1package eu.siacs.conversations.ui;
  2
  3import android.app.AlertDialog;
  4import android.app.Fragment;
  5import android.app.PendingIntent;
  6import android.content.Context;
  7import android.content.DialogInterface;
  8import android.content.Intent;
  9import android.content.IntentSender;
 10import android.content.IntentSender.SendIntentException;
 11import android.os.Bundle;
 12import android.view.ContextMenu;
 13import android.view.ContextMenu.ContextMenuInfo;
 14import android.view.Gravity;
 15import android.view.KeyEvent;
 16import android.view.LayoutInflater;
 17import android.view.MenuItem;
 18import android.view.View;
 19import android.view.View.OnClickListener;
 20import android.view.ViewGroup;
 21import android.view.inputmethod.EditorInfo;
 22import android.view.inputmethod.InputMethodManager;
 23import android.widget.AbsListView;
 24import android.widget.AbsListView.OnScrollListener;
 25import android.widget.AdapterView;
 26import android.widget.AdapterView.AdapterContextMenuInfo;
 27import android.widget.ImageButton;
 28import android.widget.ListView;
 29import android.widget.RelativeLayout;
 30import android.widget.TextView;
 31import android.widget.TextView.OnEditorActionListener;
 32import android.widget.Toast;
 33
 34import net.java.otr4j.session.SessionStatus;
 35
 36import java.util.ArrayList;
 37import java.util.List;
 38import java.util.NoSuchElementException;
 39import java.util.concurrent.ConcurrentLinkedQueue;
 40
 41import eu.siacs.conversations.R;
 42import eu.siacs.conversations.crypto.PgpEngine;
 43import eu.siacs.conversations.entities.Account;
 44import eu.siacs.conversations.entities.Contact;
 45import eu.siacs.conversations.entities.Conversation;
 46import eu.siacs.conversations.entities.Downloadable;
 47import eu.siacs.conversations.entities.DownloadableFile;
 48import eu.siacs.conversations.entities.DownloadablePlaceholder;
 49import eu.siacs.conversations.entities.Message;
 50import eu.siacs.conversations.entities.MucOptions;
 51import eu.siacs.conversations.entities.Presences;
 52import eu.siacs.conversations.services.XmppConnectionService;
 53import eu.siacs.conversations.ui.EditMessage.OnEnterPressed;
 54import eu.siacs.conversations.ui.XmppActivity.OnPresenceSelected;
 55import eu.siacs.conversations.ui.XmppActivity.OnValueEdited;
 56import eu.siacs.conversations.ui.adapter.MessageAdapter;
 57import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureClicked;
 58import eu.siacs.conversations.ui.adapter.MessageAdapter.OnContactPictureLongClicked;
 59import eu.siacs.conversations.xmpp.jid.Jid;
 60
 61public class ConversationFragment extends Fragment {
 62
 63	protected Conversation conversation;
 64	private OnClickListener leaveMuc = new OnClickListener() {
 65
 66		@Override
 67		public void onClick(View v) {
 68			activity.endConversation(conversation);
 69		}
 70	};
 71	private OnClickListener joinMuc = new OnClickListener() {
 72
 73		@Override
 74		public void onClick(View v) {
 75			activity.xmppConnectionService.joinMuc(conversation);
 76		}
 77	};
 78	private OnClickListener enterPassword = new OnClickListener() {
 79
 80		@Override
 81		public void onClick(View v) {
 82			MucOptions muc = conversation.getMucOptions();
 83			String password = muc.getPassword();
 84			if (password == null) {
 85				password = "";
 86			}
 87			activity.quickPasswordEdit(password, new OnValueEdited() {
 88
 89				@Override
 90				public void onValueEdited(String value) {
 91					activity.xmppConnectionService.providePasswordForMuc(
 92							conversation, value);
 93				}
 94			});
 95		}
 96	};
 97	protected ListView messagesView;
 98	final protected List<Message> messageList = new ArrayList<>();
 99	protected MessageAdapter messageListAdapter;
100	protected Contact contact;
101	private EditMessage mEditMessage;
102	private ImageButton mSendButton;
103	private RelativeLayout snackbar;
104	private TextView snackbarMessage;
105	private TextView snackbarAction;
106	private boolean messagesLoaded = true;
107	private Toast messageLoaderToast;
108
109	private OnScrollListener mOnScrollListener = new OnScrollListener() {
110
111		@Override
112		public void onScrollStateChanged(AbsListView view, int scrollState) {
