Disable multiple date ranges jDateChooser

Question

I want to disable multiple date ranges on a JCalendar. I\'m following these steps, but I need to know how can I add multiple date evaluators. Help me please, thanks.

Answer 1

Just call addDateEvaluator() for each RangeEvaluator that you create. This adds the RangeEvaluator to a List dateEvaluators inside JDayChooser. Later, JDayChooser iterates over the list when it decides how to draw the day buttons.

Edit: Here's the RangeEvaluator I used.

private static class RangeEvaluator extends MinMaxDateEvaluator {

    @Override
    public boolean isInvalid(Date date) {
        return !super.isInvalid(date);
    }
}

And here's how I used it.

RangeEvaluator re = new RangeEvaluator();
re.setMinSelectableDate(...);
re.setMaxSelectableDate(...);
JCalendar jc = new JCalendar();
jc.getDayChooser().addDateEvaluator(re);

One problem I noticed is that you have to tell the JDayChooser to reconfigure its buttons using the new evaluator. You can fire a property change event or just change a bound property.

jc.setCalendar(jc.getCalendar());

Answer 2

Based on your update there are two things that happen here.

First is a little mistake when you instatiate your SimpleDateFormat:

SimpleDateFormat dateFormat = new SimpleDateFormat("dd-mm-yyyy");

In this pattern "mm" refers to minutes not months. It should be:

SimpleDateFormat dateFormat = new SimpleDateFormat("dd-MM-yyyy");

Second problem is IMHO a bug since day chooser seems to not apply filters until a new date is set or it has to be repainted because of month/year change. You can test it changing month to August and then back to September: dates from 9/11 to 9/15 will be disabled. To solve this inconvenient behavior just set current date explicitely like this:

JCalendar calendar = new JCalendar();
calendar.getDayChooser().addDateEvaluator(evaluator);
calendar.setDate(Calendar.getInstance().getTime());

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Side note: while this library is very very useful it has a couple of bug/design issues so don't hesitate to ask for help.