Bug 798567 removed nsIDOMCSSValueList interface

lib/ui.js

 /*
  * This file is part of the Adblock Plus,
  * Copyright (C) 2006-2012 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 1701 matching lines @@
       if (data && !data[1].filter)
         addMenuItem(data);
     }
 
     // Look for a background image
     if (!hadImage)
     {
       function extractImageURL(computedStyle, property)
       {
         let value = computedStyle.getPropertyCSSValue(property);
-        if (value instanceof Ci.nsIDOMCSSValueList && value.length >= 1)
+        // CSSValueList
+        if ("length" in value && value.length >= 1)

[Thomas Greiner, 2013/01/14 14:16:24]

What about using |value instanceof CSSValueList| instead?

[Wladimir Palant, 2013/01/14 14:46:54]

CSSValueList won't be defined in this context - it's a sandbox.

           value = value[0];
-        if (value instanceof Ci.nsIDOMCSSPrimitiveValue && value.primitiveType == Ci.nsIDOMCSSPrimitiveValue.CSS_URI)
+        // CSSValuePrimitiveType
+        if ("primitiveType" in value && value.primitiveType == value.CSS_URI)

[Thomas Greiner, 2013/01/14 14:16:24]

What about using |value instanceof CSSPrimitiveValue| instead?

[Wladimir Palant, 2013/01/14 14:46:54]

Same as above.

           return Utils.unwrapURL(value.getStringValue()).spec;
 
         return null;
       }
 
       let node = target;
       while (node)
       {
         if (node.nodeType == Ci.nsIDOMNode.ELEMENT_NODE)
         {
@@ skipping 193 matching lines @@
   ["abp-command-contribute", "command", UI.openContributePage.bind(UI)],
   ["abp-command-contribute-hide", "command", UI.hideContributeButton.bind(UI)]
 ];
 
 onShutdown.add(function()
 {
   for (let window in UI.applicationWindows)
     if (UI.isBottombarOpen(window))
       UI.toggleBottombar(window);
 });