1package eu.siacs.conversations.entities;
2
3import android.support.annotation.NonNull;
4import android.support.annotation.Nullable;
5import android.text.TextUtils;
6
7import java.util.ArrayList;
8import java.util.Collections;
9import java.util.HashSet;
10import java.util.List;
11import java.util.Locale;
12import java.util.Set;
13
14import eu.siacs.conversations.Config;
15import eu.siacs.conversations.R;
16import eu.siacs.conversations.services.MessageArchiveService;
17import eu.siacs.conversations.utils.JidHelper;
18import eu.siacs.conversations.utils.UIHelper;
19import eu.siacs.conversations.xmpp.chatstate.ChatState;
20import eu.siacs.conversations.xmpp.forms.Data;
21import eu.siacs.conversations.xmpp.forms.Field;
22import eu.siacs.conversations.xmpp.pep.Avatar;
23import rocks.xmpp.addr.Jid;
24
25public class MucOptions {
26
27 public static final String STATUS_CODE_SELF_PRESENCE = "110";
28 public static final String STATUS_CODE_ROOM_CREATED = "201";
29 public static final String STATUS_CODE_BANNED = "301";
30 public static final String STATUS_CODE_CHANGED_NICK = "303";
31 public static final String STATUS_CODE_KICKED = "307";
32 public static final String STATUS_CODE_AFFILIATION_CHANGE = "321";
33 public static final String STATUS_CODE_LOST_MEMBERSHIP = "322";
34 public static final String STATUS_CODE_SHUTDOWN = "332";
35 private final Set<User> users = new HashSet<>();
36 private final Conversation conversation;
37 public OnRenameListener onRenameListener = null;
38 private boolean mAutoPushConfiguration = true;
39 private Account account;
40 private ServiceDiscoveryResult serviceDiscoveryResult;
41 private boolean isOnline = false;
42 private Error error = Error.NONE;
43 private User self;
44 private String password = null;
45
46 private boolean tookProposedNickFromBookmark = false;
47
48 public MucOptions(Conversation conversation) {
49 this.account = conversation.getAccount();
50 this.conversation = conversation;
51 this.self = new User(this, createJoinJid(getProposedNick()));
52 this.self.affiliation = Affiliation.of(conversation.getAttribute("affiliation"));
53 this.self.role = Role.of(conversation.getAttribute("role"));
54 }
55
56 public Account getAccount() {
57 return this.conversation.getAccount();
58 }
59
60 public boolean setSelf(User user) {
61 this.self = user;
62 final boolean roleChanged = this.conversation.setAttribute("role", user.role.toString());
63 final boolean affiliationChanged = this.conversation.setAttribute("affiliation", user.affiliation.toString());
64 return roleChanged || affiliationChanged;
65 }
66
67 public void changeAffiliation(Jid jid, Affiliation affiliation) {
68 User user = findUserByRealJid(jid);
69 synchronized (users) {
70 if (user != null && user.getRole() == Role.NONE) {
71 users.remove(user);
72 if (affiliation.ranks(Affiliation.MEMBER)) {
73 user.affiliation = affiliation;
74 users.add(user);
75 }
76 }
77 }
78 }
79
80 public void flagNoAutoPushConfiguration() {
81 mAutoPushConfiguration = false;
82 }
83
84 public boolean autoPushConfiguration() {
85 return mAutoPushConfiguration;
86 }
87
88 public boolean isSelf(Jid counterpart) {
89 return counterpart.equals(self.getFullJid());
90 }
91
92 public void resetChatState() {
93 synchronized (users) {
94 for (User user : users) {
95 user.chatState = Config.DEFAULT_CHATSTATE;
96 }
97 }
98 }
99
100 public boolean isTookProposedNickFromBookmark() {
101 return tookProposedNickFromBookmark;
102 }
103
104 void notifyOfBookmarkNick(String nick) {
105 if (nick != null && nick.trim().equals(getSelf().getFullJid().getResource())) {
106 this.tookProposedNickFromBookmark = true;
107 }
108 }
109
110 public boolean mamSupport() {
111 return MessageArchiveService.Version.has(getFeatures());
112 }
113
114 public boolean updateConfiguration(ServiceDiscoveryResult serviceDiscoveryResult) {
115 this.serviceDiscoveryResult = serviceDiscoveryResult;
116 String name;
