private async Task StartLoadingPrevTweets()
{
Status status = DisplayTweet.Model;
IsLoadingPrevious = true;
while (true)
{
if (status.InReplyToStatusID == 0)
{
break;
}
var inReplyTo = await Context.Twitter.Statuses.GetTweet(status.InReplyToStatusID, true);
if (inReplyTo == null)
{
break;
}
var vm = new StatusViewModel(inReplyTo, Context, Configuration, ViewServiceRepository);
await Dispatcher.RunAsync(() => PreviousConversationTweets.Insert(0, vm));
RaisePropertyChanged(nameof(PreviousConversationTweets));
status = inReplyTo;
}
await Task.WhenAll(PreviousConversationTweets.Select(s => s.LoadDataAsync()));
IsLoadingPrevious = false;
await Dispatcher.RunAsync(() => ScrollRequested?.Invoke(this, EventArgs.Empty));
}
public async Task OnLoad(object data)
{
IsLoadingPrevious = true;
Message.WasRead = true;
var userId = Message.Partner.Model.GetUserId();
var cacheMessages = await Cache.GetMessages();
var messages = cacheMessages.Where(m => m.Recipient == userId || m.Sender == userId)
.Select(m => JsonConvert.DeserializeObject <DirectMessage>(m.Data))
.Where(m => m.GetMessageId() < Message.Id)
.OrderBy(m => m.CreatedAt);
foreach (var m in messages)
{
var msg = new MessageViewModel(m, Message.Context, Configuration, ViewServiceRepository)
{
WasRead = true
};
await Dispatcher.RunAsync(() => PreviousMessages.Add(msg));
}
RaisePropertyChanged(nameof(PreviousMessages));
IsLoadingPrevious = false;
await Dispatcher.RunAsync(() => ScrollRequested?.Invoke(this, EventArgs.Empty));
}
public void ScrollToNextPage(double animationDuration = 0.5)
{
ScrollRequested?.Invoke(animationDuration);
}