1package eu.siacs.conversations.ui;
  2
  3import android.app.AlertDialog;
  4import android.app.Fragment;
  5import android.app.PendingIntent;
  6import android.content.Context;
  7import android.content.DialogInterface;
  8import android.content.Intent;
  9import android.content.IntentSender;
 10import android.content.IntentSender.SendIntentException;
 11import android.os.Bundle;
 12import android.view.ContextMenu;
 13import android.view.ContextMenu.ContextMenuInfo;
 14import android.view.Gravity;
 15import android.view.KeyEvent;
 16import android.view.LayoutInflater;
 17import android.view.MenuItem;
 18import android.view.View;
 19import android.view.View.OnClickListener;
 20import android.view.ViewGroup;
 21import android.view.inputmethod.EditorInfo;
 22import android.view.inputmethod.InputMethodManager;
 23import android.widget.AbsListView;
 24import android.widget.AbsListView.OnScrollListener;
 25import android.widget.AdapterView;
 26import android.widget.AdapterView.AdapterContextMenuInfo;
 27import android.widget.ImageButton;
 28import android.widget.ListView;
 29import android.widget.RelativeLayout;
 30import android.widget.TextView;
 31import android.widget.TextView.OnEditorActionListener;
 32import android.widget.Toast;
 33
 34import net.java.otr4j.session.SessionStatus;
 35
 36import java.util.ArrayList;
 37import java.util.List;
 38import java.util.Set;
 39import java.util.concurrent.ConcurrentLinkedQueue;
 40
 41import eu.siacs.conversations.R;
 42import eu.siacs.conversations.crypto.PgpEngine;
 43import eu.siacs.conversations.entities.Account;
 44import eu.siacs.conversations.entities.Contact;
 45import eu.siacs.conversations.entities.Conversation;
 46import eu.siacs.conversations.entities.Message;
 47import eu.siacs.conversations.entities.MucOptions;
 48import eu.siacs.conversations.entities.Presences;
 49import eu.siacs.conversations.services.XmppConnectionService;
 50import eu.siacs.conversations.ui.EditMessage.OnEnterPressed;
 51import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
 52import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
 53import eu.siacs.conversations.ui.adapter.MessageAdapter;
 54import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
 55import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
 56import eu.siacs.conversations.utils.UIHelper;
 57
 58public class ConversationFragment extends Fragment {
 59
 60	protected Conversation conversation;
 61	private OnClickListener leaveMuc = new OnClickListener() {
 62
 63		@Override
 64		public void onClick(View v) {
 65			activity.endConversation(conversation);
 66		}
 67	};
 68	private OnClickListener joinMuc = new OnClickListener() {
 69
 70		@Override
 71		public void onClick(View v) {
 72			activity.xmppConnectionService.joinMuc(conversation);
 73		}
 74	};
 75	private OnClickListener enterPassword = new OnClickListener() {
 76
 77		@Override
 78		public void onClick(View v) {
 79			MucOptions muc = conversation.getMucOptions();
 80			String password = muc.getPassword();
 81			if (password == null) {
 82				password = "";
 83			}
 84			activity.quickPasswordEdit(password, new OnValueEdited() {
 85
 86				@Override
 87				public void onValueEdited(String value) {
 88					activity.xmppConnectionService.providePasswordForMuc(
 89							conversation, value);
 90				}
 91			});
 92		}
 93	};
 94	protected ListView messagesView;
 95	protected LayoutInflater inflater;
 96	protected List<Message> messageList = new ArrayList<Message>();
 97	protected MessageAdapter messageListAdapter;
 98	protected Contact contact;
 99	protected String queuedPqpMessage = null;
100	private EditMessage mEditMessage;
101	private ImageButton mSendButton;
102	private RelativeLayout snackbar;
103	private TextView snackbarMessage;
104	private TextView snackbarAction;
105	private boolean messagesLoaded = false;
106	private OnScrollListener mOnScrollListener = new OnScrollListener() {
107
108		@Override
109		public void onScrollStateChanged(AbsListView view, int scrollState) {
110			// TODO Auto-generated method stub
111
112		}
113
114		@Override
115		public void onScroll(AbsListView view, int firstVisibleItem,
116							 int visibleItemCount, int totalItemCount) {
