☰

Mouseover Popup Image Viewer

Shows images and videos behind links and thumbnails.

目前为 2020-03-15 提交的版本。查看 最新版本。

  1. //#region Meta
  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     1.1.7
  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. //#endregion
  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}${k}`})));
  56. const WHEEL_EVENT = 'onwheel' in doc ? 'wheel' : 'mousewheel';
  57. // time for volatile things to settle down meanwhile we postpone action
  58. // examples: loading image from cache, quickly moving mouse over one element to another
  59. const SETTLE_TIME = 50;
  60. // used to detect JS code in host rules
  61. const RX_HAS_CODE = /(^|[^-\w])return[\W\s]/;
  62. const ZOOM_MAX = 16;
  63.  
  64. //#endregion
  65.  
  66. const App = {
  67.  
  68.   activate(info, event) {
  69.     const {match, node, rule, url} = info;
  70.     const force = event.ctrlKey;
  71.     const scale = !force && Calc.scaleGain(url, node.parentNode);
  72.     if (elConfig) console.info(Object.assign({node, rule, url, match}, scale && {scale}));
  73.     if (scale && scale < cfg.scale)
  74.       return;
  75.     if (ai.node)
  76.       App.deactivate();
  77.     ai = info;
  78.     ai.gNum = 0;
  79.     ai.zooming = cfg.css.includes(`${PREFIX}zooming`);
  80.     Util.suppressTooltip();
  81.     Calc.updateViewSize();
  82.     Events.toggle(true);
  83.     Events.trackMouse(event);
  84.     if (force) {
  85.       App.start();
  86.     } else if (cfg.start === 'auto' && !rule.manual) {
  87.       App.belate();
  88.     } else {
  89.       Status.set('ready');
  90.     }
  91.   },
  92.  
  93.   belate() {
  94.     if (cfg.preload) {
  95.       ai.preloadStart = now();
  96.       App.start();
  97.       Status.set('+preloading');
  98.       setTimeout(Status.set, cfg.delay, '-preloading');
  99.     } else {
  100.       ai.timer = setTimeout(App.start, cfg.delay);
  101.     }
  102.   },
  103.  
  104.   checkProgress({start} = {}) {
  105.     const p = ai.popup;
  106.     if (p) {
  107.       const w = ai.nwidth = p.naturalWidth || p.videoWidth || ai.popupLoaded && innerWidth / 2;
  108.       const h = ai.nheight = p.naturalHeight || p.videoHeight || ai.popupLoaded && innerHeight / 2;
  109.       if (h) {
  110.         App.stopTimers();
  111.         const wait = ai.preloadStart && (ai.preloadStart + cfg.delay - now());
  112.         if (wait > 0) {
  113.           ai.timer = setTimeout(App.checkProgress, wait);
  114.         } else if ((ai.urls || 0).length && Math.max(w, h) < 130) {
  115.           App.handleError({type: 'error'});
  116.         } else {
  117.           App.commit();
  118.         }
  119.         return;
  120.       }
  121.     }
  122.     if (start)
  123.       ai.timerProgress = setInterval(App.checkProgress, 150);
  124.   },
  125.  
  126.   async commit() {
  127.     App.updateStyles();
  128.     Calc.naturalSize();
  129.     const p = ai.popup;
  130.     p.className = `${PREFIX}show`;
  131.     p.removeAttribute('style');
  132.     Calc.updateExtras();
  133.     Calc.updateScales();
  134.     Status.set(false);
  135.     const willZoom = cfg.zoom === 'auto' || App.isImageTab && cfg.imgtab;
  136.     const willMove = !willZoom || App.toggleZoom({keepScale: true}) === undefined;
  137.     if (willMove)
  138.       Popup.move();
  139.     Bar.updateTitle();
  140.     if (!ai.bar)
  141.       Bar.updateFileInfo();
  142.     ai.large = ai.nwidth > p.clientWidth + ai.extras.w ||
  143.                ai.nheight > p.clientHeight + ai.extras.h;
  144.     if (ai.large)
  145.       Status.set('large');
  146.     // FF renders a blank bg+border first; I couldn't find a proper solution
  147.     if (p.complete && isFF && ai.large)
  148.       p.style.backgroundImage = `url('${p.src}')`;
  149.   },
  150.  
  151.   deactivate({wait} = {}) {
  152.     App.stopTimers();
  153.     if (ai.req)
  154.       tryCatch.call(ai.req, ai.req.abort);
  155.     if (ai.tooltip)
  156.       ai.tooltip.node.title = ai.tooltip.text;
  157.     Status.set(false);
  158.     Bar.set(false);
  159.     Events.toggle(false);
  160.     Popup.destroy();
  161.     if (wait) {
  162.       App.enabled = false;
  163.       setTimeout(App.enable, 200);
  164.     }
  165.     ai = {rule: {}};
  166.   },
  167.  
  168.   enable() {
  169.     App.enabled = true;
  170.   },
  171.  
  172.   handleError(e, rule = ai.rule) {
  173.     if (isGoogleImages && cfg.xhr && !ai.xhr) {
  174.       ai.xhr = true;
  175.       console.debug('Retrying in XHR mode', ai.url);
  176.       App.startSingle();
  177.       return;
  178.     }
  179.     const fe = Util.formatError(e, rule);
  180.     if (!rule || !ai.urls || !ai.urls.length)
  181.       console.warn(fe.consoleFormat, ...fe.consoleArgs);
  182.     if (ai.urls && ai.urls.length) {
  183.       ai.url = ai.urls.shift();
  184.       if (ai.url) {
  185.         App.stopTimers();
  186.         App.startSingle();
  187.       } else {
  188.         App.deactivate();
  189.       }
  190.     } else if (ai.node) {
  191.       Status.set('error');
  192.       Bar.set(fe.message, 'error');
  193.     }
  194.   },
  195.  
  196.   /** @param {MessageEvent} e */
  197.   onMessage(e) {
  198.     if (typeof e.data === 'string' && e.data === MSG.getViewSize) {
  199.       for (const el of doc.getElementsByTagName('iframe')) {
  200.         if (el.contentWindow === e.source) {
  201.           const [w, h] = Calc.frameSize(el, window);
  202.           e.source.postMessage(`${MSG.viewSize}:${w}:${h}`, '*');
  203.           return;
  204.         }
  205.       }
  206.     }
  207.   },
  208.  
  209.   /** @param {MessageEvent} e */
  210.   onMessageChild(e) {
  211.     if (e.source === parent && typeof e.data === 'string' && e.data.startsWith(MSG.viewSize)) {
  212.       window.removeEventListener('message', App.onMessageChild);
  213.       const [w, h] = e.data.split(':').slice(1).map(parseFloat);
  214.       if (w && h) ai.view = {w, h};
  215.     }
  216.   },
  217.  
  218.   start() {
  219.     // check explicitly as the cursor may have moved into an iframe so mouseout wasn't reported
  220.     if (!ai.node.closest(':hover')) {
  221.       App.deactivate();
  222.       return;
  223.     }
  224.     App.updateStyles();
  225.     if (ai.gallery)
  226.       App.startGallery();
  227.     else
  228.       App.startSingle();
  229.   },
  230.  
  231.   startSingle() {
  232.     Status.loading();
  233.     ai.imageUrl = null;
  234.     if (ai.rule.follow && !ai.rule.q && !ai.rule.s) {
  235.       Remoting.findRedirect();
  236.     } else if (ai.rule.q && !Array.isArray(ai.urls)) {
  237.       App.startFromQ();
  238.     } else {
  239.       Ruler.runC();
  240.       Popup.create(ai.url);
  241.     }
  242.   },
  243.  
  244.   async startFromQ() {
  245.     try {
  246.       const {responseText, doc, finalUrl} = await Remoting.getDoc(ai.url);
  247.       const url = Ruler.runQ(responseText, doc, finalUrl);
  248.       if (!url)
  249.         throw 'The "q" rule did not produce any URL.';
  250.       Ruler.runC(responseText, doc);
  251.       if (RuleMatcher.isFollowableUrl(url, ai.rule)) {
  252.         const info = RuleMatcher.find(url, ai.node, {noHtml: true});
  253.         if (!info || !info.url)
  254.           throw `Couldn't follow URL: ${url}`;
  255.         Object.assign(ai, info);
  256.         App.startSingle();
  257.       } else {
  258.         Popup.create(url, finalUrl);
  259.       }
  260.     } catch (e) {
  261.       App.handleError(e);
  262.     }
  263.   },
  264.  
  265.   async startGallery() {
  266.     Status.loading();
  267.     try {
  268.       const startUrl = ai.url;
  269.       const p = ai.rule.s === 'gallery' ? {} : await Remoting.getDoc(startUrl);
  270.       const items = await new Promise(resolve => {
  271.         const it = ai.gallery(p.responseText, p.doc, p.finalUrl, ai.match, ai.rule, resolve);
  272.         if (Array.isArray(it))
  273.           resolve(it);
  274.       });
  275.       // bail out if the gallery's async callback took too long
  276.       if (ai.url !== startUrl) return;
  277.       ai.gNum = items.length;
  278.       ai.gItems = items.length && items;
  279.       if (ai.gItems) {
  280.         ai.gIndex = Gallery.findIndex(ai.url);
  281.         setTimeout(Gallery.next);
  282.       } else {
  283.         throw 'Empty gallery';
  284.       }
  285.     } catch (e) {
  286.       App.handleError(e);
  287.     }
  288.   },
  289.  
  290.   stopTimers() {
  291.     for (const timer of ['timer', 'timerBar', 'timerStatus'])
  292.       clearTimeout(ai[timer]);
  293.     clearInterval(ai.timerProgress);
  294.   },
  295.  
  296.   toggleZoom({keepScale} = {}) {
  297.     const p = ai.popup;
  298.     if (!p || !ai.scales || ai.scales.length < 2)
  299.       return;
  300.     ai.zoomed = !ai.zoomed;
  301.     ai.scale = ai.zoomed && Calc.scaleForFirstZoom(keepScale) || ai.scales[0];
  302.     if (ai.zooming)
  303.       p.classList.add(`${PREFIX}zooming`);
  304.     Popup.move();
  305.     Bar.updateTitle();
  306.     Status.set(ai.zoomed ? 'zoom' : false);
  307.     if (!ai.zoomed)
  308.       Bar.updateFileInfo();
  309.     return ai.zoomed;
  310.   },
  311.  
  312.   updateStyles() {
  313.     Util.addStyle('global',
  314.       (App.globalStyle || createGlobalStyle()) +
  315.       (cfg.css.includes('{') ? cfg.css : `#${PREFIX}-popup {${(cfg.css)}}`));
  316.     Util.addStyle('rule', ai.rule.css || '');
  317.   },
  318. };
  319.  
  320. const Bar = {
  321.  
  322.   set(label, className) {
  323.     let b = ai.bar;
  324.     if (typeof label !== 'string') {
  325.       $remove(b);
  326.       ai.bar = null;
  327.       return;
  328.     }
  329.     if (!b) b = ai.bar = $create('div', {id: `${PREFIX}bar`});
  330.     App.updateStyles();
  331.     Bar.updateTitle();
  332.     Bar.show();
  333.     b.innerHTML = label;
  334.     if (!b.parentNode) {
  335.       doc.body.appendChild(b);
  336.       Util.forceLayout(b);
  337.     }
  338.     b.className = `${PREFIX}show ${PREFIX}${className}`;
  339.   },
  340.  
  341.   show() {
  342.     clearTimeout(ai.timerBar);
  343.     ai.bar.style.removeProperty('opacity');
  344.     ai.timerBar = setTimeout(() => ai.bar && $css(ai.bar, {opacity: 0}), 3000);
  345.   },
  346.  
  347.   updateFileInfo() {
  348.     const {gItems: gi, gIndex: i, gNum: n} = ai;
  349.     if (gi) {
  350.       const item = gi[i];
  351.       const noDesc = !gi.some(_ => _.desc);
  352.       const c = `${n > 1 ? `[${i + 1}/${n}] ` : ''}${[
  353.         gi.title && (!i || noDesc) && !`${item.desc || ''}`.includes(gi.title) && gi.title || '',
  354.         item.desc,
  355.       ].filter(Boolean).join(' - ')}`;
  356.       Bar.set(c.trim() || ' ', 'gallery', true);
  357.     } else if ('caption' in ai) {
  358.       Bar.set(ai.caption, 'caption');
  359.     } else if (ai.tooltip) {
  360.       Bar.set(ai.tooltip.text, 'tooltip');
  361.     } else {
  362.       Bar.set(' ', 'info');
  363.     }
  364.   },
  365.  
  366.   updateTitle() {
  367.     if (!ai.bar) return;
  368.     const zoom = ai.nwidth && `${
  369.       Math.round(ai.scale * 100)
  370.     }%, ${
  371.       ai.nwidth
  372.     } x ${
  373.       ai.nheight
  374.     } px, ${
  375.       Math.round(100 * (ai.nwidth * ai.nheight / 1e6)) / 100
  376.     } MP`.replace(/\x20/g, '\xA0');
  377.     if (ai.bar.dataset.zoom !== zoom || !ai.nwidth) {
  378.       if (zoom) ai.bar.dataset.zoom = zoom;
  379.       else delete ai.bar.dataset.zoom;
  380.       Bar.show();
  381.     }
  382.   },
  383. };
  384.  
  385. const Calc = {
  386.  
  387.   frameSize(elFrame, parentWindow) {
  388.     if (!elFrame) return;
  389.     const r = elFrame.getBoundingClientRect();
  390.     const w = clamp(r.width, 0, parentWindow.innerWidth - r.left);
  391.     const h = clamp(r.height, 0, parentWindow.innerHeight - r.top);
  392.     return [w, h];
  393.   },
  394.  
  395.   generateScales(fit) {
  396.     let [scale, goal] = fit < 1 ? [fit, 1] : [1, fit];
  397.     const zoomStep = cfg.zoomStep / 100;
  398.     const arr = [scale];
  399.     if (fit !== 1) {
  400.       const diff = goal / scale;
  401.       const steps = Math.log(diff) / Math.log(zoomStep) | 0;
  402.       const step = steps && Math.pow(diff, 1 / steps);
  403.       for (let i = steps; --i > 0;)
  404.         arr.push((scale *= step));
  405.       arr.push(scale = goal);
  406.     }
  407.     while ((scale *= zoomStep) <= ZOOM_MAX)
  408.       arr.push(scale);
  409.     return arr;
  410.   },
  411.  
  412.   naturalSize() {
  413.     let {popup: p, nwidth: nw, nheight: nh} = ai;
  414.     // overriding custom CSS to detect an unrestricted SVG that scales to the entire page
  415.     p.setAttribute('style', 'display:inline !important;' + App.popupStyleBase);
  416.     if (p.clientWidth > nw) {
  417.       const w = clamp(p.clientWidth, nw, innerWidth / 2) | 0;
  418.       nh = ai.nheight = w / nw * nh | 0;
  419.       nw = ai.nwidth = w;
  420.       p.style.cssText = `width: ${nw}px !important; height: ${nh}px !important;`;
  421.     }
  422.   },
  423.  
  424.   rect() {
  425.     let {node, rule} = ai;
  426.     let n = rule.rect && node.closest(rule.rect);
  427.     if (n) return n.getBoundingClientRect();
  428.     const nested = node.getElementsByTagName('*');
  429.     let maxArea = 0;
  430.     let maxBounds;
  431.     n = node;
  432.     for (let i = 0; n; n = nested[i++]) {
  433.       const bounds = n.getBoundingClientRect();
  434.       const area = bounds.width * bounds.height;
  435.       if (area > maxArea) {
  436.         maxArea = area;
  437.         maxBounds = bounds;
  438.         node = n;
  439.       }
  440.     }
  441.     return maxBounds;
  442.   },
  443.  
