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/*
* Copyright (C) 2007, 2015 Apple Inc. All rights reserved.
* (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
*
* 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 "ContainerNode.h"
#include <wtf/Assertions.h>
namespace WebCore {
// FIXME: Delete this class after fixing FormListedElement to avoid calling getElementById during a tree removal.
#if ASSERT_ENABLED
class ContainerChildRemovalScope {
public:
ContainerChildRemovalScope(ContainerNode& parentOfRemovedTree, Node& child)
: m_parentOfRemovedTree(parentOfRemovedTree)
, m_removedChild(child)
, m_previousScope(s_scope)
{
s_scope = this;
}
~ContainerChildRemovalScope()
{
s_scope = m_previousScope;
}
ContainerNode& parentOfRemovedTree() { return m_parentOfRemovedTree; }
Node& removedChild() { return m_removedChild; }
static ContainerChildRemovalScope* currentScope() { return s_scope; }
private:
ContainerNode& m_parentOfRemovedTree;
Node& m_removedChild;
ContainerChildRemovalScope* m_previousScope;
static ContainerChildRemovalScope* s_scope;
};
#else // not ASSERT_ENABLED
class ContainerChildRemovalScope {
public:
ContainerChildRemovalScope(ContainerNode&, Node&) { }
};
#endif // not ASSERT_ENABLED
void notifyChildNodeInserted(ContainerNode& parentOfInsertedTree, Node&, NodeVector& postInsertionNotificationTargets);
inline void updateCanDelayNodeDeletion(ContainerNode::CanDelayNodeDeletion& currentCanDelayDeletion, ContainerNode::CanDelayNodeDeletion newStatus);
enum class RemovedSubtreeObservability : bool {
NotObservable,
MaybeObservableByRefPtr,
};
struct RemovedSubtreeResult {
unsigned subTreeSize;
RemovedSubtreeObservability removedSubtreeObservability;
ContainerNode::CanDelayNodeDeletion canBeDelayed;
};
RemovedSubtreeResult notifyChildNodeRemoved(ContainerNode& oldParentOfRemovedTree, Node&);
void removeDetachedChildrenInContainer(ContainerNode&);
enum class SubframeDisconnectPolicy : bool {
RootAndDescendants,
DescendantsOnly
};
void disconnectSubframes(ContainerNode& root, SubframeDisconnectPolicy);
inline void disconnectSubframesIfNeeded(ContainerNode& root, SubframeDisconnectPolicy policy)
{
if (!root.connectedSubframeCount())
return;
disconnectSubframes(root, policy);
}
inline void updateCanDelayNodeDeletion(ContainerNode::CanDelayNodeDeletion& currentCanDelayDeletion, ContainerNode::CanDelayNodeDeletion newStatus)
{
if (newStatus == ContainerNode::CanDelayNodeDeletion::No)
currentCanDelayDeletion = ContainerNode::CanDelayNodeDeletion::No;
}
} // namespace WebCore
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