1package eu.siacs.conversations.ui;
2
3import java.util.ArrayList;
4import java.util.List;
5import java.util.Set;
6
7import net.java.otr4j.session.SessionStatus;
8import eu.siacs.conversations.R;
9import eu.siacs.conversations.crypto.PgpEngine;
10import eu.siacs.conversations.entities.Account;
11import eu.siacs.conversations.entities.Contact;
12import eu.siacs.conversations.entities.Conversation;
13import eu.siacs.conversations.entities.Message;
14import eu.siacs.conversations.entities.MucOptions;
15import eu.siacs.conversations.entities.Presences;
16import eu.siacs.conversations.services.XmppConnectionService;
17import eu.siacs.conversations.ui.EditMessage.OnEnterPressed;
18import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
19import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
20import eu.siacs.conversations.ui.adapter.MessageAdapter;
21import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
22import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
23import eu.siacs.conversations.utils.UIHelper;
24import android.app.AlertDialog;
25import android.app.Fragment;
26import android.app.PendingIntent;
27import android.content.Context;
28import android.content.DialogInterface;
29import android.content.Intent;
30import android.content.IntentSender;
31import android.content.IntentSender.SendIntentException;
32import android.os.Bundle;
33import android.text.Editable;
34import android.text.Selection;
35import android.view.Gravity;
36import android.view.KeyEvent;
37import android.view.LayoutInflater;
38import android.view.View;
39import android.view.View.OnClickListener;
40import android.view.ViewGroup;
41import android.view.inputmethod.EditorInfo;
42import android.view.inputmethod.InputMethodManager;
43import android.widget.AbsListView.OnScrollListener;
44import android.widget.TextView.OnEditorActionListener;
45import android.widget.AbsListView;
46
47import android.widget.ListView;
48import android.widget.ImageButton;
49import android.widget.RelativeLayout;
50import android.widget.TextView;
51import android.widget.Toast;
52
53public class ConversationFragment extends Fragment {
54
55 protected Conversation conversation;
56 protected ListView messagesView;
57 protected LayoutInflater inflater;
58 protected List<Message> messageList = new ArrayList<Message>();
59 protected MessageAdapter messageListAdapter;
60 protected Contact contact;
61
62 protected String queuedPqpMessage = null;
63
64 private EditMessage mEditMessage;
65 private ImageButton mSendButton;
66 private String pastedText = null;
67 private RelativeLayout snackbar;
68 private TextView snackbarMessage;
69 private TextView snackbarAction;
70
71 private boolean messagesLoaded = false;
72
73 private IntentSender askForPassphraseIntent = null;
74
75 private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
76
77 @Override
78 public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
79 if (actionId == EditorInfo.IME_ACTION_SEND) {
80 InputMethodManager imm = (InputMethodManager) v.getContext()
81 .getSystemService(Context.INPUT_METHOD_SERVICE);
82 imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
83 sendMessage();
84 return true;
85 } else {
86 return false;
87 }
88 }
89 };
90
91 private OnClickListener mSendButtonListener = new OnClickListener() {
92
93 @Override
94 public void onClick(View v) {
95 sendMessage();
96 }
97 };
98 protected OnClickListener clickToDecryptListener = new OnClickListener() {
99
100 @Override
101 public void onClick(View v) {
102 if (activity.hasPgp() && askForPassphraseIntent != null) {
103 try {
104 getActivity().startIntentSenderForResult(
105 askForPassphraseIntent,
106 ConversationActivity.REQUEST_DECRYPT_PGP, null, 0,
107 0, 0);
108 } catch (SendIntentException e) {
109 //
110 }
111 }
112 }
113 };
114
