86 lines
2.7 KiB
C++
86 lines
2.7 KiB
C++
/*
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* Copyright (C) 2007, 2015 Apple Inc. All rights reserved.
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* (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
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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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*/
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#pragma once
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#include "ContainerNode.h"
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#include <wtf/Assertions.h>
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namespace WebCore {
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// FIXME: Delete this class after fixing FormAssociatedElement to avoid calling getElementById during a tree removal.
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#if ASSERT_ENABLED
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class ContainerChildRemovalScope {
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public:
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ContainerChildRemovalScope(ContainerNode& parentOfRemovedTree, Node& child)
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: m_parentOfRemovedTree(parentOfRemovedTree)
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, m_removedChild(child)
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, m_previousScope(s_scope)
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{
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s_scope = this;
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}
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~ContainerChildRemovalScope()
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{
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s_scope = m_previousScope;
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}
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ContainerNode& parentOfRemovedTree() { return m_parentOfRemovedTree; }
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Node& removedChild() { return m_removedChild; }
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static ContainerChildRemovalScope* currentScope() { return s_scope; }
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private:
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ContainerNode& m_parentOfRemovedTree;
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Node& m_removedChild;
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ContainerChildRemovalScope* m_previousScope;
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static ContainerChildRemovalScope* s_scope;
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};
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#else // not ASSERT_ENABLED
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class ContainerChildRemovalScope {
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public:
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ContainerChildRemovalScope(ContainerNode&, Node&) { }
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};
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#endif // not ASSERT_ENABLED
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NodeVector notifyChildNodeInserted(ContainerNode& parentOfInsertedTree, Node&);
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enum class RemovedSubtreeObservability {
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NotObservable,
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MaybeObservableByRefPtr,
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};
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RemovedSubtreeObservability notifyChildNodeRemoved(ContainerNode& oldParentOfRemovedTree, Node&);
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void removeDetachedChildrenInContainer(ContainerNode&);
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enum SubframeDisconnectPolicy {
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RootAndDescendants,
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DescendantsOnly
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};
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void disconnectSubframes(ContainerNode& root, SubframeDisconnectPolicy);
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inline void disconnectSubframesIfNeeded(ContainerNode& root, SubframeDisconnectPolicy policy)
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{
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if (!root.connectedSubframeCount())
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return;
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disconnectSubframes(root, policy);
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}
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} // namespace WebCore
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