76 lines
2.4 KiB
C++
76 lines
2.4 KiB
C++
/*
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* Copyright (C) 2013 Google Inc. All rights reserved.
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* Copyright (C) 2013-2017 Apple Inc. All rights reserved.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public License
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* along with this library; see the file COPYING.LIB. If not, write to
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* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#pragma once
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#include "EventContext.h"
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#include "PseudoElement.h"
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#include "SVGElement.h"
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#include "SVGUseElement.h"
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#include <wtf/Forward.h>
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#include <wtf/Vector.h>
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namespace WebCore {
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class Touch;
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class EventPath {
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public:
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EventPath(Node& origin, Event&);
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explicit EventPath(const Vector<EventTarget*>&);
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bool isEmpty() const { return m_path.isEmpty(); }
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size_t size() const { return m_path.size(); }
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const EventContext& contextAt(size_t i) const { return m_path[i]; }
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EventContext& contextAt(size_t i) { return m_path[i]; }
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Vector<EventTarget*> computePathUnclosedToTarget(const EventTarget&) const;
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static Node* eventTargetRespectingTargetRules(Node&);
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private:
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void buildPath(Node& origin, Event&);
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void setRelatedTarget(Node& origin, Node&);
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#if ENABLE(TOUCH_EVENTS)
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void retargetTouch(EventContext::TouchListType, const Touch&);
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void retargetTouchList(EventContext::TouchListType, const TouchList*);
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void retargetTouchLists(const TouchEvent&);
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#endif
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Vector<EventContext, 16> m_path;
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};
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inline Node* EventPath::eventTargetRespectingTargetRules(Node& referenceNode)
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{
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if (is<PseudoElement>(referenceNode))
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return downcast<PseudoElement>(referenceNode).hostElement();
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// Events sent to elements inside an SVG use element's shadow tree go to the use element.
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if (is<SVGElement>(referenceNode)) {
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if (auto useElement = downcast<SVGElement>(referenceNode).correspondingUseElement())
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return useElement.get();
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}
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return &referenceNode;
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}
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} // namespace WebCore
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