elevatorcontroller.java

用java模拟的电梯程序,可以选择有几层楼,一共有几个人在哪几层等电梯,可以不断的增加等电梯的人数,并看电梯如何以设定的方式运行.

// ElevatorController.java
// Controller for Elevator Simulation
package com.Anance.elevator.controller;

// Java core packages
import java.awt.*;
import java.awt.event.*;

// Java extension packages
import javax.swing.*;

// Deitel packages
import com.Anance.elevator.model.*;
import com.Anance.elevator.event.*;
import com.Anance.elevator.ElevatorConstants;

public class ElevatorController extends JPanel
   implements ElevatorConstants {

   // controller contains two JButtons
   private JButton firstControllerButton;
   private JButton secondControllerButton;

   // reference to model
   private ElevatorModel elevatorModel;

   public ElevatorController( ElevatorModel model )
   {
      elevatorModel = model;
      setBackground( Color.white );

      // add first button to controller
      firstControllerButton = new JButton( "First Floor" );
      add( firstControllerButton );

      // add second button to controller
      secondControllerButton = new JButton( "Second Floor" );
      add( secondControllerButton );

      // anonymous inner class registers for ActionEvents from
      // first Controller JButton
      firstControllerButton.addActionListener( 
         new ActionListener() {

            // invoked when a JButton has been pressed
            public void actionPerformed( ActionEvent event )
            {
               // add Person to first Floor
               elevatorModel.addPerson( 
                  FIRST_FLOOR_NAME );

               // disable user input
               firstControllerButton.setEnabled( false );
            }
         } // end anonymous inner class
      );

      // anonymous inner class registers for ActionEvents from
      // second Controller JButton
      secondControllerButton.addActionListener( 
         new ActionListener() {

            // invoked when a JButton has been pressed
            public void actionPerformed( ActionEvent event )
            {
               // add Person to second Floor
               elevatorModel.addPerson( 
                  SECOND_FLOOR_NAME );

               // disable user input
               secondControllerButton.setEnabled( false );
            }
         } // end anonymous inner class
      );

      // anonymous inner class enables user input on Floor if
      // Person enters Elevator on that Floor
      elevatorModel.addPersonMoveListener( 
         new PersonMoveListener() {

            // invoked when Person has entered Elevator
            public void personEntered( 
               PersonMoveEvent event )
            {
               // get Floor of departure 
               String location =
                  event.getLocation().getLocationName();

               // enable first JButton if first Floor departure
               if ( location.equals( FIRST_FLOOR_NAME ) )
                  firstControllerButton.setEnabled( true );

               // enable second JButton if second Floor
               else
                  secondControllerButton.setEnabled( true );

            } // end method personEntered

            // other methods implementing PersonMoveListener
            public void personCreated( 
               PersonMoveEvent event ) {}

            public void personArrived( 
               PersonMoveEvent event ) {}

            public void personExited( 
               PersonMoveEvent event ) {}

            public void personDeparted( 
               PersonMoveEvent event ) {}

            public void personPressedButton( 
               PersonMoveEvent event ) {}

         } // end anonymous inner class
      );
   } // end ElevatorController constructor
}