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/*
* Copyright (C) 2003, 2006, 2008 Apple Inc. All rights reserved.
* Copyright (C) 2005, 2006 Alexey Proskuryakov <ap@nypop.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XMLHttpRequest_h
#define XMLHttpRequest_h
#include "ActiveDOMObject.h"
#include "AtomicStringHash.h"
#include "EventListener.h"
#include "EventTarget.h"
#include "FormData.h"
#include "ResourceResponse.h"
#include "ScriptString.h"
#include "ThreadableLoaderClient.h"
#include <wtf/OwnPtr.h>
namespace WebCore {
class Document;
class File;
struct ResourceRequest;
class TextResourceDecoder;
class ThreadableLoader;
class XMLHttpRequest : public RefCounted<XMLHttpRequest>, public EventTarget, private ThreadableLoaderClient, public ActiveDOMObject {
public:
static PassRefPtr<XMLHttpRequest> create(ScriptExecutionContext* context) { return adoptRef(new XMLHttpRequest(context)); }
~XMLHttpRequest();
// These exact numeric values are important because JS expects them.
enum State {
UNSENT = 0,
OPENED = 1,
HEADERS_RECEIVED = 2,
LOADING = 3,
DONE = 4
};
virtual XMLHttpRequest* toXMLHttpRequest() { return this; }
virtual void contextDestroyed();
virtual bool canSuspend() const;
virtual void stop();
virtual ScriptExecutionContext* scriptExecutionContext() const;
String statusText(ExceptionCode&) const;
int status(ExceptionCode&) const;
State readyState() const;
bool withCredentials() const { return m_includeCredentials; }
void setWithCredentials(bool, ExceptionCode&);
void open(const String& method, const KURL&, bool async, ExceptionCode&);
void open(const String& method, const KURL&, bool async, const String& user, ExceptionCode&);
void open(const String& method, const KURL&, bool async, const String& user, const String& password, ExceptionCode&);
void send(ExceptionCode&);
void send(Document*, ExceptionCode&);
void send(const String&, ExceptionCode&);
void send(File*, ExceptionCode&);
void abort();
void setRequestHeader(const AtomicString& name, const String& value, ExceptionCode&);
void overrideMimeType(const String& override);
String getAllResponseHeaders(ExceptionCode&) const;
String getResponseHeader(const AtomicString& name, ExceptionCode&) const;
const ScriptString& responseText() const;
Document* responseXML() const;
void setLastSendLineNumber(unsigned lineNumber) { m_lastSendLineNumber = lineNumber; }
void setLastSendURL(const String& url) { m_lastSendURL = url; }
XMLHttpRequestUpload* upload();
XMLHttpRequestUpload* optionalUpload() const { return m_upload.get(); }
void setOnreadystatechange(PassRefPtr<EventListener> eventListener) { m_onReadyStateChangeListener = eventListener; }
EventListener* onreadystatechange() const { return m_onReadyStateChangeListener.get(); }
void setOnabort(PassRefPtr<EventListener> eventListener) { m_onAbortListener = eventListener; }
EventListener* onabort() const { return m_onAbortListener.get(); }
void setOnerror(PassRefPtr<EventListener> eventListener) { m_onErrorListener = eventListener; }
EventListener* onerror() const { return m_onErrorListener.get(); }
void setOnload(PassRefPtr<EventListener> eventListener) { m_onLoadListener = eventListener; }
EventListener* onload() const { return m_onLoadListener.get(); }
void setOnloadstart(PassRefPtr<EventListener> eventListener) { m_onLoadStartListener = eventListener; }
EventListener* onloadstart() const { return m_onLoadStartListener.get(); }
void setOnprogress(PassRefPtr<EventListener> eventListener) { m_onProgressListener = eventListener; }
EventListener* onprogress() const { return m_onProgressListener.get(); }
typedef Vector<RefPtr<EventListener> > ListenerVector;
typedef HashMap<AtomicString, ListenerVector> EventListenersMap;
// useCapture is not used, even for add/remove pairing (for Firefox compatibility).
