Java by API/javax.swing/JLayeredPane

JLayeredPane: add(Component comp, Object constraints)

 

import java.awt.Color;
import javax.swing.JButton;
import javax.swing.JFrame;
public class Main extends JFrame {
  public Main() {
    super("");
    setSize(570, 400);
    getContentPane().setBackground(new Color(244, 232, 152));
    getLayeredPane().setOpaque(true);
    JButton[] frames = new JButton[5];
    for (int i = 0; i < 5; i++) {
      frames[i] = new JButton("InnerFrame " + i);
      frames[i].setBounds(50 + i * 20, 50 + i * 20, 200, 200);
      getLayeredPane().add(frames[i]);
    }
    super.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setVisible(true);
  }
  public static void main(String[] args) {
    new Main();
  }
}

JLayeredPane.DEFAULT_LAYER

 
import java.awt.BorderLayout;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
public class MainClass {
  public static void main(String args[]) {
    JFrame f = new JFrame("Sample");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JLayeredPane desktop = new JDesktopPane();
    desktop.setOpaque(false);
    desktop.add(new SelfInternalFrame("1"), JLayeredPane.POPUP_LAYER);
    desktop.add(new SelfInternalFrame("2"), JLayeredPane.DEFAULT_LAYER);
    desktop.add(new SelfInternalFrame("3"), JLayeredPane.PALETTE_LAYER);    
    
    f.add(desktop, BorderLayout.CENTER);
    f.setSize(300, 200);
    f.setVisible(true);
  }
}
class SelfInternalFrame extends JInternalFrame {
  public SelfInternalFrame(String s) {
    getContentPane().add(new JLabel(s), BorderLayout.CENTER);
    setBounds(50, 50, 100, 100);
    setResizable(true);
    setClosable(true);
    setMaximizable(true);
    setIconifiable(true);
    setTitle(s);
    setVisible(true);
  }
}

JLayeredPane: getAccessibleContext()

 
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.accessibility.AccessibleContext;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainClass extends JFrame implements ActionListener {
  JButton jb;
  MainClass(String title) {
    super(title);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    AccessibleContext ac = getAccessibleContext();
    ac.setAccessibleDescription("Accessibility Demo1 description.");
    ac = getRootPane().getAccessibleContext();
    ac.setAccessibleName("Root pane");
    ac.setAccessibleDescription("Root pane description");
    ac = getGlassPane().getAccessibleContext();
    ac.setAccessibleName("Glass pane");
    ac.setAccessibleDescription("Glass pane description");
    ac = getLayeredPane().getAccessibleContext();
    ac.setAccessibleName("Layered pane");
    ac.setAccessibleDescription("Layered pane description");
    ac = getContentPane().getAccessibleContext();
    ac.setAccessibleName("Content pane");
    ac.setAccessibleDescription("Content pane description");
    JPanel p = new JPanel();
    ac = p.getAccessibleContext();
    ac.setAccessibleName("Panel");
    ac.setAccessibleDescription("Panel description");
    jb = new JButton("Press Me");
    jb.addActionListener(this);
    jb.setToolTipText("Press me for accessibility information.");
    p.add(jb);
    getContentPane().add(p);
    setSize(200, 75);
    setVisible(true);
  }
  public void actionPerformed(ActionEvent e) {
    dumpInfo(getAccessibleContext());
  }
  void dumpInfo(AccessibleContext ac) {
    System.out.println("Name = " + ac.getAccessibleName());
    System.out.println("Description = " + ac.getAccessibleDescription());
    int nChildren = ac.getAccessibleChildrenCount();
    for (int i = 0; i < nChildren; i++)
      dumpInfo(ac.getAccessibleChild(i).getAccessibleContext());
  }
  public static void main(String[] args) {
    new MainClass("Accessibility Demo1");
  }
}

JLayeredPane.PALETTE_LAYER

 
import java.awt.BorderLayout;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
public class MainClass {
  public static void main(String args[]) {
    JFrame f = new JFrame("Sample");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JLayeredPane desktop = new JDesktopPane();
    desktop.setOpaque(false);
    desktop.add(new SelfInternalFrame("1"), JLayeredPane.POPUP_LAYER);
    desktop.add(new SelfInternalFrame("2"), JLayeredPane.DEFAULT_LAYER);
    desktop.add(new SelfInternalFrame("3"), JLayeredPane.PALETTE_LAYER);    
    
    f.add(desktop, BorderLayout.CENTER);
    f.setSize(300, 200);
    f.setVisible(true);
  }
}
class SelfInternalFrame extends JInternalFrame {
  public SelfInternalFrame(String s) {
    getContentPane().add(new JLabel(s), BorderLayout.CENTER);
    setBounds(50, 50, 100, 100);
    setResizable(true);
    setClosable(true);
    setMaximizable(true);
    setIconifiable(true);
    setTitle(s);
    setVisible(true);
  }
}

JLayeredPane.POPUP_LAYER

 
import java.awt.BorderLayout;
import javax.swing.JDesktopPane;
import javax.swing.JFrame;
import javax.swing.JInternalFrame;
import javax.swing.JLabel;
import javax.swing.JLayeredPane;
public class MainClass {
  public static void main(String args[]) {
    JFrame f = new JFrame("Sample");
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JLayeredPane desktop = new JDesktopPane();
    desktop.setOpaque(false);
    desktop.add(new SelfInternalFrame("1"), JLayeredPane.POPUP_LAYER);
    f.add(desktop, BorderLayout.CENTER);
    f.setSize(300, 200);
    f.setVisible(true);
  }
}
class SelfInternalFrame extends JInternalFrame {
  public SelfInternalFrame(String s) {
    getContentPane().add(new JLabel(s), BorderLayout.CENTER);
    setBounds(50, 50, 100, 100);
    setResizable(true);
    setClosable(true);
    setMaximizable(true);
    setIconifiable(true);
    setTitle(s);
    setVisible(true);
  }
}