1package eu.siacs.conversations.ui;
  2
  3import android.app.AlertDialog;
  4import android.app.Fragment;
  5import android.app.PendingIntent;
  6import android.content.Context;
  7import android.content.DialogInterface;
  8import android.content.Intent;
  9import android.content.IntentSender;
 10import android.content.IntentSender.SendIntentException;
 11import android.os.Bundle;
 12import android.view.ContextMenu;
 13import android.view.ContextMenu.ContextMenuInfo;
 14import android.view.Gravity;
 15import android.view.KeyEvent;
 16import android.view.LayoutInflater;
 17import android.view.MenuItem;
 18import android.view.View;
 19import android.view.View.OnClickListener;
 20import android.view.ViewGroup;
 21import android.view.inputmethod.EditorInfo;
 22import android.view.inputmethod.InputMethodManager;
 23import android.widget.AbsListView;
 24import android.widget.AbsListView.OnScrollListener;
 25import android.widget.AdapterView;
 26import android.widget.AdapterView.AdapterContextMenuInfo;
 27import android.widget.ImageButton;
 28import android.widget.ListView;
 29import android.widget.RelativeLayout;
 30import android.widget.TextView;
 31import android.widget.TextView.OnEditorActionListener;
 32import android.widget.Toast;
 33
 34import net.java.otr4j.session.SessionStatus;
 35
 36import java.net.URLConnection;
 37import java.util.ArrayList;
 38import java.util.List;
 39import java.util.NoSuchElementException;
 40import java.util.concurrent.ConcurrentLinkedQueue;
 41
 42import eu.siacs.conversations.R;
 43import eu.siacs.conversations.crypto.PgpEngine;
 44import eu.siacs.conversations.entities.Account;
 45import eu.siacs.conversations.entities.Contact;
 46import eu.siacs.conversations.entities.Conversation;
 47import eu.siacs.conversations.entities.Downloadable;
 48import eu.siacs.conversations.entities.DownloadableFile;
 49import eu.siacs.conversations.entities.DownloadablePlaceholder;
 50import eu.siacs.conversations.entities.Message;
 51import eu.siacs.conversations.entities.MucOptions;
 52import eu.siacs.conversations.entities.Presences;
 53import eu.siacs.conversations.services.XmppConnectionService;
 54import eu.siacs.conversations.ui.EditMessage.OnEnterPressed;
 55import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
 56import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
 57import eu.siacs.conversations.ui.adapter.MessageAdapter;
 58import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
 59import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
 60import eu.siacs.conversations.xmpp.jid.Jid;
 61
 62public class ConversationFragment extends Fragment {
 63
 64	protected Conversation conversation;
 65	private OnClickListener leaveMuc = new OnClickListener() {
 66
 67		@Override
 68		public void onClick(View v) {
 69			activity.endConversation(conversation);
 70		}
 71	};
 72	private OnClickListener joinMuc = new OnClickListener() {
 73
 74		@Override
 75		public void onClick(View v) {
 76			activity.xmppConnectionService.joinMuc(conversation);
 77		}
 78	};
 79	private OnClickListener enterPassword = new OnClickListener() {
 80
 81		@Override
 82		public void onClick(View v) {
 83			MucOptions muc = conversation.getMucOptions();
 84			String password = muc.getPassword();
 85			if (password == null) {
 86				password = "";
 87			}
 88			activity.quickPasswordEdit(password, new OnValueEdited() {
 89
 90				@Override
 91				public void onValueEdited(String value) {
 92					activity.xmppConnectionService.providePasswordForMuc(
 93							conversation, value);
 94				}
 95			});
 96		}
 97	};
 98	protected ListView messagesView;
 99	final protected List<Message> messageList = new ArrayList<>();
100	protected MessageAdapter messageListAdapter;
101	protected Contact contact;
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				} catch (SendIntentException e) {
199					//
200				}
201			}
202		}
203	};
204	protected OnClickListener clickToVerify = new OnClickListener() {
205
206		@Override
207		public void onClick(View v) {
208			activity.verifyOtrSessionDialog(conversation,v);
209		}
210	};
211	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<>();
212	private boolean mDecryptJobRunning = false;
213	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
214
215		@Override
