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.NoSuchElementException;
 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.Downloadable;
 47import eu.siacs.conversations.entities.DownloadableFile;
 48import eu.siacs.conversations.entities.DownloadablePlaceholder;
 49import eu.siacs.conversations.entities.Message;
 50import eu.siacs.conversations.entities.MucOptions;
 51import eu.siacs.conversations.entities.Presences;
 52import eu.siacs.conversations.services.XmppConnectionService;
 53import eu.siacs.conversations.ui.EditMessage.OnEnterPressed;
 54import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
 55import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
 56import eu.siacs.conversations.ui.adapter.MessageAdapter;
 57import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
 58import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
 59import eu.siacs.conversations.xmpp.jid.Jid;
 60
 61public class ConversationFragment extends Fragment {
 62
 63	protected Conversation conversation;
 64	private OnClickListener leaveMuc = new OnClickListener() {
 65
 66		@Override
 67		public void onClick(View v) {
 68			activity.endConversation(conversation);
 69		}
 70	};
 71	private OnClickListener joinMuc = new OnClickListener() {
 72
 73		@Override
 74		public void onClick(View v) {
 75			activity.xmppConnectionService.joinMuc(conversation);
 76		}
 77	};
 78	private OnClickListener enterPassword = new OnClickListener() {
 79
 80		@Override
 81		public void onClick(View v) {
 82			MucOptions muc = conversation.getMucOptions();
 83			String password = muc.getPassword();
 84			if (password == null) {
 85				password = "";
 86			}
 87			activity.quickPasswordEdit(password, new OnValueEdited() {
 88
 89				@Override
 90				public void onValueEdited(String value) {
 91					activity.xmppConnectionService.providePasswordForMuc(
 92							conversation, value);
 93				}
 94			});
 95		}
 96	};
 97	protected ListView messagesView;
 98	final protected List<Message> messageList = new ArrayList<>();
 99	protected MessageAdapter messageListAdapter;
100	protected Contact contact;
101	private EditMessage mEditMessage;
102	private ImageButton mSendButton;
103	private RelativeLayout snackbar;
104	private TextView snackbarMessage;
105	private TextView snackbarAction;
106	private boolean messagesLoaded = true;
107	private Toast messageLoaderToast;
108
109	private OnScrollListener mOnScrollListener = new OnScrollListener() {
110
111		@Override
112		public void onScrollStateChanged(AbsListView view, int scrollState) {
113			// TODO Auto-generated method stub
114
115		}
116
117		@Override
118		public void onScroll(AbsListView view, int firstVisibleItem,
119				int visibleItemCount, int totalItemCount) {
120			synchronized (ConversationFragment.this.messageList) {
121				if (firstVisibleItem < 5 && messagesLoaded && messageList.size() > 0) {
122					long timestamp = ConversationFragment.this.messageList.get(0).getTimeSent();
123					messagesLoaded = false;
124					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
125						@Override
126						public void onMoreMessagesLoaded(final int count, Conversation conversation) {
127							if (ConversationFragment.this.conversation != conversation) {
128								return;
129							}
130							activity.runOnUiThread(new Runnable() {
131								@Override
132								public void run() {
133									final int oldPosition = messagesView.getFirstVisiblePosition();
134									View v = messagesView.getChildAt(0);
135									final int pxOffset = (v == null) ? 0 : v.getTop();
136									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
137									updateStatusMessages();
138									messageListAdapter.notifyDataSetChanged();
139									if (count != 0) {
140										final int newPosition = oldPosition + count;
141										int offset = 0;
142										try {
143											Message tmpMessage = messageList.get(newPosition);
144
145											while(tmpMessage.wasMergedIntoPrevious()) {
146												offset++;
147												tmpMessage = tmpMessage.prev();
148											}
149										} catch (final IndexOutOfBoundsException ignored) {
150
151										}
152										messagesView.setSelectionFromTop(newPosition - offset, pxOffset);
153										messagesLoaded = true;
154										if (messageLoaderToast != null) {
155											messageLoaderToast.cancel();
156										}
157									}
158								}
159							});
160						}
161
162						@Override
163						public void informUser(final int resId) {
164
