1/*
2 * Copyright (C) 2011 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#ifndef TrackBase_h
27#define TrackBase_h
28
29#if ENABLE(VIDEO_TRACK)
30
31#include "EventTarget.h"
32#include <wtf/RefCounted.h>
33
34namespace WebCore {
35
36class Element;
37class HTMLMediaElement;
38
39class TrackBase : public RefCounted<TrackBase> {
40public:
41    virtual ~TrackBase();
42
43    enum Type { BaseTrack, TextTrack, AudioTrack, VideoTrack };
44    Type type() const { return m_type; }
45
46    void setMediaElement(HTMLMediaElement* element) { m_mediaElement = element; }
47    HTMLMediaElement* mediaElement() { return m_mediaElement; }
48    virtual Element* element();
49
50    AtomicString kind() const { return m_kind; }
51    virtual void setKind(const AtomicString&);
52
53    AtomicString label() const { return m_label; }
54    void setLabel(const AtomicString& label) { m_label = label; }
55
56    AtomicString language() const { return m_language; }
57    void setLanguage(const AtomicString& language) { m_language = language; }
58
59    virtual void clearClient() = 0;
60
61protected:
62    TrackBase(Type, const AtomicString& label, const AtomicString& language);
63
64    virtual bool isValidKind(const AtomicString&) const = 0;
65    virtual const AtomicString& defaultKindKeyword() const = 0;
66
67    HTMLMediaElement* m_mediaElement;
68
69private:
70    Type m_type;
71    AtomicString m_kind;
72    AtomicString m_label;
73    AtomicString m_language;
74};
75
76} // namespace WebCore
77
78#endif
79#endif // TrackBase_h
80