115 private OnClickListener clickToMuc = new OnClickListener() {
116
117 @Override
118 public void onClick(View v) {
119 Intent intent = new Intent(getActivity(),
120 ConferenceDetailsActivity.class);
121 intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
122 intent.putExtra("uuid", conversation.getUuid());
123 startActivity(intent);
124 }
125 };
126
127 private OnClickListener leaveMuc = new OnClickListener() {
128
129 @Override
130 public void onClick(View v) {
131 activity.endConversation(conversation);
132 }
133 };
134
135 private OnClickListener enterPassword = new OnClickListener() {
136
137 @Override
138 public void onClick(View v) {
139 MucOptions muc = conversation.getMucOptions();
140 String password = muc.getPassword();
141 if (password == null) {
142 password = "";
143 }
144 activity.quickPasswordEdit(password, new OnValueEdited() {
145
146 @Override
147 public void onValueEdited(String value) {
148 activity.xmppConnectionService.providePasswordForMuc(
149 conversation, value);
150 }
151 });
152 }
153 };
154
155 private OnScrollListener mOnScrollListener = new OnScrollListener() {
156
157 @Override
158 public void onScrollStateChanged(AbsListView view, int scrollState) {
159 // TODO Auto-generated method stub
160
161 }
162
163 @Override
164 public void onScroll(AbsListView view, int firstVisibleItem,
165 int visibleItemCount, int totalItemCount) {
166 if (firstVisibleItem == 0 && messagesLoaded) {
167 long timestamp = messageList.get(0).getTimeSent();
168 messagesLoaded = false;
169 int size = activity.xmppConnectionService.loadMoreMessages(
170 conversation, timestamp);
171 messageList.clear();
172 messageList.addAll(conversation.getMessages());
173 updateStatusMessages();
174 messageListAdapter.notifyDataSetChanged();
175 if (size != 0) {
176 messagesLoaded = true;
177 }
178 messagesView.setSelectionFromTop(size + 1, 0);
179 }
180 }
181 };
182
183 private ConversationActivity activity;
184
185 private void sendMessage() {
186 if (this.conversation == null) {
187 return;
188 }
189 if (mEditMessage.getText().length() < 1) {
190 if (this.conversation.getMode() == Conversation.MODE_MULTI) {
191 conversation.setNextPresence(null);
192 updateChatMsgHint();
193 }
194 return;
195 }
196 Message message = new Message(conversation, mEditMessage.getText()
197 .toString(), conversation.getNextEncryption(activity
198 .forceEncryption()));
199 if (conversation.getMode() == Conversation.MODE_MULTI) {
200 if (conversation.getNextPresence() != null) {
201 message.setPresence(conversation.getNextPresence());
202 message.setType(Message.TYPE_PRIVATE);
203 conversation.setNextPresence(null);
204 }
205 }
206 if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_OTR) {
207 sendOtrMessage(message);
208 } else if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_PGP) {
209 sendPgpMessage(message);
210 } else {
211 sendPlainTextMessage(message);
212 }
213 }
214
215 public void updateChatMsgHint() {
216 if (conversation.getMode() == Conversation.MODE_MULTI
217 && conversation.getNextPresence() != null) {
218 this.mEditMessage.setHint(getString(
219 R.string.send_private_message_to,
220 conversation.getNextPresence()));
221 } else {
222 switch (conversation.getNextEncryption(activity.forceEncryption())) {
223 case Message.ENCRYPTION_NONE:
224 mEditMessage
225 .setHint(getString(R.string.send_plain_text_message));
226 break;
227 case Message.ENCRYPTION_OTR:
228 mEditMessage.setHint(getString(R.string.send_otr_message));
229 break;
230 case Message.ENCRYPTION_PGP:
231 mEditMessage.setHint(getString(R.string.send_pgp_message));
232 break;
233 default:
234 break;
235 }
236 }
237 }
238
239 @Override
240 public View onCreateView(final LayoutInflater inflater,
241 ViewGroup container, Bundle savedInstanceState) {
242 final View view = inflater.inflate(R.layout.fragment_conversation,