  444.   placement() {
  445.     if (!ai.popup) return;
  446.     let x, y;
  447.     const {cx, cy, extras, view} = ai;
  448.     const vw = view.w - extras.outw;
  449.     const vh = view.h - extras.outh;
  450.     const w = ai.scale * ai.nwidth + extras.inw;
  451.     const h = ai.scale * ai.nheight + extras.inh;
  452.     if (!ai.zoomed && ai.gNum < 2 && !cfg.center) {
  453.       const r = ai.rect;
  454.       const rx = (r.left + r.right) / 2;
  455.       const ry = (r.top + r.bottom) / 2;
  456.       if (vw - r.right - 40 > w || w < r.left - 40) {
  457.         if (h < vh - 60)
  458.           y = clamp(ry - h / 2, 30, vh - h - 30);
  459.         x = rx > vw / 2 ? r.left - 40 - w : r.right + 40;
  460.       } else if (vh - r.bottom - 40 > h || h < r.top - 40) {
  461.         if (w < vw - 60)
  462.           x = clamp(rx - w / 2, 30, vw - w - 30);
  463.         y = ry > vh / 2 ? r.top - 40 - h : r.bottom + 40;
  464.       }
  465.     }
  466.     if (x == null)
  467.       x = (vw - w) * (vw > w ? .5 : clamp(5 / 3 * (cx / vw - .2), 0, 1));
  468.     if (y == null)
  469.       y = (vh - h) * (vh > h ? .5 : clamp(5 / 3 * (cy / vh - .2), 0, 1));
  470.     return {
  471.       x: Math.round(x + extras.o),
  472.       y: Math.round(y + extras.o),
  473.       w: Math.round(w),
  474.       h: Math.round(h),
  475.     };
  476.   },
  477.  
  478.   scaleBiggerThan(scale, i, arr) {
  479.     return scale >= this && (!i || Math.abs(scale - arr[i - 1]) > .01);
  480.   },
  481.  
  482.   scaleIndex(dir) {
  483.     const i = ai.scales.indexOf(ai.scale);
  484.     if (i >= 0) return i + dir;
  485.     for (
  486.       let len = ai.scales.length,
  487.         i = dir > 0 ? 0 : len - 1;
  488.       i >= 0 && i < len;
  489.       i += dir
  490.     ) {
  491.       if (Math.sign(ai.scales[i] - ai.scale) === dir)
  492.         return i;
  493.     }
  494.     return -1;
  495.   },
  496.  
  497.   scaleForFirstZoom(keepScale) {
  498.     const z = ai.scaleZoom;
  499.     return keepScale || z !== ai.scale ? z : ai.scales.find(x => x > z);
  500.   },
  501.  
  502.   scaleGain(url, parent) {
  503.     const imgs = $$('img, video', parent);
  504.     for (let i = imgs.length, img; (img = imgs[--i]);) {
  505.       if ((img.currentSrc || img.src) !== url || img.sizes)
  506.         continue;
  507.       const scaleX = (img.naturalWidth || img.videoWidth) / img.offsetWidth;
  508.       const scaleY = (img.naturalHeight || img.videoHeight) / img.offsetHeight;
  509.       const s = Math.max(scaleX, scaleY);
  510.       if (isFinite(s))
  511.         return s;
  512.     }
  513.   },
  514.  
  515.   updateExtras() {
  516.     const s = getComputedStyle(ai.popup);
  517.     const o2 = sumProps(s.outlineOffset, s.outlineWidth) * 2;
  518.     const inw = sumProps(s.paddingLeft, s.paddingRight, s.borderLeftWidth, s.borderRightWidth);
  519.     const inh = sumProps(s.paddingTop, s.paddingBottom, s.borderTopWidth, s.borderBottomWidth);
  520.     const outw = o2 + sumProps(s.marginLeft, s.marginRight);
  521.     const outh = o2 + sumProps(s.marginTop, s.marginBottom);
  522.     ai.extras = {
  523.       inw, inh,
  524.       outw, outh,
  525.       o: o2 / 2,
  526.       w: inw + outw,
  527.       h: inh + outh,
  528.     };
  529.   },
  530.  
  531.   updateScales() {
  532.     const fit = Math.min(
  533.       (ai.view.w - ai.extras.w) / ai.nwidth,
  534.       (ai.view.h - ai.extras.h) / ai.nheight) || 1;
  535.     const isCustom = !cfg.fit && cfg.scales.length;
  536.     let cutoff = Math.min(1, fit);
  537.     let scaleZoom = cfg.fit === 'all' && fit || cfg.fit === 'no' && 1 || cutoff;
  538.     if (isCustom) {
  539.       const dst = [];
  540.       for (const scale of cfg.scales) {
  541.         const val = parseFloat(scale) || fit;
  542.         dst.push(val);
  543.         if (isCustom && typeof scale === 'string') {
  544.           if (scale.includes('!')) cutoff = val;
  545.           if (scale.includes('*')) scaleZoom = val;
  546.         }
  547.       }
  548.       ai.scales = dst.sort(compareNumbers).filter(Calc.scaleBiggerThan, cutoff);
  549.     } else {
  550.       ai.scales = Calc.generateScales(fit);
  551.     }
  552.     ai.scale = cfg.zoom === 'auto' ? scaleZoom : Math.min(1, fit);
  553.     ai.scaleFit = fit;
  554.     ai.scaleZoom = scaleZoom;
  555.   },
  556.  
  557.   updateViewSize() {
  558.     const view = doc.compatMode === 'BackCompat' ? doc.body : doc.documentElement;
  559.     ai.view = {
  560.       w: view.clientWidth,
  561.       h: view.clientHeight,
  562.     };
  563.     if (window === top) return;
  564.     const [w, h] = Calc.frameSize(frameElement, parent) || [];
  565.     if (w && h) {
  566.       ai.view = {w, h};
  567.     } else {
  568.       window.addEventListener('message', App.onMessageChild);
  569.       parent.postMessage(MSG.getViewSize, '*');
  570.     }
  571.   },
  572. };
  573.  
  574. class Config {
  575.  
  576.   constructor({data: c = GM_getValue('cfg'), save}) {
  577.     if (typeof c === 'string')
  578.       c = tryCatch(JSON.parse, c);
  579.     if (typeof c !== 'object' || !c)
  580.       c = {};
  581.     const {DEFAULTS} = Config;
  582.     c.fit = ['all', 'large', 'no', ''].includes(c.fit) ? c.fit :
  583.       !(c.scales || 0).length || `${c.scales}` === `${DEFAULTS.scales}` ? 'large' :
  584.         '';
  585.     if (c.version !== DEFAULTS.version) {
  586.       if (typeof c.hosts === 'string')
  587.         c.hosts = c.hosts.split('\n')
  588.           .map(s => tryCatch(JSON.parse, s) || s)
  589.           .filter(Boolean);
  590.       if (c.close === true || c.close === false)
  591.         c.zoomOut = c.close ? 'auto' : 'stay';
  592.       for (const key in DEFAULTS)
  593.         if (typeof c[key] !== typeof DEFAULTS[key])
  594.           c[key] = DEFAULTS[key];
  595.       if (c.version === 3 && c.scales[0] === 0)
  596.         c.scales[0] = '0!';
  597.       for (const key in c)
  598.         if (!(key in DEFAULTS))
  599.           delete c[key];
  600.       c.version = DEFAULTS.version;
  601.       if (save)
  602.         GM_setValue('cfg', c);
  603.     }
  604.     if (Object.keys(cfg || {}).some(k => /^ui|^(css|globalStatus)$/.test(k) && cfg[k] !== c[k]))
  605.       App.globalStyle = '';
  606.     if (!Array.isArray(c.scales))
  607.       c.scales = [];
  608.     c.scales = [...new Set(c.scales)].sort((a, b) => parseFloat(a) - parseFloat(b));
  609.     Object.assign(this, DEFAULTS, c);
  610.   }
  611. }
  612.  
  613. /** @type mpiv.Config */
  614. Config.DEFAULTS = Object.assign(Object.create(null), {
  615.   center: false,
  616.   css: '',
  617.   delay: 500,
  618.   fit: '',
  619.   globalStatus: false,
  620.   // prefer ' inside rules because " will be displayed as \"
  621.   // example: "img[src*='icon']"
  622.   hosts: [{
  623.     name: 'No popup for YouTube thumbnails',
  624.     d: 'www.youtube.com',
  625.     e: 'ytd-rich-item-renderer *, ytd-thumbnail *',
  626.     s: '',
  627.   }, {
  628.     name: 'No popup for SVG/PNG icons',
  629.     d: '',
  630.     e: "img[src*='icon']",
  631.     r: '//[^/]+/.*\\bicons?\\b.*\\.(?:png|svg)',
  632.     s: '',
  633.   }],
  634.   imgtab: false,
  635.   preload: false,
  636.   scale: 1.25,
  637.   scales: ['0!', 0.125, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 5, 8, 16],
  638.   start: 'auto',
  639.   uiBackgroundColor: '#ffffff',
  640.   uiBackgroundOpacity: 100,
  641.   uiBorderColor: '#000000',
  642.   uiBorderOpacity: 100,
  643.   uiBorder: 0,
  644.   uiShadowColor: '#000000',
  645.   uiShadowOpacity: 80,
  646.   uiShadow: 20,
  647.   uiPadding: 0,
  648.   uiMargin: 0,
  649.   version: 6,
  650.   xhr: true,
  651.   zoom: 'context',
  652.   zoomOut: 'auto',
  653.   zoomStep: 150,
  654. });
  655.  
  656. const Events = {
  657.  
  658.   hoverData: [],
  659.   hoverTimer: 0,
  660.  
  661.   onMouseOver(e) {
  662.     if (!App.enabled || e.shiftKey || ai.zoomed)
  663.       return;
  664.     let node = e.target;
  665.     if (node === ai.popup ||
  666.         node === doc.body ||
  667.         node === doc.documentElement ||
  668.         node === elConfig ||
  669.         ai.gallery && ai.rectHovered)
  670.       return;
  671.     if (node.shadowRoot)
  672.       node = Events.pierceShadow(node, e.clientX, e.clientY);
  673.     // we don't want to process everything in the path of a quickly moving mouse cursor
  674.     Events.hoverData = [now(), e, node];
  675.     Events.hoverTimer = Events.hoverTimer || setTimeout(Events.onMouseOverThrottled, SETTLE_TIME);
  676.   },
  677.  
  678.   onMouseOverThrottled() {
  679.     const [start, e, node] = Events.hoverData;
  680.     // clearTimeout + setTimeout is expensive so we'll use the cheaper perf.now() for rescheduling
  681.     const wait = start + SETTLE_TIME - now();
  682.     Events.hoverTimer = wait > 10 && setTimeout(Events.onMouseOverThrottled, wait);
  683.     if (Events.hoverTimer)
  684.       return;
  685.     if (!node.closest(':hover'))
  686.       return;
  687.     if (!Ruler.rules)
  688.       Ruler.init();
  689.     let a;
  690.     const tag = node.tagName;
  691.     const src = node.currentSrc || node.src;
  692.     const isPic = tag === 'IMG' || tag === 'VIDEO' && /\.(webm|mp4)(\?|$)/.test(src);
  693.     const info =
  694.       // note that data URLs aren't passed to rules as those may have fatally ineffective regexps
  695.       tag !== 'A' &&
  696.         RuleMatcher.find(isPic && !src.startsWith('data:') && Util.rel2abs(src), node) ||
  697.       (a = node.closest('A')) &&
  698.         RuleMatcher.findForLink(a) ||
  699.       isPic &&
  700.         {node, rule: {}, url: src};
  701.     if (info && info.url && info.node !== ai.node)
  702.       App.activate(info, e);
  703.   },
  704.  
  705.   onMouseOut(e) {
  706.     if (!e.relatedTarget && !e.shiftKey)
  707.       App.deactivate();
  708.   },
  709.  
  710.   onMouseOutShadow(e) {
  711.     const root = e.target.shadowRoot;
  712.     if (root) {
  713.       root.removeEventListener('mouseover', Events.onMouseOver);
  714.       root.removeEventListener('mouseout', Events.onMouseOutShadow);
  715.     }
  716.   },
  717.  
  718.   onMouseMove(e) {
  719.     Events.trackMouse(e);
  720.     if (e.shiftKey) {
  721.       ai.lazyUnload = true;
  722.     } else if (!ai.zoomed && !ai.rectHovered) {
  723.       App.deactivate();
  724.     } else if (ai.zoomed) {
  725.       Popup.move();
  726.       const {cx, cy, view: {w, h}} = ai;
  727.       const bx = w / 6;
  728.       const by = h / 6;
  729.       const onEdge = cx < bx || cx > w - bx || cy < by || cy > h - by;
  730.       Status.set(`${onEdge ? '+' : '-'}edge`);
  731.     }
  732.   },
  733.  
  734.   onMouseDown({shiftKey, button}) {
  735.     if (button === 0 && shiftKey && ai.popup && ai.popup.controls) {
  736.       ai.controlled = ai.zoomed = true;
  737.     } else if (button === 2 || shiftKey) {
  738.       // we ignore RMB and Shift
  739.     } else {
  740.       App.deactivate({wait: true});
  741.       document.addEventListener('mouseup', App.enable, {once: true});
  742.     }
  743.   },
  744.  
  745.   onMouseScroll(e) {
  746.     const dir = (e.deltaY || -e.wheelDelta) < 0 ? 1 : -1;
  747.     if (ai.zoomed) {
  748.       Events.zoomInOut(dir);
  749.     } else if (ai.gNum > 1 && ai.popup) {
  750.       Gallery.next(-dir);
  751.     } else if (cfg.zoom === 'wheel' && dir > 0 && ai.popup) {
  752.       App.toggleZoom();
  753.     } else {
  754.       App.deactivate();
  755.       return;
  756.     }
  757.     dropEvent(e);
  758.   },
  759.  
  760.   onKeyDown(e) {
  761.     switch (e.key) {
  762.       case 'Shift':
  763.         Status.set('+shift');
  764.         if (ai.popup && 'controls' in ai.popup)
  765.           ai.popup.controls = true;
  766.         break;
  767.       case 'Control':
  768.         if (!ai.popup && (cfg.start !== 'auto' || ai.rule.manual))
  769.           App.start();
  770.         break;
  771.     }
  772.   },
  773.  
  774.   onKeyUp(e) {
  775.     switch (e.key.length > 1 ? e.key : e.code) {
  776.       case 'Shift':
  777.         Status.set('-shift');
  778.         if ((ai.popup || {}).controls)
  779.           ai.popup.controls = false;
  780.         if (ai.controlled) {
  781.           ai.controlled = false;
  782.           return;
  783.         }
  784.         if (ai.popup && (ai.zoomed || ai.rectHovered !== false))
  785.           App.toggleZoom();
  786.         else
  787.           App.deactivate({wait: true});
  788.         break;
  789.       case 'Control':
  790.         break;
  791.       case 'Escape':
  792.         App.deactivate({wait: true});
  793.         break;
  794.       case 'ArrowRight':
  795.       case 'KeyJ':
  796.         dropEvent(e);
  797.         Gallery.next(1);
  798.         break;
  799.       case 'ArrowLeft':
  800.       case 'KeyK':
  801.         dropEvent(e);
  802.         Gallery.next(-1);
  803.         break;
  804.       case 'KeyD': {
  805.         dropEvent(e);
  806.         Remoting.saveFile();
  807.         break;
  808.       }
  809.       case 'KeyT':
  810.         ai.lazyUnload = true;
  811.         GM_openInTab(Util.tabFixUrl() || ai.popup.src);
  812.         App.deactivate();
  813.         break;
  814.       default:
  815.         App.deactivate({wait: true});
  816.     }
  817.   },
  818.  
  819.   onContext(e) {
  820.     if (e.shiftKey) return;
  821.     if (cfg.zoom === 'context' && ai.popup && App.toggleZoom()) {
  822.       dropEvent(e);
  823.     } else if (!ai.popup && (cfg.start === 'context' || (cfg.start === 'auto' && ai.rule.manual))) {
  824.       App.start();
  825.       dropEvent(e);
  826.     } else {
  827.       setTimeout(App.deactivate, SETTLE_TIME, {wait: true});
  828.     }
  829.   },
  830.  
  831.   pierceShadow(node, x, y) {
  832.     for (let root; (root = node.shadowRoot);) {
  833.       root.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  834.       root.addEventListener('mouseout', Events.onMouseOutShadow);
  835.       const inner = root.elementFromPoint(x, y);
  836.       if (!inner || inner === node)
  837.         break;
  838.       node = inner;
  839.     }
  840.     return node;
  841.   },
  842.  
  843.   toggle(enable) {
  844.     const onOff = enable ? doc.addEventListener : doc.removeEventListener;
  845.     const passive = enable ? {passive: true} : undefined;
  846.     onOff.call(doc, 'mousemove', Events.onMouseMove, passive);
  847.     onOff.call(doc, 'mouseout', Events.onMouseOut, passive);
  848.     onOff.call(doc, 'mousedown', Events.onMouseDown, passive);
  849.     onOff.call(doc, 'contextmenu', Events.onContext);
  850.     onOff.call(doc, 'keydown', Events.onKeyDown);
  851.     onOff.call(doc, 'keyup', Events.onKeyUp);
  852.     onOff.call(doc, WHEEL_EVENT, Events.onMouseScroll, enable ? {passive: false} : undefined);
  853.   },
  854.  
