;
  2306.       });
  2307.     }
  2308.     return s;
  2309.   },
  2310.  
  2311.   toggle(rule, prop, condition) {
  2312.     rule[prop] = condition ? rule[`_${prop}`] : null;
  2313.     return condition;
  2314.   },
  2315. };
  2316.  
  2317. const RuleMatcher = {
  2318.  
  2319.   /** @returns {Object} */
  2320.   adaptiveFind(node, opts) {
  2321.     const tn = node.tagName;
  2322.     const src = node.currentSrc || node.src || '';
  2323.     const isPic = tn === 'IMG' || tn === 'VIDEO' && Util.isVideoUrlExt(src);
  2324.     let a, info, url;
  2325.     // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  2326.     if (tn !== 'A') {
  2327.       url = isPic && !src.startsWith('data:') && Util.rel2abs(src);
  2328.       info = RuleMatcher.find(url, node, opts);
  2329.     }
  2330.     if (!info && (a = node.closest('A'))) {
  2331.       const ds = a.dataset;
  2332.       url = ds.expandedUrl || ds.fullUrl || ds.url || a.href || '';
  2333.       url = url.includes('//t.co/') ? 'https://' + a.textContent : url;
  2334.       url = !url.startsWith('data:') && url;
  2335.       info = RuleMatcher.find(url, a, opts);
  2336.     }
  2337.     if (!info && isPic)
  2338.       info = {node, rule: {}, url: src};
  2339.     return info;
  2340.   },
  2341.  
  2342.   /** @returns ?mpiv.RuleMatchInfo */
  2343.   find(url, node, {noHtml, rules, skipRules} = {}) {
  2344.     const tn = node.tagName;
  2345.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  2346.     const isPicOrLink = isPic || tn === 'A';
  2347.     let m, html, info;
  2348.     for (const rule of rules || Ruler.rules) {
  2349.       if (skipRules && skipRules.includes(rule) ||
  2350.           rule.u && (!url || !Ruler.runU(rule, url)) ||
  2351.           rule.e && !rules && !(info = Ruler.runE(rule, node)))
  2352.         continue;
  2353.       if (info && info.url)
  2354.         return info;
  2355.       if (rule.r)
  2356.         m = !noHtml && rule.html && (isPicOrLink || rule.e)
  2357.           ? rule.r.exec(html || (html = node.outerHTML))
  2358.           : url && rule.r.exec(url);
  2359.       else if (url)
  2360.         m = Object.assign([url], {index: 0, input: url});
  2361.       else
  2362.         m = [];
  2363.       if (!m)
  2364.         continue;
  2365.       if (rule.s === '')
  2366.         return {};
  2367.       let hasS = rule.s != null;
  2368.       // a rule with follow:true for the currently hovered IMG produced a URL,
  2369.       // but we'll only allow it to match rules without 's' in the nested find call
  2370.       if (isPic && !hasS && !skipRules)
  2371.         continue;
  2372.       hasS &= rule.s !== 'gallery';
  2373.       const urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  2374.       if (urls)
  2375.         return RuleMatcher.makeInfo(hasS, rule, m, node, skipRules, urls);
  2376.     }
  2377.   },
  2378.  
  2379.   /** @returns ?mpiv.RuleMatchInfo */
  2380.   makeInfo(hasS, rule, match, node, skipRules, urls) {
  2381.     let info;
  2382.     let url = `${urls[0]}`;
  2383.     const follow = url && hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule);
  2384.     if (url)
  2385.       url = Util.rel2abs(url);
  2386.     else
  2387.       info = {};
  2388.     if (follow)
  2389.       info = RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]});
  2390.     if (!info && (!follow || RX_MEDIA_URL.test(url))) {
  2391.       const xhr = cfg.xhr && rule.xhr;
  2392.       info = {
  2393.         match,
  2394.         node,
  2395.         rule,
  2396.         url,
  2397.         urls: urls.length > 1 ? urls.slice(1) : null,
  2398.         gallery: rule.g && Gallery.makeParser(rule.g),
  2399.         post: isFunction(rule.post) ? rule.post(match) : rule.post,
  2400.         xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  2401.       };
  2402.     }
  2403.     return info;
  2404.   },
  2405.  
  2406.   isFollowableUrl(url, rule) {
  2407.     const f = rule.follow;
  2408.     return isFunction(f) ? f(url) : f;
  2409.   },
  2410. };
  2411.  
  2412. const Req = {
  2413.  
  2414.   gmXhr(url, opts = {}) {
  2415.     if (ai.req)
  2416.       tryCatch.call(ai.req, ai.req.abort);
  2417.     return new Promise((resolve, reject) => {
  2418.       const {anonymous} = ai.rule || {};
  2419.       ai.req = GM.xmlHttpRequest(Object.assign({
  2420.         url,
  2421.         anonymous,
  2422.         withCredentials: !anonymous,
  2423.         method: 'GET',
  2424.         timeout: 30e3,
  2425.       }, opts, {
  2426.         onload: done,
  2427.         onerror: done,
  2428.         ontimeout() {
  2429.           ai.req = null;
  2430.           reject(`Timeout fetching ${url}`);
  2431.         },
  2432.       }));
  2433.       function done(r) {
  2434.         ai.req = null;
  2435.         if (r.status < 400 && !r.error)
  2436.           resolve(r);
  2437.         else
  2438.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2439.       }
  2440.     });
  2441.   },
  2442.  
  2443.   async getDoc(url) {
  2444.     if (!url) {
  2445.       // current document
  2446.       return {
  2447.         doc,
  2448.         finalUrl: location.href,
  2449.         responseText: doc.documentElement.outerHTML,
  2450.       };
  2451.     }
  2452.     const r = await (!ai.post ?
  2453.       Req.gmXhr(url) :
  2454.       Req.gmXhr(url, {
  2455.         method: 'POST',
  2456.         data: ai.post,
  2457.         headers: {
  2458.           'Content-Type': 'application/x-www-form-urlencoded',
  2459.           'Referer': url,
  2460.         },
  2461.       }));
  2462.     r.doc = $parseHtml(r.responseText);
  2463.     return r;
  2464.   },
  2465.  
  2466.   async getImage(url, pageUrl, xhr = ai.xhr) {
  2467.     ai.bufBar = false;
  2468.     ai.bufStart = now();
  2469.     const response = await Req.gmXhr(url, {
  2470.       responseType: 'blob',
  2471.       headers: {
  2472.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2473.         Referer: pageUrl || (isFunction(xhr) ? xhr() : url),
  2474.       },
  2475.       onprogress: Req.getImageProgress,
  2476.     });
  2477.     Bar.set(false);
  2478.     const type = Req.guessMimeType(response);
  2479.     let b = response.response;
  2480.     if (!b) throw 'Empty response';
  2481.     if (b.type !== type)
  2482.       b = b.slice(0, b.size, type);
  2483.     const res = xhr === 'blob'
  2484.       ? (ai.blobUrl = URL.createObjectURL(b))
  2485.       : await Req.blobToDataUrl(b);
  2486.     return [res, type.startsWith('video')];
  2487.   },
  2488.  
  2489.   getImageProgress(e) {
  2490.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2491.       ai.bufBar = true;
  2492.     if (ai.bufBar) {
  2493.       const pct = e.loaded / e.total * 100 | 0;
  2494.       const size = e.total / 1024 | 0;
  2495.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2496.     }
  2497.   },
  2498.  
  2499.   async findRedirect() {
  2500.     try {
  2501.       const {finalUrl} = await Req.gmXhr(ai.url, {
  2502.         method: 'HEAD',
  2503.         headers: {
  2504.           'Referer': location.href.split('#', 1)[0],
  2505.         },
  2506.       });
  2507.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2508.       if (!info || !info.url)
  2509.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2510.       Object.assign(ai, info);
  2511.       App.startSingle();
  2512.     } catch (e) {
  2513.       App.handleError(e);
  2514.     }
  2515.   },
  2516.  
  2517.   async saveFile() {
  2518.     const url = ai.popup.src || ai.popup.currentSrc;
  2519.     let name = Req.getFileName(ai.imageUrl || url);
  2520.     if (!name.includes('.'))