117			if (firstVisibleItem == 0 && messagesLoaded) {
118				long timestamp = messageList.get(0).getTimeSent();
119				messagesLoaded = false;
120				int size = activity.xmppConnectionService.loadMoreMessages(
121						conversation, timestamp);
122				messageList.clear();
123				messageList.addAll(conversation.getMessages());
124				updateStatusMessages();
125				messageListAdapter.notifyDataSetChanged();
126				if (size != 0) {
127					messagesLoaded = true;
128				}
129				messagesView.setSelectionFromTop(size + 1, 0);
130			}
131		}
132	};
133	private IntentSender askForPassphraseIntent = null;
134	protected OnClickListener clickToDecryptListener = new OnClickListener() {
135
136		@Override
137		public void onClick(View v) {
138			if (activity.hasPgp() && askForPassphraseIntent != null) {
139				try {
140					getActivity().startIntentSenderForResult(
141							askForPassphraseIntent,
142							ConversationActivity.REQUEST_DECRYPT_PGP, null, 0,
143							0, 0);
144				} catch (SendIntentException e) {
145					//
146				}
147			}
148		}
149	};
150	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<Message>();
151	private boolean mDecryptJobRunning = false;
152	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
153
154		@Override
155		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
156			if (actionId == EditorInfo.IME_ACTION_SEND) {
157				InputMethodManager imm = (InputMethodManager) v.getContext()
158						.getSystemService(Context.INPUT_METHOD_SERVICE);
159				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
160				sendMessage();
161				return true;
162			} else {
163				return false;
164			}
165		}
166	};
167	private OnClickListener mSendButtonListener = new OnClickListener() {
168
169		@Override
170		public void onClick(View v) {
171			sendMessage();
172		}
173	};
174	private OnClickListener clickToMuc = new OnClickListener() {
175
176		@Override
177		public void onClick(View v) {
178			Intent intent = new Intent(getActivity(),
179					ConferenceDetailsActivity.class);
180			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
181			intent.putExtra("uuid", conversation.getUuid());
182			startActivity(intent);
183		}
184	};
185	private ConversationActivity activity;
186	private Message selectedMessage;
187
188	private void sendMessage() {
189		if (this.conversation == null) {
190			return;
191		}
192		if (mEditMessage.getText().length() < 1) {
193			if (this.conversation.getMode() == Conversation.MODE_MULTI) {
194				conversation.setNextPresence(null);
195				updateChatMsgHint();
196			}
197			return;
198		}
199		Message message = new Message(conversation, mEditMessage.getText()
200				.toString(), conversation.getNextEncryption(activity
201				.forceEncryption()));
202		if (conversation.getMode() == Conversation.MODE_MULTI) {
203			if (conversation.getNextPresence() != null) {
204				message.setPresence(conversation.getNextPresence());
205				message.setType(Message.TYPE_PRIVATE);
206				conversation.setNextPresence(null);
207			}
208		}
209		if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_OTR) {
210			sendOtrMessage(message);
211		} else if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_PGP) {
212			sendPgpMessage(message);
213		} else {
214			sendPlainTextMessage(message);
215		}
216	}
217
218	public void updateChatMsgHint() {
219		if (conversation.getMode() == Conversation.MODE_MULTI
220				&& conversation.getNextPresence() != null) {
221			this.mEditMessage.setHint(getString(
222					R.string.send_private_message_to,
223					conversation.getNextPresence()));
224		} else {
225			switch (conversation.getNextEncryption(activity.forceEncryption())) {
226				case Message.ENCRYPTION_NONE:
227					mEditMessage
228							.setHint(getString(R.string.send_plain_text_message));
229					break;
230				case Message.ENCRYPTION_OTR:
231					mEditMessage.setHint(getString(R.string.send_otr_message));
232					break;
233				case Message.ENCRYPTION_PGP:
234					mEditMessage.setHint(getString(R.string.send_pgp_message));
235					break;
236				default:
237					break;
238			}
239		}
240	}
241
242	@Override
243	public View onCreateView(final LayoutInflater inflater,
244							 ViewGroup container, Bundle savedInstanceState) {
