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 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 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 "RenderElement.h"
33#include "htmlediting.h"
34
35namespace WebCore {
36
37AppendNodeCommand::AppendNodeCommand(PassRefPtr<ContainerNode> parent, PassRefPtr<Node> node)
38    : SimpleEditCommand(parent->document())
39    , m_parent(parent)
40    , m_node(node)
41{
42    ASSERT(m_parent);
43    ASSERT(m_node);
44    ASSERT(!m_node->parentNode());
45
46    ASSERT(m_parent->hasEditableStyle() || !m_parent->renderer());
47}
48
49static void sendAXTextChangedIgnoringLineBreaks(Node* node, AXObjectCache::AXTextChange textChange)
50{
51    String nodeValue = node->nodeValue();
52    // Don't consider linebreaks in this command
53    if (nodeValue == "\n")
54      return;
55
56    if (AXObjectCache* cache = node->document().existingAXObjectCache())
57        cache->nodeTextChangeNotification(node, textChange, 0, nodeValue);
58}
59
60void AppendNodeCommand::doApply()
61{
62    if (!m_parent->hasEditableStyle() && m_parent->renderer())
63        return;
64
65    m_parent->appendChild(m_node.get(), IGNORE_EXCEPTION);
66
67    if (AXObjectCache::accessibilityEnabled())
68        sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextInserted);
69}
70
71void AppendNodeCommand::doUnapply()
72{
73    if (!m_parent->hasEditableStyle())
74        return;
75
76    // Need to notify this before actually deleting the text
77    if (AXObjectCache::accessibilityEnabled())
78        sendAXTextChangedIgnoringLineBreaks(m_node.get(), AXObjectCache::AXTextDeleted);
79
80    m_node->remove(IGNORE_EXCEPTION);
81}
82
83#ifndef NDEBUG
84void AppendNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
85{
86    addNodeAndDescendants(m_parent.get(), nodes);
87    addNodeAndDescendants(m_node.get(), nodes);
88}
89#endif
90
91} // namespace WebCore
92