public Bitmap GetUserIcon(User user)
{
if (iconCache.Contains(user.Id))
{
var icon = iconCache[user.Id] as Bitmap;
if (icon != null)
return icon;
}
user.GetIcon().ThenOnUI(image => {
var policy = new CacheItemPolicy {
SlidingExpiration = TimeSpan.FromMinutes (60)
};
iconCache.Set(user.Id, image, policy);
foreach (var channel in this.Channels)
{
if (channel.Users.Any(r => r.Id == user.Id))
{
channel.TriggerUserIconChanged(new UserImageEventArgs(user, DateTimeOffset.Now, image));
}
}
});
return User.DefaultUserIcon;
}