  2521.       name += '.jpg';
  2522.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2523.       $new('a', {href: url, download: name})
  2524.         .dispatchEvent(new MouseEvent('click'));
  2525.     } else {
  2526.       Status.set('+loading');
  2527.       const onload = () => Status.set('-loading');
  2528.       const gmDL = typeof GM_download === 'function';
  2529.       (gmDL ? GM_download : GM.xmlHttpRequest)({
  2530.         url,
  2531.         name,
  2532.         headers: {Referer: url},
  2533.         method: 'get', // polyfilling GM_download
  2534.         responseType: 'blob', // polyfilling GM_download
  2535.         overrideMimeType: 'application/octet-stream', // polyfilling GM_download
  2536.         onerror: e => {
  2537.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2538.           onload();
  2539.         },
  2540.         onprogress: Req.getImageProgress,
  2541.         onload({response}) {
  2542.           onload();
  2543.           if (!gmDL) { // polyfilling GM_download
  2544.             const a = Object.assign(document.createElement('a'), {
  2545.               href: URL.createObjectURL(response),
  2546.               download: name,
  2547.             });
  2548.             a.dispatchEvent(new MouseEvent('click'));
  2549.             setTimeout(URL.revokeObjectURL, 10e3, a.href);
  2550.           }
  2551.         },
  2552.       });
  2553.     }
  2554.   },
  2555.  
  2556.   getFileName(url) {
  2557.     return decodeURIComponent(url).split(/[#?&]/, 1)[0].split('/').pop();
  2558.   },
  2559.  
  2560.   blobToDataUrl(blob) {
  2561.     return new Promise((resolve, reject) => {
  2562.       const fr = new FileReader();
  2563.       fr.onload = () => resolve(fr.result);
  2564.       fr.onerror = reject;
  2565.       fr.readAsDataURL(blob);
  2566.     });
  2567.   },
  2568.  
  2569.   guessMimeType({responseHeaders, finalUrl}) {
  2570.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2571.         !RegExp.$1.includes('text/plain'))
  2572.       return RegExp.$1;
  2573.     const ext = Util.extractFileExt(finalUrl) || 'jpg';
  2574.     switch (ext.toLowerCase()) {
  2575.       case 'bmp': return 'image/bmp';
  2576.       case 'gif': return 'image/gif';
  2577.       case 'jpe': return 'image/jpeg';
  2578.       case 'jpeg': return 'image/jpeg';
  2579.       case 'jpg': return 'image/jpeg';
  2580.       case 'mp4': return 'video/mp4';
  2581.       case 'png': return 'image/png';
  2582.       case 'svg': return 'image/svg+xml';
  2583.       case 'tif': return 'image/tiff';
  2584.       case 'tiff': return 'image/tiff';
  2585.       case 'webm': return 'video/webm';
  2586.       default: return 'application/octet-stream';
  2587.     }
  2588.   },
  2589.  
  2590.   findImageUrl(n, url) {
  2591.     if (!n) return;
  2592.     let html;
  2593.     const path =
  2594.       n.getAttribute('data-src') || // lazy loaded src, whereas current `src` is an empty 1x1 pixel
  2595.       n.getAttribute('src') ||
  2596.       n.getAttribute('data-m4v') ||
  2597.       n.getAttribute('href') ||
  2598.       n.getAttribute('content') ||
  2599.       (html = n.outerHTML).includes('http') &&
  2600.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2601.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2602.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2603.   },
  2604. };
  2605.  
  2606. const Status = {
  2607.  
  2608.   set(status) {
  2609.     if (!status && !cfg.globalStatus) {
  2610.       if (ai.node) ai.node.removeAttribute(STATUS_ATTR);
  2611.       return;
  2612.     }
  2613.     const prefix = cfg.globalStatus ? PREFIX : '';
  2614.     const action = status && /^[+-]/.test(status) && status[0];
  2615.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2616.     const el = cfg.globalStatus ? doc.documentElement :
  2617.       name === 'edge' ? ai.popup :
  2618.         ai.node;
  2619.     if (!el) return;
  2620.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2621.     const oldValue = (el.getAttribute(attr) || '').trim();
  2622.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2623.     switch (action) {
  2624.       case '-':
  2625.         cls.delete(name);
  2626.         break;
  2627.       case false:
  2628.         for (const c of cls)
  2629.           if (c.startsWith(prefix) && c !== name)
  2630.             cls.delete(c);
  2631.       // fallthrough to +
  2632.       case '+':
  2633.         if (name)
  2634.           cls.add(name);
  2635.         break;
  2636.     }
  2637.     const newValue = [...cls].join(' ');
  2638.     if (newValue !== oldValue)
  2639.       el.setAttribute(attr, newValue);
  2640.   },
  2641.  
  2642.   loading(force) {
  2643.     if (!force) {
  2644.       clearTimeout(ai.timerStatus);
  2645.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2646.     } else if (!ai.popupLoaded) {
  2647.       Status.set('+loading');
  2648.     }
  2649.   },
  2650. };
  2651.  
  2652. const UrlMatcher = (() => {
  2653.   // string-to-regexp escaped chars
  2654.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2655.   // rx for '^' symbol in simple url match
  2656.   const RX_SEP = /[^\w%._-]/y;
  2657.   const RXS_SEP = RX_SEP.source;
  2658.   return match => {
  2659.     const results = [];
  2660.     for (const s of ensureArray(match)) {
  2661.       const pinDomain = s.startsWith('||');
  2662.       const pinStart = !pinDomain && s.startsWith('|');
  2663.       const endSep = s.endsWith('^');
  2664.       let fn;
  2665.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2666.       if (needle.includes('^')) {
  2667.         let plain = '';
  2668.         for (const part of needle.split('^'))
  2669.           if (part.length > plain.length)
  2670.             plain = part;
  2671.         const rx = new RegExp(
  2672.           (pinStart ? '^' : '') +
  2673.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2674.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2675.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2676.         needle = [plain, rx];
  2677.         fn = regexp;
  2678.       } else if (pinStart) {
  2679.         fn = endSep ? equals : starts;
  2680.       } else if (pinDomain) {
  2681.         const slashPos = needle.indexOf('/');
  2682.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2683.         needle = [needle, domain, slashPos > 0, endSep];
  2684.         fn = startsDomainPrescreen;
  2685.       } else if (endSep) {
  2686.         fn = ends;
  2687.       } else {
  2688.         fn = has;
  2689.       }
  2690.       results.push({fn, data: needle});
  2691.     }
  2692.     return results.length > 1 ?
  2693.       {fn: checkArray, data: results} :
  2694.       results[0];
  2695.   };
  2696.   function checkArray(s) {
  2697.     return this.some(checkArrayItem, s);
  2698.   }
  2699.   function checkArrayItem(item) {
  2700.     return item.fn.call(item.data, this);
  2701.   }
  2702.   function ends(s) {
  2703.     return s.endsWith(this) || (
  2704.       s.length > this.length &&
  2705.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2706.       endsWithSep(s));
  2707.   }
  2708.   function endsWithSep(s, pos = s.length - 1) {
  2709.     RX_SEP.lastIndex = pos;
  2710.     return RX_SEP.test(s);
  2711.   }
  2712.   function equals(s) {
  2713.     return s.startsWith(this) && (
  2714.       s.length === this.length ||
  2715.       s.length === this.length + 1 && endsWithSep(s));
  2716.   }
  2717.   function has(s) {
  2718.     return s.includes(this);
  2719.   }
  2720.   function regexp(s) {
  2721.     return s.includes(this[0]) && this[1].test(s);
  2722.   }
  2723.   function starts(s) {
  2724.     return s.startsWith(this);
  2725.   }
  2726.   function startsDomainPrescreen(url) {
  2727.     return url.includes(this[0]) && startsDomain.call(this, url);
  2728.   }
  2729.   function startsDomain(url) {
  2730.     let hostStart = url.indexOf('//');
  2731.     if (hostStart && url[hostStart - 1] !== ':')
  2732.       return;
  2733.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2734.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2735.     const [needle, domain, pinDomainEnd, endSep] = this;
  2736.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2737.     for (; ; start++) {
  2738.       start = host.indexOf(domain, start);
  2739.       if (start < 0)
  2740.         return;
  2741.       if (!start || host[start - 1] === '.')
  2742.         break;
  2743.     }
  2744.     start += hostStart;
  2745.     if (url.lastIndexOf(needle, start) !== start)
  2746.       return;
  2747.     const end = start + needle.length;
  2748.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2749.   }
  2750. })();
  2751.  
  2752. const Util = {
  2753.  
  2754.   addStyle(name, css) {
  2755.     const id = `${PREFIX}style:${name}`;
  2756.     const el = doc.getElementById(id) ||
  2757.                css && $new('style', {id});
  2758.     if (!el) return;
  2759.     if (el.textContent !== css)
  2760.       el.textContent = css;
  2761.     if (el.parentElement !== doc.head)
  2762.       doc.head.appendChild(el);
  2763.     return el;
  2764.   },
  2765.  
  2766.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2767.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2768.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2769.   },
  2770.  
  2771.   decodeHtmlEntities(s) {
  2772.     return s
  2773.       .replace(/&quot;/g, '"')
  2774.       .replace(/&apos;/g, '\'')
  2775.       .replace(/&lt;/g, '<')
  2776.       .replace(/&gt;/g, '>')
  2777.       .replace(/&amp;/g, '&');
  2778.   },
  2779.  
