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Double-click Image Downloader

Double-click images to download them.

Как установить

Чтобы установить этот скрипт, вы сначала должны установить расширение браузера, например Tampermonkey, Greasemonkey или Violentmonkey.

Чтобы установить этот скрипт, вы сначала должны установить расширение браузера, например Tampermonkey или Violentmonkey.

Чтобы установить этот скрипт, вы сначала должны установить расширение браузера, например Tampermonkey или Violentmonkey.

Чтобы установить этот скрипт, вы сначала должны установить расширение браузера, например Tampermonkey или Userscripts.

Чтобы установить этот скрипт, сначала вы должны установить расширение браузера, например Tampermonkey.

Чтобы установить этот скрипт, вы должны установить расширение — менеджер скриптов.

(у меня уже есть менеджер скриптов, дайте мне установить скрипт!)

Как установить

Чтобы установить этот стиль, сначала вы должны установить расширение браузера, например Stylus.

Чтобы установить этот стиль, сначала вы должны установить расширение браузера, например Stylus.

Чтобы установить этот стиль, сначала вы должны установить расширение браузера, например Stylus.

Чтобы установить этот стиль, сначала вы должны установить расширение — менеджер стилей.

Чтобы установить этот стиль, сначала вы должны установить расширение — менеджер стилей.

Чтобы установить этот стиль, сначала вы должны установить расширение — менеджер стилей.

(у меня уже есть менеджер стилей, дайте мне установить скрипт!) 

// ==UserScript==
// @name        Double-click Image Downloader
// @namespace   leaumar
// @match       *://*/*
// @grant       GM.download
// @grant       GM.xmlHttpRequest
// @connect     *
// @version     3
// @author      [email protected]
// @description Double-click images to download them.
// @license     MPL-2.0
// @icon        data:image/png;base64,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
// ==/UserScript==

class HttpError extends Error {
  constructor(verb, response) {
    super(`HTTP request ${verb}.`, {
      cause: response
    });
  }
}

function httpRequest(method, url) {
  return new Promise((resolve, reject) => {
    function fail(verb) {
      return error => reject(new HttpError(verb, error));
    }

    GM.xmlHttpRequest({
      url: url.href,
      onload: resolve,
      onerror: fail('errored'),
      onabort: fail('aborted'),
      ontimeout: fail('timed out'),
      responseType: 'blob',
    });
  });
}

function httpDownload(url, name) {
  return new Promise((resolve, reject) => {
    function fail(verb) {
      return error => reject(new HttpError(verb, error));
    }

    GM.download({
      url: url.href,
      name,
      onload: () => resolve(),
      onerror: fail('errored'),
      onabort: fail('aborted'),
      ontimeout: fail('timed out'),
      responseType: 'blob',
    });
  });
}

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

// from the greasemonkey docs
const lineSeparator = '\r\n';
const headerSeparator = ": ";

// is it still the 90s?
function parseHeaders(headersString) {
  return headersString.split(lineSeparator).reduce((accumulator, line) => {
    const pivot = line.indexOf(headerSeparator);
    const name = line.slice(0, pivot).trim().toLowerCase();
    const value = line.slice(pivot + headerSeparator.length).trim();
    accumulator[name] = value;
    return accumulator;
  }, {});
}

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

function filterFilename(name) {
  // foo.jpg
  return /^.+\.(?:jpe?g|png|gif|webp)$/iu.exec(name)?.[0];
}

async function queryFilename(url) {
  const response = await httpRequest('HEAD', url);
  const disposition = parseHeaders(response.responseHeaders)['content-disposition'];
  if (disposition != null) {
    // naive approach, but proper parsing is WAY overkill
    // attachment; filename="foo.jpg" -> foo.jpg
    const serverName = /^(?:attachment|inline)\s*;\s*filename="([^"]+)"/iu.exec(disposition)?.[1];
    if (serverName != null) {
      return filterFilename(serverName);
    }
  }
}

function readFilename(url) {
  const branch = url.pathname;
  const leaf = branch.slice(branch.lastIndexOf('/') + 1);
  return filterFilename(leaf);
}

function sleep(millis) {
    return new Promise(resolve => setTimeout(resolve, millis));
}

async function downloadImage(url, name, image) {
  const opacity = image.style.opacity ?? 1;

  image.style.opacity = 0.5;
  await Promise.all([httpDownload(url, name), sleep(100)]);
  image.style.opacity = opacity;
}

async function onDoubleClick(dblClick) {
  if (dblClick.target.nodeName === 'IMG') {
    const imageElement = dblClick.target;
    const url = new URL(imageElement.src, location.origin);
    const name = readFilename(url) ?? await queryFilename(url);
    if (name == null) {
      throw new Error('Could not determine a filename.');
    }
    await downloadImage(url, name, imageElement);
  }
}

(function main() {
  document.body.addEventListener('dblclick', dblClick => onDoubleClick(dblClick).catch(console.error));
})();