public ManageGroupsPage()
{
InitializeComponent();
UpdateItems(GroupsDataStore.GetSaved());
MessagingCenter.Subscribe <Application, List <SavedGroup> >(this, MessageTypes.SavedGroupsChanged, (sender, newSavedGroups) =>
{
UpdateItems(newSavedGroups);
});
}
private async Task UpdateGroups(bool fromCistOnly = false)
{
GroupsLayout.IsEnabled = false;
ProgressLayout.IsVisible = true;
await Task.Factory.StartNew(() =>
{
if (fromCistOnly)
{
allGroups = GroupsDataStore.GetAllFromCist();
}
else
{
allGroups = GroupsDataStore.GetAll();
}
if (allGroups == null)
{
Device.BeginInvokeOnMainThread(() =>
{
DisplayAlert("Загрузка списка групп", "Не удолось загрузить список групп. Пожалуйста, попробуйте позже.", "Ok");
});
return;
}
savedGroups = GroupsDataStore.GetSaved();
groups = new ObservableCollection <Group>(allGroups.OrderBy(g => g.Name));
Device.BeginInvokeOnMainThread(() =>
{
AllGroupsList.ItemsSource = groups;
Searchbar_TextChanged(new object(), new TextChangedEventArgs(null, null));
ProgressLayout.IsVisible = false;
GroupsLayout.IsEnabled = true;
});
});
}