1 /* 2 * Copyright (C) 2003, 2006, 2008 Apple Inc. All rights reserved. 3 * Copyright (C) 2005, 2006 Alexey Proskuryakov <ap (at) nypop.com> 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General Public 16 * License along with this library; if not, write to the Free Software 17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 18 */ 19 20 #ifndef XMLHttpRequest_h 21 #define XMLHttpRequest_h 22 23 #include "ActiveDOMObject.h" 24 #include "AtomicStringHash.h" 25 #include "EventListener.h" 26 #include "EventNames.h" 27 #include "EventTarget.h" 28 #include "FormData.h" 29 #include "ResourceResponse.h" 30 #include "ScriptString.h" 31 #include "ThreadableLoaderClient.h" 32 #include <wtf/OwnPtr.h> 33 34 namespace WebCore { 35 36 class Blob; 37 class Document; 38 class ResourceRequest; 39 class TextResourceDecoder; 40 class ThreadableLoader; 41 42 class XMLHttpRequest : public RefCounted<XMLHttpRequest>, public EventTarget, private ThreadableLoaderClient, public ActiveDOMObject { 43 public: 44 static PassRefPtr<XMLHttpRequest> create(ScriptExecutionContext* context) { return adoptRef(new XMLHttpRequest(context)); } 45 ~XMLHttpRequest(); 46 47 // These exact numeric values are important because JS expects them. 48 enum State { 49 UNSENT = 0, 50 OPENED = 1, 51 HEADERS_RECEIVED = 2, 52 LOADING = 3, 53 DONE = 4 54 }; 55 56 virtual XMLHttpRequest* toXMLHttpRequest() { return this; } 57 58 virtual void contextDestroyed(); 59 virtual bool canSuspend() const; 60 virtual void stop(); 61 62 virtual ScriptExecutionContext* scriptExecutionContext() const; 63 64 String statusText(ExceptionCode&) const; 65 int status(ExceptionCode&) const; 66 State readyState() const; 67 bool withCredentials() const { return m_includeCredentials; } 68 void setWithCredentials(bool, ExceptionCode&); 69 void open(const String& method, const KURL&, bool async, ExceptionCode&); 70 void open(const String& method, const KURL&, bool async, const String& user, ExceptionCode&); 71 void open(const String& method, const KURL&, bool async, const String& user, const String& password, ExceptionCode&); 72 void send(ExceptionCode&); 73 void send(Document*, ExceptionCode&); 74 void send(const String&, ExceptionCode&); 75 void send(Blob*, ExceptionCode&); 76 void abort(); 77 void setRequestHeader(const AtomicString& name, const String& value, ExceptionCode&); 78 void overrideMimeType(const String& override); 79 String getAllResponseHeaders(ExceptionCode&) const; 80 String getResponseHeader(const AtomicString& name, ExceptionCode&) const; 81 const ScriptString& responseText() const; 82 Document* responseXML() const; 83 void setLastSendLineNumber(unsigned lineNumber) { m_lastSendLineNumber = lineNumber; } 84 void setLastSendURL(const String& url) { m_lastSendURL = url; } 85 86 XMLHttpRequestUpload* upload(); 87 XMLHttpRequestUpload* optionalUpload() const { return m_upload.get(); } 88 89 DEFINE_ATTRIBUTE_EVENT_LISTENER(readystatechange); 90 DEFINE_ATTRIBUTE_EVENT_LISTENER(abort); 91 DEFINE_ATTRIBUTE_EVENT_LISTENER(error); 92 DEFINE_ATTRIBUTE_EVENT_LISTENER(load); 93 DEFINE_ATTRIBUTE_EVENT_LISTENER(loadstart); 94 DEFINE_ATTRIBUTE_EVENT_LISTENER(progress); 95 96 using RefCounted<XMLHttpRequest>::ref; 97 using RefCounted<XMLHttpRequest>::deref; 98 99 private: 100 XMLHttpRequest(ScriptExecutionContext*); 101 102 virtual void refEventTarget() { ref(); } 103 virtual void derefEventTarget() { deref(); } 104 virtual EventTargetData* eventTargetData(); 105 virtual EventTargetData* ensureEventTargetData(); 106 107 Document* document() const; 108 109 #if ENABLE(DASHBOARD_SUPPORT) 110 bool usesDashboardBackwardCompatibilityMode() const; 111 #endif 112 113 virtual void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent); 114 virtual void didReceiveResponse(const ResourceResponse&); 115 virtual void didReceiveData(const char* data, int lengthReceived); 116 virtual void didFinishLoading(unsigned long identifier); 117 virtual void didFail(const ResourceError&); 118 virtual void didFailRedirectCheck(); 119 virtual void didReceiveAuthenticationCancellation(const ResourceResponse&); 120 121 String responseMIMEType() const; 122 bool responseIsXML() const; 123 124 bool initSend(ExceptionCode&); 125 126 String getRequestHeader(const AtomicString& name) const; 127 void setRequestHeaderInternal(const AtomicString& name, const String& value); 128 bool isSafeRequestHeader(const String&) const; 129 130 void changeState(State newState); 131 void callReadyStateChangeListener(); 132 void dropProtection(); 133 void internalAbort(); 134 void clearResponse(); 135 void clearRequest(); 136 137 void createRequest(ExceptionCode&); 138 139 void genericError(); 140 void networkError(); 141 void abortError(); 142 143 RefPtr<XMLHttpRequestUpload> m_upload; 144 145 KURL m_url; 146 String m_method; 147 HTTPHeaderMap m_requestHeaders; 148 RefPtr<FormData> m_requestEntityBody; 149 String m_mimeTypeOverride; 150 bool m_async; 151 bool m_includeCredentials; 152 153 RefPtr<ThreadableLoader> m_loader; 154 State m_state; 155 156 ResourceResponse m_response; 157 String m_responseEncoding; 158 159 RefPtr<TextResourceDecoder> m_decoder; 160 161 // Unlike most strings in the DOM, we keep this as a ScriptString, not a WebCore::String. 162 // That's because these strings can easily get huge (they are filled from the network with 163 // no parsing) and because JS can easily observe many intermediate states, so it's very useful 164 // to be able to share the buffer with JavaScript versions of the whole or partial string. 165 // In contrast, this string doesn't interact much with the rest of the engine so it's not that 166 // big a cost that it isn't a String. 167 ScriptString m_responseText; 168 mutable bool m_createdDocument; 169 mutable RefPtr<Document> m_responseXML; 170 171 bool m_error; 172 173 bool m_uploadEventsAllowed; 174 bool m_uploadComplete; 175 176 bool m_sameOriginRequest; 177 bool m_didTellLoaderAboutRequest; 178 179 // Used for onprogress tracking 180 long long m_receivedLength; 181 182 unsigned m_lastSendLineNumber; 183 String m_lastSendURL; 184 ExceptionCode m_exceptionCode; 185 186 EventTargetData m_eventTargetData; 187 }; 188 189 } // namespace WebCore 190 191 #endif // XMLHttpRequest_h 192
