JTable fails to close a color chooser Editor dialog box

The JTable oracle tutorial shows an example of an editor to pick a color:
http://download.Oracle.com/javase/tutorial/uiswing/components/table.HTML#editor
In this example, clicking on a "Favorite color" cell displays a modal dialog box displays a color picker. To close this dialog box without selecting a color, we can for example click on the Cancel dialog button or press the ESC key.
But I would like to be able to close the dialog box by simply clicking on another table cell. Y at - it a trick to implement this? (Actually I want this feature for a date picker dialog, but the problem should be the same as for the color picker.)

See you soon,.
André

Or use a shortcut menu. Adapted from the example (probably has a lot to improve):

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.plaf.basic.BasicButtonUI;
import javax.swing.table.*;

public class ColorTable {

  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {

      @Override
      public void run() {
        new ColorTable().makeUI();
      }
    });
  }

  public void makeUI() {
    Color[][] data = {
      {Color.RED, Color.ORANGE},
      {Color.GREEN, Color.YELLOW},
      {Color.BLUE, Color.MAGENTA}
    };
    String[] headings = {"First", "Second"};
    JTable table = new JTable(data, headings);
    table.setDefaultRenderer(Object.class, new ColorTableCellRenderer());
    table.setDefaultEditor(Object.class, new ColorTableCellEditor());

    JFrame frame = new JFrame("Color JTable");
    frame.add(new JScrollPane(table));

    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.setSize(600, 600);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
  }
}

class ColorTableCellRenderer extends DefaultTableCellRenderer {

  @Override
  public Component getTableCellRendererComponent(JTable table, Object value,
          boolean isSelected, boolean hasFocus, int row, int column) {
    super.getTableCellRendererComponent(table, value,
            isSelected, hasFocus, row, column);
    setText(null);
    setBackground((Color) value);
    return this;
  }
}

class ColorTableCellEditor extends AbstractCellEditor implements TableCellEditor,
        ActionListener, ChangeListener {

  private Color value;
  private JButton button = new JButton();
  private JColorChooser colorChooser = new JColorChooser();
  private JPopupMenu popupMenu = new JPopupMenu();
  private JTable table;
  private int row;
  private int column;

  public ColorTableCellEditor() {
    button.setUI(new BasicButtonUI());
    button.addActionListener(this);
    colorChooser.getSelectionModel().addChangeListener(this);
    popupMenu.setLayout(new BorderLayout());
    popupMenu.setPreferredSize(colorChooser.getPreferredSize());
    popupMenu.add(colorChooser);
  }

  @Override
  public void actionPerformed(ActionEvent e) {
    colorChooser.setColor(value);
    Rectangle cellRect = table.getCellRect(row, column, false);
    popupMenu.show(table, cellRect.x, cellRect.y);
  }

  @Override
  public void stateChanged(ChangeEvent e) {
    value = colorChooser.getColor();
    table.setValueAt(value, row, column);
    popupMenu.setVisible(false);
    stopCellEditing();
  }

  @Override
  public Object getCellEditorValue() {
    return value;
  }

  @Override
  public Component getTableCellEditorComponent(JTable table, Object value,
          boolean isSelected, int row, int column) {
    this.table = table;
    this.row = row;
    this.column = column;

    this.value = (Color) value;
    button.setBackground(this.value);
    return button;
  }
}

Tags: Java

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