Need a simple Swing code to demonstrate how to add a button in a column of a Jtable using tablecellrenderer and tablecelleditor.
Here a really nice example which adds a JButton
to a cell in JTable
:
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.DefaultCellEditor;
import javax.swing.JButton;
import javax.swing.JCheckBox;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class JButtonTableExample {
public JButtonTableExample() {
JFrame frame = new JFrame("JButtonTable Example");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
DefaultTableModel dm = new DefaultTableModel();
dm.setDataVector(new Object[][]{{"button 1", "foo"},
{"button 2", "bar"}}, new Object[]{"Button", "String"});
JTable table = new JTable(dm);
table.getColumn("Button").setCellRenderer(new ButtonRenderer());
table.getColumn("Button").setCellEditor(new ButtonEditor(new JCheckBox()));
JScrollPane scroll = new JScrollPane(table);
table.setPreferredScrollableViewportSize(table.getPreferredSize());//thanks mKorbel +1 http://stackoverflow.com/questions/10551995/how-to-set-jscrollpane-layout-to-be-the-same-as-jtable
table.getColumnModel().getColumn(0).setPreferredWidth(100);//so buttons will fit and not be shown butto..
frame.add(scroll);
frame.pack();
frame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new JButtonTableExample();
}
});
}
}
class ButtonRenderer extends JButton implements TableCellRenderer {
public ButtonRenderer() {
setOpaque(true);
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
if (isSelected) {
setForeground(table.getSelectionForeground());
setBackground(table.getSelectionBackground());
} else {
setForeground(table.getForeground());
setBackground(UIManager.getColor("Button.background"));
}
setText((value == null) ? "" : value.toString());
return this;
}
}
class ButtonEditor extends DefaultCellEditor {
protected JButton button;
private String label;
private boolean isPushed;
public ButtonEditor(JCheckBox checkBox) {
super(checkBox);
button = new JButton();
button.setOpaque(true);
button.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
fireEditingStopped();
}
});
}
@Override
public Component getTableCellEditorComponent(JTable table, Object value,
boolean isSelected, int row, int column) {
if (isSelected) {
button.setForeground(table.getSelectionForeground());
button.setBackground(table.getSelectionBackground());
} else {
button.setForeground(table.getForeground());
button.setBackground(table.getBackground());
}
label = (value == null) ? "" : value.toString();
button.setText(label);
isPushed = true;
return button;
}
@Override
public Object getCellEditorValue() {
if (isPushed) {
JOptionPane.showMessageDialog(button, label + ": Ouch!");
}
isPushed = false;
return label;
}
@Override
public boolean stopCellEditing() {
isPushed = false;
return super.stopCellEditing();
}
}
References: