ColorEditor.java

/***
 * Copyright (c) 2008, Endless Loop Software, Inc.
 * 
 * This file is part of EgoNet.
 * 
 * EgoNet is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 * 
 * EgoNet is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 * 
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.egonet.gui.table;

import javax.swing.JColorChooser;
import javax.swing.AbstractCellEditor;
import javax.swing.table.TableCellEditor;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JTable;
import java.awt.Component;
import java.awt.Color;
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;
	}
}