/// <summary>
/// Create a new session
/// </summary>
public MeetingCentreService()
{
this.MeetingCentres = new ObservableCollection <MeetingCentre>();
this.MeetingCentres.CollectionChanged += CentresCollectionChanged;
this.ServiceChanged = false;
MeetingCentreService.Current = this;
this.LoadFromContext();
}
/// <summary>
/// Create a session from an imported MeetingCentre collection
/// </summary>
/// <param name="import"></param>
public MeetingCentreService(IList <MeetingCentre> import)
{
foreach (MeetingCentre centre in import)
{
centre.PropertyChanged += CentreChanged;
}
this.MeetingCentres = new ObservableCollection <MeetingCentre>(import);
this.MeetingCentres.CollectionChanged += CentresCollectionChanged;
this.CentresCollectionChanged(this, new System.Collections.Specialized.NotifyCollectionChangedEventArgs(System.Collections.Specialized.NotifyCollectionChangedAction.Add, this.MeetingCentres));
this.ServiceChanged = false;
MeetingCentreService.Current = this;
this.LoadFromContext();
}
private async Task _import(string fileName, Models.Data.DocumentFormat format)
{
Views.Popups.FileProcessingPopup popup = new Views.Popups.FileProcessingPopup(fileName);
popup.Show();
Models.Entities.MeetingCentreService service = await Models.Entities.MeetingCentreService.LoadServiceAsync(fileName, format);
popup.Close();
if (service != null)
{
ViewModels.CentresViewModel.Context.RefreshService();
ViewModels.MeetingsViewModel.Context.ResetService();
}
else
{
MessageBox.Show("The selected file doesn't exist anymore or is not in the correct format.", "Importing file", MessageBoxButton.OK);
}
}
/// <summary cref="MeetingCentreService">
/// Asynchronously loads a MeetingCentreService
/// </summary>
public static async Task <MeetingCentreService> LoadServiceAsync(string loadFrom, Data.DocumentFormat format)
{
MeetingCentreService service = null;
try
{
switch (format)
{
case Data.DocumentFormat.XML:
service = await Data.XmlIO.ParseXmlAsync(loadFrom);
service.FilePath = loadFrom;
break;
case Data.DocumentFormat.JSON:
service = await Data.JsonIO.ParseJsonAsync(loadFrom);
service.FilePath = loadFrom;
break;
case Data.DocumentFormat.CSVStyle:
service = new MeetingCentreService(await Data.CsvImporter.ReadFromFileAsync(loadFrom));
break;
default:
throw new InvalidEnumArgumentException();
}
}
catch (System.IO.IOException e)
{
MessageBox.Show(e.Message, "Failed opening file", MessageBoxButton.OK);
}
catch (JsonException e)
{
MessageBox.Show(e.Message, "Failed importing JSON file", MessageBoxButton.OK);
}
return(service);
}