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      1 /*
      2  * Copyright (C) 2008 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
      3  * Copyright (C) 2009 Apple Inc. All rights reserved.
      4  *
      5  * This library is free software; you can redistribute it and/or
      6  * modify it under the terms of the GNU Library General Public
      7  * License as published by the Free Software Foundation; either
      8  * version 2 of the License, or (at your option) any later version.
      9  *
     10  * This library is distributed in the hope that it will be useful,
     11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     13  * Library General Public License for more details.
     14  *
     15  * You should have received a copy of the GNU Library General Public License
     16  * along with this library; see the file COPYING.LIB.  If not, write to
     17  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     18  * Boston, MA 02110-1301, USA.
     19  *
     20  */
     21 
     22 #ifndef RenderTextControlMultiLine_h
     23 #define RenderTextControlMultiLine_h
     24 
     25 #include "core/rendering/RenderTextControl.h"
     26 
     27 namespace WebCore {
     28 
     29 class HTMLTextAreaElement;
     30 
     31 class RenderTextControlMultiLine FINAL : public RenderTextControl {
     32 public:
     33     RenderTextControlMultiLine(HTMLTextAreaElement*);
     34     virtual ~RenderTextControlMultiLine();
     35 
     36 private:
     37     virtual bool isTextArea() const { return true; }
     38 
     39     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction) OVERRIDE;
     40 
     41     virtual float getAvgCharWidth(AtomicString family);
     42     virtual LayoutUnit preferredContentLogicalWidth(float charWidth) const;
     43     virtual LayoutUnit computeControlLogicalHeight(LayoutUnit lineHeight, LayoutUnit nonContentHeight) const OVERRIDE;
     44     virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const;
     45 
     46     virtual RenderStyle* textBaseStyle() const;
     47     virtual PassRefPtr<RenderStyle> createInnerTextStyle(const RenderStyle* startStyle) const;
     48     virtual RenderObject* layoutSpecialExcludedChild(bool relayoutChildren);
     49 };
     50 
     51 inline RenderTextControlMultiLine* toRenderTextControlMultiLine(RenderObject* object)
     52 {
     53     ASSERT_WITH_SECURITY_IMPLICATION(!object || object->isTextArea());
     54     return static_cast<RenderTextControlMultiLine*>(object);
     55 }
     56 
     57 // This will catch anyone doing an unnecessary cast.
     58 void toRenderTextControlMultiLine(const RenderTextControlMultiLine*);
     59 
     60 }
     61 
     62 #endif
     63