☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

当前为 2024-02-12 提交的版本，查看 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     1.2.36
  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.consoleFormat, ...fe.consoleArgs);
  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.     b.innerHTML = trustedHTML ? trustedHTML(label) : label;
  416.     if (!b.parentNode) {
  417.       doc.body.appendChild(b);
  418.       Util.forceLayout(b);
  419.     }
  420.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  421.   },
  422.  
  423.   show(isForced) {
  424.     clearTimeout(ai.timerBar);
  425.     ai.bar.style.removeProperty('opacity');
  426.     if (isForced)
  427.       ai.bar.dataset.force = '';
  428.     else
  429.       ai.timerBar = setTimeout(Bar.hide, 3000);
  430.   },
  431.  
  432.   hide(isForced) {
  433.     if (ai.bar && (isForced || ai.bar.dataset.force == null)) {
  434.       $css(ai.bar, {opacity: 0});
  435.       delete ai.bar.dataset.force;
  436.     }
  437.   },
  438.  
  439.   updateName() {
  440.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  441.     if (gi) {
  442.       const item = gi[i];
  443.       const noDesc = !gi.some(_ => _.desc);
  444.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  445.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  446.         item.desc,
  447.       ].filter(Boolean).join(' - ')}`;
  448.       Bar.set(c.trim() || ' ', 'gallery', true);
  449.     } else if ('caption' in ai) {
  450.       Bar.set(ai.caption, 'caption');
  451.     } else if (ai.tooltip) {
  452.       Bar.set(ai.tooltip.text, 'tooltip');
  453.     } else {
  454.       Bar.set(' ', 'info');
  455.     }
  456.   },
  457.  
  458.   updateDetails() {
  459.     if (!ai.bar) return;
  460.     const r = ai.rotate;
  461.     const zoom = ai.nwidth && `${
  462.       Math.round(ai.scale * 100)
  463.     }%${
  464.       ai.flipX || ai.flipY ? `, ${ai.flipX ? '⇆' : ''}${ai.flipY ? '⇅' : ''}` : ''
  465.     }${
  466.       r ? ', ' + (r > 180 ? r - 360 : r) + '°' : ''
  467.     }, ${
  468.       ai.nwidth
  469.     } x ${
  470.       ai.nheight
  471.     } px, ${
  472.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  473.     } MP, ${
  474.       Calc.aspectRatio(ai.nwidth, ai.nheight)
  475.     }`.replace(/\x20/g, '\xA0');
  476.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  477.       if (zoom) ai.bar.dataset.zoom = zoom;
  478.       else delete ai.bar.dataset.zoom;
  479.       Bar.show();
  480.     }
  481.   },
  482. };
  483.  
  484. const Calc = {
  485.  
  486.   aspectRatio(w, h) {
  487.     for (let rat = w / h, a, b = 0; ;) {
  488.       b++;
  489.       a = Math.round(w * b / h);
  490.       if (a > 10 && b > 10 || a > 100 || b > 100)
  491.         return rat.toFixed(2);
  492.       if (Math.abs(a / b - rat) < .01)
  493.         return `${a}:${b}`;
  494.     }
  495.   },
  496.  
  497.   frameSize(elFrame, wnd) {
  498.     if (!elFrame) return;
  499.     const r = elFrame.getBoundingClientRect();
  500.     const w = Math.min(r.right, wnd.innerWidth) - Math.max(r.left, 0);
  501.     const h = Math.min(r.bottom, wnd.innerHeight) - Math.max(r.top, 0);
  502.     const x = r.left < 0 ? -r.left : 0;
  503.     const y = r.top < 0 ? -r.top : 0;
  504.     return [w, h, x, y];
  505.   },
  506.  
  507.   generateScales(fit) {
  508.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  509.     const zoomStep = cfg.zoomStep / 100;
  510.     const arr = [scale];
  511.     if (fit !== 1) {
  512.       const diff = goal / scale;
  513.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  514.       const step = steps && Math.pow(diff, 1 / steps);
  515.       for (let i = steps; --i > 0;)
  516.         arr.push((scale *= step));
  517.       arr.push(scale = goal);
  518.     }
  519.     while ((scale *= zoomStep) <= ZOOM_MAX)
  520.       arr.push(scale);
  521.     return arr;
  522.   },
  523.  
  524.   measurePopup() {
  525.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  526.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  527.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  528.     if (p.clientWidth > nw) {
  529.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  530.       nh = ai.nheight = w / nw * nh | 0;
  531.       nw = ai.nwidth = w;
  532.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  533.     }
  534.     p.classList.add(`${PREFIX}show`);
  535.     p.removeAttribute('style');
  536.     const s = getComputedStyle(p);
  537.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  538.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  539.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  540.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  541.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  542.     ai.extras = {
  543.       inw, inh,
  544.       outw, outh,
  545.       o: o2 / 2,
  546.       w: inw + outw,
  547.       h: inh + outh,
  548.     };
  549.     const fit = Math.min(
  550.       (ai.view.w - ai.extras.w) / ai.nwidth,
  551.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  552.     const isCustom = !cfg.fit && cfg.scales.length;
  553.     let cutoff = Math.min(1, fit);
  554.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  555.     if (isCustom) {
  556.       const dst = [];
  557.       for (const scale of cfg.scales) {
  558.         const val = parseFloat(scale) || fit;
  559.         dst.push(val);
  560.         if (isCustom && typeof scale === 'string') {
  561.           if (scale.includes('!')) cutoff = val;
  562.           if (scale.includes('*')) scaleZoom = val;
  563.         }
  564.       }
  565.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  566.     } else {
  567.       ai.scales = Calc.generateScales(fit);
  568.     }
  569.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  570.     ai.scaleFit = fit;
  571.     ai.scaleZoom = scaleZoom;
  572.   },
  573.  
  574.   rect() {
  575.     let {node, rule} = ai;
  576.     let n = rule.rect && node.closest(rule.rect);
  577.     if (n) return n.getBoundingClientRect();
  578.     const nested = node.getElementsByTagName('*');
  579.     let maxArea = 0;
  580.     let maxBounds;
  581.     n = node;
  582.     for (let i = 0; n; n = nested[i++]) {
  583.       const bounds = n.getBoundingClientRect();
  584.       const area = bounds.width * bounds.height;
  585.       if (area > maxArea) {
  586.         maxArea = area;
  587.         maxBounds = bounds;
  588.         node = n;
  589.       }
  590.     }
  591.     return maxBounds;
  592.   },
  593.  
  594.   scaleBiggerThan(scale, i, arr) {
  595.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  596.   },
  597.  
  598.   scaleIndex(dir) {
  599.     const i = ai.scales.indexOf(ai.scale);
  600.     if (i >= 0) return i + dir;
  601.     for (
  602.       let len = ai.scales.length,
  603.         i = dir > 0 ? 0 : len - 1;
  604.       i >= 0 && i < len;
  605.       i += dir
  606.     ) {
  607.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  608.         return i;
  609.     }
  610.     return -1;
  611.   },
  612.  
  613.   scaleForFirstZoom(keepScale) {
  614.     const z = ai.scaleZoom;
  615.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  616.   },
  617.  
  618.   updateViewSize() {
  619.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  620.     ai.view = {w: view.clientWidth, h: view.clientHeight, x: 0, y: 0};
  621.     if (window === top) return;
  622.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  623.     if (w && h) {
  624.       ai.view = {w, h, x: 0, y: 0};
  625.     } else {
  626.       addEventListener('message', App.onMessageChild, true);
  627.       parent.postMessage(MSG.getViewSize, '*');
  628.     }
  629.   },
  630. };
  631.  
  632. class Config {
  633.  
  634.   constructor({data: c, save}) {
  635.     if (typeof c === 'string')
  636.       c = tryJSON(c);
  637.     if (typeof c !== 'object' || !c)
  638.       c = {};
  639.     const {DEFAULTS} = Config;
  640.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  641.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  642.         '';
  643.     if (c.version !== DEFAULTS.version) {
  644.       if (typeof c.hosts === 'string')
  645.         c.hosts = c.hosts.split('\n')
  646.           .map(s => tryJSON(s) || s)
  647.           .filter(Boolean);
  648.       if (c.close === true || c.close === false)
  649.         c.zoomOut = c.close ? 'auto' : 'stay';
  650.       for (const key in DEFAULTS)
  651.         if (typeof c[key] !== typeof DEFAULTS[key])
  652.           c[key] = DEFAULTS[key];
  653.       if (c.version === 3 && c.scales[0] === 0)
  654.         c.scales[0] = '0!';
  655.       for (const key in c)
  656.         if (!(key in DEFAULTS))
  657.           delete c[key];
  658.       c.version = DEFAULTS.version;
  659.       if (save)
  660.         GM.setValue('cfg', c);
  661.     }
  662.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  663.       App.globalStyle = '';
  664.     if (!Array.isArray(c.scales))
  665.       c.scales = [];
  666.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  667.     Object.assign(this, DEFAULTS, c);
  668.   }
  669.  
  670.   static async load(opts) {
  671.     opts.data = await GM.getValue('cfg');
  672.     return new Config(opts);
  673.   }
  674.  
  675.   _getCss() {
  676.     const {css} = this;
  677.     return css.includes('{') ? css : `#${PREFIX}-popup {${css}}`;
  678.   }
  679. }
  680.  
  681. Config.DEFAULTS = /** @type mpiv.Config */ Object.assign(Object.create(null), {
  682.   center: false,
  683.   css: '',
  684.   delay: 500,
  685.   fit: '',
  686.   globalStatus: false,
  687.   // prefer ' inside rules because " will be displayed as \"
  688.   // example: "img[src*='icon']"
  689.   hosts: [{
  690.     name: 'No popup for YouTube thumbnails',
  691.     d: 'www.youtube.com',
  692.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  693.     s: '',
  694.   }, {
  695.     name: 'No popup for SVG/PNG icons',
  696.     d: '',
  697.     e: "img[src*='icon']",
  698.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  699.     s: '',
  700.   }],
  701.   imgtab: false,
  702.   keepOnBlur: false,
  703.   keepVids: false,
  704.   mute: false,
  705.   night: false,
  706.   preload: false,
  707.   scale: 1.05,
  708.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  709.   start: 'auto',
  710.   startAlt: 'context',
  711.   startAltShown: false,
  712.   uiBackgroundColor: '#ffffff',
  713.   uiBackgroundOpacity: 100,
  714.   uiBorderColor: '#000000',
  715.   uiBorderOpacity: 100,
  716.   uiBorder: 0,
  717.   uiFadein: true,
  718.   uiFadeinGallery: true, // some computers show white background while loading so fading hides it
  719.   uiShadowColor: '#000000',
  720.   uiShadowOpacity: 80,
  721.   uiShadow: 20,
  722.   uiPadding: 0,
  723.   uiMargin: 0,
  724.   version: 6,
  725.   videoCtrl: true,
  726.   waitLoad: false,
  727.   xhr: true,
  728.   zoom: 'context',
  729.   zoomOut: 'auto',
  730.   zoomStep: 133,
  731. });
  732.  
  733. const CspSniffer = {
  734.  
  735.   /** @type {?Object<string,string[]>} */
  736.   csp: null,
  737.   selfUrl: location.origin + '/',
  738.  
  739.   // will be null when done
  740.   init() {
  741.     this.busy = new Promise(resolve => {
  742.       const xhr = new XMLHttpRequest();
  743.       xhr.open('get', location);
  744.       xhr.timeout = Math.max(2000, (performance.timing.responseEnd - performance.timeOrigin) * 2);
  745.       xhr.onreadystatechange = () => {
  746.         if (xhr.readyState >= xhr.HEADERS_RECEIVED) {
  747.           this.csp = this._parse([
  748.             xhr.getResponseHeader('content-security-policy'),
  749.             $prop('meta[http-equiv="Content-Security-Policy"]', 'content'),
  750.           ].filter(Boolean).join(','));
  751.           this.init = this.busy = xhr.onreadystatechange = null;
  752.           xhr.abort();
  753.           resolve();
  754.         }
  755.       };
  756.       xhr.send();
  757.     });
  758.   },
  759.  
  760.   async check(url, allowInit) {
  761.     if (allowInit && this.init) this.init();
  762.     if (this.busy) await this.busy;
  763.     const isVideo = Util.isVideoUrl(url);
  764.     let mode;
  765.     if (this.csp) {
  766.       const src = this.csp[isVideo ? 'media' : 'img'];
  767.       if (!src.some(this._srcMatches, url))
  768.         mode = [mode, 'blob', 'data'].find(m => src.includes(`${m}:`));
  769.     }
  770.     return [mode || ai.xhr, isVideo];
  771.   },
  772.  
  773.   _parse(csp) {
  774.     if (!csp) return;
  775.     const src = {};
  776.     const rx = /(?:^|[;,])\s*(?:(default|img|media|script)-src|require-(trusted)-types-for) ([^;,]+)/g;
  777.     for (let m; (m = rx.exec(csp));)
  778.       src[m[1] || m[2]] = m[3].trim().split(/\s+/);
  779.     if ((src.script || []).find(s => /^'nonce-(.+)'$/.test(s)))
  780.       nonce = RegExp.$1;
  781.     if ((src.trusted || []).includes("'script'"))
  782.       App.NOP = () => {};
  783.     if (!src.img) src.img = src.default || [];
  784.     if (!src.media) src.media = src.default || [];
  785.     for (const set of [src.img, src.media]) {
  786.       set.forEach((item, i) => {
  787.         if (item !== '*' && item.includes('*')) {
  788.           set[i] = new RegExp(
  789.             (/^\w+:/.test(item) ? '^' : '^\\w+://') +
  790.             item
  791.             .replace(/[.+?^$|()[\]{}]/g, '\\$&')
  792.             .replace(/(\\\.)?(\*)(\\\.)?/g, (_, a, b, c) =>
  793.               `${a ? '\\.?' : ''}[^:/]*${c ? '\\.?' : ''}`)
  794.             .replace(/[^/]$/, '$&/'));
  795.         }
  796.       });
  797.     }
  798.     return src;
  799.   },
  800.  
  801.   /** @this string */
  802.   _srcMatches(src) {
  803.     return src instanceof RegExp ? src.test(this) :
  804.       src === '*' ||
  805.       src && this.startsWith(src) && (src.endsWith('/') || this[src.length] === '/') ||
  806.       src === "'self'" && this.startsWith(CspSniffer.selfUrl);
  807.   },
  808. };
  809.  
  810. const Events = {
  811.  
  812.   ctrl: false,
  813.   hoverData: null,
  814.   hoverTimer: 0,
  815.   ignoreKeyHeld: false,
  816.  
  817.   onMouseOver(e) {
  818.     let node = e.target;
  819.     Events.ignoreKeyHeld = e.shiftKey;
  820.     if (!App.isEnabled ||
  821.         !App.canCloseVid() ||
  822.         e.shiftKey ||
  823.         ai.zoomed ||
  824.         node === ai.popup ||
  825.         node === doc.body ||
  826.         node === doc.documentElement ||
  827.         node === elSetup ||
  828.         ai.gallery && ai.rectHovered)
  829.       return;
  830.     if (node.shadowRoot)
  831.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  832.     // we don't want to process everything in the path of a quickly moving mouse cursor
  833.     Events.hoverData = {e, node, start: now()};
  834.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  835.     node.addEventListener('mouseout', Events.onMouseOutThrottled);
  836.   },
  837.  
  838.   onMouseOverThrottled(force) {
  839.     const {start, e, node, nodeOut} = Events.hoverData || {};
  840.     if (!node || node === nodeOut && (Events.hoverData = null, 1))
  841.       return;
  842.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  843.     const wait = force ? 0 : start + SETTLE_TIME - now();
  844.     const t = Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  845.     if (t)
  846.       return;
  847.     Events.hoverData = null;
  848.     if (!Ruler.rules)
  849.       Ruler.init();
  850.     const info = RuleMatcher.adaptiveFind(node);
  851.     if (info && info.url && info.node !== ai.node)
  852.       App.activate(info, e);
  853.   },
  854.  
  855.   onMouseOut(e) {
  856.     if (!e.relatedTarget && !cfg.keepOnBlur && !e.shiftKey && App.canCloseVid())
  857.       App.deactivate();
  858.   },
  859.  
  860.   onMouseOutThrottled(e) {
  861.     const d = Events.hoverData;
  862.     if (d) d.nodeOut = this;
  863.     this.removeEventListener('mouseout', Events.onMouseOutThrottled);
  864.     Events.hoverTimer = 0;
  865.   },
  866.  
  867.   onMouseOutShadow(e) {
  868.     const root = e.target.shadowRoot;
  869.     if (root) {
  870.       root.removeEventListener('mouseover', Events.onMouseOver);
  871.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  872.     }
  873.   },
  874.  
  875.   onMouseMove(e) {
  876.     Events.trackMouse(e);
  877.     if (e.shiftKey)
  878.       return;
  879.     if (!ai.zoomed && !ai.rectHovered && App.canCloseVid()) {
  880.       App.deactivate();
  881.     } else if (ai.zoomed) {
  882.       Popup.move();
  883.       const {cx, cy, view: {w, h}} = ai;
  884.       const bx = w / 6;
  885.       const by = h / 6;
  886.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  887.       Status.set(`${onEdge ? '+' : '-'}edge`);
  888.     }
  889.   },
  890.  
  891.   onMouseDown({shiftKey, button, target}) {
  892.     if (!button && target === ai.popup && ai.popup.controls && (shiftKey || !App.canCloseVid())) {
  893.       ai.controlled = ai.zoomed = true;
  894.     } else if (button === 2 || shiftKey) {
  895.       // Shift = ignore; RMB will be processed in onContext
  896.     } else {
  897.       App.deactivate({wait: true});
  898.       doc.addEventListener('mouseup', App.enable, {once: true});
  899.     }
  900.   },
  901.  
