☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

目前為 2022-05-05 提交的版本，檢視 最新版本。

  1. // ==UserScript==
  2. // @name        Mouseover Popup Image Viewer
  3. // @namespace   https://github.com/tophf
  4. // @description Shows images and videos behind links and thumbnails.
  5. //
  6. // @include     *
  7. //
  8. // @grant       GM_addElement
  9. // @grant       GM_download
  10. // @grant       GM_getValue
  11. // @grant       GM_openInTab
  12. // @grant       GM_registerMenuCommand
  13. // @grant       GM_unregisterMenuCommand
  14. // @grant       GM_setClipboard
  15. // @grant       GM_setValue
  16. // @grant       GM_xmlhttpRequest
  17. //
  18. // @grant       GM.getValue
  19. // @grant       GM.openInTab
  20. // @grant       GM.registerMenuCommand
  21. // @grant       GM.unregisterMenuCommand
  22. // @grant       GM.setClipboard
  23. // @grant       GM.setValue
  24. // @grant       GM.xmlHttpRequest
  25. //
  26. // @version     1.2.23
  27. // @author      tophf
  28. //
  29. // @original-version 2017.9.29
  30. // @original-author  kuehlschrank
  31. //
  32. // @connect     *
  33. // CSP check:
  34. // @connect     self
  35. // rule installer in config dialog:
  36. // @connect     github.com
  37. // big/trusted hostings for the built-in rules with "q":
  38. // @connect     deviantart.com
  39. // @connect     facebook.com
  40. // @connect     fbcdn.com
  41. // @connect     flickr.com
  42. // @connect     gfycat.com
  43. // @connect     googleusercontent.com
  44. // @connect     gyazo.com
  45. // @connect     imgur.com
  46. // @connect     instagr.am
  47. // @connect     instagram.com
  48. // @connect     prnt.sc
  49. // @connect     prntscr.com
  50. // @connect     user-images.githubusercontent.com
  51. //
  52. // @supportURL  https://github.com/tophf/mpiv/issues
  53. // @icon        https://raw.githubusercontent.com/tophf/mpiv/master/icon.png
  54. // ==/UserScript==
  55.  
  56. 'use strict';
  57.  
  58. //#region Globals
  59.  
  60. /** @type mpiv.Config */
  61. let cfg;
  62. /** @type mpiv.AppInfo */
  63. let ai = {rule: {}};
  64. /** @type Element */
  65. let elSetup;
  66. let nonce;
  67.  
  68. const doc = document;
  69. const hostname = location.hostname;
  70. const dotDomain = '.' + hostname;
  71. const isGoogleDomain = /(^|\.)google(\.com?)?(\.\w+)?$/.test(hostname);
  72. const isGoogleImages = isGoogleDomain && /[&?]tbm=isch(&|$)/.test(location.search);
  73. const isFF = CSS.supports('-moz-appearance', 'none');
  74. const AudioContext = window.AudioContext || function () {};
  75.  
  76. const PREFIX = 'mpiv-';
  77. const STATUS_ATTR = `${PREFIX}status`;
  78. const MSG = Object.assign({}, ...[
  79.   'getViewSize',
  80.   'viewSize',
  81. ].map(k => ({[k]: `${PREFIX}${k}`})));
  82. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  83. // time for volatile things to settle down meanwhile we postpone action
  84. // examples: loading image from cache, quickly moving mouse over one element to another
  85. const SETTLE_TIME = 50;
  86. // used to detect JS code in host rules
  87. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  88. const RX_EVAL_BLOCKED = /'Trusted(Script| Type)'|unsafe-eval/;
  89. const RX_MEDIA_URL = /^(?!data:)[^?#]+?\.(avif|bmp|jpe?g?|gif|mp4|png|svgz?|web[mp])($|[?#])/i;
  90. const ZOOM_MAX = 16;
  91. const SYM_U = Symbol('u');
  92. const TRUSTED = (({trustedTypes}, policy) =>
  93.   trustedTypes ? trustedTypes.createPolicy('mpiv', policy) : policy
  94. )(window, {
  95.   createHTML: str => str,
  96.   createScript: str => str,
  97. });
  98. const FN_ARGS = {
  99.   s: ['m', 'node', 'rule'],
  100.   c: ['text', 'doc', 'node', 'rule'],
  101.   q: ['text', 'doc', 'node', 'rule'],
  102.   g: ['text', 'doc', 'url', 'm', 'rule', 'node', 'cb'],
  103. };
  104. //#endregion
  105. //#region GM4 polyfill
  106.  
  107. if (typeof GM === 'undefined' || !GM.xmlHttpRequest)
  108.   this.GM = {info: GM_info};
  109. if (!GM.getValue)
  110.   GM.getValue = GM_getValue; // we use it only with `await` so no need to return a Promise
  111. if (!GM.setValue)
  112.   GM.setValue = GM_setValue; // we use it only with `await` so no need to return a Promise
  113. if (!GM.openInTab)
  114.   GM.openInTab = GM_openInTab;
  115. if (!GM.registerMenuCommand && typeof GM_registerMenuCommand === 'function')
  116.   GM.registerMenuCommand = GM_registerMenuCommand;
  117. if (!GM.unregisterMenuCommand && typeof GM_unregisterMenuCommand === 'function')
  118.   GM.unregisterMenuCommand = GM_unregisterMenuCommand;
  119. if (!GM.setClipboard)
  120.   GM.setClipboard = GM_setClipboard;
  121. if (!GM.xmlHttpRequest)
  122.   GM.xmlHttpRequest = GM_xmlhttpRequest;
  123.  
  124. //#endregion
  125.  
  126. const App = {
  127.  
  128.   isEnabled: true,
  129.   isImageTab: false,
  130.   globalStyle: '',
  131.   popupStyleBase: '',
  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.toggle(true);
  148.     Events.trackMouse(event);
  149.     if (ai.force) {
  150.       App.start();
  151.     } else if (auto && !vidCtrl && !rule.manual) {
  152.       App.belate();
  153.     } else {
  154.       Status.set('ready');
  155.     }
  156.   },
  157.  
  158.   belate() {
  159.     if (cfg.preload) {
  160.       ai.preloadStart = now();
  161.       App.start();
  162.       Status.set('+preloading');
  163.       setTimeout(Status.set, cfg.delay, '-preloading');
  164.     } else {
  165.       ai.timer = setTimeout(App.start, cfg.delay);
  166.     }
  167.   },
  168.  
  169.   checkImageTab() {
  170.     const el = doc.body.firstElementChild;
  171.     App.isImageTab = el && el === doc.body.lastElementChild && el.matches('img, video');
  172.     App.isEnabled = cfg.imgtab || !App.isImageTab;
  173.   },
  174.  
  175.   checkProgress({start} = {}) {
  176.     const p = ai.popup;
  177.     if (!p)
  178.       return;
  179.     const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  180.     const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  181.     if (h)
  182.       return App.canCommit(w, h);
  183.     if (start) {
  184.       clearInterval(ai.timerProgress);
  185.       ai.timerProgress = setInterval(App.checkProgress, 150);
  186.     }
  187.   },
  188.  
  189.   canCloseVid() {
  190.     return !ai || !ai.popup || !isVideo(ai.popup) || !cfg.keepVids;
  191.   },
  192.  
  193.   canCommit(w, h) {
  194.     if (!ai.force && ai.rect && !ai.gItems &&
  195.         Math.max(w / (ai.rect.width || 1), h / (ai.rect.height || 1)) < cfg.scale) {
  196.       App.deactivate();
  197.       return false;
  198.     }
  199.     App.stopTimers();
  200.     const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  201.     if (wait > 0) {
  202.       ai.timer = setTimeout(App.checkProgress, wait);
  203.     } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  204.       App.handleError({type: 'error'});
  205.     } else {
  206.       App.commit();
  207.     }
  208.     return true;
  209.   },
  210.  
  211.   async commit() {
  212.     const p = ai.popup;
  213.     const isDecoded = cfg.waitLoad && isFunction(p.decode);
  214.     if (isDecoded) {
  215.       await p.decode();
  216.       if (p !== ai.popup)
  217.         return;
  218.     }
  219.     App.updateStyles();
  220.     Calc.measurePopup();
  221.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  222.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  223.     if (willMove)
  224.       Popup.move();
  225.     Bar.updateName();
  226.     Bar.updateDetails();
  227.     Status.set(!ai.popupLoaded && 'loading');
  228.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  229.                ai.nheight > p.clientHeight + ai.extras.h;
  230.     if (ai.large) {
  231.       Status.set('+large');
  232.       // prevent a blank bg+border in FF
  233.       if (isFF && p.complete && !isDecoded)
  234.         p.style.backgroundImage = `url('${p.src}')`;
  235.     }
  236.   },
  237.  
  238.   deactivate({wait} = {}) {
  239.     App.stopTimers();
  240.     if (ai.req)
  241.       tryCatch.call(ai.req, ai.req.abort);
  242.     if (ai.tooltip)
  243.       ai.tooltip.node.title = ai.tooltip.text;
  244.     Status.set(false);
  245.     Bar.set(false);
  246.     Events.toggle(false);
  247.     Popup.destroy();
  248.     if (wait) {
  249.       App.isEnabled = false;
  250.       setTimeout(App.enable, 200);
  251.     }
  252.     ai = {rule: {}};
  253.   },
  254.  
  255.   enable() {
  256.     App.isEnabled = true;
  257.   },
  258.  
  259.   handleError(e, rule = ai.rule) {
  260.     if (rule && rule.onerror === 'skip')
  261.       return;
  262.     if (ai.imageUrl &&
  263.         !ai.xhr &&
  264.         !ai.imageUrl.startsWith(location.origin + '/') &&
  265.         location.protocol === 'https:' &&
  266.         CspSniffer.init) {
  267.       Popup.create(ai.imageUrl, ai.pageUrl, e);
  268.       return;
  269.     }
  270.     const fe = Util.formatError(e, rule);
  271.     if (!rule || !ai.urls || !ai.urls.length)
  272.       console.warn(fe.consoleFormat, ...fe.consoleArgs);
  273.     if (ai.urls && ai.urls.length) {
  274.       ai.url = ai.urls.shift();
  275.       if (ai.url) {
  276.         App.stopTimers();
  277.         App.startSingle();
  278.       } else {
  279.         App.deactivate();
  280.       }
  281.     } else if (ai.node) {
  282.       Status.set('error');
  283.       Bar.set(fe.message, 'error');
  284.     }
  285.   },
  286.  
  287.   /** @param {MessageEvent} e */
  288.   onMessage(e) {
  289.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  290.       e.stopImmediatePropagation();
  291.       for (const el of doc.getElementsByTagName('iframe')) {
  292.         if (el.contentWindow === e.source) {
  293.           const s = Calc.frameSize(el, window).join(':');
  294.           e.source.postMessage(`${MSG.viewSize}:${s}`, '*');
  295.           return;
  296.         }
  297.       }
  298.     }
  299.   },
  300.  
  301.   /** @param {MessageEvent} e */
  302.   onMessageChild(e) {
  303.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  304.       e.stopImmediatePropagation();
  305.       removeEventListener('message', App.onMessageChild, true);
  306.       const [w, h, x, y] = e.data.split(':').slice(1).map(parseFloat);
  307.       if (w && h) ai.view = {w, h, x, y};
  308.     }
  309.   },
  310.  
  311.   start() {
  312.     // check explicitly as the cursor may have moved into an iframe so mouseout wasn't reported
  313.     if (!Util.isHovered(ai.node)) {
  314.       App.deactivate();
  315.       return;
  316.     }
  317.     App.updateStyles();
  318.     if (ai.gallery)
  319.       App.startGallery();
  320.     else
  321.       App.startSingle();
  322.   },
  323.  
  324.   startSingle() {
  325.     Status.loading();
  326.     ai.imageUrl = null;
  327.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  328.       Req.findRedirect();
  329.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  330.       App.startFromQ();
  331.     } else {
  332.       Popup.create(ai.url);
  333.       Ruler.runC();
  334.     }
  335.   },
  336.  
  337.   async startFromQ() {
  338.     try {
  339.       const {responseText, doc, finalUrl} = await Req.getDoc(ai.url);
  340.       const url = Ruler.runQ(responseText, doc, finalUrl);
  341.       if (!url)
  342.         throw 'The "q" rule did not produce any URL.';
  343.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  344.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  345.         if (!info || !info.url)
  346.           throw `Couldn't follow URL: ${url}`;
  347.         Object.assign(ai, info);
  348.         App.startSingle();
  349.       } else {
  350.         Popup.create(url, finalUrl);
  351.         Ruler.runC(responseText, doc);
  352.       }
  353.     } catch (e) {
  354.       App.handleError(e);
  355.     }
  356.   },
  357.  
  358.   async startGallery() {
  359.     Status.loading();
  360.     try {
  361.       const startUrl = ai.url;
  362.       const p = await Req.getDoc(ai.rule.s !== 'gallery' && startUrl);
  363.       const items = await new Promise(resolve => {
  364.         const it = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, ai.node,
  365.           resolve);
  366.         if (Array.isArray(it))
  367.           resolve(it);
  368.       });
  369.       // bail out if the gallery's async callback took too long
  370.       if (ai.url !== startUrl) return;
  371.       ai.gNum = items.length;
  372.       ai.gItems = items.length && items;
  373.       if (ai.gItems) {
  374.         const i = items.index;
  375.         ai.gIndex = i === (i | 0) && items[i] ? i | 0 :
  376.           typeof i === 'string' ? clamp(items.findIndex(x => x.url === i), 0) :
  377.             Gallery.findIndex(ai.url);
  378.         setTimeout(Gallery.next);
  379.       } else {
  380.         throw 'Empty gallery';
  381.       }
  382.     } catch (e) {
  383.       App.handleError(e);
  384.     }
  385.   },
  386.  
  387.   stopTimers() {
  388.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  389.       clearTimeout(ai[timer]);
  390.     clearInterval(ai.timerProgress);
  391.   },
  392.  
  393.   toggleZoom({keepScale} = {}) {
  394.     const p = ai.popup;
  395.     if (!p || !ai.scales || ai.scales.length < 2)
  396.       return;
  397.     ai.zoomed = !ai.zoomed;
  398.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  399.     if (ai.zooming)
  400.       p.classList.add(`${PREFIX}zooming`);
  401.     Popup.move();
  402.     Bar.updateDetails();
  403.     Status.set(ai.zoomed ? 'zoom' : false);
  404.     return ai.zoomed;
  405.   },
  406.  
  407.   updateStyles() {
  408.     Util.addStyle('global', (App.globalStyle || createGlobalStyle()) + cfg._getCss());
  409.     Util.addStyle('rule', ai.rule.css || '');
  410.   },
  411. };
  412.  
  413. const Bar = {
  414.  
  415.   set(label, className) {
  416.     let b = ai.bar;
  417.     if (typeof label !== 'string') {
  418.       $remove(b);
  419.       ai.bar = null;
  420.       return;
  421.     }
  422.     if (!b) b = ai.bar = $new('div', {id: `${PREFIX}bar`});
  423.     App.updateStyles();
  424.     Bar.updateDetails();
  425.     Bar.show();
  426.     b.textContent = '';
  427.     b.innerHTML = TRUSTED.createHTML(label);
  428.     if (!b.parentNode) {
  429.       doc.body.appendChild(b);
  430.       Util.forceLayout(b);
  431.     }
  432.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  433.   },
  434.  
  435.   show(isForced) {
  436.     clearTimeout(ai.timerBar);
  437.     ai.bar.style.removeProperty('opacity');
  438.     if (isForced)
  439.       ai.bar.dataset.force = '';
  440.     else
  441.       ai.timerBar = setTimeout(Bar.hide, 3000);
  442.   },
  443.  
  444.   hide(isForced) {
  445.     if (ai.bar && (isForced || !ai.bar.dataset.force)) {
  446.       $css(ai.bar, {opacity: 0});
  447.       delete ai.bar.dataset.force;
  448.     }
  449.   },
  450.  
  451.   updateName() {
  452.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  453.     if (gi) {
  454.       const item = gi[i];
  455.       const noDesc = !gi.some(_ => _.desc);
  456.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  457.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  458.         item.desc,
  459.       ].filter(Boolean).join(' - ')}`;
  460.       Bar.set(c.trim() || ' ', 'gallery', true);
  461.     } else if ('caption' in ai) {
  462.       Bar.set(ai.caption, 'caption');
  463.     } else if (ai.tooltip) {
  464.       Bar.set(ai.tooltip.text, 'tooltip');
  465.     } else {
  466.       Bar.set(' ', 'info');
  467.     }
  468.   },
  469.  
  470.   updateDetails() {
  471.     if (!ai.bar) return;
  472.     const r = ai.rotate;
  473.     const zoom = ai.nwidth && `${
  474.       Math.round(ai.scale * 100)
  475.     }%${
  476.       ai.flipX || ai.flipY ? `, ${ai.flipX ? '⇆' : ''}${ai.flipY ? '⇅' : ''}` : ''
  477.     }${
  478.       r ? ', ' + (r > 180 ? r - 360 : r) + '°' : ''
  479.     }, ${
  480.       ai.nwidth
  481.     } x ${
  482.       ai.nheight
  483.     } px, ${
  484.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  485.     } MP, ${
  486.       Calc.aspectRatio(ai.nwidth, ai.nheight)
  487.     }`.replace(/\x20/g, '\xA0');
  488.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  489.       if (zoom) ai.bar.dataset.zoom = zoom;
  490.       else delete ai.bar.dataset.zoom;
  491.       Bar.show();
  492.     }
  493.   },
  494. };
  495.  
  496. const Calc = {
  497.  
  498.   aspectRatio(w, h) {
  499.     for (let rat = w / h, a, b = 0; ;) {
  500.       b++;
  501.       a = Math.round(w * b / h);
  502.       if (a > 10 && b > 10 || a > 100 || b > 100)
  503.         return rat.toFixed(2);
  504.       if (Math.abs(a / b - rat) < .01)
  505.         return `${a}:${b}`;
  506.     }
  507.   },
  508.  
  509.   frameSize(elFrame, wnd) {
  510.     if (!elFrame) return;
  511.     const r = elFrame.getBoundingClientRect();
  512.     const w = Math.min(r.right, wnd.innerWidth) - Math.max(r.left, 0);
  513.     const h = Math.min(r.bottom, wnd.innerHeight) - Math.max(r.top, 0);
  514.     const x = r.left < 0 ? -r.left : 0;
  515.     const y = r.top < 0 ? -r.top : 0;
  516.     return [w, h, x, y];
  517.   },
  518.  
  519.   generateScales(fit) {
  520.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  521.     const zoomStep = cfg.zoomStep / 100;
  522.     const arr = [scale];
  523.     if (fit !== 1) {
  524.       const diff = goal / scale;
  525.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  526.       const step = steps && Math.pow(diff, 1 / steps);
  527.       for (let i = steps; --i > 0;)
  528.         arr.push((scale *= step));
  529.       arr.push(scale = goal);
  530.     }
  531.     while ((scale *= zoomStep) <= ZOOM_MAX)
  532.       arr.push(scale);
  533.     return arr;
  534.   },
  535.  
