1package eu.siacs.conversations.ui;
   2
   3import android.Manifest;
   4import android.annotation.SuppressLint;
   5import android.app.Activity;
   6import android.content.SharedPreferences;
   7import android.content.pm.PackageManager;
   8import android.databinding.DataBindingUtil;
   9import android.net.Uri;
  10import android.os.Build;
  11import android.preference.PreferenceManager;
  12import android.provider.MediaStore;
  13import android.support.annotation.IdRes;
  14import android.support.v7.app.AlertDialog;
  15import android.app.Fragment;
  16import android.app.PendingIntent;
  17import android.content.ActivityNotFoundException;
  18import android.content.Context;
  19import android.content.DialogInterface;
  20import android.content.Intent;
  21import android.content.IntentSender.SendIntentException;
  22import android.os.Bundle;
  23import android.os.Handler;
  24import android.os.SystemClock;
  25import android.support.v13.view.inputmethod.InputConnectionCompat;
  26import android.support.v13.view.inputmethod.InputContentInfoCompat;
  27import android.text.Editable;
  28import android.util.Log;
  29import android.util.Pair;
  30import android.view.ContextMenu;
  31import android.view.ContextMenu.ContextMenuInfo;
  32import android.view.Gravity;
  33import android.view.LayoutInflater;
  34import android.view.Menu;
  35import android.view.MenuInflater;
  36import android.view.MenuItem;
  37import android.view.MotionEvent;
  38import android.view.View;
  39import android.view.View.OnClickListener;
  40import android.view.ViewGroup;
  41import android.view.inputmethod.EditorInfo;
  42import android.view.inputmethod.InputMethodManager;
  43import android.widget.AbsListView;
  44import android.widget.AbsListView.OnScrollListener;
  45import android.widget.AdapterView;
  46import android.widget.AdapterView.AdapterContextMenuInfo;
  47import android.widget.CheckBox;
  48import android.widget.ListView;
  49import android.widget.PopupMenu;
  50import android.widget.TextView.OnEditorActionListener;
  51import android.widget.Toast;
  52
  53import org.openintents.openpgp.util.OpenPgpApi;
  54
  55import java.util.ArrayList;
  56import java.util.Arrays;
  57import java.util.Collections;
  58import java.util.HashSet;
  59import java.util.Iterator;
  60import java.util.List;
  61import java.util.Set;
  62import java.util.UUID;
  63import java.util.concurrent.atomic.AtomicBoolean;
  64
  65import eu.siacs.conversations.Config;
  66import eu.siacs.conversations.R;
  67import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  68import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  69import eu.siacs.conversations.databinding.FragmentConversationBinding;
  70import eu.siacs.conversations.entities.Account;
  71import eu.siacs.conversations.entities.Blockable;
  72import eu.siacs.conversations.entities.Contact;
  73import eu.siacs.conversations.entities.Conversation;
  74import eu.siacs.conversations.entities.DownloadableFile;
  75import eu.siacs.conversations.entities.Message;
  76import eu.siacs.conversations.entities.MucOptions;
  77import eu.siacs.conversations.entities.Presence;
  78import eu.siacs.conversations.entities.ReadByMarker;
  79import eu.siacs.conversations.entities.Transferable;
  80import eu.siacs.conversations.entities.TransferablePlaceholder;
  81import eu.siacs.conversations.http.HttpDownloadConnection;
  82import eu.siacs.conversations.persistance.FileBackend;
  83import eu.siacs.conversations.services.MessageArchiveService;
  84import eu.siacs.conversations.services.XmppConnectionService;
  85import eu.siacs.conversations.ui.adapter.MessageAdapter;
  86import eu.siacs.conversations.ui.util.ActivityResult;
  87import eu.siacs.conversations.ui.util.AttachmentTool;
  88import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  89import eu.siacs.conversations.ui.util.PendingItem;
  90import eu.siacs.conversations.ui.util.PresenceSelector;
  91import eu.siacs.conversations.ui.util.SendButtonAction;
  92import eu.siacs.conversations.ui.util.SendButtonTool;
  93import eu.siacs.conversations.ui.widget.EditMessage;
  94import eu.siacs.conversations.utils.MessageUtils;
  95import eu.siacs.conversations.utils.NickValidityChecker;
  96import eu.siacs.conversations.utils.StylingHelper;
  97import eu.siacs.conversations.utils.UIHelper;
  98import eu.siacs.conversations.xmpp.XmppConnection;
  99import eu.siacs.conversations.xmpp.chatstate.ChatState;
 100import eu.siacs.conversations.xmpp.jid.InvalidJidException;
 101import eu.siacs.conversations.xmpp.jid.Jid;
 102
 103import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
 104import static eu.siacs.conversations.ui.XmppActivity.REQUEST_ANNOUNCE_PGP;
 105import static eu.siacs.conversations.ui.XmppActivity.REQUEST_CHOOSE_PGP_ID;
 106
 107
 108public class ConversationFragment extends XmppFragment implements EditMessage.KeyboardListener {
 109
 110
 111	public static final int REQUEST_SEND_MESSAGE = 0x0201;
 112	public static final int REQUEST_DECRYPT_PGP = 0x0202;
 113	public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 114	public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 115	public static final int REQUEST_TRUST_KEYS_MENU = 0x0209;
 116	public static final int REQUEST_START_DOWNLOAD = 0x0210;
 117	public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 118	public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 119	public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 120	public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 121	public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 122	public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 123	public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 124	public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 125
 126	public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 127	public static final String STATE_CONVERSATION_UUID = ConversationFragment.class.getName() + ".uuid";
 128	public static final String STATE_SCROLL_POSITION = ConversationFragment.class.getName() + ".scroll_position";
 129
 130
 131	final protected List<Message> messageList = new ArrayList<>();
 132	private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 133	private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 134	private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 135	public Uri mPendingEditorContent = null;
 136	protected MessageAdapter messageListAdapter;
 137	private Conversation conversation;
 138	private FragmentConversationBinding binding;
 139	private Toast messageLoaderToast;
 140	private ConversationActivity activity;
 141
 142	private OnClickListener clickToMuc = new OnClickListener() {
 143
 144		@Override
 145		public void onClick(View v) {
 146			Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
 147			intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
 148			intent.putExtra("uuid", conversation.getUuid());
 149			startActivity(intent);
 150		}
 151	};
 152	private OnClickListener leaveMuc = new OnClickListener() {
 153
 154		@Override
 155		public void onClick(View v) {
 156			activity.xmppConnectionService.archiveConversation(conversation);
 157			activity.onConversationArchived(conversation);
 158		}
 159	};
 160	private OnClickListener joinMuc = new OnClickListener() {
 161
 162		@Override
 163		public void onClick(View v) {
 164			activity.xmppConnectionService.joinMuc(conversation);
 165		}
 166	};
 167	private OnClickListener enterPassword = new OnClickListener() {
 168
 169		@Override
 170		public void onClick(View v) {
 171			MucOptions muc = conversation.getMucOptions();
 172			String password = muc.getPassword();
 173			if (password == null) {
 174				password = "";
 175			}
 176			activity.quickPasswordEdit(password, value -> {
 177				activity.xmppConnectionService.providePasswordForMuc(conversation, value);
 178				return null;
 179			});
 180		}
 181	};
 182	private OnScrollListener mOnScrollListener = new OnScrollListener() {
 183
 184		@Override
 185		public void onScrollStateChanged(AbsListView view, int scrollState) {
 186			// TODO Auto-generated method stub
 187
 188		}
 189
 190		@Override
 191		public void onScroll(final AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
 192			synchronized (ConversationFragment.this.messageList) {
 193				if (firstVisibleItem < 5 && conversation != null && conversation.messagesLoaded.compareAndSet(true, false) && messageList.size() > 0) {
