Popup menu for JButton (used in JTable)

Question

import java.awt.*;
import java.awt.event.*;
import java.util.EventObject;

import javax.swing.*;
import javax.swing.event.CellEditorListener;
import javax.swing.table.*;

public class TableButtonCell extends JFrame {
    private JPanel topPanel;
    private JTable table;

    public TableButtonCell() {
        setTitle("JButton in JTable");
        setSize(300,150);
        topPanel = new JPanel();
        topPanel.setLayout(new BorderLayout());
        getContentPane().add(topPanel);
        String [] columns = new String[] {"Text", "Button"};

        String[][] data = new String[][]{
                            {"Line 1", ""},
                            {"Line 2", ""},
                            {"Line 3", ""}};

        DefaultTableModel model = new DefaultTableModel(data,columns);
        table = new JTable();
        table.setModel(model);
        table.getColumn("Button").setCellRenderer(new ButtonRenderer());
        table.getColumn("Button").setCellEditor(new ButtonEditor());
        JScrollPane scrollPane = new JScrollPane(table);
        topPanel.add(scrollPane,BorderLayout.CENTER);
        setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    class ButtonRenderer extends JButton implements TableCellRenderer {
        public ButtonRenderer() {
            setOpaque(true);
        }

        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            setText((value == null) ? "Modify" : value.toString());
            return this;
        }
    }

    class ButtonEditor extends JButton implements TableCellEditor {
        public ButtonEditor() {
            JPopupMenu popup = new JPopupMenu();

            JMenuItem item = new JMenuItem("Menu action 1");
            item.addActionListener(this::menuAction);

            item = new JMenuItem("Menu action 2");
            item.addActionListener(this::menuAction);

            setComponentPopupMenu(popup);

            addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent event) {
                    JOptionPane.showMessageDialog(null,"JButton clicked");
                }
            });
        }

        public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)  {            
            return this;
        }

        public Object getCellEditorValue()  {
            return null;
        }

        public void menuAction(ActionEvent ev) {
            JOptionPane.showMessageDialog(null,"JButton clicked");
        }

        @Override
        public boolean isCellEditable(EventObject anEvent) {
            return true;
        }

        @Override
        public boolean shouldSelectCell(EventObject anEvent) {
            // TODO Auto-generated method stub
            return false;
        }

        @Override
        public boolean stopCellEditing() {
            return true;
        }

        @Override
        public void cancelCellEditing() {
        }

        @Override
        public void addCellEditorListener(CellEditorListener l) {
        }

        @Override
        public void removeCellEditorListener(CellEditorListener l) {
        }
    }

    public static void main(String args[]) {
        TableButtonCell f = new TableButtonCell();
        f.setVisible(true);
    }
}

The SSCE above creates a JTable with JButton as cell renderer/editor. It's working fine & button action is triggered correclty

When trying to add a popup menu to the JButton, the menu is not shown when clicking mouse right button.

Looks like the table is consuming the Mouse right click event, so the JButton didn't receive & react to the event ?

Any clue ?

Thanks in advance for any guidance/help

Answer 1

Now it's working with the following code. Hope this may help some one else.

import java.awt.*;
import java.awt.event.*;
import java.util.EventObject;

import javax.swing.*;
import javax.swing.event.CellEditorListener;
import javax.swing.table.*;

public class TableButtonCell extends JFrame {
    private JPanel topPanel;
    private JTable table;

    public TableButtonCell() {
        setTitle("JButton in JTable");
        setSize(300,150);
        topPanel = new JPanel();
        topPanel.setLayout(new BorderLayout());
        getContentPane().add(topPanel);
        String [] columns = new String[] {"Text", "Button"};

        String[][] data = new String[][]{
            {"Line 1", "Button 1"},
            {"Line 2", "Button 2"},
            {"Line 3", "Button 3"},
            {"Line 4", "Button 4"}};

            DefaultTableModel model = new DefaultTableModel(data,columns);
            table = new JTable();
            table.setModel(model);

            ButtonRendererEditor renderer = new ButtonRendererEditor(table, 1);
            TableColumn tc = table.getColumn("Button");
            tc.setCellRenderer(renderer);
            tc.setCellEditor(renderer);

            JScrollPane scrollPane = new JScrollPane(table);
            topPanel.add(scrollPane,BorderLayout.CENTER);
            setDefaultCloseOperation(EXIT_ON_CLOSE);
    }

    class ButtonRendererEditor extends JButton implements TableCellRenderer, TableCellEditor {
        int column;

        public ButtonRendererEditor(JTable table, int column) {
            this.column = column;

            JPopupMenu popup = new JPopupMenu();
            JMenuItem item = new JMenuItem("Menu action 1");
            item.addActionListener(this::menuAction);
            popup.add(item);

            item = new JMenuItem("Menu action 2");
            item.addActionListener(this::menuAction);
            popup.add(item);

            addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent event) {
                    JOptionPane.showMessageDialog(null,"JButton clicked");
                }
            });

            table.addMouseListener( new MouseAdapter() {
                public void mousePressed(MouseEvent e) {
                }

                public void mouseReleased(MouseEvent e) {
                     if (!e.isPopupTrigger())
                         return;

                     JTable source = (JTable)e.getSource();
                     int col = source.columnAtPoint(e.getPoint());
                     if (col != column)
                         return;

                     popup.show(e.getComponent(), e.getX(), e.getY());
                }
            });
        }

        public void menuAction(ActionEvent ev) {
            JOptionPane.showMessageDialog(null,"Menu item clicked");
        }

        public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
            setText((value == null) ? "" : value.toString());
            return this;
        }

        public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column)  {            
            setText((value == null) ? "" : value.toString());
            return this;
        }

        public Object getCellEditorValue()  {
            return null;
        }

        @Override
        public boolean isCellEditable(EventObject anEvent) {
            return true;
        }

        @Override
        public boolean shouldSelectCell(EventObject anEvent) {
            return true;
        }

        @Override
        public boolean stopCellEditing() {
            return true;
        }

        @Override
        public void cancelCellEditing() {
        }

        @Override
        public void addCellEditorListener(CellEditorListener l) {           
        }

        @Override
        public void removeCellEditorListener(CellEditorListener l) {
        }
    }

    public static void main(String args[]) {
        TableButtonCell f = new TableButtonCell();
        f.setVisible(true);
    }
}