☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

当前为 2022-03-02 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        Mouseover Popup Image Viewer
  3. // @namespace   https://github.com/tophf
  4. // @description Shows images and videos behind links and thumbnails.
  5. //
  6. // @include     *
  7. //
  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     1.2.22
  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.     if (elSetup) console.info({node, rule, url, match});
  136.     if (ai.node) App.deactivate();
  137.     ai = info;
  138.     ai.force = event.ctrlKey;
  139.     ai.gNum = 0;
  140.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  141.     Util.suppressTooltip();
  142.     Calc.updateViewSize();
  143.     Events.toggle(true);
  144.     Events.trackMouse(event);
  145.     if (ai.force) {
  146.       App.start();
  147.     } else if (cfg.start === 'auto' && !rule.manual) {
  148.       App.belate();
  149.     } else {
  150.       Status.set('ready');
  151.     }
  152.   },
  153.  
  154.   belate() {
  155.     if (cfg.preload) {
  156.       ai.preloadStart = now();
  157.       App.start();
  158.       Status.set('+preloading');
  159.       setTimeout(Status.set, cfg.delay, '-preloading');
  160.     } else {
  161.       ai.timer = setTimeout(App.start, cfg.delay);
  162.     }
  163.   },
  164.  
  165.   checkImageTab() {
  166.     const el = doc.body.firstElementChild;
  167.     App.isImageTab = el && el === doc.body.lastElementChild && el.matches('img, video');
  168.     App.isEnabled = cfg.imgtab || !App.isImageTab;
  169.   },
  170.  
  171.   checkProgress({start} = {}) {
  172.     const p = ai.popup;
  173.     if (!p)
  174.       return;
  175.     const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  176.     const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  177.     if (h)
  178.       return App.canCommit(w, h);
  179.     if (start) {
  180.       clearInterval(ai.timerProgress);
  181.       ai.timerProgress = setInterval(App.checkProgress, 150);
  182.     }
  183.   },
  184.  
  185.   canCloseVid() {
  186.     return !ai || !ai.popup || !isVideo(ai.popup) || !cfg.keepVids;
  187.   },
  188.  
  189.   canCommit(w, h) {
  190.     if (!ai.force && ai.rect && !ai.gItems &&
  191.         Math.max(w / (ai.rect.width || 1), h / (ai.rect.height || 1)) < cfg.scale) {
  192.       App.deactivate();
  193.       return false;
  194.     }
  195.     App.stopTimers();
  196.     const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  197.     if (wait > 0) {
  198.       ai.timer = setTimeout(App.checkProgress, wait);
  199.     } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  200.       App.handleError({type: 'error'});
  201.     } else {
  202.       App.commit();
  203.     }
  204.     return true;
  205.   },
  206.  
  207.   async commit() {
  208.     const p = ai.popup;
  209.     const isDecoded = cfg.waitLoad && isFunction(p.decode);
  210.     if (isDecoded) {
  211.       await p.decode();
  212.       if (p !== ai.popup)
  213.         return;
  214.     }
  215.     App.updateStyles();
  216.     Calc.measurePopup();
  217.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  218.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  219.     if (willMove)
  220.       Popup.move();
  221.     Bar.updateName();
  222.     Bar.updateDetails();
  223.     Status.set(!ai.popupLoaded && 'loading');
  224.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  225.                ai.nheight > p.clientHeight + ai.extras.h;
  226.     if (ai.large) {
  227.       Status.set('+large');
  228.       // prevent a blank bg+border in FF
  229.       if (isFF && p.complete && !isDecoded)
  230.         p.style.backgroundImage = `url('${p.src}')`;
  231.     }
  232.   },
  233.  
  234.   deactivate({wait} = {}) {
  235.     App.stopTimers();
  236.     if (ai.req)
  237.       tryCatch.call(ai.req, ai.req.abort);
  238.     if (ai.tooltip)
  239.       ai.tooltip.node.title = ai.tooltip.text;
  240.     Status.set(false);
  241.     Bar.set(false);
  242.     Events.toggle(false);
  243.     Popup.destroy();
  244.     if (wait) {
  245.       App.isEnabled = false;
  246.       setTimeout(App.enable, 200);
  247.     }
  248.     ai = {rule: {}};
  249.   },
  250.  
  251.   enable() {
  252.     App.isEnabled = true;
  253.   },
  254.  
  255.   handleError(e, rule = ai.rule) {
  256.     if (rule && rule.onerror === 'skip')
  257.       return;
  258.     if (ai.imageUrl &&
  259.         !ai.xhr &&
  260.         !ai.imageUrl.startsWith(location.origin + '/') &&
  261.         location.protocol === 'https:' &&
  262.         CspSniffer.init) {
  263.       Popup.create(ai.imageUrl, ai.pageUrl, e);
  264.       return;
  265.     }
  266.     const fe = Util.formatError(e, rule);
  267.     if (!rule || !ai.urls || !ai.urls.length)
  268.       console.warn(fe.consoleFormat, ...fe.consoleArgs);
  269.     if (ai.urls && ai.urls.length) {
  270.       ai.url = ai.urls.shift();
  271.       if (ai.url) {
  272.         App.stopTimers();
  273.         App.startSingle();
  274.       } else {
  275.         App.deactivate();
  276.       }
  277.     } else if (ai.node) {
  278.       Status.set('error');
  279.       Bar.set(fe.message, 'error');
  280.     }
  281.   },
  282.  
  283.   /** @param {MessageEvent} e */
  284.   onMessage(e) {
  285.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  286.       e.stopImmediatePropagation();
  287.       for (const el of doc.getElementsByTagName('iframe')) {
  288.         if (el.contentWindow === e.source) {
  289.           const s = Calc.frameSize(el, window).join(':');
  290.           e.source.postMessage(`${MSG.viewSize}:${s}`, '*');
  291.           return;
  292.         }
  293.       }
  294.     }
  295.   },
  296.  
  297.   /** @param {MessageEvent} e */
  298.   onMessageChild(e) {
  299.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  300.       e.stopImmediatePropagation();
  301.       removeEventListener('message', App.onMessageChild, true);
  302.       const [w, h, x, y] = e.data.split(':').slice(1).map(parseFloat);
  303.       if (w && h) ai.view = {w, h, x, y};
  304.     }
  305.   },
  306.  
  307.   start() {
  308.     // check explicitly as the cursor may have moved into an iframe so mouseout wasn't reported
  309.     if (!Util.isHovered(ai.node)) {
  310.       App.deactivate();
  311.       return;
  312.     }
  313.     App.updateStyles();
  314.     if (ai.gallery)
  315.       App.startGallery();
  316.     else
  317.       App.startSingle();
  318.   },
  319.  
  320.   startSingle() {
  321.     Status.loading();
  322.     ai.imageUrl = null;
  323.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  324.       Req.findRedirect();
  325.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  326.       App.startFromQ();
  327.     } else {
  328.       Popup.create(ai.url);
  329.       Ruler.runC();
  330.     }
  331.   },
  332.  
  333.   async startFromQ() {
  334.     try {
  335.       const {responseText, doc, finalUrl} = await Req.getDoc(ai.url);
  336.       const url = Ruler.runQ(responseText, doc, finalUrl);
  337.       if (!url)
  338.         throw 'The "q" rule did not produce any URL.';
  339.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  340.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  341.         if (!info || !info.url)
  342.           throw `Couldn't follow URL: ${url}`;
  343.         Object.assign(ai, info);
  344.         App.startSingle();
  345.       } else {
  346.         Popup.create(url, finalUrl);
  347.         Ruler.runC(responseText, doc);
  348.       }
  349.     } catch (e) {
  350.       App.handleError(e);
  351.     }
  352.   },
  353.  
  354.   async startGallery() {
  355.     Status.loading();
  356.     try {
  357.       const startUrl = ai.url;
  358.       const p = await Req.getDoc(ai.rule.s !== 'gallery' && startUrl);
  359.       const items = await new Promise(resolve => {
  360.         const it = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, ai.node,
  361.           resolve);
  362.         if (Array.isArray(it))
  363.           resolve(it);
  364.       });
  365.       // bail out if the gallery's async callback took too long
  366.       if (ai.url !== startUrl) return;
  367.       ai.gNum = items.length;
  368.       ai.gItems = items.length && items;
  369.       if (ai.gItems) {
  370.         const i = items.index;
  371.         ai.gIndex = i === (i | 0) && items[i] ? i | 0 :
  372.           typeof i === 'string' ? clamp(items.findIndex(x => x.url === i), 0) :
  373.             Gallery.findIndex(ai.url);
  374.         setTimeout(Gallery.next);
  375.       } else {
  376.         throw 'Empty gallery';
  377.       }
  378.     } catch (e) {
  379.       App.handleError(e);
  380.     }
  381.   },
  382.  
  383.   stopTimers() {
  384.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  385.       clearTimeout(ai[timer]);
  386.     clearInterval(ai.timerProgress);
  387.   },
  388.  
  389.   toggleZoom({keepScale} = {}) {
  390.     const p = ai.popup;
  391.     if (!p || !ai.scales || ai.scales.length < 2)
  392.       return;
  393.     ai.zoomed = !ai.zoomed;
  394.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  395.     if (ai.zooming)
  396.       p.classList.add(`${PREFIX}zooming`);
  397.     Popup.move();
  398.     Bar.updateDetails();
  399.     Status.set(ai.zoomed ? 'zoom' : false);
  400.     return ai.zoomed;
  401.   },
  402.  
  403.   updateStyles() {
  404.     Util.addStyle('global', (App.globalStyle || createGlobalStyle()) + cfg._getCss());
  405.     Util.addStyle('rule', ai.rule.css || '');
  406.   },
  407. };
  408.  
  409. const Bar = {
  410.  
  411.   set(label, className) {
  412.     let b = ai.bar;
  413.     if (typeof label !== 'string') {
  414.       $remove(b);
  415.       ai.bar = null;
  416.       return;
  417.     }
  418.     if (!b) b = ai.bar = $new('div', {id: `${PREFIX}bar`});
  419.     App.updateStyles();
  420.     Bar.updateDetails();
  421.     Bar.show();
  422.     b.textContent = '';
  423.     b.innerHTML = TRUSTED.createHTML(label);
  424.     if (!b.parentNode) {
  425.       doc.body.appendChild(b);
  426.       Util.forceLayout(b);
  427.     }
  428.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  429.   },
  430.  
  431.   show(isForced) {
  432.     clearTimeout(ai.timerBar);
  433.     ai.bar.style.removeProperty('opacity');
  434.     if (isForced)
  435.       ai.bar.dataset.force = '';
  436.     else
  437.       ai.timerBar = setTimeout(Bar.hide, 3000);
  438.   },
  439.  
  440.   hide(isForced) {
  441.     if (ai.bar && (isForced || !ai.bar.dataset.force)) {
  442.       $css(ai.bar, {opacity: 0});
  443.       delete ai.bar.dataset.force;
  444.     }
  445.   },
  446.  
  447.   updateName() {
  448.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  449.     if (gi) {
  450.       const item = gi[i];
  451.       const noDesc = !gi.some(_ => _.desc);
  452.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  453.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  454.         item.desc,
  455.       ].filter(Boolean).join(' - ')}`;
  456.       Bar.set(c.trim() || ' ', 'gallery', true);
  457.     } else if ('caption' in ai) {
  458.       Bar.set(ai.caption, 'caption');
  459.     } else if (ai.tooltip) {
  460.       Bar.set(ai.tooltip.text, 'tooltip');
  461.     } else {
  462.       Bar.set(' ', 'info');
  463.     }
  464.   },
  465.  
  466.   updateDetails() {
  467.     if (!ai.bar) return;
  468.     const r = ai.rotate;
  469.     const zoom = ai.nwidth && `${
  470.       Math.round(ai.scale * 100)
  471.     }%${
  472.       ai.flipX || ai.flipY ? `, ${ai.flipX ? '⇆' : ''}${ai.flipY ? '⇅' : ''}` : ''
  473.     }${
  474.       r ? ', ' + (r > 180 ? r - 360 : r) + '°' : ''
  475.     }, ${
  476.       ai.nwidth
  477.     } x ${
  478.       ai.nheight
  479.     } px, ${
  480.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  481.     } MP, ${
  482.       Calc.aspectRatio(ai.nwidth, ai.nheight)
  483.     }`.replace(/\x20/g, '\xA0');
  484.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  485.       if (zoom) ai.bar.dataset.zoom = zoom;
  486.       else delete ai.bar.dataset.zoom;
  487.       Bar.show();
  488.     }
  489.   },
  490. };
  491.  
  492. const Calc = {
  493.  
  494.   aspectRatio(w, h) {
  495.     for (let rat = w / h, a, b = 0; ;) {
  496.       b++;
  497.       a = Math.round(w * b / h);
  498.       if (a > 10 && b > 10 || a > 100 || b > 100)
  499.         return rat.toFixed(2);
  500.       if (Math.abs(a / b - rat) < .01)
  501.         return `${a}:${b}`;
  502.     }
  503.   },
  504.  
  505.   frameSize(elFrame, wnd) {
  506.     if (!elFrame) return;
  507.     const r = elFrame.getBoundingClientRect();
  508.     const w = Math.min(r.right, wnd.innerWidth) - Math.max(r.left, 0);
  509.     const h = Math.min(r.bottom, wnd.innerHeight) - Math.max(r.top, 0);
  510.     const x = r.left < 0 ? -r.left : 0;
  511.     const y = r.top < 0 ? -r.top : 0;
  512.     return [w, h, x, y];
  513.   },
  514.  
  515.   generateScales(fit) {
  516.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  517.     const zoomStep = cfg.zoomStep / 100;
  518.     const arr = [scale];
  519.     if (fit !== 1) {
  520.       const diff = goal / scale;
  521.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  522.       const step = steps && Math.pow(diff, 1 / steps);
  523.       for (let i = steps; --i > 0;)
  524.         arr.push((scale *= step));
  525.       arr.push(scale = goal);
  526.     }
  527.     while ((scale *= zoomStep) <= ZOOM_MAX)
  528.       arr.push(scale);
  529.     return arr;
  530.   },
  531.  
  532.   measurePopup() {
  533.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  534.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  535.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  536.     if (p.clientWidth > nw) {
  537.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  538.       nh = ai.nheight = w / nw * nh | 0;
  539.       nw = ai.nwidth = w;
  540.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  541.     }
  542.     p.className = `${PREFIX}show`;
  543.     p.removeAttribute('style');
  544.     const s = getComputedStyle(p);
  545.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  546.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  547.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  548.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  549.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  550.     ai.extras = {
  551.       inw, inh,
  552.       outw, outh,
  553.       o: o2 / 2,
  554.       w: inw + outw,
  555.       h: inh + outh,
  556.     };
  557.     const fit = Math.min(
  558.       (ai.view.w - ai.extras.w) / ai.nwidth,
  559.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  560.     const isCustom = !cfg.fit && cfg.scales.length;
  561.     let cutoff = Math.min(1, fit);
  562.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  563.     if (isCustom) {
  564.       const dst = [];
  565.       for (const scale of cfg.scales) {
  566.         const val = parseFloat(scale) || fit;
  567.         dst.push(val);
  568.         if (isCustom && typeof scale === 'string') {
  569.           if (scale.includes('!')) cutoff = val;
  570.           if (scale.includes('*')) scaleZoom = val;
  571.         }
  572.       }
  573.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  574.     } else {
  575.       ai.scales = Calc.generateScales(fit);
  576.     }
  577.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  578.     ai.scaleFit = fit;
  579.     ai.scaleZoom = scaleZoom;
  580.   },
  581.  
  582.   rect() {
  583.     let {node, rule} = ai;
  584.     let n = rule.rect && node.closest(rule.rect);
  585.     if (n) return n.getBoundingClientRect();
  586.     const nested = node.getElementsByTagName('*');
  587.     let maxArea = 0;
  588.     let maxBounds;
  589.     n = node;
  590.     for (let i = 0; n; n = nested[i++]) {
  591.       const bounds = n.getBoundingClientRect();
  592.       const area = bounds.width * bounds.height;
  593.       if (area > maxArea) {
  594.         maxArea = area;
  595.         maxBounds = bounds;
  596.         node = n;
  597.       }
  598.     }
  599.     return maxBounds;
  600.   },
  601.  
  602.   scaleBiggerThan(scale, i, arr) {
  603.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  604.   },
  605.  
  606.   scaleIndex(dir) {
  607.     const i = ai.scales.indexOf(ai.scale);
  608.     if (i >= 0) return i + dir;
  609.     for (
  610.       let len = ai.scales.length,
  611.         i = dir > 0 ? 0 : len - 1;
  612.       i >= 0 && i < len;
  613.       i += dir
  614.     ) {
  615.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  616.         return i;
  617.     }
  618.     return -1;
  619.   },
  620.  
  621.   scaleForFirstZoom(keepScale) {
  622.     const z = ai.scaleZoom;
  623.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  624.   },
  625.  
  626.   updateViewSize() {
  627.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  628.     ai.view = {w: view.clientWidth, h: view.clientHeight, x: 0, y: 0};
  629.     if (window === top) return;
  630.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  631.     if (w && h) {
  632.       ai.view = {w, h, x: 0, y: 0};
  633.     } else {
  634.       addEventListener('message', App.onMessageChild, true);
  635.       parent.postMessage(MSG.getViewSize, '*');
  636.     }
  637.   },
  638. };
  639.  
  640. class Config {
  641.  
  642.   constructor({data: c, save}) {
  643.     if (typeof c === 'string')
  644.       c = tryJSON(c);
  645.     if (typeof c !== 'object' || !c)
  646.       c = {};
  647.     const {DEFAULTS} = Config;
  648.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  649.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  650.         '';
  651.     if (c.version !== DEFAULTS.version) {
  652.       if (typeof c.hosts === 'string')
  653.         c.hosts = c.hosts.split('\n')
  654.           .map(s => tryJSON(s) || s)
  655.           .filter(Boolean);
  656.       if (c.close === true || c.close === false)
  657.         c.zoomOut = c.close ? 'auto' : 'stay';
  658.       for (const key in DEFAULTS)
  659.         if (typeof c[key] !== typeof DEFAULTS[key])
  660.           c[key] = DEFAULTS[key];
  661.       if (c.version === 3 && c.scales[0] === 0)
  662.         c.scales[0] = '0!';
  663.       for (const key in c)
  664.         if (!(key in DEFAULTS))
  665.           delete c[key];
  666.       c.version = DEFAULTS.version;
  667.       if (save)
  668.         GM.setValue('cfg', c);
  669.     }
  670.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  671.       App.globalStyle = '';
  672.     if (!Array.isArray(c.scales))
  673.       c.scales = [];
  674.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  675.     Object.assign(this, DEFAULTS, c);
  676.   }
  677.  