 194					long timestamp;
 195					if (messageList.get(0).getType() == Message.TYPE_STATUS && messageList.size() >= 2) {
 196						timestamp = messageList.get(1).getTimeSent();
 197					} else {
 198						timestamp = messageList.get(0).getTimeSent();
 199					}
 200					activity.xmppConnectionService.loadMoreMessages(conversation, timestamp, new XmppConnectionService.OnMoreMessagesLoaded() {
 201						@Override
 202						public void onMoreMessagesLoaded(final int c, final Conversation conversation) {
 203							if (ConversationFragment.this.conversation != conversation) {
 204								conversation.messagesLoaded.set(true);
 205								return;
 206							}
 207							getActivity().runOnUiThread(() -> {
 208								final int oldPosition = binding.messagesView.getFirstVisiblePosition();
 209								Message message = null;
 210								int childPos;
 211								for (childPos = 0; childPos + oldPosition < messageList.size(); ++childPos) {
 212									message = messageList.get(oldPosition + childPos);
 213									if (message.getType() != Message.TYPE_STATUS) {
 214										break;
 215									}
 216								}
 217								final String uuid = message != null ? message.getUuid() : null;
 218								View v = binding.messagesView.getChildAt(childPos);
 219								final int pxOffset = (v == null) ? 0 : v.getTop();
 220								ConversationFragment.this.conversation.populateWithMessages(ConversationFragment.this.messageList);
 221								try {
 222									updateStatusMessages();
 223								} catch (IllegalStateException e) {
 224									Log.d(Config.LOGTAG, "caught illegal state exception while updating status messages");
 225								}
 226								messageListAdapter.notifyDataSetChanged();
 227								int pos = Math.max(getIndexOf(uuid, messageList), 0);
 228								binding.messagesView.setSelectionFromTop(pos, pxOffset);
 229								if (messageLoaderToast != null) {
 230									messageLoaderToast.cancel();
 231								}
 232								conversation.messagesLoaded.set(true);
 233							});
 234						}
 235
 236						@Override
 237						public void informUser(final int resId) {
 238
 239							getActivity().runOnUiThread(() -> {
 240								if (messageLoaderToast != null) {
 241									messageLoaderToast.cancel();
 242								}
 243								if (ConversationFragment.this.conversation != conversation) {
 244									return;
 245								}
 246								messageLoaderToast = Toast.makeText(view.getContext(), resId, Toast.LENGTH_LONG);
 247								messageLoaderToast.show();
 248							});
 249
 250						}
 251					});
 252
 253				}
 254			}
 255		}
 256	};
 257
 258	private EditMessage.OnCommitContentListener mEditorContentListener = new EditMessage.OnCommitContentListener() {
 259		@Override
 260		public boolean onCommitContent(InputContentInfoCompat inputContentInfo, int flags, Bundle opts, String[] contentMimeTypes) {
 261			// try to get permission to read the image, if applicable
 262			if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION) != 0) {
 263				try {
 264					inputContentInfo.requestPermission();
 265				} catch (Exception e) {
 266					Log.e(Config.LOGTAG, "InputContentInfoCompat#requestPermission() failed.", e);
 267					Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, inputContentInfo.getDescription()), Toast.LENGTH_LONG
 268					).show();
 269					return false;
 270				}
 271			}
 272			if (hasStoragePermission(REQUEST_ADD_EDITOR_CONTENT)) {
 273				attachImageToConversation(inputContentInfo.getContentUri());
 274			} else {
 275				mPendingEditorContent = inputContentInfo.getContentUri();
 276			}
 277			return true;
 278		}
 279	};
 280	private Message selectedMessage;
 281	private OnClickListener mEnableAccountListener = new OnClickListener() {
 282		@Override
 283		public void onClick(View v) {
 284			final Account account = conversation == null ? null : conversation.getAccount();
 285			if (account != null) {
 286				account.setOption(Account.OPTION_DISABLED, false);
 287				activity.xmppConnectionService.updateAccount(account);
 288			}
 289		}
 290	};
 291	private OnClickListener mUnblockClickListener = new OnClickListener() {
 292		@Override
 293		public void onClick(final View v) {
 294			v.post(() -> v.setVisibility(View.INVISIBLE));
 295			if (conversation.isDomainBlocked()) {
 296				BlockContactDialog.show(activity, conversation);
 297			} else {
 298				unblockConversation(conversation);
 299			}
 300		}
 301	};
 302	private OnClickListener mBlockClickListener = this::showBlockSubmenu;
 303	private OnClickListener mAddBackClickListener = new OnClickListener() {
 304
 305		@Override
 306		public void onClick(View v) {
 307			final Contact contact = conversation == null ? null : conversation.getContact();
 308			if (contact != null) {
 309				activity.xmppConnectionService.createContact(contact);
 310				activity.switchToContactDetails(contact);
 311			}
 312		}
 313	};
 314	private View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 315	private OnClickListener mAllowPresenceSubscription = new OnClickListener() {
 316		@Override
 317		public void onClick(View v) {
 318			final Contact contact = conversation == null ? null : conversation.getContact();
 319			if (contact != null) {
 320				activity.xmppConnectionService.sendPresencePacket(contact.getAccount(),
 321						activity.xmppConnectionService.getPresenceGenerator()
 322								.sendPresenceUpdatesTo(contact));
 323				hideSnackbar();
 324			}
 325		}
 326	};
 327
 328	protected OnClickListener clickToDecryptListener = new OnClickListener() {
 329
 330		@Override
 331		public void onClick(View v) {
 332			PendingIntent pendingIntent = conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 333			if (pendingIntent != null) {
 334				try {
 335					getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(),
 336							REQUEST_DECRYPT_PGP,
 337							null,
 338							0,
 339							0,
 340							0);
 341				} catch (SendIntentException e) {
 342					Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
 343					conversation.getAccount().getPgpDecryptionService().continueDecryption(true);
 344				}
 345			}
 346			updateSnackBar(conversation);
 347		}
 348	};
 349	private AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 350	private OnEditorActionListener mEditorActionListener = (v, actionId, event) -> {
 351		if (actionId == EditorInfo.IME_ACTION_SEND) {
 352			InputMethodManager imm = (InputMethodManager) v.getContext()
 353					.getSystemService(Context.INPUT_METHOD_SERVICE);
 354			if (imm.isFullscreenMode()) {
 355				imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 356			}
 357			sendMessage();
 358			return true;
 359		} else {
 360			return false;
 361		}
 362	};
 363	private OnClickListener mSendButtonListener = new OnClickListener() {
 364
 365		@Override
 366		public void onClick(View v) {
 367			Object tag = v.getTag();
 368			if (tag instanceof SendButtonAction) {
 369				SendButtonAction action = (SendButtonAction) tag;
 370				switch (action) {
 371					case TAKE_PHOTO:
 372					case RECORD_VIDEO:
 373					case SEND_LOCATION:
 374					case RECORD_VOICE:
 375					case CHOOSE_PICTURE:
 376						attachFile(action.toChoice());
 377						break;
 378					case CANCEL:
 379						if (conversation != null) {
 380							if (conversation.setCorrectingMessage(null)) {
 381								binding.textinput.setText("");
 382								binding.textinput.append(conversation.getDraftMessage());
 383								conversation.setDraftMessage(null);
 384							} else if (conversation.getMode() == Conversation.MODE_MULTI) {
 385								conversation.setNextCounterpart(null);
 386							}
 387							updateChatMsgHint();
 388							updateSendButton();
 389							updateEditablity();
 390						}
 391						break;
 392					default:
 393						sendMessage();
 394				}
 395			} else {
 396				sendMessage();
 397			}
 398		}
 399	};
 400	private int completionIndex = 0;
 401	private int lastCompletionLength = 0;
 402	private String incomplete;
 403	private int lastCompletionCursor;
 404	private boolean firstWord = false;
 405	private Message mPendingDownloadableMessage;
 406
 407	private int getIndexOf(String uuid, List<Message> messages) {
 408		if (uuid == null) {
 409			return messages.size() - 1;
 410		}
 411		for (int i = 0; i < messages.size(); ++i) {
 412			if (uuid.equals(messages.get(i).getUuid())) {
