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