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				if (activity != null) {
325					activity.hideConversationsOverview();
326				}
327			}
328		});
329		mEditMessage.setOnEditorActionListener(mEditorActionListener);
330		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
331
332			@Override
333			public boolean onEnterPressed() {
334				if (activity.enterIsSend()) {
335					sendMessage();
336					return true;
337				} else {
338					return false;
339				}
340			}
341		});
342
343		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
344		mSendButton.setOnClickListener(this.mSendButtonListener);
345
346		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
347		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
348		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
349
350		messagesView = (ListView) view.findViewById(R.id.messages_view);
351		messagesView.setOnScrollListener(mOnScrollListener);
352		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
353		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
354		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
355
356			@Override
357			public void onContactPictureClicked(Message message) {
358				if (message.getStatus() <= Message.STATUS_RECEIVED) {
359					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
360						if (message.getCounterpart() != null) {
361							if (!message.getCounterpart().isBareJid()) {
362								highlightInConference(message.getCounterpart().getResourcepart());
363							} else {
364								highlightInConference(message.getCounterpart().toString());
365							}
366						}
367					} else {
368						activity.switchToContactDetails(message.getContact());
369					}
370				} else {
371					Account account = message.getConversation().getAccount();
372					Intent intent = new Intent(activity, EditAccountActivity.class);
373					intent.putExtra("jid", account.getJid().toBareJid().toString());
374					startActivity(intent);
375				}
376			}
377		});
378		messageListAdapter
379			.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
380
381				@Override
382				public void onContactPictureLongClicked(Message message) {
383					if (message.getStatus() <= Message.STATUS_RECEIVED) {
384						if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
385							if (message.getCounterpart() != null) {
386								privateMessageWith(message.getCounterpart());
387							}
388						}
389					} else {
390						activity.showQrCode();
391					}
392				}
393			});
394		messagesView.setAdapter(messageListAdapter);
395
396		registerForContextMenu(messagesView);
397
398		return view;
399	}
400
401	@Override
402	public void onCreateContextMenu(ContextMenu menu, View v,
403			ContextMenuInfo menuInfo) {
404		synchronized (this.messageList) {
405			super.onCreateContextMenu(menu, v, menuInfo);
406			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
407			this.selectedMessage = this.messageList.get(acmi.position);
408			populateContextMenu(menu);
409		}
410	}
411
412	private void populateContextMenu(ContextMenu menu) {
413		final Message m = this.selectedMessage;
414		if (m.getType() != Message.TYPE_STATUS) {
415			activity.getMenuInflater().inflate(R.menu.message_context, menu);
416			menu.setHeaderTitle(R.string.message_options);
417			MenuItem copyText = menu.findItem(R.id.copy_text);
418			MenuItem shareWith = menu.findItem(R.id.share_with);
419			MenuItem sendAgain = menu.findItem(R.id.send_again);
420			MenuItem copyUrl = menu.findItem(R.id.copy_url);
421			MenuItem downloadImage = menu.findItem(R.id.download_image);
422			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
423			if (m.getType() != Message.TYPE_TEXT || m.getDownloadable() != null) {
424				copyText.setVisible(false);
425			}
426			if (m.getType() == Message.TYPE_TEXT
427					|| m.getType() == Message.TYPE_PRIVATE
428					|| m.getDownloadable() != null) {
429				shareWith.setVisible(false);
430					}
431			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
432				sendAgain.setVisible(false);
433			}
434			if ((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
435					|| m.getImageParams().url == null) {
436				copyUrl.setVisible(false);
437					}
438			if (m.getType() != Message.TYPE_TEXT
439					|| m.getDownloadable() != null
440					|| !m.bodyContainsDownloadable()) {
441				downloadImage.setVisible(false);
442					}
443			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
444						|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
445								|| m.getStatus() == Message.STATUS_OFFERED)))) {
446				cancelTransmission.setVisible(false);
447								}
448		}
449	}
450
451	@Override
