Panel Slider for java swing
import javax.swing.*;
import javax.swing.border.LineBorder;
import javax.swing.border.TitledBorder;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class JCollapsiblePanel extends JPanel {
private TitledBorder border;
private Dimension visibleSize;
private boolean collapsible;
public JCollapsiblePanel(String title, Color titleCol) {
super();
collapsible = true;
border = new TitledBorder(title);
border.setTitleColor(titleCol);
border.setBorder(new LineBorder(Color.white));
setBorder(border);
// as Titleborder has no access to the Label we fake the size data ;)
final JLabel l = new JLabel(title);
Dimension size = l.getPreferredSize();
addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
if (!collapsible) {
return;
}
Insets i = getBorder().getBorderInsets(JCollapsiblePanel.this);
if (e.getX() < i.left + size.width && e.getY() < i.bottom + size.height) {
if (visibleSize == null || getHeight() > size.height) {
visibleSize = getSize();
}
if (getSize().height < visibleSize.height) {
setMaximumSize(new Dimension(visibleSize.width, 20000));
setMinimumSize(visibleSize);
} else {
setMaximumSize(new Dimension(visibleSize.width, size.height));
}
revalidate();
e.consume();
}
}
});
}
public void setCollapsible(boolean collapsible) {
this.collapsible = collapsible;
}
public void setTitle(String title) {
border.setTitle(title);
}
}