Programmable Host On-Demand

Display session sample application

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.File;
                                        
import com.ibm.eNetwork.HOD.customizable.*;
import com.ibm.eNetwork.beans.HOD.*;

public class Sample1 extends JFrame {


    JMenuBar menuBar = new JMenuBar();
    CustomDesktop desktop = null;
    HODDisplaySession session = null;

    public static void main(String[] args)
    {
        new Sample1().run();
    }

    private Sample1()
    {
    }

    void run()
    {

        HODSessionManager sm = new HODSessionManager();

        /*
         * For this sample, we are assuming files created by the Deployment Wizard
         * are in c:\MyApplication\demo\HODData\sample1 directory
         *
         * Therefore, I need to create a File object to c:\MyApplication\demo directory.
         */

        try {

            File file = new File("c:\\MyApplication\\demo");
            desktop = sm.createCustomDesktop(this, file, "sample1");

        } catch (Exception e) { }

        buildMenus();
        setJMenuBar(menuBar);
        if (desktop != null) createTerminal();

        addWindowListener(new WindowAdapter() {
                public void windowClosing(WindowEvent we) {
                    myExit();
                }
        });

        Toolkit toolkit = this.getToolkit();
        Dimension screenSize = toolkit.getScreenSize();

        this.setSize(screenSize.width*2/3, screenSize.height*2/3);

        this.setLocation( (screenSize.width-getWidth()) / 2, (screenSize.height-getHeight()) / 2 );

        show();
    }

    void buildMenus()
    {

        JMenu menu = new JMenu("File");
        JMenuItem menuItem = new JMenuItem("Exit");
        menu.add(menuItem);
        menuItem.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent ae) {
                    myExit();
                }
        });
        menuBar.add(menu);
    }

    void createTerminal()
    {

        try {
            session = desktop.startDisplaySession("3270 Display");
            if (session != null) {
               this.getContentPane().add(session.getTerminal());
               
               JMenu menu = new JMenu("HOD Session");
               menuBar.add(menu);

               JMenuBar hodMenuBar = session.getHODMenubar();
               MenuElement[] menuElements = hodMenuBar.getSubElements();
               int count = hodMenuBar.getMenuCount();
               for (int i = 0; i < menuElements.length; i++) {
                  menu.add((JMenu)menuElements[i]);
               }
            }
        } catch (Exception e) {
        }
    }

    void myExit()
    {
        if (desktop != null) {
            desktop.closeAllSessions();
        }
        System.exit(0);
    }
}

Sample application explanation

The following explains each statement or group of statements used in this sample program. Only those statements that involve the Programmable Host On-Demand API are explained.

Import the necessary packages as follows:

  import javax.swing.*;
  import java.awt.*;
  import java.awt.event.*;
  import java.io.File;
  import com.ibm.eNetwork.HOD.customizable.*;
  import com.ibm.eNetwork.beans.HOD.*;

Create a simple Java class called Sample which extends JFrame:
```
 public class Sample extends JFrame { 
```

Create instance variables.

        JMenuBar menuBar = new JMenuBar();
        CustomDesktop desktop = null;
        HODDisplaySession session = null;

Create the HODSessionManager and CustomDesktop objects:

        HODSessionManager sm = new HODSessionManager();

        /*
         * For this sample, we are assuming files created by the Deployment Wizard
         * are in c:\MyApplication\demo\HODData\sample1 directory
         *
         * Therefore, I need to create a File object to c:\MyApplication\demo directory
         * and when I create the CustomDesktop object, I pass in "sample1" to tell the
         * API to look in the "sample1" directory under HODData.
         */

        try {

            File file = new File("c:\\MyApplication\\demo");
            desktop = sm.createCustomDesktop(this, file, "sample1");

        } catch (Exception e) { }

Start a 3270 session and add it to the JFrame:

        void createTerminal()
        {

          try {
            session = desktop.startDisplaySession("3270 Display");
            if (session != null) {
               this.getContentPane().add(session.getTerminal());

               JMenu menu = new JMenu("HOD Session");
               menuBar.add(menu);

               JMenuBar hodMenuBar = session.getHODMenubar();
               MenuElement[] menuElements = hodMenuBar.getSubElements();
               int count = hodMenuBar.getMenuCount();
               for (int i = 0; i < menuElements.length; i++) {
                    menu.add((JMenu)menuElements[i]);
               }
            }

          } catch (Exception e) {}
        }

Run the sample application

To run Sample1, save the sample program in a file called Sample1.java and compile it. You can run the the application by executing the following command:

    java -classpath .;hoddbg2.jar;hacp.jar;ha_en.jar;hodimg.jar Sample1

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