ehg-exh-always-include-expunged.user.js

// ==UserScript==
// @name           Always show expunged
// @namespace      dragontamer8740.expunged
// @description    Automatically checks the "show expunged galleries" checkbox. Now works in GreaseMonkey 4.
// @version        1.1
// @include        http://g.e-hentai.org/*
// @include        http://e-hentai.org/*
// @include        http://exhentai.org/*
// @include        https://g.e-hentai.org/*
// @include        https://e-hentai.org/*
// @include        https://exhentai.org/*
// @include        http://exhentai55ld2wyap5juskbm67czulomrouspdacjamjeloj7ugjbsad.onion/*
// @match          http://g.e-hentai.org/*
// @match          http://e-hentai.org/*
// @match          http://exhentai.org/*
// @match          https://g.e-hentai.org/*
// @match          https://e-hentai.org/*
// @match          https://exhentai.org/*
// @match          http://exhentai55ld2wyap5juskbm67czulomrouspdacjamjeloj7ugjbsad.onion/*
// @grant          none
// ==/UserScript==

// add a convenient ID for future use (also avoids some overhead from multiple selectors)
if(document.querySelector('input[name="f_search"]')) // only if search bar exists on current page
{
  if(!document.getElementById("showAdvSearchLink"))
  {
    document.querySelector('a[onclick="toggle_advsearch_pane(this); return false"]').setAttribute("id", "showAdvSearchLink");
  }
  if(document.getElementById("advdiv").style.display == "none")
  {
    // we use unsafeWindow to call page functions in Greasemonkey 4; otherwise,
    // we don't prefix page function calls.
    // First, try the greasemonkey 4 call. If that fails, try the normal
    // call. If both fail, we can't keep going.
    try {
      unsafeWindow.toggle_advsearch_pane(document.getElementById("showAdvSearchLink"));
    }
    catch(e)
    {
      // try un-prefixed version (non-GM4):
  	  try{
        toggle_advsearch_pane(document.getElementById("showAdvSearchLink"));
      }
      catch(e){console.log("(user script): couldn't find a way to run 'toggle_advsearch_pane()' from the source page. Probably a sandboxing problem I failed to account for. This is a bug! Please report it!")}
    }
  }
  function checkExpungedLocal()
  {
    if(document.getElementById("advdiv").style.display != "none")
    {
      document.querySelector('input[name="f_sh"]').checked=true;
    }
  }
  checkExpungedLocal();
  // store on the topmost level (window)
  window.checkExpunged=checkExpungedLocal;
  document.getElementById("showAdvSearchLink").addEventListener("click", window.checkExpunged);
}