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Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

当前为 2020-04-16 提交的版本，查看 最新版本。

  1. /*
  2. // ==UserScript==
  3. // @name        Mouseover Popup Image Viewer
  4. // @namespace   https://github.com/tophf
  5. // @description Shows images and videos behind links and thumbnails.
  6.  
  7. // @include     *
  8. // @connect     *
  9.  
  10. // allow rule installer in config dialog https://w9p.co/userscripts/mpiv/more_host_rules.html
  11. // @connect     w9p.co
  12.  
  13. // @grant       GM_getValue
  14. // @grant       GM_setValue
  15. // @grant       GM_xmlhttpRequest
  16. // @grant       GM_download
  17. // @grant       GM_openInTab
  18. // @grant       GM_registerMenuCommand
  19.  
  20. // @version     1.1.10
  21. // @author      tophf
  22.  
  23. // @original-version 2017.9.29
  24. // @original-author  kuehlschrank
  25.  
  26. // @supportURL  https://github.com/tophf/mpiv/issues
  27. // @homepage    https://w9p.co/userscripts/mpiv/
  28. // @icon        https://w9p.co/userscripts/mpiv/icon.png
  29. // ==/UserScript==
  30. */
  31.  
  32. 'use strict';
  33.  
  34. //#region Globals
  35.  
  36. /** @type mpiv.Config */
  37. let cfg;
  38. /** @type mpiv.AppInfo */
  39. let ai = {rule: {}};
  40. /** @type Element */
  41. let elConfig;
  42.  
  43. const undefined = void 0; // eslint-disable-line no-shadow-restricted-names, no-redeclare
  44. const doc = document;
  45. const hostname = location.hostname;
  46. const dotDomain = '.' + hostname;
  47. const isGoogleDomain = /(^|\.)google(\.com?)?(\.\w+)?$/.test(hostname);
  48. const isGoogleImages = isGoogleDomain && /[&?]tbm=isch(&|$)/.test(location.search);
  49.  
  50. const PREFIX = 'mpiv-';
  51. const STATUS_ATTR = `${PREFIX}status`;
  52. const MSG = Object.assign({}, ...[
  53.   'getViewSize',
  54.   'viewSize',
  55. ].map(k => ({[k]: `${PREFIX}${k}`})));
  56. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  57. // time for volatile things to settle down meanwhile we postpone action
  58. // examples: loading image from cache, quickly moving mouse over one element to another
  59. const SETTLE_TIME = 50;
  60. // used to detect JS code in host rules
  61. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  62. const ZOOM_MAX = 16;
  63.  
  64. //#endregion
  65.  
  66. const App = {
  67.  
  68.   activate(info, event) {
  69.     const {match, node, rule, url} = info;
  70.     if (elConfig) console.info({node, rule, url, match});
  71.     if (ai.node) App.deactivate();
  72.     ai = info;
  73.     ai.force = event.ctrlKey;
  74.     ai.gNum = 0;
  75.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  76.     Util.suppressTooltip();
  77.     Calc.updateViewSize();
  78.     Events.toggle(true);
  79.     Events.trackMouse(event);
  80.     if (ai.force) {
  81.       App.start();
  82.     } else if (cfg.start === 'auto' && !rule.manual) {
  83.       App.belate();
  84.     } else {
  85.       Status.set('ready');
  86.     }
  87.   },
  88.  
  89.   belate() {
  90.     if (cfg.preload) {
  91.       ai.preloadStart = now();
  92.       App.start();
  93.       Status.set('+preloading');
  94.       setTimeout(Status.set, cfg.delay, '-preloading');
  95.     } else {
  96.       ai.timer = setTimeout(App.start, cfg.delay);
  97.     }
  98.   },
  99.  
  100.   checkProgress({start} = {}) {
  101.     const p = ai.popup;
  102.     if (!p) return;
  103.     const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  104.     const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  105.     if (h) {
  106.       const scale = !ai.force && Math.max(w / (ai.rect.width || 1), h / (ai.rect.height || 1));
  107.       if (scale && scale < cfg.scale) {
  108.         App.deactivate();
  109.         return 'abort';
  110.       }
  111.       App.stopTimers();
  112.       const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  113.       if (wait > 0) {
  114.         ai.timer = setTimeout(App.checkProgress, wait);
  115.       } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  116.         App.handleError({type: 'error'});
  117.       } else {
  118.         App.commit();
  119.       }
  120.       return;
  121.     }
  122.     if (start) {
  123.       clearInterval(ai.timerProgress);
  124.       ai.timerProgress = setInterval(App.checkProgress, 150);
  125.     }
  126.   },
  127.  
  128.   async commit() {
  129.     App.updateStyles();
  130.     Calc.naturalSize();
  131.     const p = ai.popup;
  132.     p.className = `${PREFIX}show`;
  133.     p.removeAttribute('style');
  134.     Calc.updateExtras();
  135.     Calc.updateScales();
  136.     Status.set(false);
  137.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  138.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  139.     if (willMove)
  140.       Popup.move();
  141.     Bar.updateName();
  142.     Bar.updateDetails();
  143.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  144.                ai.nheight > p.clientHeight + ai.extras.h;
  145.     if (ai.large)
  146.       Status.set('large');
  147.     // FF renders a blank bg+border first; I couldn't find a proper solution
  148.     if (p.complete && isFF && ai.large)
  149.       p.style.backgroundImage = `url('${p.src}')`;
  150.   },
  151.  
  152.   deactivate({wait} = {}) {
  153.     App.stopTimers();
  154.     if (ai.popup)
  155.       ai.popup.removeEventListener('load', Popup.onLoad);
  156.     if (ai.req)
  157.       tryCatch.call(ai.req, ai.req.abort);
  158.     if (ai.tooltip)
  159.       ai.tooltip.node.title = ai.tooltip.text;
  160.     Status.set(false);
  161.     Bar.set(false);
  162.     Events.toggle(false);
  163.     Popup.destroy();
  164.     if (wait) {
  165.       App.enabled = false;
  166.       setTimeout(App.enable, 200);
  167.     }
  168.     ai = {rule: {}};
  169.   },
  170.  
  171.   enable() {
  172.     App.enabled = true;
  173.   },
  174.  
  175.   handleError(e, rule = ai.rule) {
  176.     if (isGoogleImages && cfg.xhr && !ai.xhr) {
  177.       ai.xhr = true;
  178.       console.debug('Retrying in XHR mode', ai.url);
  179.       App.startSingle();
  180.       return;
  181.     }
  182.     if (rule && rule.onerror === 'skip')
  183.       return;
  184.     const fe = Util.formatError(e, rule);
  185.     if (!rule || !ai.urls || !ai.urls.length)
  186.       console.warn(fe.consoleFormat, ...fe.consoleArgs);
  187.     if (ai.urls && ai.urls.length) {
  188.       ai.url = ai.urls.shift();
  189.       if (ai.url) {
  190.         App.stopTimers();
  191.         App.startSingle();
  192.       } else {
  193.         App.deactivate();
  194.       }
  195.     } else if (ai.node) {
  196.       Status.set('error');
  197.       Bar.set(fe.message, 'error');
  198.     }
  199.   },
  200.  
  201.   /** @param {MessageEvent} e */
  202.   onMessage(e) {
  203.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  204.       for (const el of doc.getElementsByTagName('iframe')) {
  205.         if (el.contentWindow === e.source) {
  206.           const [w, h] = Calc.frameSize(el, window);
  207.           e.source.postMessage(`${MSG.viewSize}:${w}:${h}`, '*');
  208.           return;
  209.         }
  210.       }
  211.     }
  212.   },
  213.  
  214.   /** @param {MessageEvent} e */
  215.   onMessageChild(e) {
  216.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  217.       window.removeEventListener('message', App.onMessageChild);
  218.       const [w, h] = e.data.split(':').slice(1).map(parseFloat);
  219.       if (w && h) ai.view = {w, h};
  220.     }
  221.   },
  222.  
  223.   start() {
  224.     // check explicitly as the cursor may have moved into an iframe so mouseout wasn't reported
  225.     if (!ai.node.closest(':hover')) {
  226.       App.deactivate();
  227.       return;
  228.     }
  229.     App.updateStyles();
  230.     if (ai.gallery)
  231.       App.startGallery();
  232.     else
  233.       App.startSingle();
  234.   },
  235.  
  236.   startSingle() {
  237.     Status.loading();
  238.     ai.imageUrl = null;
  239.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  240.       Remoting.findRedirect();
  241.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  242.       App.startFromQ();
  243.     } else {
  244.       Popup.create(ai.url);
  245.       Ruler.runC();
  246.     }
  247.   },
  248.  
  249.   async startFromQ() {
  250.     try {
  251.       const {responseText, doc, finalUrl} = await Remoting.getDoc(ai.url);
  252.       const url = Ruler.runQ(responseText, doc, finalUrl);
  253.       if (!url)
  254.         throw 'The "q" rule did not produce any URL.';
  255.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  256.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  257.         if (!info || !info.url)
  258.           throw `Couldn't follow URL: ${url}`;
  259.         Object.assign(ai, info);
  260.         App.startSingle();
  261.       } else {
  262.         Popup.create(url, finalUrl);
  263.         Ruler.runC(responseText, doc);
  264.       }
  265.     } catch (e) {
  266.       App.handleError(e);
  267.     }
  268.   },
  269.  
  270.   async startGallery() {
  271.     Status.loading();
  272.     try {
  273.       const startUrl = ai.url;
  274.       const p = ai.rule.s === 'gallery' ? {} : await Remoting.getDoc(startUrl);
  275.       const items = await new Promise(resolve => {
  276.         const it = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, ai.node,
  277.           resolve);
  278.         if (Array.isArray(it))
  279.           resolve(it);
  280.       });
  281.       // bail out if the gallery's async callback took too long
  282.       if (ai.url !== startUrl) return;
  283.       ai.gNum = items.length;
  284.       ai.gItems = items.length && items;
  285.       if (ai.gItems) {
  286.         const i = items.index;
  287.         ai.gIndex = i === (i | 0) && items[i] ? i | 0 :
  288.           typeof i === 'string' ? clamp(items.findIndex(x => x.url === i), 0) :
  289.             Gallery.findIndex(ai.url);
  290.         setTimeout(Gallery.next);
  291.       } else {
  292.         throw 'Empty gallery';
  293.       }
  294.     } catch (e) {
  295.       App.handleError(e);
  296.     }
  297.   },
  298.  
  299.   stopTimers() {
  300.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  301.       clearTimeout(ai[timer]);
  302.     clearInterval(ai.timerProgress);
  303.   },
  304.  
  305.   toggleZoom({keepScale} = {}) {
  306.     const p = ai.popup;
  307.     if (!p || !ai.scales || ai.scales.length < 2)
  308.       return;
  309.     ai.zoomed = !ai.zoomed;
  310.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  311.     if (ai.zooming)
  312.       p.classList.add(`${PREFIX}zooming`);
  313.     Popup.move();
  314.     Bar.updateDetails();
  315.     Status.set(ai.zoomed ? 'zoom' : false);
  316.     return ai.zoomed;
  317.   },
  318.  
  319.   updateStyles() {
  320.     Util.addStyle('global',
  321.       (App.globalStyle || createGlobalStyle()) +
  322.       (cfg.css.includes('{') ? cfg.css : `#${PREFIX}-popup {${(cfg.css)}}`));
  323.     Util.addStyle('rule', ai.rule.css || '');
  324.   },
  325. };
  326.  
  327. const Bar = {
  328.  
  329.   set(label, className) {
  330.     let b = ai.bar;
  331.     if (typeof label !== 'string') {
  332.       $remove(b);
  333.       ai.bar = null;
  334.       return;
  335.     }
  336.     if (!b) b = ai.bar = $create('div', {id: `${PREFIX}bar`});
  337.     App.updateStyles();
  338.     Bar.updateDetails();
  339.     Bar.show();
  340.     b.innerHTML = label;
  341.     if (!b.parentNode) {
  342.       doc.body.appendChild(b);
  343.       Util.forceLayout(b);
  344.     }
  345.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  346.   },
  347.  
  348.   show() {
  349.     clearTimeout(ai.timerBar);
  350.     ai.bar.style.removeProperty('opacity');
  351.     ai.timerBar = setTimeout(() => ai.bar && $css(ai.bar, {opacity: 0}), 3000);
  352.   },
  353.  
  354.   updateName() {
  355.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  356.     if (gi) {
  357.       const item = gi[i];
  358.       const noDesc = !gi.some(_ => _.desc);
  359.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  360.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  361.         item.desc,
  362.       ].filter(Boolean).join(' - ')}`;
  363.       Bar.set(c.trim() || ' ', 'gallery', true);
  364.     } else if ('caption' in ai) {
  365.       Bar.set(ai.caption, 'caption');
  366.     } else if (ai.tooltip) {
  367.       Bar.set(ai.tooltip.text, 'tooltip');
  368.     } else {
  369.       Bar.set(' ', 'info');
  370.     }
  371.   },
  372.  
  373.   updateDetails() {
  374.     if (!ai.bar) return;
  375.     const zoom = ai.nwidth && `${
  376.       Math.round(ai.scale * 100)
  377.     }%, ${
  378.       ai.nwidth
  379.     } x ${
  380.       ai.nheight
  381.     } px, ${
  382.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  383.     } MP`.replace(/\x20/g, '\xA0');
  384.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  385.       if (zoom) ai.bar.dataset.zoom = zoom;
  386.       else delete ai.bar.dataset.zoom;
  387.       Bar.show();
  388.     }
  389.   },
  390. };
  391.  
  392. const Calc = {
  393.  
  394.   frameSize(elFrame, parentWindow) {
  395.     if (!elFrame) return;
  396.     const r = elFrame.getBoundingClientRect();
  397.     const w = clamp(r.width, 0, parentWindow.innerWidth - r.left);
  398.     const h = clamp(r.height, 0, parentWindow.innerHeight - r.top);
  399.     return [w, h];
  400.   },
  401.  
  402.   generateScales(fit) {
  403.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  404.     const zoomStep = cfg.zoomStep / 100;
  405.     const arr = [scale];
  406.     if (fit !== 1) {
  407.       const diff = goal / scale;
  408.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  409.       const step = steps && Math.pow(diff, 1 / steps);
  410.       for (let i = steps; --i > 0;)
  411.         arr.push((scale *= step));
  412.       arr.push(scale = goal);
  413.     }
  414.     while ((scale *= zoomStep) <= ZOOM_MAX)
  415.       arr.push(scale);
  416.     return arr;
  417.   },
  418.  
  419.   naturalSize() {
  420.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  421.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  422.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  423.     if (p.clientWidth > nw) {
  424.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  425.       nh = ai.nheight = w / nw * nh | 0;
  426.       nw = ai.nwidth = w;
  427.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  428.     }
  429.   },
  430.  
  431.   rect() {
  432.     let {node, rule} = ai;
  433.     let n = rule.rect && node.closest(rule.rect);
  434.     if (n) return n.getBoundingClientRect();
  435.     const nested = node.getElementsByTagName('*');
  436.     let maxArea = 0;
  437.     let maxBounds;
  438.     n = node;
  439.     for (let i = 0; n; n = nested[i++]) {
  440.       const bounds = n.getBoundingClientRect();
  441.       const area = bounds.width * bounds.height;
  442.       if (area > maxArea) {
  443.         maxArea = area;
  444.         maxBounds = bounds;
  445.         node = n;
  446.       }
  447.     }
  448.     return maxBounds;
  449.   },
  450.  
