private void NextState(TransitionEventArgs eventArgs)
{
lock (this.sync)
{
if (this.CheckIsRunning())
{
this.SetNextState(eventArgs);
}
}
}
protected virtual void RaiseStateFinished(TransitionEventArgs eventArgs)
{
EventHandler <TransitionEventArgs> finished = this.Finished;
if (finished != null)
{
finished(this, eventArgs);
return;
}
Tracer <BaseState> .WriteWarning("Finishing state without handler {0} ({1}), status: {2}", new object[]
{
this.ToString(),
this.MachineName,
(eventArgs == null || string.IsNullOrEmpty(eventArgs.Status)) ? "empty" : eventArgs.Status
});
}
public virtual BaseState NextState(TransitionEventArgs eventArgs)
{
BaseState baseState = this;
BaseTransition baseTransition = this.DefaultTransition;
Tracer <BaseState> .WriteInformation(string.Format("Getting Next state of {0} ({1})", this.ToString(), this.MachineName), new object[0]);
try
{
foreach (BaseTransition current in this.ConditionalTransitions)
{
if (current.ConditionsAreMet(this, eventArgs))
{
baseTransition = current;
Tracer <BaseState> .WriteInformation("Conditions are met for {0}", new object[]
{
current.ToString()
});
break;
}
}
}
catch (Exception ex)
{
Tracer <BaseState> .WriteError(ex, "Checking transitions is failed: unexpected error", new object[0]);
return(this.HandleTransitionException(baseState, ex));
}
if (baseTransition != null)
{
if (baseTransition == this.DefaultTransition)
{
Tracer <BaseState> .WriteInformation("Selecting Default transition {0}", new object[]
{
baseTransition.Next.ToString()
});
}
Tracer <BaseState> .WriteInformation(string.Format("Next state of {0} is {1}", this.ToString(), baseTransition.Next), new object[0]);
baseState = baseTransition.Next;
}
return(baseState);
}
private void SetNextState(TransitionEventArgs eventArgs)
{
if (!this.CheckIsRunning())
{
return;
}
BaseState baseState = this.CurrentState.NextState(eventArgs);
this.CurrentState.Stop();
this.CurrentState.Finished -= new EventHandler <TransitionEventArgs>(this.CurrentStateFinished);
this.CurrentState.Errored -= new EventHandler <Error>(this.CurrentStateErrored);
this.CurrentState = baseState;
this.CurrentState.Finished += new EventHandler <TransitionEventArgs>(this.CurrentStateFinished);
this.CurrentState.Errored += new EventHandler <Error>(this.CurrentStateErrored);
try
{
this.CurrentState.Start();
}
catch (OutOfMemoryException ex)
{
Tracer <BaseStateMachine> .WriteError(ex, "Cannot start a state", new object[0]);
this.CurrentStateErrored(this.CurrentState, new Error(ex));
}
catch (Exception ex2)
{
Tracer <BaseStateMachine> .WriteError(ex2, "Cannot start a state", new object[0]);
this.CurrentStateErrored(this.CurrentState, new Error(new InternalException(string.Empty, ex2)));
}
if (this.IsCurrentStateEndState())
{
string status = this.StopStateMachine();
EventHandler <TransitionEventArgs> machineEnded = this.MachineEnded;
if (machineEnded != null)
{
machineEnded(this, new TransitionEventArgs(status));
}
}
}
private void CurrentStateFinished(object sender, TransitionEventArgs eventArgs)
{
BaseState baseState = sender as BaseState;
lock (this.sync)
{
if (this.CurrentState == baseState)
{
this.NextState(eventArgs);
}
else
{
Tracer <BaseStateMachine> .WriteWarning(string.Concat(new object[]
{
"Blocked state change attempt from:",
this.CurrentState,
" to:",
baseState
}), new object[0]);
}
}
}
public override bool ConditionsAreMet(object sender, TransitionEventArgs eventArgs)
{
return eventArgs.Status == this.statusKey;
}
public override bool ConditionsAreMet(object sender, TransitionEventArgs eventArgs)
{
return this.predicate();
}
public abstract bool ConditionsAreMet(object sender, TransitionEventArgs eventArgs);
