private void OnItemAppearing(object sender, ItemVisibilityEventArgs e)
{
if (ItemAppearingCommand != null)
{
ItemAppearingCommand?.Execute(e.Item);
}
}
private void OnItemAppearing(object sender, ItemVisibilityEventArgs e)
{
if (ItemAppearingCommand != null)
{
ItemAppearingCommand?.Execute(e.Item);
}
if (LoadMoreCommand != null)
{
if (IsGroupingEnabled)
{
if (PageSize == null)
{
var firstItem = ((IList)ItemsSource.Cast <object>().First()).Cast <object>().First();
if (e.Item == firstItem && !IsRefreshing)
{
LoadMoreCommand?.Execute(null);
}
}
else
{
var firstItem = ((IList)ItemsSource.Cast <object>().First()).Cast <object>().First();
var totalItems = 0;
foreach (var item in ItemsSource.Cast <object>())
{
totalItems = totalItems + ((IList)item).Cast <object>().Count();
}
if (e.Item == firstItem && !IsRefreshing
& totalItems >= PageSize.Value)
{
LoadMoreCommand?.Execute(null);
}
}
}
else
{
if (PageSize == null)
{
if (e.Item == ItemsSource.Cast <object>().First() && !IsRefreshing)
{
LoadMoreCommand?.Execute(null);
}
}
else
{
if (e.Item == ItemsSource.Cast <object>().First() && !IsRefreshing
& ItemsSource.Cast <object>().Count() >= PageSize.Value)
{
LoadMoreCommand?.Execute(null);
}
}
}
}
}
// If the new item that is appearing on the screen is the last one in the
// collection, we execute the LoadMoreCommand so our ViewModel knows we
// want to load more data for our user from the data service.
private void OnItemAppearing(object sender, ItemVisibilityEventArgs e)
{
ItemAppearingCommand?.Execute(e.Item);
//If its the last item execute command and load more data.
if (e.Item == ItemsSource.Cast <object>().Last())
{
LoadMoreCommand?.Execute(null);
}
}
private void OnItemAppearing(object sender, ItemVisibilityEventArgs e)
{
if (ItemAppearingCommand != null)
{
ItemAppearingCommand?.Execute(e.Item);
}
if (LoadMoreCommand != null)
{
if (e.Item == ItemsSource.Cast <object>().Last())
{
LoadMoreCommand?.Execute(null);
}
}
}
public override void SubscribeModel()
{
model.DayTableModels.ObserveAddChanged()
.Subscribe(x =>
{
MainGroupListViewModel sameTitleViewModel = DayTableViewModels.FirstOrDefault(y => y.Title == x.Station);
if (sameTitleViewModel != null)
{
sameTitleViewModel.Add(new DayTableViewModel(x));
}
else
{
DayTableViewModels.Add(new MainGroupListViewModel(x.Station)
{
new DayTableViewModel(x)
});
}
})
.AddTo(Disposables);
model.DayTableModels.ObserveResetChanged()
.Subscribe(x => DayTableViewModels.Clear())
.AddTo(Disposables);
model.ObserveProperty(x => x.IsLoading)
.Subscribe(x => isLoading.Value = x)
.AddTo(Disposables);
Observable.FromEventPattern <ErrorEventArgs>(h => model.ErrorOccurred += h, h => model.ErrorOccurred -= h)
.Select(x => x.EventArgs)
.Subscribe(x => ShowAlertCommand.Execute(x.Message))
.AddTo(Disposables);
LoadCommand.Subscribe(async _ => await model.LoadAsync())
.AddTo(Disposables);
LoadIfEmptyCommand.Subscribe(async _ => await model.LoadIfEmptyAsync())
.AddTo(Disposables);
ItemSelectedCommand.Subscribe(x => PushDayTableViewCommand.Execute(x.Clone()))
.AddTo(Disposables);
ItemAppearingCommand.Subscribe(x => x.SubscribeModel())
.AddTo(Disposables);
ItemDisappearingCommand.Subscribe(x => x.UnSubscribeModel())
.AddTo(Disposables);
}