  855.   trackMouse(e) {
  856.     const cx = ai.cx = e.clientX;
  857.     const cy = ai.cy = e.clientY;
  858.     const r = ai.rect || (ai.rect = Calc.rect());
  859.     ai.rectHovered =
  860.       cx > r.left - 2 && cx < r.right + 2 &&
  861.       cy > r.top - 2 && cy < r.bottom + 2;
  862.   },
  863.  
  864.   zoomInOut(dir) {
  865.     const i = Calc.scaleIndex(dir);
  866.     const n = ai.scales.length;
  867.     if (i >= 0 && i < n)
  868.       ai.scale = ai.scales[i];
  869.     const zo = cfg.zoomOut;
  870.     if (i <= 0 && zo !== 'stay') {
  871.       if (ai.scaleFit < ai.scale * .99) {
  872.         ai.scales.unshift(ai.scale = ai.scaleFit);
  873.       } else if ((i <= 0 && zo === 'close' || i < 0 && !ai.rectHovered) && ai.gNum < 2) {
  874.         App.deactivate({wait: true});
  875.         return;
  876.       }
  877.       ai.zoomed = false;
  878.       Bar.updateFileInfo();
  879.     } else {
  880.       ai.popup.classList.toggle(`${PREFIX}zoom-max`, ai.scale >= 4 && i >= n - 1);
  881.     }
  882.     if (ai.zooming)
  883.       ai.popup.classList.add(`${PREFIX}zooming`);
  884.     Popup.move();
  885.     Bar.updateTitle();
  886.   },
  887. };
  888.  
  889. const Gallery = {
  890.  
  891.   makeParser(g) {
  892.     return (
  893.       typeof g === 'function' ? g :
  894.         typeof g === 'string' ? Util.newFunction('text', 'doc', 'url', 'm', 'rule', 'cb', g) :
  895.           Gallery.defaultParser
  896.     );
  897.   },
  898.  
  899.   findIndex(gUrl) {
  900.     const sel = gUrl.split('#')[1];
  901.     if (!sel)
  902.       return 0;
  903.     if (/^\d+$/.test(sel))
  904.       return parseInt(sel);
  905.     for (let i = ai.gNum; i--;) {
  906.       let {url} = ai.gItems[i];
  907.       if (Array.isArray(url))
  908.         url = url[0];
  909.       if (url.indexOf(sel, url.lastIndexOf('/')) > 0)
  910.         return i;
  911.     }
  912.     return 0;
  913.   },
  914.  
  915.   next(dir) {
  916.     if (dir) ai.gIndex = Gallery.nextIndex(dir);
  917.     const item = ai.gItems[ai.gIndex];
  918.     if (Array.isArray(item.url)) {
  919.       ai.urls = item.url.slice(1);
  920.       ai.url = item.url[0];
  921.     } else {
  922.       ai.urls = null;
  923.       ai.url = item.url;
  924.     }
  925.     Popup.destroy();
  926.     App.startSingle();
  927.     Bar.updateFileInfo();
  928.     Gallery.preload(dir);
  929.   },
  930.  
  931.   nextIndex(dir) {
  932.     return (ai.gIndex + dir + ai.gNum) % ai.gNum;
  933.   },
  934.  
  935.   preload(dir) {
  936.     if (!ai.popup || !dir) return;
  937.     ai.preloadUrl = ensureArray(ai.gItems[Gallery.nextIndex(dir)].url)[0];
  938.     ai.popup.addEventListener('load', Gallery.preloadOnLoad, {once: true});
  939.   },
  940.  
  941.   preloadOnLoad() {
  942.     $create('img', {src: ai.preloadUrl});
  943.   },
  944.  
  945.   defaultParser(text, doc, docUrl, m, rule) {
  946.     const {g} = rule;
  947.     const qEntry = g.entry;
  948.     const qCaption = ensureArray(g.caption);
  949.     const qImage = g.image;
  950.     const qTitle = g.title;
  951.     const fix =
  952.       (typeof g.fix === 'string' ? Util.newFunction('s', 'isURL', g.fix) : g.fix) ||
  953.       (s => s.trim());
  954.     const items = [...$$(qEntry || qImage, doc)]
  955.       .map(processEntry)
  956.       .filter(Boolean);
  957.     items.title = processTitle();
  958.     return items;
  959.  
  960.     function processEntry(entry) {
  961.       const item = {};
  962.       try {
  963.         const img = qEntry ? $(qImage, entry) : entry;
  964.         item.url = fix(Remoting.findImageUrl(img, docUrl), true);
  965.         item.desc = qCaption.map(processCaption, entry).filter(Boolean).join(' - ');
  966.       } catch (e) {}
  967.       return item.url && item;
  968.     }
  969.  
  970.     function processCaption(selector) {
  971.       const el = $(selector, this) ||
  972.                  $orSelf(selector, this.previousElementSibling) ||
  973.                  $orSelf(selector, this.nextElementSibling);
  974.       return el && fix(el.textContent);
  975.     }
  976.  
  977.     function processTitle() {
  978.       const el = $(qTitle, doc);
  979.       return el && fix(el.getAttribute('content') || el.textContent) || '';
  980.     }
  981.  
  982.     function $orSelf(selector, el) {
  983.       if (el && !el.matches(qEntry))
  984.         return el.matches(selector) ? el : $(selector, el);
  985.     }
  986.   },
  987. };
  988.  
  989. const Popup = {
  990.  
  991.   async create(src, pageUrl) {
  992.     Popup.destroy();
  993.     ai.imageUrl = src;
  994.     if (ai.xhr && src)
  995.       src = await Remoting.getImage(src, pageUrl).catch(App.handleError);
  996.     if (!src) return;
  997.     const isVideo = Util.isVideoUrl(src);
  998.     const p = ai.popup = isVideo ? PopupVideo.create() : $create('img');
  999.     p.id = `${PREFIX}popup`;
  1000.     p.src = src;
  1001.     p.addEventListener('error', App.handleError);
  1002.     if (ai.zooming)
  1003.       p.addEventListener('transitionend', Popup.onZoom);
  1004.     doc.body.insertBefore(p, ai.bar || undefined);
  1005.     await 0;
  1006.     App.checkProgress({start: true});
  1007.     if (p.complete)
  1008.       Popup.onLoad.call(ai.popup);
  1009.     else if (!isVideo)
  1010.       p.addEventListener('load', Popup.onLoad, {once: true});
  1011.   },
  1012.  
  1013.   destroy() {
  1014.     const p = ai.popup;
  1015.     if (!p) return;
  1016.     p.removeEventListener('error', App.handleError);
  1017.     if (typeof p.pause === 'function')
  1018.       p.pause();
  1019.     if (!ai.lazyUnload) {
  1020.       if (p.src.startsWith('blob:'))
  1021.         URL.revokeObjectURL(p.src);
  1022.       p.src = '';
  1023.     }
  1024.     p.remove();
  1025.     ai.zoomed = ai.popup = ai.popupLoaded = null;
  1026.   },
  1027.  
  1028.   move() {
  1029.     const p = Calc.placement();
  1030.     $css(ai.popup, {
  1031.       transform: `translate(${p.x}px, ${p.y}px)`,
  1032.       width: `${p.w}px`,
  1033.       height: `${p.h}px`,
  1034.     });
  1035.   },
  1036.  
  1037.   onLoad() {
  1038.     this.setAttribute('loaded', '');
  1039.     ai.popupLoaded = true;
  1040.     if (!ai.bar)
  1041.       Bar.updateFileInfo();
  1042.   },
  1043.  
  1044.   onZoom() {
  1045.     this.classList.remove(`${PREFIX}zooming`);
  1046.   },
  1047. };
  1048.  
  1049. const PopupVideo = {
  1050.   create() {
  1051.     const p = $create('video');
  1052.     p.autoplay = true;
  1053.     p.loop = true;
  1054.     p.volume = 0.5;
  1055.     p.controls = false;
  1056.     p.addEventListener('progress', PopupVideo.progress);
  1057.     p.addEventListener('canplaythrough', PopupVideo.progressDone, {once: true});
  1058.     ai.bufBar = false;
  1059.     ai.bufStart = now();
  1060.     return p;
  1061.   },
  1062.  
  1063.   progress() {
  1064.     const {duration} = this;
  1065.     if (duration && this.buffered.length && now() - ai.bufStart > 2000) {
  1066.       const pct = Math.round(this.buffered.end(0) / duration * 100);
  1067.       if ((ai.bufBar |= pct > 0 && pct < 50))
  1068.         Bar.set(`${pct}% of ${Math.round(duration)}s`, 'xhr');
  1069.     }
  1070.   },
  1071.  
  1072.   async progressDone() {
  1073.     this.removeEventListener('progress', PopupVideo.progress);
  1074.     if (ai.bar && ai.bar.classList.contains(`${PREFIX}xhr`))
  1075.       Bar.set(false);
  1076.     Popup.onLoad.call(this);
  1077.     try {
  1078.       await this.play();
  1079.     } catch (e) {
  1080.     } finally {
  1081.       this.controls |= this.paused;
  1082.     }
  1083.   },
  1084. };
  1085.  
  1086. const Ruler = {
  1087. /*
  1088.  'u' works only with URLs so it's ignored if 'html' is true
  1089.    ||some.domain = matches some.domain, anything.some.domain, etc.
  1090.    |foo = url or text must start with foo
  1091.    ^ = separator like / or ? or : but not a letter/number, not %._-
  1092.        when used at the end like "foo^" it additionally matches when the source ends with "foo"
  1093.  'r' is checked only if 'u' matches first
  1094. */
  1095.   init() {
  1096.     const errors = new Map();
  1097.     const customRules = (cfg.hosts || []).map(Ruler.parse, errors);
  1098.     for (const rule of errors.keys())
  1099.       App.handleError('Invalid custom host rule:', rule);
  1100.  
  1101.     // rules that disable previewing
  1102.     const disablers = [
  1103.       dotDomain.endsWith('.stackoverflow.com') && {
  1104.         e: '.post-tag, .post-tag img',
  1105.         s: '',
  1106.       },
  1107.       {
  1108.         u: '||disqus.com/',
  1109.         s: '',
  1110.       },
  1111.     ];
  1112.  
  1113.     // optimization: a rule is created only when on domain
  1114.     const perDomain = [
  1115.       hostname.includes('startpage') && {
  1116.         r: /\boiu=(.+)/,
  1117.         s: '$1',
  1118.         follow: true,
  1119.       },
  1120.       dotDomain.endsWith('.4chan.org') && {
  1121.         e: '.is_catalog .thread a[href*="/thread/"], .catalog-thread a[href*="/thread/"]',
  1122.         q: '.op .fileText a',
  1123.         css: '#post-preview{display:none}',
  1124.       },
  1125.       hostname.includes('amazon.') && {
  1126.         r: /.+?images\/I\/.+?\./,
  1127.         s: m => {
  1128.           const uh = doc.getElementById('universal-hover');
  1129.           return uh ? '' : m[0] + 'jpg';
  1130.         },
  1131.         css: '#zoomWindow{display:none!important;}',
  1132.       },
  1133.       dotDomain.endsWith('.bing.com') && {
  1134.         e: 'a[m*="murl"]',
  1135.         r: /murl&quot;:&quot;(.+?)&quot;/,
  1136.         s: '$1',
  1137.         html: true,
  1138.       },
  1139.       dotDomain.endsWith('.deviantart.com') && {
  1140.         e: '[data-super-full-img] *, img[src*="/th/"]',
  1141.         s: (m, node) =>
  1142.           $propUp(node, 'data-super-full-img') ||
  1143.           (node = node.dataset.embedId && node.nextElementSibling) &&
  1144.           node.dataset.embedId && node.src,
  1145.       },
  1146.       dotDomain.endsWith('.deviantart.com') && {
  1147.         e: '.dev-view-deviation img',
  1148.         s: () => [
  1149.           $('.dev-page-download').href,
  1150.           $('.dev-content-full').src,
  1151.         ].filter(Boolean),
  1152.       },
  1153.       dotDomain.endsWith('.deviantart.com') && {
  1154.         u: ',strp/',
  1155.         s: '/\\/v1\\/.*//',
  1156.       },
  1157.       dotDomain.endsWith('.dropbox.com') && {
  1158.         r: /(.+?&size_mode)=\d+(.*)/,
  1159.         s: '$1=5$2',
  1160.       },
  1161.       dotDomain.endsWith('.facebook.com') && {
  1162.         e: 'a[href*="ref=hovercard"]',
  1163.         s: (m, node) =>
  1164.           'https://www.facebook.com/photo.php?fbid=' +
  1165.           /\/[0-9]+_([0-9]+)_/.exec($('img', node).src)[1],
  1166.         follow: true,
  1167.       },
  1168.       dotDomain.endsWith('.facebook.com') && {
  1169.         r: /(fbcdn|external).*?(app_full_proxy|safe_image).+?(src|url)=(http.+?)[&"']/,
  1170.         s: (m, node) =>
  1171.           node.parentNode.className.includes('video') && m[4].includes('fbcdn') ? '' :
  1172.             decodeURIComponent(m[4]),
  1173.         html: true,
  1174.         follow: true,
  1175.       },
  1176.       dotDomain.endsWith('.flickr.com') &&
  1177.       tryCatch(() => unsafeWindow.YUI_config.flickr.api.site_key) && {
  1178.         r: /flickr\.com\/photos\/[^/]+\/(\d+)/,
  1179.         s: m => `https://www.flickr.com/services/rest/?${
  1180.           new URLSearchParams({
  1181.             photo_id: m[1],
  1182.             api_key: unsafeWindow.YUI_config.flickr.api.site_key,
  1183.             method: 'flickr.photos.getSizes',
  1184.             format: 'json',
  1185.             nojsoncallback: 1,
  1186.           }).toString()}`,
  1187.         q: text => JSON.parse(text).sizes.size.pop().source,
  1188.       },
  1189.       dotDomain.endsWith('.github.com') && {
  1190.         r: new RegExp([
  1191.           /(avatars.+?&s=)\d+/,
  1192.           /(raw\.github)(\.com\/.+?\/img\/.+)$/,
  1193.           /\/(github)(\.com\/.+?\/)blob\/([^/]+\/.+?\.(?:png|jpe?g|bmp|gif|cur|ico))$/,
  1194.         ].map(rx => rx.source).join('|')),
  1195.         s: m => `https://${
  1196.           m[1] ? `${m[1]}460` :
  1197.             m[2] ? `${m[2]}usercontent${m[3]}` :
  1198.               `raw.${m[4]}usercontent${m[5]}${m[6]}`
  1199.         }`,
  1200.       },
  1201.       isGoogleImages && {
  1202.         e: 'a[href*="imgres?imgurl="] img',
  1203.         s: (m, node) => new URLSearchParams(node.closest('a').search).get('imgurl'),
  1204.         follow: true,
  1205.       },
  1206.       isGoogleImages && {
  1207.         e: '[data-tbnid] a:not([href])',
  1208.         s: (m, a) => {
  1209.           const a2 = $('a[jsaction*="mousedown"]', a.closest('[data-tbnid]')) || a;
  1210.           new MutationObserver((_, mo) => {
  1211.             mo.disconnect();
  1212.             App.enabled = true;
  1213.             a.alt = a2.innerText;
  1214.             const {left, top} = a.getBoundingClientRect();
  1215.             Events.onMouseOver({target: $('img', a), clientX: left, clientY: top});
  1216.           }).observe(a, {attributes: true, attributeFilter: ['href']});
  1217.           a2.dispatchEvent(new MouseEvent('mousedown', {bubbles: true}));
  1218.         },
  1219.       },
  1220.       dotDomain.endsWith('.instagram.com') && {
  1221.         e: [
  1222.           'a[href*="/p/"]',
  1223.           'article [role="button"][tabindex="0"], article [role="button"][tabindex="0"] div',
  1224.         ],
  1225.         s: (m, node, rule) => {
  1226.           let data, a, n, img, src;
  1227.           if (location.pathname.startsWith('/p/')) {
  1228.             img = $('img[srcset], video', node.parentNode);
  1229.             if (img && (img.localName === 'video' || parseFloat(img.sizes) > 900))
  1230.               src = (img.srcset || img.currentSrc).split(',').pop().split(' ')[0];
  1231.           }
  1232.           if (!src && (n = node.closest('a[href*="/p/"], article'))) {
  1233.             a = n.tagName === 'A' ? n : $('a[href*="/p/"]', n);
  1234.             data = a && tryCatch(this._getEdge, a.pathname.split('/')[2]);
  1235.           }
  1236.           rule.q = data && data.is_video && !data.video_url && 'meta[property="og:video"]';
  1237.           rule.g = a && $('[class*="Carousel"]', a) && rule._g;
  1238.           rule.follow = !data && !rule.g;
  1239.           rule._data = data;
  1240.           rule._img = img;
  1241.           return (
  1242.             !a && !src ? false :
  1243.               !data || rule.q || rule.g ? `${src || a.href}${rule.g ? '?__a=1' : ''}` :
  1244.                 data.video_url || data.display_url);
  1245.         },
  1246.         c: (html, doc, node, rule) =>
  1247.           tryCatch(rule._getCaption, rule._data) || (rule._img || 0).alt || '',
  1248.         anonymous: true,
  1249.         follow: true,
  1250.         _g(text, doc, url, m, rule) {
  1251.           const media = JSON.parse(text).graphql.shortcode_media;
  1252.           const items = media.edge_sidecar_to_children.edges.map(e => ({
  1253.             url: e.node.video_url || e.node.display_url,
  1254.           }));
  1255.           items.title = tryCatch(rule._getCaption, media) || '';
  1256.           return items;
  1257.         },
  1258.         _getCaption: data => data && data.edge_media_to_caption.edges[0].node.text,
  1259.         _getEdge: shortcode => unsafeWindow._sharedData.entry_data.ProfilePage[0].graphql.user
  1260.             .edge_owner_to_timeline_media.edges.find(e => e.node.shortcode === shortcode).node,
  1261.       },
  1262.       ...dotDomain.endsWith('.reddit.com') && [{
  1263.         u: '||i.reddituploads.com/',
  1264.       }, {
  1265.         e: '[data-url*="i.redd.it"] img[src*="thumb"]',
  1266.         s: (m, node) => $propUp(node, 'data-url'),
  1267.       }, {
  1268.         r: /preview(\.redd\.it\/\w+\.(jpe?g|png|gif))/,
  1269.         s: 'https://i$1',
  1270.       }] || [],
  1271.       dotDomain.endsWith('.tumblr.com') && {
  1272.         e: 'div.photo_stage_img, div.photo_stage > canvas',
  1273.         s: (m, node) => /http[^"]+/.exec(node.style.cssText + node.getAttribute('data-img-src'))[0],
  1274.         follow: true,
  1275.       },
  1276.       dotDomain.endsWith('.tweetdeck.twitter.com') && {
  1277.         e: 'a.media-item, a.js-media-image-link',
  1278.         s: (m, node) => /http[^)]+/.exec(node.style.backgroundImage)[0],
  1279.         follow: true,
  1280.       },
  1281.       dotDomain.endsWith('.twitter.com') && {
  1282.         e: '.grid-tweet > .media-overlay',
  1283.         s: (m, node) => node.previousElementSibling.src,
  1284.         follow: true,
  1285.       },
  1286.     ];
  1287.  
