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.Collections; import java.util.Locale; import java.util.regex.Pattern; import eu.siacs.conversations.Config; public class KnownHostsAdapter extends ArrayAdapter { private static Pattern E164_PATTERN = Pattern.compile("^\\+?[1-9]\\d{1,14}$"); private ArrayList domains; private Filter domainFilter = new Filter() { @Override protected FilterResults performFiltering(CharSequence constraint) { final ArrayList suggestions = new ArrayList<>(); final String[] split = constraint == null ? new String[0] : constraint.toString().split("@"); if (split.length == 1) { final String local = split[0].toLowerCase(Locale.ENGLISH); if (Config.QUICKSY_DOMAIN != null && E164_PATTERN.matcher(local).matches()) { suggestions.add(local + '@' + Config.QUICKSY_DOMAIN); } else { for (String domain : domains) { suggestions.add(local + '@' + domain); } } } else if (split.length == 2) { final String localPart = split[0].toLowerCase(Locale.ENGLISH); final String domainPart = split[1].toLowerCase(Locale.ENGLISH); if (domains.contains(domainPart)) { return new FilterResults(); } for (String domain : domains) { if (domain.contains(domainPart)) { suggestions.add(localPart + "@" + domain); } } } else { return new FilterResults(); } FilterResults filterResults = new FilterResults(); filterResults.values = suggestions; filterResults.count = suggestions.size(); return filterResults; } @Override protected void publishResults(CharSequence constraint, FilterResults results) { ArrayList filteredList = (ArrayList) results.values; if (results.count > 0) { clear(); addAll(filteredList); notifyDataSetChanged(); } } }; public KnownHostsAdapter(Context context, int viewResourceId, Collection mKnownHosts) { super(context, viewResourceId, new ArrayList<>()); domains = new ArrayList<>(mKnownHosts); Collections.sort(domains); } public KnownHostsAdapter(Context context, int viewResourceId) { super(context, viewResourceId, new ArrayList<>()); domains = new ArrayList<>(); } public void refresh(Collection knownHosts) { domains = new ArrayList<>(knownHosts); Collections.sort(domains); notifyDataSetChanged(); } @Override @NonNull public Filter getFilter() { return domainFilter; } }