diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/RenderBR.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderBR.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,100 @@
+/**
+ * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2006 Apple Computer, Inc.
+ *
+ * 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 "RenderBR.h"
+
+#include "Document.h"
+#include "InlineTextBox.h"
+#include "VisiblePosition.h"
+
+namespace WebCore {
+
+RenderBR::RenderBR(Node* node)
+    : RenderText(node, StringImpl::create("\n"))
+    , m_lineHeight(-1)
+{
+}
+
+RenderBR::~RenderBR()
+{
+}
+
+int RenderBR::baselinePosition(bool firstLine, bool isRootLineBox) const
+{
+    if (firstTextBox() && !firstTextBox()->isText())
+        return 0;
+    return RenderText::baselinePosition(firstLine, isRootLineBox);
+}
+
+int RenderBR::lineHeight(bool firstLine, bool /*isRootLineBox*/) const
+{
+    if (firstTextBox() && !firstTextBox()->isText())
+        return 0;
+
+    if (firstLine) {
+        RenderStyle* s = style(firstLine);
+        Length lh = s->lineHeight();
+        if (lh.isNegative()) {
+            if (s == style()) {
+                if (m_lineHeight == -1)
+                    m_lineHeight = RenderObject::lineHeight(false);
+                return m_lineHeight;
+            }
+            return s->font().lineSpacing();
+        }
+        if (lh.isPercent())
+            return lh.calcMinValue(s->fontSize());
+        return lh.value();
+    }
+
+    if (m_lineHeight == -1)
+        m_lineHeight = RenderObject::lineHeight(false);
+    return m_lineHeight;
+}
+
+void RenderBR::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
+{
+    RenderText::styleDidChange(diff, oldStyle);
+    m_lineHeight = -1;
+}
+
+int RenderBR::caretMinOffset() const 
+{ 
+    return 0;
+}
+
+int RenderBR::caretMaxOffset() const 
+{ 
+    return 1;
+}
+
+unsigned RenderBR::caretMaxRenderedOffset() const
+{
+    return 1;
+}
+
+VisiblePosition RenderBR::positionForPoint(const IntPoint&)
+{
+    return createVisiblePosition(0, DOWNSTREAM);
+}
+
+} // namespace WebCore