1/*
2 * Copyright (C) 2005, 2006, 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 "AppendNodeCommand.h"
28
29#include "AXObjectCache.h"
30#include "Document.h"
31#include "ExceptionCodePlaceholder.h"
32#include "htmlediting.h"
33
34namespace WebCore {
35
36AppendNodeCommand::AppendNodeCommand(PassRefPtr<ContainerNode> parent, PassRefPtr<Node> node)
37    : SimpleEditCommand(parent->document())
38    , m_parent(parent)
39    , m_node(node)
40{
41    ASSERT(m_parent);
42    ASSERT(m_node);
43    ASSERT(!m_node->parentNode());
44
45    ASSERT(m_parent->rendererIsEditable() || !m_parent->attached());
46}
47
48static void sendAXTextChangedIgnoringLineBreaks(Node* node, AXObjectCache::AXTextChange textChange)
49{
50    String nodeValue = node->nodeValue();
51    // Don't consider linebreaks in this command
52    if (nodeValue == "\n")
53      return;
54
55    if (AXObjectCache* cache = node->document()->existingAXObjectCache())
56        cache->nodeTextChangeNotification(node, textChange, 0, nodeValue);
57}
58
59void AppendNodeCommand::doApply()
60{
61    if (!m_parent->rendererIsEditable() && m_parent->attached())
62        return;
63
64    m_parent->appendChild(m_node.get(), IGNORE_EXCEPTION, AttachLazily);
65
66    if (AXObjectCache::accessibilityEnabled())
67        sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextInserted);
68}
69
70void AppendNodeCommand::doUnapply()
71{
72    if (!m_parent->rendererIsEditable())
73        return;
74
75    // Need to notify this before actually deleting the text
76    if (AXObjectCache::accessibilityEnabled())
77        sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextDeleted);
78
79    m_node->remove(IGNORE_EXCEPTION);
80}
81
82#ifndef NDEBUG
83void AppendNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
84{
85    addNodeAndDescendants(m_parent.get(), nodes);
86    addNodeAndDescendants(m_node.get(), nodes);
87}
88#endif
89
90} // namespace WebCore
91