452	public boolean onContextItemSelected(MenuItem item) {
453		switch (item.getItemId()) {
454			case R.id.share_with:
455				shareWith(selectedMessage);
456				return true;
457			case R.id.copy_text:
458				copyText(selectedMessage);
459				return true;
460			case R.id.send_again:
461				resendMessage(selectedMessage);
462				return true;
463			case R.id.copy_url:
464				copyUrl(selectedMessage);
465				return true;
466			case R.id.download_image:
467				downloadImage(selectedMessage);
468				return true;
469			case R.id.cancel_transmission:
470				cancelTransmission(selectedMessage);
471				return true;
472			default:
473				return super.onContextItemSelected(item);
474		}
475	}
476
477	private void shareWith(Message message) {
478		Intent shareIntent = new Intent();
479		shareIntent.setAction(Intent.ACTION_SEND);
480		shareIntent.putExtra(Intent.EXTRA_STREAM,
481				activity.xmppConnectionService.getFileBackend()
482				.getJingleFileUri(message));
483		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
484		String path = message.getRelativeFilePath();
485		String mime = path == null ? null :URLConnection.guessContentTypeFromName(path);
486		if (mime == null) {
487			mime = "image/webp";
488		}
489		shareIntent.setType(mime);
490		activity.startActivity(Intent.createChooser(shareIntent,getText(R.string.share_with)));
491	}
492
493	private void copyText(Message message) {
494		if (activity.copyTextToClipboard(message.getMergedBody(),
495					R.string.message_text)) {
496			Toast.makeText(activity, R.string.message_copied_to_clipboard,
497					Toast.LENGTH_SHORT).show();
498		}
499	}
500
501	private void resendMessage(Message message) {
502		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
503			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
504			if (!file.exists()) {
505				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
506				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
507				return;
508			}
509		}
510		activity.xmppConnectionService.resendFailedMessages(message);
511	}
512
513	private void copyUrl(Message message) {
514		if (activity.copyTextToClipboard(
515					message.getImageParams().url.toString(), R.string.image_url)) {
516			Toast.makeText(activity, R.string.url_copied_to_clipboard,
517					Toast.LENGTH_SHORT).show();
518					}
519	}
520
521	private void downloadImage(Message message) {
522		activity.xmppConnectionService.getHttpConnectionManager()
523			.createNewConnection(message);
524	}
525
526	private void cancelTransmission(Message message) {
527		Downloadable downloadable = message.getDownloadable();
528		if (downloadable!=null) {
529			downloadable.cancel();
530		} else {
531			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
532		}
533	}
534
535	protected void privateMessageWith(final Jid counterpart) {
536		this.mEditMessage.setText("");
537		this.conversation.setNextCounterpart(counterpart);
538		updateChatMsgHint();
539	}
540
541	protected void highlightInConference(String nick) {
542		String oldString = mEditMessage.getText().toString().trim();
543		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
544			mEditMessage.getText().insert(0, nick + ": ");
545		} else {
546			if (mEditMessage.getText().charAt(
547						mEditMessage.getSelectionStart() - 1) != ' ') {
548				nick = " " + nick;
549						}
550			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
551					nick + " ");
552		}
553	}
554
555	@Override
556	public void onStop() {
557		mDecryptJobRunning = false;
558		super.onStop();
559		if (this.conversation != null) {
560			this.conversation.setNextMessage(mEditMessage.getText().toString());
561		}
562	}
563
564	public void reInit(Conversation conversation) {
565		if (conversation == null) {
566			return;
567		}
568		if (this.conversation != null) {
569			this.conversation.setNextMessage(mEditMessage.getText().toString());
570			this.conversation.trim();
571		}
572		this.activity = (ConversationActivity) getActivity();
573		this.askForPassphraseIntent = null;
574		this.conversation = conversation;
575		this.mDecryptJobRunning = false;
576		this.mEncryptedMessages.clear();
577		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
578			this.conversation.setNextCounterpart(null);
579		}
580		this.mEditMessage.setText("");
581		this.mEditMessage.append(this.conversation.getNextMessage());
582		this.messagesView.setAdapter(messageListAdapter);
583		updateMessages();
584		this.messagesLoaded = true;
585		int size = this.messageList.size();
586		if (size > 0) {
587			messagesView.setSelection(size - 1);
588		}
589	}
590
591	private OnClickListener mUnblockClickListener = new OnClickListener() {
