Java Swing: JList with ListCellRenderer selected item different height

Question

I\'m making a custom ListCellRenderer. I know that you can have different dimensions for each individual cell. But now I want to have a different dimension for the selected

Answer 1

this is a simple solution:

public class VariableHeightListUI extends BasicListUI {

  @Override
  public void paint(Graphics g, JComponent c) {
    updateLayoutState();
    super.paint(g, c); 
  }
}

of course you need write your own implementation of ListCellRenderer, and according to different selection state of list element, you can set different prefer height of returned Component.

Only one issue need to go on is : when you select an element of List FIRST time, not draw correctly. but after then, all work well.

hope this can help you.