1 /*

     2  * Copyright (C) 2006, 2007, 2009 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 "FileChooser.h"

    25 #include "RenderBlock.h"

    26 

    27 namespace WebCore {

    28 

    29 class Chrome;

    30 class HTMLInputElement;

    31     

    32 // Each RenderFileUploadControl contains a RenderButton (for opening the file chooser), and

    33 // sufficient space to draw a file icon and filename. The RenderButton has a shadow node

    34 // associated with it to receive click/hover events.

    35 

    36 class RenderFileUploadControl : public RenderBlock, private FileChooserClient {

    37 public:

    38     RenderFileUploadControl(HTMLInputElement*);

    39     virtual ~RenderFileUploadControl();

    40 

    41     virtual bool isFileUploadControl() const { return true; }

    42 

    43     void click();

    44 

    45     void receiveDroppedFiles(const Vector<String>&);

    46 

    47     String buttonValue();

    48     String fileTextValue() const;

    49     

    50 private:

    51     virtual const char* renderName() const { return "RenderFileUploadControl"; }

    52 

    53     virtual void updateFromElement();

    54     virtual void calcPrefWidths();

    55     virtual void paintObject(PaintInfo&, int tx, int ty);

    56 

    57     virtual void styleDidChange(StyleDifference, const RenderStyle* oldStyle);

    58 

    59     virtual bool requiresForcedStyleRecalcPropagation() const { return true; }

    60 

    61     // FileChooserClient methods.

    62     void valueChanged();

    63     void repaint() { RenderBlock::repaint(); }

    64     bool allowsMultipleFiles();

    65 #if ENABLE(DIRECTORY_UPLOAD)

    66     bool allowsDirectoryUpload();

    67 #endif

    68     String acceptTypes();

    69     void chooseIconForFiles(FileChooser*, const Vector<String>&);

    70 

    71     Chrome* chrome() const;

    72     int maxFilenameWidth() const;

    73     PassRefPtr<RenderStyle> createButtonStyle(const RenderStyle* parentStyle) const;

    74 

    75     RefPtr<HTMLInputElement> m_button;

    76     RefPtr<FileChooser> m_fileChooser;

    77 };

    78 

    79 inline RenderFileUploadControl* toRenderFileUploadControl(RenderObject* object)

    80 {

    81     ASSERT(!object || object->isFileUploadControl());

    82     return static_cast<RenderFileUploadControl*>(object);

    83 }

    84 

    85 inline const RenderFileUploadControl* toRenderFileUploadControl(const RenderObject* object)

    86 {

    87     ASSERT(!object || object->isFileUploadControl());

    88     return static_cast<const RenderFileUploadControl*>(object);

    89 }

    90 

    91 // This will catch anyone doing an unnecessary cast.

    92 void toRenderFileUploadControl(const RenderFileUploadControl*);

    93 

    94 } // namespace WebCore

    95 

    96 #endif // RenderFileUploadControl_h