i'm using a JSpinner like a table cell editor, i have one annoying problem:
The cell remains in NON-editable mode until i click into it, for NON-editable i mean that i can't write into it(it has not focus so it doesn't accept inputs keyboard) but i can change the value with up-down arrows(of keyboard).
So, what i have to do to focus my table cell as soon as i press a key when it is selected?
Except for that problem my SpinnerEditor class works quite well.
Thanks all.
Here's a complete example. It does more than just put the JSpinner in the table, so you can read it and take what you need. I found the answer by Blow to be incomplete and it didn't work for me, so here's something you can compile and run.
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();
}
}
}
Ok, my solution now is this:
spinner.addFocusListener(new FocusListener() {
public void focusGained(FocusEvent e) {
// editor is ((JSpinner.DefaultEditor)spinner.getEditor()).getTextField();
// necessary to set focus on the text component of jspinner
editor.requestFocus();
// this if you want to select the displayed text of jspinner
SwingUtilities.invokeLater(new Runnable() {
public void run() {
System.out.println("run");
editor.selectAll();
}
});
}
public void focusLost(FocusEvent e) {}
});
来源:https://stackoverflow.com/questions/3736993/use-jspinner-like-jtable-cell-editor