GreasyFork: download script button

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

当前为 2021-11-30 提交的版本,查看 最新版本

您需要先安装一个扩展,例如 篡改猴Greasemonkey暴力猴,之后才能安装此脚本。

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

您需要先安装一个扩展,例如 篡改猴暴力猴,之后才能安装此脚本。

您需要先安装一个扩展,例如 篡改猴Userscripts ,之后才能安装此脚本。

您需要先安装一款用户脚本管理器扩展,例如 Tampermonkey,才能安装此脚本。

您需要先安装用户脚本管理器扩展后才能安装此脚本。

(我已经安装了用户脚本管理器,让我安装!)

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展,比如 Stylus,才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

您需要先安装一款用户样式管理器扩展后才能安装此样式。

(我已经安装了用户样式管理器,让我安装!)

// ==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
// @namespace    https://greatest.deepsurf.us/users/424058
// @version      1.1.1
// @author       Konf
// @match        https://greatest.deepsurf.us
// @include      /^http(s|):\/\/greatest.deepsurf.us\/[a-zA-Z_-]*\/scripts\/\d.*$/
// @run-at       document-end
// @resource     iconDownload https://img.icons8.com/pastel-glyph/64/ffffff/download.png
// @compatible   Chrome
// @compatible   Opera
// @compatible   Firefox
// @grant        GM_getResourceUrl
// @grant        GM.getResourceUrl
// @noframes
// ==/UserScript==

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

(function() {
  'use strict';

  const userLang = location.pathname.split('/')[1];
  const langStringsList = {
    'en': {
      Dl: 'Download without installing',
      unableDl: 'Unable to download the script'
    },
    'zh-CN': {
      Dl: '下载此脚本',
      unableDl: '无法下载此脚本'
    },
    'ru': {
      Dl: 'Скачать не устанавливая',
      unableDl: 'Не удалось скачать скрипт'
    }
  };
  const langStrings = langStringsList[userLang] || langStringsList.en;

  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;

  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;

  (GM.getResourceUrl || GM_getResourceUrl)('iconDownload')
  .then(downloadIconUrl => {
    addCSS(`
      .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(${downloadIconUrl});
        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;
        text-indent: -9999em;
        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;
        -webkit-transform: translateZ(0);
        -ms-transform: translateZ(0);
        transform: translateZ(0);
        -webkit-animation: loading 1.1s infinite linear;
        animation: loading 1.1s infinite linear;
      }

      @-webkit-keyframes loading {
        0% {
          -webkit-transform: rotate(0deg);
          transform: rotate(0deg);
        }
        100% {
          -webkit-transform: rotate(360deg);
          transform: rotate(360deg);
        }
      }

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

  b.addEventListener('click', () => {
    setTimeout(() => {
      if (b === document.activeElement) document.activeElement.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}.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(`${langStrings.unableDl}: \n${e}`);
     });
  });


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

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

  function addCSS(cssCode) {
    const styleEl = document.createElement("style");
    styleEl.type = "text/css";

    if (styleEl.styleSheet) {
      styleEl.styleSheet.cssText = cssCode;
    } else {
      styleEl.appendChild(document.createTextNode(cssCode));
    }

    document.getElementsByTagName("head")[0].appendChild(styleEl);

    return styleEl;
  }

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

})();