  536.   measurePopup() {
  537.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  538.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  539.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  540.     if (p.clientWidth > nw) {
  541.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  542.       nh = ai.nheight = w / nw * nh | 0;
  543.       nw = ai.nwidth = w;
  544.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  545.     }
  546.     p.className = `${PREFIX}show`;
  547.     p.removeAttribute('style');
  548.     const s = getComputedStyle(p);
  549.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  550.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  551.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  552.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  553.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  554.     ai.extras = {
  555.       inw, inh,
  556.       outw, outh,
  557.       o: o2 / 2,
  558.       w: inw + outw,
  559.       h: inh + outh,
  560.     };
  561.     const fit = Math.min(
  562.       (ai.view.w - ai.extras.w) / ai.nwidth,
  563.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  564.     const isCustom = !cfg.fit && cfg.scales.length;
  565.     let cutoff = Math.min(1, fit);
  566.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  567.     if (isCustom) {
  568.       const dst = [];
  569.       for (const scale of cfg.scales) {
  570.         const val = parseFloat(scale) || fit;
  571.         dst.push(val);
  572.         if (isCustom && typeof scale === 'string') {
  573.           if (scale.includes('!')) cutoff = val;
  574.           if (scale.includes('*')) scaleZoom = val;
  575.         }
  576.       }
  577.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  578.     } else {
  579.       ai.scales = Calc.generateScales(fit);
  580.     }
  581.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  582.     ai.scaleFit = fit;
  583.     ai.scaleZoom = scaleZoom;
  584.   },
  585.  
  586.   rect() {
  587.     let {node, rule} = ai;
  588.     let n = rule.rect && node.closest(rule.rect);
  589.     if (n) return n.getBoundingClientRect();
  590.     const nested = node.getElementsByTagName('*');
  591.     let maxArea = 0;
  592.     let maxBounds;
  593.     n = node;
  594.     for (let i = 0; n; n = nested[i++]) {
  595.       const bounds = n.getBoundingClientRect();
  596.       const area = bounds.width * bounds.height;
  597.       if (area > maxArea) {
  598.         maxArea = area;
  599.         maxBounds = bounds;
  600.         node = n;
  601.       }
  602.     }
  603.     return maxBounds;
  604.   },
  605.  
  606.   scaleBiggerThan(scale, i, arr) {
  607.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  608.   },
  609.  
  610.   scaleIndex(dir) {
  611.     const i = ai.scales.indexOf(ai.scale);
  612.     if (i >= 0) return i + dir;
  613.     for (
  614.       let len = ai.scales.length,
  615.         i = dir > 0 ? 0 : len - 1;
  616.       i >= 0 && i < len;
  617.       i += dir
  618.     ) {
  619.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  620.         return i;
  621.     }
  622.     return -1;
  623.   },
  624.  
  625.   scaleForFirstZoom(keepScale) {
  626.     const z = ai.scaleZoom;
  627.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  628.   },
  629.  
  630.   updateViewSize() {
  631.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  632.     ai.view = {w: view.clientWidth, h: view.clientHeight, x: 0, y: 0};
  633.     if (window === top) return;
  634.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  635.     if (w && h) {
  636.       ai.view = {w, h, x: 0, y: 0};
  637.     } else {
  638.       addEventListener('message', App.onMessageChild, true);
  639.       parent.postMessage(MSG.getViewSize, '*');
  640.     }
  641.   },
  642. };
  643.  
  644. class Config {
  645.  
  646.   constructor({data: c, save}) {
  647.     if (typeof c === 'string')
  648.       c = tryJSON(c);
  649.     if (typeof c !== 'object' || !c)
  650.       c = {};
  651.     const {DEFAULTS} = Config;
  652.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  653.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  654.         '';
  655.     if (c.version !== DEFAULTS.version) {
  656.       if (typeof c.hosts === 'string')
  657.         c.hosts = c.hosts.split('\n')
  658.           .map(s => tryJSON(s) || s)
  659.           .filter(Boolean);
  660.       if (c.close === true || c.close === false)
  661.         c.zoomOut = c.close ? 'auto' : 'stay';
  662.       for (const key in DEFAULTS)
  663.         if (typeof c[key] !== typeof DEFAULTS[key])
  664.           c[key] = DEFAULTS[key];
  665.       if (c.version === 3 && c.scales[0] === 0)
  666.         c.scales[0] = '0!';
  667.       for (const key in c)
  668.         if (!(key in DEFAULTS))
  669.           delete c[key];
  670.       c.version = DEFAULTS.version;
  671.       if (save)
  672.         GM.setValue('cfg', c);
  673.     }
  674.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  675.       App.globalStyle = '';
  676.     if (!Array.isArray(c.scales))
  677.       c.scales = [];
  678.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  679.     Object.assign(this, DEFAULTS, c);
  680.   }
  681.  
  682.   static async load(opts) {
  683.     opts.data = await GM.getValue('cfg');
  684.     return new Config(opts);
  685.   }
  686.  
  687.   _getCss() {
  688.     const {css} = this;
  689.     return css.includes('{') ? css : `#${PREFIX}-popup {${css}}`;
  690.   }
  691. }
  692.  
  693. Config.DEFAULTS = /** @type mpiv.Config */ Object.assign(Object.create(null), {
  694.   center: false,
  695.   css: '',
  696.   delay: 500,
  697.   fit: '',
  698.   globalStatus: false,
  699.   // prefer ' inside rules because " will be displayed as \"
  700.   // example: "img[src*='icon']"
  701.   hosts: [{
  702.     name: 'No popup for YouTube thumbnails',
  703.     d: 'www.youtube.com',
  704.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  705.     s: '',
  706.   }, {
  707.     name: 'No popup for SVG/PNG icons',
  708.     d: '',
  709.     e: "img[src*='icon']",
  710.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  711.     s: '',
  712.   }],
  713.   imgtab: false,
  714.   keepOnBlur: false,
  715.   keepVids: false,
  716.   mute: false,
  717.   preload: false,
  718.   scale: 1.25,
  719.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  720.   start: 'auto',
  721.   startAlt: 'context',
  722.   startAltShown: false,
  723.   uiBackgroundColor: '#ffffff',
  724.   uiBackgroundOpacity: 100,
  725.   uiBorderColor: '#000000',
  726.   uiBorderOpacity: 100,
  727.   uiBorder: 0,
  728.   uiFadein: true,
  729.   uiFadeinGallery: true, // some computers show white background while loading so fading hides it
  730.   uiShadowColor: '#000000',
  731.   uiShadowOpacity: 80,
  732.   uiShadow: 20,
  733.   uiPadding: 0,
  734.   uiMargin: 0,
  735.   version: 6,
  736.   videoCtrl: true,
  737.   waitLoad: false,
  738.   xhr: true,
  739.   zoom: 'context',
  740.   zoomOut: 'auto',
  741.   zoomStep: 133,
  742. });
  743.  
  744. const CspSniffer = {
  745.  
  746.   /** @type {?Object<string,string[]>} */
  747.   csp: null,
  748.   selfUrl: location.origin + '/',
  749.  
  750.   // will be null when done
  751.   init() {
  752.     this.busy = new Promise(resolve => {
  753.       const xhr = new XMLHttpRequest();
  754.       xhr.open('get', location);
  755.       xhr.timeout = Math.max(2000, (performance.timing.responseEnd - performance.timeOrigin) * 2);
  756.       xhr.onreadystatechange = () => {
  757.         if (xhr.readyState >= xhr.HEADERS_RECEIVED) {
  758.           this.csp = this._parse(xhr.getResponseHeader('content-security-policy'));
  759.           this.init = this.busy = xhr.onreadystatechange = null;
  760.           xhr.abort();
  761.           resolve();
  762.         }
  763.       };
  764.       xhr.send();
  765.     });
  766.   },
  767.  
  768.   async check(url, allowInit) {
  769.     if (allowInit && this.init) this.init();
  770.     if (this.busy) await this.busy;
  771.     const isVideo = Util.isVideoUrl(url);
  772.     let mode;
  773.     if (this.csp) {
  774.       const src = this.csp[isVideo ? 'media' : 'img'];
  775.       if (!src.some(this._srcMatches, url))
  776.         mode = [mode, 'blob', 'data'].find(m => src.includes(`${m}:`));
  777.     }
  778.     return [mode || ai.xhr, isVideo];
  779.   },
  780.  
  781.   _parse(csp) {
  782.     if (!csp) return;
  783.     const src = {};
  784.     const rx = /(?:^|[;,])\s*(?:(default|img|media|script)-src|require-(trusted)-types-for) ([^;,]+)/g;
  785.     for (let m; (m = rx.exec(csp));)
  786.       src[m[1] || m[2]] = m[3].trim().split(/\s+/);
  787.     if ((src.script || []).find(s => /^'nonce-(.+)'$/.test(s)))
  788.       nonce = RegExp.$1;
  789.     if ((src.trusted || []).includes("'script'"))
  790.       App.NOP = () => {};
  791.     if (!src.img) src.img = src.default || [];
  792.     if (!src.media) src.media = src.default || [];
  793.     for (const set of [src.img, src.media]) {
  794.       set.forEach((item, i) => {
  795.         if (item !== '*' && item.includes('*')) {
  796.           set[i] = new RegExp(
  797.             (/^\w+:/.test(item) ? '^' : '^\\w+://') +
  798.             item
  799.             .replace(/[.+?^$|()[\]{}]/g, '\\$&')
  800.             .replace(/(\\\.)?(\*)(\\\.)?/g, (_, a, b, c) =>
  801.               `${a ? '\\.?' : ''}[^:/]*${c ? '\\.?' : ''}`)
  802.             .replace(/[^/]$/, '$&/'));
  803.         }
  804.       });
  805.     }
  806.     return src;
  807.   },
  808.  
  809.   /** @this string */
  810.   _srcMatches(src) {
  811.     return src instanceof RegExp ? src.test(this) :
  812.       src === '*' ||
  813.       src && this.startsWith(src) && (src.endsWith('/') || this[src.length] === '/') ||
  814.       src === "'self'" && this.startsWith(CspSniffer.selfUrl);
  815.   },
  816. };
  817.  
  818. const Events = {
  819.  
  820.   ctrl: false,
  821.   hoverData: null,
  822.   hoverTimer: 0,
  823.   ignoreKeyHeld: false,
  824.  
  825.   onMouseOver(e) {
  826.     let node = e.target;
  827.     Events.ignoreKeyHeld = e.shiftKey;
  828.     if (!App.isEnabled ||
  829.         !App.canCloseVid() ||
  830.         e.shiftKey ||
  831.         ai.zoomed ||
  832.         node === ai.popup ||
  833.         node === doc.body ||
  834.         node === doc.documentElement ||
  835.         node === elSetup ||
  836.         ai.gallery && ai.rectHovered)
  837.       return;
  838.     if (node.shadowRoot)
  839.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  840.     // we don't want to process everything in the path of a quickly moving mouse cursor
  841.     Events.hoverData = {e, node, start: now()};
  842.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  843.   },
  844.  
  845.   onMouseOverThrottled(force) {
  846.     if (!Events.hoverData)
  847.       return;
  848.     const {start, e, node} = Events.hoverData;
  849.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  850.     const wait = force ? 0 : start + SETTLE_TIME - now();
  851.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  852.     if (Events.hoverTimer || !Util.isHovered(node))
  853.       return;
  854.     Events.hoverData = null;
  855.     if (!Ruler.rules)
  856.       Ruler.init();
  857.     const info = RuleMatcher.adaptiveFind(node);
  858.     if (info && info.url && info.node !== ai.node)
  859.       App.activate(info, e);
  860.   },
  861.  
  862.   onMouseOut(e) {
  863.     if (!e.relatedTarget && !cfg.keepOnBlur && !e.shiftKey && App.canCloseVid())
  864.       App.deactivate();
  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 (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('data-no-aa'))
  941.           p.setAttribute('data-no-aa', '');
  942.         else
  943.           p.removeAttribute('data-no-aa');
  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 'KeyT':
  976.         GM.openInTab(Util.tabFixUrl() || p.src);
  977.         App.deactivate();
  978.         break;
  979.       case 'Minus':
  980.       case 'NumpadSubtract':
  981.         if (ai.zoomed) {
  982.           Events.zoomInOut(-1);
  983.         } else {
  984.           App.toggleZoom();
  985.         }
  986.         break;
  987.       case 'Equal':
  988.       case 'NumpadAdd':
  989.         if (ai.zoomed) {
  990.           Events.zoomInOut(1);
  991.         } else {
  992.           App.toggleZoom();
  993.         }
  994.         break;
  995.       case 'Escape':
  996.         App.deactivate({wait: true});
  997.         break;
  998.       case '!Alt':
  999.         return;
  1000.       default:
  1001.         App.deactivate({wait: true});
  1002.         return;
  1003.     }
  1004.     dropEvent(e);
  1005.   },
  1006.  
  1007.   onKeyUp(e) {
  1008.     const p = ai.popup || false;
  1009.     if (e.key === 'Control') {
  1010.       if (!p) removeEventListener('keyup', Events.onKeyUp, true);
  1011.       setTimeout(() => (Events.ctrl = false));
  1012.     }
  1013.     if (p && e.key === 'Shift' && ai.shiftKeyTime) {
  1014.       Status.set('-shift');
  1015.       Bar.hide(true);
  1016.       if (p.controls)
  1017.         p.controls = false;
  1018.       // Chrome doesn't expose events for clicks on video controls so we'll guess
  1019.       if (ai.controlled || !isFF && now() - ai.shiftKeyTime > 500)
  1020.         ai.controlled = false;
  1021.       else if (p && (ai.zoomed || ai.rectHovered !== false))
  1022.         App.toggleZoom();
  1023.       else
  1024.         App.deactivate({wait: true});
  1025.       ai.shiftKeyTime = 0;
  1026.     } else if (
  1027.       describeKey(e) === 'Control' && !p && !Events.ignoreKeyHeld &&
  1028.       (cfg.start === 'ctrl' || cfg.start === 'context' || ai.rule.manual)
  1029.     ) {
  1030.       dropEvent(e);
  1031.       if (Events.hoverData) {
  1032.         Events.hoverData.e = e;
  1033.         Events.onMouseOverThrottled(true);
  1034.       }
  1035.       if (ai.node) {
  1036.         ai.force = true;
  1037.         App.start();
  1038.       }
  1039.     }
  1040.   },
  1041.  
  1042.   onContext(e) {
  1043.     if (Events.ignoreKeyHeld)
  1044.       return;
  1045.     const p = ai.popup;
  1046.     if (cfg.zoom === 'context' && p && App.toggleZoom()) {
  1047.       dropEvent(e);
  1048.     } else if (!p && (!cfg.videoCtrl || !isVideo(ai.node) || Events.ctrl) && (
  1049.       cfg.start === 'context' ||
  1050.       cfg.start === 'contextMK' ||
  1051.       cfg.start === 'contextM' && (e.button === 2) ||
  1052.       cfg.start === 'contextK' && (e.button !== 2) ||
  1053.       (cfg.start === 'auto' && ai.rule.manual)
  1054.     )) {
  1055.       // right-clicked on an image while the context menu is shown for something else
  1056.       if (!ai.node && !Events.hoverData)
  1057.         Events.onMouseOver(e);
  1058.       Events.onMouseOverThrottled(true);
  1059.       if (ai.node) {
  1060.         ai.force = true;
  1061.         App.start();
  1062.         dropEvent(e);
  1063.       }
  1064.     } else if (p) {
  1065.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  1066.     }
  1067.   },
  1068.  
  1069.   onVisibility(e) {
  1070.     Events.ctrl = false;
  1071.   },
  1072.  
  1073.   pierceShadow(node, x, y) {
  1074.     for (let root; (root = node.shadowRoot);) {
  1075.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  1076.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  1077.       const inner = root.elementFromPoint(x, y);
  1078.       if (!inner || inner === node)
  1079.         break;
  1080.       node = inner;
  1081.     }
  1082.     return node;
  1083.   },
  1084.  
  1085.   toggle(enable) {
  1086.     const onOff = enable ? 'addEventListener' : 'removeEventListener';
  1087.     const passive = {passive: true, capture: true};
  1088.     window[onOff]('mousemove', Events.onMouseMove, passive);
  1089.     window[onOff]('mouseout', Events.onMouseOut, passive);
  1090.     window[onOff]('mousedown', Events.onMouseDown, passive);
  1091.     window[onOff]('keyup', Events.onKeyUp, true);
  1092.     window[onOff](WHEEL_EVENT, Events.onMouseScroll, {passive: false});
  1093.   },
  1094.  
  1095.   trackMouse(e) {
  1096.     const cx = ai.cx = e.clientX;
  1097.     const cy = ai.cy = e.clientY;
  1098.     const r = ai.rect || (ai.rect = Calc.rect());
  1099.     ai.rectHovered =
  1100.       cx > r.left - 2 && cx < r.right + 2 &&
  1101.       cy > r.top - 2 && cy < r.bottom + 2;
  1102.   },
  1103.  
  1104.   zoomInOut(dir) {
  1105.     const i = Calc.scaleIndex(dir);
  1106.     const n = ai.scales.length;
  1107.     if (i >= 0 && i < n)
  1108.       ai.scale = ai.scales[i];
  1109.     const zo = cfg.zoomOut;
  1110.     if (i <= 0 && zo !== 'stay') {
  1111.       if (ai.scaleFit < ai.scale * .99) {
  1112.         ai.scales.unshift(ai.scale = ai.scaleFit);
  1113.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  1114.         App.deactivate({wait: true});
  1115.         return;
  1116.       }
  1117.       ai.zoomed = zo !== 'unzoom';
  1118.     } else {
  1119.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  1120.     }
  1121.     if (ai.zooming)
  1122.       ai.popup.classList.add(`${PREFIX}zooming`);
  1123.     Popup.move();
  1124.     Bar.updateDetails();
  1125.   },
  1126. };
  1127.  
  1128. const Gallery = {
  1129.  
  1130.   makeParser(g) {
  1131.     return isFunction(g) ? g : Gallery.defaultParser;
  1132.   },
  1133.  
  1134.   findIndex(gUrl) {
  1135.     const sel = gUrl.split('#')[1];
  1136.     if (!sel)
  1137.       return 0;
  1138.     if (/^\d+$/.test(sel))
  1139.       return parseInt(sel);
  1140.     for (let i = ai.gNum; i--;) {
  1141.       let {url} = ai.gItems[i];
  1142.       if (Array.isArray(url))
  1143.         url = url[0];
  1144.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  1145.         return i;
  1146.     }
  1147.     return 0;
  1148.   },
  1149.  
