/*
 * Copyright (C) 2003, 2006 Apple Computer, Inc.  All rights reserved.
 * Copyright (C) 2006 Samuel Weinig <sam.weinig@gmail.com>
 * Copyright (C) 2008 Google, Inc.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``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 COMPUTER, INC. OR
 * 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 ResourceRequest_h
#define ResourceRequest_h

#include "ResourceRequestBase.h"

#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>

namespace WebCore {

    class Frame;

    class ResourceRequest : public ResourceRequestBase {
    public:
        // The type of this ResourceRequest, based on how the resource will be used.
        enum TargetType {
            TargetIsMainFrame,
            TargetIsSubframe,
            TargetIsSubresource, // Resource is a generic subresource. (Generally a specific type should be specified)
            TargetIsStyleSheet,
            TargetIsScript,
            TargetIsFontResource,
            TargetIsImage,
            TargetIsObject,
            TargetIsMedia,
            TargetIsWorker,
            TargetIsSharedWorker,
            TargetIsPrefetch,
            TargetIsPrerender,
            TargetIsFavicon,
            TargetIsXHR,
            TargetIsTextTrack,
        };

        class ExtraData : public RefCounted<ExtraData> {
        public:
            virtual ~ExtraData() { }
        };

        ResourceRequest(const String& url) 
            : ResourceRequestBase(KURL(ParsedURLString, url), UseProtocolCachePolicy)
            , m_requestorID(0)
            , m_requestorProcessID(0)
            , m_appCacheHostID(0)
            , m_hasUserGesture(false)
            , m_downloadToFile(false)
            , m_targetType(TargetIsSubresource)
        {
        }

        ResourceRequest(const KURL& url) 
            : ResourceRequestBase(url, UseProtocolCachePolicy)
            , m_requestorID(0)
            , m_requestorProcessID(0)
            , m_appCacheHostID(0)
            , m_hasUserGesture(false)
            , m_downloadToFile(false)
            , m_targetType(TargetIsSubresource)
        {
        }

        ResourceRequest(const KURL& url, const String& referrer, ResourceRequestCachePolicy policy = UseProtocolCachePolicy) 
            : ResourceRequestBase(url, policy)
            , m_requestorID(0)
            , m_requestorProcessID(0)
            , m_appCacheHostID(0)
            , m_hasUserGesture(false)
            , m_downloadToFile(false)
            , m_targetType(TargetIsSubresource)
        {
            setHTTPReferrer(referrer);
        }
        
        ResourceRequest()
            : ResourceRequestBase(KURL(), UseProtocolCachePolicy)
            , m_requestorID(0)
            , m_requestorProcessID(0)
            , m_appCacheHostID(0)
            , m_hasUserGesture(false)
            , m_downloadToFile(false)
            , m_targetType(TargetIsSubresource)
        {
        }

        // Allows the request to be matched up with its requestor.
        int requestorID() const { return m_requestorID; }
        void setRequestorID(int requestorID) { m_requestorID = requestorID; }

        // The process id of the process from which this request originated. In
        // the case of out-of-process plugins, this allows to link back the
        // request to the plugin process (as it is processed through a render
        // view process).
        int requestorProcessID() const { return m_requestorProcessID; }
        void setRequestorProcessID(int requestorProcessID) { m_requestorProcessID = requestorProcessID; }

        // Allows the request to be matched up with its app cache host.
        int appCacheHostID() const { return m_appCacheHostID; }
        void setAppCacheHostID(int id) { m_appCacheHostID = id; }

        // True if request was user initiated.
        bool hasUserGesture() const { return m_hasUserGesture; }
        void setHasUserGesture(bool hasUserGesture) { m_hasUserGesture = hasUserGesture; }

        // True if request should be downloaded to file.
        bool downloadToFile() const { return m_downloadToFile; }
        void setDownloadToFile(bool downloadToFile) { m_downloadToFile = downloadToFile; }

        // Extra data associated with this request.
        ExtraData* extraData() const { return m_extraData.get(); }
        void setExtraData(PassRefPtr<ExtraData> extraData) { m_extraData = extraData; }

        // What this request is for.
        TargetType targetType() const { return m_targetType; }
        void setTargetType(TargetType type) { m_targetType = type; }

    private:
        friend class ResourceRequestBase;

        void doUpdatePlatformRequest() {}
        void doUpdateResourceRequest() {}

        PassOwnPtr<CrossThreadResourceRequestData> doPlatformCopyData(PassOwnPtr<CrossThreadResourceRequestData>) const;
        void doPlatformAdopt(PassOwnPtr<CrossThreadResourceRequestData>);

        int m_requestorID;
        int m_requestorProcessID;
        int m_appCacheHostID;
        bool m_hasUserGesture;
        bool m_downloadToFile;
        RefPtr<ExtraData> m_extraData;
        TargetType m_targetType;
    };

    struct CrossThreadResourceRequestData : public CrossThreadResourceRequestDataBase {
        int m_requestorID;
        int m_requestorProcessID;
        int m_appCacheHostID;
        bool m_hasUserGesture;
        bool m_downloadToFile;
        ResourceRequest::TargetType m_targetType;
    };

} // namespace WebCore

#endif
