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/*
* Copyright (C) 2015-2019 Apple Inc. 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 Apple Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 <functional>
#include <wtf/Function.h>
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/RunLoop.h>
#include <wtf/StdSet.h>
#include <wtf/ThreadSafeRefCounted.h>
namespace WebCore {
class WheelEventTestMonitor : public ThreadSafeRefCounted<WheelEventTestMonitor> {
WTF_MAKE_NONCOPYABLE(WheelEventTestMonitor); WTF_MAKE_FAST_ALLOCATED;
public:
WheelEventTestMonitor();
WEBCORE_EXPORT void setTestCallbackAndStartNotificationTimer(WTF::Function<void()>&&);
WEBCORE_EXPORT void clearAllTestDeferrals();
enum DeferReason {
RubberbandInProgress = 1 << 0,
ScrollSnapInProgress = 1 << 1,
ScrollingThreadSyncNeeded = 1 << 2,
ContentScrollInProgress = 1 << 3
};
typedef const void* ScrollableAreaIdentifier;
WEBCORE_EXPORT void deferForReason(ScrollableAreaIdentifier, DeferReason);
WEBCORE_EXPORT void removeDeferralForReason(ScrollableAreaIdentifier, DeferReason);
void triggerTestTimerFired();
using ScrollableAreaReasonMap = WTF::HashMap<ScrollableAreaIdentifier, OptionSet<DeferReason>>;
private:
WTF::Function<void()> m_completionCallback;
RunLoop::Timer<WheelEventTestMonitor> m_testForCompletionTimer;
mutable Lock m_reasonsLock;
ScrollableAreaReasonMap m_deferCompletionReasons;
};
WTF::TextStream& operator<<(WTF::TextStream&, WheelEventTestMonitor::DeferReason);
WTF::TextStream& operator<<(WTF::TextStream&, const WheelEventTestMonitor::ScrollableAreaReasonMap&);
} // namespace WebCore