--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/css/CSSRule.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,47 @@
+/*
+ * (C) 1999-2003 Lars Knoll (knoll@kde.org)
+ * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2002, 2005, 2006, 2007 Apple Inc. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+#include "CSSRule.h"
+
+#include "NotImplemented.h"
+
+namespace WebCore {
+
+CSSStyleSheet* CSSRule::parentStyleSheet() const
+{
+    StyleBase* curr = parent();
+    while (curr && !curr->isCSSStyleSheet())
+        curr = curr->parent();
+    return curr ? static_cast<CSSStyleSheet*>(curr) : 0;
+}
+
+CSSRule* CSSRule::parentRule() const
+{
+    return (parent() && parent()->isRule()) ? static_cast<CSSRule*>(parent()) : 0;
+}
+
+void CSSRule::setCssText(const String& /*cssText*/, ExceptionCode& /*ec*/)
+{
+    notImplemented();
+}
+
+} // namespace WebCore