592		@Override
593		public void onClick(final View v) {
594			v.post(new Runnable() {
595				@Override
596				public void run() {
597					v.setVisibility(View.INVISIBLE);
598				}
599			});
600			if (conversation.isDomainBlocked()) {
601				BlockContactDialog.show(activity, activity.xmppConnectionService, conversation);
602			} else {
603				activity.unblockConversation(conversation);
604			}
605		}
606	};
607
608	private OnClickListener mAddBackClickListener = new OnClickListener() {
609
610		@Override
611		public void onClick(View v) {
612			final Contact contact = conversation == null ? null :conversation.getContact();
613			if (contact != null) {
614				activity.xmppConnectionService.createContact(contact);
615				activity.switchToContactDetails(contact);
616			}
617		}
618	};
619
620	private OnClickListener mUnmuteClickListener = new OnClickListener() {
621
622		@Override
623		public void onClick(final View v) {
624			activity.unmuteConversation(conversation);
625		}
626	};
627
628	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
629		@Override
630		public void onClick(View view) {
631			Intent intent = new Intent(activity, VerifyOTRActivity.class);
632			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
633			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
634			intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
635			intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
636			startActivity(intent);
637		}
638	};
639
640	private void updateSnackBar(final Conversation conversation) {
641		final Account account = conversation.getAccount();
642		final Contact contact = conversation.getContact();
643		final int mode = conversation.getMode();
644		if (conversation.isBlocked()) {
645			showSnackbar(R.string.contact_blocked, R.string.unblock,this.mUnblockClickListener);
646		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
647			showSnackbar(R.string.contact_added_you, R.string.add_back,this.mAddBackClickListener);
648		} else if (mode == Conversation.MODE_MULTI
649				&&!conversation.getMucOptions().online()
650				&& account.getStatus() == Account.State.ONLINE) {
651			switch (conversation.getMucOptions().getError()) {
652				case MucOptions.ERROR_NICK_IN_USE:
653					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
654					break;
655				case MucOptions.ERROR_UNKNOWN:
656					showSnackbar(R.string.conference_not_found, R.string.leave, leaveMuc);
657					break;
658				case MucOptions.ERROR_PASSWORD_REQUIRED:
659					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
660					break;
661				case MucOptions.ERROR_BANNED:
662					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
663					break;
664				case MucOptions.ERROR_MEMBERS_ONLY:
665					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
666					break;
667				case MucOptions.KICKED_FROM_ROOM:
668					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
669					break;
670				default:
671					break;
672			}
673		} else if (askForPassphraseIntent != null ) {
674			showSnackbar(R.string.openpgp_messages_found,R.string.decrypt, clickToDecryptListener);
675		} else if (mode == Conversation.MODE_SINGLE
676				&& conversation.smpRequested()) {
677			showSnackbar(R.string.smp_requested, R.string.verify,this.mAnswerSmpClickListener);
678		} else if (mode == Conversation.MODE_SINGLE
679				&&conversation.hasValidOtrSession()
680				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
681				&& (!conversation.isOtrFingerprintVerified())) {
682			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
683		} else if (conversation.isMuted()) {
684			showSnackbar(R.string.notifications_disabled, R.string.enable,this.mUnmuteClickListener);
685		} else {
686			hideSnackbar();
687		}
688	}
689
690	public void updateMessages() {
691		synchronized (this.messageList) {
692			if (getView() == null) {
693				return;
694			}
695			final ConversationActivity activity = (ConversationActivity) getActivity();
696			if (this.conversation != null) {
697				updateSnackBar(this.conversation);
698				final Contact contact = this.conversation.getContact();
699				if (this.conversation.isBlocked()) {
700
701				} else if (!contact.showInRoster()
702						&& contact
703						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
704
705				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
706					makeFingerprintWarning();
707				} else if (!conversation.getMucOptions().online()
708						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
709
710				} else if (this.conversation.isMuted()) {
711
712				}
713				conversation.populateWithMessages(ConversationFragment.this.messageList);