113			// TODO Auto-generated method stub
114
115		}
116
117		@Override
118		public void onScroll(AbsListView view, int firstVisibleItem,
119				int visibleItemCount, int totalItemCount) {
120			synchronized (ConversationFragment.this.messageList) {
121				if (firstVisibleItem < 5 && messagesLoaded && messageList.size() > 0) {
122					long timestamp = ConversationFragment.this.messageList.get(0).getTimeSent();
123					messagesLoaded = false;
124					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
125						@Override
126						public void onMoreMessagesLoaded(final int count, Conversation conversation) {
127							if (ConversationFragment.this.conversation != conversation) {
128								return;
129							}
130							activity.runOnUiThread(new Runnable() {
131								@Override
132								public void run() {
133									final int oldPosition = messagesView.getFirstVisiblePosition();
134									View v = messagesView.getChildAt(0);
135									final int pxOffset = (v == null) ? 0 : v.getTop();
136									ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
137									updateStatusMessages();
138									messageListAdapter.notifyDataSetChanged();
139									if (count != 0) {
140										final int newPosition = oldPosition + count;
141										int offset = 0;
142										try {
143											Message tmpMessage = messageList.get(newPosition);
144
145											while(tmpMessage.wasMergedIntoPrevious()) {
146												offset++;
147												tmpMessage = tmpMessage.prev();
148											}
149										} catch (final IndexOutOfBoundsException ignored) {
150
151										}
152										messagesView.setSelectionFromTop(newPosition - offset, pxOffset);
153										messagesLoaded = true;
154										if (messageLoaderToast != null) {
155											messageLoaderToast.cancel();
156										}
157									}
158								}
159							});
160						}
161
162						@Override
163						public void informUser(final int resId) {
164
165							activity.runOnUiThread(new Runnable() {
166								@Override
167								public void run() {
168									if (messageLoaderToast != null) {
169										messageLoaderToast.cancel();
170									}
171									if (ConversationFragment.this.conversation != conversation) {
172										return;
173									}
174									messageLoaderToast = Toast.makeText(activity,resId,Toast.LENGTH_LONG);
175									messageLoaderToast.show();
176								}
177							});
178
179						}
180					});
181
182				}
183			}
184		}
185	};
186	private IntentSender askForPassphraseIntent = null;
187	protected OnClickListener clickToDecryptListener = new OnClickListener() {
188
189		@Override
190		public void onClick(View v) {
191			if (activity.hasPgp() && askForPassphraseIntent != null) {
192				try {
193					getActivity().startIntentSenderForResult(
194							askForPassphraseIntent,
195							ConversationActivity.REQUEST_DECRYPT_PGP, null, 0,
196							0, 0);
197				} catch (SendIntentException e) {
198					//
199				}
200			}
201		}
202	};
203	protected OnClickListener clickToVerify = new OnClickListener() {
204
205		@Override
206		public void onClick(View v) {
207			activity.verifyOtrSessionDialog(conversation,v);
208		}
209	};
210	private ConcurrentLinkedQueue<Message> mEncryptedMessages = new ConcurrentLinkedQueue<>();
211	private boolean mDecryptJobRunning = false;
212	private OnEditorActionListener mEditorActionListener = new OnEditorActionListener() {
213
214		@Override
215		public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
216			if (actionId == EditorInfo.IME_ACTION_SEND) {
217				InputMethodManager imm = (InputMethodManager) v.getContext()
218					.getSystemService(Context.INPUT_METHOD_SERVICE);
219				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
220				sendMessage();
221				return true;
222			} else {
223				return false;
224			}
225		}
226	};
227	private OnClickListener mSendButtonListener = new OnClickListener() {
228
229		@Override
230		public void onClick(View v) {
231			sendMessage();
232		}
233	};
234	private OnClickListener clickToMuc = new OnClickListener() {
235
236		@Override
237		public void onClick(View v) {
238			Intent intent = new Intent(getActivity(),
239					ConferenceDetailsActivity.class);
240			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
