protected void OnLast()
{
if (PlayListItem == null || PlayListItem.Count == 0)
{
return;
}
var songList = PlayListItem.Select(i => i.Song).ToList();
var playingIndex = songList.IndexOf(PlayingSong);
if (PlayMode == PlayMode.随机播放 && IsPlayListChanged)
{
PlayModeService.ChangeRandomList(songList);
IsPlayListChanged = false;
}
PlayingSong = PlayModeService.OnLastExecute(PlayMode, songList, playingIndex);
if (ControlService.PlayState != PlayState.播放)
{
ControlService.PlayState = PlayState.播放;
}
else
{
ControlService.PlayService.MediaPlayer.Play();
}
}
private void OnModeChange()
{
PlayMode = PlayModeService.OnModeChange(PlayMode);
if (PlayMode == PlayMode.随机播放)
{
PlayModeService.ChangeRandomList(PlayListItem.Select(i => i.Song).ToList());
}
}
private void MediaEnd(object sender, EventArgs e)
{
if (PlayListItem == null || PlayListItem.Count == 0)
{
return;
}
var songList = PlayListItem.Select(i => i.Song).ToList();
var playingIndex = songList.IndexOf(PlayingSong);
if (PlayMode == PlayMode.随机播放 && IsPlayListChanged)
{
PlayModeService.ChangeRandomList(songList);
IsPlayListChanged = false;
}
PlayingSong = PlayModeService.GetNextSong(PlayMode, songList, playingIndex);
ControlService.PlayService.MediaPlayer.Play();
}
/// <summary>
/// 先初始化构造函数，再初始化属性
/// </summary>
public TagsSelectService()
{
SongListModel = new SongListModel();
PlayingListModel = new PlayingListModel();
ControlService = new ControlService();
PlayMode = PlayMode.列表循环;
InitialSongs = new List <SongListStyle>();
PlayListItem = new List <SongListStyle>();
InitialSongLists();
PlayModeService = new PlayModeService(PlayMode);
ControlService.PlayService.MediaPlayer.MediaEnded += MediaEnd;
SelectTagsCommand = new DelegateCommand(OnSelectTags);
PlaySongCommand = new DelegateCommand(PlaySongExecute);
AddSongSetCommand = new DelegateCommand(OnAddSongSet);
NextCommand = new DelegateCommand(OnNext);
LastCommand = new DelegateCommand(OnLast);
ModeChangeCommand = new DelegateCommand(OnModeChange);
SelectTagCommand = new DelegateCommand <Button>(SelectTagExecute);
TestCommand = new DelegateCommand(TestExecute);
PlayPauseCommand = new DelegateCommand(OnPlayPause);
}