  902.   onMouseScroll(e) {
  903.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  904.     if (ai.zoomed) {
  905.       Events.zoomInOut(dir);
  906.     } else if (ai.gNum > 1 && ai.popup) {
  907.       Gallery.next(-dir);
  908.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  909.       App.toggleZoom();
  910.     } else if (App.canCloseVid()) {
  911.       App.deactivate();
  912.       return;
  913.     }
  914.     dropEvent(e);
  915.   },
  916.  
  917.   onKeyDown(e) {
  918.     // Synthesized events may be of the wrong type and not have a `key`
  919.     const key = describeKey(e);
  920.     const p = ai.popup;
  921.     if (!p && key === '^Control') {
  922.       addEventListener('keyup', Events.onKeyUp, true);
  923.       Events.ctrl = true;
  924.     }
  925.     if (!p && key === '^ContextMenu')
  926.       return Events.onContext.call(this, e);
  927.     if (!p || e.repeat)
  928.       return;
  929.     switch (key) {
  930.       case '+Shift':
  931.         if (ai.shiftKeyTime)
  932.           return;
  933.         ai.shiftKeyTime = now();
  934.         Status.set('+shift');
  935.         Bar.show(true);
  936.         if (isVideo(p))
  937.           p.controls = true;
  938.         return;
  939.       case 'KeyA':
  940.         if (!p.hasAttribute(NOAA_ATTR))
  941.           p.setAttribute(NOAA_ATTR, '');
  942.         else
  943.           p.removeAttribute(NOAA_ATTR);
  944.         break;
  945.       case 'ArrowRight':
  946.       case 'KeyJ':
  947.         Gallery.next(1);
  948.         break;
  949.       case 'ArrowLeft':
  950.       case 'KeyK':
  951.         Gallery.next(-1);
  952.         break;
  953.       case 'KeyD':
  954.         Req.saveFile();
  955.         break;
  956.       case 'KeyH': // flip horizontally
  957.       case 'KeyV': // flip vertically
  958.       case 'KeyL': // rotate left
  959.       case 'KeyR': // rotate right
  960.         if (!p)
  961.           return;
  962.         if (key === 'KeyH' || key === 'KeyV') {
  963.           const side = !!(ai.rotate % 180) ^ (key === 'KeyH') ? 'flipX' : 'flipY';
  964.           ai[side] = !ai[side];
  965.         } else {
  966.           ai.rotate = ((ai.rotate || 0) + 90 * (key === 'KeyL' ? -1 : 1) + 360) % 360;
  967.         }
  968.         Bar.updateDetails();
  969.         Popup.move();
  970.         break;
  971.       case 'KeyM':
  972.         if (isVideo(p))
  973.           p.muted = !p.muted;
  974.         break;
  975.       case 'KeyN':
  976.         ai.night = p.classList.toggle('mpiv-night');
  977.         break;
  978.       case 'KeyT':
  979.         GM.openInTab(Util.tabFixUrl() || p.src);
  980.         App.deactivate();
  981.         break;
  982.       case 'Minus':
  983.       case 'NumpadSubtract':
  984.         if (ai.zoomed) {
  985.           Events.zoomInOut(-1);
  986.         } else {
  987.           App.toggleZoom();
  988.         }
  989.         break;
  990.       case 'Equal':
  991.       case 'NumpadAdd':
  992.         if (ai.zoomed) {
  993.           Events.zoomInOut(1);
  994.         } else {
  995.           App.toggleZoom();
  996.         }
  997.         break;
  998.       case 'Escape':
  999.         App.deactivate({wait: true});
  1000.         break;
  1001.       case '!Alt':
  1002.         return;
  1003.       default:
  1004.         App.deactivate({wait: true});
  1005.         return;
  1006.     }
  1007.     dropEvent(e);
  1008.   },
  1009.  
  1010.   onKeyUp(e) {
  1011.     const p = ai.popup || false;
  1012.     if (e.key === 'Control') {
  1013.       if (!p) removeEventListener('keyup', Events.onKeyUp, true);
  1014.       setTimeout(() => (Events.ctrl = false));
  1015.     }
  1016.     if (p && e.key === 'Shift' && ai.shiftKeyTime) {
  1017.       Status.set('-shift');
  1018.       Bar.hide(true);
  1019.       if (p.controls)
  1020.         p.controls = false;
  1021.       // Chrome doesn't expose events for clicks on video controls so we'll guess
  1022.       if (ai.controlled || !isFF && now() - ai.shiftKeyTime > 500)
  1023.         ai.controlled = false;
  1024.       else if (p && (ai.zoomed || ai.rectHovered !== false))
  1025.         App.toggleZoom();
  1026.       else
  1027.         App.deactivate({wait: true});
  1028.       ai.shiftKeyTime = 0;
  1029.     } else if (
  1030.       describeKey(e) === 'Control' && !p && !Events.ignoreKeyHeld &&
  1031.       (cfg.start === 'ctrl' || cfg.start === 'context' || ai.rule.manual)
  1032.     ) {
  1033.       dropEvent(e);
  1034.       if (Events.hoverData) {
  1035.         Events.hoverData.e = e;
  1036.         Events.onMouseOverThrottled(true);
  1037.       }
  1038.       if (ai.node) {
  1039.         ai.force = true;
  1040.         App.start();
  1041.       }
  1042.     }
  1043.   },
  1044.  
  1045.   onContext(e) {
  1046.     if (Events.ignoreKeyHeld)
  1047.       return;
  1048.     const p = ai.popup;
  1049.     if (cfg.zoom === 'context' && p && App.toggleZoom()) {
  1050.       dropEvent(e);
  1051.     } else if (!p && (!cfg.videoCtrl || !isVideo(ai.node) || Events.ctrl) && (
  1052.       cfg.start === 'context' ||
  1053.       cfg.start === 'contextMK' ||
  1054.       cfg.start === 'contextM' && (e.button === 2) ||
  1055.       cfg.start === 'contextK' && (e.button !== 2) ||
  1056.       (cfg.start === 'auto' && ai.rule.manual)
  1057.     )) {
  1058.       // right-clicked on an image while the context menu is shown for something else
  1059.       if (!ai.node && !Events.hoverData)
  1060.         Events.onMouseOver(e);
  1061.       Events.onMouseOverThrottled(true);
  1062.       if (ai.node) {
  1063.         ai.force = true;
  1064.         App.start();
  1065.         dropEvent(e);
  1066.       }
  1067.     } else if (p) {
  1068.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  1069.     }
  1070.   },
  1071.  
  1072.   onVisibility(e) {
  1073.     Events.ctrl = false;
  1074.   },
  1075.  
  1076.   pierceShadow(node, x, y) {
  1077.     for (let root; (root = node.shadowRoot);) {
  1078.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  1079.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  1080.       const inner = root.elementFromPoint(x, y);
  1081.       if (!inner || inner === node)
  1082.         break;
  1083.       node = inner;
  1084.     }
  1085.     return node;
  1086.   },
  1087.  
  1088.   toggle(enable) {
  1089.     const onOff = enable ? 'addEventListener' : 'removeEventListener';
  1090.     const passive = {passive: true, capture: true};
  1091.     window[onOff]('mousemove', Events.onMouseMove, passive);
  1092.     window[onOff]('mouseout', Events.onMouseOut, passive);
  1093.     window[onOff]('mousedown', Events.onMouseDown, passive);
  1094.     window[onOff]('keyup', Events.onKeyUp, true);
  1095.     window[onOff](WHEEL_EVENT, Events.onMouseScroll, {passive: false, capture: true});
  1096.     ai.node.removeEventListener('mouseout', Events.onMouseOutThrottled);
  1097.   },
  1098.  
  1099.   trackMouse(e) {
  1100.     const cx = ai.cx = e.clientX;
  1101.     const cy = ai.cy = e.clientY;
  1102.     const r = ai.rect || (ai.rect = Calc.rect());
  1103.     ai.rectHovered =
  1104.       cx > r.left - 2 && cx < r.right + 2 &&
  1105.       cy > r.top - 2 && cy < r.bottom + 2;
  1106.   },
  1107.  
  1108.   zoomInOut(dir) {
  1109.     const i = Calc.scaleIndex(dir);
  1110.     const n = ai.scales.length;
  1111.     if (i >= 0 && i < n)
  1112.       ai.scale = ai.scales[i];
  1113.     const zo = cfg.zoomOut;
  1114.     if (i <= 0 && zo !== 'stay') {
  1115.       if (ai.scaleFit < ai.scale * .99) {
  1116.         ai.scales.unshift(ai.scale = ai.scaleFit);
  1117.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  1118.         App.deactivate({wait: true});
  1119.         return;
  1120.       }
  1121.       ai.zoomed = zo !== 'unzoom';
  1122.     } else {
  1123.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  1124.     }
  1125.     if (ai.zooming)
  1126.       ai.popup.classList.add(`${PREFIX}zooming`);
  1127.     Popup.move();
  1128.     Bar.updateDetails();
  1129.   },
  1130. };
  1131.  
  1132. const Gallery = {
  1133.  
  1134.   makeParser(g) {
  1135.     return isFunction(g) ? g : Gallery.defaultParser;
  1136.   },
  1137.  
  1138.   findIndex(gUrl) {
  1139.     const sel = gUrl.split('#')[1];
  1140.     if (!sel)
  1141.       return 0;
  1142.     if (/^\d+$/.test(sel))
  1143.       return parseInt(sel);
  1144.     for (let i = ai.gNum; i--;) {
  1145.       let {url} = ai.gItems[i];
  1146.       if (Array.isArray(url))
  1147.         url = url[0];
  1148.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  1149.         return i;
  1150.     }
  1151.     return 0;
  1152.   },
  1153.  
  1154.   next(dir) {
  1155.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  1156.     const item = ai.gItems[ai.gIndex];
  1157.     if (Array.isArray(item.url)) {
  1158.       ai.urls = item.url.slice(1);
  1159.       ai.url = item.url[0];
  1160.     } else {
  1161.       ai.urls = null;
  1162.       ai.url = item.url;
  1163.     }
  1164.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir || 1)].url)[0];
  1165.     App.startSingle();
  1166.     Bar.updateName();
  1167.   },
  1168.  
  1169.   nextIndex(dir) {
  1170.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  1171.   },
  1172.  
  1173.   defaultParser(text, doc, docUrl, m, rule) {
  1174.     const {g} = rule;
  1175.     const qEntry = g.entry;
  1176.     const qCaption = ensureArray(g.caption);
  1177.     const qImage = g.image || 'img';
  1178.     const qTitle = g.title;
  1179.     const fix =
  1180.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  1181.       (s => s.trim());
  1182.     const items = [...$$(qEntry || qImage, doc)]
  1183.       .map(processEntry)
  1184.       .filter(Boolean);
  1185.     items.title = processTitle();
  1186.     items.index =
  1187.       typeof g.index === 'string' &&
  1188.       Req.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  1189.       RX_HAS_CODE.test(g.index) &&
  1190.       Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  1191.       g.index;
  1192.     return items;
  1193.  
  1194.     function processEntry(entry) {
  1195.       const item = {};
  1196.       try {
  1197.         const img = qEntry ? $(qImage, entry) : entry;
  1198.         item.url = fix(Req.findImageUrl(img, docUrl), true);
  1199.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  1200.       } catch (e) {}
  1201.       return item.url && item;
  1202.     }
  1203.  
  1204.     function processCaption(selector) {
  1205.       const el = $(selector, this) ||
  1206.                  $orSelf(selector, this.previousElementSibling) ||
  1207.                  $orSelf(selector, this.nextElementSibling);
  1208.       return el && fix(el.textContent);
  1209.     }
  1210.  
  1211.     function processTitle() {
  1212.       const el = $(qTitle, doc);
  1213.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  1214.     }
  1215.  
  1216.     function $orSelf(selector, el) {
  1217.       if (el && !el.matches(qEntry))
  1218.         return el.matches(selector) ? el : $(selector, el);
  1219.     }
  1220.   },
  1221. };
  1222.  
  1223. const Menu = window === top && GM.registerMenuCommand && {
  1224.   curAltName: '',
  1225.   unreg: GM.unregisterMenuCommand,
  1226.   makeAltName: () => Menu.unreg
  1227.     ? `MPIV: auto-start is ${cfg.start === 'auto' ? 'ON' : 'OFF'}`
  1228.     : 'MPIV: toggle auto-start',
  1229.   register() {
  1230.     GM.registerMenuCommand('MPIV: configure', setup);
  1231.     Menu.registerAlt();
  1232.   },
  1233.   registerAlt() {
  1234.     if (cfg.startAltShown) {
  1235.       Menu.curAltName = Menu.makeAltName();
  1236.       GM.registerMenuCommand(Menu.curAltName, Menu.onAltToggled);
  1237.     }
  1238.   },
  1239.   reRegisterAlt() {
  1240.     const old = Menu.curAltName;
  1241.     if (old && Menu.unreg) Menu.unreg(old);
  1242.     if (!old || Menu.unreg) Menu.registerAlt();
  1243.   },
  1244.   onAltToggled() {
  1245.     const wasAuto = cfg.start === 'auto';
  1246.     if (wasAuto) {
  1247.       cfg.start = cfg.startAlt || (cfg.startAlt = 'context');
  1248.     } else {
  1249.       cfg.startAlt = cfg.start;
  1250.       cfg.start = 'auto';
  1251.     }
  1252.     Menu.reRegisterAlt();
  1253.   },
  1254. };
  1255.  
  1256. const Popup = {
  1257.  
  1258.   async create(src, pageUrl, error) {
  1259.     const inGallery = !cfg.uiFadeinGallery && ai.gItems && ai.popup && !ai.zooming &&
  1260.       (ai.popup.dataset.galleryFlip = '') === '';
  1261.     Popup.destroy();
  1262.     ai.imageUrl = src;
  1263.     if (!src)
  1264.       return;
  1265.     const myAi = ai;
  1266.     let [xhr, isVideo] = await CspSniffer.check(src, error);
  1267.     if (ai !== myAi)
  1268.       return;
  1269.     if (!xhr && error) {
  1270.       App.handleError(error);
  1271.       return;
  1272.     }
  1273.     Object.assign(ai, {pageUrl, xhr});
  1274.     if (xhr)
  1275.       [src, isVideo] = await Req.getImage(src, pageUrl, xhr).catch(App.handleError) || [];
  1276.     if (ai !== myAi || !src)
  1277.       return;
  1278.     const p = ai.popup = isVideo ? await PopupVideo.create() : $new('img');
  1279.     p.id = `${PREFIX}popup`;
  1280.     p.src = src;
  1281.     p.addEventListener('error', App.handleError);
  1282.     if ((ai.night = (ai.night != null ? ai.night : cfg.night)))
  1283.       p.classList.add('mpiv-night');
  1284.     if (ai.zooming)
  1285.       p.addEventListener('transitionend', Popup.onZoom);
  1286.     if (inGallery) {
  1287.       p.dataset.galleryFlip = '';
  1288.       p.setAttribute('loaded', '');
  1289.     }
  1290.     const poo = typeof p.showPopover === 'function' && $('[popover]:popover-open');
  1291.     ai.popover = poo && poo.getBoundingClientRect().width && ($css(poo, {opacity: 0}), poo) || null;
  1292.     doc.body.insertBefore(p, ai.bar && ai.bar.parentElement === doc.body && ai.bar || null);
  1293.     await 0;
  1294.     if (App.checkProgress({start: true}) === false)
  1295.       return;
  1296.     if (p.complete)
  1297.       Popup.onLoad.call(ai.popup);
  1298.     else if (!isVideo)
  1299.       p.addEventListener('load', Popup.onLoad, {once: true});
  1300.   },
  1301.  
  1302.   destroy() {
  1303.     const p = ai.popup;
  1304.     if (!p) return;
  1305.     p.removeEventListener('load', Popup.onLoad);
  1306.     p.removeEventListener('error', App.handleError);
  1307.     if (ai.popover) {
  1308.       ai.popover.style.removeProperty('opacity');
  1309.       ai.popover = null;
  1310.     }
  1311.     if (isFunction(p.pause))
  1312.       p.pause();
  1313.     if (ai.blobUrl)
  1314.       setTimeout(URL.revokeObjectURL, SETTLE_TIME, ai.blobUrl);
  1315.     p.remove();
  1316.     ai.zoomed = ai.popup = ai.popupLoaded = ai.blobUrl = null;
  1317.   },
  1318.  
  1319.   move() {
  1320.     let x, y;
  1321.     const {cx, cy, extras, view} = ai;
  1322.     const vw = view.w - extras.outw;
  1323.     const vh = view.h - extras.outh;
  1324.     const w0 = ai.scale * ai.nwidth + extras.inw;
  1325.     const h0 = ai.scale * ai.nheight + extras.inh;
  1326.     const isSwapped = ai.rotate % 180;
  1327.     const w = isSwapped ? h0 : w0;
  1328.     const h = isSwapped ? w0 : h0;
  1329.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  1330.       const r = ai.rect;
  1331.       const rx = (r.left + r.right) / 2;
  1332.       const ry = (r.top + r.bottom) / 2;
  1333.       if (vw - r.right - 40 > w || w < r.left - 40) {
  1334.         if (h < vh - 60)
  1335.           y = clamp(ry - h / 2, 30, vh - h - 30);
  1336.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  1337.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  1338.         if (w < vw - 60)
  1339.           x = clamp(rx - w / 2, 30, vw - w - 30);
  1340.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  1341.       }
  1342.     }
  1343.     if (x == null) {
  1344.       x = vw > w
  1345.         ? (vw - w) / 2 + view.x
  1346.         : (vw - w) * clamp(5 / 3 * ((cx - view.x) / vw - .2), 0, 1);
  1347.     }
  1348.     if (y == null) {
  1349.       y = vh > h
  1350.         ? (vh - h) / 2 + view.y
  1351.         : (vh - h) * clamp(5 / 3 * ((cy - view.y) / vh - .2), 0, 1);
  1352.     }
  1353.     const diff = isSwapped ? (w0 - h0) / 2 : 0;
  1354.     x += extras.o - diff;
  1355.     y += extras.o + diff;
  1356.     $css(ai.popup, {
  1357.       transform: `translate(${Math.round(x)}px, ${Math.round(y)}px) ` +
  1358.                  `rotate(${ai.rotate || 0}deg) ` +
  1359.                  `scale(${ai.flipX ? -1 : 1},${ai.flipY ? -1 : 1})`,
  1360.       width: `${Math.round(w0)}px`,
  1361.       height: `${Math.round(h0)}px`,
  1362.     });
  1363.   },
  1364.  
