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.text.InputType;
 13import android.view.ContextMenu;
 14import android.view.ContextMenu.ContextMenuInfo;
 15import android.view.Gravity;
 16import android.view.KeyEvent;
 17import android.view.LayoutInflater;
 18import android.view.MenuItem;
 19import android.view.View;
 20import android.view.View.OnClickListener;
 21import android.view.ViewGroup;
 22import android.view.inputmethod.EditorInfo;
 23import android.view.inputmethod.InputMethodManager;
 24import android.widget.AbsListView;
 25import android.widget.AbsListView.OnScrollListener;
 26import android.widget.AdapterView;
 27import android.widget.AdapterView.AdapterContextMenuInfo;
 28import android.widget.ImageButton;
 29import android.widget.ListView;
 30import android.widget.RelativeLayout;
 31import android.widget.TextView;
 32import android.widget.TextView.OnEditorActionListener;
 33import android.widget.Toast;
 34
 35import net.java.otr4j.session.SessionStatus;
 36
 37import java.net.URLConnection;
 38import java.util.ArrayList;
 39import java.util.List;
 40import java.util.NoSuchElementException;
 41import java.util.concurrent.ConcurrentLinkedQueue;
 42
 43import eu.siacs.conversations.R;
 44import eu.siacs.conversations.crypto.PgpEngine;
 45import eu.siacs.conversations.entities.Account;
 46import eu.siacs.conversations.entities.Contact;
 47import eu.siacs.conversations.entities.Conversation;
 48import eu.siacs.conversations.entities.Downloadable;
 49import eu.siacs.conversations.entities.DownloadableFile;
 50import eu.siacs.conversations.entities.DownloadablePlaceholder;
 51import eu.siacs.conversations.entities.Message;
 52import eu.siacs.conversations.entities.MucOptions;
 53import eu.siacs.conversations.entities.Presences;
 54import eu.siacs.conversations.services.XmppConnectionService;
 55import eu.siacs.conversations.ui.EditMessage.OnEnterPressed;
 56import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
 57import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
 58import eu.siacs.conversations.ui.adapter.MessageAdapter;
 59import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
 60import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
 61import eu.siacs.conversations.xmpp.jid.Jid;
 62
 63public class ConversationFragment extends Fragment {
 64
 65	protected Conversation conversation;
 66	private OnClickListener leaveMuc = new OnClickListener() {
 67
 68		@Override
 69		public void onClick(View v) {
 70			activity.endConversation(conversation);
 71		}
 72	};
 73	private OnClickListener joinMuc = new OnClickListener() {
 74
 75		@Override
 76		public void onClick(View v) {
 77			activity.xmppConnectionService.joinMuc(conversation);
 78		}
 79	};
 80	private OnClickListener enterPassword = new OnClickListener() {
 81
 82		@Override
 83		public void onClick(View v) {
 84			MucOptions muc = conversation.getMucOptions();
 85			String password = muc.getPassword();
 86			if (password == null) {
 87				password = "";
 88			}
 89			activity.quickPasswordEdit(password, new OnValueEdited() {
 90
 91				@Override
 92				public void onValueEdited(String value) {
 93					activity.xmppConnectionService.providePasswordForMuc(
 94							conversation, value);
 95				}
 96			});
 97		}
 98	};
 99	protected ListView messagesView;
100	final protected List<Message> messageList = new ArrayList<>();
101	protected MessageAdapter messageListAdapter;
102	private EditMessage mEditMessage;
103	private ImageButton mSendButton;
104	private RelativeLayout snackbar;
105	private TextView snackbarMessage;
106	private TextView snackbarAction;
107	private boolean messagesLoaded = true;
108	private Toast messageLoaderToast;
109
110	private OnScrollListener mOnScrollListener = new OnScrollListener() {
111
112		@Override
113		public void onScrollStateChanged(AbsListView view, int scrollState) {
114			// TODO Auto-generated method stub
115
116		}
117
118		@Override
119		public void onScroll(AbsListView view, int firstVisibleItem,
120				int visibleItemCount, int totalItemCount) {
121			synchronized (ConversationFragment.this.messageList) {
122				if (firstVisibleItem < 5 && messagesLoaded && messageList.size() > 0) {
123					long timestamp = ConversationFragment.this.messageList.get(0).getTimeSent();