 413				return i;
 414			} else {
 415				Message next = messages.get(i);
 416				while (next != null && next.wasMergedIntoPrevious()) {
 417					if (uuid.equals(next.getUuid())) {
 418						return i;
 419					}
 420					next = next.next();
 421				}
 422
 423			}
 424		}
 425		return -1;
 426	}
 427
 428	public Pair<Integer, Integer> getScrollPosition() {
 429		if (this.binding.messagesView.getCount() == 0 ||
 430				this.binding.messagesView.getLastVisiblePosition() == this.binding.messagesView.getCount() - 1) {
 431			return null;
 432		} else {
 433			final int pos = this.binding.messagesView.getFirstVisiblePosition();
 434			final View view = this.binding.messagesView.getChildAt(0);
 435			if (view == null) {
 436				return null;
 437			} else {
 438				return new Pair<>(pos, view.getTop());
 439			}
 440		}
 441	}
 442
 443	public void setScrollPosition(Pair<Integer, Integer> scrollPosition) {
 444		if (scrollPosition != null) {
 445			this.binding.messagesView.setSelectionFromTop(scrollPosition.first, scrollPosition.second);
 446		}
 447	}
 448
 449
 450	private void attachLocationToConversation(Conversation conversation, Uri uri) {
 451		if (conversation == null) {
 452			return;
 453		}
 454		activity.xmppConnectionService.attachLocationToConversation(conversation, uri, new UiCallback<Message>() {
 455
 456			@Override
 457			public void success(Message message) {
 458				activity.xmppConnectionService.sendMessage(message);
 459			}
 460
 461			@Override
 462			public void error(int errorCode, Message object) {
 463
 464			}
 465
 466			@Override
 467			public void userInputRequried(PendingIntent pi, Message object) {
 468
 469			}
 470		});
 471	}
 472
 473	private void attachFileToConversation(Conversation conversation, Uri uri) {
 474		if (conversation == null) {
 475			return;
 476		}
 477		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 478		prepareFileToast.show();
 479		activity.delegateUriPermissionsToService(uri);
 480		activity.xmppConnectionService.attachFileToConversation(conversation, uri, new UiInformableCallback<Message>() {
 481			@Override
 482			public void inform(final String text) {
 483				hidePrepareFileToast(prepareFileToast);
 484				getActivity().runOnUiThread(() -> activity.replaceToast(text));
 485			}
 486
 487			@Override
 488			public void success(Message message) {
 489				getActivity().runOnUiThread(() -> activity.hideToast());
 490				hidePrepareFileToast(prepareFileToast);
 491				activity.xmppConnectionService.sendMessage(message);
 492			}
 493
 494			@Override
 495			public void error(final int errorCode, Message message) {
 496				hidePrepareFileToast(prepareFileToast);
 497				getActivity().runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 498
 499			}
 500
 501			@Override
 502			public void userInputRequried(PendingIntent pi, Message message) {
 503				hidePrepareFileToast(prepareFileToast);
 504			}
 505		});
 506	}
 507
 508	public void attachImageToConversation(Uri uri) {
 509		this.attachImageToConversation(conversation, uri);
 510	}
 511
 512	private void attachImageToConversation(Conversation conversation, Uri uri) {
 513		if (conversation == null) {
 514			return;
 515		}
 516		final Toast prepareFileToast = Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 517		prepareFileToast.show();
 518		activity.delegateUriPermissionsToService(uri);
 519		activity.xmppConnectionService.attachImageToConversation(conversation, uri,
 520				new UiCallback<Message>() {
 521
 522					@Override
 523					public void userInputRequried(PendingIntent pi, Message object) {
 524						hidePrepareFileToast(prepareFileToast);
 525					}
 526
 527					@Override
 528					public void success(Message message) {
 529						hidePrepareFileToast(prepareFileToast);
 530						activity.xmppConnectionService.sendMessage(message);
 531					}
 532
 533					@Override
 534					public void error(final int error, Message message) {
 535						hidePrepareFileToast(prepareFileToast);
 536						activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 537					}
 538				});
 539	}
 540
 541	private void hidePrepareFileToast(final Toast prepareFileToast) {
 542		if (prepareFileToast != null) {
 543			activity.runOnUiThread(prepareFileToast::cancel);
 544		}
 545	}
 546
 547	private void sendMessage() {
 548		final String body = this.binding.textinput.getText().toString();
 549		final Conversation conversation = this.conversation;
 550		if (body.length() == 0 || conversation == null) {
 551			return;
 552		}
 553		final Message message;
 554		if (conversation.getCorrectingMessage() == null) {
 555			message = new Message(conversation, body, conversation.getNextEncryption());
 556			if (conversation.getMode() == Conversation.MODE_MULTI) {
 557				final Jid nextCounterpart = conversation.getNextCounterpart();
 558				if (nextCounterpart != null) {
 559					message.setCounterpart(nextCounterpart);
 560					message.setTrueCounterpart(conversation.getMucOptions().getTrueCounterpart(nextCounterpart));
 561					message.setType(Message.TYPE_PRIVATE);
 562				}
 563			}
 564		} else {
 565			message = conversation.getCorrectingMessage();
 566			message.setBody(body);
 567			message.setEdited(message.getUuid());
 568			message.setUuid(UUID.randomUUID().toString());
 569		}
 570		switch (message.getConversation().getNextEncryption()) {
 571			case Message.ENCRYPTION_PGP:
 572				sendPgpMessage(message);
 573				break;
 574			case Message.ENCRYPTION_AXOLOTL:
 575				if (!trustKeysIfNeeded(REQUEST_TRUST_KEYS_TEXT)) {
 576					sendAxolotlMessage(message);
 577				}
 578				break;
 579			default:
 580				sendPlainTextMessage(message);
 581		}
 582	}
 583
 584	protected boolean trustKeysIfNeeded(int requestCode) {
 585		return trustKeysIfNeeded(requestCode, ATTACHMENT_CHOICE_INVALID);
 586	}
 587
 588	protected boolean trustKeysIfNeeded(int requestCode, int attachmentChoice) {
 589		AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 590		final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 591		boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 592		boolean hasUndecidedOwn = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided()).isEmpty();
 593		boolean hasUndecidedContacts = !axolotlService.getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets).isEmpty();
 594		boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 595		boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 596		if (hasUndecidedOwn || hasUndecidedContacts || hasPendingKeys || hasNoTrustedKeys || hasUnaccepted) {
 597			axolotlService.createSessionsIfNeeded(conversation);
 598			Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 599			String[] contacts = new String[targets.size()];
 600			for (int i = 0; i < contacts.length; ++i) {
 601				contacts[i] = targets.get(i).toString();
 602			}
 603			intent.putExtra("contacts", contacts);
 604			intent.putExtra(EXTRA_ACCOUNT, conversation.getAccount().getJid().toBareJid().toString());
 605			intent.putExtra("choice", attachmentChoice);
 606			intent.putExtra("conversation", conversation.getUuid());
 607			startActivityForResult(intent, requestCode);
 608			return true;
 609		} else {
 610			return false;
 611		}
 612	}
 613
 614	public void updateChatMsgHint() {
 615		final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 616		if (conversation.getCorrectingMessage() != null) {
 617			this.binding.textinput.setHint(R.string.send_corrected_message);
 618		} else if (multi && conversation.getNextCounterpart() != null) {
 619			this.binding.textinput.setHint(getString(
 620					R.string.send_private_message_to,
 621					conversation.getNextCounterpart().getResourcepart()));
 622		} else if (multi && !conversation.getMucOptions().participating()) {
 623			this.binding.textinput.setHint(R.string.you_are_not_participating);
 624		} else {
 625			this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 626			getActivity().invalidateOptionsMenu();
 627		}
 628	}
 629
 630	public void setupIme() {
 631		this.binding.textinput.refreshIme();
 632	}
 633
 634	private void handleActivityResult(ActivityResult activityResult) {
 635		if (activityResult.resultCode == Activity.RESULT_OK) {
 636			handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 637		} else {
 638			handleNegativeActivityResult(activityResult.requestCode);
 639		}
 640	}
 641
