☰

Image Viewer

View full image without leaving the page or on a new tab without ads

当前为 2022-05-20 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name         Image Viewer
  3. // @version      1.3.0
  4. // @description  View full image without leaving the page or on a new tab without ads
  5. // @namespace    https://github.com/nikolay-borzov
  6. // @author       nikolay-borzov
  7. // @license      MIT
  8. // @icon         https://raw.githubusercontent.com/nikolay-borzov/user-scripts/master/image-viewer/icon.png
  9. // @homepageURL  https://github.com/nikolay-borzov/user-scripts
  10. // @homepage     https://github.com/nikolay-borzov/user-scripts
  11. // @supportURL   https://github.com/nikolay-borzov/user-scripts/issues
  12. // @match        *://*/*
  13. // @connect      fastpic.org
  14. // @connect      fastpic.ru
  15. // @connect      ibb.co
  16. // @connect      imagebam.com
  17. // @connect      imagetwist.com
  18. // @connect      imagevenue.com
  19. // @connect      imgdrive.net
  20. // @connect      imgtaxi.com
  21. // @connect      www.turboimagehost.com
  22. // @noframes
  23. // @run-at       document-start
  24. // @exclude      http://imgbb.co/*
  25. // @exclude      https://adult-images.ru/*
  26. // @exclude      https://fastpic.org/*
  27. // @exclude      https://freescreens.ru/*
  28. // @exclude      https://imageban.ru/*
  29. // @exclude      https://imagetwist.com/*
  30. // @exclude      https://imgadult.com/*
  31. // @exclude      https://imgbase.ru/*
  32. // @exclude      https://imgbox.com/*
  33. // @exclude      https://imgbum.ru/*
  34. // @exclude      https://imgclick.ru/*
  35. // @exclude      https://imgdrive.net/*
  36. // @exclude      https://imgtaxi.com/*
  37. // @exclude      https://payforpic.ru/*
  38. // @exclude      https://piccash.net/*
  39. // @exclude      https://picclick.ru/*
  40. // @exclude      https://picforall.ru/*
  41. // @exclude      https://vfl.ru/*
  42. // @exclude      https://www.imagebam.com/*
  43. // @exclude      https://www.imagevenue.com/*
  44. // @exclude      https://www.turboimagehost.com/*
  45. // @grant        GM_addStyle
  46. // @grant        GM_xmlhttpRequest
  47. // @grant        GM.xmlHttpRequest
  48. // @grant        GM_setValue
  49. // @grant        GM.setValue
  50. // @grant        GM_getValue
  51. // @grant        GM.getValue
  52. // @grant        GM_registerMenuCommand
  53. // @grant        GM.registerMenuCommand
  54. // @grant        GM_openInTab
  55. // @grant        GM.openInTab
  56. // ==/UserScript==
  57.  
  58. ;(function () {
  59.   /* global Bliss */
  60.   // eslint-disable-next-line -- blissfuljs v1.0.6 Shy https://blissfuljs.com/
  61.   !function(){function e(o,i,t){return i=void 0===i?1:i,(t=t||i+1)-i<=1?function(){if(arguments.length<=i||"string"===c.type(arguments[i]))return o.apply(this,arguments);var t,e,n=arguments[i];for(e in n){var r=Array.prototype.slice.call(arguments);r.splice(i,1,e,n[e]),t=o.apply(this,r);}return t}:e(e(o,i+1,t),i,t-1)}function s(e,n,t){var r=a(t);if("string"===r){var o=Object.getOwnPropertyDescriptor(n,t);!o||o.writable&&o.configurable&&o.enumerable&&!o.get&&!o.set?e[t]=n[t]:(delete e[t],Object.defineProperty(e,t,o));}else if("array"===r)t.forEach(function(t){t in n&&s(e,n,t);});else for(var i in n)t&&("regexp"===r&&!t.test(i)||"function"===r&&!t.call(n,i))||s(e,n,i);return e}function a(t){if(null===t)return "null";if(void 0===t)return "undefined";var e=(Object.prototype.toString.call(t).match(/^\[object\s+(.*?)\]$/)[1]||"").toLowerCase();return "number"==e&&isNaN(t)?"nan":e}var c=self.Bliss=s(function(t,e){return 2==arguments.length&&!e||!t?null:"string"===c.type(t)?(e||document).querySelector(t):t||null},self.Bliss);s(c,{extend:s,overload:e,type:a,property:c.property||"_",listeners:new(self.WeakMap?WeakMap:Map),original:{addEventListener:(self.EventTarget||Node).prototype.addEventListener,removeEventListener:(self.EventTarget||Node).prototype.removeEventListener},sources:{},noop:function(){},$:function(t,e){return t instanceof Node||t instanceof Window?[t]:2!=arguments.length||e?Array.prototype.slice.call("string"==typeof t?(e||document).querySelectorAll(t):t||[]):[]},defined:function(){for(var t=0;t<arguments.length;t++)if(void 0!==arguments[t])return arguments[t]},create:function(t,e){return t instanceof Node?c.set(t,e):(1===arguments.length&&(e="string"===c.type(t)?{}:(t=(e=t).tag,c.extend({},e,function(t){return "tag"!==t}))),c.set(document.createElement(t||"div"),e))},each:function(t,e,n){for(var r in n=n||{},t)n[r]=e.call(t,r,t[r]);return n},ready:function(e,t,n){if("function"!=typeof e||t||(t=e,e=void 0),e=e||document,t&&("loading"!==e.readyState?t():c.once(e,"DOMContentLoaded",function(){t();})),!n)return new Promise(function(t){c.ready(e,t,!0);})},Class:function(t){var e,n,r=["constructor","extends","abstract","static"].concat(Object.keys(c.classProps)),o=t.hasOwnProperty("constructor")?t.constructor:c.noop;2==arguments.length?(n=arguments[0],t=arguments[1]):((n=function(){if(this.constructor.__abstract&&this.constructor===n)throw new Error("Abstract classes cannot be directly instantiated.");n.super&&!e&&n.super.apply(this,arguments),o.apply(this,arguments);}).super=t.extends||null,!n.super||(e=0===(n.super+"").indexOf("class "))&&console.error(`You are using $.Class() to create a fake function-based class that extends a native JS class. This will not work. You should convert your code to use native JS classes too. 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XMLHttpRequest},e);for(n in r.method=r.method.toUpperCase(),c.hooks.run("fetch-args",r),"GET"===r.method&&r.data&&(r.url.search+=r.data),document.body.setAttribute("data-loading",r.url),r.xhr.open(r.method,r.url.href,!1!==r.async,r.user,r.password),e)if("upload"===n)r.xhr.upload&&"object"==typeof e[n]&&c.extend(r.xhr.upload,e[n]);else if(n in r.xhr)try{r.xhr[n]=e[n];}catch(t){self.console&&console.error(t);}var o,t=Object.keys(r.headers).map(function(t){return t.toLowerCase()});for(o in "GET"!==r.method&&-1===t.indexOf("content-type")&&r.xhr.setRequestHeader("Content-type","application/x-www-form-urlencoded"),r.headers)void 0!