GreasyFork: download script button

If you have a script manager and you want to download some script without installing it, this script will help

目前為 2021-12-24 提交的版本,檢視 最新版本

您需要先安裝使用者腳本管理器擴展,如 TampermonkeyGreasemonkeyViolentmonkey 之後才能安裝該腳本。

You will need to install an extension such as Tampermonkey to install this script.

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyViolentmonkey 後才能安裝該腳本。

您需要先安裝使用者腳本管理器擴充功能,如 TampermonkeyUserscripts 後才能安裝該腳本。

你需要先安裝一款使用者腳本管理器擴展,比如 Tampermonkey,才能安裝此腳本

您需要先安裝使用者腳本管理器擴充功能後才能安裝該腳本。

(我已經安裝了使用者腳本管理器,讓我安裝!)

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展,比如 Stylus,才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

你需要先安裝一款使用者樣式管理器擴展後才能安裝此樣式

(我已經安裝了使用者樣式管理器,讓我安裝!)

// ==UserScript==
// @name          GreasyFork: download script button
// @description   If you have a script manager and you want to download some script without installing it, this script will help
// @author        Konf
// @version       1.2.1
// @namespace     https://greasyfork.org/users/424058
// @icon          https://www.google.com/s2/favicons?domain=greasyfork.org&sz=32
// @include       /^http(s|):\/\/(sleaz|greas)yfork\.org\/[a-zA-Z_-]*\/scripts\/\d.*$/
// @compatible    Chrome
// @compatible    Opera
// @compatible    Firefox
// @run-at        document-end
// @grant         GM_addStyle
// @noframes
// ==/UserScript==

/* jshint esversion: 6 */
/* eslint-disable no-multi-spaces */

(function() {
  'use strict';

  const langStrings = (function() {
    const userLang = location.pathname.split('/')[1];
    const langStringsList = {
      'en': {
        Dl: 'Download without installing',
        failedDl: 'Failed to download the script. ' +
          'More info might be in console'
      },
      'zh-CN': {
        Dl: '下载此脚本',
        failedDl: '无法下载此脚本'
      },
      'ru': {
        Dl: 'Скачать не устанавливая',
        failedDl: 'Не удалось скачать скрипт. ' +
          'Больше информации может быть в консоли'
      }
    };

    return function(id) {
      const userStrings = langStringsList[userLang];
      const enStrings = langStringsList.en;

      return (userStrings || enStrings)[id] || enStrings[id];
    }
  }());

  // https://img.icons8.com/pastel-glyph/64/ffffff/download.png
  // array because tampermonkey can't roll up a string in the code editor
  const downloadIcon = ['data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAE',
  'AAAABACAYAAACqaXHeAAAABmJLR0QA/wD/AP+gvaeTAAABgUlEQVR4nO3ZTU6DUAAE4HnE',
  'k+jWG3TrHVwY3XoEt23cGleamtRtTbyPS3sCV0bXjptHRAIEsM/hZ76kCZRHGaZAGwDMzM',
  'zMbJ6CasMkMwBncXYbQvhSZZEgecEf56ocmWrDAA4L00eqEMoCBsEFqAOouQB1ADUXoA6g',
  '5gLUAdRcgDqAmgtQB1BzAeoAakkLIHlN8pPkDcnWd59IBpK3cd1VyoxJkfwo3PV5KJZAcl',
  'lYtiy8H+LY3HvKjKlPgU1h+hLAuulIiMvWcWzVZ4xL/Dbv+Nsjyax8BMSx96Wxm3jzdLwa',
  'SliVCpjezucqzmuSfKuZJkvXi0moORKqTOebL2tRwnR3PtdQwvR3PldRgmznlc8GA4DTOP',
  'scQqAqy6x1+X8+6Ke5yfNxIE9z6/TN1+XCM4inuQ165ZvHz04DF6AOoOYC1AHUXIA6gNpB',
  'z/UWJK/2muTvFn1W6lvASXyNXpdTYJcsxf69th3Y5QjYAiCA485x/tcLgCd1CDMzMzMbum',
  '8+xtkWw6QCvwAAAABJRU5ErkJggg=='].join('');

  const b = document.createElement('button'); // downloadBtn
  const bIcon = document.createElement('div');
  const bParent = document.body.querySelector('div#install-area');
  const bNeighbour = document.body.querySelector('a.install-help-link');
  const installBtn = document.body.querySelector('a.install-link');

  if (!bParent || !bNeighbour || !installBtn) return;

  GM_addStyle([`
    .tm-dsb-downloadBtn {
      width: 43px;
      height: 38px;
      position: relative;
      padding: 0;
      vertical-align: bottom;
      cursor: pointer;
      border: none;
      outline: none;
      background: #0F750F;
      transition: box-shadow 0.2s;
    }

    .tm-dsb-downloadBtn:hover,
    .tm-dsb-downloadBtn:focus {
      box-shadow: 0 8px 16px 0 rgb(0 0 0 / 20%), 0 6px 20px 0 rgb(0 0 0 / 19%);
    }


    .tm-dsb-downloadBtn__icon {
      position: absolute;
    }

    .tm-dsb-downloadBtn__icon--download {
      width: 35px;
      height: 35px;
      top: 1px;
      left: 4px;
      background: url(${downloadIcon});
      background-size: contain;
    }

    .tm-dsb-downloadBtn__icon--loading,
    .tm-dsb-downloadBtn__icon--loading:after {
      border-radius: 50%;
      width: 16px;
      height: 16px;
    }

    .tm-dsb-downloadBtn__icon--loading {
      top: 6px;
      left: 8px;
      border-top: 5px solid rgba(255, 255, 255, 0.2);
      border-right: 5px solid rgba(255, 255, 255, 0.2);
      border-bottom: 5px solid rgba(255, 255, 255, 0.2);
      border-left: 5px solid #ffffff;
      transform: translateZ(0);
      animation: loading 1.1s infinite linear;
    }

    @keyframes loading {
      0% {
        transform: rotate(0deg);
      }
      100% {
        transform: rotate(360deg);
      }
    }
  `][0]);

  b.title = langStrings('Dl');
  b.className = 'tm-dsb-downloadBtn';
  bIcon.className = 'tm-dsb-downloadBtn__icon tm-dsb-downloadBtn__icon--download';
  bNeighbour.style.position = 'relative'; // shadow bugfix
  bParent.insertBefore(b, bNeighbour);
  b.appendChild(bIcon);

  let fetchingDelay = false;

  b.addEventListener('click', () => {
    setTimeout(() => {
      if (b === document.activeElement) b.blur();
    }, 250);

    if (fetchingDelay) return;
    fetchingDelay = true;
    bIcon.className = 'tm-dsb-downloadBtn__icon tm-dsb-downloadBtn__icon--loading';

    fetch(installBtn.href)
      .then(res => res.blob())
      .then(blob => {
        const url = window.URL.createObjectURL(blob);
        const a = document.createElement('a');

        a.href = url;
        a.download = `${installBtn.dataset.scriptName || Date.now()}.user.js`;
        document.body.appendChild(a); // needed due to firefox bug
        a.click();
        a.remove();

        setTimeout(closeFetchUX, 300);
        window.URL.revokeObjectURL(url);
      })
      .catch(e => {
        setTimeout(closeFetchUX, 300);
        alert(`${langStrings('failedDl')}: \n${e}`);
     });
  });


  // utils -------------------------------------------------------------

  function closeFetchUX() {
    fetchingDelay = false;
    bIcon.className = 'tm-dsb-downloadBtn__icon tm-dsb-downloadBtn__icon--download';
  }

  // --------------------------------------------------------------------

})();