  1288.     const main = [
  1289.       {
  1290.         r: /[/?=](https?[^&]+)/,
  1291.         s: '$1',
  1292.         follow: true,
  1293.       },
  1294.       {
  1295.         u: [
  1296.           '||500px.com/photo/',
  1297.           '||cl.ly/',
  1298.           '||cweb-pix.com/',
  1299.           '||ibb.co/',
  1300.           '||imgcredit.xyz/image/',
  1301.         ],
  1302.         r: /\.\w+\/.+/,
  1303.         q: 'meta[property="og:image"]',
  1304.       },
  1305.       {
  1306.         u: 'attachment.php',
  1307.         r: /attachment\.php.+attachmentid/,
  1308.       },
  1309.       {
  1310.         u: '||abload.de/image',
  1311.         q: '#image',
  1312.       },
  1313.       {
  1314.         u: '||deviantart.com/art/',
  1315.         s: (m, node) =>
  1316.           /\b(film|lit)/.test(node.className) || /in Flash/.test(node.title) ?
  1317.             '' :
  1318.             m.input,
  1319.         q: [
  1320.           '#download-button[href*=".jpg"]',
  1321.           '#download-button[href*=".jpeg"]',
  1322.           '#download-button[href*=".gif"]',
  1323.           '#download-button[href*=".png"]',
  1324.           '#gmi-ResViewSizer_fullimg',
  1325.           'img.dev-content-full',
  1326.         ],
  1327.       },
  1328.       {
  1329.         u: '||dropbox.com/s',
  1330.         r: /com\/sh?\/.+\.(jpe?g|gif|png)/i,
  1331.         q: (text, doc) =>
  1332.           $prop('img.absolute-center', 'src', doc).replace(/(size_mode)=\d+/, '$1=5') || false,
  1333.       },
  1334.       {
  1335.         r: /[./]ebay\.[^/]+\/itm\//,
  1336.         q: text =>
  1337.           text.match(/https?:\/\/i\.ebayimg\.com\/[^.]+\.JPG/i)[0]
  1338.             .replace(/~~60_\d+/, '~~60_57'),
  1339.       },
  1340.       {
  1341.         u: '||i.ebayimg.com/',
  1342.         s: (m, node) =>
  1343.           $('.zoom_trigger_mask', node.parentNode) ? '' :
  1344.             m.input.replace(/~~60_\d+/, '~~60_57'),
  1345.       },
  1346.       {
  1347.         u: [
  1348.           '||fastpic.ru/big',
  1349.           '||fastpic.ru/thumb',
  1350.         ],
  1351.         r: /\/\/(?:i(\d+)\.)?([^/]+\/)(big|thumb|view)\/([^.]+?)\.(\w+)/,
  1352.         s: (m, node, rule) => {
  1353.           const a = node.closest('[href*="fastpic.ru"]');
  1354.           const am = a && rule.r.exec(decodeURIComponent(a.href)) || [];
  1355.           const p = a && am[4].split('/');
  1356.           return `https://i${am[1] || m[1] || am[3] === 'view' && p[0]}.${m[2]}big/${
  1357.             am[3] === 'big' ? am[4] : m[4]}.${am[5] || m[5]}?noht=1`;
  1358.         },
  1359.         xhr: () => 'https://fastpic.ru',
  1360.       },
  1361.       {
  1362.         u: '||fastpic.ru/view/',
  1363.         q: 'img[src*="/big/"]',
  1364.         xhr: true,
  1365.       },
  1366.       {
  1367.         u: '||facebook.com/',
  1368.         r: /photo\.php|[^/]+\/photos\//,
  1369.         s: (m, node) =>
  1370.           node.id === 'fbPhotoImage' ? false :
  1371.             /gradient\.png$/.test(m.input) ? '' :
  1372.               m.input.replace('www.facebook.com', 'mbasic.facebook.com'),
  1373.         q: [
  1374.           'div + span > a:first-child:not([href*="tag_faces"])',
  1375.           'div + span > a[href*="tag_faces"] ~ a',
  1376.         ],
  1377.         rect: '#fbProfileCover',
  1378.       },
  1379.       {
  1380.         u: '||fbcdn.',
  1381.         r: /fbcdn.+?[0-9]+_([0-9]+)_[0-9]+_[a-z]\.(jpg|png)/,
  1382.         s: m =>
  1383.           dotDomain.endsWith('.facebook.com') &&
  1384.           tryCatch(() => unsafeWindow.PhotoSnowlift.getInstance().stream.cache.image[m[1]].url) ||
  1385.           false,
  1386.         manual: true,
  1387.       },
  1388.       {
  1389.         u: ['||fbcdn-', 'fbcdn.net/'],
  1390.         r: /(https?:\/\/(fbcdn-[-\w.]+akamaihd|[-\w.]+?fbcdn)\.net\/[-\w/.]+?)_[a-z]\.(jpg|png)(\?[0-9a-zA-Z0-9=_&]+)?/,
  1391.         s: (m, node) => {
  1392.           if (node.id === 'fbPhotoImage') {
  1393.             const a = $('a.fbPhotosPhotoActionsItem[href$="dl=1"]', doc.body);
  1394.             if (a) return a.href.includes(m.input.match(/[0-9]+_[0-9]+_[0-9]+/)[0]) ? '' : a.href;
  1395.           }
  1396.           if (m[4])
  1397.             return false;
  1398.           const pn = node.parentNode;
  1399.           if (pn.outerHTML.includes('/hovercard/'))
  1400.             return '';
  1401.           if (node.outerHTML.includes('profile') && pn.parentNode.href.includes('/photo'))
  1402.             return false;
  1403.           return m[1].replace(/\/[spc][\d.x]+/g, '').replace('/v/', '/') + '_n.' + m[3];
  1404.         },
  1405.         rect: '.photoWrap',
  1406.       },
  1407.       {
  1408.         u: '||flickr.com/photos/',
  1409.         r: /photos\/([0-9]+@N[0-9]+|[a-z0-9_-]+)\/([0-9]+)/,
  1410.         s: m =>
  1411.           m.input.indexOf('/sizes/') < 0 ?
  1412.             `https://www.flickr.com/photos/${m[1]}/${m[2]}/sizes/sq/` :
  1413.             false,
  1414.         q: (text, doc) => {
  1415.           const links = $$('.sizes-list a', doc);
  1416.           return 'https://www.flickr.com' + links[links.length - 1].getAttribute('href');
  1417.         },
  1418.         follow: true,
  1419.       },
  1420.       {
  1421.         u: '||flickr.com/photos/',
  1422.         r: /\/sizes\//,
  1423.         q: '#allsizes-photo > img',
  1424.       },
  1425.       {
  1426.         u: '||gfycat.com/',
  1427.         r: /(gfycat\.com\/)(gifs\/detail\/|iframe\/)?([a-z]+)/i,
  1428.         s: 'https://$1$3',
  1429.         q: [
  1430.           'meta[content$=".webm"]',
  1431.           '#webmsource',
  1432.           'source[src$=".webm"]',
  1433.         ],
  1434.       },
  1435.       {
  1436.         u: [
  1437.           '||googleusercontent.com/proxy',
  1438.           '||googleusercontent.com/gadgets/proxy',
  1439.         ],
  1440.         r: /\.com\/(proxy|gadgets\/proxy.+?(http.+?)&)/,
  1441.         s: m => m[2] ? decodeURIComponent(m[2]) : m.input.replace(/w\d+-h\d+($|-p)/, 'w0-h0'),
  1442.       },
  1443.       {
  1444.         u: [
  1445.           '||googleusercontent.com/',
  1446.           '||ggpht.com/',
  1447.         ],
  1448.         s: (m, node) =>
  1449.           m.input.includes('webcache.') ||
  1450.           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/) ||
  1451.           node.matches('.g-hovercard *, a[href*="profile_redirector"] > img') ?
  1452.             '' :
  1453.             m.input.replace(/\/s\d{2,}-[^/]+|\/w\d+-h\d+/, '/s0')
  1454.               .replace(/=[-\w]+([&#].*|$)/, ''),
  1455.       },
  1456.       {
  1457.         u: '||gravatar.com/',
  1458.         r: /([a-z0-9]{32})/,
  1459.         s: 'https://gravatar.com/avatar/$1?s=200',
  1460.       },
  1461.       {
  1462.         u: '//gyazo.com/',
  1463.         r: /\.com\/\w{32,}/,
  1464.         q: 'meta[name="twitter:image"]',
  1465.         xhr: true,
  1466.       },
  1467.       {
  1468.         u: '||hostingkartinok.com/show-image.php',
  1469.         q: '.image img',
  1470.       },
  1471.       {
  1472.         u: [
  1473.           '||imagecurl.com/images/',
  1474.           '||imagecurl.com/viewer.php',
  1475.         ],
  1476.         r: /(?:images\/(\d+)_thumb|file=(\d+))(\.\w+)/,
  1477.         s: 'https://imagecurl.com/images/$1$2$3',
  1478.       },
  1479.       {
  1480.         u: '||imagebam.com/image/',
  1481.         q: 'meta[property="og:image"]',
  1482.         tabfix: true,
  1483.         xhr: hostname.includes('planetsuzy'),
  1484.       },
  1485.       {
  1486.         u: '||imageban.ru/thumbs',
  1487.         r: /(.+?\/)thumbs(\/\d+)\.(\d+)\.(\d+\/.*)/,
  1488.         s: '$1out$2/$3/$4',
  1489.       },
  1490.       {
  1491.         u: [
  1492.           '||imageban.ru/show',
  1493.           '||imageban.net/show',
  1494.           '||ibn.im/',
  1495.         ],
  1496.         q: '#img_main',
  1497.       },
  1498.       {
  1499.         u: '||imageshack.us/img',
  1500.         r: /img(\d+)\.(imageshack\.us)\/img\\1\/\d+\/(.+?)\.th(.+)$/,
  1501.         s: 'https://$2/download/$1/$3$4',
  1502.       },
  1503.       {
  1504.         u: '||imageshack.us/i/',
  1505.         q: '#share-dl',
  1506.       },
  1507.       {
  1508.         u: '||imageteam.org/img',
  1509.         q: 'img[alt="image"]',
  1510.       },
  1511.       {
  1512.         u: [
  1513.           '||imagetwist.com/',
  1514.           '||imageshimage.com/',
  1515.         ],
  1516.         r: /(\/\/|^)[^/]+\/[a-z0-9]{8,}/,
  1517.         q: 'img.pic',
  1518.         xhr: true,
  1519.       },
  1520.       {
  1521.         u: '||imageupper.com/i/',
  1522.         q: '#img',
  1523.         xhr: true,
  1524.       },
  1525.       {
  1526.         u: '||imagevenue.com/img.php',
  1527.         q: '#thepic',
  1528.       },
  1529.       {
  1530.         u: '||imagezilla.net/show/',
  1531.         q: '#photo',
  1532.         xhr: true,
  1533.       },
  1534.       {
  1535.         u: [
  1536.           '||images-na.ssl-images-amazon.com/images/',
  1537.           '||media-imdb.com/images/',
  1538.         ],
  1539.         r: /images\/.+?\.jpg/,
  1540.         s: '/V1\\.?_.+?\\.//g',
  1541.       },
  1542.       {
  1543.         u: '||imgbox.com/',
  1544.         r: /\.com\/([a-z0-9]+)$/i,
  1545.         q: '#img',
  1546.         xhr: hostname !== 'imgbox.com',
  1547.       },
  1548.       {
  1549.         u: '||imgclick.net/',
  1550.         r: /\.net\/(\w+)/,
  1551.         q: 'img.pic',
  1552.         xhr: true,
  1553.         post: m => `op=view&id=${m[1]}&pre=1&submit=Continue%20to%20image...`,
  1554.       },
  1555.       {
  1556.         u: [
  1557.           '||imgflip.com/i/',
  1558.           '||imgflip.com/gif/',
  1559.         ],
  1560.         r: /\/(i|gif)\/([^/?#]+)/,
  1561.         s: m => `https://i.imgflip.com/${m[2]}${m[1] === 'i' ? '.jpg' : '.mp4'}`,
  1562.       },
  1563.       {
  1564.         u: [
  1565.           '||imgur.com/a/',
  1566.           '||imgur.com/gallery/',
  1567.           '||imgur.com/t/',
  1568.         ],
  1569.         g: async (text, doc, url, m, rule, cb) => {
  1570.           // simplified extraction of JSON as it occupies only one line
  1571.           if (!/(?:mergeConfig\('gallery',\s*|Imgur\.Album\.getInstance\()[\s\S]*?[,\s{"'](?:image|album)\s*:\s*({[^\r\n]+?}),?[\r\n]/.test(text))
  1572.             return;
  1573.           const info = JSON.parse(RegExp.$1);
  1574.           let images = info.is_album ? info.album_images.images : [info];
  1575.           if (info.num_images > images.length) {
  1576.             const url = `https://imgur.com/ajaxalbums/getimages/${info.hash}/hit.json?all=true`;
  1577.             images = JSON.parse((await Remoting.gmXhr(url)).responseText).data.images;
  1578.           }
  1579.           const items = [];
  1580.           for (const img of images || []) {
  1581.             const u = `https://i.imgur.com/${img.hash}`;
  1582.             items.push({
  1583.               url: img.ext === '.gif' && img.animated !== false ?