  451.   placement() {
  452.     if (!ai.popup) return;
  453.     let x, y;
  454.     const {cx, cy, extras, view} = ai;
  455.     const vw = view.w - extras.outw;
  456.     const vh = view.h - extras.outh;
  457.     const w = ai.scale * ai.nwidth + extras.inw;
  458.     const h = ai.scale * ai.nheight + extras.inh;
  459.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  460.       const r = ai.rect;
  461.       const rx = (r.left + r.right) / 2;
  462.       const ry = (r.top + r.bottom) / 2;
  463.       if (vw - r.right - 40 > w || w < r.left - 40) {
  464.         if (h < vh - 60)
  465.           y = clamp(ry - h / 2, 30, vh - h - 30);
  466.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  467.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  468.         if (w < vw - 60)
  469.           x = clamp(rx - w / 2, 30, vw - w - 30);
  470.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  471.       }
  472.     }
  473.     if (x == null)
  474.       x = (vw - w) * (vw > w ? .5 : clamp(5 / 3 * (cx / vw - .2), 0, 1));
  475.     if (y == null)
  476.       y = (vh - h) * (vh > h ? .5 : clamp(5 / 3 * (cy / vh - .2), 0, 1));
  477.     return {
  478.       x: Math.round(x + extras.o),
  479.       y: Math.round(y + extras.o),
  480.       w: Math.round(w),
  481.       h: Math.round(h),
  482.     };
  483.   },
  484.  
  485.   scaleBiggerThan(scale, i, arr) {
  486.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  487.   },
  488.  
  489.   scaleIndex(dir) {
  490.     const i = ai.scales.indexOf(ai.scale);
  491.     if (i >= 0) return i + dir;
  492.     for (
  493.       let len = ai.scales.length,
  494.         i = dir > 0 ? 0 : len - 1;
  495.       i >= 0 && i < len;
  496.       i += dir
  497.     ) {
  498.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  499.         return i;
  500.     }
  501.     return -1;
  502.   },
  503.  
  504.   scaleForFirstZoom(keepScale) {
  505.     const z = ai.scaleZoom;
  506.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  507.   },
  508.  
  509.   updateExtras() {
  510.     const s = getComputedStyle(ai.popup);
  511.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  512.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  513.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  514.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  515.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  516.     ai.extras = {
  517.       inw, inh,
  518.       outw, outh,
  519.       o: o2 / 2,
  520.       w: inw + outw,
  521.       h: inh + outh,
  522.     };
  523.   },
  524.  
  525.   updateScales() {
  526.     const fit = Math.min(
  527.       (ai.view.w - ai.extras.w) / ai.nwidth,
  528.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  529.     const isCustom = !cfg.fit && cfg.scales.length;
  530.     let cutoff = Math.min(1, fit);
  531.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  532.     if (isCustom) {
  533.       const dst = [];
  534.       for (const scale of cfg.scales) {
  535.         const val = parseFloat(scale) || fit;
  536.         dst.push(val);
  537.         if (isCustom && typeof scale === 'string') {
  538.           if (scale.includes('!')) cutoff = val;
  539.           if (scale.includes('*')) scaleZoom = val;
  540.         }
  541.       }
  542.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  543.     } else {
  544.       ai.scales = Calc.generateScales(fit);
  545.     }
  546.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  547.     ai.scaleFit = fit;
  548.     ai.scaleZoom = scaleZoom;
  549.   },
  550.  
  551.   updateViewSize() {
  552.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  553.     ai.view = {
  554.       w: view.clientWidth,
  555.       h: view.clientHeight,
  556.     };
  557.     if (window === top) return;
  558.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  559.     if (w && h) {
  560.       ai.view = {w, h};
  561.     } else {
  562.       window.addEventListener('message', App.onMessageChild);
  563.       parent.postMessage(MSG.getViewSize, '*');
  564.     }
  565.   },
  566. };
  567.  
  568. class Config {
  569.  
  570.   constructor({data: c = GM_getValue('cfg'), save}) {
  571.     if (typeof c === 'string')
  572.       c = tryCatch(JSON.parse, c);
  573.     if (typeof c !== 'object' || !c)
  574.       c = {};
  575.     const {DEFAULTS} = Config;
  576.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  577.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  578.         '';
  579.     if (c.version !== DEFAULTS.version) {
  580.       if (typeof c.hosts === 'string')
  581.         c.hosts = c.hosts.split('\n')
  582.           .map(s => tryCatch(JSON.parse, s) || s)
  583.           .filter(Boolean);
  584.       if (c.close === true || c.close === false)
  585.         c.zoomOut = c.close ? 'auto' : 'stay';
  586.       for (const key in DEFAULTS)
  587.         if (typeof c[key] !== typeof DEFAULTS[key])
  588.           c[key] = DEFAULTS[key];
  589.       if (c.version === 3 && c.scales[0] === 0)
  590.         c.scales[0] = '0!';
  591.       for (const key in c)
  592.         if (!(key in DEFAULTS))
  593.           delete c[key];
  594.       c.version = DEFAULTS.version;
  595.       if (save)
  596.         GM_setValue('cfg', c);
  597.     }
  598.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  599.       App.globalStyle = '';
  600.     if (!Array.isArray(c.scales))
  601.       c.scales = [];
  602.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  603.     Object.assign(this, DEFAULTS, c);
  604.   }
  605. }
  606.  
  607. /** @type mpiv.Config */
  608. Config.DEFAULTS = Object.assign(Object.create(null), {
  609.   center: false,
  610.   css: '',
  611.   delay: 500,
  612.   fit: '',
  613.   globalStatus: false,
  614.   // prefer ' inside rules because " will be displayed as \"
  615.   // example: "img[src*='icon']"
  616.   hosts: [{
  617.     name: 'No popup for YouTube thumbnails',
  618.     d: 'www.youtube.com',
  619.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  620.     s: '',
  621.   }, {
  622.     name: 'No popup for SVG/PNG icons',
  623.     d: '',
  624.     e: "img[src*='icon']",
  625.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  626.     s: '',
  627.   }],
  628.   imgtab: false,
  629.   preload: false,
  630.   scale: 1.25,
  631.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  632.   start: 'auto',
  633.   uiBackgroundColor: '#ffffff',
  634.   uiBackgroundOpacity: 100,
  635.   uiBorderColor: '#000000',
  636.   uiBorderOpacity: 100,
  637.   uiBorder: 0,
  638.   uiShadowColor: '#000000',
  639.   uiShadowOpacity: 80,
  640.   uiShadow: 20,
  641.   uiPadding: 0,
  642.   uiMargin: 0,
  643.   version: 6,
  644.   xhr: true,
  645.   zoom: 'context',
  646.   zoomOut: 'auto',
  647.   zoomStep: 133,
  648. });
  649.  
  650. const Events = {
  651.  
  652.   hoverData: [],
  653.   hoverTimer: 0,
  654.  
  655.   onMouseOver(e) {
  656.     if (!App.enabled || e.shiftKey || ai.zoomed)
  657.       return;
  658.     let node = e.target;
  659.     if (node === ai.popup ||
  660.         node === doc.body ||
  661.         node === doc.documentElement ||
  662.         node === elConfig ||
  663.         ai.gallery && ai.rectHovered)
  664.       return;
  665.     if (node.shadowRoot)
  666.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  667.     // we don't want to process everything in the path of a quickly moving mouse cursor
  668.     Events.hoverData = [now(), e, node];
  669.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  670.   },
  671.  
  672.   onMouseOverThrottled() {
  673.     const [start, e, node] = Events.hoverData;
  674.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  675.     const wait = start + SETTLE_TIME - now();
  676.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  677.     if (Events.hoverTimer)
  678.       return;
  679.     if (!node.closest(':hover'))
  680.       return;
  681.     if (!Ruler.rules)
  682.       Ruler.init();
  683.     let a;
  684.     const tag = node.tagName;
  685.     const src = node.currentSrc || node.src;
  686.     const isPic = tag === 'IMG' || tag === 'VIDEO' && /\.(webm|mp4)(\?|$)/.test(src);
  687.     const info =
  688.       // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  689.       tag !== 'A' &&
  690.         RuleMatcher.find(isPic && !src.startsWith('data:') && Util.rel2abs(src), node) ||
  691.       (a = node.closest('A')) &&
  692.         RuleMatcher.findForLink(a) ||
  693.       isPic &&
  694.         {node, rule: {}, url: src};
  695.     if (info && info.url && info.node !== ai.node)
  696.       App.activate(info, e);
  697.   },
  698.  
  699.   onMouseOut(e) {
  700.     if (!e.relatedTarget && !e.shiftKey)
  701.       App.deactivate();
  702.   },
  703.  
  704.   onMouseOutShadow(e) {
  705.     const root = e.target.shadowRoot;
  706.     if (root) {
  707.       root.removeEventListener('mouseover', Events.onMouseOver);
  708.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  709.     }
  710.   },
  711.  
  712.   onMouseMove(e) {
  713.     Events.trackMouse(e);
  714.     if (e.shiftKey) {
  715.       ai.lazyUnload = true;
  716.     } else if (!ai.zoomed && !ai.rectHovered) {
  717.       App.deactivate();
  718.     } else if (ai.zoomed) {
  719.       Popup.move();
  720.       const {cx, cy, view: {w, h}} = ai;
  721.       const bx = w / 6;
  722.       const by = h / 6;
  723.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  724.       Status.set(`${onEdge ? '+' : '-'}edge`);
  725.     }
  726.   },
  727.  
  728.   onMouseDown({shiftKey, button}) {
  729.     if (button === 0 && shiftKey && ai.popup && ai.popup.controls) {
  730.       ai.controlled = ai.zoomed = true;
  731.     } else if (button === 2 || shiftKey) {
  732.       // we ignore RMB and Shift
  733.     } else {
  734.       App.deactivate({wait: true});
  735.       document.addEventListener('mouseup', App.enable, {once: true});
  736.     }
  737.   },
  738.  
  739.   onMouseScroll(e) {
  740.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  741.     if (ai.zoomed) {
  742.       Events.zoomInOut(dir);
  743.     } else if (ai.gNum > 1 && ai.popup) {
  744.       Gallery.next(-dir);
  745.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  746.       App.toggleZoom();
  747.     } else {
  748.       App.deactivate();
  749.       return;
  750.     }
  751.     dropEvent(e);
  752.   },
  753.  
  754.   onKeyDown(e) {
  755.     switch (e.key) {
  756.       case 'Shift':
  757.         Status.set('+shift');
  758.         if (ai.popup && 'controls' in ai.popup)
  759.           ai.popup.controls = true;
  760.         break;
  761.       case 'Control':
  762.         if (!ai.popup && (cfg.start !== 'auto' || ai.rule.manual))
  763.           App.start();
  764.         break;
  765.     }
  766.   },
  767.  
  768.   onKeyUp(e) {
  769.     switch (e.key.length > 1 ? e.key : e.code) {
  770.       case 'Shift':
  771.         Status.set('-shift');
  772.         if ((ai.popup || {}).controls)
  773.           ai.popup.controls = false;
  774.         if (ai.controlled) {
  775.           ai.controlled = false;
  776.           return;
  777.         }
  778.         if (ai.popup && (ai.zoomed || ai.rectHovered !== false))
  779.           App.toggleZoom();
  780.         else
  781.           App.deactivate({wait: true});
  782.         break;
  783.       case 'Control':
  784.         break;
  785.       case 'Escape':
  786.         App.deactivate({wait: true});
  787.         break;
  788.       case 'ArrowRight':
  789.       case 'KeyJ':
  790.         dropEvent(e);
  791.         Gallery.next(1);
  792.         break;
  793.       case 'ArrowLeft':
  794.       case 'KeyK':
  795.         dropEvent(e);
  796.         Gallery.next(-1);
  797.         break;
  798.       case 'KeyD': {
  799.         dropEvent(e);
  800.         Remoting.saveFile();
  801.         break;
  802.       }
  803.       case 'KeyT':
  804.         ai.lazyUnload = true;
  805.         GM_openInTab(Util.tabFixUrl() || ai.popup.src);
  806.         App.deactivate();
  807.         break;
  808.       default:
  809.         App.deactivate({wait: true});
  810.     }
  811.   },
  812.  
  813.   onContext(e) {
  814.     if (e.shiftKey) return;
  815.     if (cfg.zoom === 'context' && ai.popup && App.toggleZoom()) {
  816.       dropEvent(e);
  817.     } else if (!ai.popup && (cfg.start === 'context' || (cfg.start === 'auto' && ai.rule.manual))) {
  818.       App.start();
  819.       dropEvent(e);
  820.     } else {
  821.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  822.     }
  823.   },
  824.  
  825.   pierceShadow(node, x, y) {
  826.     for (let root; (root = node.shadowRoot);) {
  827.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  828.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  829.       const inner = root.elementFromPoint(x, y);
  830.       if (!inner || inner === node)
  831.         break;
  832.       node = inner;
  833.     }
  834.     return node;
  835.   },
  836.  
  837.   toggle(enable) {
  838.     const onOff = enable ? doc.addEventListener : doc.removeEventListener;
  839.     const passive = enable ? {passive: true} : undefined;
  840.     onOff.call(doc, 'mousemove', Events.onMouseMove, passive);
  841.     onOff.call(doc, 'mouseout', Events.onMouseOut, passive);
  842.     onOff.call(doc, 'mousedown', Events.onMouseDown, passive);
  843.     onOff.call(doc, 'contextmenu', Events.onContext);
  844.     onOff.call(doc, 'keydown', Events.onKeyDown);
  845.     onOff.call(doc, 'keyup', Events.onKeyUp);
  846.     onOff.call(doc, WHEEL_EVENT, Events.onMouseScroll, enable ? {passive: false} : undefined);
  847.   },
  848.  
  849.   trackMouse(e) {
  850.     const cx = ai.cx = e.clientX;
  851.     const cy = ai.cy = e.clientY;
  852.     const r = ai.rect || (ai.rect = Calc.rect());
  853.     ai.rectHovered =
  854.       cx > r.left - 2 && cx < r.right + 2 &&
  855.       cy > r.top - 2 && cy < r.bottom + 2;
  856.   },
  857.  
  858.   zoomInOut(dir) {
  859.     const i = Calc.scaleIndex(dir);
  860.     const n = ai.scales.length;
  861.     if (i >= 0 && i < n)
  862.       ai.scale = ai.scales[i];
  863.     const zo = cfg.zoomOut;
  864.     if (i <= 0 && zo !== 'stay') {
  865.       if (ai.scaleFit < ai.scale * .99) {
  866.         ai.scales.unshift(ai.scale = ai.scaleFit);
  867.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  868.         App.deactivate({wait: true});
  869.         return;
  870.       }
  871.       ai.zoomed = zo !== 'unzoom';
  872.     } else {
  873.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  874.     }
  875.     if (ai.zooming)
  876.       ai.popup.classList.add(`${PREFIX}zooming`);
  877.     Popup.move();
  878.     Bar.updateDetails();
  879.   },
  880. };
  881.  
  882. const Gallery = {
  883.  
  884.   functionParams: ['text', 'doc', 'url', 'm', 'rule', 'node', 'cb'],
  885.  
  886.   makeParser(g) {
  887.     return (
  888.       typeof g === 'function' ? g :
  889.         typeof g === 'string' ? Util.newFunction(...Gallery.functionParams, g) :
  890.           Gallery.defaultParser
  891.     );
  892.   },
  893.  
  894.   findIndex(gUrl) {
  895.     const sel = gUrl.split('#')[1];
  896.     if (!sel)
  897.       return 0;
  898.     if (/^\d+$/.test(sel))
  899.       return parseInt(sel);
  900.     for (let i = ai.gNum; i--;) {
  901.       let {url} = ai.gItems[i];
  902.       if (Array.isArray(url))
  903.         url = url[0];
  904.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  905.         return i;
  906.     }
  907.     return 0;
  908.   },
  909.  
