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      1 /*
      2  * Copyright (C) 2006, 2007, 2009, 2012 Apple Inc. All rights reserved.
      3  *
      4  * This library is free software; you can redistribute it and/or
      5  * modify it under the terms of the GNU Library General Public
      6  * License as published by the Free Software Foundation; either
      7  * version 2 of the License, or (at your option) any later version.
      8  *
      9  * This library is distributed in the hope that it will be useful,
     10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
     11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     12  * Library General Public License for more details.
     13  *
     14  * You should have received a copy of the GNU Library General Public License
     15  * along with this library; see the file COPYING.LIB.  If not, write to
     16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
     17  * Boston, MA 02110-1301, USA.
     18  *
     19  */
     20 
     21 #ifndef RenderFileUploadControl_h
     22 #define RenderFileUploadControl_h
     23 
     24 #include "core/rendering/RenderBlockFlow.h"
     25 
     26 namespace blink {
     27 
     28 class HTMLInputElement;
     29 
     30 // Each RenderFileUploadControl contains a RenderButton (for opening the file chooser), and
     31 // sufficient space to draw a file icon and filename. The RenderButton has a shadow node
     32 // associated with it to receive click/hover events.
     33 
     34 class RenderFileUploadControl FINAL : public RenderBlockFlow {
     35 public:
     36     RenderFileUploadControl(HTMLInputElement*);
     37     virtual ~RenderFileUploadControl();
     38 
     39     virtual bool isFileUploadControl() const OVERRIDE { return true; }
     40 
     41     String buttonValue();
     42     String fileTextValue() const;
     43 
     44 private:
     45     virtual const char* renderName() const OVERRIDE { return "RenderFileUploadControl"; }
     46 
     47     virtual void updateFromElement() OVERRIDE;
     48     virtual void computeIntrinsicLogicalWidths(LayoutUnit& minLogicalWidth, LayoutUnit& maxLogicalWidth) const OVERRIDE;
     49     virtual void computePreferredLogicalWidths() OVERRIDE;
     50     virtual void paintObject(PaintInfo&, const LayoutPoint&) OVERRIDE;
     51 
     52     int maxFilenameWidth() const;
     53 
     54     virtual PositionWithAffinity positionForPoint(const LayoutPoint&) OVERRIDE;
     55 
     56     HTMLInputElement* uploadButton() const;
     57 
     58     bool m_canReceiveDroppedFiles;
     59 };
     60 
     61 DEFINE_RENDER_OBJECT_TYPE_CASTS(RenderFileUploadControl, isFileUploadControl());
     62 
     63 } // namespace blink
     64 
     65 #endif // RenderFileUploadControl_h
     66