117 Field roomConfigName = getRoomInfoForm().getFieldByName("muc#roomconfig_roomname");
118 if (roomConfigName != null) {
119 name = roomConfigName.getValue();
120 } else {
121 List<ServiceDiscoveryResult.Identity> identities = serviceDiscoveryResult.getIdentities();
122 String identityName = identities.size() > 0 ? identities.get(0).getName() : null;
123 final Jid jid = conversation.getJid();
124 if (identityName != null && !identityName.equals(jid == null ? null : jid.getEscapedLocal())) {
125 name = identityName;
126 } else {
127 name = null;
128 }
129 }
130 boolean changed = conversation.setAttribute("muc_name", name);
131 changed |= conversation.setAttribute(Conversation.ATTRIBUTE_MEMBERS_ONLY, this.hasFeature("muc_membersonly"));
132 changed |= conversation.setAttribute(Conversation.ATTRIBUTE_MODERATED, this.hasFeature("muc_moderated"));
133 changed |= conversation.setAttribute(Conversation.ATTRIBUTE_NON_ANONYMOUS, this.hasFeature("muc_nonanonymous"));
134 return changed;
135 }
136
137 private Data getRoomInfoForm() {
138 final List<Data> forms = serviceDiscoveryResult == null ? Collections.emptyList() : serviceDiscoveryResult.forms;
139 return forms.size() == 0 ? new Data() : forms.get(0);
140 }
141
142 public String getAvatar() {
143 return account.getRoster().getContact(conversation.getJid()).getAvatarFilename();
144 }
145
146 public boolean hasFeature(String feature) {
147 return this.serviceDiscoveryResult != null && this.serviceDiscoveryResult.features.contains(feature);
148 }
149
150 public boolean hasVCards() {
151 return hasFeature("vcard-temp");
152 }
153
154 public boolean canInvite() {
155 Field field = getRoomInfoForm().getFieldByName("muc#roomconfig_allowinvites");
156 return !membersOnly() || self.getRole().ranks(Role.MODERATOR) || (field != null && "1".equals(field.getValue()));
157 }
158
159 public boolean canChangeSubject() {
160 Field field = getRoomInfoForm().getFieldByName("muc#roominfo_changesubject");
161 return self.getRole().ranks(Role.MODERATOR) || (field != null && "1".equals(field.getValue()));
162 }
163
164 public boolean allowPm() {
165 final Field field = getRoomInfoForm().getFieldByName("muc#roomconfig_allowpm");
166 if (field == null) {
167 return true; //fall back if field does not exists
168 }
169 if ("anyone".equals(field.getValue())) {
170 return true;
171 } else if ("participants".equals(field.getValue())) {
172 return self.getRole().ranks(Role.PARTICIPANT);
173 } else if ("moderators".equals(field.getValue())) {
174 return self.getRole().ranks(Role.MODERATOR);
175 } else {
176 return false;
177 }
178 }
179
180 public boolean participating() {
181 return self.getRole().ranks(Role.PARTICIPANT) || !moderated();
182 }
183
184 public boolean membersOnly() {
185 return conversation.getBooleanAttribute(Conversation.ATTRIBUTE_MEMBERS_ONLY, false);
186 }
187
188 public List<String> getFeatures() {
189 return this.serviceDiscoveryResult != null ? this.serviceDiscoveryResult.features : Collections.emptyList();
190 }
191
192 public boolean nonanonymous() {
193 return conversation.getBooleanAttribute(Conversation.ATTRIBUTE_NON_ANONYMOUS, false);
194 }
195
196 public boolean isPrivateAndNonAnonymous() {
197 return membersOnly() && nonanonymous();
198 }
199
200 public boolean moderated() {
201 return conversation.getBooleanAttribute(Conversation.ATTRIBUTE_MODERATED, false);
202 }
203
204 public User deleteUser(Jid jid) {
205 User user = findUserByFullJid(jid);
206 if (user != null) {
207 synchronized (users) {
208 users.remove(user);
209 boolean realJidInMuc = false;
210 for (User u : users) {
211 if (user.realJid != null && user.realJid.equals(u.realJid)) {
212 realJidInMuc = true;
213 break;
214 }
215 }
216 boolean self = user.realJid != null && user.realJid.equals(account.getJid().asBareJid());
217 if (membersOnly()
218 && nonanonymous()
219 && user.affiliation.ranks(Affiliation.MEMBER)
220 && user.realJid != null
221 && !realJidInMuc