  678.   static async load(opts) {
  679.     opts.data = await GM.getValue('cfg');
  680.     return new Config(opts);
  681.   }
  682.  
  683.   _getCss() {
  684.     const {css} = this;
  685.     return css.includes('{') ? css : `#${PREFIX}-popup {${css}}`;
  686.   }
  687. }
  688.  
  689. Config.DEFAULTS = /** @type mpiv.Config */ Object.assign(Object.create(null), {
  690.   center: false,
  691.   css: '',
  692.   delay: 500,
  693.   fit: '',
  694.   globalStatus: false,
  695.   // prefer ' inside rules because " will be displayed as \"
  696.   // example: "img[src*='icon']"
  697.   hosts: [{
  698.     name: 'No popup for YouTube thumbnails',
  699.     d: 'www.youtube.com',
  700.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  701.     s: '',
  702.   }, {
  703.     name: 'No popup for SVG/PNG icons',
  704.     d: '',
  705.     e: "img[src*='icon']",
  706.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  707.     s: '',
  708.   }],
  709.   imgtab: false,
  710.   keepOnBlur: false,
  711.   keepVids: false,
  712.   mute: false,
  713.   preload: false,
  714.   scale: 1.25,
  715.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  716.   start: 'auto',
  717.   startAlt: 'context',
  718.   startAltShown: false,
  719.   uiBackgroundColor: '#ffffff',
  720.   uiBackgroundOpacity: 100,
  721.   uiBorderColor: '#000000',
  722.   uiBorderOpacity: 100,
  723.   uiBorder: 0,
  724.   uiFadein: true,
  725.   uiFadeinGallery: true, // some computers show white background while loading so fading hides it
  726.   uiShadowColor: '#000000',
  727.   uiShadowOpacity: 80,
  728.   uiShadow: 20,
  729.   uiPadding: 0,
  730.   uiMargin: 0,
  731.   version: 6,
  732.   waitLoad: false,
  733.   xhr: true,
  734.   zoom: 'context',
  735.   zoomOut: 'auto',
  736.   zoomStep: 133,
  737. });
  738.  
  739. const CspSniffer = {
  740.  
  741.   /** @type {?Object<string,string[]>} */
  742.   csp: null,
  743.   selfUrl: location.origin + '/',
  744.  
  745.   // will be null when done
  746.   init() {
  747.     this.busy = new Promise(resolve => {
  748.       const xhr = new XMLHttpRequest();
  749.       xhr.open('get', location);
  750.       xhr.timeout = Math.max(2000, (performance.timing.responseEnd - performance.timeOrigin) * 2);
  751.       xhr.onreadystatechange = () => {
  752.         if (xhr.readyState >= xhr.HEADERS_RECEIVED) {
  753.           this.csp = this._parse(xhr.getResponseHeader('content-security-policy'));
  754.           this.init = this.busy = xhr.onreadystatechange = null;
  755.           xhr.abort();
  756.           resolve();
  757.         }
  758.       };
  759.       xhr.send();
  760.     });
  761.   },
  762.  
  763.   async check(url, allowInit) {
  764.     if (allowInit && this.init) this.init();
  765.     if (this.busy) await this.busy;
  766.     const isVideo = Util.isVideoUrl(url);
  767.     let mode;
  768.     if (this.csp) {
  769.       const src = this.csp[isVideo ? 'media' : 'img'];
  770.       if (!src.some(this._srcMatches, url))
  771.         mode = [mode, 'blob', 'data'].find(m => src.includes(`${m}:`));
  772.     }
  773.     return [mode || ai.xhr, isVideo];
  774.   },
  775.  
  776.   _parse(csp) {
  777.     if (!csp) return;
  778.     const src = {};
  779.     const rx = /(?:^|[;,])\s*(?:(default|img|media|script)-src|require-(trusted)-types-for) ([^;,]+)/g;
  780.     for (let m; (m = rx.exec(csp));)
  781.       src[m[1] || m[2]] = m[3].trim().split(/\s+/);
  782.     if ((src.script || []).find(s => /^'nonce-(.+)'$/.test(s)))
  783.       nonce = RegExp.$1;
  784.     if ((src.trusted || []).includes("'script'"))
  785.       App.NOP = () => {};
  786.     if (!src.img) src.img = src.default || [];
  787.     if (!src.media) src.media = src.default || [];
  788.     for (const set of [src.img, src.media]) {
  789.       set.forEach((item, i) => {
  790.         if (item !== '*' && item.includes('*')) {
  791.           set[i] = new RegExp(
  792.             (/^\w+:/.test(item) ? '^' : '^\\w+://') +
  793.             item
  794.             .replace(/[.+?^$|()[\]{}]/g, '\\$&')
  795.             .replace(/(\\\.)?(\*)(\\\.)?/g, (_, a, b, c) =>
  796.               `${a ? '\\.?' : ''}[^:/]*${c ? '\\.?' : ''}`)
  797.             .replace(/[^/]$/, '$&/'));
  798.         }
  799.       });
  800.     }
  801.     return src;
  802.   },
  803.  
  804.   /** @this string */
  805.   _srcMatches(src) {
  806.     return src instanceof RegExp ? src.test(this) :
  807.       src === '*' ||
  808.       src && this.startsWith(src) && (src.endsWith('/') || this[src.length] === '/') ||
  809.       src === "'self'" && this.startsWith(CspSniffer.selfUrl);
  810.   },
  811. };
  812.  
  813. const Events = {
  814.  
  815.   hoverData: null,
  816.   hoverTimer: 0,
  817.   ignoreKeyHeld: false,
  818.  
  819.   onMouseOver(e) {
  820.     let node = e.target;
  821.     Events.ignoreKeyHeld = e.shiftKey;
  822.     if (!App.isEnabled ||
  823.         !App.canCloseVid() ||
  824.         e.shiftKey ||
  825.         ai.zoomed ||
  826.         node === ai.popup ||
  827.         node === doc.body ||
  828.         node === doc.documentElement ||
  829.         node === elSetup ||
  830.         isVideo(node) && !e.ctrlKey ||
  831.         ai.gallery && ai.rectHovered)
  832.       return;
  833.     if (node.shadowRoot)
  834.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  835.     // we don't want to process everything in the path of a quickly moving mouse cursor
  836.     Events.hoverData = {e, node, start: now()};
  837.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  838.   },
  839.  
  840.   onMouseOverThrottled(force) {
  841.     if (!Events.hoverData)
  842.       return;
  843.     const {start, e, node} = Events.hoverData;
  844.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  845.     const wait = force ? 0 : start + SETTLE_TIME - now();
  846.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  847.     if (Events.hoverTimer || !Util.isHovered(node))
  848.       return;
  849.     Events.hoverData = null;
  850.     if (!Ruler.rules)
  851.       Ruler.init();
  852.     const info = RuleMatcher.adaptiveFind(node);
  853.     if (info && info.url && info.node !== ai.node)
  854.       App.activate(info, e);
  855.   },
  856.  
  857.   onMouseOut(e) {
  858.     if (!e.relatedTarget && !cfg.keepOnBlur && !e.shiftKey && App.canCloseVid())
  859.       App.deactivate();
  860.   },
  861.  
  862.   onMouseOutShadow(e) {
  863.     const root = e.target.shadowRoot;
  864.     if (root) {
  865.       root.removeEventListener('mouseover', Events.onMouseOver);
  866.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  867.     }
  868.   },
  869.  
  870.   onMouseMove(e) {
  871.     Events.trackMouse(e);
  872.     if (e.shiftKey)
  873.       return;
  874.     if (!ai.zoomed && !ai.rectHovered && App.canCloseVid()) {
  875.       App.deactivate();
  876.     } else if (ai.zoomed) {
  877.       Popup.move();
  878.       const {cx, cy, view: {w, h}} = ai;
  879.       const bx = w / 6;
  880.       const by = h / 6;
  881.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  882.       Status.set(`${onEdge ? '+' : '-'}edge`);
  883.     }
  884.   },
  885.  
  886.   onMouseDown({shiftKey, button, target}) {
  887.     if (!button && target === ai.popup && ai.popup.controls && (shiftKey || !App.canCloseVid())) {
  888.       ai.controlled = ai.zoomed = true;
  889.     } else if (button === 2 || shiftKey) {
  890.       // Shift = ignore; RMB will be processed in onContext
  891.     } else {
  892.       App.deactivate({wait: true});
  893.       doc.addEventListener('mouseup', App.enable, {once: true});
  894.     }
  895.   },
  896.  
  897.   onMouseScroll(e) {
  898.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  899.     if (ai.zoomed) {
  900.       Events.zoomInOut(dir);
  901.     } else if (ai.gNum > 1 && ai.popup) {
  902.       Gallery.next(-dir);
  903.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  904.       App.toggleZoom();
  905.     } else if (App.canCloseVid()) {
  906.       App.deactivate();
  907.       return;
  908.     }
  909.     dropEvent(e);
  910.   },
  911.  
  912.   onKeyDown(e) {
  913.     // Synthesized events may be of the wrong type and not have a `key`
  914.     const key = eventModifiers(e) + (e.key && e.key.length > 1 ? e.key : e.code);
  915.     const p = ai.popup || false; // simple polyfill for `p?.foo`
  916.     if (!p &&
  917.         !Events.ignoreKeyHeld &&
  918.         key === '^Control' &&
  919.         (cfg.start === 'ctrl' || cfg.start === 'context' || ai.rule.manual)) {
  920.       dropEvent(e);
  921.       if (Events.hoverData) {
  922.         Events.hoverData.e = e;
  923.         Events.onMouseOverThrottled(true);
  924.       }
  925.       if (ai.node) {
  926.         ai.force = true;
  927.         App.start();
  928.       }
  929.     }
  930.     if (!p || e.repeat)
  931.       return;
  932.     switch (key) {
  933.       case '+Shift':
  934.         if (ai.shiftKeyTime)
  935.           return;
  936.         ai.shiftKeyTime = now();
  937.         Status.set('+shift');
  938.         Bar.show(true);
  939.         if (isVideo(p))
  940.           p.controls = true;
  941.         return;
  942.       case 'KeyA':
  943.         if (!p.hasAttribute('data-no-aa'))
  944.           p.setAttribute('data-no-aa', '');
  945.         else
  946.           p.removeAttribute('data-no-aa');
  947.         break;
  948.       case 'ArrowRight':
  949.       case 'KeyJ':
  950.         Gallery.next(1);
  951.         break;
  952.       case 'ArrowLeft':
  953.       case 'KeyK':
  954.         Gallery.next(-1);
  955.         break;
  956.       case 'KeyD':
  957.         Req.saveFile();
  958.         break;
  959.       case 'KeyH': // flip horizontally
  960.       case 'KeyV': // flip vertically
  961.       case 'KeyL': // rotate left
  962.       case 'KeyR': // rotate right
  963.         if (!p)
  964.           return;
  965.         if (key === 'KeyH' || key === 'KeyV') {
  966.           const side = !!(ai.rotate % 180) ^ (key === 'KeyH') ? 'flipX' : 'flipY';
  967.           ai[side] = !ai[side];
  968.         } else {
  969.           ai.rotate = ((ai.rotate || 0) + 90 * (key === 'KeyL' ? -1 : 1) + 360) % 360;
  970.         }
  971.         Bar.updateDetails();
  972.         Popup.move();
  973.         break;
  974.       case 'KeyM':
  975.         if (isVideo(p))
  976.           p.muted = !p.muted;
  977.         break;
  978.       case 'KeyT':
  979.         GM.openInTab(Util.tabFixUrl() || p.src);
  980.         App.deactivate();
  981.         break;
  982.       case 'Minus':
  983.       case 'NumpadSubtract':
  984.         if (ai.zoomed) {
  985.           Events.zoomInOut(-1);
  986.         } else {
  987.           App.toggleZoom();
  988.         }
  989.         break;
  990.       case 'Equal':
  991.       case 'NumpadAdd':
  992.         if (ai.zoomed) {
  993.           Events.zoomInOut(1);
  994.         } else {
  995.           App.toggleZoom();
  996.         }
  997.         break;
  998.       case 'Escape':
  999.         App.deactivate({wait: true});
  1000.         break;
  1001.       case '!Alt':
  1002.         return;
  1003.       default:
  1004.         App.deactivate({wait: true});
  1005.         return;
  1006.     }
  1007.     dropEvent(e);
  1008.   },
  1009.  
  1010.   onKeyUp(e) {
  1011.     if (e.key === 'Shift' && ai.shiftKeyTime) {
  1012.       Status.set('-shift');
  1013.       Bar.hide(true);
  1014.       if ((ai.popup || {}).controls)
  1015.         ai.popup.controls = false;
  1016.       // Chrome doesn't expose events for clicks on video controls so we'll guess
  1017.       if (ai.controlled || !isFF && now() - ai.shiftKeyTime > 500)
  1018.         ai.controlled = false;
  1019.       else if (ai.popup && (ai.zoomed || ai.rectHovered !== false))
  1020.         App.toggleZoom();
  1021.       else
  1022.         App.deactivate({wait: true});
  1023.       ai.shiftKeyTime = 0;
  1024.     }
  1025.   },
  1026.  
  1027.   onContext(e) {
  1028.     if (Events.ignoreKeyHeld)
  1029.       return;
  1030.     const p = ai.popup;
  1031.     if (cfg.zoom === 'context' && p && App.toggleZoom()) {
  1032.       dropEvent(e);
  1033.     } else if (!p && (
  1034.       cfg.start === 'context' ||
  1035.       cfg.start === 'contextMK' ||
  1036.       cfg.start === 'contextM' && (e.button === 2) ||
  1037.       cfg.start === 'contextK' && (e.button !== 2) ||
  1038.       (cfg.start === 'auto' && ai.rule.manual)
  1039.     )) {
  1040.       // right-clicked on an image while the context menu is shown for something else
  1041.       if (!ai.node && !Events.hoverData)
  1042.         Events.onMouseOver(e);
  1043.       Events.onMouseOverThrottled(true);
  1044.       if (ai.node) {
  1045.         ai.force = true;
  1046.         App.start();
  1047.         dropEvent(e);
  1048.       }
  1049.     } else if (p) {
  1050.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  1051.     }
  1052.   },
  1053.  
  1054.   pierceShadow(node, x, y) {
  1055.     for (let root; (root = node.shadowRoot);) {
  1056.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  1057.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  1058.       const inner = root.elementFromPoint(x, y);
  1059.       if (!inner || inner === node)
  1060.         break;
  1061.       node = inner;
  1062.     }
  1063.     return node;
  1064.   },
  1065.  
  1066.   toggle(enable) {
  1067.     const onOff = enable ? 'addEventListener' : 'removeEventListener';
  1068.     const passive = {passive: true, capture: true};
  1069.     window[onOff]('mousemove', Events.onMouseMove, passive);
  1070.     window[onOff]('mouseout', Events.onMouseOut, passive);
  1071.     window[onOff]('mousedown', Events.onMouseDown, passive);
  1072.     window[onOff]('keydown', Events.onKeyDown, true); // override normal page listeners
  1073.     window[onOff]('keyup', Events.onKeyUp, true);
  1074.     window[onOff](WHEEL_EVENT, Events.onMouseScroll, {passive: false});
  1075.   },
  1076.  
  1077.   trackMouse(e) {
  1078.     const cx = ai.cx = e.clientX;
  1079.     const cy = ai.cy = e.clientY;
  1080.     const r = ai.rect || (ai.rect = Calc.rect());
  1081.     ai.rectHovered =
  1082.       cx > r.left - 2 && cx < r.right + 2 &&
  1083.       cy > r.top - 2 && cy < r.bottom + 2;
  1084.   },
  1085.  
  1086.   zoomInOut(dir) {
  1087.     const i = Calc.scaleIndex(dir);
  1088.     const n = ai.scales.length;
  1089.     if (i >= 0 && i < n)
  1090.       ai.scale = ai.scales[i];
  1091.     const zo = cfg.zoomOut;
  1092.     if (i <= 0 && zo !== 'stay') {
  1093.       if (ai.scaleFit < ai.scale * .99) {
  1094.         ai.scales.unshift(ai.scale = ai.scaleFit);
  1095.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  1096.         App.deactivate({wait: true});
  1097.         return;
  1098.       }
  1099.       ai.zoomed = zo !== 'unzoom';
  1100.     } else {
  1101.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  1102.     }
  1103.     if (ai.zooming)
  1104.       ai.popup.classList.add(`${PREFIX}zooming`);
  1105.     Popup.move();
  1106.     Bar.updateDetails();
  1107.   },
  1108. };
  1109.  
  1110. const Gallery = {
  1111.  
  1112.   makeParser(g) {
  1113.     return isFunction(g) ? g : Gallery.defaultParser;
  1114.   },
  1115.  
  1116.   findIndex(gUrl) {
  1117.     const sel = gUrl.split('#')[1];
  1118.     if (!sel)
  1119.       return 0;
  1120.     if (/^\d+$/.test(sel))
  1121.       return parseInt(sel);
  1122.     for (let i = ai.gNum; i--;) {
  1123.       let {url} = ai.gItems[i];
  1124.       if (Array.isArray(url))
  1125.         url = url[0];
  1126.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  1127.         return i;
  1128.     }
  1129.     return 0;
  1130.   },
  1131.  
  1132.   next(dir) {
  1133.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  1134.     const item = ai.gItems[ai.gIndex];
  1135.     if (Array.isArray(item.url)) {
  1136.       ai.urls = item.url.slice(1);
  1137.       ai.url = item.url[0];
  1138.     } else {
  1139.       ai.urls = null;
  1140.       ai.url = item.url;
  1141.     }
  1142.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir || 1)].url)[0];
  1143.     App.startSingle();
  1144.     Bar.updateName();
  1145.   },
  1146.  
  1147.   nextIndex(dir) {
  1148.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  1149.   },
  1150.  
  1151.   defaultParser(text, doc, docUrl, m, rule) {
  1152.     const {g} = rule;
  1153.     const qEntry = g.entry;
  1154.     const qCaption = ensureArray(g.caption);
  1155.     const qImage = g.image || 'img';
  1156.     const qTitle = g.title;
  1157.     const fix =
  1158.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  1159.       (s => s.trim());
  1160.     const items = [...$$(qEntry || qImage, doc)]
  1161.       .map(processEntry)
  1162.       .filter(Boolean);
  1163.     items.title = processTitle();
  1164.     items.index =
  1165.       typeof g.index === 'string' &&
  1166.         Req.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  1167.       RX_HAS_CODE.test(g.index) &&
  1168.         Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  1169.       g.index;
  1170.     return items;
  1171.  