  1365.   onLoad() {
  1366.     if (this === ai.popup) {
  1367.       this.setAttribute('loaded', '');
  1368.       ai.popupLoaded = true;
  1369.       Status.set('-loading');
  1370.       if (ai.preloadUrl) {
  1371.         $new('img', {src: ai.preloadUrl});
  1372.         ai.preloadUrl = null;
  1373.       }
  1374.     }
  1375.   },
  1376.  
  1377.   onZoom() {
  1378.     this.classList.remove(`${PREFIX}zooming`);
  1379.   },
  1380. };
  1381.  
  1382. const PopupVideo = {
  1383.   async create() {
  1384.     ai.bufBar = false;
  1385.     ai.bufStart = now();
  1386.     return $new('video', {
  1387.       autoplay: true,
  1388.       controls: true,
  1389.       muted: cfg.mute || new AudioContext().state === 'suspended',
  1390.       loop: true,
  1391.       volume: clamp(+await GM.getValue('volume') || .5, 0, 1),
  1392.       onprogress: PopupVideo.progress,
  1393.       oncanplaythrough: PopupVideo.progressDone,
  1394.       onvolumechange: PopupVideo.rememberVolume,
  1395.     });
  1396.   },
  1397.  
  1398.   progress() {
  1399.     const {duration} = this;
  1400.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1401.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1402.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1403.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1404.     }
  1405.   },
  1406.  
  1407.   progressDone() {
  1408.     this.onprogress = this.oncanplaythrough = null;
  1409.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1410.       Bar.set(false);
  1411.     Popup.onLoad.call(this);
  1412.   },
  1413.  
  1414.   rememberVolume() {
  1415.     GM.setValue('volume', this.volume);
  1416.   },
  1417. };
  1418.  
  1419. const Ruler = {
  1420. /*
  1421.  'u' works only with URLs so it's ignored if 'html' is true
  1422.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1423.    |foo = url or text must start with foo
  1424.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1425.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1426.  'r' is checked only if 'u' matches first
  1427. */
  1428.   init() {
  1429.     const errors = new Map();
  1430.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1431.     const hasGMAE = typeof GM_addElement === 'function';
  1432.     const canEval = nonce || (nonce = ($('script[nonce]') || {}).nonce || '') || hasGMAE;
  1433.     const evalId = canEval && `${GM_info.script.name}${Math.random()}`;
  1434.     const evalRules = [];
  1435.     const evalCode = [`window[${JSON.stringify(evalId)}]=[`];
  1436.     for (const [rule, err] of errors.entries()) {
  1437.       if (!RX_EVAL_BLOCKED.test(err)) {
  1438.         App.handleError('Invalid custom host rule:', rule);
  1439.         continue;
  1440.       }
  1441.       if (canEval) {
  1442.         evalCode.push(evalRules.length ? ',' : '',
  1443.           '[', customRules.indexOf(rule), ',{',
  1444.           ...Object.keys(FN_ARGS)
  1445.             .map(k => RX_HAS_CODE.test(rule[k]) && `${k}(${FN_ARGS[k]}){${rule[k]}},`)
  1446.             .filter(Boolean),
  1447.           '}]');
  1448.       }
  1449.       evalRules.push(rule);
  1450.     }
  1451.     if (evalRules.length) {
  1452.       let result, wnd;
  1453.       if (canEval) {
  1454.         const GMAE = hasGMAE
  1455.           ? GM_addElement // eslint-disable-line no-undef
  1456.           : (tag, {textContent: txt}) => document.head.appendChild(
  1457.             Object.assign(document.createElement(tag), {
  1458.               textContent: trustedScript ? trustedScript(txt) : txt,
  1459.               nonce,
  1460.             }));
  1461.         evalCode.push(']; document.currentScript.remove();');
  1462.         GMAE('script', {textContent: evalCode.join('')});
  1463.         result = (wnd = unsafeWindow)[evalId] ||
  1464.           isFF && (wnd = wnd.wrappedJSObject)[evalId];
  1465.       }
  1466.       if (result) {
  1467.         for (const [index, fns] of result) {
  1468.           Object.assign(customRules[index], fns);
  1469.         }
  1470.         delete wnd[evalId];
  1471.       } else {
  1472.         console.warn('Site forbids compiling JS code in these custom rules', evalRules);
  1473.       }
  1474.     }
  1475.  
  1476.     // rules that disable previewing
  1477.     /** @type mpiv.HostRule[] */
  1478.     const disablers = [
  1479.       dotDomain.endsWith('.stackoverflow.com') && {
  1480.         e: '.post-tag, .post-tag img',
  1481.         s: '',
  1482.       },
  1483.     ];
  1484.  
  1485.     // optimization: a rule is created only when on domain
  1486.     /** @type mpiv.HostRule[] */
  1487.     const perDomain = [
  1488.       hostname.includes('startpage') && {
  1489.         r: /\boiu=(.+)/,
  1490.         s: '$1',
  1491.         follow: true,
  1492.       },
  1493.       dotDomain.endsWith('.4chan.org') && {
  1494.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1495.         q: '.op .fileText a',
  1496.         css: '#post-preview{display:none}',
  1497.       },
  1498.       hostname.includes('amazon.') && {
  1499.         r: /.+?images\/I\/.+?\./,
  1500.         s: m => {
  1501.           const uh = doc.getElementById('universal-hover');
  1502.           return uh ? '' : m[0] + 'jpg';
  1503.         },
  1504.         css: '#zoomWindow{display:none!important;}',
  1505.       },
  1506.       dotDomain.endsWith('.bing.com') && {
  1507.         e: 'a[m*="murl"]',
  1508.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1509.         s: '$1',
  1510.         html: true,
  1511.       },
  1512.       ...dotDomain.endsWith('.deviantart.com') && [{
  1513.         e: 'a[href*="/art/"] img[src*="/v1/"]',
  1514.         r: /^(.+)\/v1\/\w+\/[^/]+\/(.+)-\d+.(\.\w+)(\?.+)/,
  1515.         s: ([, base, name, ext, tok], node) => {
  1516.           let v = Util.getReactChildren(node.closest('a'), 'props.deviation.media.types');
  1517.           return v && (v = v.find(t => t.t === 'fullview')) && `${base}${
  1518.             v.c ? v.c.replace('<prettyName>', name)
  1519.               : `/v1/fill/w_${v.w},h_${v.h}/${name}-fullview${ext}`}${tok}`;
  1520.         },
  1521.       }, {
  1522.         e: '.dev-view-deviation img',
  1523.         s: () => [
  1524.           $('.dev-page-download').href,
  1525.           $('.dev-content-full').src,
  1526.         ].filter(Boolean),
  1527.       }, {
  1528.         e: 'a[data-hook=deviation_link]',
  1529.         q: 'link[as=image]',
  1530.       }] || [],
  1531.       dotDomain.endsWith('.discord.com') && {
  1532.         u: '||discordapp.net/external/',
  1533.         r: /\/https?\/(.+)/,
  1534.         s: '//$1',
  1535.         follow: true,
  1536.       },
  1537.       dotDomain.endsWith('.dropbox.com') && {
  1538.         r: /(.+?&size_mode)=\d+(.*)/,
  1539.         s: '$1=5$2',
  1540.       },
  1541.       dotDomain.endsWith('.facebook.com') && {
  1542.         e: 'a[href^="/photo/?"], a[href^="https://www.facebook.com/photo"]',
  1543.         s: (m, el) => (m = Util.getReactChildren(el.parentNode)) &&
  1544.           getObjProp(m, (m[0] ? '0.props.linkProps' : 'props') + '.passthroughProps.origSrc'),
  1545.       },
  1546.       dotDomain.endsWith('.flickr.com') &&
  1547.       pick(unsafeWindow, 'YUI_config.flickr.api.site_key') && {
  1548.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1549.         s: m => `https://www.flickr.com/services/rest/?${
  1550.           new URLSearchParams({
  1551.             photo_id: m[1],
  1552.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1553.             method: 'flickr.photos.getSizes',
  1554.             format: 'json',
  1555.             nojsoncallback: 1,
  1556.           }).toString()}`,
  1557.         q: text => JSON.parse(text).sizes.size.pop().source,
  1558.         anonymous: true,
  1559.       },
  1560.       dotDomain.endsWith('.github.com') && {
  1561.         r: new RegExp([
  1562.           /(avatars.+?&s=)\d+/,
  1563.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1564.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1565.         ].map(rx => rx.source).join('|')),
  1566.         s: m => `https://${
  1567.           m[1] ? `${m[1]}460` :
  1568.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1569.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1570.         }`,
  1571.       },
  1572.       isGoogleImages && {
  1573.         e: 'a[href*="imgres?imgurl="] img',
  1574.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1575.         follow: true,
  1576.       },
  1577.       isGoogleImages && {
  1578.         e: '[data-tbnid] a:not([href])',
  1579.         s: (m, a) => {
  1580.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1581.           new MutationObserver((_, mo) => {
  1582.             mo.disconnect();
  1583.             App.isEnabled = true;
  1584.             a.alt = a2.innerText;
  1585.             const {left, top} = a.getBoundingClientRect();
  1586.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1587.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1588.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1589.           a2.dispatchEvent(new MouseEvent('mouseup', {bubbles: true}));
  1590.         },
  1591.       },
  1592.       dotDomain.endsWith('.instagram.com') && {
  1593.         e: 'a[href*="/p/"],' +
  1594.           'article [role="button"][tabindex="0"],' +
  1595.           'article [role="button"][tabindex="0"] div',
  1596.         s: (m, node, rule) => {
  1597.           let data, a, n, img, src;
  1598.           if (location.pathname.startsWith('/p/') || location.pathname.startsWith('/tv/')) {
  1599.             img = $('img[srcset], video', node.parentNode);
  1600.             if (img && (isVideo(img) || parseFloat(img.sizes) > 900))
  1601.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1602.           }
  1603.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1604.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1605.           }
  1606.           const numPics = a && pick(data, 'edge_sidecar_to_children.edges.length') ||
  1607.             a && pick(data, 'carousel_media_count');
  1608.           Ruler.toggle(rule, 'q', data && data.is_video && !data.video_url);
  1609.           Ruler.toggle(rule, 'g', a && (numPics > 1 || /<\w+[^>]+carousel/i.test(a.innerHTML)));
  1610.           rule.follow = !data && !rule.g;
  1611.           rule._data = data;
  1612.           rule._img = img;
  1613.           return (
  1614.             !a && !src ? false :
  1615.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1&__d=dis' : ''}` :
  1616.                 data.video_url || data.display_url);
  1617.         },
  1618.         c: (html, doc, node, rule) =>
  1619.           rule._getCaption(rule._data) || (rule._img || 0).alt || '',
  1620.         follow: true,
  1621.         _q: 'meta[property="og:video"]',
  1622.         _g(text, doc, url, m, rule) {
  1623.           const json = tryJSON(text);
  1624.           const media =
  1625.             pick(json, 'graphql.shortcode_media') ||
  1626.             pick(json, 'items[0]');
  1627.           const items =
  1628.             pick(media, 'edge_sidecar_to_children.edges', res => res.map(e => ({
  1629.               url: e.node.video_url || e.node.display_url,
  1630.             }))) ||
  1631.             pick(media, 'carousel_media', res => res.map(e => ({
  1632.               url: pick(e, 'video_versions[0].url') || pick(e, 'image_versions2.candidates[0].url'),
  1633.             })));
  1634.           items.title = rule._getCaption(media) || '';
  1635.           return items;
  1636.         },
  1637.         _getCaption: data => pick(data, 'caption.text') ||
  1638.           pick(data, 'edge_media_to_caption.edges[0].node.text'),
  1639.       },
  1640.       ...dotDomain.endsWith('.reddit.com') && [{
  1641.         u: '||i.reddituploads.com/',
  1642.       }, {
  1643.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1644.         s: (m, node) => $propUp(node, 'data-url'),
  1645.       }, {
  1646.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1647.         s: 'https://i$1',
  1648.       }] || [],
  1649.       dotDomain.endsWith('.tumblr.com') && {
  1650.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1651.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1652.         follow: true,
  1653.       },
  1654.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1655.         e: 'a.media-item, a.js-media-image-link',
  1656.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1657.         follow: true,
  1658.       },
  1659.       dotDomain.endsWith('.twitter.com') && {
  1660.         e: '.grid-tweet > .media-overlay',
  1661.         s: (m, node) => node.previousElementSibling.src,
  1662.         follow: true,
  1663.       },
  1664.     ];
  1665.  
  1666.     /** @type mpiv.HostRule[] */
  1667.     const main = [
  1668.       {
  1669.         r: /[/?=](https?%3A%2F%2F[^&]+)/i,
  1670.         s: '$1',
  1671.         follow: true,
  1672.         onerror: 'skip',
  1673.       },
  1674.       {
  1675.         u: [
  1676.           '||500px.com/photo/',
  1677.           '||cl.ly/',
  1678.           '||cweb-pix.com/',
  1679.           '//ibb.co/',
  1680.           '||imgcredit.xyz/image/',
  1681.         ],
  1682.         r: /\.\w+\/.+/,
  1683.         q: 'meta[property="og:image"]',
  1684.       },
  1685.       {
  1686.         u: 'attachment.php',
  1687.         r: /attachment\.php.+attachmentid/,
  1688.       },
  1689.       {
  1690.         u: '||abload.de/image',
  1691.         q: '#image',
  1692.       },
  1693.       {
  1694.         u: '||deviantart.com/art/',
  1695.         s: (m, node) =>
  1696.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1697.             '' :
  1698.             m.input,
  1699.         q: [
  1700.           '#download-button[href*=".jpg"]',
  1701.           '#download-button[href*=".jpeg"]',
  1702.           '#download-button[href*=".gif"]',
  1703.           '#download-button[href*=".png"]',
  1704.           '#gmi-ResViewSizer_fullimg',
  1705.           'img.dev-content-full',
  1706.         ],
  1707.       },
  1708.       {
  1709.         u: '||dropbox.com/s',
  1710.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1711.         q: (text, doc) =>
  1712.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1713.       },
  1714.       {
  1715.         r: /[./]ebay\.[^/]+\/itm\//,
  1716.         q: text =>
  1717.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1718.             .replace(/~~60_\d+/, '~~60_57'),
  1719.       },
  1720.       {
  1721.         u: '||i.ebayimg.com/',
  1722.         s: (m, node) =>
  1723.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1724.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1725.       },
  1726.       {
  1727.         u: '||fastpic.',
  1728.         s: (m, node) => {
  1729.           const a = node.closest('a');
  1730.           const url = decodeURIComponent(Req.findImageUrl(a || node))
  1731.             .replace(/\/i(\d+)\.(\w+\.\w+\/)\w+/, '/$2$1')
  1732.             .replace(/^\w+:\/\/fastpic[^/]+((?:\/\d+){3})\/\w+(\/\w+\.\w+).*/,
  1733.               'https://fastpic.org/view$1$2.html');
  1734.           return a || url.includes('.png') ? url : [url, url.replace(/\.jpe?g/, '.png')];
  1735.         },
  1736.         q: 'img[src*="/big/"]',
  1737.       },
  1738.       {
  1739.         u: '||flickr.com/photos/',
  1740.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1741.         s: m =>
  1742.           m.input.indexOf('/sizes/') < 0 ?