222 && !self) {
223 user.role = Role.NONE;
224 user.avatar = null;
225 user.fullJid = null;
226 users.add(user);
227 }
228 }
229 }
230 return user;
231 }
232
233 //returns true if real jid was new;
234 public boolean updateUser(User user) {
235 User old;
236 boolean realJidFound = false;
237 if (user.fullJid == null && user.realJid != null) {
238 old = findUserByRealJid(user.realJid);
239 realJidFound = old != null;
240 if (old != null) {
241 if (old.fullJid != null) {
242 return false; //don't add. user already exists
243 } else {
244 synchronized (users) {
245 users.remove(old);
246 }
247 }
248 }
249 } else if (user.realJid != null) {
250 old = findUserByRealJid(user.realJid);
251 realJidFound = old != null;
252 synchronized (users) {
253 if (old != null && old.fullJid == null) {
254 users.remove(old);
255 }
256 }
257 }
258 old = findUserByFullJid(user.getFullJid());
259 synchronized (this.users) {
260 if (old != null) {
261 users.remove(old);
262 }
263 boolean fullJidIsSelf = isOnline && user.getFullJid() != null && user.getFullJid().equals(self.getFullJid());
264 if ((!membersOnly() || user.getAffiliation().ranks(Affiliation.MEMBER))
265 && user.getAffiliation().outranks(Affiliation.OUTCAST)
266 && !fullJidIsSelf) {
267 this.users.add(user);
268 return !realJidFound && user.realJid != null;
269 }
270 }
271 return false;
272 }
273
274 public User findUserByFullJid(Jid jid) {
275 if (jid == null) {
276 return null;
277 }
278 synchronized (users) {
279 for (User user : users) {
280 if (jid.equals(user.getFullJid())) {
281 return user;
282 }
283 }
284 }
285 return null;
286 }
287
288 public User findUserByRealJid(Jid jid) {
289 if (jid == null) {
290 return null;
291 }
292 synchronized (users) {
293 for (User user : users) {
294 if (jid.equals(user.realJid)) {
295 return user;
296 }
297 }
298 }
299 return null;
300 }
301
302 public User findOrCreateUserByRealJid(Jid jid, Jid fullJid) {
303 User user = findUserByRealJid(jid);
304 if (user == null) {
305 user = new User(this, fullJid);
306 user.setRealJid(jid);
307 }
308 return user;
309 }
310
311 public User findUser(ReadByMarker readByMarker) {
312 if (readByMarker.getRealJid() != null) {
313 return findOrCreateUserByRealJid(readByMarker.getRealJid().asBareJid(), readByMarker.getFullJid());
314 } else if (readByMarker.getFullJid() != null) {
315 return findUserByFullJid(readByMarker.getFullJid());
316 } else {
317 return null;
318 }
319 }
320
321 public boolean isContactInRoom(Contact contact) {
322 return findUserByRealJid(contact.getJid().asBareJid()) != null;
323 }
324
325 public boolean isUserInRoom(Jid jid) {
326 return findUserByFullJid(jid) != null;
327 }
328
329 public boolean setOnline() {
330 boolean before = this.isOnline;
331 this.isOnline = true;
332 return !before;
333 }
334
335 public ArrayList<User> getUsers() {
336 return getUsers(true);
337 }
338
339 public ArrayList<User> getUsers(boolean includeOffline) {
340 synchronized (users) {
341 ArrayList<User> users = new ArrayList<>();
342 for (User user : this.users) {
343 if (!user.isDomain() && (includeOffline || user.getRole().ranks(Role.PARTICIPANT))) {
344 users.add(user);
345 }
346 }
347 return users;
348 }
349 }
350
351 public ArrayList<User> getUsersWithChatState(ChatState state, int max) {
352 synchronized (users) {
353 ArrayList<User> list = new ArrayList<>();
354 for (User user : users) {
355 if (user.chatState == state) {
356 list.add(user);
357 if (list.size() >= max) {
358 break;
359 }
360 }
361 }
362 return list;
363 }
364 }
365
366 public List<User> getUsers(int max) {
367 ArrayList<User> subset = new ArrayList<>();
368 HashSet<Jid> jids = new HashSet<>();
369 jids.add(account.getJid().asBareJid());
370 synchronized (users) {
371 for (User user : users) {
372 if (user.getRealJid() == null || (user.getRealJid().getLocal() != null && jids.add(user.getRealJid()))) {
373 subset.add(user);
374 }
375 if (subset.size() >= max) {
