When a HIT has been accepted, this script scrolls the mturk workspace to the
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// ==UserScript==
// @name mmmturkeybacon Scroll To Workspace
// @author mmmturkeybacon
// @description When a HIT has been accepted, this script scrolls the mturk workspace to the
// top of the window.
// When a HIT is being previewed, this script scrolls the 'Accept HIT' button to
// the top of the window, unless there is a CAPTCHA.
// Whenever a HIT is previewed or accepted, this script sets the iframe height
// equal to the browser's viewport height to ensure proper scrolling and gives
// focus to the iframe.
// @namespace http://userscripts.org/users/523367
// @match https://*.mturk.com/mturk/preview*
// @match https://*.mturk.com/mturk/accept*
// @match https://*.mturk.com/mturk/continue*
// @match https://*.mturk.com/mturk/submit*
// @match https://*.mturk.com/mturk/return*
// @require http://code.jquery.com/jquery-latest.min.js
// @version 3.04
// @grant none
// ==/UserScript==
$(document).ready(function ()
{
var is_a_HIT = document.evaluate("//input[@type='hidden' and @name='isAccepted']", document, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
if (is_a_HIT == true)
{
var workspace;
var iframe = document.getElementsByTagName('iframe')[0];
var hit_wrapper = document.evaluate("//div [@id='hit-wrapper']", document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
var isAccepted = document.evaluate("//input[@type='hidden' and @name='isAccepted' and @value='true']", document, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
var captcha = document.evaluate("//input[@name='userCaptchaResponse']", document, null, XPathResult.BOOLEAN_TYPE, null).booleanValue;
if (iframe)
{
iframe.height = window.innerHeight;
$(window).load(function(){iframe.focus();});
workspace = iframe;
}
else if (hit_wrapper)
{
/* Changing the hit_wrapper height doesn't work correctly because
* this script runs before all images are are loaded. This makes it
* impossible to know what the final hit_wrapper height will be and
* setting the hit_wrapper height before images are loaded may
* result in a hit_wrapper that is too small.
* Padding is added to the end of the page to ensure proper scrolling.
*/
var hit_wrapper_ypos = hit_wrapper.getBoundingClientRect().top;
var pad = hit_wrapper_ypos+window.innerHeight-$(document).height();
if (pad > 0)
{
var pad_div = document.createElement("div");
pad_div.style.height = pad;
document.body.appendChild(pad_div);
}
workspace = hit_wrapper;
}
// If isAccepted is true then there is almost certainly not a CAPTCHA but I'm not positive and I can't test for that
// case, so it's better to be safe than sorry.
if (captcha == false)
{
if (isAccepted == true && workspace)
{ // HIT accepted
workspace.scrollIntoView();
//if (window.chrome)
//{
// /* This solves the problem of chrome scrolling to the last position it
// * remembers. However, if a page is loaded that chrome doesn't remember
// * a position for this will snap back to the top of the workspace the
// * first time the user scrolls, which is not an ideal solution and why
// * this is commented out.
// * A timeout of 0 works, but it is jarring and looks buggy.
// */
// $(window).load(function(){window.onscroll = function(){ window.onscroll=null; setTimeout( function(){workspace.scrollIntoView();}, 500 ); }});
//}
}
else
{ // previewing HIT
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;
timer.scrollIntoView();
//if (window.chrome)
//{
// $(window).load(window.onscroll = function(){ window.onscroll=null; setTimeout( function(){timer.scrollIntoView();}, 500);});
//}
}
}
}
});