/*
 * Copyright (C) 2005, 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.
 */

#ifndef MainResourceLoader_h
#define MainResourceLoader_h

#include "CachedRawResource.h"
#include "CachedResourceHandle.h"
#include "FrameLoaderTypes.h"
#include "ResourceLoader.h"
#include "SubstituteData.h"
#include <wtf/Forward.h>

namespace WebCore {

class ResourceRequest;

class MainResourceLoader : public RefCounted<MainResourceLoader>, public CachedRawResourceClient {
    WTF_MAKE_FAST_ALLOCATED;
public:
    static PassRefPtr<MainResourceLoader> create(DocumentLoader*);
    virtual ~MainResourceLoader();

    void load(const ResourceRequest&);
    ResourceLoader* loader() const;
    PassRefPtr<ResourceBuffer> resourceData();

    void setDefersLoading(bool);
    void setDataBufferingPolicy(DataBufferingPolicy);

    CachedRawResource* cachedMainResource() { return m_resource.get(); }

    unsigned long identifier() const;

    void reportMemoryUsage(MemoryObjectInfo*) const;

    void clearResource();

private:
    explicit MainResourceLoader(DocumentLoader*);

    virtual void redirectReceived(CachedResource*, ResourceRequest&, const ResourceResponse&) OVERRIDE;
    virtual void responseReceived(CachedResource*, const ResourceResponse&) OVERRIDE;
    virtual void dataReceived(CachedResource*, const char* data, int dataLength) OVERRIDE;
    virtual void notifyFinished(CachedResource*) OVERRIDE;

    FrameLoader* frameLoader() const;
    DocumentLoader* documentLoader() const { return m_documentLoader.get(); }

    const ResourceRequest& request() const;

    bool defersLoading() const;

    CachedResourceHandle<CachedRawResource> m_resource;

    ResourceRequest m_initialRequest;

    RefPtr<DocumentLoader> m_documentLoader;
};

}

#endif