  1743.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1744.             false,
  1745.         q: (text, doc) => {
  1746.           const links = $$('.sizes-list a', doc);
  1747.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1748.         },
  1749.         follow: true,
  1750.       },
  1751.       {
  1752.         u: '||flickr.com/photos/',
  1753.         r: /\/sizes\//,
  1754.         q: '#allsizes-photo > img',
  1755.       },
  1756.       {
  1757.         u: '||gfycat.com/',
  1758.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1759.         s: 'https://$1$3',
  1760.         q: 'meta[content$=".webm"], #webmsource, source[src$=".webm"], .actual-gif-image',
  1761.       },
  1762.       {
  1763.         u: [
  1764.           '||googleusercontent.com/proxy',
  1765.           '||googleusercontent.com/gadgets/proxy',
  1766.         ],
  1767.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1768.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1769.       },
  1770.       {
  1771.         u: [
  1772.           '||googleusercontent.com/',
  1773.           '||ggpht.com/',
  1774.         ],
  1775.         s: m => m.input.includes('webcache.') ? '' :
  1776.           m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1777.             .replace(/([&?]sz)?=[-\w]+([&#].*)?/, ''),
  1778.       },
  1779.       {
  1780.         u: '||gravatar.com/',
  1781.         r: /([a-z0-9]{32})/,
  1782.         s: 'https://gravatar.com/avatar/$1?s=200',
  1783.       },
  1784.       {
  1785.         u: '//gyazo.com/',
  1786.         r: /\bgyazo\.com\/\w{32,}(\.\w+)?/,
  1787.         s: (m, _, rule) => Ruler.toggle(rule, 'q', !m[1]) ? m.input : `https://i.${m[0]}`,
  1788.         _q: 'link[rel="image_src"]',
  1789.       },
  1790.       {
  1791.         u: '||hostingkartinok.com/show-image.php',
  1792.         q: '.image img',
  1793.       },
  1794.       {
  1795.         u: [
  1796.           '||imagecurl.com/images/',
  1797.           '||imagecurl.com/viewer.php',
  1798.         ],
  1799.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1800.         s: 'https://imagecurl.com/images/$1$2$3',
  1801.       },
  1802.       {
  1803.         u: '||imagebam.com/image/',
  1804.         q: 'meta[property="og:image"]',
  1805.         tabfix: true,
  1806.         xhr: hostname.includes('planetsuzy'),
  1807.       },
  1808.       {
  1809.         u: '||imageban.ru/thumbs',
  1810.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1811.         s: '$1out$2/$3/$4',
  1812.       },
  1813.       {
  1814.         u: [
  1815.           '||imageban.ru/show',
  1816.           '||imageban.net/show',
  1817.           '||ibn.im/',
  1818.         ],
  1819.         q: '#img_main',
  1820.       },
  1821.       {
  1822.         u: '||imageshack.us/img',
  1823.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1824.         s: 'https://$2/download/$1/$3$4',
  1825.       },
  1826.       {
  1827.         u: '||imageshack.us/i/',
  1828.         q: '#share-dl',
  1829.       },
  1830.       {
  1831.         u: '||imageteam.org/img',
  1832.         q: 'img[alt="image"]',
  1833.       },
  1834.       {
  1835.         u: [
  1836.           '||imagetwist.com/',
  1837.           '||imageshimage.com/',
  1838.         ],
  1839.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1840.         q: 'img.pic',
  1841.         xhr: true,
  1842.       },
  1843.       {
  1844.         u: '||imageupper.com/i/',
  1845.         q: '#img',
  1846.         xhr: true,
  1847.       },
  1848.       {
  1849.         u: '||imagevenue.com/',
  1850.         q: 'a[data-toggle="full"] img',
  1851.       },
  1852.       {
  1853.         u: '||imagezilla.net/show/',
  1854.         q: '#photo',
  1855.         xhr: true,
  1856.       },
  1857.       {
  1858.         u: [
  1859.           '||images-na.ssl-images-amazon.com/images/',
  1860.           '||media-imdb.com/images/',
  1861.         ],
  1862.         r: /images\/.+?\.jpg/,
  1863.         s: '/V1\\.?_.+?\\.//g',
  1864.       },
  1865.       {
  1866.         u: '||imgbox.com/',
  1867.         r: /\.com\/([a-z0-9]+)$/i,
  1868.         q: '#img',
  1869.         xhr: hostname !== 'imgbox.com',
  1870.       },
  1871.       {
  1872.         u: '||imgclick.net/',
  1873.         r: /\.net\/(\w+)/,
  1874.         q: 'img.pic',
  1875.         xhr: true,
  1876.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1877.       },
  1878.       {
  1879.         u: '.imgcredit.xyz/',
  1880.         r: /^https?(:.*\.xyz\/\d[\w/]+)\.md(.+)/,
  1881.         s: ['https$1$2', 'https$1.png'],
  1882.       },
  1883.       {
  1884.         u: [
  1885.           '||imgflip.com/i/',
  1886.           '||imgflip.com/gif/',
  1887.         ],
  1888.         r: /\/(i|gif)\/([^/?#]+)/,
  1889.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1890.       },
  1891.       {
  1892.         u: [
  1893.           '||imgur.com/a/',
  1894.           '||imgur.com/gallery/',
  1895.         ],
  1896.         s: 'gallery', // suppressing an unused network request for remote `document`
  1897.         async g() {
  1898.           let u = `https://imgur.com/ajaxalbums/getimages/${ai.url.split(/[/?#]/)[4]}/hit.json?all=true`;
  1899.           let info = tryJSON((await Req.gmXhr(u)).responseText) || 0;
  1900.           let images = (info.data || 0).images || [];
  1901.           if (!images[0]) {
  1902.             info = (await Req.gmXhr(ai.url)).responseText.match(/postDataJSON=(".*?")<|$/)[1];
  1903.             info = tryJSON(tryJSON(info)) || 0;
  1904.             images = info.media;
  1905.           }
  1906.           const items = [];
  1907.           for (const img of images) {
  1908.             const meta = img.metadata || img;
  1909.             items.push({
  1910.               url: img.url ||
  1911.                 (u = `https://i.imgur.com/${img.hash}`) && (
  1912.                   img.ext === '.gif' && img.animated !== false ?
  1913.                     [`${u}.webm`, `${u}.mp4`, u] :
  1914.                     u + img.ext
  1915.                 ),
  1916.               desc: [meta.title, meta.description].filter(Boolean).join(' - '),
  1917.             });
  1918.           }
  1919.           if (items[0] && info.title && !`${items[0].desc || ''}`.includes(info.title))
  1920.             items.title = info.title;
  1921.           return items;
  1922.         },
  1923.       },
  1924.       {
  1925.         u: '||imgur.com/',
  1926.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1927.         s: 'gallery',
  1928.         g: (text, doc, url, m) =>
  1929.           m[2].split(',').map(id => ({
  1930.             url: `https://i.${m[1]}${id}.jpg`,
  1931.           })),
  1932.       },
  1933.       {
  1934.         u: '||imgur.com/',
  1935.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.(mp4|[a-z]+))/i,
  1936.         s: (m, node) => {
  1937.           if (/memegen|random|register|search|signin/.test(m.input))
  1938.             return '';
  1939.           const a = node.closest('a');
  1940.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1941.             return false;
  1942.           // postfixes: huge, large, medium, thumbnail, big square, small square
  1943.           const id = m[3].replace(/(.{7})[hlmtbs]$/, '$1');
  1944.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1945.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1946.           return ext === 'webm' ?
  1947.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1948.             u + ext;
  1949.         },
  1950.       },
  1951.       {
  1952.         u: [
  1953.           '||instagr.am/p/',
  1954.           '||instagram.com/p/',
  1955.           '||instagram.com/tv/',
  1956.         ],
  1957.         s: m => m.input.substr(0, m.input.lastIndexOf('/')).replace('/liked_by', '') +
  1958.         '/?__a=1&__d=dis',
  1959.         q: m => (m = tryJSON(m)) && (
  1960.           m = pick(m, 'graphql.shortcode_media') || pick(m, 'items[0]') || 0
  1961.         ) && (
  1962.           m.video_url ||
  1963.           m.display_url ||
  1964.           pick(m, 'video_versions[0].url') ||
  1965.           pick(m, 'carousel_media[0].image_versions2.candidates[0].url') ||
  1966.           pick(m, 'image_versions2.candidates[0].url')
  1967.         ),
  1968.         rect: 'div.PhotoGridMediaItem',
  1969.         c: m => (m = tryJSON(m)) && (
  1970.           pick(m, 'items[0].caption.text') ||
  1971.           pick(m, 'graphql.shortcode_media.edge_media_to_caption.edges[0].node.text') ||
  1972.           ''
  1973.         ),
  1974.       },
  1975.       {
  1976.         u: [
  1977.           '||livememe.com/',
  1978.           '||lvme.me/',
  1979.         ],
  1980.         r: /\.\w+\/([^.]+)$/,
  1981.         s: 'http://i.lvme.me/$1.jpg',
  1982.       },
  1983.       {
  1984.         u: '||lostpic.net/image',
  1985.         q: '.image-viewer-image img',
  1986.       },
  1987.       {
  1988.         u: '||makeameme.org/meme/',
  1989.         r: /\/meme\/([^/?#]+)/,
  1990.         s: 'https://media.makeameme.org/created/$1.jpg',
  1991.       },
  1992.       {
  1993.         u: '||photobucket.com/',
  1994.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1995.         s: 'https://i$1$3',
  1996.         xhr: !dotDomain.endsWith('.photobucket.com'),
  1997.       },
  1998.       {
  1999.         u: '||piccy.info/view3/',
  2000.         r: /(.+?\/view3)\/(.*)\//,
  2001.         s: '$1/$2/orig/',
  2002.         q: '#mainim',
  2003.       },
  2004.       {
  2005.         u: '||pimpandhost.com/image/',
  2006.         r: /(.+?\/image\/[0-9]+)/,
  2007.         s: '$1?size=original',
  2008.         q: 'img.original',
  2009.       },
  2010.       {
  2011.         u: [
  2012.           '||pixroute.com/',
  2013.           '||imgspice.com/',
  2014.         ],
  2015.         r: /\.html$/,
  2016.         q: 'img[id]',
  2017.         xhr: true,
  2018.       },
  2019.       {
  2020.         u: '||postima',
  2021.         r: /postima?ge?\.org\/image\/\w+/,
  2022.         q: [
  2023.           'a[href*="dl="]',
  2024.           '#main-image',
  2025.         ],
  2026.       },
  2027.       {
  2028.         u: [
  2029.           '||prntscr.com/',
  2030.           '||prnt.sc/',
  2031.         ],
  2032.         r: /\.\w+\/.+/,
  2033.         q: 'meta[property="og:image"]',
  2034.         xhr: true,
  2035.       },
  2036.       {
  2037.         u: '||radikal.ru/',
  2038.         r: /\.ru\/(fp|.+?\.html)|^(.+?)t\.jpg/,
  2039.         s: (m, node, rule) =>
  2040.           m[2] && /radikal\.ru[\w%/]+?(\.\w+)/.test($propUp(node, 'href')) ? m[2] + RegExp.$1 :
  2041.             Ruler.toggle(rule, 'q', m[1]) ? m.input : [m[2] + '.jpg', m[2] + '.png'],
  2042.         _q: text => text.match(/https?:\/\/\w+\.radikal\.ru[\w/]+\.(jpg|gif|png)/i)[0],
  2043.       },
  2044.       {
  2045.         u: '||tumblr.com',
  2046.         r: /_500\.jpg/,
  2047.         s: ['/_500/_1280/', ''],
  2048.       },
  2049.       {
  2050.         u: '||twimg.com/media/',
  2051.         r: /.+?format=(jpe?g|png|gif)/i,
  2052.         s: '$0&name=orig',
  2053.       },
  2054.       {
  2055.         u: '||twimg.com/media/',
  2056.         r: /.+?\.(jpe?g|png|gif)/i,
  2057.         s: '$0:orig',
  2058.       },
  2059.       {
  2060.         u: '||twimg.com/1/proxy',
  2061.         r: /t=([^&_]+)/i,
  2062.         s: m => atob(m[1]).match(/http.+/),
  2063.       },
  2064.       {
  2065.         u: '||twimg.com/',
  2066.         r: /\/profile_images/i,
  2067.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  2068.       },
  2069.       {
  2070.         u: '||pic.twitter.com/',
  2071.         r: /\.com\/[a-z0-9]+/i,
  2072.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  2073.         follow: true,
  2074.       },
  2075.       {
  2076.         u: '||twitpic.com/',
  2077.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  2078.         s: 'https://twitpic.com/show/large/$2',
  2079.       },
  2080.       {
  2081.         u: '||wiki',
  2082.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  2083.         s: '/\\/thumb(?=\\/)|' +
  2084.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  2085.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  2086.         xhr: !hostname.includes('wiki'),
  2087.       },
  2088.       {
  2089.         u: '||ytimg.com/vi/',
  2090.         r: /(.+?\/vi\/[^/]+)/,
  2091.         s: '$1/0.jpg',
  2092.         rect: '.video-list-item',
  2093.       },
  2094.       {
  2095.         u: '/viewer.php?file=',
  2096.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  2097.         s: '$1/images/$2',
  2098.         xhr: true,
  2099.       },
  2100.       {
  2101.         u: '/thumb_',
  2102.         r: /\/albums.+\/thumb_[^/]/,
  2103.         s: '/thumb_//',
  2104.       },
  2105.       {
  2106.         u: [
  2107.           '.th.jp',
  2108.           '.th.gif',
  2109.           '.th.png',
  2110.         ],
  2111.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  2112.         s: '$1$2',
  2113.         follow: true,
  2114.       },
  2115.       {
  2116.         r: RX_MEDIA_URL,
  2117.       },
  2118.     ];
  2119.  
  2120.     /** @type mpiv.HostRule[] */
  2121.     (Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean))
  2122.       .forEach(rule => {
  2123.         if (Array.isArray(rule.e))
  2124.           rule.e = rule.e.join(',');
  2125.       });
  2126.   },
  2127.  
  2128.   format(rule, {expand} = {}) {
  2129.     const s = Util.stringify(rule, null, ' ');
  2130.     return expand ?
  2131.       /* {"a": ...,
  2132.           "b": ...,
  2133.           "c": ...
  2134.          } */
  2135.       s.replace(/^{\s+/g, '{') :
  2136.       /* {"a": ..., "b": ..., "c": ...} */
  2137.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  2138.   },
  2139.  
  2140.   fromElement(el) {
  2141.     const text = el.textContent.trim();
  2142.     if (text.startsWith('{') &&
  2143.         text.endsWith('}') &&
  2144.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text)) {
  2145.       const rule = tryJSON(text);
  2146.       return rule && Object.keys(rule).some(k => /^[degqrsu]$/.test(k)) && rule;
  2147.     }
  2148.   },
  2149.  
  2150.   isValidE2: ([k, v]) => k.trim() && typeof v === 'string' && v.trim(),
  2151.  
  2152.   /** @returns mpiv.HostRule | Error | false | undefined */
  2153.   parse(rule) {
  2154.     const isBatchOp = this instanceof Map;
  2155.     try {
  2156.       if (typeof rule === 'string')
  2157.         rule = JSON.parse(rule);
  2158.       if ('d' in rule && typeof rule.d !== 'string')
  2159.         rule.d = undefined;
  2160.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  2161.         return false;
  2162.       if ('e' in rule) {
  2163.         let {e} = rule;
  2164.         if (typeof e === 'string') {
  2165.           e = e.trim();
  2166.         } else if (
  2167.           Array.isArray(e) && !e.every((s, i) => typeof s === 'string' && (e[i] = s.trim())) ||
  2168.           e && !Object.entries(e).filter(Ruler.isValidE2).length
  2169.         ) {
  2170.           throw new Error('Invalid syntax for "e". Examples: ' +
  2171.             '"e": ".image" or ' +
  2172.             '"e": [".image1", ".image2"] or ' +
  2173.             '"e": {".parent": ".image"} or ' +
  2174.             '"e": {".parent1": ".image1", ".parent2": ".image2"}');
  2175.         }
  2176.         if (isBatchOp) rule.e = e || undefined;
  2177.       }
  2178.       let compileTo = isBatchOp ? rule : {};
  2179.       if (rule.r)
  2180.         compileTo.r = new RegExp(rule.r, 'i');
  2181.       if (App.NOP)
  2182.         compileTo = {};
  2183.       for (const key of Object.keys(FN_ARGS)) {
  2184.         if (RX_HAS_CODE.test(rule[key])) {
  2185.           const fn = Util.newFunction(...FN_ARGS[key], rule[key]);
  2186.           if (fn !== App.NOP || !isBatchOp) {
  2187.             compileTo[key] = fn;
  2188.           } else if (isBatchOp) {
  2189.             this.set(rule, 'unsafe-eval');
  2190.           }
  2191.         }
  2192.       }
  2193.       return rule;
  2194.     } catch (err) {
  2195.       if (isBatchOp) {
  2196.         this.set(rule, err);
  2197.         return rule;
  2198.       } else {
  2199.         return err;
  2200.       }
  2201.     }
  2202.   },
  2203.  
  2204.   runC(text, doc = document) {
  2205.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  2206.     ai.caption = fn(text, doc);
  2207.   },
  2208.  
  2209.   runCHandler: {
  2210.     function: (text, doc) =>
  2211.       ai.rule.c(text || doc.documentElement.outerHTML, doc, ai.node, ai.rule),
  2212.     string: (text, doc) => {
  2213.       const el = $many(ai.rule.c, doc);
  2214.       return !el ? '' :
  2215.         el.getAttribute('content') ||
  2216.         el.getAttribute('title') ||
  2217.         el.textContent;
  2218.     },
  2219.     default: () =>
  2220.       (ai.tooltip || 0).text ||
  2221.       ai.node.alt ||
  2222.       $propUp(ai.node, 'title') ||
  2223.       Req.getFileName(
  2224.         ai.node.tagName === (ai.popup || 0).tagName
  2225.           ? ai.url
  2226.           : ai.node.src || $propUp(ai.node, 'href')),
  2227.   },
  2228.  
  2229.   runQ(text, doc, docUrl) {
  2230.     let url;
  2231.     if (isFunction(ai.rule.q)) {
  2232.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  2233.       if (Array.isArray(url)) {
  2234.         ai.urls = url.slice(1);
  2235.         url = url[0];
  2236.       }
  2237.     } else {
  2238.       const el = $many(ai.rule.q, doc);
  2239.       url = Req.findImageUrl(el, docUrl);
  2240.     }
  2241.     return url;
  2242.   },
  2243.  
  2244.   /** @returns {?boolean|mpiv.RuleMatchInfo} */
  2245.   runE(rule, node) {
  2246.     const {e} = rule;
  2247.     if (typeof e === 'string')
  2248.       return node.matches(e);
  2249.     let p, img, res, info;
  2250.     for (const selParent in e) {
  2251.       if ((p = node.closest(selParent)) && (img = $(e[selParent], p))) {
  2252.         if (img === node)
  2253.           res = true;
  2254.         else if ((info = RuleMatcher.adaptiveFind(img, {rules: [rule]})))
  2255.           return info;
  2256.       }
  2257.     }
  2258.     return res;
  2259.   },
  2260.  