124					messagesLoaded = false;
125					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
126						@Override
127						public void onMoreMessagesLoaded(final int count, Conversation conversation) {
128							if (ConversationFragment.this.conversation != conversation) {
129								return;
130							}
131							activity.runOnUiThread(new Runnable() {
132								@Override
133								public void run() {
134									final int oldPosition = messagesView.getFirstVisiblePosition();
135									View v = messagesView.getChildAt(0);
136									final int pxOffset = (v == null) ? 0 : v.getTop();
137									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
138									updateStatusMessages();
139									messageListAdapter.notifyDataSetChanged();
140									if (count != 0) {
141										final int newPosition = oldPosition + count;
142										int offset = 0;
143										try {
144											Message tmpMessage = messageList.get(newPosition);
145
146											while(tmpMessage.wasMergedIntoPrevious()) {
147												offset++;
148												tmpMessage = tmpMessage.prev();
149											}
150										} catch (final IndexOutOfBoundsException ignored) {
151
152										}
153										messagesView.setSelectionFromTop(newPosition - offset, pxOffset);
154										messagesLoaded = true;
155										if (messageLoaderToast != null) {
156											messageLoaderToast.cancel();
157										}
158									}
159								}
160							});
161						}
162
163						@Override
164						public void informUser(final int resId) {
165
166							activity.runOnUiThread(new Runnable() {
167								@Override
168								public void run() {
169									if (messageLoaderToast != null) {
170										messageLoaderToast.cancel();
171									}
172									if (ConversationFragment.this.conversation != conversation) {
173										return;
174									}
175									messageLoaderToast = Toast.makeText(activity,resId,Toast.LENGTH_LONG);
176									messageLoaderToast.show();
177								}
178							});
179
180						}
181					});
182
183				}
184			}
185		}
186	};
187	private IntentSender askForPassphraseIntent = null;
188	protected OnClickListener clickToDecryptListener = new OnClickListener() {
189
190		@Override
191		public void onClick(View v) {
192			if (activity.hasPgp() && askForPassphraseIntent != null) {
193				try {
194					getActivity().startIntentSenderForResult(
195							askForPassphraseIntent,
196							ConversationActivity.REQUEST_DECRYPT_PGP, null, 0,
197							0, 0);
198					askForPassphraseIntent = null;
199				} catch (SendIntentException e) {
200					//
201				}
202			}
203		}
204	};
205	protected OnClickListener clickToVerify = new OnClickListener() {
206
207		@Override
208		public void onClick(View v) {
209			activity.verifyOtrSessionDialog(conversation,v);
210		}
211	};
212	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<>();
213	private boolean mDecryptJobRunning = false;
214	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
215
216		@Override
217		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
218			if (actionId == EditorInfo.IME_ACTION_SEND) {
219				InputMethodManager imm = (InputMethodManager) v.getContext()
220					.getSystemService(Context.INPUT_METHOD_SERVICE);
221				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
222				sendMessage();
223				return true;
224			} else {
225				return false;
226			}
227		}
228	};
229	private OnClickListener mSendButtonListener = new OnClickListener() {
230
231		@Override
232		public void onClick(View v) {
233			sendMessage();
234		}
235	};
236	private OnClickListener clickToMuc = new OnClickListener() {
237
238		@Override
239		public void onClick(View v) {
240			Intent intent = new Intent(getActivity(),
241					ConferenceDetailsActivity.class);
242			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
243			intent.putExtra("uuid", conversation.getUuid());
244			startActivity(intent);
245		}
246	};
247	private ConversationActivity activity;
248	private Message selectedMessage;
249
250	private void sendMessage() {
251		if (this.conversation == null) {
252			return;
253		}
254		if (mEditMessage.getText().length() < 1) {
255			if (this.conversation.getMode() == Conversation.MODE_MULTI) {
