Adding mouselisteners to JPanels created through for loop

Question

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.io.File;
import java.io.IOException;
import java.util.Vector;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
import javax.swing.SwingConstants;
import javax.swing.filechooser.FileSystemView;
public class ScrollableWrapTest {
    public static void main(String[] args) {
        try {
              ScrollableWrapTest st = new ScrollableWrapTest();
            final JPanel mainPanel = new JPanel(new WrapScollableLayout(FlowLayout.LEFT, 10, 10));
            mainPanel.setBackground(Color.WHITE);
            JScrollPane pane = new JScrollPane(mainPanel);
            pane.setPreferredSize(new Dimension(550, 300));
            Vector v = new Vector();
            v.add("first.doc");
            v.add("second.txt");
            v.add("third.pdf");
            v.add("fourth.rar");
            v.add("fifth.zip");
            v.add("sixth.folder");
            v.add("seventh.exe");
            v.add("eighth.bmp");
            v.add("nineth.jpeg");
            v.add("tenth.wav");
            JButton button = null;
            for(int i =0;i<v.size();i++){
                JPanel panel = new JPanel(new BorderLayout());
                Icon icon = st.getIcone(st.getExtension(v.elementAt(i).toString().toUpperCase()));
                  panel.setBackground(Color.WHITE);
                 Action action = new AbstractAction("", icon) {
                     public void actionPerformed(ActionEvent evt) {
                 button = new JButton(action);
                 button.setPreferredSize(new Dimension(icon.getIconWidth(), icon.getIconHeight()));
                 JPanel buttonPanel = new JPanel();
                 buttonPanel.setBackground(Color.WHITE);
                 buttonPanel.add(button);
                 JLabel label = new JLabel((String)v.elementAt(i));
                 label.setHorizontalAlignment(SwingConstants.CENTER);
                 panel.add(buttonPanel , BorderLayout.NORTH);
                 panel.add(label, BorderLayout.SOUTH);
                 mainPanel.add(panel);
                mainPanel.revalidate();
            st.buildGUI(pane);
        } catch (Exception e) {e.printStackTrace();}
    public void buildGUI(JScrollPane scrollPane)
         JFrame frame = new JFrame("Scrollable Wrap Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(scrollPane, BorderLayout.CENTER);
        frame.setLocationRelativeTo(null);
        frame.pack();
        frame.setVisible(true);
    public String getExtension(String name)
          if(name.lastIndexOf(".")!=-1)
               String extensionPossible = name.substring(name.lastIndexOf(".")+1, name.length());
               if(extensionPossible.length()>5)
                    return "";
               else
                    return extensionPossible;
          else return "";
     public Icon getIcone(String extension)
          //we create a temporary file on the local file system with the specified extension
          File file;
          String cheminIcone = "";
          if(((System.getProperties().get("os.name").toString()).startsWith("Mac")))
               cheminIcone = System.getProperties().getProperty("file.separator");
          else if(((System.getProperties().get("os.name").toString()).startsWith("Linux")))
               //cheminIcone = FileSystemView.getFileSystemView().getHomeDirectory().getAbsolutePath()+
               cheminIcone = "/"+"tmp"+"/BoooDrive-"+System.getProperty("user.name")+"/";
          else cheminIcone = System.getenv("TEMP") + System.getProperties().getProperty("file.separator");
          File repIcone = new File(cheminIcone);
          if(!repIcone.exists()) repIcone.mkdirs();
          try
               if(extension.equals("FOLDER"))
                    file = new File(cheminIcone + "icon");
                    file.mkdir();
               else
                    file = new File(cheminIcone + "icon." + extension.toLowerCase());
                    file.createNewFile();
               //then we get the SystemIcon for this temporary File
               Icon icone = FileSystemView.getFileSystemView().getSystemIcon(file);
               //then we delete the temporary file
               file.delete();
               return icone;
          catch (IOException e){ }
          return null;
    private static class WrapScollableLayout extends FlowLayout {
        public WrapScollableLayout(int align, int hgap, int vgap) {
            super(align, hgap, vgap);
        public Dimension preferredLayoutSize(Container target) {
            synchronized (target.getTreeLock()) {
                Dimension dim = super.preferredLayoutSize(target);
                layoutContainer(target);
                int nmembers = target.getComponentCount();
                for (int i = 0 ; i < nmembers ; i++) {
                    Component m = target.getComponent(i);
                    if (m.isVisible()) {
                        Dimension d = m.getPreferredSize();
                        dim.height = Math.max(dim.height, d.height + m.getY());
                if (target.getParent() instanceof JViewport)
                    dim.width = ((JViewport) target.getParent()).getExtentSize().width;
                Insets insets = target.getInsets();
                dim.height += insets.top + insets.bottom + getVgap();
                return dim;
}How can I add mouse listener to each of the 'panel' in 'mainpanel' created inside the 'for loop' using the code mainPanel.add(panel);Rony

Answer 1

>
How can I add mouse listener to each of the 'panel' in 'mainpanel' created inside the 'for loop' using the code mainPanel.add(panel);
Change the first part of the code like this..
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.io.File;
import java.io.IOException;
import java.util.Vector;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JViewport;
import javax.swing.SwingConstants;
import javax.swing.filechooser.FileSystemView;
public class ScrollableWrapTest {
    public static void main(String[] args) {
        try {
              ScrollableWrapTest st = new ScrollableWrapTest();
            final JPanel mainPanel = new JPanel(new WrapScollableLayout(FlowLayout.LEFT, 10, 10));
            mainPanel.setBackground(Color.WHITE);
            JScrollPane pane = new JScrollPane(mainPanel);
            pane.setPreferredSize(new Dimension(550, 300));
            Vector<String> v = new Vector<String>();
            v.add("first.doc");
            v.add("second.txt");
            v.add("third.pdf");
            v.add("fourth.rar");
            v.add("fifth.zip");
            v.add("sixth.folder");
            v.add("seventh.exe");
            v.add("eighth.bmp");
            v.add("nineth.jpeg");
            v.add("tenth.wav");
            JButton button = null;
            MouseListener ml = new MouseAdapter() {
                    @Override
                    public void mouseClicked(MouseEvent me) {
                         System.out.println(me);
            for(int i =0;i<v.size();i++){
                JPanel panel = new JPanel(new BorderLayout());
                Icon icon = st.getIcone(st.getExtension(v.elementAt(i).toString().toUpperCase()));
                  panel.setBackground(Color.WHITE);
                 Action action = new AbstractAction("", icon) {
                     public void actionPerformed(ActionEvent evt) {
                 button = new JButton(action);
                 button.setPreferredSize(new Dimension(icon.getIconWidth(), icon.getIconHeight()));
                 JPanel buttonPanel = new JPanel();
                 buttonPanel.setBackground(Color.WHITE);
                 buttonPanel.add(button);
                 JLabel label = new JLabel((String)v.elementAt(i));
                 label.setHorizontalAlignment(SwingConstants.CENTER);
                 panel.add(buttonPanel , BorderLayout.NORTH);
                 panel.add(label, BorderLayout.SOUTH);
                 mainPanel.add(panel);
                 panel.addMouseListener( ml );
                mainPanel.revalidate();
            st.buildGUI(pane);
        } catch (Exception e) {e.printStackTrace();}
...