xkcd_keyboard_nav.user.js

   1 /* xkcd keyboard nav - Navigate xkcd with your keyboard
   2  *
   3  * Copyright (c) 2015 Adrian Iain Lam <adrianiainlam@gmail.com>
   4  *
   5  * This program is free software. It comes without any warranty, to
   6  * the extent permitted by applicable law. You can redistribute it
   7  * and/or modify it under the terms of the Do What The Fuck You Want
   8  * To Public License, Version 2, as published by Sam Hocevar. See
   9  * http://www.wtfpl.net/txt/copying/ for more details.
  10  *
  11  * +---------------+----------------+
  12  * |   Key         |   Navigates to |
  13  * +---------------+----------------+
  14  * | [right arrow] |     next comic |
  15  * | [left arrow]  | previous comic |
  16  * | [f]           |    first comic |
  17  * | [l]           |     last comic |
  18  * | [r]           |   random comic |
  19  * +---------------+----------------+
  20  *
  21  * This script uses keyboardEvent.key, which may not be supported by
  22  * your browser. I have no intention to write a compatible script
  23  * with keyboardEvent.keyCode as it is deprecated anyway.
  24  */
  25
  26 // ==UserScript==
  27 // @name        xkcd keyboard nav
  28 // @namespace   https://github.com/adrianiainlam
  29 // @description Navigate xkcd with your keyboard
  30 // @version     1.0.-1
  31 // @downloadURL
  32 // @updateURL
  33 // @include     /^https?://xkcd\.com(/[0-9]+)?/?$/
  34 // @grant       none
  35 // ==/UserScript==
  36
  37 function showTitleText() {
  38   var elem    = document.getElementById("comic");
  39   var child   = elem.children[0];
  40   var newnode = document.createElement("p");
  41   if(child instanceof HTMLImageElement) {
  42       newnode.innerHTML = child.title;
  43   } else if(child instanceof HTMLAnchorElement && child.children[0] instanceof HTMLImageElement) {
  44       newnode.innerHTML = child.children[0].title;
  45   } else {
  46       console.log("Title text not found by this script. Please file a bug report with URL");
  47   }
  48   elem.appendChild(newnode);
  49 }
  50
  51 document.body.addEventListener("keypress", function(e) {
  52   var navList = document.getElementsByClassName("comicNav")[0].children;
  53   if(!e.altKey && !e.ctrlKey && !e.metaKey && !e.shiftKey) {
  54     switch(e.key) {
  55       case "ArrowLeft": // prev
  56       case "Left": // deprecated
  57         document.location.href = navList[1].firstChild.getAttribute("href");
  58         break;
  59       case "ArrowRight": // next
  60       case "Right": // deprecated
  61         document.location.href = navList[3].firstChild.getAttribute("href");
  62         break;
  63       case "r": // random
  64         document.location.href = navList[2].firstChild.getAttribute("href");
  65         break;
  66       case "f": // first
  67         document.location.href = navList[0].firstChild.getAttribute("href");
  68         break;
  69       case "l":  // last
  70         document.location.href = navList[4].firstChild.getAttribute("href");
  71         break;
  72     }
  73   }
  74 });
  75
  76 showTitleText();