256				conversation.setNextCounterpart(null);
257				updateChatMsgHint();
258			}
259			return;
260		}
261		Message message = new Message(conversation, mEditMessage.getText()
262				.toString(), conversation.getNextEncryption(activity
263					.forceEncryption()));
264		if (conversation.getMode() == Conversation.MODE_MULTI) {
265			if (conversation.getNextCounterpart() != null) {
266				message.setCounterpart(conversation.getNextCounterpart());
267				message.setType(Message.TYPE_PRIVATE);
268				conversation.setNextCounterpart(null);
269			}
270		}
271		if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_OTR) {
272			sendOtrMessage(message);
273		} else if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_PGP) {
274			sendPgpMessage(message);
275		} else {
276			sendPlainTextMessage(message);
277		}
278	}
279
280	public void updateChatMsgHint() {
281		if (conversation.getMode() == Conversation.MODE_MULTI
282				&& conversation.getNextCounterpart() != null) {
283			this.mEditMessage.setHint(getString(
284						R.string.send_private_message_to,
285						conversation.getNextCounterpart().getResourcepart()));
286		} else {
287			switch (conversation.getNextEncryption(activity.forceEncryption())) {
288				case Message.ENCRYPTION_NONE:
289					mEditMessage
290						.setHint(getString(R.string.send_plain_text_message));
291					break;
292				case Message.ENCRYPTION_OTR:
293					mEditMessage.setHint(getString(R.string.send_otr_message));
294					break;
295				case Message.ENCRYPTION_PGP:
296					mEditMessage.setHint(getString(R.string.send_pgp_message));
297					break;
298				default:
299					break;
300			}
301			getActivity().invalidateOptionsMenu();
302		}
303	}
304
305	private void setupIme() {
306		if (((ConversationActivity)getActivity()).usingEnterKey()) {
307			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
308		} else {
309			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);
310		}
311	}
312
313	@Override
314	public View onCreateView(final LayoutInflater inflater,
315			ViewGroup container, Bundle savedInstanceState) {
316		final View view = inflater.inflate(R.layout.fragment_conversation,
317				container, false);
318		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
319		setupIme();
320		mEditMessage.setOnClickListener(new OnClickListener() {
321
322			@Override
323			public void onClick(View v) {
324				activity.hideConversationsOverview();
325			}
326		});
327		mEditMessage.setOnEditorActionListener(mEditorActionListener);
328		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
329
330			@Override
331			public boolean onEnterPressed() {
332				if (activity.enterIsSend()) {
333					sendMessage();
334					return true;
335				} else {
336					return false;
337				}
338			}
339		});
340
341		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
342		mSendButton.setOnClickListener(this.mSendButtonListener);
343
344		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
345		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
346		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
347
348		messagesView = (ListView) view.findViewById(R.id.messages_view);
349		messagesView.setOnScrollListener(mOnScrollListener);
350		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
351		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
352		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
353
354			@Override
355			public void onContactPictureClicked(Message message) {
356				if (message.getStatus() <= Message.STATUS_RECEIVED) {
357					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
358						if (message.getCounterpart() != null) {
359							if (!message.getCounterpart().isBareJid()) {
360								highlightInConference(message.getCounterpart().getResourcepart());
361							} else {
362								highlightInConference(message.getCounterpart().toString());
363							}
364						}
365					} else {
366						activity.switchToContactDetails(message.getContact());
367					}
368				} else {
369					Account account = message.getConversation().getAccount();
370					Intent intent = new Intent(activity, EditAccountActivity.class);
371					intent.putExtra("jid", account.getJid().toBareJid().toString());
372					startActivity(intent);