public virtual BaseState NextState(TransitionEventArgs eventArgs)
{
BaseState baseState = this;
BaseTransition baseTransition = this.DefaultTransition;
Tracer<BaseState>.WriteInformation(string.Format("Getting Next state of {0} ({1})", this.ToString(), this.MachineName), new object[0]);
try
{
foreach (BaseTransition current in this.ConditionalTransitions)
{
if (current.ConditionsAreMet(this, eventArgs))
{
baseTransition = current;
Tracer<BaseState>.WriteInformation("Conditions are met for {0}", new object[]
{
current.ToString()
});
break;
}
}
}
catch (Exception ex)
{
Tracer<BaseState>.WriteError(ex, "Checking transitions is failed: unexpected error", new object[0]);
return this.HandleTransitionException(baseState, ex);
}
if (baseTransition != null)
{
if (baseTransition == this.DefaultTransition)
{
Tracer<BaseState>.WriteInformation("Selecting Default transition {0}", new object[]
{
baseTransition.Next.ToString()
});
}
Tracer<BaseState>.WriteInformation(string.Format("Next state of {0} is {1}", this.ToString(), baseTransition.Next), new object[0]);
baseState = baseTransition.Next;
}
return baseState;
}
protected virtual void MachineEnded(object sender, TransitionEventArgs args)
{
Tracer<StateMachineState>.WriteInformation("Machine Ended {0} ({1})", new object[]
{
this.ToString(),
base.MachineName
});
this.RaiseStateFinished(args);
}
protected virtual void RaiseStateFinished(TransitionEventArgs eventArgs)
{
EventHandler<TransitionEventArgs> finished = this.Finished;
if (finished != null)
{
finished(this, eventArgs);
return;
}
Tracer<BaseState>.WriteWarning("Finishing state without handler {0} ({1}), status: {2}", new object[]
{
this.ToString(),
this.MachineName,
(eventArgs == null || string.IsNullOrEmpty(eventArgs.Status)) ? "empty" : eventArgs.Status
});
}
public abstract bool ConditionsAreMet(object sender, TransitionEventArgs eventArgs);
private void CurrentStateFinished(object sender, TransitionEventArgs eventArgs)
{
BaseState baseState = sender as BaseState;
lock (this.sync)
{
if (this.CurrentState == baseState)
{
this.NextState(eventArgs);
}
else
{
Tracer<BaseStateMachine>.WriteWarning(string.Concat(new object[]
{
"Blocked state change attempt from:",
this.CurrentState,
" to:",
baseState
}), new object[0]);
}
}
}
private void SetNextState(TransitionEventArgs eventArgs)
{
if (!this.CheckIsRunning())
{
return;
}
BaseState baseState = this.CurrentState.NextState(eventArgs);
this.CurrentState.Stop();
this.CurrentState.Finished -= new EventHandler<TransitionEventArgs>(this.CurrentStateFinished);
this.CurrentState.Errored -= new EventHandler<Error>(this.CurrentStateErrored);
this.CurrentState = baseState;
this.CurrentState.Finished += new EventHandler<TransitionEventArgs>(this.CurrentStateFinished);
this.CurrentState.Errored += new EventHandler<Error>(this.CurrentStateErrored);
try
{
this.CurrentState.Start();
}
catch (OutOfMemoryException ex)
{
Tracer<BaseStateMachine>.WriteError(ex, "Cannot start a state", new object[0]);
this.CurrentStateErrored(this.CurrentState, new Error(ex));
}
catch (Exception ex2)
{
Tracer<BaseStateMachine>.WriteError(ex2, "Cannot start a state", new object[0]);
this.CurrentStateErrored(this.CurrentState, new Error(new InternalException(string.Empty, ex2)));
}
if (this.IsCurrentStateEndState())
{
string status = this.StopStateMachine();
EventHandler<TransitionEventArgs> machineEnded = this.MachineEnded;
if (machineEnded != null)
{
machineEnded(this, new TransitionEventArgs(status));
}
}
}
private void NextState(TransitionEventArgs eventArgs)
{
lock (this.sync)
{
if (this.CheckIsRunning())
{
this.SetNextState(eventArgs);
}
}
}
public override bool ConditionsAreMet(object sender, TransitionEventArgs eventArgs)
{
return true;
}