public void OnNextClicked(object sender, EventArgs args)
{
QuestionView v = vg.NextQuestion();
if (v == null)
{
DisplayAlert("Done!", "Thank you for filling the survey", "Submit", "Change").ContinueWith(t =>
{
if (t.Result == true)
{
IOController.WriteSurveyResult(vg.SurveyScheme, vg.CurrentViews);
_tflp.Reschedule();
this.navigationContent.Navigation.PopAsync();
this.navigationContent.Navigation.PopAsync();
}
}, TaskScheduler.FromCurrentSynchronizationContext());
}
else
{
InitializePropertyCallback(v);
surveyContent.Children.RemoveAt(0);
surveyContent.Children.Insert(0, v);
this.goToNextButton.IsEnabled = v.IsAnswered;
this.goToPreviousButton.IsEnabled = true;
}
}
/// <summary>
/// Reschedule the instance of the chosen SurveyAnswer.
/// </summary>
public void Reschedule()
{
ScheduleController.reschedule(chosenSurvey);
string rescheduled = JSonTranslator.Serialize(chosenSurvey);
IOController.SaveFile(rescheduled, chosenSurvey.Survey.SurveyName + "_" + chosenSurvey.Survey.SurveyId.ToString().Substring(0, 4), Constants.toFillFolder);
}
/// <summary>
/// Mockup class simulating actual connection for the new surveys.
/// </summary>
public void DownloadNewSurveys()
{
// this part is actually faking the connection to the Internet
Assembly assembly = GetType().GetTypeInfo().Assembly;
string resource = "Surveys.SerializedSurveys.MedicalSurvey.json";
string ss;
using (Stream stream = assembly.GetManifestResourceStream(resource))
{
using (StreamReader reader = new StreamReader(stream))
{
var stringTask = reader.ReadToEndAsync();
ss = stringTask.Result;
}
}
// process and save in the desired directory
Survey s = JSonTranslator.Deserialize <Survey> (ss);
IOController.SaveFile(ss, s.SurveyName, Constants.schemasFolder);
}
/// <summary>
/// Initializes a new instance of the <see cref="Surveys.SavedListPage"/> class.
/// </summary>
public SavedListPage()
{
this.Title = "List of saved survey results";
// Create and initialize ListView.
ListView listView = new ListView();
this.FilledSurveys = IOController.ReadFileNames(Constants.filledFolder);
listView.ItemsSource = FilledSurveys;
listView.ItemSelected += (sender, args) => {
if (args.SelectedItem != null)
{
// Deselect the item.
listView.SelectedItem = null;
string selectedFileName = (string)args.SelectedItem;
string selectedFileContent = IOController.ReadFile(selectedFileName, Constants.filledFolder);
this.Navigation.PushAsync(new SavedInstancePage(selectedFileContent, selectedFileName));
}
};
this.Content = new ScrollView {
Content = listView
};
}
/// <summary>
/// Initializes a new instance of the <see cref="Surveys.ToFillListPage"/> class.
/// </summary>
public ToFillListPage()
{
this.Title = "To be answered";
// Read schemas, instances and check for new
List <Survey> allSchemas = IOController.ReadAllSchemas();
List <SurveyAnswer> filledAnswers = new List <SurveyAnswer> ();
List <string> filledAnswersSerialized = IOController.ReadFiles(Constants.filledFolder);
foreach (string s in filledAnswersSerialized)
{
filledAnswers.Add(JSonTranslator.Deserialize <SurveyAnswer> (s));
}
List <Survey> newSchemas = StartupController.checkForNewSchemas(allSchemas, filledAnswers);
// If new, generate unfilled instances
List <SurveyAnswer> surveyUnfilledInstances = new List <SurveyAnswer> ();
if (newSchemas.Count != 0)
{
UserData user = new UserData();
user.Username = "******";
user.ID = "test_ID";
surveyUnfilledInstances = StartupController.generateInstances(newSchemas, user);
}
// Read previously stored unfilled instances
List <string> previouslyUnfilledSerialized = IOController.ReadFiles(Constants.toFillFolder);
foreach (string s in previouslyUnfilledSerialized)
{
SurveyAnswer sa = JSonTranslator.Deserialize <SurveyAnswer> (s);
surveyUnfilledInstances.Add(sa);
}
// set active parts and preapre a display dictionary
Dictionary <string, SurveyAnswer> toAnswerNamed = new Dictionary <string, SurveyAnswer> ();
foreach (SurveyAnswer sa in surveyUnfilledInstances)
{
if (ScheduleController.setActive(sa))
{
toAnswerNamed.Add(sa.Survey.SurveyName + "_" + sa.SurveyId.ToString().Substring(0, 4) + "_" + DateTime.Now.DayOfYear,
sa);
}
}
// Create and initialize ListView.
ListView listView = new ListView();
listView.ItemsSource = toAnswerNamed.Keys;
listView.ItemSelected += (object sender, SelectedItemChangedEventArgs e) => {
if (e.SelectedItem != null)
{
listView.SelectedItem = null;
chosenSurvey = toAnswerNamed [(string)e.SelectedItem];
ViewGenerator vg = new ViewGenerator(chosenSurvey.Survey);
ContentPage surveyPage = new SurveyViewPage(vg, this);
this.Navigation.PushAsync(surveyPage);
}
};
this.Content = new ScrollView {
Content = listView
};
}