  1172.     function processEntry(entry) {
  1173.       const item = {};
  1174.       try {
  1175.         const img = qEntry ? $(qImage, entry) : entry;
  1176.         item.url = fix(Req.findImageUrl(img, docUrl), true);
  1177.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  1178.       } catch (e) {}
  1179.       return item.url && item;
  1180.     }
  1181.  
  1182.     function processCaption(selector) {
  1183.       const el = $(selector, this) ||
  1184.                  $orSelf(selector, this.previousElementSibling) ||
  1185.                  $orSelf(selector, this.nextElementSibling);
  1186.       return el && fix(el.textContent);
  1187.     }
  1188.  
  1189.     function processTitle() {
  1190.       const el = $(qTitle, doc);
  1191.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  1192.     }
  1193.  
  1194.     function $orSelf(selector, el) {
  1195.       if (el && !el.matches(qEntry))
  1196.         return el.matches(selector) ? el : $(selector, el);
  1197.     }
  1198.   },
  1199. };
  1200.  
  1201. const Menu = window === top && GM.registerMenuCommand && {
  1202.   curAltName: '',
  1203.   unreg: GM.unregisterMenuCommand,
  1204.   makeAltName: () => Menu.unreg
  1205.     ? `MPIV: auto-start is ${cfg.start === 'auto' ? 'ON' : 'OFF'}`
  1206.     : 'MPIV: toggle auto-start',
  1207.   register() {
  1208.     GM.registerMenuCommand('MPIV: configure', setup);
  1209.     Menu.registerAlt();
  1210.   },
  1211.   registerAlt() {
  1212.     if (cfg.startAltShown) {
  1213.       Menu.curAltName = Menu.makeAltName();
  1214.       GM.registerMenuCommand(Menu.curAltName, Menu.onAltToggled);
  1215.     }
  1216.   },
  1217.   reRegisterAlt() {
  1218.     const old = Menu.curAltName;
  1219.     if (old && Menu.unreg) Menu.unreg(old);
  1220.     if (!old || Menu.unreg) Menu.registerAlt();
  1221.   },
  1222.   onAltToggled() {
  1223.     const wasAuto = cfg.start === 'auto';
  1224.     if (wasAuto) {
  1225.       cfg.start = cfg.startAlt || (cfg.startAlt = 'context');
  1226.     } else {
  1227.       cfg.startAlt = cfg.start;
  1228.       cfg.start = 'auto';
  1229.     }
  1230.     Menu.reRegisterAlt();
  1231.   },
  1232. };
  1233.  
  1234. const Popup = {
  1235.  
  1236.   async create(src, pageUrl, error) {
  1237.     const inGallery = !cfg.uiFadeinGallery && ai.gItems && ai.popup && !ai.zooming &&
  1238.       (ai.popup.dataset.galleryFlip = '') === '';
  1239.     Popup.destroy();
  1240.     ai.imageUrl = src;
  1241.     if (!src)
  1242.       return;
  1243.     const myAi = ai;
  1244.     let [xhr, isVideo] = await CspSniffer.check(src, error);
  1245.     if (ai !== myAi)
  1246.       return;
  1247.     if (!xhr && error) {
  1248.       App.handleError(error);
  1249.       return;
  1250.     }
  1251.     Object.assign(ai, {pageUrl, xhr});
  1252.     if (xhr)
  1253.       [src, isVideo] = await Req.getImage(src, pageUrl, xhr).catch(App.handleError) || [];
  1254.     if (ai !== myAi || !src)
  1255.       return;
  1256.     const p = ai.popup = isVideo ? await PopupVideo.create() : $new('img');
  1257.     p.id = `${PREFIX}popup`;
  1258.     p.src = src;
  1259.     p.addEventListener('error', App.handleError);
  1260.     if (ai.zooming)
  1261.       p.addEventListener('transitionend', Popup.onZoom);
  1262.     if (inGallery) {
  1263.       p.dataset.galleryFlip = '';
  1264.       p.setAttribute('loaded', '');
  1265.     }
  1266.     doc.body.insertBefore(p, ai.bar || undefined);
  1267.     await 0;
  1268.     if (App.checkProgress({start: true}) === false)
  1269.       return;
  1270.     if (p.complete)
  1271.       Popup.onLoad.call(ai.popup);
  1272.     else if (!isVideo)
  1273.       p.addEventListener('load', Popup.onLoad, {once: true});
  1274.   },
  1275.  
  1276.   destroy() {
  1277.     const p = ai.popup;
  1278.     if (!p) return;
  1279.     p.removeEventListener('load', Popup.onLoad);
  1280.     p.removeEventListener('error', App.handleError);
  1281.     if (isFunction(p.pause))
  1282.       p.pause();
  1283.     if (ai.blobUrl)
  1284.       setTimeout(URL.revokeObjectURL, SETTLE_TIME, ai.blobUrl);
  1285.     p.remove();
  1286.     ai.zoomed = ai.popup = ai.popupLoaded = ai.blobUrl = null;
  1287.   },
  1288.  
  1289.   move() {
  1290.     let x, y;
  1291.     const {cx, cy, extras, view} = ai;
  1292.     const vw = view.w - extras.outw;
  1293.     const vh = view.h - extras.outh;
  1294.     const w0 = ai.scale * ai.nwidth + extras.inw;
  1295.     const h0 = ai.scale * ai.nheight + extras.inh;
  1296.     const isSwapped = ai.rotate % 180;
  1297.     const w = isSwapped ? h0 : w0;
  1298.     const h = isSwapped ? w0 : h0;
  1299.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  1300.       const r = ai.rect;
  1301.       const rx = (r.left + r.right) / 2;
  1302.       const ry = (r.top + r.bottom) / 2;
  1303.       if (vw - r.right - 40 > w || w < r.left - 40) {
  1304.         if (h < vh - 60)
  1305.           y = clamp(ry - h / 2, 30, vh - h - 30);
  1306.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  1307.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  1308.         if (w < vw - 60)
  1309.           x = clamp(rx - w / 2, 30, vw - w - 30);
  1310.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  1311.       }
  1312.     }
  1313.     if (x == null) {
  1314.       x = vw > w
  1315.         ? (vw - w) / 2 + view.x
  1316.         : (vw - w) * clamp(5 / 3 * ((cx - view.x) / vw - .2), 0, 1);
  1317.     }
  1318.     if (y == null) {
  1319.       y = vh > h
  1320.         ? (vh - h) / 2 + view.y
  1321.         : (vh - h) * clamp(5 / 3 * ((cy - view.y) / vh - .2), 0, 1);
  1322.     }
  1323.     const diff = isSwapped ? (w0 - h0) / 2 : 0;
  1324.     x += extras.o - diff;
  1325.     y += extras.o + diff;
  1326.     $css(ai.popup, {
  1327.       transform: `translate(${Math.round(x)}px, ${Math.round(y)}px) ` +
  1328.                  `rotate(${ai.rotate || 0}deg) ` +
  1329.                  `scale(${ai.flipX ? -1 : 1},${ai.flipY ? -1 : 1})`,
  1330.       width: `${Math.round(w0)}px`,
  1331.       height: `${Math.round(h0)}px`,
  1332.     });
  1333.   },
  1334.  
  1335.   onLoad() {
  1336.     if (this === ai.popup) {
  1337.       this.setAttribute('loaded', '');
  1338.       ai.popupLoaded = true;
  1339.       Status.set('-loading');
  1340.       if (ai.preloadUrl) {
  1341.         $new('img', {src: ai.preloadUrl});
  1342.         ai.preloadUrl = null;
  1343.       }
  1344.     }
  1345.   },
  1346.  
  1347.   onZoom() {
  1348.     this.classList.remove(`${PREFIX}zooming`);
  1349.   },
  1350. };
  1351.  
  1352. const PopupVideo = {
  1353.   async create() {
  1354.     ai.bufBar = false;
  1355.     ai.bufStart = now();
  1356.     return $new('video', {
  1357.       autoplay: true,
  1358.       controls: true,
  1359.       muted: cfg.mute || new AudioContext().state === 'suspended',
  1360.       loop: true,
  1361.       volume: clamp(+await GM.getValue('volume') || .5, 0, 1),
  1362.       onprogress: PopupVideo.progress,
  1363.       oncanplaythrough: PopupVideo.progressDone,
  1364.       onvolumechange: PopupVideo.rememberVolume,
  1365.     });
  1366.   },
  1367.  
  1368.   progress() {
  1369.     const {duration} = this;
  1370.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1371.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1372.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1373.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1374.     }
  1375.   },
  1376.  
  1377.   progressDone() {
  1378.     this.onprogress = this.oncanplaythrough = null;
  1379.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1380.       Bar.set(false);
  1381.     Popup.onLoad.call(this);
  1382.   },
  1383.  
  1384.   rememberVolume() {
  1385.     GM.setValue('volume', this.volume);
  1386.   },
  1387. };
  1388.  
  1389. const Ruler = {
  1390. /*
  1391.  'u' works only with URLs so it's ignored if 'html' is true
  1392.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1393.    |foo = url or text must start with foo
  1394.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1395.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1396.  'r' is checked only if 'u' matches first
  1397. */
  1398.   init() {
  1399.     const errors = new Map();
  1400.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1401.     const hasGMAE = typeof GM_addElement === 'function';
  1402.     const canEval = nonce || hasGMAE;
  1403.     const evalId = canEval && `${GM_info.script.name}${Math.random()}`;
  1404.     const evalRules = [];
  1405.     const evalCode = [`window[${JSON.stringify(evalId)}]=[`];
  1406.     for (const [rule, err] of errors.entries()) {
  1407.       if (!RX_EVAL_BLOCKED.test(err)) {
  1408.         App.handleError('Invalid custom host rule:', rule);
  1409.         continue;
  1410.       }
  1411.       if (canEval) {
  1412.         evalCode.push(evalRules.length ? ',' : '',
  1413.           '[', customRules.indexOf(rule), ',{',
  1414.           ...Object.keys(FN_ARGS)
  1415.             .map(k => RX_HAS_CODE.test(rule[k]) && `${k}(${FN_ARGS[k]}){${rule[k]}},`)
  1416.             .filter(Boolean),
  1417.           '}]');
  1418.       }
  1419.       evalRules.push(rule);
  1420.     }
  1421.     if (evalRules.length) {
  1422.       let result, wnd;
  1423.       if (canEval) {
  1424.         const GMAE = hasGMAE
  1425.           ? GM_addElement // eslint-disable-line no-undef
  1426.           : (tag, {textContent}) => document.head.appendChild(
  1427.             Object.assign(document.createElement(tag), {
  1428.               textContent: TRUSTED.createScript(textContent),
  1429.               nonce,
  1430.             }));
  1431.         evalCode.push(']; document.currentScript.remove();');
  1432.         GMAE('script', {textContent: evalCode.join('')});
  1433.         result = (wnd = unsafeWindow)[evalId] ||
  1434.           isFF && (wnd = wnd.wrappedJSObject)[evalId];
  1435.       }
  1436.       if (result) {
  1437.         for (const [index, fns] of result) {
  1438.           Object.assign(customRules[index], fns);
  1439.         }
  1440.         delete wnd[evalId];
  1441.       } else {
  1442.         console.warn('Site forbids compiling JS code in these custom rules', evalRules);
  1443.       }
  1444.     }
  1445.  
  1446.     // rules that disable previewing
  1447.     /** @type mpiv.HostRule[] */
  1448.     const disablers = [
  1449.       dotDomain.endsWith('.stackoverflow.com') && {
  1450.         e: '.post-tag, .post-tag img',
  1451.         s: '',
  1452.       },
  1453.     ];
  1454.  
  1455.     // optimization: a rule is created only when on domain
  1456.     /** @type mpiv.HostRule[] */
  1457.     const perDomain = [
  1458.       hostname.includes('startpage') && {
  1459.         r: /\boiu=(.+)/,
  1460.         s: '$1',
  1461.         follow: true,
  1462.       },
  1463.       dotDomain.endsWith('.4chan.org') && {
  1464.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1465.         q: '.op .fileText a',
  1466.         css: '#post-preview{display:none}',
  1467.       },
  1468.       hostname.includes('amazon.') && {
  1469.         r: /.+?images\/I\/.+?\./,
  1470.         s: m => {
  1471.           const uh = doc.getElementById('universal-hover');
  1472.           return uh ? '' : m[0] + 'jpg';
  1473.         },
  1474.         css: '#zoomWindow{display:none!important;}',
  1475.       },
  1476.       dotDomain.endsWith('.bing.com') && {
  1477.         e: 'a[m*="murl"]',
  1478.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1479.         s: '$1',
  1480.         html: true,
  1481.       },
  1482.       ...dotDomain.endsWith('.deviantart.com') && [{
  1483.         e: '[data-super-full-img] *, img[src*="/th/"]',
  1484.         s: (m, node) =>
  1485.           $propUp(node, 'data-super-full-img') ||
  1486.           (node = node.dataset.embedId && node.nextElementSibling) &&
  1487.           node.dataset.embedId && node.src,
  1488.       }, {
  1489.         e: '.dev-view-deviation img',
  1490.         s: () => [
  1491.           $('.dev-page-download').href,
  1492.           $('.dev-content-full').src,
  1493.         ].filter(Boolean),
  1494.       }, {
  1495.         e: 'a[data-hook=deviation_link]',
  1496.         q: 'link[as=image]',
  1497.       }] || [],
  1498.       dotDomain.endsWith('.discord.com') && {
  1499.         u: '||discordapp.net/external/',
  1500.         r: /\/https?\/(.+)/,
  1501.         s: '//$1',
  1502.         follow: true,
  1503.       },
  1504.       dotDomain.endsWith('.dropbox.com') && {
  1505.         r: /(.+?&size_mode)=\d+(.*)/,
  1506.         s: '$1=5$2',
  1507.       },
  1508.       dotDomain.endsWith('.facebook.com') && {
  1509.         e: 'a[href*="ref=hovercard"]',
  1510.         s: (m, node) =>
  1511.           'https://www.facebook.com/photo.php?fbid=' +
  1512.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1513.         follow: true,
  1514.       },
  1515.       dotDomain.endsWith('.facebook.com') && {
  1516.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1517.         s: (m, node) =>
  1518.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1519.             decodeURIComponent(m[4]),
  1520.         html: true,
  1521.         follow: true,
  1522.       },
  1523.       dotDomain.endsWith('.flickr.com') &&
  1524.       pick(unsafeWindow, 'YUI_config.flickr.api.site_key') && {
  1525.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1526.         s: m => `https://www.flickr.com/services/rest/?${
  1527.           new URLSearchParams({
  1528.             photo_id: m[1],
  1529.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1530.             method: 'flickr.photos.getSizes',
  1531.             format: 'json',
  1532.             nojsoncallback: 1,
  1533.           }).toString()}`,
  1534.         q: text => JSON.parse(text).sizes.size.pop().source,
  1535.         anonymous: true,
  1536.       },
  1537.       dotDomain.endsWith('.github.com') && {
  1538.         r: new RegExp([
  1539.           /(avatars.+?&s=)\d+/,
  1540.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1541.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1542.         ].map(rx => rx.source).join('|')),
  1543.         s: m => `https://${
  1544.           m[1] ? `${m[1]}460` :
  1545.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1546.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1547.         }`,
  1548.       },
  1549.       isGoogleImages && {
  1550.         e: 'a[href*="imgres?imgurl="] img',
  1551.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1552.         follow: true,
  1553.       },
  1554.       isGoogleImages && {
  1555.         e: '[data-tbnid] a:not([href])',
  1556.         s: (m, a) => {
  1557.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1558.           new MutationObserver((_, mo) => {
  1559.             mo.disconnect();
  1560.             App.isEnabled = true;
  1561.             a.alt = a2.innerText;
  1562.             const {left, top} = a.getBoundingClientRect();
  1563.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1564.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1565.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1566.           a2.dispatchEvent(new MouseEvent('mouseup', {bubbles: true}));
  1567.         },
  1568.       },
  1569.       dotDomain.endsWith('.instagram.com') && {
  1570.         e: 'a[href*="/p/"],' +
  1571.           'article [role="button"][tabindex="0"],' +
  1572.           'article [role="button"][tabindex="0"] div',
  1573.         s: (m, node, rule) => {
  1574.           let data, a, n, img, src;
  1575.           if (location.pathname.startsWith('/p/') || location.pathname.startsWith('/tv/')) {
  1576.             img = $('img[srcset], video', node.parentNode);
  1577.             if (img && (isVideo(img) || parseFloat(img.sizes) > 900))
  1578.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1579.           }
  1580.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1581.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1582.           }
  1583.           const numPics = a && pick(data, 'edge_sidecar_to_children.edges.length') ||
  1584.             a && pick(data, 'carousel_media_count');
  1585.           Ruler.toggle(rule, 'q', data && data.is_video && !data.video_url);
  1586.           Ruler.toggle(rule, 'g', a && (numPics > 1 || /<\w+[^>]+carousel/i.test(a.innerHTML)));
  1587.           rule.follow = !data && !rule.g;
  1588.           rule._data = data;
  1589.           rule._img = img;
  1590.           return (
  1591.             !a && !src ? false :
  1592.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1593.                 data.video_url || data.display_url);
  1594.         },
  1595.         c: (html, doc, node, rule) =>
  1596.           rule._getCaption(rule._data) || (rule._img || 0).alt || '',
  1597.         follow: true,
  1598.         _q: 'meta[property="og:video"]',
  1599.         _g(text, doc, url, m, rule) {
  1600.           const json = tryJSON(text);
  1601.           const media =
  1602.             pick(json, 'graphql.shortcode_media') ||
  1603.             pick(json, 'items[0]');
  1604.           const items =
  1605.             pick(media, 'edge_sidecar_to_children.edges', res => res.map(e => ({
  1606.               url: e.node.video_url || e.node.display_url,
  1607.             }))) ||
  1608.             pick(media, 'carousel_media', res => res.map(e => ({
  1609.               url: pick(e, 'video_versions[0].url') || pick(e, 'image_versions2.candidates[0].url'),
  1610.             })));
  1611.           items.title = rule._getCaption(media) || '';
  1612.           return items;
  1613.         },
  1614.         _getCaption: data => pick(data, 'caption.text') ||
  1615.           pick(data, 'edge_media_to_caption.edges[0].node.text'),
  1616.       },
  1617.       ...dotDomain.endsWith('.reddit.com') && [{
  1618.         u: '||i.reddituploads.com/',
  1619.       }, {
  1620.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1621.         s: (m, node) => $propUp(node, 'data-url'),
  1622.       }, {
  1623.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1624.         s: 'https://i$1',
  1625.       }] || [],
  1626.       dotDomain.endsWith('.tumblr.com') && {
  1627.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1628.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1629.         follow: true,
  1630.       },
  1631.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1632.         e: 'a.media-item, a.js-media-image-link',
  1633.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1634.         follow: true,
  1635.       },
  1636.       dotDomain.endsWith('.twitter.com') && {
  1637.         e: '.grid-tweet > .media-overlay',
  1638.         s: (m, node) => node.previousElementSibling.src,
  1639.         follow: true,
  1640.       },
  1641.     ];
  1642.  