243 container, false);
244 mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
245 mEditMessage.setOnClickListener(new OnClickListener() {
246
247 @Override
248 public void onClick(View v) {
249 activity.hideConversationsOverview();
250 }
251 });
252 mEditMessage.setOnEditorActionListener(mEditorActionListener);
253 mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
254
255 @Override
256 public void onEnterPressed() {
257 sendMessage();
258 }
259 });
260
261 mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
262 mSendButton.setOnClickListener(this.mSendButtonListener);
263
264 snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
265 snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
266 snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
267
268 messagesView = (ListView) view.findViewById(R.id.messages_view);
269 messagesView.setOnScrollListener(mOnScrollListener);
270 messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
271 messageListAdapter = new MessageAdapter(
272 (ConversationActivity) getActivity(), this.messageList);
273 messageListAdapter
274 .setOnContactPictureClicked(new OnContactPictureClicked() {
275
276 @Override
277 public void onContactPictureClicked(Message message) {
278 if (message.getStatus() <= Message.STATUS_RECEIVED) {
279 if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
280 if (message.getPresence() != null) {
281 highlightInConference(message.getPresence());
282 } else {
283 highlightInConference(message
284 .getCounterpart());
285 }
286 } else {
287 Contact contact = message.getConversation()
288 .getContact();
289 if (contact.showInRoster()) {
290 activity.switchToContactDetails(contact);
291 } else {
292 activity.showAddToRosterDialog(message
293 .getConversation());
294 }
295 }
296 }
297 }
298 });
299 messageListAdapter
300 .setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
301
302 @Override
303 public void onContactPictureLongClicked(Message message) {
304 if (message.getStatus() <= Message.STATUS_RECEIVED) {
305 if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
306 if (message.getPresence() != null) {
307 privateMessageWith(message.getPresence());
308 } else {
309 privateMessageWith(message.getCounterpart());
310 }
311 }
312 }
313 }
314 });
315 messagesView.setAdapter(messageListAdapter);
316
317 return view;
318 }
319
320 protected void privateMessageWith(String counterpart) {
321 this.mEditMessage.setText("");
322 this.conversation.setNextPresence(counterpart);
323 updateChatMsgHint();
324 }
325
326 protected void highlightInConference(String nick) {
327 String oldString = mEditMessage.getText().toString().trim();
328 if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
329 mEditMessage.getText().insert(0, nick + ": ");
330 } else {
331 if (mEditMessage.getText().charAt(
332 mEditMessage.getSelectionStart() - 1) != ' ') {
333 nick = " " + nick;
334 }
335 mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
336 nick + " ");
337 }
338 }
339
340 @Override
341 public void onStart() {
342 super.onStart();
343 this.activity = (ConversationActivity) getActivity();
344 if (activity.xmppConnectionServiceBound) {
345 this.onBackendConnected();
346 }
347 }
348
349 @Override
350 public void onStop() {
351 super.onStop();
352 if (this.conversation != null) {
353 this.conversation.setNextMessage(mEditMessage.getText().toString());
354 }
355 }
356
357 public void onBackendConnected() {
358 this.activity = (ConversationActivity) getActivity();
359 this.conversation = activity.getSelectedConversation();
360 if (this.conversation == null) {
361 return;
362 }
363 String oldString = conversation.getNextMessage().trim();
364 if (this.pastedText == null) {
365 this.mEditMessage.setText(oldString);
366 } else {
367
368 if (oldString.isEmpty()) {
