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 "core/editing/DeleteFromTextNodeCommand.h"
28
29 #include "bindings/core/v8/ExceptionState.h"
30 #include "bindings/core/v8/ExceptionStatePlaceholder.h"
31 #include "core/dom/Text.h"
32
33 namespace blink {
34
DeleteFromTextNodeCommand(PassRefPtrWillBeRawPtr<Text> node,unsigned offset,unsigned count)35 DeleteFromTextNodeCommand::DeleteFromTextNodeCommand(PassRefPtrWillBeRawPtr<Text> node, unsigned offset, unsigned count)
36 : SimpleEditCommand(node->document())
37 , m_node(node)
38 , m_offset(offset)
39 , m_count(count)
40 {
41 ASSERT(m_node);
42 ASSERT(m_offset <= m_node->length());
43 ASSERT(m_offset + m_count <= m_node->length());
44 }
45
doApply()46 void DeleteFromTextNodeCommand::doApply()
47 {
48 ASSERT(m_node);
49
50 if (!m_node->isContentEditable(Node::UserSelectAllIsAlwaysNonEditable))
51 return;
52
53 TrackExceptionState exceptionState;
54 m_text = m_node->substringData(m_offset, m_count, exceptionState);
55 if (exceptionState.hadException())
56 return;
57
58 m_node->deleteData(m_offset, m_count, exceptionState, CharacterData::DeprecatedRecalcStyleImmediatlelyForEditing);
59 }
60
doUnapply()61 void DeleteFromTextNodeCommand::doUnapply()
62 {
63 ASSERT(m_node);
64
65 if (!m_node->hasEditableStyle())
66 return;
67
68 m_node->insertData(m_offset, m_text, IGNORE_EXCEPTION, CharacterData::DeprecatedRecalcStyleImmediatlelyForEditing);
69 }
70
trace(Visitor * visitor)71 void DeleteFromTextNodeCommand::trace(Visitor* visitor)
72 {
73 visitor->trace(m_node);
74 SimpleEditCommand::trace(visitor);
75 }
76
77 } // namespace blink
78