 642	private void handlePositiveActivityResult(int requestCode, final Intent data) {
 643		switch (requestCode) {
 644			case REQUEST_TRUST_KEYS_TEXT:
 645				final String body = this.binding.textinput.getText().toString();
 646				Message message = new Message(conversation, body, conversation.getNextEncryption());
 647				sendAxolotlMessage(message);
 648				break;
 649			case REQUEST_TRUST_KEYS_MENU:
 650				int choice = data.getIntExtra("choice", ATTACHMENT_CHOICE_INVALID);
 651				selectPresenceToAttachFile(choice);
 652				break;
 653			case REQUEST_CHOOSE_PGP_ID:
 654				long id = data.getLongExtra(OpenPgpApi.EXTRA_SIGN_KEY_ID, 0);
 655				if (id != 0) {
 656					conversation.getAccount().setPgpSignId(id);
 657					activity.announcePgp(conversation.getAccount(), null, null, activity.onOpenPGPKeyPublished);
 658				} else {
 659					activity.choosePgpSignId(conversation.getAccount());
 660				}
 661				break;
 662			case REQUEST_ANNOUNCE_PGP:
 663				activity.announcePgp(conversation.getAccount(), conversation, data, activity.onOpenPGPKeyPublished);
 664				break;
 665			case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 666				List<Uri> imageUris = AttachmentTool.extractUriFromIntent(data);
 667				for (Iterator<Uri> i = imageUris.iterator(); i.hasNext(); i.remove()) {
 668					Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching image to conversations. CHOOSE_IMAGE");
 669					attachImageToConversation(conversation, i.next());
 670				}
 671				break;
 672			case ATTACHMENT_CHOICE_CHOOSE_FILE:
 673			case ATTACHMENT_CHOICE_RECORD_VIDEO:
 674			case ATTACHMENT_CHOICE_RECORD_VOICE:
 675				final List<Uri> fileUris = AttachmentTool.extractUriFromIntent(data);
 676				final PresenceSelector.OnPresenceSelected callback = () -> {
 677					for (Iterator<Uri> i = fileUris.iterator(); i.hasNext(); i.remove()) {
 678						Log.d(Config.LOGTAG, "ConversationsActivity.onActivityResult() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
 679						attachFileToConversation(conversation, i.next());
 680					}
 681				};
 682				if (conversation == null || conversation.getMode() == Conversation.MODE_MULTI || FileBackend.allFilesUnderSize(getActivity(), fileUris, getMaxHttpUploadSize(conversation))) {
 683					callback.onPresenceSelected();
 684				} else {
 685					activity.selectPresence(conversation, callback);
 686				}
 687				break;
 688			case ATTACHMENT_CHOICE_LOCATION:
 689				double latitude = data.getDoubleExtra("latitude", 0);
 690				double longitude = data.getDoubleExtra("longitude", 0);
 691				Uri geo = Uri.parse("geo:" + String.valueOf(latitude) + "," + String.valueOf(longitude));
 692				attachLocationToConversation(conversation, geo);
 693				break;
 694		}
 695	}
 696
 697	private void handleNegativeActivityResult(int requestCode) {
 698		switch (requestCode) {
 699			//nothing to do for now
 700		}
 701	}
 702
 703	@Override
 704	public void onActivityResult(int requestCode, int resultCode, final Intent data) {
 705		super.onActivityResult(requestCode, resultCode, data);
 706		ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
 707		if (activity != null && activity.xmppConnectionService != null) {
 708			handleActivityResult(activityResult);
 709		} else {
 710			this.postponedActivityResult.push(activityResult);
 711		}
 712	}
 713
 714	public void unblockConversation(final Blockable conversation) {
 715		activity.xmppConnectionService.sendUnblockRequest(conversation);
 716	}
 717
 718	@Override
 719	public void onAttach(Activity activity) {
 720		super.onAttach(activity);
 721		Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
 722		if (activity instanceof ConversationActivity) {
 723			this.activity = (ConversationActivity) activity;
 724		} else {
 725			throw new IllegalStateException("Trying to attach fragment to activity that is not the ConversationActivity");
 726		}
 727	}
 728
 729	@Override
 730	public void onDetach() {
 731		super.onDetach();
 732		this.activity = null;
 733	}
 734
 735	@Override
 736	public void onCreate(Bundle savedInstanceState) {
 737		super.onCreate(savedInstanceState);
 738		setHasOptionsMenu(true);
 739	}
 740
 741
 742	@Override
 743	public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
 744		menuInflater.inflate(R.menu.fragment_conversation, menu);
 745		final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
 746		final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
 747		final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
 748		final MenuItem menuMute = menu.findItem(R.id.action_mute);
 749		final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
 750
 751
 752		if (conversation != null) {
 753			if (conversation.getMode() == Conversation.MODE_MULTI) {
 754				menuContactDetails.setVisible(false);
 755				menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
 756			} else {
 757				menuContactDetails.setVisible(!this.conversation.withSelf());
 758				menuMucDetails.setVisible(false);
 759				final XmppConnectionService service = activity.xmppConnectionService;
 760				menuInviteContact.setVisible(service != null && service.findConferenceServer(conversation.getAccount()) != null);
 761			}
 762			if (conversation.isMuted()) {
 763				menuMute.setVisible(false);
 764			} else {
 765				menuUnmute.setVisible(false);
 766			}
 767			ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
 768			ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
 769		}
 770		super.onCreateOptionsMenu(menu, menuInflater);
 771	}
 772
 773	@Override
 774	public View onCreateView(final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
 775		this.binding = DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
 776		binding.getRoot().setOnClickListener(null); //TODO why the fuck did we do this?
 777
 778		binding.textinput.addTextChangedListener(new StylingHelper.MessageEditorStyler(binding.textinput));
 779
 780		binding.textinput.setOnEditorActionListener(mEditorActionListener);
 781		binding.textinput.setRichContentListener(new String[]{"image/*"}, mEditorContentListener);
 782
 783		binding.textSendButton.setOnClickListener(this.mSendButtonListener);
 784
 785		binding.messagesView.setOnScrollListener(mOnScrollListener);
 786		binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
 787		messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
 788		messageListAdapter.setOnContactPictureClicked(message -> {
 789			final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
 790			if (received) {
 791				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 792					Jid user = message.getCounterpart();
 793					if (user != null && !user.isBareJid()) {
 794						if (!message.getConversation().getMucOptions().isUserInRoom(user)) {
 795							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 796						}
 797						highlightInConference(user.getResourcepart());
 798					}
 799					return;
 800				} else {
 801					if (!message.getContact().isSelf()) {
 802						String fingerprint;
 803						if (message.getEncryption() == Message.ENCRYPTION_PGP
 804								|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 805							fingerprint = "pgp";
 806						} else {
 807							fingerprint = message.getFingerprint();
 808						}
 809						activity.switchToContactDetails(message.getContact(), fingerprint);
 810						return;
 811					}
 812				}
 813			}
 814			Account account = message.getConversation().getAccount();
 815			Intent intent;
 816			if (activity.manuallyChangePresence() && !received) {
 817				intent = new Intent(activity, SetPresenceActivity.class);
 818				intent.putExtra(EXTRA_ACCOUNT, account.getJid().toBareJid().toString());
 819			} else {
 820				intent = new Intent(activity, EditAccountActivity.class);
 821				intent.putExtra("jid", account.getJid().toBareJid().toString());
 822				String fingerprint;
 823				if (message.getEncryption() == Message.ENCRYPTION_PGP
 824						|| message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
 825					fingerprint = "pgp";
 826				} else {
 827					fingerprint = message.getFingerprint();
 828				}
 829				intent.putExtra("fingerprint", fingerprint);
 830			}
 831			startActivity(intent);
 832		});
 833		messageListAdapter.setOnContactPictureLongClicked(message -> {
 834			if (message.getStatus() <= Message.STATUS_RECEIVED) {
 835				if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