  1584.                 [`${u}.webm`, `${u}.mp4`, u] :
  1585.                 u + img.ext,
  1586.               desc: [img.title, img.description].filter(Boolean).join(' - '),
  1587.             });
  1588.           }
  1589.           if (images && info.is_album && !`${items[0].desc || ''}`.includes(info.title))
  1590.             items.title = info.title;
  1591.           cb(items);
  1592.         },
  1593.         css: '.post > .hover { display:none!important; }',
  1594.       },
  1595.       {
  1596.         u: '||imgur.com/',
  1597.         r: /((?:[a-z]{2,}\.)?imgur\.com\/)((?:\w+,)+\w*)/,
  1598.         s: 'gallery',
  1599.         g: (text, doc, url, m) =>
  1600.           m[2].split(',').map(id => ({
  1601.             url: `https://i.${m[1]}${id}.jpg`,
  1602.           })),
  1603.       },
  1604.       {
  1605.         u: '||imgur.com/',
  1606.         r: /([a-z]{2,}\.)?imgur\.com\/(r\/[a-z]+\/|[a-z0-9]+#)?([a-z0-9]{5,})($|\?|\.([a-z]+))/i,
  1607.         s: (m, node) => {
  1608.           if (/memegen|random|register|search|signin/.test(m.input))
  1609.             return '';
  1610.           const a = node.closest('a');
  1611.           if (a && a !== node && /(i\.([a-z]+\.)?)?imgur\.com\/(a\/|gallery\/)?/.test(a.href))
  1612.             return false;
  1613.           const id = m[3].replace(/(.{7})[bhm]$/, '$1');
  1614.           const ext = m[5] ? m[5].replace(/gifv?/, 'webm') : 'jpg';
  1615.           const u = `https://i.${(m[1] || '').replace('www.', '')}imgur.com/${id}.`;
  1616.           return ext === 'webm' ?
  1617.             [`${u}webm`, `${u}mp4`, `${u}gif`] :
  1618.             u + ext;
  1619.         },
  1620.       },
  1621.       {
  1622.         u: [
  1623.           '||instagr.am/p/',
  1624.           '||instagram.com/p/',
  1625.         ],
  1626.         s: m => m.input.substr(0, m.input.lastIndexOf('/')) + '/?__a=1',
  1627.         q: text => {
  1628.           const m = JSON.parse(text).graphql.shortcode_media;
  1629.           return m.video_url || m.display_url;
  1630.         },
  1631.         rect: 'div.PhotoGridMediaItem',
  1632.         c: text => {
  1633.           const m = JSON.parse(text).graphql.shortcode_media.edge_media_to_caption.edges[0];
  1634.           return m === undefined ? '(no caption)' : m.node.text;
  1635.         },
  1636.       },
  1637.       {
  1638.         u: [
  1639.           '||livememe.com/',
  1640.           '||lvme.me/',
  1641.         ],
  1642.         r: /\.\w+\/([^.]+)$/,
  1643.         s: 'http://i.lvme.me/$1.jpg',
  1644.       },
  1645.       {
  1646.         u: '||lostpic.net/image',
  1647.         q: '.image-viewer-image img',
  1648.       },
  1649.       {
  1650.         u: '||makeameme.org/meme/',
  1651.         r: /\/meme\/([^/?#]+)/,
  1652.         s: 'https://media.makeameme.org/created/$1.jpg',
  1653.       },
  1654.       {
  1655.         u: '||photobucket.com/',
  1656.         r: /(\d+\.photobucket\.com\/.+\/)(\?[a-z=&]+=)?(.+\.(jpe?g|png|gif))/,
  1657.         s: 'https://i$1$3',
  1658.         xhr: !dotDomain.endsWith('.photobucket.com'),
  1659.       },
  1660.       {
  1661.         u: '||piccy.info/view3/',
  1662.         r: /(.+?\/view3)\/(.*)\//,
  1663.         s: '$1/$2/orig/',
  1664.         q: '#mainim',
  1665.       },
  1666.       {
  1667.         u: '||pimpandhost.com/image/',
  1668.         r: /(.+?\/image\/[0-9]+)/,
  1669.         s: '$1?size=original',
  1670.         q: 'img.original',
  1671.       },
  1672.       {
  1673.         u: [
  1674.           '||pixroute.com/',
  1675.           '||imgspice.com/',
  1676.         ],
  1677.         r: /\.html$/,
  1678.         q: 'img[id]',
  1679.         xhr: true,
  1680.       },
  1681.       {
  1682.         u: '||postima',
  1683.         r: /postima?ge?\.org\/image\/\w+/,
  1684.         q: [
  1685.           'a[href*="dl="]',
  1686.           '#main-image',
  1687.         ],
  1688.       },
  1689.       {
  1690.         u: [
  1691.           '||prntscr.com/',
  1692.           '||prnt.sc/',
  1693.         ],
  1694.         r: /\.\w+\/.+/,
  1695.         q: 'meta[property="og:image"]',
  1696.         xhr: true,
  1697.       },
  1698.       {
  1699.         u: '||radikal.ru/',
  1700.         r: /\.ru\/(fp|.+\.html)/,
  1701.         q: text => text.match(/http:\/\/[a-z0-9]+\.radikal\.ru[a-z0-9/]+\.(jpg|gif|png)/i)[0],
  1702.       },
  1703.       {
  1704.         u: '||tumblr.com',
  1705.         r: /_500\.jpg/,
  1706.         s: ['/_500/_1280/', ''],
  1707.       },
  1708.       {
  1709.         u: '||twimg.com/',
  1710.         r: /\/profile_images/i,
  1711.         s: '/_(reasonably_small|normal|bigger|\\d+x\\d+)\\././g',
  1712.       },
  1713.       {
  1714.         u: '||twimg.com/media/',
  1715.         r: /.+?format=(jpe?g|png|gif)/i,
  1716.         s: '$0&name=large',
  1717.       },
  1718.       {
  1719.         u: '||twimg.com/1/proxy',
  1720.         r: /t=([^&_]+)/i,
  1721.         s: m => atob(m[1]).match(/http.+/),
  1722.       },
  1723.       {
  1724.         u: '||pic.twitter.com/',
  1725.         r: /\.com\/[a-z0-9]+/i,
  1726.         q: text => text.match(/https?:\/\/twitter\.com\/[^/]+\/status\/\d+\/photo\/\d+/i)[0],
  1727.         follow: true,
  1728.       },
  1729.       {
  1730.         u: '||twitpic.com/',
  1731.         r: /\.com(\/show\/[a-z]+)?\/([a-z0-9]+)($|#)/i,
  1732.         s: 'https://twitpic.com/show/large/$2',
  1733.       },
  1734.       {
  1735.         u: '||upix.me/files',
  1736.         s: '/#//',
  1737.       },
  1738.       {
  1739.         u: '||wiki',
  1740.         r: /\/(thumb|images)\/.+\.(jpe?g|gif|png|svg)\/(revision\/)?/i,
  1741.         s: '/\\/thumb(?=\\/)|' +
  1742.            '\\/scale-to-width(-[a-z]+)?\\/[0-9]+|' +
  1743.            '\\/revision\\/latest|\\/[^\\/]+$//g',
  1744.         xhr: !hostname.includes('wiki'),
  1745.       },
  1746.       {
  1747.         u: '||ytimg.com/vi/',
  1748.         r: /(.+?\/vi\/[^/]+)/,
  1749.         s: '$1/0.jpg',
  1750.         rect: '.video-list-item',
  1751.       },
  1752.       {
  1753.         u: '/viewer.php?file=',
  1754.         r: /(.+?)\/viewer\.php\?file=(.+)/,
  1755.         s: '$1/images/$2',
  1756.         xhr: true,
  1757.       },
  1758.       {
  1759.         u: '/thumb_',
  1760.         r: /\/albums.+\/thumb_[^/]/,
  1761.         s: '/thumb_//',
  1762.       },
  1763.       {
  1764.         u: [
  1765.           '.th.jp',
  1766.           '.th.gif',
  1767.           '.th.png',
  1768.         ],
  1769.         r: /(.+?\.)th\.(jpe?g?|gif|png|svg|webm)$/i,
  1770.         s: '$1$2',
  1771.         follow: true,
  1772.       },
  1773.       {
  1774.         r: /^[^?]+?\.(bmp|jpe?g?|gif|mp4|png|svg|web[mp])($|\?)/i,
  1775.       },
  1776.     ];
  1777.  
  1778.     /** @type mpiv.HostRule[] */
  1779.     Ruler.rules = [].concat(customRules, disablers, perDomain, main).filter(Boolean);
  1780.   },
  1781.  
  1782.   format(rule, {expand} = {}) {
  1783.     const s = JSON.stringify(rule, null, ' ');
  1784.     return expand ?
  1785.       /* {"a": ...,
  1786.           "b": ...,
  1787.           "c": ...
  1788.          } */
  1789.       s.replace(/^{\s+/g, '{') :
  1790.       /* {"a": ..., "b": ..., "c": ...} */
  1791.       s.replace(/\n\s*/g, ' ').replace(/^({)\s|\s+(})$/g, '$1$2');
  1792.   },
  1793.  
  1794.   /** @returns mpiv.HostRule | Error | false | undefined */
  1795.   parse(rule) {
  1796.     const isBatchOp = this instanceof Map;
  1797.     try {
  1798.       if (typeof rule === 'string')
  1799.         rule = JSON.parse(rule);
  1800.       if ('d' in rule && typeof rule.d !== 'string')
  1801.         rule.d = undefined;
  1802.       else if (isBatchOp && rule.d && !hostname.includes(rule.d))
  1803.         return false;
  1804.       const compileTo = isBatchOp ? rule : {};
  1805.       if (rule.r)
  1806.         compileTo.r = new RegExp(rule.r, 'i');
  1807.       if (RX_HAS_CODE.test(rule.s))
  1808.         compileTo.s = Util.newFunction('m', 'node', 'rule', rule.s);
  1809.       if (RX_HAS_CODE.test(rule.q))
  1810.         compileTo.q = Util.newFunction('text', 'doc', 'node', 'rule', rule.q);
  1811.       if (RX_HAS_CODE.test(rule.c))
  1812.         compileTo.c = Util.newFunction('text', 'doc', 'node', 'rule', rule.c);
  1813.       return rule;
  1814.     } catch (e) {
  1815.       if (!e.message.includes('unsafe-eval'))
  1816.         if (isBatchOp) {
  1817.           this.set(rule, e);
  1818.         } else {
  1819.           return e;
  1820.         }
  1821.     }
  1822.   },
  1823.  
  1824.   runC(text, doc = document) {
  1825.     switch (typeof ai.rule.c) {
  1826.       case 'function':
  1827.         // not specifying as a parameter's default value to get the html only when needed
  1828.         if (!text) text = doc.documentElement.outerHTML;
  1829.         ai.caption = ai.rule.c(text, doc, ai.node, ai.rule);
  1830.         break;
  1831.       case 'string': {
  1832.         const el = $many(ai.rule.c, doc);
  1833.         ai.caption = !el ? '' :
  1834.           el.getAttribute('content') ||
  1835.           el.getAttribute('title') ||
  1836.           el.textContent;
  1837.         break;
  1838.       }
  1839.       default:
  1840.         ai.caption = (ai.tooltip || 0).text || ai.node.alt || $propUp(ai.node, 'title') ||
  1841.                      Remoting.getFileName(ai.node.src || $propUp(ai.node, 'href'));
  1842.     }
  1843.   },
  1844.  
  1845.   runQ(text, doc, docUrl) {
  1846.     let url;
  1847.     if (typeof ai.rule.q === 'function') {
  1848.       url = ai.rule.q(text, doc, ai.node, ai.rule);
  1849.       if (Array.isArray(url)) {
  1850.         ai.urls = url.slice(1);
  1851.         url = url[0];
  1852.       }
  1853.     } else {
  1854.       const el = $many(ai.rule.q, doc);
  1855.       url = el && Remoting.findImageUrl(el, docUrl);
  1856.     }
  1857.     return url;
  1858.   },
  1859.  
  1860.   runS(node, rule, m) {
  1861.     let urls = [];
  1862.     for (const s of ensureArray(rule.s))
  1863.       urls.push(
  1864.         typeof s === 'string' ? Util.maybeDecodeUrl(Ruler.substituteSingle(s, m)) :
  1865.           typeof s === 'function' ? s(m, node, rule) :
  1866.             s);
  1867.     if (rule.q && urls.length > 1) {
  1868.       console.warn('Rule discarded: "s" array is not allowed with "q"\n%o', rule);
  1869.       return {skipRule: true};
  1870.     }
  1871.     if (Array.isArray(urls[0]))
  1872.       urls = urls[0];
  1873.     // `false` returned by "s" property means "skip this rule"
  1874.     // any other falsy value (like say "") means "stop all rules"
  1875.     return urls[0] === false ? {skipRule: true} : urls.map(Util.maybeDecodeUrl);
  1876.   },
  1877.  
  1878.   substituteSingle(s, m) {
  1879.     if (!m) return s;
  1880.     if (s.startsWith('/') && !s.startsWith('//')) {
  1881.       const mid = s.search(/[^\\]\//) + 1;
  1882.       const end = s.lastIndexOf('/');
  1883.       const re = new RegExp(s.slice(1, mid), s.slice(end + 1));
  1884.       return m.input.replace(re, s.slice(mid + 1, end));
  1885.     }
  1886.     if (m.length && s.includes('$')) {
  1887.       const maxLength = Math.floor(Math.log10(m.length)) + 1;
  1888.       s = s.replace(/\$(\d{1,3})/g, (text, num) => {
  1889.         for (let i = maxLength; i >= 0; i--) {
  1890.           const part = num.slice(0, i) | 0;
  1891.           if (part < m.length)
  1892.             return (m[part] || '') + num.slice(i);
  1893.         }
  1894.         return text;
  1895.       });
  1896.     }
  1897.     return s;
  1898.   },
  1899. };
  1900.  
  1901. const RuleMatcher = {
  1902.  
  1903.   /** @returns ?mpiv.RuleMatchInfo */
  1904.   findForLink(a) {
  1905.     let url =
  1906.       a.getAttribute('data-expanded-url') ||
  1907.       a.getAttribute('data-full-url') ||
  1908.       a.getAttribute('data-url') ||
  1909.       a.href;
  1910.     if (url.startsWith('data:'))
  1911.       url = false;
  1912.     else if (url.includes('//t.co/'))
  1913.       url = 'http://' + a.textContent;
  1914.     return RuleMatcher.find(url, a);
  1915.   },
  1916.  
  1917.   /** @returns ?mpiv.RuleMatchInfo */
  1918.   find(url, node, {noHtml, skipRules} = {}) {
  1919.     const tn = node.tagName;
  1920.     const isPic = tn === 'IMG' || tn === 'VIDEO';
  1921.     const isPicOrLink = isPic || tn === 'A';
  1922.     let m, html, urls;
  1923.     for (const rule of Ruler.rules) {
  1924.       const {e} = rule;
  1925.       if (e && !node.matches(e) || skipRules && skipRules.includes(rule))
  1926.         continue;
  1927.       const {r, u} = rule;
  1928.       if (r && !noHtml && rule.html && (isPicOrLink || e))
  1929.         m = r.exec(html || (html = node.outerHTML));
  1930.       else if (r || u)
  1931.         m = url && RuleMatcher.makeUrlMatch(url, node, rule, r, u);
  1932.       else
  1933.         m = url ? RuleMatcher.makeDummyMatch(url) : [];
  1934.       if (!m)
  1935.         continue;
  1936.       const {s} = rule;
  1937.       let hasS = s !== undefined;
  1938.       // a rule with follow:true for the currently hovered IMG produced a URL,
  1939.       // but we'll only allow it to match rules without 's' in the nested find call
  1940.       if (isPic && !hasS && !skipRules)
  1941.         continue;
  1942.       if (s === '')
  1943.         return {};
  1944.       hasS &= s !== 'gallery';
  1945.       urls = hasS ? Ruler.runS(node, rule, m) : [m.input];
  1946.       if (!urls.skipRule) {
  1947.         const url = urls[0];
  1948.         return !url ? {} :
  1949.           hasS && !rule.q && RuleMatcher.isFollowableUrl(url, rule) &&
  1950.             RuleMatcher.find(url, node, {skipRules: [...skipRules || [], rule]}) ||
  1951.             RuleMatcher.makeInfo(urls, node, rule, m);
  1952.       }
  1953.     }
  1954.   },
  1955.  
  1956.   makeUrlMatch(url, node, rule, r, u) {
  1957.     let m;
  1958.     if (u) {
  1959.       u = rule._u || (rule._u = UrlMatcher(u));
  1960.       m = u.fn.call(u.this, url) && (r || RuleMatcher.makeDummyMatch(url));
  1961.     }
  1962.     return (m || !u) && r ? r.exec(url) : m;
  1963.   },
  1964.  
  1965.   makeDummyMatch(url) {
  1966.     const m = [url];
  1967.     m.index = 0;
  1968.     m.input = url;
  1969.     return m;
  1970.   },
  1971.  