  2780.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2781.   decodeUrl(url) {
  2782.     if (!url || typeof url !== 'string') return url;
  2783.     const iPct = url.indexOf('%');
  2784.     const iColon = url.indexOf(':');
  2785.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2786.       decodeURIComponent(url) :
  2787.       url;
  2788.   },
  2789.  
  2790.   deepEqual(a, b) {
  2791.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2792.       return a === b;
  2793.     if (Array.isArray(a)) {
  2794.       return Array.isArray(b) &&
  2795.         a.length === b.length &&
  2796.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2797.     }
  2798.     const keys = Object.keys(a);
  2799.     return keys.length === Object.keys(b).length &&
  2800.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2801.   },
  2802.  
  2803.   extractFileExt: url => (url = RX_MEDIA_URL.exec(url)) && url[1],
  2804.  
  2805.   forceLayout(node) {
  2806.     // eslint-disable-next-line no-unused-expressions
  2807.     node.clientHeight;
  2808.   },
  2809.  
  2810.   formatError(e, rule) {
  2811.     const msg = e.message;
  2812.     const {url: u, imageUrl: iu} = ai;
  2813.     e = msg ? e :
  2814.       e.readyState && 'Request failed.' ||
  2815.       e.type === 'error' && `File can't be displayed.${
  2816.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2817.       }` ||
  2818.       e;
  2819.     let fmt;
  2820.     const res = [
  2821.       fmt = '%c%s%c', 'font-weight:bold', e, 'font-weight:normal',
  2822.       (fmt += '\nNode: %o', ai.node),
  2823.       (fmt += '\nRule: %o', rule),
  2824.       u && (fmt += '\nURL: %s', u),
  2825.       iu && iu !== u && (fmt += '\nFile: %s', iu),
  2826.       e.stack,
  2827.     ].filter(Boolean);
  2828.     res[0] = fmt;
  2829.     res.message = msg || e;
  2830.     return res;
  2831.   },
  2832.  
  2833.   getReactChildren(el, path) {
  2834.     if (isFF) el = el.wrappedJSObject || el;
  2835.     for (const k of Object.keys(el))
  2836.       if (typeof k === 'string' && k.startsWith('__reactProps'))
  2837.         return (el = el[k].children) && (path ? pick(el, path) : el);
  2838.   },
  2839.  
  2840.   isVideoUrl: url => url.startsWith('data:video') || Util.isVideoUrlExt(url),
  2841.  
  2842.   isVideoUrlExt: url => (url = Util.extractFileExt(url)) && /^(webm|mp4)$/i.test(url),
  2843.  
  2844.   newFunction(...args) {
  2845.     try {
  2846.       return App.NOP || (trustedScript
  2847.         // eslint-disable-next-line no-eval
  2848.         ? window.eval(trustedScript(`(function anonymous(${args.slice(0, -1).join(',')}){${args.slice(-1)[0]}})`))
  2849.         : new Function(...args)
  2850.       );
  2851.     } catch (e) {
  2852.       if (!RX_EVAL_BLOCKED.test(e.message))
  2853.         throw e;
  2854.       App.NOP = () => {};
  2855.       return App.NOP;
  2856.     }
  2857.   },
  2858.  
  2859.   rel2abs(rel, abs = location.href) {
  2860.     try {
  2861.       return /^(data:|blob:|[-\w]+:\/\/)/.test(rel) ? rel :
  2862.         new URL(rel, abs).href;
  2863.     } catch (e) {
  2864.       return rel;
  2865.     }
  2866.   },
  2867.  
  2868.   stringify(...args) {
  2869.     const p = Array.prototype;
  2870.     const {toJSON} = p;
  2871.     if (toJSON) p.toJSON = null;
  2872.     const res = JSON.stringify(...args);
  2873.     if (toJSON) p.toJSON = toJSON;
  2874.     return res;
  2875.   },
  2876.  
  2877.   suppressTooltip() {
  2878.     for (const node of [
  2879.       ai.node.parentNode,
  2880.       ai.node,
  2881.       ai.node.firstElementChild,
  2882.     ]) {
  2883.       const t = (node || 0).title;
  2884.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2885.         ai.tooltip = {node, text: t};
  2886.         node.title = '';
  2887.         break;
  2888.       }
  2889.     }
  2890.   },
  2891.  
  2892.   tabFixUrl() {
  2893.     const {tabfix = App.tabfix} = ai.rule;
  2894.     return tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2895.            flattenHtml(`data:text/html;charset=utf8,
  2896.       <style>
  2897.         body {
  2898.           margin: 0;
  2899.           padding: 0;
  2900.           background: #222;
  2901.         }
  2902.         .fit {
  2903.           overflow: hidden
  2904.         }
  2905.         .fit > img {
  2906.           max-width: 100vw;
  2907.           max-height: 100vh;
  2908.         }
  2909.         body > img {
  2910.           margin: auto;
  2911.           position: absolute;
  2912.           left: 0;
  2913.           right: 0;
  2914.           top: 0;
  2915.           bottom: 0;
  2916.         }
  2917.       </style>
  2918.       <body class=fit>
  2919.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2920.       </body>
  2921.     `).replace(/\x20?([:>])\x20/g, '$1').replace(/#/g, '%23');
  2922.   },
  2923. };
  2924.  
  2925. async function setup({rule} = {}) {
  2926.   if (!isFunction(doc.body.attachShadow)) {
  2927.     alert('Cannot show MPIV config dialog: the browser is probably too old.\n' +
  2928.           'You can edit the script\'s storage directly in your userscript manager.');
  2929.     return;
  2930.   }
  2931.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2932.   let uiCfg;
  2933.   let root = (elSetup || 0).shadowRoot;
  2934.   let {blankRuleElement} = setup;
  2935.   /** @type NodeList */
  2936.   const UI = new Proxy({}, {
  2937.     get(_, id) {
  2938.       return root.getElementById(id);
  2939.     },
  2940.   });
  2941.   if (!rule || !elSetup)
  2942.     init(await Config.load({save: true}));
  2943.   if (rule)
  2944.     installRule(rule);
  2945.  
  2946.   function init(data) {
  2947.     uiCfg = data;
  2948.     $remove(elSetup);
  2949.     elSetup = $new('div', {contentEditable: true});
  2950.     root = elSetup.attachShadow({mode: 'open'});
  2951.     root.append(...createSetupElement());
  2952.     initEvents();
  2953.     renderAll();
  2954.     renderCustomScales();
  2955.     renderRules();
  2956.     doc.body.appendChild(elSetup);
  2957.     requestAnimationFrame(() => {
  2958.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elSetup.clientHeight / 4) + 'px';
  2959.     });
  2960.   }
  2961.  
  2962.   function initEvents() {
  2963.     UI._apply.onclick = UI._cancel.onclick = UI._ok.onclick = UI._x.onclick = closeSetup;
  2964.     UI._export.onclick = e => {
  2965.       dropEvent(e);
  2966.       GM.setClipboard(Util.stringify(collectConfig(), null, '  '));
  2967.       UI._exportNotification.hidden = false;
  2968.       setTimeout(() => (UI._exportNotification.hidden = true), 1000);
  2969.     };
  2970.     UI._import.onclick = e => {
  2971.       dropEvent(e);
  2972.       const s = prompt('Paste settings:');
  2973.       if (s)
  2974.         init(new Config({data: s}));
  2975.     };
  2976.     UI._install.onclick = setupRuleInstaller;
  2977.     const /** @type {HTMLTextAreaElement} */ cssApp = UI._cssApp;
  2978.     UI._reveal.onclick = e => {
  2979.       e.preventDefault();
  2980.       cssApp.hidden = !cssApp.hidden;
  2981.       if (!cssApp.hidden) {
  2982.         if (!cssApp.value) {
  2983.           App.updateStyles();
  2984.           cssApp.value = App.globalStyle.trim();
  2985.           cssApp.setSelectionRange(0, 0);
  2986.         }
  2987.         cssApp.focus();
  2988.       }
  2989.     };
  2990.     UI.start.onchange = function () {
  2991.       UI.delay.closest('label').hidden =
  2992.         UI.preload.closest('label').hidden =
  2993.           this.value !== 'auto';
  2994.     };
  2995.     UI.start.onchange();
  2996.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  2997.     // color
  2998.     for (const el of $$('[type="color"]', root)) {
  2999.       el.oninput = colorOnInput;
  3000.       el.elSwatch = el.nextElementSibling;
  3001.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  3002.       el.elOpacity.elColor = el;
  3003.     }
  3004.     function colorOnInput() {
  3005.       this.elSwatch.style.setProperty('--color',
  3006.         Util.color(this.value, this.elOpacity.valueAsNumber));
  3007.     }
  3008.     // range
  3009.     for (const el of $$('[type="range"]', root)) {
  3010.       el.oninput = rangeOnInput;
  3011.       el.onblur = rangeOnBlur;
  3012.       el.addEventListener('focusin', rangeOnFocus);
  3013.     }
  3014.     function rangeOnBlur(e) {
  3015.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  3016.         this.elEdit.onblur(e);
  3017.     }
  3018.     function rangeOnFocus() {
  3019.       if (this.elEdit) return;
  3020.       const {min, max, step, value} = this;
  3021.       this.elEdit = $new('input', {
  3022.         value, min, max, step,
  3023.         className: 'range-edit',
  3024.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  3025.         type: 'number',
  3026.         elRange: this,
  3027.         onblur: rangeEditOnBlur,
  3028.         oninput: rangeEditOnInput,
  3029.       });
  3030.       this.insertAdjacentElement('afterend', this.elEdit);
  3031.     }
  3032.     function rangeOnInput() {
  3033.       this.title = (this.dataset.title || '').replace('$', this.value);
  3034.       if (this.elColor) this.elColor.oninput();
  3035.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  3036.     }
  3037.     // range-edit
  3038.     function rangeEditOnBlur(e) {
  3039.       if (e.relatedTarget !== this.elRange) {
  3040.         this.remove();
  3041.         this.elRange.elEdit = null;
  3042.       }
  3043.     }
  3044.     function rangeEditOnInput() {
  3045.       this.elRange.valueAsNumber = this.valueAsNumber;
  3046.       this.elRange.oninput();
  3047.     }
  3048.     // prevent the main page from interpreting key presses in inputs as hotkeys
  3049.     // which may happen since it sees only the outer <div> in the event |target|
  3050.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  3051.   }
  3052.  