245		final View view = inflater.inflate(R.layout.fragment_conversation,
246				container, false);
247		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
248		mEditMessage.setOnClickListener(new OnClickListener() {
249
250			@Override
251			public void onClick(View v) {
252				activity.hideConversationsOverview();
253			}
254		});
255		mEditMessage.setOnEditorActionListener(mEditorActionListener);
256		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
257
258			@Override
259			public void onEnterPressed() {
260				sendMessage();
261			}
262		});
263
264		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
265		mSendButton.setOnClickListener(this.mSendButtonListener);
266
267		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
268		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
269		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
270
271		messagesView = (ListView) view.findViewById(R.id.messages_view);
272		messagesView.setOnScrollListener(mOnScrollListener);
273		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
274		messageListAdapter = new MessageAdapter(
275				(ConversationActivity) getActivity(), this.messageList);
276		messageListAdapter
277				.setOnContactPictureClicked(new OnContactPictureClicked() {
278
279					@Override
280					public void onContactPictureClicked(Message message) {
281						if (message.getStatus() <= Message.STATUS_RECEIVED) {
282							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
283								if (message.getPresence() != null) {
284									highlightInConference(message.getPresence());
285								} else {
286									highlightInConference(message
287											.getCounterpart());
288								}
289							} else {
290								Contact contact = message.getConversation()
291										.getContact();
292								if (contact.showInRoster()) {
293									activity.switchToContactDetails(contact);
294								} else {
295									activity.showAddToRosterDialog(message
296											.getConversation());
297								}
298							}
299						}  else {
300							Account account = message.getConversation().getAccount();
301							Intent intent = new Intent(activity, EditAccountActivity.class);
302							intent.putExtra("jid", account.getJid());
303							startActivity(intent);
304						}
305					}
306				});
307		messageListAdapter
308				.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
309
310					@Override
311					public void onContactPictureLongClicked(Message message) {
312						if (message.getStatus() <= Message.STATUS_RECEIVED) {
313							if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
314								if (message.getPresence() != null) {
315									privateMessageWith(message.getPresence());
316								} else {
317									privateMessageWith(message.getCounterpart());
318								}
319							}
320						}
321					}
322				});
323		messagesView.setAdapter(messageListAdapter);
324
325		registerForContextMenu(messagesView);
326
327		return view;
328	}
329
330	@Override
331	public void onCreateContextMenu(ContextMenu menu, View v,
332									ContextMenuInfo menuInfo) {
333		super.onCreateContextMenu(menu, v, menuInfo);
334		AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
335		this.selectedMessage = this.messageList.get(acmi.position);
336		populateContextMenu(menu);
337	}
338
339	private void populateContextMenu(ContextMenu menu) {
340		if (this.selectedMessage.getType() != Message.TYPE_STATUS) {
341			activity.getMenuInflater().inflate(R.menu.message_context, menu);
342			menu.setHeaderTitle(R.string.message_options);
343			MenuItem copyText = menu.findItem(R.id.copy_text);
344			MenuItem shareImage = menu.findItem(R.id.share_image);
345			MenuItem sendAgain = menu.findItem(R.id.send_again);
346			MenuItem copyUrl = menu.findItem(R.id.copy_url);
347			MenuItem downloadImage = menu.findItem(R.id.download_image);
348			if (this.selectedMessage.getType() != Message.TYPE_TEXT
349					|| this.selectedMessage.getDownloadable() != null) {
350				copyText.setVisible(false);
351			}
352			if (this.selectedMessage.getType() != Message.TYPE_IMAGE
353					|| this.selectedMessage.getDownloadable() != null) {
354				shareImage.setVisible(false);
355			}
356			if (this.selectedMessage.getStatus() != Message.STATUS_SEND_FAILED) {
