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etherscan-helper

Gadget for etherscan.io

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  1. // ==UserScript==
  2. // @name         etherscan-helper
  3. // @version      0.0.1
  4. // @description  Gadget for etherscan.io
  5. // @namespace    userscripts.henryfour.com
  6. // @homepageURL  https://github.com/henryfour/userscripts
  7. // @supportURL   https://github.com/henryfour/userscripts/issues
  8. // @author       HenryFour
  9. // @copyright    2020+, HenryFour
  10. // @license      MIT
  11. //
  12. // @run-at       document-start
  13. // @grant        GM_addStyle
  14. // @grant        GM_getValue
  15. // @grant        GM_setValue
  16. // @match        https://cn.etherscan.com/*
  17. // @match        https://*.etherscan.io/*
  18. // @match        https://*.bscscan.com/*
  19. // @match        https://*.hecoinfo.com/*
  20. // @match        https://*.ftmscan.com/*
  21. // @match        https://*.polygonscan.com/*
  22. // @match        https://*.arbiscan.io/*
  23. // @match        https://*.snowtrace.io/*
  24. //
  25. // @icon         https://etherscan.io/images/favicon2.ico
  26. // @require      https://cdn.bootcss.com/jquery/2.2.4/jquery.min.js
  27. // ==/UserScript==
  28.  
  29. GM_addStyle(
  30.   // reference: https://gradientbuttons.colorion.co/
  31.   ".btn-grad {background-image: linear-gradient(to right, #E55D87 0%, #5FC3E4 51%, #E55D87 100%)}"
  32.   + ".btn-grad {margin: 10px; padding: 10px 20px; text-align: center; text-transform: uppercase; transition: 0.5s; background-size: 200% auto; color: white; box-shadow: 0 0 20px #eee; border-radius: 10px; display: block; border-width: 0;}"
  33.   + ".btn-grad:hover { background-position: right center; color: #fff; text-decoration: none; }"
  34.   + ".auto-jump { margin: 10px; padding: 4px; color: #fff; background-color: #21325b; }"
  35.   + ".auto-jump label { margin: 0 0 0 4px; }"
  36. );
  37.  
  38. (function () {
  39.   'use strict';
  40.  
  41.   const HostCN = "cn.etherscan.com";
  42.   const HostEN = "etherscan.io";
  43.  
  44.   const KeyAutoI18n = "etherscan.auto-jump";
  45.   function getAutoI18n() {
  46.     return GM_getValue(KeyAutoI18n, "");
  47.   }
  48.  
  49.   function isHostEN() {
  50.     return window.location.hostname == HostEN;
  51.   }
  52.   function isHostCN() {
  53.     return window.location.hostname == HostCN;
  54.   }
  55.  
  56.   function jumpToHost(toHost) {
  57.     if (toHost && window.location.hostname != toHost) {
  58.       if (getAutoI18n()) {
  59.         setAutoI18n(toHost);
  60.       }
  61.       let jumpUrl = window.location.href.replace(window.location.hostname, toHost);
  62.       window.location.href = jumpUrl;
  63.       return true;
  64.     }
  65.     return false;
  66.   }
  67.  
  68.  
  69.   function setAutoI18n(toHost) {
  70.     GM_setValue(KeyAutoI18n, toHost);
  71.   }
  72.  
  73.   function tryAutoI18n() {
  74.     let toHost = getAutoI18n();
  75.     switch (toHost) {
  76.       case HostEN:
  77.         return isHostCN() && jumpToHost(toHost);
  78.       case HostCN:
  79.         return isHostEN() && jumpToHost(toHost);
  80.       default:
  81.         return false;
  82.     }
  83.   }
  84.  
  85.   // auto jump before document loaded
  86.   if (tryAutoI18n()) {
  87.     return;
  88.   }
  89.  
  90.   function toI18n(parent) {
  91.     let btnText, toHost, checkText;
  92.     if (isHostEN()) {
  93.       btnText = '转到中文站';
  94.       toHost = HostCN;
  95.       checkText = '自动跳转';
  96.     } else if (isHostCN()) {
  97.       btnText = 'Goto EN';
  98.       toHost = HostEN;
  99.       checkText = 'Auto Jump';
  100.     } else {
  101.       // no jump for testnets
  102.       return;
  103.     }
  104.     addButton(parent, btnText, () => { jumpToHost(toHost) }, 'btn-grad');
  105.     addCheckbox(parent, checkText, (checked) => { setAutoI18n(checked ? toHost : ""); });
  106.   }
  107.  
  108.   // Add button to view code in deth.net
  109.   function toCodeViewer(parent) {
  110.     // https://github.com/dethcrypto/ethereum-code-viewer/blob/main/docs/supported-explorers.md
  111.     let url = location.href;
  112.     if (url.indexOf(".io/") > 0) {
  113.         url = url.replace(".io/", ".deth.net/");
  114.     } else if (url.indexOf(".com") > 0) {
  115.         url = url.replace(".com/", ".deth.net/");
  116.     }
  117.     addButton(parent, 'deth.net', () => window.open(url), 'btn-grad');
  118.   }
  119.  
  120.   window.addEventListener('load', () => {
  121.     // Hide username for screenshots sharing
  122.     let profile = document.getElementById("dropdownUser");
  123.     if (profile) {
  124.       profile.childNodes[1].textContent = "My Profile";
  125.     }
  126.  
  127.     // floating functions
  128.     const floatingArea = addFloatingArea();
  129.     toCodeViewer(floatingArea);
  130.     toI18n(floatingArea);
  131.   })
  132.  
  133.   function addButton(parent, text, onclick, cls, styles) {
  134.     let button = document.createElement('button');
  135.     button.innerHTML = text;
  136.     button.onclick = onclick;
  137.     button.className = cls;
  138.     styles = styles || {}
  139.     Object.keys(styles).forEach(key => button.style[key] = styles[key]);
  140.     parent.appendChild(button);
  141.     return button
  142.   }
  143.  
  144.   function addCheckbox(parent, text, cb, cls) {
  145.     let div = document.createElement('div');
  146.     div.className = 'auto-jump';
  147.     let input = document.createElement('input');
  148.     input.type = 'checkbox';
  149.     input.id = 'auto-jump-check';
  150.     input.checked = getAutoI18n() ? true : false;
  151.     input.value = true;
  152.     input.onclick = () => { cb(input.checked); };
  153.     let label = document.createElement('label');
  154.     label.innerHTML = text;
  155.     label.setAttribute('for', input.id);
  156.     div.append(input, label);
  157.     parent.appendChild(div);
  158.   }
  159.  
  160.   function addFloatingArea() {
  161.     let div = document.createElement('div');
  162.     let styles = { position: 'fixed', top: '20%', right: '1%', 'z-index': 9999 };
  163.     Object.keys(styles).forEach(key => div.style[key] = styles[key]);
  164.     document.body.appendChild(div);
  165.     return div;
  166.   }
  167. })();