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.getType() != Message.TYPE_PRIVATE)
424					|| m.getDownloadable() != null) {
425				copyText.setVisible(false);
426			}
427			if (m.getType() == Message.TYPE_TEXT
428					|| m.getType() == Message.TYPE_PRIVATE
429					|| m.getDownloadable() != null) {
430				shareWith.setVisible(false);
431					}
432			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
433				sendAgain.setVisible(false);
434			}
435			if ((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
436					|| m.getImageParams().url == null) {
437				copyUrl.setVisible(false);
438					}
439			if (m.getType() != Message.TYPE_TEXT
440					|| m.getDownloadable() != null
441					|| !m.bodyContainsDownloadable()) {
442				downloadImage.setVisible(false);
443					}
444			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
445						|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
446								|| m.getStatus() == Message.STATUS_OFFERED)))) {
447				cancelTransmission.setVisible(false);
448								}
449		}
450	}
451
452	@Override
453	public boolean onContextItemSelected(MenuItem item) {
454		switch (item.getItemId()) {
455			case R.id.share_with:
456				shareWith(selectedMessage);
457				return true;
458			case R.id.copy_text:
459				copyText(selectedMessage);
460				return true;
461			case R.id.send_again:
462				resendMessage(selectedMessage);
463				return true;
464			case R.id.copy_url:
465				copyUrl(selectedMessage);
466				return true;
467			case R.id.download_image:
468				downloadImage(selectedMessage);
469				return true;
470			case R.id.cancel_transmission:
471				cancelTransmission(selectedMessage);
472				return true;
473			default:
474				return super.onContextItemSelected(item);
475		}
476	}
477
478	private void shareWith(Message message) {
479		Intent shareIntent = new Intent();
480		shareIntent.setAction(Intent.ACTION_SEND);
481		shareIntent.putExtra(Intent.EXTRA_STREAM,
482				activity.xmppConnectionService.getFileBackend()
483				.getJingleFileUri(message));
484		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
485		String path = message.getRelativeFilePath();
486		String mime = path == null ? null :URLConnection.guessContentTypeFromName(path);
487		if (mime == null) {
488			mime = "image/webp";
489		}
490		shareIntent.setType(mime);
491		activity.startActivity(Intent.createChooser(shareIntent,getText(R.string.share_with)));
492	}
493
494	private void copyText(Message message) {
495		if (activity.copyTextToClipboard(message.getMergedBody(),
496					R.string.message_text)) {
497			Toast.makeText(activity, R.string.message_copied_to_clipboard,
498					Toast.LENGTH_SHORT).show();
499		}
500	}
501
502	private void resendMessage(Message message) {
503		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
504			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
505			if (!file.exists()) {
506				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
507				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
508				return;
509			}
510		}
511		activity.xmppConnectionService.resendFailedMessages(message);
512	}
513
514	private void copyUrl(Message message) {
515		if (activity.copyTextToClipboard(
516					message.getImageParams().url.toString(), R.string.image_url)) {
517			Toast.makeText(activity, R.string.url_copied_to_clipboard,
518					Toast.LENGTH_SHORT).show();
519					}
520	}
521
522	private void downloadImage(Message message) {
523		activity.xmppConnectionService.getHttpConnectionManager()
524			.createNewConnection(message);
525	}
526
527	private void cancelTransmission(Message message) {
528		Downloadable downloadable = message.getDownloadable();
529		if (downloadable!=null) {
530			downloadable.cancel();
531		} else {
532			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
533		}
534	}
535
536	protected void privateMessageWith(final Jid counterpart) {
537		this.mEditMessage.setText("");
538		this.conversation.setNextCounterpart(counterpart);
539		updateChatMsgHint();
540	}
541
542	protected void highlightInConference(String nick) {
543		String oldString = mEditMessage.getText().toString().trim();
544		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
545			mEditMessage.getText().insert(0, nick + ": ");
546		} else {
547			if (mEditMessage.getText().charAt(
548						mEditMessage.getSelectionStart() - 1) != ' ') {
549				nick = " " + nick;
550						}
551			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
552					nick + " ");
553		}
554	}
555
556	@Override
557	public void onStop() {
558		mDecryptJobRunning = false;
559		super.onStop();
560		if (this.conversation != null) {
561			this.conversation.setNextMessage(mEditMessage.getText().toString());
562		}
563	}
564
565	public void reInit(Conversation conversation) {
566		if (conversation == null) {
567			return;
568		}
569		if (this.conversation != null) {