  2261.   /** @returns {?Array} if falsy then the rule should be skipped */
  2262.   runS(node, rule, m) {
  2263.     let urls = [], u;
  2264.     for (const s of ensureArray(rule.s))
  2265.       urls.push(
  2266.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  2267.           isFunction(s) ? s(m, node, rule) :
  2268.             s);
  2269.     if (rule.q && urls.length > 1) {
  2270.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  2271.       return;
  2272.     }
  2273.     if (Array.isArray(u = urls[0]))
  2274.       u = [urls = u][0];
  2275.     return u === '' /* "stop all rules" */ ? urls
  2276.       : u && Array.from(new Set(urls), Util.decodeUrl);
  2277.   },
  2278.  
  2279.   /** @returns {boolean} */
  2280.   runU(rule, url) {
  2281.     const u = rule[SYM_U] || (rule[SYM_U] = UrlMatcher(rule.u));
  2282.     return u.fn.call(u.data, url);
  2283.   },
  2284.  
  2285.   substituteSingle(s, m) {
  2286.     if (!m || m.input == null) return s;
  2287.     if (s.startsWith('/') && !s.startsWith('//')) {
  2288.       const mid = s.search(/[^\\]\//) + 1;
  2289.       const end = s.lastIndexOf('/');
  2290.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  2291.       return m.input.replace(re, s.slice(mid + 1, end));
  2292.     }
  2293.     if (m.length && s.includes('$')) {
  2294.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  2295.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  2296.         for (let i = maxLength; i >= 0; i--) {
  2297.           const part = num.slice(0, i) | 0;
  2298.           if (part < m.length)
  2299.             return (m[part] || '') + num.slice(i);
  2300.         }
  2301.         return text;
  2302.       });
  2303.     }
  2304.     return s;
  2305.   },
  2306.  
  2307.   toggle(rule, prop, condition) {
  2308.     rule[prop] = condition ? rule[`_${prop}`] : null;
  2309.     return condition;
  2310.   },
  2311. };
  2312.  
  2313. const RuleMatcher = {
  2314.  
  2315.   /** @returns {Object} */
  2316.   adaptiveFind(node, opts) {
  2317.     const tn = node.tagName;
  2318.     const src = node.currentSrc || node.src || '';
  2319.     const isPic = tn === 'IMG' || tn === 'VIDEO' && Util.isVideoUrlExt(src);
  2320.     let a, info, url;
  2321.     // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  2322.     if (tn !== 'A') {
  2323.       url = isPic && !src.startsWith('data:') && Util.rel2abs(src);
  2324.       info = RuleMatcher.find(url, node, opts);
  2325.     }
  2326.     if (!info && (a = node.closest('A'))) {
  2327.       const ds = a.dataset;
  2328.       url = ds.expandedUrl || ds.fullUrl || ds.url || a.href || '';
  2329.       url = url.includes('//t.co/') ? 'https://' + a.textContent : url;
  2330.       url = !url.startsWith('data:') && url;
  2331.       info = RuleMatcher.find(url, a, opts);
  2332.     }
  2333.     if (!info && isPic)
  2334.       info = {node, rule: {}, url: src};
  2335.     return info;
  2336.   },
  2337.  
  2338.   /** @returns ?mpiv.RuleMatchInfo */
  2339.   find(url, node, {noHtml, rules, skipRules} = {}) {
  2340.     const tn = node.tagName;
  2341.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  2342.     const isPicOrLink = isPic || tn === 'A';
  2343.     let m, html, info;
  2344.     for (const rule of rules || Ruler.rules) {
  2345.       if (skipRules && skipRules.includes(rule) ||
  2346.           rule.u && (!url || !Ruler.runU(rule, url)) ||
  2347.           rule.e && !rules && !(info = Ruler.runE(rule, node)))
  2348.         continue;
  2349.       if (info && info.url)
  2350.         return info;
  2351.       if (rule.r)
  2352.         m = !noHtml && rule.html && (isPicOrLink || rule.e)
  2353.           ? rule.r.exec(html || (html = node.outerHTML))
  2354.           : url && rule.r.exec(url);
  2355.       else if (url)
  2356.         m = Object.assign([url], {index: 0, input: url});
  2357.       else
  2358.         m = [];
  2359.       if (!m)
  2360.         continue;
  2361.       if (rule.s === '')
  2362.         return {};
  2363.       let hasS = rule.s != null;
  2364.       // a rule with follow:true for the currently hovered IMG produced a URL,
  2365.       // but we'll only allow it to match rules without 's' in the nested find call
  2366.       if (isPic && !hasS && !skipRules)
  2367.         continue;
  2368.       hasS &= rule.s !== 'gallery';
  2369.       const urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  2370.       if (urls)
  2371.         return RuleMatcher.makeInfo(hasS, rule, m, node, skipRules, urls);
  2372.     }
  2373.   },
  2374.  
  2375.   /** @returns ?mpiv.RuleMatchInfo */
  2376.   makeInfo(hasS, rule, match, node, skipRules, urls) {
  2377.     let info;
  2378.     let url = `${urls[0]}`;
  2379.     const follow = url && hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule);
  2380.     if (url)
  2381.       url = Util.rel2abs(url);
  2382.     else
  2383.       info = {};
  2384.     if (follow)
  2385.       info = RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]});
  2386.     if (!info && (!follow || RX_MEDIA_URL.test(url))) {
  2387.       const xhr = cfg.xhr && rule.xhr;
  2388.       info = {
  2389.         match,
  2390.         node,
  2391.         rule,
  2392.         url,
  2393.         urls: urls.length > 1 ? urls.slice(1) : null,
  2394.         gallery: rule.g && Gallery.makeParser(rule.g),
  2395.         post: isFunction(rule.post) ? rule.post(match) : rule.post,
  2396.         xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  2397.       };
  2398.     }
  2399.     return info;
  2400.   },
  2401.  
  2402.   isFollowableUrl(url, rule) {
  2403.     const f = rule.follow;
  2404.     return isFunction(f) ? f(url) : f;
  2405.   },
  2406. };
  2407.  
  2408. const Req = {
  2409.  
  2410.   gmXhr(url, opts = {}) {
  2411.     if (ai.req)
  2412.       tryCatch.call(ai.req, ai.req.abort);
  2413.     return new Promise((resolve, reject) => {
  2414.       const {anonymous} = ai.rule || {};
  2415.       ai.req = GM.xmlHttpRequest(Object.assign({
  2416.         url,
  2417.         anonymous,
  2418.         withCredentials: !anonymous,
  2419.         method: 'GET',
  2420.         timeout: 30e3,
  2421.       }, opts, {
  2422.         onload: done,
  2423.         onerror: done,
  2424.         ontimeout() {
  2425.           ai.req = null;
  2426.           reject(`Timeout fetching ${url}`);
  2427.         },
  2428.       }));
  2429.       function done(r) {
  2430.         ai.req = null;
  2431.         if (r.status < 400 && !r.error)
  2432.           resolve(r);
  2433.         else
  2434.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2435.       }
  2436.     });
  2437.   },
  2438.  
  2439.   async getDoc(url) {
  2440.     if (!url) {
  2441.       // current document
  2442.       return {
  2443.         doc,
  2444.         finalUrl: location.href,
  2445.         responseText: doc.documentElement.outerHTML,
  2446.       };
  2447.     }
  2448.     const r = await (!ai.post ?
  2449.       Req.gmXhr(url) :
  2450.       Req.gmXhr(url, {
  2451.         method: 'POST',
  2452.         data: ai.post,
  2453.         headers: {
  2454.           'Content-Type': 'application/x-www-form-urlencoded',
  2455.           'Referer': url,
  2456.         },
  2457.       }));
  2458.     r.doc = $parseHtml(r.responseText);
  2459.     return r;
  2460.   },
  2461.  
  2462.   async getImage(url, pageUrl, xhr = ai.xhr) {
  2463.     ai.bufBar = false;
  2464.     ai.bufStart = now();
  2465.     const response = await Req.gmXhr(url, {
  2466.       responseType: 'blob',
  2467.       headers: {
  2468.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2469.         Referer: pageUrl || (isFunction(xhr) ? xhr() : url),
  2470.       },
  2471.       onprogress: Req.getImageProgress,
  2472.     });
  2473.     Bar.set(false);
  2474.     const type = Req.guessMimeType(response);
  2475.     let b = response.response;
  2476.     if (!b) throw 'Empty response';
  2477.     if (b.type !== type)
  2478.       b = b.slice(0, b.size, type);
  2479.     const res = xhr === 'blob'
  2480.       ? (ai.blobUrl = URL.createObjectURL(b))
  2481.       : await Req.blobToDataUrl(b);
  2482.     return [res, type.startsWith('video')];
  2483.   },
  2484.  
  2485.   getImageProgress(e) {
  2486.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2487.       ai.bufBar = true;
  2488.     if (ai.bufBar) {
  2489.       const pct = e.loaded / e.total * 100 | 0;
  2490.       const size = e.total / 1024 | 0;
  2491.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2492.     }
  2493.   },
  2494.  
  2495.   async findRedirect() {
  2496.     try {
  2497.       const {finalUrl} = await Req.gmXhr(ai.url, {
  2498.         method: 'HEAD',
  2499.         headers: {
  2500.           'Referer': location.href.split('#', 1)[0],
  2501.         },
  2502.       });
  2503.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2504.       if (!info || !info.url)
  2505.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2506.       Object.assign(ai, info);
  2507.       App.startSingle();
  2508.     } catch (e) {
  2509.       App.handleError(e);
  2510.     }
  2511.   },
  2512.  
  2513.   async saveFile() {
  2514.     const url = ai.popup.src || ai.popup.currentSrc;
  2515.     let name = Req.getFileName(ai.imageUrl || url);
  2516.     if (!name.includes('.'))
  2517.       name += '.jpg';
  2518.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2519.       $new('a', {href: url, download: name})
  2520.         .dispatchEvent(new MouseEvent('click'));
  2521.     } else {
  2522.       Status.set('+loading');
  2523.       const onload = () => Status.set('-loading');
  2524.       const gmDL = typeof GM_download === 'function';
  2525.       (gmDL ? GM_download : GM.xmlHttpRequest)({
  2526.         url,
  2527.         name,
  2528.         headers: {Referer: url},
  2529.         method: 'get', // polyfilling GM_download
  2530.         responseType: 'blob', // polyfilling GM_download
  2531.         overrideMimeType: 'application/octet-stream', // polyfilling GM_download
  2532.         onerror: e => {
  2533.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2534.           onload();
  2535.         },
  2536.         onprogress: Req.getImageProgress,
  2537.         onload({response}) {
  2538.           onload();
  2539.           if (!gmDL) { // polyfilling GM_download
  2540.             const a = Object.assign(document.createElement('a'), {
  2541.               href: URL.createObjectURL(response),
  2542.               download: name,
  2543.             });
  2544.             a.dispatchEvent(new MouseEvent('click'));
  2545.             setTimeout(URL.revokeObjectURL, 10e3, a.href);
  2546.           }
  2547.         },
  2548.       });
  2549.     }
  2550.   },
  2551.  
  2552.   getFileName(url) {
  2553.     return decodeURIComponent(url).split(/[#?&]/, 1)[0].split('/').pop();
  2554.   },
  2555.  
  2556.   blobToDataUrl(blob) {
  2557.     return new Promise((resolve, reject) => {
  2558.       const fr = new FileReader();
  2559.       fr.onload = () => resolve(fr.result);
  2560.       fr.onerror = reject;
  2561.       fr.readAsDataURL(blob);
  2562.     });
  2563.   },
  2564.  
  2565.   guessMimeType({responseHeaders, finalUrl}) {
  2566.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2567.         !RegExp.$1.includes('text/plain'))
  2568.       return RegExp.$1;
  2569.     const ext = Util.extractFileExt(finalUrl) || 'jpg';
  2570.     switch (ext.toLowerCase()) {
  2571.       case 'bmp': return 'image/bmp';
  2572.       case 'gif': return 'image/gif';
  2573.       case 'jpe': return 'image/jpeg';
  2574.       case 'jpeg': return 'image/jpeg';
  2575.       case 'jpg': return 'image/jpeg';
  2576.       case 'mp4': return 'video/mp4';
  2577.       case 'png': return 'image/png';
  2578.       case 'svg': return 'image/svg+xml';
  2579.       case 'tif': return 'image/tiff';
  2580.       case 'tiff': return 'image/tiff';
  2581.       case 'webm': return 'video/webm';
  2582.       default: return 'application/octet-stream';
  2583.     }
  2584.   },
  2585.  
  2586.   findImageUrl(n, url) {
  2587.     if (!n) return;
  2588.     let html;
  2589.     const path =
  2590.       n.getAttribute('data-src') || // lazy loaded src, whereas current `src` is an empty 1x1 pixel
  2591.       n.getAttribute('src') ||
  2592.       n.getAttribute('data-m4v') ||
  2593.       n.getAttribute('href') ||
  2594.       n.getAttribute('content') ||
  2595.       (html = n.outerHTML).includes('http') &&
  2596.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2597.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2598.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2599.   },
  2600. };
  2601.  
  2602. const Status = {
  2603.  
  2604.   set(status) {
  2605.     if (!status && !cfg.globalStatus) {
  2606.       if (ai.node) ai.node.removeAttribute(STATUS_ATTR);
  2607.       return;
  2608.     }
  2609.     const prefix = cfg.globalStatus ? PREFIX : '';
  2610.     const action = status && /^[+-]/.test(status) && status[0];
  2611.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2612.     const el = cfg.globalStatus ? doc.documentElement :
  2613.       name === 'edge' ? ai.popup :
  2614.         ai.node;
  2615.     if (!el) return;
  2616.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2617.     const oldValue = (el.getAttribute(attr) || '').trim();
  2618.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2619.     switch (action) {
  2620.       case '-':
  2621.         cls.delete(name);
  2622.         break;
  2623.       case false:
  2624.         for (const c of cls)
  2625.           if (c.startsWith(prefix) && c !== name)
  2626.             cls.delete(c);
  2627.       // fallthrough to +
  2628.       case '+':
  2629.         if (name)
  2630.           cls.add(name);
  2631.         break;
  2632.     }
  2633.     const newValue = [...cls].join(' ');
  2634.     if (newValue !== oldValue)
  2635.       el.setAttribute(attr, newValue);
  2636.   },
  2637.  
  2638.   loading(force) {
  2639.     if (!force) {
  2640.       clearTimeout(ai.timerStatus);
  2641.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2642.     } else if (!ai.popupLoaded) {
  2643.       Status.set('+loading');
  2644.     }
  2645.   },
  2646. };
  2647.  
  2648. const UrlMatcher = (() => {
  2649.   // string-to-regexp escaped chars
  2650.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2651.   // rx for '^' symbol in simple url match
  2652.   const RX_SEP = /[^\w%._-]/y;
  2653.   const RXS_SEP = RX_SEP.source;
  2654.   return match => {
  2655.     const results = [];
  2656.     for (const s of ensureArray(match)) {
  2657.       const pinDomain = s.startsWith('||');
  2658.       const pinStart = !pinDomain && s.startsWith('|');
  2659.       const endSep = s.endsWith('^');
  2660.       let fn;
  2661.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2662.       if (needle.includes('^')) {
  2663.         let plain = '';
  2664.         for (const part of needle.split('^'))
  2665.           if (part.length > plain.length)
  2666.             plain = part;
  2667.         const rx = new RegExp(
  2668.           (pinStart ? '^' : '') +
  2669.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2670.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2671.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2672.         needle = [plain, rx];
  2673.         fn = regexp;
  2674.       } else if (pinStart) {
  2675.         fn = endSep ? equals : starts;
  2676.       } else if (pinDomain) {
  2677.         const slashPos = needle.indexOf('/');
  2678.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2679.         needle = [needle, domain, slashPos > 0, endSep];
  2680.         fn = startsDomainPrescreen;
  2681.       } else if (endSep) {
  2682.         fn = ends;
  2683.       } else {
  2684.         fn = has;
  2685.       }
  2686.       results.push({fn, data: needle});
  2687.     }
  2688.     return results.length > 1 ?
  2689.       {fn: checkArray, data: results} :
  2690.       results[0];
  2691.   };
  2692.   function checkArray(s) {
  2693.     return this.some(checkArrayItem, s);
  2694.   }
  2695.   function checkArrayItem(item) {
  2696.     return item.fn.call(item.data, this);
  2697.   }
  2698.   function ends(s) {
  2699.     return s.endsWith(this) || (
  2700.       s.length > this.length &&
  2701.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2702.       endsWithSep(s));
  2703.   }
  2704.   function endsWithSep(s, pos = s.length - 1) {
  2705.     RX_SEP.lastIndex = pos;
  2706.     return RX_SEP.test(s);
  2707.   }
  2708.   function equals(s) {
  2709.     return s.startsWith(this) && (
  2710.       s.length === this.length ||
  2711.       s.length === this.length + 1 && endsWithSep(s));
  2712.   }
  2713.   function has(s) {
  2714.     return s.includes(this);
  2715.   }
  2716.   function regexp(s) {
  2717.     return s.includes(this[0]) && this[1].test(s);
  2718.   }
  2719.   function starts(s) {
  2720.     return s.startsWith(this);
  2721.   }
  2722.   function startsDomainPrescreen(url) {
  2723.     return url.includes(this[0]) && startsDomain.call(this, url);
  2724.   }
  2725.   function startsDomain(url) {
  2726.     let hostStart = url.indexOf('//');
  2727.     if (hostStart && url[hostStart - 1] !== ':')
  2728.       return;
  2729.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2730.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2731.     const [needle, domain, pinDomainEnd, endSep] = this;
  2732.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2733.     for (; ; start++) {
  2734.       start = host.indexOf(domain, start);
  2735.       if (start < 0)
  2736.         return;
  2737.       if (!start || host[start - 1] === '.')
