private void OnDelPlayList(ListBox listBox)
{
var songListItem = listBox.SelectedItem as SongListStyle;
if (songListItem == null)
{
return;
}
var delSong = SongListModel.GetPlayingSong(songListItem.Song.Path);
var songList = PlayListItem.Select(i => i.Song).ToList();
songList.Remove(delSong);
PlayListItem = SongListModel.InitialSongList(songList);
IsPlayListChanged = true;
PlayingListModel.ClearPlayingList();
PlayingListModel.SavePlayingList(songList);
//若删除的歌曲为正在播放的歌曲
if (delSong.Equals(PlayingSong))
{
OnNext(); //播放下一曲
}
}
/// <summary>
/// 双击歌曲项或右键点击播放
/// </summary>
/// <param name="listBox"></param>
private void DouClickSongItemExecute(Selector listBox) //由于PlayListItem在子类中无法改变，故放于此
{
var songListItem = listBox.SelectedItem as SongListStyle;
if (songListItem != null)
{
var targetSong = SongListModel.GetPlayingSong(songListItem.Song.Path);
if (!targetSong.Equals(PlayingSong))
{
PlayingSong = targetSong;
}
//PlayingSong = SongListModel.GetPlayingSong(songListItem.Song.Path);
}
PlayListItem.Clear();
PlayListItem = new List <SongListStyle>(InitialSongs);
IsPlayListChanged = true; //播放列表被修改
PlayingListModel.ClearPlayingList();
PlayingListModel.SavePlayingList(PlayListItem.Select(i => i.Song).ToList());
if (ControlService.PlayState != PlayState.播放)
{
ControlService.PlayState = PlayState.播放;
}
else
{
ControlService.PlayService.MediaPlayer.Play();
}
}
/// <summary> 初始化歌曲列表、播放列表和初始歌曲 </summary>
private void InitialSongLists()
{
InitialSongs = SongListModel.InitialSongList(SongListModel.GetSongsDb());
PlayListItem = SongListModel.InitialSongList(PlayingListModel.GetPlayingList());
var firstOrDefault = PlayListItem.FirstOrDefault();
if (firstOrDefault != null)
{
PlayingSong = firstOrDefault.Song;
ControlService.PlayService.SongPath = PlayingSong.Path;
ControlService.PlayState = PlayState.暂停;
}
}
private void OnAddPlayList(ListBox listBox)
{
var songList = PlayListItem.Select(i => i.Song).ToList();
var songListItem = listBox.SelectedItem as SongListStyle;
if (songListItem == null)
{
return;
}
songList.Add(songListItem.Song);
PlayListItem = SongListModel.InitialSongList(songList);
IsPlayListChanged = true;
PlayingListModel.ClearPlayingList();
PlayingListModel.SavePlayingList(songList);
}
/// <summary> 播放选中标签的歌曲 </summary>
private void PlaySongExecute()
{
PlayListItem.Clear();
var songList = InitialSongs.Select(i => i.Song).ToList();
PlayListItem = SongListModel.InitialSongList(songList);
IsPlayListChanged = true;
PlayingListModel.ClearPlayingList();
PlayingListModel.SavePlayingList(songList);
if (ControlService.PlayState != PlayState.播放)
{
ControlService.PlayState = PlayState.播放;
}
}
/// <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);
}
private void ClearExecute()
{
PlayListItem = new List <SongListStyle>();
PlayingSong = new Song();
PlayingListModel.ClearPlayingList();
}
