Add initial version of PlayList class.

src/main/java/moe/nekojimi/chords/Playlist.java

@@ -0,0 +1,64 @@
+/*
+ * Copyright (C) 2022 jimj316
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package moe.nekojimi.chords;
+
+import com.amihaiemil.eoyaml.YamlMapping;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ *
+ * @author jimj316
+ */
+public class Playlist
+{
+
+    private final String name;
+    private final List<Song> songs = new ArrayList<>();
+
+    public Playlist(String name)
+    {
+        this.name = name;
+    }
+
+    public YamlMapping toYaml()
+    {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    public static Playlist fromYaml(YamlMapping yaml)
+    {
+        throw new UnsupportedOperationException("Not supported yet.");
+    }
+
+    public void addSong(Song song)
+    {
+        song.setKept(true);
+        songs.add(song);
+    }
+
+    public String getName()
+    {
+        return name;
+    }
+
+    public List<Song> getSongs()
+    {
+        return songs;
+    }
+
+}