/// <summary>
/// reset method.
/// change the current playlist that is showed to the user
/// to the original playlist that he entered with to the
/// editor.
/// </summary>
public void reset()
{
CurrentPlayList.Songs.Clear();
CurrentGeners.Clear();
TempoList.Clear();
foreach (Song item in OriginalPlayList.Songs)
{
CurrentPlayList.Songs.Add(item);
}
resolveGenres(CurrentPlayList);
resolveTempo(CurrentPlayList);
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("VM_GetPlayList"));
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Vm_CurrentGenres"));
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Vm_TempoList"));
}
/// <summary>
/// Filter method.
/// filter playlist according to user choice.
/// first check for generes that user want, than clear
/// the collection that the playlist is based on and add
/// the appropriate songs to the playlist, and notify the viewmodel
/// </summary>
public void Filter()
{
List <string> genres = choosenGenres();
List <string> tempoes = chosenTempo();
if (genres.Count == 0 && tempoes.Count == 0)
{
return;
}
ObservableCollection <Song> temp = new ObservableCollection <Song>(CurrentPlayList.Songs);
CurrentPlayList.Songs.Clear();
foreach (Song song in temp)
{
if (genres.Count == 0 && tempoes.Count != 0)
{
string tempo = tempoType(song);
if (tempoes.Contains(tempo))
{
CurrentPlayList.Songs.Add(song);
continue;
}
}
if (genres.Contains(song.Artist.Genre))
{
if (tempoes.Count == 0)
{
CurrentPlayList.Songs.Add(song);
}
else
{
string tempo = tempoType(song);
if (tempoes.Contains(tempo))
{
CurrentPlayList.Songs.Add(song);
}
}
}
}
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("VM_GetPlayList"));
CurrentGeners.Clear();
resolveGenres(CurrentPlayList);
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Vm_CurrentGenres"));
TempoList.Clear();
resolveTempo(CurrentPlayList);
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Vm_TempoList"));
}
/// <summary>
/// remove the choosen song from the playlist.
/// </summary>
public void RemoveSong()
{
if (SongRemove != null)
{
foreach (Song item in CurrentPlayList.Songs)
{
if (item.ID == SongRemove.ID)
{
CurrentPlayList.Songs.Remove(item);
break;
}
}
CurrentGeners.Clear();
TempoList.Clear();
resolveGenres(CurrentPlayList);
resolveTempo(CurrentPlayList);
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("VM_GetPlayList"));
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Vm_CurrentGenres"));
this.PropertyChanged?.Invoke(this, new PropertyChangedEventArgs("Vm_TempoList"));
}
}
/// <summary>
/// resolveGeners method.
/// resolve the generes from a given playlist
/// </summary>
/// <param name="playList">playlist</param>
public void resolveGenres(SongPlaylist playList)
{
bool flag = true;
foreach (Song item in playList.Songs)
{
foreach (ExtensionInfo ex in CurrentGeners)
{
if (ex.Extension.Equals(item.Artist.Genre))
{
flag = false;
break;
}
}
if (flag)
{
CurrentGeners.Add(new ExtensionInfo(item.Artist.Genre, 0));
}
flag = true;
}
}