  910.   next(dir) {
  911.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  912.     const item = ai.gItems[ai.gIndex];
  913.     if (Array.isArray(item.url)) {
  914.       ai.urls = item.url.slice(1);
  915.       ai.url = item.url[0];
  916.     } else {
  917.       ai.urls = null;
  918.       ai.url = item.url;
  919.     }
  920.     Popup.destroy();
  921.     App.startSingle();
  922.     Bar.updateName();
  923.     Gallery.preload(dir);
  924.   },
  925.  
  926.   nextIndex(dir) {
  927.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  928.   },
  929.  
  930.   preload(dir) {
  931.     if (!ai.popup || !dir) return;
  932.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir)].url)[0];
  933.     ai.popup.addEventListener('load', Gallery.preloadOnLoad, {once: true});
  934.   },
  935.  
  936.   preloadOnLoad() {
  937.     $create('img', {src: ai.preloadUrl});
  938.   },
  939.  
  940.   defaultParser(text, doc, docUrl, m, rule) {
  941.     const {g} = rule;
  942.     const qEntry = g.entry;
  943.     const qCaption = ensureArray(g.caption);
  944.     const qImage = g.image;
  945.     const qTitle = g.title;
  946.     const fix =
  947.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  948.       (s => s.trim());
  949.     const items = [...$$(qEntry || qImage, doc)]
  950.       .map(processEntry)
  951.       .filter(Boolean);
  952.     items.title = processTitle();
  953.     items.index =
  954.       typeof g.index === 'string' &&
  955.         Remoting.findImageUrl(tryCatch($, g.index, doc), docUrl) ||
  956.       RX_HAS_CODE.test(g.index) &&
  957.         Util.newFunction('items', 'node', g.index)(items, ai.node) ||
  958.       g.index;
  959.     return items;
  960.  
  961.     function processEntry(entry) {
  962.       const item = {};
  963.       try {
  964.         const img = qEntry ? $(qImage, entry) : entry;
  965.         item.url = fix(Remoting.findImageUrl(img, docUrl), true);
  966.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  967.       } catch (e) {}
  968.       return item.url && item;
  969.     }
  970.  
  971.     function processCaption(selector) {
  972.       const el = $(selector, this) ||
  973.                  $orSelf(selector, this.previousElementSibling) ||
  974.                  $orSelf(selector, this.nextElementSibling);
  975.       return el && fix(el.textContent);
  976.     }
  977.  
  978.     function processTitle() {
  979.       const el = $(qTitle, doc);
  980.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  981.     }
  982.  
  983.     function $orSelf(selector, el) {
  984.       if (el && !el.matches(qEntry))
  985.         return el.matches(selector) ? el : $(selector, el);
  986.     }
  987.   },
  988. };
  989.  
  990. const Popup = {
  991.  
  992.   async create(src, pageUrl) {
  993.     Popup.destroy();
  994.     ai.imageUrl = src;
  995.     if (ai.xhr && src)
  996.       src = await Remoting.getImage(src, pageUrl).catch(App.handleError);
  997.     if (!src) return;
  998.     const isVideo = Util.isVideoUrl(src);
  999.     const p = ai.popup = isVideo ? PopupVideo.create() : $create('img');
  1000.     p.id = `${PREFIX}popup`;
  1001.     p.src = src;
  1002.     p.addEventListener('error', App.handleError);
  1003.     if (ai.zooming)
  1004.       p.addEventListener('transitionend', Popup.onZoom);
  1005.     doc.body.insertBefore(p, ai.bar || undefined);
  1006.     await 0;
  1007.     if (App.checkProgress({start: true}) === 'abort')
  1008.       return;
  1009.     if (p.complete)
  1010.       Popup.onLoad.call(ai.popup);
  1011.     else if (!isVideo)
  1012.       p.addEventListener('load', Popup.onLoad, {once: true});
  1013.   },
  1014.  
  1015.   destroy() {
  1016.     const p = ai.popup;
  1017.     if (!p) return;
  1018.     p.removeEventListener('error', App.handleError);
  1019.     if (typeof p.pause === 'function')
  1020.       p.pause();
  1021.     if (!ai.lazyUnload) {
  1022.       if (p.src.startsWith('blob:'))
  1023.         URL.revokeObjectURL(p.src);
  1024.     }
  1025.     p.remove();
  1026.     ai.zoomed = ai.popup = ai.popupLoaded = null;
  1027.   },
  1028.  
  1029.   move() {
  1030.     const p = Calc.placement();
  1031.     $css(ai.popup, {
  1032.       transform: `translate(${p.x}px, ${p.y}px)`,
  1033.       width: `${p.w}px`,
  1034.       height: `${p.h}px`,
  1035.     });
  1036.   },
  1037.  
  1038.   onLoad() {
  1039.     this.setAttribute('loaded', '');
  1040.     if (ai.popup === this)
  1041.       ai.popupLoaded = true;
  1042.   },
  1043.  
  1044.   onZoom() {
  1045.     this.classList.remove(`${PREFIX}zooming`);
  1046.   },
  1047. };
  1048.  
  1049. const PopupVideo = {
  1050.   create() {
  1051.     ai.bufBar = false;
  1052.     ai.bufStart = now();
  1053.     const shouldMute = new AudioContext().state === 'suspended';
  1054.     return $create('video', {
  1055.       autoplay: true,
  1056.       controls: shouldMute,
  1057.       muted: shouldMute,
  1058.       loop: true,
  1059.       volume: clamp(+GM_getValue('volume') || .5, 0, 1),
  1060.       onprogress: PopupVideo.progress,
  1061.       oncanplaythrough: PopupVideo.progressDone,
  1062.       onvolumechange: PopupVideo.rememberVolume,
  1063.     });
  1064.   },
  1065.  
  1066.   progress() {
  1067.     const {duration} = this;
  1068.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1069.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1070.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1071.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1072.     }
  1073.   },
  1074.  
  1075.   progressDone() {
  1076.     this.onprogress = this.oncanplaythrough = null;
  1077.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1078.       Bar.set(false);
  1079.     Popup.onLoad.call(this);
  1080.   },
  1081.  
  1082.   rememberVolume() {
  1083.     GM_setValue('volume', this.volume);
  1084.   },
  1085. };
  1086.  
  1087. const Ruler = {
  1088. /*
  1089.  'u' works only with URLs so it's ignored if 'html' is true
  1090.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1091.    |foo = url or text must start with foo
  1092.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1093.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1094.  'r' is checked only if 'u' matches first
  1095. */
  1096.   init() {
  1097.     const errors = new Map();
  1098.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1099.     for (const rule of errors.keys())
  1100.       App.handleError('Invalid custom host rule:', rule);
  1101.  
  1102.     // rules that disable previewing
  1103.     const disablers = [
  1104.       dotDomain.endsWith('.stackoverflow.com') && {
  1105.         e: '.post-tag, .post-tag img',
  1106.         s: '',
  1107.       },
  1108.       {
  1109.         u: '||disqus.com/',
  1110.         s: '',
  1111.       },
  1112.     ];
  1113.  
  1114.     // optimization: a rule is created only when on domain
  1115.     const perDomain = [
  1116.       hostname.includes('startpage') && {
  1117.         r: /\boiu=(.+)/,
  1118.         s: '$1',
  1119.         follow: true,
  1120.       },
  1121.       dotDomain.endsWith('.4chan.org') && {
  1122.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1123.         q: '.op .fileText a',
  1124.         css: '#post-preview{display:none}',
  1125.       },
  1126.       hostname.includes('amazon.') && {
  1127.         r: /.+?images\/I\/.+?\./,
  1128.         s: m => {
  1129.           const uh = doc.getElementById('universal-hover');
  1130.           return uh ? '' : m[0] + 'jpg';
  1131.         },
  1132.         css: '#zoomWindow{display:none!important;}',
  1133.       },
  1134.       dotDomain.endsWith('.bing.com') && {
  1135.         e: 'a[m*="murl"]',
  1136.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1137.         s: '$1',
  1138.         html: true,
  1139.       },
  1140.       ...dotDomain.endsWith('.deviantart.com') && [{
  1141.         e: '[data-super-full-img] *, img[src*="/th/"]',
  1142.         s: (m, node) =>
  1143.           $propUp(node, 'data-super-full-img') ||
  1144.           (node = node.dataset.embedId && node.nextElementSibling) &&
  1145.           node.dataset.embedId && node.src,
  1146.       }, {
  1147.         e: '.dev-view-deviation img',
  1148.         s: () => [
  1149.           $('.dev-page-download').href,
  1150.           $('.dev-content-full').src,
  1151.         ].filter(Boolean),
  1152.       }, {
  1153.         e: 'a[data-hook=deviation_link]',
  1154.         q: 'link[as=image]',
  1155.       }] || [],
  1156.       dotDomain.endsWith('.dropbox.com') && {
  1157.         r: /(.+?&size_mode)=\d+(.*)/,
  1158.         s: '$1=5$2',
  1159.       },
  1160.       dotDomain.endsWith('.facebook.com') && {
  1161.         e: 'a[href*="ref=hovercard"]',
  1162.         s: (m, node) =>
  1163.           'https://www.facebook.com/photo.php?fbid=' +
  1164.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1165.         follow: true,
  1166.       },
  1167.       dotDomain.endsWith('.facebook.com') && {
  1168.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1169.         s: (m, node) =>
  1170.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1171.             decodeURIComponent(m[4]),
  1172.         html: true,
  1173.         follow: true,
  1174.       },
  1175.       dotDomain.endsWith('.flickr.com') &&
  1176.       tryCatch(() => unsafeWindow.YUI_config.flickr.api.site_key) && {
  1177.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1178.         s: m => `https://www.flickr.com/services/rest/?${
  1179.           new URLSearchParams({
  1180.             photo_id: m[1],
  1181.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1182.             method: 'flickr.photos.getSizes',
  1183.             format: 'json',
  1184.             nojsoncallback: 1,
  1185.           }).toString()}`,
  1186.         q: text => JSON.parse(text).sizes.size.pop().source,
  1187.       },
  1188.       dotDomain.endsWith('.github.com') && {
  1189.         r: new RegExp([
  1190.           /(avatars.+?&s=)\d+/,
  1191.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1192.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1193.         ].map(rx => rx.source).join('|')),
  1194.         s: m => `https://${
  1195.           m[1] ? `${m[1]}460` :
  1196.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1197.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1198.         }`,
  1199.       },
  1200.       isGoogleImages && {
  1201.         e: 'a[href*="imgres?imgurl="] img',
  1202.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1203.         follow: true,
  1204.       },
  1205.       isGoogleImages && {
  1206.         e: '[data-tbnid] a:not([href])',
  1207.         s: (m, a) => {
  1208.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1209.           new MutationObserver((_, mo) => {
  1210.             mo.disconnect();
  1211.             App.enabled = true;
  1212.             a.alt = a2.innerText;
  1213.             const {left, top} = a.getBoundingClientRect();
  1214.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1215.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1216.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1217.         },
  1218.       },
  1219.       dotDomain.endsWith('.instagram.com') && {
  1220.         e: [
  1221.           'a[href*="/p/"]',
  1222.           'article [role="button"][tabindex="0"], article [role="button"][tabindex="0"] div',
  1223.         ],
  1224.         s: (m, node, rule) => {
  1225.           let data, a, n, img, src;
  1226.           if (location.pathname.startsWith('/p/')) {
  1227.             img = $('img[srcset], video', node.parentNode);
  1228.             if (img && (img.localName === 'video' || parseFloat(img.sizes) > 900))
  1229.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1230.           }
  1231.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1232.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1233.             data = a && tryCatch(this._getEdge, a.pathname.split('/')[2]);
  1234.           }
  1235.           rule.q = data && data.is_video && !data.video_url && 'meta[property="og:video"]';
  1236.           rule.g = a && $('[class*="Carousel"]', a) && rule._g;
  1237.           rule.follow = !data && !rule.g;
  1238.           rule._data = data;
  1239.           rule._img = img;
  1240.           return (
  1241.             !a && !src ? false :
  1242.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1243.                 data.video_url || data.display_url);
  1244.         },
  1245.         c: (html, doc, node, rule) =>
  1246.           tryCatch(rule._getCaption, rule._data) || (rule._img || 0).alt || '',
  1247.         follow: true,
  1248.         _g(text, doc, url, m, rule) {
  1249.           const media = JSON.parse(text).graphql.shortcode_media;
  1250.           const items = media.edge_sidecar_to_children.edges.map(e => ({
  1251.             url: e.node.video_url || e.node.display_url,
  1252.           }));
  1253.           items.title = tryCatch(rule._getCaption, media) || '';
  1254.           return items;
  1255.         },
  1256.         _getCaption: data => data && data.edge_media_to_caption.edges[0].node.text,
  1257.         _getEdge: shortcode => unsafeWindow._sharedData.entry_data.ProfilePage[0].graphql.user
  1258.             .edge_owner_to_timeline_media.edges.find(e => e.node.shortcode === shortcode).node,
  1259.       },
  1260.       ...dotDomain.endsWith('.reddit.com') && [{
  1261.         u: '||i.reddituploads.com/',
  1262.       }, {
  1263.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1264.         s: (m, node) => $propUp(node, 'data-url'),
  1265.       }, {
  1266.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1267.         s: 'https://i$1',
  1268.       }] || [],
  1269.       dotDomain.endsWith('.tumblr.com') && {
  1270.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1271.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1272.         follow: true,
  1273.       },
  1274.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1275.         e: 'a.media-item, a.js-media-image-link',
  1276.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1277.         follow: true,
  1278.       },
  1279.       dotDomain.endsWith('.twitter.com') && {
  1280.         e: '.grid-tweet > .media-overlay',
  1281.         s: (m, node) => node.previousElementSibling.src,
  1282.         follow: true,
  1283.       },
  1284.     ];
  1285.  
