examples
Class Example6

java.lang.Object
  examples.Example6

All Implemented Interfaces:

java.awt.event.ActionListener, java.util.EventListener

public class Example6
extends java.lang.Object
implements java.awt.event.ActionListener

An example that illustrates how to add or remove components. On launching the first image appears with two buttons. When the Remove Cancel button is pressed, the Cancel button disappears as is shown in the second image, and the text in the first button changes to Add Cancel. The window changes to the first image when the Add Cancel button is pressed.

        private JButton cancel;
        private JButton mutate;
        private Cell cancelCell;
        private boolean cancelShown;
        private Container container;
        private Row mainRow;
        private PageLayout lay=null;
        public Example6()
        {

                // The main frame.
                JFrame frame=new JFrame();
                frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
                container =frame.getContentPane();

                // The components
                mutate=new JButton("Remove Cancel");
                cancel=new JButton("Cancel");
                mutate.addActionListener(this);

                // The main row.
                cancelCell=new ComponentCell(cancel);
                mainRow=new Row(mutate);
                mainRow.add(cancelCell);
                cancelShown=true;

                // Construct the layout
                lay=mainRow.createLayout(container);

                frame.pack();
                frame.setLocation(300,300);
                frame.setVisible(true);

        }
        public void actionPerformed(ActionEvent e)
        {
                if(cancelShown)
                {
                        //Remove the Cancel button and change text.
                        mainRow.removeComponent(cancel);
                        mutate.setText("Add Cancel");

                }
                else
                {
                        //Add the Cancel button and change text.
                        mainRow.add(cancelCell);
                        cancelCell.addComponentsToContainer(container);
                        mutate.setText("Remove Cancel");
                }
                mainRow.invalidate();
                cancelShown=!cancelShown;
                container.validate();
                container.repaint();
        }

Constructor Summary

Example6()

Method Summary

void	actionPerformed(java.awt.event.ActionEvent e)
static void	main(java.lang.String[] args)
static void	run()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Example6

public Example6()

Method Detail

actionPerformed

public void actionPerformed(java.awt.event.ActionEvent e)

Specified by:

actionPerformed in interface java.awt.event.ActionListener

main

public static void main(java.lang.String[] args)

run

public static void run()