369 mEditMessage.setText(pastedText);
370 } else {
371 mEditMessage.setText(oldString + " " + pastedText);
372 }
373 pastedText = null;
374 }
375 int position = mEditMessage.length();
376 Editable etext = mEditMessage.getText();
377 Selection.setSelection(etext, position);
378 if (activity.isConversationsOverviewHideable()) {
379 if (!activity.shouldPaneBeOpen()) {
380 activity.hideConversationsOverview();
381 activity.openConversation(conversation);
382 }
383 }
384 if (this.conversation.getMode() == Conversation.MODE_MULTI) {
385 conversation.setNextPresence(null);
386 }
387 updateMessages();
388 }
389
390 private void decryptMessage(Message message) {
391 PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
392 if (engine != null) {
393 engine.decrypt(message, new UiCallback<Message>() {
394
395 @Override
396 public void userInputRequried(PendingIntent pi, Message message) {
397 askForPassphraseIntent = pi.getIntentSender();
398 showSnackbar(R.string.openpgp_messages_found,
399 R.string.decrypt, clickToDecryptListener);
400 }
401
402 @Override
403 public void success(Message message) {
404 activity.xmppConnectionService.databaseBackend
405 .updateMessage(message);
406 updateMessages();
407 }
408
409 @Override
410 public void error(int error, Message message) {
411 message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
412 // updateMessages();
413 }
414 });
415 }
416 }
417
418 public void updateMessages() {
419 if (getView() == null) {
420 return;
421 }
422 hideSnackbar();
423 final ConversationActivity activity = (ConversationActivity) getActivity();
424 if (this.conversation != null) {
425 final Contact contact = this.conversation.getContact();
426 if (this.conversation.isMuted()) {
427 showSnackbar(R.string.notifications_disabled, R.string.enable,
428 new OnClickListener() {
429
430 @Override
431 public void onClick(View v) {
432 conversation.setMutedTill(0);
433 updateMessages();
434 }
435 });
436 } else if (!contact.showInRoster()
437 && contact
438 .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
439 showSnackbar(R.string.contact_added_you, R.string.add_back,
440 new OnClickListener() {
441
442 @Override
443 public void onClick(View v) {
444 activity.xmppConnectionService
445 .createContact(contact);
446 activity.switchToContactDetails(contact);
447 }
448 });
449 }
450 for (Message message : this.conversation.getMessages()) {
451 if ((message.getEncryption() == Message.ENCRYPTION_PGP)
452 && ((message.getStatus() == Message.STATUS_RECEIVED) || (message
453 .getStatus() == Message.STATUS_SEND))) {
454 decryptMessage(message);
455 break;
456 }
457 }
458 this.messageList.clear();
459 if (this.conversation.getMessages().size() == 0) {
460 messagesLoaded = false;
461 } else {
462 this.messageList.addAll(this.conversation.getMessages());
463 messagesLoaded = true;
464 updateStatusMessages();
465 }
466 this.messageListAdapter.notifyDataSetChanged();
467 if (conversation.getMode() == Conversation.MODE_SINGLE) {
468 if (messageList.size() >= 1) {
469 makeFingerprintWarning(conversation.getLatestEncryption());
470 }
471 } else {
472 if (!conversation.getMucOptions().online()
473 && conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
474 int error = conversation.getMucOptions().getError();
475 switch (error) {
476 case MucOptions.ERROR_NICK_IN_USE:
477 showSnackbar(R.string.nick_in_use, R.string.edit,
478 clickToMuc);
479 break;
480 case MucOptions.ERROR_ROOM_NOT_FOUND:
481 showSnackbar(R.string.conference_not_found,
482 R.string.leave, leaveMuc);
483 break;
484 case MucOptions.ERROR_PASSWORD_REQUIRED:
485 showSnackbar(R.string.conference_requires_password,
486 R.string.enter_password, enterPassword);
487 break;
488 default:
489 break;
490 }
491 }
492 }
493 getActivity().invalidateOptionsMenu();
