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