what's wrong with my component?

From:
"dxuranus" <dxuranus@gmail.com>
Newsgroups:
comp.lang.java.programmer
Date:
15 Aug 2006 01:54:18 -0700
Message-ID:
<1155632058.050845.192300@i3g2000cwc.googlegroups.com>
  i make a new component which is a dragable icon here is my piece of
code

//class: DragAbleComponent.the father of my component

import java.awt.Graphics;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;

import javax.accessibility.Accessible;
import javax.swing.JComponent;

public abstract class DragAbleComponent extends JComponent implements
MouseListener,
        FocusListener, Accessible ,MouseMotionListener{
    private int X;

    private int Y;

    /**
     *
     */
    private static final long serialVersionUID = 1L;

    public void mouseClicked(MouseEvent e) {
        this.requestFocusInWindow();

    }

    public void mouseEntered(MouseEvent e) {}

    public void mouseExited(MouseEvent e) {}

    public void mousePressed(MouseEvent e) {}

    public void mouseReleased(MouseEvent e) {}

    public void focusGained(FocusEvent e) {
        this.repaint();}

    public void focusLost(FocusEvent e) {
    this.repaint();}

     protected abstract void paintComponent(Graphics graphics);

    public int getX() {
        return X;
    }

    public void setX(int x) {
        X = x;
    }

    public int getY() {
        return Y;
    }

    public void setY(int y) {
        Y = y;
    }
}

//class:DragableIcon the component

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.event.InputEvent;
import java.awt.event.MouseEvent;

import javax.swing.Action;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JComponent;
import javax.swing.KeyStroke;
import javax.swing.TransferHandler;

public class DragableIcon extends DragAbleComponent {

    private Image image;

     private MouseEvent firstMouseEvent = null;

     private static boolean installKeyBordMapings = true;
    /**
     *
     */
    private static final long serialVersionUID = 1L;

    public DragableIcon(Image image) {
        super();
        this.image = image;
        this.setFocusable(true);
        this.addMouseListener(this);
        this.addFocusListener(this);
        this.addMouseMotionListener(this);
        this.initKeyBordMaping();

    }

    private void initKeyBordMaping(){
         if (installKeyBordMapings) {
                InputMap imap = this.getInputMap();
// imap.put(KeyStroke.getKeyStroke("ctrl X"),
//
TransferHandler.getCutAction().getValue(Action.NAME));
                imap.put(KeyStroke.getKeyStroke("ctrl C"),

TransferHandler.getCopyAction().getValue(Action.NAME));
                imap.put(KeyStroke.getKeyStroke("ctrl V"),

TransferHandler.getPasteAction().getValue(Action.NAME));
            }

         ActionMap map = this.getActionMap();
//
map.put(TransferHandler.getCutAction().getValue(Action.NAME),
// TransferHandler.getCutAction());
            map.put(TransferHandler.getCopyAction().getValue(Action.NAME),
                    TransferHandler.getCopyAction());

map.put(TransferHandler.getPasteAction().getValue(Action.NAME),
                    TransferHandler.getPasteAction());
    }
    @Override
    protected void paintComponent(Graphics graphics) {
         Graphics g = graphics.create();

            //Draw in our entire space, even if isOpaque is false.
            g.setColor(Color.WHITE);
            g.fillRect(0, 0, image == null ? 125 : image.getWidth(this),
                             image == null ? 125 : image.getHeight(this));

            if (image != null) {
                //Draw image at its natural size of 125x125.
                g.drawImage(image, 0, 0, this);
            }

            //Add a border, red if picture currently has focus
            if (isFocusOwner()) {
                g.setColor(Color.RED);
            } else {
                g.setColor(Color.BLACK);
            }
            g.drawRect(0, 0, image == null ? 125 : image.getWidth(this),
                             image == null ? 125 : image.getHeight(this));
           // g.drawImage(image, 0, 0, this);
            g.dispose();

    }

    public void mouseDragged(MouseEvent e) {

        //Don't bother to drag if the component displays no image.
        if (image == null) return;

        if (firstMouseEvent != null) {
            e.consume();

