checkboxlist.java

A static analysis tool to find bugs in Java programs

/*
 * FindBugs - Find Bugs in Java programs
 * Copyright (C) 2006, University of Maryland
 * 
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library 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
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston MA 02111-1307, USA
 */

package edu.umd.cs.findbugs.gui2;

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;

/**
 * A list of JCheckBoxes!  How convenient!
 * 
 * Adapted from: http://www.devx.com/tips/Tip/5342
 * @author Trevor Harmon
 */
@SuppressWarnings("serial")
public class CheckBoxList extends JList
{
	private static Border noFocusBorder = new EmptyBorder(1, 1, 1, 1);

	public CheckBoxList()
	{
		setCellRenderer(new CellRenderer());

		addMouseListener(new MouseAdapter()
		{
			@Override
			public void mousePressed(MouseEvent e)
			{
				int index = locationToIndex(e.getPoint());

				if (index != -1)
				{
					JCheckBox checkbox = (JCheckBox) getModel().getElementAt(index);
					checkbox.setSelected(!checkbox.isSelected());
					repaint();
				}
			}
		});

		setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
	}

	public CheckBoxList(Object[] list)
	{
		this();
		setListData(list);
	}

	@Override
	public void setEnabled(boolean enabled)
	{
		super.setEnabled(enabled);

		for (int i = 0; i < getModel().getSize(); i++)
			((JCheckBox) getModel().getElementAt(i)).setEnabled(enabled);
	}

	protected class CellRenderer implements ListCellRenderer
	{
		public Component getListCellRendererComponent(JList list, Object value,
				int index, boolean isSelected, boolean cellHasFocus)
		{
			JCheckBox checkbox = (JCheckBox) value;
			checkbox.setBackground(isSelected ? getSelectionBackground() : getBackground());
			checkbox.setForeground(isSelected ? getSelectionForeground() : getForeground());
			checkbox.setEnabled(isEnabled());
			checkbox.setFont(getFont());
			checkbox.setFocusPainted(false);
			checkbox.setBorderPainted(true);
			checkbox.setBorder(isSelected ? UIManager.getBorder("List.focusCellHighlightBorder") : noFocusBorder);
			return checkbox;
		}
	}
}