@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
itemAdapter = new ItemAdapter();
itemAdapter.setDataSource(this);
itemAdapter.setDelegate(this);
Bundle arguments = getArguments();
if (arguments == null) {
return;
}
long feedRowId = arguments.getLong(BUNDLE_EXTRA_RSS_FEED);
BloclyApplication.getSharedDataSource()
.fetchFeedWithId(
feedRowId,
new DataSource.Callback<RssFeed>() {
@Override
public void onSuccess(RssFeed rssFeed) {
currentFeed = rssFeed;
}
@Override
public void onError(String errorMessage) {}
});
}
@Override
public void onItemClicked(ItemAdapter itemAdapter, RssItem rssItem) {
int positionToExpand = -1;
int positionToContract = -1;
if (itemAdapter.getExpandedItem() != null) {
positionToContract = currentItems.indexOf(itemAdapter.getExpandedItem());
View viewToContract = recyclerView.getLayoutManager().findViewByPosition(positionToContract);
if (viewToContract == null) {
positionToContract = -1;
}
}
if (itemAdapter.getExpandedItem() != rssItem) {
positionToExpand = currentItems.indexOf(rssItem);
itemAdapter.setExpandedItem(rssItem);
} else {
itemAdapter.setExpandedItem(null);
}
if (positionToContract > -1) {
itemAdapter.notifyItemChanged(positionToContract);
}
if (positionToExpand > -1) {
itemAdapter.notifyItemChanged(positionToExpand);
delegate.get().onItemExpanded(this, itemAdapter.getExpandedItem());
} else {
delegate.get().onItemContracted(this, rssItem);
return;
}
View viewToExpand = recyclerView.getLayoutManager().findViewByPosition(positionToExpand);
int lessToScroll = 0;
if (positionToContract > -1 && positionToContract < positionToExpand) {
lessToScroll = itemAdapter.getExpandedItemHeight() - itemAdapter.getCollapsedItemHeight();
}
recyclerView.smoothScrollBy(0, viewToExpand.getTop() - lessToScroll);
}