/// <summary>
/// Load newer messages
/// </summary>
private async void LoadNewerMessages()
{
try
{
// Check if there are newer messages
Message last = (MessageList.Items.Last() as MessageContainer)?.Message;
if (last != null && LocalState.RPC.ContainsKey(ChannelId) && last.Id != LocalState.RPC[ChannelId].LastMessageId)
{
// Show loading indicator
MessagesLoading.Visibility = Visibility.Visible;
// Prevent a second call
DisableLoadingMessages = true;
// Get Messages
List <MessageContainer> messages = await MessageManager.ConvertMessage(
(await RESTCalls.GetChannelMessagesAfter(ChannelId,
(MessageList.Items.LastOrDefault(x => (x as MessageContainer).Message != null) as
MessageContainer).Message.Id)).ToList());
_messageStacker.ItemsUpdatingScrollMode = ItemsUpdatingScrollMode.KeepScrollOffset;
// Display messages
AddMessages(Position.After, false, messages,
_outofboundsNewMessage); //if there is an out of bounds new message, show the indicator. Otherwise, don't.
_messageStacker.ItemsUpdatingScrollMode = ItemsUpdatingScrollMode.KeepLastItemInView;
// Hide loading indicator
MessagesLoading.Visibility = Visibility.Collapsed;
// Buffer perioud for loading more messages
await Task.Delay(1000);
DisableLoadingMessages = false;
}
}
catch
{
// ignored
}
}