241			intent.putExtra("uuid", conversation.getUuid());
242			startActivity(intent);
243		}
244	};
245	private ConversationActivity activity;
246	private Message selectedMessage;
247
248	private void sendMessage() {
249		if (this.conversation == null) {
250			return;
251		}
252		if (mEditMessage.getText().length() < 1) {
253			if (this.conversation.getMode() == Conversation.MODE_MULTI) {
254				conversation.setNextCounterpart(null);
255				updateChatMsgHint();
256			}
257			return;
258		}
259		Message message = new Message(conversation, mEditMessage.getText()
260				.toString(), conversation.getNextEncryption(activity
261					.forceEncryption()));
262		if (conversation.getMode() == Conversation.MODE_MULTI) {
263			if (conversation.getNextCounterpart() != null) {
264				message.setCounterpart(conversation.getNextCounterpart());
265				message.setType(Message.TYPE_PRIVATE);
266				conversation.setNextCounterpart(null);
267			}
268		}
269		if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_OTR) {
270			sendOtrMessage(message);
271		} else if (conversation.getNextEncryption(activity.forceEncryption()) == Message.ENCRYPTION_PGP) {
272			sendPgpMessage(message);
273		} else {
274			sendPlainTextMessage(message);
275		}
276	}
277
278	public void updateChatMsgHint() {
279		if (conversation.getMode() == Conversation.MODE_MULTI
280				&& conversation.getNextCounterpart() != null) {
281			this.mEditMessage.setHint(getString(
282						R.string.send_private_message_to,
283						conversation.getNextCounterpart().getResourcepart()));
284		} else {
285			switch (conversation.getNextEncryption(activity.forceEncryption())) {
286				case Message.ENCRYPTION_NONE:
287					mEditMessage
288						.setHint(getString(R.string.send_plain_text_message));
289					break;
290				case Message.ENCRYPTION_OTR:
291					mEditMessage.setHint(getString(R.string.send_otr_message));
292					break;
293				case Message.ENCRYPTION_PGP:
294					mEditMessage.setHint(getString(R.string.send_pgp_message));
295					break;
296				default:
297					break;
298			}
299		}
300	}
301
302	@Override
303	public View onCreateView(final LayoutInflater inflater,
304			ViewGroup container, Bundle savedInstanceState) {
305		final View view = inflater.inflate(R.layout.fragment_conversation,
306				container, false);
307		mEditMessage = (EditMessage) view.findViewById(R.id.textinput);
308		mEditMessage.setOnClickListener(new OnClickListener() {
309
310			@Override
311			public void onClick(View v) {
312				activity.hideConversationsOverview();
313			}
314		});
315		mEditMessage.setOnEditorActionListener(mEditorActionListener);
316		mEditMessage.setOnEnterPressedListener(new OnEnterPressed() {
317
318			@Override
319			public void onEnterPressed() {
320				sendMessage();
321			}
322		});
323
324		mSendButton = (ImageButton) view.findViewById(R.id.textSendButton);
325		mSendButton.setOnClickListener(this.mSendButtonListener);
326
327		snackbar = (RelativeLayout) view.findViewById(R.id.snackbar);
328		snackbarMessage = (TextView) view.findViewById(R.id.snackbar_message);
329		snackbarAction = (TextView) view.findViewById(R.id.snackbar_action);
330
331		messagesView = (ListView) view.findViewById(R.id.messages_view);
332		messagesView.setOnScrollListener(mOnScrollListener);
333		messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
334		messageListAdapter = new MessageAdapter((ConversationActivity) getActivity(), this.messageList);
335		messageListAdapter.setOnContactPictureClicked(new OnContactPictureClicked() {
336
337			@Override
338			public void onContactPictureClicked(Message message) {
339				if (message.getStatus() <= Message.STATUS_RECEIVED) {
340					if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
341						if (message.getCounterpart() != null) {
342							if (!message.getCounterpart().isBareJid()) {
343								highlightInConference(message.getCounterpart().getResourcepart());
344							} else {
345								highlightInConference(message.getCounterpart().toString());
346							}
347						}
348					} else {
349						Contact contact = message.getConversation()
350							.getContact();
351						if (contact.showInRoster()) {
352							activity.switchToContactDetails(contact);
353						} else {