  1643.     /** @type mpiv.HostRule[] */
  1644.     const main = [
  1645.       {
  1646.         r: /[/?=](https?%3A%2F%2F[^&]+)/i,
  1647.         s: '$1',
  1648.         follow: true,
  1649.         onerror: 'skip',
  1650.       },
  1651.       {
  1652.         u: [
  1653.           '||500px.com/photo/',
  1654.           '||cl.ly/',
  1655.           '||cweb-pix.com/',
  1656.           '//ibb.co/',
  1657.           '||imgcredit.xyz/image/',
  1658.         ],
  1659.         r: /\.\w+\/.+/,
  1660.         q: 'meta[property="og:image"]',
  1661.       },
  1662.       {
  1663.         u: 'attachment.php',
  1664.         r: /attachment\.php.+attachmentid/,
  1665.       },
  1666.       {
  1667.         u: '||abload.de/image',
  1668.         q: '#image',
  1669.       },
  1670.       {
  1671.         u: '||deviantart.com/art/',
  1672.         s: (m, node) =>
  1673.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1674.             '' :
  1675.             m.input,
  1676.         q: [
  1677.           '#download-button[href*=".jpg"]',
  1678.           '#download-button[href*=".jpeg"]',
  1679.           '#download-button[href*=".gif"]',
  1680.           '#download-button[href*=".png"]',
  1681.           '#gmi-ResViewSizer_fullimg',
  1682.           'img.dev-content-full',
  1683.         ],
  1684.       },
  1685.       {
  1686.         u: '||dropbox.com/s',
  1687.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1688.         q: (text, doc) =>
  1689.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1690.       },
  1691.       {
  1692.         r: /[./]ebay\.[^/]+\/itm\//,
  1693.         q: text =>
  1694.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1695.             .replace(/~~60_\d+/, '~~60_57'),
  1696.       },
  1697.       {
  1698.         u: '||i.ebayimg.com/',
  1699.         s: (m, node) =>
  1700.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1701.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1702.       },
  1703.       {
  1704.         u: '||fastpic.',
  1705.         e: 'a[href*="fastpic"]',
  1706.         s: m => m[0].replace('http:', 'https:').replace('fastpic.ru', 'fastpic.org'),
  1707.         q: 'img[src*="/big/"]',
  1708.       },
  1709.       {
  1710.         u: '||facebook.com/',
  1711.         r: /photo\.php|[^/]+\/photos\//,
  1712.         s: (m, node) =>
  1713.           node.id === 'fbPhotoImage' ? false :
  1714.             /gradient\.png$/.test(m.input) ? '' :
  1715.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1716.         q: [
  1717.           'div + span > a:first-child:not([href*="tag_faces"])',
  1718.           'div + span > a[href*="tag_faces"] ~ a',
  1719.         ],
  1720.         rect: '#fbProfileCover',
  1721.       },
  1722.       {
  1723.         u: '||fbcdn.',
  1724.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1725.         s: m =>
  1726.           dotDomain.endsWith('.facebook.com') &&
  1727.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1728.           false,
  1729.         manual: true,
  1730.       },
  1731.       {
  1732.         u: ['||fbcdn-', 'fbcdn.net/'],
  1733.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1734.         s: (m, node) => {
  1735.           if (node.id === 'fbPhotoImage') {
  1736.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1737.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1738.           }
  1739.           if (m[4])
  1740.             return false;
  1741.           const pn = node.parentNode;
  1742.           if (pn.outerHTML.includes('/hovercard/'))
  1743.             return '';
  1744.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1745.             return false;
  1746.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1747.         },
  1748.         rect: '.photoWrap',
  1749.       },
  1750.       {
  1751.         u: '||flickr.com/photos/',
  1752.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1753.         s: m =>
  1754.           m.input.indexOf('/sizes/') < 0 ?
  1755.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1756.             false,
  1757.         q: (text, doc) => {
  1758.           const links = $$('.sizes-list a', doc);
  1759.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1760.         },
  1761.         follow: true,
  1762.       },
  1763.       {
  1764.         u: '||flickr.com/photos/',
  1765.         r: /\/sizes\//,
  1766.         q: '#allsizes-photo > img',
  1767.       },
  1768.       {
  1769.         u: '||gfycat.com/',
  1770.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1771.         s: 'https://$1$3',
  1772.         q: 'meta[content$=".webm"], #webmsource, source[src$=".webm"], .actual-gif-image',
  1773.       },
  1774.       {
  1775.         u: [
  1776.           '||googleusercontent.com/proxy',
  1777.           '||googleusercontent.com/gadgets/proxy',
  1778.         ],
  1779.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1780.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1781.       },
  1782.       {
  1783.         u: [
  1784.           '||googleusercontent.com/',
  1785.           '||ggpht.com/',
  1786.         ],
  1787.         s: m => m.input.includes('webcache.') ? '' :
  1788.           m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1789.             .replace(/([&?]sz)?=[-\w]+([&#].*)?/, ''),
  1790.       },
  1791.       {
  1792.         u: '||gravatar.com/',
  1793.         r: /([a-z0-9]{32})/,
  1794.         s: 'https://gravatar.com/avatar/$1?s=200',
  1795.       },
  1796.       {
  1797.         u: '//gyazo.com/',
  1798.         r: /\bgyazo\.com\/\w{32,}(\.\w+)?/,
  1799.         s: (m, _, rule) => Ruler.toggle(rule, 'q', !m[1]) ? m.input : `https://i.${m[0]}`,
  1800.         _q: 'meta[name="twitter:image"]',
  1801.       },
  1802.       {
  1803.         u: '||hostingkartinok.com/show-image.php',
  1804.         q: '.image img',
  1805.       },
  1806.       {
  1807.         u: [
  1808.           '||imagecurl.com/images/',
  1809.           '||imagecurl.com/viewer.php',
  1810.         ],
  1811.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1812.         s: 'https://imagecurl.com/images/$1$2$3',
  1813.       },
  1814.       {
  1815.         u: '||imagebam.com/image/',
  1816.         q: 'meta[property="og:image"]',
  1817.         tabfix: true,
  1818.         xhr: hostname.includes('planetsuzy'),
  1819.       },
  1820.       {
  1821.         u: '||imageban.ru/thumbs',
  1822.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1823.         s: '$1out$2/$3/$4',
  1824.       },
  1825.       {
  1826.         u: [
  1827.           '||imageban.ru/show',
  1828.           '||imageban.net/show',
  1829.           '||ibn.im/',
  1830.         ],
  1831.         q: '#img_main',
  1832.       },
  1833.       {
  1834.         u: '||imageshack.us/img',
  1835.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1836.         s: 'https://$2/download/$1/$3$4',
  1837.       },
  1838.       {
  1839.         u: '||imageshack.us/i/',
  1840.         q: '#share-dl',
  1841.       },
  1842.       {
  1843.         u: '||imageteam.org/img',
  1844.         q: 'img[alt="image"]',
  1845.       },
  1846.       {
  1847.         u: [
  1848.           '||imagetwist.com/',
  1849.           '||imageshimage.com/',
  1850.         ],
  1851.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1852.         q: 'img.pic',
  1853.         xhr: true,
  1854.       },
  1855.       {
  1856.         u: '||imageupper.com/i/',
  1857.         q: '#img',
  1858.         xhr: true,
  1859.       },
  1860.       {
  1861.         u: '||imagevenue.com/',
  1862.         q: 'a[data-toggle="full"] img',
  1863.       },
  1864.       {
  1865.         u: '||imagezilla.net/show/',
  1866.         q: '#photo',
  1867.         xhr: true,
  1868.       },
  1869.       {
  1870.         u: [
  1871.           '||images-na.ssl-images-amazon.com/images/',
  1872.           '||media-imdb.com/images/',
  1873.         ],
  1874.         r: /images\/.+?\.jpg/,
  1875.         s: '/V1\\.?_.+?\\.//g',
  1876.       },
  1877.       {
  1878.         u: '||imgbox.com/',
  1879.         r: /\.com\/([a-z0-9]+)$/i,
  1880.         q: '#img',
  1881.         xhr: hostname !== 'imgbox.com',
  1882.       },
  1883.       {
  1884.         u: '||imgclick.net/',
  1885.         r: /\.net\/(\w+)/,
  1886.         q: 'img.pic',
  1887.         xhr: true,
  1888.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1889.       },
  1890.       {
  1891.         u: '.imgcredit.xyz/',
  1892.         r: /^https?(:.*\.xyz\/\d[\w/]+)\.md(.+)/,
  1893.         s: ['https$1$2', 'https$1.png'],
  1894.       },
  1895.       {
  1896.         u: [
  1897.           '||imgflip.com/i/',
  1898.           '||imgflip.com/gif/',
  1899.         ],
  1900.         r: /\/(i|gif)\/([^/?#]+)/,
  1901.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1902.       },
  1903.       {
  1904.         u: [
  1905.           '||imgur.com/a/',
  1906.           '||imgur.com/gallery/',
  1907.         ],
  1908.         s: 'gallery', // suppressing an unused network request for remote `document`
  1909.         g: async (text, doc, url, m, rule, node, cb) => {
  1910.           let u = `https://imgur.com/ajaxalbums/getimages/${ai.url.split(/[/?#]/)[4]}/hit.json?all=true`;
  1911.           let info = tryJSON((await Req.gmXhr(u)).responseText) || 0;
  1912.           let images = (info.data || 0).images || [];
  1913.           if (!images[0]) {
  1914.             info = (await Req.gmXhr(ai.url)).responseText.match(/postDataJSON=(".*?")<|$/)[1];
  1915.             info = tryJSON(tryJSON(info)) || 0;
  1916.             images = info.media;
  1917.           }
  1918.           const items = [];
  1919.           for (const img of images) {
  1920.             const meta = img.metadata || img;
  1921.             items.push({
  1922.               url: img.url ||
  1923.                 (u = `https://i.imgur.com/${img.hash}`) && (
  1924.                   img.ext === '.gif' && img.animated !== false ?
  1925.                     [`${u}.webm`, `${u}.mp4`, u] :
  1926.                     u + img.ext
  1927.                 ),
  1928.               desc: [meta.title, meta.description].filter(Boolean).join(' - '),
  1929.             });
  1930.           }
  1931.           if (items[0] && info.title && !`${items[0].desc || ''}`.includes(info.title))
  1932.             items.title = info.title;
  1933.           cb(items);
  1934.         },
  1935.         css: '.post > .hover { display:none!important; }',
  1936.       },
  1937.       {
  1938.         u: '||imgur.com/',
  1939.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1940.         s: 'gallery',
  1941.         g: (text, doc, url, m) =>
  1942.           m[2].split(',').map(id => ({
  1943.             url: `https://i.${m[1]}${id}.jpg`,
  1944.           })),
  1945.       },
  1946.       {
  1947.         u: '||imgur.com/',
  1948.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.(mp4|[a-z]+))/i,
  1949.         s: (m, node) => {
  1950.           if (/memegen|random|register|search|signin/.test(m.input))
  1951.             return '';
  1952.           const a = node.closest('a');
  1953.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1954.             return false;
  1955.           // postfixes: huge, large, medium, thumbnail, big square, small square
  1956.           const id = m[3].replace(/(.{7})[hlmtbs]$/, '$1');
  1957.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1958.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1959.           return ext === 'webm' ?
  1960.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1961.             u + ext;
  1962.         },
  1963.       },
  1964.       {
  1965.         u: [
  1966.           '||instagr.am/p/',
  1967.           '||instagram.com/p/',
  1968.           '||instagram.com/tv/',
  1969.         ],
  1970.         s: m => m.input.substr(0, m.input.lastIndexOf('/')).replace('/liked_by', '') + '/?__a=1',
  1971.         q: m => (m = tryJSON(m)) && (
  1972.           m = pick(m, 'graphql.shortcode_media') || pick(m, 'items[0]') || 0
  1973.         ) && (
  1974.           m.video_url ||
  1975.           m.display_url ||
  1976.           pick(m, 'video_versions[0].url') ||
  1977.           pick(m, 'carousel_media[0].image_versions2.candidates[0].url') ||
  1978.           pick(m, 'image_versions2.candidates[0].url')
  1979.         ),
  1980.         rect: 'div.PhotoGridMediaItem',
  1981.         c: m => (m = tryJSON(m)) && (
  1982.           pick(m, 'items[0].caption.text') ||
  1983.           pick(m, 'graphql.shortcode_media.edge_media_to_caption.edges[0].node.text') ||
  1984.           ''
  1985.         ),
  1986.       },
  1987.       {
  1988.         u: [
  1989.           '||livememe.com/',
  1990.           '||lvme.me/',
  1991.         ],
  1992.         r: /\.\w+\/([^.]+)$/,
  1993.         s: 'http://i.lvme.me/$1.jpg',
  1994.       },
  1995.       {
  1996.         u: '||lostpic.net/image',
  1997.         q: '.image-viewer-image img',
  1998.       },
  1999.       {
  2000.         u: '||makeameme.org/meme/',
  2001.         r: /\/meme\/([^/?#]+)/,
  2002.         s: 'https://media.makeameme.org/created/$1.jpg',
  2003.       },
  2004.       {
  2005.         u: '||photobucket.com/',
  2006.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  2007.         s: 'https://i$1$3',
  2008.         xhr: !dotDomain.endsWith('.photobucket.com'),
  2009.       },
  2010.       {
  2011.         u: '||piccy.info/view3/',
  2012.         r: /(.+?\/view3)\/(.*)\//,
  2013.         s: '$1/$2/orig/',
  2014.         q: '#mainim',
  2015.       },
  2016.       {
  2017.         u: '||pimpandhost.com/image/',
  2018.         r: /(.+?\/image\/[0-9]+)/,
  2019.         s: '$1?size=original',
  2020.         q: 'img.original',
  2021.       },
  2022.       {
  2023.         u: [
  2024.           '||pixroute.com/',
  2025.           '||imgspice.com/',
  2026.         ],
  2027.         r: /\.html$/,
  2028.         q: 'img[id]',
  2029.         xhr: true,
  2030.       },
  2031.       {
  2032.         u: '||postima',
  2033.         r: /postima?ge?\.org\/image\/\w+/,
  2034.         q: [
  2035.           'a[href*="dl="]',
  2036.           '#main-image',
  2037.         ],
  2038.       },
  2039.       {
  2040.         u: [
  2041.           '||prntscr.com/',
  2042.           '||prnt.sc/',
  2043.         ],
  2044.         r: /\.\w+\/.+/,
  2045.         q: 'meta[property="og:image"]',
  2046.         xhr: true,
  2047.       },
  2048.       {
  2049.         u: '||radikal.ru/',
  2050.         r: /\.ru\/(fp|.+?\.html)|^(.+?)t\.jpg/,
  2051.         s: (m, node, rule) =>
  2052.           m[2] && /radikal\.ru[\w%/]+?(\.\w+)/.test($propUp(node, 'href')) ? m[2] + RegExp.$1 :
  2053.             Ruler.toggle(rule, 'q', m[1]) ? m.input : [m[2] + '.jpg', m[2] + '.png'],
  2054.         _q: text => text.match(/https?:\/\/\w+\.radikal\.ru[\w/]+\.(jpg|gif|png)/i)[0],
  2055.       },
  2056.       {
  2057.         u: '||tumblr.com',
  2058.         r: /_500\.jpg/,
  2059.         s: ['/_500/_1280/', ''],
  2060.       },
  2061.       {
  2062.         u: '||twimg.com/media/',
  2063.         r: /.+?format=(jpe?g|png|gif)/i,
  2064.         s: '$0&name=orig',
  2065.       },
  2066.       {
  2067.         u: '||twimg.com/media/',
  2068.         r: /.+?\.(jpe?g|png|gif)/i,
  2069.         s: '$0:orig',
  2070.       },
  2071.       {
  2072.         u: '||twimg.com/1/proxy',
  2073.         r: /t=([^&_]+)/i,
  2074.         s: m => atob(m[1]).match(/http.+/),
  2075.       },
  2076.       {
  2077.         u: '||twimg.com/',
  2078.         r: /\/profile_images/i,
  2079.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  2080.       },
  2081.       {
  2082.         u: '||pic.twitter.com/',
  2083.         r: /\.com\/[a-z0-9]+/i,
  2084.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  2085.         follow: true,
  2086.       },
  2087.       {
  2088.         u: '||twitpic.com/',
  2089.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  2090.         s: 'https://twitpic.com/show/large/$2',
  2091.       },
  2092.       {
  2093.         u: '||wiki',
  2094.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  2095.         s: '/\\/thumb(?=\\/)|' +
  2096.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  2097.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  2098.         xhr: !hostname.includes('wiki'),
  2099.       },
  2100.       {
  2101.         u: '||ytimg.com/vi/',
  2102.         r: /(.+?\/vi\/[^/]+)/,
  2103.         s: '$1/0.jpg',
  2104.         rect: '.video-list-item',
  2105.       },
  2106.       {
  2107.         u: '/viewer.php?file=',
  2108.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  2109.         s: '$1/images/$2',
  2110.         xhr: true,
  2111.       },
  2112.       {
  2113.         u: '/thumb_',
  2114.         r: /\/albums.+\/thumb_[^/]/,
  2115.         s: '/thumb_//',
  2116.       },
  2117.       {
  2118.         u: [
  2119.           '.th.jp',
  2120.           '.th.gif',
  2121.           '.th.png',
  2122.         ],
  2123.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  2124.         s: '$1$2',
  2125.         follow: true,
  2126.       },
  2127.       {
  2128.         r: RX_MEDIA_URL,
  2129.       },
  2130.     ];
  2131.  
