/**
* Adds any unique x-values from 'series' to the dataset, and also adds any x-values that are in
* the dataset but not in 'series' to the series.
*
* @param series the series (<code>null</code> not permitted).
*/
private void updateXPoints(XYSeries series) {
if (series == null) {
throw new IllegalArgumentException("Null 'series' not permitted.");
}
HashSet seriesXPoints = new HashSet();
boolean savedState = this.propagateEvents;
this.propagateEvents = false;
for (int itemNo = 0; itemNo < series.getItemCount(); itemNo++) {
Number xValue = series.getX(itemNo);
seriesXPoints.add(xValue);
if (!this.xPoints.contains(xValue)) {
this.xPoints.add(xValue);
int seriesCount = this.data.size();
for (int seriesNo = 0; seriesNo < seriesCount; seriesNo++) {
XYSeries dataSeries = (XYSeries) this.data.get(seriesNo);
if (!dataSeries.equals(series)) {
dataSeries.add(xValue, null);
}
}
}
}
Iterator iterator = this.xPoints.iterator();
while (iterator.hasNext()) {
Number xPoint = (Number) iterator.next();
if (!seriesXPoints.contains(xPoint)) {
series.add(xPoint, null);
}
}
this.propagateEvents = savedState;
}