354							activity.showAddToRosterDialog(message
355									.getConversation());
356						}
357					}
358				} else {
359					Account account = message.getConversation().getAccount();
360					Intent intent = new Intent(activity, EditAccountActivity.class);
361					intent.putExtra("jid", account.getJid().toBareJid().toString());
362					startActivity(intent);
363				}
364			}
365		});
366		messageListAdapter
367			.setOnContactPictureLongClicked(new OnContactPictureLongClicked() {
368
369				@Override
370				public void onContactPictureLongClicked(Message message) {
371					if (message.getStatus() <= Message.STATUS_RECEIVED) {
372						if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
373							if (message.getCounterpart() != null) {
374								privateMessageWith(message.getCounterpart());
375							}
376						}
377					}
378				}
379			});
380		messagesView.setAdapter(messageListAdapter);
381
382		registerForContextMenu(messagesView);
383
384		return view;
385	}
386
387	@Override
388	public void onCreateContextMenu(ContextMenu menu, View v,
389			ContextMenuInfo menuInfo) {
390		synchronized (this.messageList) {
391			super.onCreateContextMenu(menu, v, menuInfo);
392			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
393			this.selectedMessage = this.messageList.get(acmi.position);
394			populateContextMenu(menu);
395		}
396	}
397
398	private void populateContextMenu(ContextMenu menu) {
399		if (this.selectedMessage.getType() != Message.TYPE_STATUS) {
400			activity.getMenuInflater().inflate(R.menu.message_context, menu);
401			menu.setHeaderTitle(R.string.message_options);
402			MenuItem copyText = menu.findItem(R.id.copy_text);
403			MenuItem shareImage = menu.findItem(R.id.share_image);
404			MenuItem sendAgain = menu.findItem(R.id.send_again);
405			MenuItem copyUrl = menu.findItem(R.id.copy_url);
406			MenuItem downloadImage = menu.findItem(R.id.download_image);
407			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
408			if (this.selectedMessage.getType() != Message.TYPE_TEXT
409					|| this.selectedMessage.getDownloadable() != null) {
410				copyText.setVisible(false);
411					}
412			if (this.selectedMessage.getType() != Message.TYPE_IMAGE
413					|| this.selectedMessage.getDownloadable() != null) {
414				shareImage.setVisible(false);
415					}
416			if (this.selectedMessage.getStatus() != Message.STATUS_SEND_FAILED) {
417				sendAgain.setVisible(false);
418			}
419			if ((this.selectedMessage.getType() != Message.TYPE_IMAGE && this.selectedMessage
420						.getDownloadable() == null)
421					|| this.selectedMessage.getImageParams().url == null) {
422				copyUrl.setVisible(false);
423					}
424			if (this.selectedMessage.getType() != Message.TYPE_TEXT
425					|| this.selectedMessage.getDownloadable() != null
426					|| !this.selectedMessage.bodyContainsDownloadable()) {
427				downloadImage.setVisible(false);
428					}
429			if (this.selectedMessage.getDownloadable() == null
430					|| this.selectedMessage.getDownloadable() instanceof DownloadablePlaceholder) {
431				cancelTransmission.setVisible(false);
432					}
433		}
434	}
435
436	@Override
437	public boolean onContextItemSelected(MenuItem item) {
438		switch (item.getItemId()) {
439			case R.id.share_image:
440				shareImage(selectedMessage);
441				return true;
442			case R.id.copy_text:
443				copyText(selectedMessage);
444				return true;
445			case R.id.send_again:
446				resendMessage(selectedMessage);
447				return true;
448			case R.id.copy_url:
449				copyUrl(selectedMessage);
450				return true;
451			case R.id.download_image:
452				downloadImage(selectedMessage);
453				return true;
454			case R.id.cancel_transmission:
455				cancelTransmission(selectedMessage);
456				return true;
457			default:
458				return super.onContextItemSelected(item);
459		}
460	}
461
462	private void shareImage(Message message) {
463		Intent shareIntent = new Intent();
464		shareIntent.setAction(Intent.ACTION_SEND);
465		shareIntent.putExtra(Intent.EXTRA_STREAM,
466				activity.xmppConnectionService.getFileBackend()
467				.getJingleFileUri(message));
468		shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
469		shareIntent.setType("image/webp");
