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1 /* | 1 /* |
2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) | 2 Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de) |
3 Copyright (C) 2001 Dirk Mueller <mueller@kde.org> | 3 Copyright (C) 2001 Dirk Mueller <mueller@kde.org> |
4 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
rights reserved. | 4 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
rights reserved. |
5 Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/ | 5 Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/ |
6 | 6 |
7 This library is free software; you can redistribute it and/or | 7 This library is free software; you can redistribute it and/or |
8 modify it under the terms of the GNU Library General Public | 8 modify it under the terms of the GNU Library General Public |
9 License as published by the Free Software Foundation; either | 9 License as published by the Free Software Foundation; either |
10 version 2 of the License, or (at your option) any later version. | 10 version 2 of the License, or (at your option) any later version. |
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53 class XSLStyleSheetResource; | 53 class XSLStyleSheetResource; |
54 class Document; | 54 class Document; |
55 class DocumentLoader; | 55 class DocumentLoader; |
56 class Frame; | 56 class Frame; |
57 class FrameLoader; | 57 class FrameLoader; |
58 class ImageLoader; | 58 class ImageLoader; |
59 class KURL; | 59 class KURL; |
60 class ResourceTimingInfo; | 60 class ResourceTimingInfo; |
61 class ResourceLoaderSet; | 61 class ResourceLoaderSet; |
62 | 62 |
| 63 enum CORSEnabled { |
| 64 NotCORSEnabled, |
| 65 PotentiallyCORSEnabled // Indicates "potentially CORS-enabled fetch" in HTML
standard. |
| 66 }; |
| 67 |
63 // The ResourceFetcher provides a per-context interface to the MemoryCache | 68 // The ResourceFetcher provides a per-context interface to the MemoryCache |
64 // and enforces a bunch of security checks and rules for resource revalidation. | 69 // and enforces a bunch of security checks and rules for resource revalidation. |
65 // Its lifetime is roughly per-DocumentLoader, in that it is generally created | 70 // Its lifetime is roughly per-DocumentLoader, in that it is generally created |
66 // in the DocumentLoader constructor and loses its ability to generate network | 71 // in the DocumentLoader constructor and loses its ability to generate network |
67 // requests when the DocumentLoader is destroyed. Documents also hold a | 72 // requests when the DocumentLoader is destroyed. Documents also hold a |
68 // RefPtr<ResourceFetcher> for their lifetime (and will create one if they | 73 // RefPtr<ResourceFetcher> for their lifetime (and will create one if they |
69 // are initialized without a Frame), so a Document can keep a ResourceFetcher | 74 // are initialized without a Frame), so a Document can keep a ResourceFetcher |
70 // alive past detach if scripts still reference the Document. | 75 // alive past detach if scripts still reference the Document. |
71 class ResourceFetcher : public RefCounted<ResourceFetcher>, public ResourceLoade
rHost { | 76 class ResourceFetcher : public RefCounted<ResourceFetcher>, public ResourceLoade
rHost { |
72 WTF_MAKE_NONCOPYABLE(ResourceFetcher); WTF_MAKE_FAST_ALLOCATED; | 77 WTF_MAKE_NONCOPYABLE(ResourceFetcher); WTF_MAKE_FAST_ALLOCATED; |
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121 void garbageCollectDocumentResources(); | 126 void garbageCollectDocumentResources(); |
122 | 127 |
123 int requestCount() const { return m_requestCount; } | 128 int requestCount() const { return m_requestCount; } |
124 | 129 |
125 bool isPreloaded(const String& urlString) const; | 130 bool isPreloaded(const String& urlString) const; |
126 void clearPreloads(); | 131 void clearPreloads(); |
127 void clearPendingPreloads(); | 132 void clearPendingPreloads(); |
128 void preload(Resource::Type, FetchRequest&, const String& charset); | 133 void preload(Resource::Type, FetchRequest&, const String& charset); |