  2132.     /** @type mpiv.HostRule[] */
  2133.     (Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean))
  2134.       .forEach(rule => {
  2135.         if (Array.isArray(rule.e))
  2136.           rule.e = rule.e.join(',');
  2137.       });
  2138.   },
  2139.  
  2140.   format(rule, {expand} = {}) {
  2141.     const s = Util.stringify(rule, null, ' ');
  2142.     return expand ?
  2143.       /* {"a": ...,
  2144.           "b": ...,
  2145.           "c": ...
  2146.          } */
  2147.       s.replace(/^{\s+/g, '{') :
  2148.       /* {"a": ..., "b": ..., "c": ...} */
  2149.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  2150.   },
  2151.  
  2152.   fromElement(el) {
  2153.     const text = el.textContent.trim();
  2154.     if (text.startsWith('{') &&
  2155.         text.endsWith('}') &&
  2156.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text)) {
  2157.       const rule = tryJSON(text);
  2158.       return rule && Object.keys(rule).some(k => /^[degqrsu]$/.test(k)) && rule;
  2159.     }
  2160.   },
  2161.  
  2162.   isValidE2: ([k, v]) => k.trim() && typeof v === 'string' && v.trim(),
  2163.  
  2164.   /** @returns mpiv.HostRule | Error | false | undefined */
  2165.   parse(rule) {
  2166.     const isBatchOp = this instanceof Map;
  2167.     try {
  2168.       if (typeof rule === 'string')
  2169.         rule = JSON.parse(rule);
  2170.       if ('d' in rule && typeof rule.d !== 'string')
  2171.         rule.d = undefined;
  2172.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  2173.         return false;
  2174.       if ('e' in rule) {
  2175.         let {e} = rule;
  2176.         if (typeof e === 'string') {
  2177.           e = e.trim();
  2178.         } else if (
  2179.           Array.isArray(e) && !e.every((s, i) => typeof s === 'string' && (e[i] = s.trim())) ||
  2180.           e && !Object.entries(e).filter(Ruler.isValidE2).length
  2181.         ) {
  2182.           throw new Error('Invalid syntax for "e". Examples: ' +
  2183.             '"e": ".image" or ' +
  2184.             '"e": [".image1", ".image2"] or ' +
  2185.             '"e": {".parent": ".image"} or ' +
  2186.             '"e": {".parent1": ".image1", ".parent2": ".image2"}');
  2187.         }
  2188.         if (isBatchOp) rule.e = e || undefined;
  2189.       }
  2190.       let compileTo = isBatchOp ? rule : {};
  2191.       if (rule.r)
  2192.         compileTo.r = new RegExp(rule.r, 'i');
  2193.       if (App.NOP)
  2194.         compileTo = {};
  2195.       for (const key of Object.keys(FN_ARGS)) {
  2196.         if (RX_HAS_CODE.test(rule[key])) {
  2197.           const fn = Util.newFunction(...FN_ARGS[key], rule[key]);
  2198.           if (fn !== App.NOP || !isBatchOp) {
  2199.             compileTo[key] = fn;
  2200.           } else if (isBatchOp) {
  2201.             this.set(rule, 'unsafe-eval');
  2202.           }
  2203.         }
  2204.       }
  2205.       return rule;
  2206.     } catch (err) {
  2207.       if (isBatchOp) {
  2208.         this.set(rule, err);
  2209.         return rule;
  2210.       } else {
  2211.         return err;
  2212.       }
  2213.     }
  2214.   },
  2215.  
  2216.   runC(text, doc = document) {
  2217.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  2218.     ai.caption = fn(text, doc);
  2219.   },
  2220.  
  2221.   runCHandler: {
  2222.     function: (text, doc) =>
  2223.       ai.rule.c(text || doc.documentElement.outerHTML, doc, ai.node, ai.rule),
  2224.     string: (text, doc) => {
  2225.       const el = $many(ai.rule.c, doc);
  2226.       return !el ? '' :
  2227.         el.getAttribute('content') ||
  2228.         el.getAttribute('title') ||
  2229.         el.textContent;
  2230.     },
  2231.     default: () =>
  2232.       (ai.tooltip || 0).text ||
  2233.       ai.node.alt ||
  2234.       $propUp(ai.node, 'title') ||
  2235.       Req.getFileName(
  2236.         ai.node.tagName === (ai.popup || 0).tagName
  2237.           ? ai.url
  2238.           : ai.node.src || $propUp(ai.node, 'href')),
  2239.   },
  2240.  
  2241.   runQ(text, doc, docUrl) {
  2242.     let url;
  2243.     if (isFunction(ai.rule.q)) {
  2244.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  2245.       if (Array.isArray(url)) {
  2246.         ai.urls = url.slice(1);
  2247.         url = url[0];
  2248.       }
  2249.     } else {
  2250.       const el = $many(ai.rule.q, doc);
  2251.       url = Req.findImageUrl(el, docUrl);
  2252.     }
  2253.     return url;
  2254.   },
  2255.  
  2256.   /** @returns {?boolean|mpiv.RuleMatchInfo} */
  2257.   runE(rule, node) {
  2258.     const {e} = rule;
  2259.     if (typeof e === 'string')
  2260.       return node.matches(e);
  2261.     let p, img, res, info;
  2262.     for (const selParent in e) {
  2263.       if ((p = node.closest(selParent)) && (img = $(e[selParent], p))) {
  2264.         if (img === node)
  2265.           res = true;
  2266.         else if ((info = RuleMatcher.adaptiveFind(img, {rules: [rule]})))
  2267.           return info;
  2268.       }
  2269.     }
  2270.     return res;
  2271.   },
  2272.  
  2273.   /** @returns {?Array} if falsy then the rule should be skipped */
  2274.   runS(node, rule, m) {
  2275.     let urls = [];
  2276.     for (const s of ensureArray(rule.s))
  2277.       urls.push(
  2278.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  2279.           isFunction(s) ? s(m, node, rule) :
  2280.             s);
  2281.     if (rule.q && urls.length > 1) {
  2282.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  2283.       return;
  2284.     }
  2285.     if (Array.isArray(urls[0]))
  2286.       urls = urls[0];
  2287.     // `false` returned by "s" property means "skip this rule", "" means "stop all rules"
  2288.     return urls[0] !== false && Array.from(new Set(urls), Util.decodeUrl);
  2289.   },
  2290.  
  2291.   /** @returns {boolean} */
  2292.   runU(rule, url) {
  2293.     const u = rule[SYM_U] || (rule[SYM_U] = UrlMatcher(rule.u));
  2294.     return u.fn.call(u.data, url);
  2295.   },
  2296.  
  2297.   substituteSingle(s, m) {
  2298.     if (!m || m.input == null) return s;
  2299.     if (s.startsWith('/') && !s.startsWith('//')) {
  2300.       const mid = s.search(/[^\\]\//) + 1;
  2301.       const end = s.lastIndexOf('/');
  2302.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  2303.       return m.input.replace(re, s.slice(mid + 1, end));
  2304.     }
  2305.     if (m.length && s.includes('$')) {
  2306.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  2307.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  2308.         for (let i = maxLength; i >= 0; i--) {
  2309.           const part = num.slice(0, i) | 0;
  2310.           if (part < m.length)
  2311.             return (m[part] || '') + num.slice(i);
  2312.         }
  2313.         return text;
  2314.       });
  2315.     }
  2316.     return s;
  2317.   },
  2318.  
  2319.   toggle(rule, prop, condition) {
  2320.     rule[prop] = condition ? rule[`_${prop}`] : null;
  2321.     return condition;
  2322.   },
  2323. };
  2324.  
  2325. const RuleMatcher = {
  2326.  
  2327.   /** @returns {Object} */
  2328.   adaptiveFind(node, opts) {
  2329.     const tn = node.tagName;
  2330.     const src = node.currentSrc || node.src;
  2331.     const isPic = tn === 'IMG' || tn === 'VIDEO' && Util.isVideoUrlExt(src);
  2332.     let a, info, url;
  2333.     // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  2334.     if (tn !== 'A') {
  2335.       url = isPic && !src.startsWith('data:') && Util.rel2abs(src);
  2336.       info = RuleMatcher.find(url, node, opts);
  2337.     }
  2338.     if (!info && (a = node.closest('A'))) {
  2339.       const ds = a.dataset;
  2340.       url = ds.expandedUrl || ds.fullUrl || ds.url || a.href || '';
  2341.       url = url.includes('//t.co/') ? 'https://' + a.textContent : url;
  2342.       url = !url.startsWith('data:') && url;
  2343.       info = RuleMatcher.find(url, a, opts);
  2344.     }
  2345.     if (!info && isPic)
  2346.       info = {node, rule: {}, url: src};
  2347.     return info;
  2348.   },
  2349.  
  2350.   /** @returns ?mpiv.RuleMatchInfo */
  2351.   find(url, node, {noHtml, rules, skipRules} = {}) {
  2352.     const tn = node.tagName;
  2353.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  2354.     const isPicOrLink = isPic || tn === 'A';
  2355.     let m, html, info;
  2356.     for (const rule of rules || Ruler.rules) {
  2357.       if (skipRules && skipRules.includes(rule) ||
  2358.           rule.u && (!url || !Ruler.runU(rule, url)) ||
  2359.           rule.e && !rules && !(info = Ruler.runE(rule, node)))
  2360.         continue;
  2361.       if (info && info.url)
  2362.         return info;
  2363.       if (rule.r)
  2364.         m = !noHtml && rule.html && (isPicOrLink || rule.e)
  2365.           ? rule.r.exec(html || (html = node.outerHTML))
  2366.           : url && rule.r.exec(url);
  2367.       else if (url)
  2368.         m = Object.assign([url], {index: 0, input: url});
  2369.       else
  2370.         m = [];
  2371.       if (!m)
  2372.         continue;
  2373.       if (rule.s === '')
  2374.         return {};
  2375.       let hasS = rule.s != null;
  2376.       // a rule with follow:true for the currently hovered IMG produced a URL,
  2377.       // but we'll only allow it to match rules without 's' in the nested find call
  2378.       if (isPic && !hasS && !skipRules)
  2379.         continue;
  2380.       hasS &= rule.s !== 'gallery';
  2381.       const urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  2382.       if (urls)
  2383.         return RuleMatcher.makeInfo(hasS, rule, m, node, skipRules, urls);
  2384.     }
  2385.   },
  2386.  
  2387.   /** @returns ?mpiv.RuleMatchInfo */
  2388.   makeInfo(hasS, rule, match, node, skipRules, urls) {
  2389.     let info;
  2390.     let url = `${urls[0]}`;
  2391.     const follow = url && hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule);
  2392.     if (url)
  2393.       url = Util.rel2abs(url);
  2394.     else
  2395.       info = {};
  2396.     if (follow)
  2397.       info = RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]});
  2398.     if (!info && (!follow || RX_MEDIA_URL.test(url))) {
  2399.       const xhr = cfg.xhr && rule.xhr;
  2400.       info = {
  2401.         match,
  2402.         node,
  2403.         rule,
  2404.         url,
  2405.         urls: urls.length > 1 ? urls.slice(1) : null,
  2406.         gallery: rule.g && Gallery.makeParser(rule.g),
  2407.         post: isFunction(rule.post) ? rule.post(match) : rule.post,
  2408.         xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  2409.       };
  2410.     }
  2411.     return info;
  2412.   },
  2413.  
  2414.   isFollowableUrl(url, rule) {
  2415.     const f = rule.follow;
  2416.     return isFunction(f) ? f(url) : f;
  2417.   },
  2418. };
  2419.  
  2420. const Req = {
  2421.  
  2422.   gmXhr(url, opts = {}) {
  2423.     if (ai.req)
  2424.       tryCatch.call(ai.req, ai.req.abort);
  2425.     return new Promise((resolve, reject) => {
  2426.       const {anonymous} = ai.rule || {};
  2427.       ai.req = GM.xmlHttpRequest(Object.assign({
  2428.         url,
  2429.         anonymous,
  2430.         withCredentials: !anonymous,
  2431.         method: 'GET',
  2432.         timeout: 30e3,
  2433.       }, opts, {
  2434.         onload: done,
  2435.         onerror: done,
  2436.         ontimeout() {
  2437.           ai.req = null;
  2438.           reject(`Timeout fetching ${url}`);
  2439.         },
  2440.       }));
  2441.       function done(r) {
  2442.         ai.req = null;
  2443.         if (r.status < 400 && !r.error)
  2444.           resolve(r);
  2445.         else
  2446.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2447.       }
  2448.     });
  2449.   },
  2450.  
  2451.   async getDoc(url) {
  2452.     if (!url) {
  2453.       // current document
  2454.       return {
  2455.         doc,
  2456.         finalUrl: location.href,
  2457.         responseText: doc.documentElement.outerHTML,
  2458.       };
  2459.     }
  2460.     const r = await (!ai.post ?
  2461.       Req.gmXhr(url) :
  2462.       Req.gmXhr(url, {
  2463.         method: 'POST',
  2464.         data: ai.post,
  2465.         headers: {
  2466.           'Content-Type': 'application/x-www-form-urlencoded',
  2467.           'Referer': url,
  2468.         },
  2469.       }));
  2470.     r.doc = $parseHtml(r.responseText);
  2471.     return r;
  2472.   },
  2473.  
  2474.   async getImage(url, pageUrl, xhr = ai.xhr) {
  2475.     ai.bufBar = false;
  2476.     ai.bufStart = now();
  2477.     const response = await Req.gmXhr(url, {
  2478.       responseType: 'blob',
  2479.       headers: {
  2480.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2481.         Referer: pageUrl || (isFunction(xhr) ? xhr() : url),
  2482.       },
  2483.       onprogress: Req.getImageProgress,
  2484.     });
  2485.     Bar.set(false);
  2486.     const type = Req.guessMimeType(response);
  2487.     let b = response.response;
  2488.     if (!b) throw 'Empty response';
  2489.     if (b.type !== type)
  2490.       b = b.slice(0, b.size, type);
  2491.     const res = xhr === 'blob'
  2492.       ? (ai.blobUrl = URL.createObjectURL(b))
  2493.       : await Req.blobToDataUrl(b);
  2494.     return [res, type.startsWith('video')];
  2495.   },
  2496.  
  2497.   getImageProgress(e) {
  2498.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2499.       ai.bufBar = true;
  2500.     if (ai.bufBar) {
  2501.       const pct = e.loaded / e.total * 100 | 0;
  2502.       const size = e.total / 1024 | 0;
  2503.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2504.     }
  2505.   },
  2506.  
  2507.   async findRedirect() {
  2508.     try {
  2509.       const {finalUrl} = await Req.gmXhr(ai.url, {
  2510.         method: 'HEAD',
  2511.         headers: {
  2512.           'Referer': location.href.split('#', 1)[0],
  2513.         },
  2514.       });
  2515.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2516.       if (!info || !info.url)
  2517.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2518.       Object.assign(ai, info);
  2519.       App.startSingle();
  2520.     } catch (e) {
  2521.       App.handleError(e);
  2522.     }
  2523.   },
  2524.  
  2525.   async saveFile() {
  2526.     const url = ai.popup.src || ai.popup.currentSrc;
  2527.     let name = Req.getFileName(ai.imageUrl || url);
  2528.     if (!name.includes('.'))
  2529.       name += '.jpg';
  2530.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2531.       $new('a', {href: url, download: name})
  2532.         .dispatchEvent(new MouseEvent('click'));
  2533.     } else {
  2534.       Status.set('+loading');
  2535.       const onload = () => Status.set('-loading');
  2536.       const gmDL = typeof GM_download === 'function';
  2537.       (gmDL ? GM_download : GM.xmlHttpRequest)({
  2538.         url,
  2539.         name,
  2540.         headers: {Referer: url},
  2541.         method: 'get', // polyfilling GM_download
  2542.         responseType: 'blob', // polyfilling GM_download
  2543.         overrideMimeType: 'application/octet-stream', // polyfilling GM_download
  2544.         onerror: e => {
  2545.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2546.           onload();
  2547.         },
  2548.         onprogress: Req.getImageProgress,
  2549.         onload({response}) {
  2550.           onload();
  2551.           if (!gmDL) { // polyfilling GM_download
  2552.             const a = Object.assign(document.createElement('a'), {
  2553.               href: URL.createObjectURL(response),
  2554.               download: name,
  2555.             });
  2556.             a.dispatchEvent(new MouseEvent('click'));
  2557.             setTimeout(URL.revokeObjectURL, 10e3, a.href);
  2558.           }
  2559.         },
  2560.       });
  2561.     }
  2562.   },
  2563.  
  2564.   getFileName(url) {
  2565.     return decodeURIComponent(url).split(/[#?&]/, 1)[0].split('/').pop();
  2566.   },
  2567.  
  2568.   blobToDataUrl(blob) {
  2569.     return new Promise((resolve, reject) => {
  2570.       const fr = new FileReader();
  2571.       fr.onload = () => resolve(fr.result);
  2572.       fr.onerror = reject;
  2573.       fr.readAsDataURL(blob);
  2574.     });
  2575.   },
  2576.  
  2577.   guessMimeType({responseHeaders, finalUrl}) {
  2578.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2579.         !RegExp.$1.includes('text/plain'))
  2580.       return RegExp.$1;
  2581.     const ext = Util.extractFileExt(finalUrl) || 'jpg';
  2582.     switch (ext.toLowerCase()) {
  2583.       case 'bmp': return 'image/bmp';
  2584.       case 'gif': return 'image/gif';
  2585.       case 'jpe': return 'image/jpeg';
  2586.       case 'jpeg': return 'image/jpeg';
  2587.       case 'jpg': return 'image/jpeg';
  2588.       case 'mp4': return 'video/mp4';
  2589.       case 'png': return 'image/png';
  2590.       case 'svg': return 'image/svg+xml';
  2591.       case 'tif': return 'image/tiff';
  2592.       case 'tiff': return 'image/tiff';
  2593.       case 'webm': return 'video/webm';
  2594.       default: return 'application/octet-stream';
  2595.     }
  2596.   },
  2597.  
  2598.   findImageUrl(n, url) {
  2599.     if (!n) return;
  2600.     let html;
  2601.     const path =
  2602.       n.getAttribute('data-src') || // lazy loaded src, whereas current `src` is an empty 1x1 pixel
  2603.       n.getAttribute('src') ||
  2604.       n.getAttribute('data-m4v') ||
  2605.       n.getAttribute('href') ||
  2606.       n.getAttribute('content') ||
  2607.       (html = n.outerHTML).includes('http') &&
  2608.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2609.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2610.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2611.   },
  2612. };
  2613.  