216		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
217			if (actionId == EditorInfo.IME_ACTION_SEND) {
218				InputMethodManager imm = (InputMethodManager) v.getContext()
219					.getSystemService(Context.INPUT_METHOD_SERVICE);
220				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
221				sendMessage();
222				return true;
223			} else {
224				return false;
225			}
226		}
227	};
228	private OnClickListener mSendButtonListener = new OnClickListener() {
229
230		@Override
231		public void onClick(View v) {
232			sendMessage();
233		}
234	};
235	private OnClickListener clickToMuc = new OnClickListener() {
236
237		@Override
238		public void onClick(View v) {
239			Intent intent = new Intent(getActivity(),
240					ConferenceDetailsActivity.class);
241			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
242			intent.putExtra("uuid", conversation.getUuid());
243			startActivity(intent);
244		}
245	};
246	private ConversationActivity activity;
247	private Message selectedMessage;
248
249	private void sendMessage() {
250		if (this.conversation == null) {
251			return;
252		}
253		if (mEditMessage.getText().length() < 1) {
254			if (this.conversation.getMode() == Conversation.MODE_MULTI) {
255				conversation.setNextCounterpart(null);
256				updateChatMsgHint();
257			}
258			return;
259		}
260		Message message = new Message(conversation, mEditMessage.getText()
261				.toString(), conversation.getNextEncryption(activity
262					.forceEncryption()));
263		if (conversation.getMode() == Conversation.MODE_MULTI) {
264			if (conversation.getNextCounterpart() != null) {
265				message.setCounterpart(conversation.getNextCounterpart());
266				message.setType(Message.TYPE_PRIVATE);
267				conversation.setNextCounterpart(null);
268			}
269		}
270		if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_OTR) {
271			sendOtrMessage(message);
272		} else if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_PGP) {
273			sendPgpMessage(message);
274		} else {
275			sendPlainTextMessage(message);
276		}
277	}
278
279	public void updateChatMsgHint() {
280		if (conversation.getMode() == Conversation.MODE_MULTI
281				&& conversation.getNextCounterpart() != null) {
282			this.mEditMessage.setHint(getString(
283						R.string.send_private_message_to,
284						conversation.getNextCounterpart().getResourcepart()));
285		} else {
286			switch (conversation.getNextEncryption(activity.forceEncryption())) {
287				case Message.ENCRYPTION_NONE:
288					mEditMessage
289						.setHint(getString(R.string.send_plain_text_message));
290					break;
291				case Message.ENCRYPTION_OTR:
292					mEditMessage.setHint(getString(R.string.send_otr_message));
293					break;
294				case Message.ENCRYPTION_PGP:
295					mEditMessage.setHint(getString(R.string.send_pgp_message));
296					break;
297				default:
298					break;
299			}
300		}
301	}
302
303	@Override
304	public View onCreateView(final LayoutInflater inflater,
305			ViewGroup container, Bundle savedInstanceState) {
306		final View view = inflater.inflate(R.layout.fragment_conversation,
307				container, false);
308		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
309		mEditMessage.setOnClickListener(new OnClickListener() {
310
311			@Override
312			public void onClick(View v) {
313				activity.hideConversationsOverview();
314			}
315		});
316		mEditMessage.setOnEditorActionListener(mEditorActionListener);
317		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
318
319			@Override
320			public boolean onEnterPressed() {
321				if (activity.enterIsSend()) {
322					sendMessage();
323					return true;
324				} else {
325					return false;
326				}
327			}
328		});
329
330		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
331		mSendButton.setOnClickListener(this.mSendButtonListener);
332
333		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
334		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
335		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
336
337		messagesView = (ListView) view.findViewById(R.id.messages_view);
338		messagesView.setOnScrollListener(mOnScrollListener);
339		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
340		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
341		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
342
343			@Override
344			public void onContactPictureClicked(Message message) {
