Set inactive background color on JTextField per-component under Windows LAF

Question

I want to set the inactive background color of a JTextField on a per-component basis. (The inactive colors are shown when calling setEditable(false)).

Calling
UIManager.put("TextField.inactiveBackground", new ColorUIResource(Color.YELLOW));
sets the inactive color application-wide.

It can be done under Nimbus LAF like documented here: http://docs.oracle.com/javase/7/docs/api/javax/swing/plaf/nimbus/package-summary.html. Can a similar thing be done when using Windows LAF?

Answer 1

I found a solution. Not really a beautiful solution, but a solution nonetheless:

Extend the JTextField class and override the paintComponent method to draw a rectangle in the desired color.

class CustomTextField extends JTextField {
  private Color inactiveColor = UIManager.getColor("TextField.inactiveBackground");

  public void setDisabledBackgroundColor(Color inactiveColor) {
    this.inactiveColor = inactiveColor;
    repaint();
  }

  @Override
  protected void paintComponent(Graphics g) {
    if (!isEditable() || !isEnabled()) {
      setOpaque(false);
      g.setColor(inactiveColor);
      g.fillRect(0, 0, getWidth(), getHeight());
    } else {
      setOpaque(true);
    }
    super.paintComponent(g);
  }
}