376 break;
377 }
378 }
379 }
380 return subset;
381 }
382
383 public int getUserCount() {
384 synchronized (users) {
385 return users.size();
386 }
387 }
388
389 private String getProposedNick() {
390 final Bookmark bookmark = this.conversation.getBookmark();
391 final String bookmarkedNick = bookmark == null ? null : bookmark.getNick();
392 if (bookmarkedNick != null && !bookmarkedNick.trim().isEmpty()) {
393 this.tookProposedNickFromBookmark = true;
394 return bookmarkedNick.trim();
395 } else if (!conversation.getJid().isBareJid()) {
396 return conversation.getJid().getResource();
397 } else {
398 final String displayName = account.getDisplayName();
399 if (TextUtils.isEmpty(displayName)) {
400 return JidHelper.localPartOrFallback(account.getJid());
401 } else {
402 return displayName;
403 }
404 }
405 }
406
407 public String getActualNick() {
408 if (this.self.getName() != null) {
409 return this.self.getName();
410 } else {
411 return this.getProposedNick();
412 }
413 }
414
415 public boolean online() {
416 return this.isOnline;
417 }
418
419 public Error getError() {
420 return this.error;
421 }
422
423 public void setError(Error error) {
424 this.isOnline = isOnline && error == Error.NONE;
425 this.error = error;
426 }
427
428 public void setOnRenameListener(OnRenameListener listener) {
429 this.onRenameListener = listener;
430 }
431
432 public void setOffline() {
433 synchronized (users) {
434 this.users.clear();
435 }
436 this.error = Error.NO_RESPONSE;
437 this.isOnline = false;
438 }
439
440 public User getSelf() {
441 return self;
442 }
443
444 public boolean setSubject(String subject) {
445 return this.conversation.setAttribute("subject", subject);
446 }
447
448 public String getSubject() {
449 return this.conversation.getAttribute("subject");
450 }
451
452 public String getName() {
453 return this.conversation.getAttribute("muc_name");
454 }
455
456 private List<User> getFallbackUsersFromCryptoTargets() {
457 List<User> users = new ArrayList<>();
458 for (Jid jid : conversation.getAcceptedCryptoTargets()) {
459 User user = new User(this, null);
460 user.setRealJid(jid);
461 users.add(user);
462 }
463 return users;
464 }
465
466 public List<User> getUsersRelevantForNameAndAvatar() {
467 final List<User> users;
468 if (isOnline) {
469 users = getUsers(5);
470 } else {
471 users = getFallbackUsersFromCryptoTargets();
472 }
473 return users;
474 }
475
476 public String createNameFromParticipants() {
477 List<User> users = getUsersRelevantForNameAndAvatar();
478 if (users.size() >= 2) {
479 StringBuilder builder = new StringBuilder();
480 for (User user : users) {
481 if (builder.length() != 0) {
482 builder.append(", ");
483 }
484 String name = UIHelper.getDisplayName(user);
485 if (name != null) {
486 builder.append(name.split("\\s+")[0]);
487 }
488 }
489 return builder.toString();
490 } else {
491 return null;
492 }
493 }
494
495 public long[] getPgpKeyIds() {
496 List<Long> ids = new ArrayList<>();
497 for (User user : this.users) {
498 if (user.getPgpKeyId() != 0) {
499 ids.add(user.getPgpKeyId());
500 }
501 }
502 ids.add(account.getPgpId());
503 long[] primitiveLongArray = new long[ids.size()];
504 for (int i = 0; i < ids.size(); ++i) {
505 primitiveLongArray[i] = ids.get(i);
506 }
507 return primitiveLongArray;
508 }
509
510 public boolean pgpKeysInUse() {
511 synchronized (users) {
512 for (User user : users) {
513 if (user.getPgpKeyId() != 0) {
514 return true;
515 }
516 }
517 }
518 return false;
519 }
520
521 public boolean everybodyHasKeys() {
522 synchronized (users) {
523 for (User user : users) {
524 if (user.getPgpKeyId() == 0) {
525 return false;
526 }
527 }
528 }
529 return true;
530 }
531
532 public Jid createJoinJid(String nick) {
533 try {
534 return Jid.of(this.conversation.getJid().asBareJid().toString() + "/" + nick);
535 } catch (final IllegalArgumentException e) {
536 return null;
537 }
538 }
539
540 public Jid getTrueCounterpart(Jid jid) {
