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mmmturkeybacon Scroll To Workspace

When a HIT has been accepted, this script scrolls the mturk workspace to the

当前为 2014-07-08 提交的版本，查看 最新版本。

  1. // ==UserScript==
  2. // @name        mmmturkeybacon Scroll To Workspace
  3. // @author      mmmturkeybacon
  4. // @description When a HIT has been accepted, this script scrolls the mturk workspace to the
  5. //              top of the window.
  6. //              When a HIT is being previewed, this script scrolls the 'Accept HIT' button to
  7. //              the top of the window, unless there is a CAPTCHA.
  8. //              Whenever a HIT is previewed or accepted, this script sets the iframe height
  9. //              equal to the browser's viewport height to ensure proper scrolling and gives
  10. //              focus to the iframe.
  11. // @namespace   http://userscripts.org/users/523367
  12. // @match       https://*.mturk.com/mturk/preview*
  13. // @match       https://*.mturk.com/mturk/accept*
  14. // @match       https://*.mturk.com/mturk/continue*
  15. // @match       https://*.mturk.com/mturk/submit*
  16. // @match       https://*.mturk.com/mturk/return*
  17. // @require     http://code.jquery.com/jquery-latest.min.js
  18. // @version     3.04
  19. // @grant       none
  20. // ==/UserScript==
  21.  
  22. $(document).ready(function ()
  23. {   
  24.     var is_a_HIT = document.evaluate("//input[@type='hidden' and @name='isAccepted']", document, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
  25.     if (is_a_HIT == true)
  26.     {
  27.         var workspace;
  28.         var iframe = document.getElementsByTagName('iframe')[0];
  29.         var hit_wrapper = document.evaluate("//div [@id='hit-wrapper']", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  30.         var isAccepted = document.evaluate("//input[@type='hidden' and @name='isAccepted' and @value='true']", document, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
  31.         var captcha = document.evaluate("//input[@name='userCaptchaResponse']", document, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
  32.  
  33.         if (iframe)
  34.         {
  35.             iframe.height = window.innerHeight;
  36.             $(window).load(function(){iframe.focus();});
  37.             workspace = iframe;
  38.         }
  39.         else if (hit_wrapper)
  40.         {
  41.             /* Changing the hit_wrapper height doesn't work correctly because
  42.              * this script runs before all images are are loaded. This makes it
  43.              * impossible to know what the final hit_wrapper height will be and
  44.              * setting the hit_wrapper height before images are loaded may 
  45.              * result in a hit_wrapper that is too small.
  46.              * Padding is added to the end of the page to ensure proper scrolling.
  47.              */
  48.             var hit_wrapper_ypos = hit_wrapper.getBoundingClientRect().top;
  49.             var pad = hit_wrapper_ypos+window.innerHeight-$(document).height();
  50.             if (pad > 0)
  51.             {
  52.                 var pad_div = document.createElement("div");
  53.                 pad_div.style.height = pad;
  54.                 document.body.appendChild(pad_div);
  55.             }
  56.             workspace = hit_wrapper;
  57.         }
  58.         
  59.         // If isAccepted is true then there is almost certainly not a CAPTCHA but I'm not positive and I can't test for that
  60.         // case, so it's better to be safe than sorry.
  61.         if (captcha == false)
  62.         {
  63.             if (isAccepted == true && workspace)
  64.             { // HIT accepted
  65.                 workspace.scrollIntoView();
  66.                 
  67.                 //if (window.chrome)
  68.                 //{
  69.                 //    /* This solves the problem of chrome scrolling to the last position it
  70.                 //     * remembers. However, if a page is loaded that chrome doesn't remember
  71.                 //     * a position for this will snap back to the top of the workspace the
  72.                 //     * first time the user scrolls, which is not an ideal solution and why
  73.                 //     * this is commented out.
  74.                 //     * A timeout of 0 works, but it is jarring and looks buggy.
  75.                 //     */
  76.                 //    $(window).load(function(){window.onscroll = function(){ window.onscroll=null; setTimeout( function(){workspace.scrollIntoView();}, 500 ); }});
  77.                 //}
  78.             }
  79.             else
  80.             { // previewing HIT
  81.                 var timer = document.evaluate("//span[@id='theTime' and @class='title_orange_text' and @style='text-align: right;']", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
  82.                 timer.scrollIntoView();
  83.                 //if (window.chrome)
  84.                 //{
  85.                 //    $(window).load(window.onscroll = function(){ window.onscroll=null; setTimeout( function(){timer.scrollIntoView();}, 500);});
  86.                 //}
  87.             }
  88.         }
  89.     }
  90. });