==r.headers[o]&&r.xhr.setRequestHeader(o,r.headers[o]);t=new Promise(function(t,e){r.xhr.onload=function(){document.body.removeAttribute("data-loading"),0===r.xhr.status||200<=r.xhr.status&&r.xhr.status<300||304===r.xhr.status?t(r.xhr):e(c.extend(Error(r.xhr.statusText),{xhr:r.xhr,get status(){return this.xhr.status}}));},r.xhr.onerror=function(){document.body.removeAttribute("data-loading"),e(c.extend(Error("Network Error"),{xhr:r.xhr}));},r.xhr.ontimeout=function(){document.body.removeAttribute("data-loading"),e(c.extend(Error("Network Timeout"),{xhr:r.xhr}));},r.xhr.send("GET"===r.method?null:r.data);});return t.xhr=r.xhr,t},value:function(t){var e="string"!=typeof t;return c.$(arguments).slice(+e).reduce(function(t,e){return t&&t[e]},e?t:self)}}),c.Hooks=new c.Class({add:function(t,e,n){if("string"==typeof arguments[0])(Array.isArray(t)?t:[t]).forEach(function(t){this[t]=this[t]||[],e&&this[t][n?"unshift":"push"](e);},this);else for(var t in arguments[0])this.add(t,arguments[0][t],e);},run:function(t,e){this[t]=this[t]||[],this[t].forEach(function(t){t.call(e&&e.context?e.context:e,e);});}}),c.hooks=new c.Hooks;c.property;c.Element=function(t){this.subject=t,this.data={},this.bliss={};},c.Element.prototype={set:e(function(t,e){t in c.setProps?c.setProps[t].call(this,e):t in this?this[t]=e:this.setAttribute(t,e);},0),transition:function(o,i){return new Promise(function(t,e){var n,r;"transition"in this.style&&0!==i?(n=c.extend({},this.style,/^transition(Duration|Property)$/),c.style(this,{transitionDuration:(i||400)+"ms",transitionProperty:Object.keys(o).join(", ")}),c.once(this,"transitionend",function(){clearTimeout(r),c.style(this,n),t(this);}),r=setTimeout(t,i+50,this),c.style(this,o)):(c.style(this,o),t(this));}.bind(this))},fire:function(t,e){var n=document.createEvent("HTMLEvents");return n.initEvent(t,!0,!0),this.dispatchEvent(c.extend(n,e))},bind:e(function(t,n){var e;1<arguments.length&&("function"===c.type(n)||n.handleEvent)&&(e=n,(n="object"===c.type(arguments[2])?arguments[2]:{capture:!!arguments[2]}).callback=e);var r=c.listeners.get(this)||{};t.trim().split(/\s+/).forEach(function(t){var e;-1<t.indexOf(".")&&(e=(t=t.split("."))[1],t=t[0]),r[t]=r[t]||[],0===r[t].filter(function(t){return 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t(e){o&&!o.call(this,e)||(this.removeEventListener(r,t),n(e));});})},toggleAttribute:function(t,e,n){(n=arguments.length<3?null!==e:n)?this.setAttribute(t,e):this.removeAttribute(t);}},c.setProps={style:function(t){for(var e in t)e in this.style?this.style[e]=t[e]:this.style.setProperty(e,t[e]);},attributes:function(t){for(var e in t)this.setAttribute(e,t[e]);},properties:function(t){c.extend(this,t);},events:function(t){if(1!=arguments.length||!t||!t.addEventListener)return c.bind.apply(this,[this].concat(c.$(arguments)));var e,n=this;if(c.listeners){var r,o=c.listeners.get(t);for(r in o)o[r].forEach(function(t){c.bind(n,r,t.callback,t.capture);});}for(e in t)0===e.indexOf("on")&&(this[e]=t[e]);},once:e(function(t,e){function n(){return c.unbind(r,t,n),e.apply(r,arguments)}var r=this;c.bind(this,t,n,{once:!0});},0),delegate:e(function(t,e,n){c.bind(this,t,function(t){t.target.closest(e)&&n.call(this,t);});},0,2),contents:function(t){!t&&0!==t||(Array.isArray(t)?t:[t]).forEach(function(t){var e=c.type(t);/^(string|number)$/.test(e)?t=document.createTextNode(t+""):"object"===e&&(t=c.create(t)),t instanceof Node&&this.appendChild(t);},this);},inside:function(t){t&&t.appendChild(this);},before:function(t){t&&t.parentNode.insertBefore(this,t);},after:function(t){t&&t.parentNode.insertBefore(this,t.nextSibling);},start:function(t){t&&t.insertBefore(this,t.firstChild);},around:function(t){t&&t.parentNode&&c.before(this,t),this.appendChild(t);}},c.Array=function(t){this.subject=t;},c.Array.prototype={all:function(t){var e=c.$(arguments).slice(1);return this[t].apply(this,e)}},c.add=e(function(r,n,o,t){o=c.extend({$:!0,element:!0,array:!0},o),"function"==c.type(n)&&(!o.element||r in c.Element.prototype&&t||(c.Element.prototype[r]=function(){return this.subject&&c.defined(n.apply(this.subject,arguments),this.subject)}),!o.array||r in c.Array.prototype&&t||(c.Array.prototype[r]=function(){var e=arguments;return this.subject.map(function(t){return t&&c.defined(n.apply(t,e),t)})}),o.$&&(c.sources[r]=c[r]=n,(o.array||o.element)&&(c[r]=function(){var t=[].slice.apply(arguments),e=t.shift(),n=o.array&&Array.isArray(e)?"Array":"Element";return c[n].prototype[r].apply({subject:e},t)})));},0),c.add(c.Array.prototype,{element:!1}),c.add(c.Element.prototype),c.add(c.setProps),c.add(c.classProps,{element:!1,array:!1});var n=document.createElement("_");c.add(c.extend({},HTMLElement.prototype,function(t){return "function"===c.type(n[t])}),null,!0);}();
  62.   // eslint-disable-next-line
  63.   const $ = Bliss;
  64.   // eslint-disable-next-line
  65.   const $$ = Bliss.$;
  66.  
  67.   const GM_METHOD_MAP = {
  68.     GM_addStyle: 'addStyle',
  69.     GM_deleteValue: 'deleteValue',
  70.     GM_getResourceURL: 'getResourceUrl',
  71.     GM_getValue: 'getValue',
  72.     GM_listValues: 'listValues',
  73.     GM_notification: 'notification',
  74.     GM_openInTab: 'openInTab',
  75.     GM_registerMenuCommand: 'registerMenuCommand',
  76.     GM_setClipboard: 'setClipboard',
  77.     GM_setValue: 'setValue',
  78.     GM_xmlhttpRequest: 'xmlHttpRequest',
  79.     GM_getResourceText: 'getResourceText',
  80.   }
  81.  
  82.   function getGM4PolyfilledMethod(methodName) {
  83.     const gm4MethodName = GM_METHOD_MAP[methodName]
  84.  
  85.     if (GM !== undefined && gm4MethodName in GM) {
  86.       return GM[gm4MethodName]
  87.     } else if (methodName in window) {
  88.       return function (...arguments_) {
  89.         return new Promise((resolve, reject) => {
  90.           try {
  91.             // eslint-disable-next-line unicorn/no-null
  92.             resolve(window[methodName].apply(null, arguments_))
  93.           } catch (error) {
  94.             reject(error)
  95.           }
  96.         })
  97.       }
  98.     }
  99.  
  100.     return async function () {
  101.       throw new Error(`Method ${methodName} is not available. Missing @grant?`)
  102.     }
  103.   }
  104.  
  105.   let addStyle = (css) => {
  106.     addStyle =
  107.       'GM_addStyle' in window
  108.         ? GM_addStyle // eslint-disable-line camelcase
  109.         : (css) => {
  110.             const head = document.querySelectorAll('head')[0]
  111.             const style = document.createElement('style')
  112.  
  113.             style.innerHTML = css
  114.             head.append(style)
  115.  
  116.             return style
  117.           }
  118.  