  3053.   function closeSetup(event) {
  3054.     const isApply = this.id === '_apply';
  3055.     if (event && (this.id === '_ok' || isApply)) {
  3056.       cfg = uiCfg = collectConfig({save: true, clone: isApply});
  3057.       Ruler.init();
  3058.       Menu.reRegisterAlt();
  3059.       if (isApply) {
  3060.         renderCustomScales();
  3061.         UI._css.textContent = cfg._getCss();
  3062.         return;
  3063.       }
  3064.     }
  3065.     $remove(elSetup);
  3066.     elSetup = null;
  3067.   }
  3068.  
  3069.   function collectConfig({save, clone} = {}) {
  3070.     let data = {};
  3071.     for (const el of $$('input[id], select[id]', root))
  3072.       data[el.id] = el.type === 'checkbox' ? el.checked :
  3073.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  3074.           el.value || '';
  3075.     Object.assign(data, {
  3076.       css: UI.css.value.trim(),
  3077.       delay: UI.delay.valueAsNumber * 1000,
  3078.       hosts: collectRules(),
  3079.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  3080.       scales: UI.scales.value
  3081.         .trim()
  3082.         .split(/[,;]*\s+/)
  3083.         .map(x => x.replace(',', '.'))
  3084.         .filter(x => !isNaN(parseFloat(x))),
  3085.     });
  3086.     if (clone)
  3087.       data = JSON.parse(Util.stringify(data));
  3088.     return new Config({data, save});
  3089.   }
  3090.  
  3091.   function collectRules() {
  3092.     return [...UI._rules.children]
  3093.       .map(el => [el.value.trim(), el[RULE]])
  3094.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  3095.       .map(([s, json]) => json || s)
  3096.       .filter(Boolean);
  3097.   }
  3098.  
  3099.   function checkRule({target: el}) {
  3100.     let json, error, title;
  3101.     const prev = el.previousElementSibling;
  3102.     if (el.value) {
  3103.       json = Ruler.parse(el.value);
  3104.       error = json instanceof Error && (json.message || String(json));
  3105.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  3106.         !/^[-.a-z0-9]*$/i.test(json.d);
  3107.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  3108.         .filter(Boolean).join('\n');
  3109.       el.classList.toggle('invalid-domain', invalidDomain);
  3110.       el.classList.toggle('matching-domain', !!json.d && hostname.includes(json.d));
  3111.       if (!prev)
  3112.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3113.     } else if (prev) {
  3114.       prev.focus();
  3115.       el.remove();
  3116.     }
  3117.     el[RULE] = !error && json;
  3118.     el.title = title;
  3119.     el.setCustomValidity(error || '');
  3120.   }
  3121.  
  3122.   async function focusRule({target: el, relatedTarget: from}) {
  3123.     if (el === this)
  3124.       return;
  3125.     await new Promise(setTimeout);
  3126.     if (el[RULE] && el.rows < 2) {
  3127.       let i = el.selectionStart;
  3128.       const txt = el.value = Ruler.format(el[RULE], {expand: true});
  3129.       i += txt.slice(0, i).match(/^\s*/gm).reduce((len, s) => len + s.length, 0);
  3130.       el.setSelectionRange(i, i);
  3131.       el.rows = txt.match(/^/gm).length;
  3132.     }
  3133.     if (!this.contains(from))
  3134.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  3135.   }
  3136.  
  3137.   function installRule(rule) {
  3138.     const inputs = UI._rules.children;
  3139.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  3140.     if (!el) {
  3141.       el = inputs[0];
  3142.       el[RULE] = rule;
  3143.       el.value = Ruler.format(rule);
  3144.       el.hidden = false;
  3145.       const i = Math.max(0, collectRules().indexOf(rule));
  3146.       inputs[i].insertAdjacentElement('afterend', el);
  3147.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3148.     }
  3149.     const rect = el.getBoundingClientRect();
  3150.     if (rect.bottom < 0 ||
  3151.         rect.bottom > el.parentNode.offsetHeight)
  3152.       el.scrollIntoView();
  3153.     el.classList.add('highlight');
  3154.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  3155.     el.focus();
  3156.   }
  3157.  
  3158.   function renderRules() {
  3159.     const rules = UI._rules;
  3160.     rules.addEventListener('input', checkRule);
  3161.     rules.addEventListener('focusin', focusRule);
  3162.     rules.addEventListener('paste', focusRule);
  3163.     blankRuleElement =
  3164.       setup.blankRuleElement =
  3165.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  3166.     for (const rule of uiCfg.hosts || []) {
  3167.       const el = blankRuleElement.cloneNode();
  3168.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  3169.       rules.appendChild(el);
  3170.       checkRule({target: el});
  3171.     }
  3172.     const search = UI._search;
  3173.     search.oninput = () => {
  3174.       setup.search = search.value;
  3175.       const s = search.value.toLowerCase();
  3176.       for (const el of rules.children)
  3177.         el.hidden = s && !el.value.toLowerCase().includes(s);
  3178.     };
  3179.     search.value = setup.search || '';
  3180.     if (search.value)
  3181.       search.oninput();
  3182.   }
  3183.  
  3184.   function renderCustomScales() {
  3185.     UI.scales.value = uiCfg.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  3186.   }
  3187.  
  3188.   function renderAll() {
  3189.     for (const el of $$('input[id], select[id], textarea[id]', root))
  3190.       if (el.id in uiCfg)
  3191.         el[el.type === 'checkbox' ? 'checked' : 'value'] = uiCfg[el.id];
  3192.     for (const el of $$('input[type="range"]', root))
  3193.       el.oninput();
  3194.     for (const el of $$('a[href^="http"]', root))
  3195.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  3196.     UI.delay.valueAsNumber = uiCfg.delay / 1000;
  3197.     UI.scale.valueAsNumber = Math.round(clamp(uiCfg.scale - 1, 0, 1) * 100);
  3198.   }
  3199. }
  3200.  
  3201. function setupClickedRule(event) {
  3202.   let rule;
  3203.   const el = event.target.closest('blockquote, code, pre');
  3204.   if (el && !event.button && !eventModifiers(event) && (rule = Ruler.fromElement(el))) {
  3205.     dropEvent(event);
  3206.     setup({rule});
  3207.   }
  3208. }
  3209.  
  3210. async function setupRuleInstaller(e) {
  3211.   dropEvent(e);
  3212.   const parent = this.parentElement;
  3213.   parent.children._installLoading.hidden = false;
  3214.   this.remove();
  3215.   let rules;
  3216.  
  3217.   try {
  3218.     rules = extractRules(await Req.getDoc(this.href));
  3219.     const selector = $new('select', {
  3220.       size: 8,
  3221.       style: 'width: 100%',
  3222.       selectedIndex: findMatchingRuleIndex(),
  3223.       ondblclick: e => e.target !== selector && maybeSetup(e),
  3224.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  3225.     }, rules.map(renderRule));
  3226.     parent.children._installLoading.remove();
  3227.     parent.children._installHint.hidden = false;
  3228.     parent.appendChild(selector);
  3229.     requestAnimationFrame(() => {
  3230.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  3231.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  3232.       selector.focus();
  3233.     });
  3234.   } catch (e) {
  3235.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  3236.   }
  3237.  
