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/*
* Copyright (C) 2009 Ericsson AB
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name of Ericsson nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef EventSource_h
#define EventSource_h
#if ENABLE(EVENTSOURCE)
#include "ActiveDOMObject.h"
#include "AtomicStringHash.h"
#include "EventListener.h"
#include "EventNames.h"
#include "EventTarget.h"
#include "KURL.h"
#include "ThreadableLoaderClient.h"
#include "Timer.h"
#include <wtf/HashMap.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class ResourceResponse;
class TextResourceDecoder;
class ThreadableLoader;
class EventSource : public RefCounted<EventSource>, public EventTarget, private ThreadableLoaderClient, public ActiveDOMObject {
public:
static PassRefPtr<EventSource> create(const String& url, ScriptExecutionContext* context, ExceptionCode& ec) { return adoptRef(new EventSource(url, context, ec)); }
virtual ~EventSource();
static const unsigned long long defaultReconnectDelay;
String url() const;
enum State {
CONNECTING = 0,
OPEN = 1,
CLOSED = 2,
};
State readyState() const;
void setOnopen(PassRefPtr<EventListener> eventListener) { m_attributeListeners.set(eventNames().openEvent, eventListener); }
EventListener* onopen() const { return m_attributeListeners.get(eventNames().openEvent).get(); }
void setOnmessage(PassRefPtr<EventListener> eventListener) { m_attributeListeners.set(eventNames().messageEvent, eventListener); }
EventListener* onmessage() const { return m_attributeListeners.get(eventNames().messageEvent).get(); }
void setOnerror(PassRefPtr<EventListener> eventListener) { m_attributeListeners.set(eventNames().errorEvent, eventListener); }
EventListener* onerror() const { return m_attributeListeners.get(eventNames().errorEvent).get(); }
void close();
using RefCounted<EventSource>::ref;
using RefCounted<EventSource>::deref;
virtual EventSource* toEventSource() { return this; }
virtual ScriptExecutionContext* scriptExecutionContext() const;
typedef Vector<RefPtr<EventListener> > ListenerVector;
typedef HashMap<AtomicString, ListenerVector> EventListenersMap;
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; }
virtual void stop();
private:
EventSource(const String& url, ScriptExecutionContext* context, ExceptionCode& ec);
virtual void refEventTarget() { ref(); }
virtual void derefEventTarget() { deref(); }
virtual void didReceiveResponse(const ResourceResponse& response);
virtual void didReceiveData(const char* data, int length);
virtual void didFinishLoading(unsigned long);
virtual void didFail(const ResourceError& error);
virtual void didFailRedirectCheck();
void connect();
void endRequest();
void scheduleReconnect();
void reconnectTimerFired(Timer<EventSource>*);
void parseEventStream();
void parseEventStreamLine(unsigned int pos, int fieldLength, int lineLength);
void dispatchGenericEvent(const AtomicString& type);
void dispatchMessageEvent();
KURL m_url;
State m_state;
HashMap<AtomicString, RefPtr<EventListener> > m_attributeListeners;
EventListenersMap m_eventListeners;
RefPtr<TextResourceDecoder> m_decoder;
RefPtr<ThreadableLoader> m_loader;
Timer<EventSource> m_reconnectTimer;
Vector<UChar> m_receiveBuf;
bool m_failSilently;
bool m_requestInFlight;
String m_eventName;
Vector<UChar> m_data;
String m_lastEventId;
unsigned long long m_reconnectDelay;
String m_origin;
};
} // namespace WebCore
#endif // ENABLE(EVENTSOURCE)
#endif // EventSource_h
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