  1972.   /** @returns mpiv.RuleMatchInfo */
  1973.   makeInfo(urls, node, rule, m) {
  1974.     const url = urls[0];
  1975.     const xhr = cfg.xhr && rule.xhr;
  1976.     const info = {
  1977.       node,
  1978.       rule,
  1979.       url,
  1980.       urls: urls.length > 1 ? urls.slice(1) : null,
  1981.       match: m,
  1982.       gallery: rule.g && Gallery.makeParser(rule.g),
  1983.       post: typeof rule.post === 'function' ? rule.post(m) : rule.post,
  1984.       xhr: xhr != null ? xhr : isSecureContext && !`${url}`.startsWith(location.protocol),
  1985.     };
  1986.     if (
  1987.       dotDomain.endsWith('.twitter.com') && !/(facebook|google|twimg|twitter)\.com\//.test(url) ||
  1988.       dotDomain.endsWith('.github.com') && !/github/.test(url) ||
  1989.       dotDomain.endsWith('.facebook.com') && /\bimgur\.com/.test(url)
  1990.     ) {
  1991.       info.xhr = 'data';
  1992.     }
  1993.     return info;
  1994.   },
  1995.  
  1996.   isFollowableUrl(url, rule) {
  1997.     const f = rule.follow;
  1998.     return typeof f === 'function' ? f(url) : f;
  1999.   },
  2000. };
  2001.  
  2002. const Remoting = {
  2003.  
  2004.   gmXhr(url, opts = {}) {
  2005.     if (ai.req)
  2006.       tryCatch.call(ai.req, ai.req.abort);
  2007.     return new Promise((resolve, reject) => {
  2008.       ai.req = GM_xmlhttpRequest({
  2009.         url,
  2010.         method: 'GET',
  2011.         anonymous: (ai.rule || {}).anonymous,
  2012.         timeout: 30e3,
  2013.         ...opts,
  2014.         onload: done,
  2015.         onerror: done,
  2016.         ontimeout() {
  2017.           ai.req = null;
  2018.           reject(`Timeout fetching ${url}`);
  2019.         },
  2020.       });
  2021.       function done(r) {
  2022.         ai.req = null;
  2023.         if (r.status < 400 && !r.error)
  2024.           resolve(r);
  2025.         else
  2026.           reject(`Server error ${r.status} ${r.error}\nURL: ${url}`);
  2027.       }
  2028.     });
  2029.   },
  2030.  
  2031.   async getDoc(url) {
  2032.     const r = await (!ai.post ?
  2033.       Remoting.gmXhr(url) :
  2034.       Remoting.gmXhr(url, {
  2035.         method: 'POST',
  2036.         data: ai.post,
  2037.         headers: {
  2038.           'Content-Type': 'application/x-www-form-urlencoded',
  2039.           'Referer': url,
  2040.         },
  2041.       }));
  2042.     r.doc = new DOMParser().parseFromString(r.responseText, 'text/html');
  2043.     return r;
  2044.   },
  2045.  
  2046.   async getImage(url, pageUrl) {
  2047.     ai.bufBar = false;
  2048.     ai.bufStart = now();
  2049.     const response = await Remoting.gmXhr(url, {
  2050.       responseType: 'blob',
  2051.       headers: {
  2052.         Accept: 'image/png,image/*;q=0.8,*/*;q=0.5',
  2053.         Referer: pageUrl || (typeof ai.xhr === 'function' ? ai.xhr() : url),
  2054.       },
  2055.       onprogress: Remoting.getImageProgress,
  2056.     });
  2057.     Bar.set(false);
  2058.     const type = Remoting.guessMimeType(response);
  2059.     let b = response.response;
  2060.     if (!b) throw 'Empty response';
  2061.     if (b.type !== type)
  2062.       b = b.slice(0, b.size, type);
  2063.     return ai.xhr === 'data' ?
  2064.       Remoting.blobToDataUrl(b) :
  2065.       URL.createObjectURL(b);
  2066.   },
  2067.  
  2068.   getImageProgress(e) {
  2069.     if (!ai.bufBar && now() - ai.bufStart > 3000 && e.loaded / e.total < 0.5)
  2070.       ai.bufBar = true;
  2071.     if (ai.bufBar) {
  2072.       const pct = e.loaded / e.total * 100 | 0;
  2073.       const size = e.total / 1024 | 0;
  2074.       Bar.set(`${pct}% of ${size} kiB`, 'xhr');
  2075.     }
  2076.   },
  2077.  
  2078.   async findRedirect() {
  2079.     try {
  2080.       const {finalUrl} = await Remoting.gmXhr(ai.url, {
  2081.         method: 'HEAD',
  2082.         headers: {
  2083.           'Referer': location.href.split('#', 1)[0],
  2084.         },
  2085.       });
  2086.       const info = RuleMatcher.find(finalUrl, ai.node, {noHtml: true});
  2087.       if (!info || !info.url)
  2088.         throw `Couldn't follow redirection target: ${finalUrl}`;
  2089.       Object.assign(ai, info);
  2090.       App.startSingle();
  2091.     } catch (e) {
  2092.       App.handleError(e);
  2093.     }
  2094.   },
  2095.  
  2096.   async saveFile() {
  2097.     const url = ai.popup.src || ai.popup.currentSrc;
  2098.     let name = Remoting.getFileName(ai.imageUrl || url);
  2099.     if (!name.includes('.'))
  2100.       name += '.jpg';
  2101.     if (url.startsWith('blob:') || url.startsWith('data:')) {
  2102.       $create('a', {href: url, download: name})
  2103.         .dispatchEvent(new MouseEvent('click'));
  2104.     } else {
  2105.       Status.set('+loading');
  2106.       GM_download({
  2107.         url,
  2108.         name,
  2109.         headers: {Referer: url},
  2110.         onerror: () => Bar.set(`Could not download ${name}.`, 'error'),
  2111.         onload: () => Status.set('-loading'),
  2112.         onprogress: Remoting.getImageProgress,
  2113.       });
  2114.     }
  2115.   },
  2116.  
  2117.   getFileName(url) {
  2118.     return decodeURIComponent(url).split('/').pop().replace(/[:#?].*/, '');
  2119.   },
  2120.  
  2121.   blobToDataUrl(blob) {
  2122.     return new Promise((resolve, reject) => {
  2123.       const fr = new FileReader();
  2124.       fr.onload = () => resolve(fr.result);
  2125.       fr.onerror = reject;
  2126.       fr.readAsDataURL(blob);
  2127.     });
  2128.   },
  2129.  
  2130.   guessMimeType({responseHeaders, finalUrl}) {
  2131.     if (/Content-Type:\s*(\S+)/i.test(responseHeaders) &&
  2132.         !RegExp.$1.includes('text/plain'))
  2133.       return RegExp.$1;
  2134.     const ext = /\.([a-z0-9]+?)($|\?|#)/i.exec(finalUrl) ? RegExp.$1 : 'jpg';
  2135.     switch (ext.toLowerCase()) {
  2136.       case 'bmp': return 'image/bmp';
  2137.       case 'gif': return 'image/gif';
  2138.       case 'jpe': return 'image/jpeg';
  2139.       case 'jpeg': return 'image/jpeg';
  2140.       case 'jpg': return 'image/jpeg';
  2141.       case 'mp4': return 'video/mp4';
  2142.       case 'png': return 'image/png';
  2143.       case 'svg': return 'image/svg+xml';
  2144.       case 'tif': return 'image/tiff';
  2145.       case 'tiff': return 'image/tiff';
  2146.       case 'webm': return 'video/webm';
  2147.       default: return 'application/octet-stream';
  2148.     }
  2149.   },
  2150.  
  2151.   findImageUrl(n, url) {
  2152.     let html;
  2153.     const path =
  2154.       n.getAttribute('src') ||
  2155.       n.getAttribute('data-m4v') ||
  2156.       n.getAttribute('href') ||
  2157.       n.getAttribute('content') ||
  2158.       (html = n.outerHTML).includes('http') &&
  2159.       html.match(/https?:\/\/[^\s"<>]+?\.(jpe?g|gif|png|svg|web[mp]|mp4)[^\s"<>]*|$/i)[0];
  2160.     return !!path && Util.rel2abs(Util.decodeHtmlEntities(path),
  2161.       $prop('base[href]', 'href', n.ownerDocument) || url);
  2162.   },
  2163. };
  2164.  
  2165. const Status = {
  2166.  
  2167.   set(status) {
  2168.     if (!status && !cfg.globalStatus) {
  2169.       ai.node && ai.node.removeAttribute(STATUS_ATTR);
  2170.       return;
  2171.     }
  2172.     const prefix = cfg.globalStatus ? PREFIX : '';
  2173.     const action = status && /^[+-]/.test(status) && status[0];
  2174.     const name = status && `${prefix}${action ? status.slice(1) : status}`;
  2175.     const el = cfg.globalStatus ? doc.documentElement :
  2176.       name === 'edge' ? ai.popup :
  2177.         ai.node;
  2178.     if (!el) return;
  2179.     const attr = cfg.globalStatus ? 'class' : STATUS_ATTR;
  2180.     const oldValue = (el.getAttribute(attr) || '').trim();
  2181.     const cls = new Set(oldValue ? oldValue.split(/\s+/) : []);
  2182.     switch (action) {
  2183.       case '-':
  2184.         cls.delete(name);
  2185.         break;
  2186.       case false:
  2187.         for (const c of cls)
  2188.           if (c.startsWith(prefix) && c !== name)
  2189.             cls.delete(c);
  2190.       // fallthrough to +
  2191.       case '+':
  2192.         if (name)
  2193.           cls.add(name);
  2194.         break;
  2195.     }
  2196.     const newValue = [...cls].join(' ');
  2197.     if (newValue !== oldValue)
  2198.       el.setAttribute(attr, newValue);
  2199.   },
  2200.  
  2201.   loading(force) {
  2202.     if (!force) {
  2203.       clearTimeout(ai.timerStatus);
  2204.       ai.timerStatus = setTimeout(Status.loading, SETTLE_TIME, true);
  2205.     } else if (!ai.popupLoaded) {
  2206.       Status.set('+loading');
  2207.     }
  2208.   },
  2209. };
  2210.  
  2211. const UrlMatcher = (() => {
  2212.   // string-to-regexp escaped chars
  2213.   const RX_ESCAPE = /[.+*?(){}[\]^$|]/g;
  2214.   // rx for '^' symbol in simple url match
  2215.   const RX_SEP = /[^\w%._-]/g;
  2216.   const RXS_SEP = RX_SEP.source;
  2217.   return match => {
  2218.     const results = [];
  2219.     for (const s of ensureArray(match)) {
  2220.       const pinDomain = s.startsWith('||');
  2221.       const pinStart = !pinDomain && s.startsWith('|');
  2222.       const endSep = s.endsWith('^');
  2223.       let fn;
  2224.       let needle = s.slice(pinDomain * 2 + pinStart, -endSep || undefined);
  2225.       if (needle.includes('^')) {
  2226.         const plain = findLongestPart(needle);
  2227.         const rx = new RegExp(
  2228.           (pinStart ? '^' : '') +
  2229.           (pinDomain ? '^(([^/:]+:)?//)?([^./]*\\.)*?' : '') +
  2230.           needle.replace(RX_ESCAPE, '\\$&').replace(/\\\^/g, RXS_SEP) +
  2231.           (endSep ? `(?:${RXS_SEP}|$)` : ''), 'i');
  2232.         needle = [plain, rx];
  2233.         fn = regexp;
  2234.       } else if (pinStart) {
  2235.         fn = endSep ? equals : starts;
  2236.       } else if (pinDomain) {
  2237.         const slashPos = needle.indexOf('/');
  2238.         const domain = slashPos > 0 ? needle.slice(0, slashPos) : needle;
  2239.         needle = [needle, domain, slashPos > 0, endSep];
  2240.         fn = startsDomainPrescreen;
  2241.       } else if (endSep) {
  2242.         fn = ends;
  2243.       } else {
  2244.         fn = has;
  2245.       }
  2246.       results.push({fn, this: needle});
  2247.     }
  2248.     return results.length > 1 ?
  2249.       {fn: checkArray, this: results} :
  2250.       results[0];
  2251.   };
  2252.   function checkArray(s) {
  2253.     return this.some(checkArrayItem, s);
  2254.   }
  2255.   function checkArrayItem(item) {
  2256.     return item.fn.call(item.this, this);
  2257.   }
  2258.   function equals(s) {
  2259.     return s.startsWith(this) && (
  2260.       s.length === this.length ||
  2261.       s.length === this.length + 1 && endsWithSep(s));
  2262.   }
  2263.   function starts(s) {
  2264.     return s.startsWith(this);
  2265.   }
  2266.   function ends(s) {
  2267.     return s.endsWith(this) || (
  2268.       s.length > this.length &&
  2269.       s.indexOf(this, s.length - this.length - 1) >= 0 &&
  2270.       endsWithSep(s));
  2271.   }
  2272.   function has(s) {
  2273.     return s.includes(this);
  2274.   }
  2275.   function regexp(s) {
  2276.     return s.includes(this[0]) && this[1].test(s);
  2277.   }
  2278.   function endsWithSep(s) {
  2279.     RX_SEP.lastIndex = s.length - 1;
  2280.     return RX_SEP.test(s);
  2281.   }
  2282.   function startsDomainPrescreen(url) {
  2283.     return url.includes(this[0]) && startsDomain.call(this, url);
  2284.   }
  2285.   function startsDomain(url) {
  2286.     const [p, gap, host] = url.split('/', 3);
  2287.     if (gap || p && !p.endsWith(':'))
  2288.       return;
  2289.     const [needle, domain, pinDomainEnd, endSep] = this;
  2290.     let start = pinDomainEnd ? host.length - domain.length : 0;
  2291.     for (; ; start++) {
  2292.       start = host.indexOf(domain, start);
  2293.       if (start < 0)
  2294.         return;
  2295.       if (!start || host[start - 1] === '.')
  2296.         break;
  2297.     }
  2298.     start += p.length + 2;
  2299.     return url.lastIndexOf(needle, start) === start &&
  2300.            (!endSep || start + needle.length === url.length);
  2301.   }
  2302.   function findLongestPart(s) {
  2303.     const len = s.length;
  2304.     let maxLen = 0;
  2305.     let start;
  2306.     for (let i = 0, j; i < len; i = j + 1) {
  2307.       j = s.indexOf('^', i);
  2308.       if (j < 0)
  2309.         j = len;
  2310.       if (j - i > maxLen) {
  2311.         maxLen = j - i;
  2312.         start = i;
  2313.       }
  2314.     }
  2315.     return maxLen < len ? s.substr(start, maxLen) : s;
  2316.   }
  2317. })();
  2318.  
  2319. const Util = {
  2320.  
  2321.   addStyle(name, css) {
  2322.     const id = `${PREFIX}style:${name}`;
  2323.     const el = doc.getElementById(id) ||
  2324.                css && $create('style', {id});
  2325.     if (!el) return;
  2326.     if (el.textContent !== css)
  2327.       el.textContent = css;
  2328.     if (el.parentElement !== doc.head)
  2329.       doc.head.appendChild(el);
  2330.     return el;
  2331.   },
  2332.  
  2333.   decodeHtmlEntities(s) {
  2334.     return s
  2335.       .replace(/&quot;/g, '"')
  2336.       .replace(/&apos;/g, '\'')
  2337.       .replace(/&lt;/g, '<')
  2338.       .replace(/&gt;/g, '>')
  2339.       .replace(/&amp;/g, '&');
  2340.   },
  2341.  
  2342.   color(color, opacity = cfg[`ui${color}Opacity`]) {
  2343.     return (color.startsWith('#') ? color : cfg[`ui${color}Color`]) +
  2344.            (0x100 + Math.round(opacity / 100 * 255)).toString(16).slice(1);
  2345.   },
  2346.  
  2347.   deepEqual(a, b) {
  2348.     if (!a || !b || typeof a !== 'object' || typeof a !== typeof b)
  2349.       return a === b;
  2350.     if (Array.isArray(a)) {
  2351.       return Array.isArray(b) &&
  2352.         a.length === b.length &&
  2353.         a.every((v, i) => Util.deepEqual(v, b[i]));
  2354.     }
  2355.     const keys = Object.keys(a);
  2356.     return keys.length === Object.keys(b).length &&
  2357.       keys.every(k => Util.deepEqual(a[k], b[k]));
  2358.   },
  2359.  
  2360.   forceLayout(node) {
  2361.     // eslint-disable-next-line no-unused-expressions
  2362.     node.clientHeight;
  2363.   },
  2364.  
