145 lines
4.5 KiB
Java
145 lines
4.5 KiB
Java
import java.awt.BorderLayout;
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import java.awt.EventQueue;
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import java.awt.Frame;
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import java.awt.GridLayout;
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import java.awt.event.ActionEvent;
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import java.lang.reflect.InvocationTargetException;
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import javax.swing.AbstractAction;
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import javax.swing.JButton;
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import javax.swing.JComboBox;
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import javax.swing.JFrame;
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import javax.swing.JLabel;
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import javax.swing.JOptionPane;
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import javax.swing.JPanel;
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import javax.swing.border.EmptyBorder;
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public class WindowController extends JFrame {
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// Create UI on correct thread
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public static void main( final String[] args ) {
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EventQueue.invokeLater (
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new Runnable() {
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public void run() {
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new WindowController();
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}
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}
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);
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}
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private JComboBox list;
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// Button class to call the right method
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private class ControlButton extends JButton {
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private ControlButton( final String name ) {
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super(
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new AbstractAction( name ) {
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public void actionPerformed( final ActionEvent e ) {
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try {
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WindowController.class.getMethod( "do" + name )
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.invoke ( WindowController.this );
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} catch ( final Exception x ) { // poor practice
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x.printStackTrace(); // also poor practice
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}
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}
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}
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);
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}
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}
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// UI for controlling windows
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public WindowController() {
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super( "Controller" );
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final JPanel main = new JPanel();
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final JPanel controls = new JPanel();
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setLocationByPlatform( true );
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setResizable( false );
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setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
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setLayout( new BorderLayout( 3, 3 ) );
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getRootPane().setBorder( new EmptyBorder( 3, 3, 3, 3 ) );
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add( new JLabel( "Add windows and control them." ), BorderLayout.NORTH );
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main.add( list = new JComboBox() );
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add( main, BorderLayout.CENTER );
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controls.setLayout( new GridLayout( 0, 1, 3, 3 ) );
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controls.add( new ControlButton( "Add" ) );
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controls.add( new ControlButton( "Hide" ) );
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controls.add( new ControlButton( "Show" ) );
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controls.add( new ControlButton( "Close" ) );
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controls.add( new ControlButton( "Maximise" ) );
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controls.add( new ControlButton( "Minimise" ) );
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controls.add( new ControlButton( "Move" ) );
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controls.add( new ControlButton( "Resize" ) );
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add( controls, BorderLayout.EAST );
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pack();
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setVisible( true );
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}
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// These are the windows we're controlling, but any JFrame would do
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private static class ControlledWindow extends JFrame {
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private int num;
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public ControlledWindow( final int num ) {
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super( Integer.toString( num ) );
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this.num = num;
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setLocationByPlatform( true );
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getRootPane().setBorder( new EmptyBorder( 3, 3, 3, 3 ) );
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setDefaultCloseOperation( JFrame.DISPOSE_ON_CLOSE );
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add( new JLabel( "I am window " + num + ". Use the controller to control me." ) );
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pack();
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setVisible( true );
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}
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public String toString() {
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return "Window " + num;
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}
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}
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// Here comes the useful bit - window control code
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// Everything else was just to allow us to do this!
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public void doAdd() {
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list.addItem( new ControlledWindow( list.getItemCount () + 1 ) );
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pack();
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}
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public void doHide() {
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( ( JFrame ) list.getSelectedItem() ).setVisible( false );
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}
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public void doShow() {
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( ( JFrame ) list.getSelectedItem() ).setVisible( true );
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}
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public void doClose() {
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( ( JFrame ) list.getSelectedItem() ).dispose();
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}
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public void doMinimise() {
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( ( JFrame ) list.getSelectedItem() ).setState( Frame.ICONIFIED );
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}
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public void doMaximise() {
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( ( JFrame ) list.getSelectedItem() ).setExtendedState( Frame.MAXIMIZED_BOTH );
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}
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public void doMove() {
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( ( JFrame ) list.getSelectedItem() ).setLocation
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(
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Integer.parseInt( JOptionPane.showInputDialog( "Horizontal position?" ) ),
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Integer.parseInt( JOptionPane.showInputDialog( "Vertical position?" ) )
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);
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}
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public void doResize() {
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final JFrame window = ( JFrame ) list.getSelectedItem();
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window.setBounds
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(
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window.getX(),
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window.getY(),
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Integer.parseInt( JOptionPane.showInputDialog( "Width?" ) ),
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Integer.parseInt( JOptionPane.showInputDialog( "Height?" ) )
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);
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}
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}
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