blob: 11dcbd0db155e0450005621a0517476d2b9293a0 [file] [log] [blame]
/*
* 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.
*/
#pragma once
#include <wtf/RefPtr.h>
namespace WebCore {
class ContainerNode;
class Element;
class Frame;
class ScrollLatchingState final {
public:
ScrollLatchingState();
~ScrollLatchingState();
void clear();
Element* wheelEventElement() { return m_wheelEventElement.get(); }
void setWheelEventElement(Element*);
Frame* frame() { return m_frame; }
void setFrame(Frame* frame) { m_frame = frame; }
bool widgetIsLatched() const { return m_widgetIsLatched; }
void setWidgetIsLatched(bool isOverWidget);
Element* previousWheelScrolledElement() { return m_previousWheelScrolledElement.get(); }
void setPreviousWheelScrolledElement(Element*);
ContainerNode* scrollableContainer() { return m_scrollableContainer.get(); }
void setScrollableContainer(ContainerNode*);
bool startedGestureAtScrollLimit() const { return m_startedGestureAtScrollLimit; }
void setStartedGestureAtScrollLimit(bool startedAtLimit) { m_startedGestureAtScrollLimit = startedAtLimit; }
private:
RefPtr<Element> m_wheelEventElement;
RefPtr<Element> m_previousWheelScrolledElement;
RefPtr<ContainerNode> m_scrollableContainer;
Frame* m_frame { nullptr };
bool m_widgetIsLatched { false };
bool m_startedGestureAtScrollLimit { false };
};
} // namespace WebCore