165							activity.runOnUiThread(new Runnable() {
166								@Override
167								public void run() {
168									if (messageLoaderToast != null) {
169										messageLoaderToast.cancel();
170									}
171									if (ConversationFragment.this.conversation != conversation) {
172										return;
173									}
174									messageLoaderToast = Toast.makeText(activity,resId,Toast.LENGTH_LONG);
175									messageLoaderToast.show();
176								}
177							});
178
179						}
180					});
181
182				}
183			}
184		}
185	};
186	private IntentSender askForPassphraseIntent = null;
187	protected OnClickListener clickToDecryptListener = new OnClickListener() {
188
189		@Override
190		public void onClick(View v) {
191			if (activity.hasPgp() && askForPassphraseIntent != null) {
192				try {
193					getActivity().startIntentSenderForResult(
194							askForPassphraseIntent,
195							ConversationActivity.REQUEST_DECRYPT_PGP, null, 0,
196							0, 0);
197				} catch (SendIntentException e) {
198					//
199				}
200			}
201		}
202	};
203	protected OnClickListener clickToVerify = new OnClickListener() {
204
205		@Override
206		public void onClick(View v) {
207			activity.verifyOtrSessionDialog(conversation,v);
208		}
209	};
210	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<>();
211	private boolean mDecryptJobRunning = false;
212	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
213
214		@Override
215		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
216			if (actionId == EditorInfo.IME_ACTION_SEND) {
217				InputMethodManager imm = (InputMethodManager) v.getContext()
218					.getSystemService(Context.INPUT_METHOD_SERVICE);
219				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
220				sendMessage();
221				return true;
222			} else {
223				return false;
224			}
225		}
226	};
227	private OnClickListener mSendButtonListener = new OnClickListener() {
228
229		@Override
230		public void onClick(View v) {
231			sendMessage();
232		}
233	};
234	private OnClickListener clickToMuc = new OnClickListener() {
235
236		@Override
237		public void onClick(View v) {
238			Intent intent = new Intent(getActivity(),
239					ConferenceDetailsActivity.class);
240			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
241			intent.putExtra("uuid", conversation.getUuid());
242			startActivity(intent);
243		}
244	};
245	private ConversationActivity activity;
246	private Message selectedMessage;
247
248	private void sendMessage() {
249		if (this.conversation == null) {
250			return;
251		}
252		if (mEditMessage.getText().length() < 1) {
253			if (this.conversation.getMode() == Conversation.MODE_MULTI) {
254				conversation.setNextCounterpart(null);
255				updateChatMsgHint();
256			}
257			return;
258		}
259		Message message = new Message(conversation, mEditMessage.getText()
260				.toString(), conversation.getNextEncryption(activity
261					.forceEncryption()));
262		if (conversation.getMode() == Conversation.MODE_MULTI) {
263			if (conversation.getNextCounterpart() != null) {
264				message.setCounterpart(conversation.getNextCounterpart());
265				message.setType(Message.TYPE_PRIVATE);
266				conversation.setNextCounterpart(null);
267			}
268		}
269		if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_OTR) {
270			sendOtrMessage(message);
271		} else if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_PGP) {
272			sendPgpMessage(message);
273		} else {
274			sendPlainTextMessage(message);
275		}
276	}
277
278	public void updateChatMsgHint() {
279		if (conversation.getMode() == Conversation.MODE_MULTI
280				&& conversation.getNextCounterpart() != null) {
281			this.mEditMessage.setHint(getString(
282						R.string.send_private_message_to,
283						conversation.getNextCounterpart().getResourcepart()));
284		} else {
285			switch (conversation.getNextEncryption(activity.forceEncryption())) {
286				case Message.ENCRYPTION_NONE:
287					mEditMessage
288						.setHint(getString(R.string.send_plain_text_message));
289					break;
290				case Message.ENCRYPTION_OTR:
291					mEditMessage.setHint(getString(R.string.send_otr_message));
292					break;
293				case Message.ENCRYPTION_PGP:
294					mEditMessage.setHint(getString(R.string.send_pgp_message));
295					break;
296				default:
297					break;
298			}
299		}
300	}
301
302	@Override
303	public View onCreateView(final LayoutInflater inflater,
304			ViewGroup container, Bundle savedInstanceState) {
305		final View view = inflater.inflate(R.layout.fragment_conversation,
306				container, false);
