Issue 491 - Validate custom filters

block.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2014 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 46 matching lines @@
   }
   else if (event.keyCode == 13 && !event.shiftKey && !event.ctrlKey)
   {
     event.preventDefault();
     addFilters();
   }
 }
 
 function addFilters()
 {
-  // Tell the background page to add the filters
-  var filters = document.getElementById("filters").value.split(/[\r\n]+/)
-                        .map(function(f) {return f.replace(/^\s+/, "").replace(/\s+$/, "");})
-                        .filter(function(f) {return f != "";});
-  ext.backgroundPage.sendMessage({type: "add-filters", filters: filters});
-  closeDialog(true);
+  ext.backgroundPage.sendMessage(
+    {
+      type: "add-filters",
+      text: document.getElementById("filters").value
+    },
+
+    function(response)
+    {
+      if (response.status == "ok")
+        closeDialog(true);
+      else
+        alert(response.error);
+    }
+  );
 }
 
 function closeDialog(success)
 {
   ext.backgroundPage.sendMessage(
     {
       type: "forward",
       payload:
       {
         type: "clickhide-close",
@@ skipping 33 matching lines @@
     );
     dragCoords = [event.screenX, event.screenY];
   }
 }
 
 function onDragEnd(event)
 {
   onDrag(event);
   dragCoords = null;
 }