@Override
public void setFirst(Double first) {
Point2D oldPosition = super.copy();
Point2D newPosition = super.copy();
newPosition.setFirst(first);
onChange(oldPosition, newPosition);
}
@Nonnull
private Point2D onChange(@Nonnull Point2D oldPosition, @Nonnull Point2D newPosition) {
if (positionListenerEntries != null) {
for (PositionListenerEntry positionListenerEntry : positionListenerEntries) {
if (!positionListenerEntry.listener.beforeChangePosition(
oldPosition.copy(), newPosition)) {
return this;
}
}
}
super.setFirst(newPosition.getFirst());
super.setSecond(newPosition.getSecond());
if (positionListenerEntries != null) {
for (PositionListenerEntry positionListenerEntry : positionListenerEntries) {
positionListenerEntry.listener.afterChangePosition(
oldPosition.copy(), newPosition.copy());
}
}
return this;
}