494 updateChatMsgHint();
495 if (!activity.shouldPaneBeOpen()) {
496 activity.xmppConnectionService.markRead(conversation,true);
497 activity.updateConversationList();
498 }
499 this.updateSendButton();
500 }
501 }
502
503 private void messageSent() {
504 int size = this.messageList.size();
505 if (size >= 1 && this.messagesView.getLastVisiblePosition() != size - 1) {
506 messagesView.setSelection(size - 1);
507 }
508 mEditMessage.setText("");
509 updateChatMsgHint();
510 }
511
512 public void updateSendButton() {
513 Conversation c = this.conversation;
514 if (activity.useSendButtonToIndicateStatus() && c != null
515 && c.getAccount().getStatus() == Account.STATUS_ONLINE) {
516 if (c.getMode() == Conversation.MODE_SINGLE) {
517 switch (c.getContact().getMostAvailableStatus()) {
518 case Presences.CHAT:
519 this.mSendButton
520 .setImageResource(R.drawable.ic_action_send_now_online);
521 break;
522 case Presences.ONLINE:
523 this.mSendButton
524 .setImageResource(R.drawable.ic_action_send_now_online);
525 break;
526 case Presences.AWAY:
527 this.mSendButton
528 .setImageResource(R.drawable.ic_action_send_now_away);
529 break;
530 case Presences.XA:
531 this.mSendButton
532 .setImageResource(R.drawable.ic_action_send_now_away);
533 break;
534 case Presences.DND:
535 this.mSendButton
536 .setImageResource(R.drawable.ic_action_send_now_dnd);
537 break;
538 default:
539 this.mSendButton
540 .setImageResource(R.drawable.ic_action_send_now_offline);
541 break;
542 }
543 } else if (c.getMode() == Conversation.MODE_MULTI) {
544 if (c.getMucOptions().online()) {
545 this.mSendButton
546 .setImageResource(R.drawable.ic_action_send_now_online);
547 } else {
548 this.mSendButton
549 .setImageResource(R.drawable.ic_action_send_now_offline);
550 }
551 } else {
552 this.mSendButton
553 .setImageResource(R.drawable.ic_action_send_now_offline);
554 }
555 } else {
556 this.mSendButton
557 .setImageResource(R.drawable.ic_action_send_now_offline);
558 }
559 }
560
561 protected void updateStatusMessages() {
562 if (conversation.getMode() == Conversation.MODE_SINGLE) {
563 for (int i = this.messageList.size() - 1; i >= 0; --i) {
564 if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
565 return;
566 } else {
567 if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
568 this.messageList.add(i + 1,
569 Message.createStatusMessage(conversation));
570 return;
571 }
572 }
573 }
574 }
575 }
576
577 protected void makeFingerprintWarning(int latestEncryption) {
578 Set<String> knownFingerprints = conversation.getContact()
579 .getOtrFingerprints();
580 if ((latestEncryption == Message.ENCRYPTION_OTR)
581 && (conversation.hasValidOtrSession()
582 && (!conversation.isMuted())
583 && (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) && (!knownFingerprints
584 .contains(conversation.getOtrFingerprint())))) {
585 showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify,
586 new OnClickListener() {
587
588 @Override
589 public void onClick(View v) {
590 if (conversation.getOtrFingerprint() != null) {
591 AlertDialog dialog = UIHelper
592 .getVerifyFingerprintDialog(
593 (ConversationActivity) getActivity(),
594 conversation, snackbar);
595 dialog.show();
596 }
597 }
598 });
599 }
600 }
601
602 protected void showSnackbar(int message, int action,
603 OnClickListener clickListener) {
604 snackbar.setVisibility(View.VISIBLE);
605 snackbar.setOnClickListener(null);
606 snackbarMessage.setText(message);
607 snackbarMessage.setOnClickListener(null);
608 snackbarAction.setText(action);
609 snackbarAction.setOnClickListener(clickListener);
610 }
611
612 protected void hideSnackbar() {
613 snackbar.setVisibility(View.GONE);
614 }
615
616 protected void sendPlainTextMessage(Message message) {
617 ConversationActivity activity = (ConversationActivity) getActivity();