  2738.         break;
  2739.     }
  2740.     start += hostStart;
  2741.     if (url.lastIndexOf(needle, start) !== start)
  2742.       return;
  2743.     const end = start + needle.length;
  2744.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2745.   }
  2746. })();
  2747.  
  2748. const Util = {
  2749.  
  2750.   addStyle(name, css) {
  2751.     const id = `${PREFIX}style:${name}`;
  2752.     const el = doc.getElementById(id) ||
  2753.                css && $new('style', {id});
  2754.     if (!el) return;
  2755.     if (el.textContent !== css)
  2756.       el.textContent = css;
  2757.     if (el.parentElement !== doc.head)
  2758.       doc.head.appendChild(el);
  2759.     return el;
  2760.   },
  2761.  
  2762.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2763.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2764.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2765.   },
  2766.  
  2767.   decodeHtmlEntities(s) {
  2768.     return s
  2769.       .replace(/&quot;/g, '"')
  2770.       .replace(/&apos;/g, '\'')
  2771.       .replace(/&lt;/g, '<')
  2772.       .replace(/&gt;/g, '>')
  2773.       .replace(/&amp;/g, '&');
  2774.   },
  2775.  
  2776.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2777.   decodeUrl(url) {
  2778.     if (!url || typeof url !== 'string') return url;
  2779.     const iPct = url.indexOf('%');
  2780.     const iColon = url.indexOf(':');
  2781.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2782.       decodeURIComponent(url) :
  2783.       url;
  2784.   },
  2785.  
  2786.   deepEqual(a, b) {
  2787.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2788.       return a === b;
  2789.     if (Array.isArray(a)) {
  2790.       return Array.isArray(b) &&
  2791.         a.length === b.length &&
  2792.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2793.     }
  2794.     const keys = Object.keys(a);
  2795.     return keys.length === Object.keys(b).length &&
  2796.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2797.   },
  2798.  
  2799.   extractFileExt: url => (url = RX_MEDIA_URL.exec(url)) && url[1],
  2800.  
  2801.   forceLayout(node) {
  2802.     // eslint-disable-next-line no-unused-expressions
  2803.     node.clientHeight;
  2804.   },
  2805.  
  2806.   formatError(e, rule) {
  2807.     const message =
  2808.       e.message ||
  2809.       e.readyState && 'Request failed.' ||
  2810.       e.type === 'error' && `File can't be displayed.${
  2811.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2812.       }` ||
  2813.       e;
  2814.     const m = [
  2815.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold'],
  2816.       ['', 'font-weight:normal'],
  2817.     ];
  2818.     m.push(...[
  2819.       ['Node: %o', ai.node],
  2820.       ['Rule: %o', rule],
  2821.       ai.url && ['URL: %s', ai.url],
  2822.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2823.     ].filter(Boolean));
  2824.     return {
  2825.       message,
  2826.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2827.       consoleArgs: m.map(([, v]) => v),
  2828.     };
  2829.   },
  2830.  
  2831.   getReactChildren(el, path) {
  2832.     if (isFF) el = el.wrappedJSObject || el;
  2833.     for (const k in el)
  2834.       if (typeof k === 'string' && k.startsWith('__reactProps'))
  2835.         return (el = el[k].children) && (path ? getObjProp(el, path) : el);
  2836.   },
  2837.  
  2838.   isVideoUrl: url => url.startsWith('data:video') || Util.isVideoUrlExt(url),
  2839.  
  2840.   isVideoUrlExt: url => (url = Util.extractFileExt(url)) && /^(webm|mp4)$/i.test(url),
  2841.  
  2842.   newFunction(...args) {
  2843.     try {
  2844.       return App.NOP || (trustedScript
  2845.         // eslint-disable-next-line no-eval
  2846.         ? window.eval(trustedScript(`(function anonymous(${args.slice(0, -1).join(',')}){${args.slice(-1)[0]}})`))
  2847.         : new Function(...args)
  2848.       );
  2849.     } catch (e) {
  2850.       if (!RX_EVAL_BLOCKED.test(e.message))
  2851.         throw e;
  2852.       App.NOP = () => {};
  2853.       return App.NOP;
  2854.     }
  2855.   },
  2856.  
  2857.   rel2abs(rel, abs = location.href) {
  2858.     try {
  2859.       return /^(data:|blob:|[-\w]+:\/\/)/.test(rel) ? rel :
  2860.         new URL(rel, abs).href;
  2861.     } catch (e) {
  2862.       return rel;
  2863.     }
  2864.   },
  2865.  
  2866.   stringify(...args) {
  2867.     const p = Array.prototype;
  2868.     const {toJSON} = p;
  2869.     if (toJSON) p.toJSON = null;
  2870.     const res = JSON.stringify(...args);
  2871.     if (toJSON) p.toJSON = toJSON;
  2872.     return res;
  2873.   },
  2874.  
  2875.   suppressTooltip() {
  2876.     for (const node of [
  2877.       ai.node.parentNode,
  2878.       ai.node,
  2879.       ai.node.firstElementChild,
  2880.     ]) {
  2881.       const t = (node || 0).title;
  2882.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2883.         ai.tooltip = {node, text: t};
  2884.         node.title = '';
  2885.         break;
  2886.       }
  2887.     }
  2888.   },
  2889.  
  2890.   tabFixUrl() {
  2891.     const {tabfix = App.tabfix} = ai.rule;
  2892.     return tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2893.            flattenHtml(`data:text/html;charset=utf8,
  2894.       <style>
  2895.         body {
  2896.           margin: 0;
  2897.           padding: 0;
  2898.           background: #222;
  2899.         }
  2900.         .fit {
  2901.           overflow: hidden
  2902.         }
  2903.         .fit > img {
  2904.           max-width: 100vw;
  2905.           max-height: 100vh;
  2906.         }
  2907.         body > img {
  2908.           margin: auto;
  2909.           position: absolute;
  2910.           left: 0;
  2911.           right: 0;
  2912.           top: 0;
  2913.           bottom: 0;
  2914.         }
  2915.       </style>
  2916.       <body class=fit>
  2917.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2918.       </body>
  2919.     `).replace(/\x20?([:>])\x20/g, '$1').replace(/#/g, '%23');
  2920.   },
  2921. };
  2922.  
  2923. async function setup({rule} = {}) {
  2924.   if (!isFunction(doc.body.attachShadow)) {
  2925.     alert('Cannot show MPIV config dialog: the browser is probably too old.\n' +
  2926.           'You can edit the script\'s storage directly in your userscript manager.');
  2927.     return;
  2928.   }
  2929.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2930.   let uiCfg;
  2931.   let root = (elSetup || 0).shadowRoot;
  2932.   let {blankRuleElement} = setup;
  2933.   /** @type NodeList */
  2934.   const UI = new Proxy({}, {
  2935.     get(_, id) {
  2936.       return root.getElementById(id);
  2937.     },
  2938.   });
  2939.   if (!rule || !elSetup)
  2940.     init(await Config.load({save: true}));
  2941.   if (rule)
  2942.     installRule(rule);
  2943.  
  2944.   function init(data) {
  2945.     uiCfg = data;
  2946.     $remove(elSetup);
  2947.     elSetup = $new('div', {contentEditable: true});
  2948.     root = elSetup.attachShadow({mode: 'open'});
  2949.     root.append(...createSetupElement());
  2950.     initEvents();
  2951.     renderAll();
  2952.     renderCustomScales();
  2953.     renderRules();
  2954.     doc.body.appendChild(elSetup);
  2955.     requestAnimationFrame(() => {
  2956.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elSetup.clientHeight / 4) + 'px';
  2957.     });
  2958.   }
  2959.  
  2960.   function initEvents() {
  2961.     UI._apply.onclick = UI._cancel.onclick = UI._ok.onclick = UI._x.onclick = closeSetup;
  2962.     UI._export.onclick = e => {
  2963.       dropEvent(e);
  2964.       GM.setClipboard(Util.stringify(collectConfig(), null, '  '));
  2965.       UI._exportNotification.hidden = false;
  2966.       setTimeout(() => (UI._exportNotification.hidden = true), 1000);
  2967.     };
  2968.     UI._import.onclick = e => {
  2969.       dropEvent(e);
  2970.       const s = prompt('Paste settings:');
  2971.       if (s)
  2972.         init(new Config({data: s}));
  2973.     };
  2974.     UI._install.onclick = setupRuleInstaller;
  2975.     const /** @type {HTMLTextAreaElement} */ cssApp = UI._cssApp;
  2976.     UI._reveal.onclick = e => {
  2977.       e.preventDefault();
  2978.       cssApp.hidden = !cssApp.hidden;
  2979.       if (!cssApp.hidden) {
  2980.         if (!cssApp.value) {
  2981.           App.updateStyles();
  2982.           cssApp.value = App.globalStyle.trim();
  2983.           cssApp.setSelectionRange(0, 0);
  2984.         }
  2985.         cssApp.focus();
  2986.       }
  2987.     };
  2988.     UI.start.onchange = function () {
  2989.       UI.delay.closest('label').hidden =
  2990.         UI.preload.closest('label').hidden =
  2991.           this.value !== 'auto';
  2992.     };
  2993.     UI.start.onchange();
  2994.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  2995.     // color
  2996.     for (const el of $$('[type="color"]', root)) {
  2997.       el.oninput = colorOnInput;
  2998.       el.elSwatch = el.nextElementSibling;
  2999.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  3000.       el.elOpacity.elColor = el;
  3001.     }
  3002.     function colorOnInput() {
  3003.       this.elSwatch.style.setProperty('--color',
  3004.         Util.color(this.value, this.elOpacity.valueAsNumber));
  3005.     }
  3006.     // range
  3007.     for (const el of $$('[type="range"]', root)) {
  3008.       el.oninput = rangeOnInput;
  3009.       el.onblur = rangeOnBlur;
  3010.       el.addEventListener('focusin', rangeOnFocus);
  3011.     }
  3012.     function rangeOnBlur(e) {
  3013.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  3014.         this.elEdit.onblur(e);
  3015.     }
  3016.     function rangeOnFocus() {
  3017.       if (this.elEdit) return;
  3018.       const {min, max, step, value} = this;
  3019.       this.elEdit = $new('input', {
  3020.         value, min, max, step,
  3021.         className: 'range-edit',
  3022.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  3023.         type: 'number',
  3024.         elRange: this,
  3025.         onblur: rangeEditOnBlur,
  3026.         oninput: rangeEditOnInput,
  3027.       });
  3028.       this.insertAdjacentElement('afterend', this.elEdit);
  3029.     }
  3030.     function rangeOnInput() {
  3031.       this.title = (this.dataset.title || '').replace('$', this.value);
  3032.       if (this.elColor) this.elColor.oninput();
  3033.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  3034.     }
  3035.     // range-edit
  3036.     function rangeEditOnBlur(e) {
  3037.       if (e.relatedTarget !== this.elRange) {
  3038.         this.remove();
  3039.         this.elRange.elEdit = null;
  3040.       }
  3041.     }
  3042.     function rangeEditOnInput() {
  3043.       this.elRange.valueAsNumber = this.valueAsNumber;
  3044.       this.elRange.oninput();
  3045.     }
  3046.     // prevent the main page from interpreting key presses in inputs as hotkeys
  3047.     // which may happen since it sees only the outer <div> in the event |target|
  3048.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  3049.   }
  3050.  
  3051.   function closeSetup(event) {
  3052.     const isApply = this.id === '_apply';
  3053.     if (event && (this.id === '_ok' || isApply)) {
  3054.       cfg = uiCfg = collectConfig({save: true, clone: isApply});
  3055.       Ruler.init();
  3056.       Menu.reRegisterAlt();
  3057.       if (isApply) {
  3058.         renderCustomScales();
  3059.         UI._css.textContent = cfg._getCss();
  3060.         return;
  3061.       }
  3062.     }
  3063.     $remove(elSetup);
  3064.     elSetup = null;
  3065.   }
  3066.  
  3067.   function collectConfig({save, clone} = {}) {
  3068.     let data = {};
  3069.     for (const el of $$('input[id], select[id]', root))
  3070.       data[el.id] = el.type === 'checkbox' ? el.checked :
  3071.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  3072.           el.value || '';
  3073.     Object.assign(data, {
  3074.       css: UI.css.value.trim(),
  3075.       delay: UI.delay.valueAsNumber * 1000,
  3076.       hosts: collectRules(),
  3077.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  3078.       scales: UI.scales.value
  3079.         .trim()
  3080.         .split(/[,;]*\s+/)
  3081.         .map(x => x.replace(',', '.'))
  3082.         .filter(x => !isNaN(parseFloat(x))),
  3083.     });
  3084.     if (clone)
  3085.       data = JSON.parse(Util.stringify(data));
  3086.     return new Config({data, save});
  3087.   }
  3088.  
  3089.   function collectRules() {
  3090.     return [...UI._rules.children]
  3091.       .map(el => [el.value.trim(), el[RULE]])
  3092.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  3093.       .map(([s, json]) => json || s)
  3094.       .filter(Boolean);
  3095.   }
  3096.  
  3097.   function checkRule({target: el}) {
  3098.     let json, error, title;
  3099.     const prev = el.previousElementSibling;
  3100.     if (el.value) {
  3101.       json = Ruler.parse(el.value);
  3102.       error = json instanceof Error && (json.message || String(json));
  3103.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  3104.         !/^[-.a-z0-9]*$/i.test(json.d);
  3105.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  3106.         .filter(Boolean).join('\n');
  3107.       el.classList.toggle('invalid-domain', invalidDomain);
  3108.       el.classList.toggle('matching-domain', !!json.d && hostname.includes(json.d));
  3109.       if (!prev)
  3110.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3111.     } else if (prev) {
  3112.       prev.focus();
  3113.       el.remove();
  3114.     }
  3115.     el[RULE] = !error && json;
  3116.     el.title = title;
  3117.     el.setCustomValidity(error || '');
  3118.   }
  3119.  
  3120.   async function focusRule({target: el, relatedTarget: from}) {
  3121.     if (el === this)
  3122.       return;
  3123.     await new Promise(setTimeout);
  3124.     if (el[RULE] && el.rows < 2) {
  3125.       let i = el.selectionStart;
  3126.       const txt = el.value = Ruler.format(el[RULE], {expand: true});
  3127.       i += txt.slice(0, i).match(/^\s*/gm).reduce((len, s) => len + s.length, 0);
  3128.       el.setSelectionRange(i, i);
  3129.       el.rows = txt.match(/^/gm).length;
  3130.     }
  3131.     if (!this.contains(from))
  3132.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  3133.   }
  3134.  
  3135.   function installRule(rule) {
  3136.     const inputs = UI._rules.children;
  3137.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  3138.     if (!el) {
  3139.       el = inputs[0];
  3140.       el[RULE] = rule;
  3141.       el.value = Ruler.format(rule);
  3142.       el.hidden = false;
  3143.       const i = Math.max(0, collectRules().indexOf(rule));
  3144.       inputs[i].insertAdjacentElement('afterend', el);
  3145.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3146.     }
  3147.     const rect = el.getBoundingClientRect();
  3148.     if (rect.bottom < 0 ||
  3149.         rect.bottom > el.parentNode.offsetHeight)
  3150.       el.scrollIntoView();
  3151.     el.classList.add('highlight');
  3152.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  3153.     el.focus();
  3154.   }
  3155.  
  3156.   function renderRules() {
  3157.     const rules = UI._rules;
  3158.     rules.addEventListener('input', checkRule);
  3159.     rules.addEventListener('focusin', focusRule);
  3160.     rules.addEventListener('paste', focusRule);
  3161.     blankRuleElement =
  3162.       setup.blankRuleElement =
  3163.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  3164.     for (const rule of uiCfg.hosts || []) {
  3165.       const el = blankRuleElement.cloneNode();
  3166.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  3167.       rules.appendChild(el);
  3168.       checkRule({target: el});
  3169.     }
  3170.     const search = UI._search;
  3171.     search.oninput = () => {
  3172.       setup.search = search.value;
  3173.       const s = search.value.toLowerCase();
  3174.       for (const el of rules.children)
  3175.         el.hidden = s && !el.value.toLowerCase().includes(s);
  3176.     };
  3177.     search.value = setup.search || '';
  3178.     if (search.value)
  3179.       search.oninput();
  3180.   }
  3181.  
  3182.   function renderCustomScales() {
  3183.     UI.scales.value = uiCfg.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  3184.   }
  3185.  
  3186.   function renderAll() {
  3187.     for (const el of $$('input[id], select[id], textarea[id]', root))
  3188.       if (el.id in uiCfg)
  3189.         el[el.type === 'checkbox' ? 'checked' : 'value'] = uiCfg[el.id];
  3190.     for (const el of $$('input[type="range"]', root))
  3191.       el.oninput();
  3192.     for (const el of $$('a[href^="http"]', root))
  3193.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  3194.     UI.delay.valueAsNumber = uiCfg.delay / 1000;
  3195.     UI.scale.valueAsNumber = Math.round(clamp(uiCfg.scale - 1, 0, 1) * 100);
  3196.   }
  3197. }
  3198.  
  3199. function setupClickedRule(event) {
  3200.   let rule;
  3201.   const el = event.target.closest('blockquote, code, pre');
  3202.   if (el && !event.button && !eventModifiers(event) && (rule = Ruler.fromElement(el))) {
  3203.     dropEvent(event);
  3204.     setup({rule});
  3205.   }
  3206. }
  3207.  
  3208. async function setupRuleInstaller(e) {
  3209.   dropEvent(e);
  3210.   const parent = this.parentElement;
  3211.   parent.children._installLoading.hidden = false;
  3212.   this.remove();
  3213.   let rules;
  3214.  
