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      1 /*
      2  * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #ifndef ResourceResponse_h
     27 #define ResourceResponse_h
     28 
     29 #include "ResourceResponseBase.h"
     30 #include <wtf/RetainPtr.h>
     31 
     32 #ifdef __OBJC__
     33 @class NSURLResponse;
     34 #else
     35 class NSURLResponse;
     36 #endif
     37 
     38 namespace WebCore {
     39 
     40 class ResourceResponse : public ResourceResponseBase {
     41 public:
     42     ResourceResponse()
     43         : m_isUpToDate(true)
     44     {
     45     }
     46 
     47     ResourceResponse(NSURLResponse* nsResponse)
     48         : m_nsResponse(nsResponse)
     49         , m_isUpToDate(false)
     50     {
     51         m_isNull = !nsResponse;
     52     }
     53 
     54     ResourceResponse(const KURL& url, const String& mimeType, long long expectedLength, const String& textEncodingName, const String& filename)
     55         : ResourceResponseBase(url, mimeType, expectedLength, textEncodingName, filename)
     56         , m_isUpToDate(true)
     57     {
     58     }
     59 
     60     unsigned memoryUsage() const
     61     {
     62         // FIXME: Find some programmatic lighweight way to calculate ResourceResponse and associated classes.
     63         // This is a rough estimate of resource overhead based on stats collected from the stress test.
     64         return 3072;
     65         /*  1280 * 2 +                // average size of ResourceResponse. Doubled to account for the WebCore copy and the CF copy.
     66                                       // Mostly due to the size of the hash maps, the Header Map strings and the URL.
     67             256 * 2                   // Overhead from ResourceRequest, doubled to account for WebCore copy and CF copy.
     68                                       // Mostly due to the URL and Header Map.
     69          */
     70     }
     71 
     72     NSURLResponse *nsURLResponse() const;
     73 
     74 private:
     75     friend class ResourceResponseBase;
     76 
     77     void platformLazyInit();
     78     static bool platformCompare(const ResourceResponse& a, const ResourceResponse& b);
     79 
     80     RetainPtr<NSURLResponse> m_nsResponse;
     81     bool m_isUpToDate;
     82 };
     83 
     84 } // namespace WebCore
     85 
     86 #endif // ResourceResponse_h
     87