618 activity.xmppConnectionService.sendMessage(message);
619 messageSent();
620 }
621
622 protected void sendPgpMessage(final Message message) {
623 final ConversationActivity activity = (ConversationActivity) getActivity();
624 final XmppConnectionService xmppService = activity.xmppConnectionService;
625 final Contact contact = message.getConversation().getContact();
626 if (activity.hasPgp()) {
627 if (conversation.getMode() == Conversation.MODE_SINGLE) {
628 if (contact.getPgpKeyId() != 0) {
629 xmppService.getPgpEngine().hasKey(contact,
630 new UiCallback<Contact>() {
631
632 @Override
633 public void userInputRequried(PendingIntent pi,
634 Contact contact) {
635 activity.runIntent(
636 pi,
637 ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
638 }
639
640 @Override
641 public void success(Contact contact) {
642 messageSent();
643 activity.encryptTextMessage(message);
644 }
645
646 @Override
647 public void error(int error, Contact contact) {
648
649 }
650 });
651
652 } else {
653 showNoPGPKeyDialog(false,
654 new DialogInterface.OnClickListener() {
655
656 @Override
657 public void onClick(DialogInterface dialog,
658 int which) {
659 conversation
660 .setNextEncryption(Message.ENCRYPTION_NONE);
661 xmppService.databaseBackend
662 .updateConversation(conversation);
663 message.setEncryption(Message.ENCRYPTION_NONE);
664 xmppService.sendMessage(message);
665 messageSent();
666 }
667 });
668 }
669 } else {
670 if (conversation.getMucOptions().pgpKeysInUse()) {
671 if (!conversation.getMucOptions().everybodyHasKeys()) {
672 Toast warning = Toast
673 .makeText(getActivity(),
674 R.string.missing_public_keys,
675 Toast.LENGTH_LONG);
676 warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
677 warning.show();
678 }
679 activity.encryptTextMessage(message);
680 messageSent();
681 } else {
682 showNoPGPKeyDialog(true,
683 new DialogInterface.OnClickListener() {
684
685 @Override
686 public void onClick(DialogInterface dialog,
687 int which) {
688 conversation
689 .setNextEncryption(Message.ENCRYPTION_NONE);
690 message.setEncryption(Message.ENCRYPTION_NONE);
691 xmppService.databaseBackend
692 .updateConversation(conversation);
693 xmppService.sendMessage(message);
694 messageSent();
695 }
696 });
697 }
698 }
699 } else {
700 activity.showInstallPgpDialog();
701 }
702 }
703
704 public void showNoPGPKeyDialog(boolean plural,
705 DialogInterface.OnClickListener listener) {
706 AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
707 builder.setIconAttribute(android.R.attr.alertDialogIcon);
708 if (plural) {
709 builder.setTitle(getString(R.string.no_pgp_keys));
710 builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
711 } else {
712 builder.setTitle(getString(R.string.no_pgp_key));
713 builder.setMessage(getText(R.string.contact_has_no_pgp_key));
714 }
715 builder.setNegativeButton(getString(R.string.cancel), null);
716 builder.setPositiveButton(getString(R.string.send_unencrypted),
717 listener);
718 builder.create().show();
719 }
720
721 protected void sendOtrMessage(final Message message) {
722 final ConversationActivity activity = (ConversationActivity) getActivity();
723 final XmppConnectionService xmppService = activity.xmppConnectionService;
724 if (conversation.hasValidOtrSession()) {
725 activity.xmppConnectionService.sendMessage(message);
726 messageSent();
727 } else {
728 activity.selectPresence(message.getConversation(),
729 new OnPresenceSelected() {
730
731 @Override
732 public void onPresenceSelected() {
733 message.setPresence(conversation.getNextPresence());
734 xmppService.sendMessage(message);
735 messageSent();
736 }
737 });
738 }
739 }
740
741 public void setText(String text) {
742 this.pastedText = text;
743 }
744
745 public void clearInputField() {
746 this.mEditMessage.setText("");
747 }
748}