private async void EditSelectedItem()
{
if (_selectedItem != null)
{
DependencyService.Get <IMetricsManagerService>().TrackEvent("MySurveysLoadOnlyEdit");
await _selectedItem.EditAsync();
SelectedItem = null;
}
}
private void ResponseDeleted(object sender, EventArgs args)
{
var item = (MySurveysItemViewModel)sender;
if (item == SelectedItem)
{
SelectedItem = null;
}
Surveys.Remove(item);
}
public async Task RefreshAsync()
{
Surveys?.Clear();
try
{
// Get all the files that match *.survey.json
var fileHelper = new FileHelper();
var files = await fileHelper.GetFilesAsync();
var surveyFiles = files.Where(f => f.EndsWith(".survey.json"));
var managers = new List <MySurveysItemViewModel>();
foreach (var surveyFile in surveyFiles)
{
// Clean up surveys older than maximum age.
var lastModified = await fileHelper.LastModifiedAsync(surveyFile);
if (DateTime.Now - lastModified > s_maxAge)
{
await fileHelper.DeleteAsync(surveyFile);
}
else
{
var manager = new MySurveysItemViewModel(surveyFile);
manager.Deleted += ResponseDeleted;
await manager.LoadAsync();
managers.Add(manager);
}
}
// Sort the surveys from most recently saved to least recently saved
managers.Sort((x, y) => - CompareDateTime(x.LastModified, y.LastModified));
Surveys = new ObservableCollection <MySurveysItemViewModel>(managers);
}
catch (Exception ex)
{
DependencyService.Get <IMetricsManagerService>().TrackException("MySurveysRefreshAsyncFailed", ex);
await App.DisplayAlertAsync(
"My Surveys Refresh Failed",
"Failed to refresh stored surveys, please try again.",
"OK");
}
}