  1150.   next(dir) {
  1151.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  1152.     const item = ai.gItems[ai.gIndex];
  1153.     if (Array.isArray(item.url)) {
  1154.       ai.urls = item.url.slice(1);
  1155.       ai.url = item.url[0];
  1156.     } else {
  1157.       ai.urls = null;
  1158.       ai.url = item.url;
  1159.     }
  1160.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir || 1)].url)[0];
  1161.     App.startSingle();
  1162.     Bar.updateName();
  1163.   },
  1164.  
  1165.   nextIndex(dir) {
  1166.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  1167.   },
  1168.  
  1169.   defaultParser(text, doc, docUrl, m, rule) {
  1170.     const {g} = rule;
  1171.     const qEntry = g.entry;
  1172.     const qCaption = ensureArray(g.caption);
  1173.     const qImage = g.image || 'img';
  1174.     const qTitle = g.title;
  1175.     const fix =
  1176.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  1177.       (s => s.trim());
  1178.     const items = [...$$(qEntry || qImage, doc)]
  1179.       .map(processEntry)
  1180.       .filter(Boolean);
  1181.     items.title = processTitle();
  1182.     items.index =
  1183.       typeof g.index === 'string' &&
  1184.       Req.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  1185.       RX_HAS_CODE.test(g.index) &&
  1186.       Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  1187.       g.index;
  1188.     return items;
  1189.  
  1190.     function processEntry(entry) {
  1191.       const item = {};
  1192.       try {
  1193.         const img = qEntry ? $(qImage, entry) : entry;
  1194.         item.url = fix(Req.findImageUrl(img, docUrl), true);
  1195.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  1196.       } catch (e) {}
  1197.       return item.url && item;
  1198.     }
  1199.  
  1200.     function processCaption(selector) {
  1201.       const el = $(selector, this) ||
  1202.                  $orSelf(selector, this.previousElementSibling) ||
  1203.                  $orSelf(selector, this.nextElementSibling);
  1204.       return el && fix(el.textContent);
  1205.     }
  1206.  
  1207.     function processTitle() {
  1208.       const el = $(qTitle, doc);
  1209.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  1210.     }
  1211.  
  1212.     function $orSelf(selector, el) {
  1213.       if (el && !el.matches(qEntry))
  1214.         return el.matches(selector) ? el : $(selector, el);
  1215.     }
  1216.   },
  1217. };
  1218.  
  1219. const Menu = window === top && GM.registerMenuCommand && {
  1220.   curAltName: '',
  1221.   unreg: GM.unregisterMenuCommand,
  1222.   makeAltName: () => Menu.unreg
  1223.     ? `MPIV: auto-start is ${cfg.start === 'auto' ? 'ON' : 'OFF'}`
  1224.     : 'MPIV: toggle auto-start',
  1225.   register() {
  1226.     GM.registerMenuCommand('MPIV: configure', setup);
  1227.     Menu.registerAlt();
  1228.   },
  1229.   registerAlt() {
  1230.     if (cfg.startAltShown) {
  1231.       Menu.curAltName = Menu.makeAltName();
  1232.       GM.registerMenuCommand(Menu.curAltName, Menu.onAltToggled);
  1233.     }
  1234.   },
  1235.   reRegisterAlt() {
  1236.     const old = Menu.curAltName;
  1237.     if (old && Menu.unreg) Menu.unreg(old);
  1238.     if (!old || Menu.unreg) Menu.registerAlt();
  1239.   },
  1240.   onAltToggled() {
  1241.     const wasAuto = cfg.start === 'auto';
  1242.     if (wasAuto) {
  1243.       cfg.start = cfg.startAlt || (cfg.startAlt = 'context');
  1244.     } else {
  1245.       cfg.startAlt = cfg.start;
  1246.       cfg.start = 'auto';
  1247.     }
  1248.     Menu.reRegisterAlt();
  1249.   },
  1250. };
  1251.  
  1252. const Popup = {
  1253.  
  1254.   async create(src, pageUrl, error) {
  1255.     const inGallery = !cfg.uiFadeinGallery && ai.gItems && ai.popup && !ai.zooming &&
  1256.                       (ai.popup.dataset.galleryFlip = '') === '';
  1257.     Popup.destroy();
  1258.     ai.imageUrl = src;
  1259.     if (!src)
  1260.       return;
  1261.     const myAi = ai;
  1262.     let [xhr, isVideo] = await CspSniffer.check(src, error);
  1263.     if (ai !== myAi)
  1264.       return;
  1265.     if (!xhr && error) {
  1266.       App.handleError(error);
  1267.       return;
  1268.     }
  1269.     Object.assign(ai, {pageUrl, xhr});
  1270.     if (xhr)
  1271.       [src, isVideo] = await Req.getImage(src, pageUrl, xhr).catch(App.handleError) || [];
  1272.     if (ai !== myAi || !src)
  1273.       return;
  1274.     const p = ai.popup = isVideo ? await PopupVideo.create() : $new('img');
  1275.     p.id = `${PREFIX}popup`;
  1276.     p.src = src;
  1277.     p.addEventListener('error', App.handleError);
  1278.     if (ai.zooming)
  1279.       p.addEventListener('transitionend', Popup.onZoom);
  1280.     if (inGallery) {
  1281.       p.dataset.galleryFlip = '';
  1282.       p.setAttribute('loaded', '');
  1283.     }
  1284.     doc.body.insertBefore(p, ai.bar || undefined);
  1285.     await 0;
  1286.     if (App.checkProgress({start: true}) === false)
  1287.       return;
  1288.     if (p.complete)
  1289.       Popup.onLoad.call(ai.popup);
  1290.     else if (!isVideo)
  1291.       p.addEventListener('load', Popup.onLoad, {once: true});
  1292.   },
  1293.  
  1294.   destroy() {
  1295.     const p = ai.popup;
  1296.     if (!p) return;
  1297.     p.removeEventListener('load', Popup.onLoad);
  1298.     p.removeEventListener('error', App.handleError);
  1299.     if (isFunction(p.pause))
  1300.       p.pause();
  1301.     if (ai.blobUrl)
  1302.       setTimeout(URL.revokeObjectURL, SETTLE_TIME, ai.blobUrl);
  1303.     p.remove();
  1304.     ai.zoomed = ai.popup = ai.popupLoaded = ai.blobUrl = null;
  1305.   },
  1306.  
  1307.   move() {
  1308.     let x, y;
  1309.     const {cx, cy, extras, view} = ai;
  1310.     const vw = view.w - extras.outw;
  1311.     const vh = view.h - extras.outh;
  1312.     const w0 = ai.scale * ai.nwidth + extras.inw;
  1313.     const h0 = ai.scale * ai.nheight + extras.inh;
  1314.     const isSwapped = ai.rotate % 180;
  1315.     const w = isSwapped ? h0 : w0;
  1316.     const h = isSwapped ? w0 : h0;
  1317.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  1318.       const r = ai.rect;
  1319.       const rx = (r.left + r.right) / 2;
  1320.       const ry = (r.top + r.bottom) / 2;
  1321.       if (vw - r.right - 40 > w || w < r.left - 40) {
  1322.         if (h < vh - 60)
  1323.           y = clamp(ry - h / 2, 30, vh - h - 30);
  1324.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  1325.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  1326.         if (w < vw - 60)
  1327.           x = clamp(rx - w / 2, 30, vw - w - 30);
  1328.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  1329.       }
  1330.     }
  1331.     if (x == null) {
  1332.       x = vw > w
  1333.         ? (vw - w) / 2 + view.x
  1334.         : (vw - w) * clamp(5 / 3 * ((cx - view.x) / vw - .2), 0, 1);
  1335.     }
  1336.     if (y == null) {
  1337.       y = vh > h
  1338.         ? (vh - h) / 2 + view.y
  1339.         : (vh - h) * clamp(5 / 3 * ((cy - view.y) / vh - .2), 0, 1);
  1340.     }
  1341.     const diff = isSwapped ? (w0 - h0) / 2 : 0;
  1342.     x += extras.o - diff;
  1343.     y += extras.o + diff;
  1344.     $css(ai.popup, {
  1345.       transform: `translate(${Math.round(x)}px, ${Math.round(y)}px) ` +
  1346.                  `rotate(${ai.rotate || 0}deg) ` +
  1347.                  `scale(${ai.flipX ? -1 : 1},${ai.flipY ? -1 : 1})`,
  1348.       width: `${Math.round(w0)}px`,
  1349.       height: `${Math.round(h0)}px`,
  1350.     });
  1351.   },
  1352.  
  1353.   onLoad() {
  1354.     if (this === ai.popup) {
  1355.       this.setAttribute('loaded', '');
  1356.       ai.popupLoaded = true;
  1357.       Status.set('-loading');
  1358.       if (ai.preloadUrl) {
  1359.         $new('img', {src: ai.preloadUrl});
  1360.         ai.preloadUrl = null;
  1361.       }
  1362.     }
  1363.   },
  1364.  
  1365.   onZoom() {
  1366.     this.classList.remove(`${PREFIX}zooming`);
  1367.   },
  1368. };
  1369.  
  1370. const PopupVideo = {
  1371.   async create() {
  1372.     ai.bufBar = false;
  1373.     ai.bufStart = now();
  1374.     return $new('video', {
  1375.       autoplay: true,
  1376.       controls: true,
  1377.       muted: cfg.mute || new AudioContext().state === 'suspended',
  1378.       loop: true,
  1379.       volume: clamp(+await GM.getValue('volume') || .5, 0, 1),
  1380.       onprogress: PopupVideo.progress,
  1381.       oncanplaythrough: PopupVideo.progressDone,
  1382.       onvolumechange: PopupVideo.rememberVolume,
  1383.     });
  1384.   },
  1385.  
  1386.   progress() {
  1387.     const {duration} = this;
  1388.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1389.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1390.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1391.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1392.     }
  1393.   },
  1394.  
  1395.   progressDone() {
  1396.     this.onprogress = this.oncanplaythrough = null;
  1397.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1398.       Bar.set(false);
  1399.     Popup.onLoad.call(this);
  1400.   },
  1401.  
  1402.   rememberVolume() {
  1403.     GM.setValue('volume', this.volume);
  1404.   },
  1405. };
  1406.  
  1407. const Ruler = {
  1408.   /*
  1409.    'u' works only with URLs so it's ignored if 'html' is true
  1410.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1411.    |foo = url or text must start with foo
  1412.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1413.    when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1414.    'r' is checked only if 'u' matches first
  1415.    */
  1416.   init() {
  1417.     const errors = new Map();
  1418.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1419.     const hasGMAE = typeof GM_addElement === 'function';
  1420.     const canEval = nonce || hasGMAE;
  1421.     const evalId = canEval && `${GM_info.script.name}${Math.random()}`;
  1422.     const evalRules = [];
  1423.     const evalCode = [`window[${JSON.stringify(evalId)}]=[`];
  1424.     for (const [rule, err] of errors.entries()) {
  1425.       if (!RX_EVAL_BLOCKED.test(err)) {
  1426.         App.handleError('Invalid custom host rule:', rule);
  1427.         continue;
  1428.       }
  1429.       if (canEval) {
  1430.         evalCode.push(evalRules.length ? ',' : '',
  1431.           '[', customRules.indexOf(rule), ',{',
  1432.           ...Object.keys(FN_ARGS)
  1433.             .map(k => RX_HAS_CODE.test(rule[k]) && `${k}(${FN_ARGS[k]}){${rule[k]}},`)
  1434.             .filter(Boolean),
  1435.           '}]');
  1436.       }
  1437.       evalRules.push(rule);
  1438.     }
  1439.     if (evalRules.length) {
  1440.       let result, wnd;
  1441.       if (canEval) {
  1442.         const GMAE = hasGMAE
  1443.           ? GM_addElement // eslint-disable-line no-undef
  1444.           : (tag, {textContent}) => document.head.appendChild(
  1445.             Object.assign(document.createElement(tag), {
  1446.               textContent: TRUSTED.createScript(textContent),
  1447.               nonce,
  1448.             }));
  1449.         evalCode.push(']; document.currentScript.remove();');
  1450.         GMAE('script', {textContent: evalCode.join('')});
  1451.         result = (wnd = unsafeWindow)[evalId] ||
  1452.                  isFF && (wnd = wnd.wrappedJSObject)[evalId];
  1453.       }
  1454.       if (result) {
  1455.         for (const [index, fns] of result) {
  1456.           Object.assign(customRules[index], fns);
  1457.         }
  1458.         delete wnd[evalId];
  1459.       } else {
  1460.         console.warn('Site forbids compiling JS code in these custom rules', evalRules);
  1461.       }
  1462.     }
  1463.  
  1464.     // rules that disable previewing
  1465.     /** @type mpiv.HostRule[] */
  1466.     const disablers = [
  1467.       dotDomain.endsWith('.stackoverflow.com') && {
  1468.         e: '.post-tag, .post-tag img',
  1469.         s: '',
  1470.       },
  1471.     ];
  1472.  
  1473.     // optimization: a rule is created only when on domain
  1474.     /** @type mpiv.HostRule[] */
  1475.     const perDomain = [
  1476.       hostname.includes('startpage') && {
  1477.         r: /\boiu=(.+)/,
  1478.         s: '$1',
  1479.         follow: true,
  1480.       },
  1481.       dotDomain.endsWith('.4chan.org') && {
  1482.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1483.         q: '.op .fileText a',
  1484.         css: '#post-preview{display:none}',
  1485.       },
  1486.       hostname.includes('amazon.') && {
  1487.         r: /.+?images\/I\/.+?\./,
  1488.         s: m => {
  1489.           const uh = doc.getElementById('universal-hover');
  1490.           return uh ? '' : m[0] + 'jpg';
  1491.         },
  1492.         css: '#zoomWindow{display:none!important;}',
  1493.       },
  1494.       dotDomain.endsWith('.bing.com') && {
  1495.         e: 'a[m*="murl"]',
  1496.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1497.         s: '$1',
  1498.         html: true,
  1499.       },
  1500.       ...dotDomain.endsWith('.deviantart.com') && [{
  1501.         e: '[data-super-full-img] *, img[src*="/th/"]',
  1502.         s: (m, node) =>
  1503.           $propUp(node, 'data-super-full-img') ||
  1504.           (node = node.dataset.embedId && node.nextElementSibling) &&
  1505.           node.dataset.embedId && node.src,
  1506.       }, {
  1507.         e: '.dev-view-deviation img',
  1508.         s: () => [
  1509.           $('.dev-page-download').href,
  1510.           $('.dev-content-full').src,
  1511.         ].filter(Boolean),
  1512.       }, {
  1513.         e: 'a[data-hook=deviation_link]',
  1514.         q: 'link[as=image]',
  1515.       }] || [],
  1516.       dotDomain.endsWith('.discord.com') && {
  1517.         u: '||discordapp.net/external/',
  1518.         r: /\/https?\/(.+)/,
  1519.         s: '//$1',
  1520.         follow: true,
  1521.       },
  1522.       dotDomain.endsWith('.dropbox.com') && {
  1523.         r: /(.+?&size_mode)=\d+(.*)/,
  1524.         s: '$1=5$2',
  1525.       },
  1526.       dotDomain.endsWith('.facebook.com') && {
  1527.         e: 'a[href*="ref=hovercard"]',
  1528.         s: (m, node) =>
  1529.           'https://www.facebook.com/photo.php?fbid=' +
  1530.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1531.         follow: true,
  1532.       },
  1533.       dotDomain.endsWith('.facebook.com') && {
  1534.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1535.         s: (m, node) =>
  1536.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1537.             decodeURIComponent(m[4]),
  1538.         html: true,
  1539.         follow: true,
  1540.       },
  1541.       dotDomain.endsWith('.flickr.com') &&
  1542.       pick(unsafeWindow, 'YUI_config.flickr.api.site_key') && {
  1543.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1544.         s: m => `https://www.flickr.com/services/rest/?${
  1545.           new URLSearchParams({
  1546.             photo_id: m[1],
  1547.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1548.             method: 'flickr.photos.getSizes',
  1549.             format: 'json',
  1550.             nojsoncallback: 1,
  1551.           }).toString()}`,
  1552.         q: text => JSON.parse(text).sizes.size.pop().source,
  1553.         anonymous: true,
  1554.       },
  1555.       dotDomain.endsWith('.github.com') && {
  1556.         r: new RegExp([
  1557.           /(avatars.+?&s=)\d+/,
  1558.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1559.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1560.         ].map(rx => rx.source).join('|')),
  1561.         s: m => `https://${
  1562.           m[1] ? `${m[1]}460` :
  1563.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1564.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1565.         }`,
  1566.       },
  1567.       isGoogleImages && {
  1568.         e: 'a[href*="imgres?imgurl="] img',
  1569.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1570.         follow: true,
  1571.       },
  1572.       isGoogleImages && {
  1573.         e: '[data-tbnid] a:not([href])',
  1574.         s: (m, a) => {
  1575.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1576.           new MutationObserver((_, mo) => {
  1577.             mo.disconnect();
  1578.             App.isEnabled = true;
  1579.             a.alt = a2.innerText;
  1580.             const {left, top} = a.getBoundingClientRect();
  1581.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1582.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1583.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1584.           a2.dispatchEvent(new MouseEvent('mouseup', {bubbles: true}));
  1585.         },
  1586.       },
  1587.       dotDomain.endsWith('.instagram.com') && {
  1588.         e: 'a[href*="/p/"],' +
  1589.            'article [role="button"][tabindex="0"],' +
  1590.            'article [role="button"][tabindex="0"] div',
  1591.         s: (m, node, rule) => {
  1592.           let data, a, n, img, src;
  1593.           if (location.pathname.startsWith('/p/') || location.pathname.startsWith('/tv/')) {
  1594.             img = $('img[srcset], video', node.parentNode);
  1595.             if (img && (isVideo(img) || parseFloat(img.sizes) > 900))
  1596.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1597.           }
  1598.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1599.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1600.           }
  1601.           const numPics = a && pick(data, 'edge_sidecar_to_children.edges.length') ||
  1602.                           a && pick(data, 'carousel_media_count');
  1603.           Ruler.toggle(rule, 'q', data && data.is_video && !data.video_url);
  1604.           Ruler.toggle(rule, 'g', a && (numPics > 1 || /<\w+[^>]+carousel/i.test(a.innerHTML)));
  1605.           rule.follow = !data && !rule.g;
  1606.           rule._data = data;
  1607.           rule._img = img;
  1608.           return (
  1609.             !a && !src ? false :
  1610.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1611.                 data.video_url || data.display_url);
  1612.         },
  1613.         c: (html, doc, node, rule) =>
  1614.           rule._getCaption(rule._data) || (rule._img || 0).alt || '',
  1615.         follow: true,
  1616.         _q: 'meta[property="og:video"]',
  1617.         _g(text, doc, url, m, rule) {
  1618.           const json = tryJSON(text);
  1619.           const media =
  1620.             pick(json, 'graphql.shortcode_media') ||
  1621.             pick(json, 'items[0]');
  1622.           const items =
  1623.             pick(media, 'edge_sidecar_to_children.edges', res => res.map(e => ({
  1624.               url: e.node.video_url || e.node.display_url,
  1625.             }))) ||
  1626.             pick(media, 'carousel_media', res => res.map(e => ({
  1627.               url: pick(e, 'video_versions[0].url') || pick(e, 'image_versions2.candidates[0].url'),
  1628.             })));
  1629.           items.title = rule._getCaption(media) || '';
  1630.           return items;
  1631.         },
  1632.         _getCaption: data => pick(data, 'caption.text') ||
  1633.                              pick(data, 'edge_media_to_caption.edges[0].node.text'),
  1634.       },
  1635.       ...dotDomain.endsWith('.reddit.com') && [{
  1636.         u: '||i.reddituploads.com/',
  1637.       }, {
  1638.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1639.         s: (m, node) => $propUp(node, 'data-url'),
  1640.       }, {
  1641.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1642.         s: 'https://i$1',
  1643.       }] || [],
  1644.       dotDomain.endsWith('.tumblr.com') && {
  1645.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1646.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1647.         follow: true,
  1648.       },
  1649.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1650.         e: 'a.media-item, a.js-media-image-link',
  1651.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1652.         follow: true,
  1653.       },
  1654.       dotDomain.endsWith('.twitter.com') && {
  1655.         e: '.grid-tweet > .media-overlay',
  1656.         s: (m, node) => node.previousElementSibling.src,
  1657.         follow: true,
  1658.       },
  1659.       dotDomain.match(/\.(dumpoir|greatfon|picuki)\.com$/) && {
  1660.         tabfix: true,
  1661.       },
  1662.     ];
  1663.  