470		activity.startActivity(Intent.createChooser(shareIntent,
471					getText(R.string.share_with)));
472	}
473
474	private void copyText(Message message) {
475		if (activity.copyTextToClipboard(message.getMergedBody(),
476					R.string.message_text)) {
477			Toast.makeText(activity, R.string.message_copied_to_clipboard,
478					Toast.LENGTH_SHORT).show();
479		}
480	}
481
482	private void resendMessage(Message message) {
483		if (message.getType() == Message.TYPE_FILE || message.getType() == Message.TYPE_IMAGE) {
484			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
485			if (!file.exists()) {
486				Toast.makeText(activity,R.string.file_deleted,Toast.LENGTH_SHORT).show();
487				message.setDownloadable(new DownloadablePlaceholder(Downloadable.STATUS_DELETED));
488				return;
489			}
490		}
491		activity.xmppConnectionService.resendFailedMessages(message);
492	}
493
494	private void copyUrl(Message message) {
495		if (activity.copyTextToClipboard(
496					message.getImageParams().url.toString(), R.string.image_url)) {
497			Toast.makeText(activity, R.string.url_copied_to_clipboard,
498					Toast.LENGTH_SHORT).show();
499					}
500	}
501
502	private void downloadImage(Message message) {
503		activity.xmppConnectionService.getHttpConnectionManager()
504			.createNewConnection(message);
505	}
506
507	private void cancelTransmission(Message message) {
508		Downloadable downloadable = message.getDownloadable();
509		if (downloadable!=null) {
510			downloadable.cancel();
511		}
512	}
513
514	protected void privateMessageWith(final Jid counterpart) {
515		this.mEditMessage.setText("");
516		this.conversation.setNextCounterpart(counterpart);
517		updateChatMsgHint();
518	}
519
520	protected void highlightInConference(String nick) {
521		String oldString = mEditMessage.getText().toString().trim();
522		if (oldString.isEmpty() || mEditMessage.getSelectionStart() == 0) {
523			mEditMessage.getText().insert(0, nick + ": ");
524		} else {
525			if (mEditMessage.getText().charAt(
526						mEditMessage.getSelectionStart() - 1) != ' ') {
527				nick = " " + nick;
528						}
529			mEditMessage.getText().insert(mEditMessage.getSelectionStart(),
530					nick + " ");
531		}
532	}
533
534	@Override
535	public void onStop() {
536		mDecryptJobRunning = false;
537		super.onStop();
538		if (this.conversation != null) {
539			this.conversation.setNextMessage(mEditMessage.getText().toString());
540		}
541	}
542
543	public void reInit(Conversation conversation) {
544		if (conversation == null) {
545			return;
546		}
547		if (this.conversation != null) {
548			this.conversation.setNextMessage(mEditMessage.getText().toString());
549			this.conversation.trim();
550		}
551		this.activity = (ConversationActivity) getActivity();
552		this.conversation = conversation;
553		this.mDecryptJobRunning = false;
554		this.mEncryptedMessages.clear();
555		if (this.conversation.getMode() == Conversation.MODE_MULTI) {
556			this.conversation.setNextCounterpart(null);
557		}
558		this.mEditMessage.setText("");
559		this.mEditMessage.append(this.conversation.getNextMessage());
560		this.messagesView.invalidateViews();
561		updateMessages();
562		this.messagesLoaded = true;
563		int size = this.messageList.size();
564		if (size > 0) {
565			messagesView.setSelection(size - 1);
566		}
567	}
568
569	public void updateMessages() {
570		synchronized (this.messageList) {
571			if (getView() == null) {
572				return;
573			}
574			hideSnackbar();
575			final ConversationActivity activity = (ConversationActivity) getActivity();
576			if (this.conversation != null) {
577				final Contact contact = this.conversation.getContact();
578				if (this.conversation.isBlocked()) {
579					showSnackbar(R.string.contact_blocked, R.string.unblock,
580							new OnClickListener() {
581								@Override
582								public void onClick(final View v) {
583									v.post(new Runnable() {
584										@Override
585										public void run() {
586											v.setVisibility(View.INVISIBLE);
587										}
588									});
589									if (conversation.isDomainBlocked()) {
590										BlockContactDialog.show(getActivity(), ((ConversationActivity) getActivity()).xmppConnectionService, conversation);
591									} else {
