/*

 * 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 "FrameLoaderTypes.h"

#include "ResourceLoader.h"

#include "SubstituteData.h"

#include <wtf/Forward.h>

#if HAVE(RUNLOOP_TIMER)

#include "RunLoopTimer.h"

#else

#include "Timer.h"

#endif

namespace WebCore {

    class FormState;

    class ResourceRequest;

    class MainResourceLoader : public ResourceLoader {

    public:

        static PassRefPtr<MainResourceLoader> create(Frame*);

        virtual ~MainResourceLoader();

        virtual bool load(const ResourceRequest&, const SubstituteData&);

        virtual void addData(const char*, int, bool allAtOnce);

        virtual void setDefersLoading(bool);

        virtual void willSendRequest(ResourceRequest&, const ResourceResponse& redirectResponse);

        virtual void didReceiveResponse(const ResourceResponse&);

        virtual void didReceiveData(const char*, int, long long lengthReceived, bool allAtOnce);

        virtual void didFinishLoading();

        virtual void didFail(const ResourceError&);

#if HAVE(RUNLOOP_TIMER)

        typedef RunLoopTimer<MainResourceLoader> MainResourceLoaderTimer;

#else

        typedef Timer<MainResourceLoader> MainResourceLoaderTimer;

#endif

        void handleDataLoadNow(MainResourceLoaderTimer*);

        bool isLoadingMultipartContent() const { return m_loadingMultipartContent; }

    private:

        MainResourceLoader(Frame*);

        virtual void didCancel(const ResourceError&);

        bool loadNow(ResourceRequest&);

        void handleEmptyLoad(const KURL&, bool forURLScheme);

        void handleDataLoadSoon(ResourceRequest& r);

        void startDataLoadTimer();

        void handleDataLoad(ResourceRequest&);

        void receivedError(const ResourceError&);

        ResourceError interruptionForPolicyChangeError() const;

        void stopLoadingForPolicyChange();

        bool isPostOrRedirectAfterPost(const ResourceRequest& newRequest, const ResourceResponse& redirectResponse);

        static void callContinueAfterNavigationPolicy(void*, const ResourceRequest&, PassRefPtr<FormState>, bool shouldContinue);

        void continueAfterNavigationPolicy(const ResourceRequest&, bool shouldContinue);

        static void callContinueAfterContentPolicy(void*, PolicyAction);

        void continueAfterContentPolicy(PolicyAction);

        void continueAfterContentPolicy(PolicyAction, const ResourceResponse&);

#if PLATFORM(QT)

        void substituteMIMETypeFromPluginDatabase(const ResourceResponse&);

#endif

        ResourceRequest m_initialRequest;

        SubstituteData m_substituteData;

        MainResourceLoaderTimer m_dataLoadTimer;

        bool m_loadingMultipartContent;

        bool m_waitingForContentPolicy;

        double m_timeOfLastDataReceived;

    };

}

#endif