345				if (message.getStatus() <= Message.STATUS_RECEIVED) {
346					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
347						if (message.getCounterpart() != null) {
348							if (!message.getCounterpart().isBareJid()) {
349								highlightInConference(message.getCounterpart().getResourcepart());
350							} else {
351								highlightInConference(message.getCounterpart().toString());
352							}
353						}
354					} else {
355						Contact contact = message.getConversation()
356							.getContact();
357						if (contact.showInRoster()) {
358							activity.switchToContactDetails(contact);
359						} else {
360							activity.showAddToRosterDialog(message
361									.getConversation());
362						}
363					}
364				} else {
365					Account account = message.getConversation().getAccount();
366					Intent intent = new Intent(activity, EditAccountActivity.class);
367					intent.putExtra("jid", account.getJid().toBareJid().toString());
368					startActivity(intent);
369				}
370			}
371		});
372		messageListAdapter
373			.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
374
375				@Override
376				public void onContactPictureLongClicked(Message message) {
377					if (message.getStatus() <= Message.STATUS_RECEIVED) {
378						if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
379							if (message.getCounterpart() != null) {
380								privateMessageWith(message.getCounterpart());
381							}
382						}
383					} else {
384						activity.showQrCode();
385					}
386				}
387			});
388		messagesView.setAdapter(messageListAdapter);
389
390		registerForContextMenu(messagesView);
391
392		return view;
393	}
394
395	@Override
396	public void onCreateContextMenu(ContextMenu menu, View v,
397			ContextMenuInfo menuInfo) {
398		synchronized (this.messageList) {
399			super.onCreateContextMenu(menu, v, menuInfo);
400			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
401			this.selectedMessage = this.messageList.get(acmi.position);
402			populateContextMenu(menu);
403		}
404	}
405
406	private void populateContextMenu(ContextMenu menu) {
407		final Message m = this.selectedMessage;
408		if (m.getType() != Message.TYPE_STATUS) {
409			activity.getMenuInflater().inflate(R.menu.message_context, menu);
410			menu.setHeaderTitle(R.string.message_options);
411			MenuItem copyText = menu.findItem(R.id.copy_text);
412			MenuItem shareWith = menu.findItem(R.id.share_with);
413			MenuItem sendAgain = menu.findItem(R.id.send_again);
414			MenuItem copyUrl = menu.findItem(R.id.copy_url);
415			MenuItem downloadImage = menu.findItem(R.id.download_image);
416			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
417			if (m.getType() != Message.TYPE_TEXT || m.getDownloadable() != null) {
418				copyText.setVisible(false);
419			}
420			if (m.getType() == Message.TYPE_TEXT
421					|| m.getType() == Message.TYPE_PRIVATE
422					|| m.getDownloadable() != null) {
423				shareWith.setVisible(false);
424			}
425			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
426				sendAgain.setVisible(false);
427			}
428			if ((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
429					|| m.getImageParams().url == null) {
430				copyUrl.setVisible(false);
431			}
432			if (m.getType() != Message.TYPE_TEXT
433					|| m.getDownloadable() != null
434					|| !m.bodyContainsDownloadable()) {
435				downloadImage.setVisible(false);
436			}
437			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
438						|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
439					|| m.getStatus() == Message.STATUS_OFFERED)))) {
440				cancelTransmission.setVisible(false);
441			}
442		}
443	}
444
445	@Override
446	public boolean onContextItemSelected(MenuItem item) {
447		switch (item.getItemId()) {
448			case R.id.share_with:
449				shareWith(selectedMessage);
450				return true;
451			case R.id.copy_text:
452				copyText(selectedMessage);
453				return true;
454			case R.id.send_again:
455				resendMessage(selectedMessage);
456				return true;
457			case R.id.copy_url:
458				copyUrl(selectedMessage);
459				return true;
460			case R.id.download_image:
461				downloadImage(selectedMessage);
462				return true;
463			case R.id.cancel_transmission:
464				cancelTransmission(selectedMessage);
465				return true;
466			default:
