1/*
2 * Copyright (C) 2010 Google 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. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25#include "config.h"
26#include "DOMSettableTokenList.h"
27
28namespace WebCore {
29
30DOMSettableTokenList::DOMSettableTokenList()
31    : m_value()
32    , m_tokens()
33{
34}
35
36DOMSettableTokenList::~DOMSettableTokenList()
37{
38}
39
40const AtomicString DOMSettableTokenList::item(unsigned index) const
41{
42    if (index >= length())
43        return AtomicString();
44    return m_tokens[index];
45}
46
47bool DOMSettableTokenList::contains(const AtomicString& token, ExceptionCode& ec) const
48{
49    if (!validateToken(token, ec))
50        return false;
51    return m_tokens.contains(token);
52}
53
54void DOMSettableTokenList::add(const AtomicString& token, ExceptionCode& ec)
55{
56    if (!validateToken(token, ec) || m_tokens.contains(token))
57        return;
58    addInternal(token);
59}
60
61void DOMSettableTokenList::addInternal(const AtomicString& token)
62{
63    m_value = addToken(m_value, token);
64    if (m_tokens.isNull())
65        m_tokens.set(token, false);
66    else
67        m_tokens.add(token);
68}
69
70void DOMSettableTokenList::remove(const AtomicString& token, ExceptionCode& ec)
71{
72    if (!validateToken(token, ec) || !m_tokens.contains(token))
73        return;
74    removeInternal(token);
75}
76
77void DOMSettableTokenList::removeInternal(const AtomicString& token)
78{
79    m_value = removeToken(m_value, token);
80    m_tokens.remove(token);
81}
82
83bool DOMSettableTokenList::toggle(const AtomicString& token, ExceptionCode& ec)
84{
85    if (!validateToken(token, ec))
86        return false;
87    if (m_tokens.contains(token)) {
88        removeInternal(token);
89        return false;
90    }
91    addInternal(token);
92    return true;
93}
94
95void DOMSettableTokenList::setValue(const String& value)
96{
97    m_value = value;
98    m_tokens.set(value, false);
99}
100
101} // namespace WebCore
102