// class ElevatorFrame.java
//:Assignment 4:
//:Student Name: Duo Zhou
//:Studnet Number: 722452
/**FileName: ElevatorFrame.java
* Date: July, 27, 2000
* Purpose: Learn how to use JFrame, JPanel, Synchronized method, creating
* multithread, the basic idea of creating GUI
* Name of Files: This assignment include Building.java, ConnectedWall.java,
* Elevator.java, ElevatorFrame.java, ElevatorPanel.java,
* Floor.java, MailDeliveryApp.java, MailPiece.java,
* Position.java, Robot.java
* Brief Discription: This file is added to create a new JFrame of the elevator.
*/
import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
class ElevatorFrame extends JFrame{
private int userTargetFloorno; //user target floor number;
private int userFloorno; //the floor number that user currently stayed;
private int robotFloorno; //the robot stayed floor number;
private Elevator elevator; //hold a reference to the Elevator;
private Building building; //hold a reference to the Building;
private static ElevatorFrame elevatorFrameSingletone; //hold a reference of this JFrame;
private static ElevatorPanel elevatorPanel; //hold a reference to the ElevatorPanel;
private static Container content; //hold a reference to the Container;
//********************************Constructor **************************************
ElevatorFrame(int preno, int tarno, Building building) {
this.building=building; //get the reference of current building;
this.elevator=building.getElevator(); //get a reference of current Elevator;
userFloorno=preno; //user's stayed floor number;
userTargetFloorno=tarno; //user's target floor number;
setTitle("Elevator Frame, seen from side"); //set the title of this frame;
content=getContentPane(); //create a ContentPanel
elevatorPanel= new ElevatorPanel(userFloorno, userTargetFloorno, building);
//create ElevatorPanel;
elevatorPanel.setLayout(new BorderLayout()); //set BorderLayout;
content.add(elevatorPanel, BorderLayout.CENTER);//place the panel to the center;
setSize(150, 700); //set the JFrame size;
//*********** Add WindowListener, to let it respond to WindowEvent ***********
WindowListener wndCloser = new WindowAdapter() {
public void windowClosing(WindowEvent e)
{
dispose();
}
};
addWindowListener(wndCloser); //add the WindowListener;
pack(); //pack;
setResizable(true); //Resizable;
setVisible(true); //set Visible;
}//end of Constructor;
//**************Check to see if the frame has already displayed *********************
//If we have already make a reference of the current JFrame, then we don't need to
//create another one, instead, we can just remove the old panel, then add a new
//panel to the current JFrame.
public static ElevatorFrame getElevator(int preno, int tarno, Building building) {
if (elevatorFrameSingletone ==null) { //if no reference is made, then create another;
elevatorFrameSingletone= new ElevatorFrame(preno, tarno, building);
}
else { //if we have already made a reference to the JFrame, then
content.remove(elevatorPanel); //remove the old panel;
elevatorPanel= new ElevatorPanel(preno, tarno, building); //add a new panel;
elevatorPanel.setLayout(new BorderLayout()); //set BorderLayout;
content.add(elevatorPanel, BorderLayout.CENTER); //add the new panel to the center;
elevatorFrameSingletone.setSize(150, 700); //set the size to the original size;
elevatorFrameSingletone.pack(); //pack;
elevatorFrameSingletone.setVisible(true); //set Visible again;
}
return elevatorFrameSingletone; //send it back to MailDeliveryApplication;
}
}//end of ElevatorFrame