  1664.     /** @type mpiv.HostRule[] */
  1665.     const main = [
  1666.       {
  1667.         r: /[/?=](https?%3A%2F%2F[^&]+)/i,
  1668.         s: '$1',
  1669.         follow: true,
  1670.         onerror: 'skip',
  1671.       },
  1672.       {
  1673.         u: [
  1674.           '||500px.com/photo/',
  1675.           '||cl.ly/',
  1676.           '||cweb-pix.com/',
  1677.           '//ibb.co/',
  1678.           '||imgcredit.xyz/image/',
  1679.         ],
  1680.         r: /\.\w+\/.+/,
  1681.         q: 'meta[property="og:image"]',
  1682.       },
  1683.       {
  1684.         u: 'attachment.php',
  1685.         r: /attachment\.php.+attachmentid/,
  1686.       },
  1687.       {
  1688.         u: '||abload.de/image',
  1689.         q: '#image',
  1690.       },
  1691.       {
  1692.         u: '||deviantart.com/art/',
  1693.         s: (m, node) =>
  1694.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1695.             '' :
  1696.             m.input,
  1697.         q: [
  1698.           '#download-button[href*=".jpg"]',
  1699.           '#download-button[href*=".jpeg"]',
  1700.           '#download-button[href*=".gif"]',
  1701.           '#download-button[href*=".png"]',
  1702.           '#gmi-ResViewSizer_fullimg',
  1703.           'img.dev-content-full',
  1704.         ],
  1705.       },
  1706.       {
  1707.         u: '||dropbox.com/s',
  1708.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1709.         q: (text, doc) =>
  1710.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1711.       },
  1712.       {
  1713.         r: /[./]ebay\.[^/]+\/itm\//,
  1714.         q: text =>
  1715.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1716.             .replace(/~~60_\d+/, '~~60_57'),
  1717.       },
  1718.       {
  1719.         u: '||i.ebayimg.com/',
  1720.         s: (m, node) =>
  1721.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1722.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1723.       },
  1724.       {
  1725.         u: '||fastpic.',
  1726.         e: 'a[href*="fastpic"]',
  1727.         s: m => m[0].replace(/\/i(\d+)\.(\w+\.\w+\/)\w+/, '/$2$1')
  1728.           .replace(/^\w+:\/\/[^/]+((?:\/\d+){3})\/\w+(\/\w+\.\w+)/, 'https://fastpic.org/view$1$2.html'),
  1729.         q: 'img[src*="/big/"]',
  1730.       },
  1731.       {
  1732.         u: '||facebook.com/',
  1733.         r: /photo\.php|[^/]+\/photos\//,
  1734.         s: (m, node) =>
  1735.           node.id === 'fbPhotoImage' ? false :
  1736.             /gradient\.png$/.test(m.input) ? '' :
  1737.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1738.         q: [
  1739.           'div + span > a:first-child:not([href*="tag_faces"])',
  1740.           'div + span > a[href*="tag_faces"] ~ a',
  1741.         ],
  1742.         rect: '#fbProfileCover',
  1743.       },
  1744.       {
  1745.         u: '||fbcdn.',
  1746.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1747.         s: m =>
  1748.           dotDomain.endsWith('.facebook.com') &&
  1749.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1750.           false,
  1751.         manual: true,
  1752.       },
  1753.       {
  1754.         u: ['||fbcdn-', 'fbcdn.net/'],
  1755.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1756.         s: (m, node) => {
  1757.           if (node.id === 'fbPhotoImage') {
  1758.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1759.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1760.           }
  1761.           if (m[4])
  1762.             return false;
  1763.           const pn = node.parentNode;
  1764.           if (pn.outerHTML.includes('/hovercard/'))
  1765.             return '';
  1766.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1767.             return false;
  1768.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1769.         },
  1770.         rect: '.photoWrap',
  1771.       },
  1772.       {
  1773.         u: '||flickr.com/photos/',
  1774.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1775.         s: m =>
  1776.           m.input.indexOf('/sizes/') < 0 ?
  1777.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1778.             false,
  1779.         q: (text, doc) => {
  1780.           const links = $$('.sizes-list a', doc);
  1781.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1782.         },
  1783.         follow: true,
  1784.       },
  1785.       {
  1786.         u: '||flickr.com/photos/',
  1787.         r: /\/sizes\//,
  1788.         q: '#allsizes-photo > img',
  1789.       },
  1790.       {
  1791.         u: '||gfycat.com/',
  1792.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1793.         s: 'https://$1$3',
  1794.         q: 'meta[content$=".webm"], #webmsource, source[src$=".webm"], .actual-gif-image',
  1795.       },
  1796.       {
  1797.         u: [
  1798.           '||googleusercontent.com/proxy',
  1799.           '||googleusercontent.com/gadgets/proxy',
  1800.         ],
  1801.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1802.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1803.       },
  1804.       {
  1805.         u: [
  1806.           '||googleusercontent.com/',
  1807.           '||ggpht.com/',
  1808.         ],
  1809.         s: m => m.input.includes('webcache.') ? '' :
  1810.           m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1811.             .replace(/([&?]sz)?=[-\w]+([&#].*)?/, ''),
  1812.       },
  1813.       {
  1814.         u: '||gravatar.com/',
  1815.         r: /([a-z0-9]{32})/,
  1816.         s: 'https://gravatar.com/avatar/$1?s=200',
  1817.       },
  1818.       {
  1819.         u: '//gyazo.com/',
  1820.         r: /\bgyazo\.com\/\w{32,}(\.\w+)?/,
  1821.         s: (m, _, rule) => Ruler.toggle(rule, 'q', !m[1]) ? m.input : `https://i.${m[0]}`,
  1822.         _q: 'link[rel="image_src"]',
  1823.       },
  1824.       {
  1825.         u: '||hostingkartinok.com/show-image.php',
  1826.         q: '.image img',
  1827.       },
  1828.       {
  1829.         u: [
  1830.           '||imagecurl.com/images/',
  1831.           '||imagecurl.com/viewer.php',
  1832.         ],
  1833.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1834.         s: 'https://imagecurl.com/images/$1$2$3',
  1835.       },
  1836.       {
  1837.         u: '||imagebam.com/image/',
  1838.         q: 'meta[property="og:image"]',
  1839.         tabfix: true,
  1840.         xhr: hostname.includes('planetsuzy'),
  1841.       },
  1842.       {
  1843.         u: '||imageban.ru/thumbs',
  1844.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1845.         s: '$1out$2/$3/$4',
  1846.       },
  1847.       {
  1848.         u: [
  1849.           '||imageban.ru/show',
  1850.           '||imageban.net/show',
  1851.           '||ibn.im/',
  1852.         ],
  1853.         q: '#img_main',
  1854.       },
  1855.       {
  1856.         u: '||imageshack.us/img',
  1857.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1858.         s: 'https://$2/download/$1/$3$4',
  1859.       },
  1860.       {
  1861.         u: '||imageshack.us/i/',
  1862.         q: '#share-dl',
  1863.       },
  1864.       {
  1865.         u: '||imageteam.org/img',
  1866.         q: 'img[alt="image"]',
  1867.       },
  1868.       {
  1869.         u: [
  1870.           '||imagetwist.com/',
  1871.           '||imageshimage.com/',
  1872.         ],
  1873.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1874.         q: 'img.pic',
  1875.         xhr: true,
  1876.       },
  1877.       {
  1878.         u: '||imageupper.com/i/',
  1879.         q: '#img',
  1880.         xhr: true,
  1881.       },
  1882.       {
  1883.         u: '||imagevenue.com/',
  1884.         q: 'a[data-toggle="full"] img',
  1885.       },
  1886.       {
  1887.         u: '||imagezilla.net/show/',
  1888.         q: '#photo',
  1889.         xhr: true,
  1890.       },
  1891.       {
  1892.         u: [
  1893.           '||images-na.ssl-images-amazon.com/images/',
  1894.           '||media-imdb.com/images/',
  1895.         ],
  1896.         r: /images\/.+?\.jpg/,
  1897.         s: '/V1\\.?_.+?\\.//g',
  1898.       },
  1899.       {
  1900.         u: '||imgbox.com/',
  1901.         r: /\.com\/([a-z0-9]+)$/i,
  1902.         q: '#img',
  1903.         xhr: hostname !== 'imgbox.com',
  1904.       },
  1905.       {
  1906.         u: '||imgclick.net/',
  1907.         r: /\.net\/(\w+)/,
  1908.         q: 'img.pic',
  1909.         xhr: true,
  1910.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1911.       },
  1912.       {
  1913.         u: '.imgcredit.xyz/',
  1914.         r: /^https?(:.*\.xyz\/\d[\w/]+)\.md(.+)/,
  1915.         s: ['https$1$2', 'https$1.png'],
  1916.       },
  1917.       {
  1918.         u: [
  1919.           '||imgflip.com/i/',
  1920.           '||imgflip.com/gif/',
  1921.         ],
  1922.         r: /\/(i|gif)\/([^/?#]+)/,
  1923.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1924.       },
  1925.       {
  1926.         u: [
  1927.           '||imgur.com/a/',
  1928.           '||imgur.com/gallery/',
  1929.         ],
  1930.         s: 'gallery', // suppressing an unused network request for remote `document`
  1931.         g: async (text, doc, url, m, rule, node, cb) => {
  1932.           let u = `https://imgur.com/ajaxalbums/getimages/${ai.url.split(/[/?#]/)[4]}/hit.json?all=true`;
  1933.           let info = tryJSON((await Req.gmXhr(u)).responseText) || 0;
  1934.           let images = (info.data || 0).images || [];
  1935.           if (!images[0]) {
  1936.             info = (await Req.gmXhr(ai.url)).responseText.match(/postDataJSON=(".*?")<|$/)[1];
  1937.             info = tryJSON(tryJSON(info)) || 0;
  1938.             images = info.media;
  1939.           }
  1940.           const items = [];
  1941.           for (const img of images) {
  1942.             const meta = img.metadata || img;
  1943.             items.push({
  1944.               url: img.url ||
  1945.                    (u = `https://i.imgur.com/${img.hash}`) && (
  1946.                      img.ext === '.gif' && img.animated !== false ?
  1947.                        [`${u}.webm`, `${u}.mp4`, u] :
  1948.                        u + img.ext
  1949.                    ),
  1950.               desc: [meta.title, meta.description].filter(Boolean).join(' - '),
  1951.             });
  1952.           }
  1953.           if (items[0] && info.title && !`${items[0].desc || ''}`.includes(info.title))
  1954.             items.title = info.title;
  1955.           cb(items);
  1956.         },
  1957.         css: '.post > .hover { display:none!important; }',
  1958.       },
  1959.       {
  1960.         u: '||imgur.com/',
  1961.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1962.         s: 'gallery',
  1963.         g: (text, doc, url, m) =>
  1964.           m[2].split(',').map(id => ({
  1965.             url: `https://i.${m[1]}${id}.jpg`,
  1966.           })),
  1967.       },
  1968.       {
  1969.         u: '||imgur.com/',
  1970.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.(mp4|[a-z]+))/i,
  1971.         s: (m, node) => {
  1972.           if (/memegen|random|register|search|signin/.test(m.input))
  1973.             return '';
  1974.           const a = node.closest('a');
  1975.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1976.             return false;
  1977.           // postfixes: huge, large, medium, thumbnail, big square, small square
  1978.           const id = m[3].replace(/(.{7})[hlmtbs]$/, '$1');
  1979.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1980.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1981.           return ext === 'webm' ?
  1982.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1983.             u + ext;
  1984.         },
  1985.       },
  1986.       {
  1987.         u: [
  1988.           '||instagr.am/p/',
  1989.           '||instagram.com/p/',
  1990.           '||instagram.com/tv/',
  1991.         ],
  1992.         s: m => m.input.substr(0, m.input.lastIndexOf('/')).replace('/liked_by', '') + '/?__a=1',
  1993.         q: m => (m = tryJSON(m)) && (
  1994.           m = pick(m, 'graphql.shortcode_media') || pick(m, 'items[0]') || 0
  1995.         ) && (
  1996.           m.video_url ||
  1997.           m.display_url ||
  1998.           pick(m, 'video_versions[0].url') ||
  1999.           pick(m, 'carousel_media[0].image_versions2.candidates[0].url') ||
  2000.           pick(m, 'image_versions2.candidates[0].url')
  2001.         ),
  2002.         rect: 'div.PhotoGridMediaItem',
  2003.         c: m => (m = tryJSON(m)) && (
  2004.           pick(m, 'items[0].caption.text') ||
  2005.           pick(m, 'graphql.shortcode_media.edge_media_to_caption.edges[0].node.text') ||
  2006.           ''
  2007.         ),
  2008.       },
  2009.       {
  2010.         u: [
  2011.           '||livememe.com/',
  2012.           '||lvme.me/',
  2013.         ],
  2014.         r: /\.\w+\/([^.]+)$/,
  2015.         s: 'http://i.lvme.me/$1.jpg',
  2016.       },
  2017.       {
  2018.         u: '||lostpic.net/image',
  2019.         q: '.image-viewer-image img',
  2020.       },
  2021.       {
  2022.         u: '||makeameme.org/meme/',
  2023.         r: /\/meme\/([^/?#]+)/,
  2024.         s: 'https://media.makeameme.org/created/$1.jpg',
  2025.       },
  2026.       {
  2027.         u: '||photobucket.com/',
  2028.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  2029.         s: 'https://i$1$3',
  2030.         xhr: !dotDomain.endsWith('.photobucket.com'),
  2031.       },
  2032.       {
  2033.         u: '||piccy.info/view3/',
  2034.         r: /(.+?\/view3)\/(.*)\//,
  2035.         s: '$1/$2/orig/',
  2036.         q: '#mainim',
  2037.       },
  2038.       {
  2039.         u: '||pimpandhost.com/image/',
  2040.         r: /(.+?\/image\/[0-9]+)/,
  2041.         s: '$1?size=original',
  2042.         q: 'img.original',
  2043.       },
  2044.       {
  2045.         u: [
  2046.           '||pixroute.com/',
  2047.           '||imgspice.com/',
  2048.         ],
  2049.         r: /\.html$/,
  2050.         q: 'img[id]',
  2051.         xhr: true,
  2052.       },
  2053.       {
  2054.         u: '||postima',
  2055.         r: /postima?ge?\.org\/image\/\w+/,
  2056.         q: [
  2057.           'a[href*="dl="]',
  2058.           '#main-image',
  2059.         ],
  2060.       },
  2061.       {
  2062.         u: [
  2063.           '||prntscr.com/',
  2064.           '||prnt.sc/',
  2065.         ],
  2066.         r: /\.\w+\/.+/,
  2067.         q: 'meta[property="og:image"]',
  2068.         xhr: true,
  2069.       },
  2070.       {
  2071.         u: '||radikal.ru/',
  2072.         r: /\.ru\/(fp|.+?\.html)|^(.+?)t\.jpg/,
  2073.         s: (m, node, rule) =>
  2074.           m[2] && /radikal\.ru[\w%/]+?(\.\w+)/.test($propUp(node, 'href')) ? m[2] + RegExp.$1 :
  2075.             Ruler.toggle(rule, 'q', m[1]) ? m.input : [m[2] + '.jpg', m[2] + '.png'],
  2076.         _q: text => text.match(/https?:\/\/\w+\.radikal\.ru[\w/]+\.(jpg|gif|png)/i)[0],
  2077.       },
  2078.       {
  2079.         u: '||tumblr.com',
  2080.         r: /_500\.jpg/,
  2081.         s: ['/_500/_1280/', ''],
  2082.       },
  2083.       {
  2084.         u: '||twimg.com/media/',
  2085.         r: /.+?format=(jpe?g|png|gif)/i,
  2086.         s: '$0&name=orig',
  2087.       },
  2088.       {
  2089.         u: '||twimg.com/media/',
  2090.         r: /.+?\.(jpe?g|png|gif)/i,
  2091.         s: '$0:orig',
  2092.       },
  2093.       {
  2094.         u: '||twimg.com/1/proxy',
  2095.         r: /t=([^&_]+)/i,
  2096.         s: m => atob(m[1]).match(/http.+/),
  2097.       },
  2098.       {
  2099.         u: '||twimg.com/',
  2100.         r: /\/profile_images/i,
  2101.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  2102.       },
  2103.       {
  2104.         u: '||pic.twitter.com/',
  2105.         r: /\.com\/[a-z0-9]+/i,
  2106.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  2107.         follow: true,
  2108.       },
  2109.       {
  2110.         u: '||twitpic.com/',
  2111.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  2112.         s: 'https://twitpic.com/show/large/$2',
  2113.       },
  2114.       {
  2115.         u: '||wiki',
  2116.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  2117.         s: '/\\/thumb(?=\\/)|' +
  2118.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  2119.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  2120.         xhr: !hostname.includes('wiki'),
  2121.       },
  2122.       {
  2123.         u: '||ytimg.com/vi/',
  2124.         r: /(.+?\/vi\/[^/]+)/,
  2125.         s: '$1/0.jpg',
  2126.         rect: '.video-list-item',
  2127.       },
  2128.       {
  2129.         u: '/viewer.php?file=',
  2130.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  2131.         s: '$1/images/$2',
  2132.         xhr: true,
  2133.       },
  2134.       {
  2135.         u: '/thumb_',
  2136.         r: /\/albums.+\/thumb_[^/]/,
  2137.         s: '/thumb_//',
  2138.       },
  2139.       {
  2140.         u: [
  2141.           '.th.jp',
  2142.           '.th.gif',
  2143.           '.th.png',
  2144.         ],
  2145.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  2146.         s: '$1$2',
  2147.         follow: true,
  2148.       },
  2149.       {
  2150.         r: RX_MEDIA_URL,
  2151.       },
  2152.     ];
  2153.  
