WebCore/platform/FileChooser.h

/*
 * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer. 
 * 2.  Redistributions in binary form must reproduce the above copyright
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 *     documentation and/or other materials provided with the distribution. 
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 *     its contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission. 
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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 */

#ifndef FileChooser_h
#define FileChooser_h

#include "PlatformString.h"
#include <wtf/RefPtr.h>

#if PLATFORM(MAC)
#include <wtf/RetainPtr.h>
#ifdef __OBJC__
@class OpenPanelController;
#else
class OpenPanelController;
#endif
#endif

namespace WebCore {

class Document;
class Font;
class Icon;

class FileChooserClient {
public:
    virtual ~FileChooserClient() { }
    virtual void valueChanged() = 0;
};

class FileChooser : public RefCounted<FileChooser> {
public:
    static PassRefPtr<FileChooser> create(FileChooserClient*, const String& initialFilename);
    ~FileChooser();

    void disconnectClient() { m_client = 0; }
    bool disconnected() { return !m_client; }

    // FIXME: It's a layering violation that we pass a Document in here.
    // The platform directory is underneath the DOM, so it can't use the DOM.
    // Because of UI delegates, it's not clear that this class belongs in the platform
    // layer at all. It might need to go alongside the Chrome class instead.
    void openFileChooser(Document*);

    const String& filename() const { return m_filename; }
    String basenameForWidth(const Font&, int width) const;

    Icon* icon() const { return m_icon.get(); }

    void clear(); // for use by client; does not call valueChanged

    void chooseFile(const String& filename);

private:
    FileChooser(FileChooserClient*, const String& initialFilename);
    static PassRefPtr<Icon> chooseIcon(const String& filename);

    FileChooserClient* m_client;
    String m_filename;
    RefPtr<Icon> m_icon;

#if PLATFORM(MAC)
    RetainPtr<OpenPanelController> m_controller;
#endif
};

}

#endif