373				}
374			}
375		});
376		messageListAdapter
377			.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
378
379				@Override
380				public void onContactPictureLongClicked(Message message) {
381					if (message.getStatus() <= Message.STATUS_RECEIVED) {
382						if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
383							if (message.getCounterpart() != null) {
384								privateMessageWith(message.getCounterpart());
385							}
386						}
387					} else {
388						activity.showQrCode();
389					}
390				}
391			});
392		messagesView.setAdapter(messageListAdapter);
393
394		registerForContextMenu(messagesView);
395
396		return view;
397	}
398
399	@Override
400	public void onCreateContextMenu(ContextMenu menu, View v,
401			ContextMenuInfo menuInfo) {
402		synchronized (this.messageList) {
403			super.onCreateContextMenu(menu, v, menuInfo);
404			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
405			this.selectedMessage = this.messageList.get(acmi.position);
406			populateContextMenu(menu);
407		}
408	}
409
410	private void populateContextMenu(ContextMenu menu) {
411		final Message m = this.selectedMessage;
412		if (m.getType() != Message.TYPE_STATUS) {
413			activity.getMenuInflater().inflate(R.menu.message_context, menu);
414			menu.setHeaderTitle(R.string.message_options);
415			MenuItem copyText = menu.findItem(R.id.copy_text);
416			MenuItem shareWith = menu.findItem(R.id.share_with);
417			MenuItem sendAgain = menu.findItem(R.id.send_again);
418			MenuItem copyUrl = menu.findItem(R.id.copy_url);
419			MenuItem downloadImage = menu.findItem(R.id.download_image);
420			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
421			if (m.getType() != Message.TYPE_TEXT || m.getDownloadable() != null) {
422				copyText.setVisible(false);
423			}
424			if (m.getType() == Message.TYPE_TEXT
425					|| m.getType() == Message.TYPE_PRIVATE
426					|| m.getDownloadable() != null) {
427				shareWith.setVisible(false);
428					}
429			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
430				sendAgain.setVisible(false);
431			}
432			if ((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
433					|| m.getImageParams().url == null) {
434				copyUrl.setVisible(false);
435					}
436			if (m.getType() != Message.TYPE_TEXT
437					|| m.getDownloadable() != null
438					|| !m.bodyContainsDownloadable()) {
439				downloadImage.setVisible(false);
440					}
441			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
442						|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
443								|| m.getStatus() == Message.STATUS_OFFERED)))) {
444				cancelTransmission.setVisible(false);
445								}
446		}
447	}
448
449	@Override
450	public boolean onContextItemSelected(MenuItem item) {
451		switch (item.getItemId()) {
452			case R.id.share_with:
453				shareWith(selectedMessage);
454				return true;
455			case R.id.copy_text:
456				copyText(selectedMessage);
457				return true;
458			case R.id.send_again:
459				resendMessage(selectedMessage);
460				return true;
461			case R.id.copy_url:
462				copyUrl(selectedMessage);
463				return true;
464			case R.id.download_image:
465				downloadImage(selectedMessage);
466				return true;
467			case R.id.cancel_transmission:
468				cancelTransmission(selectedMessage);
469				return true;
470			default:
471				return super.onContextItemSelected(item);
472		}
473	}
474
475	private void shareWith(Message message) {
476		Intent shareIntent = new Intent();
477		shareIntent.setAction(Intent.ACTION_SEND);
478		shareIntent.putExtra(Intent.EXTRA_STREAM,
479				activity.xmppConnectionService.getFileBackend()
480				.getJingleFileUri(message));
481		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
482		String path = message.getRelativeFilePath();
483		String mime = path == null ? null :URLConnection.guessContentTypeFromName(path);
484		if (mime == null) {
485			mime = "image/webp";
486		}
487		shareIntent.setType(mime);
488		activity.startActivity(Intent.createChooser(shareIntent,getText(R.string.share_with)));
489	}
490
491	private void copyText(Message message) {
492		if (activity.copyTextToClipboard(message.getMergedBody(),
493					R.string.message_text)) {
494			Toast.makeText(activity, R.string.message_copied_to_clipboard,