467				return super.onContextItemSelected(item);
468		}
469	}
470
471	private void shareWith(Message message) {
472		Intent shareIntent = new Intent();
473		shareIntent.setAction(Intent.ACTION_SEND);
474		shareIntent.putExtra(Intent.EXTRA_STREAM,
475				activity.xmppConnectionService.getFileBackend()
476				.getJingleFileUri(message));
477		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
478		String path = message.getRelativeFilePath();
479		String mime = path == null ? null :URLConnection.guessContentTypeFromName(path);
480		if (mime == null) {
481			mime = "image/webp";
482		}
483		shareIntent.setType(mime);
484		activity.startActivity(Intent.createChooser(shareIntent,getText(R.string.share_with)));
485	}
486
487	private void copyText(Message message) {
488		if (activity.copyTextToClipboard(message.getMergedBody(),
489					R.string.message_text)) {
490			Toast.makeText(activity, R.string.message_copied_to_clipboard,
491					Toast.LENGTH_SHORT).show();
492		}
493	}
494
495	private void resendMessage(Message message) {
496		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
497			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
498			if (!file.exists()) {
499				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
500				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
501				return;
502			}
503		}
504		activity.xmppConnectionService.resendFailedMessages(message);
505	}
506
507	private void copyUrl(Message message) {
508		if (activity.copyTextToClipboard(
509					message.getImageParams().url.toString(), R.string.image_url)) {
510			Toast.makeText(activity, R.string.url_copied_to_clipboard,
511					Toast.LENGTH_SHORT).show();
512					}
513	}
514
515	private void downloadImage(Message message) {
516		activity.xmppConnectionService.getHttpConnectionManager()
517			.createNewConnection(message);
518	}
519
520	private void cancelTransmission(Message message) {
521		Downloadable downloadable = message.getDownloadable();
522		if (downloadable!=null) {
523			downloadable.cancel();
524		} else {
525			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
526		}
527	}
528
529	protected void privateMessageWith(final Jid counterpart) {
530		this.mEditMessage.setText("");
531		this.conversation.setNextCounterpart(counterpart);
532		updateChatMsgHint();
533	}
534
535	protected void highlightInConference(String nick) {
536		String oldString = mEditMessage.getText().toString().trim();
537		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
538			mEditMessage.getText().insert(0, nick + ": ");
539		} else {
540			if (mEditMessage.getText().charAt(
541						mEditMessage.getSelectionStart() - 1) != ' ') {
542				nick = " " + nick;
543						}
544			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
545					nick + " ");
546		}
547	}
548
549	@Override
550	public void onStop() {
551		mDecryptJobRunning = false;
552		super.onStop();
553		if (this.conversation != null) {
554			this.conversation.setNextMessage(mEditMessage.getText().toString());
555		}
556	}
557
558	public void reInit(Conversation conversation) {
559		if (conversation == null) {
560			return;
561		}
562		if (this.conversation != null) {
563			this.conversation.setNextMessage(mEditMessage.getText().toString());
564			this.conversation.trim();
565		}
566		this.activity = (ConversationActivity) getActivity();
567		this.conversation = conversation;
568		this.mDecryptJobRunning = false;
569		this.mEncryptedMessages.clear();
570		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
571			this.conversation.setNextCounterpart(null);
572		}
573		this.mEditMessage.setText("");
574		this.mEditMessage.append(this.conversation.getNextMessage());
575		this.messagesView.invalidateViews();
576		updateMessages();
577		this.messagesLoaded = true;
578		int size = this.messageList.size();
579		if (size > 0) {
580			messagesView.setSelection(size - 1);
581		}
582	}
583
584	public void updateMessages() {
585		synchronized (this.messageList) {
586			if (getView() == null) {
587				return;
588			}
589			hideSnackbar();
590			final ConversationActivity activity = (ConversationActivity) getActivity();
591			if (this.conversation != null) {
592				final Contact contact = this.conversation.getContact();
593				if (this.conversation.isBlocked()) {
594					showSnackbar(R.string.contact_blocked, R.string.unblock,