 836					final MucOptions mucOptions = conversation.getMucOptions();
 837					if (!mucOptions.allowPm()) {
 838						Toast.makeText(getActivity(), R.string.private_messages_are_disabled, Toast.LENGTH_SHORT).show();
 839						return;
 840					}
 841					Jid user = message.getCounterpart();
 842					if (user != null && !user.isBareJid()) {
 843						if (mucOptions.isUserInRoom(user)) {
 844							privateMessageWith(user);
 845						} else {
 846							Toast.makeText(getActivity(), activity.getString(R.string.user_has_left_conference, user.getResourcepart()), Toast.LENGTH_SHORT).show();
 847						}
 848					}
 849				}
 850			} else {
 851				activity.showQrCode(conversation.getAccount().getShareableUri());
 852			}
 853		});
 854		messageListAdapter.setOnQuoteListener(this::quoteText);
 855		binding.messagesView.setAdapter(messageListAdapter);
 856
 857		registerForContextMenu(binding.messagesView);
 858
 859		return binding.getRoot();
 860	}
 861
 862	private void quoteText(String text) {
 863		if (binding.textinput.isEnabled()) {
 864			text = text.replaceAll("(\n *){2,}", "\n").replaceAll("(^|\n)", "$1> ").replaceAll("\n$", "");
 865			Editable editable = binding.textinput.getEditableText();
 866			int position = binding.textinput.getSelectionEnd();
 867			if (position == -1) position = editable.length();
 868			if (position > 0 && editable.charAt(position - 1) != '\n') {
 869				editable.insert(position++, "\n");
 870			}
 871			editable.insert(position, text);
 872			position += text.length();
 873			editable.insert(position++, "\n");
 874			if (position < editable.length() && editable.charAt(position) != '\n') {
 875				editable.insert(position, "\n");
 876			}
 877			binding.textinput.setSelection(position);
 878			binding.textinput.requestFocus();
 879			InputMethodManager inputMethodManager = (InputMethodManager) getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
 880			if (inputMethodManager != null) {
 881				inputMethodManager.showSoftInput(binding.textinput, InputMethodManager.SHOW_IMPLICIT);
 882			}
 883		}
 884	}
 885
 886	private void quoteMessage(Message message) {
 887		quoteText(MessageUtils.prepareQuote(message));
 888	}
 889
 890	@Override
 891	public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
 892		synchronized (this.messageList) {
 893			super.onCreateContextMenu(menu, v, menuInfo);
 894			AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
 895			this.selectedMessage = this.messageList.get(acmi.position);
 896			populateContextMenu(menu);
 897		}
 898	}
 899
 900	private void populateContextMenu(ContextMenu menu) {
 901		final Message m = this.selectedMessage;
 902		final Transferable t = m.getTransferable();
 903		Message relevantForCorrection = m;
 904		while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
 905			relevantForCorrection = relevantForCorrection.next();
 906		}
 907		if (m.getType() != Message.TYPE_STATUS) {
 908			final boolean treatAsFile = m.getType() != Message.TYPE_TEXT
 909					&& m.getType() != Message.TYPE_PRIVATE
 910					&& t == null;
 911			final boolean encrypted = m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
 912					|| m.getEncryption() == Message.ENCRYPTION_PGP;
 913			activity.getMenuInflater().inflate(R.menu.message_context, menu);
 914			menu.setHeaderTitle(R.string.message_options);
 915			MenuItem copyMessage = menu.findItem(R.id.copy_message);
 916			MenuItem quoteMessage = menu.findItem(R.id.quote_message);
 917			MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
 918			MenuItem correctMessage = menu.findItem(R.id.correct_message);
 919			MenuItem shareWith = menu.findItem(R.id.share_with);
 920			MenuItem sendAgain = menu.findItem(R.id.send_again);
 921			MenuItem copyUrl = menu.findItem(R.id.copy_url);
 922			MenuItem downloadFile = menu.findItem(R.id.download_file);
 923			MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
 924			MenuItem deleteFile = menu.findItem(R.id.delete_file);
 925			MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
 926			if (!treatAsFile && !encrypted && !m.isGeoUri() && !m.treatAsDownloadable()) {
 927				copyMessage.setVisible(true);
 928				quoteMessage.setVisible(MessageUtils.prepareQuote(m).length() > 0);
 929			}
 930			if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED) {
 931				retryDecryption.setVisible(true);
 932			}
 933			if (relevantForCorrection.getType() == Message.TYPE_TEXT
 934					&& relevantForCorrection.isLastCorrectableMessage()
 935					&& (m.getConversation().getMucOptions().nonanonymous() || m.getConversation().getMode() == Conversation.MODE_SINGLE)) {
 936				correctMessage.setVisible(true);
 937			}
 938			if (treatAsFile || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())) {
 939				shareWith.setVisible(true);
 940			}
 941			if (m.getStatus() == Message.STATUS_SEND_FAILED) {
 942				sendAgain.setVisible(true);
 943			}
 944			if (m.hasFileOnRemoteHost()
 945					|| m.isGeoUri()
 946					|| m.treatAsDownloadable()
 947					|| (t != null && t instanceof HttpDownloadConnection)) {
 948				copyUrl.setVisible(true);
 949			}
 950			if ((m.isFileOrImage() && t instanceof TransferablePlaceholder && m.hasFileOnRemoteHost())) {
 951				downloadFile.setVisible(true);
 952				downloadFile.setTitle(activity.getString(R.string.download_x_file, UIHelper.getFileDescriptionString(activity, m)));
 953			}
 954			boolean waitingOfferedSending = m.getStatus() == Message.STATUS_WAITING
 955					|| m.getStatus() == Message.STATUS_UNSEND
 956					|| m.getStatus() == Message.STATUS_OFFERED;
 957			if ((t != null && !(t instanceof TransferablePlaceholder)) || waitingOfferedSending && m.needsUploading()) {
 958				cancelTransmission.setVisible(true);
 959			}
 960			if (treatAsFile) {
 961				String path = m.getRelativeFilePath();
 962				if (path == null || !path.startsWith("/")) {
 963					deleteFile.setVisible(true);
 964					deleteFile.setTitle(activity.getString(R.string.delete_x_file, UIHelper.getFileDescriptionString(activity, m)));
 965				}
 966			}
 967			if (m.getStatus() == Message.STATUS_SEND_FAILED && m.getErrorMessage() != null) {
 968				showErrorMessage.setVisible(true);
 969			}
 970		}
 971	}
 972
 973	@Override
 974	public boolean onContextItemSelected(MenuItem item) {
 975		switch (item.getItemId()) {
 976			case R.id.share_with:
 977				shareWith(selectedMessage);
 978				return true;
 979			case R.id.correct_message:
 980				correctMessage(selectedMessage);
 981				return true;
 982			case R.id.copy_message:
 983				copyMessage(selectedMessage);
 984				return true;
 985			case R.id.quote_message:
 986				quoteMessage(selectedMessage);
 987				return true;
 988			case R.id.send_again:
 989				resendMessage(selectedMessage);
 990				return true;
 991			case R.id.copy_url:
 992				copyUrl(selectedMessage);
 993				return true;
 994			case R.id.download_file:
 995				startDownloadable(selectedMessage);
 996				return true;
 997			case R.id.cancel_transmission:
 998				cancelTransmission(selectedMessage);
 999				return true;
1000			case R.id.retry_decryption:
1001				retryDecryption(selectedMessage);
1002				return true;
1003			case R.id.delete_file:
1004				deleteFile(selectedMessage);
1005				return true;
1006			case R.id.show_error_message:
1007				showErrorMessage(selectedMessage);
1008				return true;
1009			default:
1010				return super.onContextItemSelected(item);
1011		}
1012	}
1013
1014	@Override
1015	public boolean onOptionsItemSelected(final MenuItem item) {
1016		if (conversation == null) {
1017			return super.onOptionsItemSelected(item);
1018		}
1019		switch (item.getItemId()) {
1020			case R.id.encryption_choice_axolotl:
1021			case R.id.encryption_choice_pgp:
1022			case R.id.encryption_choice_none:
1023				handleEncryptionSelection(item);
1024				break;
1025			case R.id.attach_choose_picture:
1026			case R.id.attach_take_picture:
1027			case R.id.attach_record_video:
1028			case R.id.attach_choose_file:
1029			case R.id.attach_record_voice:
1030			case R.id.attach_location:
1031				handleAttachmentSelection(item);
1032				break;
1033			case R.id.action_archive:
1034				activity.xmppConnectionService.archiveConversation(conversation);
1035				activity.onConversationArchived(conversation);
1036				break;
1037			case R.id.action_contact_details:
1038				activity.switchToContactDetails(conversation.getContact());
1039				break;
1040			case R.id.action_muc_details:
