Double-click Image Downloader

Double-click images to download them.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey, Greasemonkey of Violentmonkey.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey of Violentmonkey.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey of Violentmonkey.

Voor het installeren van scripts heb je een extensie nodig, zoals Tampermonkey of Userscripts.

Voor het installeren van scripts heb je een extensie nodig, zoals {tampermonkey_link:Tampermonkey}.

Voor het installeren van scripts heb je een gebruikersscriptbeheerder nodig.

(Ik heb al een user script manager, laat me het downloaden!)

Voor het installeren van gebruikersstijlen heb je een extensie nodig, zoals {stylus_link:Stylus}.

Voor het installeren van gebruikersstijlen heb je een extensie nodig, zoals {stylus_link:Stylus}.

Voor het installeren van gebruikersstijlen heb je een extensie nodig, zoals {stylus_link:Stylus}.

Voor het installeren van gebruikersstijlen heb je een gebruikersstijlbeheerder nodig.

Voor het installeren van gebruikersstijlen heb je een gebruikersstijlbeheerder nodig.

Voor het installeren van gebruikersstijlen heb je een gebruikersstijlbeheerder nodig.

(Ik heb al een beheerder - laat me doorgaan met de installatie!)

// ==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));
})();