public AddOrEditFillupEntry()
{
InitializeComponent();
_isNewInstance = true;
if (DesignerProperties.IsInDesignTool)
{
DataContext = new AddOrEditFillupEntryViewModel
{
FillupEntry =
new FillupEntry
{
EntryDate = DateTime.Now,
PumpUnit = UnitOfMeasure.DefaultVolumeUnit
}
};
}
}
protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (!_isNewInstance) return;
string mode;
string vehicleIdString;
NavigationContext.QueryString.TryGetValue("mode", out mode);
NavigationContext.QueryString.TryGetValue("vehicleId", out vehicleIdString);
int vehicleId = int.Parse(vehicleIdString);
var entryMode = (Mode) (Enum.Parse(typeof (Mode), mode, true));
var viewModel = new AddOrEditFillupEntryViewModel {Vehicle = App.VehicleStore[vehicleId], Mode = entryMode};
switch (entryMode)
{
case Mode.New:
viewModel.FillupEntry = new FillupEntry
{
EntryDate = DateTime.Now,
PumpUnit = UnitOfMeasure.DefaultVolumeUnit,
OdometerUnit = viewModel.Vehicle.OdometerUnit,
};
break;
case Mode.Edit:
string entryTicksString;
NavigationContext.QueryString.TryGetValue("entryTicks", out entryTicksString);
long entryTicks = long.Parse(entryTicksString);
viewModel.OriginalEntryTicks = entryTicks;
_originalEntry = viewModel.Vehicle.Entries
.Where(entry => entry.EntryDate.Ticks == entryTicks)
.Single();
viewModel.FillupEntry = FillupEntry.Clone(_originalEntry);
break;
case Mode.Insert:
string fromDateString;
string toDateString;
NavigationContext.QueryString.TryGetValue("fromDate", out fromDateString);
NavigationContext.QueryString.TryGetValue("toDate", out toDateString);
var fromDate = new DateTime(long.Parse(fromDateString));
var toDate = new DateTime(long.Parse(toDateString));
viewModel.InsertDateFrom = fromDate;
viewModel.InsertDateTo = toDate;
viewModel.FillupEntry = new FillupEntry
{
PumpUnit = UnitOfMeasure.DefaultVolumeUnit,
OdometerUnit = viewModel.Vehicle.OdometerUnit,
EntryDate = DateTime.Today
};
break;
default:
throw new Exception("We should never get here.");
}
DataContext = viewModel;
//restore previous state
if (!State.ContainsKey("StatePreserved")) return;
StateUtils.RestoreState(State, TxtFillAmount, String.Empty);
StateUtils.RestoreState(State, TxtOdometerReading, String.Empty);
StateUtils.RestoreState(State, TxtPricePerUnit, String.Empty);
StateUtils.RestoreState(State, EntryDatePicker, DateTime.Now);
StateUtils.RestoreState(State, chkNotToppedOff, false);
StateUtils.RestoreState(State, chkMissedPreviousEntry, false);
}