1/*
2 * Copyright (C) 2005, 2008, 2015 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 "DeleteFromTextNodeCommand.h"
28
29#include "Editing.h"
30#include "Document.h"
31#include "Text.h"
32
33namespace WebCore {
34
35DeleteFromTextNodeCommand::DeleteFromTextNodeCommand(Ref<Text>&& node, unsigned offset, unsigned count, EditAction editingAction)
36 : SimpleEditCommand(node->document(), editingAction)
37 , m_node(WTFMove(node))
38 , m_offset(offset)
39 , m_count(count)
40{
41 ASSERT(m_offset <= m_node->length());
42 ASSERT(m_offset + m_count <= m_node->length());
43}
44
45void DeleteFromTextNodeCommand::doApply()
46{
47 if (!isEditableNode(m_node))
48 return;
49
50 auto result = m_node->substringData(m_offset, m_count);
51 if (result.hasException())
52 return;
53 m_text = result.releaseReturnValue();
54 m_node->deleteData(m_offset, m_count);
55}
56
57void DeleteFromTextNodeCommand::doUnapply()
58{
59 if (!m_node->hasEditableStyle())
60 return;
61
62 m_node->insertData(m_offset, m_text);
63}
64
65#ifndef NDEBUG
66void DeleteFromTextNodeCommand::getNodesInCommand(HashSet<Node*>& nodes)
67{
68 addNodeAndDescendants(m_node.ptr(), nodes);
69}
70#endif
71
72} // namespace WebCore
73