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295f920116
I wrote a script to do this which is attached to the bug. TBR=abarth@chromium.org BUG=435361 Review URL: https://codereview.chromium.org/736373003
121 lines
4.2 KiB
C++
121 lines
4.2 KiB
C++
/*
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* Copyright (C) 2014 Google 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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* 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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*
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* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* 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
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef SKY_ENGINE_CORE_EVENTS_TREESCOPEEVENTCONTEXT_H_
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#define SKY_ENGINE_CORE_EVENTS_TREESCOPEEVENTCONTEXT_H_
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#include "sky/engine/core/dom/Node.h"
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#include "sky/engine/core/dom/TreeScope.h"
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#include "sky/engine/core/events/EventTarget.h"
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#include "sky/engine/wtf/PassRefPtr.h"
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#include "sky/engine/wtf/RefPtr.h"
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#include "sky/engine/wtf/Vector.h"
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namespace blink {
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class EventPath;
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class EventTarget;
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class Node;
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template <typename NodeType> class StaticNodeTypeList;
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typedef StaticNodeTypeList<Node> StaticNodeList;
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class TouchEventContext;
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class TreeScope;
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class TreeScopeEventContext final : public RefCounted<TreeScopeEventContext> {
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DECLARE_EMPTY_DESTRUCTOR_WILL_BE_REMOVED(TreeScopeEventContext);
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public:
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static PassRefPtr<TreeScopeEventContext> create(TreeScope&);
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TreeScope& treeScope() const { return *m_treeScope; }
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EventTarget* target() const { return m_target.get(); }
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void setTarget(PassRefPtr<EventTarget>);
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EventTarget* relatedTarget() const { return m_relatedTarget.get(); }
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void setRelatedTarget(PassRefPtr<EventTarget>);
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TouchEventContext* touchEventContext() const { return m_touchEventContext.get(); }
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TouchEventContext* ensureTouchEventContext();
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PassRefPtr<StaticNodeList> ensureEventPath(EventPath&);
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bool isInclusiveAncestorOf(const TreeScopeEventContext&);
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void addChild(TreeScopeEventContext& child) { m_children.append(&child); }
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// For ancestor-descendant relationship check in Q(1).
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// Preprocessing takes O(N).
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int calculatePrePostOrderNumber(int orderNumber);
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private:
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TreeScopeEventContext(TreeScope&);
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#if ENABLE(ASSERT)
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bool isUnreachableNode(EventTarget&);
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#endif
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RawPtr<TreeScope> m_treeScope;
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RefPtr<EventTarget> m_target;
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RefPtr<EventTarget> m_relatedTarget;
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RefPtr<StaticNodeList> m_eventPath;
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RefPtr<TouchEventContext> m_touchEventContext;
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Vector<RawPtr<TreeScopeEventContext> > m_children;
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int m_preOrder;
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int m_postOrder;
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};
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#if ENABLE(ASSERT)
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inline bool TreeScopeEventContext::isUnreachableNode(EventTarget& target)
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{
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// FIXME: Checks also for SVG elements.
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return target.toNode() && !target.toNode()->treeScope().isInclusiveOlderSiblingShadowRootOrAncestorTreeScopeOf(treeScope());
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}
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#endif
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inline void TreeScopeEventContext::setTarget(PassRefPtr<EventTarget> target)
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{
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ASSERT(target);
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ASSERT(!isUnreachableNode(*target));
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m_target = target;
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}
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inline void TreeScopeEventContext::setRelatedTarget(PassRefPtr<EventTarget> relatedTarget)
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{
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ASSERT(relatedTarget);
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ASSERT(!isUnreachableNode(*relatedTarget));
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m_relatedTarget = relatedTarget;
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}
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inline bool TreeScopeEventContext::isInclusiveAncestorOf(const TreeScopeEventContext& other)
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{
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ASSERT(m_preOrder != -1 && m_postOrder != -1 && other.m_preOrder != -1 && other.m_postOrder != -1);
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return m_preOrder <= other.m_preOrder && other.m_postOrder <= m_postOrder;
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}
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}
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#endif // SKY_ENGINE_CORE_EVENTS_TREESCOPEEVENTCONTEXT_H_
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