  3238.   function extractRules({doc}) {
  3239.     // sort by name
  3240.     return [...$$('#wiki-body tr', doc)]
  3241.       .map(tr => [
  3242.         tr.cells[0].textContent.trim(),
  3243.         Ruler.fromElement(tr.cells[1]),
  3244.       ])
  3245.       .filter(([name, r]) =>
  3246.         name && r && (!r.d || hostname.includes(r.d)))
  3247.       .sort(([a], [b]) =>
  3248.         (a = a.toLowerCase()) < (b = b.toLowerCase()) ? -1 :
  3249.           a > b ? 1 :
  3250.             0);
  3251.   }
  3252.  
  3253.   function findMatchingRuleIndex() {
  3254.     const dottedHost = `.${hostname}.`;
  3255.     let maxCount = 0, maxIndex = 0, index = 0;
  3256.     for (const [name, {d}] of rules) {
  3257.       let count = !!(d && hostname.includes(d)) * 10;
  3258.       for (const part of name.toLowerCase().split(/[^a-z\d.-]+/i))
  3259.         count += dottedHost.includes(`.${part}.`) && part.length;
  3260.       if (count > maxCount) {
  3261.         maxCount = count;
  3262.         maxIndex = index;
  3263.       }
  3264.       index++;
  3265.     }
  3266.     return maxIndex;
  3267.   }
  3268.  
  3269.   function renderRule([name, rule]) {
  3270.     return $new('option', {
  3271.       textContent: name,
  3272.       title: Ruler.format(rule, {expand: true})
  3273.         .replace(/^{|\s*}$/g, '')
  3274.         .split('\n')
  3275.         .slice(0, 12)
  3276.         .map(renderTitleLine)
  3277.         .filter(Boolean)
  3278.         .join('\n'),
  3279.     });
  3280.   }
  3281.  
  3282.   function renderTitleLine(line, i, arr) {
  3283.     return (
  3284.       // show ... on 10th line if there are more lines
  3285.       i === 9 && arr.length > 10 ? '...' :
  3286.         i > 10 ? '' :
  3287.           // truncate to 100 chars
  3288.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  3289.             // strip the leading space
  3290.             .replace(/^\s/, ''));
  3291.   }
  3292.  
  3293.   function maybeSetup(e) {
  3294.     if (!eventModifiers(e))
  3295.       setup({rule: rules[e.currentTarget.selectedIndex][1]});
  3296.   }
  3297. }
  3298.  
  3299. const CSS_SETUP = /*language=css*/ `
  3300.   :host {
  3301.     all: initial !important;
  3302.     position: fixed !important;
  3303.     z-index: 2147483647 !important;
  3304.     top: 20px !important;
  3305.     right: 20px !important;
  3306.     padding: 1.5em !important;
  3307.     color: #000 !important;
  3308.     background: #eee !important;
  3309.     box-shadow: 5px 5px 25px 2px #000 !important;
  3310.     width: 33em !important;
  3311.     border: 1px solid black !important;
  3312.     display: flex !important;
  3313.     flex-direction: column !important;
  3314.   }
  3315.   main {
  3316.     font: 12px/15px sans-serif;
  3317.   }
  3318.   table {
  3319.     text-align:left;
  3320.   }
  3321.   ul {
  3322.     max-height: calc(100vh - 200px);
  3323.     margin: 0 0 15px 0;
  3324.     padding: 0;
  3325.     list-style: none;
  3326.   }
  3327.   li {
  3328.     margin: 0;
  3329.     padding: .25em 0;
  3330.   }
  3331.   li.options {
  3332.     display: flex;
  3333.     align-items: center;
  3334.     justify-content: space-between;
  3335.   }
  3336.   li.row {
  3337.     align-items: start;
  3338.     flex-wrap: wrap;
  3339.   }
  3340.   li.row label {
  3341.     display: flex;
  3342.     flex-direction: row;
  3343.     align-items: center;
  3344.   }
  3345.   li.row input {
  3346.     margin-right: .25em;
  3347.   }
  3348.   li.stretch label {
  3349.     flex: 1;
  3350.     white-space: nowrap;
  3351.   }
  3352.   li.stretch label > span {
  3353.     display: flex;
  3354.     flex-direction: row;
  3355.     flex: 1;
  3356.   }
  3357.   label {
  3358.     display: inline-flex;
  3359.     flex-direction: column;
  3360.   }
  3361.   label:not(:last-child) {
  3362.     margin-right: 1em;
  3363.   }
  3364.   input, select {
  3365.     min-height: 1.3em;
  3366.     box-sizing: border-box;
  3367.   }
  3368.   input[type=checkbox] {
  3369.     margin-left: 0;
  3370.   }
  3371.   input[type=number] {
  3372.     width: 4em;
  3373.   }
  3374.   input:not([type=checkbox])  {
  3375.     padding: 0 .25em;
  3376.   }
  3377.   input[type=range] {
  3378.     flex: 1;
  3379.     width: 100%;
  3380.     margin: 0 .25em;
  3381.     padding: 0;
  3382.     filter: saturate(0);
  3383.     opacity: .5;
  3384.   }
  3385.   u + input[type=range] {
  3386.     max-width: 3em;
  3387.   }
  3388.   input[type=range]:hover {
  3389.     filter: none;
  3390.     opacity: 1;
  3391.   }
  3392.   input[type=color] {
  3393.     position: absolute;
  3394.     width: calc(1.5em + 2px);
  3395.     opacity: 0;
  3396.     cursor: pointer;
  3397.   }
  3398.   u {
  3399.     position: relative;
  3400.     flex: 0 0 1.5em;
  3401.     height: 1.5em;
  3402.     border: 1px solid #888;
  3403.     pointer-events: none;
  3404.     color: #888;
  3405.     background-image:
  3406.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  3407.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  3408.     background-size: .5em .5em;
  3409.     background-position: 0 0, .25em .25em;
  3410.   }
  3411.   u::after {
  3412.     position: absolute;
  3413.     top: 0;
  3414.     left: 0;
  3415.     right: 0;
  3416.     bottom: 0;
  3417.     content: "";
  3418.     background-color: var(--color);
  3419.   }
  3420.   .range-edit {
  3421.     position: absolute;
  3422.     box-shadow: 0 0.25em 1em #000;
  3423.     z-index: 99;
  3424.   }
  3425.   textarea {
  3426.     resize: vertical;
  3427.     margin: 1px 0;
  3428.     font: 11px/1.25 Consolas, monospace;
  3429.   }
  3430.   :invalid {
  3431.     background-color: #f002;
  3432.     border-color: #800;
  3433.   }
  3434.   code {
  3435.     font-weight: bold;
  3436.   }
  3437.   a {
  3438.     text-decoration: none;
  3439.     color: LinkText;
  3440.     cursor: pointer;
  3441.   }
  3442.   a:hover {
  3443.     text-decoration: underline;
  3444.   }
  3445.   button {
  3446.     padding: .2em 1em;
  3447.     margin: 0 1em;
  3448.   }
  3449.   kbd {
  3450.     padding: 1px 6px;
  3451.     font-weight: bold;
  3452.     font-family: Consolas, monospace;
  3453.     border: 1px solid #888;
  3454.     border-radius: 3px;
  3455.     box-shadow: inset 1px 1px 5px #8888, .25px .5px 2px #0008;
  3456.   }
  3457.   .column {
  3458.     display: flex;
  3459.     flex-direction: column;
  3460.   }
  3461.   .highlight {
  3462.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  3463.     animation-fill-mode: both;
  3464.   }
  3465.   #_rules > * {
  3466.     word-break: break-all;
  3467.   }
  3468.   #_rules > :not(:focus) {
  3469.     overflow: hidden; /* prevents wrapping in FF */
  3470.   }
  3471.   .invalid-domain {
  3472.     opacity: .5;
  3473.   }
  3474.   .matching-domain {
  3475.     border-color: #56b8ff;
  3476.     background: #d7eaff;
  3477.   }
  3478.   #_x {
  3479.     position: absolute;
  3480.     top: 0;
  3481.     right: 0;
  3482.     padding: 4px 8px;
  3483.     cursor: pointer;
  3484.     user-select: none;
  3485.   }
  3486.   #_x:hover {
  3487.     background-color: #8884;
  3488.   }
  3489.   #_cssApp {
  3490.     color: seagreen;
  3491.   }
  3492.   #_exportNotification {
  3493.     color: green;
  3494.     font-weight: bold;
  3495.     position: absolute;
  3496.     left: 0;
  3497.     right: 0;
  3498.     bottom: 2px;
  3499.   }
  3500.   #_installHint {
  3501.     color: green;
  3502.   }
  3503.   #_usage, #_usage * {
  3504.     font: inherit;
  3505.     color: inherit;
  3506.   }
  3507.   #_usage th, #_usage kbd {
  3508.     font-weight: bold;
  3509.     white-space: pre-line;
  3510.   }
  3511.   @keyframes fade-in {
  3512.     from { background-color: deepskyblue }
