Issue 370 - Make "Block element" hide elements for added filters

include.postload.js

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 689 matching lines @@
       case "clickhide-move":
         if (clickHideFiltersDialog)
         {
           clickHideFiltersDialog.style.left = (parseInt(clickHideFiltersDialog.style.left, 10) + msg.x) + "px";
           clickHideFiltersDialog.style.top = (parseInt(clickHideFiltersDialog.style.top, 10) + msg.y) + "px";
         }
         break;
       case "clickhide-close":
         if (currentElement && msg.remove)
         {
-          // Explicitly get rid of currentElement
-          var element = currentElement.prisoner || currentElement;
-          if (element && element.parentNode)
-            element.parentNode.removeChild(element);
+          // Hide the selected element itself if an added blocking
+          // filter is causing it to collapse. Note that this
+          // behavior is incomplete, but the best we can do here,
+          // e.g. if an added blocking filter matches other elements,
+          // the effect won't be visible until the page is is reloaded.
+          checkCollapse(currentElement.prisoner || currentElement);
+
+          // Apply added element hiding filters.
+          updateStylesheet();
         }
         clickHide_deactivate();
         break;
       case "clickhide-show-dialog":
         if (window.self == window.top)
           clickHide_showDialog(msg.screenX + window.pageXOffset,
                                msg.screenY + window.pageYOffset,
                                msg.clickHideFilters);
         break;
       case "clickhide-clear-last-right-click-event":
         if (lastRightClickEventValid)
           lastRightClickEventValid = false;
         else
           lastRightClickEvent = null;
         break;
     }
   });
 
   if (window == window.top)
     ext.backgroundPage.sendMessage({type: "report-html-page"});
 }