/// <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();
}
}
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>
/// 编辑歌曲标签按钮命令
/// </summary>
/// <param name="listBox"></param>
private void SongListEditTagsMenuExecute(ListBox listBox)
{
var songListItem = listBox.SelectedItem as SongListStyle;
if (songListItem == null)
{
return;
}
var song = SongListModel.GetPlayingSong(songListItem.Song.Path);
TagsEditingWindow tagsEditingWindow = new TagsEditingWindow();
//TagsEditingWindowViewModel.TagsList =
// songListStyle?.Song.Tags != null
// ? new List<string>(songListStyle.Song.Tags)
// : new List<string>();
Songs.SongTags =
song.Tags != null
? new List <string>(song.Tags)
: new List <string>();
TagsEditingWindowViewModel tagsEditingWindowViewModel = new TagsEditingWindowViewModel();
tagsEditingWindow.DataContext = tagsEditingWindowViewModel;
tagsEditingWindow.ShowDialog();
if (tagsEditingWindow.DialogResult != true)
{
return;
}
SongListModel.ClearSongTags(songListItem.Song); //将数据库中该歌曲的标签清空
songListItem.Song.Tags = new List <string>(Songs.SongTags /*TagsEditingWindowViewModel.TagsList*/);
SongListModel.SaveSongTags(songListItem.Song);
}
/// <summary>
/// 确认选中的标签，在歌曲列表显示包含选中标签的歌曲
/// </summary>
private void OnSelectTags()
{
//Songs.SongList.Clear();
var songList = SongListModel.GetSelectedSongs();
InitialSongs = new List <SongListStyle>(SongListModel.InitialSongList(songList));
}
/// <summary>
/// 双击播放列表歌曲项或右键点击播放
/// </summary>
/// <param name="playingList"></param>
private void OnDoubleClickPlayingList(ListBox playingList)
{
var songListItem = playingList.SelectedItem as SongListStyle;
if (songListItem == null)
{
return;
}
PlayingSong = SongListModel.GetPlayingSong(songListItem.Song.Path);
if (ControlService.PlayState != PlayState.播放)
{
ControlService.PlayState = PlayState.播放;
}
}
/// <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>
/// 从目录添加歌曲
/// </summary>
private void OnAddSongSet()
{
var songList = new List <Song>();
using (var dirChooser = new System.Windows.Forms.FolderBrowserDialog())
{
if (dirChooser.ShowDialog() == System.Windows.Forms.DialogResult.OK)
{
var songModel = new SongListModel();
songList = songModel.LoadSongList(dirChooser.SelectedPath);
}
}
var initialSongs = new SongListModel();
initialSongs.SaveSongsDb(songList);
InitialSongs = new List <SongListStyle>(initialSongs.InitialSongList(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);
}
