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      1 /*
      2  * Copyright (C) 2006, 2007 Apple 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  *
      8  * 1.  Redistributions of source code must retain the above copyright
      9  *     notice, this list of conditions and the following disclaimer.
     10  * 2.  Redistributions in binary form must reproduce the above copyright
     11  *     notice, this list of conditions and the following disclaimer in the
     12  *     documentation and/or other materials provided with the distribution.
     13  * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
     14  *     its contributors may be used to endorse or promote products derived
     15  *     from this software without specific prior written permission.
     16  *
     17  * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
     18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
     19  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
     20  * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
     21  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     22  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     23  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
     24  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #import <WebCore/DocumentLoader.h>
     30 #import <wtf/RetainPtr.h>
     31 #import <wtf/HashSet.h>
     32 
     33 @class WebDataSource;
     34 @class WebView;
     35 
     36 namespace WebCore {
     37     class ResourceRequest;
     38 }
     39 
     40 class WebDocumentLoaderMac : public WebCore::DocumentLoader {
     41 public:
     42     static PassRefPtr<WebDocumentLoaderMac> create(const WebCore::ResourceRequest& request, const WebCore::SubstituteData& data)
     43     {
     44         return adoptRef(new WebDocumentLoaderMac(request, data));
     45     }
     46 
     47     void setDataSource(WebDataSource *, WebView*);
     48     void detachDataSource();
     49     WebDataSource *dataSource() const;
     50 
     51     void increaseLoadCount(unsigned long identifier);
     52     void decreaseLoadCount(unsigned long identifier);
     53 
     54 private:
     55     WebDocumentLoaderMac(const WebCore::ResourceRequest&, const WebCore::SubstituteData&);
     56 
     57     virtual void attachToFrame();
     58     virtual void detachFromFrame();
     59 
     60     void retainDataSource();
     61     void releaseDataSource();
     62 
     63     WebDataSource *m_dataSource;
     64     bool m_isDataSourceRetained;
     65     RetainPtr<id> m_resourceLoadDelegate;
     66     RetainPtr<id> m_downloadDelegate;
     67     HashSet<unsigned long> m_loadingResources;
     68 };
     69