Enable dictionaries on Kindle online reader

kindle_hack.js

// https://learnoutlive.com/german-english-dictionary-kindle-cloud-reader/
javascript: (function() {
  /* based on ACRExtensions via https://github.com/binarycrafts/ACRExtensions */

  var w = null;
  var kDoc = null;
  var kObj = null;

  if (typeof window.KindleReaderContextMenu !== 'undefined') {
    w = window;
  } else if (window.length) {
    for (var i = 0; i < window.length; i++) {
      if (typeof window[i].KindleReaderContextMenu !== 'undefined') {
        w = window[i];
        break;
      }
    }
  }

  if (typeof w === 'object') {
    kObj = w.KindleReaderContextMenu;
    kDoc = w.document;

    if (typeof kObj.ACRExtensions === 'undefined') {
      kObj.ACRExtensions = true;
      var oldMethod = kObj.show;
      kObj.show = function() {
        var res = oldMethod.apply(kObj, arguments);
        var txtDoc = null;
        var r = null;

        if (
          typeof arguments[3] !== 'undefined' &&
          typeof arguments[3]['start'] !== 'undefined'
        ) {
          var sId = arguments[3]['start'];
          var eId = arguments[3]['end'];

          $('iframe', kDoc).each(function(j, textIframe) {
            var textIFrameDoc = $(textIframe)
              .contents()
              .get(0);
            if ($('#' + sId, textIFrameDoc).get(0)) {
              txtDoc = textIFrameDoc;
              return false;
            }
          });

          if (txtDoc) {
            r = txtDoc.createRange();
            r.setStartBefore($('#' + sId, txtDoc).get(0));
            r.setEndAfter($('#' + eId, txtDoc).get(0));
          }
        }

        $('#ACRExtensions_copyB_sep', kDoc).remove();
        $('#ACRExtensions_copyB', kDoc).remove();
        $('#ACRExtensions_copyC', kDoc).remove();
        var styles = $(
          '<style>.spinner, .dictionary.i18n.expanded {display:none !important;} div#kindleReader_menu_contextMenu { max-height: 35px;}</style>'
        );
        var sepEl = $(
          '<div id="ACRExtensions_copyB_sep" class="kindle_menu_separator"></div>'
        );
        var copyB = $(
          '<div id="ACRExtensions_copyB" class="kindle_menu_button button_enabled ui-corner-left">dict.cc</div>'
        );
        var copyC = $(
          '<div id="ACRExtensions_copyC" class="kindle_menu_button button_enabled ui-corner-left">Google</div>'
        );
        $('#kindle_menu_border', kDoc)
          .append(sepEl)
          .append(copyB)
          .append(sepEl)
          .append(copyC)
          .append(styles);
        setTimeout(function() {
          sepEl.show();
          copyB.removeClass('button_hidden');
          copyC.removeClass('button_hidden');
        }, 1);
        $('#ACRExtensions_copyB', kDoc).click(function(evt) {
          if (r) {
            var newW = window.open(
              'http://pocket.dict.cc/?s=' + r,
              'dict.cc',
              'height=400,width=448,location=0,menubar=0,scrollbars=1,toolbar=0'
            );
          }
        });

        $('#ACRExtensions_copyC', kDoc).click(function(evt) {
          if (r) {
            var newW = window.open(
              'https://translate.google.com/?hl=en#auto/en/' + r,
              'Google Translate',
              'height=400,width=776,location=0,menubar=0,scrollbars=1,toolbar=0'
            );
          }
        });

        return res;
      };

      alert('Kindle Translator Extension is now active.');
    } else {
      alert('Kindle Translator Extension is already active.');
    }
  } else {
    alert(
      'Error: Kindle Translator Extension is not active. The Amazon Cloud Reader window could not be found.'
    );
  }
})();