JPopupMenu en JList no se muestra

[j4v1]

Hola de nuevo

Estoy tratando de mostrar un menu al hacer click a los elementos de una lista, pero no lo consigo, creo que estoy haciendo algo mal

Pasteo el código para que lo veáis

Código:

import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;

import javax.swing.JFrame;
import javax.swing.JList;
import javax.swing.JMenuItem;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;

public class MainClass {

private static JPopupMenu popup;
  
public static void main(final String args[]) {
    final String labels[] = { "A", "B", "C", "D", "E" };
    JFrame frame = new JFrame("JList");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

    JList jlist = new JList(labels);
    JScrollPane scrollPane1 = new JScrollPane(jlist);
    frame.add(scrollPane1);
    
    popup = new JPopupMenu();
    popup.add(new JMenuItem("uno"));
    popup.add(new JMenuItem("dos"));

    
    
    MouseListener mouseListener = new MouseAdapter() {

      
    	public void mousePressed(MouseEvent mouseEvent) {
      	  JList theList = (JList) mouseEvent.getSource(); 
      	  int index = theList.locationToIndex(mouseEvent.getPoint());
            if (index >= 0) {
              Object o = theList.getModel().getElementAt(index);
              if (mouseEvent.isPopupTrigger()) { 
                  popup.show(mouseEvent.getComponent(),
                		  mouseEvent.getX(), mouseEvent.getY());
              }
            }
        }

    };
    jlist.addMouseListener(mouseListener);

    frame.setSize(350, 200);
    frame.setVisible(true);
  }
}

Un saludo y gracias de antemano

[j4v1]

Al final después de un descanso para despejar la mente, y leyendo y leyendo mucho, lo conseguí.

Si algúno sabe de algo que este mal, porfavor, decirlo

Código:

import java.awt.Component;
import java.awt.EventQueue;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.util.ArrayList;
import java.util.List;

import javax.swing.JFrame;
import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.ListSelectionModel;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;


public class AllTableExample {

	private JPopupMenu popup;
    private JTabbedPane tabbedPane;
    private JTable allTable;
    private AllTableModel allTableModel;
	private List<TableData> data;
	static int selected = -1;
	private JFrame frame;
    public AllTableExample() {

        data = new ArrayList<TableData>();
        data.add(new TableData("test1"));
        data.add(new TableData("test2"));
        data.add(new TableData("test3"));
        data.add(new TableData("test4"));
        data.add(new TableData("test5"));

        allTableModel = new AllTableModel(data);
        
    }

    public void createUI() {
        frame = new JFrame();

        tabbedPane = new JTabbedPane();
        popup = new JPopupMenu();
        tabbedPane.add("All", getAllTablePanel());
        JMenuItem delete = new JMenuItem("Delete");
        popup.add(delete);
        delete.addActionListener(new ActionListener() 
        {
            @Override
            public void actionPerformed(ActionEvent e) {
            	int del = allTable.getSelectedRow();
            	data.remove(del);
            	frame.repaint();
                JOptionPane.showMessageDialog((Component) frame, del);
            }

        });
        
        frame.add(tabbedPane);	
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setTitle("Table Model Example.");
        frame.pack();
        frame.setVisible(true);
    }
    
    

    
    private void mostrarPopupMenu(MouseEvent e) {
        
        if (e.isPopupTrigger()) { 
            popup.show(e.getComponent(),
                       e.getX(), e.getY());
        }

    }
    


    private JPanel getAllTablePanel() {
        JPanel panel = new JPanel();
        allTable = new JTable(allTableModel);
        JScrollPane scroll = new JScrollPane(allTable);
        panel.add(scroll);
        
        allTable.addMouseListener(new MouseAdapter() {
            @Override
            public void mouseReleased(MouseEvent e) {
            	
            	if ( SwingUtilities.isLeftMouseButton( e ) )
        		{
        			selected = allTable.getSelectedRow();
        		}

        		else if ( SwingUtilities.isRightMouseButton( e ))
        		{

            		Point p = e.getPoint();

    			int rowNumber = allTable.rowAtPoint( p ); 
    			 ListSelectionModel model = allTable.getSelectionModel();
    			 model.setSelectionInterval( rowNumber, rowNumber );
            		selected = rowNumber;
            		frame.repaint();
            		mostrarPopupMenu(e);

        		}

            }


            });

        return panel;
    }
    
    

    public static void main(String[] args) {
        Runnable r = new Runnable() {

            @Override
            public void run() {
                new AllTableExample().createUI();
            }
        };

        EventQueue.invokeLater(r);
    }

}


class AllTableModel extends AbstractTableModel {

    List<TableData> tableData = new ArrayList<TableData>();

    Object[] columnNames = {"Name"};

    public AllTableModel(List<TableData> data) {

        tableData = data;
    }

    public List<TableData> getTableData() {
        return tableData;
    }

    @Override
    public String getColumnName(int column) {
        return columnNames[column].toString();
    }

    
    public int getColumnCount() {
        return columnNames.length;
    }

    @Override
    public int getRowCount() {
        return tableData.size();
    }

    @Override
    public Object getValueAt(int rowIndex, int columnIndex) {
        TableData data = tableData.get(rowIndex);

            return data.getName();
        
        }
    }




class TableData {

    private String name;


    public TableData(String name) {
        super();
        this.name = name;

    }

    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }
    
}

[j4v1]

He notado que cuando vas borrando, donde había una linea aun se puede hacer click y muestra el desplegable y al darle a Delete peta (lógico porque no hay nada)

si se ha borrado la linea, como se puede deshabilitar el que salga el desplegable donde ya no hay nada?