  119.     return addStyle(css)
  120.   }
  121.  
  122.   let request = (details) => {
  123.     request = getGM4PolyfilledMethod('GM_xmlhttpRequest')
  124.  
  125.     return request(details)
  126.   }
  127.  
  128.   const store = {
  129.     getValue: (name, defaultValue) => {
  130.       store.getValue = getGM4PolyfilledMethod('GM_getValue')
  131.  
  132.       return store.getValue(name, defaultValue)
  133.     },
  134.  
  135.     setValue: (name, value) => {
  136.       store.setValue = getGM4PolyfilledMethod('GM_setValue')
  137.  
  138.       return store.setValue(name, value)
  139.     },
  140.  
  141.     async patch(name, value) {
  142.       const oldValue = await store.getValue(name)
  143.  
  144.       store.setValue(name, {
  145.         ...oldValue,
  146.         ...value,
  147.       })
  148.     },
  149.   }
  150.  
  151.   let registerMenuCommand = (name, onClick, accessKey) => {
  152.     registerMenuCommand = getGM4PolyfilledMethod('GM_registerMenuCommand')
  153.  
  154.     return registerMenuCommand(name, onClick, accessKey)
  155.   }
  156.  
  157.   let openInTab = (url, openInBackground) => {
  158.     openInTab = getGM4PolyfilledMethod('GM_openInTab')
  159.  
  160.     return openInTab(url, openInBackground)
  161.   }
  162.  
  163.   const imgbum = {
  164.     id: 'imgbum',
  165.     name: 'imgbum.ru',
  166.     linkRegExp: /\/imgbum\.(net|ru)/,
  167.  
  168.     async getURL(link) {
  169.       return link.thumbnailURL.replace('-thumb', '')
  170.     },
  171.   }
  172.  
  173.   const adultImages = {
  174.     id: 'adult-images',
  175.     name: 'Adult-Images.ru',
  176.     linkRegExp: /\/(adult-images|money-pic)\.ru/,
  177.  
  178.     getURL: imgbum.getURL,
  179.   }
  180.  
  181.   async function getURLFromPage(link, extractor, requestDetails) {
  182.     const html = await getPageHtml({ url: link.url, ...requestDetails })
  183.  
  184.     const match = extractor.imageURLRegExp?.exec(html)
  185.  
  186.     let url
  187.  
  188.     if (match) {
  189.       url = match.groups ? match.groups.url : match[1]
  190.     }
  191.  
  192.     if (!url) {
  193.       console.error(
  194.         `[image-viewer] Failed to get URL from page source: ${link.url}`
  195.       )
  196.     }
  197.  
  198.     return url
  199.   }
  200.  
  201.   async function getPageHtml(requestDetails) {
  202.     const response = await request(requestDetails)
  203.  
  204.     return response.responseText
  205.   }
  206.  
  207.   const fastpic = {
  208.     id: 'fastpic',
  209.     name: 'FastPic',
  210.     linkRegExp: /fastpic\.(?:ru|org)\/view/,
  211.     imageURLRegExp: /src="(?<url>http[^"]+)" class="image img-fluid"/,
  212.     getURL: getURLFromPage,
  213.   }
  214.  
  215.   const URL_PARTS_REGEXP = /i(\d+).+\.(ru|org)\/big(\/\d+\/\d+\/).+\/([^/]+)$/
  216.  
  217.   const fastpicDirect = {
  218.     id: 'fastpicDirect',
  219.     name: 'FastPic (direct link)',
  220.     linkRegExp: /fastpic\.(?:ru|org)\/big/,
  221.  
  222.     async getURL(link) {
  223.       const [, index, domain, date, filename] =
  224.         URL_PARTS_REGEXP.exec(link.url) || []
  225.  
  226.       const url = `https://fastpic.${domain}/view/${index}${date}${filename}.html`
  227.  
  228.       return fastpic.getURL({ ...link, url }, fastpic)
  229.     },
  230.   }
  231.  
  232.   const imagebam = {
  233.     id: 'imagebam',
  234.     name: 'ImageBam',
  235.     linkRegExp: /www\.imagebam\.com\//,
  236.     imageURLRegExp: /src="(?<url>[^"]+)".+class="main-image/,
  237.  
  238.     async getURL(link, extractor) {
  239.       return getURLFromPage(link, extractor, {
  240.         cookie: 'nsfw_inter=1',
  241.       })
  242.     },
  243.   }
  244.  
  245.   const DATE_PATTERN = /(\d{4})\.(\d{2})\.(\d{2})/
  246.  
  247.   const imageban = {
  248.     id: 'imageban',
  249.     name: 'ImageBan.ru',
  250.     linkRegExp: /imageban\.ru\/show/,
  251.  
  252.     async getURL(link) {
  253.       return link.thumbnailURL
  254.         .replace('thumbs', 'out')
  255.         .replace(DATE_PATTERN, '$1/$2/$3')
  256.     },
  257.   }
  258.  
  259.   const imagebanDirect = {
  260.     id: 'imagebanDirect',
  261.     name: 'ImageBan.ru (direct link)',
  262.     linkRegExp: /imageban\.ru\/out/,
  263.  
  264.     async getURL(link) {
  265.       return link.url
  266.     },
  267.   }
  268.  
  269.   const imagetwist = {
  270.     id: 'imagetwist',
  271.     name: 'ImageTwist',
  272.     linkRegExp: /imagetwist\.com/,
  273.     viewMode: 'origin-download',
  274.  
  275.     async getURL(link) {
  276.       const imageName = link.url.split('/').pop()?.replace('.html', '')
  277.       const extension = imageName?.split('.').pop() ?? ''
  278.       const imageUrl = link.thumbnailURL
  279.         .replace('/th/', '/i/')
  280.         .slice(0, -extension.length)
  281.  
  282.       return `${imageUrl}${extension}/${imageName}`
  283.     },
  284.   }
  285.  
  286.   const HOST_REPLACE_REG_EXP = /(picturelol|picshick|imageshimage)/
  287.  
  288.   const imagetwistBased = {
  289.     id: 'imagetwistBased',
  290.     name: 'ImageTwist based (legacy)',
  291.     hosts: ['Picturelol.com', 'PicShick.com', 'Imageshimage.com'],
  292.     linkRegExp: /(picturelol|picshick|imageshimage)\.com/,
  293.     viewMode: 'origin-download',
  294.  
  295.     async getURL(link) {
  296.       const imageName = link.url.split('/').pop()
  297.       const imageUrl = link.thumbnailURL
  298.         .replace('/th/', '/i/')
  299.         .replace(HOST_REPLACE_REG_EXP, 'imagetwist')
  300.  
  301.       return `${imageUrl}/${imageName}`
  302.     },
  303.   }
  304.  
  305.   const imagevenue = {
  306.     id: 'imagevenue,',
  307.     name: 'ImageVenue.com',
  308.     linkRegExp: /imagevenue\.com\//,
  309.     imageURLRegExp: /data-toggle="full">\W*<img src="(?<url>[^"]*)/im,
  310.     getURL: getURLFromPage,
  311.   }
  312.  
  313.   const imgadult = {
  314.     id: 'imgadult',
  315.     name: 'ImgAdult',
  316.     linkRegExp: /\/imgadult\.com/,
  317.  
  318.     async getURL(link) {
  319.       return link.thumbnailURL.replace('/small/', '/big/')
  320.     },
  321.   }
  322.  
  323.   const imgbb = {
  324.     id: 'imgbb',
  325.     name: 'ImgBB',
  326.     linkRegExp: /\/ibb\.co/,
  327.     imageURLRegExp: /rel="image_src" href="(?<url>http[^"]+)"/,
  328.  