  2154.     /** @type mpiv.HostRule[] */
  2155.     (Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean))
  2156.       .forEach(rule => {
  2157.         if (Array.isArray(rule.e))
  2158.           rule.e = rule.e.join(',');
  2159.       });
  2160.   },
  2161.  
  2162.   format(rule, {expand} = {}) {
  2163.     const s = Util.stringify(rule, null, ' ');
  2164.     return expand ?
  2165.       /* {"a": ...,
  2166.        "b": ...,
  2167.        "c": ...
  2168.        } */
  2169.       s.replace(/^{\s+/g, '{') :
  2170.       /* {"a": ..., "b": ..., "c": ...} */
  2171.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  2172.   },
  2173.  
  2174.   fromElement(el) {
  2175.     const text = el.textContent.trim();
  2176.     if (text.startsWith('{') &&
  2177.         text.endsWith('}') &&
  2178.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text)) {
  2179.       const rule = tryJSON(text);
  2180.       return rule && Object.keys(rule).some(k => /^[degqrsu]$/.test(k)) && rule;
  2181.     }
  2182.   },
  2183.  
  2184.   isValidE2: ([k, v]) => k.trim() && typeof v === 'string' && v.trim(),
  2185.  
  2186.   /** @returns mpiv.HostRule | Error | false | undefined */
  2187.   parse(rule) {
  2188.     const isBatchOp = this instanceof Map;
  2189.     try {
  2190.       if (typeof rule === 'string')
  2191.         rule = JSON.parse(rule);
  2192.       if ('d' in rule && typeof rule.d !== 'string')
  2193.         rule.d = undefined;
  2194.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  2195.         return false;
  2196.       if ('e' in rule) {
  2197.         let {e} = rule;
  2198.         if (typeof e === 'string') {
  2199.           e = e.trim();
  2200.         } else if (
  2201.           Array.isArray(e) && !e.every((s, i) => typeof s === 'string' && (e[i] = s.trim())) ||
  2202.           e && !Object.entries(e).filter(Ruler.isValidE2).length
  2203.         ) {
  2204.           throw new Error('Invalid syntax for "e". Examples: ' +
  2205.                           '"e": ".image" or ' +
  2206.                           '"e": [".image1", ".image2"] or ' +
  2207.                           '"e": {".parent": ".image"} or ' +
  2208.                           '"e": {".parent1": ".image1", ".parent2": ".image2"}');
  2209.         }
  2210.         if (isBatchOp) rule.e = e || undefined;
  2211.       }
  2212.       let compileTo = isBatchOp ? rule : {};
  2213.       if (rule.r)
  2214.         compileTo.r = new RegExp(rule.r, 'i');
  2215.       if (App.NOP)
  2216.         compileTo = {};
  2217.       for (const key of Object.keys(FN_ARGS)) {
  2218.         if (RX_HAS_CODE.test(rule[key])) {
  2219.           const fn = Util.newFunction(...FN_ARGS[key], rule[key]);
  2220.           if (fn !== App.NOP || !isBatchOp) {
  2221.             compileTo[key] = fn;
  2222.           } else if (isBatchOp) {
  2223.             this.set(rule, 'unsafe-eval');
  2224.           }
  2225.         }
  2226.       }
  2227.       return rule;
  2228.     } catch (err) {
  2229.       if (isBatchOp) {
  2230.         this.set(rule, err);
  2231.         return rule;
  2232.       } else {
  2233.         return err;
  2234.       }
  2235.     }
  2236.   },
  2237.  
  2238.   runC(text, doc = document) {
  2239.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  2240.     ai.caption = fn(text, doc);
  2241.   },
  2242.  
  2243.   runCHandler: {
  2244.     function: (text, doc) =>
  2245.       ai.rule.c(text || doc.documentElement.outerHTML, doc, ai.node, ai.rule),
  2246.     string: (text, doc) => {
  2247.       const el = $many(ai.rule.c, doc);
  2248.       return !el ? '' :
  2249.         el.getAttribute('content') ||
  2250.         el.getAttribute('title') ||
  2251.         el.textContent;
  2252.     },
  2253.     default: () =>
  2254.       (ai.tooltip || 0).text ||
  2255.       ai.node.alt ||
  2256.       $propUp(ai.node, 'title') ||
  2257.       Req.getFileName(
  2258.         ai.node.tagName === (ai.popup || 0).tagName
  2259.           ? ai.url
  2260.           : ai.node.src || $propUp(ai.node, 'href')),
  2261.   },
  2262.  
  2263.   runQ(text, doc, docUrl) {
  2264.     let url;
  2265.     if (isFunction(ai.rule.q)) {
  2266.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  2267.       if (Array.isArray(url)) {
  2268.         ai.urls = url.slice(1);
  2269.         url = url[0];
  2270.       }
  2271.     } else {
  2272.       const el = $many(ai.rule.q, doc);
  2273.       url = Req.findImageUrl(el, docUrl);
  2274.     }
  2275.     return url;
  2276.   },
  2277.  
  2278.   /** @returns {?boolean|mpiv.RuleMatchInfo} */
  2279.   runE(rule, node) {
  2280.     const {e} = rule;
  2281.     if (typeof e === 'string')
  2282.       return node.matches(e);
  2283.     let p, img, res, info;
  2284.     for (const selParent in e) {
  2285.       if ((p = node.closest(selParent)) && (img = $(e[selParent], p))) {
  2286.         if (img === node)
  2287.           res = true;
  2288.         else if ((info = RuleMatcher.adaptiveFind(img, {rules: [rule]})))
  2289.           return info;
  2290.       }
  2291.     }
  2292.     return res;
  2293.   },
  2294.  
  2295.   /** @returns {?Array} if falsy then the rule should be skipped */
  2296.   runS(node, rule, m) {
  2297.     let urls = [];
  2298.     for (const s of ensureArray(rule.s))
  2299.       urls.push(
  2300.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  2301.           isFunction(s) ? s(m, node, rule) :
  2302.             s);
  2303.     if (rule.q && urls.length > 1) {
  2304.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  2305.       return;
  2306.     }
  2307.     if (Array.isArray(urls[0]))
  2308.       urls = urls[0];
  2309.     // `false` returned by "s" property means "skip this rule", "" means "stop all rules"
  2310.     return urls[0] !== false && Array.from(new Set(urls), Util.decodeUrl);
  2311.   },
  2312.  
  2313.   /** @returns {boolean} */
  2314.   runU(rule, url) {
  2315.     const u = rule[SYM_U] || (rule[SYM_U] = UrlMatcher(rule.u));
  2316.     return u.fn.call(u.data, url);
  2317.   },
  2318.  
  2319.   substituteSingle(s, m) {
  2320.     if (!m || m.input == null) return s;
  2321.     if (s.startsWith('/') && !s.startsWith('//')) {
  2322.       const mid = s.search(/[^\\]\//) + 1;
  2323.       const end = s.lastIndexOf('/');
  2324.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  2325.       return m.input.replace(re, s.slice(mid + 1, end));
  2326.     }
  2327.     if (m.length && s.includes('$')) {
  2328.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  2329.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  2330.         for (let i = maxLength; i >= 0; i--) {
  2331.           const part = num.slice(0, i) | 0;
  2332.           if (part < m.length)
  2333.             return (m[part] || '') + num.slice(i);
  2334.         }
  2335.         return text;
  2336.       });
  2337.     }
  2338.     return s;
  2339.   },
  2340.  
  2341.   toggle(rule, prop, condition) {
  2342.     rule[prop] = condition ? rule[`_${prop}`] : null;
  2343.     return condition;
  2344.   },
  2345. };
  2346.  
  2347. const RuleMatcher = {
  2348.  
  2349.   /** @returns {Object} */
  2350.   adaptiveFind(node, opts) {
  2351.     const tn = node.tagName;
  2352.     const src = node.currentSrc || node.src;
  2353.     const isPic = tn === 'IMG' || tn === 'VIDEO' && Util.isVideoUrlExt(src);
  2354.     let a, info, url;
  2355.     // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  2356.     if (tn !== 'A') {
  2357.       url = isPic && !src.startsWith('data:') && Util.rel2abs(src);
  2358.       info = RuleMatcher.find(url, node, opts);
  2359.     }
  2360.     if (!info && (a = node.closest('A'))) {
  2361.       const ds = a.dataset;
  2362.       url = ds.expandedUrl || ds.fullUrl || ds.url || a.href || '';
  2363.       url = url.includes('//t.co/') ? 'https://' + a.textContent : url;
  2364.       url = !url.startsWith('data:') && url;
  2365.       info = RuleMatcher.find(url, a, opts);
  2366.     }
  2367.     if (!info && isPic)
  2368.       info = {node, rule: {}, url: src};
  2369.     return info;
  2370.   },
  2371.  
  2372.   /** @returns ?mpiv.RuleMatchInfo */
  2373.   find(url, node, {noHtml, rules, skipRules} = {}) {
  2374.     const tn = node.tagName;
  2375.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  2376.     const isPicOrLink = isPic || tn === 'A';
  2377.     let m, _m, html, info, _rule;
  2378.     for (const rule of rules || Ruler.rules) {
  2379.       if (skipRules && skipRules.includes(rule) ||
  2380.           rule.u && (!url || !Ruler.runU(rule, url)) ||
  2381.           rule.e && !rules && !(info = Ruler.runE(rule, node)))
  2382.         continue;
  2383.       if (info && info.url)
  2384.         return info;
  2385.       if (rule.r)
  2386.         m = !noHtml && rule.html && (isPicOrLink || rule.e)
  2387.           ? rule.r.exec(html || (html = node.outerHTML))
  2388.           : url && rule.r.exec(url);
  2389.       else if (url)
  2390.         m = Object.assign([url], {index: 0, input: url});
  2391.       else
  2392.         m = [];
  2393.       if (!m)
  2394.         continue;
  2395.       if (rule.s === '')
  2396.         return {};
  2397.       _m = m;
  2398.       _rule = rule;
  2399.       // a rule with follow:true for the currently hovered IMG produced a URL,
  2400.       // but we'll only allow it to match rules without 's' in the nested find call
  2401.       if (!isPic || rule.s != null || skipRules)
  2402.         break;
  2403.     }
  2404.     if (!_m)
  2405.       return;
  2406.     const hasS = _rule.s != null && _rule.s !== 'gallery';
  2407.     const urls = hasS ? Ruler.runS(node, _rule, _m) : [_m.input];
  2408.     if (urls)
  2409.       return RuleMatcher.makeInfo(hasS, _rule, _m, node, skipRules, urls);
  2410.   },
  2411.  
  2412.   /** @returns ?mpiv.RuleMatchInfo */
  2413.   makeInfo(hasS, rule, match, node, skipRules, urls) {
  2414.     let info;
  2415.     let url = `${urls[0]}`;
  2416.     const follow = url && hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule);
  2417.     if (url)
  2418.       url = Util.rel2abs(url);
  2419.     else
  2420.       info = {};
  2421.     if (follow)
  2422.       info = RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]});
  2423.     if (!info && (!follow || RX_MEDIA_URL.test(url))) {
  2424.       const xhr = cfg.xhr && rule.xhr;
  2425.       info = {
  2426.         match,
  2427.         node,
  2428.         rule,
  2429.         url,
  2430.         urls: urls.length > 1 ? urls.slice(1) : null,
  2431.         gallery: rule.g && Gallery.makeParser(rule.g),
  2432.         post: isFunction(rule.post) ? rule.post(match) : rule.post,
  2433.         xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  2434.       };
  2435.     }
  2436.     return info;
  2437.   },
  2438.  
  2439.   isFollowableUrl(url, rule) {
  2440.     const f = rule.follow;
  2441.     return isFunction(f) ? f(url) : f;
  2442.   },
  2443. };
  2444.  
  2445. const Req = {
  2446.  
  2447.   gmXhr(url, opts = {}) {
  2448.     if (ai.req)
  2449.       tryCatch.call(ai.req, ai.req.abort);
  2450.     return new Promise((resolve, reject) => {
  2451.       const {anonymous} = ai.rule || {};
  2452.       ai.req = GM.xmlHttpRequest(Object.assign({
  2453.         url,
  2454.         anonymous,
  2455.         withCredentials: !anonymous,
  2456.         method: 'GET',
  2457.         timeout: 30e3,
  2458.       }, opts, {
  2459.         onload: done,
  2460.         onerror: done,
  2461.         ontimeout() {
  2462.           ai.req = null;
  2463.           reject(`Timeout fetching ${url}`);
  2464.         },
  2465.       }));
  2466.       function done(r) {
  2467.         ai.req = null;
  2468.         if (r.status < 400 && !r.error)
  2469.           resolve(r);
  2470.         else
  2471.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2472.       }
  2473.     });
  2474.   },
  2475.  
  2476.   async getDoc(url) {
  2477.     if (!url) {
  2478.       // current document
  2479.       return {
  2480.         doc,
  2481.         finalUrl: location.href,
  2482.         responseText: doc.documentElement.outerHTML,
  2483.       };
  2484.     }
  2485.     const r = await (!ai.post ?
  2486.       Req.gmXhr(url) :
  2487.       Req.gmXhr(url, {
  2488.         method: 'POST',
  2489.         data: ai.post,
  2490.         headers: {
  2491.           'Content-Type': 'application/x-www-form-urlencoded',
  2492.           'Referer': url,
  2493.         },
  2494.       }));
  2495.     r.doc = $parseHtml(r.responseText);
  2496.     return r;
  2497.   },
  2498.  
  2499.   async getImage(url, pageUrl, xhr = ai.xhr) {
  2500.     ai.bufBar = false;
  2501.     ai.bufStart = now();
  2502.     const response = await Req.gmXhr(url, {
  2503.       responseType: 'blob',
  2504.       headers: {
  2505.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2506.         Referer: pageUrl || (isFunction(xhr) ? xhr() : url),
  2507.       },
  2508.       onprogress: Req.getImageProgress,
  2509.     });
  2510.     Bar.set(false);
  2511.     const type = Req.guessMimeType(response);
  2512.     let b = response.response;
  2513.     if (!b) throw 'Empty response';
  2514.     if (b.type !== type)
  2515.       b = b.slice(0, b.size, type);
  2516.     const res = xhr === 'blob'
  2517.       ? (ai.blobUrl = URL.createObjectURL(b))
  2518.       : await Req.blobToDataUrl(b);
  2519.     return [res, type.startsWith('video')];
  2520.   },
  2521.  
  2522.   getImageProgress(e) {
  2523.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2524.       ai.bufBar = true;
  2525.     if (ai.bufBar) {
  2526.       const pct = e.loaded / e.total * 100 | 0;
  2527.       const size = e.total / 1024 | 0;
  2528.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2529.     }
  2530.   },
  2531.  
  2532.   async findRedirect() {
  2533.     try {
  2534.       const {finalUrl} = await Req.gmXhr(ai.url, {
  2535.         method: 'HEAD',
  2536.         headers: {
  2537.           'Referer': location.href.split('#', 1)[0],
  2538.         },
  2539.       });
  2540.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2541.       if (!info || !info.url)
  2542.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2543.       Object.assign(ai, info);
  2544.       App.startSingle();
  2545.     } catch (e) {
  2546.       App.handleError(e);
  2547.     }
  2548.   },
  2549.  
  2550.   async saveFile() {
  2551.     const url = ai.popup.src || ai.popup.currentSrc;
  2552.     let name = Req.getFileName(ai.imageUrl || url);
  2553.     if (!name.includes('.'))
  2554.       name += '.jpg';
  2555.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2556.       $new('a', {href: url, download: name})
  2557.         .dispatchEvent(new MouseEvent('click'));
  2558.     } else {
  2559.       Status.set('+loading');
  2560.       const onload = () => Status.set('-loading');
  2561.       const gmDL = typeof GM_download === 'function';
  2562.       (gmDL ? GM_download : GM.xmlHttpRequest)({
  2563.         url,
  2564.         name,
  2565.         headers: {Referer: url},
  2566.         method: 'get', // polyfilling GM_download
  2567.         responseType: 'blob', // polyfilling GM_download
  2568.         overrideMimeType: 'application/octet-stream', // polyfilling GM_download
  2569.         onerror: e => {
  2570.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2571.           onload();
  2572.         },
  2573.         onprogress: Req.getImageProgress,
  2574.         onload({response}) {
  2575.           onload();
  2576.           if (!gmDL) { // polyfilling GM_download
  2577.             const a = Object.assign(document.createElement('a'), {
  2578.               href: URL.createObjectURL(response),
  2579.               download: name,
  2580.             });
  2581.             a.dispatchEvent(new MouseEvent('click'));
  2582.             setTimeout(URL.revokeObjectURL, 10e3, a.href);
  2583.           }
  2584.         },
  2585.       });
  2586.     }
  2587.   },
  2588.  
  2589.   getFileName(url) {
  2590.     return decodeURIComponent(url).split(/[#?&]/, 1)[0].split('/').pop();
  2591.   },
  2592.  
  2593.   blobToDataUrl(blob) {
  2594.     return new Promise((resolve, reject) => {
  2595.       const fr = new FileReader();
  2596.       fr.onload = () => resolve(fr.result);
  2597.       fr.onerror = reject;
  2598.       fr.readAsDataURL(blob);
  2599.     });
  2600.   },
  2601.  
  2602.   guessMimeType({responseHeaders, finalUrl}) {
  2603.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2604.         !RegExp.$1.includes('text/plain'))
  2605.       return RegExp.$1;
  2606.     const ext = Util.extractFileExt(finalUrl) || 'jpg';
  2607.     switch (ext.toLowerCase()) {
  2608.       case 'bmp': return 'image/bmp';
  2609.       case 'gif': return 'image/gif';
  2610.       case 'jpe': return 'image/jpeg';
  2611.       case 'jpeg': return 'image/jpeg';
  2612.       case 'jpg': return 'image/jpeg';
  2613.       case 'mp4': return 'video/mp4';
  2614.       case 'png': return 'image/png';
  2615.       case 'svg': return 'image/svg+xml';
  2616.       case 'tif': return 'image/tiff';
  2617.       case 'tiff': return 'image/tiff';
  2618.       case 'webm': return 'video/webm';
  2619.       default: return 'application/octet-stream';
  2620.     }
  2621.   },
  2622.  