307		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
308		mEditMessage.setOnClickListener(new OnClickListener() {
309
310			@Override
311			public void onClick(View v) {
312				activity.hideConversationsOverview();
313			}
314		});
315		mEditMessage.setOnEditorActionListener(mEditorActionListener);
316		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
317
318			@Override
319			public boolean onEnterPressed() {
320				if (activity.enterIsSend()) {
321					sendMessage();
322					return true;
323				} else {
324					return false;
325				}
326			}
327		});
328
329		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
330		mSendButton.setOnClickListener(this.mSendButtonListener);
331
332		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
333		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
334		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
335
336		messagesView = (ListView) view.findViewById(R.id.messages_view);
337		messagesView.setOnScrollListener(mOnScrollListener);
338		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
339		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
340		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
341
342			@Override
343			public void onContactPictureClicked(Message message) {
344				if (message.getStatus() <= Message.STATUS_RECEIVED) {
345					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
346						if (message.getCounterpart() != null) {
347							if (!message.getCounterpart().isBareJid()) {
348								highlightInConference(message.getCounterpart().getResourcepart());
349							} else {
350								highlightInConference(message.getCounterpart().toString());
351							}
352						}
353					} else {
354						Contact contact = message.getConversation()
355							.getContact();
356						if (contact.showInRoster()) {
357							activity.switchToContactDetails(contact);
358						} else {
359							activity.showAddToRosterDialog(message
360									.getConversation());
361						}
362					}
363				} else {
364					Account account = message.getConversation().getAccount();
365					Intent intent = new Intent(activity, EditAccountActivity.class);
366					intent.putExtra("jid", account.getJid().toBareJid().toString());
367					startActivity(intent);
368				}
369			}
370		});
371		messageListAdapter
372			.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
373
374				@Override
375				public void onContactPictureLongClicked(Message message) {
376					if (message.getStatus() <= Message.STATUS_RECEIVED) {
377						if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
378							if (message.getCounterpart() != null) {
379								privateMessageWith(message.getCounterpart());
380							}
381						}
382					} else {
383						activity.showQrCode();
384					}
385				}
386			});
387		messagesView.setAdapter(messageListAdapter);
388
389		registerForContextMenu(messagesView);
390
391		return view;
392	}
393
394	@Override
395	public void onCreateContextMenu(ContextMenu menu, View v,
396			ContextMenuInfo menuInfo) {
397		synchronized (this.messageList) {
398			super.onCreateContextMenu(menu, v, menuInfo);
399			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
400			this.selectedMessage = this.messageList.get(acmi.position);
401			populateContextMenu(menu);
402		}
403	}
404
405	private void populateContextMenu(ContextMenu menu) {
406		final Message m = this.selectedMessage;
407		if (m.getType() != Message.TYPE_STATUS) {
408			activity.getMenuInflater().inflate(R.menu.message_context, menu);
409			menu.setHeaderTitle(R.string.message_options);
410			MenuItem copyText = menu.findItem(R.id.copy_text);
411			MenuItem shareImage = menu.findItem(R.id.share_image);
412			MenuItem sendAgain = menu.findItem(R.id.send_again);
413			MenuItem copyUrl = menu.findItem(R.id.copy_url);
414			MenuItem downloadImage = menu.findItem(R.id.download_image);
415			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
416			if (m.getType() != Message.TYPE_TEXT || m.getDownloadable() != null) {
417				copyText.setVisible(false);
418			}
419			if (m.getType() != Message.TYPE_IMAGE || m.getDownloadable() != null) {
420				shareImage.setVisible(false);
421			}
422			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
423				sendAgain.setVisible(false);
424			}
425			if ((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
426					|| m.getImageParams().url == null) {
427				copyUrl.setVisible(false);
428			}
429			if (m.getType() != Message.TYPE_TEXT
430					|| m.getDownloadable() != null
