public virtual Task BackAsync()
{
if (isNavigating)
{
return(Task.CompletedTask);
}
isNavigating = true;
return(NavigationHelper.BackAsync().ContinueWith((x) => isNavigating = false));
}
async Task DeleteContribution()
{
try
{
// Shouldn't be getting here anyway, so no need for a message.
if (!Contribution.StartDate.IsWithinCurrentAwardPeriod())
{
return;
}
// Ask for confirmation before deletion.
var confirm = await DialogService.ConfirmAsync("Are you sure you want to delete this contribution? You cannot undo this.", Alerts.HoldOn, Alerts.OK, Alerts.Cancel);
if (!confirm)
{
return;
}
var isDeleted = await MvpApiService.DeleteContributionAsync(Contribution);
if (isDeleted)
{
// TODO: Pass back true to indicate it needs to refresh.
await NavigationHelper.BackAsync().ConfigureAwait(false);
}
else
{
await DialogService.AlertAsync("Your contribution could not be deleted. Perhaps it was already deleted, or it took place in the previous award period?", Alerts.Error, Alerts.OK);
}
}
catch (Exception ex)
{
AnalyticsService.Report(ex);
await DialogService.AlertAsync(Alerts.UnexpectedError, Alerts.Error, Alerts.OK).ConfigureAwait(false);
}
}
async Task Back()
{
await NavigationHelper.BackAsync().ConfigureAwait(false);
}
public async virtual Task Back()
{
await NavigationHelper.BackAsync().ConfigureAwait(false);
}