public bool TryLoadAppContext(out AppContext appContext)
{
if (!File.Exists(_path))
{
appContext = null;
return(false);
}
FileStream stream = null;
try
{
stream = File.Open(_path, FileMode.OpenOrCreate, FileAccess.Read);
DataContractJsonSerializer jsonSerializer =
new DataContractJsonSerializer(typeof(SerializableAppContext));
SerializableAppContext loadedValue = (SerializableAppContext)jsonSerializer.ReadObject(stream);
var context = new AppContext
{
vehiclePlatesMap = new Dictionary <int, AvaloniaList <ITelemetryPlate> >()
};
if (loadedValue.PlateData != null)
{
foreach (var kvp in loadedValue.PlateData)
{
AvaloniaList <ITelemetryPlate> list = new AvaloniaList <ITelemetryPlate>();
foreach (var plateData in kvp.Value)
{
ITelemetryPlate plate = _telemetryPlateFactory.Create(
plateData.PlateName,
plateData.TelemetryCodeKey,
plateData.Units,
plateData.MinThreshold,
plateData.MaxThreshold,
plateData.DecimalPlaces);
list.Add(plate);
}
context.vehiclePlatesMap.Add(kvp.Key, list);
}
}
context.mainWindowWidth = loadedValue.MainWindowWidth;
context.mainWindowHeight = loadedValue.MainWindowHeight;
context.mainWindowPosition = new Avalonia.PixelPoint(loadedValue.MainWindowPosX, loadedValue.MainWindowPosY);
appContext = context;
}
catch (Exception err)
{
_log.Error("Error occured during loading the app context.", err);
appContext = null;
return(false);
}
finally
{
stream.Dispose();
}
return(true);
}
private AppContext initDefaultContext()
{
AppContext context = new AppContext()
{
mainWindowWidth = _defaultWidth,
mainWindowHeight = _defaultHeight,
mainWindowPosition = new Avalonia.PixelPoint(0, 0),
vehiclePlatesMap = new Dictionary <int, AvaloniaList <ITelemetryPlate> >()
};
return(context);
}
public void StoreAppContext(AppContext appContext)
{
if (appContext == null)
{
throw new ArgumentNullException(nameof(appContext));
}
if (appContext.vehiclePlatesMap == null)
{
throw new ArgumentException("Data about plates can not be null");
}
Dictionary <int, List <TelemetryPlateData> > serializableDict = new Dictionary <int, List <TelemetryPlateData> >();
foreach (var kvp in appContext.vehiclePlatesMap)
{
List <TelemetryPlateData> serializableList = new List <TelemetryPlateData>();
foreach (var plate in kvp.Value)
{
TelemetryPlateData data = new TelemetryPlateData()
{
MaxThreshold = plate.MaxThreshold,
MinThreshold = plate.MinThreshold,
PlateName = plate.PlateName,
Units = plate.Units,
TelemetryCodeKey = plate.TelemetryKeyCode,
DecimalPlaces = plate.DecimalPlaces,
};
serializableList.Add(data);
}
serializableDict.Add(kvp.Key, serializableList);
}
SerializableAppContext serializableContext = new SerializableAppContext
{
PlateData = serializableDict,
MainWindowHeight = appContext.mainWindowHeight,
MainWindowWidth = appContext.mainWindowWidth,
MainWindowPosX = appContext.mainWindowPosition.X,
MainWindowPosY = appContext.mainWindowPosition.Y
};
using FileStream stream = File.Create(_path);
DataContractJsonSerializer jsonSerializer =
new DataContractJsonSerializer(typeof(SerializableAppContext));
jsonSerializer.WriteObject(stream, serializableContext);
}