Java Framework, Example, Swing, Wizard, Framework

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A very simple demonstration of a forming a wizard of screens using Java's Swing API. This example will walk you through this example code, whereby there will be set of three buttons shown in the bottom section, and a dialog screen will be populated based on the user's selection of Next/ Previous Buttons. Finish button will only be enabled when there is the last screen being shown on screen. Source code is as follows: WizardFrame.java

import java.io.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;


/**
* Sample test program to show 13 frames using this Wizard
* component.
*
*/

public class WizardFrame extends JFrame
{
        public WizardFrame()
        {
	try{
		setSize(800,600);
		show();
		WizardModal wm = new WizardModal();
		wm.setSize(400,300);
		wm.setLocation(200,100);
		TestFrame tf1 = new TestFrame("One");
		tf1.setSize(100,100);
		TestFrame tf2 = new TestFrame("Two");
		tf2.setSize(100,100);
		TestFrame1 tf3 = new TestFrame1();
		tf3.setSize(100,100);
		TestFrame tf4 = new TestFrame("Four");
		tf4.setSize(300,400);
		TestFrame tf5 = new TestFrame("Five");
		tf5.setSize(300,400);
		TestFrame tf6 = new TestFrame("Six");
		tf6.setSize(300,400);
		TestFrame tf7 = new TestFrame("Seven");
		tf7.setSize(300,400);
		TestFrame tf8 = new TestFrame("Eight");
		tf8.setSize(300,400);
		TestFrame tf9 = new TestFrame("Nine");
		tf9.setSize(300,400);
		TestFrame tf10 = new TestFrame("Ten");
		tf10.setSize(300,400);
		TestFrame tf11 = new TestFrame("Eleven");
		tf11.setSize(300,400);
		TestFrame tf12 = new TestFrame("Twelve");
		tf12.setSize(300,400);
		TestFrame tf13 = new TestFrame("Thirteen");
		tf13.setSize(300,400);

		Object[] obj = new Object[13];
		obj[0] = tf1;
		obj[1] = tf2;
		obj[2] = tf3;
		obj[3] = tf4;
		obj[4] = tf5;
		obj[5] = tf6;
		obj[6] = tf7;
		obj[7] = tf8;
		obj[8] = tf9;
		obj[9] = tf10;
		obj[10] = tf11;
		obj[11] = tf12;
		obj[12] = tf13;

		wm.addPages(obj);
		wm.show();
		this.addWindowListener(new WindowAdapter(){
			public void windowClosing(WindowEvent we)
			{
				System.exit(0);
			}
		});
	}catch(Exception ex){
		ex.printStackTrace();
	}
        }

        public static void main(String args[])
        {
                new WizardFrame();
        }
}


/**
* This is the modal dialog box that contains the Wizard screen.
*
*/

class WizardModal extends JDialog
{
        java.util.Vector pages = new java.util.Vector();
        static JPanel jp = new JPanel();
        static JPanel jp1 = new JPanel();
        JButton jbNext;
        JButton jbPrevious;
        JButton jbFinish;

        int pageCounter = 0;
        static WizardModal wm;
        boolean nextStatus = true;
        boolean previousStatus = true;
        boolean finishStatus = false;

        JPanel jp2;

        public WizardModal()
        {
	setModal(true);
	jbNext = new JButton("Next");
	jbPrevious = new JButton("Previous");
	jbFinish = new JButton("Finish");
	jp.add(jbNext);
	jp.add(jbPrevious);
	jp.add(jbFinish);
	this.getContentPane().add(jp,BorderLayout.SOUTH);
	this.getContentPane().add(jp1,BorderLayout.CENTER);
	validateButtons(pageCounter);
	wm = this;
	jbNext.addMouseListener(new MouseAdapter(){
	public void mouseClicked(MouseEvent me)
	{
		if(me.getSource() == jbNext && nextStatus)
		{
		if(jp2 instanceof TestFrame1)
		{
		  System.out.println(((TestFrame1)jp2).jtxt1.getText());
		}

		pageCounter++;
		decidePage(pageCounter);
		validateButtons(pageCounter);
		wm.show();
		}
	}
	});
	jbPrevious.addMouseListener(new MouseAdapter(){
	public void mouseClicked(MouseEvent me)
	{
		if(me.getSource() == jbPrevious && previousStatus)
		{
			pageCounter--;
			decidePage(pageCounter);
			validateButtons(pageCounter);
			wm.show();
		}
	}
	});