129 void checkForPendingPreloads(); | 134 void checkForPendingPreloads(); |
130 void printPreloadStats(); | 135 void printPreloadStats(); |
131 bool canAccess(Resource*); | 136 bool canAccess(Resource*, CORSEnabled, FetchRequest::OriginRestriction = Fet
chRequest::UseDefaultOriginRestrictionForType); |
132 | 137 |
133 void setDefersLoading(bool); | 138 void setDefersLoading(bool); |
134 void stopFetching(); | 139 void stopFetching(); |
135 bool isFetching() const; | 140 bool isFetching() const; |
136 | 141 |
137 // ResourceLoaderHost | 142 // ResourceLoaderHost |
138 virtual void incrementRequestCount(const Resource*) OVERRIDE; | 143 virtual void incrementRequestCount(const Resource*) OVERRIDE; |
139 virtual void decrementRequestCount(const Resource*) OVERRIDE; | 144 virtual void decrementRequestCount(const Resource*) OVERRIDE; |
140 virtual void didLoadResource(Resource*) OVERRIDE; | 145 virtual void didLoadResource(Resource*) OVERRIDE; |
141 virtual void redirectReceived(Resource*, const ResourceResponse&) OVERRIDE; | 146 virtual void redirectReceived(Resource*, const ResourceResponse&) OVERRIDE; |
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169 void storeResourceTimingInitiatorInformation(const ResourcePtr<Resource>&, c
onst FetchRequest&); | 174 void storeResourceTimingInitiatorInformation(const ResourcePtr<Resource>&, c
onst FetchRequest&); |
170 void requestPreload(Resource::Type, FetchRequest&, const String& charset); | 175 void requestPreload(Resource::Type, FetchRequest&, const String& charset); |
171 | 176 |
172 enum RevalidationPolicy { Use, Revalidate, Reload, Load }; | 177 enum RevalidationPolicy { Use, Revalidate, Reload, Load }; |
173 RevalidationPolicy determineRevalidationPolicy(Resource::Type, ResourceReque
st&, bool forPreload, Resource* existingResource, FetchRequest::DeferOption) con
st; | 178 RevalidationPolicy determineRevalidationPolicy(Resource::Type, ResourceReque
st&, bool forPreload, Resource* existingResource, FetchRequest::DeferOption) con
st; |
174 | 179 |
175 void determineTargetType(ResourceRequest&, Resource::Type); | 180 void determineTargetType(ResourceRequest&, Resource::Type); |
176 ResourceRequestCachePolicy resourceRequestCachePolicy(const ResourceRequest&
, Resource::Type); | 181 ResourceRequestCachePolicy resourceRequestCachePolicy(const ResourceRequest&
, Resource::Type); |
177 void addAdditionalRequestHeaders(ResourceRequest&, Resource::Type); | 182 void addAdditionalRequestHeaders(ResourceRequest&, Resource::Type); |
178 | 183 |
179 bool canRequest(Resource::Type, const KURL&, const ResourceLoaderOptions&, b
ool forPreload = false); | 184 bool canRequest(Resource::Type, const KURL&, const ResourceLoaderOptions&, b
ool forPreload, FetchRequest::OriginRestriction); |
180 bool checkInsecureContent(Resource::Type, const KURL&, MixedContentBlockingT
reatment) const; | 185 bool checkInsecureContent(Resource::Type, const KURL&, MixedContentBlockingT
reatment) const; |
181 | 186 |
182 static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPo
licy); | 187 static bool resourceNeedsLoad(Resource*, const FetchRequest&, RevalidationPo
licy); |
183 | 188 |
184 void notifyLoadedFromMemoryCache(Resource*); | 189 void notifyLoadedFromMemoryCache(Resource*); |
185 | 190 |
186 void garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>*); | 191 void garbageCollectDocumentResourcesTimerFired(Timer<ResourceFetcher>*); |
187 void performPostLoadActions(); | 192 void performPostLoadActions(); |
188 | 193 |
189 bool clientDefersImage(const KURL&) const; | 194 bool clientDefersImage(const KURL&) const; |
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237 m_loader->m_allowStaleResources = m_previousState; | 242 m_loader->m_allowStaleResources = m_previousState; |
238 } | 243 } |
239 private: | 244 private: |
240 ResourceFetcher* m_loader; | 245 ResourceFetcher* m_loader; |
241 bool m_previousState; | 246 bool m_previousState; |
242 }; | 247 }; |
243 | 248 |
244 } // namespace WebCore | 249 } // namespace WebCore |
245 | 250 |
246 #endif | 251 #endif |
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