495					Toast.LENGTH_SHORT).show();
496		}
497	}
498
499	private void resendMessage(Message message) {
500		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
501			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
502			if (!file.exists()) {
503				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
504				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
505				return;
506			}
507		}
508		activity.xmppConnectionService.resendFailedMessages(message);
509	}
510
511	private void copyUrl(Message message) {
512		if (activity.copyTextToClipboard(
513					message.getImageParams().url.toString(), R.string.image_url)) {
514			Toast.makeText(activity, R.string.url_copied_to_clipboard,
515					Toast.LENGTH_SHORT).show();
516					}
517	}
518
519	private void downloadImage(Message message) {
520		activity.xmppConnectionService.getHttpConnectionManager()
521			.createNewConnection(message);
522	}
523
524	private void cancelTransmission(Message message) {
525		Downloadable downloadable = message.getDownloadable();
526		if (downloadable!=null) {
527			downloadable.cancel();
528		} else {
529			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
530		}
531	}
532
533	protected void privateMessageWith(final Jid counterpart) {
534		this.mEditMessage.setText("");
535		this.conversation.setNextCounterpart(counterpart);
536		updateChatMsgHint();
537	}
538
539	protected void highlightInConference(String nick) {
540		String oldString = mEditMessage.getText().toString().trim();
541		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
542			mEditMessage.getText().insert(0, nick + ": ");
543		} else {
544			if (mEditMessage.getText().charAt(
545						mEditMessage.getSelectionStart() - 1) != ' ') {
546				nick = " " + nick;
547						}
548			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
549					nick + " ");
550		}
551	}
552
553	@Override
554	public void onStop() {
555		mDecryptJobRunning = false;
556		super.onStop();
557		if (this.conversation != null) {
558			this.conversation.setNextMessage(mEditMessage.getText().toString());
559		}
560	}
561
562	public void reInit(Conversation conversation) {
563		if (conversation == null) {
564			return;
565		}
566		if (this.conversation != null) {
567			this.conversation.setNextMessage(mEditMessage.getText().toString());
568			this.conversation.trim();
569		}
570		this.activity = (ConversationActivity) getActivity();
571		this.conversation = conversation;
572		this.mDecryptJobRunning = false;
573		this.mEncryptedMessages.clear();
574		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
575			this.conversation.setNextCounterpart(null);
576		}
577		this.mEditMessage.setText("");
578		this.mEditMessage.append(this.conversation.getNextMessage());
579		this.messagesView.invalidateViews();
580		updateMessages();
581		this.messagesLoaded = true;
582		int size = this.messageList.size();
583		if (size > 0) {
584			messagesView.setSelection(size - 1);
585		}
586	}
587
588	private OnClickListener mUnblockClickListener = new OnClickListener() {
589		@Override
590		public void onClick(final View v) {
591			v.post(new Runnable() {
592				@Override
593				public void run() {
594					v.setVisibility(View.INVISIBLE);
595				}
596			});
597			if (conversation.isDomainBlocked()) {
598				BlockContactDialog.show(activity, activity.xmppConnectionService, conversation);
599			} else {
600				activity.unblockConversation(conversation);
601			}
602		}
603	};
604
605	private OnClickListener mAddBackClickListener = new OnClickListener() {
606
607		@Override
608		public void onClick(View v) {
609			final Contact contact = conversation == null ? null :conversation.getContact();
610			if (contact != null) {
611				activity.xmppConnectionService.createContact(contact);
612				activity.switchToContactDetails(contact);
613			}
614		}
615	};
616
617	private OnClickListener mUnmuteClickListener = new OnClickListener() {
618
619		@Override
620		public void onClick(final View v) {
621			activity.unmuteConversation(conversation);
622		}
623	};
624
625	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
626		@Override
627		public void onClick(View view) {
628			Intent intent = new Intent(activity, VerifyOTRActivity.class);