714				for (final Message message : this.messageList) {
715					if (message.getEncryption() == Message.ENCRYPTION_PGP
716							&& (message.getStatus() == Message.STATUS_RECEIVED || message
717								.getStatus() >= Message.STATUS_SEND)
718							&& message.getDownloadable() == null) {
719						if (!mEncryptedMessages.contains(message)) {
720							mEncryptedMessages.add(message);
721						}
722							}
723				}
724				decryptNext();
725				updateStatusMessages();
726				this.messageListAdapter.notifyDataSetChanged();
727				updateChatMsgHint();
728				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
729					activity.sendReadMarkerIfNecessary(conversation);
730				}
731				this.updateSendButton();
732			}
733		}
734	}
735
736	private void decryptNext() {
737		Message next = this.mEncryptedMessages.peek();
738		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
739
740		if (next != null && engine != null && !mDecryptJobRunning) {
741			mDecryptJobRunning = true;
742			engine.decrypt(next, new UiCallback<Message>() {
743
744				@Override
745				public void userInputRequried(PendingIntent pi, Message message) {
746					mDecryptJobRunning = false;
747					askForPassphraseIntent = pi.getIntentSender();
748					updateSnackBar(conversation);
749				}
750
751				@Override
752				public void success(Message message) {
753					mDecryptJobRunning = false;
754					try {
755						mEncryptedMessages.remove();
756					} catch (final NoSuchElementException ignored) {
757
758					}
759					activity.xmppConnectionService.updateMessage(message);
760				}
761
762				@Override
763				public void error(int error, Message message) {
764					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
765					mDecryptJobRunning = false;
766					try {
767						mEncryptedMessages.remove();
768					} catch (final NoSuchElementException ignored) {
769
770					}
771					activity.xmppConnectionService.updateConversationUi();
772				}
773			});
774		}
775	}
776
777	private void messageSent() {
778		int size = this.messageList.size();
779		messagesView.setSelection(size - 1);
780		mEditMessage.setText("");
781		updateChatMsgHint();
782	}
783
784	public void updateSendButton() {
785		Conversation c = this.conversation;
786		if (activity.useSendButtonToIndicateStatus() && c != null
787				&& c.getAccount().getStatus() == Account.State.ONLINE) {
788			if (c.getMode() == Conversation.MODE_SINGLE) {
789				switch (c.getContact().getMostAvailableStatus()) {
790					case Presences.CHAT:
791						this.mSendButton
792							.setImageResource(R.drawable.ic_action_send_now_online);
793						break;
794					case Presences.ONLINE:
795						this.mSendButton
796							.setImageResource(R.drawable.ic_action_send_now_online);
797						break;
798					case Presences.AWAY:
799						this.mSendButton
800							.setImageResource(R.drawable.ic_action_send_now_away);
801						break;
802					case Presences.XA:
803						this.mSendButton
804							.setImageResource(R.drawable.ic_action_send_now_away);
805						break;
806					case Presences.DND:
807						this.mSendButton
808							.setImageResource(R.drawable.ic_action_send_now_dnd);
809						break;
810					default:
811						this.mSendButton
812							.setImageResource(R.drawable.ic_action_send_now_offline);
813						break;
814				}
815			} else if (c.getMode() == Conversation.MODE_MULTI) {
816				if (c.getMucOptions().online()) {
817					this.mSendButton
818						.setImageResource(R.drawable.ic_action_send_now_online);
819				} else {
820					this.mSendButton
821						.setImageResource(R.drawable.ic_action_send_now_offline);
822				}
823			} else {
824				this.mSendButton
825					.setImageResource(R.drawable.ic_action_send_now_offline);
826			}
827		} else {
828			this.mSendButton
829				.setImageResource(R.drawable.ic_action_send_now_offline);
830		}
831	}
832
833	protected void updateStatusMessages() {
834		synchronized (this.messageList) {
835			if (conversation.getMode() == Conversation.MODE_SINGLE) {
836				for (int i = this.messageList.size() - 1; i >= 0; --i) {
837					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
838						return;
839					} else {
840						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
841							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
842							return;
843						}
844					}
845				}
846			}
847		}
848	}
849
850	protected void makeFingerprintWarning() {
851
852	}
853
854	protected void showSnackbar(final int message, final int action,
855			final OnClickListener clickListener) {
856		snackbar.setVisibility(View.VISIBLE);
857		snackbar.setOnClickListener(null);
858		snackbarMessage.setText(message);
