public void remove(int offs, int len) throws BadLocationException {
		// return immediately when selecting an item
		if (selecting)
			return;
		if (hitBackspace) {
			// user hit backspace => move the selection backwards
			// old item keeps being selected
			if (offs > 0) {
				if (hitBackspaceOnSelection)
					offs--;
			} else {
				// User hit backspace with the cursor positioned on the start => beep
				comboBox.getToolkit().beep(); // when available use: UIManager.getLookAndFeel().provideErrorFeedback(comboBox);
			}
		} else {
			super.remove(offs, len);
		}
	}