629			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
630			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
631			intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
632			intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
633			startActivity(intent);
634		}
635	};
636
637	private void updateSnackBar(final Conversation conversation) {
638		final Account account = conversation.getAccount();
639		final Contact contact = conversation.getContact();
640		final int mode = conversation.getMode();
641		if (conversation.isBlocked()) {
642			showSnackbar(R.string.contact_blocked, R.string.unblock,this.mUnblockClickListener);
643		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
644			showSnackbar(R.string.contact_added_you, R.string.add_back,this.mAddBackClickListener);
645		} else if (mode == Conversation.MODE_MULTI
646				&&!conversation.getMucOptions().online()
647				&& account.getStatus() == Account.State.ONLINE) {
648			switch (conversation.getMucOptions().getError()) {
649				case MucOptions.ERROR_NICK_IN_USE:
650					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
651					break;
652				case MucOptions.ERROR_UNKNOWN:
653					showSnackbar(R.string.conference_not_found, R.string.leave, leaveMuc);
654					break;
655				case MucOptions.ERROR_PASSWORD_REQUIRED:
656					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
657					break;
658				case MucOptions.ERROR_BANNED:
659					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
660					break;
661				case MucOptions.ERROR_MEMBERS_ONLY:
662					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
663					break;
664				case MucOptions.KICKED_FROM_ROOM:
665					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
666					break;
667				default:
668					break;
669			}
670		} else if (askForPassphraseIntent != null ) {
671			showSnackbar(R.string.openpgp_messages_found,R.string.decrypt, clickToDecryptListener);
672		} else if (mode == Conversation.MODE_SINGLE
673				&& conversation.smpRequested()) {
674			showSnackbar(R.string.smp_requested, R.string.verify,this.mAnswerSmpClickListener);
675		} else if (mode == Conversation.MODE_SINGLE
676				&&conversation.hasValidOtrSession()
677				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
678				&& (!conversation.isOtrFingerprintVerified())) {
679			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
680		} else if (conversation.isMuted()) {
681			showSnackbar(R.string.notifications_disabled, R.string.enable,this.mUnmuteClickListener);
682		} else {
683			hideSnackbar();
684		}
685	}
686
687	public void updateMessages() {
688		synchronized (this.messageList) {
689			if (getView() == null) {
690				return;
691			}
692			final ConversationActivity activity = (ConversationActivity) getActivity();
693			if (this.conversation != null) {
694				updateSnackBar(this.conversation);
695				final Contact contact = this.conversation.getContact();
696				if (this.conversation.isBlocked()) {
697
698				} else if (!contact.showInRoster()
699						&& contact
700						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
701
702				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
703					makeFingerprintWarning();
704				} else if (!conversation.getMucOptions().online()
705						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
706
707				} else if (this.conversation.isMuted()) {
708
709				}
710				conversation.populateWithMessages(ConversationFragment.this.messageList);
711				for (final Message message : this.messageList) {
712					if (message.getEncryption() == Message.ENCRYPTION_PGP
713							&& (message.getStatus() == Message.STATUS_RECEIVED || message
714								.getStatus() >= Message.STATUS_SEND)
715							&& message.getDownloadable() == null) {
716						if (!mEncryptedMessages.contains(message)) {
717							mEncryptedMessages.add(message);
718						}
719							}
720				}
721				decryptNext();
722				updateStatusMessages();
723				this.messageListAdapter.notifyDataSetChanged();
724				updateChatMsgHint();
725				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
726					activity.sendReadMarkerIfNecessary(conversation);
727				}
728				this.updateSendButton();
729			}
730		}
731	}
732
733	private void decryptNext() {
734		Message next = this.mEncryptedMessages.peek();