570			this.conversation.setNextMessage(mEditMessage.getText().toString());
571			this.conversation.trim();
572		}
573		this.activity = (ConversationActivity) getActivity();
574		this.askForPassphraseIntent = null;
575		this.conversation = conversation;
576		this.mDecryptJobRunning = false;
577		this.mEncryptedMessages.clear();
578		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
579			this.conversation.setNextCounterpart(null);
580		}
581		this.mEditMessage.setText("");
582		this.mEditMessage.append(this.conversation.getNextMessage());
583		this.messagesView.setAdapter(messageListAdapter);
584		updateMessages();
585		this.messagesLoaded = true;
586		int size = this.messageList.size();
587		if (size > 0) {
588			messagesView.setSelection(size - 1);
589		}
590	}
591
592	private OnClickListener mUnblockClickListener = new OnClickListener() {
593		@Override
594		public void onClick(final View v) {
595			v.post(new Runnable() {
596				@Override
597				public void run() {
598					v.setVisibility(View.INVISIBLE);
599				}
600			});
601			if (conversation.isDomainBlocked()) {
602				BlockContactDialog.show(activity, activity.xmppConnectionService, conversation);
603			} else {
604				activity.unblockConversation(conversation);
605			}
606		}
607	};
608
609	private OnClickListener mAddBackClickListener = new OnClickListener() {
610
611		@Override
612		public void onClick(View v) {
613			final Contact contact = conversation == null ? null :conversation.getContact();
614			if (contact != null) {
615				activity.xmppConnectionService.createContact(contact);
616				activity.switchToContactDetails(contact);
617			}
618		}
619	};
620
621	private OnClickListener mUnmuteClickListener = new OnClickListener() {
622
623		@Override
624		public void onClick(final View v) {
625			activity.unmuteConversation(conversation);
626		}
627	};
628
629	private OnClickListener mAnswerSmpClickListener = new OnClickListener() {
630		@Override
631		public void onClick(View view) {
632			Intent intent = new Intent(activity, VerifyOTRActivity.class);
633			intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
634			intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
635			intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
636			intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
637			startActivity(intent);
638		}
639	};
640
641	private void updateSnackBar(final Conversation conversation) {
642		final Account account = conversation.getAccount();
643		final Contact contact = conversation.getContact();
644		final int mode = conversation.getMode();
645		if (conversation.isBlocked()) {
646			showSnackbar(R.string.contact_blocked, R.string.unblock,this.mUnblockClickListener);
647		} else if (!contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
648			showSnackbar(R.string.contact_added_you, R.string.add_back,this.mAddBackClickListener);
649		} else if (mode == Conversation.MODE_MULTI
650				&&!conversation.getMucOptions().online()
651				&& account.getStatus() == Account.State.ONLINE) {
652			switch (conversation.getMucOptions().getError()) {
653				case MucOptions.ERROR_NICK_IN_USE:
654					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
655					break;
656				case MucOptions.ERROR_UNKNOWN:
657					showSnackbar(R.string.conference_not_found, R.string.leave, leaveMuc);
658					break;
659				case MucOptions.ERROR_PASSWORD_REQUIRED:
660					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
661					break;
662				case MucOptions.ERROR_BANNED:
663					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
664					break;
665				case MucOptions.ERROR_MEMBERS_ONLY:
666					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
667					break;
668				case MucOptions.KICKED_FROM_ROOM:
669					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
670					break;
671				default:
672					break;
673			}
674		} else if (askForPassphraseIntent != null ) {
675			showSnackbar(R.string.openpgp_messages_found,R.string.decrypt, clickToDecryptListener);
676		} else if (mode == Conversation.MODE_SINGLE
677				&& conversation.smpRequested()) {
678			showSnackbar(R.string.smp_requested, R.string.verify,this.mAnswerSmpClickListener);
679		} else if (mode == Conversation.MODE_SINGLE
680				&&conversation.hasValidOtrSession()
681				&& (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
682				&& (!conversation.isOtrFingerprintVerified())) {
683			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
684		} else if (conversation.isMuted()) {
685			showSnackbar(R.string.notifications_disabled, R.string.enable,this.mUnmuteClickListener);
686		} else {
687			hideSnackbar();
688		}
689	}
690
691	public void updateMessages() {
692		synchronized (this.messageList) {
693			if (getView() == null) {
694				return;
695			}
696			final ConversationActivity activity = (ConversationActivity) getActivity();
697			if (this.conversation != null) {