  1286.     const main = [
  1287.       {
  1288.         r: /[/?=](https?[^&]+)/,
  1289.         s: '$1',
  1290.         follow: true,
  1291.         onerror: 'skip',
  1292.       },
  1293.       {
  1294.         u: [
  1295.           '||500px.com/photo/',
  1296.           '||cl.ly/',
  1297.           '||cweb-pix.com/',
  1298.           '||ibb.co/',
  1299.           '||imgcredit.xyz/image/',
  1300.         ],
  1301.         r: /\.\w+\/.+/,
  1302.         q: 'meta[property="og:image"]',
  1303.       },
  1304.       {
  1305.         u: 'attachment.php',
  1306.         r: /attachment\.php.+attachmentid/,
  1307.       },
  1308.       {
  1309.         u: '||abload.de/image',
  1310.         q: '#image',
  1311.       },
  1312.       {
  1313.         u: '||deviantart.com/art/',
  1314.         s: (m, node) =>
  1315.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1316.             '' :
  1317.             m.input,
  1318.         q: [
  1319.           '#download-button[href*=".jpg"]',
  1320.           '#download-button[href*=".jpeg"]',
  1321.           '#download-button[href*=".gif"]',
  1322.           '#download-button[href*=".png"]',
  1323.           '#gmi-ResViewSizer_fullimg',
  1324.           'img.dev-content-full',
  1325.         ],
  1326.       },
  1327.       {
  1328.         u: '||dropbox.com/s',
  1329.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1330.         q: (text, doc) =>
  1331.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1332.       },
  1333.       {
  1334.         r: /[./]ebay\.[^/]+\/itm\//,
  1335.         q: text =>
  1336.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1337.             .replace(/~~60_\d+/, '~~60_57'),
  1338.       },
  1339.       {
  1340.         u: '||i.ebayimg.com/',
  1341.         s: (m, node) =>
  1342.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1343.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1344.       },
  1345.       {
  1346.         u: [
  1347.           '||fastpic.ru/big',
  1348.           '||fastpic.ru/thumb',
  1349.         ],
  1350.         r: /\/\/(?:i(\d+)\.)?([^/]+\/)(big|thumb|view)\/([^.]+?)\.(\w+)/,
  1351.         s: (m, node, rule) => {
  1352.           const a = node.closest('[href*="fastpic.ru"]');
  1353.           const am = a && rule.r.exec(decodeURIComponent(a.href)) || [];
  1354.           const p = a && am[4].split('/');
  1355.           return `https://i${am[1] || m[1] || am[3] === 'view' && p[0]}.${m[2]}big/${
  1356.             am[3] === 'big' ? am[4] : m[4]}.${am[5] || m[5]}?noht=1`;
  1357.         },
  1358.         xhr: () => 'https://fastpic.ru',
  1359.       },
  1360.       {
  1361.         u: '||fastpic.ru/view/',
  1362.         q: 'img[src*="/big/"]',
  1363.         xhr: true,
  1364.       },
  1365.       {
  1366.         u: '||facebook.com/',
  1367.         r: /photo\.php|[^/]+\/photos\//,
  1368.         s: (m, node) =>
  1369.           node.id === 'fbPhotoImage' ? false :
  1370.             /gradient\.png$/.test(m.input) ? '' :
  1371.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1372.         q: [
  1373.           'div + span > a:first-child:not([href*="tag_faces"])',
  1374.           'div + span > a[href*="tag_faces"] ~ a',
  1375.         ],
  1376.         rect: '#fbProfileCover',
  1377.       },
  1378.       {
  1379.         u: '||fbcdn.',
  1380.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1381.         s: m =>
  1382.           dotDomain.endsWith('.facebook.com') &&
  1383.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1384.           false,
  1385.         manual: true,
  1386.       },
  1387.       {
  1388.         u: ['||fbcdn-', 'fbcdn.net/'],
  1389.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1390.         s: (m, node) => {
  1391.           if (node.id === 'fbPhotoImage') {
  1392.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1393.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1394.           }
  1395.           if (m[4])
  1396.             return false;
  1397.           const pn = node.parentNode;
  1398.           if (pn.outerHTML.includes('/hovercard/'))
  1399.             return '';
  1400.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1401.             return false;
  1402.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1403.         },
  1404.         rect: '.photoWrap',
  1405.       },
  1406.       {
  1407.         u: '||flickr.com/photos/',
  1408.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1409.         s: m =>
  1410.           m.input.indexOf('/sizes/') < 0 ?
  1411.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1412.             false,
  1413.         q: (text, doc) => {
  1414.           const links = $$('.sizes-list a', doc);
  1415.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1416.         },
  1417.         follow: true,
  1418.       },
  1419.       {
  1420.         u: '||flickr.com/photos/',
  1421.         r: /\/sizes\//,
  1422.         q: '#allsizes-photo > img',
  1423.       },
  1424.       {
  1425.         u: '||gfycat.com/',
  1426.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1427.         s: 'https://$1$3',
  1428.         q: [
  1429.           'meta[content$=".webm"]',
  1430.           '#webmsource',
  1431.           'source[src$=".webm"]',
  1432.         ],
  1433.       },
  1434.       {
  1435.         u: [
  1436.           '||googleusercontent.com/proxy',
  1437.           '||googleusercontent.com/gadgets/proxy',
  1438.         ],
  1439.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1440.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1441.       },
  1442.       {
  1443.         u: [
  1444.           '||googleusercontent.com/',
  1445.           '||ggpht.com/',
  1446.         ],
  1447.         s: (m, node) =>
  1448.           m.input.includes('webcache.') ||
  1449.           node.outerHTML.match(/favicons\?|\b(Ol Rf Ep|Ol Zb ag|Zb HPb|Zb Gtb|Rf Pg|ho PQc|Uk wi hE|go wi Wh|we D0b|Bea)\b/) ||
  1450.           node.matches('.g-hovercard *, a[href*="profile_redirector"] > img') ?
  1451.             '' :
  1452.             m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1453.               .replace(/=[-\w]+([&#].*|$)/, ''),
  1454.       },
  1455.       {
  1456.         u: '||gravatar.com/',
  1457.         r: /([a-z0-9]{32})/,
  1458.         s: 'https://gravatar.com/avatar/$1?s=200',
  1459.       },
  1460.       {
  1461.         u: '//gyazo.com/',
  1462.         r: /\.com\/\w{32,}/,
  1463.         q: 'meta[name="twitter:image"]',
  1464.         xhr: true,
  1465.       },
  1466.       {
  1467.         u: '||hostingkartinok.com/show-image.php',
  1468.         q: '.image img',
  1469.       },
  1470.       {
  1471.         u: [
  1472.           '||imagecurl.com/images/',
  1473.           '||imagecurl.com/viewer.php',
  1474.         ],
  1475.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1476.         s: 'https://imagecurl.com/images/$1$2$3',
  1477.       },
  1478.       {
  1479.         u: '||imagebam.com/image/',
  1480.         q: 'meta[property="og:image"]',
  1481.         tabfix: true,
  1482.         xhr: hostname.includes('planetsuzy'),
  1483.       },
  1484.       {
  1485.         u: '||imageban.ru/thumbs',
  1486.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1487.         s: '$1out$2/$3/$4',
  1488.       },
  1489.       {
  1490.         u: [
  1491.           '||imageban.ru/show',
  1492.           '||imageban.net/show',
  1493.           '||ibn.im/',
  1494.         ],
  1495.         q: '#img_main',
  1496.       },
  1497.       {
  1498.         u: '||imageshack.us/img',
  1499.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1500.         s: 'https://$2/download/$1/$3$4',
  1501.       },
  1502.       {
  1503.         u: '||imageshack.us/i/',
  1504.         q: '#share-dl',
  1505.       },
  1506.       {
  1507.         u: '||imageteam.org/img',
  1508.         q: 'img[alt="image"]',
  1509.       },
  1510.       {
  1511.         u: [
  1512.           '||imagetwist.com/',
  1513.           '||imageshimage.com/',
  1514.         ],
  1515.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1516.         q: 'img.pic',
  1517.         xhr: true,
  1518.       },
  1519.       {
  1520.         u: '||imageupper.com/i/',
  1521.         q: '#img',
  1522.         xhr: true,
  1523.       },
  1524.       {
  1525.         u: '||imagevenue.com/img.php',
  1526.         q: '#thepic',
  1527.       },
  1528.       {
  1529.         u: '||imagezilla.net/show/',
  1530.         q: '#photo',
  1531.         xhr: true,
  1532.       },
  1533.       {
  1534.         u: [
  1535.           '||images-na.ssl-images-amazon.com/images/',
  1536.           '||media-imdb.com/images/',
  1537.         ],
  1538.         r: /images\/.+?\.jpg/,
  1539.         s: '/V1\\.?_.+?\\.//g',
  1540.       },
  1541.       {
  1542.         u: '||imgbox.com/',
  1543.         r: /\.com\/([a-z0-9]+)$/i,
  1544.         q: '#img',
  1545.         xhr: hostname !== 'imgbox.com',
  1546.       },
  1547.       {
  1548.         u: '||imgclick.net/',
  1549.         r: /\.net\/(\w+)/,
  1550.         q: 'img.pic',
  1551.         xhr: true,
  1552.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1553.       },
  1554.       {
  1555.         u: [
  1556.           '||imgflip.com/i/',
  1557.           '||imgflip.com/gif/',
  1558.         ],
  1559.         r: /\/(i|gif)\/([^/?#]+)/,
  1560.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1561.       },
  1562.       {
  1563.         u: [
  1564.           '||imgur.com/a/',
  1565.           '||imgur.com/gallery/',
  1566.           '||imgur.com/t/',
  1567.         ],
  1568.         g: async (text, doc, url, m, rule, node, cb) => {
  1569.           // simplified extraction of JSON as it occupies only one line
  1570.           if (!/(?:mergeConfig\('gallery',\s*|Imgur\.Album\.getInstance\()[\s\S]*?[,\s{"'](?:image|album)\s*:\s*({[^\r\n]+?}),?[\r\n]/.test(text))
  1571.             return;
  1572.           const info = JSON.parse(RegExp.$1);
  1573.           let images = info.is_album ? info.album_images.images : [info];
  1574.           if (info.num_images > images.length) {
  1575.             const u = `https://imgur.com/ajaxalbums/getimages/${info.hash}/hit.json?all=true`;
  1576.             images = JSON.parse((await Remoting.gmXhr(u)).responseText).data.images;
  1577.           }
  1578.           const items = [];
  1579.           for (const img of images || []) {
  1580.             const u = `https://i.imgur.com/${img.hash}`;
  1581.             items.push({
  1582.               url: img.ext === '.gif' && img.animated !== false ?
  1583.                 [`${u}.webm`, `${u}.mp4`, u] :
  1584.                 u + img.ext,
  1585.               desc: [img.title, img.description].filter(Boolean).join(' - '),
  1586.             });
  1587.           }
  1588.           if (images && info.is_album && !`${items[0].desc || ''}`.includes(info.title))
  1589.             items.title = info.title;
  1590.           cb(items);
  1591.         },
  1592.         css: '.post > .hover { display:none!important; }',
  1593.       },
  1594.       {
  1595.         u: '||imgur.com/',
  1596.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1597.         s: 'gallery',
  1598.         g: (text, doc, url, m) =>
  1599.           m[2].split(',').map(id => ({
  1600.             url: `https://i.${m[1]}${id}.jpg`,
  1601.           })),
  1602.       },
  1603.       {
  1604.         u: '||imgur.com/',
  1605.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.([a-z]+))/i,
  1606.         s: (m, node) => {
  1607.           if (/memegen|random|register|search|signin/.test(m.input))
  1608.             return '';
  1609.           const a = node.closest('a');
  1610.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1611.             return false;
  1612.           const id = m[3].replace(/(.{7})[bhm]$/, '$1');
  1613.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1614.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1615.           return ext === 'webm' ?
  1616.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1617.             u + ext;
  1618.         },
  1619.       },
  1620.       {
  1621.         u: [
  1622.           '||instagr.am/p/',
  1623.           '||instagram.com/p/',
  1624.         ],
  1625.         s: m => m.input.substr(0, m.input.lastIndexOf('/')) + '/?__a=1',
  1626.         q: text => {
  1627.           const m = JSON.parse(text).graphql.shortcode_media;
  1628.           return m.video_url || m.display_url;
  1629.         },
  1630.         rect: 'div.PhotoGridMediaItem',
  1631.         c: text => {
  1632.           const m = JSON.parse(text).graphql.shortcode_media.edge_media_to_caption.edges[0];
  1633.           return m === undefined ? '(no caption)' : m.node.text;
  1634.         },
  1635.       },
  1636.       {
  1637.         u: [
  1638.           '||livememe.com/',
  1639.           '||lvme.me/',
  1640.         ],
  1641.         r: /\.\w+\/([^.]+)$/,
  1642.         s: 'http://i.lvme.me/$1.jpg',
  1643.       },
  1644.       {
  1645.         u: '||lostpic.net/image',
  1646.         q: '.image-viewer-image img',
  1647.       },
  1648.       {
  1649.         u: '||makeameme.org/meme/',
  1650.         r: /\/meme\/([^/?#]+)/,
  1651.         s: 'https://media.makeameme.org/created/$1.jpg',
  1652.       },
  1653.       {
  1654.         u: '||photobucket.com/',
  1655.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1656.         s: 'https://i$1$3',
  1657.         xhr: !dotDomain.endsWith('.photobucket.com'),
  1658.       },
  1659.       {
  1660.         u: '||piccy.info/view3/',
  1661.         r: /(.+?\/view3)\/(.*)\//,
  1662.         s: '$1/$2/orig/',
  1663.         q: '#mainim',
  1664.       },
  1665.       {
  1666.         u: '||pimpandhost.com/image/',
  1667.         r: /(.+?\/image\/[0-9]+)/,
  1668.         s: '$1?size=original',
  1669.         q: 'img.original',
  1670.       },
  1671.       {
  1672.         u: [
  1673.           '||pixroute.com/',
  1674.           '||imgspice.com/',
  1675.         ],
  1676.         r: /\.html$/,
  1677.         q: 'img[id]',
  1678.         xhr: true,
  1679.       },
  1680.       {
  1681.         u: '||postima',
  1682.         r: /postima?ge?\.org\/image\/\w+/,
  1683.         q: [
  1684.           'a[href*="dl="]',
  1685.           '#main-image',
  1686.         ],
  1687.       },
  1688.       {
  1689.         u: [
  1690.           '||prntscr.com/',
  1691.           '||prnt.sc/',
  1692.         ],
  1693.         r: /\.\w+\/.+/,
  1694.         q: 'meta[property="og:image"]',
  1695.         xhr: true,
  1696.       },
  1697.       {
  1698.         u: '||radikal.ru/',
  1699.         r: /\.ru\/(fp|.+\.html)/,
  1700.         q: text => text.match(/http:\/\/[a-z0-9]+\.radikal\.ru[a-z0-9/]+\.(jpg|gif|png)/i)[0],
  1701.       },
  1702.       {
  1703.         u: '||tumblr.com',
  1704.         r: /_500\.jpg/,
  1705.         s: ['/_500/_1280/', ''],
  1706.       },
  1707.       {
  1708.         u: '||twimg.com/',
  1709.         r: /\/profile_images/i,
  1710.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  1711.       },
  1712.       {
  1713.         u: '||twimg.com/media/',
  1714.         r: /.+?format=(jpe?g|png|gif)/i,
  1715.         s: '$0&name=large',
  1716.       },
  1717.       {
  1718.         u: '||twimg.com/1/proxy',
  1719.         r: /t=([^&_]+)/i,
  1720.         s: m => atob(m[1]).match(/http.+/),
  1721.       },
  1722.       {
  1723.         u: '||pic.twitter.com/',
  1724.         r: /\.com\/[a-z0-9]+/i,
  1725.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  1726.         follow: true,
  1727.       },
  1728.       {
  1729.         u: '||twitpic.com/',
  1730.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  1731.         s: 'https://twitpic.com/show/large/$2',
  1732.       },
  1733.       {
  1734.         u: '||upix.me/files',
  1735.         s: '/#//',
  1736.       },
  1737.       {
  1738.         u: '||wiki',
  1739.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  1740.         s: '/\\/thumb(?=\\/)|' +
  1741.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  1742.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  1743.         xhr: !hostname.includes('wiki'),
  1744.       },
  1745.       {
  1746.         u: '||ytimg.com/vi/',
  1747.         r: /(.+?\/vi\/[^/]+)/,
  1748.         s: '$1/0.jpg',
  1749.         rect: '.video-list-item',
  1750.       },
  1751.       {
  1752.         u: '/viewer.php?file=',
  1753.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  1754.         s: '$1/images/$2',
  1755.         xhr: true,
  1756.       },
  1757.       {
  1758.         u: '/thumb_',
  1759.         r: /\/albums.+\/thumb_[^/]/,
  1760.         s: '/thumb_//',
  1761.       },
  1762.       {
  1763.         u: [
  1764.           '.th.jp',
  1765.           '.th.gif',
  1766.           '.th.png',
  1767.         ],
  1768.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  1769.         s: '$1$2',
  1770.         follow: true,
  1771.       },
  1772.       {
  1773.         r: /^[^?]+?\.(bmp|jpe?g?|gif|mp4|png|svg|web[mp])($|\?)/i,
  1774.       },
  1775.     ];
  1776.  
  1777.     /** @type mpiv.HostRule[] */
  1778.     Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean);
  1779.   },
  1780.  
  1781.   format(rule, {expand} = {}) {
  1782.     const s = JSON.stringify(rule, null, ' ');
  1783.     return expand ?
