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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 "AccessControlList.h"
#include "EventTarget.h"
#include "ResourceResponse.h"
#include "SubresourceLoaderClient.h"
#include <wtf/OwnPtr.h>
namespace WebCore {
class Document;
class TextResourceDecoder;
// these exact numeric values are important because JS expects them
enum XMLHttpRequestState {
UNSENT = 0, // The object has been constructed.
OPENED = 1, // The open() method has been successfully invoked. During this state request headers can be set using setRequestHeader() and the request can be made using the send() method.
HEADERS_RECEIVED = 2, // All HTTP headers have been received. Several response members of the object are now available.
LOADING = 3, // The response entity body is being received.
DONE = 4 // The data transfer has been completed or something went wrong during the transfer (such as infinite redirects)..
};
class XMLHttpRequest : public RefCounted<XMLHttpRequest>, public EventTarget, private SubresourceLoaderClient {
public:
static PassRefPtr<XMLHttpRequest> create(Document *document) { return adoptRef(new XMLHttpRequest(document)); }
~XMLHttpRequest();
virtual XMLHttpRequest* toXMLHttpRequest() { return this; }
static void detachRequests(Document*);
static void cancelRequests(Document*);
String statusText(ExceptionCode&) const;
int status(ExceptionCode&) const;
XMLHttpRequestState readyState() const;
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(const String& body, ExceptionCode&);
void abort();
void setRequestHeader(const String& name, const String& value, ExceptionCode&);
void overrideMimeType(const String& override);
String getAllResponseHeaders(ExceptionCode&) const;
String getResponseHeader(const String& name, ExceptionCode&) const;
const KJS::UString& responseText() const;
Document* responseXML() const;
void setOnReadyStateChangeListener(PassRefPtr<EventListener>);
EventListener* onReadyStateChangeListener() const;
void setOnLoadListener(PassRefPtr<EventListener>);
EventListener* onLoadListener() const;
void setOnProgressListener(PassRefPtr<EventListener>);
EventListener* onProgressListener() const;
typedef Vector<RefPtr<EventListener> > ListenerVector;
typedef HashMap<AtomicStringImpl*, 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&, bool tempEvent = false);
EventListenersMap& eventListeners() { return m_eventListeners; }
void dispatchProgressEvent(long long expectedLength);
Document* document() const { return m_doc; }
using RefCounted<XMLHttpRequest>::ref;
using RefCounted<XMLHttpRequest>::deref;
private:
XMLHttpRequest(Document*);
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual void willSendRequest(SubresourceLoader*, ResourceRequest& request, const ResourceResponse& redirectResponse);
virtual void didReceiveResponse(SubresourceLoader*, const ResourceResponse&);
virtual void didReceiveData(SubresourceLoader*, const char* data, int size);
virtual void didFail(SubresourceLoader*, const ResourceError&);
virtual void didFinishLoading(SubresourceLoader*);
virtual void receivedCancellation(SubresourceLoader*, const AuthenticationChallenge&);
// Special versions for the method check preflight
void didReceiveResponseMethodCheck(SubresourceLoader*, const ResourceResponse&);
void didFinishLoadingMethodCheck(SubresourceLoader*);
void processSyncLoadResults(const Vector<char>& data, const ResourceResponse&, ExceptionCode&);
void updateAndDispatchOnProgress(unsigned int len);
String responseMIMEType() const;
bool responseIsXML() const;
String getRequestHeader(const String& name) const;
void setRequestHeaderInternal(const String& name, const String& value);
void changeState(XMLHttpRequestState newState);
void callReadyStateChangeListener();
void dropProtection();
void internalAbort();
void clearResponseEntityBody();
void sameOriginRequest(const String& body, ResourceRequest&);
void crossSiteAccessRequest(const String& body, ResourceRequest&, ExceptionCode&);
void loadRequestSynchronously(ResourceRequest&, ExceptionCode&);
void loadRequestAsynchronously(ResourceRequest&);
void handleAsynchronousMethodCheckResult();
String accessControlOrigin() const;
void genericError();
void networkError();
void abortError();
Document* m_doc;
RefPtr<EventListener> m_onReadyStateChangeListener;
RefPtr<EventListener> m_onLoadListener;
RefPtr<EventListener> m_onProgressListener;
EventListenersMap m_eventListeners;
KURL m_url;
String m_method;
HTTPHeaderMap m_requestHeaders;
String m_mimeTypeOverride;
bool m_async;
RefPtr<SubresourceLoader> m_loader;
XMLHttpRequestState m_state;
ResourceResponse m_response;
String m_responseEncoding;
RefPtr<TextResourceDecoder> m_decoder;
unsigned long m_identifier;
// Unlike most strings in the DOM, we keep this as a KJS::UString, 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.
KJS::UString m_responseText;
mutable bool m_createdDocument;
mutable RefPtr<Document> m_responseXML;
bool m_error;
bool m_sameOriginRequest;
bool m_allowAccess;
bool m_inMethodCheck;
// FIXME: Add support for AccessControlList in a PI in an XML document in addition to the http header.
OwnPtr<AccessControlList> m_httpAccessControlList;
// Used for onprogress tracking
long long m_receivedLength;
};
} // namespace WebCore
#endif // XMLHttpRequest_h
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