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      1 /*
      2  * Copyright (C) 2005, 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 #include "FrameLoaderTypes.h"
     30 #include "ResourceLoader.h"
     31 #include "SubstituteData.h"
     32 #include <wtf/Forward.h>
     33 
     34 #if HAVE(RUNLOOP_TIMER)
     35 #include "RunLoopTimer.h"
     36 #else
     37 #include "Timer.h"
     38 #endif
     39 
     40 namespace WebCore {
     41 
     42     class FormState;
     43     class ResourceRequest;
     44 
     45     class MainResourceLoader : public ResourceLoader {
     46     public:
     47         static PassRefPtr<MainResourceLoader> create(Frame*);
     48         virtual ~MainResourceLoader();
     49 
     50         virtual bool load(const ResourceRequest&, const SubstituteData&);
     51         virtual void addData(const char*, int, bool allAtOnce);
     52 
     53         virtual void setDefersLoading(bool);
     54 
     55         virtual void willSendRequest(ResourceRequest&, const ResourceResponse& redirectResponse);
     56         virtual void didReceiveResponse(const ResourceResponse&);
     57         virtual void didReceiveData(const char*, int, long long lengthReceived, bool allAtOnce);
     58         virtual void didFinishLoading();
     59         virtual void didFail(const ResourceError&);
     60 
     61 #if HAVE(RUNLOOP_TIMER)
     62         typedef RunLoopTimer<MainResourceLoader> MainResourceLoaderTimer;
     63 #else
     64         typedef Timer<MainResourceLoader> MainResourceLoaderTimer;
     65 #endif
     66 
     67         void handleDataLoadNow(MainResourceLoaderTimer*);
     68 
     69         bool isLoadingMultipartContent() const { return m_loadingMultipartContent; }
     70 
     71     private:
     72         MainResourceLoader(Frame*);
     73 
     74         virtual void didCancel(const ResourceError&);
     75 
     76         bool loadNow(ResourceRequest&);
     77 
     78         void handleEmptyLoad(const KURL&, bool forURLScheme);
     79         void handleDataLoadSoon(ResourceRequest& r);
     80 
     81         void startDataLoadTimer();
     82         void handleDataLoad(ResourceRequest&);
     83 
     84         void receivedError(const ResourceError&);
     85         ResourceError interruptionForPolicyChangeError() const;
     86         void stopLoadingForPolicyChange();
     87         bool isPostOrRedirectAfterPost(const ResourceRequest& newRequest, const ResourceResponse& redirectResponse);
     88 
     89         static void callContinueAfterNavigationPolicy(void*, const ResourceRequest&, PassRefPtr<FormState>, bool shouldContinue);
     90         void continueAfterNavigationPolicy(const ResourceRequest&, bool shouldContinue);
     91 
     92         static void callContinueAfterContentPolicy(void*, PolicyAction);
     93         void continueAfterContentPolicy(PolicyAction);
     94         void continueAfterContentPolicy(PolicyAction, const ResourceResponse&);
     95 
     96 #if PLATFORM(QT)
     97         void substituteMIMETypeFromPluginDatabase(const ResourceResponse&);
     98 #endif
     99 
    100         ResourceRequest m_initialRequest;
    101         SubstituteData m_substituteData;
    102 
    103         MainResourceLoaderTimer m_dataLoadTimer;
    104 
    105         bool m_loadingMultipartContent;
    106         bool m_waitingForContentPolicy;
    107     };
    108 
    109 }
    110