  329.     async getURL(link) {
  330.       if (link.thumbnailURL.includes('//thumb')) {
  331.         return link.thumbnailURL.replace('//thumb', '//image')
  332.       }
  333.  
  334.       return getURLFromPage(link, imgbb)
  335.     },
  336.   }
  337.  
  338.   const imgbox = {
  339.     id: 'imgbox',
  340.     name: 'imgbox',
  341.     linkRegExp: /\/imgbox\.com/,
  342.  
  343.     async getURL(link) {
  344.       return link.thumbnailURL.replace('/thumbs', '/images').replace('_t', '_o')
  345.     },
  346.   }
  347.  
  348.   const imgdrive = {
  349.     id: 'imgdrive',
  350.     name: 'ImgDrive.net',
  351.     linkRegExp: /\/imgdrive\.net/,
  352.     viewMode: 'origin-download',
  353.  
  354.     async getURL(link) {
  355.       return link.thumbnailURL
  356.         .replace('/small/', '/big/')
  357.         .replace('/small-medium/', '/big/')
  358.     },
  359.   }
  360.  
  361.   const imgtaxi = {
  362.     id: 'imgtaxi',
  363.     name: 'ImgTaxi.com',
  364.     linkRegExp: /\/imgtaxi\.com/,
  365.     viewMode: 'origin-download',
  366.     getURL: imgdrive.getURL,
  367.   }
  368.  
  369.   const piccash = {
  370.     id: 'piccash',
  371.     name: 'PicCash',
  372.     linkRegExp: /\/piccash\.net/,
  373.  
  374.     async getURL(link) {
  375.       return link.thumbnailURL.replace('_thumb', '_full').replace('-thumb', '')
  376.     },
  377.   }
  378.  
  379.   const picforall = {
  380.     id: 'picforall',
  381.     name: 'PicForAll',
  382.     hosts: [
  383.       'freescreens.ru',
  384.       'imgclick.ru',
  385.       'picclick.ru',
  386.       'payforpic.ru',
  387.       'picforall.ru',
  388.       'imgbase.ru',
  389.     ],
  390.     linkRegExp:
  391.       /\/(freescreens|imgclick|picclick|payforpic|picforall|imgbase)\.ru/,
  392.     getURL: imgbum.getURL,
  393.   }
  394.  
  395.   const turboimagehost = {
  396.     id: 'turboimagehost',
  397.     name: 'TurboImageHost.com',
  398.     linkRegExp: /turboimagehost\.com\/p/,
  399.     imageURLRegExp: /rel="image_src" href="(?<url>http[^"]+)"/,
  400.     viewMode: 'new-tab',
  401.     getURL: getURLFromPage,
  402.   }
  403.  
  404.   const REMOVE_SUFFIX_REGEXP = /_.?(.+)$/
  405.  
  406.   const vfl = {
  407.     id: 'vfl',
  408.     name: 'VFL.Ru',
  409.     linkRegExp: /^http:\/\/vfl\.ru/,
  410.  
  411.     async getURL(link) {
  412.       return link.thumbnailURL.replace(REMOVE_SUFFIX_REGEXP, '$1')
  413.     },
  414.   }
  415.  
  416.   const hostExtractors = /* #__PURE__ */ Object.freeze({
  417.     __proto__: null,
  418.     adultImages,
  419.     fastpic,
  420.     fastpicDirect,
  421.     imagebam,
  422.     imageban,
  423.     imagebanDirect,
  424.     imagetwist,
  425.     imagetwistBased,
  426.     imagevenue,
  427.     imgadult,
  428.     imgbb,
  429.     imgbox,
  430.     imgbum,
  431.     imgdrive,
  432.     imgtaxi,
  433.     piccash,
  434.     picforall,
  435.     turboimagehost,
  436.     vfl,
  437.   })
  438.  
  439.   let extractorsActive = []
  440.  
  441.   const extractors = Object.values(hostExtractors).filter(Boolean)
  442.  
  443.   const extractorsByID = extractors.reduce((result, extractor) => {
  444.     result[extractor.id] = extractor
  445.  
  446.     return result
  447.   }, {})
  448.  
  449.   const urlExtractor = {
  450.     getImageHostsMetadata() {
  451.       const result = extractors.map(({ id, name, hosts }) => ({
  452.         id,
  453.         name,
  454.         description: hosts ? hosts.join(', ') : '',
  455.       }))
  456.  
  457.       return sortCaseInsensitive(result, ({ name }) => name)
  458.     },
  459.  
  460.     async getImageURL(link) {
  461.       const extractor = extractorsByID[link.host]
  462.  
  463.       const imageURL = await extractor.getURL(link, extractor)
  464.  
  465.       if (!imageURL) {
  466.         console.error(
  467.           `[image-viewer] Failed to get URL for ${link.host}:${link.url}`
  468.         )
  469.       }
  470.  
  471.       return imageURL
  472.     },
  473.  
  474.     getExtractorByHost(hostId) {
  475.       return extractorsByID[hostId]
  476.     },
  477.  
  478.     getHostExtractorMatcher(enabledHosts) {
  479.       extractorsActive = extractors.filter((extractor) =>
  480.         enabledHosts.includes(extractor.id)
  481.       )
  482.  
  483.       let previousExtractor
  484.  
  485.       return (url) => {
  486.         if (previousExtractor && previousExtractor.linkRegExp.test(url)) {
  487.           return previousExtractor
  488.         }
  489.  
  490.         const extractor = extractorsActive.find((extractor) =>
  491.           extractor.linkRegExp.test(url)
  492.         )
  493.  
  494.         if (extractor) {
  495.           previousExtractor = extractor
  496.  
  497.           return extractor
  498.         }
  499.       }
  500.     },
  501.   }
  502.  
  503.   function sortCaseInsensitive(items, getValue) {
  504.     return items
  505.       .map((value, index) => ({ index, value: getValue(value).toLowerCase() }))
  506.       .sort((a, b) => {
  507.         if (a.value > b.value) {
  508.           return 1
  509.         }
  510.         if (a.value < b.value) {
  511.           return -1
  512.         }
  513.  
  514.         return 0
  515.       })
  516.       .map((m) => items[m.index])
  517.   }
  518.  
  519.   const CLASSES$1 = {
  520.     open: 'iv-config-form--open',
  521.   }
  522.  
  523.   let configMenu
  524.   const currentHost = unsafeWindow.location.host
  525.  
  526.   async function initHostConfig() {
  527.     const config = await getHostConfig()
  528.  
  529.     await registerMenuCommand('Settings', () => showMenu(config))
  530.  
  531.     return config
  532.   }
  533.  
  534.   async function getHostConfig() {
  535.     const hosts = urlExtractor.getImageHostsMetadata()
  536.  
  537.     const storedConfig = await store.getValue(currentHost, { hosts: {} })
  538.     const enabledHosts = []
  539.  
  540.     for (const host of hosts) {
  541.       const id = host.id
  542.       const isEnabled = id in storedConfig.hosts ? storedConfig.hosts[id] : true
  543.  
  544.       host.isEnabled = isEnabled
  545.       storedConfig.hosts[id] = isEnabled
  546.  
  547.       if (isEnabled) {
  548.         enabledHosts.push(id)
  549.       }
  550.     }
  551.  
  552.     storedConfig.hosts = hosts.reduce((result, host) => {
  553.       result[host.id] = host.isEnabled
  554.  
  555.       return result
  556.     }, {})
  557.  
  558.     return {
  559.       hosts,
  560.       storedConfig,
  561.       enabledHosts,
  562.     }
  563.   }
  564.  
