Drag and drop JLabel while preserving the original JLabel - jlabel

Question

I am working on a GUI that displays an image of a floor plan (JLabel with ImageIcon) and a number of small icons (JLabels with ImageIcon) down the left hand side. The idea is to be able to select one of the icons and drag and drop it onto a position on the floor plan. My code is working fine except that when you drag an icon onto the floor plan, I need the original icon to remain in place, so it can be placed in several other positions on the floor plan if required. So I need to be able to clone the icon that I am moving when the mouse is pressed.
My code below shows a temp fix between the //******** markers but of course this only works correctly for the topmost icon. I need to somehow clone "Component comp" as a new JLabel.
Below is the relevant part of my code:
class MouseHandler extends MouseAdapter {
private Component dragComponent;
private Sidebar board;
private Point dragOffset;
public MouseHandler(Sidebar board) {
this.board = board;
}
public Sidebar getBoard() {
return board;
}
#Override
public void mousePressed(MouseEvent e) {
Component comp = getBoard().getComponentAt(e.getPoint());
if (comp != null) {
if (comp instanceof JLabel) {
//**************
String imagePath = "/Downlight 1.gif";
Image Images = new ImageIcon(this.getClass().getResource(imagePath)).getImage();
String path = "Images" + imagePath;
ImageIcon icon = new ImageIcon(path);
JLabel lbl = new JLabel(icon);
lbl.setBounds(22, 26, 36, 36);
lbl.setIcon(new ImageIcon(Images));
lbl.setOpaque(true);
Sidebar board = getBoard();
board.add(lbl, new Point(40, 44));
board.setComponentZOrder(lbl, 0);
//**************
dragComponent = comp;
dragOffset = new Point();
dragOffset.x = e.getPoint().x - comp.getX();
dragOffset.y = e.getPoint().y - comp.getY();
}
}
}
#Override
public void mouseDragged(MouseEvent e) {
if (dragComponent != null) {
board = getBoard();
Point dragPoint = new Point();
dragPoint.x = e.getPoint().x - dragOffset.x;
dragPoint.y = e.getPoint().y - dragOffset.y;
dragComponent.setLocation(dragPoint);
}
}
#Override
public void mouseReleased(MouseEvent e) {
if (dragComponent != null) {
dragComponent = null;
}
}
}
}
Thanks in advance for any help with this.

Answer 1

I found a solution that enabled me to copy the icon and bounds of the original JLabel to a new JLabel, which replaces the one being dragged:
#Override
public void mousePressed(MouseEvent e) {
Component comp = getBoard().getComponentAt(e.getPoint());
if (comp != null) {
if (comp instanceof JLabel) {
JLabel label = (JLabel) comp;
ImageIcon icon = ((ImageIcon)label.getIcon());
Rectangle rect = label.getBounds();
JLabel lbl = new JLabel(icon);
lbl.setBounds(rect);
lbl.setVisible(true);;
lbl.setOpaque(true);
Mainpanel board = getBoard();
board.add(lbl);
board.setComponentZOrder(lbl, 0);
dragComponent = comp;
dragOffset = new Point();
dragOffset.x = e.getPoint().x - comp.getX();
dragOffset.y = e.getPoint().y - comp.getY();
}
}
}