592										((ConversationActivity) getActivity()).unblockConversation(conversation);
593									}
594								}
595							});
596				} else if (this.conversation.isMuted()) {
597					showSnackbar(R.string.notifications_disabled, R.string.enable,
598							new OnClickListener() {
599
600								@Override
601								public void onClick(final View v) {
602									activity.unmuteConversation(conversation);
603								}
604							});
605				} else if (!contact.showInRoster()
606						&& contact
607						.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
608					showSnackbar(R.string.contact_added_you, R.string.add_back,
609							new OnClickListener() {
610
611								@Override
612								public void onClick(View v) {
613									activity.xmppConnectionService
614										.createContact(contact);
615									activity.switchToContactDetails(contact);
616								}
617							});
618				} else if (conversation.getMode() == Conversation.MODE_SINGLE) {
619					makeFingerprintWarning();
620				} else if (!conversation.getMucOptions().online()
621						&& conversation.getAccount().getStatus() == Account.State.ONLINE) {
622					int error = conversation.getMucOptions().getError();
623					switch (error) {
624						case MucOptions.ERROR_NICK_IN_USE:
625							showSnackbar(R.string.nick_in_use, R.string.edit,
626									clickToMuc);
627							break;
628						case MucOptions.ERROR_UNKNOWN:
629							showSnackbar(R.string.conference_not_found,
630									R.string.leave, leaveMuc);
631							break;
632						case MucOptions.ERROR_PASSWORD_REQUIRED:
633							showSnackbar(R.string.conference_requires_password,
634									R.string.enter_password, enterPassword);
635							break;
636						case MucOptions.ERROR_BANNED:
637							showSnackbar(R.string.conference_banned,
638									R.string.leave, leaveMuc);
639							break;
640						case MucOptions.ERROR_MEMBERS_ONLY:
641							showSnackbar(R.string.conference_members_only,
642									R.string.leave, leaveMuc);
643							break;
644						case MucOptions.KICKED_FROM_ROOM:
645							showSnackbar(R.string.conference_kicked, R.string.join,
646									joinMuc);
647							break;
648						default:
649							break;
650					}
651						}
652				conversation.populateWithMessages(ConversationFragment.this.messageList);
653				for (Message message : this.messageList) {
654					if (message.getEncryption() == Message.ENCRYPTION_PGP
655							&& (message.getStatus() == Message.STATUS_RECEIVED || message
656								.getStatus() >= Message.STATUS_SEND)
657							&& message.getDownloadable() == null) {
658						if (!mEncryptedMessages.contains(message)) {
659							mEncryptedMessages.add(message);
660						}
661							}
662				}
663				decryptNext();
664				updateStatusMessages();
665				this.messageListAdapter.notifyDataSetChanged();
666				updateChatMsgHint();
667				if (!activity.isConversationsOverviewVisable() || !activity.isConversationsOverviewHideable()) {
668					activity.xmppConnectionService.markRead(conversation, true);
669					activity.updateConversationList();
670				}
671				this.updateSendButton();
672			}
673		}
674	}
675
676	private void decryptNext() {
677		Message next = this.mEncryptedMessages.peek();
678		PgpEngine engine = activity.xmppConnectionService.getPgpEngine();
679
680		if (next != null && engine != null && !mDecryptJobRunning) {
681			mDecryptJobRunning = true;
682			engine.decrypt(next, new UiCallback<Message>() {
683
684				@Override
685				public void userInputRequried(PendingIntent pi, Message message) {
686					mDecryptJobRunning = false;
687					askForPassphraseIntent = pi.getIntentSender();
688					showSnackbar(R.string.openpgp_messages_found,
689							R.string.decrypt, clickToDecryptListener);
690				}
691
692				@Override
693				public void success(Message message) {
694					mDecryptJobRunning = false;
695					try {
696						mEncryptedMessages.remove();
697					} catch (final NoSuchElementException ignored) {
698
699					}
700					activity.xmppConnectionService.updateMessage(message);
701				}
702
703				@Override
704				public void error(int error, Message message) {
705					message.setEncryption(Message.ENCRYPTION_DECRYPTION_FAILED);
706					mDecryptJobRunning = false;
707					try {
708						mEncryptedMessages.remove();