595							new OnClickListener() {
596								@Override
597								public void onClick(final View v) {
598									v.post(new Runnable() {
599										@Override
600										public void run() {
601											v.setVisibility(View.INVISIBLE);
602										}
603									});
604									if (conversation.isDomainBlocked()) {
605										BlockContactDialog.show(getActivity(), ((ConversationActivity) getActivity()).xmppConnectionService, conversation);
606									} else {
607										((ConversationActivity) getActivity()).unblockConversation(conversation);
608									}
609								}
610							});
611				} else if (this.conversation.isMuted()) {
612					showSnackbar(R.string.notifications_disabled, R.string.enable,
613							new OnClickListener() {
614
615								@Override
616								public void onClick(final View v) {
617									activity.unmuteConversation(conversation);
618								}
619							});
620				} else if (!contact.showInRoster()
621						&& contact
622						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
623					showSnackbar(R.string.contact_added_you, R.string.add_back,
624							new OnClickListener() {
625
626								@Override
627								public void onClick(View v) {
628									activity.xmppConnectionService
629										.createContact(contact);
630									activity.switchToContactDetails(contact);
631								}
632							});
633				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
634					makeFingerprintWarning();
635				} else if (!conversation.getMucOptions().online()
636						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
637					int error = conversation.getMucOptions().getError();
638					switch (error) {
639						case MucOptions.ERROR_NICK_IN_USE:
640							showSnackbar(R.string.nick_in_use, R.string.edit,
641									clickToMuc);
642							break;
643						case MucOptions.ERROR_UNKNOWN:
644							showSnackbar(R.string.conference_not_found,
645									R.string.leave, leaveMuc);
646							break;
647						case MucOptions.ERROR_PASSWORD_REQUIRED:
648							showSnackbar(R.string.conference_requires_password,
649									R.string.enter_password, enterPassword);
650							break;
651						case MucOptions.ERROR_BANNED:
652							showSnackbar(R.string.conference_banned,
653									R.string.leave, leaveMuc);
654							break;
655						case MucOptions.ERROR_MEMBERS_ONLY:
656							showSnackbar(R.string.conference_members_only,
657									R.string.leave, leaveMuc);
658							break;
659						case MucOptions.KICKED_FROM_ROOM:
660							showSnackbar(R.string.conference_kicked, R.string.join,
661									joinMuc);
662							break;
663						default:
664							break;
665					}
666						}
667				conversation.populateWithMessages(ConversationFragment.this.messageList);
668				for (final Message message : this.messageList) {
669					if (message.getEncryption() == Message.ENCRYPTION_PGP
670							&& (message.getStatus() == Message.STATUS_RECEIVED || message
671								.getStatus() >= Message.STATUS_SEND)
672							&& message.getDownloadable() == null) {
673						if (!mEncryptedMessages.contains(message)) {
674							mEncryptedMessages.add(message);
675						}
676							}
677				}
678				decryptNext();
679				updateStatusMessages();
680				this.messageListAdapter.notifyDataSetChanged();
681				updateChatMsgHint();
682				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
683					activity.sendReadMarkerIfNecessary(conversation);
684				}
685				this.updateSendButton();
686			}
687		}
688	}
689
690	private void decryptNext() {
691		Message next = this.mEncryptedMessages.peek();
692		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
693
694		if (next != null && engine != null && !mDecryptJobRunning) {
695			mDecryptJobRunning = true;
696			engine.decrypt(next, new UiCallback<Message>() {
697
698				@Override
699				public void userInputRequried(PendingIntent pi, Message message) {
700					mDecryptJobRunning = false;
701					askForPassphraseIntent = pi.getIntentSender();
702					showSnackbar(R.string.openpgp_messages_found,
703							R.string.decrypt, clickToDecryptListener);
704				}
705
706				@Override
707				public void success(Message message) {
708					mDecryptJobRunning = false;
709					try {
710						mEncryptedMessages.remove();
711					} catch (final NoSuchElementException ignored) {
712
713					}