431					|| !m.bodyContainsDownloadable()) {
432				downloadImage.setVisible(false);
433			}
434			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
435					|| (m.isFileOrImage() && m.getStatus() == Message.STATUS_WAITING))) {
436				cancelTransmission.setVisible(false);
437			}
438		}
439	}
440
441	@Override
442	public boolean onContextItemSelected(MenuItem item) {
443		switch (item.getItemId()) {
444			case R.id.share_image:
445				shareImage(selectedMessage);
446				return true;
447			case R.id.copy_text:
448				copyText(selectedMessage);
449				return true;
450			case R.id.send_again:
451				resendMessage(selectedMessage);
452				return true;
453			case R.id.copy_url:
454				copyUrl(selectedMessage);
455				return true;
456			case R.id.download_image:
457				downloadImage(selectedMessage);
458				return true;
459			case R.id.cancel_transmission:
460				cancelTransmission(selectedMessage);
461				return true;
462			default:
463				return super.onContextItemSelected(item);
464		}
465	}
466
467	private void shareImage(Message message) {
468		Intent shareIntent = new Intent();
469		shareIntent.setAction(Intent.ACTION_SEND);
470		shareIntent.putExtra(Intent.EXTRA_STREAM,
471				activity.xmppConnectionService.getFileBackend()
472				.getJingleFileUri(message));
473		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
474		shareIntent.setType("image/webp");
475		activity.startActivity(Intent.createChooser(shareIntent,
476					getText(R.string.share_with)));
477	}
478
479	private void copyText(Message message) {
480		if (activity.copyTextToClipboard(message.getMergedBody(),
481					R.string.message_text)) {
482			Toast.makeText(activity, R.string.message_copied_to_clipboard,
483					Toast.LENGTH_SHORT).show();
484		}
485	}
486
487	private void resendMessage(Message message) {
488		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
489			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
490			if (!file.exists()) {
491				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
492				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
493				return;
494			}
495		}
496		activity.xmppConnectionService.resendFailedMessages(message);
497	}
498
499	private void copyUrl(Message message) {
500		if (activity.copyTextToClipboard(
501					message.getImageParams().url.toString(), R.string.image_url)) {
502			Toast.makeText(activity, R.string.url_copied_to_clipboard,
503					Toast.LENGTH_SHORT).show();
504					}
505	}
506
507	private void downloadImage(Message message) {
508		activity.xmppConnectionService.getHttpConnectionManager()
509			.createNewConnection(message);
510	}
511
512	private void cancelTransmission(Message message) {
513		Downloadable downloadable = message.getDownloadable();
514		if (downloadable!=null) {
515			downloadable.cancel();
516		} else {
517			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
518		}
519	}
520
521	protected void privateMessageWith(final Jid counterpart) {
522		this.mEditMessage.setText("");
523		this.conversation.setNextCounterpart(counterpart);
524		updateChatMsgHint();
525	}
526
527	protected void highlightInConference(String nick) {
528		String oldString = mEditMessage.getText().toString().trim();
529		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
530			mEditMessage.getText().insert(0, nick + ": ");
531		} else {
532			if (mEditMessage.getText().charAt(
533						mEditMessage.getSelectionStart() - 1) != ' ') {
534				nick = " " + nick;
535						}
536			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
537					nick + " ");
538		}
539	}
540
541	@Override
542	public void onStop() {
543		mDecryptJobRunning = false;
544		super.onStop();
545		if (this.conversation != null) {
546			this.conversation.setNextMessage(mEditMessage.getText().toString());
547		}
548	}
549
550	public void reInit(Conversation conversation) {
551		if (conversation == null) {
552			return;
553		}
554		if (this.conversation != null) {
555			this.conversation.setNextMessage(mEditMessage.getText().toString());
556			this.conversation.trim();
557		}
558		this.activity = (ConversationActivity) getActivity();
559		this.conversation = conversation;
560		this.mDecryptJobRunning = false;
561		this.mEncryptedMessages.clear();
562		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
563			this.conversation.setNextCounterpart(null);
564		}
565		this.mEditMessage.setText("");
566		this.mEditMessage.append(this.conversation.getNextMessage());
567		this.messagesView.invalidateViews();
568		updateMessages();