698				updateSnackBar(this.conversation);
699				final Contact contact = this.conversation.getContact();
700				if (this.conversation.isBlocked()) {
701
702				} else if (!contact.showInRoster()
703						&& contact
704						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
705
706				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
707					makeFingerprintWarning();
708				} else if (!conversation.getMucOptions().online()
709						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
710
711				} else if (this.conversation.isMuted()) {
712
713				}
714				conversation.populateWithMessages(ConversationFragment.this.messageList);
715				for (final Message message : this.messageList) {
716					if (message.getEncryption() == Message.ENCRYPTION_PGP
717							&& (message.getStatus() == Message.STATUS_RECEIVED || message
718								.getStatus() >= Message.STATUS_SEND)
719							&& message.getDownloadable() == null) {
720						if (!mEncryptedMessages.contains(message)) {
721							mEncryptedMessages.add(message);
722						}
723							}
724				}
725				decryptNext();
726				updateStatusMessages();
727				this.messageListAdapter.notifyDataSetChanged();
728				updateChatMsgHint();
729				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
730					activity.sendReadMarkerIfNecessary(conversation);
731				}
732				this.updateSendButton();
733			}
734		}
735	}
736
737	private void decryptNext() {
738		Message next = this.mEncryptedMessages.peek();
739		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
740
741		if (next != null && engine != null && !mDecryptJobRunning) {
742			mDecryptJobRunning = true;
743			engine.decrypt(next, new UiCallback<Message>() {
744
745				@Override
746				public void userInputRequried(PendingIntent pi, Message message) {
747					mDecryptJobRunning = false;
748					askForPassphraseIntent = pi.getIntentSender();
749					updateSnackBar(conversation);
750				}
751
752				@Override
753				public void success(Message message) {
754					mDecryptJobRunning = false;
755					try {
756						mEncryptedMessages.remove();
757					} catch (final NoSuchElementException ignored) {
758
759					}
760					activity.xmppConnectionService.updateMessage(message);
761				}
762
763				@Override
764				public void error(int error, Message message) {
765					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
766					mDecryptJobRunning = false;
767					try {
768						mEncryptedMessages.remove();
769					} catch (final NoSuchElementException ignored) {
770
771					}
772					activity.xmppConnectionService.updateConversationUi();
773				}
774			});
775		}
776	}
777
778	private void messageSent() {
779		int size = this.messageList.size();
780		messagesView.setSelection(size - 1);
781		mEditMessage.setText("");
782		updateChatMsgHint();
783	}
784
785	public void updateSendButton() {
786		Conversation c = this.conversation;
787		if (activity.useSendButtonToIndicateStatus() && c != null
788				&& c.getAccount().getStatus() == Account.State.ONLINE) {
789			if (c.getMode() == Conversation.MODE_SINGLE) {
790				switch (c.getContact().getMostAvailableStatus()) {
791					case Presences.CHAT:
792						this.mSendButton
793							.setImageResource(R.drawable.ic_action_send_now_online);
794						break;
795					case Presences.ONLINE:
796						this.mSendButton
797							.setImageResource(R.drawable.ic_action_send_now_online);
798						break;
799					case Presences.AWAY:
800						this.mSendButton
801							.setImageResource(R.drawable.ic_action_send_now_away);
802						break;
803					case Presences.XA:
804						this.mSendButton
805							.setImageResource(R.drawable.ic_action_send_now_away);
806						break;
807					case Presences.DND:
808						this.mSendButton
809							.setImageResource(R.drawable.ic_action_send_now_dnd);
810						break;
811					default:
812						this.mSendButton
813							.setImageResource(R.drawable.ic_action_send_now_offline);
814						break;
815				}
816			} else if (c.getMode() == Conversation.MODE_MULTI) {
817				if (c.getMucOptions().online()) {
818					this.mSendButton
819						.setImageResource(R.drawable.ic_action_send_now_online);
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		} else {
829			this.mSendButton
830				.setImageResource(R.drawable.ic_action_send_now_offline);
831		}
832	}
833
834	protected void updateStatusMessages() {
835		synchronized (this.messageList) {
836			if (conversation.getMode() == Conversation.MODE_SINGLE) {
837				for (int i = this.messageList.size() - 1; i >= 0; --i) {
838					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
839						return;
840					} else {
841						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
842							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
843							return;
844						}
845					}
846				}
847			}
848		}
849	}
850
851	protected void makeFingerprintWarning() {
852
853	}
854
