import java.awt.*;

import java.awt.event.*;

import java.beans.*;

import java.util.Random;

import javax.swing.*;

import javax.swing.border.*;

import javax.swing.event.*;

public class ComponentMoverDemo extends JPanel

implements ChangeListener

{

private JSpinner top;

private JSpinner bottom;

private JSpinner left;

private JSpinner right;

private JSpinner snapX;

private JSpinner snapY;

private ComponentMover cm1;

private ComponentMover cm2;

ComponentMoverDemo()

{

// drag event is passed from registered component to the Window

cm1 = new ComponentMover(Window.class);

// drag event is handled by registered component

cm2 = new ComponentMover();

setLayout( new BorderLayout() );

setBorder( new MatteBorder(4, 4, 4, 4, Color.BLUE) );

JComponent top = createTopPanel();

add(top, BorderLayout.NORTH);

JPanel center = new JPanel( new BorderLayout() );

center.setLayout( new BorderLayout(10, 10) );

center.setBorder( new EmptyBorder(10, 10, 10, 10) );

add(center, BorderLayout.CENTER);

JComponent left = createLeftPanel();

JComponent right = createRightPanel();

center.add(left, BorderLayout.CENTER);

center.add(right, BorderLayout.EAST);

JLabel label = new JLabel( "Tab off spinner for change to take effect" );

label.setHorizontalAlignment( JLabel.CENTER );

center.add(label, BorderLayout.SOUTH);

}

private JComponent createTopPanel()

{

JPanel titleBar = new JPanel( new BorderLayout() );

titleBar.setBackground( UIManager.getColor("InternalFrame.activeTitleBackground" ) );

cm1.registerComponent( titleBar );

JLabel title = new JLabel( " Componenent Mover - Dragable Title Bar" );

titleBar.add(title, BorderLayout.CENTER);

JButton close = new JButton( "X" );

close.addActionListener( new ActionListener()

{

public void actionPerformed(ActionEvent e)

{

System.exit(0);

}

});

titleBar.add(close, BorderLayout.EAST);

return titleBar;

}

private JComponent createLeftPanel()

{

JPanel panel = new JPanel( null );

panel.setBorder( new LineBorder(Color.BLUE) );

for (int i = 1; i < 4; i++)

{

JLabel label = new JLabel("Dragable Label " + i);

label.setSize( label.getPreferredSize() );

label.setLocation(20, 50 * i);

label.setOpaque(true);

label.setBackground( UIManager.getColor("InternalFrame.activeTitleBackground" ) );

panel.add( label );

cm2.registerComponent( label );

}

return panel;

}

public JPanel createRightPanel()

{

RelativeLayout rl = new RelativeLayout(RelativeLayout.Y_AXIS);

rl.setAlignment(RelativeLayout.LEADING);

rl.setFill( true );

JPanel main = new JPanel( rl );

JPanel snap = new JPanel( new GridLayout(0, 2, 5, 5) );

snap.setBorder( new TitledBorder("Snap Size:") );

snapX = new JSpinner(new SpinnerNumberModel(1, 1, 50 ,1));

snapX.addChangeListener( this );

snap.add( snapX );

snap.add( new JLabel("X") );

snapY = new JSpinner(new SpinnerNumberModel(1, 1, 50 ,1));

snapY.addChangeListener( this );

snap.add( snapY );

snap.add( new JLabel("Y") );

main.add( snap );

JPanel insets = new JPanel( new GridLayout(0, 2, 5, 5) );

insets.setBorder( new TitledBorder("Edge Insets:") );

top = new JSpinner(new SpinnerNumberModel(0, -50, 50 ,5));

top.addChangeListener( this );

insets.add( top );

insets.add( new JLabel("Top") );

left = new JSpinner(new SpinnerNumberModel(0, -50, 50 ,5));

left.addChangeListener( this );

insets.add( left );

insets.add( new JLabel("Left") );

bottom = new JSpinner(new SpinnerNumberModel(0, -50, 50 ,5));

bottom.addChangeListener( this );

insets.add( bottom );

insets.add( new JLabel("Bottom") );

right = new JSpinner(new SpinnerNumberModel(0, -50, 50 ,5));

right.addChangeListener( this );

insets.add( right );

insets.add( new JLabel("Right") );

main.add( insets );

return main;

}

public void stateChanged(ChangeEvent e)

{

Dimension snapDimension = new Dimension((Integer)snapX.getValue(), (Integer)snapY.getValue());

cm1.setSnapSize( snapDimension );

cm2.setSnapSize( snapDimension );

Insets boundsInsets = new Insets(

(Integer)top.getValue(), (Integer)left.getValue(), (Integer)bottom.getValue(), (Integer)right.getValue());

cm1.setEdgeInsets( boundsInsets );

cm2.setEdgeInsets( boundsInsets );

}

public static void main(String[] args)

{

SwingUtilities.invokeLater(new Runnable() {

public void run() {

createAndShowGUI();

}

});

}

public static void createAndShowGUI()

{

JFrame frame = new JFrame("Component Mover");

frame.setUndecorated(true);

frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

frame.add( new ComponentMoverDemo() );

frame.setSize(400, 300);

frame.setLocationRelativeTo(null);

frame.setVisible(true);

// drag frame from anywhere a MouseEvent is not handled

new ComponentMover(frame, frame.getRootPane());

}

}