569		this.messagesLoaded = true;
570		int size = this.messageList.size();
571		if (size > 0) {
572			messagesView.setSelection(size - 1);
573		}
574	}
575
576	public void updateMessages() {
577		synchronized (this.messageList) {
578			if (getView() == null) {
579				return;
580			}
581			hideSnackbar();
582			final ConversationActivity activity = (ConversationActivity) getActivity();
583			if (this.conversation != null) {
584				final Contact contact = this.conversation.getContact();
585				if (this.conversation.isBlocked()) {
586					showSnackbar(R.string.contact_blocked, R.string.unblock,
587							new OnClickListener() {
588								@Override
589								public void onClick(final View v) {
590									v.post(new Runnable() {
591										@Override
592										public void run() {
593											v.setVisibility(View.INVISIBLE);
594										}
595									});
596									if (conversation.isDomainBlocked()) {
597										BlockContactDialog.show(getActivity(), ((ConversationActivity) getActivity()).xmppConnectionService, conversation);
598									} else {
599										((ConversationActivity) getActivity()).unblockConversation(conversation);
600									}
601								}
602							});
603				} else if (this.conversation.isMuted()) {
604					showSnackbar(R.string.notifications_disabled, R.string.enable,
605							new OnClickListener() {
606
607								@Override
608								public void onClick(final View v) {
609									activity.unmuteConversation(conversation);
610								}
611							});
612				} else if (!contact.showInRoster()
613						&& contact
614						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
615					showSnackbar(R.string.contact_added_you, R.string.add_back,
616							new OnClickListener() {
617
618								@Override
619								public void onClick(View v) {
620									activity.xmppConnectionService
621										.createContact(contact);
622									activity.switchToContactDetails(contact);
623								}
624							});
625				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
626					makeFingerprintWarning();
627				} else if (!conversation.getMucOptions().online()
628						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
629					int error = conversation.getMucOptions().getError();
630					switch (error) {
631						case MucOptions.ERROR_NICK_IN_USE:
632							showSnackbar(R.string.nick_in_use, R.string.edit,
633									clickToMuc);
634							break;
635						case MucOptions.ERROR_UNKNOWN:
636							showSnackbar(R.string.conference_not_found,
637									R.string.leave, leaveMuc);
638							break;
639						case MucOptions.ERROR_PASSWORD_REQUIRED:
640							showSnackbar(R.string.conference_requires_password,
641									R.string.enter_password, enterPassword);
642							break;
643						case MucOptions.ERROR_BANNED:
644							showSnackbar(R.string.conference_banned,
645									R.string.leave, leaveMuc);
646							break;
647						case MucOptions.ERROR_MEMBERS_ONLY:
648							showSnackbar(R.string.conference_members_only,
649									R.string.leave, leaveMuc);
650							break;
651						case MucOptions.KICKED_FROM_ROOM:
652							showSnackbar(R.string.conference_kicked, R.string.join,
653									joinMuc);
654							break;
655						default:
656							break;
657					}
658						}
659				conversation.populateWithMessages(ConversationFragment.this.messageList);
660				for (Message message : this.messageList) {
661					if (message.getEncryption() == Message.ENCRYPTION_PGP
662							&& (message.getStatus() == Message.STATUS_RECEIVED || message
663								.getStatus() >= Message.STATUS_SEND)
664							&& message.getDownloadable() == null) {
665						if (!mEncryptedMessages.contains(message)) {
666							mEncryptedMessages.add(message);
667						}
668							}
669				}
670				decryptNext();
671				updateStatusMessages();
672				this.messageListAdapter.notifyDataSetChanged();
673				updateChatMsgHint();
674				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
675					activity.sendReadMarkerIfNecessary(conversation);
676				}
677				this.updateSendButton();
678			}
679		}
680	}
681
682	private void decryptNext() {
683		Message next = this.mEncryptedMessages.peek();
684		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
685
686		if (next != null && engine != null && !mDecryptJobRunning) {
687			mDecryptJobRunning = true;
688			engine.decrypt(next, new UiCallback<Message>() {
689
690				@Override
691				public void userInputRequried(PendingIntent pi, Message message) {
692					mDecryptJobRunning = false;
