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/*
* Copyright (C) 2010 Julien Chaffraix <jchaffraix@webkit.org>
* All right 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.
*
* 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.
*/
#pragma once
#include "EventLoop.h"
#include <wtf/Forward.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class Event;
class XMLHttpRequest;
enum ProgressEventAction {
DoNotFlushProgressEvent,
FlushProgressEvent
};
// This implements the XHR2 progress event dispatching: "dispatch a progress event called progress
// about every 50ms or for every byte received, whichever is least frequent".
class XMLHttpRequestProgressEventThrottle : public CanMakeWeakPtr<XMLHttpRequestProgressEventThrottle> {
public:
explicit XMLHttpRequestProgressEventThrottle(XMLHttpRequest&);
virtual ~XMLHttpRequestProgressEventThrottle();
void updateProgress(bool isAsync, bool lengthComputable, unsigned long long loaded, unsigned long long total);
void dispatchReadyStateChangeEvent(Event&, ProgressEventAction = DoNotFlushProgressEvent);
void dispatchProgressEvent(const AtomString&);
void dispatchErrorProgressEvent(const AtomString&);
void suspend();
void resume();
private:
static const Seconds minimumProgressEventDispatchingInterval;
void dispatchThrottledProgressEventTimerFired();
void flushProgressEvent();
void dispatchEventWhenPossible(Event&);
// Weak pointer to our XMLHttpRequest object as it is the one holding us.
XMLHttpRequest& m_target;
unsigned long long m_loaded { 0 };
unsigned long long m_total { 0 };
EventLoopTimerHandle m_dispatchThrottledProgressEventTimer;
bool m_hasPendingThrottledProgressEvent { false };
bool m_lengthComputable { false };
bool m_shouldDeferEventsDueToSuspension { false };
};
} // namespace WebCore
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