  2623.   findImageUrl(n, url) {
  2624.     if (!n) return;
  2625.     let html;
  2626.     const path =
  2627.       n.getAttribute('data-src') || // lazy loaded src, whereas current `src` is an empty 1x1 pixel
  2628.       n.getAttribute('src') ||
  2629.       n.getAttribute('data-m4v') ||
  2630.       n.getAttribute('href') ||
  2631.       n.getAttribute('content') ||
  2632.       (html = n.outerHTML).includes('http') &&
  2633.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2634.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2635.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2636.   },
  2637. };
  2638.  
  2639. const Status = {
  2640.  
  2641.   set(status) {
  2642.     if (!status && !cfg.globalStatus) {
  2643.       if (ai.node) ai.node.removeAttribute(STATUS_ATTR);
  2644.       return;
  2645.     }
  2646.     const prefix = cfg.globalStatus ? PREFIX : '';
  2647.     const action = status && /^[+-]/.test(status) && status[0];
  2648.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2649.     const el = cfg.globalStatus ? doc.documentElement :
  2650.       name === 'edge' ? ai.popup :
  2651.         ai.node;
  2652.     if (!el) return;
  2653.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2654.     const oldValue = (el.getAttribute(attr) || '').trim();
  2655.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2656.     switch (action) {
  2657.       case '-':
  2658.         cls.delete(name);
  2659.         break;
  2660.       case false:
  2661.         for (const c of cls)
  2662.           if (c.startsWith(prefix) && c !== name)
  2663.             cls.delete(c);
  2664.       // fallthrough to +
  2665.       case '+':
  2666.         if (name)
  2667.           cls.add(name);
  2668.         break;
  2669.     }
  2670.     const newValue = [...cls].join(' ');
  2671.     if (newValue !== oldValue)
  2672.       el.setAttribute(attr, newValue);
  2673.   },
  2674.  
  2675.   loading(force) {
  2676.     if (!force) {
  2677.       clearTimeout(ai.timerStatus);
  2678.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2679.     } else if (!ai.popupLoaded) {
  2680.       Status.set('+loading');
  2681.     }
  2682.   },
  2683. };
  2684.  
  2685. const UrlMatcher = (() => {
  2686.   // string-to-regexp escaped chars
  2687.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2688.   // rx for '^' symbol in simple url match
  2689.   const RX_SEP = /[^\w%._-]/y;
  2690.   const RXS_SEP = RX_SEP.source;
  2691.   return match => {
  2692.     const results = [];
  2693.     for (const s of ensureArray(match)) {
  2694.       const pinDomain = s.startsWith('||');
  2695.       const pinStart = !pinDomain && s.startsWith('|');
  2696.       const endSep = s.endsWith('^');
  2697.       let fn;
  2698.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2699.       if (needle.includes('^')) {
  2700.         let plain = '';
  2701.         for (const part of needle.split('^'))
  2702.           if (part.length > plain.length)
  2703.             plain = part;
  2704.         const rx = new RegExp(
  2705.           (pinStart ? '^' : '') +
  2706.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2707.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2708.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2709.         needle = [plain, rx];
  2710.         fn = regexp;
  2711.       } else if (pinStart) {
  2712.         fn = endSep ? equals : starts;
  2713.       } else if (pinDomain) {
  2714.         const slashPos = needle.indexOf('/');
  2715.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2716.         needle = [needle, domain, slashPos > 0, endSep];
  2717.         fn = startsDomainPrescreen;
  2718.       } else if (endSep) {
  2719.         fn = ends;
  2720.       } else {
  2721.         fn = has;
  2722.       }
  2723.       results.push({fn, data: needle});
  2724.     }
  2725.     return results.length > 1 ?
  2726.       {fn: checkArray, data: results} :
  2727.       results[0];
  2728.   };
  2729.   function checkArray(s) {
  2730.     return this.some(checkArrayItem, s);
  2731.   }
  2732.   function checkArrayItem(item) {
  2733.     return item.fn.call(item.data, this);
  2734.   }
  2735.   function ends(s) {
  2736.     return s.endsWith(this) || (
  2737.       s.length > this.length &&
  2738.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2739.       endsWithSep(s));
  2740.   }
  2741.   function endsWithSep(s, pos = s.length - 1) {
  2742.     RX_SEP.lastIndex = pos;
  2743.     return RX_SEP.test(s);
  2744.   }
  2745.   function equals(s) {
  2746.     return s.startsWith(this) && (
  2747.       s.length === this.length ||
  2748.       s.length === this.length + 1 && endsWithSep(s));
  2749.   }
  2750.   function has(s) {
  2751.     return s.includes(this);
  2752.   }
  2753.   function regexp(s) {
  2754.     return s.includes(this[0]) && this[1].test(s);
  2755.   }
  2756.   function starts(s) {
  2757.     return s.startsWith(this);
  2758.   }
  2759.   function startsDomainPrescreen(url) {
  2760.     return url.includes(this[0]) && startsDomain.call(this, url);
  2761.   }
  2762.   function startsDomain(url) {
  2763.     let hostStart = url.indexOf('//');
  2764.     if (hostStart && url[hostStart - 1] !== ':')
  2765.       return;
  2766.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2767.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2768.     const [needle, domain, pinDomainEnd, endSep] = this;
  2769.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2770.     for (; ; start++) {
  2771.       start = host.indexOf(domain, start);
  2772.       if (start < 0)
  2773.         return;
  2774.       if (!start || host[start - 1] === '.')
  2775.         break;
  2776.     }
  2777.     start += hostStart;
  2778.     if (url.lastIndexOf(needle, start) !== start)
  2779.       return;
  2780.     const end = start + needle.length;
  2781.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2782.   }
  2783. })();
  2784.  
  2785. const Util = {
  2786.  
  2787.   addStyle(name, css) {
  2788.     const id = `${PREFIX}style:${name}`;
  2789.     const el = doc.getElementById(id) ||
  2790.                css && $new('style', {id});
  2791.     if (!el) return;
  2792.     if (el.textContent !== css)
  2793.       el.textContent = css;
  2794.     if (el.parentElement !== doc.head)
  2795.       doc.head.appendChild(el);
  2796.     return el;
  2797.   },
  2798.  
  2799.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2800.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2801.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2802.   },
  2803.  
  2804.   decodeHtmlEntities(s) {
  2805.     return s
  2806.       .replace(/&quot;/g, '"')
  2807.       .replace(/&apos;/g, '\'')
  2808.       .replace(/&lt;/g, '<')
  2809.       .replace(/&gt;/g, '>')
  2810.       .replace(/&amp;/g, '&');
  2811.   },
  2812.  
  2813.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2814.   decodeUrl(url) {
  2815.     if (!url || typeof url !== 'string') return url;
  2816.     const iPct = url.indexOf('%');
  2817.     const iColon = url.indexOf(':');
  2818.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2819.       decodeURIComponent(url) :
  2820.       url;
  2821.   },
  2822.  
  2823.   deepEqual(a, b) {
  2824.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2825.       return a === b;
  2826.     if (Array.isArray(a)) {
  2827.       return Array.isArray(b) &&
  2828.              a.length === b.length &&
  2829.              a.every((v, i) => Util.deepEqual(v, b[i]));
  2830.     }
  2831.     const keys = Object.keys(a);
  2832.     return keys.length === Object.keys(b).length &&
  2833.            keys.every(k => Util.deepEqual(a[k], b[k]));
  2834.   },
  2835.  
  2836.   extractFileExt: url => (url = RX_MEDIA_URL.exec(url)) && url[1],
  2837.  
  2838.   forceLayout(node) {
  2839.     // eslint-disable-next-line no-unused-expressions
  2840.     node.clientHeight;
  2841.   },
  2842.  
  2843.   formatError(e, rule) {
  2844.     const message =
  2845.       e.message ||
  2846.       e.readyState && 'Request failed.' ||
  2847.       e.type === 'error' && `File can't be displayed.${
  2848.                   $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2849.                 }` ||
  2850.       e;
  2851.     const m = [
  2852.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold'],
  2853.       ['', 'font-weight:normal'],
  2854.     ];
  2855.     m.push(...[
  2856.       ['Node: %o', ai.node],
  2857.       ['Rule: %o', rule],
  2858.       ai.url && ['URL: %s', ai.url],
  2859.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2860.     ].filter(Boolean));
  2861.     return {
  2862.       message,
  2863.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2864.       consoleArgs: m.map(([, v]) => v),
  2865.     };
  2866.   },
  2867.  
  2868.   isHovered(el) {
  2869.     // doesn't work in image tabs, browser bug?
  2870.     return App.isImageTab || el.closest(':hover');
  2871.   },
  2872.  
  2873.   isVideoUrl: url => url.startsWith('data:video') || Util.isVideoUrlExt(url),
  2874.  
  2875.   isVideoUrlExt: url => (url = Util.extractFileExt(url)) && /^(webm|mp4)$/i.test(url),
  2876.  
  2877.   newFunction(...args) {
  2878.     try {
  2879.       return App.NOP || new Function(...args);
  2880.     } catch (e) {
  2881.       if (!RX_EVAL_BLOCKED.test(e.message))
  2882.         throw e;
  2883.       App.NOP = () => {};
  2884.       return App.NOP;
  2885.     }
  2886.   },
  2887.  
  2888.   rel2abs(rel, abs = location.href) {
  2889.     try {
  2890.       return /^(data:|blob:|[-\w]+:\/\/)/.test(rel) ? rel :
  2891.         new URL(rel, abs).href;
  2892.     } catch (e) {
  2893.       return rel;
  2894.     }
  2895.   },
  2896.  
  2897.   stringify(...args) {
  2898.     const p = Array.prototype;
  2899.     const {toJSON} = p;
  2900.     if (toJSON) p.toJSON = null;
  2901.     const res = JSON.stringify(...args);
  2902.     if (toJSON) p.toJSON = toJSON;
  2903.     return res;
  2904.   },
  2905.  
  2906.   suppressTooltip() {
  2907.     for (const node of [
  2908.       ai.node.parentNode,
  2909.       ai.node,
  2910.       ai.node.firstElementChild,
  2911.     ]) {
  2912.       const t = (node || 0).title;
  2913.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2914.         ai.tooltip = {node, text: t};
  2915.         node.title = '';
  2916.         break;
  2917.       }
  2918.     }
  2919.   },
  2920.  
  2921.   tabFixUrl() {
  2922.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2923.            flattenHtml(`data:text/html;charset=utf8,
  2924.       <style>
  2925.         body {
  2926.           margin: 0;
  2927.           padding: 0;
  2928.           background: #222;
  2929.         }
  2930.         .fit {
  2931.           overflow: hidden
  2932.         }
  2933.         .fit > img {
  2934.           max-width: 100vw;
  2935.           max-height: 100vh;
  2936.         }
  2937.         body > img {
  2938.           margin: auto;
  2939.           position: absolute;
  2940.           left: 0;
  2941.           right: 0;
  2942.           top: 0;
  2943.           bottom: 0;
  2944.         }
  2945.       </style>
  2946.       <body class=fit>
  2947.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2948.       </body>
  2949.     `).replace(/\x20?([:>])\x20/g, '$1').replace(/#/g, '%23');
  2950.   },
  2951. };
  2952.  
  2953. async function setup({rule} = {}) {
  2954.   if (!isFunction(doc.body.attachShadow)) {
  2955.     alert('Cannot show MPIV config dialog: the browser is probably too old.\n' +
  2956.           'You can edit the script\'s storage directly in your userscript manager.');
  2957.     return;
  2958.   }
  2959.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2960.   let uiCfg;
  2961.   let root = (elSetup || 0).shadowRoot;
  2962.   let {blankRuleElement} = setup;
  2963.   /** @type NodeList */
  2964.   const UI = new Proxy({}, {
  2965.     get(_, id) {
  2966.       return root.getElementById(id);
  2967.     },
  2968.   });
  2969.   if (!rule || !elSetup)
  2970.     init(await Config.load({save: true}));
  2971.   if (rule)
  2972.     installRule(rule);
  2973.  
  2974.   function init(data) {
  2975.     uiCfg = data;
  2976.     $remove(elSetup);
  2977.     elSetup = $new('div', {contentEditable: true});
  2978.     root = elSetup.attachShadow({mode: 'open'});
  2979.     root.append(...createSetupElement());
  2980.     initEvents();
  2981.     renderAll();
  2982.     renderCustomScales();
  2983.     renderRules();
  2984.     doc.body.appendChild(elSetup);
  2985.     requestAnimationFrame(() => {
  2986.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elSetup.clientHeight / 4) + 'px';
  2987.     });
  2988.   }
  2989.  
  2990.   function initEvents() {
  2991.     UI._apply.onclick = UI._cancel.onclick = UI._ok.onclick = UI._x.onclick = closeSetup;
  2992.     UI._export.onclick = e => {
  2993.       dropEvent(e);
  2994.       GM.setClipboard(Util.stringify(collectConfig(), null, '  '));
  2995.       UI._exportNotification.hidden = false;
  2996.       setTimeout(() => (UI._exportNotification.hidden = true), 1000);
  2997.     };
  2998.     UI._import.onclick = e => {
  2999.       dropEvent(e);
  3000.       const s = prompt('Paste settings:');
  3001.       if (s)
  3002.         init(new Config({data: s}));
  3003.     };
  3004.     UI._install.onclick = setupRuleInstaller;
  3005.     const /** @type {HTMLTextAreaElement} */ cssApp = UI._cssApp;
  3006.     UI._reveal.onclick = e => {
  3007.       e.preventDefault();
  3008.       cssApp.hidden = !cssApp.hidden;
  3009.       if (!cssApp.hidden) {
  3010.         if (!cssApp.value) {
  3011.           App.updateStyles();
  3012.           cssApp.value = App.globalStyle.trim();
  3013.           cssApp.setSelectionRange(0, 0);
  3014.         }
  3015.         cssApp.focus();
  3016.       }
  3017.     };
  3018.     UI.start.onchange = function () {
  3019.       UI.delay.closest('label').hidden =
  3020.         UI.preload.closest('label').hidden =
  3021.           this.value !== 'auto';
  3022.     };
  3023.     UI.start.onchange();
  3024.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  3025.     // color
  3026.     for (const el of $$('[type="color"]', root)) {
  3027.       el.oninput = colorOnInput;
  3028.       el.elSwatch = el.nextElementSibling;
  3029.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  3030.       el.elOpacity.elColor = el;
  3031.     }
  3032.     function colorOnInput() {
  3033.       this.elSwatch.style.setProperty('--color',
  3034.         Util.color(this.value, this.elOpacity.valueAsNumber));
  3035.     }
  3036.     // range
  3037.     for (const el of $$('[type="range"]', root)) {
  3038.       el.oninput = rangeOnInput;
  3039.       el.onblur = rangeOnBlur;
  3040.       el.addEventListener('focusin', rangeOnFocus);
  3041.     }
  3042.     function rangeOnBlur(e) {
  3043.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  3044.         this.elEdit.onblur(e);
  3045.     }
  3046.     function rangeOnFocus() {
  3047.       if (this.elEdit) return;
  3048.       const {min, max, step, value} = this;
  3049.       this.elEdit = $new('input', {
  3050.         value, min, max, step,
  3051.         className: 'range-edit',
  3052.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  3053.         type: 'number',
  3054.         elRange: this,
  3055.         onblur: rangeEditOnBlur,
  3056.         oninput: rangeEditOnInput,
  3057.       });
  3058.       this.insertAdjacentElement('afterend', this.elEdit);
  3059.     }
  3060.     function rangeOnInput() {
  3061.       this.title = (this.dataset.title || '').replace('$', this.value);
  3062.       if (this.elColor) this.elColor.oninput();
  3063.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  3064.     }
  3065.     // range-edit
  3066.     function rangeEditOnBlur(e) {
  3067.       if (e.relatedTarget !== this.elRange) {
  3068.         this.remove();
  3069.         this.elRange.elEdit = null;
  3070.       }
  3071.     }
  3072.     function rangeEditOnInput() {
  3073.       this.elRange.valueAsNumber = this.valueAsNumber;
  3074.       this.elRange.oninput();
  3075.     }
  3076.     // prevent the main page from interpreting key presses in inputs as hotkeys
  3077.     // which may happen since it sees only the outer <div> in the event |target|
  3078.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  3079.   }
  3080.  
  3081.   function closeSetup(event) {
  3082.     const isApply = this.id === '_apply';
  3083.     if (event && (this.id === '_ok' || isApply)) {
  3084.       cfg = uiCfg = collectConfig({save: true, clone: isApply});
  3085.       Ruler.init();
  3086.       Menu.reRegisterAlt();
  3087.       if (isApply) {
  3088.         renderCustomScales();
  3089.         UI._css.textContent = cfg._getCss();
  3090.         return;
  3091.       }
  3092.     }
  3093.     $remove(elSetup);
  3094.     elSetup = null;
  3095.   }
  3096.  
  3097.   function collectConfig({save, clone} = {}) {
  3098.     let data = {};
  3099.     for (const el of $$('input[id], select[id]', root))
  3100.       data[el.id] = el.type === 'checkbox' ? el.checked :
  3101.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  3102.           el.value || '';
  3103.     Object.assign(data, {
  3104.       css: UI.css.value.trim(),
  3105.       delay: UI.delay.valueAsNumber * 1000,
  3106.       hosts: collectRules(),
  3107.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  3108.       scales: UI.scales.value
  3109.         .trim()
  3110.         .split(/[,;]*\s+/)
  3111.         .map(x => x.replace(',', '.'))
  3112.         .filter(x => !isNaN(parseFloat(x))),
  3113.     });
  3114.     if (clone)
  3115.       data = JSON.parse(Util.stringify(data));
  3116.     return new Config({data, save});
  3117.   }
  3118.  
  3119.   function collectRules() {
  3120.     return [...UI._rules.children]
  3121.       .map(el => [el.value.trim(), el[RULE]])
  3122.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  3123.       .map(([s, json]) => json || s)
  3124.       .filter(Boolean);
  3125.   }
  3126.  
  3127.   function checkRule({target: el}) {
  3128.     let json, error, title;
  3129.     const prev = el.previousElementSibling;
  3130.     if (el.value) {
  3131.       json = Ruler.parse(el.value);
  3132.       error = json instanceof Error && (json.message || String(json));
  3133.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  3134.                             !/^[-.a-z0-9]*$/i.test(json.d);
  3135.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  3136.         .filter(Boolean).join('\n');
  3137.       el.classList.toggle('invalid-domain', invalidDomain);
  3138.       el.classList.toggle('matching-domain', !!json.d && hostname.includes(json.d));
  3139.       if (!prev)
  3140.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3141.     } else if (prev) {
  3142.       prev.focus();
  3143.       el.remove();
  3144.     }
  3145.     el[RULE] = !error && json;
  3146.     el.title = title;
  3147.     el.setCustomValidity(error || '');
  3148.   }
  3149.  