357				sendAgain.setVisible(false);
358			}
359			if ((this.selectedMessage.getType() != Message.TYPE_IMAGE && this.selectedMessage
360					.getDownloadable() == null)
361					|| this.selectedMessage.getImageParams().url == null) {
362				copyUrl.setVisible(false);
363			}
364
365			if (this.selectedMessage.getType() != Message.TYPE_TEXT
366					|| this.selectedMessage.getDownloadable() != null
367					|| !this.selectedMessage.bodyContainsDownloadable()) {
368				downloadImage.setVisible(false);
369			}
370		}
371	}
372
373	@Override
374	public boolean onContextItemSelected(MenuItem item) {
375		switch (item.getItemId()) {
376			case R.id.share_image:
377				shareImage(selectedMessage);
378				return true;
379			case R.id.copy_text:
380				copyText(selectedMessage);
381				return true;
382			case R.id.send_again:
383				resendMessage(selectedMessage);
384				return true;
385			case R.id.copy_url:
386				copyUrl(selectedMessage);
387				return true;
388			case R.id.download_image:
389				downloadImage(selectedMessage);
390				return true;
391			default:
392				return super.onContextItemSelected(item);
393		}
394	}
395
396	private void shareImage(Message message) {
397		Intent shareIntent = new Intent();
398		shareIntent.setAction(Intent.ACTION_SEND);
399		shareIntent.putExtra(Intent.EXTRA_STREAM,
400				activity.xmppConnectionService.getFileBackend()
401						.getJingleFileUri(message));
402		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
403		shareIntent.setType("image/webp");
404		activity.startActivity(Intent.createChooser(shareIntent,
405				getText(R.string.share_with)));
406	}
407
408	private void copyText(Message message) {
409		if (activity.copyTextToClipboard(message.getMergedBody(),
410				R.string.message_text)) {
411			Toast.makeText(activity, R.string.message_copied_to_clipboard,
412					Toast.LENGTH_SHORT).show();
413		}
414	}
415
416	private void resendMessage(Message message) {
417		activity.xmppConnectionService.resendFailedMessages(message);
418	}
419
420	private void copyUrl(Message message) {
421		if (activity.copyTextToClipboard(
422				message.getImageParams().url.toString(), R.string.image_url)) {
423			Toast.makeText(activity, R.string.url_copied_to_clipboard,
424					Toast.LENGTH_SHORT).show();
425		}
426	}
427
428	private void downloadImage(Message message) {
429		activity.xmppConnectionService.getHttpConnectionManager()
430				.createNewConnection(message);
431	}
432
433	protected void privateMessageWith(String counterpart) {
434		this.mEditMessage.setText("");
435		this.conversation.setNextPresence(counterpart);
436		updateChatMsgHint();
437	}
438
439	protected void highlightInConference(String nick) {
440		String oldString = mEditMessage.getText().toString().trim();
441		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
442			mEditMessage.getText().insert(0, nick + ": ");
443		} else {
444			if (mEditMessage.getText().charAt(
445					mEditMessage.getSelectionStart() - 1) != ' ') {
446				nick = " " + nick;
447			}
448			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
449					nick + " ");
450		}
451	}
452
453	@Override
454	public void onStop() {
455		mDecryptJobRunning = false;
456		super.onStop();
457		if (this.conversation != null) {
458			this.conversation.setNextMessage(mEditMessage.getText().toString());
459		}
460	}
461
462	public void reInit(Conversation conversation) {
463		if (this.conversation != null) {
464			this.conversation.setNextMessage(mEditMessage.getText().toString());
465		}
466		this.activity = (ConversationActivity) getActivity();
467		this.conversation = conversation;
468		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
469			this.conversation.setNextPresence(null);
470		}
471		this.mEditMessage.setText("");
472		this.mEditMessage.append(this.conversation.getNextMessage());
473		this.messagesView.invalidate();
474		updateMessages();
475	}
476
477	public void updateMessages() {
478		if (getView() == null) {
479			return;
480		}
481		hideSnackbar();
482		final ConversationActivity activity = (ConversationActivity) getActivity();
483		if (this.conversation != null) {
484			final Contact contact = this.conversation.getContact();