  2614. const Status = {
  2615.  
  2616.   set(status) {
  2617.     if (!status && !cfg.globalStatus) {
  2618.       if (ai.node) ai.node.removeAttribute(STATUS_ATTR);
  2619.       return;
  2620.     }
  2621.     const prefix = cfg.globalStatus ? PREFIX : '';
  2622.     const action = status && /^[+-]/.test(status) && status[0];
  2623.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2624.     const el = cfg.globalStatus ? doc.documentElement :
  2625.       name === 'edge' ? ai.popup :
  2626.         ai.node;
  2627.     if (!el) return;
  2628.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2629.     const oldValue = (el.getAttribute(attr) || '').trim();
  2630.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2631.     switch (action) {
  2632.       case '-':
  2633.         cls.delete(name);
  2634.         break;
  2635.       case false:
  2636.         for (const c of cls)
  2637.           if (c.startsWith(prefix) && c !== name)
  2638.             cls.delete(c);
  2639.       // fallthrough to +
  2640.       case '+':
  2641.         if (name)
  2642.           cls.add(name);
  2643.         break;
  2644.     }
  2645.     const newValue = [...cls].join(' ');
  2646.     if (newValue !== oldValue)
  2647.       el.setAttribute(attr, newValue);
  2648.   },
  2649.  
  2650.   loading(force) {
  2651.     if (!force) {
  2652.       clearTimeout(ai.timerStatus);
  2653.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2654.     } else if (!ai.popupLoaded) {
  2655.       Status.set('+loading');
  2656.     }
  2657.   },
  2658. };
  2659.  
  2660. const UrlMatcher = (() => {
  2661.   // string-to-regexp escaped chars
  2662.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2663.   // rx for '^' symbol in simple url match
  2664.   const RX_SEP = /[^\w%._-]/y;
  2665.   const RXS_SEP = RX_SEP.source;
  2666.   return match => {
  2667.     const results = [];
  2668.     for (const s of ensureArray(match)) {
  2669.       const pinDomain = s.startsWith('||');
  2670.       const pinStart = !pinDomain && s.startsWith('|');
  2671.       const endSep = s.endsWith('^');
  2672.       let fn;
  2673.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2674.       if (needle.includes('^')) {
  2675.         let plain = '';
  2676.         for (const part of needle.split('^'))
  2677.           if (part.length > plain.length)
  2678.             plain = part;
  2679.         const rx = new RegExp(
  2680.           (pinStart ? '^' : '') +
  2681.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2682.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2683.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2684.         needle = [plain, rx];
  2685.         fn = regexp;
  2686.       } else if (pinStart) {
  2687.         fn = endSep ? equals : starts;
  2688.       } else if (pinDomain) {
  2689.         const slashPos = needle.indexOf('/');
  2690.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2691.         needle = [needle, domain, slashPos > 0, endSep];
  2692.         fn = startsDomainPrescreen;
  2693.       } else if (endSep) {
  2694.         fn = ends;
  2695.       } else {
  2696.         fn = has;
  2697.       }
  2698.       results.push({fn, data: needle});
  2699.     }
  2700.     return results.length > 1 ?
  2701.       {fn: checkArray, data: results} :
  2702.       results[0];
  2703.   };
  2704.   function checkArray(s) {
  2705.     return this.some(checkArrayItem, s);
  2706.   }
  2707.   function checkArrayItem(item) {
  2708.     return item.fn.call(item.data, this);
  2709.   }
  2710.   function ends(s) {
  2711.     return s.endsWith(this) || (
  2712.       s.length > this.length &&
  2713.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2714.       endsWithSep(s));
  2715.   }
  2716.   function endsWithSep(s, pos = s.length - 1) {
  2717.     RX_SEP.lastIndex = pos;
  2718.     return RX_SEP.test(s);
  2719.   }
  2720.   function equals(s) {
  2721.     return s.startsWith(this) && (
  2722.       s.length === this.length ||
  2723.       s.length === this.length + 1 && endsWithSep(s));
  2724.   }
  2725.   function has(s) {
  2726.     return s.includes(this);
  2727.   }
  2728.   function regexp(s) {
  2729.     return s.includes(this[0]) && this[1].test(s);
  2730.   }
  2731.   function starts(s) {
  2732.     return s.startsWith(this);
  2733.   }
  2734.   function startsDomainPrescreen(url) {
  2735.     return url.includes(this[0]) && startsDomain.call(this, url);
  2736.   }
  2737.   function startsDomain(url) {
  2738.     let hostStart = url.indexOf('//');
  2739.     if (hostStart && url[hostStart - 1] !== ':')
  2740.       return;
  2741.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2742.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2743.     const [needle, domain, pinDomainEnd, endSep] = this;
  2744.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2745.     for (; ; start++) {
  2746.       start = host.indexOf(domain, start);
  2747.       if (start < 0)
  2748.         return;
  2749.       if (!start || host[start - 1] === '.')
  2750.         break;
  2751.     }
  2752.     start += hostStart;
  2753.     if (url.lastIndexOf(needle, start) !== start)
  2754.       return;
  2755.     const end = start + needle.length;
  2756.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2757.   }
  2758. })();
  2759.  
  2760. const Util = {
  2761.  
  2762.   addStyle(name, css) {
  2763.     const id = `${PREFIX}style:${name}`;
  2764.     const el = doc.getElementById(id) ||
  2765.                css && $new('style', {id});
  2766.     if (!el) return;
  2767.     if (el.textContent !== css)
  2768.       el.textContent = css;
  2769.     if (el.parentElement !== doc.head)
  2770.       doc.head.appendChild(el);
  2771.     return el;
  2772.   },
  2773.  
  2774.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2775.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2776.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2777.   },
  2778.  
  2779.   decodeHtmlEntities(s) {
  2780.     return s
  2781.       .replace(/&quot;/g, '"')
  2782.       .replace(/&apos;/g, '\'')
  2783.       .replace(/&lt;/g, '<')
  2784.       .replace(/&gt;/g, '>')
  2785.       .replace(/&amp;/g, '&');
  2786.   },
  2787.  
  2788.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2789.   decodeUrl(url) {
  2790.     if (!url || typeof url !== 'string') return url;
  2791.     const iPct = url.indexOf('%');
  2792.     const iColon = url.indexOf(':');
  2793.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2794.       decodeURIComponent(url) :
  2795.       url;
  2796.   },
  2797.  
  2798.   deepEqual(a, b) {
  2799.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2800.       return a === b;
  2801.     if (Array.isArray(a)) {
  2802.       return Array.isArray(b) &&
  2803.         a.length === b.length &&
  2804.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2805.     }
  2806.     const keys = Object.keys(a);
  2807.     return keys.length === Object.keys(b).length &&
  2808.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2809.   },
  2810.  
  2811.   extractFileExt: url => (url = RX_MEDIA_URL.exec(url)) && url[1],
  2812.  
  2813.   forceLayout(node) {
  2814.     // eslint-disable-next-line no-unused-expressions
  2815.     node.clientHeight;
  2816.   },
  2817.  
  2818.   formatError(e, rule) {
  2819.     const message =
  2820.       e.message ||
  2821.       e.readyState && 'Request failed.' ||
  2822.       e.type === 'error' && `File can't be displayed.${
  2823.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2824.       }` ||
  2825.       e;
  2826.     const m = [
  2827.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold'],
  2828.       ['', 'font-weight:normal'],
  2829.     ];
  2830.     m.push(...[
  2831.       ['Node: %o', ai.node],
  2832.       ['Rule: %o', rule],
  2833.       ai.url && ['URL: %s', ai.url],
  2834.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2835.     ].filter(Boolean));
  2836.     return {
  2837.       message,
  2838.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2839.       consoleArgs: m.map(([, v]) => v),
  2840.     };
  2841.   },
  2842.  
  2843.   isHovered(el) {
  2844.     // doesn't work in image tabs, browser bug?
  2845.     return App.isImageTab || el.closest(':hover');
  2846.   },
  2847.  
  2848.   isVideoUrl: url => url.startsWith('data:video') || Util.isVideoUrlExt(url),
  2849.  
  2850.   isVideoUrlExt: url => (url = Util.extractFileExt(url)) && /^(webm|mp4)$/i.test(url),
  2851.  
  2852.   newFunction(...args) {
  2853.     try {
  2854.       return App.NOP || new Function(...args);
  2855.     } catch (e) {
  2856.       if (!RX_EVAL_BLOCKED.test(e.message))
  2857.         throw e;
  2858.       App.NOP = () => {};
  2859.       return App.NOP;
  2860.     }
  2861.   },
  2862.  
  2863.   rel2abs(rel, abs = location.href) {
  2864.     try {
  2865.       return /^(data:|blob:|[-\w]+:\/\/)/.test(rel) ? rel :
  2866.         new URL(rel, abs).href;
  2867.     } catch (e) {
  2868.       return rel;
  2869.     }
  2870.   },
  2871.  
  2872.   stringify(...args) {
  2873.     const p = Array.prototype;
  2874.     const {toJSON} = p;
  2875.     if (toJSON) p.toJSON = null;
  2876.     const res = JSON.stringify(...args);
  2877.     if (toJSON) p.toJSON = toJSON;
  2878.     return res;
  2879.   },
  2880.  
  2881.   suppressTooltip() {
  2882.     for (const node of [
  2883.       ai.node.parentNode,
  2884.       ai.node,
  2885.       ai.node.firstElementChild,
  2886.     ]) {
  2887.       const t = (node || 0).title;
  2888.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2889.         ai.tooltip = {node, text: t};
  2890.         node.title = '';
  2891.         break;
  2892.       }
  2893.     }
  2894.   },
  2895.  
  2896.   tabFixUrl() {
  2897.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2898.            navigator.userAgent.includes('Gecko/') &&
  2899.            flattenHtml(`data:text/html;charset=utf8,
  2900.       <style>
  2901.         body {
  2902.           margin: 0;
  2903.           padding: 0;
  2904.           background: #222;
  2905.         }
  2906.         .fit {
  2907.           overflow: hidden
  2908.         }
  2909.         .fit > img {
  2910.           max-width: 100vw;
  2911.           max-height: 100vh;
  2912.         }
  2913.         body > img {
  2914.           margin: auto;
  2915.           position: absolute;
  2916.           left: 0;
  2917.           right: 0;
  2918.           top: 0;
  2919.           bottom: 0;
  2920.         }
  2921.       </style>
  2922.       <body class=fit>
  2923.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2924.       </body>
  2925.     `).replace(/\x20?([:>])\x20/g, '$1').replace(/#/g, '%23');
  2926.   },
  2927. };
  2928.  
  2929. async function setup({rule} = {}) {
  2930.   if (!isFunction(doc.body.attachShadow)) {
  2931.     alert('Cannot show MPIV config dialog: the browser is probably too old.\n' +
  2932.           'You can edit the script\'s storage directly in your userscript manager.');
  2933.     return;
  2934.   }
  2935.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2936.   let uiCfg;
  2937.   let root = (elSetup || 0).shadowRoot;
  2938.   let {blankRuleElement} = setup;
  2939.   /** @type NodeList */
  2940.   const UI = new Proxy({}, {
  2941.     get(_, id) {
  2942.       return root.getElementById(id);
  2943.     },
  2944.   });
  2945.   if (!rule || !elSetup)
  2946.     init(await Config.load({save: true}));
  2947.   if (rule)
  2948.     installRule(rule);
  2949.  
  2950.   function init(data) {
  2951.     uiCfg = data;
  2952.     $remove(elSetup);
  2953.     elSetup = $new('div', {contentEditable: true});
  2954.     root = elSetup.attachShadow({mode: 'open'});
  2955.     root.append(...createSetupElement());
  2956.     initEvents();
  2957.     renderAll();
  2958.     renderCustomScales();
  2959.     renderRules();
  2960.     doc.body.appendChild(elSetup);
  2961.     requestAnimationFrame(() => {
  2962.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elSetup.clientHeight / 4) + 'px';
  2963.     });
  2964.   }
  2965.  
  2966.   function initEvents() {
  2967.     UI._apply.onclick = UI._cancel.onclick = UI._ok.onclick = UI._x.onclick = closeSetup;
  2968.     UI._export.onclick = e => {
  2969.       dropEvent(e);
  2970.       GM.setClipboard(Util.stringify(collectConfig(), null, '  '));
  2971.       UI._exportNotification.hidden = false;
  2972.       setTimeout(() => (UI._exportNotification.hidden = true), 1000);
  2973.     };
  2974.     UI._import.onclick = e => {
  2975.       dropEvent(e);
  2976.       const s = prompt('Paste settings:');
  2977.       if (s)
  2978.         init(new Config({data: s}));
  2979.     };
  2980.     UI._install.onclick = setupRuleInstaller;
  2981.     const /** @type {HTMLTextAreaElement} */ cssApp = UI._cssApp;
  2982.     UI._reveal.onclick = e => {
  2983.       e.preventDefault();
  2984.       cssApp.hidden = !cssApp.hidden;
  2985.       if (!cssApp.hidden) {
  2986.         if (!cssApp.value) {
  2987.           App.updateStyles();
  2988.           cssApp.value = App.globalStyle.trim();
  2989.           cssApp.setSelectionRange(0, 0);
  2990.         }
  2991.         cssApp.focus();
  2992.       }
  2993.     };
  2994.     UI.start.onchange = function () {
  2995.       UI.delay.closest('label').hidden =
  2996.         UI.preload.closest('label').hidden =
  2997.           this.value !== 'auto';
  2998.     };
  2999.     UI.start.onchange();
  3000.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  3001.     // color
  3002.     for (const el of $$('[type="color"]', root)) {
  3003.       el.oninput = colorOnInput;
  3004.       el.elSwatch = el.nextElementSibling;
  3005.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  3006.       el.elOpacity.elColor = el;
  3007.     }
  3008.     function colorOnInput() {
  3009.       this.elSwatch.style.setProperty('--color',
  3010.         Util.color(this.value, this.elOpacity.valueAsNumber));
  3011.     }
  3012.     // range
  3013.     for (const el of $$('[type="range"]', root)) {
  3014.       el.oninput = rangeOnInput;
  3015.       el.onblur = rangeOnBlur;
  3016.       el.addEventListener('focusin', rangeOnFocus);
  3017.     }
  3018.     function rangeOnBlur(e) {
  3019.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  3020.         this.elEdit.onblur(e);
  3021.     }
  3022.     function rangeOnFocus() {
  3023.       if (this.elEdit) return;
  3024.       const {min, max, step, value} = this;
  3025.       this.elEdit = $new('input', {
  3026.         value, min, max, step,
  3027.         className: 'range-edit',
  3028.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  3029.         type: 'number',
  3030.         elRange: this,
  3031.         onblur: rangeEditOnBlur,
  3032.         oninput: rangeEditOnInput,
  3033.       });
  3034.       this.insertAdjacentElement('afterend', this.elEdit);
  3035.     }
  3036.     function rangeOnInput() {
  3037.       this.title = (this.dataset.title || '').replace('$', this.value);
  3038.       if (this.elColor) this.elColor.oninput();
  3039.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  3040.     }
  3041.     // range-edit
  3042.     function rangeEditOnBlur(e) {
  3043.       if (e.relatedTarget !== this.elRange) {
  3044.         this.remove();
  3045.         this.elRange.elEdit = null;
  3046.       }
  3047.     }
  3048.     function rangeEditOnInput() {
  3049.       this.elRange.valueAsNumber = this.valueAsNumber;
  3050.       this.elRange.oninput();
  3051.     }
  3052.     // prevent the main page from interpreting key presses in inputs as hotkeys
  3053.     // which may happen since it sees only the outer <div> in the event |target|
  3054.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  3055.   }
  3056.  
  3057.   function closeSetup(event) {
  3058.     const isApply = this.id === '_apply';
  3059.     if (event && (this.id === '_ok' || isApply)) {
  3060.       cfg = uiCfg = collectConfig({save: true, clone: isApply});
  3061.       Ruler.init();
  3062.       Menu.reRegisterAlt();
  3063.       if (isApply) {
  3064.         renderCustomScales();
  3065.         UI._css.textContent = cfg._getCss();
  3066.         return;
  3067.       }
  3068.     }
  3069.     $remove(elSetup);
  3070.     elSetup = null;
  3071.   }
  3072.  
  3073.   function collectConfig({save, clone} = {}) {
  3074.     let data = {};
  3075.     for (const el of $$('input[id], select[id]', root))
  3076.       data[el.id] = el.type === 'checkbox' ? el.checked :
  3077.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  3078.           el.value || '';
  3079.     Object.assign(data, {
  3080.       css: UI.css.value.trim(),
  3081.       delay: UI.delay.valueAsNumber * 1000,
  3082.       hosts: collectRules(),
  3083.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  3084.       scales: UI.scales.value
  3085.         .trim()
  3086.         .split(/[,;]*\s+/)
  3087.         .map(x => x.replace(',', '.'))
  3088.         .filter(x => !isNaN(parseFloat(x))),
  3089.     });
  3090.     if (clone)
  3091.       data = JSON.parse(Util.stringify(data));
  3092.     return new Config({data, save});
  3093.   }
  3094.  
  3095.   function collectRules() {
  3096.     return [...UI._rules.children]
  3097.       .map(el => [el.value.trim(), el[RULE]])
  3098.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  3099.       .map(([s, json]) => json || s)
  3100.       .filter(Boolean);
  3101.   }
  3102.  
  3103.   function checkRule({target: el}) {
  3104.     let json, error, title;
  3105.     const prev = el.previousElementSibling;
  3106.     if (el.value) {
  3107.       json = Ruler.parse(el.value);
  3108.       error = json instanceof Error && (json.message || String(json));
  3109.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  3110.         !/^[-.a-z0-9]*$/i.test(json.d);
  3111.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  3112.         .filter(Boolean).join('\n');
  3113.       el.classList.toggle('invalid-domain', invalidDomain);
  3114.       el.classList.toggle('matching-domain', !!json.d && hostname.includes(json.d));
  3115.       if (!prev)
  3116.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3117.     } else if (prev) {
  3118.       prev.focus();
  3119.       el.remove();
  3120.     }
  3121.     el[RULE] = !error && json;
  3122.     el.title = title;
  3123.     el.setCustomValidity(error || '');
  3124.   }
  3125.  
