ColorCellEditor


1   package snow.sortabletable;
2   
3   import java.util.*;
4   import java.awt.*;
5   import java.awt.color.*;
6   import java.awt.event.*;
7   import javax.swing.*;
8   import javax.swing.event.*;
9   import javax.swing.table.*;
10  
11  
12  public final class ColorCellEditor extends AbstractCellEditor
13                           implements TableCellEditor,
14                                      ActionListener {
15      Color currentColor;
16      JButton button;
17      JColorChooser colorChooser;
18      JDialog dialog;
19      protected static final String   EDIT = "edit";
20  
21      public ColorCellEditor() {
22          button = new JButton();
23          button.setActionCommand(EDIT);
24          button.addActionListener(this);
25          button.setBorderPainted(false);
26  
27          //Set up the dialog that the button brings up.
28          colorChooser = new JColorChooser();
29          dialog = JColorChooser.createDialog(button,
30                                          "Pick a Color",
31                                          true,  //modal
32                                          colorChooser,
33                                          this,  //OK button handler
34                                          null); //no CANCEL button handler
35      }
36  
37      public void actionPerformed(ActionEvent e) {
38          if (EDIT.equals(e.getActionCommand())) {
39              //The user has clicked the cell, so
40              //bring up the dialog.
41              button.setBackground(currentColor);
42              colorChooser.setColor(currentColor);
43              dialog.setVisible(true);
44  
45              fireEditingStopped(); //Make the renderer reappear.
46  
47          } else { //User pressed dialog's "OK" button.
48              currentColor = colorChooser.getColor();
49          }
50      }
51  
52      //Implement the one CellEditor method that AbstractCellEditor doesn't.
53      public Object   getCellEditorValue() {
54          return currentColor;
55      }
56  
57      //Implement the one method defined by TableCellEditor.
58      public Component getTableCellEditorComponent(JTable table,
59                                                   Object   value,
60                                                   boolean isSelected,
61                                                   int row,
62                                                   int column)
63      {
64          if(value instanceof Color)
65          {
66            currentColor = (Color) value;
67          }
68          return button;
69      }
70  }
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