Merge 80144

Source/WebCore/css/WebKitCSSKeyframesRule.cpp

 /*
  * Copyright (C) 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 70 matching lines @@
 }
 
 const WebKitCSSKeyframeRule* WebKitCSSKeyframesRule::item(unsigned index) const
 {
     CSSRule* rule = m_lstCSSRules.get()->item(index);
     return (rule && rule->isKeyframeRule()) ? static_cast<const WebKitCSSKeyframeRule*>(rule) : 0;
 }
 
 void WebKitCSSKeyframesRule::append(WebKitCSSKeyframeRule* rule)
 {
-    m_lstCSSRules.get()->append(rule);
+    if (!rule)
+        return;
+
+    m_lstCSSRules->append(rule);
+    rule->setParent(this);
+    
+    if (CSSMutableStyleDeclaration* style = rule->style())
+        style->setParent(this);
 }
 
 void WebKitCSSKeyframesRule::insertRule(const String& rule)
 {
     CSSParser p(useStrictParsing());
     RefPtr<CSSRule> newRule = p.parseKeyframeRule(parentStyleSheet(), rule);
     if (newRule.get() && newRule.get()->isKeyframeRule())
         append(static_cast<WebKitCSSKeyframeRule*>(newRule.get()));
 }
 
@@ skipping 41 matching lines @@
             result += m_lstCSSRules->item(i)->cssText();
             result += "\n";
         }
     }
 
     result += "}";
     return result;
 }
 
 } // namespace WebCore