693					askForPassphraseIntent = pi.getIntentSender();
694					showSnackbar(R.string.openpgp_messages_found,
695							R.string.decrypt, clickToDecryptListener);
696				}
697
698				@Override
699				public void success(Message message) {
700					mDecryptJobRunning = false;
701					try {
702						mEncryptedMessages.remove();
703					} catch (final NoSuchElementException ignored) {
704
705					}
706					activity.xmppConnectionService.updateMessage(message);
707				}
708
709				@Override
710				public void error(int error, Message message) {
711					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
712					mDecryptJobRunning = false;
713					try {
714						mEncryptedMessages.remove();
715					} catch (final NoSuchElementException ignored) {
716
717					}
718					activity.xmppConnectionService.updateConversationUi();
719				}
720			});
721		}
722	}
723
724	private void messageSent() {
725		int size = this.messageList.size();
726		messagesView.setSelection(size - 1);
727		mEditMessage.setText("");
728		updateChatMsgHint();
729	}
730
731	public void updateSendButton() {
732		Conversation c = this.conversation;
733		if (activity.useSendButtonToIndicateStatus() && c != null
734				&& c.getAccount().getStatus() == Account.State.ONLINE) {
735			if (c.getMode() == Conversation.MODE_SINGLE) {
736				switch (c.getContact().getMostAvailableStatus()) {
737					case Presences.CHAT:
738						this.mSendButton
739							.setImageResource(R.drawable.ic_action_send_now_online);
740						break;
741					case Presences.ONLINE:
742						this.mSendButton
743							.setImageResource(R.drawable.ic_action_send_now_online);
744						break;
745					case Presences.AWAY:
746						this.mSendButton
747							.setImageResource(R.drawable.ic_action_send_now_away);
748						break;
749					case Presences.XA:
750						this.mSendButton
751							.setImageResource(R.drawable.ic_action_send_now_away);
752						break;
753					case Presences.DND:
754						this.mSendButton
755							.setImageResource(R.drawable.ic_action_send_now_dnd);
756						break;
757					default:
758						this.mSendButton
759							.setImageResource(R.drawable.ic_action_send_now_offline);
760						break;
761				}
762			} else if (c.getMode() == Conversation.MODE_MULTI) {
763				if (c.getMucOptions().online()) {
764					this.mSendButton
765						.setImageResource(R.drawable.ic_action_send_now_online);
766				} else {
767					this.mSendButton
768						.setImageResource(R.drawable.ic_action_send_now_offline);
769				}
770			} else {
771				this.mSendButton
772					.setImageResource(R.drawable.ic_action_send_now_offline);
773			}
774		} else {
775			this.mSendButton
776				.setImageResource(R.drawable.ic_action_send_now_offline);
777		}
778	}
779
780	protected void updateStatusMessages() {
781		synchronized (this.messageList) {
782			if (conversation.getMode() == Conversation.MODE_SINGLE) {
783				for (int i = this.messageList.size() - 1; i >= 0; --i) {
784					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
785						return;
786					} else {
787						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
788							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
789							return;
790						}
791					}
792				}
793			}
794		}
795	}
796
797	protected void makeFingerprintWarning() {
798		if (conversation.smpRequested()) {
799			showSnackbar(R.string.smp_requested, R.string.verify, new OnClickListener() {
800				@Override
801				public void onClick(View view) {
802					Intent intent = new Intent(activity, VerifyOTRActivity.class);
803					intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
804					intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
805					intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
806					intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
807					startActivity(intent);
808				}
809			});
810		} else if (conversation.hasValidOtrSession() && (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
811				&& (!conversation.isOtrFingerprintVerified())) {
812			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
813				}
814	}
815
816	protected void showSnackbar(final int message, final int action,
817			final OnClickListener clickListener) {
818		snackbar.setVisibility(View.VISIBLE);
819		snackbar.setOnClickListener(null);
820		snackbarMessage.setText(message);
821		snackbarMessage.setOnClickListener(null);
822		snackbarAction.setVisibility(View.VISIBLE);
823		snackbarAction.setText(action);
824		snackbarAction.setOnClickListener(clickListener);
825	}
826