859		snackbarMessage.setOnClickListener(null);
860		snackbarAction.setVisibility(View.VISIBLE);
861		snackbarAction.setText(action);
862		snackbarAction.setOnClickListener(clickListener);
863	}
864
865	protected void hideSnackbar() {
866		snackbar.setVisibility(View.GONE);
867	}
868
869	protected void sendPlainTextMessage(Message message) {
870		ConversationActivity activity = (ConversationActivity) getActivity();
871		activity.xmppConnectionService.sendMessage(message);
872		messageSent();
873	}
874
875	protected void sendPgpMessage(final Message message) {
876		final ConversationActivity activity = (ConversationActivity) getActivity();
877		final XmppConnectionService xmppService = activity.xmppConnectionService;
878		final Contact contact = message.getConversation().getContact();
879		if (activity.hasPgp()) {
880			if (conversation.getMode() == Conversation.MODE_SINGLE) {
881				if (contact.getPgpKeyId() != 0) {
882					xmppService.getPgpEngine().hasKey(contact,
883							new UiCallback<Contact>() {
884
885								@Override
886								public void userInputRequried(PendingIntent pi,
887										Contact contact) {
888									activity.runIntent(
889											pi,
890											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
891								}
892
893								@Override
894								public void success(Contact contact) {
895									messageSent();
896									activity.encryptTextMessage(message);
897								}
898
899								@Override
900								public void error(int error, Contact contact) {
901
902								}
903							});
904
905				} else {
906					showNoPGPKeyDialog(false,
907							new DialogInterface.OnClickListener() {
908
909								@Override
910								public void onClick(DialogInterface dialog,
911										int which) {
912									conversation
913										.setNextEncryption(Message.ENCRYPTION_NONE);
914									xmppService.databaseBackend
915										.updateConversation(conversation);
916									message.setEncryption(Message.ENCRYPTION_NONE);
917									xmppService.sendMessage(message);
918									messageSent();
919								}
920							});
921				}
922			} else {
923				if (conversation.getMucOptions().pgpKeysInUse()) {
924					if (!conversation.getMucOptions().everybodyHasKeys()) {
925						Toast warning = Toast
926							.makeText(getActivity(),
927									R.string.missing_public_keys,
928									Toast.LENGTH_LONG);
929						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
930						warning.show();
931					}
932					activity.encryptTextMessage(message);
933					messageSent();
934				} else {
935					showNoPGPKeyDialog(true,
936							new DialogInterface.OnClickListener() {
937
938								@Override
939								public void onClick(DialogInterface dialog,
940										int which) {
941									conversation
942										.setNextEncryption(Message.ENCRYPTION_NONE);
943									message.setEncryption(Message.ENCRYPTION_NONE);
944									xmppService.databaseBackend
945										.updateConversation(conversation);
946									xmppService.sendMessage(message);
947									messageSent();
948								}
949							});
950				}
951			}
952		} else {
953			activity.showInstallPgpDialog();
954		}
955	}
956
957	public void showNoPGPKeyDialog(boolean plural,
958			DialogInterface.OnClickListener listener) {
959		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
960		builder.setIconAttribute(android.R.attr.alertDialogIcon);
961		if (plural) {
962			builder.setTitle(getString(R.string.no_pgp_keys));
963			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
964		} else {
965			builder.setTitle(getString(R.string.no_pgp_key));
966			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
967		}
968		builder.setNegativeButton(getString(R.string.cancel), null);
969		builder.setPositiveButton(getString(R.string.send_unencrypted),
970				listener);
971		builder.create().show();
972	}
973
974	protected void sendOtrMessage(final Message message) {
975		final ConversationActivity activity = (ConversationActivity) getActivity();
976		final XmppConnectionService xmppService = activity.xmppConnectionService;
977		activity.selectPresence(message.getConversation(),
978				new OnPresenceSelected() {
979
980					@Override
981					public void onPresenceSelected() {
982						message.setCounterpart(conversation.getNextCounterpart());
983						xmppService.sendMessage(message);
984						messageSent();
985					}
986				});
987	}
988
989	public void appendText(String text) {
990		String previous = this.mEditMessage.getText().toString();
991		if (previous.length() != 0 && !previous.endsWith(" ")) {
992			text = " " + text;
993		}
994		this.mEditMessage.append(text);
995	}
996
997}