1/*
2 * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
3 *           (C) 1999 Antti Koivisto (koivisto@kde.org)
4 *           (C) 2001 Dirk Mueller (mueller@kde.org)
5 * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
6 * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
7 * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
8 * Copyright (C) 2011 Google Inc. All rights reserved.
9 *
10 * This library is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU Library General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
14 *
15 * This library is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
18 * Library General Public License for more details.
19 *
20 * You should have received a copy of the GNU Library General Public License
21 * along with this library; see the file COPYING.LIB.  If not, write to
22 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
23 * Boston, MA 02110-1301, USA.
24 */
25#ifndef TreeScopeAdopter_h
26#define TreeScopeAdopter_h
27
28#include "Node.h"
29
30namespace WebCore {
31
32class TreeScope;
33
34class TreeScopeAdopter {
35public:
36    explicit TreeScopeAdopter(Node* toAdopt, TreeScope& newScope);
37
38    void execute() const { moveTreeToNewScope(m_toAdopt); }
39    bool needsScopeChange() const { return &m_oldScope != &m_newScope; }
40
41#ifdef NDEBUG
42    static void ensureDidMoveToNewDocumentWasCalled(Document*) { }
43#else
44    static void ensureDidMoveToNewDocumentWasCalled(Document*);
45#endif
46
47private:
48    void updateTreeScope(Node*) const;
49    void moveTreeToNewScope(Node*) const;
50    void moveShadowTreeToNewDocument(ShadowRoot*, Document* oldDocument, Document* newDocument) const;
51    void moveNodeToNewDocument(Node*, Document* oldDocument, Document* newDocument) const;
52
53    Node* m_toAdopt;
54    TreeScope& m_newScope;
55    TreeScope& m_oldScope;
56};
57
58inline TreeScopeAdopter::TreeScopeAdopter(Node* toAdopt, TreeScope& newScope)
59    : m_toAdopt(toAdopt)
60    , m_newScope(newScope)
61    , m_oldScope(toAdopt->treeScope())
62{
63}
64
65}
66
67#endif
68