1/*
2 * Copyright (C) 2005, 2008 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "InsertNodeBeforeCommand.h"
28
29#include "AXObjectCache.h"
30#include "Document.h"
31#include "ExceptionCodePlaceholder.h"
32#include "htmlediting.h"
33
34namespace WebCore {
35
36InsertNodeBeforeCommand::InsertNodeBeforeCommand(PassRefPtr<Node> insertChild, PassRefPtr<Node> refChild,
37    ShouldAssumeContentIsAlwaysEditable shouldAssumeContentIsAlwaysEditable)
38    : SimpleEditCommand(refChild->document())
39    , m_insertChild(insertChild)
40    , m_refChild(refChild)
41    , m_shouldAssumeContentIsAlwaysEditable(shouldAssumeContentIsAlwaysEditable)
42{
43    ASSERT(m_insertChild);
44    ASSERT(!m_insertChild->parentNode());
45    ASSERT(m_refChild);
46    ASSERT(m_refChild->parentNode());
47
48    ASSERT(m_refChild->parentNode()->rendererIsEditable() || !m_refChild->parentNode()->attached());
49}
50
51void InsertNodeBeforeCommand::doApply()
52{
53    ContainerNode* parent = m_refChild->parentNode();
54    if (!parent || (m_shouldAssumeContentIsAlwaysEditable == DoNotAssumeContentIsAlwaysEditable && !parent->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable)))
55        return;
56    ASSERT(parent->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable));
57
58    parent->insertBefore(m_insertChild.get(), m_refChild.get(), IGNORE_EXCEPTION, AttachLazily);
59
60    if (AXObjectCache* cache = document()->existingAXObjectCache())
61        cache->nodeTextChangeNotification(m_insertChild.get(), AXObjectCache::AXTextInserted, 0, m_insertChild->nodeValue());
62}
63
64void InsertNodeBeforeCommand::doUnapply()
65{
66    if (!m_insertChild->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable))
67        return;
68
69    // Need to notify this before actually deleting the text
70    if (AXObjectCache* cache = document()->existingAXObjectCache())
71        cache->nodeTextChangeNotification(m_insertChild.get(), AXObjectCache::AXTextDeleted, 0, m_insertChild->nodeValue());
72
73    m_insertChild->remove(IGNORE_EXCEPTION);
74}
75
76#ifndef NDEBUG
77void InsertNodeBeforeCommand::getNodesInCommand(HashSet<Node*>& nodes)
78{
79    addNodeAndDescendants(m_insertChild.get(), nodes);
80    addNodeAndDescendants(m_refChild.get(), nodes);
81}
82#endif
83
84}
85