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Viewing changes to Source/WebCore/page/WheelEventTestMonitor.h

  • Committer: mmach
  • Date: 2023-06-16 17:21:37 UTC
  • Revision ID: netbit73@gmail.com-20230616172137-2rqx6yr96ga9g3kp
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Source/WebCore/page/WheelEventTestMonitor.h
 
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/*
 
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 * Copyright (C) 2015-2019 Apple Inc.  All rights reserved.
 
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 *
 
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 * Redistribution and use in source and binary forms, with or without
 
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 * modification, are permitted provided that the following conditions
 
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 * are met:
 
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 *
 
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 * 1.  Redistributions of source code must retain the above copyright
 
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 *     notice, this list of conditions and the following disclaimer.
 
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 * 2.  Redistributions in binary form must reproduce the above copyright
 
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 *     notice, this list of conditions and the following disclaimer in the
 
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 *     documentation and/or other materials provided with the distribution.
 
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 * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
 
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 *     its contributors may be used to endorse or promote products derived
 
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 *     from this software without specific prior written permission.
 
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 *
 
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 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
 
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 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 
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 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
 
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 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 
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 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 
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 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
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 */
 
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#pragma once
 
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#include <functional>
 
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#include <wtf/Function.h>
 
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#include <wtf/HashMap.h>
 
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#include <wtf/Lock.h>
 
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#include <wtf/RunLoop.h>
 
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#include <wtf/StdSet.h>
 
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#include <wtf/ThreadSafeRefCounted.h>
 
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namespace WebCore {
 
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class WheelEventTestMonitor : public ThreadSafeRefCounted<WheelEventTestMonitor> {
 
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    WTF_MAKE_NONCOPYABLE(WheelEventTestMonitor); WTF_MAKE_FAST_ALLOCATED;
 
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public:
 
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    WheelEventTestMonitor();
 
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    WEBCORE_EXPORT void setTestCallbackAndStartNotificationTimer(WTF::Function<void()>&&);
 
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    WEBCORE_EXPORT void clearAllTestDeferrals();
 
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    enum DeferReason {
 
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        HandlingWheelEvent          = 1 << 0,
 
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        RubberbandInProgress        = 1 << 1,
 
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        ScrollSnapInProgress        = 1 << 2,
 
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        ScrollingThreadSyncNeeded   = 1 << 3,
 
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        ContentScrollInProgress     = 1 << 4,
 
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    };
 
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    typedef const void* ScrollableAreaIdentifier;
 
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    WEBCORE_EXPORT void deferForReason(ScrollableAreaIdentifier, DeferReason);
 
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    WEBCORE_EXPORT void removeDeferralForReason(ScrollableAreaIdentifier, DeferReason);
 
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    void triggerTestTimerFired();
 
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    using ScrollableAreaReasonMap = WTF::HashMap<ScrollableAreaIdentifier, OptionSet<DeferReason>>;
 
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private:
 
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    WTF::Function<void()> m_completionCallback;
 
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    RunLoop::Timer<WheelEventTestMonitor> m_testForCompletionTimer;
 
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    ScrollableAreaReasonMap m_deferCompletionReasons;
 
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};
 
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WTF::TextStream& operator<<(WTF::TextStream&, WheelEventTestMonitor::DeferReason);
 
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WTF::TextStream& operator<<(WTF::TextStream&, const WheelEventTestMonitor::ScrollableAreaReasonMap&);
 
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} // namespace WebCore