[Microba-controls] commitEdit of a null Date value

[Chris M. <ch...@st...>]

Hi Michael,

I found something for your consideration, which has required changing 
the microba source as configuration was not possible. The problem is 
that JFormattedTextField does not properly support the concept of a null 
date. A null date can't be committed (commitEdit()) to a 
JFormattedTextField. As you can see from the code Sun's bug database 
offers a workaround that I've implemented on your code. This code is 
from changes I've made to BasicDatePickerUI:

	private DefaultFormatterFactory createFormatterFactory() {
		return new DefaultFormatterFactory(new NullCapableDateFormatter(peer
				.getDateFormat()));
	}


    /**
     * To do this enhancement:
     * http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=4745048
     */
    public class NullCapableDateFormatter extends DateFormatter
    {
        public NullCapableDateFormatter(DateFormat dateFormat)
        {
            super( dateFormat);
        }

        public Object stringToValue(String string)
                throws ParseException
        {
            if(string == null || string.length() == 0)
            {
                return null;
            }
            return super.stringToValue(string);
        }
    }


thanks - Chris