735		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
736
737		if (next != null && engine != null && !mDecryptJobRunning) {
738			mDecryptJobRunning = true;
739			engine.decrypt(next, new UiCallback<Message>() {
740
741				@Override
742				public void userInputRequried(PendingIntent pi, Message message) {
743					mDecryptJobRunning = false;
744					askForPassphraseIntent = pi.getIntentSender();
745					updateSnackBar(conversation);
746				}
747
748				@Override
749				public void success(Message message) {
750					mDecryptJobRunning = false;
751					try {
752						mEncryptedMessages.remove();
753					} catch (final NoSuchElementException ignored) {
754
755					}
756					activity.xmppConnectionService.updateMessage(message);
757				}
758
759				@Override
760				public void error(int error, Message message) {
761					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
762					mDecryptJobRunning = false;
763					try {
764						mEncryptedMessages.remove();
765					} catch (final NoSuchElementException ignored) {
766
767					}
768					activity.xmppConnectionService.updateConversationUi();
769				}
770			});
771		}
772	}
773
774	private void messageSent() {
775		int size = this.messageList.size();
776		messagesView.setSelection(size - 1);
777		mEditMessage.setText("");
778		updateChatMsgHint();
779	}
780
781	public void updateSendButton() {
782		Conversation c = this.conversation;
783		if (activity.useSendButtonToIndicateStatus() && c != null
784				&& c.getAccount().getStatus() == Account.State.ONLINE) {
785			if (c.getMode() == Conversation.MODE_SINGLE) {
786				switch (c.getContact().getMostAvailableStatus()) {
787					case Presences.CHAT:
788						this.mSendButton
789							.setImageResource(R.drawable.ic_action_send_now_online);
790						break;
791					case Presences.ONLINE:
792						this.mSendButton
793							.setImageResource(R.drawable.ic_action_send_now_online);
794						break;
795					case Presences.AWAY:
796						this.mSendButton
797							.setImageResource(R.drawable.ic_action_send_now_away);
798						break;
799					case Presences.XA:
800						this.mSendButton
801							.setImageResource(R.drawable.ic_action_send_now_away);
802						break;
803					case Presences.DND:
804						this.mSendButton
805							.setImageResource(R.drawable.ic_action_send_now_dnd);
806						break;
807					default:
808						this.mSendButton
809							.setImageResource(R.drawable.ic_action_send_now_offline);
810						break;
811				}
812			} else if (c.getMode() == Conversation.MODE_MULTI) {
813				if (c.getMucOptions().online()) {
814					this.mSendButton
815						.setImageResource(R.drawable.ic_action_send_now_online);
816				} else {
817					this.mSendButton
818						.setImageResource(R.drawable.ic_action_send_now_offline);
819				}
820			} else {
821				this.mSendButton
822					.setImageResource(R.drawable.ic_action_send_now_offline);
823			}
824		} else {
825			this.mSendButton
826				.setImageResource(R.drawable.ic_action_send_now_offline);
827		}
828	}
829
830	protected void updateStatusMessages() {
831		synchronized (this.messageList) {
832			if (conversation.getMode() == Conversation.MODE_SINGLE) {
833				for (int i = this.messageList.size() - 1; i >= 0; --i) {
834					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
835						return;
836					} else {
837						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
838							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
839							return;
840						}
841					}
842				}
843			}
844		}
845	}
846
847	protected void makeFingerprintWarning() {
848
849	}
850
851	protected void showSnackbar(final int message, final int action,
852			final OnClickListener clickListener) {
853		snackbar.setVisibility(View.VISIBLE);
854		snackbar.setOnClickListener(null);
855		snackbarMessage.setText(message);
856		snackbarMessage.setOnClickListener(null);
857		snackbarAction.setVisibility(View.VISIBLE);
858		snackbarAction.setText(action);
859		snackbarAction.setOnClickListener(clickListener);
860	}
861
862	protected void hideSnackbar() {
863		snackbar.setVisibility(View.GONE);
864	}
865
866	protected void sendPlainTextMessage(Message message) {
867		ConversationActivity activity = (ConversationActivity) getActivity();
