I deal with numeric data that is often edited up or down by 0.01*Value_of_variable, so a spinner looks like a good choice compared to a usual text cell.
I've looked at DefaultCellEditor but it will only take text fields, combo boxes or check boxes.
Is there a convenient way to use a spinner?
Here's an example that addresses the issue I commented on camickr's answer. This is a complete and compilable example. Take what you need and ditch what you don't.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class JSpinnerInTables {
static String[] columnNames = {
"Name","Value"
};
static Object[][] data = {
{"one",1.0},
{"two",2.0}
};
public static void main( String[] args ) {
JFrame frame = new JFrame();
JTable table = new JTable(data,columnNames);
//table.setSurrendersFocusOnKeystroke(true);
TableColumnModel tcm = table.getColumnModel();
TableColumn tc = tcm.getColumn(1);
tc.setCellEditor(new SpinnerEditor());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(table);
frame.pack();
frame.setVisible(true);
}
public static class SpinnerEditor extends DefaultCellEditor
{
JSpinner spinner;
JSpinner.DefaultEditor editor;
JTextField textField;
boolean valueSet;
// Initializes the spinner.
public SpinnerEditor() {
super(new JTextField());
spinner = new JSpinner();
editor = ((JSpinner.DefaultEditor)spinner.getEditor());
textField = editor.getTextField();
textField.addFocusListener( new FocusListener() {
public void focusGained( FocusEvent fe ) {
System.err.println("Got focus");
//textField.setSelectionStart(0);
//textField.setSelectionEnd(1);
SwingUtilities.invokeLater( new Runnable() {
public void run() {
if ( valueSet ) {
textField.setCaretPosition(1);
}
}
});
}
public void focusLost( FocusEvent fe ) {
}
});
textField.addActionListener( new ActionListener() {
public void actionPerformed( ActionEvent ae ) {
stopCellEditing();
}
});
}
// Prepares the spinner component and returns it.
public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column
) {
if ( !valueSet ) {
spinner.setValue(value);
}
SwingUtilities.invokeLater( new Runnable() {
public void run() {
textField.requestFocus();
}
});
return spinner;
}
public boolean isCellEditable( EventObject eo ) {
System.err.println("isCellEditable");
if ( eo instanceof KeyEvent ) {
KeyEvent ke = (KeyEvent)eo;
System.err.println("key event: "+ke.getKeyChar());
textField.setText(String.valueOf(ke.getKeyChar()));
//textField.select(1,1);
//textField.setCaretPosition(1);
//textField.moveCaretPosition(1);
valueSet = true;
} else {
valueSet = false;
}
return true;
}
// Returns the spinners current value.
public Object getCellEditorValue() {
return spinner.getValue();
}
public boolean stopCellEditing() {
System.err.println("Stopping edit");
try {
editor.commitEdit();
spinner.commitEdit();
} catch ( java.text.ParseException e ) {
JOptionPane.showMessageDialog(null,
"Invalid value, discarding.");
}
return super.stopCellEditing();
}
}
}
Simply extend DefaultCellEditor and overwrite the getTableCellEditorComponent() method to return a JSpinner.
... and overwrite the getCellEditorValue() method:
class SpinnerEditor extends DefaultCellEditor
{
private JSpinner spinner;
public SpinnerEditor()
{
super( new JTextField() );
spinner = new JSpinner(new SpinnerNumberModel(0, 0, 100, 5));
spinner.setBorder( null );
}
public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column)
{
spinner.setValue( value );
return spinner;
}
public Object getCellEditorValue()
{
return spinner.getValue();
}
}
Jason's answer is perfect. To help others that might be looking for a Time and Date version, I've edited Jason's code to suit. Hope it helps someone as Jason's has helped me.
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.table.*;
public class SpinnerInJTable {
static String[] columnNames = {
"Name","Time & Date"
};
static Object[][] data = {
{"Date One",new Date(Long.decode("1397091313404"))},
{"Date Two", new Date(Long.decode("1397001313404"))}
};
public static void main( String[] args ) {
JFrame frame = new JFrame();
JTable table = new JTable(data,columnNames);
//table.setSurrendersFocusOnKeystroke(true);
TableColumnModel tcm = table.getColumnModel();
TableColumn tc = tcm.getColumn(1);
tc.setCellEditor(new SpinnerEditor());
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(table);
frame.pack();
frame.setVisible(true);
}
public static class SpinnerEditor extends DefaultCellEditor
{
JSpinner spinner;
JSpinner.DefaultEditor editor;
JTextField textField;
boolean valueSet;
// Initializes the spinner.
public SpinnerEditor() {
super(new JTextField());
spinner = new JSpinner(new SpinnerDateModel());
editor = ((JSpinner.DateEditor)spinner.getEditor());
textField = editor.getTextField();
textField.addFocusListener( new FocusListener() {
public void focusGained( FocusEvent fe ) {
System.err.println("Got focus");
//textField.setSelectionStart(0);
//textField.setSelectionEnd(1);
SwingUtilities.invokeLater( new Runnable() {
public void run() {
if ( valueSet ) {
textField.setCaretPosition(1);
}
}
});
}
public void focusLost( FocusEvent fe ) {
}
});
textField.addActionListener( new ActionListener() {
public void actionPerformed( ActionEvent ae ) {
stopCellEditing();
}
});
}
// Prepares the spinner component and returns it.
public Component getTableCellEditorComponent(
JTable table, Object value, boolean isSelected, int row, int column
) {
if ( !valueSet ) {
spinner.setValue(value);
}
SwingUtilities.invokeLater( new Runnable() {
public void run() {
textField.requestFocus();
}
});
return spinner;
}
public boolean isCellEditable( EventObject eo ) {
System.err.println("isCellEditable");
if ( eo instanceof KeyEvent ) {
KeyEvent ke = (KeyEvent)eo;
System.err.println("key event: "+ke.getKeyChar());
textField.setText(String.valueOf(ke.getKeyChar()));
//textField.select(1,1);
//textField.setCaretPosition(1);
//textField.moveCaretPosition(1);
valueSet = true;
} else {
valueSet = false;
}
return true;
}
// Returns the spinners current value.
public Object getCellEditorValue() {
return spinner.getValue();
}
public boolean stopCellEditing() {
System.err.println("Stopping edit");
try {
editor.commitEdit();
spinner.commitEdit();
} catch ( java.text.ParseException e ) {
JOptionPane.showMessageDialog(null,
"Invalid value, discarding.");
}
return super.stopCellEditing();
}
}
}