        }
        public void show()
        {
                super.show();
        }
        public void setLocation(int x, int y)
        {
                super.setLocation(x,y);
        }
        public void setSize(int w, int h)
        {
                super.setSize(w,h);
        }
        public void setPage(int index,Object page)
        {
                pages.set(index,page);
        }
        public Object getPage(int index)
        {
                return pages.get(index);
        }
        public Object firstPage()
        {
                return pages.firstElement();
        }
        public Object lastPage()
        {
                return pages.lastElement();
        }
        public Object pageAt(int index)
        {
                return pages.elementAt(index);
        }
        public void addPages(Object[] pages1)
        {
                for(int i=0;i<pages1.length;i++)
                {
                        pages.addElement(pages1[i]);
                }
        }

/**
*  Validating which button to show and which one to disable.
*
*/

        public void validateButtons(int pageCounter)
        {
                if(pageCounter == 0)
                {
                        jbPrevious.setEnabled(false);
                        previousStatus = false;
                        jbFinish.setEnabled(false);
                        finishStatus = false;

                } else{
                        jbPrevious.setEnabled(true);
                        previousStatus = true;
                }

                if(pageCounter == pages.size()-1)
                {
                        jbNext.setEnabled(false);
                        nextStatus = false;
                        jbFinish.setEnabled(true);
                        finishStatus = true;

                } else{

                        jbNext.setEnabled(true);
                        nextStatus = true;
                        jbFinish.setEnabled(false);
                        finishStatus = false;

                }

        }

/**
*  This is the method that decides which page to show.
*
*/

        public void decidePage(int pageCounter)
        {
              this.getContentPane().remove(1);
              jp2 = (JPanel)pageAt(pageCounter);
              this.getContentPane().add(jp2,BorderLayout.CENTER);
              this.setTitle("Page no:"+(pageCounter+1));
              this.getContentPane().update(jp2.getGraphics());
        }
}


/**
* This is a test frame to be enbedded onto the wizard screen.
*
*/


class TestFrame extends JPanel
{
        JLabel jlbl;
        String lbl;
        public TestFrame(String title)
        {
                lbl = title;
                jlbl = new JLabel(title);
                setLayout(new BorderLayout());
                add(jlbl,BorderLayout.SOUTH);
        }
}


/**
* This is a test frame to be enbedded onto the wizard screen.
*
*/

class TestFrame1 extends JPanel
{
        JLabel jlbl;
        public JTextField jtxt;
        public JLabel jlbl1;
        public JTextField jtxt1;
        JLabel jlbl2;
        JTextField jtxt2;

  public TestFrame1()
  {
	jlbl = new JLabel("Name : ");
	jtxt = new JTextField(10);
	jlbl1 = new JLabel("Address : ");
	jtxt1 = new JTextField(10);
	jlbl2 = new JLabel("Phone : ");
	jtxt2 = new JTextField(10);
	setLayout(new FlowLayout());
	add(jlbl);
	add(jtxt);
	add(jlbl1);
	add(jtxt1);
	add(jlbl2);
	add(jtxt2);
  }
}

In this source code I am using some of the deprecated method as well, as this example is not something usable in real project as it is, instead one can take some of the good thing from this code to start with, in order to comeup with some sort of better and advanced usable code/Framework. Initially I had thought of creating a Framework which can be used across multiple projects, may be released as open source, and usable enough to be plug and use kind of wizard Framework. So this example could be the starting point or a POC of this roadmap. In my free time I shall think of creating a robost design and a very loosely coupled framework having these screens, buttons, dialog boxes being separately customizable and easily integrated in this code wizard framework using Java Swing API. Any feedback/suggestions/discussion on this very topic will be highly appreciated.

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