/**
  *  =========================================================
  *  MetroStation.java: Create metro station object.
  *                     The class node extends class node...
  * 
  *  Written by: Mark Austin                          May 2006 
  *  =========================================================
  */

import java.lang.Math;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

public class MetroStation extends Node {
   protected String    sName;
   protected List    onTrack;
   protected boolean parking;

   // Constructor methods ....

   public MetroStation( String sName, double dX, double dY ) {

      super( dX, dY );               // Create an object of type Node
      this.sName = sName;            // Initialize metro station name..
      onTrack    = new ArrayList();  // Initialize array list of line colors 
      parking    = false;            // Default parking is false ....

   }

   // Get X and Y coordinates of metro station

   public double getX() { return dX; }
   public double getY() { return dY; }

   // Set parking node ...

   public void setParking( boolean parking ) {
      this.parking = parking;
   }

   // Assign metro station to a track ....

   public void add( String track ) {
      onTrack.add ( track );
   }

   // Convert description of metro station to a string ...

   public String toString() {
      String s = "MetroStation(\"" + sName + "\")\n" +
                 "   Coordinates = (" + dX + "," + dY + ")\n" +
                 "   Parking = " + parking + "\n";

      // Walk along array list and add line names to string "s" ....

      if ( onTrack.size() > 0 ) {
         s = s.concat( "   Track   = { " );
         for (int i = 0; i < onTrack.size(); i = i + 1)
             s = s.concat( onTrack.get(i) + " ");
         s = s.concat("}\n");
      }

      return s;
   }

   // Exercise methods in the metro station class .....

   public static void main( String args[] ) {

      // Create "College Park" station at coordinate (80,80)...

      MetroStation sA = new MetroStation("College Park",  3.5,  8.0 );
      sA.setParking( true );
      sA.add ( "Green" );
      System.out.println( sA.toString() );

      // Create "Fort Totten" station at coordinate (70,70)...

      MetroStation sB = new MetroStation("Fort Totten",   0.0,  2.0 );
      sB.setParking( true );
      sB.add ( "Green" );
      sB.add ( "Red" );
      sB.add ( "Purple" );
      sB.add ( "Violet" );
      System.out.println( sB.toString() );
   }
}