  3215.   try {
  3216.     rules = extractRules(await Req.getDoc(this.href));
  3217.     const selector = $new('select', {
  3218.       size: 8,
  3219.       style: 'width: 100%',
  3220.       selectedIndex: findMatchingRuleIndex(),
  3221.       ondblclick: e => e.target !== selector && maybeSetup(e),
  3222.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  3223.     }, rules.map(renderRule));
  3224.     parent.children._installLoading.remove();
  3225.     parent.children._installHint.hidden = false;
  3226.     parent.appendChild(selector);
  3227.     requestAnimationFrame(() => {
  3228.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  3229.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  3230.       selector.focus();
  3231.     });
  3232.   } catch (e) {
  3233.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  3234.   }
  3235.  
  3236.   function extractRules({doc}) {
  3237.     // sort by name
  3238.     return [...$$('#wiki-body tr', doc)]
  3239.       .map(tr => [
  3240.         tr.cells[0].textContent.trim(),
  3241.         Ruler.fromElement(tr.cells[1]),
  3242.       ])
  3243.       .filter(([name, r]) =>
  3244.         name && r && (!r.d || hostname.includes(r.d)))
  3245.       .sort(([a], [b]) =>
  3246.         (a = a.toLowerCase()) < (b = b.toLowerCase()) ? -1 :
  3247.           a > b ? 1 :
  3248.             0);
  3249.   }
  3250.  
  3251.   function findMatchingRuleIndex() {
  3252.     const dottedHost = `.${hostname}.`;
  3253.     let maxCount = 0, maxIndex = 0, index = 0;
  3254.     for (const [name, {d}] of rules) {
  3255.       let count = !!(d && hostname.includes(d)) * 10;
  3256.       for (const part of name.toLowerCase().split(/[^a-z\d.-]+/i))
  3257.         count += dottedHost.includes(`.${part}.`) && part.length;
  3258.       if (count > maxCount) {
  3259.         maxCount = count;
  3260.         maxIndex = index;
  3261.       }
  3262.       index++;
  3263.     }
  3264.     return maxIndex;
  3265.   }
  3266.  
  3267.   function renderRule([name, rule]) {
  3268.     return $new('option', {
  3269.       textContent: name,
  3270.       title: Ruler.format(rule, {expand: true})
  3271.         .replace(/^{|\s*}$/g, '')
  3272.         .split('\n')
  3273.         .slice(0, 12)
  3274.         .map(renderTitleLine)
  3275.         .filter(Boolean)
  3276.         .join('\n'),
  3277.     });
  3278.   }
  3279.  
  3280.   function renderTitleLine(line, i, arr) {
  3281.     return (
  3282.       // show ... on 10th line if there are more lines
  3283.       i === 9 && arr.length > 10 ? '...' :
  3284.         i > 10 ? '' :
  3285.           // truncate to 100 chars
  3286.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  3287.             // strip the leading space
  3288.             .replace(/^\s/, ''));
  3289.   }
  3290.  
  3291.   function maybeSetup(e) {
  3292.     if (!eventModifiers(e))
  3293.       setup({rule: rules[e.currentTarget.selectedIndex][1]});
  3294.   }
  3295. }
  3296.  
  3297. const CSS_SETUP = /*language=css*/ `
  3298.   :host {
  3299.     all: initial !important;
  3300.     position: fixed !important;
  3301.     z-index: 2147483647 !important;
  3302.     top: 20px !important;
  3303.     right: 20px !important;
  3304.     padding: 1.5em !important;
  3305.     color: #000 !important;
  3306.     background: #eee !important;
  3307.     box-shadow: 5px 5px 25px 2px #000 !important;
  3308.     width: 33em !important;
  3309.     border: 1px solid black !important;
  3310.     display: flex !important;
  3311.     flex-direction: column !important;
  3312.   }
  3313.   main {
  3314.     font: 12px/15px sans-serif;
  3315.   }
  3316.   table {
  3317.     text-align:left;
  3318.   }
  3319.   ul {
  3320.     max-height: calc(100vh - 200px);
  3321.     margin: 0 0 15px 0;
  3322.     padding: 0;
  3323.     list-style: none;
  3324.   }
  3325.   li {
  3326.     margin: 0;
  3327.     padding: .25em 0;
  3328.   }
  3329.   li.options {
  3330.     display: flex;
  3331.     align-items: center;
  3332.     justify-content: space-between;
  3333.   }
  3334.   li.row {
  3335.     align-items: start;
  3336.     flex-wrap: wrap;
  3337.   }
  3338.   li.row label {
  3339.     display: flex;
  3340.     flex-direction: row;
  3341.     align-items: center;
  3342.   }
  3343.   li.row input {
  3344.     margin-right: .25em;
  3345.   }
  3346.   li.stretch label {
  3347.     flex: 1;
  3348.     white-space: nowrap;
  3349.   }
  3350.   li.stretch label > span {
  3351.     display: flex;
  3352.     flex-direction: row;
  3353.     flex: 1;
  3354.   }
  3355.   label {
  3356.     display: inline-flex;
  3357.     flex-direction: column;
  3358.   }
  3359.   label:not(:last-child) {
  3360.     margin-right: 1em;
  3361.   }
  3362.   input, select {
  3363.     min-height: 1.3em;
  3364.     box-sizing: border-box;
  3365.   }
  3366.   input[type=checkbox] {
  3367.     margin-left: 0;
  3368.   }
  3369.   input[type=number] {
  3370.     width: 4em;
  3371.   }
  3372.   input:not([type=checkbox])  {
  3373.     padding: 0 .25em;
  3374.   }
  3375.   input[type=range] {
  3376.     flex: 1;
  3377.     width: 100%;
  3378.     margin: 0 .25em;
  3379.     padding: 0;
  3380.     filter: saturate(0);
  3381.     opacity: .5;
  3382.   }
  3383.   u + input[type=range] {
  3384.     max-width: 3em;
  3385.   }
  3386.   input[type=range]:hover {
  3387.     filter: none;
  3388.     opacity: 1;
  3389.   }
  3390.   input[type=color] {
  3391.     position: absolute;
  3392.     width: calc(1.5em + 2px);
  3393.     opacity: 0;
  3394.     cursor: pointer;
  3395.   }
  3396.   u {
  3397.     position: relative;
  3398.     flex: 0 0 1.5em;
  3399.     height: 1.5em;
  3400.     border: 1px solid #888;
  3401.     pointer-events: none;
  3402.     color: #888;
  3403.     background-image:
  3404.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  3405.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  3406.     background-size: .5em .5em;
  3407.     background-position: 0 0, .25em .25em;
  3408.   }
  3409.   u::after {
  3410.     position: absolute;
  3411.     top: 0;
  3412.     left: 0;
  3413.     right: 0;
  3414.     bottom: 0;
  3415.     content: "";
  3416.     background-color: var(--color);
  3417.   }
  3418.   .range-edit {
  3419.     position: absolute;
  3420.     box-shadow: 0 0.25em 1em #000;
  3421.     z-index: 99;
  3422.   }
  3423.   textarea {
  3424.     resize: vertical;
  3425.     margin: 1px 0;
  3426.     font: 11px/1.25 Consolas, monospace;
  3427.   }
  3428.   :invalid {
  3429.     background-color: #f002;
  3430.     border-color: #800;
  3431.   }
  3432.   code {
  3433.     font-weight: bold;
  3434.   }
  3435.   a {
  3436.     text-decoration: none;
  3437.     color: LinkText;
  3438.     cursor: pointer;
  3439.   }
  3440.   a:hover {
  3441.     text-decoration: underline;
  3442.   }
  3443.   button {
  3444.     padding: .2em 1em;
  3445.     margin: 0 1em;
  3446.   }
  3447.   kbd {
  3448.     padding: 1px 6px;
  3449.     font-weight: bold;
  3450.     font-family: Consolas, monospace;
  3451.     border: 1px solid #888;
  3452.     border-radius: 3px;
  3453.     box-shadow: inset 1px 1px 5px #8888, .25px .5px 2px #0008;
  3454.   }
  3455.   .column {
  3456.     display: flex;
  3457.     flex-direction: column;
  3458.   }
  3459.   .highlight {
  3460.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  3461.     animation-fill-mode: both;
  3462.   }
  3463.   #_rules > * {
  3464.     word-break: break-all;
  3465.   }
  3466.   #_rules > :not(:focus) {
  3467.     overflow: hidden; /* prevents wrapping in FF */
  3468.   }
  3469.   .invalid-domain {
  3470.     opacity: .5;
  3471.   }
  3472.   .matching-domain {
  3473.     border-color: #56b8ff;
  3474.     background: #d7eaff;
  3475.   }
  3476.   #_x {
  3477.     position: absolute;
  3478.     top: 0;
  3479.     right: 0;
  3480.     padding: 4px 8px;
  3481.     cursor: pointer;
  3482.     user-select: none;
  3483.   }
  3484.   #_x:hover {
  3485.     background-color: #8884;
  3486.   }
  3487.   #_cssApp {
  3488.     color: seagreen;
  3489.   }
  3490.   #_exportNotification {
  3491.     color: green;
  3492.     font-weight: bold;
  3493.     position: absolute;
  3494.     left: 0;
  3495.     right: 0;
  3496.     bottom: 2px;
  3497.   }
  3498.   #_installHint {
  3499.     color: green;
  3500.   }
  3501.   #_usage, #_usage * {
  3502.     font: inherit;
  3503.     color: inherit;
  3504.   }
  3505.   #_usage th, #_usage kbd {
  3506.     font-weight: bold;
  3507.     white-space: pre-line;
  3508.   }
  3509.   @keyframes fade-in {
  3510.     from { background-color: deepskyblue }
  3511.     to {}
  3512.   }
  3513.   @media (prefers-color-scheme: dark) {
  3514.     :host {
  3515.       color: #aaa !important;
  3516.       background: #333 !important;
  3517.     }
  3518.     a {
  3519.       color: deepskyblue;
  3520.     }
  3521.     button {
  3522.       background: linear-gradient(-5deg, #333, #555);
  3523.       border: 1px solid #000;
  3524.       box-shadow: 0 2px 6px #181818;
  3525.       border-radius: 3px;
  3526.       cursor: pointer;
  3527.     }
  3528.     button:hover {
  3529.       background: linear-gradient(-5deg, #333, #666);
  3530.     }
  3531.     textarea, input, select {
  3532.       background: #111;
  3533.       color: #BBB;
  3534.       border: 1px solid #555;
  3535.     }
  3536.     input[type=checkbox] {
  3537.       filter: invert(1);
  3538.     }
  3539.     input[type=range] {
  3540.       filter: invert(1) saturate(0);
  3541.     }
  3542.     input[type=range]:hover {
  3543.       filter: invert(1);
  3544.     }
  3545.     kbd {
  3546.       border-color: #666;
  3547.     }
  3548.     @supports (-moz-appearance: none) {
  3549.       input[type=checkbox],
  3550.       input[type=range],
  3551.       input[type=range]:hover {
  3552.         filter: none;
  3553.       }
  3554.     }
  3555.     .range-edit {
  3556.       box-shadow: 0 .5em 1em .5em #000;
  3557.     }
  3558.     .matching-domain {
  3559.       border-color: #0065af;
  3560.       background: #032b58;
  3561.       color: #ddd;
  3562.     }
  3563.     #_cssApp {
  3564.       color: darkseagreen;
  3565.     }
  3566.     #_installHint {
  3567.       color: greenyellow;
  3568.     }
  3569.     ::-webkit-scrollbar {
  3570.       width: 14px;
  3571.       height: 14px;
  3572.       background: #333;
  3573.     }
  3574.     ::-webkit-scrollbar-button:single-button {
  3575.       background: radial-gradient(circle at center, #555 40%, #333 40%)
  3576.     }
  3577.     ::-webkit-scrollbar-track-piece {
  3578.       background: #444;
  3579.       border: 4px solid #333;
  3580.       border-radius: 8px;
  3581.     }
  3582.     ::-webkit-scrollbar-thumb {
  3583.       border: 3px solid #333;
  3584.       border-radius: 8px;
  3585.       background: #666;
  3586.     }
  3587.     ::-webkit-resizer {
  3588.       background: #111 linear-gradient(-45deg, transparent 3px, #888 3px, #888 4px, transparent 4px, transparent 6px, #888 6px, #888 7px, transparent 7px) no-repeat;
  3589.       border: 2px solid transparent;
  3590.     }
  3591.   }
  3592. `;
  3593.  
  3594. function createSetupElement() {
  3595.   const MPIV_BASE_URL = 'https://github.com/tophf/mpiv/wiki/';
  3596.   const scalesHint = 'Leave it empty and click Apply or OK to restore the default values.';
  3597.   const $newLink = (text, href, props) =>
  3598.     $new('a', Object.assign({target: '_blank'}, href && {href}, props), text);
  3599.   const $newCheck = (label, id, title = '', props) =>
  3600.     $new('label', Object.assign({title}, props), [
  3601.       $new('input', {id, type: 'checkbox'}),
  3602.       label,
  3603.     ]);
  3604.   const $newKbd = (str, tag = 'fragment') =>
  3605.     $new(tag, str.split(/({.+?})/).map(s => s[0] === '{' ? $new('kbd', s.slice(1, -1)) : s));
  3606.   const $newRange = (id, title = '', min = 0, max = 100, step = 1, type = 'range') =>
  3607.     $new('input', {id, min, max, step, type, 'data-title': title});
  3608.   const $newSelect = (label, id, values) =>
  3609.     $new('label', [
  3610.       label,
  3611.       $new('select', {id}, Object.entries(values).map(([k, v]) =>
  3612.         $new('option', Object.assign({value: k}, typeof v === 'object' ? v : {textContent: v})))),
  3613.     ]);
  3614.   const $newTable = obj =>
  3615.     $new('table#_usage', Object.entries(obj).map(([name, val]) =>
  3616.       $new('tr', name.startsWith('---') ? $new('td', '\xA0') : [
  3617.         $new('th', name),
  3618.         ...ensureArray(val).map(cell => cell instanceof Node ? cell : $newKbd(cell, 'td')),
  3619.       ])));
  3620.   return [
  3621.     $new('style', CSS_SETUP),
  3622.     $new('style#_css', cfg._getCss()),
  3623.     $new(`main#${PREFIX}setup`, [
  3624.       $new('div#_x', 'x'),
  3625.       $new('ul.column', [
  3626.         $new('details', {style: 'margin: -1em 0 0'}, [
  3627.           $new('summary', {style: 'cursor: pointer; font: bold 16px normal; margin-bottom: .5em'},
  3628.             $new('b', 'MPIV Help & hotkeys')),
  3629.           $newTable({
  3630.             'Activate': 'move mouse cursor over thumbnail',
  3631.             'Deactivate': 'move cursor off thumbnail, or click, or zoom out fully',
  3632.             'Prevent/freeze': 'hold down {Shift} while entering/leaving thumbnail',
  3633.             'Force-activate\n(videos or small pics)': 'hold {Ctrl} while entering image element',
  3634.             '---1': '',
  3635.             'Start zooming':
  3636.               'configurable: automatic or via right-click / {Shift} while popup is visible',
  3637.             'Zoom': 'mouse wheel',
  3638.             'Rotate': '{L} {r} keys (left or right)',
  3639.             'Flip/mirror': '{h} {v} keys (horizontally or vertically)',
  3640.             'Previous/next\nin album': 'mouse wheel, {j} {k} or {←} {→} keys',
  3641.             'Night mode toggle': '{n} key',
  3642.             '---2': '',
  3643.           }),
  3644.           $newTable({
  3645.             'Antialiasing on/off': ['{a}', $new('td', {rowSpan: 4}, 'key while popup is visible')],
  3646.             'Download': '{d}',
  3647.             'Mute/unmute': '{m}',
  3648.             'Open in tab': '{t}',
  3649.           }),
  3650.         ]),
  3651.         $new('li.options.stretch', [
  3652.           $newSelect('Popup shows on', 'start', {
  3653.             context: 'Right-click / \u2261 / Ctrl',
  3654.             contextMK: 'Right-click / \u2261',
  3655.             contextM: 'Right-click',
  3656.             contextK: {
  3657.               textContent: '\u2261 key',
  3658.               title: '\u2261 is the Menu key (near the right Ctrl)',
  3659.             },
  3660.             ctrl: 'Ctrl',
  3661.             auto: 'automatically',
  3662.           }),
  3663.           $new('label', ['after, sec', $newRange('delay', 'seconds', .05, 10, .05, 'number')]),
  3664.           $new('label', {title: '(if the full version of the hovered image is ...% larger)'},
  3665.             ['if larger, %', $newRange('scale', null, 0, 100, 1, 'number')]),
  3666.           $newSelect('Zoom activates on', 'zoom', {
  3667.             context: 'Right click / Shift',
  3668.             wheel: 'Wheel up / Shift',
  3669.             shift: 'Shift',
  3670.             auto: 'automatically',
  3671.           }),
  3672.           $newSelect('...and zooms to', 'fit', {
  3673.             'all': 'fit to window',
  3674.             'large': 'fit if larger',
  3675.             'no': '100%',
  3676.             '': {textContent: 'custom', title: 'Use custom scale factors'},
  3677.           }),
  3678.         ]),
  3679.         $new('li.options', [
  3680.           $new('label', ['Zoom step, %', $newRange('zoomStep', null, 100, 400, 1, 'number')]),
