package eu.siacs.conversations.ui.adapter; import android.content.Context; import android.support.annotation.NonNull; import android.widget.ArrayAdapter; import android.widget.Filter; import java.util.ArrayList; import java.util.Collection; import java.util.List; import java.util.Locale; public class KnownHostsAdapter extends ArrayAdapter { private ArrayList domains; private Filter domainFilter = new Filter() { @Override protected FilterResults performFiltering(CharSequence constraint) { if (constraint != null) { ArrayList suggestions = new ArrayList<>(); final String[] split = constraint.toString().split("@"); if (split.length == 1) { for (String domain : domains) { suggestions.add(split[0].toLowerCase(Locale .getDefault()) + "@" + domain); } } else if (split.length == 2) { for (String domain : domains) { if (domain.contentEquals(split[1])) { suggestions.clear(); break; } else if (domain.contains(split[1])) { suggestions.add(split[0].toLowerCase(Locale .getDefault()) + "@" + domain); } } } else { return new FilterResults(); } FilterResults filterResults = new FilterResults(); filterResults.values = suggestions; filterResults.count = suggestions.size(); return filterResults; } else { return new FilterResults(); } } @Override protected void publishResults(CharSequence constraint, FilterResults results) { ArrayList filteredList = (ArrayList) results.values; if (results.count > 0) { clear(); for (Object c : filteredList) { add((String) c); } notifyDataSetChanged(); } } }; public KnownHostsAdapter(Context context, int viewResourceId, Collection mKnownHosts) { super(context, viewResourceId, new ArrayList<>()); domains = new ArrayList<>(mKnownHosts); } @Override @NonNull public Filter getFilter() { return domainFilter; } }