conversations-classic/src/main/java/eu/siacs/conversations/ui/adapter/KnownHostsAdapter.java

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package eu.siacs.conversations.ui.adapter;
import android.content.Context;
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import android.support.annotation.NonNull;
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import android.widget.ArrayAdapter;
import android.widget.Filter;
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import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
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import java.util.Locale;
import java.util.regex.Pattern;
import eu.siacs.conversations.Config;
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public class KnownHostsAdapter extends ArrayAdapter<String> {
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private static Pattern E164_PATTERN = Pattern.compile("^\\+[1-9]\\d{1,14}$");
private ArrayList<String> domains;
private Filter domainFilter = new Filter() {
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@Override
protected FilterResults performFiltering(CharSequence constraint) {
final ArrayList<String> 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;
}
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@Override
protected void publishResults(CharSequence constraint, FilterResults results) {
ArrayList filteredList = (ArrayList) results.values;
if (results.count > 0) {
clear();
addAll(filteredList);
notifyDataSetChanged();
}
}
};
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public KnownHostsAdapter(Context context, int viewResourceId, Collection<String> mKnownHosts) {
super(context, viewResourceId, new ArrayList<>());
domains = new ArrayList<>(mKnownHosts);
Collections.sort(domains);
}
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public KnownHostsAdapter(Context context, int viewResourceId) {
super(context, viewResourceId, new ArrayList<>());
domains = new ArrayList<>();
}
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public void refresh(Collection<String> knownHosts) {
domains = new ArrayList<>(knownHosts);
Collections.sort(domains);
notifyDataSetChanged();
}
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@Override
@NonNull
public Filter getFilter() {
return domainFilter;
}
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}