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30 #ifndef DocumentLoader_h
31 #define DocumentLoader_h
33 #include "core/fetch/RawResource.h"
34 #include "core/fetch/ResourceLoaderOptions.h"
35 #include "core/fetch/ResourcePtr.h"
36 #include "core/loader/DocumentLoadTiming.h"
37 #include "core/loader/DocumentWriter.h"
38 #include "core/loader/NavigationAction.h"
39 #include "core/loader/SubstituteData.h"
40 #include "platform/network/ResourceError.h"
41 #include "platform/network/ResourceRequest.h"
42 #include "platform/network/ResourceResponse.h"
43 #include "wtf/HashSet.h"
44 #include "wtf/RefPtr.h"
51 class ApplicationCacheHost;
52 class ArchiveResource;
53 class ArchiveResourceCollection;
54 class ResourceFetcher;
64 class DocumentLoader : public RefCounted<DocumentLoader>, private RawResourceClient {
65 WTF_MAKE_FAST_ALLOCATED;
67 static PassRefPtr<DocumentLoader> create(Frame* frame, const ResourceRequest& request, const SubstituteData& data)
69 return adoptRef(new DocumentLoader(frame, request, data));
71 virtual ~DocumentLoader();
73 Frame* frame() const { return m_frame; }
75 void detachFromFrame();
77 unsigned long mainResourceIdentifier() const;
79 void replaceDocument(const String& source, Document*);
81 const AtomicString& mimeType() const;
83 void setUserChosenEncoding(const String& charset);
85 const ResourceRequest& originalRequest() const;
87 const ResourceRequest& request() const;
89 ResourceFetcher* fetcher() const { return m_fetcher.get(); }
91 const SubstituteData& substituteData() const { return m_substituteData; }
93 const KURL& url() const;
94 const KURL& unreachableURL() const;
95 bool isURLValidForNewHistoryEntry() const;
97 const KURL& originalURL() const;
98 const AtomicString& responseMIMEType() const;
100 void updateForSameDocumentNavigation(const KURL&);
102 bool isCommitted() const { return m_committed; }
103 bool isLoading() const;
104 const ResourceResponse& response() const { return m_response; }
105 const ResourceError& mainDocumentError() const { return m_mainDocumentError; }
106 bool isClientRedirect() const { return m_isClientRedirect; }
107 void setIsClientRedirect(bool isClientRedirect) { m_isClientRedirect = isClientRedirect; }
108 bool replacesCurrentHistoryItem() const { return m_replacesCurrentHistoryItem; }
109 void setReplacesCurrentHistoryItem(bool replacesCurrentHistoryItem) { m_replacesCurrentHistoryItem = replacesCurrentHistoryItem; }
110 bool isLoadingInAPISense() const;
111 const AtomicString& overrideEncoding() const { return m_overrideEncoding; }
113 bool scheduleArchiveLoad(Resource*, const ResourceRequest&);
115 bool shouldContinueForNavigationPolicy(const ResourceRequest&);
116 const NavigationAction& triggeringAction() const { return m_triggeringAction; }
117 void setTriggeringAction(const NavigationAction& action) { m_triggeringAction = action; }
119 void setOverrideEncoding(const AtomicString& encoding) { m_overrideEncoding = encoding; }
121 void setDefersLoading(bool);
123 void startLoadingMainResource();
124 void cancelMainResourceLoad(const ResourceError&);
126 DocumentLoadTiming* timing() { return &m_documentLoadTiming; }
128 ApplicationCacheHost* applicationCacheHost() const { return m_applicationCacheHost.get(); }
130 void checkLoadComplete();
132 bool isRedirect() const { return m_redirectChain.size() > 1; }
133 void clearRedirectChain();
134 void appendRedirect(const KURL&);
137 DocumentLoader(Frame*, const ResourceRequest&, const SubstituteData&);
139 Vector<KURL> m_redirectChain;
142 static PassRefPtr<DocumentWriter> createWriterFor(Frame*, const Document* ownerDocument, const KURL&, const AtomicString& mimeType, const AtomicString& encoding, bool userChosen, bool dispatch);
144 void ensureWriter(const AtomicString& mimeType, const KURL& overridingURL = KURL());
145 void endWriting(DocumentWriter*);
147 Document* document() const;
148 FrameLoader* frameLoader() const;
150 void commitIfReady();
151 void commitData(const char* bytes, size_t length);
152 void setMainDocumentError(const ResourceError&);
153 void clearMainResourceLoader();
154 ResourceLoader* mainResourceLoader() const;
155 void clearMainResourceHandle();
157 bool maybeCreateArchive();
158 void clearArchiveResources();
160 void prepareSubframeArchiveLoadIfNeeded();
161 void addAllArchiveResources(MHTMLArchive*);
163 void willSendRequest(ResourceRequest&, const ResourceResponse&);
164 void finishedLoading(double finishTime);
165 void mainReceivedError(const ResourceError&);
166 virtual void redirectReceived(Resource*, ResourceRequest&, const ResourceResponse&) OVERRIDE FINAL;
167 virtual void updateRequest(Resource*, const ResourceRequest&) OVERRIDE FINAL;
168 virtual void responseReceived(Resource*, const ResourceResponse&) OVERRIDE FINAL;
169 virtual void dataReceived(Resource*, const char* data, int length) OVERRIDE FINAL;
170 virtual void notifyFinished(Resource*) OVERRIDE FINAL;
172 bool maybeLoadEmpty();
174 bool isRedirectAfterPost(const ResourceRequest&, const ResourceResponse&);
176 bool shouldContinueForResponse() const;
179 RefPtr<ResourceFetcher> m_fetcher;
181 ResourcePtr<RawResource> m_mainResource;
183 RefPtr<DocumentWriter> m_writer;
185 // A reference to actual request used to create the data source.
186 // The only part of this request that should change is the url, and
187 // that only in the case of a same-document navigation.
188 ResourceRequest m_originalRequest;
190 SubstituteData m_substituteData;
192 // The 'working' request. It may be mutated
193 // several times from the original request to include additional
194 // headers, cookie information, canonicalization and redirects.
195 ResourceRequest m_request;
197 ResourceResponse m_response;
199 ResourceError m_mainDocumentError;
202 bool m_isClientRedirect;
203 bool m_replacesCurrentHistoryItem;
205 AtomicString m_overrideEncoding;
207 // The action that triggered loading - we keep this around for the
208 // benefit of the various policy handlers.
209 NavigationAction m_triggeringAction;
211 OwnPtr<ArchiveResourceCollection> m_archiveResourceCollection;
212 RefPtr<MHTMLArchive> m_archive;
214 bool m_loadingMainResource;
215 DocumentLoadTiming m_documentLoadTiming;
217 double m_timeOfLastDataReceived;
219 friend class ApplicationCacheHost; // for substitute resource delivery
220 OwnPtr<ApplicationCacheHost> m_applicationCacheHost;
224 #endif // DocumentLoader_h