//Constructor，Constructor Injection is used to decouple ViewModel and Model.
public MainWindowViewModel(SignalBase inputSignal)
{
//Initialize Property
signalSimplingPoint = new SimplingPoint(DateTime.Now, 0.0, 0.0, 0.0);
Signal_Y1_Input = true;
Signal_Y2_Input = true;
Signal_Y3_Input = true;
samplingPeriodItem = new ObservableCollection <string>()
{
"1s", "800ms", "600ms", "400ms", "200ms"
};
samplingPeriodArray = new double[] { 1.0, 0.8, 0.6, 0.4, 0.2 };
samplingPeriodIndex = 3;
statusTip = "Ready";
saveEnabled = false;
historyData = new List <SimplingPoint>();
isStarted = false;
Start_StopCommand = new RelayCommand(Start_Stop);
SaveCommand = new RelayCommand(SaveHistoryData);
//Update View based on the signal
signal = inputSignal;
signal.TiggerTimer.Interval = TimeSpan.FromSeconds(0.5);
signal.Changed += UpdateData;
}
public SignalEventArgs(SimplingPoint simplingArgs)
{
SimplingArgs = simplingArgs;
}