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		}
302	}
303
304	private void setupIme() {
305		if (((ConversationActivity)getActivity()).usingEnterKey()) {
306			mEditMessage.setInputType(mEditMessage.getInputType() & (~InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE));
307		} else {
308			mEditMessage.setInputType(mEditMessage.getInputType() | InputType.TYPE_TEXT_VARIATION_SHORT_MESSAGE);
309		}
310	}
311
312	@Override
313	public View onCreateView(final LayoutInflater inflater,
314			ViewGroup container, Bundle savedInstanceState) {
315		final View view = inflater.inflate(R.layout.fragment_conversation,
316				container, false);
317		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
318		setupIme();
319		mEditMessage.setOnClickListener(new OnClickListener() {
320
321			@Override
322			public void onClick(View v) {
323				activity.hideConversationsOverview();
324			}
325		});
326		mEditMessage.setOnEditorActionListener(mEditorActionListener);
327		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
328
329			@Override
330			public boolean onEnterPressed() {
331				if (activity.enterIsSend()) {
332					sendMessage();
333					return true;
334				} else {
335					return false;
336				}
337			}
338		});
339
340		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
341		mSendButton.setOnClickListener(this.mSendButtonListener);
342
343		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
344		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
345		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
346
347		messagesView = (ListView) view.findViewById(R.id.messages_view);
348		messagesView.setOnScrollListener(mOnScrollListener);
349		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
350		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
351		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
352
353			@Override
354			public void onContactPictureClicked(Message message) {
355				if (message.getStatus() <= Message.STATUS_RECEIVED) {
356					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
357						if (message.getCounterpart() != null) {
358							if (!message.getCounterpart().isBareJid()) {
359								highlightInConference(message.getCounterpart().getResourcepart());
360							} else {
361								highlightInConference(message.getCounterpart().toString());
362							}
363						}
364					} else {
365						Contact contact = message.getConversation()
366							.getContact();
367						if (contact.showInRoster()) {
368							activity.switchToContactDetails(contact);
369						} else {
370							activity.showAddToRosterDialog(message
371									.getConversation());
372						}
373					}
374				} else {
375					Account account = message.getConversation().getAccount();
376					Intent intent = new Intent(activity, EditAccountActivity.class);
377					intent.putExtra("jid", account.getJid().toBareJid().toString());
378					startActivity(intent);
379				}
380			}
381		});
382		messageListAdapter
383			.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
384
385				@Override
386				public void onContactPictureLongClicked(Message message) {
387					if (message.getStatus() <= Message.STATUS_RECEIVED) {
388						if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
389							if (message.getCounterpart() != null) {
390								privateMessageWith(message.getCounterpart());
391							}
392						}
393					} else {
394						activity.showQrCode();
395					}
396				}
397			});
398		messagesView.setAdapter(messageListAdapter);
399
400		registerForContextMenu(messagesView);
401
402		return view;
403	}
404
405	@Override
406	public void onCreateContextMenu(ContextMenu menu, View v,
407			ContextMenuInfo menuInfo) {
408		synchronized (this.messageList) {
409			super.onCreateContextMenu(menu, v, menuInfo);
410			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
411			this.selectedMessage = this.messageList.get(acmi.position);
412			populateContextMenu(menu);
413		}
414	}
415
416	private void populateContextMenu(ContextMenu menu) {
417		final Message m = this.selectedMessage;
418		if (m.getType() != Message.TYPE_STATUS) {
419			activity.getMenuInflater().inflate(R.menu.message_context, menu);
420			menu.setHeaderTitle(R.string.message_options);
421			MenuItem copyText = menu.findItem(R.id.copy_text);
422			MenuItem shareWith = menu.findItem(R.id.share_with);
423			MenuItem sendAgain = menu.findItem(R.id.send_again);
424			MenuItem copyUrl = menu.findItem(R.id.copy_url);
425			MenuItem downloadImage = menu.findItem(R.id.download_image);
426			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
427			if (m.getType() != Message.TYPE_TEXT || m.getDownloadable() != null) {
428				copyText.setVisible(false);