  2365.   formatError(e, rule) {
  2366.     const message =
  2367.       e.message ||
  2368.       e.readyState && 'Request failed.' ||
  2369.       e.type === 'error' && `File can't be displayed.${
  2370.         $('div[bgactive*="flashblock"]', doc) ? ' Check Flashblock settings.' : ''
  2371.       }` ||
  2372.       e;
  2373.     const m = [
  2374.       [`${GM_info.script.name}: %c${message}%c`, 'font-weight:bold;color:yellow'],
  2375.       ['', 'font-weight:normal;color:unset'],
  2376.     ];
  2377.     m.push(...[
  2378.       ['Node: %o', ai.node],
  2379.       ['Rule: %o', rule],
  2380.       ai.url && ['URL: %s', ai.url],
  2381.       ai.imageUrl && ai.imageUrl !== ai.url && ['File: %s', ai.imageUrl],
  2382.     ].filter(Boolean));
  2383.     return {
  2384.       message,
  2385.       consoleFormat: m.map(([k]) => k).filter(Boolean).join('\n'),
  2386.       consoleArgs: m.map(([, v]) => v),
  2387.     };
  2388.   },
  2389.  
  2390.   isVideoUrl(url) {
  2391.     return url.startsWith('data:video') ||
  2392.            !url.startsWith('data:') && /\.(webm|mp4)($|\?)/.test(url);
  2393.   },
  2394.  
  2395.   // decode only if the main part of the URL is encoded to preserve the encoded parameters
  2396.   maybeDecodeUrl(url) {
  2397.     if (!url) return url;
  2398.     const iPct = url.indexOf('%');
  2399.     const iColon = url.indexOf(':');
  2400.     return iPct >= 0 && (iPct < iColon || iColon < 0) ?
  2401.       decodeURIComponent(url) :
  2402.       url;
  2403.   },
  2404.  
  2405.   newFunction(...args) {
  2406.     try {
  2407.       return App.NOP || new Function(...args);
  2408.     } catch (e) {
  2409.       if (!e.message.includes('unsafe-eval'))
  2410.         throw e;
  2411.       App.NOP = () => {};
  2412.       return App.NOP;
  2413.     }
  2414.   },
  2415.  
  2416.   rel2abs(rel, abs = location.href) {
  2417.     try {
  2418.       return rel.startsWith('data:') ? rel :
  2419.         rel.startsWith('blob:') ? '' : // blobs don't work because they're usually revoked
  2420.           new URL(rel, abs).href;
  2421.     } catch (e) {
  2422.       return rel;
  2423.     }
  2424.   },
  2425.  
  2426.   suppressTooltip() {
  2427.     for (const node of [
  2428.       ai.node.parentNode,
  2429.       ai.node,
  2430.       ai.node.firstElementChild,
  2431.     ]) {
  2432.       const t = (node || 0).title;
  2433.       if (t && t !== node.textContent && !doc.title.includes(t) && !/^https?:\S+$/.test(t)) {
  2434.         ai.tooltip = {node, text: t};
  2435.         node.title = '';
  2436.         break;
  2437.       }
  2438.     }
  2439.   },
  2440.  
  2441.   tabFixUrl() {
  2442.     return ai.rule.tabfix && ai.popup.tagName === 'IMG' && !ai.xhr &&
  2443.            navigator.userAgent.includes('Gecko/') &&
  2444.            flattenHtml(`data:text/html;charset=utf8,
  2445.       <style>
  2446.         body {
  2447.           margin: 0;
  2448.           padding: 0;
  2449.           background: #222;
  2450.         }
  2451.         .fit {
  2452.           overflow: hidden
  2453.         }
  2454.         .fit > img {
  2455.           max-width: 100vw;
  2456.           max-height: 100vh;
  2457.         }
  2458.         body > img {
  2459.           margin: auto;
  2460.           position: absolute;
  2461.           left: 0;
  2462.           right: 0;
  2463.           top: 0;
  2464.           bottom: 0;
  2465.         }
  2466.       </style>
  2467.       <body class=fit>
  2468.         <img onclick="document.body.classList.toggle('fit')" src="${ai.popup.src}">
  2469.       </body>
  2470.     `).replace(/#/g, '%23');
  2471.   },
  2472. };
  2473.  
  2474. function setup({rule} = {}) {
  2475.   if (window !== top) return;
  2476.   const RULE = setup.RULE || (setup.RULE = Symbol('rule'));
  2477.   // FF is superslow with textareas, bugzil.la/190147
  2478.   let root = (elConfig || 0).shadowRoot;
  2479.   let {blankRuleElement} = setup;
  2480.   /** @type NodeList */
  2481.   const UI = new Proxy({}, {
  2482.     get(_, id) {
  2483.       return root.getElementById(id);
  2484.     },
  2485.   });
  2486.   if (!rule || !elConfig)
  2487.     init(new Config({save: true}));
  2488.   if (rule)
  2489.     installRule(rule);
  2490.  
  2491.   function closeSetup(event) {
  2492.     const isApply = this.id === 'apply';
  2493.     if (event && (this.id === 'ok' || isApply)) {
  2494.       cfg = collectConfig({save: true, clone: isApply});
  2495.       Ruler.init();
  2496.       if (isApply) {
  2497.         renderCustomScales(cfg);
  2498.         return;
  2499.       }
  2500.     }
  2501.     $remove(elConfig);
  2502.     elConfig = null;
  2503.   }
  2504.  
  2505.   function collectConfig({save, clone} = {}) {
  2506.     let data = {};
  2507.     for (const el of $$('input[id], select[id]', root))
  2508.       data[el.id] = el.type === 'checkbox' ? el.checked :
  2509.         (el.type === 'number' || el.type === 'range') ? el.valueAsNumber :
  2510.           el.value || '';
  2511.     Object.assign(data, {
  2512.       css: UI.css.value.trim(),
  2513.       delay: UI.delay.valueAsNumber * 1000,
  2514.       hosts: collectRules(),
  2515.       scale: Math.max(1, UI.scale.valueAsNumber || 0),
  2516.       scales: UI.scales.value
  2517.         .trim()
  2518.         .split(/[,;]*\s+/)
  2519.         .map(x => x.replace(',', '.'))
  2520.         .filter(x => !isNaN(parseFloat(x))),
  2521.     });
  2522.     if (clone)
  2523.       data = JSON.parse(JSON.stringify(data));
  2524.     return new Config({data, save});
  2525.   }
  2526.  
  2527.   function collectRules() {
  2528.     return [...UI.rules.children]
  2529.       .map(el => [el.value.trim(), el[RULE]])
  2530.       .sort((a, b) => a[0] < b[0] ? -1 : a[0] > b[0] ? 1 : 0)
  2531.       .map(([s, json]) => json || s)
  2532.       .filter(Boolean);
  2533.   }
  2534.  
  2535.   function exportSettings(e) {
  2536.     dropEvent(e);
  2537.     const txt = $create('textarea', {
  2538.       style: 'opacity:0; position:absolute',
  2539.       value: JSON.stringify(collectConfig(), null, '  '),
  2540.     });
  2541.     root.appendChild(txt);
  2542.     txt.select();
  2543.     txt.focus();
  2544.     document.execCommand('copy');
  2545.     e.target.focus();
  2546.     txt.remove();
  2547.     UI.exportNotification.hidden = false;
  2548.     setTimeout(() => (UI.exportNotification.hidden = true), 1000);
  2549.   }
  2550.  
  2551.   function importSettings(e) {
  2552.     dropEvent(e);
  2553.     const s = prompt('Paste settings:');
  2554.     if (s)
  2555.       init(new Config({data: s}));
  2556.   }
  2557.  
  2558.   function checkRule({target: el}) {
  2559.     let json, error;
  2560.     const prev = el.previousElementSibling;
  2561.     if (el.value) {
  2562.       json = Ruler.parse(el.value);
  2563.       error = json instanceof Error && (json.message || String(json));
  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 = error || '';
  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.value = config.delay / 1000;
  2752.   }
  2753. }
  2754.  
  2755. async function setupRuleInstaller(e) {
  2756.   dropEvent(e);
  2757.   const parent = this.parentElement;
  2758.   parent.children.installLoading.hidden = false;
  2759.   this.remove();
  2760.   let rules;
  2761.  
  2762.   try {
  2763.     rules = extractRules(await Remoting.getDoc(this.href));
  2764.     const selector = $create('select', {
  2765.       size: 8,
  2766.       style: 'width: 100%',
  2767.       ondblclick: e => e.target !== selector && maybeSetup(e),
  2768.       onkeyup: e => e.key === 'Enter' && maybeSetup(e),
  2769.     });
  2770.     selector.append(...rules.map(renderRule));
  2771.     selector.selectedIndex = findMatchingRuleIndex();
  2772.     // remove "name" since the installed rules don't need it
  2773.     for (const r of rules)
  2774.       delete r.name;
  2775.     parent.children.installLoading.remove();
  2776.     parent.children.installHint.hidden = false;
  2777.     parent.appendChild(selector);
  2778.     requestAnimationFrame(() => {
  2779.       const optY = selector.selectedOptions[0].offsetTop - selector.offsetTop;
  2780.       selector.scrollTo(0, optY - selector.offsetHeight / 2);
  2781.     });
  2782.   } catch (e) {
  2783.     parent.textContent = 'Error loading rules: ' + (e.message || e);
  2784.   }
  2785.  
  2786.   function extractRules({doc}) {
  2787.     const code = $('script', doc).textContent;
  2788.     // sort by name
  2789.     return JSON.parse(code.match(/var\s+rules\s*=\s*(\[.+]);?[\r\n]/)[1])
  2790.       .filter(r => !r.d || hostname.includes(r.d))
  2791.       .sort((a, b) =>
  2792.         (a = a.name.toLowerCase()) < (b = b.name.toLowerCase()) ? -1 :
  2793.           a > b ? 1 :
  2794.             0);
  2795.   }
  2796.  
  2797.   function findMatchingRuleIndex() {
  2798.     const dottedHost = `.${hostname}.`;
  2799.     const weighParts = (n, part) => n + (dottedHost.includes(`.${part}.`) && part.length);
  2800.     const weighName = name => name.toLowerCase().split(/[^a-z\d.-]+/i).reduce(weighParts, 0);
  2801.     return rules.reduce((max, {d, name}, index) => {
  2802.       const count = !!(d && hostname.includes(d)) * 10 + weighName(name);
  2803.       return count > max.count ? {count, index} : max;
  2804.     }, {count: 0, index: 0}).index;
  2805.   }
  2806.  
  2807.   function renderRule(r) {
  2808.     const {name, ...copy} = r;
  2809.     return $create('option', {
  2810.       textContent: name,
  2811.       title: Ruler.format(copy, {expand: true})
  2812.         .replace(/^{|\s*}$/g, '')
  2813.         .split('\n')
  2814.         .slice(0, 12)
  2815.         .map(renderTitleLine)
  2816.         .filter(Boolean)
  2817.         .join('\n'),
  2818.     });
  2819.   }
  2820.  
  2821.   function renderTitleLine(line, i, arr) {
  2822.     return (
  2823.       // show ... on 10th line if there are more lines
  2824.       i === 9 && arr.length > 10 ? '...' :
  2825.         i > 10 ? '' :
  2826.           // truncate to 100 chars
  2827.           (line.length > 100 ? line.slice(0, 100) + '...' : line)
  2828.             // strip the leading space
  2829.             .replace(/^\s/, ''));
  2830.   }
  2831.  
  2832.   function maybeSetup(e) {
  2833.     if (!modKeyPressed(e))
  2834.       setup({rule: rules[e.currentTarget.selectedIndex]});
  2835.   }
  2836. }
  2837.  
  2838. function createConfigHtml() {
  2839.   const MPIV_BASE_URL = 'https://w9p.co/userscripts/mpiv/';
  2840.   const scalesHint = 'Leave it empty and click Apply or Save to restore the default values.';
  2841.   const trimLeft = s => s.trim().replace(/\n\s+/g, '\r');
  2842.   return flattenHtml(`
  2843. <style>
  2844.   :host {
  2845.     all: initial !important;
  2846.     position: fixed !important;
  2847.     z-index: 2147483647 !important;
  2848.     top: 20px !important;
  2849.     right: 20px !important;
  2850.     padding: 1.5em !important;
  2851.     color: #000 !important;
  2852.     background: #eee !important;
  2853.     box-shadow: 5px 5px 25px 2px #000 !important;
  2854.     width: 32em !important;
  2855.     border: 1px solid black !important;
  2856.     display: flex !important;
  2857.     flex-direction: column !important;
  2858.   }
  2859.   main {
  2860.     font: 12px/15px sans-serif;
  2861.   }
  2862.   ul {
  2863.     max-height: calc(100vh - 200px);
  2864.     margin: 10px 0 15px 0;
  2865.     padding: 0;
  2866.     list-style: none;
  2867.   }
  2868.   li {
  2869.     margin: 0;
  2870.     padding: .25em 0;
  2871.   }
  2872.   li.options {
  2873.     display: flex;
  2874.     align-items: center;
  2875.     justify-content: space-between;
  2876.   }
  2877.   li.row {
  2878.     flex-wrap: wrap;
  2879.     justify-content: flex-start;
  2880.   }
  2881.   li.row label {
  2882.     flex-direction: row;
  2883.     align-items: center;
  2884.   }
  2885.   li.row input {
  2886.     margin-right: .25em;
  2887.   }
  2888.   li.stretch label {
  2889.     flex: 1;
  2890.     white-space: nowrap;
  2891.   }
  2892.   li.stretch label > span {
  2893.     display: flex;
  2894.     flex-direction: row;
  2895.     flex: 1;
  2896.   }
  2897.   label {
  2898.     display: inline-flex;
  2899.     flex-direction: column;
  2900.   }
  2901.   label:not(:last-child) {
  2902.     margin-right: 1em;
  2903.   }
  2904.   input, select {
  2905.     min-height: 1.6em;
  2906.     box-sizing: border-box;
  2907.   }
  2908.   input[type=checkbox] {
  2909.     margin-left: 0;
  2910.   }
  2911.   input[type=number] {
  2912.     width: 4em;
  2913.   }
  2914.   input:not([type=checkbox])  {
  2915.     padding: 0 .25em;
  2916.   }
  2917.   input[type=range] {
  2918.     flex: 1;
  2919.     width: 100%;
  2920.     margin: 0 .25em;
  2921.     padding: 0;
  2922.     filter: saturate(0);
  2923.     opacity: .5;
  2924.   }
  2925.   u + input[type=range] {
  2926.     max-width: 3em;
  2927.   }
  2928.   input[type=range]:hover {
  2929.     filter: none;
  2930.     opacity: 1;
  2931.   }
  2932.   input[type=color] {
  2933.     position: absolute;
  2934.     width: calc(1.5em + 2px);
  2935.     opacity: 0;
  2936.     cursor: pointer;
  2937.   }
  2938.   u {
  2939.     display: inline-block;
  2940.     position: relative;
  2941.     width: 1.5em;
  2942.     height: 1.5em;
  2943.     border: 1px solid #888;
  2944.     pointer-events: none;
  2945.     color: #888;
  2946.     background-image:
  2947.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%),
  2948.       linear-gradient(45deg, currentColor 25%, transparent 25%, transparent 75%, currentColor 75%);
  2949.     background-size: .5em .5em;
  2950.     background-position: 0 0, .25em .25em;
  2951.   }
  2952.   u::after {
  2953.     position: absolute;
  2954.     top: 0;
  2955.     left: 0;
  2956.     right: 0;
  2957.     bottom: 0;
  2958.     content: "";
  2959.     background-color: var(--color);
  2960.   }
  2961.   .range-edit {
  2962.     position: absolute;
  2963.     box-shadow: 0 0.25em 1em #000;
  2964.     z-index: 99;
  2965.   }
  2966.   #rules input,
  2967.   textarea {
  2968.     flex: 1;
  2969.     resize: vertical;
  2970.     margin: 1px 0;
  2971.     font: 11px/1.25 Consolas, monospace;
  2972.   }
  2973.   :invalid {
  2974.     background-color: #f002;
  2975.     border-color: #800;
  2976.   }
  2977.   code {
  2978.     font-weight: bold;
  2979.   }
  2980.   a {
  2981.     text-decoration: none;
  2982.   }
  2983.   a:hover {
  2984.     text-decoration: underline;
  2985.   }
  2986.   button {
  2987.     padding: .2em 1em;
  2988.     margin: 0 1em;
  2989.   }
  2990.   .column {
  2991.     display: flex;
  2992.     flex-direction: column;
  2993.   }
  2994.   .highlight {
  2995.     animation: 2s fade-in cubic-bezier(0, .75, .25, 1);
  2996.     animation-fill-mode: both;
  2997.   }
  2998.   #rules input,
  2999.   #rules textarea {
  3000.     word-break: break-all;
  3001.   }
  3002.   #x {
  3003.     position: absolute;
  3004.     top: 0;
  3005.     right: 0;
  3006.     padding: 4px 8px;
  3007.     cursor: pointer;
  3008.     user-select: none;
  3009.   }
  3010.   #x:hover {
  3011.     background-color: #8884;
  3012.   }
  3013.   #cssApp {
  3014.     color: seagreen;
  3015.   }
  3016.   #exportNotification {
  3017.     color: green;
  3018.     font-weight: bold;
  3019.     position: absolute;
  3020.     left: 0;
  3021.     right: 0;
  3022.     bottom: 2px;
  3023.   }
  3024.   #installHint {
  3025.     color: green;
  3026.   }
  3027.   @keyframes fade-in {
  3028.     from { background-color: deepskyblue }
  3029.     to {}
  3030.   }
  3031.   @media (prefers-color-scheme: dark) {
  3032.     :host {
  3033.       color: #aaa !important;
  3034.       background: #333 !important;
  3035.     }
  3036.     a {
  3037.       color: deepskyblue;
  3038.     }
  3039.     textarea, input, select {
  3040.       background: #111;
  3041.       color: #BBB;
  3042.       border: 1px solid #555;
  3043.     }
  3044.     input[type=checkbox] {
  3045.       filter: invert(1);
  3046.     }
  3047.     input[type=range] {
  3048.       filter: invert(1) saturate(0);
  3049.     }
  3050.     input[type=range]:hover {
  3051.       filter: invert(1);
  3052.     }
  3053.     @supports (-moz-appearance: none) {
  3054.       input[type=checkbox],
  3055.       input[type=range],
  3056.       input[type=range]:hover {
  3057.         filter: none;
  3058.       }
  3059.     }
  3060.     .range-edit {
  3061.       box-shadow: 0 .5em 1em .5em #000;
  3062.     }
  3063.     #cssApp {
  3064.       color: darkseagreen;
  3065.     }
  3066.     #installHint {
  3067.       color: greenyellow;
  3068.     }
  3069.   }
  3070. </style>
  3071. <main>
  3072.   <a href="${MPIV_BASE_URL}">${GM_info.script.name}</a>
  3073.   <div id=x>x</div>
  3074.   <ul class=column>
  3075.     <li class=options>
  3076.       <label>Popup shows on
  3077.         <select id=start>
  3078.           <option value=auto>automatically
  3079.           <option value=context>Right click / Ctrl
  3080.           <option value=ctrl>Ctrl
  3081.         </select>
  3082.       </label>
  3083.       <label>after, sec<input id=delay type=number min=0.05 max=10 step=0.05 title=seconds></label>
  3084.       <label title="Activate only if the full version of the hovered image is that many times larger">
  3085.         if larger <input id=scale type=number min=1 max=100 step=.05>
  3086.       </label>
  3087.       <label>Zoom activates on
  3088.         <select id=zoom>
  3089.           <option value=context>Right click / Shift
  3090.           <option value=wheel>Wheel up / Shift
  3091.           <option value=shift>Shift
  3092.           <option value=auto>automatically
  3093.         </select>
  3094.       </label>
  3095.       <label>...and zooms to
  3096.         <select id=fit>
  3097.           <option value=all>fit to window
  3098.           <option value=large>fit if larger
  3099.           <option value=no>100%
  3100.           <option value="" title="Use custom scale factors">custom
  3101.         </select>
  3102.       </label>
  3103.     </li>
  3104.     <li class=options>
  3105.       <label>Zoom step, %<input id=zoomStep type=number min=100 max=400 step=1>
  3106.       </label>
  3107.       <label>When fully zoomed out:
