How to make a JPanel highlighted on mouseclick

[aneesahamedaa]

Hi all,
I have a main JPanel and 3 sub JPanels.
sub JPanels are added to main JPanel.
How can I highlight each of these sub JPanels on clicking on each of them.
I need to have multiple select- deselect mode.
Just the same working, like when we select deselect files/folders(CTRL+mouseclick).

import java.awt.Color;
import java.awt.Dimension;

import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
 
public class Trial {
	public static void main(String[] args) {
		JLabel label = new JLabel();
		label.setText("fffffffff");
		label.setBounds(5, 5, 25, 25);
		
		JLabel label2 = new JLabel();
		label2.setText("HHHHHHHHHH");
		label2.setBounds(25, 25, 25, 25);
		
		JLabel label3 = new JLabel();
		label3.setText("YYYYYYYY");
		label3.setBounds(50, 50, 25, 25);
		
		
		JPanel mainPanel = new JPanel();
		mainPanel.setSize(new Dimension(300,300));
		JPanel panel1 = new JPanel();
		panel1.add(label);
		JPanel panel2 = new JPanel();
		panel2.add(label2);
		JPanel panel3 = new JPanel();
		panel3.add(label3);
		
		panel1.setBackground(Color.WHITE);
		panel2.setBackground(Color.MAGENTA);
		panel3.setBackground(Color.orange);
		
		mainPanel.add(panel1);
		mainPanel.add(panel2);
		mainPanel.add(panel3);
		
		JFrame frame = new JFrame("Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(mainPanel);
        frame.pack();
        frame.setVisible(true);
	}
}

Rony

[Eranga]

Use mouseMoved in mouseLictener

[Fubarable]

cross-posted in the Sun Java forums: Swing - How to make a JPanel highlighted on mouseclick

[hardwired]

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.border.Border;

public class TrialRx {
    Border emptyBorder  = BorderFactory.createEmptyBorder(1,1,1,1);
    Border selectBorder = BorderFactory.createLineBorder(Color.blue);
    JPanel[] panels;

    private JPanel getContent() {
        JLabel label = new JLabel();
        label.setText("fffffffff");
        label.setBounds(5, 5, 25, 25);

        JLabel label2 = new JLabel();
        label2.setText("HHHHHHHHHH");
        label2.setBounds(25, 25, 25, 25);

        JLabel label3 = new JLabel();
        label3.setText("YYYYYYYY");
        label3.setBounds(50, 50, 25, 25);

        JPanel mainPanel = new JPanel();
        mainPanel.addMouseMotionListener(mml);
        mainPanel.setSize(new Dimension(300,300));
        JPanel panel1 = new JPanel();
        panel1.add(label);
        JPanel panel2 = new JPanel();
        panel2.add(label2);
        JPanel panel3 = new JPanel();
        panel3.add(label3);

        panel1.setBackground(Color.WHITE);
        panel2.setBackground(Color.MAGENTA);
        panel3.setBackground(Color.orange);

        panel1.setBorder(emptyBorder);
        panel2.setBorder(emptyBorder);
        panel3.setBorder(emptyBorder);

        panels = new JPanel[] { panel1, panel2, panel3 };

        mainPanel.add(panel1);
        mainPanel.add(panel2);
        mainPanel.add(panel3);
        return mainPanel;
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame("Test");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new TrialRx().getContent());
        frame.pack();
        frame.setVisible(true);
    }

    private MouseMotionListener mml = new MouseMotionAdapter() {
        int selectedIndex = -1;

        public void mouseMoved(MouseEvent e) {
            Point p = e.getPoint();
            boolean hover = false;
            for(int i = 0; i < panels.length; i++) {
                if(panels[i].getBounds().contains(p)) {
                    hover = true;
                    if(i != selectedIndex) {
                        panels[i].setBorder(selectBorder);
                        if(selectedIndex != -1) {
                            panels[selectedIndex].setBorder(emptyBorder);
                        }
                        selectedIndex = i;
                    }
                    break;
                }
            }
            if(!hover && selectedIndex != -1) {
                panels[selectedIndex].setBorder(emptyBorder);
                selectedIndex = -1;
            }
        }
    };
}