Question

I’m puzzled with a strange mouse listener behavior.

First, I defined an interface :

public interface GeniusField {

    public void setEdited(Boolean b);

    public void addMouseListeners();
    public void addKeyListeners();

    public String getStringValue();
}

then, I implement this interface :

public class GeniusComboField extends JComboBox implements GeniusField {

    public GeniusComboField() {

        super();

        //blabla

        addMouseListeners();
        addKeyListeners();

    }

    @Override
    public void addMouseListeners() {
        System.out.println("ADD LISTENTER");

        this.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                System.out.println("mouse mouse");
            }
        });
    }
}

And for some reason, nothing is triggered when I click on my combobox (but I get the “ADD LISTENER” output).

I don’t see what is happening.

Can someone help?

Answer 1

In Java Swing JComboBox don’t receive the mouse events. It’s the components within that do it. Try something like:

for (int i=0; i<this.getComponentCount(); i++) {
    this.getComponent(i).addMouseListener(this);
}

Then make your class implements MouseListener.

Or you can override the method to add object to your combobox and call your addMouseListener() method. Like that each object will have a listener.