1041				Intent intent = new Intent(getActivity(), ConferenceDetailsActivity.class);
1042				intent.setAction(ConferenceDetailsActivity.ACTION_VIEW_MUC);
1043				intent.putExtra("uuid", conversation.getUuid());
1044				startActivity(intent);
1045				break;
1046			case R.id.action_invite:
1047				activity.inviteToConversation(conversation);
1048				break;
1049			case R.id.action_clear_history:
1050				clearHistoryDialog(conversation);
1051				break;
1052			case R.id.action_mute:
1053				muteConversationDialog(conversation);
1054				break;
1055			case R.id.action_unmute:
1056				unmuteConversation(conversation);
1057				break;
1058			case R.id.action_block:
1059			case R.id.action_unblock:
1060				final Activity activity = getActivity();
1061				if (activity instanceof XmppActivity) {
1062					BlockContactDialog.show((XmppActivity) activity, conversation);
1063				}
1064				break;
1065			default:
1066				break;
1067		}
1068		return super.onOptionsItemSelected(item);
1069	}
1070
1071	private void handleAttachmentSelection(MenuItem item) {
1072		switch (item.getItemId()) {
1073			case R.id.attach_choose_picture:
1074				attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1075				break;
1076			case R.id.attach_take_picture:
1077				attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1078				break;
1079			case R.id.attach_record_video:
1080				attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1081				break;
1082			case R.id.attach_choose_file:
1083				attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1084				break;
1085			case R.id.attach_record_voice:
1086				attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1087				break;
1088			case R.id.attach_location:
1089				attachFile(ATTACHMENT_CHOICE_LOCATION);
1090				break;
1091		}
1092	}
1093
1094	private void handleEncryptionSelection(MenuItem item) {
1095		if (conversation == null) {
1096			return;
1097		}
1098		switch (item.getItemId()) {
1099			case R.id.encryption_choice_none:
1100				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1101				item.setChecked(true);
1102				break;
1103			case R.id.encryption_choice_pgp:
1104				if (activity.hasPgp()) {
1105					if (conversation.getAccount().getPgpSignature() != null) {
1106						conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1107						item.setChecked(true);
1108					} else {
1109						activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
1110					}
1111				} else {
1112					activity.showInstallPgpDialog();
1113				}
1114				break;
1115			case R.id.encryption_choice_axolotl:
1116				Log.d(Config.LOGTAG, AxolotlService.getLogprefix(conversation.getAccount())
1117						+ "Enabled axolotl for Contact " + conversation.getContact().getJid());
1118				conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1119				item.setChecked(true);
1120				break;
1121			default:
1122				conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1123				break;
1124		}
1125		activity.xmppConnectionService.updateConversation(conversation);
1126		updateChatMsgHint();
1127		getActivity().invalidateOptionsMenu();
1128		activity.refreshUi();
1129	}
1130
1131	public void attachFile(final int attachmentChoice) {
1132		if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1133			if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(attachmentChoice)) {
1134				return;
1135			}
1136		}
1137		try {
1138			activity.getPreferences().edit()
1139					.putString(RECENTLY_USED_QUICK_ACTION, SendButtonAction.of(attachmentChoice).toString())
1140					.apply();
1141		} catch (IllegalArgumentException e) {
1142			//just do not save
1143		}
1144		final int encryption = conversation.getNextEncryption();
1145		final int mode = conversation.getMode();
1146		if (encryption == Message.ENCRYPTION_PGP) {
1147			if (activity.hasPgp()) {
1148				if (mode == Conversation.MODE_SINGLE && conversation.getContact().getPgpKeyId() != 0) {
1149					activity.xmppConnectionService.getPgpEngine().hasKey(
1150							conversation.getContact(),
1151							new UiCallback<Contact>() {
1152
1153								@Override
1154								public void userInputRequried(PendingIntent pi, Contact contact) {
1155									startPendingIntent(pi, attachmentChoice);
1156								}
1157
1158								@Override
1159								public void success(Contact contact) {
1160									selectPresenceToAttachFile(attachmentChoice);
1161								}
1162
1163								@Override
1164								public void error(int error, Contact contact) {
1165									activity.replaceToast(getString(error));
1166								}
1167							});
1168				} else if (mode == Conversation.MODE_MULTI && conversation.getMucOptions().pgpKeysInUse()) {
1169					if (!conversation.getMucOptions().everybodyHasKeys()) {
1170						Toast warning = Toast.makeText(getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
1171						warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1172						warning.show();
1173					}
1174					selectPresenceToAttachFile(attachmentChoice);
1175				} else {
1176					final ConversationFragment fragment = (ConversationFragment) getFragmentManager()
1177							.findFragmentByTag("conversation");
1178					if (fragment != null) {
1179						fragment.showNoPGPKeyDialog(false, (dialog, which) -> {
1180							conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1181							activity.xmppConnectionService.updateConversation(conversation);
1182							selectPresenceToAttachFile(attachmentChoice);
1183						});
1184					}
1185				}
1186			} else {
1187				activity.showInstallPgpDialog();
1188			}
1189		} else {
1190			if (encryption != Message.ENCRYPTION_AXOLOTL || !trustKeysIfNeeded(REQUEST_TRUST_KEYS_MENU, attachmentChoice)) {
1191				selectPresenceToAttachFile(attachmentChoice);
1192			}
1193		}
1194	}
1195
1196	@Override
1197	public void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {
1198		if (grantResults.length > 0)
1199			if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
1200				if (requestCode == REQUEST_START_DOWNLOAD) {
1201					if (this.mPendingDownloadableMessage != null) {
1202						startDownloadable(this.mPendingDownloadableMessage);
1203					}
1204				} else if (requestCode == REQUEST_ADD_EDITOR_CONTENT) {
1205					if (this.mPendingEditorContent != null) {
1206						attachImageToConversation(this.mPendingEditorContent);
1207					}
1208				} else {
1209					attachFile(requestCode);
1210				}
1211			} else {
1212				Toast.makeText(getActivity(), R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
1213			}
1214	}
1215
1216	public void startDownloadable(Message message) {
1217		if (!Config.ONLY_INTERNAL_STORAGE && !hasStoragePermission(REQUEST_START_DOWNLOAD)) {
1218			this.mPendingDownloadableMessage = message;
1219			return;
1220		}
1221		Transferable transferable = message.getTransferable();
1222		if (transferable != null) {
1223			if (!transferable.start()) {
1224				Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT).show();
1225			}
1226		} else if (message.treatAsDownloadable()) {
1227			activity.xmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message, true);
1228		}
1229	}
1230
1231	@SuppressLint("InflateParams")
1232	protected void clearHistoryDialog(final Conversation conversation) {
1233		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1234		builder.setTitle(getString(R.string.clear_conversation_history));
1235		final View dialogView = getActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1236		final CheckBox endConversationCheckBox = dialogView.findViewById(R.id.end_conversation_checkbox);
1237		builder.setView(dialogView);
1238		builder.setNegativeButton(getString(R.string.cancel), null);
1239		builder.setPositiveButton(getString(R.string.delete_messages), (dialog, which) -> {
1240			this.activity.xmppConnectionService.clearConversationHistory(conversation);
1241			if (endConversationCheckBox.isChecked()) {
1242				this.activity.xmppConnectionService.archiveConversation(conversation);
1243				this.activity.onConversationArchived(conversation);
1244			} else {
1245				activity.onConversationsListItemUpdated();
1246				refresh();
1247			}
1248		});
1249		builder.create().show();
1250	}
1251
1252	protected void muteConversationDialog(final Conversation conversation) {
1253		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1254		builder.setTitle(R.string.disable_notifications);
1255		final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1256		builder.setItems(R.array.mute_options_descriptions, (dialog, which) -> {
