diff -r 000000000000 -r 4f2f89ce4247 WebCore/rendering/RenderTextControlMultiLine.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderTextControlMultiLine.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,147 @@
+/**
+ * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
+ *           (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/) 
+ *
+ * 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 "RenderTextControlMultiLine.h"
+
+#include "Event.h"
+#include "EventNames.h"
+#include "Frame.h"
+#include "HTMLNames.h"
+#include "HTMLTextAreaElement.h"
+#include "HitTestResult.h"
+
+namespace WebCore {
+
+RenderTextControlMultiLine::RenderTextControlMultiLine(Node* node, bool placeholderVisible)
+    : RenderTextControl(node, placeholderVisible)
+{
+}
+
+RenderTextControlMultiLine::~RenderTextControlMultiLine()
+{
+    if (node())
+        static_cast<HTMLTextAreaElement*>(node())->rendererWillBeDestroyed();
+}
+
+void RenderTextControlMultiLine::subtreeHasChanged()
+{
+    RenderTextControl::subtreeHasChanged();
+    HTMLTextAreaElement* textArea = static_cast<HTMLTextAreaElement*>(node());
+    textArea->setFormControlValueMatchesRenderer(false);
+    textArea->setNeedsValidityCheck();
+
+    if (!node()->focused())
+        return;
+
+    node()->dispatchEvent(Event::create(eventNames().inputEvent, true, false));
+
+    if (Frame* frame = this->frame())
+        frame->textDidChangeInTextArea(textArea);
+}
+
+bool RenderTextControlMultiLine::nodeAtPoint(const HitTestRequest& request, HitTestResult& result, int x, int y, int tx, int ty, HitTestAction hitTestAction)
+{
+    if (!RenderTextControl::nodeAtPoint(request, result, x, y, tx, ty, hitTestAction))
+        return false;
+
+    bool resultIsTextValueOrPlaceholder
+        = (!m_placeholderVisible && result.innerNode() == innerTextElement())
+        || (m_placeholderVisible && result.innerNode()->isDescendantOf(innerTextElement()));
+    if (result.innerNode() == node() || resultIsTextValueOrPlaceholder)
+        hitInnerTextElement(result, x, y, tx, ty);
+
+    return true;
+}
+
+void RenderTextControlMultiLine::forwardEvent(Event* event)
+{
+    RenderTextControl::forwardEvent(event);
+}
+
+float RenderTextControlMultiLine::getAvgCharWidth(AtomicString family)
+{
+    // Since Lucida Grande is the default font, we want this to match the width
+    // of Courier New, the default font for textareas in IE, Firefox and Safari Win.
+    // 1229 is the avgCharWidth value in the OS/2 table for Courier New.
+    if (family == AtomicString("Lucida Grande"))
+        return scaleEmToUnits(1229);
+
+    return RenderTextControl::getAvgCharWidth(family);
+}
+
+int RenderTextControlMultiLine::preferredContentWidth(float charWidth) const
+{
+    int factor = static_cast<HTMLTextAreaElement*>(node())->cols();
+    return static_cast<int>(ceilf(charWidth * factor)) + scrollbarThickness();
+}
+
+void RenderTextControlMultiLine::adjustControlHeightBasedOnLineHeight(int lineHeight)
+{
+    setHeight(height() + lineHeight * static_cast<HTMLTextAreaElement*>(node())->rows());
+}
+
+int RenderTextControlMultiLine::baselinePosition(bool, bool) const
+{
+    return height() + marginTop() + marginBottom();
+}
+
+void RenderTextControlMultiLine::updateFromElement()
+{
+    createSubtreeIfNeeded(0);
+    RenderTextControl::updateFromElement();
+
+    HTMLTextAreaElement* textArea = static_cast<HTMLTextAreaElement*>(node());
+    if (m_placeholderVisible)
+        setInnerTextValue(textArea->strippedPlaceholder());
+    else
+        setInnerTextValue(textArea->value());
+}
+
+void RenderTextControlMultiLine::cacheSelection(int start, int end)
+{
+    static_cast<HTMLTextAreaElement*>(node())->cacheSelection(start, end);
+}
+
+PassRefPtr<RenderStyle> RenderTextControlMultiLine::createInnerTextStyle(const RenderStyle* startStyle) const
+{
+    RefPtr<RenderStyle> textBlockStyle;
+    if (m_placeholderVisible) {
+        if (RenderStyle* pseudoStyle = getCachedPseudoStyle(INPUT_PLACEHOLDER))
+            textBlockStyle = RenderStyle::clone(pseudoStyle);
+    }
+    if (!textBlockStyle) {
+        textBlockStyle = RenderStyle::create();
+        textBlockStyle->inheritFrom(startStyle);
+    }
+
+    adjustInnerTextStyle(startStyle, textBlockStyle.get());
+    textBlockStyle->setDisplay(BLOCK);
+
+    return textBlockStyle.release();
+}
+
+RenderStyle* RenderTextControlMultiLine::textBaseStyle() const
+{
+    return style();
+}
+
+}