Example usage for org.joda.time Years ZERO

Introduction

In this page you can find the example usage for org.joda.time Years ZERO.

Prototype

Years ZERO

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Document

Constant representing zero years.

Usage

From source file:net.schweerelos.timeline.model.Timeline.java

License:Open Source License

private void recalculate() {
    if (start == null || end == null) {
        logger.warn("recalculating aborted, start and/or end is null");
        numSlices = 0;/*from  ww  w.  ja  va  2s .  c o m*/
        return;
    }
    Interval interval = new Interval(start, end);

    if (Years.yearsIn(interval).isGreaterThan(Years.ZERO)) {
        // make it start at the start of the current increment mode
        start = start.withDayOfYear(start.dayOfYear().getMinimumValue());
        end = end.withDayOfYear(end.dayOfYear().getMaximumValue());
        interval = new Interval(start, end);

        // figure out number of slices
        numSlices = Years.yearsIn(interval).getYears();
        if (start.plusYears(numSlices).isBefore(end)) {
            numSlices += 1;
        }

        // update label extractor
        sliceLabelExtractor = new SliceLabelExtractor() {
            @Override
            public String extractLabel(DateTime from) {
                return from.year().getAsShortText();
            }
        };

        // update increment
        increment = Years.ONE.toPeriod();
        incrementMode = Mode.Years;
    } else if (Months.monthsIn(interval).isGreaterThan(Months.ZERO)) {
        // make it start at the start of the current increment mode
        start = start.withDayOfMonth(start.dayOfMonth().getMinimumValue());
        end = end.withDayOfMonth(end.dayOfMonth().getMaximumValue());
        interval = new Interval(start, end);

        numSlices = Months.monthsIn(interval).getMonths();
        if (start.plusMonths(numSlices).isBefore(end)) {
            numSlices += 1;
        }

        sliceLabelExtractor = new SliceLabelExtractor() {
            @Override
            public String extractLabel(DateTime from) {
                return from.monthOfYear().getAsShortText();
            }
        };

        increment = Months.ONE.toPeriod();
        incrementMode = Mode.Months;
    } else if (Weeks.weeksIn(interval).isGreaterThan(Weeks.ZERO)) {
        start = start.withDayOfWeek(start.dayOfWeek().getMinimumValue());
        end = end.withDayOfWeek(end.dayOfWeek().getMaximumValue());
        interval = new Interval(start, end);

        numSlices = Weeks.weeksIn(interval).getWeeks();
        if (start.plusWeeks(numSlices).isBefore(end)) {
            numSlices += 1;
        }

        sliceLabelExtractor = new SliceLabelExtractor() {
            @Override
            public String extractLabel(DateTime from) {
                return "W" + from.weekOfWeekyear().getAsShortText();
            }
        };

        increment = Weeks.ONE.toPeriod();
        incrementMode = Mode.Weeks;
    } else {
        numSlices = Days.daysIn(interval).getDays();
        if (start.plusDays(numSlices).isBefore(end)) {
            numSlices += 1;
        }
        if (numSlices == 0) {
            // force at least one day to be drawn
            numSlices = 1;
        }

        sliceLabelExtractor = new SliceLabelExtractor() {
            @Override
            public String extractLabel(DateTime from) {
                return from.dayOfMonth().getAsShortText();
            }
        };

        increment = Days.ONE.toPeriod();
        incrementMode = Mode.Days;
    }

    // reset time of day too
    start = start.withMillisOfDay(start.millisOfDay().getMinimumValue());
    end = end.withMillisOfDay(end.millisOfDay().getMaximumValue());

    // recalculate which intervals are within range
    intervalsWithinRange.clear();
    intervalsWithinRange.addAll(calculateIntervalsWithinRange(start, end));

    // notify listeners
    changeSupport.firePropertyChange(INTERVAL_PROPERTY_KEY, interval, new Interval(start, end));
}

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