  3150.   async function focusRule({target: el, relatedTarget: from}) {
  3151.     if (el === this)
  3152.       return;
  3153.     await new Promise(setTimeout);
  3154.     if (el[RULE] && el.rows < 2) {
  3155.       let i = el.selectionStart;
  3156.       const txt = el.value = Ruler.format(el[RULE], {expand: true});
  3157.       i += txt.slice(0, i).match(/^\s*/gm).reduce((len, s) => len + s.length, 0);
  3158.       el.setSelectionRange(i, i);
  3159.       el.rows = txt.match(/^/gm).length;
  3160.     }
  3161.     if (!this.contains(from))
  3162.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  3163.   }
  3164.  
  3165.   function installRule(rule) {
  3166.     const inputs = UI._rules.children;
  3167.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  3168.     if (!el) {
  3169.       el = inputs[0];
  3170.       el[RULE] = rule;
  3171.       el.value = Ruler.format(rule);
  3172.       el.hidden = false;
  3173.       const i = Math.max(0, collectRules().indexOf(rule));
  3174.       inputs[i].insertAdjacentElement('afterend', el);
  3175.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3176.     }
  3177.     const rect = el.getBoundingClientRect();
  3178.     if (rect.bottom < 0 ||
  3179.         rect.bottom > el.parentNode.offsetHeight)
  3180.       el.scrollIntoView();
  3181.     el.classList.add('highlight');
  3182.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  3183.     el.focus();
  3184.   }
  3185.  
  3186.   function renderRules() {
  3187.     const rules = UI._rules;
  3188.     rules.addEventListener('input', checkRule);
  3189.     rules.addEventListener('focusin', focusRule);
  3190.     rules.addEventListener('paste', focusRule);
  3191.     blankRuleElement =
  3192.       setup.blankRuleElement =
  3193.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  3194.     for (const rule of uiCfg.hosts || []) {
  3195.       const el = blankRuleElement.cloneNode();
  3196.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  3197.       rules.appendChild(el);
  3198.       checkRule({target: el});
  3199.     }
  3200.     const search = UI._search;
  3201.     search.oninput = () => {
  3202.       setup.search = search.value;
  3203.       const s = search.value.toLowerCase();
  3204.       for (const el of rules.children)
  3205.         el.hidden = s && !el.value.toLowerCase().includes(s);
  3206.     };
  3207.     search.value = setup.search || '';
  3208.     if (search.value)
  3209.       search.oninput();
  3210.   }
  3211.  
  3212.   function renderCustomScales() {
  3213.     UI.scales.value = uiCfg.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  3214.   }
  3215.  
  3216.   function renderAll() {
  3217.     for (const el of $$('input[id], select[id], textarea[id]', root))
  3218.       if (el.id in uiCfg)
  3219.         el[el.type === 'checkbox' ? 'checked' : 'value'] = uiCfg[el.id];
  3220.     for (const el of $$('input[type="range"]', root))
  3221.       el.oninput();
  3222.     for (const el of $$('a[href^="http"]', root))
  3223.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  3224.     UI.delay.valueAsNumber = uiCfg.delay / 1000;
  3225.     UI.scale.valueAsNumber = Math.round(clamp(uiCfg.scale - 1, 0, 1) * 100);
  3226.   }
  3227. }
  3228.  
  3229. function setupClickedRule(event) {
  3230.   let rule;
  3231.   const el = event.target.closest('blockquote, code, pre');
  3232.   if (el && !event.button && !eventModifiers(event) && (rule = Ruler.fromElement(el))) {
  3233.     dropEvent(event);
  3234.     setup({rule});
  3235.   }
  3236. }
  3237.  
  3238. async function setupRuleInstaller(e) {
  3239.   dropEvent(e);
  3240.   const parent = this.parentElement;
  3241.   parent.children._installLoading.hidden = false;
  3242.   this.remove();
  3243.   let rules;
  3244.  
  3245.   try {
  3246.     rules = extractRules(await Req.getDoc(this.href));
  3247.     const selector = $new('select', {
  3248.       size: 8,
  3249.       style: 'width: 100%',
  3250.       selectedIndex: findMatchingRuleIndex(),
  3251.       ondblclick: e => e.target !== selector && maybeSetup(e),
  3252.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  3253.     }, rules.map(renderRule));
  3254.     parent.children._installLoading.remove();
  3255.     parent.children._installHint.hidden = false;
  3256.     parent.appendChild(selector);
  3257.     requestAnimationFrame(() => {
  3258.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  3259.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  3260.       selector.focus();
  3261.     });
  3262.   } catch (e) {
  3263.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  3264.   }
  3265.  
  3266.   function extractRules({doc}) {
  3267.     // sort by name
  3268.     return [...$$('#wiki-body tr', doc)]
  3269.       .map(tr => [
  3270.         tr.cells[0].textContent.trim(),
  3271.         Ruler.fromElement(tr.cells[1]),
  3272.       ])
  3273.       .filter(([name, r]) =>
  3274.         name && r && (!r.d || hostname.includes(r.d)))
  3275.       .sort(([a], [b]) =>
  3276.         (a = a.toLowerCase()) < (b = b.toLowerCase()) ? -1 :
  3277.           a > b ? 1 :
  3278.             0);
  3279.   }
  3280.  
  3281.   function findMatchingRuleIndex() {
  3282.     const dottedHost = `.${hostname}.`;
  3283.     let maxCount = 0, maxIndex = 0, index = 0;
  3284.     for (const [name, {d}] of rules) {
  3285.       let count = !!(d && hostname.includes(d)) * 10;
  3286.       for (const part of name.toLowerCase().split(/[^a-z\d.-]+/i))
  3287.         count += dottedHost.includes(`.${part}.`) && part.length;
  3288.       if (count > maxCount) {
  3289.         maxCount = count;
  3290.         maxIndex = index;
  3291.       }
  3292.       index++;
  3293.     }
  3294.     return maxIndex;
  3295.   }
  3296.  
  3297.   function renderRule([name, rule]) {
  3298.     return $new('option', {
  3299.       textContent: name,
  3300.       title: Ruler.format(rule, {expand: true})
  3301.         .replace(/^{|\s*}$/g, '')
  3302.         .split('\n')
  3303.         .slice(0, 12)
  3304.         .map(renderTitleLine)
  3305.         .filter(Boolean)
  3306.         .join('\n'),
  3307.     });
  3308.   }
  3309.  
  3310.   function renderTitleLine(line, i, arr) {
  3311.     return (
  3312.       // show ... on 10th line if there are more lines
  3313.       i === 9 && arr.length > 10 ? '...' :
  3314.         i > 10 ? '' :
  3315.           // truncate to 100 chars
  3316.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  3317.             // strip the leading space
  3318.             .replace(/^\s/, ''));
  3319.   }
  3320.  
  3321.   function maybeSetup(e) {
  3322.     if (!eventModifiers(e))
  3323.       setup({rule: rules[e.currentTarget.selectedIndex][1]});
  3324.   }
  3325. }
  3326.  
  3327. const CSS_SETUP = /*language=css*/ `
  3328.   :host {
  3329.     all: initial !important;
  3330.     position: fixed !important;
  3331.     z-index: 2147483647 !important;
  3332.     top: 20px !important;
  3333.     right: 20px !important;
  3334.     padding: 1.5em !important;
  3335.     color: #000 !important;
  3336.     background: #eee !important;
  3337.     box-shadow: 5px 5px 25px 2px #000 !important;
  3338.     width: 33em !important;
  3339.     border: 1px solid black !important;
  3340.     display: flex !important;
  3341.     flex-direction: column !important;
  3342.   }
  3343.   main {
  3344.     font: 12px/15px sans-serif;
  3345.   }
  3346.   table {
  3347.     text-align:left;
  3348.   }
  3349.   ul {
  3350.     max-height: calc(100vh - 200px);
  3351.     margin: 0 0 15px 0;
  3352.     padding: 0;
  3353.     list-style: none;
  3354.   }
  3355.   li {
  3356.     margin: 0;
  3357.     padding: .25em 0;
  3358.   }
  3359.   li.options {
  3360.     display: flex;
  3361.     align-items: center;
  3362.     justify-content: space-between;
  3363.   }
  3364.   li.row {
  3365.     align-items: start;
  3366.     flex-wrap: wrap;
  3367.   }
  3368.   li.row label {
  3369.     display: flex;
  3370.     flex-direction: row;
  3371.     align-items: center;
  3372.   }
  3373.   li.row input {
  3374.     margin-right: .25em;
  3375.   }
  3376.   li.stretch label {
  3377.     flex: 1;
  3378.     white-space: nowrap;
  3379.   }
  3380.   li.stretch label > span {
  3381.     display: flex;
  3382.     flex-direction: row;
  3383.     flex: 1;
  3384.   }
  3385.   label {
  3386.     display: inline-flex;
  3387.     flex-direction: column;
  3388.   }
  3389.   label:not(:last-child) {
  3390.     margin-right: 1em;
  3391.   }
  3392.   input, select {
  3393.     min-height: 1.3em;
  3394.     box-sizing: border-box;
  3395.   }
  3396.   input[type=checkbox] {
  3397.     margin-left: 0;
  3398.   }
  3399.   input[type=number] {
  3400.     width: 4em;
  3401.   }
  3402.   input:not([type=checkbox])  {
  3403.     padding: 0 .25em;
  3404.   }
  3405.   input[type=range] {
  3406.     flex: 1;
  3407.     width: 100%;
  3408.     margin: 0 .25em;
  3409.     padding: 0;
  3410.     filter: saturate(0);
  3411.     opacity: .5;
  3412.   }
  3413.   u + input[type=range] {
  3414.     max-width: 3em;
  3415.   }
  3416.   input[type=range]:hover {
  3417.     filter: none;
  3418.     opacity: 1;
  3419.   }
  3420.   input[type=color] {
  3421.     position: absolute;
  3422.     width: calc(1.5em + 2px);
  3423.     opacity: 0;
  3424.     cursor: pointer;
  3425.   }
  3426.   u {
  3427.     position: relative;
  3428.     flex: 0 0 1.5em;
  3429.     height: 1.5em;
  3430.     border: 1px solid #888;
  3431.     pointer-events: none;
  3432.     color: #888;
  3433.     background-image:
  3434.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  3435.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  3436.     background-size: .5em .5em;
  3437.     background-position: 0 0, .25em .25em;
  3438.   }
  3439.   u::after {
  3440.     position: absolute;
  3441.     top: 0;
  3442.     left: 0;
  3443.     right: 0;
  3444.     bottom: 0;
  3445.     content: "";
  3446.     background-color: var(--color);
  3447.   }
  3448.   .range-edit {
  3449.     position: absolute;
  3450.     box-shadow: 0 0.25em 1em #000;
  3451.     z-index: 99;
  3452.   }
  3453.   textarea {
  3454.     resize: vertical;
  3455.     margin: 1px 0;
  3456.     font: 11px/1.25 Consolas, monospace;
  3457.   }
  3458.   :invalid {
  3459.     background-color: #f002;
  3460.     border-color: #800;
  3461.   }
  3462.   code {
  3463.     font-weight: bold;
  3464.   }
  3465.   a {
  3466.     text-decoration: none;
  3467.     color: LinkText;
  3468.     cursor: pointer;
  3469.   }
  3470.   a:hover {
  3471.     text-decoration: underline;
  3472.   }
  3473.   button {
  3474.     padding: .2em 1em;
  3475.     margin: 0 1em;
  3476.   }
  3477.   kbd {
  3478.     padding: 1px 6px;
  3479.     font-weight: bold;
  3480.     font-family: Consolas, monospace;
  3481.     border: 1px solid #888;
  3482.     border-radius: 3px;
  3483.     box-shadow: inset 1px 1px 5px #8888, .25px .5px 2px #0008;
  3484.   }
  3485.   .column {
  3486.     display: flex;
  3487.     flex-direction: column;
  3488.   }
  3489.   .highlight {
  3490.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  3491.     animation-fill-mode: both;
  3492.   }
  3493.   #_rules > * {
  3494.     word-break: break-all;
  3495.   }
  3496.   #_rules > :not(:focus) {
  3497.     overflow: hidden; /* prevents wrapping in FF */
  3498.   }
  3499.   .invalid-domain {
  3500.     opacity: .5;
  3501.   }
  3502.   .matching-domain {
  3503.     border-color: #56b8ff;
  3504.     background: #d7eaff;
  3505.   }
  3506.   #_x {
  3507.     position: absolute;
  3508.     top: 0;
  3509.     right: 0;
  3510.     padding: 4px 8px;
  3511.     cursor: pointer;
  3512.     user-select: none;
  3513.   }
  3514.   #_x:hover {
  3515.     background-color: #8884;
  3516.   }
  3517.   #_cssApp {
  3518.     color: seagreen;
  3519.   }
  3520.   #_exportNotification {
  3521.     color: green;
  3522.     font-weight: bold;
  3523.     position: absolute;
  3524.     left: 0;
  3525.     right: 0;
  3526.     bottom: 2px;
  3527.   }
  3528.   #_installHint {
  3529.     color: green;
  3530.   }
  3531.   #_usage, #_usage * {
  3532.     font: inherit;
  3533.     color: inherit;
  3534.   }
  3535.   #_usage th, #_usage kbd {
  3536.     font-weight: bold;
  3537.     white-space: pre-line;
  3538.   }
  3539.   @keyframes fade-in {
  3540.     from { background-color: deepskyblue }
  3541.     to {}
  3542.   }
  3543.   @media (prefers-color-scheme: dark) {
  3544.     :host {
  3545.       color: #aaa !important;
  3546.       background: #333 !important;
  3547.     }
  3548.     a {
  3549.       color: deepskyblue;
  3550.     }
  3551.     button {
  3552.       background: linear-gradient(-5deg, #333, #555);
  3553.       border: 1px solid #000;
  3554.       box-shadow: 0 2px 6px #181818;
  3555.       border-radius: 3px;
  3556.       cursor: pointer;
  3557.     }
  3558.     button:hover {
  3559.       background: linear-gradient(-5deg, #333, #666);
  3560.     }
  3561.     textarea, input, select {
  3562.       background: #111;
  3563.       color: #BBB;
  3564.       border: 1px solid #555;
  3565.     }
  3566.     input[type=checkbox] {
  3567.       filter: invert(1);
  3568.     }
  3569.     input[type=range] {
  3570.       filter: invert(1) saturate(0);
  3571.     }
  3572.     input[type=range]:hover {
  3573.       filter: invert(1);
  3574.     }
  3575.     kbd {
  3576.       border-color: #666;
  3577.     }
  3578.     @supports (-moz-appearance: none) {
  3579.       input[type=checkbox],
  3580.       input[type=range],
  3581.       input[type=range]:hover {
  3582.         filter: none;
  3583.       }
  3584.     }
  3585.     .range-edit {
  3586.       box-shadow: 0 .5em 1em .5em #000;
  3587.     }
  3588.     .matching-domain {
  3589.       border-color: #0065af;
  3590.       background: #032b58;
  3591.       color: #ddd;
  3592.     }
  3593.     #_cssApp {
  3594.       color: darkseagreen;
  3595.     }
  3596.     #_installHint {
  3597.       color: greenyellow;
  3598.     }
  3599.     ::-webkit-scrollbar {
  3600.       width: 14px;
  3601.       height: 14px;
  3602.       background: #333;
  3603.     }
  3604.     ::-webkit-scrollbar-button:single-button {
  3605.       background: radial-gradient(circle at center, #555 40%, #333 40%)
  3606.     }
  3607.     ::-webkit-scrollbar-track-piece {
  3608.       background: #444;
  3609.       border: 4px solid #333;
  3610.       border-radius: 8px;
  3611.     }
  3612.     ::-webkit-scrollbar-thumb {
  3613.       border: 3px solid #333;
  3614.       border-radius: 8px;
  3615.       background: #666;
  3616.     }
  3617.     ::-webkit-resizer {
  3618.       background: #111 linear-gradient(-45deg, transparent 3px, #888 3px, #888 4px, transparent 4px, transparent 6px, #888 6px, #888 7px, transparent 7px) no-repeat;
  3619.       border: 2px solid transparent;
  3620.     }
  3621.   }
  3622. `;
  3623.  
