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/*
* Copyright (C) 2013 Google Inc. All rights reserved.
* Copyright (C) 2013-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#pragma once
#include "EventContext.h"
#include "PseudoElement.h"
#include "SVGElement.h"
#include "SVGUseElement.h"
#include <wtf/Forward.h>
#include <wtf/Vector.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class EventPath;
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::EventPath> : std::true_type { };
}
namespace WebCore {
class Touch;
class EventPath : public CanMakeSingleThreadWeakPtr<EventPath> {
public:
EventPath(Node& origin, Event&);
explicit EventPath(const Vector<EventTarget*>&);
explicit EventPath(EventTarget&);
bool isEmpty() const { return m_path.isEmpty(); }
size_t size() const { return m_path.size(); }
const EventContext& contextAt(size_t i) const { return m_path[i]; }
EventContext& contextAt(size_t i) { return m_path[i]; }
void adjustForDisabledFormControl();
Vector<Ref<EventTarget>> computePathUnclosedToTarget(const EventTarget&) const;
static Node* eventTargetRespectingTargetRules(Node&);
private:
void buildPath(Node& origin, Event&);
void setRelatedTarget(Node& origin, Node&);
#if ENABLE(TOUCH_EVENTS)
void retargetTouch(EventContext::TouchListType, const Touch&);
void retargetTouchList(EventContext::TouchListType, const TouchList*);
void retargetTouchLists(const TouchEvent&);
#endif
Vector<EventContext, 32> m_path;
};
inline Node* EventPath::eventTargetRespectingTargetRules(Node& referenceNode)
{
if (auto* pseudoElement = dynamicDowncast<PseudoElement>(referenceNode))
return pseudoElement->hostElement();
// Events sent to elements inside an SVG use element's shadow tree go to the use element.
if (auto* svgElement = dynamicDowncast<SVGElement>(referenceNode)) {
if (auto useElement = svgElement->correspondingUseElement())
return useElement.get();
}
return &referenceNode;
}
} // namespace WebCore
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