  3513.     to {}
  3514.   }
  3515.   @media (prefers-color-scheme: dark) {
  3516.     :host {
  3517.       color: #aaa !important;
  3518.       background: #333 !important;
  3519.     }
  3520.     a {
  3521.       color: deepskyblue;
  3522.     }
  3523.     button {
  3524.       background: linear-gradient(-5deg, #333, #555);
  3525.       border: 1px solid #000;
  3526.       box-shadow: 0 2px 6px #181818;
  3527.       border-radius: 3px;
  3528.       cursor: pointer;
  3529.     }
  3530.     button:hover {
  3531.       background: linear-gradient(-5deg, #333, #666);
  3532.     }
  3533.     textarea, input, select {
  3534.       background: #111;
  3535.       color: #BBB;
  3536.       border: 1px solid #555;
  3537.     }
  3538.     input[type=checkbox] {
  3539.       filter: invert(1);
  3540.     }
  3541.     input[type=range] {
  3542.       filter: invert(1) saturate(0);
  3543.     }
  3544.     input[type=range]:hover {
  3545.       filter: invert(1);
  3546.     }
  3547.     kbd {
  3548.       border-color: #666;
  3549.     }
  3550.     @supports (-moz-appearance: none) {
  3551.       input[type=checkbox],
  3552.       input[type=range],
  3553.       input[type=range]:hover {
  3554.         filter: none;
  3555.       }
  3556.     }
  3557.     .range-edit {
  3558.       box-shadow: 0 .5em 1em .5em #000;
  3559.     }
  3560.     .matching-domain {
  3561.       border-color: #0065af;
  3562.       background: #032b58;
  3563.       color: #ddd;
  3564.     }
  3565.     #_cssApp {
  3566.       color: darkseagreen;
  3567.     }
  3568.     #_installHint {
  3569.       color: greenyellow;
  3570.     }
  3571.     ::-webkit-scrollbar {
  3572.       width: 14px;
  3573.       height: 14px;
  3574.       background: #333;
  3575.     }
  3576.     ::-webkit-scrollbar-button:single-button {
  3577.       background: radial-gradient(circle at center, #555 40%, #333 40%)
  3578.     }
  3579.     ::-webkit-scrollbar-track-piece {
  3580.       background: #444;
  3581.       border: 4px solid #333;
  3582.       border-radius: 8px;
  3583.     }
  3584.     ::-webkit-scrollbar-thumb {
  3585.       border: 3px solid #333;
  3586.       border-radius: 8px;
  3587.       background: #666;
  3588.     }
  3589.     ::-webkit-resizer {
  3590.       background: #111 linear-gradient(-45deg, transparent 3px, #888 3px, #888 4px, transparent 4px, transparent 6px, #888 6px, #888 7px, transparent 7px) no-repeat;
  3591.       border: 2px solid transparent;
  3592.     }
  3593.   }
  3594. `;
  3595.  
  3596. function createSetupElement() {
  3597.   const MPIV_BASE_URL = 'https://github.com/tophf/mpiv/wiki/';
  3598.   const scalesHint = 'Leave it empty and click Apply or OK to restore the default values.';
  3599.   const $newLink = (text, href, props) =>
  3600.     $new('a', Object.assign({target: '_blank'}, href && {href}, props), text);
  3601.   const $newCheck = (label, id, title = '', props) =>
  3602.     $new('label', Object.assign({title}, props), [
  3603.       $new('input', {id, type: 'checkbox'}),
  3604.       label,
  3605.     ]);
  3606.   const $newKbd = (str, tag = 'fragment') =>
  3607.     $new(tag, str.split(/({.+?})/).map(s => s[0] === '{' ? $new('kbd', s.slice(1, -1)) : s));
  3608.   const $newRange = (id, title = '', min = 0, max = 100, step = 1, type = 'range') =>
  3609.     $new('input', {id, min, max, step, type, 'data-title': title});
  3610.   const $newSelect = (label, id, values) =>
  3611.     $new('label', [
  3612.       label,
  3613.       $new('select', {id}, Object.entries(values).map(([k, v]) =>
  3614.         $new('option', Object.assign({value: k}, typeof v === 'object' ? v : {textContent: v})))),
  3615.     ]);
  3616.   const $newTable = obj =>
  3617.     $new('table#_usage', Object.entries(obj).map(([name, val]) =>
  3618.       $new('tr', name.startsWith('---') ? $new('td', '\xA0') : [
  3619.         $new('th', name),
  3620.         ...ensureArray(val).map(cell => cell instanceof Node ? cell : $newKbd(cell, 'td')),
  3621.       ])));
  3622.   return [
  3623.     $new('style', CSS_SETUP),
  3624.     $new('style#_css', cfg._getCss()),
  3625.     $new(`main#${PREFIX}setup`, [
  3626.       $new('div#_x', 'x'),
  3627.       $new('ul.column', [
  3628.         $new('details', {style: 'margin: -1em 0 0'}, [
  3629.           $new('summary', {style: 'cursor: pointer; font: bold 16px normal; margin-bottom: .5em'},
  3630.             $new('b', 'MPIV Help & hotkeys')),
  3631.           $newTable({
  3632.             'Activate': 'move mouse cursor over thumbnail',
  3633.             'Deactivate': 'move cursor off thumbnail, or click, or zoom out fully',
  3634.             'Prevent/freeze': 'hold down {Shift} while entering/leaving thumbnail',
  3635.             'Force-activate\n(videos or small pics)': 'hold {Ctrl} while entering image element',
  3636.             '---1': '',
  3637.             'Start zooming':
  3638.               'configurable: automatic or via right-click / {Shift} while popup is visible',
  3639.             'Zoom': 'mouse wheel',
  3640.             'Rotate': '{L} {r} keys (left or right)',
  3641.             'Flip/mirror': '{h} {v} keys (horizontally or vertically)',
  3642.             'Previous/next\nin album': 'mouse wheel, {j} {k} or {←} {→} keys',
  3643.             'Night mode toggle': '{n} key',
  3644.             '---2': '',
  3645.           }),
  3646.           $newTable({
  3647.             'Antialiasing on/off': ['{a}', $new('td', {rowSpan: 4}, 'key while popup is visible')],
  3648.             'Download': '{d}',
  3649.             'Mute/unmute': '{m}',
  3650.             'Open in tab': '{t}',
  3651.           }),
  3652.         ]),
  3653.         $new('li.options.stretch', [
  3654.           $newSelect('Popup shows on', 'start', {
  3655.             context: 'Right-click / \u2261 / Ctrl',
  3656.             contextMK: 'Right-click / \u2261',
  3657.             contextM: 'Right-click',
  3658.             contextK: {
  3659.               textContent: '\u2261 key',
  3660.               title: '\u2261 is the Menu key (near the right Ctrl)',
  3661.             },
  3662.             ctrl: 'Ctrl',
  3663.             auto: 'automatically',
  3664.           }),
  3665.           $new('label', ['after, sec', $newRange('delay', 'seconds', .05, 10, .05, 'number')]),
  3666.           $new('label', {title: '(if the full version of the hovered image is ...% larger)'},
  3667.             ['if larger, %', $newRange('scale', null, 0, 100, 1, 'number')]),
  3668.           $newSelect('Zoom activates on', 'zoom', {
  3669.             context: 'Right click / Shift',
  3670.             wheel: 'Wheel up / Shift',
  3671.             shift: 'Shift',
  3672.             auto: 'automatically',
  3673.           }),
  3674.           $newSelect('...and zooms to', 'fit', {
  3675.             'all': 'fit to window',
  3676.             'large': 'fit if larger',
  3677.             'no': '100%',
  3678.             '': {textContent: 'custom', title: 'Use custom scale factors'},
  3679.           }),
  3680.         ]),
  3681.         $new('li.options', [
  3682.           $new('label', ['Zoom step, %', $newRange('zoomStep', null, 100, 400, 1, 'number')]),
  3683.           $newSelect('When fully zoomed out:', 'zoomOut', {
  3684.             stay: 'stay in zoom mode',
  3685.             auto: 'stay if still hovered',
  3686.             unzoom: 'undo zoom mode',
  3687.             close: 'close popup',
  3688.           }),
  3689.           $new('label', {
  3690.             style: 'flex: 1',
  3691.             title: `
  3692.               Scale factors to use when “zooms to” selector is set to “custom”.
  3693.               0 = fit to window,
  3694.               0! = same as 0 but also removes smaller values,
  3695.               * after a value marks the default zoom factor, for example: 1*