1257			final long till;
1258			if (durations[which] == -1) {
1259				till = Long.MAX_VALUE;
1260			} else {
1261				till = System.currentTimeMillis() + (durations[which] * 1000);
1262			}
1263			conversation.setMutedTill(till);
1264			activity.xmppConnectionService.updateConversation(conversation);
1265			activity.onConversationsListItemUpdated();
1266			refresh();
1267			getActivity().invalidateOptionsMenu();
1268		});
1269		builder.create().show();
1270	}
1271
1272	private boolean hasStoragePermission(int requestCode) {
1273		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1274			if (activity.checkSelfPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
1275				requestPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, requestCode);
1276				return false;
1277			} else {
1278				return true;
1279			}
1280		} else {
1281			return true;
1282		}
1283	}
1284
1285	public void unmuteConversation(final Conversation conversation) {
1286		conversation.setMutedTill(0);
1287		this.activity.xmppConnectionService.updateConversation(conversation);
1288		this.activity.onConversationsListItemUpdated();
1289		refresh();
1290		getActivity().invalidateOptionsMenu();
1291	}
1292
1293	protected void selectPresenceToAttachFile(final int attachmentChoice) {
1294		final Account account = conversation.getAccount();
1295		final PresenceSelector.OnPresenceSelected callback = () -> {
1296			Intent intent = new Intent();
1297			boolean chooser = false;
1298			String fallbackPackageId = null;
1299			switch (attachmentChoice) {
1300				case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1301					intent.setAction(Intent.ACTION_GET_CONTENT);
1302					if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) {
1303						intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
1304					}
1305					intent.setType("image/*");
1306					chooser = true;
1307					break;
1308				case ATTACHMENT_CHOICE_RECORD_VIDEO:
1309					intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
1310					break;
1311				case ATTACHMENT_CHOICE_TAKE_PHOTO:
1312					Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
1313					//TODO save photo uri
1314					//mPendingImageUris.clear();
1315					//mPendingImageUris.add(uri);
1316					intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
1317					intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
1318					intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1319					intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
1320					break;
1321				case ATTACHMENT_CHOICE_CHOOSE_FILE:
1322					chooser = true;
1323					intent.setType("*/*");
1324					intent.addCategory(Intent.CATEGORY_OPENABLE);
1325					intent.setAction(Intent.ACTION_GET_CONTENT);
1326					break;
1327				case ATTACHMENT_CHOICE_RECORD_VOICE:
1328					intent.setAction(MediaStore.Audio.Media.RECORD_SOUND_ACTION);
1329					fallbackPackageId = "eu.siacs.conversations.voicerecorder";
1330					break;
1331				case ATTACHMENT_CHOICE_LOCATION:
1332					intent.setAction("eu.siacs.conversations.location.request");
1333					fallbackPackageId = "eu.siacs.conversations.sharelocation";
1334					break;
1335			}
1336			if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1337				if (chooser) {
1338					startActivityForResult(
1339							Intent.createChooser(intent, getString(R.string.perform_action_with)),
1340							attachmentChoice);
1341				} else {
1342					startActivityForResult(intent, attachmentChoice);
1343				}
1344			} else if (fallbackPackageId != null) {
1345				startActivity(getInstallApkIntent(fallbackPackageId));
1346			}
1347		};
1348		if (account.httpUploadAvailable() || attachmentChoice == ATTACHMENT_CHOICE_LOCATION) {
1349			conversation.setNextCounterpart(null);
1350			callback.onPresenceSelected();
1351		} else {
1352			activity.selectPresence(conversation, callback);
1353		}
1354	}
1355
1356	private Intent getInstallApkIntent(final String packageId) {
1357		Intent intent = new Intent(Intent.ACTION_VIEW);
1358		intent.setData(Uri.parse("market://details?id=" + packageId));
1359		if (intent.resolveActivity(getActivity().getPackageManager()) != null) {
1360			return intent;
1361		} else {
1362			intent.setData(Uri.parse("http://play.google.com/store/apps/details?id=" + packageId));
1363			return intent;
1364		}
1365	}
1366
1367	@Override
1368	public void onResume() {
1369		new Handler().post(() -> {
1370			final Activity activity = getActivity();
1371			if (activity == null) {
1372				return;
1373			}
1374			final PackageManager packageManager = activity.getPackageManager();
1375			ConversationMenuConfigurator.updateAttachmentAvailability(packageManager);
1376			getActivity().invalidateOptionsMenu();
1377		});
1378		super.onResume();
1379	}
1380
1381	private void showErrorMessage(final Message message) {
1382		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
1383		builder.setTitle(R.string.error_message);
1384		builder.setMessage(message.getErrorMessage());
1385		builder.setPositiveButton(R.string.confirm, null);
1386		builder.create().show();
1387	}
1388
1389	private void shareWith(Message message) {
1390		Intent shareIntent = new Intent();
1391		shareIntent.setAction(Intent.ACTION_SEND);
1392		if (message.isGeoUri()) {
1393			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getBody());
1394			shareIntent.setType("text/plain");
1395		} else if (!message.isFileOrImage()) {
1396			shareIntent.putExtra(Intent.EXTRA_TEXT, message.getMergedBody().toString());
1397			shareIntent.setType("text/plain");
1398		} else {
1399			final DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1400			try {
1401				shareIntent.putExtra(Intent.EXTRA_STREAM, FileBackend.getUriForFile(getActivity(), file));
1402			} catch (SecurityException e) {
1403				Toast.makeText(getActivity(), activity.getString(R.string.no_permission_to_access_x, file.getAbsolutePath()), Toast.LENGTH_SHORT).show();
1404				return;
1405			}
1406			shareIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
1407			String mime = message.getMimeType();
1408			if (mime == null) {
1409				mime = "*/*";
1410			}
1411			shareIntent.setType(mime);
1412		}
1413		try {
1414			startActivity(Intent.createChooser(shareIntent, getText(R.string.share_with)));
1415		} catch (ActivityNotFoundException e) {
1416			//This should happen only on faulty androids because normally chooser is always available
1417			Toast.makeText(getActivity(), R.string.no_application_found_to_open_file, Toast.LENGTH_SHORT).show();
1418		}
1419	}
1420
1421	private void copyMessage(Message message) {
1422		if (activity.copyTextToClipboard(message.getMergedBody().toString(), R.string.message)) {
1423			Toast.makeText(getActivity(), R.string.message_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1424		}
1425	}
1426
1427	private void deleteFile(Message message) {
1428		if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
1429			message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1430			activity.onConversationsListItemUpdated();
1431			refresh();
1432		}
1433	}
1434
1435	private void resendMessage(final Message message) {
1436		if (message.isFileOrImage()) {
1437			DownloadableFile file = activity.xmppConnectionService.getFileBackend().getFile(message);
1438			if (file.exists()) {
1439				final Conversation conversation = message.getConversation();
1440				final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
1441				if (!message.hasFileOnRemoteHost()
1442						&& xmppConnection != null
1443						&& !xmppConnection.getFeatures().httpUpload(message.getFileParams().size)) {
1444					activity.selectPresence(conversation, () -> {
1445						message.setCounterpart(conversation.getNextCounterpart());
1446						activity.xmppConnectionService.resendFailedMessages(message);
1447					});
1448					return;
1449				}
1450			} else {
1451				Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
1452				message.setTransferable(new TransferablePlaceholder(Transferable.STATUS_DELETED));
1453				activity.onConversationsListItemUpdated();
1454				refresh();
1455				return;
1456			}
1457		}
1458		activity.xmppConnectionService.resendFailedMessages(message);
1459	}
1460
1461	private void copyUrl(Message message) {
1462		final String url;
1463		final int resId;
1464		if (message.isGeoUri()) {
1465			resId = R.string.location;
1466			url = message.getBody();