868		activity.xmppConnectionService.sendMessage(message);
869		messageSent();
870	}
871
872	protected void sendPgpMessage(final Message message) {
873		final ConversationActivity activity = (ConversationActivity) getActivity();
874		final XmppConnectionService xmppService = activity.xmppConnectionService;
875		final Contact contact = message.getConversation().getContact();
876		if (activity.hasPgp()) {
877			if (conversation.getMode() == Conversation.MODE_SINGLE) {
878				if (contact.getPgpKeyId() != 0) {
879					xmppService.getPgpEngine().hasKey(contact,
880							new UiCallback<Contact>() {
881
882								@Override
883								public void userInputRequried(PendingIntent pi,
884										Contact contact) {
885									activity.runIntent(
886											pi,
887											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
888								}
889
890								@Override
891								public void success(Contact contact) {
892									messageSent();
893									activity.encryptTextMessage(message);
894								}
895
896								@Override
897								public void error(int error, Contact contact) {
898
899								}
900							});
901
902				} else {
903					showNoPGPKeyDialog(false,
904							new DialogInterface.OnClickListener() {
905
906								@Override
907								public void onClick(DialogInterface dialog,
908										int which) {
909									conversation
910										.setNextEncryption(Message.ENCRYPTION_NONE);
911									xmppService.databaseBackend
912										.updateConversation(conversation);
913									message.setEncryption(Message.ENCRYPTION_NONE);
914									xmppService.sendMessage(message);
915									messageSent();
916								}
917							});
918				}
919			} else {
920				if (conversation.getMucOptions().pgpKeysInUse()) {
921					if (!conversation.getMucOptions().everybodyHasKeys()) {
922						Toast warning = Toast
923							.makeText(getActivity(),
924									R.string.missing_public_keys,
925									Toast.LENGTH_LONG);
926						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
927						warning.show();
928					}
929					activity.encryptTextMessage(message);
930					messageSent();
931				} else {
932					showNoPGPKeyDialog(true,
933							new DialogInterface.OnClickListener() {
934
935								@Override
936								public void onClick(DialogInterface dialog,
937										int which) {
938									conversation
939										.setNextEncryption(Message.ENCRYPTION_NONE);
940									message.setEncryption(Message.ENCRYPTION_NONE);
941									xmppService.databaseBackend
942										.updateConversation(conversation);
943									xmppService.sendMessage(message);
944									messageSent();
945								}
946							});
947				}
948			}
949		} else {
950			activity.showInstallPgpDialog();
951		}
952	}
953
954	public void showNoPGPKeyDialog(boolean plural,
955			DialogInterface.OnClickListener listener) {
956		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
957		builder.setIconAttribute(android.R.attr.alertDialogIcon);
958		if (plural) {
959			builder.setTitle(getString(R.string.no_pgp_keys));
960			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
961		} else {
962			builder.setTitle(getString(R.string.no_pgp_key));
963			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
964		}
965		builder.setNegativeButton(getString(R.string.cancel), null);
966		builder.setPositiveButton(getString(R.string.send_unencrypted),
967				listener);
968		builder.create().show();
969	}
970
971	protected void sendOtrMessage(final Message message) {
972		final ConversationActivity activity = (ConversationActivity) getActivity();
973		final XmppConnectionService xmppService = activity.xmppConnectionService;
974		activity.selectPresence(message.getConversation(),
975				new OnPresenceSelected() {
976
977					@Override
978					public void onPresenceSelected() {
979						message.setCounterpart(conversation.getNextCounterpart());
980						xmppService.sendMessage(message);
981						messageSent();
982					}
983				});
984	}
985
986	public void appendText(String text) {
987		String previous = this.mEditMessage.getText().toString();
988		if (previous.length() != 0 && !previous.endsWith(" ")) {
989			text = " " + text;
990		}
991		this.mEditMessage.append(text);
992	}
993
994}