tagunion.h
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1 /***************************************************************************
2  copyright : (C) 2002 - 2008 by Scott Wheeler
3  email : wheeler@kde.org
4  ***************************************************************************/
5 
6 /***************************************************************************
7  * This library is free software; you can redistribute it and/or modify *
8  * it under the terms of the GNU Lesser General Public License version *
9  * 2.1 as published by the Free Software Foundation. *
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11  * This library is distributed in the hope that it will be useful, but *
12  * WITHOUT ANY WARRANTY; without even the implied warranty of *
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU *
14  * Lesser General Public License for more details. *
15  * *
16  * You should have received a copy of the GNU Lesser General Public *
17  * License along with this library; if not, write to the Free Software *
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA *
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20  * *
21  * Alternatively, this file is available under the Mozilla Public *
22  * License Version 1.1. You may obtain a copy of the License at *
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25 
26 #ifndef TAGLIB_TAGUNION_H
27 #define TAGLIB_TAGUNION_H
28 
29 #include "tag.h"
30 
31 #ifndef DO_NOT_DOCUMENT
32 
33 namespace TagLib {
34 
39  class TagUnion : public Tag
40  {
41  public:
42 
43  enum AccessType { Read, Write };
44 
50  TagUnion(Tag *first = 0, Tag *second = 0, Tag *third = 0);
51 
52  virtual ~TagUnion();
53 
54  Tag *operator[](int index) const;
55  Tag *tag(int index) const;
56 
57  void set(int index, Tag *tag);
58 
59  PropertyMap properties() const;
60  void removeUnsupportedProperties(const StringList &unsupported);
61 
62  virtual String title() const;
63  virtual String artist() const;
64  virtual String album() const;
65  virtual String comment() const;
66  virtual String genre() const;
67  virtual unsigned int year() const;
68  virtual unsigned int track() const;
69 
70  virtual void setTitle(const String &s);
71  virtual void setArtist(const String &s);
72  virtual void setAlbum(const String &s);
73  virtual void setComment(const String &s);
74  virtual void setGenre(const String &s);
75  virtual void setYear(unsigned int i);
76  virtual void setTrack(unsigned int i);
77  virtual bool isEmpty() const;
78 
79  template <class T> T *access(int index, bool create)
80  {
81  if(!create || tag(index))
82  return static_cast<T *>(tag(index));
83 
84  set(index, new T);
85  return static_cast<T *>(tag(index));
86  }
87 
88  private:
89  TagUnion(const Tag &);
90  TagUnion &operator=(const Tag &);
91 
92  class TagUnionPrivate;
93  TagUnionPrivate *d;
94  };
95 }
96 
97 #endif
98 #endif
String TAGLIB_EXPORT genre(int index)