714					activity.xmppConnectionService.updateMessage(message);
715				}
716
717				@Override
718				public void error(int error, Message message) {
719					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
720					mDecryptJobRunning = false;
721					try {
722						mEncryptedMessages.remove();
723					} catch (final NoSuchElementException ignored) {
724
725					}
726					activity.xmppConnectionService.updateConversationUi();
727				}
728			});
729		}
730	}
731
732	private void messageSent() {
733		int size = this.messageList.size();
734		messagesView.setSelection(size - 1);
735		mEditMessage.setText("");
736		updateChatMsgHint();
737	}
738
739	public void updateSendButton() {
740		Conversation c = this.conversation;
741		if (activity.useSendButtonToIndicateStatus() && c != null
742				&& c.getAccount().getStatus() == Account.State.ONLINE) {
743			if (c.getMode() == Conversation.MODE_SINGLE) {
744				switch (c.getContact().getMostAvailableStatus()) {
745					case Presences.CHAT:
746						this.mSendButton
747							.setImageResource(R.drawable.ic_action_send_now_online);
748						break;
749					case Presences.ONLINE:
750						this.mSendButton
751							.setImageResource(R.drawable.ic_action_send_now_online);
752						break;
753					case Presences.AWAY:
754						this.mSendButton
755							.setImageResource(R.drawable.ic_action_send_now_away);
756						break;
757					case Presences.XA:
758						this.mSendButton
759							.setImageResource(R.drawable.ic_action_send_now_away);
760						break;
761					case Presences.DND:
762						this.mSendButton
763							.setImageResource(R.drawable.ic_action_send_now_dnd);
764						break;
765					default:
766						this.mSendButton
767							.setImageResource(R.drawable.ic_action_send_now_offline);
768						break;
769				}
770			} else if (c.getMode() == Conversation.MODE_MULTI) {
771				if (c.getMucOptions().online()) {
772					this.mSendButton
773						.setImageResource(R.drawable.ic_action_send_now_online);
774				} else {
775					this.mSendButton
776						.setImageResource(R.drawable.ic_action_send_now_offline);
777				}
778			} else {
779				this.mSendButton
780					.setImageResource(R.drawable.ic_action_send_now_offline);
781			}
782		} else {
783			this.mSendButton
784				.setImageResource(R.drawable.ic_action_send_now_offline);
785		}
786	}
787
788	protected void updateStatusMessages() {
789		synchronized (this.messageList) {
790			if (conversation.getMode() == Conversation.MODE_SINGLE) {
791				for (int i = this.messageList.size() - 1; i >= 0; --i) {
792					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
793						return;
794					} else {
795						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
796							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
797							return;
798						}
799					}
800				}
801			}
802		}
803	}
804
805	protected void makeFingerprintWarning() {
806		if (conversation.smpRequested()) {
807			showSnackbar(R.string.smp_requested, R.string.verify, new OnClickListener() {
808				@Override
809				public void onClick(View view) {
810					Intent intent = new Intent(activity, VerifyOTRActivity.class);
811					intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
812					intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
813					intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
814					intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
815					startActivity(intent);
816				}
817			});
818		} else if (conversation.hasValidOtrSession() && (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
819				&& (!conversation.isOtrFingerprintVerified())) {
820			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
821				}
822	}
823
824	protected void showSnackbar(final int message, final int action,
825			final OnClickListener clickListener) {
826		snackbar.setVisibility(View.VISIBLE);
827		snackbar.setOnClickListener(null);
828		snackbarMessage.setText(message);
829		snackbarMessage.setOnClickListener(null);
830		snackbarAction.setVisibility(View.VISIBLE);
831		snackbarAction.setText(action);
832		snackbarAction.setOnClickListener(clickListener);
833	}
834
835	protected void hideSnackbar() {
836		snackbar.setVisibility(View.GONE);
837	}
838
839	protected void sendPlainTextMessage(Message message) {
840		ConversationActivity activity = (ConversationActivity) getActivity();
