/// <summary>
/// Deletes single survey from IsolatedStorage.
/// </summary>
/// <param name="surveyId">Id of survey you want to delete.</param>
public void Delete(string surveyId)
{
Read();
IEnumerable <SurveyBasicInfo> surveys;
surveys = from SurveyBasicInfo in _list where SurveyBasicInfo.SurveyId == surveyId select SurveyBasicInfo;
try
{
OperationsOnListOfResults resultsOperations = new OperationsOnListOfResults(surveyId);
resultsOperations.DeleteAllResults();
SurveyBasicInfo survey = surveys.First <SurveyBasicInfo>();
using (IsolatedStorageFile isoStore = IsolatedStorageFile.GetUserStoreForApplication())
{
string filePath = System.IO.Path.Combine("surveys", string.Format("{0}.xml", survey.SurveyId));
string directoryPath = System.IO.Path.Combine("surveys", survey.SurveyId);
string listOfResultPath = System.IO.Path.Combine(directoryPath, "listOfResults.xml");
try
{
isoStore.DeleteFile(filePath);
isoStore.DeleteFile(listOfResultPath);
isoStore.DeleteDirectory(directoryPath);
}
catch (IsolatedStorageException) { /*that means that this files doesn't exists*/ }
}
_list.Remove(survey);
Write();
}
catch (InvalidOperationException) { }
}
/// <summary>
/// Initializes all necessary data objects.
/// </summary>
public SurveyFilter()
{
AllSurveysItem = new SurveyBasicInfo()
{
Name = Languages.AppResources.resultsFilter_AllSurveys, SurveyId = "0"
};
ListPickerSurveys = new ObservableCollection <string>();
SelectedSurveys = new ObservableCollection <SurveyBasicInfo>();
SelectedSurveys.Add(AllSurveysItem);
}
/// <summary>
/// Removes marked survey from list you want to search by.
/// </summary>
/// <param name="item"></param>
public void RemoveSelectedSurvey(SurveyBasicInfo item)
{
if (item.SurveyId != "0")
{
SelectedSurveys.Remove(item);
}
if (SelectedSurveys.Count == 0)
{
SelectedSurveys.Add(AllSurveysItem);
}
}
private void ChangeFavorite(string surveyId, bool addSurvey)
{
Read();
IEnumerable <SurveyBasicInfo> surveys;
surveys = from SurveyBasicInfo in _list where SurveyBasicInfo.SurveyId == surveyId select SurveyBasicInfo;
try
{
SurveyBasicInfo survey = surveys.First <SurveyBasicInfo>();
int index = _list.IndexOf(survey);
_list.Remove(survey);
survey.IsFavorite = addSurvey;
_list.Insert(index, survey);
Write();
}
catch (InvalidOperationException)
{
}
}
/// <summary>
/// Adds selected survey to list you want to search by.
/// </summary>
/// <param name="avaiableSurveys">List of surveys currently saved in IsolatedStorage.</param>
public void AddChosenSurvey(ObservableCollection <SurveyBasicInfo> avaiableSurveys)
{
int selectedIndex = Convert.ToInt32(ChosenSurvey);
if (selectedIndex != avaiableSurveys.Count)
{
SurveyBasicInfo selectedItem = avaiableSurveys[selectedIndex];
if (!SelectedSurveys.Contains(selectedItem))
{
SelectedSurveys.Add(selectedItem);
}
if (SelectedSurveys.Count > 1)
{
SelectedSurveys.Remove(AllSurveysItem);
}
}
else
{
SelectedSurveys.Clear();
SelectedSurveys.Add(AllSurveysItem);
}
}