  3108.         <select id=zoomOut>
  3109.           <option value=stay>stay in zoom mode
  3110.           <option value=auto>stay if still hovered
  3111.           <option value=close>close popup
  3112.         </select>
  3113.       </label>
  3114.       <label style="flex: 1" title="${trimLeft(`
  3115.         Scale factors to use when “zooms to” selector is set to “custom”.
  3116.         0 = fit to window,
  3117.         0! = same as 0 but also removes smaller values,
  3118.         * after a value marks the default zoom factor, for example: 1*
  3119.         The popup won't shrink below the image's natural size or window size for bigger mages.
  3120.         ${scalesHint}
  3121.       `)}">Custom scale factors:
  3122.         <input id=scales placeholder="${scalesHint}">
  3123.       </label>
  3124.     </li>
  3125.     <li class="options row">
  3126.       <label><input type=checkbox id=center>Always centered</label>
  3127.       <label title="Disable only if you spoof the HTTP headers yourself">
  3128.         <input type=checkbox id=xhr>Anti-hotlinking workaround
  3129.       </label>
  3130.       <label><input type=checkbox id=preload>Start preloading immediately</label>
  3131.       <label><input type=checkbox id=imgtab>Run in image tabs</label>
  3132.       <label title="Don't enable unless you explicitly use it in your custom CSS">
  3133.         <input type=checkbox id=globalStatus>Expose status on &lt;html&gt; node (may cause slowdowns)
  3134.       </label>
  3135.     </li>
  3136.     <li class="options stretch">
  3137.       <label>Background
  3138.         <span>
  3139.           <input id=uiBackgroundColor type=color><u></u>
  3140.           <input id=uiBackgroundOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3141.         </span>
  3142.       </label>
  3143.       <label>Border color, opacity, size
  3144.         <span>
  3145.           <input id=uiBorderColor type=color><u></u>
  3146.           <input id=uiBorderOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3147.           <input id=uiBorder type=range min=0 max=20 step=1 data-title="Border size: $px">
  3148.         </span>
  3149.       </label>
  3150.       <label>Shadow color, opacity, size
  3151.         <span>
  3152.           <input id=uiShadowColor type=color><u></u>
  3153.           <input id=uiShadowOpacity type=range min=0 max=100 step=1 data-title="Opacity: $%">
  3154.           <input id=uiShadow type=range min=0 max=100 step=1 data-title="
  3155.             ${'Shadow blur radius: $px\n"0" disables the shadow.'}">
  3156.         </span>
  3157.       </label>
  3158.       <label>Padding
  3159.         <span><input id=uiPadding type=range min=0 max=100 step=1 data-title="Padding: $px"></span>
  3160.       </label>
  3161.       <label>Margin
  3162.         <span><input id=uiMargin type=range min=0 max=100 step=1 data-title="Margin: $px"></span>
  3163.       </label>
  3164.     </li>
  3165.     <li>
  3166.       <a href="${MPIV_BASE_URL}css.html">Custom CSS:</a>&nbsp;
  3167.       e.g. <b>#mpiv-popup { animation: none !important }</b>
  3168.       <a href="#" id=reveal style="float: right"
  3169.          title="You can copy parts of it to override them in your custom CSS">
  3170.          View the built-in CSS</a>
  3171.       <div class=column>
  3172.         <textarea id=css spellcheck=false></textarea>
  3173.         <textarea id=cssApp spellcheck=false hidden readonly rows=30></textarea>
  3174.       </div>
  3175.     </li>
  3176.     <li style="display: flex; justify-content: space-between;">
  3177.       <div><a href="${MPIV_BASE_URL}host_rules.html">Custom host rules:</a></div>
  3178.       <div style="white-space: nowrap">
  3179.         To disable, put any symbol except <code>a..z 0..9 - .</code><br>
  3180.         in "d" value, for example <code>"d": "!foo.com"</code>
  3181.       </div>
  3182.       <div>
  3183.         <input id=search type=search placeholder=Search style="width: 10em; margin-left: 1em">
  3184.       </div>
  3185.     </li>
  3186.     <li style="margin-left: -3px; margin-right: -3px; overflow-y: auto; padding-left: 3px; padding-right: 3px;">
  3187.       <div id=rules class=column>
  3188.         ${isFF ? '<input spellcheck=false>' : '<textarea rows=1 spellcheck=false></textarea>'}
  3189.       </div>
  3190.     </li>
  3191.     <li>
  3192.       <div hidden id=installLoading>Loading...</div>
  3193.       <div hidden id=installHint>Double-click the rule (or select and press Enter) to add it.
  3194.         Click <code>Apply</code> or <code>Save</code> to confirm.</div>
  3195.       <a href="${MPIV_BASE_URL}more_host_rules.html" id=install>Install rule from repository...</a>
  3196.     </li>
  3197.   </ul>
  3198.   <div style="text-align:center">
  3199.     <button id=ok accesskey=s>Save</button>
  3200.     <button id=apply accesskey=a>Apply</button>
  3201.     <button id=import style="margin-right: 0">Import</button>
  3202.     <button id=export style="margin-left: 0">Export</button>
  3203.     <button id=cancel>Cancel</button>
  3204.     <div id=exportNotification hidden>Copied to clipboard.</div>
  3205.   </div>
  3206. </main>`);
  3207. }
  3208.  
  3209. function createGlobalStyle() {
  3210.   App.globalStyle = /*language=CSS*/ (String.raw`
  3211. #\mpiv-bar {
  3212.   position: fixed;
  3213.   z-index: 2147483647;
  3214.   top: 0;
  3215.   left: 0;
  3216.   right: 0;
  3217.   opacity: 0;
  3218.   transition: opacity 1s ease .25s;
  3219.   text-align: center;
  3220.   font-family: sans-serif;
  3221.   font-size: 15px;
  3222.   font-weight: bold;
  3223.   background: #0005;
  3224.   color: white;
  3225.   padding: 4px 10px;
  3226.   text-shadow: .5px .5px 2px #000;
  3227. }
  3228. #\mpiv-bar.\mpiv-show {
  3229.   opacity: 1;
  3230. }
  3231. #\mpiv-bar[data-zoom]::after {
  3232.   content: " (" attr(data-zoom) ")";
  3233.   opacity: .8;
  3234. }
  3235. #\mpiv-popup.\mpiv-show {
  3236.   display: inline;
  3237. }
  3238. #\mpiv-popup {
  3239.   display: none;
  3240.   cursor: none;
  3241.   animation: .2s \mpiv-fadein both;
  3242.   transition: box-shadow .25s, background-color .25s;
  3243. ${App.popupStyleBase = `
  3244.   border: none;
  3245.   box-sizing: border-box;
  3246.   position: fixed;
  3247.   z-index: 2147483647;
  3248.   padding: 0;
  3249.   margin: 0;
  3250.   top: 0;
  3251.   left: 0;
  3252.   width: auto;
  3253.   height: auto;
  3254.   transform-origin: top left;
  3255.   max-width: none;
  3256.   max-height: none;
  3257. `}
  3258. }
  3259. #\mpiv-popup.\mpiv-show {
  3260.   ${cfg.uiBorder ? `border: ${cfg.uiBorder}px solid ${Util.color('Border')};` : ''}
  3261.   ${cfg.uiPadding ? `padding: ${cfg.uiPadding}px;` : ''}
  3262.   ${cfg.uiMargin ? `margin: ${cfg.uiMargin}px;` : ''}
  3263.   box-shadow: ${cfg.uiShadow ? `2px 4px ${cfg.uiShadow}px 4px transparent` : 'none'};
  3264. }
  3265. #\mpiv-popup.\mpiv-show[loaded] {
  3266.   background-color: ${Util.color('Background')};
  3267.   ${cfg.uiShadow ? `box-shadow: 2px 4px ${cfg.uiShadow}px 4px ${Util.color('Shadow')};` : ''}
  3268. }
  3269. #\mpiv-popup.\mpiv-zoom-max {
  3270.   image-rendering: pixelated;
  3271. }
  3272. @keyframes \mpiv-fadein {
  3273.   from {
  3274.     opacity: 0;
  3275.     border-color: transparent;
  3276.   }
  3277.   to {
  3278.     opacity: 1;
  3279.   }
  3280. }
  3281. ` + (cfg.globalStatus ? String.raw`
  3282. .\mpiv-loading:not(.\mpiv-preloading) * {
  3283.   cursor: progress !important;
  3284. }
  3285. .\mpiv-edge #\mpiv-popup {
  3286.   cursor: default;
  3287. }
  3288. .\mpiv-error * {
  3289.   cursor: not-allowed !important;
  3290. }
  3291. .\mpiv-ready *, .\mpiv-large * {
  3292.   cursor: zoom-in !important;
  3293. }
  3294. .\mpiv-shift * {
  3295.   cursor: default !important;
  3296. }
  3297. ` : String.raw`
  3298. [\mpiv-status~="loading"]:not([\mpiv-status~="preloading"]) {
  3299.   cursor: progress !important;
  3300. }
  3301. #\mpiv-popup[\mpiv-status~="edge"] {
  3302.   cursor: default !important;
  3303. }
  3304. [\mpiv-status~="error"] {
  3305.   cursor: not-allowed !important;
  3306. }
  3307. [\mpiv-status~="ready"],
  3308. [\mpiv-status~="large"] {
  3309.   cursor: zoom-in !important;
  3310. }
  3311. [\mpiv-status~="shift"] {
  3312.   cursor: default !important;
  3313. }
  3314. `)).replace(/\\mpiv-status/g, STATUS_ATTR).replace(/\\mpiv-/g, PREFIX);
  3315.   App.popupStyleBase = App.popupStyleBase.replace(/;/g, '!important;');
  3316.   return App.globalStyle;
  3317. }
  3318.  
  3319. //#region Global utilities
  3320.  
  3321. const clamp = (v, min, max) => v < min ? min : v > max ? max : v;
  3322. const compareNumbers = (a, b) => a - b;
  3323. const flattenHtml = str => str.trim().replace(/\n\s*/g, '').replace(/\x20?([:>])\x20/g, '$1');
  3324. const dropEvent = e => (e.preventDefault(), e.stopPropagation());
  3325. const ensureArray = v => Array.isArray(v) ? v : [v];
  3326. const modKeyPressed = e => e.altKey || e.shiftKey || e.ctrlKey || e.metaKey;
  3327. const now = () => performance.now();
  3328. const sumProps = (...props) => props.reduce((sum, v) => sum + (parseFloat(v) || 0), 0);
  3329. const tryCatch = function (fn, ...args) {
  3330.   try {
  3331.     return fn.apply(this, args);
  3332.   } catch (e) {}
  3333. };
  3334.  
  3335. const $ = (sel, node = doc) => node.querySelector(sel) || false;
  3336. const $$ = (sel, node = doc) => node.querySelectorAll(sel);
  3337. const $create = (tag, props) => Object.assign(document.createElement(tag), props);
  3338. const $css = (el, props) => Object.entries(props).forEach(([k, v]) =>
  3339.   el.style.setProperty(k, v, 'important'));
  3340. const $many = (q, doc) => q && ensureArray(q).reduce((el, sel) => el || $(sel, doc), null);
  3341. const $prop = (sel, prop, node = doc) => (node = $(sel, node)) && node[prop] || '';
  3342. const $propUp = (node, prop) => (node = node.closest(`[${prop}]`)) &&
  3343.   (prop.startsWith('data-') ? node.getAttribute(prop) : node[prop]) || '';
  3344. const $remove = node => node && node.remove();
  3345.  
  3346. const isFF = CSS.supports('-moz-appearance', 'none');
  3347.  
  3348. //#endregion
  3349.  
  3350. //#region Init
  3351. cfg = new Config({save: true});
  3352. App.isImageTab = ((first = doc.body.firstElementChild) =>
  3353.   first && first === doc.body.lastElementChild && first.matches('img, video'))();
  3354. App.enabled = cfg.imgtab || !App.isImageTab;
  3355.  
  3356. GM_registerMenuCommand('MPIV: configure', setup);
  3357. doc.addEventListener('mouseover', Events.onMouseOver, {passive: true});
  3358.  
  3359. if (['greasyfork.org', 'w9p.co', 'github.com'].includes(hostname)) {
  3360.   doc.addEventListener('click', e => {
  3361.     const el = e.target.closest('blockquote, code, pre');
  3362.     const text = el && el.textContent.trim() || '';
  3363.     let rule;
  3364.     if (!e.button && !modKeyPressed(e) &&
  3365.         text.startsWith('{') && text.endsWith('}') &&
  3366.         /[{,]\s*"[degqrsu]"\s*:\s*"/.test(text) &&
  3367.         (rule = tryCatch(JSON.parse, text)) &&
  3368.         Object.keys(rule).some(k => /^[degqrsu]$/.test(k))) {
  3369.       setup({rule});
  3370.       dropEvent(e);
  3371.     }
  3372.   });
  3373. }
  3374.  
  3375. window.addEventListener('message', App.onMessage);
  3376. //#endregion