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