827	protected void hideSnackbar() {
828		snackbar.setVisibility(View.GONE);
829	}
830
831	protected void sendPlainTextMessage(Message message) {
832		ConversationActivity activity = (ConversationActivity) getActivity();
833		activity.xmppConnectionService.sendMessage(message);
834		messageSent();
835	}
836
837	protected void sendPgpMessage(final Message message) {
838		final ConversationActivity activity = (ConversationActivity) getActivity();
839		final XmppConnectionService xmppService = activity.xmppConnectionService;
840		final Contact contact = message.getConversation().getContact();
841		if (activity.hasPgp()) {
842			if (conversation.getMode() == Conversation.MODE_SINGLE) {
843				if (contact.getPgpKeyId() != 0) {
844					xmppService.getPgpEngine().hasKey(contact,
845							new UiCallback<Contact>() {
846
847								@Override
848								public void userInputRequried(PendingIntent pi,
849										Contact contact) {
850									activity.runIntent(
851											pi,
852											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
853								}
854
855								@Override
856								public void success(Contact contact) {
857									messageSent();
858									activity.encryptTextMessage(message);
859								}
860
861								@Override
862								public void error(int error, Contact contact) {
863
864								}
865							});
866
867				} else {
868					showNoPGPKeyDialog(false,
869							new DialogInterface.OnClickListener() {
870
871								@Override
872								public void onClick(DialogInterface dialog,
873										int which) {
874									conversation
875										.setNextEncryption(Message.ENCRYPTION_NONE);
876									xmppService.databaseBackend
877										.updateConversation(conversation);
878									message.setEncryption(Message.ENCRYPTION_NONE);
879									xmppService.sendMessage(message);
880									messageSent();
881								}
882							});
883				}
884			} else {
885				if (conversation.getMucOptions().pgpKeysInUse()) {
886					if (!conversation.getMucOptions().everybodyHasKeys()) {
887						Toast warning = Toast
888							.makeText(getActivity(),
889									R.string.missing_public_keys,
890									Toast.LENGTH_LONG);
891						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
892						warning.show();
893					}
894					activity.encryptTextMessage(message);
895					messageSent();
896				} else {
897					showNoPGPKeyDialog(true,
898							new DialogInterface.OnClickListener() {
899
900								@Override
901								public void onClick(DialogInterface dialog,
902										int which) {
903									conversation
904										.setNextEncryption(Message.ENCRYPTION_NONE);
905									message.setEncryption(Message.ENCRYPTION_NONE);
906									xmppService.databaseBackend
907										.updateConversation(conversation);
908									xmppService.sendMessage(message);
909									messageSent();
910								}
911							});
912				}
913			}
914		} else {
915			activity.showInstallPgpDialog();
916		}
917	}
918
919	public void showNoPGPKeyDialog(boolean plural,
920			DialogInterface.OnClickListener listener) {
921		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
922		builder.setIconAttribute(android.R.attr.alertDialogIcon);
923		if (plural) {
924			builder.setTitle(getString(R.string.no_pgp_keys));
925			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
926		} else {
927			builder.setTitle(getString(R.string.no_pgp_key));
928			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
929		}
930		builder.setNegativeButton(getString(R.string.cancel), null);
931		builder.setPositiveButton(getString(R.string.send_unencrypted),
932				listener);
933		builder.create().show();
934	}
935
936	protected void sendOtrMessage(final Message message) {
937		final ConversationActivity activity = (ConversationActivity) getActivity();
938		final XmppConnectionService xmppService = activity.xmppConnectionService;
939		activity.selectPresence(message.getConversation(),
940				new OnPresenceSelected() {
941
942					@Override
943					public void onPresenceSelected() {
944						message.setCounterpart(conversation.getNextCounterpart());
945						xmppService.sendMessage(message);
946						messageSent();
947					}
948				});
949	}
950
951	public void appendText(String text) {
952		String previous = this.mEditMessage.getText().toString();
953		if (previous.length() != 0 && !previous.endsWith(" ")) {
954			text = " " + text;
955		}
956		this.mEditMessage.append(text);
957	}
958
959	public void clearInputField() {
960		this.mEditMessage.setText("");
961	}
962}