855	protected void showSnackbar(final int message, final int action,
856			final OnClickListener clickListener) {
857		snackbar.setVisibility(View.VISIBLE);
858		snackbar.setOnClickListener(null);
859		snackbarMessage.setText(message);
860		snackbarMessage.setOnClickListener(null);
861		snackbarAction.setVisibility(View.VISIBLE);
862		snackbarAction.setText(action);
863		snackbarAction.setOnClickListener(clickListener);
864	}
865
866	protected void hideSnackbar() {
867		snackbar.setVisibility(View.GONE);
868	}
869
870	protected void sendPlainTextMessage(Message message) {
871		ConversationActivity activity = (ConversationActivity) getActivity();
872		activity.xmppConnectionService.sendMessage(message);
873		messageSent();
874	}
875
876	protected void sendPgpMessage(final Message message) {
877		final ConversationActivity activity = (ConversationActivity) getActivity();
878		final XmppConnectionService xmppService = activity.xmppConnectionService;
879		final Contact contact = message.getConversation().getContact();
880		if (activity.hasPgp()) {
881			if (conversation.getMode() == Conversation.MODE_SINGLE) {
882				if (contact.getPgpKeyId() != 0) {
883					xmppService.getPgpEngine().hasKey(contact,
884							new UiCallback<Contact>() {
885
886								@Override
887								public void userInputRequried(PendingIntent pi,
888										Contact contact) {
889									activity.runIntent(
890											pi,
891											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
892								}
893
894								@Override
895								public void success(Contact contact) {
896									messageSent();
897									activity.encryptTextMessage(message);
898								}
899
900								@Override
901								public void error(int error, Contact contact) {
902
903								}
904							});
905
906				} else {
907					showNoPGPKeyDialog(false,
908							new DialogInterface.OnClickListener() {
909
910								@Override
911								public void onClick(DialogInterface dialog,
912										int which) {
913									conversation
914										.setNextEncryption(Message.ENCRYPTION_NONE);
915									xmppService.databaseBackend
916										.updateConversation(conversation);
917									message.setEncryption(Message.ENCRYPTION_NONE);
918									xmppService.sendMessage(message);
919									messageSent();
920								}
921							});
922				}
923			} else {
924				if (conversation.getMucOptions().pgpKeysInUse()) {
925					if (!conversation.getMucOptions().everybodyHasKeys()) {
926						Toast warning = Toast
927							.makeText(getActivity(),
928									R.string.missing_public_keys,
929									Toast.LENGTH_LONG);
930						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
931						warning.show();
932					}
933					activity.encryptTextMessage(message);
934					messageSent();
935				} else {
936					showNoPGPKeyDialog(true,
937							new DialogInterface.OnClickListener() {
938
939								@Override
940								public void onClick(DialogInterface dialog,
941										int which) {
942									conversation
943										.setNextEncryption(Message.ENCRYPTION_NONE);
944									message.setEncryption(Message.ENCRYPTION_NONE);
945									xmppService.databaseBackend
946										.updateConversation(conversation);
947									xmppService.sendMessage(message);
948									messageSent();
949								}
950							});
951				}
952			}
953		} else {
954			activity.showInstallPgpDialog();
955		}
956	}
957
958	public void showNoPGPKeyDialog(boolean plural,
959			DialogInterface.OnClickListener listener) {
960		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
961		builder.setIconAttribute(android.R.attr.alertDialogIcon);
962		if (plural) {
963			builder.setTitle(getString(R.string.no_pgp_keys));
964			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
965		} else {
966			builder.setTitle(getString(R.string.no_pgp_key));
967			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
968		}
969		builder.setNegativeButton(getString(R.string.cancel), null);
970		builder.setPositiveButton(getString(R.string.send_unencrypted),
971				listener);
972		builder.create().show();
973	}
974
975	protected void sendOtrMessage(final Message message) {
976		final ConversationActivity activity = (ConversationActivity) getActivity();
977		final XmppConnectionService xmppService = activity.xmppConnectionService;
978		activity.selectPresence(message.getConversation(),
979				new OnPresenceSelected() {
980
981					@Override
982					public void onPresenceSelected() {
983						message.setCounterpart(conversation.getNextCounterpart());
984						xmppService.sendMessage(message);
985						messageSent();
986					}
987				});
988	}
989
990	public void appendText(String text) {
991		String previous = this.mEditMessage.getText().toString();
992		if (previous.length() != 0 && !previous.endsWith(" ")) {
993			text = " " + text;
994		}
995		this.mEditMessage.append(text);
996	}
997
998}