mouse listing over JPanels

[willemjav]

Is this going to work?
I created a 100 jpanels covered with jlabels. and registered a mouselistener,
I'd like to read out on which jpanel I'd double clicked....
Is this going to work?
I might need a glasspane?
Any suggestions welcome:

 public JPanel CreatePanels() {

        int arraycount= 0;          // panel CENTER
        roomPanel = new JPanel();
        roomPanel.setLayout(new GridLayout(10,10));
        JPanel rp;
        for (int i = 3; i <6; i++) {
            for (int ii = 0; ii <=29; ii++) {
                int room = (i*100)+ii;
                rp = singleroompanel.CreateSingleRoomPanel(new JPanel(), room);

                roominfopanel[arraycount].setRoomNumber(room);
                roominfopanel[arraycount].setPanelRef(rp);

                if (roominfopanel[arraycount].getPianoRoom());
                arraycount++;
                rp.addMouseListener(Mhandler);
                roomPanel.add(rp);
            }
        }
        // set panel text
        return roomPanel;
     }

[willemjav]

This is not working. The class which contains the method extends JFrame.
When registering the listener with the frame I get mouse readings alright,
but than I can not see on which of the 100 panels I am clicking....

[DarrylBurke]

One way: create a class that extends MouseAdapter and has a (probably final) int field to represent 'room' that is initialized from a constructor parameter. Construct and add this listener to each JPanel.

db

[willemjav]

db here is what I did:
1) I set up a inner class that implements the MouseListener,
planing on using the mouseEntered method:

public class MouseHandler implements MouseListener {
        public void mousePressed(MouseEvent e) {
                System.out.println(" mouse pressed at " + e);
                 //   e.getClickCount()
        }

        public void mouseReleased(MouseEvent e) {

        }

        public void mouseEntered(MouseEvent e) {
           System.out.println(" mouse entered at " + e);
           System.out.println(e.getSource().getClass());
        }

        public void mouseExited(MouseEvent e) {

        }

        public void mouseClicked(MouseEvent e) {

        }


   }

2) than I'll register each room panel (JPanel) with the created listener object
called Mhandler:

public JPanel CreatePanels() {

        int arraycount= 0;          // panel CENTER
        roomPanel = new JPanel();
        roomPanel.setLayout(new GridLayout(10,10));
        
        for (int i = 3; i <6; i++) {
            for (int ii = 0; ii <=29; ii++) {
                int room = (i*100)+ii;
                
                rp = singleroompanel.CreateSingleRoomPanel(new JPanel(), room);

                roominfopanel[arraycount].setRoomNumber(room);
                roominfopanel[arraycount].setPanelRef(rp);

                if (roominfopanel[arraycount].getPianoRoom());
                
                rp.addMouseListener(Mhandler);
                roomPanel.add(rp);
                arraycount++;
            }
        }
        
        return roomPanel;
     }

3) But the point is I do not get any mousereadings, maybe the problems lays
in the setup of the panels, or maybe the panels are to populated and
covering the sureface?

class DeskMonitor extends JFrame{
    private JPanel panel, roomPanel, infopanel, rp;;
    private JLabel label, infolabel;
    private final static int MAXROOM = 90;
    private RoomInfoPanel[] roominfopanel;
    private SingleRoomPanel singleroompanel;
    private ImageIcon icon1, icon2;
    private MouseHandler Mhandler;

    public DeskMonitor()  {
      
      roominfopanel = new RoomInfoPanel[MAXROOM]; // initialize the
      for (int i = 0; i < roominfopanel.length; i++) { // roominfopanrl array
          roominfopanel[i] = new RoomInfoPanel();
      }

      icon1 = createImageIcon("images/keyboard.gif");
      icon2 = createImageIcon("images/lic2.gif");

      setTitle("Principle Desk Monitor");
      setSize(1600, 900);
      panel = new JPanel(new BorderLayout());
      // object which constructs ind room panels
      singleroompanel = new SingleRoomPanel();


      panel.add(CreatePanels(), BorderLayout.CENTER);
      panel.add(createTopInfoPanel(), BorderLayout.NORTH);

      Mhandler = new MouseHandler();
      
      Container contentPane = getContentPane();
      contentPane.add(panel);
     // myGlassPane.setVisible(true);
    }

[willemjav]

I'd first like to understand what is going on:
1) the class extends JFrame
2) the principle panel that covers the JFrame is called "panel'
and is added to the contentPane of the Container (Parent of JFrame)
3) The 100 room panels that register the mouse listener are added to "panel"
So I believe this should work, right?...... wrong it does not!

(actually "roompanel" (whixh has a gridlayout of 10 by 10 holds the room panels
and is added to panel (borderlayout center))

[willemjav]

The roompanel is totally covered with many JLabels!
Maybe that causes the mouse not the fire?
I could call the glassPane of each room panel,right?
But probably I missing some other "tiny detail" again?

[willemjav]

So when I say panel.addMouseListener(Mhandler); in the constructor
I get readings!

[willemjav]

But When I say roomPanel.addMouseListener(Mhandler); in the CreatePanels()
I get ZIP, wow why is that, I do not get this!

 public JPanel CreatePanels() {

        int arraycount= 0;          // panel CENTER
        roomPanel = new JPanel();
        roomPanel.setLayout(new GridLayout(10,10));
        roomPanel.addMouseListener(Mhandler);

[willemjav]

And I am not even yet to the level of the 100 small JPanels I'd like to register!

[DarrylBurke]

That's what I recommended at #3. I also recommended that you extend MouseAdapter which will allow you to reduce the clutter of empty methods.

db

[willemjav]

Ok I found the problem I created the mousehandler to late in the constructor
It should be created before adding it, again a stupid mistake.....
thread closed!

[willemjav]

(do please not losse faith in my db)

[willemjav]

Wait db, I am still here, what could one do to see which JPanel of 100 is entered by the mouse
(I do have the ref of each panel in a array)

public void mouseEntered(MouseEvent e) {
System.out.println(" mouse entered at " + e);
System.out.println(e.getSource().getClass());
}

[willemjav]

Found it db:
if (e.getSource() == roominfopanel[3].getPanelRef())
System.out.println(" bingo ");