            //If they are holding down the control key, COPY rather
than MOVE
            int ctrlMask = InputEvent.CTRL_DOWN_MASK;
            int action = ((e.getModifiersEx() & ctrlMask) == ctrlMask)
?
                  TransferHandler.COPY : TransferHandler.MOVE;

            int dx = Math.abs(e.getX() - firstMouseEvent.getX());
            int dy = Math.abs(e.getY() - firstMouseEvent.getY());
            //Arbitrarily define a 5-pixel shift as the
            //official beginning of a drag.
            if (dx > 5 || dy > 5) {
                //This is a drag, not a click.
                JComponent c = (JComponent)e.getSource();
                TransferHandler handler = c.getTransferHandler();
                //Tell the transfer handler to initiate the drag.
                handler.exportAsDrag(c, firstMouseEvent, action);
                firstMouseEvent = null;
            }
        }

    }

    public void mouseMoved(MouseEvent e) {}

     public void mousePressed(MouseEvent e) {
            //Don't bother to drag if there is no image.
            if (image == null) return;

            firstMouseEvent = e;
            e.consume();
        }

     public void mouseReleased(MouseEvent e) {
            firstMouseEvent = null;
        }

    public static boolean isInstallKeyBordMapings() {
        return installKeyBordMapings;
    }

    public static void setInstallKeyBordMapings(boolean
installKeyBordMapings) {
        DragableIcon.installKeyBordMapings = installKeyBordMapings;
    }

    public Image getImage() {
        return image;
    }

    public void setImage(Image image) {
        this.image = image;
    }
}

//and here is my pane

import java.awt.BorderLayout;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;

import javax.swing.ImageIcon;
import javax.swing.JPanel;
import javax.swing.JToolBar;

import cn.com.ynld.bms.applet.gui.handler.IconTransferHandler;
import cn.com.ynld.bms.applet.service.TransfAble;
import cn.com.ynld.bms.applet.service.UpdateAble;

public class ElectronicPane extends JPanel
                                                                implements ItemListener,UpdateAble{
private UpdateAble updateAble = null;

private ScrollAbleImage image;
private JToolBar toolBar;
private IconTransferHandler handler;
    /**
     *
     */
    private static final long serialVersionUID = 1L;

    public ElectronicPane(){

        super(new BorderLayout());
        handler = new IconTransferHandler();
    this.creatToolBar();
    this.add(this.toolBar);
    this.setTransferHandler(handler);

    }

    public void itemStateChanged(ItemEvent e) {}

    public void addTransferAble(String key, TransfAble transferAble) {
        // TODO

    }

    public TransfAble getTransferAble(String key) {
        // TODO
        return null;
    }

    public void removeTransferAble(String key) {
        this.updateAble.removeTransferAble(key);

    }

    public void update(UpdateAble updateAble) {
        this.updateAble = updateAble;
        this.init();

    }

    private void init(){
        this.image = new ScrollAbleImage();
        this.image.update(updateAble);
        this.add(image,BorderLayout.CENTER);
        this.repaint();
        //this.image.repaint();
    }

    private void creatToolBar(){

        this.toolBar = new JToolBar();

        DragableIcon alarm = new
DragableIcon(createImageIcon("/root/Desktop/drawing/png-0003.png",
"alarm").getImage());
        alarm.setTransferHandler(handler);

        DragableIcon damage = new
DragableIcon(createImageIcon("/root/Desktop/drawing/png-0007.png",
"device").getImage());
        alarm.setTransferHandler(handler);
        this.toolBar.add(alarm);
        this.toolBar.addSeparator();
        this.toolBar.add(damage);
        this.toolBar.setFloatable(false);

    }

     /** Returns an ImageIcon, or null if the path was invalid. */
    protected static ImageIcon createImageIcon(String path,
                                               String description) {
       // java.net.URL imageURL =
DragPictureDemo.class.getResource(path);

        if (path == null) {
            System.err.println("Resource not found: "
                               + path);
            return null;
        } else {
            return new ImageIcon(path, description);
        }
    }

}

the problem is i add DragableIcons to my toolbar but only the first
icon can be seen!!!!
what's wrong
thanks for any help!

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