/*

 * 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

 *     notice, this list of conditions and the following disclaimer in the

 *     documentation and/or other materials provided with the distribution. 

 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of

 *     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

 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE

 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY

 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES

 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;

 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND

 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#import <WebCore/DocumentLoader.h>

#import <wtf/RetainPtr.h>

#import <wtf/HashSet.h>

@class WebDataSource;

@class WebView;

namespace WebCore {

    class ResourceRequest;

}

class WebDocumentLoaderMac : public WebCore::DocumentLoader {

public:

    WebDocumentLoaderMac(const WebCore::ResourceRequest&, const WebCore::SubstituteData&);

    void setDataSource(WebDataSource *, WebView*);

    void detachDataSource();

    WebDataSource *dataSource() const;

    virtual void attachToFrame();

    virtual void detachFromFrame();

    void increaseLoadCount(unsigned long identifier);

    void decreaseLoadCount(unsigned long identifier);

private:

    void retainDataSource();

    void releaseDataSource();

    WebDataSource *m_dataSource;

    bool m_isDataSourceRetained;

    RetainPtr<id> m_resourceLoadDelegate;

    RetainPtr<id> m_downloadDelegate;

    HashSet<unsigned long> m_loadingResources;

};