transmission-web-magnets.js

// ==UserScript==
// @name         Tranmsmission Web Magnets
// @version      1.0
// @description  Adds "Copy Magnet Link" option to Transmission Web
// @author       pixelomer
// @match        *://*:9091/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function(){
  var sendRequestReal = TransmissionRemote.prototype.sendRequest;
  TransmissionRemote.prototype.sendRequest = function(data, callback, context, async) {
    if (
      (data != null) &&
      (data.method === "torrent-get") &&
      (data.arguments != null) &&
      Array.isArray(data.arguments.fields)
    ) {
      data.arguments.fields.push("magnetLink");
    }
    sendRequestReal.apply(this, arguments);
  }
  
  var contextMenu = document.getElementById("torrent_context_menu");
  if (contextMenu != null) {
    var verifyItem = null;
    var children = contextMenu.children;
    for (var i=0; i<children.length; i++) {
      if (children[i].getAttribute("data-command") === "verify") {
        verifyItem = children[i];
        break;
      }
    }
    if (verifyItem != null) {
      var newItem = verifyItem.cloneNode(false);
      newItem.innerHTML = "Copy Magnet Link";
      newItem.setAttribute("data-command", "copy-magnet");
      newItem.setAttribute("id", "ui-id-copy-magnet");
      contextMenu.insertBefore(newItem, verifyItem.nextSibling);
      
      var contextmenuReal = $.prototype.contextmenu;
      $.prototype.contextmenu = function(object) {
        if (this.selector === "ul#torrent_list") {
          var selectReal = object.select;
          object.select = function(event, ui) {
            if (ui.cmd === "copy-magnet") {
              var textArea = document.createElement("textarea");
              textArea.style.top = "0";
              textArea.style.left = "0";
              textArea.style.position = "fixed";
              textArea.value = "";
              
              var selectedTorrents = window.transmission.getSelectedTorrents();
              for (var i=0; i<selectedTorrents.length; i++) {
                textArea.value += selectedTorrents[i].fields["magnetLink"] + "\n";
              }
              
              document.body.appendChild(textArea);
              textArea.focus();
              textArea.setSelectionRange(0, textArea.value.length - 1);
              try {
                document.execCommand("copy");
              }
              catch (err) {
                console.error("document.execCommand(\"copy\") didn't work.\n", err);
              }
              document.body.removeChild(textArea);
            }
            else {
              selectReal.apply(this, arguments);
            }
          };
        }
        contextmenuReal.apply(this, arguments);
      };
    }
  }
})();