diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/RenderButton.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderButton.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2005 Apple Computer
+ *
+ * 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 RenderButton_h
+#define RenderButton_h
+
+#include "RenderFlexibleBox.h"
+#include "Timer.h"
+#include <wtf/OwnPtr.h>
+
+namespace WebCore {
+
+class RenderTextFragment;
+
+// RenderButtons are just like normal flexboxes except that they will generate an anonymous block child.
+// For inputs, they will also generate an anonymous RenderText and keep its style and content up
+// to date as the button changes.
+class RenderButton : public RenderFlexibleBox {
+public:
+    RenderButton(Node*);
+
+    virtual const char* renderName() const { return "RenderButton"; }
+    virtual bool isRenderButton() const { return true; }
+
+    virtual void addChild(RenderObject* newChild, RenderObject *beforeChild = 0);
+    virtual void removeChild(RenderObject*);
+    virtual void removeLeftoverAnonymousBlock(RenderBlock*) { }
+    virtual bool createsAnonymousWrapper() const { return true; }
+
+    void setupInnerStyle(RenderStyle*);
+    virtual void updateFromElement();
+
+    virtual void updateBeforeAfterContent(PseudoId);
+
+    virtual bool hasControlClip() const { return true; }
+    virtual IntRect controlClipRect(int /*tx*/, int /*ty*/) const;
+
+    void setText(const String&);
+    String text() const;
+
+    virtual bool canHaveChildren() const;
+
+private:
+    virtual void styleWillChange(StyleDifference, const RenderStyle* newStyle);
+    virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);
+
+    virtual bool hasLineIfEmpty() const { return true; }
+
+    virtual bool requiresForcedStyleRecalcPropagation() const { return true; }
+
+    void timerFired(Timer<RenderButton>*);
+
+    RenderTextFragment* m_buttonText;
+    RenderBlock* m_inner;
+
+    OwnPtr<Timer<RenderButton> > m_timer;
+    bool m_default;
+};
+
+inline RenderButton* toRenderButton(RenderObject* object)
+{ 
+    ASSERT(!object || object->isRenderButton());
+    return static_cast<RenderButton*>(object);
+}
+
+inline const RenderButton* toRenderButton(const RenderObject* object)
+{ 
+    ASSERT(!object || object->isRenderButton());
+    return static_cast<const RenderButton*>(object);
+}
+
+// This will catch anyone doing an unnecessary cast.
+void toRenderButton(const RenderButton*);
+
+} // namespace WebCore
+
+#endif // RenderButton_h