virtual void addEventListener(const AtomicString& eventType, PassRefPtr<EventListener>, bool useCapture);
virtual void removeEventListener(const AtomicString& eventType, EventListener*, bool useCapture);
virtual bool dispatchEvent(PassRefPtr<Event>, ExceptionCode&);
EventListenersMap& eventListeners() { return m_eventListeners; }
using RefCounted<XMLHttpRequest>::ref;
using RefCounted<XMLHttpRequest>::deref;
private:
XMLHttpRequest(ScriptExecutionContext*);
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
Document* document() const;
#if ENABLE(DASHBOARD_SUPPORT)
bool usesDashboardBackwardCompatibilityMode() const;
#endif
virtual void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent);
virtual void didReceiveResponse(const ResourceResponse&);
virtual void didReceiveData(const char* data, int lengthReceived);
virtual void didFinishLoading(unsigned long identifier);
virtual void didFail(const ResourceError&);
virtual void didFailRedirectCheck();
virtual void didReceiveAuthenticationCancellation(const ResourceResponse&);
// Special versions for the preflight
void didReceiveResponsePreflight(const ResourceResponse&);
void didFinishLoadingPreflight();
void updateAndDispatchOnProgress(unsigned int len);
String responseMIMEType() const;
bool responseIsXML() const;
bool initSend(ExceptionCode&);
String getRequestHeader(const AtomicString& name) const;
void setRequestHeaderInternal(const AtomicString& name, const String& value);
bool isSafeRequestHeader(const String&) const;
void changeState(State newState);
void callReadyStateChangeListener();
void dropProtection();
void internalAbort();
void clearResponse();
void clearRequest();
void createRequest(ExceptionCode&);
void makeSameOriginRequest(ExceptionCode&);
void makeCrossOriginAccessRequest(ExceptionCode&);
void makeSimpleCrossOriginAccessRequest(ExceptionCode&);
void makeCrossOriginAccessRequestWithPreflight(ExceptionCode&);
void handleAsynchronousPreflightResult();
void loadRequestSynchronously(ResourceRequest&, ExceptionCode&);
void loadRequestAsynchronously(ResourceRequest&);
void genericError();
void networkError();
void abortError();
void dispatchReadyStateChangeEvent();
void dispatchXMLHttpRequestProgressEvent(EventListener* listener, const AtomicString& type, bool lengthComputable, unsigned loaded, unsigned total);
void dispatchAbortEvent();
void dispatchErrorEvent();
void dispatchLoadEvent();
void dispatchLoadStartEvent();
void dispatchProgressEvent(long long expectedLength);
RefPtr<EventListener> m_onReadyStateChangeListener;
RefPtr<EventListener> m_onAbortListener;
RefPtr<EventListener> m_onErrorListener;
RefPtr<EventListener> m_onLoadListener;
RefPtr<EventListener> m_onLoadStartListener;
RefPtr<EventListener> m_onProgressListener;
EventListenersMap m_eventListeners;
RefPtr<XMLHttpRequestUpload> m_upload;
KURL m_url;
String m_method;
HTTPHeaderMap m_requestHeaders;
RefPtr<FormData> m_requestEntityBody;
String m_mimeTypeOverride;
bool m_async;
bool m_includeCredentials;
RefPtr<ThreadableLoader> m_loader;
State m_state;
ResourceResponse m_response;
String m_responseEncoding;
RefPtr<TextResourceDecoder> m_decoder;
// Unlike most strings in the DOM, we keep this as a ScriptString, not a WebCore::String.
// That's because these strings can easily get huge (they are filled from the network with
// no parsing) and because JS can easily observe many intermediate states, so it's very useful
// to be able to share the buffer with JavaScript versions of the whole or partial string.
// In contrast, this string doesn't interact much with the rest of the engine so it's not that
// big a cost that it isn't a String.
ScriptString m_responseText;
mutable bool m_createdDocument;
mutable RefPtr<Document> m_responseXML;
bool m_error;
bool m_uploadEventsAllowed;
bool m_uploadComplete;
bool m_sameOriginRequest;
bool m_allowAccess;
bool m_inPreflight;
bool m_didTellLoaderAboutRequest;
// Used for onprogress tracking
long long m_receivedLength;
unsigned m_lastSendLineNumber;
String m_lastSendURL;
ExceptionCode m_exceptionCode;
};
} // namespace WebCore
#endif // XMLHttpRequest_h
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