  3126.   async function focusRule({target: el, relatedTarget: from}) {
  3127.     if (el === this)
  3128.       return;
  3129.     await new Promise(setTimeout);
  3130.     if (el[RULE] && el.rows < 2) {
  3131.       let i = el.selectionStart;
  3132.       const txt = el.value = Ruler.format(el[RULE], {expand: true});
  3133.       i += txt.slice(0, i).match(/^\s*/gm).reduce((len, s) => len + s.length, 0);
  3134.       el.setSelectionRange(i, i);
  3135.       el.rows = txt.match(/^/gm).length;
  3136.     }
  3137.     if (!this.contains(from))
  3138.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  3139.   }
  3140.  
  3141.   function installRule(rule) {
  3142.     const inputs = UI._rules.children;
  3143.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  3144.     if (!el) {
  3145.       el = inputs[0];
  3146.       el[RULE] = rule;
  3147.       el.value = Ruler.format(rule);
  3148.       el.hidden = false;
  3149.       const i = Math.max(0, collectRules().indexOf(rule));
  3150.       inputs[i].insertAdjacentElement('afterend', el);
  3151.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  3152.     }
  3153.     const rect = el.getBoundingClientRect();
  3154.     if (rect.bottom < 0 ||
  3155.         rect.bottom > el.parentNode.offsetHeight)
  3156.       el.scrollIntoView();
  3157.     el.classList.add('highlight');
  3158.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  3159.     el.focus();
  3160.   }
  3161.  
  3162.   function renderRules() {
  3163.     const rules = UI._rules;
  3164.     rules.addEventListener('input', checkRule);
  3165.     rules.addEventListener('focusin', focusRule);
  3166.     rules.addEventListener('paste', focusRule);
  3167.     blankRuleElement =
  3168.       setup.blankRuleElement =
  3169.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  3170.     for (const rule of uiCfg.hosts || []) {
  3171.       const el = blankRuleElement.cloneNode();
  3172.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  3173.       rules.appendChild(el);
  3174.       checkRule({target: el});
  3175.     }
  3176.     const search = UI._search;
  3177.     search.oninput = () => {
  3178.       setup.search = search.value;
  3179.       const s = search.value.toLowerCase();
  3180.       for (const el of rules.children)
  3181.         el.hidden = s && !el.value.toLowerCase().includes(s);
  3182.     };
  3183.     search.value = setup.search || '';
  3184.     if (search.value)
  3185.       search.oninput();
  3186.   }
  3187.  
  3188.   function renderCustomScales() {
  3189.     UI.scales.value = uiCfg.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  3190.   }
  3191.  
  3192.   function renderAll() {
  3193.     for (const el of $$('input[id], select[id], textarea[id]', root))
  3194.       if (el.id in uiCfg)
  3195.         el[el.type === 'checkbox' ? 'checked' : 'value'] = uiCfg[el.id];
  3196.     for (const el of $$('input[type="range"]', root))
  3197.       el.oninput();
  3198.     for (const el of $$('a[href^="http"]', root))
  3199.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  3200.     UI.delay.valueAsNumber = uiCfg.delay / 1000;
  3201.     UI.scale.valueAsNumber = Math.round(clamp(uiCfg.scale - 1, 0, 1) * 100);
  3202.   }
  3203. }
  3204.  
  3205. function setupClickedRule(event) {
  3206.   let rule;
  3207.   const el = event.target.closest('blockquote, code, pre');
  3208.   if (el && !event.button && !eventModifiers(event) && (rule = Ruler.fromElement(el))) {
  3209.     dropEvent(event);
  3210.     setup({rule});
  3211.   }
  3212. }
  3213.  
  3214. async function setupRuleInstaller(e) {
  3215.   dropEvent(e);
  3216.   const parent = this.parentElement;
  3217.   parent.children._installLoading.hidden = false;
  3218.   this.remove();
  3219.   let rules;
  3220.  
  3221.   try {
  3222.     rules = extractRules(await Req.getDoc(this.href));
  3223.     const selector = $new('select', {
  3224.       size: 8,
  3225.       style: 'width: 100%',
  3226.       selectedIndex: findMatchingRuleIndex(),
  3227.       ondblclick: e => e.target !== selector && maybeSetup(e),
  3228.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  3229.     }, rules.map(renderRule));
  3230.     parent.children._installLoading.remove();
  3231.     parent.children._installHint.hidden = false;
  3232.     parent.appendChild(selector);
  3233.     requestAnimationFrame(() => {
  3234.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  3235.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  3236.       selector.focus();
  3237.     });
  3238.   } catch (e) {
  3239.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  3240.   }
  3241.  
  3242.   function extractRules({doc}) {
  3243.     // sort by name
  3244.     return [...$$('#wiki-body tr', doc)]
  3245.       .map(tr => [
  3246.         tr.cells[0].textContent.trim(),
  3247.         Ruler.fromElement(tr.cells[1]),
  3248.       ])
  3249.       .filter(([name, r]) =>
  3250.         name && r && (!r.d || hostname.includes(r.d)))
  3251.       .sort(([a], [b]) =>
  3252.         (a = a.toLowerCase()) < (b = b.toLowerCase()) ? -1 :
  3253.           a > b ? 1 :
  3254.             0);
  3255.   }
  3256.  
  3257.   function findMatchingRuleIndex() {
  3258.     const dottedHost = `.${hostname}.`;
  3259.     let maxCount = 0, maxIndex = 0, index = 0;
  3260.     for (const [name, {d}] of rules) {
  3261.       let count = !!(d && hostname.includes(d)) * 10;
  3262.       for (const part of name.toLowerCase().split(/[^a-z\d.-]+/i))
  3263.         count += dottedHost.includes(`.${part}.`) && part.length;
  3264.       if (count > maxCount) {
  3265.         maxCount = count;
  3266.         maxIndex = index;
  3267.       }
  3268.       index++;
  3269.     }
  3270.     return maxIndex;
  3271.   }
  3272.  
  3273.   function renderRule([name, rule]) {
  3274.     return $new('option', {
  3275.       textContent: name,
  3276.       title: Ruler.format(rule, {expand: true})
  3277.         .replace(/^{|\s*}$/g, '')
  3278.         .split('\n')
  3279.         .slice(0, 12)
  3280.         .map(renderTitleLine)
  3281.         .filter(Boolean)
  3282.         .join('\n'),
  3283.     });
  3284.   }
  3285.  
  3286.   function renderTitleLine(line, i, arr) {
  3287.     return (
  3288.       // show ... on 10th line if there are more lines
  3289.       i === 9 && arr.length > 10 ? '...' :
  3290.         i > 10 ? '' :
  3291.           // truncate to 100 chars
  3292.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  3293.             // strip the leading space
  3294.             .replace(/^\s/, ''));
  3295.   }
  3296.  
  3297.   function maybeSetup(e) {
  3298.     if (!eventModifiers(e))
  3299.       setup({rule: rules[e.currentTarget.selectedIndex][1]});
  3300.   }
  3301. }
  3302.  
  3303. const CSS_SETUP = /*language=css*/ `
  3304.   :host {
  3305.     all: initial !important;
  3306.     position: fixed !important;
  3307.     z-index: 2147483647 !important;
  3308.     top: 20px !important;
  3309.     right: 20px !important;
  3310.     padding: 1.5em !important;
  3311.     color: #000 !important;
  3312.     background: #eee !important;
  3313.     box-shadow: 5px 5px 25px 2px #000 !important;
  3314.     width: 33em !important;
  3315.     border: 1px solid black !important;
  3316.     display: flex !important;
  3317.     flex-direction: column !important;
  3318.   }
  3319.   main {
  3320.     font: 12px/15px sans-serif;
  3321.   }
  3322.   table {
  3323.     text-align:left;
  3324.   }
  3325.   ul {
  3326.     max-height: calc(100vh - 200px);
  3327.     margin: 0 0 15px 0;
  3328.     padding: 0;
  3329.     list-style: none;
  3330.   }
  3331.   li {
  3332.     margin: 0;
  3333.     padding: .25em 0;
  3334.   }
  3335.   li.options {
  3336.     display: flex;
  3337.     align-items: center;
  3338.     justify-content: space-between;
  3339.   }
  3340.   li.row {
  3341.     align-items: start;
  3342.     flex-wrap: wrap;
  3343.   }
  3344.   li.row label {
  3345.     display: flex;
  3346.     flex-direction: row;
  3347.     align-items: center;
  3348.   }
  3349.   li.row input {
  3350.     margin-right: .25em;
  3351.   }
  3352.   li.stretch label {
  3353.     flex: 1;
  3354.     white-space: nowrap;
  3355.   }
  3356.   li.stretch label > span {
  3357.     display: flex;
  3358.     flex-direction: row;
  3359.     flex: 1;
  3360.   }
  3361.   label {
  3362.     display: inline-flex;
  3363.     flex-direction: column;
  3364.   }
  3365.   label:not(:last-child) {
  3366.     margin-right: 1em;
  3367.   }
  3368.   input, select {
  3369.     min-height: 1.3em;
  3370.     box-sizing: border-box;
  3371.   }
  3372.   input[type=checkbox] {
  3373.     margin-left: 0;
  3374.   }
  3375.   input[type=number] {
  3376.     width: 4em;
  3377.   }
  3378.   input:not([type=checkbox])  {
  3379.     padding: 0 .25em;
  3380.   }
  3381.   input[type=range] {
  3382.     flex: 1;
  3383.     width: 100%;
  3384.     margin: 0 .25em;
  3385.     padding: 0;
  3386.     filter: saturate(0);
  3387.     opacity: .5;
  3388.   }
  3389.   u + input[type=range] {
  3390.     max-width: 3em;
  3391.   }
  3392.   input[type=range]:hover {
  3393.     filter: none;
  3394.     opacity: 1;
  3395.   }
  3396.   input[type=color] {
  3397.     position: absolute;
  3398.     width: calc(1.5em + 2px);
  3399.     opacity: 0;
  3400.     cursor: pointer;
  3401.   }
  3402.   u {
  3403.     position: relative;
  3404.     flex: 0 0 1.5em;
  3405.     height: 1.5em;
  3406.     border: 1px solid #888;
  3407.     pointer-events: none;
  3408.     color: #888;
  3409.     background-image:
  3410.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  3411.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  3412.     background-size: .5em .5em;
  3413.     background-position: 0 0, .25em .25em;
  3414.   }
  3415.   u::after {
  3416.     position: absolute;
  3417.     top: 0;
  3418.     left: 0;
  3419.     right: 0;
  3420.     bottom: 0;
  3421.     content: "";
  3422.     background-color: var(--color);
  3423.   }
  3424.   .range-edit {
  3425.     position: absolute;
  3426.     box-shadow: 0 0.25em 1em #000;
  3427.     z-index: 99;
  3428.   }
  3429.   textarea {
  3430.     resize: vertical;
  3431.     margin: 1px 0;
  3432.     font: 11px/1.25 Consolas, monospace;
  3433.   }
  3434.   :invalid {
  3435.     background-color: #f002;
  3436.     border-color: #800;
  3437.   }
  3438.   code {
  3439.     font-weight: bold;
  3440.   }
  3441.   a {
  3442.     text-decoration: none;
  3443.     color: LinkText;
  3444.   }
  3445.   a:hover {
  3446.     text-decoration: underline;
  3447.   }
  3448.   button {
  3449.     padding: .2em 1em;
  3450.     margin: 0 1em;
  3451.   }
  3452.   kbd {
  3453.     padding: 1px 6px;
  3454.     font-weight: bold;
  3455.     font-family: Consolas, monospace;
  3456.     border: 1px solid #888;
  3457.     border-radius: 3px;
  3458.     box-shadow: inset 1px 1px 5px #8888, .25px .5px 2px #0008;
  3459.   }
  3460.   .column {
  3461.     display: flex;
  3462.     flex-direction: column;
  3463.   }
  3464.   .highlight {
  3465.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  3466.     animation-fill-mode: both;
  3467.   }
  3468.   #_rules > * {
  3469.     word-break: break-all;
  3470.   }
  3471.   #_rules > :not(:focus) {
  3472.     overflow: hidden; /* prevents wrapping in FF */
  3473.   }
  3474.   .invalid-domain {
  3475.     opacity: .5;
  3476.   }
  3477.   .matching-domain {
  3478.     border-color: #56b8ff;
  3479.     background: #d7eaff;
  3480.   }
  3481.   #_x {
  3482.     position: absolute;
  3483.     top: 0;
  3484.     right: 0;
  3485.     padding: 4px 8px;
  3486.     cursor: pointer;
  3487.     user-select: none;
  3488.   }
  3489.   #_x:hover {
  3490.     background-color: #8884;
  3491.   }
  3492.   #_cssApp {
  3493.     color: seagreen;
  3494.   }
  3495.   #_exportNotification {
  3496.     color: green;
  3497.     font-weight: bold;
  3498.     position: absolute;
  3499.     left: 0;
  3500.     right: 0;
  3501.     bottom: 2px;
  3502.   }
  3503.   #_installHint {
  3504.     color: green;
  3505.   }
  3506.   #_usage, #_usage * {
  3507.     font: inherit;
  3508.     color: inherit;
  3509.   }
  3510.   #_usage th, #_usage kbd {
  3511.     font-weight: bold;
  3512.     white-space: pre-line;
  3513.   }
  3514.   @keyframes fade-in {
  3515.     from { background-color: deepskyblue }
  3516.     to {}
  3517.   }
  3518.   @media (prefers-color-scheme: dark) {
  3519.     :host {
  3520.       color: #aaa !important;
  3521.       background: #333 !important;
  3522.     }
  3523.     a {
  3524.       color: deepskyblue;
  3525.     }
  3526.     button {
  3527.       background: linear-gradient(-5deg, #333, #555);
  3528.       border: 1px solid #000;
  3529.       box-shadow: 0 2px 6px #181818;
  3530.       border-radius: 3px;
  3531.       cursor: pointer;
  3532.     }
  3533.     button:hover {
  3534.       background: linear-gradient(-5deg, #333, #666);
  3535.     }
  3536.     textarea, input, select {
  3537.       background: #111;
  3538.       color: #BBB;
  3539.       border: 1px solid #555;
  3540.     }
  3541.     input[type=checkbox] {
  3542.       filter: invert(1);
  3543.     }
  3544.     input[type=range] {
  3545.       filter: invert(1) saturate(0);
  3546.     }
  3547.     input[type=range]:hover {
  3548.       filter: invert(1);
  3549.     }
  3550.     kbd {
  3551.       border-color: #666;
  3552.     }
  3553.     @supports (-moz-appearance: none) {
  3554.       input[type=checkbox],
  3555.       input[type=range],
  3556.       input[type=range]:hover {
  3557.         filter: none;
  3558.       }
  3559.     }
  3560.     .range-edit {
  3561.       box-shadow: 0 .5em 1em .5em #000;
  3562.     }
  3563.     .matching-domain {
  3564.       border-color: #0065af;
  3565.       background: #032b58;
  3566.       color: #ddd;
  3567.     }
  3568.     #_cssApp {
  3569.       color: darkseagreen;
  3570.     }
  3571.     #_installHint {
  3572.       color: greenyellow;
  3573.     }
  3574.     ::-webkit-scrollbar {
  3575.       width: 14px;
  3576.       height: 14px;
  3577.       background: #333;
  3578.     }
  3579.     ::-webkit-scrollbar-button:single-button {
  3580.       background: radial-gradient(circle at center, #555 40%, #333 40%)
  3581.     }
  3582.     ::-webkit-scrollbar-track-piece {
  3583.       background: #444;
  3584.       border: 4px solid #333;
  3585.       border-radius: 8px;
  3586.     }
  3587.     ::-webkit-scrollbar-thumb {
  3588.       border: 3px solid #333;
  3589.       border-radius: 8px;
  3590.       background: #666;
  3591.     }
  3592.     ::-webkit-resizer {
  3593.       background: #111 linear-gradient(-45deg, transparent 3px, #888 3px, #888 4px, transparent 4px, transparent 6px, #888 6px, #888 7px, transparent 7px) no-repeat;
  3594.       border: 2px solid transparent;
  3595.     }
  3596.   }
  3597. `;
  3598.  
