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#ifndef DOMTokenList_h
26#define DOMTokenList_h
27
28#include <wtf/text/AtomicString.h>
29#include <wtf/Vector.h>
30
31namespace WebCore {
32
33class Element;
34
35typedef int ExceptionCode;
36
37class DOMTokenList {
38    WTF_MAKE_NONCOPYABLE(DOMTokenList); WTF_MAKE_FAST_ALLOCATED;
39public:
40    DOMTokenList() { }
41    virtual ~DOMTokenList() {};
42
43    virtual void ref() = 0;
44    virtual void deref() = 0;
45
46    virtual unsigned length() const = 0;
47    virtual const AtomicString item(unsigned index) const = 0;
48
49    bool contains(const AtomicString&, ExceptionCode&) const;
50    void add(const Vector<String>&, ExceptionCode&);
51    void add(const AtomicString&, ExceptionCode&);
52    void remove(const Vector<String>&, ExceptionCode&);
53    void remove(const AtomicString&, ExceptionCode&);
54    bool toggle(const AtomicString&, ExceptionCode&);
55    bool toggle(const AtomicString&, bool force, ExceptionCode&);
56
57    AtomicString toString() const { return value(); }
58
59    virtual Element* element() const { return 0; }
60
61protected:
62    virtual AtomicString value() const = 0;
63    virtual void setValue(const AtomicString&) = 0;
64
65    void addInternal(const AtomicString&);
66    virtual bool containsInternal(const AtomicString&) const = 0;
67    void removeInternal(const AtomicString&);
68
69    static bool validateToken(const AtomicString&, ExceptionCode&);
70    static bool validateTokens(const Vector<String>&, ExceptionCode&);
71    static String addToken(const AtomicString&, const AtomicString&);
72    static String addTokens(const AtomicString&, const Vector<String>&);
73    static String removeToken(const AtomicString&, const AtomicString&);
74    static String removeTokens(const AtomicString&, const Vector<String>&);
75};
76
77} // namespace WebCore
78
79#endif // DOMTokenList_h
80