}//constructor
/// <summary>
/// This method kicks off the train
/// </summary>
/// <param name="journey"></param>
/// <returns></returns>
public async Task <string> StartTrain(Journey journey)
{
TrainJourney = journey; //Set the journey passed in from the parameters
if (CurrStop == null) //If the current stop is empty
{
CurrStop = TrainJourney.FirstStop; //Set the current stop to the first
}
Task <string> getUpdate = Task.Run(() => MoveTrain()); //Setup task to simulate train
String update = await getUpdate; //Save result in string
return(update); //Return the result
}//StartTrain
} //testString
/// <summary>
/// This method is what does the processing for the journey and displaying the output
/// </summary>
/// <param name="train"></param>
/// <returns></returns>
private async Task <string> begin(Train train)
{
Journey journey = train.TrainJourney;
btnAddStop.Enabled = false; //Disable addstop for duration of journey
Stop Ttracker; //Tracks what stop the train is at
//Tests if the ID is valid
String res = ""; //String that holds the result of the update
if (journey != null && journey.FirstStop.NextStop != null) //Tests if the journey is not null or if the first stop has no other stops
{
Ttracker = journey.FirstStop; //Set temporary stop to the first stop in the journey
lblStops.Text = "Stops:"; //Set the text for the stops overview label
do
{
//The next stop is null
if (Ttracker.NextStop == null)
{
lblStops.Text += Ttracker.getLastStopDetails(); //Provide alternate details text for last stop
MessageBox.Show("Detected " + Ttracker.Name + " as last stop"); //Alert the user it detected the current stop as the last
}
else
{
lblStops.Text += Ttracker.getStopDetails(); //Else provide regular details text
}
Ttracker = Ttracker.NextStop; //Incremenet the stop to the next
} while (Ttracker != null); //Do while
Ttracker = journey.FirstStop; //Set the Tracker back to first stop
lblOutput.Text = "First Stop: " + journey.FirstStop.Name; //Change the output text to the first stop
do
{
Ttracker = Ttracker.NextStop; //Set the tracker to the next stop
res = await train.StartTrain(journey); //Start the journey to the next stop and await the response
lblOutput.Text += "\n" + res; //Return the result
} while (Ttracker.NextStop != null); //While the next stop is not null
}
else
{
MessageBox.Show("Journey is not Set!"); //if no journey is found - meaning no stops
return("");
}//if else
return("Journey complete");
}//begin
}//btnGo_Click
/// <summary>
/// This method handles adding a new stop into the journey
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAddStop_Click(object sender, EventArgs e)
{
if (detectCurrTrain() != null)
{
Journey journey = detectCurrTrain().TrainJourney;
Add_Stop newStop = new Add_Stop(journey); //Create temp new stop
newStop.ShowDialog();
//If the journey is null instantiate it, otherwise add node
if (journey == null)
{
detectCurrTrain().TrainJourney = new Journey(newStop.NewStop, newStop.Speed);
lblSpeed.Text += newStop.Speed;
}
else
{
journey.AddStop(newStop.NewStop);
}//else
displayJourney();
} //if
} //btnAddStop_Click
