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diff --git a/Source/WebCore/html/HTMLDetailsElement.h b/Source/WebCore/html/HTMLDetailsElement.h
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+++ b/Source/WebCore/html/HTMLDetailsElement.h
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+/*
+ * Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
+ *
+ * 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.
+ *
+ */
+
+#ifndef HTMLDetailsElement_h
+#define HTMLDetailsElement_h
+
+#include "HTMLElement.h"
+
+namespace WebCore {
+
+class HTMLDetailsElement : public HTMLElement {
+public:
+    static PassRefPtr<HTMLDetailsElement> create(const QualifiedName& tagName, Document* document);
+    Node* mainSummary() const { return m_mainSummary; }
+    void toggleOpen();
+
+private:
+    enum RefreshRenderer {
+        RefreshRendererAllowed,
+        RefreshRendererSupressed,
+    };
+
+    enum SummaryType {
+        NoSummary,
+        DefaultSummary,
+        ForwardingSummary
+    };
+
+    HTMLDetailsElement(const QualifiedName&, Document*);
+
+    virtual RenderObject* createRenderer(RenderArena*, RenderStyle*);
+    virtual void childrenChanged(bool changedByParser, Node* beforeChange, Node* afterChange, int childCountDelta);
+    virtual void finishParsingChildren();
+
+    void parseMappedAttribute(Attribute*);
+    bool childShouldCreateRenderer(Node*) const;
+
+    Node* ensureMainSummary();
+    void refreshMainSummary(RefreshRenderer);
+    void ensureShadowSubtreeOf(SummaryType);
+    void createShadowSubtree();
+
+    SummaryType m_summaryType;
+    Node* m_mainSummary;
+    bool m_isOpen;
+
+};
+
+} // namespace WebCore
+
+#endif // HTMLDetailsElement_h