suggest quicksy.im when user enters e164 in enter jid dialog

src/main/java/eu/siacs/conversations/Config.java

@@ -41,6 +41,7 @@ public final class Config {
 
 	public static final String DOMAIN_LOCK = null; //only allow account creation for this domain
 	public static final String MAGIC_CREATE_DOMAIN = "conversations.im";
+	public static final String QUICKSY_DOMAIN = "quicksy.im";
 	public static final boolean DISALLOW_REGISTRATION_IN_UI = false; //hide the register checkbox
 
 	public static final boolean USE_RANDOM_RESOURCE_ON_EVERY_BIND = false;

src/main/java/eu/siacs/conversations/services/XmppConnectionService.java

@@ -3544,12 +3544,15 @@ public class XmppConnectionService extends Service {
 			for (final Contact contact : account.getRoster().getContacts()) {
 				if (contact.showInRoster()) {
 					final String server = contact.getServer();
-					if (server != null && !hosts.contains(server)) {
+					if (server != null) {
 						hosts.add(server);
 					}
 				}
 			}
 		}
+		if (Config.QUICKSY_DOMAIN != null) {
+		    hosts.remove(Config.QUICKSY_DOMAIN); //we only want to show this when we type a e164 number
+        }
 		if (Config.DOMAIN_LOCK != null) {
 			hosts.add(Config.DOMAIN_LOCK);
 		}

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

@@ -7,9 +7,16 @@ 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<String> {
+
+    private static Pattern E164_PATTERN = Pattern.compile("^\\+?[1-9]\\d{1,14}$");
+
     private ArrayList<String> domains;
     private Filter domainFilter = new Filter() {
 
@@ -19,8 +26,12 @@ public class KnownHostsAdapter extends ArrayAdapter<String> {
             final String[] split = constraint == null ? new String[0] : constraint.toString().split("@");
             if (split.length == 1) {
                 final String local = split[0].toLowerCase(Locale.ENGLISH);
-                for (String domain : domains) {
+                if (Config.QUICKSY_DOMAIN != null && E164_PATTERN.matcher(local).matches()) {
-                    suggestions.add(local + "@" + domain);
+                    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);
@@ -56,6 +67,7 @@ public class KnownHostsAdapter extends ArrayAdapter<String> {
     public KnownHostsAdapter(Context context, int viewResourceId, Collection<String> mKnownHosts) {
         super(context, viewResourceId, new ArrayList<>());
         domains = new ArrayList<>(mKnownHosts);
+        Collections.sort(domains);
     }
 
     public KnownHostsAdapter(Context context, int viewResourceId) {
@@ -65,6 +77,7 @@ public class KnownHostsAdapter extends ArrayAdapter<String> {
 
     public void refresh(Collection<String> knownHosts) {
         domains = new ArrayList<>(knownHosts);
+        Collections.sort(domains);
         notifyDataSetChanged();
     }
 

src/quick/java/eu/siacs/conversations/services/QuickConversationsService.java

@@ -125,7 +125,7 @@ public class QuickConversationsService {
     private void createAccountAndWait(Phonenumber.PhoneNumber phoneNumber, final long timestamp) {
         String local = PhoneNumberUtilWrapper.normalize(service, phoneNumber);
         Log.d(Config.LOGTAG, "requesting verification for " + PhoneNumberUtilWrapper.normalize(service, phoneNumber));
-        Jid jid = Jid.of(local, "quick.conversations.im", null);
+        Jid jid = Jid.of(local, Config.QUICKSY_DOMAIN, null);
         Account account = AccountUtils.getFirst(service);
         if (account == null || !account.getJid().asBareJid().equals(jid.asBareJid())) {
             if (account != null) {