JComponent c = getDisclosedComponent(newValue);
        GridBagLayout layout = (GridBagLayout) getLayout();
        GridBagConstraints gbc = new GridBagConstraints();
        if (c != null) {
            gbc = new GridBagConstraints();
            gbc.gridx = 1;
            gbc.weightx = 1d;
            gbc.weighty = 1d;
            gbc.fill = GridBagConstraints.BOTH;
            gbc.anchor = GridBagConstraints.WEST;
            add(c, gbc);
            gbc = new GridBagConstraints();
            gbc.gridx = 0;
            gbc.weightx = 0d;
            gbc.insets = new Insets(0, 1, 0, 1);
            gbc.weighty = 1d;
            gbc.fill = GridBagConstraints.NONE;
            gbc.anchor = GridBagConstraints.SOUTHWEST;
            add(disclosureButton, gbc);
        } else {
            gbc = new GridBagConstraints();
            gbc.gridx = 1;
            gbc.weightx = 1d;
            gbc.weighty = 1d;
            gbc.fill = GridBagConstraints.NONE;
            gbc.anchor = GridBagConstraints.SOUTHWEST;
            gbc.insets = new Insets(0, 1, 0, 1);
            add(disclosureButton, gbc);
        }