429			}
430			if (m.getType() == Message.TYPE_TEXT
431					|| m.getType() == Message.TYPE_PRIVATE
432					|| m.getDownloadable() != null) {
433				shareWith.setVisible(false);
434					}
435			if (m.getStatus() != Message.STATUS_SEND_FAILED) {
436				sendAgain.setVisible(false);
437			}
438			if ((m.getType() != Message.TYPE_IMAGE && m.getDownloadable() == null)
439					|| m.getImageParams().url == null) {
440				copyUrl.setVisible(false);
441					}
442			if (m.getType() != Message.TYPE_TEXT
443					|| m.getDownloadable() != null
444					|| !m.bodyContainsDownloadable()) {
445				downloadImage.setVisible(false);
446					}
447			if (!((m.getDownloadable() != null && !(m.getDownloadable() instanceof DownloadablePlaceholder))
448						|| (m.isFileOrImage() && (m.getStatus() == Message.STATUS_WAITING
449								|| m.getStatus() == Message.STATUS_OFFERED)))) {
450				cancelTransmission.setVisible(false);
451								}
452		}
453	}
454
455	@Override
456	public boolean onContextItemSelected(MenuItem item) {
457		switch (item.getItemId()) {
458			case R.id.share_with:
459				shareWith(selectedMessage);
460				return true;
461			case R.id.copy_text:
462				copyText(selectedMessage);
463				return true;
464			case R.id.send_again:
465				resendMessage(selectedMessage);
466				return true;
467			case R.id.copy_url:
468				copyUrl(selectedMessage);
469				return true;
470			case R.id.download_image:
471				downloadImage(selectedMessage);
472				return true;
473			case R.id.cancel_transmission:
474				cancelTransmission(selectedMessage);
475				return true;
476			default:
477				return super.onContextItemSelected(item);
478		}
479	}
480
481	private void shareWith(Message message) {
482		Intent shareIntent = new Intent();
483		shareIntent.setAction(Intent.ACTION_SEND);
484		shareIntent.putExtra(Intent.EXTRA_STREAM,
485				activity.xmppConnectionService.getFileBackend()
486				.getJingleFileUri(message));
487		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
488		String path = message.getRelativeFilePath();
489		String mime = path == null ? null :URLConnection.guessContentTypeFromName(path);
490		if (mime == null) {
491			mime = "image/webp";
492		}
493		shareIntent.setType(mime);
494		activity.startActivity(Intent.createChooser(shareIntent,getText(R.string.share_with)));
495	}
496
497	private void copyText(Message message) {
498		if (activity.copyTextToClipboard(message.getMergedBody(),
499					R.string.message_text)) {
500			Toast.makeText(activity, R.string.message_copied_to_clipboard,
501					Toast.LENGTH_SHORT).show();
502		}
503	}
504
505	private void resendMessage(Message message) {
506		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
507			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
508			if (!file.exists()) {
509				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
510				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
511				return;
512			}
513		}
514		activity.xmppConnectionService.resendFailedMessages(message);
515	}
516
517	private void copyUrl(Message message) {
518		if (activity.copyTextToClipboard(
519					message.getImageParams().url.toString(), R.string.image_url)) {
520			Toast.makeText(activity, R.string.url_copied_to_clipboard,
521					Toast.LENGTH_SHORT).show();
522					}
523	}
524
525	private void downloadImage(Message message) {
526		activity.xmppConnectionService.getHttpConnectionManager()
527			.createNewConnection(message);
528	}
529
530	private void cancelTransmission(Message message) {
531		Downloadable downloadable = message.getDownloadable();
532		if (downloadable!=null) {
533			downloadable.cancel();
534		} else {
535			activity.xmppConnectionService.markMessage(message,Message.STATUS_SEND_FAILED);
536		}
537	}
538
539	protected void privateMessageWith(final Jid counterpart) {
540		this.mEditMessage.setText("");
541		this.conversation.setNextCounterpart(counterpart);
542		updateChatMsgHint();
543	}
544
545	protected void highlightInConference(String nick) {
546		String oldString = mEditMessage.getText().toString().trim();
547		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
548			mEditMessage.getText().insert(0, nick + ": ");
549		} else {
550			if (mEditMessage.getText().charAt(
551						mEditMessage.getSelectionStart() - 1) != ' ') {
552				nick = " " + nick;
553						}
554			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
555					nick + " ");
556		}
557	}
558
559	@Override
560	public void onStop() {
561		mDecryptJobRunning = false;
562		super.onStop();
563		if (this.conversation != null) {
564			this.conversation.setNextMessage(mEditMessage.getText().toString());
565		}
566	}
567
568	public void reInit(Conversation conversation) {
569		if (conversation == null) {
