ScrollLatchingState.cpp   [plain text]

/*
 * Copyright (C) 2014 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.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``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 INC. 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.
 */

#include "config.h"
#include "ScrollLatchingState.h"

#include "Element.h"
#include <wtf/text/TextStream.h>

namespace WebCore {

ScrollLatchingState::ScrollLatchingState() = default;
    
ScrollLatchingState::~ScrollLatchingState() = default;

void ScrollLatchingState::clear()
{
    m_wheelEventElement = nullptr;
    m_frame = nullptr;
    m_scrollableContainer = nullptr;
    m_widgetIsLatched = false;
    m_previousWheelScrolledElement = nullptr;
}

void ScrollLatchingState::setWheelEventElement(Element* element)
{
    m_wheelEventElement = makeWeakPtr(element);
}

void ScrollLatchingState::setWidgetIsLatched(bool isOverWidget)
{
    m_widgetIsLatched = isOverWidget;
}

void ScrollLatchingState::setPreviousWheelScrolledElement(Element* element)
{
    m_previousWheelScrolledElement = makeWeakPtr(element);
}

void ScrollLatchingState::setScrollableContainer(ContainerNode* container)
{
    m_scrollableContainer = makeWeakPtr(container);
}

TextStream& operator<<(TextStream& ts, const ScrollLatchingState& state)
{
    TextStream multilineStream;
    multilineStream.setIndent(ts.indent() + 2);

    multilineStream.dumpProperty("element", state.wheelEventElement());
    multilineStream.dumpProperty("previousElement", state.previousWheelScrolledElement());
    multilineStream.dumpProperty("scrollable container", state.scrollableContainer());
    multilineStream.dumpProperty("widgetIsLatched", state.widgetIsLatched());
    multilineStream.dumpProperty("started at limit", state.startedGestureAtScrollLimit());

    ts << "ScrollLatchingState " << multilineStream.release();

    return ts;
}

}