public override Android.Views.View GetView(int position, Android.Views.View convertView, ViewGroup parent)
{
if (App.Locator.ModeZone.InvalidViews)
{
InvalidateAllViews();
}
// on récupère l'alerte en question
var item = this[position];
// on essaie de récupérer la vue potentiellement déjà créé
ListAlertModeZoneViewHolder holder = null;
if (!_alreadyCreatedViews.ContainsKey(position))
{
_alreadyCreatedViews.Add(position, null);
}
Android.Views.View view = _alreadyCreatedViews[position];
// si on a récupéré la vue on récupère le holder dans son tag
if (view != null)
{
holder = view.Tag as ListAlertModeZoneViewHolder;
}
// si le holder n'est pas défini, on le fait et on crée la vue
if (holder == null)
{
holder = new ListAlertModeZoneViewHolder();
view = _context.LayoutInflater.Inflate(Resource.Layout.ListAlertModeZoneRow, null);//pour une ligne ?
view.Tag = holder;
holder.titre = view.FindViewById <TextView>(Resource.Id.listAlertsModeZoneRow_titre);
holder.description = view.FindViewById <TextView>(Resource.Id.listAlertsModeZoneRow_contenu);
holder.nbrRecipients = view.FindViewById <TextView>(Resource.Id.listAlertsModeZoneRow_nbrRecipients);
{
var alertWithRecipient = ((AlertWithRecipientDTO)item);
// updates the contents of the holder
UpdateHolderContents(holder, alertWithRecipient);
// attaches the click event (edit alert) on the view
view.Click += ((object o, EventArgs e) =>
{
App.Locator.ModeZone.GoToAlertDetail(alertWithRecipient, position);
});
}
_alreadyCreatedViews[position] = view;
}
// if the holder exists, we may need to update its properties
else
{
UpdateHolderContents(holder, (AlertWithRecipientDTO)item);
}
return(view);
}
/// <summary>
/// Updates the content of one holder
/// </summary>
private void UpdateHolderContents(ListAlertModeZoneViewHolder holder, AlertWithRecipientDTO contents)
{
holder.titre.Text = contents.Title;
holder.description.Text = contents.Content;
holder.nbrRecipients.Text = contents.LsRecipients != null?contents.LsRecipients.Count.ToString() : "0";
}