570			return;
571		}
572		if (this.conversation != null) {
573			this.conversation.setNextMessage(mEditMessage.getText().toString());
574			this.conversation.trim();
575		}
576		this.activity = (ConversationActivity) getActivity();
577		this.conversation = conversation;
578		this.mDecryptJobRunning = false;
579		this.mEncryptedMessages.clear();
580		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
581			this.conversation.setNextCounterpart(null);
582		}
583		this.mEditMessage.setText("");
584		this.mEditMessage.append(this.conversation.getNextMessage());
585		this.messagesView.invalidateViews();
586		updateMessages();
587		this.messagesLoaded = true;
588		int size = this.messageList.size();
589		if (size > 0) {
590			messagesView.setSelection(size - 1);
591		}
592	}
593
594	public void updateMessages() {
595		synchronized (this.messageList) {
596			if (getView() == null) {
597				return;
598			}
599			hideSnackbar();
600			final ConversationActivity activity = (ConversationActivity) getActivity();
601			if (this.conversation != null) {
602				final Contact contact = this.conversation.getContact();
603				if (this.conversation.isBlocked()) {
604					showSnackbar(R.string.contact_blocked, R.string.unblock,
605							new OnClickListener() {
606								@Override
607								public void onClick(final View v) {
608									v.post(new Runnable() {
609										@Override
610										public void run() {
611											v.setVisibility(View.INVISIBLE);
612										}
613									});
614									if (conversation.isDomainBlocked()) {
615										BlockContactDialog.show(getActivity(), ((ConversationActivity) getActivity()).xmppConnectionService, conversation);
616									} else {
617										((ConversationActivity) getActivity()).unblockConversation(conversation);
618									}
619								}
620							});
621				} else if (this.conversation.isMuted()) {
622					showSnackbar(R.string.notifications_disabled, R.string.enable,
623							new OnClickListener() {
624
625								@Override
626								public void onClick(final View v) {
627									activity.unmuteConversation(conversation);
628								}
629							});
630				} else if (!contact.showInRoster()
631						&& contact
632						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
633					showSnackbar(R.string.contact_added_you, R.string.add_back,
634							new OnClickListener() {
635
636								@Override
637								public void onClick(View v) {
638									activity.xmppConnectionService
639										.createContact(contact);
640									activity.switchToContactDetails(contact);
641								}
642							});
643				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
644					makeFingerprintWarning();
645				} else if (!conversation.getMucOptions().online()
646						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
647					int error = conversation.getMucOptions().getError();
648					switch (error) {
649						case MucOptions.ERROR_NICK_IN_USE:
650							showSnackbar(R.string.nick_in_use, R.string.edit,
651									clickToMuc);
652							break;
653						case MucOptions.ERROR_UNKNOWN:
654							showSnackbar(R.string.conference_not_found,
655									R.string.leave, leaveMuc);
656							break;
657						case MucOptions.ERROR_PASSWORD_REQUIRED:
658							showSnackbar(R.string.conference_requires_password,
659									R.string.enter_password, enterPassword);
660							break;
661						case MucOptions.ERROR_BANNED:
662							showSnackbar(R.string.conference_banned,
663									R.string.leave, leaveMuc);
664							break;
665						case MucOptions.ERROR_MEMBERS_ONLY:
666							showSnackbar(R.string.conference_members_only,
667									R.string.leave, leaveMuc);
668							break;
669						case MucOptions.KICKED_FROM_ROOM:
670							showSnackbar(R.string.conference_kicked, R.string.join,
671									joinMuc);
672							break;
673						default:
674							break;
675					}
676						}
677				conversation.populateWithMessages(ConversationFragment.this.messageList);
678				for (final Message message : this.messageList) {
679					if (message.getEncryption() == Message.ENCRYPTION_PGP
680							&& (message.getStatus() == Message.STATUS_RECEIVED || message
681								.getStatus() >= Message.STATUS_SEND)
682							&& message.getDownloadable() == null) {
683						if (!mEncryptedMessages.contains(message)) {
684							mEncryptedMessages.add(message);
685						}
686							}
687				}
688				decryptNext();
689				updateStatusMessages();
690				this.messageListAdapter.notifyDataSetChanged();
691				updateChatMsgHint();
692				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
693					activity.sendReadMarkerIfNecessary(conversation);
694				}
695				this.updateSendButton();
696			}
697		}
