private static boolean expandMediaSet(
ArrayList<MediaPath> items, MediaSet set, int maxSelection) {
int subCount = set.getSubMediaSetCount();
for (int i = 0; i < subCount; i++) {
if (!expandMediaSet(items, set.getSubMediaSet(i), maxSelection)) {
return false;
}
}
int total = set.getMediaItemCount();
int batch = 50;
int index = 0;
while (index < total) {
int count = index + batch < total ? batch : total - index;
ArrayList<MediaItem> list = set.getMediaItem(index, count);
if (list != null && list.size() > (maxSelection - items.size())) {
return false;
}
for (MediaItem item : list) {
items.add(item.getPath());
}
index += batch;
}
return true;
}
public ArrayList<MediaPath> getSelected(boolean expandSet, int maxSelection) {
ArrayList<MediaPath> selected = new ArrayList<MediaPath>();
if (mIsAlbumSet) {
if (mInverseSelection) {
int total = getTotalCount();
for (int i = 0; i < total; i++) {
MediaSet set = mSourceMediaSet.getSubMediaSet(i);
MediaPath id = set.getPath();
if (!mClickedSet.contains(id)) {
if (expandSet) {
if (!expandMediaSet(selected, set, maxSelection)) {
return null;
}
} else {
selected.add(id);
if (selected.size() > maxSelection) {
return null;
}
}
}
}
} else {
for (MediaPath id : mClickedSet) {
if (expandSet) {
if (!expandMediaSet(selected, mDataManager.getMediaSet(id), maxSelection)) {
return null;
}
} else {
selected.add(id);
if (selected.size() > maxSelection) {
return null;
}
}
}
}
} else {
if (mInverseSelection) {
int total = getTotalCount();
int index = 0;
while (index < total) {
int count = Math.min(total - index, MediaSet.MEDIAITEM_BATCH_FETCH_COUNT);
ArrayList<MediaItem> list = mSourceMediaSet.getMediaItem(index, count);
for (MediaItem item : list) {
MediaPath id = item.getPath();
if (!mClickedSet.contains(id)) {
selected.add(id);
if (selected.size() > maxSelection) {
return null;
}
}
}
index += count;
}
} else {
for (MediaPath id : mClickedSet) {
selected.add(id);
if (selected.size() > maxSelection) {
return null;
}
}
}
}
return selected;
}