40 lines
1.1 KiB
Java
40 lines
1.1 KiB
Java
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import java.awt.*;
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import java.awt.event.*;
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import javax.swing.*;
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public class Observer implements MouseListener {
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private JLabel prevSelected;
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public void mouseClicked(MouseEvent evenement) {
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JLabel lb = (JLabel)evenement.getSource();
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if (prevSelected != null) {
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prevSelected.setBackground(new Color(255, 255, 255));
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}
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lb.setBackground(new Color(0, 255, 255));
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prevSelected = lb;
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}
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public void mouseEntered(MouseEvent evenement) {
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JLabel lb = (JLabel)evenement.getSource();
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if (lb == prevSelected) {
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lb.setBackground(new Color(0, 255, 255));
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} else {
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lb.setBackground(new Color(200, 200, 200));
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}
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}
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public void mouseExited(MouseEvent evenement) {
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JLabel lb = (JLabel)evenement.getSource();
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if (lb == prevSelected) {
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lb.setBackground(new Color(0, 200, 255));
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} else {
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lb.setBackground(new Color(255, 255, 255));
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}
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}
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public void mousePressed(MouseEvent evenement) {}
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public void mouseReleased(MouseEvent evenement) {}
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}
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