698	}
699
700	private void decryptNext() {
701		Message next = this.mEncryptedMessages.peek();
702		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
703
704		if (next != null && engine != null && !mDecryptJobRunning) {
705			mDecryptJobRunning = true;
706			engine.decrypt(next, new UiCallback<Message>() {
707
708				@Override
709				public void userInputRequried(PendingIntent pi, Message message) {
710					mDecryptJobRunning = false;
711					askForPassphraseIntent = pi.getIntentSender();
712					showSnackbar(R.string.openpgp_messages_found,
713							R.string.decrypt, clickToDecryptListener);
714				}
715
716				@Override
717				public void success(Message message) {
718					mDecryptJobRunning = false;
719					try {
720						mEncryptedMessages.remove();
721					} catch (final NoSuchElementException ignored) {
722
723					}
724					activity.xmppConnectionService.updateMessage(message);
725				}
726
727				@Override
728				public void error(int error, Message message) {
729					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
730					mDecryptJobRunning = false;
731					try {
732						mEncryptedMessages.remove();
733					} catch (final NoSuchElementException ignored) {
734
735					}
736					activity.xmppConnectionService.updateConversationUi();
737				}
738			});
739		}
740	}
741
742	private void messageSent() {
743		int size = this.messageList.size();
744		messagesView.setSelection(size - 1);
745		mEditMessage.setText("");
746		updateChatMsgHint();
747	}
748
749	public void updateSendButton() {
750		Conversation c = this.conversation;
751		if (activity.useSendButtonToIndicateStatus() && c != null
752				&& c.getAccount().getStatus() == Account.State.ONLINE) {
753			if (c.getMode() == Conversation.MODE_SINGLE) {
754				switch (c.getContact().getMostAvailableStatus()) {
755					case Presences.CHAT:
756						this.mSendButton
757							.setImageResource(R.drawable.ic_action_send_now_online);
758						break;
759					case Presences.ONLINE:
760						this.mSendButton
761							.setImageResource(R.drawable.ic_action_send_now_online);
762						break;
763					case Presences.AWAY:
764						this.mSendButton
765							.setImageResource(R.drawable.ic_action_send_now_away);
766						break;
767					case Presences.XA:
768						this.mSendButton
769							.setImageResource(R.drawable.ic_action_send_now_away);
770						break;
771					case Presences.DND:
772						this.mSendButton
773							.setImageResource(R.drawable.ic_action_send_now_dnd);
774						break;
775					default:
776						this.mSendButton
777							.setImageResource(R.drawable.ic_action_send_now_offline);
778						break;
779				}
780			} else if (c.getMode() == Conversation.MODE_MULTI) {
781				if (c.getMucOptions().online()) {
782					this.mSendButton
783						.setImageResource(R.drawable.ic_action_send_now_online);
784				} else {
785					this.mSendButton
786						.setImageResource(R.drawable.ic_action_send_now_offline);
787				}
788			} else {
789				this.mSendButton
790					.setImageResource(R.drawable.ic_action_send_now_offline);
791			}
792		} else {
793			this.mSendButton
794				.setImageResource(R.drawable.ic_action_send_now_offline);
795		}
796	}
797
798	protected void updateStatusMessages() {
799		synchronized (this.messageList) {
800			if (conversation.getMode() == Conversation.MODE_SINGLE) {
801				for (int i = this.messageList.size() - 1; i >= 0; --i) {
802					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
803						return;
804					} else {
805						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
806							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
807							return;
808						}
809					}
810				}
811			}
812		}
813	}
814
815	protected void makeFingerprintWarning() {
816		if (conversation.smpRequested()) {
817			showSnackbar(R.string.smp_requested, R.string.verify, new OnClickListener() {
818				@Override
819				public void onClick(View view) {
820					Intent intent = new Intent(activity, VerifyOTRActivity.class);
821					intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
822					intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
823					intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
824					intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
825					startActivity(intent);
826				}
827			});
828		} else if (conversation.hasValidOtrSession() && (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
829				&& (!conversation.isOtrFingerprintVerified())) {
830			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
831				}
832	}
833
834	protected void showSnackbar(final int message, final int action,
835			final OnClickListener clickListener) {
836		snackbar.setVisibility(View.VISIBLE);