  1784.       /* {"a": ...,
  1785.           "b": ...,
  1786.           "c": ...
  1787.          } */
  1788.       s.replace(/^{\s+/g, '{') :
  1789.       /* {"a": ..., "b": ..., "c": ...} */
  1790.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  1791.   },
  1792.  
  1793.   /** @returns mpiv.HostRule | Error | false | undefined */
  1794.   parse(rule) {
  1795.     const isBatchOp = this instanceof Map;
  1796.     try {
  1797.       if (typeof rule === 'string')
  1798.         rule = JSON.parse(rule);
  1799.       if ('d' in rule && typeof rule.d !== 'string')
  1800.         rule.d = undefined;
  1801.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  1802.         return false;
  1803.       const compileTo = isBatchOp ? rule : {};
  1804.       if (rule.r)
  1805.         compileTo.r = new RegExp(rule.r, 'i');
  1806.       if (RX_HAS_CODE.test(rule.s))
  1807.         compileTo.s = Util.newFunction('m', 'node', 'rule', rule.s);
  1808.       if (RX_HAS_CODE.test(rule.q))
  1809.         compileTo.q = Util.newFunction('text', 'doc', 'node', 'rule', rule.q);
  1810.       if (RX_HAS_CODE.test(rule.c))
  1811.         compileTo.c = Util.newFunction('text', 'doc', 'node', 'rule', rule.c);
  1812.       return rule;
  1813.     } catch (e) {
  1814.       if (!e.message.includes('unsafe-eval'))
  1815.         if (isBatchOp) {
  1816.           this.set(rule, e);
  1817.         } else {
  1818.           return e;
  1819.         }
  1820.     }
  1821.   },
  1822.  
  1823.   runC(text, doc = document) {
  1824.     const fn = Ruler.runCHandler[typeof ai.rule.c] || Ruler.runCHandler.default;
  1825.     ai.caption = fn(text, doc);
  1826.   },
  1827.  
  1828.   runCHandler: {
  1829.     function: (text, doc) => {
  1830.       // not specifying as a parameter's default value to get the html only when needed
  1831.       if (!text) text = doc.documentElement.outerHTML;
  1832.       return ai.rule.c(text, doc, ai.node, ai.rule);
  1833.     },
  1834.     string: (text, doc) => {
  1835.       const el = $many(ai.rule.c, doc);
  1836.       return !el ? '' :
  1837.         el.getAttribute('content') ||
  1838.         el.getAttribute('title') ||
  1839.         el.textContent;
  1840.     },
  1841.     default: () =>
  1842.       (ai.tooltip || 0).text ||
  1843.       ai.node.alt ||
  1844.       $propUp(ai.node, 'title') ||
  1845.       Remoting.getFileName(
  1846.         ai.node.tagName === ai.popup.tagName
  1847.           ? ai.url
  1848.           : ai.node.src || $propUp(ai.node, 'href')),
  1849.   },
  1850.  
  1851.   runQ(text, doc, docUrl) {
  1852.     let url;
  1853.     if (typeof ai.rule.q === 'function') {
  1854.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  1855.       if (Array.isArray(url)) {
  1856.         ai.urls = url.slice(1);
  1857.         url = url[0];
  1858.       }
  1859.     } else {
  1860.       const el = $many(ai.rule.q, doc);
  1861.       url = Remoting.findImageUrl(el, docUrl);
  1862.     }
  1863.     return url;
  1864.   },
  1865.  
  1866.   runS(node, rule, m) {
  1867.     let urls = [];
  1868.     for (const s of ensureArray(rule.s))
  1869.       urls.push(
  1870.         typeof s === 'string' ? Util.decodeUrl(Ruler.substituteSingle(s, m)) :
  1871.           typeof s === 'function' ? s(m, node, rule) :
  1872.             s);
  1873.     if (rule.q && urls.length > 1) {
  1874.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  1875.       return {skipRule: true};
  1876.     }
  1877.     if (Array.isArray(urls[0]))
  1878.       urls = urls[0];
  1879.     // `false` returned by "s" property means "skip this rule"
  1880.     // any other falsy value (like say "") means "stop all rules"
  1881.     return urls[0] === false ? {skipRule: true} : urls.map(Util.decodeUrl);
  1882.   },
  1883.  
  1884.   substituteSingle(s, m) {
  1885.     if (!m) return s;
  1886.     if (s.startsWith('/') && !s.startsWith('//')) {
  1887.       const mid = s.search(/[^\\]\//) + 1;
  1888.       const end = s.lastIndexOf('/');
  1889.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  1890.       return m.input.replace(re, s.slice(mid + 1, end));
  1891.     }
  1892.     if (m.length && s.includes('$')) {
  1893.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  1894.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  1895.         for (let i = maxLength; i >= 0; i--) {
  1896.           const part = num.slice(0, i) | 0;
  1897.           if (part < m.length)
  1898.             return (m[part] || '') + num.slice(i);
  1899.         }
  1900.         return text;
  1901.       });
  1902.     }
  1903.     return s;
  1904.   },
  1905. };
  1906.  
  1907. const RuleMatcher = {
  1908.  
  1909.   /** @returns ?mpiv.RuleMatchInfo */
  1910.   findForLink(a) {
  1911.     let url =
  1912.       a.getAttribute('data-expanded-url') ||
  1913.       a.getAttribute('data-full-url') ||
  1914.       a.getAttribute('data-url') ||
  1915.       a.href;
  1916.     if (url.startsWith('data:'))
  1917.       url = false;
  1918.     else if (url.includes('//t.co/'))
  1919.       url = 'http://' + a.textContent;
  1920.     return RuleMatcher.find(url, a);
  1921.   },
  1922.  
  1923.   /** @returns ?mpiv.RuleMatchInfo */
  1924.   find(url, node, {noHtml, skipRules} = {}) {
  1925.     const tn = node.tagName;
  1926.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  1927.     const isPicOrLink = isPic || tn === 'A';
  1928.     let m, html, urls;
  1929.     for (const rule of Ruler.rules) {
  1930.       const {e} = rule;
  1931.       if (e && !node.matches(e) || skipRules && skipRules.includes(rule))
  1932.         continue;
  1933.       const {r, u} = rule;
  1934.       if (r && !noHtml && rule.html && (isPicOrLink || e))
  1935.         m = r.exec(html || (html = node.outerHTML));
  1936.       else if (r || u)
  1937.         m = url && RuleMatcher.makeUrlMatch(url, node, rule, r, u);
  1938.       else
  1939.         m = url ? RuleMatcher.makeDummyMatch(url) : [];
  1940.       if (!m)
  1941.         continue;
  1942.       const {s} = rule;
  1943.       let hasS = s !== undefined;
  1944.       // a rule with follow:true for the currently hovered IMG produced a URL,
  1945.       // but we'll only allow it to match rules without 's' in the nested find call
  1946.       if (isPic && !hasS && !skipRules)
  1947.         continue;
  1948.       if (s === '')
  1949.         return {};
  1950.       hasS &= s !== 'gallery';
  1951.       urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  1952.       if (!urls.skipRule) {
  1953.         const url = urls[0];
  1954.         return !url ? {} :
  1955.           hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule) &&
  1956.             RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]}) ||
  1957.             RuleMatcher.makeInfo(urls, node, rule, m);
  1958.       }
  1959.     }
  1960.   },
  1961.  
  1962.   makeUrlMatch(url, node, rule, r, u) {
  1963.     let m;
  1964.     if (u) {
  1965.       u = rule._u || (rule._u = UrlMatcher(u));
  1966.       m = u.fn.call(u.this, url) && (r || RuleMatcher.makeDummyMatch(url));
  1967.     }
  1968.     return (m || !u) && r ? r.exec(url) : m;
  1969.   },
  1970.  
  1971.   makeDummyMatch(url) {
  1972.     const m = [url];
  1973.     m.index = 0;
  1974.     m.input = url;
  1975.     return m;
  1976.   },
  1977.  
  1978.   /** @returns mpiv.RuleMatchInfo */
  1979.   makeInfo(urls, node, rule, m) {
  1980.     const url = (`${urls[0]}`.startsWith('//') ? location.protocol : '') + urls[0];
  1981.     const xhr = cfg.xhr && rule.xhr;
  1982.     return {
  1983.       node,
  1984.       rule,
  1985.       url,
  1986.       urls: urls.length > 1 ? urls.slice(1) : null,
  1987.       match: m,
  1988.       gallery: rule.g && Gallery.makeParser(rule.g),
  1989.       post: typeof rule.post === 'function' ? rule.post(m) : rule.post,
  1990.       xhr: xhr != null ? xhr : isSecureContext && !url.startsWith(location.protocol),
  1991.     };
  1992.   },
  1993.  
  1994.   isFollowableUrl(url, rule) {
  1995.     const f = rule.follow;
  1996.     return typeof f === 'function' ? f(url) : f;
  1997.   },
  1998. };
  1999.  
  2000. const Remoting = {
  2001.  
  2002.   gmXhr(url, opts = {}) {
  2003.     if (ai.req)
  2004.       tryCatch.call(ai.req, ai.req.abort);
  2005.     return new Promise((resolve, reject) => {
  2006.       ai.req = GM_xmlhttpRequest({
  2007.         url,
  2008.         method: 'GET',
  2009.         anonymous: (ai.rule || {}).anonymous,
  2010.         timeout: 30e3,
  2011.         ...opts,
  2012.         onload: done,
  2013.         onerror: done,
  2014.         ontimeout() {
  2015.           ai.req = null;
  2016.           reject(`Timeout fetching ${url}`);
  2017.         },
  2018.       });
  2019.       function done(r) {
  2020.         ai.req = null;
  2021.         if (r.status < 400 && !r.error)
  2022.           resolve(r);
  2023.         else
  2024.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2025.       }
  2026.     });
  2027.   },
  2028.  
  2029.   async getDoc(url) {
  2030.     const r = await (!ai.post ?
  2031.       Remoting.gmXhr(url) :
  2032.       Remoting.gmXhr(url, {
  2033.         method: 'POST',
  2034.         data: ai.post,
  2035.         headers: {
  2036.           'Content-Type': 'application/x-www-form-urlencoded',
  2037.           'Referer': url,
  2038.         },
  2039.       }));
  2040.     r.doc = new DOMParser().parseFromString(r.responseText, 'text/html');
  2041.     return r;
  2042.   },
  2043.  
  2044.   async getImage(url, pageUrl) {
  2045.     ai.bufBar = false;
  2046.     ai.bufStart = now();
  2047.     const response = await Remoting.gmXhr(url, {
  2048.       responseType: 'blob',
  2049.       headers: {
  2050.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2051.         Referer: pageUrl || (typeof ai.xhr === 'function' ? ai.xhr() : url),
  2052.       },
  2053.       onprogress: Remoting.getImageProgress,
  2054.     });
  2055.     Bar.set(false);
  2056.     const type = Remoting.guessMimeType(response);
  2057.     let b = response.response;
  2058.     if (!b) throw 'Empty response';
  2059.     if (b.type !== type)
  2060.       b = b.slice(0, b.size, type);
  2061.     return ai.xhr === 'blob'
  2062.       ? URL.createObjectURL(b)
  2063.       : Remoting.blobToDataUrl(b);
  2064.   },
  2065.  
  2066.   getImageProgress(e) {
  2067.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2068.       ai.bufBar = true;
  2069.     if (ai.bufBar) {
  2070.       const pct = e.loaded / e.total * 100 | 0;
  2071.       const size = e.total / 1024 | 0;
  2072.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2073.     }
  2074.   },
  2075.  
  2076.   async findRedirect() {
  2077.     try {
  2078.       const {finalUrl} = await Remoting.gmXhr(ai.url, {
  2079.         method: 'HEAD',
  2080.         headers: {
  2081.           'Referer': location.href.split('#', 1)[0],
  2082.         },
  2083.       });
  2084.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2085.       if (!info || !info.url)
  2086.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2087.       Object.assign(ai, info);
  2088.       App.startSingle();
  2089.     } catch (e) {
  2090.       App.handleError(e);
  2091.     }
  2092.   },
  2093.  
  2094.   async saveFile() {
  2095.     const url = ai.popup.src || ai.popup.currentSrc;
  2096.     let name = Remoting.getFileName(ai.imageUrl || url);
  2097.     if (!name.includes('.'))
  2098.       name += '.jpg';
  2099.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2100.       $create('a', {href: url, download: name})
  2101.         .dispatchEvent(new MouseEvent('click'));
  2102.     } else {
  2103.       Status.set('+loading');
  2104.       const onload = () => Status.set('-loading');
  2105.       GM_download({
  2106.         url,
  2107.         name,
  2108.         headers: {Referer: url},
  2109.         onerror: e => {
  2110.           Bar.set(`Could not download ${name}: ${e.error || e.message || e}.`, 'error');
  2111.           onload();
  2112.         },
  2113.         onprogress: Remoting.getImageProgress,
  2114.         onload,
  2115.       });
  2116.     }
  2117.   },
  2118.  
  2119.   getFileName(url) {
  2120.     return decodeURIComponent(url).split('/').pop().replace(/[:#?].*/, '');
  2121.   },
  2122.  
  2123.   blobToDataUrl(blob) {
  2124.     return new Promise((resolve, reject) => {
  2125.       const fr = new FileReader();
  2126.       fr.onload = () => resolve(fr.result);
  2127.       fr.onerror = reject;
  2128.       fr.readAsDataURL(blob);
  2129.     });
  2130.   },
  2131.  
  2132.   guessMimeType({responseHeaders, finalUrl}) {
  2133.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2134.         !RegExp.$1.includes('text/plain'))
  2135.       return RegExp.$1;
  2136.     const ext = /\.([a-z0-9]+?)($|\?|#)/i.exec(finalUrl) ? RegExp.$1 : 'jpg';
  2137.     switch (ext.toLowerCase()) {
  2138.       case 'bmp': return 'image/bmp';
  2139.       case 'gif': return 'image/gif';
  2140.       case 'jpe': return 'image/jpeg';
  2141.       case 'jpeg': return 'image/jpeg';
  2142.       case 'jpg': return 'image/jpeg';
  2143.       case 'mp4': return 'video/mp4';
  2144.       case 'png': return 'image/png';
  2145.       case 'svg': return 'image/svg+xml';
  2146.       case 'tif': return 'image/tiff';
  2147.       case 'tiff': return 'image/tiff';
  2148.       case 'webm': return 'video/webm';
  2149.       default: return 'application/octet-stream';
  2150.     }
  2151.   },
  2152.  
  2153.   findImageUrl(n, url) {
  2154.     if (!n) return;
  2155.     let html;
  2156.     const path =
  2157.       n.getAttribute('src') ||
  2158.       n.getAttribute('data-m4v') ||
  2159.       n.getAttribute('href') ||
  2160.       n.getAttribute('content') ||
  2161.       (html = n.outerHTML).includes('http') &&
  2162.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2163.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2164.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2165.   },
  2166. };
  2167.  
  2168. const Status = {
  2169.  
  2170.   set(status) {
  2171.     if (!status && !cfg.globalStatus) {
  2172.       ai.node && ai.node.removeAttribute(STATUS_ATTR);
  2173.       return;
  2174.     }
  2175.     const prefix = cfg.globalStatus ? PREFIX : '';
  2176.     const action = status && /^[+-]/.test(status) && status[0];
  2177.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2178.     const el = cfg.globalStatus ? doc.documentElement :
  2179.       name === 'edge' ? ai.popup :
  2180.         ai.node;
  2181.     if (!el) return;
  2182.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2183.     const oldValue = (el.getAttribute(attr) || '').trim();
  2184.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2185.     switch (action) {
  2186.       case '-':
  2187.         cls.delete(name);
  2188.         break;
  2189.       case false:
  2190.         for (const c of cls)
  2191.           if (c.startsWith(prefix) && c !== name)
  2192.             cls.delete(c);
  2193.       // fallthrough to +
  2194.       case '+':
  2195.         if (name)
  2196.           cls.add(name);
  2197.         break;
  2198.     }
  2199.     const newValue = [...cls].join(' ');
  2200.     if (newValue !== oldValue)
  2201.       el.setAttribute(attr, newValue);
  2202.   },
  2203.  
