/*
* Adds all songs by artistName to the blockTable. Full block.
*/
public void addArtist(Artist artist)
{
if (artist.ArtistName == null || artist.ArtistName.Length == 0)
{
throw new ArgumentException("Null or zero-length artist name specified.");
}
else if (dict.ContainsKey(artist) && dict[artist] != null)
{
count = count - dict[artist].Count + 1; // remove all the songs from the count, but add 1 for the new artist block
dict[artist] = null;
}
else if (!dict.ContainsKey(artist))
{
dict.Add(artist, null);
count++;
}
}
/*
* Adds song by artistName to the blockTable. Single block.
*/
public void addSong(Song song)
{
if (song.ArtistName == null || song.SongTitle == null || song.ArtistName.Length == 0 || song.SongTitle.Length == 0)
{
throw new ArgumentException("Null or zero-length artist or song specified.");
}
else
{
Artist reqArtist = new Artist(song.ArtistName);
if (dict.ContainsKey(reqArtist) && dict[reqArtist] == null) return; // artist's songs are all blocked, ignore and return
if (!dict.ContainsKey(reqArtist))
{
dict.Add(reqArtist, new HashSet<Song>());
}
dict[reqArtist].Add(song);
count++;
}
}
/*
* Just a shortcut to remove an old artist->add a new artist
*/
public void updateArtist(Artist oldArtist, Artist newArtist)
{
removeArtist(oldArtist);
addArtist(newArtist);
}
/*
* Removes song by artistName from the blockTable.
*/
public void removeSong(Song song)
{
if (song.ArtistName == null || song.SongTitle == null || song.ArtistName.Length == 0 || song.SongTitle.Length == 0)
{
throw new ArgumentException("Null or zero-length artist or song specified.");
}
Artist reqArtist = new Artist(song.ArtistName);
if (dict.ContainsKey(reqArtist))
{
if (dict[reqArtist] == null) return; // can't remove one song from a globally blocked artist.
dict[reqArtist].Remove(song);
count--;
}
}
/*
* Removes artistName from the blockTable and all of its associated songs.
*/
public void removeArtist(Artist artist)
{
if (artist == null || artist.ArtistName.Length == 0)
{
throw new ArgumentException("Null or zero-length artist name specified.");
}
else if(dict.ContainsKey(artist))
{
if (dict[artist] != null)
count -= dict[artist].Count; // subtract the number of songs by artist
else
count--; // if we blocked all the songs by the artist, just subtract 1 (for the artist itself)
dict.Remove(artist);
}
}
/*
* Does the blockTable contain song by artistName?
*/
public Boolean contains(Song song)
{
if (song == null || song.ArtistName == null || song.SongTitle == null)
{
return false;
}
Artist reqArtist = new Artist(song.ArtistName);
return dict.ContainsKey(reqArtist) && (dict[reqArtist] == null || dict[reqArtist].Contains(song)); // true if the artistname is in the dict, and we either have an artist full block or the artist's dictionary object contains the song...
}
private void removeSongButton_Click(object sender, EventArgs e)
{
if (blockedListBox.SelectedItems.Count == 0) return;
while(blockedListBox.SelectedItems.Count > 0)
{
BlockableItemBase currSelectedItem = (BlockableItemBase)blockedListBox.SelectedItems[0];
if (currSelectedItem.SongTitle == null)
{
Artist currSelectedArtist = new Artist(currSelectedItem.ArtistName);
spotControl.getBlockTable().removeArtist(currSelectedArtist);
}
else
{
spotControl.getBlockTable().removeSong((Song)currSelectedItem);
}
blockedListBox.Items.Remove(currSelectedItem);
spotControl.checkCurrentSong();
}
MessageBox.Show(this, "Removed selected song(s) successfully.", "SpotMute - Remove");
}