  565.   function showMenu(config) {
  566.     createMenuElement(config).classList.add(CLASSES$1.open)
  567.   }
  568.  
  569.   function createMenuElement(config) {
  570.     if (configMenu) {
  571.       return configMenu
  572.     }
  573.  
  574.     const rows = config.hosts.map((host) => createConfigMenuRow(host))
  575.  
  576.     configMenu = $.create('div', {
  577.       id: 'iv-config-form',
  578.       className: 'iv-config-form',
  579.       contents: [
  580.         createMenuHeader(),
  581.         {
  582.           tag: 'div',
  583.           className: 'iv-config-form__options',
  584.           contents: rows,
  585.         },
  586.       ],
  587.       delegate: {
  588.         change: {
  589.           '.js-iv-config-checkbox': ({ target: { value, checked } }) =>
  590.             updateHostConfig(config.storedConfig, value, checked),
  591.         },
  592.       },
  593.     })
  594.  
  595.     document.body.append(configMenu)
  596.  
  597.     return configMenu
  598.   }
  599.  
  600.   function createConfigMenuRow(host) {
  601.     return $.create('label', {
  602.       className: 'iv-config-form__label',
  603.       title: host.description,
  604.       contents: [
  605.         {
  606.           tag: 'input',
  607.           type: 'checkbox',
  608.           className: 'iv-config-form__checkbox js-iv-config-checkbox',
  609.           checked: host.isEnabled,
  610.           value: host.id,
  611.         },
  612.         host.name,
  613.       ],
  614.     })
  615.   }
  616.  
  617.   function createMenuHeader() {
  618.     const closeButton = $.create('a', {
  619.       href: '#',
  620.       title: 'Close',
  621.       className: `iv-icon-button iv-icon-button--small iv-icon iv-icon--type-close`,
  622.       events: {
  623.         click: (event) => {
  624.           event.preventDefault()
  625.           configMenu.classList.remove(CLASSES$1.open)
  626.         },
  627.       },
  628.     })
  629.  
  630.     return {
  631.       tag: 'div',
  632.       className: 'iv-config-form__header',
  633.       contents: [
  634.         {
  635.           tag: 'span',
  636.           className: 'iv-config-form__header-title',
  637.           contents: `Settings for ${currentHost}`,
  638.         },
  639.         closeButton,
  640.       ],
  641.     }
  642.   }
  643.  
  644.   function updateHostConfig(config, hostName, isEnabled) {
  645.     config.hosts[hostName] = isEnabled
  646.     store.setValue(currentHost, config)
  647.   }
  648.  
  649.   const css_248z =
  650.     "@keyframes spin{0%{transform:translate(-50%,-50%) rotate(0deg)}to{transform:translate(-50%,-50%) rotate(1turn)}}.iv-icon{position:relative}.iv-icon:after,.iv-image-link img:after{background-position:50%;background-repeat:no-repeat;background-size:contain;content:\"\";height:100%;left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);width:100%;z-index:2}.iv-icon--hover:after{opacity:0;transition:opacity .35s ease}.iv-icon--hover:hover:after{opacity:1}.iv-icon--size-button:after{height:50px;width:50px}.iv-icon--type-loading:after{animation:spin 1s linear infinite;background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='%23fff'%3E%3Cpath d='M12 4V2A10 10 0 0 0 2 12h2a8 8 0 0 1 8-8Z'/%3E%3C/svg%3E\")!important;opacity:1}.iv-icon--type-zoom:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M15.5 14h-.79l-.28-.27A6.471 6.471 0 0 0 16 9.5 6.5 6.5 0 1 0 9.5 16c1.61 0 3.09-.59 4.23-1.57l.27.28v.79l5 4.99L20.49 19l-4.99-5zm-6 0C7.01 14 5 11.99 5 9.5S7.01 5 9.5 5 14 7.01 14 9.5 11.99 14 9.5 14zm.5-7H9v2H7v1h2v2h1v-2h2V9h-2z'/%3E%3C/svg%3E\")}.iv-icon--type-open-in-new:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0z' fill='none'/%3E%3Cpath d='M19 19H5V5h7V3H5a2 2 0 0 0-2 2v14a2 2 0 0 0 2 2h14c1.1 0 2-.9 2-2v-7h-2v7zM14 3v2h3.59l-9.83 9.83 1.41 1.41L19 6.41V10h2V3h-7z'/%3E%3C/svg%3E\");height:40px;width:40px}.iv-icon--type-next:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M10.02 6 8.61 7.41 13.19 12l-4.58 4.59L10.02 18l6-6-6-6z'/%3E%3C/svg%3E\")}.iv-icon--type-previous:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M15.61 7.41 14.2 6l-6 6 6 6 1.41-1.41L11.03 12l4.58-4.59z'/%3E%3C/svg%3E\")}.iv-icon--type-close:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M19 6.41 17.59 5 12 10.59 6.41 5 5 6.41 10.59 12 5 17.59 6.41 19 12 13.41 17.59 19 19 17.59 13.41 12 19 6.41z'/%3E%3C/svg%3E\")}.iv-icon--type-expand:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M7 14H5v5h5v-2H7v-3zm-2-4h2V7h3V5H5v5zm12 7h-3v2h5v-5h-2v3zM14 5v2h3v3h2V5h-5z'/%3E%3C/svg%3E\")}.iv-icon--type-shrink:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' height='24' width='24' fill='%23fff'%3E%3Cpath d='M0 0h24v24H0V0z' fill='none'/%3E%3Cpath d='M5 16h3v3h2v-5H5v2zm3-8H5v2h5V5H8v3zm6 11h2v-3h3v-2h-5v5zm2-11V5h-2v5h5V8h-3z'/%3E%3C/svg%3E\")}.iv-icon--type-image-broken:after,.iv-image-link img:after{background-image:url(\"data:image/svg+xml;charset=utf-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='%23fff'%3E%3Cpath d='M21 5v6.59l-3-3.01-4 4.01-4-4-4 4-3-3.01V5a2 2 0 0 1 2-2h14a2 2 0 0 1 2 2m-3 6.42 3 3.01V19a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2v-6.58l3 2.99 4-4 4 4'/%3E%3C/svg%3E\")}.iv-image-link{border:1px solid rgba(0,0,0,.2);box-shadow:1px 1px 3px rgba(0,0,0,.5);display:inline-flex;margin:3px;min-height:50px;min-width:50px;padding:4px;vertical-align:top}.iv-image-link img{margin:0}.iv-image-link>:not(img){align-items:center;display:flex;justify-content:center;width:100%}.iv-image-link:before{background-color:rgba(0,0,0,.5);bottom:4px;content:\"\";left:4px;opacity:0;position:absolute;right:4px;top:4px;transition:opacity .35s ease;z-index:1}.iv-image-link.iv-icon--type-loading:before,.iv-image-link:hover:before{opacity:1}.iv-image-link img:after,.iv-image-link img:before{content:\"\";position:absolute}.iv-image-link img:before{background-color:rgba(0,0,0,.2);height:100%;left:0;top:0;width:100%}.iv-image-link img:after{height:35px;width:35px;z-index:0}.iv-image-view{background-color:rgba(0,0,0,.8);color:#fff;display:none;flex-direction:column;height:0;opacity:0;transition:opacity .35s ease-out;user-select:none}.iv-image-view--open body,html.iv-image-view--open{overflow:hidden}.iv-image-view--open .iv-image-view{bottom:0;display:flex;height:auto;left:0;opacity:1;position:fixed;right:0;top:0;z-index:3}.iv-image-view--single .single-hide{visibility:hidden}.iv-image-view__footer,.iv-image-view__header{background-color:rgba(0,0,0,.8);display:flex}.iv-image-view__footer-wrapper,.iv-image-view__header-wrapper{z-index:2}.iv-image-view__header-wrapper{box-shadow:0 3px 7px rgba(0,0,0,.7)}.iv-image-view__footer-wrapper{box-shadow:0 -3px 7px rgba(0,0,0,.7)}.iv-image-view__header{justify-content:space-between}.iv-image-view__footer{justify-content:center}.iv-image-view__body{display:flex;height:100%;overflow:auto;position:relative}.iv-image-view__body::-webkit-scrollbar{width:20px}.iv-image-view__body::-webkit-scrollbar-thumb{background-color:rgba(0,0,0,.8)}.iv-image-view__body::-webkit-scrollbar-track{background-color:hsla(0,0%,100%,.8)}.iv-thumbnail-wrapper{display:flex;height:100%;left:0;position:absolute;top:0;width:100%;z-index:0}.iv-image-view__number{align-items:center;display:flex;font-size:18px;padding:0 40px}.iv-image-view__backdrop{height:100%;left:0;position:fixed;top:0;width:100%;z-index:1}.iv-image,.iv-thumbnail{margin:auto;max-height:100%;max-width:100%;object-fit:contain}.iv-image{opacity:1;transition:opacity .35s ease-out;z-index:2}.iv-thumbnail{filter:blur(5px)}.iv-icon--type-error .iv-image,.iv-image-view__image--loading .iv-image,.iv-image-view__image--thumbnail .iv-image{opacity:0}.iv-image-view__image--thumbnail .iv-thumbnail-wrapper{z-index:2}.iv-image-view--full-height .iv-image,.iv-image-view--full-height .iv-thumbnail{cursor:grab;max-height:none}.iv-image-view--full-height .iv-image--grabbing{cursor:grabbing}.iv-icon-button{height:50px;transition:all .35s ease-out;width:50px}.iv-icon-button--small{height:25px;width:25px}.iv-icon-button+.iv-icon-button{margin-left:5px}.iv-icon-button:hover{background-color:hsla(0,0%,100%,.1)}.iv-icon-button--active,.iv-icon-button:active{background-color:hsla(0,0%,100%,.2)}.iv-config-form{background-color:rgba(0,0,0,.85);color:#fff;display:none;flex-direction:column;height:50%;left:10px;max-width:500px;padding:10px;top:10px;width:50%}.iv-config-form--open{display:flex;position:fixed;z-index:3}.iv-config-form__header{align-items:center;display:flex;padding:10px}.iv-config-form__header-title{flex-grow:1}.iv-config-form__options{display:flex;flex-flow:column wrap;flex-grow:1;overflow:auto}.iv-config-form__label{align-items:center;display:flex;flex:0 0 auto;margin:0;padding:10px;transition:all .35s ease-out}.iv-config-form__label:hover{background-color:hsla(0,0%,100%,.15)}.iv-config-form__checkbox{margin:0 5px 0 0!important}"
  651.  
  652.   const CLASSES = {
  653.     imageLink: 'js-image-link',
  654.     imageLinkOpenInNew: 'js-image-link-open-in-new',
  655.     zoomIcon: 'iv-icon--type-zoom',
  656.     openInNewIcon: 'iv-icon--type-open-in-new',
  657.     imageLinkHover: 'iv-icon--hover',
  658.     brokenImageIcon: 'iv-icon--type-image-broken',
  659.     loadingIcon: 'iv-icon--type-loading',
  660.     loading: 'iv-image-view__image--loading',
  661.     thumbnail: 'iv-image-view__image--thumbnail',
  662.     open: 'iv-image-view--open',
  663.     single: 'iv-image-view--single',
  664.     fullHeight: 'iv-image-view--full-height',
  665.     iconExpand: 'iv-icon--type-expand',
  666.     iconShrink: 'iv-icon--type-shrink',
  667.     grabbing: 'iv-image--grabbing',
  668.     buttonActive: 'iv-icon-button--active',
  669.   }
  670.  
  671.   const SELECTORS = {
  672.     imageLink: `.${CLASSES.imageLink}`,
  673.     imageOpenInNewLink: `.${CLASSES.imageLinkOpenInNew}`,
  674.   }
  675.  
  676.   const EMPTY_SRC =
  677.     'data:image/gif;base64,R0lGODlhAQABAAAAACH5BAEAAAAALAAAAAABAAEAAAI='
  678.  
  679.   const TRANSITION_DURATION = 350
  680.  
  681.   function initViewer(enabledHosts) {
  682.     addStyle(css_248z)
  683.  
  684.     const container = $('body')
  685.  
  686.     const linkCommonClasses = [
  687.       'iv-image-link',
  688.       'iv-icon',
  689.       'iv-icon--hover',
  690.       'iv-icon--size-button',
  691.     ]
  692.  
  693.     const getExtractor = urlExtractor.getHostExtractorMatcher(enabledHosts)
  694.  
  695.     const imagesWithLinks = $$('a > img, a > var', container)
  696.       .map((img) => ({
  697.         link: img.parentElement,
  698.         thumbnailUrl: img.src ?? img.title,
  699.       }))
  700.       .filter(({ link }) => link.href)
  701.  
  702.     for (const { link, thumbnailUrl } of imagesWithLinks) {
  703.       const extractor = getExtractor(link.href)
  704.  
  705.       if (!extractor) {
  706.         continue
  707.       }
  708.  
  709.       link.dataset.ivHost = extractor.id
  710.       link.dataset.ivThumbnail = thumbnailUrl
  711.  
  712.       let viewModeClasses
  713.  
  714.       if (extractor.viewMode === 'new-tab') {
  715.         viewModeClasses = [CLASSES.imageLinkOpenInNew, CLASSES.openInNewIcon]
  716.         link.setAttribute('title', 'Open in new tab')
  717.       } else {
  718.         viewModeClasses = [CLASSES.imageLink, CLASSES.zoomIcon]
  719.         link.setAttribute('title', 'Open viewer')
  720.       }
  721.  
  722.       link.classList.add(...linkCommonClasses, ...viewModeClasses)
  723.     }
  724.  
  725.     $.delegate(container, 'click', {
  726.       [SELECTORS.imageLink]: events.openViewerLinkClick,
  727.       [SELECTORS.imageOpenInNewLink]: events.openInTabLinkClick,
  728.     })
  729.   }
  730.  
  731.   const elements = {
  732.     container: undefined,
  733.     image: undefined,
  734.     imageThumbnail: undefined,
  735.     imageContainer: undefined,
  736.     imageNumber: undefined,
  737.     imageTotal: undefined,
  738.     buttons: {
  739.       next: undefined,
  740.       previous: undefined,
  741.       close: undefined,
  742.       toggleFullHeight: undefined,
  743.     },
  744.   }
  745.  
  746.   const state = {
  747.     isFirstClick: true,
  748.     isOpened: false,
  749.     currentLink: undefined,
  750.     linksSet: [],
  751.     isSingle: false,
  752.     getCurrentLinkIndex() {
  753.       return this.currentLink === undefined
  754.         ? -1
  755.         : this.linksSet.indexOf(this.currentLink)
  756.     },
  757.     getLastLinkIndex() {
  758.       return this.linksSet.length - 1
  759.     },
  760.     dragPosition: 0,
  761.     dragging: false,
  762.   }
  763.  
  764.   const image = {
  765.     async getFullSizeURL(link) {
  766.       let imageURL = link.dataset.ivImgUrl
  767.  