  2204.   loading(force) {
  2205.     if (!force) {
  2206.       clearTimeout(ai.timerStatus);
  2207.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2208.     } else if (!ai.popupLoaded) {
  2209.       Status.set('+loading');
  2210.     }
  2211.   },
  2212. };
  2213.  
  2214. const UrlMatcher = (() => {
  2215.   // string-to-regexp escaped chars
  2216.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2217.   // rx for '^' symbol in simple url match
  2218.   const RX_SEP = /[^\w%._-]/y;
  2219.   const RXS_SEP = RX_SEP.source;
  2220.   return match => {
  2221.     const results = [];
  2222.     for (const s of ensureArray(match)) {
  2223.       const pinDomain = s.startsWith('||');
  2224.       const pinStart = !pinDomain && s.startsWith('|');
  2225.       const endSep = s.endsWith('^');
  2226.       let fn;
  2227.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2228.       if (needle.includes('^')) {
  2229.         const plain = needle.split('^').reduce(getLongest);
  2230.         const rx = new RegExp(
  2231.           (pinStart ? '^' : '') +
  2232.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2233.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2234.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2235.         needle = [plain, rx];
  2236.         fn = regexp;
  2237.       } else if (pinStart) {
  2238.         fn = endSep ? equals : starts;
  2239.       } else if (pinDomain) {
  2240.         const slashPos = needle.indexOf('/');
  2241.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2242.         needle = [needle, domain, slashPos > 0, endSep];
  2243.         fn = startsDomainPrescreen;
  2244.       } else if (endSep) {
  2245.         fn = ends;
  2246.       } else {
  2247.         fn = has;
  2248.       }
  2249.       results.push({fn, this: needle});
  2250.     }
  2251.     return results.length > 1 ?
  2252.       {fn: checkArray, this: results} :
  2253.       results[0];
  2254.   };
  2255.   function checkArray(s) {
  2256.     return this.some(checkArrayItem, s);
  2257.   }
  2258.   function checkArrayItem(item) {
  2259.     return item.fn.call(item.this, this);
  2260.   }
  2261.   function ends(s) {
  2262.     return s.endsWith(this) || (
  2263.       s.length > this.length &&
  2264.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2265.       endsWithSep(s));
  2266.   }
  2267.   function endsWithSep(s, pos = s.length - 1) {
  2268.     RX_SEP.lastIndex = pos;
  2269.     return RX_SEP.test(s);
  2270.   }
  2271.   function equals(s) {
  2272.     return s.startsWith(this) && (
  2273.       s.length === this.length ||
  2274.       s.length === this.length + 1 && endsWithSep(s));
  2275.   }
  2276.   function getLongest(max, part) {
  2277.     return part.length > max.length ? part : max;
  2278.   }
  2279.   function has(s) {
  2280.     return s.includes(this);
  2281.   }
  2282.   function regexp(s) {
  2283.     return s.includes(this[0]) && this[1].test(s);
  2284.   }
  2285.   function starts(s) {
  2286.     return s.startsWith(this);
  2287.   }
  2288.   function startsDomainPrescreen(url) {
  2289.     return url.includes(this[0]) && startsDomain.call(this, url);
  2290.   }
  2291.   function startsDomain(url) {
  2292.     let hostStart = url.indexOf('//');
  2293.     if (hostStart && url[hostStart - 1] !== ':')
  2294.       return;
  2295.     hostStart = hostStart < 0 ? 0 : hostStart + 2;
  2296.     const host = url.slice(hostStart, (url.indexOf('/', hostStart) + 1 || url.length + 1) - 1);
  2297.     const [needle, domain, pinDomainEnd, endSep] = this;
  2298.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2299.     for (; ; start++) {
  2300.       start = host.indexOf(domain, start);
  2301.       if (start < 0)
  2302.         return;
  2303.       if (!start || host[start - 1] === '.')
  2304.         break;
  2305.     }
  2306.     start += hostStart;
  2307.     if (url.lastIndexOf(needle, start) !== start)
  2308.       return;
  2309.     const end = start + needle.length;
  2310.     return !endSep || end === host.length || end === url.length || endsWithSep(url, end);
  2311.   }
  2312. })();
  2313.  
  2314. const Util = {
  2315.  
  2316.   addStyle(name, css) {
  2317.     const id = `${PREFIX}style:${name}`;
  2318.     const el = doc.getElementById(id) ||
  2319.                css && $create('style', {id});
  2320.     if (!el) return;
  2321.     if (el.textContent !== css)
  2322.       el.textContent = css;
  2323.     if (el.parentElement !== doc.head)
  2324.       doc.head.appendChild(el);
  2325.     return el;
  2326.   },
  2327.  
  2328.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2329.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2330.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2331.   },
  2332.  
  2333.   decodeHtmlEntities(s) {
  2334.     return s
  2335.       .replace(/&quot;/g, '"')
  2336.       .replace(/&apos;/g, '\'')
  2337.       .replace(/&lt;/g, '<')
  2338.       .replace(/&gt;/g, '>')
  2339.       .replace(/&amp;/g, '&');
  2340.   },
  2341.  
  2342.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2343.   decodeUrl(url) {
  2344.     if (!url) return url;
  2345.     const iPct = url.indexOf('%');
  2346.     const iColon = url.indexOf(':');
  2347.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2348.       decodeURIComponent(url) :
  2349.       url;
  2350.   },
  2351.  
  2352.   deepEqual(a, b) {
  2353.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2354.       return a === b;
  2355.     if (Array.isArray(a)) {
  2356.       return Array.isArray(b) &&
  2357.         a.length === b.length &&
  2358.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2359.     }
  2360.     const keys = Object.keys(a);
  2361.     return keys.length === Object.keys(b).length &&
  2362.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2363.   },
  2364.  
  2365.   forceLayout(node) {
  2366.     // eslint-disable-next-line no-unused-expressions
  2367.     node.clientHeight;
  2368.   },
  2369.  
  2370.   formatError(e, rule) {
  2371.     const message =
  2372.       e.message ||
  2373.       e.readyState && 'Request failed.' ||
  2374.       e.type === 'error' && `File can't be displayed.${
  2375.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2376.       }` ||
  2377.       e;
  2378.     const m = [
  2379.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold;color:yellow'],
  2380.       ['', 'font-weight:normal;color:unset'],
  2381.     ];
  2382.     m.push(...[
  2383.       ['Node: %o', ai.node],
  2384.       ['Rule: %o', rule],
  2385.       ai.url && ['URL: %s', ai.url],
  2386.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2387.     ].filter(Boolean));
  2388.     return {
  2389.       message,
  2390.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2391.       consoleArgs: m.map(([, v]) => v),
  2392.     };
  2393.   },
  2394.  
  2395.   isVideoUrl(url) {
  2396.     return url.startsWith('data:video') ||
  2397.            !url.startsWith('data:') && /\.(webm|mp4)($|\?)/.test(url);
  2398.   },
  2399.  
  2400.   newFunction(...args) {
  2401.     try {
  2402.       return App.NOP || new Function(...args);
  2403.     } catch (e) {
  2404.       if (!e.message.includes('unsafe-eval'))
  2405.         throw e;
  2406.       App.NOP = () => {};
  2407.       return App.NOP;
  2408.     }
  2409.   },
  2410.  
  2411.   rel2abs(rel, abs = location.href) {
  2412.     try {
  2413.       return rel.startsWith('data:') ? rel :
  2414.         rel.startsWith('blob:') ? '' : // blobs don't work because they're usually revoked
  2415.           new URL(rel, abs).href;
  2416.     } catch (e) {
  2417.       return rel;
  2418.     }
  2419.   },
  2420.  
  2421.   suppressTooltip() {
  2422.     for (const node of [
  2423.       ai.node.parentNode,
  2424.       ai.node,
  2425.       ai.node.firstElementChild,
  2426.     ]) {
  2427.       const t = (node || 0).title;
  2428.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2429.         ai.tooltip = {node, text: t};
  2430.         node.title = '';
  2431.         break;
  2432.       }
  2433.     }
  2434.   },
  2435.  
  2436.   tabFixUrl() {
  2437.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2438.            navigator.userAgent.includes('Gecko/') &&
  2439.            flattenHtml(`data:text/html;charset=utf8,
  2440.       <style>
  2441.         body {
  2442.           margin: 0;
  2443.           padding: 0;
  2444.           background: #222;
  2445.         }
  2446.         .fit {
  2447.           overflow: hidden
  2448.         }
  2449.         .fit > img {
  2450.           max-width: 100vw;
  2451.           max-height: 100vh;
  2452.         }
  2453.         body > img {
  2454.           margin: auto;
  2455.           position: absolute;
  2456.           left: 0;
  2457.           right: 0;
  2458.           top: 0;
  2459.           bottom: 0;
  2460.         }
  2461.       </style>
  2462.       <body class=fit>
  2463.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2464.       </body>
  2465.     `).replace(/#/g, '%23');
  2466.   },
  2467. };
  2468.  
  2469. function setup({rule} = {}) {
  2470.   if (window !== top) return;
  2471.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2472.   // FF is superslow with textareas, bugzil.la/190147
  2473.   let root = (elConfig || 0).shadowRoot;
  2474.   let {blankRuleElement} = setup;
  2475.   /** @type NodeList */
  2476.   const UI = new Proxy({}, {
  2477.     get(_, id) {
  2478.       return root.getElementById(id);
  2479.     },
  2480.   });
  2481.   if (!rule || !elConfig)
  2482.     init(new Config({save: true}));
  2483.   if (rule)
  2484.     installRule(rule);
  2485.  
  2486.   function closeSetup(event) {
  2487.     const isApply = this.id === 'apply';
  2488.     if (event && (this.id === 'ok' || isApply)) {
  2489.       cfg = collectConfig({save: true, clone: isApply});
  2490.       Ruler.init();
  2491.       if (isApply) {
  2492.         renderCustomScales(cfg);
  2493.         return;
  2494.       }
  2495.     }
  2496.     $remove(elConfig);
  2497.     elConfig = null;
  2498.   }
  2499.  
  2500.   function collectConfig({save, clone} = {}) {
  2501.     let data = {};
  2502.     for (const el of $$('input[id], select[id]', root))
  2503.       data[el.id] = el.type === 'checkbox' ? el.checked :
  2504.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  2505.           el.value || '';
  2506.     Object.assign(data, {
  2507.       css: UI.css.value.trim(),
  2508.       delay: UI.delay.valueAsNumber * 1000,
  2509.       hosts: collectRules(),
  2510.       scale: clamp(UI.scale.valueAsNumber / 100, 0, 1) + 1,
  2511.       scales: UI.scales.value
  2512.         .trim()
  2513.         .split(/[,;]*\s+/)
  2514.         .map(x => x.replace(',', '.'))
  2515.         .filter(x => !isNaN(parseFloat(x))),
  2516.     });
  2517.     if (clone)
  2518.       data = JSON.parse(JSON.stringify(data));
  2519.     return new Config({data, save});
  2520.   }
  2521.  
  2522.   function collectRules() {
  2523.     return [...UI.rules.children]
  2524.       .map(el => [el.value.trim(), el[RULE]])
  2525.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  2526.       .map(([s, json]) => json || s)
  2527.       .filter(Boolean);
  2528.   }
  2529.  
  2530.   function exportSettings(e) {
  2531.     dropEvent(e);
  2532.     const txt = $create('textarea', {
  2533.       style: 'opacity:0; position:absolute',
  2534.       value: JSON.stringify(collectConfig(), null, '  '),
  2535.     });
  2536.     root.appendChild(txt);
  2537.     txt.select();
  2538.     txt.focus();
  2539.     document.execCommand('copy');
  2540.     e.target.focus();
  2541.     txt.remove();
  2542.     UI.exportNotification.hidden = false;
  2543.     setTimeout(() => (UI.exportNotification.hidden = true), 1000);
  2544.   }
  2545.  
  2546.   function importSettings(e) {
  2547.     dropEvent(e);
  2548.     const s = prompt('Paste settings:');
  2549.     if (s)
  2550.       init(new Config({data: s}));
  2551.   }
  2552.  
  2553.   function checkRule({target: el}) {
  2554.     let json, error, title;
  2555.     const prev = el.previousElementSibling;
  2556.     if (el.value) {
  2557.       json = Ruler.parse(el.value);
  2558.       error = json instanceof Error && (json.message || String(json));
  2559.       const invalidDomain = !error && json && typeof json.d === 'string' &&
  2560.         !/^[-.a-z0-9]*$/i.test(json.d);
  2561.       title = [invalidDomain && 'Disabled due to invalid characters in "d"', error]
  2562.         .filter(Boolean).join('\n');
  2563.       el.classList.toggle('invalid-domain', invalidDomain);
  2564.       if (!prev)
  2565.         el.insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2566.     } else if (prev) {
  2567.       prev.focus();
  2568.       el.remove();
  2569.     }
  2570.     el[RULE] = !error && json;
  2571.     el.title = title;
  2572.     el.setCustomValidity(error || '');
  2573.   }
  2574.  
  2575.   function focusRule({type, target: el, relatedTarget: from}) {
  2576.     if (el === this)
  2577.       return;
  2578.     if (type === 'paste') {
  2579.       setTimeout(() => focusRule.call(this, {target: el}));
  2580.       return;
  2581.     }
  2582.     if (el[RULE])
  2583.       el.value = Ruler.format(el[RULE], {expand: true});
  2584.     const h = clamp(el.scrollHeight, 15, elConfig.clientHeight / 4);
  2585.     if (h > el.offsetHeight)
  2586.       el.style.minHeight = h + 'px';
  2587.     if (!this.contains(from))
  2588.       from = [...$$('[style*="height"]', this)].find(_ => _ !== el);
  2589.     if (from) {
  2590.       from.style.minHeight = '';
  2591.       if (from[RULE])
  2592.         from.value = Ruler.format(from[RULE]);
  2593.     }
  2594.   }
  2595.  
  2596.   function installRule(rule) {
  2597.     const inputs = UI.rules.children;
  2598.     let el = [...inputs].find(el => Util.deepEqual(el[RULE], rule));
  2599.     if (!el) {
  2600.       el = inputs[0];
  2601.       el[RULE] = rule;
  2602.       el.value = Ruler.format(rule);
  2603.       el.hidden = false;
  2604.       const i = Math.max(0, collectRules().indexOf(rule));
  2605.       inputs[i].insertAdjacentElement('afterend', el);
  2606.       inputs[0].insertAdjacentElement('beforebegin', blankRuleElement.cloneNode());
  2607.     }
  2608.     const rect = el.getBoundingClientRect();
  2609.     if (rect.bottom < 0 ||
  2610.         rect.bottom > el.parentNode.offsetHeight)
  2611.       el.scrollIntoView();
  2612.     el.classList.add('highlight');
  2613.     el.addEventListener('animationend', () => el.classList.remove('highlight'), {once: true});
  2614.     el.focus();
  2615.   }
  2616.  
  2617.   function init(config) {
  2618.     $remove(elConfig);
  2619.     elConfig = $create('div', {contentEditable: true});
  2620.     root = elConfig.attachShadow({mode: 'open'});
  2621.     root.innerHTML = createConfigHtml();
  2622.     initEvents();
  2623.     renderValues(config);
  2624.     renderCustomScales(config);
  2625.     initRules(config);
  2626.     doc.body.appendChild(elConfig);
  2627.     requestAnimationFrame(() => {
  2628.       UI.css.style.minHeight = clamp(UI.css.scrollHeight, 40, elConfig.clientHeight / 4) + 'px';
  2629.     });
  2630.   }
  2631.  