485			if (this.conversation.isMuted()) {
486				showSnackbar(R.string.notifications_disabled, R.string.enable,
487						new OnClickListener() {
488
489							@Override
490							public void onClick(View v) {
491								conversation.setMutedTill(0);
492								activity.xmppConnectionService.databaseBackend
493										.updateConversation(conversation);
494								updateMessages();
495							}
496						});
497			} else if (!contact.showInRoster()
498					&& contact
499					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
500				showSnackbar(R.string.contact_added_you, R.string.add_back,
501						new OnClickListener() {
502
503							@Override
504							public void onClick(View v) {
505								activity.xmppConnectionService
506										.createContact(contact);
507								activity.switchToContactDetails(contact);
508							}
509						});
510			}
511			for (Message message : this.conversation.getMessages()) {
512				if (message.getEncryption() == Message.ENCRYPTION_PGP
513						&& (message.getStatus() == Message.STATUS_RECEIVED || message
514						.getStatus() >= Message.STATUS_SEND)
515						&& message.getDownloadable() == null) {
516					if (!mEncryptedMessages.contains(message)) {
517						mEncryptedMessages.add(message);
518					}
519				}
520			}
521			decryptNext();
522			this.messageList.clear();
523			if (this.conversation.getMessages().size() == 0) {
524				messagesLoaded = false;
525			} else {
526				this.messageList.addAll(this.conversation.getMessages());
527				messagesLoaded = true;
528				updateStatusMessages();
529			}
530			this.messageListAdapter.notifyDataSetChanged();
531			if (conversation.getMode() == Conversation.MODE_SINGLE) {
532				if (messageList.size() >= 1) {
533					makeFingerprintWarning();
534				}
535			} else {
536				if (!conversation.getMucOptions().online()
537						&& conversation.getAccount().getStatus() == Account.STATUS_ONLINE) {
538					int error = conversation.getMucOptions().getError();
539					switch (error) {
540						case MucOptions.ERROR_NICK_IN_USE:
541							showSnackbar(R.string.nick_in_use, R.string.edit,
542									clickToMuc);
543							break;
544						case MucOptions.ERROR_ROOM_NOT_FOUND:
545							showSnackbar(R.string.conference_not_found,
546									R.string.leave, leaveMuc);
547							break;
548						case MucOptions.ERROR_PASSWORD_REQUIRED:
549							showSnackbar(R.string.conference_requires_password,
550									R.string.enter_password, enterPassword);
551							break;
552						case MucOptions.ERROR_BANNED:
553							showSnackbar(R.string.conference_banned,
554									R.string.leave, leaveMuc);
555							break;
556						case MucOptions.ERROR_MEMBERS_ONLY:
557							showSnackbar(R.string.conference_members_only,
558									R.string.leave, leaveMuc);
559							break;
560						case MucOptions.KICKED_FROM_ROOM:
561							showSnackbar(R.string.conference_kicked, R.string.join,
562									joinMuc);
563							break;
564						default:
565							break;
566					}
567				}
568			}
569			getActivity().invalidateOptionsMenu();
570			updateChatMsgHint();
571			if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
572				activity.xmppConnectionService.markRead(conversation, true);
573				activity.updateConversationList();
574			}
575			this.updateSendButton();
576		}
577	}
578
579	private void decryptNext() {
580		Message next = this.mEncryptedMessages.peek();
581		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
582
583		if (next != null && engine != null && !mDecryptJobRunning) {
584			mDecryptJobRunning = true;
585			engine.decrypt(next, new UiCallback<Message>() {
586
587				@Override
588				public void userInputRequried(PendingIntent pi, Message message) {
589					mDecryptJobRunning = false;
590					askForPassphraseIntent = pi.getIntentSender();
591					showSnackbar(R.string.openpgp_messages_found,
592							R.string.decrypt, clickToDecryptListener);
593				}
594
595				@Override
596				public void success(Message message) {
597					mDecryptJobRunning = false;
598					mEncryptedMessages.remove();
599					activity.xmppConnectionService.updateMessage(message);
600				}
601
602				@Override
603				public void error(int error, Message message) {
604					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