  768.       if (imageURL) {
  769.         return imageURL
  770.       }
  771.  
  772.       const thumbnailURL = link.dataset.ivThumbnail
  773.       const imageHost = link.dataset.ivHost
  774.  
  775.       if (!thumbnailURL || !imageHost) {
  776.         throw new Error(
  777.           '[image-viewer] Either thumbnail URL or host is not set'
  778.         )
  779.       }
  780.  
  781.       imageURL = await urlExtractor.getImageURL({
  782.         url: link.href,
  783.         thumbnailURL,
  784.         host: imageHost,
  785.       })
  786.  
  787.       if (!imageURL) {
  788.         image.markAsBroken(link)
  789.  
  790.         return
  791.       }
  792.  
  793.       link.dataset.ivImgUrl = imageURL
  794.  
  795.       return imageURL
  796.     },
  797.  
  798.     async showInViewer(link) {
  799.       const {
  800.         container,
  801.         image: img,
  802.         imageThumbnail: thumbnail,
  803.         imageNumber,
  804.       } = elements
  805.  
  806.       state.currentLink = link
  807.  
  808.       if (state.isSingle) {
  809.         container.classList.add(CLASSES.single)
  810.       } else {
  811.         container.classList.remove(CLASSES.single)
  812.         imageNumber.textContent = (state.getCurrentLinkIndex() + 1).toString()
  813.       }
  814.  
  815.       if (!state.isOpened) {
  816.         document.documentElement.classList.add(CLASSES.open)
  817.         state.isOpened = true
  818.       }
  819.  
  820.       img.src = EMPTY_SRC
  821.  
  822.       if (link.classList.contains(CLASSES.brokenImageIcon)) {
  823.         container.classList.add(CLASSES.brokenImageIcon)
  824.  
  825.         return
  826.       }
  827.  
  828.       container.classList.remove(CLASSES.brokenImageIcon)
  829.  
  830.       container.classList.add(CLASSES.loading, CLASSES.loadingIcon)
  831.  
  832.       const isSizeKnown = Boolean(link.dataset.ivWidth)
  833.       const thumbnailURL = link.dataset.ivThumbnail
  834.       const imageHost = link.dataset.ivHost
  835.  
  836.       if (!thumbnailURL || !imageHost) {
  837.         throw new Error(
  838.           '[image-viewer] Either thumbnail URL or host is not set'
  839.         )
  840.       }
  841.  
  842.       if (isSizeKnown) {
  843.         thumbnail.width = Number(link.dataset.ivWidth)
  844.         thumbnail.src = thumbnailURL
  845.  
  846.         container.classList.add(CLASSES.thumbnail)
  847.       }
  848.  
  849.       const imageURL = await image.getFullSizeURL(link)
  850.  
  851.       if (!imageURL) {
  852.         return
  853.       }
  854.  
  855.       try {
  856.         const extractor = urlExtractor.getExtractorByHost(imageHost)
  857.  
  858.         if (extractor.viewMode === 'origin-download') {
  859.           img.src = await image.loadAsBlob(imageURL)
  860.         } else {
  861.           await image.preload(
  862.             imageURL,
  863.             isSizeKnown ? undefined : image.setThumbnailSize
  864.           )
  865.  
  866.           img.src = imageURL
  867.         }
  868.  
  869.         container.classList.remove(
  870.           CLASSES.thumbnail,
  871.           CLASSES.loading,
  872.           CLASSES.loadingIcon
  873.         )
  874.  
  875.         setTimeout(image.hideThumbnail, TRANSITION_DURATION)
  876.       } catch {
  877.         link.classList.remove(CLASSES.imageLink)
  878.         image.markAsBroken(link)
  879.  
  880.         link.setAttribute('target', '_blank')
  881.       }
  882.     },
  883.  
  884.     preload(url, onSizeGet) {
  885.       return new Promise((resolve, reject) => {
  886.         const imageObject = new Image()
  887.  
  888.         imageObject.addEventListener('load', () => resolve())
  889.         imageObject.addEventListener('error', reject)
  890.  
  891.         imageObject.src = url
  892.  
  893.         if (onSizeGet) {
  894.           image.getSize(imageObject).then(onSizeGet)
  895.         }
  896.       })
  897.     },
  898.  
  899.     async loadAsBlob(url) {
  900.       const origin = new URL(url).origin
  901.  
  902.       const response = await request({
  903.         url,
  904.         headers: {
  905.           referer: origin,
  906.           origin,
  907.         },
  908.         responseType: 'blob',
  909.       })
  910.  
  911.       return URL.createObjectURL(response.response)
  912.     },
  913.  
  914.     getSize(img) {
  915.       return new Promise((resolve) => {
  916.         const intervalId = setInterval(() => {
  917.           if (img.naturalWidth) {
  918.             clearInterval(intervalId)
  919.             resolve({ width: img.naturalWidth, isLoaded: img.complete })
  920.           }
  921.         }, 10)
  922.       })
  923.     },
  924.  
  925.     setThumbnailSize({ width, isLoaded }) {
  926.       if (!state.currentLink) {
  927.         throw new Error('[image-viewer] currentLink is not set')
  928.       }
  929.  
  930.       const thumbnailURL = state.currentLink.dataset.ivThumbnail
  931.  
  932.       if (!thumbnailURL) {
  933.         throw new Error('[image-viewer] Thumbnail URL is not set')
  934.       }
  935.  
  936.       elements.imageThumbnail.width = width
  937.       elements.imageThumbnail.src = thumbnailURL
  938.  
  939.       if (!isLoaded) {
  940.         elements.container.classList.add(CLASSES.thumbnail)
  941.       }
  942.  
  943.       state.currentLink.dataset.ivWidth = width.toString()
  944.     },
  945.  
  946.     hideThumbnail() {
  947.       elements.imageThumbnail.removeAttribute('width')
  948.       elements.imageThumbnail.src = EMPTY_SRC
  949.     },
  950.  
  951.     hide() {
  952.       document.documentElement.classList.remove(CLASSES.open)
  953.       state.isOpened = false
  954.       state.currentLink = undefined
  955.       elements.image.src = EMPTY_SRC
  956.       events.keyboard.unbind()
  957.     },
  958.  
  959.     next() {
  960.       const currentIndex = state.getCurrentLinkIndex()
  961.       const newIndex =
  962.         currentIndex < state.getLastLinkIndex() ? currentIndex + 1 : 0
  963.  
  964.       image.showInViewer(state.linksSet[newIndex])
  965.     },
  966.  
  967.     previous() {
  968.       const currentIndex = state.getCurrentLinkIndex()
  969.       const newIndex =
  970.         currentIndex === 0 ? state.getLastLinkIndex() : currentIndex - 1
  971.  
  972.       image.showInViewer(state.linksSet[newIndex])
  973.     },
  974.  
  975.     toggleFullHeight() {
  976.       elements.container.classList.toggle(CLASSES.fullHeight)
  977.       elements.buttons.toggleFullHeight.classList.toggle(CLASSES.iconExpand)
  978.       elements.buttons.toggleFullHeight.classList.toggle(CLASSES.iconShrink)
  979.     },
  980.  
  981.     markAsBroken(link) {
  982.       elements.container.classList.replace(
  983.         CLASSES.loadingIcon,
  984.         CLASSES.brokenImageIcon
  985.       )
  986.       elements.container.classList.remove(CLASSES.loading)
  987.       link.classList.replace(CLASSES.zoomIcon, CLASSES.brokenImageIcon)
  988.       link.setAttribute('title', '')
  989.     },
  990.   }
  991.  