541 if (jid.equals(getSelf().getFullJid())) {
542 return account.getJid().asBareJid();
543 }
544 User user = findUserByFullJid(jid);
545 return user == null ? null : user.realJid;
546 }
547
548 public String getPassword() {
549 this.password = conversation.getAttribute(Conversation.ATTRIBUTE_MUC_PASSWORD);
550 if (this.password == null && conversation.getBookmark() != null
551 && conversation.getBookmark().getPassword() != null) {
552 return conversation.getBookmark().getPassword();
553 } else {
554 return this.password;
555 }
556 }
557
558 public void setPassword(String password) {
559 if (conversation.getBookmark() != null) {
560 conversation.getBookmark().setPassword(password);
561 } else {
562 this.password = password;
563 }
564 conversation.setAttribute(Conversation.ATTRIBUTE_MUC_PASSWORD, password);
565 }
566
567 public Conversation getConversation() {
568 return this.conversation;
569 }
570
571 public List<Jid> getMembers(final boolean includeDomains) {
572 ArrayList<Jid> members = new ArrayList<>();
573 synchronized (users) {
574 for (User user : users) {
575 if (user.affiliation.ranks(Affiliation.MEMBER) && user.realJid != null && (!user.isDomain() || includeDomains)) {
576 members.add(user.realJid);
577 }
578 }
579 }
580 return members;
581 }
582
583 public enum Affiliation {
584 OWNER(4, R.string.owner),
585 ADMIN(3, R.string.admin),
586 MEMBER(2, R.string.member),
587 OUTCAST(0, R.string.outcast),
588 NONE(1, R.string.no_affiliation);
589
590 private int resId;
591 private int rank;
592 Affiliation(int rank, int resId) {
593 this.resId = resId;
594 this.rank = rank;
595 }
596
597 public static Affiliation of(@Nullable String value) {
598 if (value == null) {
599 return NONE;
600 }
601 try {
602 return Affiliation.valueOf(value.toUpperCase(Locale.US));
603 } catch (IllegalArgumentException e) {
604 return NONE;
605 }
606 }
607
608 public int getResId() {
609 return resId;
610 }
611
612 @Override
613 public String toString() {
614 return name().toLowerCase(Locale.US);
615 }
616
617 public boolean outranks(Affiliation affiliation) {
618 return rank > affiliation.rank;
619 }
620
621 public boolean ranks(Affiliation affiliation) {
622 return rank >= affiliation.rank;
623 }
624 }
625
626 public enum Role {
627 MODERATOR(R.string.moderator, 3),
628 VISITOR(R.string.visitor, 1),
629 PARTICIPANT(R.string.participant, 2),
630 NONE(R.string.no_role, 0);
631
632 private int resId;
633 private int rank;
634 Role(int resId, int rank) {
635 this.resId = resId;
636 this.rank = rank;
637 }
638
639 public static Role of(@Nullable String value) {
640 if (value == null) {
641 return NONE;
642 }
643 try {
644 return Role.valueOf(value.toUpperCase(Locale.US));
645 } catch (IllegalArgumentException e) {
646 return NONE;
647 }
648 }
649
650 public int getResId() {
651 return resId;
652 }
653
654 @Override
655 public String toString() {
656 return name().toLowerCase(Locale.US);
657 }
658
659 public boolean ranks(Role role) {
660 return rank >= role.rank;
661 }
662 }
663
664 public enum Error {
665 NO_RESPONSE,
666 SERVER_NOT_FOUND,
667 REMOTE_SERVER_TIMEOUT,
668 NONE,
669 NICK_IN_USE,
670 PASSWORD_REQUIRED,
671 BANNED,
672 MEMBERS_ONLY,
673 RESOURCE_CONSTRAINT,
674 KICKED,
675 SHUTDOWN,
676 DESTROYED,
677 INVALID_NICK,
678 UNKNOWN
679 }
680
681 private interface OnEventListener {
682 void onSuccess();
683
684 void onFailure();
685 }
686
687 public interface OnRenameListener extends OnEventListener {
688
689 }
690
691 public static class User implements Comparable<User> {
692 private Role role = Role.NONE;
693 private Affiliation affiliation = Affiliation.NONE;
694 private Jid realJid;
695 private Jid fullJid;
696 private long pgpKeyId = 0;
697 private Avatar avatar;
698 private MucOptions options;
699 private ChatState chatState = Config.DEFAULT_CHATSTATE;
700
701 public User(MucOptions options, Jid fullJid) {
702 this.options = options;
