/*
* TODO Should the disk requests use Strings? Or URIs?
*
* TODO Consider changing the List to a Set so that requests are not duplicated.
*/
public void onPositionVisited(int position) {
calculateDirection(position);
RangesToCache ranges = calculateRanges(position);
for (int i = ranges.diskCacheLowerIndex; i < ranges.diskCacheUpperIndex; i++) {
List<String> precacheRequestUris = mPrecacheInformationProvider.getRequestsForDiskPrecache(i);
precacheListToDisk(precacheRequestUris, position);
}
for (int i = ranges.memCacheLowerIndex; i < ranges.memCacheUpperIndex; i++) {
List<PrecacheRequest> precacheRequests =
mPrecacheInformationProvider.getRequestsForMemoryPrecache(i);
precacheListToMemory(precacheRequests, position);
}
}
private void calculateRangesForDown(int position, RangesToCache indices) {
int count = mPrecacheInformationProvider.getCount();
if (isFirstCalculation) {
indices.memCacheLowerIndex = Math.min(count, position + 1);
} else {
indices.memCacheLowerIndex = Math.min(count, position + mMemCacheRange);
}
indices.memCacheUpperIndex = Math.min(count, position + 1 + mMemCacheRange);
if (isFirstCalculation) {
indices.diskCacheLowerIndex = Math.min(count, indices.memCacheUpperIndex);
} else {
indices.diskCacheLowerIndex =
Math.min(count, indices.memCacheUpperIndex + mDiskCacheRange - 1);
}
indices.diskCacheUpperIndex = Math.min(count, indices.memCacheUpperIndex + mDiskCacheRange);
isFirstCalculation = false;
}
