Is there a convenient way to use spinner as an editor in Swing JTable?

Question

I am dealing with numeric data that is often edited up or down to 0.01 * Value_of_variable, so the spinner looks like a good choice compared to a regular text cell.

I looked at DefaultCellEditor, but it will only accept text fields, combo boxes or check boxes.

Is there a convenient way to use a counter?

Answer 1

... 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(); } } 

Answer 2

Here is an example that addresses a question that I commented on on camickr's answer. This is a complete and compiled example. Take what you need and let go of what you are not doing.

 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(); } } } 

Answer 3

Just add DefaultCellEditor and overwrite the getTableCellEditorComponent() method to return JSpinner .

Answer 4

Jason's answer is beautiful. To help others who might be looking for a time and date version, I edited Jason's code. Hope this helps someone as Jason 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(); } } 

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