841		activity.xmppConnectionService.sendMessage(message);
842		messageSent();
843	}
844
845	protected void sendPgpMessage(final Message message) {
846		final ConversationActivity activity = (ConversationActivity) getActivity();
847		final XmppConnectionService xmppService = activity.xmppConnectionService;
848		final Contact contact = message.getConversation().getContact();
849		if (activity.hasPgp()) {
850			if (conversation.getMode() == Conversation.MODE_SINGLE) {
851				if (contact.getPgpKeyId() != 0) {
852					xmppService.getPgpEngine().hasKey(contact,
853							new UiCallback<Contact>() {
854
855								@Override
856								public void userInputRequried(PendingIntent pi,
857										Contact contact) {
858									activity.runIntent(
859											pi,
860											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
861								}
862
863								@Override
864								public void success(Contact contact) {
865									messageSent();
866									activity.encryptTextMessage(message);
867								}
868
869								@Override
870								public void error(int error, Contact contact) {
871
872								}
873							});
874
875				} else {
876					showNoPGPKeyDialog(false,
877							new DialogInterface.OnClickListener() {
878
879								@Override
880								public void onClick(DialogInterface dialog,
881										int which) {
882									conversation
883										.setNextEncryption(Message.ENCRYPTION_NONE);
884									xmppService.databaseBackend
885										.updateConversation(conversation);
886									message.setEncryption(Message.ENCRYPTION_NONE);
887									xmppService.sendMessage(message);
888									messageSent();
889								}
890							});
891				}
892			} else {
893				if (conversation.getMucOptions().pgpKeysInUse()) {
894					if (!conversation.getMucOptions().everybodyHasKeys()) {
895						Toast warning = Toast
896							.makeText(getActivity(),
897									R.string.missing_public_keys,
898									Toast.LENGTH_LONG);
899						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
900						warning.show();
901					}
902					activity.encryptTextMessage(message);
903					messageSent();
904				} else {
905					showNoPGPKeyDialog(true,
906							new DialogInterface.OnClickListener() {
907
908								@Override
909								public void onClick(DialogInterface dialog,
910										int which) {
911									conversation
912										.setNextEncryption(Message.ENCRYPTION_NONE);
913									message.setEncryption(Message.ENCRYPTION_NONE);
914									xmppService.databaseBackend
915										.updateConversation(conversation);
916									xmppService.sendMessage(message);
917									messageSent();
918								}
919							});
920				}
921			}
922		} else {
923			activity.showInstallPgpDialog();
924		}
925	}
926
927	public void showNoPGPKeyDialog(boolean plural,
928			DialogInterface.OnClickListener listener) {
929		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
930		builder.setIconAttribute(android.R.attr.alertDialogIcon);
931		if (plural) {
932			builder.setTitle(getString(R.string.no_pgp_keys));
933			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
934		} else {
935			builder.setTitle(getString(R.string.no_pgp_key));
936			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
937		}
938		builder.setNegativeButton(getString(R.string.cancel), null);
939		builder.setPositiveButton(getString(R.string.send_unencrypted),
940				listener);
941		builder.create().show();
942	}
943
944	protected void sendOtrMessage(final Message message) {
945		final ConversationActivity activity = (ConversationActivity) getActivity();
946		final XmppConnectionService xmppService = activity.xmppConnectionService;
947		activity.selectPresence(message.getConversation(),
948				new OnPresenceSelected() {
949
950					@Override
951					public void onPresenceSelected() {
952						message.setCounterpart(conversation.getNextCounterpart());
953						xmppService.sendMessage(message);
954						messageSent();
955					}
956				});
957	}
958
959	public void appendText(String text) {
960		String previous = this.mEditMessage.getText().toString();
961		if (previous.length() != 0 && !previous.endsWith(" ")) {
962			text = " " + text;
963		}
964		this.mEditMessage.append(text);
965	}
966
967	public void clearInputField() {
968		this.mEditMessage.setText("");
969	}
970}