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      1 /*
      2  * Copyright (C) 2013 Google 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 are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef FetchContext_h
     32 #define FetchContext_h
     33 
     34 #include "core/fetch/CachePolicy.h"
     35 #include "core/fetch/FetchInitiatorInfo.h"
     36 #include "core/fetch/Resource.h"
     37 #include "platform/heap/Handle.h"
     38 #include "platform/network/ResourceLoadPriority.h"
     39 #include "wtf/Noncopyable.h"
     40 
     41 namespace blink {
     42 
     43 class Document;
     44 class DocumentLoader;
     45 class LocalFrame;
     46 class KURL;
     47 class Page;
     48 class ResourceError;
     49 class ResourceLoader;
     50 class ResourceResponse;
     51 class ResourceRequest;
     52 
     53 enum FetchResourceType {
     54     FetchMainResource,
     55     FetchSubresource
     56 };
     57 
     58 class FetchContext : public NoBaseWillBeGarbageCollectedFinalized<FetchContext> {
     59     WTF_MAKE_NONCOPYABLE(FetchContext);
     60 public:
     61     static FetchContext& nullInstance();
     62 
     63     FetchContext() { }
     64     virtual ~FetchContext() { }
     65     virtual void trace(Visitor*) { }
     66 
     67     virtual void reportLocalLoadFailed(const KURL&);
     68     virtual void addAdditionalRequestHeaders(Document*, ResourceRequest&, FetchResourceType);
     69     virtual void setFirstPartyForCookies(ResourceRequest&);
     70     virtual CachePolicy cachePolicy(Document*) const;
     71 
     72     virtual void dispatchDidChangeResourcePriority(unsigned long identifier, ResourceLoadPriority, int intraPriorityValue);
     73     virtual void dispatchWillSendRequest(DocumentLoader*, unsigned long identifier, ResourceRequest&, const ResourceResponse& redirectResponse, const FetchInitiatorInfo& = FetchInitiatorInfo());
     74     virtual void dispatchDidLoadResourceFromMemoryCache(const ResourceRequest&, const ResourceResponse&);
     75     virtual void dispatchDidReceiveResponse(DocumentLoader*, unsigned long identifier, const ResourceResponse&, ResourceLoader* = 0);
     76     virtual void dispatchDidReceiveData(DocumentLoader*, unsigned long identifier, const char* data, int dataLength, int encodedDataLength);
     77     virtual void dispatchDidDownloadData(DocumentLoader*, unsigned long identifier, int dataLength, int encodedDataLength);
     78     virtual void dispatchDidFinishLoading(DocumentLoader*, unsigned long identifier, double finishTime, int64_t encodedDataLength);
     79     virtual void dispatchDidFail(DocumentLoader*, unsigned long identifier, const ResourceError&);
     80     virtual void sendRemainingDelegateMessages(DocumentLoader*, unsigned long identifier, const ResourceResponse&, int dataLength);
     81 };
     82 
     83 }
     84 
     85 #endif
     86