  992.   const events = {
  993.     openViewerLinkClick(event) {
  994.       event.preventDefault()
  995.  
  996.       if (state.isFirstClick) {
  997.         create.viewContainer()
  998.         state.isFirstClick = false
  999.       }
  1000.  
  1001.       const link = event.target
  1002.  
  1003.       state.linksSet = $$(SELECTORS.imageLink, link.parentElement ?? undefined)
  1004.       state.isSingle = state.linksSet.length === 1
  1005.  
  1006.       if (!state.isSingle) {
  1007.         elements.imageTotal.textContent = state.linksSet.length.toString()
  1008.       }
  1009.  
  1010.       events.keyboard.bind()
  1011.  
  1012.       image.showInViewer(link)
  1013.     },
  1014.  
  1015.     async openInTabLinkClick(event) {
  1016.       event.preventDefault()
  1017.  
  1018.       const link = event.target
  1019.  
  1020.       link.classList.replace(CLASSES.openInNewIcon, CLASSES.loadingIcon)
  1021.  
  1022.       const imageURL = await image.getFullSizeURL(event.target)
  1023.  
  1024.       link.classList.replace(CLASSES.loadingIcon, CLASSES.openInNewIcon)
  1025.  
  1026.       if (imageURL) {
  1027.         openInTab(imageURL, false)
  1028.       }
  1029.     },
  1030.  
  1031.     keyboard: {
  1032.       bind() {
  1033.         document.addEventListener('keydown', events.keyboard.handler, true)
  1034.       },
  1035.       unbind() {
  1036.         document.removeEventListener('keydown', events.keyboard.handler, true)
  1037.       },
  1038.  
  1039.       handler(event) {
  1040.         if (event.defaultPrevented || event.repeat) {
  1041.           return
  1042.         }
  1043.  
  1044.         switch (event.key) {
  1045.           case 'ArrowRight':
  1046.             image.next()
  1047.             break
  1048.  
  1049.           case 'ArrowLeft':
  1050.             image.previous()
  1051.             break
  1052.  
  1053.           case 'Escape':
  1054.             image.hide()
  1055.             break
  1056.  
  1057.           case ' ':
  1058.             image.toggleFullHeight()
  1059.             break
  1060.  
  1061.           default:
  1062.             return
  1063.         }
  1064.  
  1065.         event.preventDefault()
  1066.       },
  1067.     },
  1068.  
  1069.     mouse(event) {
  1070.       switch (event.type) {
  1071.         case 'mousedown':
  1072.           state.dragging = true
  1073.           state.dragPosition = event.clientY
  1074.           elements.image.classList.add(CLASSES.grabbing)
  1075.           break
  1076.  
  1077.         case 'mousemove':
  1078.           if (state.dragging) {
  1079.             elements.imageContainer.scrollTop -=
  1080.               event.clientY - state.dragPosition
  1081.             state.dragPosition = event.clientY
  1082.           }
  1083.           break
  1084.  
  1085.         case 'mouseup':
  1086.  
  1087.         // fall through
  1088.         case 'mouseout':
  1089.           state.dragging = false
  1090.           elements.image.classList.remove(CLASSES.grabbing)
  1091.           break
  1092.  
  1093.         case 'dblclick':
  1094.           image.toggleFullHeight()
  1095.           break
  1096.  
  1097.         default:
  1098.           return
  1099.       }
  1100.  
  1101.       event.preventDefault()
  1102.     },
  1103.   }
  1104.  
  1105.   const create = {
  1106.     viewContainer() {
  1107.       elements.container = $.create('div', {
  1108.         className: 'iv-image-view iv-icon iv-icon--size-button',
  1109.         contents: [
  1110.           create.viewContainerHeader(),
  1111.           create.viewContainerBody(),
  1112.           create.viewContainerFooter(),
  1113.         ],
  1114.       })
  1115.  
  1116.       document.body.append(elements.container)
  1117.     },
  1118.  
  1119.     viewContainerBody() {
  1120.       elements.image = $.create('img', {
  1121.         className: 'iv-image',
  1122.         events: {
  1123.           'mousedown mouseup mousemove mouseout dblclick': events.mouse,
  1124.         },
  1125.       })
  1126.  
  1127.       elements.imageThumbnail = $.create('img', {
  1128.         className: 'iv-thumbnail',
  1129.       })
  1130.  
  1131.       elements.imageContainer = $.create('div', {
  1132.         className: 'iv-image-view__body',
  1133.         contents: [
  1134.           {
  1135.             tag: 'div',
  1136.             className: 'iv-image-view__backdrop',
  1137.             events: {
  1138.               click: image.hide,
  1139.             },
  1140.           },
  1141.           {
  1142.             tag: 'div',
  1143.             className: 'iv-thumbnail-wrapper',
  1144.             contents: elements.imageThumbnail,
  1145.           },
  1146.           elements.image,
  1147.         ],
  1148.       })
  1149.  
  1150.       return elements.imageContainer
  1151.     },
  1152.  
  1153.     viewContainerHeader() {
  1154.       elements.imageNumber = document.createElement('span')
  1155.       elements.imageTotal = document.createElement('span')
  1156.       const imageNumber = $.create('div', {
  1157.         className: 'iv-image-view__number single-hide',
  1158.         contents: [elements.imageNumber, '/', elements.imageTotal],
  1159.       })
  1160.  
  1161.       elements.buttons.close = create.toolbarButton(
  1162.         'Close (Esc)',
  1163.         'close',
  1164.         image.hide
  1165.       )
  1166.  
  1167.       return {
  1168.         tag: 'div',
  1169.         className: 'iv-image-view__header-wrapper',
  1170.         contents: {
  1171.           tag: 'div',
  1172.           className: 'iv-image-view__header',
  1173.           contents: [imageNumber, elements.buttons.close],
  1174.         },
  1175.       }
  1176.     },
  1177.  
  1178.     viewContainerFooter() {
  1179.       const buttons = elements.buttons
  1180.  
  1181.       buttons.previous = create.toolbarButton(
  1182.         'Previous (←)',
  1183.         'previous',
  1184.         image.previous,
  1185.         'single-hide'
  1186.       )
  1187.       buttons.toggleFullHeight = create.toolbarButton(
  1188.         'Toggle full height (Space)',
  1189.         'expand',
  1190.         image.toggleFullHeight
  1191.       )
  1192.       buttons.next = create.toolbarButton(
  1193.         'Next (→)',
  1194.         'next',
  1195.         image.next,
  1196.         'single-hide'
  1197.       )
  1198.  
  1199.       return {
  1200.         tag: 'div',
  1201.         className: 'iv-image-view__footer-wrapper',
  1202.         contents: {
  1203.           tag: 'div',
  1204.           className: 'iv-image-view__footer',
  1205.           contents: [buttons.previous, buttons.toggleFullHeight, buttons.next],
  1206.         },
  1207.       }
  1208.     },
  1209.  
  1210.     toolbarButton(title, icon, handler, className = '') {
  1211.       return $.create('a', {
  1212.         href: '#',
  1213.         title,
  1214.         className: `iv-icon-button iv-icon iv-icon--type-${icon} ${className}`,
  1215.         events: {
  1216.           click: (event) => {
  1217.             event.preventDefault()
  1218.             handler()
  1219.           },
  1220.         },
  1221.       })
  1222.     },
  1223.   }
  1224.  
  1225.   $.ready().then(async () => {
  1226.     const hostConfig = await initHostConfig()
  1227.  
  1228.     initViewer(hostConfig.enabledHosts)
  1229.   })
  1230. })()