resizing component in jtable cell - resize

Question

I am trying to resize a slider inside a jtable cell. But when resizing the column header, I do pass in the concerned code (method getTableCellRendererComponent for column one), but nothing happens (the slider is not resized??).
below is the code of my renderer :
public class NavigationDataModelRenderer extends JLabel implements TableCellRenderer {
private JSlider slider = null;
public NavigationDataModelRenderer()
{
super();
}
public NavigationDataModelRenderer(int tolerance)
{
super();
slider = new JSlider(tolerance * -3,tolerance *3);
slider.setPaintTicks(true);
slider.setMajorTickSpacing(tolerance);
slider.setUI(new SpreadSliderUI(slider));
}
#Override
public Component getTableCellRendererComponent(JTable table, Object value,boolean isSelected, boolean hasFocus, int row, int column)
{
Component comp = null;
if (table.getModel()!= null && table.getModel() instanceof NavigationDataModel)
{
NavigationDataModel model = (NavigationDataModel) table.getModel();
Object o = table.getModel().getValueAt(row, column);
this.setText(o.toString());
if (column == 1)
{//slider
if (model.getList() != null && model.getList().get(0)!= null && model.getList().get(row) != null)
{
slider.setValue((Integer)o);
}
comp = slider;
slider.setSize(table.getCellRect(row, column, false).getSize());
}
else if (column == 2)
{
if (((Integer)o) == Integer.MAX_VALUE)
{
this.setText("Invalid");
}
}
else
{
comp = this;
}
}
return comp;
}
}
thanks for your help.

Answer 1

I encounter this problem because I use a BasicSliderUI for my slider. Now in my renderer, I set a new BasicSliderUI for my slider each time I enter getTableCellRendererComponent(...) and the slider is resized.

Answer 2

public class GrowingCellRenderer extends DefaultTableCellRenderer
{
#Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
int row, int column)
{
Component renderer = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
//renderer.setBackground(Color.red);
renderer.setSize(getMinimumSize());
table.setRowHeight(row, renderer.getHeight());
return renderer;
}
}
public static void main(String[] args)
{
GrowingCellRenderer testInstance = new GrowingCellRenderer();
final Date dateProjectStart = new Date(); //Start the "project" today
final JTable jtab = new JTable(TableTools.createTestData(dateProjectStart));
jtab.setDefaultRenderer(String.class, testInstance);
}