  3696.               The popup won't shrink below the image's natural size or window size for bigger mages.
  3697.               ${scalesHint}
  3698.             `.trim().replace(/\n\s+/g, '\r'),
  3699.           }, ['Custom scale factors:', $new('input#scales', {placeholder: scalesHint})]),
  3700.         ]),
  3701.         $new('li.options.row', [
  3702.           $new([
  3703.             $newCheck('Centered*', 'center',
  3704.               '...or try to keep the original link/thumbnail unobscured by the popup'),
  3705.             $newCheck('Preload on hover*', 'preload',
  3706.               'Provides smoother experience but increases network traffic'),
  3707.             $newCheck('Run in image tabs', 'imgtab'),
  3708.             $newCheck('Require Ctrl key for <video>', 'videoCtrl'),
  3709.             $newCheck('Keep preview on blur*', 'keepOnBlur',
  3710.               'i.e. when mouse pointer moves outside the page'),
  3711.           ]),
  3712.           $new([
  3713.             $newCheck('Night mode', 'night'),
  3714.             $newCheck('Mute videos', 'mute'),
  3715.             $newCheck('Spoof hotlinking*`, ', 'xhr',
  3716.               'Disable only if you spoof the HTTP headers yourself'),
  3717.             $newCheck('Set status on <html>*', 'globalStatus',
  3718.               "Causes slowdowns so don't enable unless you explicitly use it in your custom CSS"),
  3719.             $newCheck('Keep playing video*', 'keepVids',
  3720.               '...until you press Esc key or click elsewhere'),
  3721.           ]),
  3722.           $new([
  3723.             $newCheck('Show when fully loaded*', 'waitLoad',
  3724.               '...or show a partial image while still loading'),
  3725.             $newCheck('Fade-in transition', 'uiFadein'),
  3726.             $newCheck('Fade-in transition in gallery', 'uiFadeinGallery'),
  3727.             $newCheck('Auto-start switch in menu*', 'startAltShown',
  3728.               "Show a switch for 'auto-start' mode in userscript manager menu"),
  3729.           ]),
  3730.         ]),
  3731.         $new('li.options.stretch', [
  3732.           $new('label', [
  3733.             'Background',
  3734.             $new('span', [
  3735.               $new('input#uiBackgroundColor', {type: 'color'}), $new('u'),
  3736.               $newRange('uiBackgroundOpacity', 'Opacity: $%'),
  3737.             ]),
  3738.           ]),
  3739.           $new('label', [
  3740.             'Border color, opacity, size',
  3741.             $new('span', [
  3742.               $new('input#uiBorderColor', {type: 'color'}), $new('u'),
  3743.               $newRange('uiBorderOpacity', 'Opacity: $%'),
  3744.               $newRange('uiBorder', 'Border size: $px', 0, 20),
  3745.             ]),
  3746.           ]),
  3747.           $new('label', [
  3748.             'Shadow color, opacity, size',
  3749.             $new('span', [
  3750.               $new('input#uiShadowColor', {type: 'color'}), $new('u'),
  3751.               $newRange('uiShadowOpacity', 'Opacity: $%'),
  3752.               $newRange('uiShadow', 'Shadow blur radius: $px\n"0" disables the shadow.', 0, 20),
  3753.             ]),
  3754.           ]),
  3755.           $new('label', ['Padding', $new('span', $newRange('uiPadding', 'Padding: $px'))]),
  3756.           $new('label', ['Margin', $new('span', $newRange('uiMargin', 'Margin: $px'))]),
  3757.         ]),
  3758.         $new('li', [
  3759.           $newLink('Custom CSS:', `${MPIV_BASE_URL}Custom-CSS`),
  3760.           ' e.g. ', $new('b', '#mpiv-popup { animation: none !important }'),
  3761.           $newLink('View the built-in CSS', '', {
  3762.             id: '_reveal',
  3763.             tabIndex: 0,
  3764.             style: 'float: right',
  3765.             title: 'You can copy parts of it to override them in your custom CSS',
  3766.           }),
  3767.           $new('.column', [
  3768.             $new('textarea#css', {spellcheck: false}),
  3769.             $new('textarea#_cssApp', {spellcheck: false, hidden: true, readOnly: true, rows: 30}),
  3770.           ]),
  3771.         ]),
  3772.         $new('li', {style: 'display: flex; justify-content: space-between;'}, [
  3773.           $new('div',
  3774.             $newLink('Custom host rules:', `${MPIV_BASE_URL}Custom-host-rules`)),
  3775.           $new('div', {style: 'white-space: pre-line'}, [
  3776.             'To disable, put any symbol except ', $new('code', 'a..z 0..9 - .'),
  3777.             '\nin "d" value, for example ', $new('code', '"d": "!foo.com"'),
  3778.           ]),
  3779.           $new('div',
  3780.             $new('input#_search',
  3781.               {type: 'search', placeholder: 'Search', style: 'width: 10em; margin-left: 1em'})),
  3782.         ]),
  3783.         $new('li', {
  3784.           style: 'margin-left: -3px; margin-right: -3px; overflow-y: auto; ' +
  3785.                  'padding-left: 3px; padding-right: 3px;',
  3786.         }, [
  3787.           $new('div#_rules.column',
  3788.             $new('textarea', {spellcheck: false, rows: 1})),
  3789.         ]),
  3790.         $new('li', [
  3791.           $new('div#_installLoading', {hidden: true}, 'Loading...'),
  3792.           $new('div#_installHint', {hidden: true}, [
  3793.             'Double-click the rule (or select and press Enter) to add it. ',
  3794.             'Click ', $new('code', 'Apply'), ' or ', $new('code', 'OK'), ' to confirm.',
  3795.           ]),
  3796.           $newLink('Install rule from repository...', `${MPIV_BASE_URL}Rules`, {id: '_install'}),
  3797.         ]),
  3798.       ]),
  3799.       $new('div', {style: 'text-align:center'}, [
  3800.         $new('button#_ok', {accessKey: 'o'}, 'OK'),
  3801.         $new('button#_apply', {accessKey: 'a'}, 'Apply'),
  3802.         $new('button#_import', {style: 'margin-right: 0'}, 'Import'),
  3803.         $new('button#_export', {style: 'margin-left: 0'}, 'Export'),
  3804.         $new('button#_cancel', 'Cancel'),
  3805.         $new('div#_exportNotification', {hidden: true}, 'Copied to clipboard'),
  3806.       ]),
  3807.     ]),
  3808.   ];
  3809. }
  3810.  
  3811. function createGlobalStyle() {
  3812.   App.globalStyle = /*language=CSS*/ (String.raw`
  3813. #\mpiv-bar {
  3814.   position: fixed;
  3815.   z-index: 2147483647;
  3816.   top: 0;
  3817.   left: 0;
  3818.   right: 0;
  3819.   opacity: 0;
  3820.   transition: opacity 1s ease .25s;
  3821.   text-align: center;
  3822.   font-family: sans-serif;
  3823.   font-size: 15px;
  3824.   font-weight: bold;
  3825.   background: #0005;
  3826.   color: white;
  3827.   padding: 4px 10px;
  3828.   text-shadow: .5px .5px 2px #000;
  3829. }
  3830. #\mpiv-bar.\mpiv-show,
  3831. #\mpiv-bar[data-force] {
  3832.   opacity: 1;
  3833. }
  3834. #\mpiv-bar[data-zoom]::after {
  3835.   content: " (" attr(data-zoom) ")";
  3836.   opacity: .8;
  3837. }
  3838. #\mpiv-popup.\mpiv-show {
  3839.   display: inline;
  3840. }
  3841. #\mpiv-popup {
  3842.   display: none;
  3843.   cursor: none;
  3844. ${cfg.uiFadein ? String.raw`
  3845.   animation: .2s \mpiv-fadein both;
  3846.   transition: box-shadow .25s, background-color .25s;
  3847.   ` : ''}
  3848. ${App.popupStyleBase = `
  3849.   border: none;
  3850.   box-sizing: border-box;
  3851.   background-size: cover;
  3852.   position: fixed;
  3853.   z-index: 2147483647;
  3854.   padding: 0;
  3855.   margin: 0;
  3856.   top: 0;
  3857.   left: 0;
  3858.   width: auto;
  3859.   height: auto;
  3860.   transform-origin: center;
  3861.   max-width: none;
  3862.   max-height: none;
  3863. `}
  3864. }
  3865. #\mpiv-popup.\mpiv-show {
  3866.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3867.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3868.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3869.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3870. }
  3871. #\mpiv-popup.\mpiv-show[loaded] {
  3872.   background-color: ${Util.color('Background')};
  3873.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3874. }
  3875. #\mpiv-popup[data-gallery-flip] {
  3876.   animation: none;
  3877.   transition: none;
  3878. }
  3879. #\mpiv-popup[${NOAA_ATTR}],
  3880. #\mpiv-popup.\mpiv-zoom-max {
  3881.   image-rendering: pixelated;
  3882. }
  3883. #\mpiv-popup.\mpiv-night:not(#\\0) {
  3884.   box-shadow: 0 0 0 9999px #000;
  3885. }
  3886. body:has(#\mpiv-popup.\mpiv-night)::-webkit-scrollbar {
  3887.   background: #000;
  3888. }
  3889. #\mpiv-setup {
  3890. }
  3891. @keyframes \mpiv-fadein {
  3892.   from {
  3893.     opacity: 0;
  3894.     border-color: transparent;
  3895.   }
  3896.   to {
  3897.     opacity: 1;
  3898.   }
  3899. }
  3900. ` + (cfg.globalStatus ? String.raw`
  3901. :root.\mpiv-loading:not(.\mpiv-preloading) *:hover {
  3902.   cursor: progress !important;
  3903. }
  3904. :root.\mpiv-edge #\mpiv-popup {
  3905.   cursor: default;
  3906. }
  3907. :root.\mpiv-error *:hover {
  3908.   cursor: not-allowed !important;
  3909. }
  3910. :root.\mpiv-ready *:hover,
  3911. :root.\mpiv-large *:hover {
  3912.   cursor: zoom-in !important;
  3913. }
  3914. :root.\mpiv-shift *:hover {
  3915.   cursor: default !important;
  3916. }
  3917. ` : String.raw`
  3918. [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]):hover {
  3919.   cursor: progress;
  3920. }
  3921. [\mpiv-status~="edge"]:hover {
  3922.   cursor: default;
  3923. }
  3924. [\mpiv-status~="error"]:hover {
  3925.   cursor: not-allowed;
  3926. }
  3927. [\mpiv-status~="ready"]:hover,
  3928. [\mpiv-status~="large"]:hover {
  3929.   cursor: zoom-in;
  3930. }
  3931. [\mpiv-status~="shift"]:hover {
  3932.   cursor: default;
  3933. }
  3934. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3935.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3936.   return App.globalStyle;
  3937. }
  3938.  