709					} catch (final NoSuchElementException ignored) {
710
711					}
712					activity.xmppConnectionService.updateConversationUi();
713				}
714			});
715		}
716	}
717
718	private void messageSent() {
719		int size = this.messageList.size();
720		messagesView.setSelection(size - 1);
721		mEditMessage.setText("");
722		updateChatMsgHint();
723	}
724
725	public void updateSendButton() {
726		Conversation c = this.conversation;
727		if (activity.useSendButtonToIndicateStatus() && c != null
728				&& c.getAccount().getStatus() == Account.State.ONLINE) {
729			if (c.getMode() == Conversation.MODE_SINGLE) {
730				switch (c.getContact().getMostAvailableStatus()) {
731					case Presences.CHAT:
732						this.mSendButton
733							.setImageResource(R.drawable.ic_action_send_now_online);
734						break;
735					case Presences.ONLINE:
736						this.mSendButton
737							.setImageResource(R.drawable.ic_action_send_now_online);
738						break;
739					case Presences.AWAY:
740						this.mSendButton
741							.setImageResource(R.drawable.ic_action_send_now_away);
742						break;
743					case Presences.XA:
744						this.mSendButton
745							.setImageResource(R.drawable.ic_action_send_now_away);
746						break;
747					case Presences.DND:
748						this.mSendButton
749							.setImageResource(R.drawable.ic_action_send_now_dnd);
750						break;
751					default:
752						this.mSendButton
753							.setImageResource(R.drawable.ic_action_send_now_offline);
754						break;
755				}
756			} else if (c.getMode() == Conversation.MODE_MULTI) {
757				if (c.getMucOptions().online()) {
758					this.mSendButton
759						.setImageResource(R.drawable.ic_action_send_now_online);
760				} else {
761					this.mSendButton
762						.setImageResource(R.drawable.ic_action_send_now_offline);
763				}
764			} else {
765				this.mSendButton
766					.setImageResource(R.drawable.ic_action_send_now_offline);
767			}
768		} else {
769			this.mSendButton
770				.setImageResource(R.drawable.ic_action_send_now_offline);
771		}
772	}
773
774	protected void updateStatusMessages() {
775		synchronized (this.messageList) {
776			if (conversation.getMode() == Conversation.MODE_SINGLE) {
777				for (int i = this.messageList.size() - 1; i >= 0; --i) {
778					if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
779						return;
780					} else {
781						if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
782							this.messageList.add(i + 1,Message.createStatusMessage(conversation));
783							return;
784						}
785					}
786				}
787			}
788		}
789	}
790
791	protected void makeFingerprintWarning() {
792		if (conversation.smpRequested()) {
793			showSnackbar(R.string.smp_requested, R.string.verify, new OnClickListener() {
794				@Override
795				public void onClick(View view) {
796					Intent intent = new Intent(activity, VerifyOTRActivity.class);
797					intent.setAction(VerifyOTRActivity.ACTION_VERIFY_CONTACT);
798					intent.putExtra("contact", conversation.getContact().getJid().toBareJid().toString());
799					intent.putExtra("account", conversation.getAccount().getJid().toBareJid().toString());
800					intent.putExtra("mode",VerifyOTRActivity.MODE_ANSWER_QUESTION);
801					startActivity(intent);
802				}
803			});
804		} else if (conversation.hasValidOtrSession() && (conversation.getOtrSession().getSessionStatus() == SessionStatus.ENCRYPTED)
805				&& (!conversation.isOtrFingerprintVerified())) {
806			showSnackbar(R.string.unknown_otr_fingerprint, R.string.verify, clickToVerify);
807				}
808	}
809
810	protected void showSnackbar(final int message, final int action,
811			final OnClickListener clickListener) {
812		snackbar.setVisibility(View.VISIBLE);
813		snackbar.setOnClickListener(null);
814		snackbarMessage.setText(message);
815		snackbarMessage.setOnClickListener(null);
816		snackbarAction.setVisibility(View.VISIBLE);
817		snackbarAction.setText(action);
818		snackbarAction.setOnClickListener(clickListener);
819	}
820
821	protected void hideSnackbar() {
822		snackbar.setVisibility(View.GONE);
823	}
824
825	protected void sendPlainTextMessage(Message message) {
826		ConversationActivity activity = (ConversationActivity) getActivity();
827		activity.xmppConnectionService.sendMessage(message);
