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Get of extension from Chrome-WebStore [chrome.google.com]

Add button for get .crx of extension or theme from Chrome-WebStore

  1. // ==UserScript==
  2. // @name         Get of extension from Chrome-WebStore [chrome.google.com]
  3. // @version      0.2
  4. // @description  Add button for get .crx of extension or theme from Chrome-WebStore
  5. // @description  Bookmartklet version: http://bit.ly/get_crx_chrome_bookmarklet
  6. // @author       Vyacheslav Vasiliev
  7. // @include      *chrome.google.com/webstore/*
  8. // @namespace    132-148-320
  9. // @copyright    © 2017, Vyacheslav Vasiliev (vyach.vasiliev\аt\gmail\dоt\com)
  10. // @run-at       document-end
  11. // ==/UserScript==
  12.  
  13.  
  14. (function () {
  15.     var install_button = document.querySelector('[role="dialog"] div[role="button"][aria-label]');
  16.     if (install_button) {
  17.         var install_button_classes = install_button.className;
  18.         var get_crx_button = document.createElement('a');
  19.         get_crx_button.className = install_button_classes;
  20.         get_crx_button = install_button.parentNode.insertBefore(get_crx_button, install_button);
  21.         get_crx_button.innerText = "Get .crx file";
  22.         get_crx_button.id = 'get-crx-file';
  23.         var crx_param = getCRXParam();
  24.         var crx_name = crx_param[0];
  25.         var crx_url_download = crx_param[1];
  26.         get_crx_button.setAttribute('download', crx_name+'.crx');
  27.         get_crx_button.setAttribute('href', crx_url_download);
  28.  
  29.         // add style for button
  30.         var get_crx_button_style = '#get-crx-file {margin-right:2px; } #get-crx-file:hover {opacity:0.8; }';
  31.         addStyle(get_crx_button_style);
  32.         // if not added style
  33.         get_crx_button.style.marginRight = "2px";
  34.     }
  35.     function getCRXParam() {
  36.         // console.info('press getCRX');
  37.         var crx_url_download = 'https://clients2.google.com/service/update2/crx?response=redirect&prodversion=49.0&x=id%3D%ID_EXTENSION%%26installsource%3Dondemand%26uc';
  38.         var id_extension = window.location.pathname.split('/').slice(-1);
  39.         if (id_extension) {
  40.             crx_url_download = crx_url_download.replace('%ID_EXTENSION%', id_extension);
  41.             // console.info('Build get .crx of url: %s', crx_url_download);
  42.         }
  43.         var crx_name = document.title.split('-')[0].trim();
  44.         if(!crx_name) crx_name = id_extension;
  45.         return [crx_name, crx_url_download];
  46.     }
  47.     function addStyle(css) {
  48.         var style = document.createElement('style');
  49.         style.type = 'text/css';
  50.         if (style.styleSheet) {
  51.             style.styleSheet.cssText = css;
  52.         } else {
  53.             style.appendChild(document.createTextNode(css));
  54.         }
  55.     }
  56. })();