  3624. function createSetupElement() {
  3625.   const MPIV_BASE_URL = 'https://github.com/tophf/mpiv/wiki/';
  3626.   const scalesHint = 'Leave it empty and click Apply or OK to restore the default values.';
  3627.   const $newLink = (text, href, props) =>
  3628.     $new('a', Object.assign({target: '_blank'}, href && {href}, props), text);
  3629.   const $newCheck = (label, id, title, props) =>
  3630.     $new('label', Object.assign({title}, props), [
  3631.       $new('input', {id, type: 'checkbox'}),
  3632.       label,
  3633.     ]);
  3634.   const $newKbd = (str, tag = 'fragment') =>
  3635.     $new(tag, str.split(/({.+?})/).map(s => s[0] === '{' ? $new('kbd', s.slice(1, -1)) : s));
  3636.   const $newRange = (id, title, min = 0, max = 100, step = 1, type = 'range') =>
  3637.     $new('input', {id, min, max, step, type, 'data-title': title});
  3638.   const $newSelect = (label, id, values) =>
  3639.     $new('label', [
  3640.       label,
  3641.       $new('select', {id}, Object.entries(values).map(([k, v]) =>
  3642.         $new('option', Object.assign({value: k}, typeof v === 'object' ? v : {textContent: v})))),
  3643.     ]);
  3644.   const $newTable = obj =>
  3645.     $new('table#_usage', Object.entries(obj).map(([name, val]) =>
  3646.       $new('tr', name.startsWith('---') ? $new('td', '\xA0') : [
  3647.         $new('th', name),
  3648.         ...ensureArray(val).map(cell => cell instanceof Node ? cell : $newKbd(cell, 'td')),
  3649.       ])));
  3650.   return [
  3651.     $new('style', CSS_SETUP),
  3652.     $new('style#_css', cfg._getCss()),
  3653.     $new(`main#${PREFIX}setup`, [
  3654.       $new('div#_x'),
  3655.       $new('ul.column', [
  3656.         $new('details', {style: 'margin: -1em 0 0'}, [
  3657.           $new('summary', {style: 'cursor: pointer; font: bold 16px normal; margin-bottom: .5em'},
  3658.             $new('b', 'MPIV Help & hotkeys')),
  3659.           $newTable({
  3660.             'Activate': 'move mouse cursor over thumbnail',
  3661.             'Deactivate': 'move cursor off thumbnail, or click, or zoom out fully',
  3662.             'Prevent/freeze': 'hold down {Shift} while entering/leaving thumbnail',
  3663.             'Force-activate\n(videos or small pics)': 'hold {Ctrl} while entering image element',
  3664.             '---1': '',
  3665.             'Start zooming':
  3666.               'configurable: automatic or via right-click / {Shift} while popup is visible',
  3667.             'Zoom': 'mouse wheel',
  3668.             'Rotate': '{L} {r} keys (left or right)',
  3669.             'Flip/mirror': '{h} {v} keys (horizontally or vertically)',
  3670.             'Previous/next\nin album': 'mouse wheel, {j} {k} or {←} {→} keys',
  3671.             '---2': '',
  3672.           }),
  3673.           $newTable({
  3674.             'Antialiasing on/off': ['{a}', $new('td', {rowSpan: 4}, 'key while popup is visible')],
  3675.             'Download': '{d}',
  3676.             'Mute/unmute': '{m}',
  3677.             'Open in tab': '{t}',
  3678.           }),
  3679.         ]),
  3680.         $new('li.options.stretch', [
  3681.           $newSelect('Popup shows on', 'start', {
  3682.             context: 'Right-click / \u2261 / Ctrl',
  3683.             contextMK: 'Right-click / \u2261',
  3684.             contextM: 'Right-click',
  3685.             contextK: {
  3686.               textContent: '\u2261 key',
  3687.               title: '\u2261 is the Menu key (near the right Ctrl)',
  3688.             },
  3689.             ctrl: 'Ctrl',
  3690.             auto: 'automatically',
  3691.           }),
  3692.           $new('label', ['after, sec', $newRange('delay', 'seconds', .05, 10, .05, 'number')]),
  3693.           $new('label', {title: '(if the full version of the hovered image is ...% larger)'},
  3694.             ['if larger, %', $newRange('scale', null, 0, 100, 1, 'number')]),
  3695.           $newSelect('Zoom activates on', 'zoom', {
  3696.             context: 'Right click / Shift',
  3697.             wheel: 'Wheel up / Shift',
  3698.             shift: 'Shift',
  3699.             auto: 'automatically',
  3700.           }),
  3701.           $newSelect('...and zooms to', 'fit', {
  3702.             'all': 'fit to window',
  3703.             'large': 'fit if larger',
  3704.             'no': '100%',
  3705.             '': {textContent: 'custom', title: 'Use custom scale factors'},
  3706.           }),
  3707.         ]),
  3708.         $new('li.options', [
  3709.           $new('label', ['Zoom step, %', $newRange('zoomStep', null, 100, 400, 1, 'number')]),
  3710.           $newSelect('When fully zoomed out:', 'zoomOut', {
  3711.             stay: 'stay in zoom mode',
  3712.             auto: 'stay if still hovered',
  3713.             unzoom: 'undo zoom mode',
  3714.             close: 'close popup',
  3715.           }),
  3716.           $new('label', {
  3717.             style: 'flex: 1',
  3718.             title: `
  3719.               Scale factors to use when “zooms to” selector is set to “custom”.
  3720.               0 = fit to window,
  3721.               0! = same as 0 but also removes smaller values,
  3722.               * after a value marks the default zoom factor, for example: 1*
  3723.               The popup won't shrink below the image's natural size or window size for bigger mages.
  3724.               ${scalesHint}
  3725.             `.trim().replace(/\n\s+/g, '\r'),
  3726.           }, ['Custom scale factors:', $new('input#scales', {placeholder: scalesHint})]),
  3727.         ]),
  3728.         $new('li.options.row', [
  3729.           $new([
  3730.             $newCheck('Centered*', 'center',
  3731.               '...or try to keep the original link/thumbnail unobscured by the popup'),
  3732.             $newCheck('Preload on hover*', 'preload',
  3733.               'Provides smoother experience but increases network traffic'),
  3734.             $newCheck('Run in image tabs', 'imgtab'),
  3735.             $newCheck('Require Ctrl key for <video>', 'videoCtrl'),
  3736.             $newCheck('Keep preview on blur*', 'keepOnBlur',
  3737.               'i.e. when mouse pointer moves outside the page'),
  3738.           ]),
  3739.           $new([
  3740.             $newCheck('Mute videos', 'mute'),
  3741.             $newCheck('Spoof hotlinking*`, ', 'xhr',
  3742.               'Disable only if you spoof the HTTP headers yourself'),
  3743.             $newCheck('Set status on <html>*', 'globalStatus',
  3744.               "Causes slowdowns so don't enable unless you explicitly use it in your custom CSS"),
  3745.             $newCheck('Keep playing video*', 'keepVids',
  3746.               '...until you press Esc key or click elsewhere'),
  3747.           ]),
  3748.           $new([
  3749.             $newCheck('Show when fully loaded*', 'waitLoad',
  3750.               '...or show a partial image while still loading'),
  3751.             $newCheck('Fade-in transition', 'uiFadein'),
  3752.             $newCheck('Fade-in transition in gallery', 'uiFadeinGallery'),
  3753.             $newCheck('Auto-start switch in menu*', 'startAltShown',
  3754.               "Show a switch for 'auto-start' mode in userscript manager menu"),
  3755.           ]),
  3756.         ]),
  3757.         $new('li.options.stretch', [
  3758.           $new('label', [
  3759.             'Background',
  3760.             $new('span', [
  3761.               $new('input#uiBackgroundColor', {type: 'color'}), $new('u'),
  3762.               $newRange('uiBackgroundOpacity', 'Opacity: $%'),
  3763.             ]),
  3764.           ]),
  3765.           $new('label', [
  3766.             'Border color, opacity, size',
  3767.             $new('span', [
  3768.               $new('input#uiBorderColor', {type: 'color'}), $new('u'),
  3769.               $newRange('uiBorderOpacity', 'Opacity: $%'),
  3770.               $newRange('uiBorder', 'Border size: $px', 0, 20),
  3771.             ]),
  3772.           ]),
  3773.           $new('label', [
  3774.             'Shadow color, opacity, size',
  3775.             $new('span', [
  3776.               $new('input#uiShadowColor', {type: 'color'}), $new('u'),
  3777.               $newRange('uiShadowOpacity', 'Opacity: $%'),
  3778.               $newRange('uiShadow', 'Shadow blur radius: $px\n"0" disables the shadow.', 0, 20),
  3779.             ]),
  3780.           ]),
  3781.           $new('label', ['Padding', $new('span', $newRange('uiPadding', 'Padding: $px'))]),
  3782.           $new('label', ['Margin', $new('span', $newRange('uiMargin', 'Margin: $px'))]),
  3783.         ]),
  3784.         $new('li', [
  3785.           $newLink('Custom CSS:', `${MPIV_BASE_URL}Custom-CSS`),
  3786.           ' e.g. ', $new('b', '#mpiv-popup { animation: none !important }'),
  3787.           $newLink('View the built-in CSS', '', {
  3788.             id: '_reveal',
  3789.             tabIndex: 0,
  3790.             style: 'float: right',
  3791.             title: 'You can copy parts of it to override them in your custom CSS',
  3792.           }),
  3793.           $new('.column', [
  3794.             $new('textarea#css', {spellcheck: false}),
  3795.             $new('textarea#_cssApp', {spellcheck: false, hidden: true, readOnly: true, rows: 30}),
  3796.           ]),
  3797.         ]),
  3798.         $new('li', {style: 'display: flex; justify-content: space-between;'}, [
  3799.           $new('div',
  3800.             $newLink('Custom host rules:', `${MPIV_BASE_URL}Custom-host-rules`)),
  3801.           $new('div', {style: 'white-space: pre-line'}, [
  3802.             'To disable, put any symbol except ', $new('code', 'a..z 0..9 - .'),
  3803.             '\nin "d" value, for example ', $new('code', '"d": "!foo.com"'),
  3804.           ]),
  3805.           $new('div',
  3806.             $new('input#_search',
  3807.               {type: 'search', placeholder: 'Search', style: 'width: 10em; margin-left: 1em'})),
  3808.         ]),
  3809.         $new('li', {
  3810.           style: 'margin-left: -3px; margin-right: -3px; overflow-y: auto; ' +
  3811.                  'padding-left: 3px; padding-right: 3px;',
  3812.         }, [
  3813.           $new('div#_rules.column',
  3814.             $new('textarea#css', {spellcheck: false, rows: 1})),
  3815.         ]),
  3816.         $new('li', [
  3817.           $new('div#_installLoading', {hidden: true}, 'Loading...'),
  3818.           $new('div#_installHint', {hidden: true}, [
  3819.             'Double-click the rule (or select and press Enter) to add it. ',
  3820.             'Click ', $new('code', 'Apply'), ' or ', $new('code', 'OK'), ' to confirm.',
  3821.           ]),
  3822.           $newLink('Install rule from repository...', `${MPIV_BASE_URL}Rules`, {id: '_install'}),
  3823.         ]),
  3824.       ]),
  3825.       $new('div', {style: 'text-align:center'}, [
  3826.         $new('button#_ok', {accessKey: 'o'}, 'OK'),
  3827.         $new('button#_apply', {accessKey: 'a'}, 'Apply'),
  3828.         $new('button#_import', {style: 'margin-right: 0'}, 'Import'),
  3829.         $new('button#_export', {style: 'margin-left: 0'}, 'Export'),
  3830.         $new('button#_cancel', 'Cancel'),
  3831.         $new('div#_exportNotification', {hidden: true}, 'Copied to clipboard'),
  3832.       ]),
  3833.     ]),
  3834.   ];
  3835. }
  3836.  
  3837. function createGlobalStyle() {
  3838.   App.globalStyle = /*language=CSS*/ (String.raw`
  3839.     #\mpiv-bar {
  3840.       position: fixed;
  3841.       z-index: 2147483647;
  3842.       top: 0;
  3843.       left: 0;
  3844.       right: 0;
  3845.       opacity: 0;
  3846.       transition: opacity 1s ease .25s;
  3847.       text-align: center;
  3848.       font-family: sans-serif;
  3849.       font-size: 15px;
  3850.       font-weight: bold;
  3851.       background: #0005;
  3852.       color: white;
  3853.       padding: 4px 10px;
  3854.       text-shadow: .5px .5px 2px #000;
  3855.     }
  3856.     #\mpiv-bar.\mpiv-show,
  3857.     #\mpiv-bar[data-force] {
  3858.       opacity: 1;
  3859.     }
  3860.     #\mpiv-bar[data-zoom]::after {
  3861.       content: " (" attr(data-zoom) ")";
  3862.       opacity: .8;
  3863.     }
  3864.     #\mpiv-popup.\mpiv-show {
  3865.       display: inline;
  3866.     }
  3867.     #\mpiv-popup {
  3868.       display: none;
  3869.       cursor: none;
  3870.       ${cfg.uiFadein ? String.raw`
  3871.   animation: .2s \mpiv-fadein both;
  3872.   transition: box-shadow .25s, background-color .25s;
  3873.   ` : ''}
  3874.       ${App.popupStyleBase = `
  3875.   border: none;
  3876.   box-sizing: border-box;
  3877.   background-size: cover;
  3878.   position: fixed;
  3879.   z-index: 2147483647;
  3880.   padding: 0;
  3881.   margin: 0;
  3882.   top: 0;
  3883.   left: 0;
  3884.   width: auto;
  3885.   height: auto;
  3886.   transform-origin: center;
  3887.   max-width: none;
  3888.   max-height: none;
  3889. `}
  3890.     }
  3891.     #\mpiv-popup.\mpiv-show {
  3892.       ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3893.       ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3894.       ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3895.       box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3896.     }
  3897.     #\mpiv-popup.\mpiv-show[loaded] {
  3898.       background-color: ${Util.color('Background')};
  3899.       ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3900.     }
  3901.     #\mpiv-popup[data-gallery-flip] {
  3902.       animation: none;
  3903.       transition: none;
  3904.     }
  3905.     #\mpiv-popup[data-no-aa],
  3906.     #\mpiv-popup.\mpiv-zoom-max {
  3907.       image-rendering: pixelated;
  3908.     }
  3909.     #\mpiv-setup {
  3910.     }
  3911.     @keyframes \mpiv-fadein {
  3912.       from {
  3913.         opacity: 0;
  3914.         border-color: transparent;
  3915.       }
  3916.       to {
  3917.         opacity: 1;
  3918.       }
  3919.     }
  3920.   ` + (cfg.globalStatus ? String.raw`
  3921.     :root.\mpiv-loading:not(.\mpiv-preloading) *:hover {
  3922.       cursor: progress !important;
  3923.     }
  3924.     :root.\mpiv-edge #\mpiv-popup {
  3925.       cursor: default;
  3926.     }
  3927.     :root.\mpiv-error *:hover {
  3928.       cursor: not-allowed !important;
  3929.     }
  3930.     :root.\mpiv-ready *:hover,
  3931.     :root.\mpiv-large *:hover {
  3932.       cursor: zoom-in !important;
  3933.     }
  3934.     :root.\mpiv-shift *:hover {
  3935.       cursor: default !important;
  3936.     }
  3937.   ` : String.raw`
  3938.     [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]):hover {
  3939.       cursor: progress;
  3940.     }
  3941.     [\mpiv-status~="edge"]:hover {
  3942.       cursor: default;
  3943.     }
  3944.     [\mpiv-status~="error"]:hover {
  3945.       cursor: not-allowed;
  3946.     }
  3947.     [\mpiv-status~="ready"]:hover,
  3948.     [\mpiv-status~="large"]:hover {
  3949.       cursor: zoom-in;
  3950.     }
  3951.     [\mpiv-status~="shift"]:hover {
  3952.       cursor: default;
  3953.     }
  3954.   `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3955.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3956.   return App.globalStyle;
  3957. }
  3958.  
  3959. //#region Global utilities
  3960.  
  3961. const clamp = (v, min, max) =>
  3962.   v < min ? min : v > max ? max : v;
  3963.  
  3964. const compareNumbers = (a, b) =>
  3965.   a - b;
  3966.  
  3967. const flattenHtml = str =>
  3968.   str.trim().replace(/\n\s*/g, '');
  3969.  
  3970. const dropEvent = e =>
  3971.   (e.preventDefault(), e.stopPropagation());
  3972.  
  3973. const ensureArray = v =>
  3974.   Array.isArray(v) ? v : [v];
  3975.  
  3976. /** @param {KeyboardEvent} e */
  3977. const eventModifiers = e =>
  3978.   (e.altKey ? '!' : '') +
  3979.   (e.ctrlKey ? '^' : '') +
  3980.   (e.metaKey ? '#' : '') +
  3981.   (e.shiftKey ? '+' : '');
  3982.  
  3983. /** @param {KeyboardEvent} e */
  3984. const describeKey = e => eventModifiers(e) + (e.key && e.key.length > 1 ? e.key : e.code);
  3985.  
  3986. const isFunction = val => typeof val === 'function';
  3987.  
  3988. const isVideo = el => el && el.tagName === 'VIDEO';
  3989.  
  3990. const now = performance.now.bind(performance);
  3991.  
  3992. const sumProps = (...props) => {
  3993.   let sum = 0;
  3994.   for (const p of props)
  3995.     sum += parseFloat(p) || 0;
  3996.   return sum;
  3997. };
  3998.  
  3999. const tryCatch = function (fn, ...args) {
  4000.   try {
  4001.     return fn.apply(this, args);
  4002.   } catch (e) {}
  4003. };
  4004.  
  4005. const tryJSON = str =>
  4006.   tryCatch(JSON.parse, str);
  4007.  
  4008. const pick = (obj, path, fn) => (
  4009.   obj = path.split(/[[.]/).reduce((res, k) => res && res[k.endsWith(']') ? k.slice(0, -1) : k], obj)
  4010. ) && (fn ? fn(obj) : obj);
  4011.  
  4012. const $ = (sel, node = doc) =>
  4013.   node.querySelector(sel) || false;
  4014.  
  4015. const $$ = (sel, node = doc) =>
  4016.   node.querySelectorAll(sel);
  4017.  
  4018. const $new = (sel, props, children) => {
  4019.   if (typeof sel !== 'string') {
  4020.     children = props;
  4021.     props = sel;
  4022.     sel = '';
  4023.   }
  4024.   if (!children && props != null && ({}).toString.call(props) !== '[object Object]') {
  4025.     children = props;
  4026.     props = null;
  4027.   }
  4028.   const isFrag = sel === 'fragment';
  4029.   const [, tag, id, cls] = sel.match(/^(\w*)(?:#([^.]+))?(?:\.(.+))?$/);
  4030.   const el = isFrag ? doc.createDocumentFragment() : doc.createElement(tag || 'div');
  4031.   if (id) el.id = id;
  4032.   if (cls) el.className = cls.replace(/\./g, ' ');
  4033.   if (props) {
  4034.     for (const [k, v] of Object.entries(props)) {
  4035.       if (!k.startsWith('data-')) {
  4036.         el[k] = v;
  4037.       } else if (v != null) {
  4038.         el.setAttribute(k, v);
  4039.       }
  4040.     }
  4041.   }
  4042.   if (children != null) {
  4043.     if (Array.isArray(children))
  4044.       el.append(...children.filter(Boolean));
  4045.     else if (children instanceof Node)
  4046.       el.appendChild(children);
  4047.     else
  4048.       el.textContent = children;
  4049.   }
  4050.   return el;
  4051. };
  4052.  
  4053. const $css = (el, props) =>
  4054.   Object.entries(props).forEach(([k, v]) =>
  4055.     el.style.setProperty(k, v, 'important'));
  4056.  
  4057. const $parseHtml = str =>
  4058.   new DOMParser().parseFromString(str, 'text/html');
  4059.  
  4060. const $many = (q, doc) => {
  4061.   for (const selector of ensureArray(q)) {
  4062.     const el = selector && $(selector, doc);
  4063.     if (el)
  4064.       return el;
  4065.   }
  4066. };
  4067.  
  4068. const $prop = (sel, prop, node = doc) =>
  4069.   (node = $(sel, node)) && node[prop] || '';
  4070.  
  4071. const $propUp = (node, prop) =>
  4072.   (node = node.closest(`[${prop}]`)) &&
  4073.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  4074.   '';
  4075.  
  4076. const $remove = node =>
  4077.   node && node.remove();
  4078.  
  4079. //#endregion
  4080. //#region Init
  4081.  
  4082. nonce = ($('script[nonce]') || {}).nonce || '';
  4083.  
  4084. Config.load({save: true}).then(res => {
  4085.   cfg = res;
  4086.   if (Menu) Menu.register();
  4087.  
  4088.   if (doc.body) App.checkImageTab();
  4089.   else addEventListener('DOMContentLoaded', App.checkImageTab, {once: true});
  4090.  
  4091.   addEventListener('mouseover', Events.onMouseOver, true);
  4092.   addEventListener('contextmenu', Events.onContext, true);
  4093.   addEventListener('keydown', Events.onKeyDown, true);
  4094.   addEventListener('visibilitychange', Events.onVisibility, true);
  4095.   addEventListener('blur', Events.onVisibility, true);
  4096.   if (['greasyfork.org', 'github.com'].includes(hostname))
  4097.     addEventListener('click', setupClickedRule, true);
  4098.   addEventListener('message', App.onMessage, true);
  4099. });
  4100.  
  4101. //#endregion