  3681.           $newSelect('When fully zoomed out:', 'zoomOut', {
  3682.             stay: 'stay in zoom mode',
  3683.             auto: 'stay if still hovered',
  3684.             unzoom: 'undo zoom mode',
  3685.             close: 'close popup',
  3686.           }),
  3687.           $new('label', {
  3688.             style: 'flex: 1',
  3689.             title: `
  3690.               Scale factors to use when “zooms to” selector is set to “custom”.
  3691.               0 = fit to window,
  3692.               0! = same as 0 but also removes smaller values,
  3693.               * after a value marks the default zoom factor, for example: 1*
  3694.               The popup won't shrink below the image's natural size or window size for bigger mages.
  3695.               ${scalesHint}
  3696.             `.trim().replace(/\n\s+/g, '\r'),
  3697.           }, ['Custom scale factors:', $new('input#scales', {placeholder: scalesHint})]),
  3698.         ]),
  3699.         $new('li.options.row', [
  3700.           $new([
  3701.             $newCheck('Centered*', 'center',
  3702.               '...or try to keep the original link/thumbnail unobscured by the popup'),
  3703.             $newCheck('Preload on hover*', 'preload',
  3704.               'Provides smoother experience but increases network traffic'),
  3705.             $newCheck('Run in image tabs', 'imgtab'),
  3706.             $newCheck('Require Ctrl key for <video>', 'videoCtrl'),
  3707.             $newCheck('Keep preview on blur*', 'keepOnBlur',
  3708.               'i.e. when mouse pointer moves outside the page'),
  3709.           ]),
  3710.           $new([
  3711.             $newCheck('Night mode', 'night'),
  3712.             $newCheck('Mute videos', 'mute'),
  3713.             $newCheck('Spoof hotlinking*`, ', 'xhr',
  3714.               'Disable only if you spoof the HTTP headers yourself'),
  3715.             $newCheck('Set status on <html>*', 'globalStatus',
  3716.               "Causes slowdowns so don't enable unless you explicitly use it in your custom CSS"),
  3717.             $newCheck('Keep playing video*', 'keepVids',
  3718.               '...until you press Esc key or click elsewhere'),
  3719.           ]),
  3720.           $new([
  3721.             $newCheck('Show when fully loaded*', 'waitLoad',
  3722.               '...or show a partial image while still loading'),
  3723.             $newCheck('Fade-in transition', 'uiFadein'),
  3724.             $newCheck('Fade-in transition in gallery', 'uiFadeinGallery'),
  3725.             $newCheck('Auto-start switch in menu*', 'startAltShown',
  3726.               "Show a switch for 'auto-start' mode in userscript manager menu"),
  3727.           ]),
  3728.         ]),
  3729.         $new('li.options.stretch', [
  3730.           $new('label', [
  3731.             'Background',
  3732.             $new('span', [
  3733.               $new('input#uiBackgroundColor', {type: 'color'}), $new('u'),
  3734.               $newRange('uiBackgroundOpacity', 'Opacity: $%'),
  3735.             ]),
  3736.           ]),
  3737.           $new('label', [
  3738.             'Border color, opacity, size',
  3739.             $new('span', [
  3740.               $new('input#uiBorderColor', {type: 'color'}), $new('u'),
  3741.               $newRange('uiBorderOpacity', 'Opacity: $%'),
  3742.               $newRange('uiBorder', 'Border size: $px', 0, 20),
  3743.             ]),
  3744.           ]),
  3745.           $new('label', [
  3746.             'Shadow color, opacity, size',
  3747.             $new('span', [
  3748.               $new('input#uiShadowColor', {type: 'color'}), $new('u'),
  3749.               $newRange('uiShadowOpacity', 'Opacity: $%'),
  3750.               $newRange('uiShadow', 'Shadow blur radius: $px\n"0" disables the shadow.', 0, 20),
  3751.             ]),
  3752.           ]),
  3753.           $new('label', ['Padding', $new('span', $newRange('uiPadding', 'Padding: $px'))]),
  3754.           $new('label', ['Margin', $new('span', $newRange('uiMargin', 'Margin: $px'))]),
  3755.         ]),
  3756.         $new('li', [
  3757.           $newLink('Custom CSS:', `${MPIV_BASE_URL}Custom-CSS`),
  3758.           ' e.g. ', $new('b', '#mpiv-popup { animation: none !important }'),
  3759.           $newLink('View the built-in CSS', '', {
  3760.             id: '_reveal',
  3761.             tabIndex: 0,
  3762.             style: 'float: right',
  3763.             title: 'You can copy parts of it to override them in your custom CSS',
  3764.           }),
  3765.           $new('.column', [
  3766.             $new('textarea#css', {spellcheck: false}),
  3767.             $new('textarea#_cssApp', {spellcheck: false, hidden: true, readOnly: true, rows: 30}),
  3768.           ]),
  3769.         ]),
  3770.         $new('li', {style: 'display: flex; justify-content: space-between;'}, [
  3771.           $new('div',
  3772.             $newLink('Custom host rules:', `${MPIV_BASE_URL}Custom-host-rules`)),
  3773.           $new('div', {style: 'white-space: pre-line'}, [
  3774.             'To disable, put any symbol except ', $new('code', 'a..z 0..9 - .'),
  3775.             '\nin "d" value, for example ', $new('code', '"d": "!foo.com"'),
  3776.           ]),
  3777.           $new('div',
  3778.             $new('input#_search',
  3779.               {type: 'search', placeholder: 'Search', style: 'width: 10em; margin-left: 1em'})),
  3780.         ]),
  3781.         $new('li', {
  3782.           style: 'margin-left: -3px; margin-right: -3px; overflow-y: auto; ' +
  3783.                  'padding-left: 3px; padding-right: 3px;',
  3784.         }, [
  3785.           $new('div#_rules.column',
  3786.             $new('textarea', {spellcheck: false, rows: 1})),
  3787.         ]),
  3788.         $new('li', [
  3789.           $new('div#_installLoading', {hidden: true}, 'Loading...'),
  3790.           $new('div#_installHint', {hidden: true}, [
  3791.             'Double-click the rule (or select and press Enter) to add it. ',
  3792.             'Click ', $new('code', 'Apply'), ' or ', $new('code', 'OK'), ' to confirm.',
  3793.           ]),
  3794.           $newLink('Install rule from repository...', `${MPIV_BASE_URL}Rules`, {id: '_install'}),
  3795.         ]),
  3796.       ]),
  3797.       $new('div', {style: 'text-align:center'}, [
  3798.         $new('button#_ok', {accessKey: 'o'}, 'OK'),
  3799.         $new('button#_apply', {accessKey: 'a'}, 'Apply'),
  3800.         $new('button#_import', {style: 'margin-right: 0'}, 'Import'),
  3801.         $new('button#_export', {style: 'margin-left: 0'}, 'Export'),
  3802.         $new('button#_cancel', 'Cancel'),
  3803.         $new('div#_exportNotification', {hidden: true}, 'Copied to clipboard'),
  3804.       ]),
  3805.     ]),
  3806.   ];
  3807. }
  3808.  
  3809. function createGlobalStyle() {
  3810.   App.globalStyle = /*language=CSS*/ (String.raw`
  3811. #\mpiv-bar {
  3812.   position: fixed;
  3813.   z-index: 2147483647;
  3814.   top: 0;
  3815.   left: 0;
  3816.   right: 0;
  3817.   opacity: 0;
  3818.   transition: opacity 1s ease .25s;
  3819.   text-align: center;
  3820.   font-family: sans-serif;
  3821.   font-size: 15px;
  3822.   font-weight: bold;
  3823.   background: #0005;
  3824.   color: white;
  3825.   padding: 4px 10px;
  3826.   text-shadow: .5px .5px 2px #000;
  3827. }
  3828. #\mpiv-bar.\mpiv-show,
  3829. #\mpiv-bar[data-force] {
  3830.   opacity: 1;
  3831. }
  3832. #\mpiv-bar[data-zoom]::after {
  3833.   content: " (" attr(data-zoom) ")";
  3834.   opacity: .8;
  3835. }
  3836. #\mpiv-popup.\mpiv-show {
  3837.   display: inline;
  3838. }
  3839. #\mpiv-popup {
  3840.   display: none;
  3841.   cursor: none;
  3842. ${cfg.uiFadein ? String.raw`
  3843.   animation: .2s \mpiv-fadein both;
  3844.   transition: box-shadow .25s, background-color .25s;
  3845.   ` : ''}
  3846. ${App.popupStyleBase = `
  3847.   border: none;
  3848.   box-sizing: border-box;
  3849.   background-size: cover;
  3850.   position: fixed;
  3851.   z-index: 2147483647;
  3852.   padding: 0;
  3853.   margin: 0;
  3854.   top: 0;
  3855.   left: 0;
  3856.   width: auto;
  3857.   height: auto;
  3858.   transform-origin: center;
  3859.   max-width: none;
  3860.   max-height: none;
  3861. `}
  3862. }
  3863. #\mpiv-popup.\mpiv-show {
  3864.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3865.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3866.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3867.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3868. }
  3869. #\mpiv-popup.\mpiv-show[loaded] {
  3870.   background-color: ${Util.color('Background')};
  3871.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3872. }
  3873. #\mpiv-popup[data-gallery-flip] {
  3874.   animation: none;
  3875.   transition: none;
  3876. }
  3877. #\mpiv-popup[${NOAA_ATTR}],
  3878. #\mpiv-popup.\mpiv-zoom-max {
  3879.   image-rendering: pixelated;
  3880. }
  3881. #\mpiv-popup.\mpiv-night:not(#\\0) {
  3882.   box-shadow: 0 0 0 9999px #000;
  3883. }
  3884. body:has(#\mpiv-popup.\mpiv-night)::-webkit-scrollbar {
  3885.   background: #000;
  3886. }
  3887. #\mpiv-setup {
  3888. }
  3889. @keyframes \mpiv-fadein {
  3890.   from {
  3891.     opacity: 0;
  3892.     border-color: transparent;
  3893.   }
  3894.   to {
  3895.     opacity: 1;
  3896.   }
  3897. }
  3898. ` + (cfg.globalStatus ? String.raw`
  3899. :root.\mpiv-loading:not(.\mpiv-preloading) *:hover {
  3900.   cursor: progress !important;
  3901. }
  3902. :root.\mpiv-edge #\mpiv-popup {
  3903.   cursor: default;
  3904. }
  3905. :root.\mpiv-error *:hover {
  3906.   cursor: not-allowed !important;
  3907. }
  3908. :root.\mpiv-ready *:hover,
  3909. :root.\mpiv-large *:hover {
  3910.   cursor: zoom-in !important;
  3911. }
  3912. :root.\mpiv-shift *:hover {
  3913.   cursor: default !important;
  3914. }
  3915. ` : String.raw`
  3916. [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]):hover {
  3917.   cursor: progress;
  3918. }
  3919. [\mpiv-status~="edge"]:hover {
  3920.   cursor: default;
  3921. }
  3922. [\mpiv-status~="error"]:hover {
  3923.   cursor: not-allowed;
  3924. }
  3925. [\mpiv-status~="ready"]:hover,
  3926. [\mpiv-status~="large"]:hover {
  3927.   cursor: zoom-in;
  3928. }
  3929. [\mpiv-status~="shift"]:hover {
  3930.   cursor: default;
  3931. }
  3932. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3933.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3934.   return App.globalStyle;
  3935. }
  3936.  
  3937. //#region Global utilities
  3938.  
  3939. const clamp = (v, min, max) =>
  3940.   v < min ? min : v > max ? max : v;
  3941.  
  3942. const compareNumbers = (a, b) =>
  3943.   a - b;
  3944.  
  3945. const flattenHtml = str =>
  3946.   str.trim().replace(/\n\s*/g, '');
  3947.  
  3948. const dropEvent = e =>
  3949.   (e.preventDefault(), e.stopPropagation());
  3950.  
  3951. const ensureArray = v =>
  3952.   Array.isArray(v) ? v : [v];
  3953.  
  3954. /** @param {KeyboardEvent} e */
  3955. const eventModifiers = e =>
  3956.   (e.altKey ? '!' : '') +
  3957.   (e.ctrlKey ? '^' : '') +
  3958.   (e.metaKey ? '#' : '') +
  3959.   (e.shiftKey ? '+' : '');
  3960.  
  3961. /** @param {KeyboardEvent} e */
  3962. const describeKey = e => eventModifiers(e) + (e.key && e.key.length > 1 ? e.key : e.code);
  3963.  
  3964. const getObjProp = (obj, path) => {
  3965.   if (obj && path)
  3966.     for (const p of path.split('.'))
  3967.       if (obj) obj = obj[p]; else break;
  3968.   return obj;
  3969. };
  3970.  
  3971. const isFunction = val => typeof val === 'function';
  3972.  
  3973. const isVideo = el => el && el.tagName === 'VIDEO';
  3974.  
  3975. const now = performance.now.bind(performance);
  3976.  
  3977. const sumProps = (...props) => {
  3978.   let sum = 0;
  3979.   for (const p of props)
  3980.     sum += parseFloat(p) || 0;
  3981.   return sum;
  3982. };
  3983.  
  3984. const tryCatch = function (fn, ...args) {
  3985.   try {
  3986.     return fn.apply(this, args);
  3987.   } catch (e) {}
  3988. };
  3989.  
  3990. const tryJSON = str =>
  3991.   tryCatch(JSON.parse, str);
  3992.  
  3993. const pick = (obj, path, fn) => (
  3994.   obj = path.split(/[[.]/).reduce((res, k) => res && res[k.endsWith(']') ? k.slice(0, -1) : k], obj)
  3995. ) && (fn ? fn(obj) : obj);
  3996.  
  3997. const $ = (sel, node = doc) =>
  3998.   node.querySelector(sel) || false;
  3999.  
  4000. const $$ = (sel, node = doc) =>
  4001.   node.querySelectorAll(sel);
  4002.  
  4003. const $new = (sel, props, children) => {
  4004.   if (typeof sel !== 'string') {
  4005.     children = props;
  4006.     props = sel;
  4007.     sel = '';
  4008.   }
  4009.   if (!children && props != null && ({}).toString.call(props) !== '[object Object]') {
  4010.     children = props;
  4011.     props = null;
  4012.   }
  4013.   const isFrag = sel === 'fragment';
  4014.   const [, tag, id, cls] = sel.match(/^(\w*)(?:#([^.]+))?(?:\.(.+))?$/);
  4015.   const el = isFrag ? doc.createDocumentFragment() : doc.createElement(tag || 'div');
  4016.   if (id) el.id = id;
  4017.   if (cls) el.className = cls.replace(/\./g, ' ');
  4018.   if (props) {
  4019.     for (const [k, v] of Object.entries(props)) {
  4020.       if (!k.startsWith('data-')) {
  4021.         el[k] = v;
  4022.       } else if (v != null) {
  4023.         el.setAttribute(k, v);
  4024.       }
  4025.     }
  4026.   }
  4027.   if (children != null) {
  4028.     if (Array.isArray(children))
  4029.       el.append(...children.filter(Boolean));
  4030.     else if (children instanceof Node)
  4031.       el.appendChild(children);
  4032.     else
  4033.       el.textContent = children;
  4034.   }
  4035.   return el;
  4036. };
  4037.  
  4038. const $css = (el, props) =>
  4039.   Object.entries(props).forEach(([k, v]) =>
  4040.     el.style.setProperty(k, v, 'important'));
  4041.  
  4042. const $parseHtml = str =>
  4043.   new DOMParser().parseFromString(str, 'text/html');
  4044.  
  4045. const $many = (q, doc) => {
  4046.   for (const selector of ensureArray(q)) {
  4047.     const el = selector && $(selector, doc);
  4048.     if (el)
  4049.       return el;
  4050.   }
  4051. };
  4052.  
  4053. const $prop = (sel, prop, node = doc) =>
  4054.   (node = $(sel, node)) && node[prop] || '';
  4055.  
  4056. const $propUp = (node, prop) =>
  4057.   (node = node.closest(`[${prop}]`)) &&
  4058.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  4059.   '';
  4060.  
  4061. const $remove = node =>
  4062.   node && node.remove();
  4063.  
  4064. //#endregion
  4065. //#region Init
  4066.  
  4067. (async () => {
  4068.   cfg = await Config.load({save: true});
  4069.   if (!doc.body) {
  4070.     await new Promise(resolve =>
  4071.       new MutationObserver((_, mo) => doc.body && (mo.disconnect(), resolve()))
  4072.         .observe(document, {subtree: true, childList: true}));
  4073.   }
  4074.   const el = doc.body.firstElementChild;
  4075.   if (el) {
  4076.     App.isImageTab = el === doc.body.lastElementChild && el.matches('img, video');
  4077.     App.isEnabled = cfg.imgtab || !App.isImageTab;
  4078.   }
  4079.   if (Menu) Menu.register();
  4080.   addEventListener('mouseover', Events.onMouseOver, true);
  4081.   addEventListener('contextmenu', Events.onContext, true);
  4082.   addEventListener('keydown', Events.onKeyDown, true);
  4083.   addEventListener('visibilitychange', Events.onVisibility, true);
  4084.   addEventListener('blur', Events.onVisibility, true);
  4085.   if (['greasyfork.org', 'github.com'].includes(hostname))
  4086.     addEventListener('click', setupClickedRule, true);
  4087.   addEventListener('message', App.onMessage, true);
  4088. })();
  4089.  
  4090. if (window.trustedTypes) {
  4091.   const TT = window.trustedTypes;
  4092.   const CP = 'createPolicy';
  4093.   const createPolicy = TT[CP];
  4094.   TT[CP] = function ovr(name, opts) {
  4095.     let fn;
  4096.     const p = createPolicy.call(TT, name, opts);
  4097.     if ((trustedHTML || (fn = opts.createHTML) && (trustedHTML = fn.bind(p))) &&
  4098.         (trustedScript || (fn = opts.createScript) && (trustedScript = fn.bind(p))) &&
  4099.         TT[CP] === ovr)
  4100.       TT[CP] = createPolicy;
  4101.     return p;
  4102.   };
  4103. }
  4104.  
  4105. //#endregion