703 this.fullJid = fullJid;
704 }
705
706 public String getName() {
707 return fullJid == null ? null : fullJid.getResource();
708 }
709
710 public Role getRole() {
711 return this.role;
712 }
713
714 public void setRole(String role) {
715 this.role = Role.of(role);
716 }
717
718 public Affiliation getAffiliation() {
719 return this.affiliation;
720 }
721
722 public void setAffiliation(String affiliation) {
723 this.affiliation = Affiliation.of(affiliation);
724 }
725
726 public long getPgpKeyId() {
727 if (this.pgpKeyId != 0) {
728 return this.pgpKeyId;
729 } else if (realJid != null) {
730 return getAccount().getRoster().getContact(realJid).getPgpKeyId();
731 } else {
732 return 0;
733 }
734 }
735
736 public void setPgpKeyId(long id) {
737 this.pgpKeyId = id;
738 }
739
740 public Contact getContact() {
741 if (fullJid != null) {
742 return getAccount().getRoster().getContactFromContactList(realJid);
743 } else if (realJid != null) {
744 return getAccount().getRoster().getContact(realJid);
745 } else {
746 return null;
747 }
748 }
749
750 public boolean setAvatar(Avatar avatar) {
751 if (this.avatar != null && this.avatar.equals(avatar)) {
752 return false;
753 } else {
754 this.avatar = avatar;
755 return true;
756 }
757 }
758
759 public String getAvatar() {
760 if (avatar != null) {
761 return avatar.getFilename();
762 }
763 Avatar avatar = realJid != null ? getAccount().getRoster().getContact(realJid).getAvatar() : null;
764 return avatar == null ? null : avatar.getFilename();
765 }
766
767 public Account getAccount() {
768 return options.getAccount();
769 }
770
771 public Conversation getConversation() {
772 return options.getConversation();
773 }
774
775 public Jid getFullJid() {
776 return fullJid;
777 }
778
779 @Override
780 public boolean equals(Object o) {
781 if (this == o) return true;
782 if (o == null || getClass() != o.getClass()) return false;
783
784 User user = (User) o;
785
786 if (role != user.role) return false;
787 if (affiliation != user.affiliation) return false;
788 if (realJid != null ? !realJid.equals(user.realJid) : user.realJid != null)
789 return false;
790 return fullJid != null ? fullJid.equals(user.fullJid) : user.fullJid == null;
791
792 }
793
794 public boolean isDomain() {
795 return realJid != null && realJid.getLocal() == null && role == Role.NONE;
796 }
797
798 @Override
799 public int hashCode() {
800 int result = role != null ? role.hashCode() : 0;
801 result = 31 * result + (affiliation != null ? affiliation.hashCode() : 0);
802 result = 31 * result + (realJid != null ? realJid.hashCode() : 0);
803 result = 31 * result + (fullJid != null ? fullJid.hashCode() : 0);
804 return result;
805 }
806
807 @Override
808 public String toString() {
809 return "[fulljid:" + String.valueOf(fullJid) + ",realjid:" + String.valueOf(realJid) + ",affiliation" + affiliation.toString() + "]";
810 }
811
812 public boolean realJidMatchesAccount() {
813 return realJid != null && realJid.equals(options.account.getJid().asBareJid());
814 }
815
816 @Override
817 public int compareTo(@NonNull User another) {
818 if (another.getAffiliation().outranks(getAffiliation())) {
819 return 1;
820 } else if (getAffiliation().outranks(another.getAffiliation())) {
821 return -1;
822 } else {
823 return getComparableName().compareToIgnoreCase(another.getComparableName());
824 }
825 }
826
827 private String getComparableName() {
828 Contact contact = getContact();
829 if (contact != null) {
830 return contact.getDisplayName();
831 } else {
832 String name = getName();
833 return name == null ? "" : name;
834 }
835 }
836
837 public Jid getRealJid() {
838 return realJid;
839 }
840
841 public void setRealJid(Jid jid) {
842 this.realJid = jid != null ? jid.asBareJid() : null;
843 }
844
845 public boolean setChatState(ChatState chatState) {
846 if (this.chatState == chatState) {
847 return false;
848 }
849 this.chatState = chatState;
850 return true;
851 }
852 }
853}