public static IDisposable BindAvatarLoading(
this EntryModel model,
IAvatarLoader avatarLoader)
{
if (model.Avatar == null)
{
model.Avatar = GetAvatar(avatarLoader, model);
if (model.Avatar == null || model.Avatar.IsFallback)
{
return(LoadAvatar(avatarLoader, model)
.Accept(avatar =>
{
model.Avatar = avatar;
}));
}
}
return(Disposable.Empty);
}
private static IObservable <Avatar> LoadAvatar(IAvatarLoader avatarLoader, EntryModel entry)
{
switch (entry)
{
case HomeEntryModel _:
return(avatarLoader.LoadAvatar(
AvatarKind.Home,
AvatarSize.Small));
case ChatEntryModel chatEntryModel:
return(avatarLoader.LoadAvatar(chatEntryModel.Chat.ChatData, AvatarSize.Small));
case AggregateEntryModel aggregateEntryModel:
return(avatarLoader.LoadAvatar(new TdApi.Chat
{
Id = aggregateEntryModel.Aggregate.Id
},
AvatarSize.Small));
}
return(Observable.Empty <Avatar>());
}
private static Avatar GetAvatar(IAvatarLoader avatarLoader, EntryModel entry)
{
switch (entry)
{
case HomeEntryModel _:
return(avatarLoader.GetAvatar(
AvatarKind.Home,
AvatarSize.Small));
case ChatEntryModel chatEntryModel:
return(avatarLoader.GetAvatar(chatEntryModel.Chat.ChatData, AvatarSize.Small));
case AggregateEntryModel aggregateEntryModel:
return(avatarLoader.GetAvatar(new TdApi.Chat
{
Id = aggregateEntryModel.Aggregate.Id
},
AvatarSize.Small));
}
return(null);
}