  3939. //#region Global utilities
  3940.  
  3941. const clamp = (v, min, max) =>
  3942.   v < min ? min : v > max ? max : v;
  3943.  
  3944. const compareNumbers = (a, b) =>
  3945.   a - b;
  3946.  
  3947. const flattenHtml = str =>
  3948.   str.trim().replace(/\n\s*/g, '');
  3949.  
  3950. const dropEvent = e =>
  3951.   (e.preventDefault(), e.stopPropagation());
  3952.  
  3953. const ensureArray = v =>
  3954.   Array.isArray(v) ? v : [v];
  3955.  
  3956. /** @param {KeyboardEvent} e */
  3957. const eventModifiers = e =>
  3958.   (e.altKey ? '!' : '') +
  3959.   (e.ctrlKey ? '^' : '') +
  3960.   (e.metaKey ? '#' : '') +
  3961.   (e.shiftKey ? '+' : '');
  3962.  
  3963. /** @param {KeyboardEvent} e */
  3964. const describeKey = e => eventModifiers(e) + (e.key && e.key.length > 1 ? e.key : e.code);
  3965.  
  3966. const isFunction = val => typeof val === 'function';
  3967.  
  3968. const isVideo = el => el && el.tagName === 'VIDEO';
  3969.  
  3970. const now = performance.now.bind(performance);
  3971.  
  3972. const sumProps = (...props) => {
  3973.   let sum = 0;
  3974.   for (const p of props)
  3975.     sum += parseFloat(p) || 0;
  3976.   return sum;
  3977. };
  3978.  
  3979. const tryCatch = function (fn, ...args) {
  3980.   try {
  3981.     return fn.apply(this, args);
  3982.   } catch (e) {}
  3983. };
  3984.  
  3985. const tryJSON = str =>
  3986.   tryCatch(JSON.parse, str);
  3987.  
  3988. const pick = (obj, path, fn) => {
  3989.   if (obj && path)
  3990.     for (const p of path.split('.'))
  3991.       if (obj) obj = obj[p]; else break;
  3992.   return fn && obj !== undefined ? fn(obj) : obj;
  3993. };
  3994.  
  3995. const $ = (sel, node = doc) =>
  3996.   node.querySelector(sel) || false;
  3997.  
  3998. const $$ = (sel, node = doc) =>
  3999.   node.querySelectorAll(sel);
  4000.  
  4001. const $new = (sel, props, children) => {
  4002.   if (typeof sel !== 'string') {
  4003.     children = props;
  4004.     props = sel;
  4005.     sel = '';
  4006.   }
  4007.   if (!children && props != null && ({}).toString.call(props) !== '[object Object]') {
  4008.     children = props;
  4009.     props = null;
  4010.   }
  4011.   const isFrag = sel === 'fragment';
  4012.   const [, tag, id, cls] = sel.match(/^(\w*)(?:#([^.]+))?(?:\.(.+))?$/);
  4013.   const el = isFrag ? doc.createDocumentFragment() : doc.createElement(tag || 'div');
  4014.   if (id) el.id = id;
  4015.   if (cls) el.className = cls.replace(/\./g, ' ');
  4016.   if (props) {
  4017.     for (const [k, v] of Object.entries(props)) {
  4018.       if (!k.startsWith('data-')) {
  4019.         el[k] = v;
  4020.       } else if (v != null) {
  4021.         el.setAttribute(k, v);
  4022.       }
  4023.     }
  4024.   }
  4025.   if (children != null) {
  4026.     if (Array.isArray(children))
  4027.       el.append(...children.filter(Boolean));
  4028.     else if (children instanceof Node)
  4029.       el.appendChild(children);
  4030.     else
  4031.       el.textContent = children;
  4032.   }
  4033.   return el;
  4034. };
  4035.  
  4036. const $css = (el, props) =>
  4037.   Object.entries(props).forEach(([k, v]) =>
  4038.     el.style.setProperty(k, v, 'important'));
  4039.  
  4040. const $parseHtml = str =>
  4041.   new DOMParser().parseFromString(str, 'text/html');
  4042.  
  4043. const $many = (q, doc) => {
  4044.   for (const selector of ensureArray(q)) {
  4045.     const el = selector && $(selector, doc);
  4046.     if (el)
  4047.       return el;
  4048.   }
  4049. };
  4050.  
  4051. const $prop = (sel, prop, node = doc) =>
  4052.   (node = $(sel, node)) && node[prop] || '';
  4053.  
  4054. const $propUp = (node, prop) =>
  4055.   (node = node.closest(`[${prop}]`)) &&
  4056.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  4057.   '';
  4058.  
  4059. const $remove = node =>
  4060.   node && node.remove();
  4061.  
  4062. //#endregion
  4063. //#region Init
  4064.  
  4065. (async () => {
  4066.   cfg = await Config.load({save: true});
  4067.   if (!doc.body) {
  4068.     await new Promise(resolve =>
  4069.       new MutationObserver((_, mo) => doc.body && (mo.disconnect(), resolve()))
  4070.         .observe(document, {subtree: true, childList: true}));
  4071.   }
  4072.   const el = doc.body.firstElementChild;
  4073.   if (el) {
  4074.     App.isImageTab = el === doc.body.lastElementChild && el.matches('img, video');
  4075.     App.isEnabled = cfg.imgtab || !App.isImageTab;
  4076.   }
  4077.   if (Menu) Menu.register();
  4078.   addEventListener('mouseover', Events.onMouseOver, true);
  4079.   addEventListener('contextmenu', Events.onContext, true);
  4080.   addEventListener('keydown', Events.onKeyDown, true);
  4081.   addEventListener('visibilitychange', Events.onVisibility, true);
  4082.   addEventListener('blur', Events.onVisibility, true);
  4083.   if (['gf.qytechs.cn', 'github.com'].includes(hostname))
  4084.     addEventListener('click', setupClickedRule, true);
  4085.   addEventListener('message', App.onMessage, true);
  4086. })();
  4087.  
  4088. if (window.trustedTypes) {
  4089.   const TT = window.trustedTypes;
  4090.   const CP = 'createPolicy';
  4091.   const createPolicy = TT[CP];
  4092.   TT[CP] = function ovr(name, opts) {
  4093.     let fn;
  4094.     const p = createPolicy.call(TT, name, opts);
  4095.     if ((trustedHTML || opts[fn = 'createHTML'] && (trustedHTML = p[fn].bind(p))) &&
  4096.         (trustedScript || opts[fn = 'createScript'] && (trustedScript = p[fn].bind(p))) &&
  4097.         TT[CP] === ovr)
  4098.       TT[CP] = createPolicy;
  4099.     return p;
  4100.   };
  4101. }
  4102.  
  4103. //#endregion

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