/**
* Returns the x-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
* @return The x-value for the specified series and item.
*/
@Override
public Number getX(int series, int item) {
TimePeriodValues ts = (TimePeriodValues) this.data.get(series);
TimePeriodValue dp = ts.getDataItem(item);
TimePeriod period = dp.getPeriod();
return new Long(getX(period));
}
/** Recalculates the bounds for the collection of items. */
private void recalculateBounds() {
this.minStartIndex = -1;
this.minMiddleIndex = -1;
this.minEndIndex = -1;
this.maxStartIndex = -1;
this.maxMiddleIndex = -1;
this.maxEndIndex = -1;
for (int i = 0; i < this.data.size(); i++) {
TimePeriodValue tpv = (TimePeriodValue) this.data.get(i);
updateBounds(tpv.getPeriod(), i);
}
}
/**
* Adds a data item to the series and sends a {@link SeriesChangeEvent} to all registered
* listeners.
*
* @param item the item (<code>null</code> not permitted).
*/
public void add(TimePeriodValue item) {
if (item == null) {
throw new IllegalArgumentException("Null item not allowed.");
}
this.data.add(item);
updateBounds(item.getPeriod(), this.data.size() - 1);
fireSeriesChanged();
}
/**
* Creates a new instance by copying a subset of the data in this collection.
*
* @param start the index of the first item to copy.
* @param end the index of the last item to copy.
* @return A copy of a subset of the items.
* @throws CloneNotSupportedException if there is a cloning problem.
*/
public TimePeriodValues createCopy(int start, int end) throws CloneNotSupportedException {
TimePeriodValues copy = (TimePeriodValues) super.clone();
copy.data = new ArrayList();
if (this.data.size() > 0) {
for (int index = start; index <= end; index++) {
TimePeriodValue item = (TimePeriodValue) this.data.get(index);
TimePeriodValue clone = (TimePeriodValue) item.clone();
try {
copy.add(clone);
} catch (SeriesException e) {
System.err.println("Failed to add cloned item.");
}
}
}
return copy;
}
/**
* Updates (changes) the value of a data item and sends a {@link SeriesChangeEvent} to all
* registered listeners.
*
* @param index the index of the data item to update.
* @param value the new value (<code>null</code> not permitted).
*/
public void update(int index, Number value) {
TimePeriodValue item = getDataItem(index);
item.setValue(value);
fireSeriesChanged();
}
/**
* Returns the y-value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
* @return The y-value for the specified series and item.
*/
@Override
public Number getY(int series, int item) {
TimePeriodValues ts = (TimePeriodValues) this.data.get(series);
TimePeriodValue dp = ts.getDataItem(item);
return dp.getValue();
}
/**
* Returns the ending X value for the specified series and item.
*
* @param series the series (zero-based index).
* @param item the item (zero-based index).
* @return The ending X value for the specified series and item.
*/
@Override
public Number getEndX(int series, int item) {
TimePeriodValues ts = (TimePeriodValues) this.data.get(series);
TimePeriodValue dp = ts.getDataItem(item);
return new Long(dp.getPeriod().getEnd().getTime());
}
