private async void sChanged(object sender, ScrollViewerViewChangedEventArgs sve)
{
await Task.Run(async() =>
{
ScrollViewer sv = (ScrollViewer)sender;
//Debug.WriteLine(sv.ScrollableHeight + " , " + sv.VerticalOffset);
if (sv.VerticalOffset >= sv.ScrollableHeight - 2000 && !loading)
{
loading = true;
/*App.Progress.IsActive = true;
App.Progress.Visibility = Windows.UI.Xaml.Visibility.Visible;*/
FacebookClient _fb = new FacebookClient(session.accessToken);
dynamic parameters = new ExpandoObject();
parameters.access_token = session.accessToken;
dynamic result = null;
try
{
result = await _fb.GetTaskAsync(nextPage, parameters);
}
catch (FacebookOAuthException e)
{
Debug.WriteLine("Problem: " + e.StackTrace);
/*App.Progress.IsActive = false;
App.Progress.Visibility = Windows.UI.Xaml.Visibility.Collapsed;*/
loading = false;
return;
}
var friendResult = (IDictionary<string, object>)result;
var data = (IEnumerable<object>)friendResult["data"];
foreach (var item in data)
{
var posts = (IDictionary<string, object>)item;
await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{
FacebookPost post = new FacebookPost(posts, session.userSession);
feedStack.Children.Add(post);
});
}
Debug.WriteLine(friendResult + "\n\n" + nextPage);
nextPage = (String)((IDictionary<string, object>)friendResult["paging"])["next"];
/*App.Progress.IsActive = false;
App.Progress.Visibility = Windows.UI.Xaml.Visibility.Collapsed;*/
loading = false;
}
});
}
public async void FbFeed(ListItemTemplate session)
{
FacebookClient _fb = new FacebookClient(session.accessToken);
dynamic parameters = new ExpandoObject();
parameters.access_token = session.accessToken;
dynamic result = null;
try{
result = await _fb.GetTaskAsync("me/home", parameters);
}
catch (FacebookOAuthException e)
{
Debug.WriteLine("Problem: \n" + e.Message);
App.Progress.IsActive = false;
App.Progress.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
return;
}
var friendResult = (IDictionary<string, object>)result;
var data = (IEnumerable<object>)friendResult["data"];
FacebookFeed fbFeed = new FacebookFeed(session);
foreach (var item in data)
{
var posts = (IDictionary<string, object>)item;
FacebookPost post = new FacebookPost(posts, session.userSession);
fbFeed.feedStack.Children.Add(post);
}
fbFeed.nextPage = (String)((IDictionary<string, object>)friendResult["paging"])["next"];
fbFeed.previousPage = (String)((IDictionary<string, object>)friendResult["paging"])["previous"];
await Task.Run(() => { fbFeed.realtimeUpdate(); });
await Task.Run(() => { fbFeed.timeUpdate(); });
rightPane.Children.Add(fbFeed);
App.Progress.IsActive = false;
App.Progress.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
}
internal async void realtimeUpdate()
{
while (App.running)
{
await Task.Delay(TimeSpan.FromSeconds(5));
try
{
dynamic parameters = new ExpandoObject();
parameters.access_token = session.accessToken;
dynamic result = null;
try
{
result = await session.userSession._fb.GetTaskAsync(previousPage, parameters);
}
catch (FacebookOAuthException e)
{
Debug.WriteLine("Problem: \n" + e.Message);
App.Progress.IsActive = false;
App.Progress.Visibility = Windows.UI.Xaml.Visibility.Collapsed;
return;
}
var friendResult = (IDictionary<string, object>)result;
var data = (IEnumerable<object>)friendResult["data"];
int i = 0;
foreach (var item in data)
{
var posts = (IDictionary<string, object>)item;
FacebookPost post = null;
await this.Dispatcher.RunAsync(CoreDispatcherPriority.Normal, () =>
{ post = new FacebookPost(posts, session.userSession);
this.feedStack.Children.Insert(i, post);
});
i++;
}
previousPage = (String)((IDictionary<string, object>)friendResult["paging"])["previous"];
}
catch (Exception e)
{
}
}
}
