public PurchaseContext(string currentState)
{
PurchaseStates purchaseStates = (PurchaseStates)Enum.Parse(typeof(PurchaseStates), currentState);
switch (purchaseStates)
{
case PurchaseStates.Created:
State = new Requested(purchaseStates);
break;
case PurchaseStates.Accepted:
State = new Accepted(purchaseStates);
break;
case PurchaseStates.ReadyToShip:
State = new ReadyToDepart(purchaseStates);
break;
case PurchaseStates.ConfirmShip:
State = new ConfirmDepart(purchaseStates);
break;
case PurchaseStates.Shipped:
State = new Shipped(purchaseStates);
break;
case PurchaseStates.Received:
State = new Received(purchaseStates);
break;
default:
throw new ArgumentOutOfRangeException(nameof(purchaseStates), purchaseStates, null);
}
}
public Received(PurchaseStates state) : base(state)
{
DisplayText = "Received";
CommandText = "Receive products";
NextState = null;
}
public Shipped(PurchaseStates state) : base(state)
{
DisplayText = "Shipped";
CommandText = "Ship";
NextState = new Received(PurchaseStates.Received);
}
public ConfirmDepart(PurchaseStates state) : base(state)
{
DisplayText = "Shipment confirmed";
CommandText = "Confirm Shipment";
NextState = new Shipped(PurchaseStates.Shipped);
}
public ReadyToDepart(PurchaseStates state) : base(state)
{
DisplayText = "Ready to ship";
CommandText = "Ready to ship";
NextState = new ConfirmDepart(PurchaseStates.ConfirmShip);
}
public Accepted(PurchaseStates state) : base(state)
{
NextState = new ReadyToDepart(PurchaseStates.ReadyToShip);
DisplayText = "Accepted";
CommandText = "Accept Request";
}
public Requested(PurchaseStates state) : base(state)
{
NextState = new Accepted(PurchaseStates.Accepted);
DisplayText = "Created";
CommandText = "Create";
}
protected PurchaseState(PurchaseStates state)
{
CurrentState = state;
}
public Canceled(PurchaseStates state) : base(state)
{
DisplayText = "Canceled";
CommandText = "Cancel request";
NextState = null;
}
