public static void OnAlbumImageChanged(string artistName, string albumName, AlbumImageChangedEventHandler callback)
{
var cacheName = FormatAlbumCacheName(artistName, albumName);
lock (AlbumImageChanged)
{
if (AlbumImageChanged.ContainsKey(cacheName))
{
AlbumImageChanged[cacheName] += callback;
}
else
{
AlbumImageChanged.Add(cacheName, callback);
}
}
}
public static void RemoveHandler(string artistName, string albumName, AlbumImageChangedEventHandler callback)
{
var cacheName = FormatAlbumCacheName(artistName, albumName);
lock (AlbumImageChanged)
{
if (AlbumImageChanged.TryGetValue(cacheName, out var d))
{
d -= callback;
if (d == null)
{
AlbumImageChanged.Remove(cacheName);
}
else
{
AlbumImageChanged[cacheName] = d;
}
}
}
}