  2632.   function initEvents() {
  2633.     UI.apply.onclick = UI.cancel.onclick = UI.ok.onclick = UI.x.onclick = closeSetup;
  2634.     UI.export.onclick = exportSettings;
  2635.     UI.import.onclick = importSettings;
  2636.     UI.install.onclick = setupRuleInstaller;
  2637.     const {/** @type {HTMLTextAreaElement} */ cssApp} = UI;
  2638.     UI.reveal.onclick = e => {
  2639.       e.preventDefault();
  2640.       cssApp.hidden = !cssApp.hidden;
  2641.       if (!cssApp.hidden) {
  2642.         if (!cssApp.value) {
  2643.           App.updateStyles();
  2644.           cssApp.value = App.globalStyle.trim();
  2645.           cssApp.setSelectionRange(0, 0);
  2646.         }
  2647.         cssApp.focus();
  2648.       }
  2649.     };
  2650.     UI.start.onchange = function () {
  2651.       UI.delay.closest('label').hidden =
  2652.         UI.preload.closest('label').hidden =
  2653.           this.value !== 'auto';
  2654.     };
  2655.     UI.start.onchange();
  2656.     UI.xhr.onclick = ({target: el}) => el.checked || confirm($propUp(el, 'title'));
  2657.     // color
  2658.     for (const el of $$('[type="color"]', root)) {
  2659.       el.oninput = colorOnInput;
  2660.       el.elSwatch = el.nextElementSibling;
  2661.       el.elOpacity = UI[el.id.replace('Color', 'Opacity')];
  2662.       el.elOpacity.elColor = el;
  2663.     }
  2664.     function colorOnInput() {
  2665.       this.elSwatch.style.setProperty('--color',
  2666.         Util.color(this.value, this.elOpacity.valueAsNumber));
  2667.     }
  2668.     // range
  2669.     for (const el of $$('[type="range"]', root)) {
  2670.       el.oninput = rangeOnInput;
  2671.       el.onblur = rangeOnBlur;
  2672.       el.addEventListener('focusin', rangeOnFocus);
  2673.     }
  2674.     function rangeOnBlur(e) {
  2675.       if (this.elEdit && e.relatedTarget !== this.elEdit)
  2676.         this.elEdit.onblur(e);
  2677.     }
  2678.     function rangeOnFocus() {
  2679.       if (this.elEdit) return;
  2680.       const {min, max, step, value} = this;
  2681.       this.elEdit = $create('input', {
  2682.         value, min, max, step,
  2683.         className: 'range-edit',
  2684.         style: `left: ${this.offsetLeft}px; margin-top: ${this.offsetHeight + 1}px`,
  2685.         type: 'number',
  2686.         elRange: this,
  2687.         onblur: rangeEditOnBlur,
  2688.         oninput: rangeEditOnInput,
  2689.       });
  2690.       this.insertAdjacentElement('afterend', this.elEdit);
  2691.     }
  2692.     function rangeOnInput() {
  2693.       this.title = (this.dataset.title || '').replace('$', this.value);
  2694.       if (this.elColor) this.elColor.oninput();
  2695.       if (this.elEdit) this.elEdit.valueAsNumber = this.valueAsNumber;
  2696.     }
  2697.     // range-edit
  2698.     function rangeEditOnBlur(e) {
  2699.       if (e.relatedTarget !== this.elRange) {
  2700.         this.remove();
  2701.         this.elRange.elEdit = null;
  2702.       }
  2703.     }
  2704.     function rangeEditOnInput() {
  2705.       this.elRange.valueAsNumber = this.valueAsNumber;
  2706.       this.elRange.oninput();
  2707.     }
  2708.     // prevent the main page from interpreting key presses in inputs as hotkeys
  2709.     // which may happen since it sees only the outer <div> in the event |target|
  2710.     root.addEventListener('keydown', e => !e.altKey && !e.metaKey && e.stopPropagation(), true);
  2711.   }
  2712.  
  2713.   function initRules(config) {
  2714.     const rules = UI.rules;
  2715.     rules.addEventListener('input', checkRule);
  2716.     if (!isFF) rules.addEventListener('focusin', focusRule);
  2717.     if (!isFF) rules.addEventListener('paste', focusRule);
  2718.     blankRuleElement =
  2719.       setup.blankRuleElement =
  2720.         setup.blankRuleElement || rules.firstElementChild.cloneNode();
  2721.     for (const rule of config.hosts || []) {
  2722.       const el = blankRuleElement.cloneNode();
  2723.       el.value = typeof rule === 'string' ? rule : Ruler.format(rule);
  2724.       rules.appendChild(el);
  2725.       checkRule({target: el});
  2726.     }
  2727.     const search = UI.search;
  2728.     search.oninput = () => {
  2729.       setup.search = search.value;
  2730.       const s = search.value.toLowerCase();
  2731.       for (const el of rules.children)
  2732.         el.hidden = s && !el.value.toLowerCase().includes(s);
  2733.     };
  2734.     search.value = setup.search || '';
  2735.     if (search.value)
  2736.       search.oninput();
  2737.   }
  2738.  
  2739.   function renderCustomScales(config) {
  2740.     UI.scales.value = config.scales.join(' ').trim() || Config.DEFAULTS.scales.join(' ');
  2741.   }
  2742.  
  2743.   function renderValues(config) {
  2744.     for (const el of $$('input[id], select[id], textarea[id]', root))
  2745.       if (el.id in config)
  2746.         el[el.type === 'checkbox' ? 'checked' : 'value'] = config[el.id];
  2747.     for (const el of $$('input[type="range"]', root))
  2748.       el.oninput();
  2749.     for (const el of $$('a[href^="http"]', root))
  2750.       Object.assign(el, {target: '_blank', rel: 'noreferrer noopener external'});
  2751.     UI.delay.valueAsNumber = config.delay / 1000;
  2752.     UI.scale.valueAsNumber = Math.round(clamp(config.scale - 1, 0, 1) * 100);
  2753.   }
  2754. }
  2755.  
  2756. async function setupRuleInstaller(e) {
  2757.   dropEvent(e);
  2758.   const parent = this.parentElement;
  2759.   parent.children.installLoading.hidden = false;
  2760.   this.remove();
  2761.   let rules;
  2762.  
  2763.   try {
  2764.     rules = extractRules(await Remoting.getDoc(this.href));
  2765.     const selector = $create('select', {
  2766.       size: 8,
  2767.       style: 'width: 100%',
  2768.       ondblclick: e => e.target !== selector && maybeSetup(e),
  2769.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  2770.     });
  2771.     selector.append(...rules.map(renderRule));
  2772.     selector.selectedIndex = findMatchingRuleIndex();
  2773.     // remove "name" since the installed rules don't need it
  2774.     for (const r of rules)
  2775.       delete r.name;
  2776.     parent.children.installLoading.remove();
  2777.     parent.children.installHint.hidden = false;
  2778.     parent.appendChild(selector);
  2779.     requestAnimationFrame(() => {
  2780.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  2781.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  2782.     });
  2783.   } catch (e) {
  2784.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  2785.   }
  2786.  
  2787.   function extractRules({doc}) {
  2788.     const code = $('script', doc).textContent;
  2789.     // sort by name
  2790.     return JSON.parse(code.match(/var\s+rules\s*=\s*(\[.+]);?[\r\n]/)[1])
  2791.       .filter(r => !r.d || hostname.includes(r.d))
  2792.       .sort((a, b) =>
  2793.         (a = a.name.toLowerCase()) < (b = b.name.toLowerCase()) ? -1 :
  2794.           a > b ? 1 :
  2795.             0);
  2796.   }
  2797.  
  2798.   function findMatchingRuleIndex() {
  2799.     const dottedHost = `.${hostname}.`;
  2800.     const weighParts = (n, part) => n + (dottedHost.includes(`.${part}.`) && part.length);
  2801.     const weighName = name => name.toLowerCase().split(/[^a-z\d.-]+/i).reduce(weighParts, 0);
  2802.     return rules.reduce((max, {d, name}, index) => {
  2803.       const count = !!(d && hostname.includes(d)) * 10 + weighName(name);
  2804.       return count > max.count ? {count, index} : max;
  2805.     }, {count: 0, index: 0}).index;
  2806.   }
  2807.  
  2808.   function renderRule(r) {
  2809.     const {name, ...copy} = r;
  2810.     return $create('option', {
  2811.       textContent: name,
  2812.       title: Ruler.format(copy, {expand: true})
  2813.         .replace(/^{|\s*}$/g, '')
  2814.         .split('\n')
  2815.         .slice(0, 12)
  2816.         .map(renderTitleLine)
  2817.         .filter(Boolean)
  2818.         .join('\n'),
  2819.     });
  2820.   }
  2821.  
  2822.   function renderTitleLine(line, i, arr) {
  2823.     return (
  2824.       // show ... on 10th line if there are more lines
  2825.       i === 9 && arr.length > 10 ? '...' :
  2826.         i > 10 ? '' :
  2827.           // truncate to 100 chars
  2828.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  2829.             // strip the leading space
  2830.             .replace(/^\s/, ''));
  2831.   }
  2832.  
  2833.   function maybeSetup(e) {
  2834.     if (!modKeyPressed(e))
  2835.       setup({rule: rules[e.currentTarget.selectedIndex]});
  2836.   }
  2837. }
  2838.  
  2839. function createConfigHtml() {
  2840.   const MPIV_BASE_URL = 'https://w9p.co/userscripts/mpiv/';
  2841.   const scalesHint = 'Leave it empty and click Apply or Save to restore the default values.';
  2842.   const trimLeft = s => s.trim().replace(/\n\s+/g, '\r');
  2843.   return flattenHtml(`
  2844. <style>
  2845.   :host {
  2846.     all: initial !important;
  2847.     position: fixed !important;
  2848.     z-index: 2147483647 !important;
  2849.     top: 20px !important;
  2850.     right: 20px !important;
  2851.     padding: 1.5em !important;
  2852.     color: #000 !important;
  2853.     background: #eee !important;
  2854.     box-shadow: 5px 5px 25px 2px #000 !important;
  2855.     width: 32em !important;
  2856.     border: 1px solid black !important;
  2857.     display: flex !important;
  2858.     flex-direction: column !important;
  2859.   }
  2860.   main {
  2861.     font: 12px/15px sans-serif;
  2862.   }
  2863.   ul {
  2864.     max-height: calc(100vh - 200px);
  2865.     margin: 10px 0 15px 0;
  2866.     padding: 0;
  2867.     list-style: none;
  2868.   }
  2869.   li {
  2870.     margin: 0;
  2871.     padding: .25em 0;
  2872.   }
  2873.   li.options {
  2874.     display: flex;
  2875.     align-items: center;
  2876.     justify-content: space-between;
  2877.   }
  2878.   li.row {
  2879.     flex-wrap: wrap;
  2880.     justify-content: flex-start;
  2881.   }
  2882.   li.row label {
  2883.     flex-direction: row;
  2884.     align-items: center;
  2885.   }
  2886.   li.row input {
  2887.     margin-right: .25em;
  2888.   }
  2889.   li.stretch label {
  2890.     flex: 1;
  2891.     white-space: nowrap;
  2892.   }
  2893.   li.stretch label > span {
  2894.     display: flex;
  2895.     flex-direction: row;
  2896.     flex: 1;
  2897.   }
  2898.   label {
  2899.     display: inline-flex;
  2900.     flex-direction: column;
  2901.   }
  2902.   label:not(:last-child) {
  2903.     margin-right: 1em;
  2904.   }
  2905.   input, select {
  2906.     min-height: 1.6em;
  2907.     box-sizing: border-box;
  2908.   }
  2909.   input[type=checkbox] {
  2910.     margin-left: 0;
  2911.   }
  2912.   input[type=number] {
  2913.     width: 4em;
  2914.   }
  2915.   input:not([type=checkbox])  {
  2916.     padding: 0 .25em;
  2917.   }
  2918.   input[type=range] {
  2919.     flex: 1;
  2920.     width: 100%;
  2921.     margin: 0 .25em;
  2922.     padding: 0;
  2923.     filter: saturate(0);
  2924.     opacity: .5;
  2925.   }
  2926.   u + input[type=range] {
  2927.     max-width: 3em;
  2928.   }
  2929.   input[type=range]:hover {
  2930.     filter: none;
  2931.     opacity: 1;
  2932.   }
  2933.   input[type=color] {
  2934.     position: absolute;
  2935.     width: calc(1.5em + 2px);
  2936.     opacity: 0;
  2937.     cursor: pointer;
  2938.   }
  2939.   u {
  2940.     display: inline-block;
  2941.     position: relative;
  2942.     width: 1.5em;
  2943.     height: 1.5em;
  2944.     border: 1px solid #888;
  2945.     pointer-events: none;
  2946.     color: #888;
  2947.     background-image:
  2948.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  2949.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  2950.     background-size: .5em .5em;
  2951.     background-position: 0 0, .25em .25em;
  2952.   }
  2953.   u::after {
  2954.     position: absolute;
  2955.     top: 0;
  2956.     left: 0;
  2957.     right: 0;
  2958.     bottom: 0;
  2959.     content: "";
  2960.     background-color: var(--color);
  2961.   }
  2962.   .range-edit {
  2963.     position: absolute;
  2964.     box-shadow: 0 0.25em 1em #000;
  2965.     z-index: 99;
  2966.   }
  2967.   #rules input,
  2968.   textarea {
  2969.     flex: 1;
  2970.     resize: vertical;
  2971.     margin: 1px 0;
  2972.     font: 11px/1.25 Consolas, monospace;
  2973.   }
  2974.   :invalid {
  2975.     background-color: #f002;
  2976.     border-color: #800;
  2977.   }
  2978.   code {
  2979.     font-weight: bold;
  2980.   }
  2981.   a {
  2982.     text-decoration: none;
  2983.   }
  2984.   a:hover {
  2985.     text-decoration: underline;
  2986.   }
  2987.   button {
  2988.     padding: .2em 1em;
  2989.     margin: 0 1em;
  2990.   }
  2991.   .column {
  2992.     display: flex;
  2993.     flex-direction: column;
  2994.   }
  2995.   .highlight {
  2996.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  2997.     animation-fill-mode: both;
  2998.   }
  2999.   #rules > * {
  3000.     word-break: break-all;
  3001.   }
  3002.   .invalid-domain {
  3003.     opacity: .5;
  3004.   }
  3005.   #x {
  3006.     position: absolute;
  3007.     top: 0;
  3008.     right: 0;
  3009.     padding: 4px 8px;
  3010.     cursor: pointer;
  3011.     user-select: none;
  3012.   }
  3013.   #x:hover {
  3014.     background-color: #8884;
  3015.   }
  3016.   #cssApp {
  3017.     color: seagreen;
  3018.   }
  3019.   #exportNotification {
  3020.     color: green;
  3021.     font-weight: bold;
  3022.     position: absolute;
  3023.     left: 0;
  3024.     right: 0;
  3025.     bottom: 2px;
  3026.   }
  3027.   #installHint {
  3028.     color: green;
  3029.   }
  3030.   @keyframes fade-in {
  3031.     from { background-color: deepskyblue }
  3032.     to {}
  3033.   }
  3034.   @media (prefers-color-scheme: dark) {
  3035.     :host {
  3036.       color: #aaa !important;
  3037.       background: #333 !important;
  3038.     }
  3039.     a {
  3040.       color: deepskyblue;
  3041.     }
  3042.     button {
  3043.       background: linear-gradient(-5deg, #333, #555);
  3044.       border: 1px solid #000;
  3045.       box-shadow: 0 2px 6px #181818;
  3046.       border-radius: 3px;
  3047.       cursor: pointer;
  3048.     }
  3049.     button:hover {
  3050.       background: linear-gradient(-5deg, #333, #666);
  3051.     }
  3052.     textarea, input, select {
  3053.       background: #111;
  3054.       color: #BBB;
  3055.       border: 1px solid #555;
  3056.     }
  3057.     input[type=checkbox] {
  3058.       filter: invert(1);
  3059.     }
  3060.     input[type=range] {
  3061.       filter: invert(1) saturate(0);
  3062.     }
  3063.     input[type=range]:hover {
  3064.       filter: invert(1);
  3065.     }
  3066.     @supports (-moz-appearance: none) {
  3067.       input[type=checkbox],
  3068.       input[type=range],
  3069.       input[type=range]:hover {
  3070.         filter: none;
  3071.       }
  3072.     }
  3073.     .range-edit {
  3074.       box-shadow: 0 .5em 1em .5em #000;
  3075.     }
  3076.     #cssApp {
  3077.       color: darkseagreen;
  3078.     }
  3079.     #installHint {
  3080.       color: greenyellow;
  3081.     }
  3082.   }
  3083. </style>
  3084. <main>
  3085.   <a href="${MPIV_BASE_URL}">${GM_info.script.name}</a>
  3086.   <div id=x>x</div>
  3087.   <ul class=column>
  3088.     <li class=options>
  3089.       <label>Popup shows on
  3090.         <select id=start>
  3091.           <option value=auto>automatically
  3092.           <option value=context>Right click / Ctrl
  3093.           <option value=ctrl>Ctrl
  3094.         </select>
  3095.       </label>
  3096.       <label>after, sec<input id=delay type=number min=0.05 max=10 step=0.05 title=seconds></label>
  3097.       <label title="(if the full version of the hovered image is ...% larger)">
  3098.         if larger, %<input id=scale type=number min=0 max=100 step=1>
  3099.       </label>
  3100.       <label>Zoom activates on
  3101.         <select id=zoom>
  3102.           <option value=context>Right click / Shift
  3103.           <option value=wheel>Wheel up / Shift
  3104.           <option value=shift>Shift
  3105.           <option value=auto>automatically
  3106.         </select>
  3107.       </label>
  3108.       <label>...and zooms to
  3109.         <select id=fit>
  3110.           <option value=all>fit to window
  3111.           <option value=large>fit if larger
  3112.           <option value=no>100%
  3113.           <option value="" title="Use custom scale factors">custom
  3114.         </select>
  3115.       </label>
  3116.     </li>
  3117.     <li class=options>
  3118.       <label>Zoom step, %<input id=zoomStep type=number min=100 max=400 step=1>
  3119.       </label>
  3120.       <label>When fully zoomed out:
