Java: ColorEditor
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/*
* ColorEditor.java (compiles with releases 1.3 and 1.4) is used by
* TableDialogEditDemo.java.
*/
import javax.swing.AbstractCellEditor;
import javax.swing.table.TableCellEditor;
import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JDialog;
import javax.swing.JTable;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class ColorEditor extends AbstractCellEditor
implements TableCellEditor,
ActionListener {
Color currentColor;
JButton button;
JColorChooser colorChooser;
JDialog dialog;
protected static final String EDIT = "edit";
public ColorEditor() {
//Set up the editor (from the table's point of view),
//which is a button.
//This button brings up the color chooser dialog,
//which is the editor from the user's point of view.
button = new JButton();
button.setActionCommand(EDIT);
button.addActionListener(this);
button.setBorderPainted(false);
//Set up the dialog that the button brings up.
colorChooser = new JColorChooser();
dialog = JColorChooser.createDialog(button,
"Pick a Color",
true, //modal
colorChooser,
this, //OK button handler
null); //no CANCEL button handler
}
/**
* Handles events from the editor button and from
* the dialog's OK button.
*/
public void actionPerformed(ActionEvent e) {
if (EDIT.equals(e.getActionCommand())) {
//The user has clicked the cell, so
//bring up the dialog.
button.setBackground(currentColor);
colorChooser.setColor(currentColor);
dialog.setVisible(true);
//Make the renderer reappear.
fireEditingStopped();
} else { //User pressed dialog's "OK" button.
currentColor = colorChooser.getColor();
}
}
//Implement the one CellEditor method that AbstractCellEditor doesn't.
public Object getCellEditorValue() {
return currentColor;
}
//Implement the one method defined by TableCellEditor.
public Component getTableCellEditorComponent(JTable table,
Object value,
boolean isSelected,
int row,
int column) {
currentColor = (Color)value;
return button;
}
}
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