/**
* Get the level which is best for displaying the given range.
*
* @param levels list of levels to be checked
* @param r the range to be displayed
* @return
*/
private Level getBestLevel(List<Level> levels, Range r) {
for (int i = levels.size() - 1; i > 0; i--) {
Level lev = levels.get(i);
if (r.getLength() > lev.resolution * ContinuousFormatterHelper.NOTIONAL_SCREEN_SIZE / 2) {
return lev;
}
}
return levels.get(0);
}
/**
* This function is equivalent to getSelectedFromList(URI uri, List<Record> data) but it uses
* range to check whether anything has changed since the last request. If nothing has changed,
* return the same list.
*/
public List<Record> getSelectedFromList(String name, Range range, List<Record> data) {
if (range.equals(rangeMap.get(name)) && currentMap.get(name) != null) {
return currentMap.get(name);
}
rangeMap.put(name, range);
List<Record> currentSelected = getSelectedFromList(name, data);
currentMap.put(name, currentSelected);
return currentSelected;
}