JCheckBox background color not showing up in Nimbus

[Bill Clar]

I'm displaying a table with several read-only pieces of data, and a checkbox field that toggles the row color. The background color for the checkbox is not toggling correctly.

I put together a SSCCE:

import java.awt.Color;
import java.awt.Component;
import java.util.ArrayList;
import java.util.List;

import javax.swing.*;
import javax.swing.UIManager.LookAndFeelInfo;
import javax.swing.table.TableCellRenderer;


public class TablePanel extends JPanel
{
    private List<ModelBean>         modelList;
    private JTable                  table;

    private Color background = new Color(0x99, 0xCC, 0xFF);
    private Color highlight  = new Color(0x00, 0x33, 0xFF);


    public TablePanel()
    {
        buildScreen();
    }

    public void buildScreen()
    {
        modelList = new ArrayList<ModelBean>();
        modelList.add(new ModelBean("1", "Line One", false));
        modelList.add(new ModelBean("2", "Line Two", true));
        modelList.add(new ModelBean("3", "Line Three", false));


        MyModel model = new MyModel(modelList);

        table = new JTable(model)
        {
            @Override
            public Component prepareRenderer(
                TableCellRenderer renderer, int row, int column)
            {
                Component c = super.prepareRenderer(renderer, row, column);
                ModelBean oBean = modelList.get(row);

                if( oBean.getIsFlagged() )
                    c.setBackground(Color.PINK);
                else
                    c.setBackground(getBackground());

                return c;
            }
        };

        table.setBackground(background);
        table.setShowGrid(true);

        add(table);
    }


    public static void main(String args[])
    {
        try
        {
            for( LookAndFeelInfo info : UIManager.getInstalledLookAndFeels() )
            {
                if( info.getName().equalsIgnoreCase("Nimbus") )
                {
                    UIManager.setLookAndFeel(info.getClassName());
                    break;
                }
            }
        }
        catch (Exception e)
        {
        }


        JFrame frame = new JFrame("SCCSE");
        frame.setSize(400, 300);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new TablePanel());
        frame.setVisible(true);
    }
}



import java.util.List;

import javax.swing.table.AbstractTableModel;

public class MyModel extends AbstractTableModel
{
    private List<ModelBean>     modelList;


    public MyModel(List<ModelBean> list)
    {
        modelList = list;
    }


    @Override
    public Class<?> getColumnClass(int columnIndex)
    {
        if( columnIndex == 2 )
            return Boolean.class;
        else
            return String.class;
    }


    @Override
    public int getColumnCount()
    {
        return 3;
    }


    @Override
    public String getColumnName(int columnIndex)
    {
        switch( columnIndex )
        {
            case 0:  return "Number";
            case 1:  return "Description";
            case 2:  return "Flag?";
        }

        return "Unknown";
    }


    @Override
    public int getRowCount()
    {
        return modelList.size();
    }


    @Override
    public Object getValueAt(int rowIndex, int columnIndex)
    {
        ModelBean bean = modelList.get(rowIndex);

        switch( columnIndex )
        {
            case 0:  return bean.getNumber();
            case 1:  return bean.getDescription();
            case 2:  return bean.getIsFlagged();
        }

        return "Unknown";
    }


    @Override
    public boolean isCellEditable(int rowIndex, int columnIndex)
    {
        // Only the flagged field is editable.
        return (columnIndex == 2);
    }


    @Override
    public void setValueAt(Object value, int rowIndex, int columnIndex)
    {
        if( columnIndex == 2 && value instanceof Boolean )
        {
            ModelBean bean = modelList.get(rowIndex);
            bean.setIsFlagged((Boolean) value);

            fireTableRowsUpdated(rowIndex, rowIndex);
        }
    }
}


public class ModelBean
{
    private String      number;
    private String      description;
    private boolean     isFlagged;


    public ModelBean(String number, String description, boolean isFlagged)
    {
        this.number = number;
        this.description = description;
        this.isFlagged = isFlagged;
    }

    public String getNumber()
    {
        return number;
    }
    public String getDescription()
    {
        return description;
    }

    public void setIsFlagged(boolean value)
    {
        this.isFlagged = value;
    }
    public boolean getIsFlagged()
    {
        return isFlagged;
    }
}

If I comment out the Nimbus look and feel, it works as expected. I googled this problem and found one possible solution on Stack Overflow. Their suggestion is:

It's a bug in the synth-installed renderer, quick hack is to force the rendering checkbox opacity to true:

    ((JComponent) table.getDefaultRenderer(Boolean.class)).setOpaque(true);

I tried using this line and setting the opacity to true, but it renders the background white. I'm using Java 1.7.0_25.

[Bill Clar]

Fixed. I found a solution for a Nimbus specific renderer: https://code.google.com/p/jsparklines/source/browse/trunk/src/main/java/no/uib/jsparklines/extra/NimbusCheckBoxRenderer.java?r=77