Added MedialibModels but still are disabled because they don't work.

MedialibItem.h

@@ -0,0 +1,62 @@
+#ifndef __MEDIALIBITEM_H__
+#define __MEDIALIBITEM_H__
+
+#include <QStringList>
+
+class MedialibItem {
+	public:
+		enum MedialibItemType {
+			NoneItem,
+			ArtistItem,
+			AlbumItem,
+			SongItem
+		};
+
+		MedialibItem (const QStringList &text = QStringList (), MedialibItem *parent = NULL, MedialibItemType type = NoneItem) {
+			m_text = text;
+			m_type = type;
+			m_parent = parent;
+			if (parent) {
+				parent->m_childs.append (this);
+			}
+		};
+
+		bool mayHaveChilds () const {
+			if (m_type == NoneItem || m_type == SongItem)
+				return false;
+			return true;
+		};
+
+		QString data (int c) const {
+			if (m_text.size () > c) {
+				return m_text.at (c);
+			}
+			return QString ();
+		};
+
+		MedialibItem *child (int c) const {
+			return m_childs.value (c);
+		}
+
+		int childCount () const {
+			return m_childs.count ();
+		};
+
+		MedialibItem *parent () const {
+			return m_parent;
+		};
+
+		int row () const {
+			if (m_parent)
+				return m_parent->m_childs.indexOf (const_cast<MedialibItem*> (this));
+			return 0;
+		}
+
+	private:
+		MedialibItemType m_type;
+		QStringList m_text;
+		MedialibItem *m_parent;
+		QList<MedialibItem *> m_childs;
+};
+
+#endif