  3121.         <select id=zoomOut>
  3122.           <option value=stay>stay in zoom mode
  3123.           <option value=auto>stay if still hovered
  3124.           <option value=unzoom>undo zoom mode
  3125.           <option value=close>close popup
  3126.         </select>
  3127.       </label>
  3128.       <label style="flex: 1" title="${trimLeft(`
  3129.         Scale factors to use when “zooms to” selector is set to “custom”.
  3130.         0 = fit to window,
  3131.         0! = same as 0 but also removes smaller values,
  3132.         * after a value marks the default zoom factor, for example: 1*
  3133.         The popup won't shrink below the image's natural size or window size for bigger mages.
  3134.         ${scalesHint}
  3135.       `)}">Custom scale factors:
  3136.         <input id=scales placeholder="${scalesHint}">
  3137.       </label>
  3138.     </li>
  3139.     <li class="options row">
  3140.       <label><input type=checkbox id=center>Always centered</label>
  3141.       <label title="Disable only if you spoof the HTTP headers yourself">
  3142.         <input type=checkbox id=xhr>Anti-hotlinking workaround
  3143.       </label>
  3144.       <label><input type=checkbox id=preload>Start preloading immediately</label>
  3145.       <label><input type=checkbox id=imgtab>Run in image tabs</label>
  3146.       <label title="Don't enable unless you explicitly use it in your custom CSS">
  3147.         <input type=checkbox id=globalStatus>Expose status on &lt;html&gt; node (may cause slowdowns)
  3148.       </label>
  3149.     </li>
  3150.     <li class="options stretch">
  3151.       <label>Background
  3152.         <span>
  3153.           <input id=uiBackgroundColor type=color><u></u>
  3154.           <input id=uiBackgroundOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3155.         </span>
  3156.       </label>
  3157.       <label>Border color, opacity, size
  3158.         <span>
  3159.           <input id=uiBorderColor type=color><u></u>
  3160.           <input id=uiBorderOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3161.           <input id=uiBorder type=range min=0 max=20 step=1 data-title="Border size: $px">
  3162.         </span>
  3163.       </label>
  3164.       <label>Shadow color, opacity, size
  3165.         <span>
  3166.           <input id=uiShadowColor type=color><u></u>
  3167.           <input id=uiShadowOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3168.           <input id=uiShadow type=range min=0 max=100 step=1 data-title="
  3169.             ${'Shadow blur radius: $px\n"0" disables the shadow.'}">
  3170.         </span>
  3171.       </label>
  3172.       <label>Padding
  3173.         <span><input id=uiPadding type=range min=0 max=100 step=1 data-title="Padding: $px"></span>
  3174.       </label>
  3175.       <label>Margin
  3176.         <span><input id=uiMargin type=range min=0 max=100 step=1 data-title="Margin: $px"></span>
  3177.       </label>
  3178.     </li>
  3179.     <li>
  3180.       <a href="${MPIV_BASE_URL}css.html">Custom CSS:</a>&nbsp;
  3181.       e.g. <b>#mpiv-popup { animation: none !important }</b>
  3182.       <a href="#" id=reveal style="float: right"
  3183.          title="You can copy parts of it to override them in your custom CSS">
  3184.          View the built-in CSS</a>
  3185.       <div class=column>
  3186.         <textarea id=css spellcheck=false></textarea>
  3187.         <textarea id=cssApp spellcheck=false hidden readonly rows=30></textarea>
  3188.       </div>
  3189.     </li>
  3190.     <li style="display: flex; justify-content: space-between;">
  3191.       <div><a href="${MPIV_BASE_URL}host_rules.html">Custom host rules:</a></div>
  3192.       <div style="white-space: nowrap">
  3193.         To disable, put any symbol except <code>a..z 0..9 - .</code><br>
  3194.         in "d" value, for example <code>"d": "!foo.com"</code>
  3195.       </div>
  3196.       <div>
  3197.         <input id=search type=search placeholder=Search style="width: 10em; margin-left: 1em">
  3198.       </div>
  3199.     </li>
  3200.     <li style="margin-left: -3px; margin-right: -3px; overflow-y: auto; padding-left: 3px; padding-right: 3px;">
  3201.       <div id=rules class=column>${
  3202.   isFF && /win/i.test(navigator.platform)
  3203.     ? '<input spellcheck=false>' // textareas in FF+Windows are like 100x slower than inputs
  3204.     : '<textarea rows=1 spellcheck=false></textarea>'}
  3205.       </div>
  3206.     </li>
  3207.     <li>
  3208.       <div hidden id=installLoading>Loading...</div>
  3209.       <div hidden id=installHint>Double-click the rule (or select and press Enter) to add it.
  3210.         Click <code>Apply</code> or <code>Save</code> to confirm.</div>
  3211.       <a href="${MPIV_BASE_URL}more_host_rules.html" id=install>Install rule from repository...</a>
  3212.     </li>
  3213.   </ul>
  3214.   <div style="text-align:center">
  3215.     <button id=ok accesskey=s>Save</button>
  3216.     <button id=apply accesskey=a>Apply</button>
  3217.     <button id=import style="margin-right: 0">Import</button>
  3218.     <button id=export style="margin-left: 0">Export</button>
  3219.     <button id=cancel>Cancel</button>
  3220.     <div id=exportNotification hidden>Copied to clipboard.</div>
  3221.   </div>
  3222. </main>`);
  3223. }
  3224.  
  3225. function createGlobalStyle() {
  3226.   App.globalStyle = /*language=CSS*/ (String.raw`
  3227. #\mpiv-bar {
  3228.   position: fixed;
  3229.   z-index: 2147483647;
  3230.   top: 0;
  3231.   left: 0;
  3232.   right: 0;
  3233.   opacity: 0;
  3234.   transition: opacity 1s ease .25s;
  3235.   text-align: center;
  3236.   font-family: sans-serif;
  3237.   font-size: 15px;
  3238.   font-weight: bold;
  3239.   background: #0005;
  3240.   color: white;
  3241.   padding: 4px 10px;
  3242.   text-shadow: .5px .5px 2px #000;
  3243. }
  3244. #\mpiv-bar.\mpiv-show {
  3245.   opacity: 1;
  3246. }
  3247. #\mpiv-bar[data-zoom]::after {
  3248.   content: " (" attr(data-zoom) ")";
  3249.   opacity: .8;
  3250. }
  3251. #\mpiv-popup.\mpiv-show {
  3252.   display: inline;
  3253. }
  3254. #\mpiv-popup {
  3255.   display: none;
  3256.   cursor: none;
  3257.   animation: .2s \mpiv-fadein both;
  3258.   transition: box-shadow .25s, background-color .25s;
  3259. ${App.popupStyleBase = `
  3260.   border: none;
  3261.   box-sizing: border-box;
  3262.   position: fixed;
  3263.   z-index: 2147483647;
  3264.   padding: 0;
  3265.   margin: 0;
  3266.   top: 0;
  3267.   left: 0;
  3268.   width: auto;
  3269.   height: auto;
  3270.   transform-origin: top left;
  3271.   max-width: none;
  3272.   max-height: none;
  3273. `}
  3274. }
  3275. #\mpiv-popup.\mpiv-show {
  3276.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3277.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3278.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3279.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3280. }
  3281. #\mpiv-popup.\mpiv-show[loaded] {
  3282.   background-color: ${Util.color('Background')};
  3283.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3284. }
  3285. #\mpiv-popup.\mpiv-zoom-max {
  3286.   image-rendering: pixelated;
  3287. }
  3288. @keyframes \mpiv-fadein {
  3289.   from {
  3290.     opacity: 0;
  3291.     border-color: transparent;
  3292.   }
  3293.   to {
  3294.     opacity: 1;
  3295.   }
  3296. }
  3297. ` + (cfg.globalStatus ? String.raw`
  3298. .\mpiv-loading:not(.\mpiv-preloading) * {
  3299.   cursor: progress !important;
  3300. }
  3301. .\mpiv-edge #\mpiv-popup {
  3302.   cursor: default;
  3303. }
  3304. .\mpiv-error * {
  3305.   cursor: not-allowed !important;
  3306. }
  3307. .\mpiv-ready *, .\mpiv-large * {
  3308.   cursor: zoom-in !important;
  3309. }
  3310. .\mpiv-shift * {
  3311.   cursor: default !important;
  3312. }
  3313. ` : String.raw`
  3314. #\mpiv-popup[\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]) {
  3315.   cursor: progress;
  3316. }
  3317. #\mpiv-popup[\mpiv-status~="edge"] {
  3318.   cursor: default;
  3319. }
  3320. #\mpiv-popup[\mpiv-status~="error"] {
  3321.   cursor: not-allowed;
  3322. }
  3323. #\mpiv-popup[\mpiv-status~="ready"],
  3324. #\mpiv-popup[\mpiv-status~="large"] {
  3325.   cursor: zoom-in;
  3326. }
  3327. #\mpiv-popup[\mpiv-status~="shift"] {
  3328.   cursor: default;
  3329. }
  3330. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3331.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3332.   return App.globalStyle;
  3333. }
  3334.  
  3335. //#region Global utilities
  3336. const clamp = (v, min, max) =>
  3337.   v < min ? min : v > max ? max : v;
  3338.  
  3339. const compareNumbers = (a, b) =>
  3340.   a - b;
  3341.  
  3342. const flattenHtml = str =>
  3343.   str.trim()
  3344.     .replace(/\n\s*/g, '')
  3345.     .replace(/\x20?([:>])\x20/g, '$1');
  3346.  
  3347. const dropEvent = e =>
  3348.   (e.preventDefault(), e.stopPropagation());
  3349.  
  3350. const ensureArray = v =>
  3351.   Array.isArray(v) ? v : [v];
  3352.  
  3353. const modKeyPressed = e =>
  3354.   e.altKey || e.shiftKey || e.ctrlKey || e.metaKey;
  3355.  
  3356. const now = performance.now.bind(performance);
  3357.  
  3358. const sumProps = (...props) =>
  3359.   props.reduce((sum, v) => sum + (parseFloat(v) || 0), 0);
  3360.  
  3361. const tryCatch = function (fn, ...args) {
  3362.   try {
  3363.     return fn.apply(this, args);
  3364.   } catch (e) {}
  3365. };
  3366.  
  3367. const $ = (sel, node = doc) =>
  3368.   node.querySelector(sel) || false;
  3369.  
  3370. const $$ = (sel, node = doc) =>
  3371.   node.querySelectorAll(sel);
  3372.  
  3373. const $create = (tag, props) =>
  3374.   Object.assign(doc.createElement(tag), props);
  3375.  
  3376. const $css = (el, props) =>
  3377.   Object.entries(props).forEach(([k, v]) =>
  3378.     el.style.setProperty(k, v, 'important'));
  3379.  
  3380. const $many = (q, doc) =>
  3381.   q && ensureArray(q).reduce((el, sel) => el || $(sel, doc), null);
  3382.  
  3383. const $prop = (sel, prop, node = doc) =>
  3384.   (node = $(sel, node)) && node[prop] || '';
  3385.  
  3386. const $propUp = (node, prop) =>
  3387.   (node = node.closest(`[${prop}]`)) &&
  3388.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) ||
  3389.   '';
  3390.  
  3391. const $remove = node =>
  3392.   node && node.remove();
  3393. //#endregion
  3394.  
  3395. //#region Init
  3396. const isFF = CSS.supports('-moz-appearance', 'none');
  3397. const AudioContext = window.AudioContext || function () {};
  3398.  
  3399. cfg = new Config({save: true});
  3400.  
  3401. App.enabled = true;
  3402. (cb => doc.body ? cb() : document.addEventListener('DOMContentLoaded', cb, {once: true}))(() => {
  3403.   const el = doc.body.firstElementChild;
  3404.   App.isImageTab = el && el === doc.body.lastElementChild && el.matches('img, video');
  3405.   App.enabled = cfg.imgtab || !App.isImageTab;
  3406. });
  3407.  
  3408. if (window === top)
  3409.   GM_registerMenuCommand('MPIV: configure', setup);
  3410. doc.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  3411.  
  3412. if (['greasyfork.org', 'w9p.co', 'github.com'].includes(hostname)) {
  3413.   doc.addEventListener('click', e => {
  3414.     const el = e.target.closest('blockquote, code, pre');
  3415.     const text = el && el.textContent.trim() || '';
  3416.     let rule;
  3417.     if (!e.button && !modKeyPressed(e) &&
  3418.         text.startsWith('{') && text.endsWith('}') &&
  3419.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text) &&
  3420.         (rule = tryCatch(JSON.parse, text)) &&
  3421.         Object.keys(rule).some(k => /^[degqrsu]$/.test(k))) {
  3422.       setup({rule});
  3423.       dropEvent(e);
  3424.     }
  3425.   });
  3426. }
  3427.  
  3428. window.addEventListener('message', App.onMessage);
  3429. //#endregion