Move XMLHttpRequest related files to core/xmlhttprequest.

Source/core/xml/XMLHttpRequestProgressEventThrottle.h

-/*
- * 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.
- */
-
-#ifndef XMLHttpRequestProgressEventThrottle_h
-#define XMLHttpRequestProgressEventThrottle_h
-
-#include "platform/Timer.h"
-#include "platform/heap/Handle.h"
-#include "wtf/OwnPtr.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/Vector.h"
-#include "wtf/text/AtomicString.h"
-
-namespace blink {
-
-class Event;
-class EventTarget;
-class XMLHttpRequestProgressEvent;
-
-// This class implements the XHR2 ProgressEvent dispatching:
-//   "dispatch a progress event named progress about every 50ms or for every
-//   byte received, whichever is least frequent".
-//
-// readystatechange events also go through this class since ProgressEvents and
-// readystatechange events affect each other.
-//
-// In the comments for this class:
-// - "progress" event means an event named "progress"
-// - ProgressEvent means an event using the ProgressEvent interface defined in
-//   the spec.
-class XMLHttpRequestProgressEventThrottle final : public TimerBase {
-    DISALLOW_ALLOCATION();
-public:
-    enum DeferredEventAction {
-        Ignore,
-        Clear,
-        Flush,
-    };
-
-    explicit XMLHttpRequestProgressEventThrottle(EventTarget*);
-    virtual ~XMLHttpRequestProgressEventThrottle();
-
-    // Dispatches a ProgressEvent.
-    //
-    // Special treatment for events named "progress" is implemented to dispatch
-    // them at the required frequency. If this object is suspended, the given
-    // ProgressEvent overwrites the existing. I.e. only the latest one gets
-    // queued. If the timer is running, this method just updates
-    // m_lengthComputable, m_loaded and m_total. They'll be used on next
-    // fired() call.
-    void dispatchProgressEvent(const AtomicString&, bool lengthComputable, unsigned long long loaded, unsigned long long total);
-    // Dispatches the given event after operation about the "progress" event
-    // depending on the value of the ProgressEventAction argument.
-    void dispatchReadyStateChangeEvent(PassRefPtrWillBeRawPtr<Event>, DeferredEventAction);
-
-    void suspend();
-    void resume();
-
-    void trace(Visitor*);
-
-private:
-    // The main purpose of this class is to throttle the "progress"
-    // ProgressEvent dispatching. This class represents such a deferred
-    // "progress" ProgressEvent.
-    class DeferredEvent;
-    static const double minimumProgressEventDispatchingIntervalInSeconds;
-
-    virtual void fired() override;
-    void dispatchDeferredEvent();
-
-    // Non-Oilpan, keep a weak pointer to our XMLHttpRequest object as it is
-    // the one holding us. With Oilpan, a simple strong Member can be used -
-    // this XMLHttpRequestProgressEventThrottle (part) object dies together
-    // with the XMLHttpRequest object.
-    RawPtrWillBeMember<EventTarget> m_target;
-
-    // A slot for the deferred "progress" ProgressEvent. When multiple events
-    // arrive, only the last one is stored and others are discarded.
-    const OwnPtr<DeferredEvent> m_deferred;
-};
-
-} // namespace blink
-
-#endif // XMLHttpRequestProgressEventThrottle_h