837		snackbar.setOnClickListener(null);
838		snackbarMessage.setText(message);
839		snackbarMessage.setOnClickListener(null);
840		snackbarAction.setVisibility(View.VISIBLE);
841		snackbarAction.setText(action);
842		snackbarAction.setOnClickListener(clickListener);
843	}
844
845	protected void hideSnackbar() {
846		snackbar.setVisibility(View.GONE);
847	}
848
849	protected void sendPlainTextMessage(Message message) {
850		ConversationActivity activity = (ConversationActivity) getActivity();
851		activity.xmppConnectionService.sendMessage(message);
852		messageSent();
853	}
854
855	protected void sendPgpMessage(final Message message) {
856		final ConversationActivity activity = (ConversationActivity) getActivity();
857		final XmppConnectionService xmppService = activity.xmppConnectionService;
858		final Contact contact = message.getConversation().getContact();
859		if (activity.hasPgp()) {
860			if (conversation.getMode() == Conversation.MODE_SINGLE) {
861				if (contact.getPgpKeyId() != 0) {
862					xmppService.getPgpEngine().hasKey(contact,
863							new UiCallback<Contact>() {
864
865								@Override
866								public void userInputRequried(PendingIntent pi,
867										Contact contact) {
868									activity.runIntent(
869											pi,
870											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
871								}
872
873								@Override
874								public void success(Contact contact) {
875									messageSent();
876									activity.encryptTextMessage(message);
877								}
878
879								@Override
880								public void error(int error, Contact contact) {
881
882								}
883							});
884
885				} else {
886					showNoPGPKeyDialog(false,
887							new DialogInterface.OnClickListener() {
888
889								@Override
890								public void onClick(DialogInterface dialog,
891										int which) {
892									conversation
893										.setNextEncryption(Message.ENCRYPTION_NONE);
894									xmppService.databaseBackend
895										.updateConversation(conversation);
896									message.setEncryption(Message.ENCRYPTION_NONE);
897									xmppService.sendMessage(message);
898									messageSent();
899								}
900							});
901				}
902			} else {
903				if (conversation.getMucOptions().pgpKeysInUse()) {
904					if (!conversation.getMucOptions().everybodyHasKeys()) {
905						Toast warning = Toast
906							.makeText(getActivity(),
907									R.string.missing_public_keys,
908									Toast.LENGTH_LONG);
909						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
910						warning.show();
911					}
912					activity.encryptTextMessage(message);
913					messageSent();
914				} else {
915					showNoPGPKeyDialog(true,
916							new DialogInterface.OnClickListener() {
917
918								@Override
919								public void onClick(DialogInterface dialog,
920										int which) {
921									conversation
922										.setNextEncryption(Message.ENCRYPTION_NONE);
923									message.setEncryption(Message.ENCRYPTION_NONE);
924									xmppService.databaseBackend
925										.updateConversation(conversation);
926									xmppService.sendMessage(message);
927									messageSent();
928								}
929							});
930				}
931			}
932		} else {
933			activity.showInstallPgpDialog();
934		}
935	}
936
937	public void showNoPGPKeyDialog(boolean plural,
938			DialogInterface.OnClickListener listener) {
939		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
940		builder.setIconAttribute(android.R.attr.alertDialogIcon);
941		if (plural) {
942			builder.setTitle(getString(R.string.no_pgp_keys));
943			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
944		} else {
945			builder.setTitle(getString(R.string.no_pgp_key));
946			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
947		}
948		builder.setNegativeButton(getString(R.string.cancel), null);
949		builder.setPositiveButton(getString(R.string.send_unencrypted),
950				listener);
951		builder.create().show();
952	}
953
954	protected void sendOtrMessage(final Message message) {
955		final ConversationActivity activity = (ConversationActivity) getActivity();
956		final XmppConnectionService xmppService = activity.xmppConnectionService;
957		activity.selectPresence(message.getConversation(),
958				new OnPresenceSelected() {
959
960					@Override
961					public void onPresenceSelected() {
962						message.setCounterpart(conversation.getNextCounterpart());
963						xmppService.sendMessage(message);
964						messageSent();
965					}
966				});
967	}
968
969	public void appendText(String text) {
970		String previous = this.mEditMessage.getText().toString();
971		if (previous.length() != 0 && !previous.endsWith(" ")) {
972			text = " " + text;
973		}
974		this.mEditMessage.append(text);
975	}
976
977}