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29 #ifndef ResourceLoader_h
30 #define ResourceLoader_h
32 #include "core/fetch/ResourceLoaderOptions.h"
33 #include "platform/network/ResourceRequest.h"
34 #include "public/platform/WebURLLoader.h"
35 #include "public/platform/WebURLLoaderClient.h"
36 #include "wtf/Forward.h"
37 #include "wtf/RefCounted.h"
40 class WebThreadedDataReceiver;
48 class ResourceResponse;
49 class ResourceLoaderHost;
51 class ResourceLoader FINAL : public RefCounted<ResourceLoader>, protected blink::WebURLLoaderClient {
53 static PassRefPtr<ResourceLoader> create(ResourceLoaderHost*, Resource*, const ResourceRequest&, const ResourceLoaderOptions&);
54 virtual ~ResourceLoader();
57 void changeToSynchronous();
60 void cancel(const ResourceError&);
61 void cancelIfNotFinishing();
63 Resource* cachedResource() { return m_resource; }
64 const ResourceRequest& originalRequest() const { return m_originalRequest; }
66 void setDefersLoading(bool);
67 bool defersLoading() const { return m_defersLoading; }
69 void attachThreadedDataReceiver(PassOwnPtr<blink::WebThreadedDataReceiver>);
71 void releaseResources();
73 void didChangePriority(ResourceLoadPriority, int intraPriorityValue);
76 virtual void willSendRequest(blink::WebURLLoader*, blink::WebURLRequest&, const blink::WebURLResponse& redirectResponse) OVERRIDE;
77 virtual void didSendData(blink::WebURLLoader*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) OVERRIDE;
78 virtual void didReceiveResponse(blink::WebURLLoader*, const blink::WebURLResponse&) OVERRIDE;
79 virtual void didReceiveData(blink::WebURLLoader*, const char*, int, int encodedDataLength) OVERRIDE;
80 virtual void didReceiveCachedMetadata(blink::WebURLLoader*, const char* data, int length) OVERRIDE;
81 virtual void didFinishLoading(blink::WebURLLoader*, double finishTime, int64 encodedDataLength) OVERRIDE;
82 virtual void didFail(blink::WebURLLoader*, const blink::WebURLError&) OVERRIDE;
83 virtual void didDownloadData(blink::WebURLLoader*, int, int) OVERRIDE;
85 const KURL& url() const { return m_request.url(); }
86 bool shouldSniffContent() const { return m_options.sniffContent == SniffContent; }
87 bool isLoadedBy(ResourceLoaderHost*) const;
89 bool reachedTerminalState() const { return m_state == Terminated; }
90 const ResourceRequest& request() const { return m_request; }
92 class RequestCountTracker {
94 RequestCountTracker(ResourceLoaderHost*, Resource*);
95 RequestCountTracker(const RequestCountTracker&);
96 ~RequestCountTracker();
98 ResourceLoaderHost* m_host;
103 ResourceLoader(ResourceLoaderHost*, Resource*, const ResourceLoaderOptions&);
105 void init(const ResourceRequest&);
106 void requestSynchronously();
108 void didFinishLoadingOnePart(double finishTime, int64_t encodedDataLength);
110 bool responseNeedsAccessControlCheck() const;
112 ResourceRequest& applyOptions(ResourceRequest&) const;
114 OwnPtr<blink::WebURLLoader> m_loader;
115 RefPtrWillBePersistent<ResourceLoaderHost> m_host;
117 ResourceRequest m_request;
118 ResourceRequest m_originalRequest; // Before redirects.
120 bool m_notifiedLoadComplete;
122 bool m_defersLoading;
123 ResourceRequest m_deferredRequest;
124 ResourceLoaderOptions m_options;
126 enum ResourceLoaderState {
132 enum ConnectionState {
134 ConnectionStateStarted,
135 ConnectionStateReceivedResponse,
136 ConnectionStateReceivingData,
137 ConnectionStateFinishedLoading,
138 ConnectionStateCanceled,
139 ConnectionStateFailed,
142 Resource* m_resource;
143 ResourceLoaderState m_state;
145 // Used for sanity checking to make sure we don't experience illegal state
147 ConnectionState m_connectionState;
149 OwnPtr<RequestCountTracker> m_requestCountTracker;