828		messageSent();
829	}
830
831	protected void sendPgpMessage(final Message message) {
832		final ConversationActivity activity = (ConversationActivity) getActivity();
833		final XmppConnectionService xmppService = activity.xmppConnectionService;
834		final Contact contact = message.getConversation().getContact();
835		if (activity.hasPgp()) {
836			if (conversation.getMode() == Conversation.MODE_SINGLE) {
837				if (contact.getPgpKeyId() != 0) {
838					xmppService.getPgpEngine().hasKey(contact,
839							new UiCallback<Contact>() {
840
841								@Override
842								public void userInputRequried(PendingIntent pi,
843										Contact contact) {
844									activity.runIntent(
845											pi,
846											ConversationActivity.REQUEST_ENCRYPT_MESSAGE);
847								}
848
849								@Override
850								public void success(Contact contact) {
851									messageSent();
852									activity.encryptTextMessage(message);
853								}
854
855								@Override
856								public void error(int error, Contact contact) {
857
858								}
859							});
860
861				} else {
862					showNoPGPKeyDialog(false,
863							new DialogInterface.OnClickListener() {
864
865								@Override
866								public void onClick(DialogInterface dialog,
867										int which) {
868									conversation
869										.setNextEncryption(Message.ENCRYPTION_NONE);
870									xmppService.databaseBackend
871										.updateConversation(conversation);
872									message.setEncryption(Message.ENCRYPTION_NONE);
873									xmppService.sendMessage(message);
874									messageSent();
875								}
876							});
877				}
878			} else {
879				if (conversation.getMucOptions().pgpKeysInUse()) {
880					if (!conversation.getMucOptions().everybodyHasKeys()) {
881						Toast warning = Toast
882							.makeText(getActivity(),
883									R.string.missing_public_keys,
884									Toast.LENGTH_LONG);
885						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
886						warning.show();
887					}
888					activity.encryptTextMessage(message);
889					messageSent();
890				} else {
891					showNoPGPKeyDialog(true,
892							new DialogInterface.OnClickListener() {
893
894								@Override
895								public void onClick(DialogInterface dialog,
896										int which) {
897									conversation
898										.setNextEncryption(Message.ENCRYPTION_NONE);
899									message.setEncryption(Message.ENCRYPTION_NONE);
900									xmppService.databaseBackend
901										.updateConversation(conversation);
902									xmppService.sendMessage(message);
903									messageSent();
904								}
905							});
906				}
907			}
908		} else {
909			activity.showInstallPgpDialog();
910		}
911	}
912
913	public void showNoPGPKeyDialog(boolean plural,
914			DialogInterface.OnClickListener listener) {
915		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
916		builder.setIconAttribute(android.R.attr.alertDialogIcon);
917		if (plural) {
918			builder.setTitle(getString(R.string.no_pgp_keys));
919			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
920		} else {
921			builder.setTitle(getString(R.string.no_pgp_key));
922			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
923		}
924		builder.setNegativeButton(getString(R.string.cancel), null);
925		builder.setPositiveButton(getString(R.string.send_unencrypted),
926				listener);
927		builder.create().show();
928	}
929
930	protected void sendOtrMessage(final Message message) {
931		final ConversationActivity activity = (ConversationActivity) getActivity();
932		final XmppConnectionService xmppService = activity.xmppConnectionService;
933		activity.selectPresence(message.getConversation(),
934				new OnPresenceSelected() {
935
936					@Override
937					public void onPresenceSelected() {
938						message.setCounterpart(conversation.getNextCounterpart());
939						xmppService.sendMessage(message);
940						messageSent();
941					}
942				});
943	}
944
945	public void appendText(String text) {
946		String previous = this.mEditMessage.getText().toString();
947		if (previous.length() != 0 && !previous.endsWith(" ")) {
948			text = " " + text;
949		}
950		this.mEditMessage.append(text);
951	}
952
953	public void clearInputField() {
954		this.mEditMessage.setText("");
955	}
956}