605					mDecryptJobRunning = false;
606					mEncryptedMessages.remove();
607					activity.xmppConnectionService.updateConversationUi();
608				}
609			});
610		}
611	}
612
613	private void messageSent() {
614		int size = this.messageList.size();
615		messagesView.setSelection(size - 1);
616		mEditMessage.setText("");
617		updateChatMsgHint();
618	}
619
620	public void updateSendButton() {
621		Conversation c = this.conversation;
622		if (activity.useSendButtonToIndicateStatus() && c != null
623				&& c.getAccount().getStatus() == Account.STATUS_ONLINE) {
624			if (c.getMode() == Conversation.MODE_SINGLE) {
625				switch (c.getContact().getMostAvailableStatus()) {
626					case Presences.CHAT:
627						this.mSendButton
628								.setImageResource(R.drawable.ic_action_send_now_online);
629						break;
630					case Presences.ONLINE:
631						this.mSendButton
632								.setImageResource(R.drawable.ic_action_send_now_online);
633						break;
634					case Presences.AWAY:
635						this.mSendButton
636								.setImageResource(R.drawable.ic_action_send_now_away);
637						break;
638					case Presences.XA:
639						this.mSendButton
640								.setImageResource(R.drawable.ic_action_send_now_away);
641						break;
642					case Presences.DND:
643						this.mSendButton
644								.setImageResource(R.drawable.ic_action_send_now_dnd);
645						break;
646					default:
647						this.mSendButton
648								.setImageResource(R.drawable.ic_action_send_now_offline);
649						break;
650				}
651			} else if (c.getMode() == Conversation.MODE_MULTI) {
652				if (c.getMucOptions().online()) {
653					this.mSendButton
654							.setImageResource(R.drawable.ic_action_send_now_online);
655				} else {
656					this.mSendButton
657							.setImageResource(R.drawable.ic_action_send_now_offline);
658				}
659			} else {
660				this.mSendButton
661						.setImageResource(R.drawable.ic_action_send_now_offline);
662			}
663		} else {
664			this.mSendButton
665					.setImageResource(R.drawable.ic_action_send_now_offline);
666		}
667	}
668
669	protected void updateStatusMessages() {
670		if (conversation.getMode() == Conversation.MODE_SINGLE) {
671			for (int i = this.messageList.size() - 1; i >= 0; --i) {
672				if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
673					return;
674				} else {
675					if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
676						this.messageList.add(i + 1,
677								Message.createStatusMessage(conversation));
678						return;
679					}
680				}
681			}
682		}
683	}
684
685	protected void makeFingerprintWarning() {
686		Set<String> knownFingerprints = conversation.getContact()
687				.getOtrFingerprints();
688		if (conversation.hasValidOtrSession()
689				&& (!conversation.isMuted())
690				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED) && (!knownFingerprints
691				.contains(conversation.getOtrFingerprint()))) {
692			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify,
693					new OnClickListener() {
694
695						@Override
696						public void onClick(View v) {
697							if (conversation.getOtrFingerprint() != null) {
698								AlertDialog dialog = UIHelper
699										.getVerifyFingerprintDialog(
700												(ConversationActivity) getActivity(),
701												conversation, snackbar);
702								dialog.show();
703							}
704						}
705					});
706		}
707	}
708
709	protected void showSnackbar(int message, int action,
710								OnClickListener clickListener) {
711		snackbar.setVisibility(View.VISIBLE);
712		snackbar.setOnClickListener(null);
713		snackbarMessage.setText(message);
714		snackbarMessage.setOnClickListener(null);
715		snackbarAction.setText(action);
716		snackbarAction.setOnClickListener(clickListener);
717	}
718
719	protected void hideSnackbar() {
720		snackbar.setVisibility(View.GONE);
721	}
722
723	protected void sendPlainTextMessage(Message message) {
724		ConversationActivity activity = (ConversationActivity) getActivity();
725		activity.xmppConnectionService.sendMessage(message);
726		messageSent();
727	}
728
729	protected void sendPgpMessage(final Message message) {
730		final ConversationActivity activity = (ConversationActivity) getActivity();