  3599. function createSetupElement() {
  3600.   const MPIV_BASE_URL = 'https://github.com/tophf/mpiv/wiki/';
  3601.   const scalesHint = 'Leave it empty and click Apply or OK to restore the default values.';
  3602.   const $newLink = (text, href, props) =>
  3603.     $new('a', Object.assign({href, target: '_blank'}, props), text);
  3604.   const $newCheck = (label, id, title, props) =>
  3605.     $new('label', Object.assign({title}, props), [
  3606.       $new('input', {id, type: 'checkbox'}),
  3607.       label,
  3608.     ]);
  3609.   const $newKbd = (str, tag = 'fragment') =>
  3610.     $new(tag, str.split(/({.+?})/).map(s => s[0] === '{' ? $new('kbd', s.slice(1, -1)) : s));
  3611.   const $newRange = (id, title, min = 0, max = 100, step = 1) =>
  3612.     $new('input', {id, min, max, step, type: 'range', 'data-title': title});
  3613.   const $newSelect = (label, id, values) =>
  3614.     $new('label', [
  3615.       label,
  3616.       $new('select', {id}, Object.entries(values).map(([k, v]) =>
  3617.         $new('option', Object.assign({value: k}, typeof v === 'object' ? v : {textContent: v})))),
  3618.     ]);
  3619.   const $newTable = obj =>
  3620.     $new('table#_usage', Object.entries(obj).map(([name, val]) =>
  3621.       $new('tr', name.startsWith('---') ? $new('td', '\xA0') : [
  3622.         $new('th', name),
  3623.         ...ensureArray(val).map(cell => cell instanceof Node ? cell : $newKbd(cell, 'td')),
  3624.       ])));
  3625.   return [
  3626.     $new('style', CSS_SETUP),
  3627.     $new('style#_css', cfg._getCss()),
  3628.     $new(`main#${PREFIX}setup`, [
  3629.       $new('div#_x'),
  3630.       $new('ul.column', [
  3631.         $new('details', {style: 'margin: -1em 0 0'}, [
  3632.           $new('summary', {style: 'cursor:pointer; color:LinkText'},
  3633.             $new('b', 'Click to view help & hotkeys')),
  3634.           $newTable({
  3635.             'Activate': 'move mouse cursor over thumbnail',
  3636.             'Deactivate': 'move cursor off thumbnail, or click, or zoom out fully',
  3637.             'Prevent/freeze': 'hold down {Shift} while entering/leaving thumbnail',
  3638.             'Force-activate\n(for small pics)': 'hold {Ctrl} while entering image element',
  3639.             '---1': '',
  3640.             'Start zooming':
  3641.               'configurable: automatic or via right-click / {Shift} while popup is visible',
  3642.             'Zoom': 'mouse wheel',
  3643.             'Rotate': '{L} {r} keys (left or right)',
  3644.             'Flip/mirror': '{h} {v} keys (horizontally or vertically)',
  3645.             'Previous/next\nin album': 'mouse wheel, {j} {k} or {←} {→} keys',
  3646.             '---2': '',
  3647.           }),
  3648.           $newTable({
  3649.             'Antialiasing on/off': ['{a}', $new('td', {rowSpan: 4}, 'key while popup is visible')],
  3650.             'Download': '{d}',
  3651.             'Mute/unmute': '{m}',
  3652.             'Open in tab': '{t}',
  3653.           }),
  3654.         ]),
  3655.         $new('li.options.stretch', [
  3656.           $newSelect('Popup shows on', 'start', {
  3657.             context: 'Right-click / \u2261 / Ctrl',
  3658.             contextMK: 'Right-click / \u2261',
  3659.             contextM: 'Right-click',
  3660.             contextK: {
  3661.               textContent: '\u2261 key',
  3662.               title: '\u2261 is the Menu key (near the right Ctrl)',
  3663.             },
  3664.             ctrl: 'Ctrl',
  3665.             auto: 'automatically',
  3666.           }),
  3667.           $new('label', [
  3668.             'after, sec',
  3669.             $new('input#delay', {type: 'number', min: .05, max: 10, step: .05, title: 'seconds'}),
  3670.           ]),
  3671.           $new('label', {title: '(if the full version of the hovered image is ...% larger)'}, [
  3672.             'if larger, %',
  3673.             $new('input#scale', {type: 'number', min: 0, max: 100, step: 1}),
  3674.           ]),
  3675.           $newSelect('Zoom activates on', 'zoom', {
  3676.             context: 'Right click / Shift',
  3677.             wheel: 'Wheel up / Shift',
  3678.             shift: 'Shift',
  3679.             auto: 'automatically',
  3680.           }),
  3681.           $newSelect('...and zooms to', 'fit', {
  3682.             'all': 'fit to window',
  3683.             'large': 'fit if larger',
  3684.             'no': '100%',
  3685.             '': {textContent: 'custom', title: 'Use custom scale factors'},
  3686.           }),
  3687.         ]),
  3688.         $new('li.options', [
  3689.           $new('label', [
  3690.             'Zoom step, %',
  3691.             $new('input#zoomStep', {type: 'number', min: 100, max: 400, step: 1}),
  3692.           ]),
  3693.           $newSelect('When fully zoomed out:', 'zoomOut', {
  3694.             stay: 'stay in zoom mode',
  3695.             auto: 'stay if still hovered',
  3696.             unzoom: 'undo zoom mode',
  3697.             close: 'close popup',
  3698.           }),
  3699.           $new('label', {
  3700.             style: 'flex: 1',
  3701.             title: `
  3702.               Scale factors to use when “zooms to” selector is set to “custom”.
  3703.               0 = fit to window,
  3704.               0! = same as 0 but also removes smaller values,
  3705.               * after a value marks the default zoom factor, for example: 1*
  3706.               The popup won't shrink below the image's natural size or window size for bigger mages.
  3707.               ${scalesHint}
  3708.             `.trim().replace(/\n\s+/g, '\r'),
  3709.           }, [
  3710.             'Custom scale factors:',
  3711.             $new('input#scales', {placeholder: scalesHint}),
  3712.           ]),
  3713.         ]),
  3714.         $new('li.options.row', [
  3715.           $new([
  3716.             $newCheck('Centered*', 'center',
  3717.               '...or try to keep the original link/thumbnail unobscured by the popup'),
  3718.             $newCheck('Preload on hover*', 'preload',
  3719.               'Provides smoother experience but increases network traffic'),
  3720.             $newCheck('Run in image tabs', 'imgtab'),
  3721.             $newCheck('Keep preview on blur*', 'keepOnBlur',
  3722.               'i.e. when mouse pointer moves outside the page'),
  3723.           ]),
  3724.           $new([
  3725.             $newCheck('Mute videos', 'mute'),
  3726.             $newCheck('Spoof hotlinking*`, ', 'xhr',
  3727.               'Disable only if you spoof the HTTP headers yourself'),
  3728.             $newCheck('Set status on <html>*', 'globalStatus',
  3729.               "Causes slowdowns so don't enable unless you explicitly use it in your custom CSS"),
  3730.             $newCheck('Keep playing video*', 'keepVids',
  3731.               '...until you press Esc key or click elsewhere'),
  3732.           ]),
  3733.           $new([
  3734.             $newCheck('Show when fully loaded*', 'waitLoad',
  3735.               '...or show a partial image while still loading'),
  3736.             $newCheck('Fade-in transition', 'uiFadein'),
  3737.             $newCheck('Fade-in transition in gallery', 'uiFadeinGallery'),
  3738.             $newCheck('Auto-start switch in menu*', 'startAltShown',
  3739.               "Show a switch for 'auto-start' mode in userscript manager menu"),
  3740.           ]),
  3741.         ]),
  3742.         $new('li.options.stretch', [
  3743.           $new('label', [
  3744.             'Background',
  3745.             $new('span', [
  3746.               $new('input#uiBackgroundColor', {type: 'color'}), $new('u'),
  3747.               $newRange('uiBackgroundOpacity', 'Opacity: $%'),
  3748.             ]),
  3749.           ]),
  3750.           $new('label', [
  3751.             'Border color, opacity, size',
  3752.             $new('span', [
  3753.               $new('input#uiBorderColor', {type: 'color'}), $new('u'),
  3754.               $newRange('uiBorderOpacity', 'Opacity: $%'),
  3755.               $newRange('uiBorder', 'Border size: $px', 0, 20),
  3756.             ]),
  3757.           ]),
  3758.           $new('label', [
  3759.             'Shadow color, opacity, size',
  3760.             $new('span', [
  3761.               $new('input#uiShadowColor', {type: 'color'}), $new('u'),
  3762.               $newRange('uiShadowOpacity', 'Opacity: $%'),
  3763.               $newRange('uiShadow', 'Shadow blur radius: $px\n"0" disables the shadow.', 0, 20),
  3764.             ]),
  3765.           ]),
  3766.           $new('label', ['Padding', $new('span', $newRange('uiPadding', 'Padding: $px'))]),
  3767.           $new('label', ['Margin', $new('span', $newRange('uiMargin', 'Margin: $px'))]),
  3768.         ]),
  3769.         $new('li', [
  3770.           $newLink('Custom CSS:', `${MPIV_BASE_URL}Custom-CSS`),
  3771.           ' e.g. ', $new('b', '#mpiv-popup { animation: none !important }'),
  3772.           $newLink('View the built-in CSS', '', {
  3773.             id: '_reveal',
  3774.             tabIndex: 0,
  3775.             style: 'float: right',
  3776.             title: 'You can copy parts of it to override them in your custom CSS',
  3777.           }),
  3778.           $new('.column', [
  3779.             $new('textarea#css', {spellcheck: false}),
  3780.             $new('textarea#_cssApp', {spellcheck: false, hidden: true, readOnly: true, rows: 30}),
  3781.           ]),
  3782.         ]),
  3783.         $new('li', {style: 'display: flex; justify-content: space-between;'}, [
  3784.           $new('div',
  3785.             $newLink('Custom host rules:', `${MPIV_BASE_URL}Custom-host-rules`)),
  3786.           $new('div', {style: 'white-space: pre-line'}, [
  3787.             'To disable, put any symbol except ', $new('code', 'a..z 0..9 - .'),
  3788.             '\nin "d" value, for example ', $new('code', '"d": "!foo.com"'),
  3789.           ]),
  3790.           $new('div',
  3791.             $new('input#_search',
  3792.               {type: 'search', placeholder: 'Search', style: 'width: 10em; margin-left: 1em'})),
  3793.         ]),
  3794.         $new('li', {
  3795.           style: 'margin-left: -3px; margin-right: -3px; overflow-y: auto; ' +
  3796.                  'padding-left: 3px; padding-right: 3px;',
  3797.         }, [
  3798.           $new('div#_rules.column',
  3799.             $new('textarea#css', {spellcheck: false, rows: 1})),
  3800.         ]),
  3801.         $new('li', [
  3802.           $new('div#_installLoading', {hidden: true}, 'Loading...'),
  3803.           $new('div#_installHint', {hidden: true}, [
  3804.             'Double-click the rule (or select and press Enter) to add it. ',
  3805.             'Click ', $new('code', 'Apply'), ' or ', $new('code', 'OK'), ' to confirm.',
  3806.           ]),
  3807.           $newLink('Install rule from repository...', `${MPIV_BASE_URL}Rules`, {id: '_install'}),
  3808.         ]),
  3809.       ]),
  3810.       $new('div', {style: 'text-align:center'}, [
  3811.         $new('button#_ok', {accessKey: 'o'}, 'OK'),
  3812.         $new('button#_apply', {accessKey: 'a'}, 'Apply'),
  3813.         $new('button#_import', {style: 'margin-right: 0'}, 'Import'),
  3814.         $new('button#_export', {style: 'margin-left: 0'}, 'Export'),
  3815.         $new('button#_cancel', 'Cancel'),
  3816.         $new('div#_exportNotification', {hidden: true}, 'Copied to clipboard'),
  3817.       ]),
  3818.     ]),
  3819.   ];
  3820. }
  3821.  
  3822. function createGlobalStyle() {
  3823.   App.globalStyle = /*language=CSS*/ (String.raw`
  3824. #\mpiv-bar {
  3825.   position: fixed;
  3826.   z-index: 2147483647;
  3827.   top: 0;
  3828.   left: 0;
  3829.   right: 0;
  3830.   opacity: 0;
  3831.   transition: opacity 1s ease .25s;
  3832.   text-align: center;
  3833.   font-family: sans-serif;
  3834.   font-size: 15px;
  3835.   font-weight: bold;
  3836.   background: #0005;
  3837.   color: white;
  3838.   padding: 4px 10px;
  3839.   text-shadow: .5px .5px 2px #000;
  3840. }
  3841. #\mpiv-bar.\mpiv-show,
  3842. #\mpiv-bar[data-force] {
  3843.   opacity: 1;
  3844. }
  3845. #\mpiv-bar[data-zoom]::after {
  3846.   content: " (" attr(data-zoom) ")";
  3847.   opacity: .8;
  3848. }
  3849. #\mpiv-popup.\mpiv-show {
  3850.   display: inline;
  3851. }
  3852. #\mpiv-popup {
  3853.   display: none;
  3854.   cursor: none;
  3855. ${cfg.uiFadein ? String.raw`
  3856.   animation: .2s \mpiv-fadein both;
  3857.   transition: box-shadow .25s, background-color .25s;
  3858.   ` : ''}
  3859. ${App.popupStyleBase = `
  3860.   border: none;
  3861.   box-sizing: border-box;
  3862.   background-size: cover;
  3863.   position: fixed;
  3864.   z-index: 2147483647;
  3865.   padding: 0;
  3866.   margin: 0;
  3867.   top: 0;
  3868.   left: 0;
  3869.   width: auto;
  3870.   height: auto;
  3871.   transform-origin: center;
  3872.   max-width: none;
  3873.   max-height: none;
  3874. `}
  3875. }
  3876. #\mpiv-popup.\mpiv-show {
  3877.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3878.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3879.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3880.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3881. }
  3882. #\mpiv-popup.\mpiv-show[loaded] {
  3883.   background-color: ${Util.color('Background')};
  3884.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3885. }
  3886. #\mpiv-popup[data-gallery-flip] {
  3887.   animation: none;
  3888.   transition: none;
  3889. }
  3890. #\mpiv-popup[data-no-aa],
  3891. #\mpiv-popup.\mpiv-zoom-max {
  3892.   image-rendering: pixelated;
  3893. }
  3894. #\mpiv-setup {
  3895. }
  3896. @keyframes \mpiv-fadein {
  3897.   from {
  3898.     opacity: 0;
  3899.     border-color: transparent;
  3900.   }
  3901.   to {
  3902.     opacity: 1;
  3903.   }
  3904. }
  3905. ` + (cfg.globalStatus ? String.raw`
  3906. :root.\mpiv-loading:not(.\mpiv-preloading) *:hover {
  3907.   cursor: progress !important;
  3908. }
  3909. :root.\mpiv-edge #\mpiv-popup {
  3910.   cursor: default;
  3911. }
  3912. :root.\mpiv-error *:hover {
  3913.   cursor: not-allowed !important;
  3914. }
  3915. :root.\mpiv-ready *:hover,
  3916. :root.\mpiv-large *:hover {
  3917.   cursor: zoom-in !important;
  3918. }
  3919. :root.\mpiv-shift *:hover {
  3920.   cursor: default !important;
  3921. }
  3922. ` : String.raw`
  3923. [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]):hover {
  3924.   cursor: progress;
  3925. }
  3926. [\mpiv-status~="edge"]:hover {
  3927.   cursor: default;
  3928. }
  3929. [\mpiv-status~="error"]:hover {
  3930.   cursor: not-allowed;
  3931. }
  3932. [\mpiv-status~="ready"]:hover,
  3933. [\mpiv-status~="large"]:hover {
  3934.   cursor: zoom-in;
  3935. }
  3936. [\mpiv-status~="shift"]:hover {
  3937.   cursor: default;
  3938. }
  3939. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3940.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3941.   return App.globalStyle;
  3942. }
  3943.  
  3944. //#region Global utilities
  3945.  
  3946. const clamp = (v, min, max) =>
  3947.   v < min ? min : v > max ? max : v;
  3948.  
  3949. const compareNumbers = (a, b) =>
  3950.   a - b;
  3951.  
  3952. const flattenHtml = str =>
  3953.   str.trim().replace(/\n\s*/g, '');
  3954.  
  3955. const dropEvent = e =>
  3956.   (e.preventDefault(), e.stopPropagation());
  3957.  
  3958. const ensureArray = v =>
  3959.   Array.isArray(v) ? v : [v];
  3960.  
  3961. /** @param {KeyboardEvent} e */
  3962. const eventModifiers = e =>
  3963.   (e.altKey ? '!' : '') +
  3964.   (e.ctrlKey ? '^' : '') +
  3965.   (e.metaKey ? '#' : '') +
  3966.   (e.shiftKey ? '+' : '');
  3967.  
  3968. const isFunction = val => typeof val === 'function';
  3969.  
  3970. const isVideo = el => el && el.tagName === 'VIDEO';
  3971.  
  3972. const now = performance.now.bind(performance);
  3973.  
  3974. const sumProps = (...props) => {
  3975.   let sum = 0;
  3976.   for (const p of props)
  3977.     sum += parseFloat(p) || 0;
  3978.   return sum;
  3979. };
  3980.  
  3981. const tryCatch = function (fn, ...args) {
  3982.   try {
  3983.     return fn.apply(this, args);
  3984.   } catch (e) {}
  3985. };
  3986.  
  3987. const tryJSON = str =>
  3988.   tryCatch(JSON.parse, str);
  3989.  
  3990. const pick = (obj, path, fn) => (
  3991.   obj = path.split(/[[.]/).reduce((res, k) => res && res[k.endsWith(']') ? k.slice(0, -1) : k], obj)
  3992. ) && (fn ? fn(obj) : obj);
  3993.  
  3994. const $ = (sel, node = doc) =>
  3995.   node.querySelector(sel) || false;
  3996.  
  3997. const $$ = (sel, node = doc) =>
  3998.   node.querySelectorAll(sel);
  3999.  
  4000. const $new = (sel, props, children) => {
  4001.   if (typeof sel !== 'string') {
  4002.     children = props;
  4003.     props = sel;
  4004.     sel = '';
  4005.   }
  4006.   if (!children && props != null && ({}).toString.call(props) !== '[object Object]') {
  4007.     children = props;
  4008.     props = null;
  4009.   }
  4010.   const isFrag = sel === 'fragment';
  4011.   const [, tag, id, cls] = sel.match(/^(\w*)(?:#([^.]+))?(?:\.(.+))?$/);
  4012.   const el = isFrag ? doc.createDocumentFragment() : doc.createElement(tag || 'div');
  4013.   if (id) el.id = id;
  4014.   if (cls) el.className = cls.replace(/\./g, ' ');
  4015.   if (props) {
  4016.     for (const [k, v] of Object.entries(props)) {
  4017.       if (k.startsWith('data-')) el.setAttribute(k, v);
  4018.       else el[k] = v;
  4019.     }
  4020.   }
  4021.   if (children != null) {
  4022.     if (Array.isArray(children))
  4023.       el.append(...children.filter(Boolean));
  4024.     else if (children instanceof Node)
  4025.       el.appendChild(children);
  4026.     else
  4027.       el.textContent = children;
  4028.   }
  4029.   return el;
  4030. };
  4031.  
  4032. const $css = (el, props) =>
  4033.   Object.entries(props).forEach(([k, v]) =>
  4034.     el.style.setProperty(k, v, 'important'));
  4035.  
  4036. const $parseHtml = str =>
  4037.   new DOMParser().parseFromString(str, 'text/html');
  4038.  
  4039. const $many = (q, doc) => {
  4040.   for (const selector of ensureArray(q)) {
  4041.     const el = selector && $(selector, doc);
  4042.     if (el)
  4043.       return el;
  4044.   }
  4045. };
  4046.  
  4047. const $prop = (sel, prop, node = doc) =>
  4048.   (node = $(sel, node)) && node[prop] || '';
  4049.  
  4050. const $propUp = (node, prop) =>
  4051.   (node = node.closest(`[${prop}]`)) &&
  4052.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  4053.   '';
  4054.  
  4055. const $remove = node =>
  4056.   node && node.remove();
  4057.  
  4058. //#endregion
  4059. //#region Init
  4060.  
  4061. nonce = ($('script[nonce]') || {}).nonce || '';
  4062.  
  4063. Config.load({save: true}).then(res => {
  4064.   cfg = res;
  4065.   if (Menu) Menu.register();
  4066.  
  4067.   if (doc.body) App.checkImageTab();
  4068.   else addEventListener('DOMContentLoaded', App.checkImageTab, {once: true});
  4069.  
  4070.   addEventListener('mouseover', Events.onMouseOver, true);
  4071.   addEventListener('contextmenu', Events.onContext, true);
  4072.   addEventListener('keydown', Events.onKeyDown, true);
  4073.   if (['gf.qytechs.cn', 'github.com'].includes(hostname))
  4074.     addEventListener('click', setupClickedRule, true);
  4075.   addEventListener('message', App.onMessage, true);
  4076. });
  4077.  
  4078. //#endregion

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