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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 "RenderTextControl.h"
     26 
     27 namespace WebCore {
     28 
     29 class RenderTextControlMultiLine : public RenderTextControl {
     30 public:
     31     RenderTextControlMultiLine(Node*, bool);
     32     virtual ~RenderTextControlMultiLine();
     33 
     34     void forwardEvent(Event*);
     35 
     36 private:
     37     virtual bool isTextArea() const { return true; }
     38 
     39     virtual void subtreeHasChanged();
     40 
     41     virtual bool nodeAtPoint(const HitTestRequest&, HitTestResult&, int x, int y, int tx, int ty, HitTestAction);
     42 
     43     virtual float getAvgCharWidth(AtomicString family);
     44     virtual int preferredContentWidth(float charWidth) const;
     45     virtual void adjustControlHeightBasedOnLineHeight(int lineHeight);
     46     virtual int baselinePosition(FontBaseline, bool firstLine, LineDirectionMode, LinePositionMode = PositionOnContainingLine) const;
     47 
     48     virtual void updateFromElement();
     49     virtual void cacheSelection(int start, int end);
     50 
     51     virtual RenderStyle* textBaseStyle() const;
     52     virtual PassRefPtr<RenderStyle> createInnerTextStyle(const RenderStyle* startStyle) const;
     53     virtual int textBlockInsetLeft() const;
     54     virtual int textBlockInsetRight() const;
     55     virtual int textBlockInsetTop() const;
     56 };
     57 
     58 inline RenderTextControlMultiLine* toRenderTextControlMultiLine(RenderObject* object)
     59 {
     60     ASSERT(!object || object->isTextArea());
     61     return static_cast<RenderTextControlMultiLine*>(object);
     62 }
     63 
     64 // This will catch anyone doing an unnecessary cast.
     65 void toRenderTextControlMultiLine(const RenderTextControlMultiLine*);
     66 
     67 }
     68 
     69 #endif
     70