731		final XmppConnectionService xmppService = activity.xmppConnectionService;
732		final Contact contact = message.getConversation().getContact();
733		if (activity.hasPgp()) {
734			if (conversation.getMode() == Conversation.MODE_SINGLE) {
735				if (contact.getPgpKeyId() != 0) {
736					xmppService.getPgpEngine().hasKey(contact,
737							new UiCallback<Contact>() {
738
739								@Override
740								public void userInputRequried(PendingIntent pi,
741															  Contact contact) {
742									activity.runIntent(
743											pi,
744											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
745								}
746
747								@Override
748								public void success(Contact contact) {
749									messageSent();
750									activity.encryptTextMessage(message);
751								}
752
753								@Override
754								public void error(int error, Contact contact) {
755
756								}
757							});
758
759				} else {
760					showNoPGPKeyDialog(false,
761							new DialogInterface.OnClickListener() {
762
763								@Override
764								public void onClick(DialogInterface dialog,
765													int which) {
766									conversation
767											.setNextEncryption(Message.ENCRYPTION_NONE);
768									xmppService.databaseBackend
769											.updateConversation(conversation);
770									message.setEncryption(Message.ENCRYPTION_NONE);
771									xmppService.sendMessage(message);
772									messageSent();
773								}
774							});
775				}
776			} else {
777				if (conversation.getMucOptions().pgpKeysInUse()) {
778					if (!conversation.getMucOptions().everybodyHasKeys()) {
779						Toast warning = Toast
780								.makeText(getActivity(),
781										R.string.missing_public_keys,
782										Toast.LENGTH_LONG);
783						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
784						warning.show();
785					}
786					activity.encryptTextMessage(message);
787					messageSent();
788				} else {
789					showNoPGPKeyDialog(true,
790							new DialogInterface.OnClickListener() {
791
792								@Override
793								public void onClick(DialogInterface dialog,
794													int which) {
795									conversation
796											.setNextEncryption(Message.ENCRYPTION_NONE);
797									message.setEncryption(Message.ENCRYPTION_NONE);
798									xmppService.databaseBackend
799											.updateConversation(conversation);
800									xmppService.sendMessage(message);
801									messageSent();
802								}
803							});
804				}
805			}
806		} else {
807			activity.showInstallPgpDialog();
808		}
809	}
810
811	public void showNoPGPKeyDialog(boolean plural,
812								   DialogInterface.OnClickListener listener) {
813		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
814		builder.setIconAttribute(android.R.attr.alertDialogIcon);
815		if (plural) {
816			builder.setTitle(getString(R.string.no_pgp_keys));
817			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
818		} else {
819			builder.setTitle(getString(R.string.no_pgp_key));
820			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
821		}
822		builder.setNegativeButton(getString(R.string.cancel), null);
823		builder.setPositiveButton(getString(R.string.send_unencrypted),
824				listener);
825		builder.create().show();
826	}
827
828	protected void sendOtrMessage(final Message message) {
829		final ConversationActivity activity = (ConversationActivity) getActivity();
830		final XmppConnectionService xmppService = activity.xmppConnectionService;
831		if (conversation.hasValidOtrSession()) {
832			activity.xmppConnectionService.sendMessage(message);
833			messageSent();
834		} else {
835			activity.selectPresence(message.getConversation(),
836					new OnPresenceSelected() {
837
838						@Override
839						public void onPresenceSelected() {
840							message.setPresence(conversation.getNextPresence());
841							xmppService.sendMessage(message);
842							messageSent();
843						}
844					});
845		}
846	}
847
848	public void appendText(String text) {
849		String previous = this.mEditMessage.getText().toString();
850		if (previous.length() != 0 && !previous.endsWith(" ")) {
851			text = " " + text;
852		}
853		this.mEditMessage.append(text);
854	}
855
856	public void clearInputField() {
857		this.mEditMessage.setText("");
858	}
859}