1/*
2 * Copyright (C) 2007, 2015 Apple Inc. All rights reserved.
3 * (C) 2008 Nikolas Zimmermann <zimmermann@kde.org>
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Library General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Library General Public License for more details.
14 *
15 * You should have received a copy of the GNU Library General Public License
16 * along with this library; see the file COPYING.LIB. If not, write to
17 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 * Boston, MA 02110-1301, USA.
19 *
20 */
21
22#pragma once
23
24#include "ContainerNode.h"
25#include <wtf/Assertions.h>
26
27namespace WebCore {
28
29// FIXME: Delete this class after fixing FormAssociatedElement to avoid calling getElementById during a tree removal.
30#if !ASSERT_DISABLED
31class ContainerChildRemovalScope {
32public:
33 ContainerChildRemovalScope(ContainerNode& parentOfRemovedTree, Node& child)
34 : m_parentOfRemovedTree(parentOfRemovedTree)
35 , m_removedChild(child)
36 , m_previousScope(s_scope)
37 {
38 s_scope = this;
39 }
40
41 ~ContainerChildRemovalScope()
42 {
43 s_scope = m_previousScope;
44 }
45
46 ContainerNode& parentOfRemovedTree() { return m_parentOfRemovedTree; }
47 Node& removedChild() { return m_removedChild; }
48
49 static ContainerChildRemovalScope* currentScope() { return s_scope; }
50
51private:
52 ContainerNode& m_parentOfRemovedTree;
53 Node& m_removedChild;
54 ContainerChildRemovalScope* m_previousScope;
55 static ContainerChildRemovalScope* s_scope;
56};
57#else
58class ContainerChildRemovalScope {
59public:
60 ContainerChildRemovalScope(ContainerNode&, Node&) { }
61};
62#endif
63
64NodeVector notifyChildNodeInserted(ContainerNode& parentOfInsertedTree, Node&);
65void notifyChildNodeRemoved(ContainerNode& oldParentOfRemovedTree, Node&);
66void removeDetachedChildrenInContainer(ContainerNode&);
67
68enum SubframeDisconnectPolicy {
69 RootAndDescendants,
70 DescendantsOnly
71};
72void disconnectSubframes(ContainerNode& root, SubframeDisconnectPolicy);
73
74inline void disconnectSubframesIfNeeded(ContainerNode& root, SubframeDisconnectPolicy policy)
75{
76 if (!root.connectedSubframeCount())
77 return;
78 disconnectSubframes(root, policy);
79}
80
81} // namespace WebCore
82