async void onAddBtnClicked(object sender, EventArgs e)
{
Asignatura newAsignatura = new Asignatura();
var nextPage = new AsignaturasCreateUpdatePage(true);
nextPage.BindingContext = newAsignatura;
await Navigation.PushAsync(nextPage);
}
async public void OnEdit(object sender, EventArgs e)
{
var menuItem = ((MenuItem)sender);
Asignatura asignatura = menuItem.CommandParameter as Asignatura;
var nextPage = new AsignaturasCreateUpdatePage(false);
nextPage.BindingContext = asignatura;
await Navigation.PushAsync(nextPage);
}
async public void OnDelete(object sender, EventArgs e)
{
var menuItem = ((MenuItem)sender);
Asignatura asignatura = menuItem.CommandParameter as Asignatura;
await firebase
.Child(Utils.FireBase_Entity.ASIGNATURAS)
.Child(asignatura.Uid)
.DeleteAsync();
await getFireAsignaturas();
}
async void onSelection(object sender, SelectedItemChangedEventArgs e)
{
if (e.SelectedItem == null)
{
return; //ItemSelected is called on deselection, which results in SelectedItem being set to null
}
Asignatura asignatura = e.SelectedItem as Asignatura;
await Navigation.PushAsync(new AsignaturasTabPage(asignatura));
((ListView)sender).SelectedItem = null; // unselect item
}
public async Task <int> getFireAsignaturas()
{
var list = (await firebase
.Child(Utils.FireBase_Entity.ASIGNATURAS)
.OnceAsync <Asignatura>());
asignaturasCollection.Clear();
foreach (var item in list)
{
Asignatura asignatura = item.Object as Asignatura;
asignatura.Uid = item.Key;
asignaturasCollection.Add(asignatura);
}
return(0);
}
public AsignaturasTabPage(Asignatura asignatura)
{
Children.Add(new EstudiantesDentroAsignaturasPage(asignatura.Uid));
Children.Add(new EvaluacionesDentroAsignaturasPage(asignatura.Uid));
}