1467		} else if (message.hasFileOnRemoteHost()) {
1468			resId = R.string.file_url;
1469			url = message.getFileParams().url.toString();
1470		} else {
1471			url = message.getBody().trim();
1472			resId = R.string.file_url;
1473		}
1474		if (activity.copyTextToClipboard(url, resId)) {
1475			Toast.makeText(getActivity(), R.string.url_copied_to_clipboard, Toast.LENGTH_SHORT).show();
1476		}
1477	}
1478
1479	public static void downloadFile(Activity activity, Message message) {
1480		Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
1481		if (fragment != null && fragment instanceof ConversationFragment) {
1482			((ConversationFragment) fragment).startDownloadable(message);
1483			return;
1484		}
1485		fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
1486		if (fragment != null && fragment instanceof ConversationFragment) {
1487			((ConversationFragment) fragment).startDownloadable(message);
1488		}
1489	}
1490
1491	private void cancelTransmission(Message message) {
1492		Transferable transferable = message.getTransferable();
1493		if (transferable != null) {
1494			transferable.cancel();
1495		} else if (message.getStatus() != Message.STATUS_RECEIVED) {
1496			activity.xmppConnectionService.markMessage(message, Message.STATUS_SEND_FAILED);
1497		}
1498	}
1499
1500	private void retryDecryption(Message message) {
1501		message.setEncryption(Message.ENCRYPTION_PGP);
1502		activity.onConversationsListItemUpdated();
1503		refresh();
1504		conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
1505	}
1506
1507	private void privateMessageWith(final Jid counterpart) {
1508		if (conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
1509			activity.xmppConnectionService.sendChatState(conversation);
1510		}
1511		this.binding.textinput.setText("");
1512		this.conversation.setNextCounterpart(counterpart);
1513		updateChatMsgHint();
1514		updateSendButton();
1515		updateEditablity();
1516	}
1517
1518	private void correctMessage(Message message) {
1519		while (message.mergeable(message.next())) {
1520			message = message.next();
1521		}
1522		this.conversation.setCorrectingMessage(message);
1523		final Editable editable = binding.textinput.getText();
1524		this.conversation.setDraftMessage(editable.toString());
1525		this.binding.textinput.setText("");
1526		this.binding.textinput.append(message.getBody());
1527
1528	}
1529
1530	private void highlightInConference(String nick) {
1531		final Editable editable = this.binding.textinput.getText();
1532		String oldString = editable.toString().trim();
1533		final int pos = this.binding.textinput.getSelectionStart();
1534		if (oldString.isEmpty() || pos == 0) {
1535			editable.insert(0, nick + ": ");
1536		} else {
1537			final char before = editable.charAt(pos - 1);
1538			final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
1539			if (before == '\n') {
1540				editable.insert(pos, nick + ": ");
1541			} else {
1542				if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
1543					if (NickValidityChecker.check(conversation, Arrays.asList(editable.subSequence(0, pos - 2).toString().split(", ")))) {
1544						editable.insert(pos - 2, ", " + nick);
1545						return;
1546					}
1547				}
1548				editable.insert(pos, (Character.isWhitespace(before) ? "" : " ") + nick + (Character.isWhitespace(after) ? "" : " "));
1549				if (Character.isWhitespace(after)) {
1550					this.binding.textinput.setSelection(this.binding.textinput.getSelectionStart() + 1);
1551				}
1552			}
1553		}
1554	}
1555
1556
1557	@Override
1558	public void onSaveInstanceState(Bundle outState) {
1559		super.onSaveInstanceState(outState);
1560		if (conversation != null) {
1561			outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
1562		}
1563	}
1564
1565	@Override
1566	public void onActivityCreated(Bundle savedInstanceState) {
1567		super.onActivityCreated(savedInstanceState);
1568		if (savedInstanceState == null) {
1569			return;
1570		}
1571		String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
1572		if (uuid != null) {
1573			this.pendingConversationsUuid.push(uuid);
1574		}
1575	}
1576
1577	@Override
1578	public void onStart() {
1579		super.onStart();
1580		reInit(conversation);
1581		final Bundle extras = pendingExtras.pop();
1582		if (extras != null) {
1583			processExtras(extras);
1584		}
1585	}
1586
1587	@Override
1588	public void onStop() {
1589		super.onStop();
1590		final Activity activity = getActivity();
1591		if (activity == null || !activity.isChangingConfigurations()) {
1592			messageListAdapter.stopAudioPlayer();
1593		}
1594		if (this.conversation != null) {
1595			final String msg = this.binding.textinput.getText().toString();
1596			if (this.conversation.setNextMessage(msg)) {
1597				this.activity.xmppConnectionService.updateConversation(this.conversation);
1598			}
1599			updateChatState(this.conversation, msg);
1600			this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
1601		}
1602	}
1603
1604	private void updateChatState(final Conversation conversation, final String msg) {
1605		ChatState state = msg.length() == 0 ? Config.DEFAULT_CHATSTATE : ChatState.PAUSED;
1606		Account.State status = conversation.getAccount().getStatus();
1607		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
1608			activity.xmppConnectionService.sendChatState(conversation);
1609		}
1610	}
1611
1612	private void saveMessageDraftStopAudioPlayer() {
1613		final Conversation previousConversation = this.conversation;
1614		if (this.activity == null || this.binding == null || previousConversation == null) {
1615			return;
1616		}
1617		Log.d(Config.LOGTAG,"ConversationFragment.saveMessageDraftStopAudioPlayer()");
1618		final String msg = this.binding.textinput.getText().toString();
1619		if (previousConversation.setNextMessage(msg)) {
1620			activity.xmppConnectionService.updateConversation(previousConversation);
1621		}
1622		updateChatState(this.conversation, msg);
1623		messageListAdapter.stopAudioPlayer();
1624	}
1625
1626	public void reInit(Conversation conversation, Bundle extras) {
1627		this.saveMessageDraftStopAudioPlayer();
1628		this.reInit(conversation);
1629		if (extras != null) {
1630			//if binding or activity does not exist we will retry in onStart()
1631			if (this.activity != null && this.binding != null) {
1632				processExtras(extras);
1633			} else {
1634				pendingExtras.push(extras);
1635			}
1636		}
1637	}
1638
1639	private void reInit(Conversation conversation) {
1640		reInit(conversation, false);
1641	}
1642
1643	private void reInit(Conversation conversation, boolean restore) {
1644		if (conversation == null) {
1645			return;
1646		}
1647		this.conversation = conversation;
1648		//once we set the conversation all is good and it will automatically do the right thing in onStart()
1649		if (this.activity == null || this.binding == null) {
1650			return;
1651		}
1652		Log.d(Config.LOGTAG, "reInit(restore="+Boolean.toString(restore)+")");
1653		setupIme();
1654		if (!restore) {
1655			this.conversation.trim();
1656		}
1657
1658		this.binding.textSendButton.setContentDescription(activity.getString(R.string.send_message_to_x, conversation.getName()));
1659		this.binding.textinput.setKeyboardListener(null);
1660		this.binding.textinput.setText("");
1661		this.binding.textinput.append(this.conversation.getNextMessage());
1662		this.binding.textinput.setKeyboardListener(this);
1663		messageListAdapter.updatePreferences();
1664		this.binding.messagesView.setAdapter(messageListAdapter);
1665		refresh(false);
1666		this.conversation.messagesLoaded.set(true);
1667		final boolean isAtBottom;
1668		synchronized (this.messageList) {
1669			final Message first = conversation.getFirstUnreadMessage();
1670			final int bottom = Math.max(0, this.messageList.size() - 1);
1671			final int pos;
1672			if (first == null) {
1673				pos = bottom;
1674			} else {
1675				int i = getIndexOf(first.getUuid(), this.messageList);
1676				pos = i < 0 ? bottom : i;
1677			}
1678			this.binding.messagesView.setSelection(pos);
1679			isAtBottom = pos == bottom;
1680		}
1681
1682		activity.onConversationRead(this.conversation);
1683		//TODO if we only do this when this fragment is running on main it won't *bing* in tablet layout which might be unnecessary since we can *see* it
1684		activity.xmppConnectionService.getNotificationService().setOpenConversation(this.conversation);
1685	}
1686
1687	private void processExtras(Bundle extras) {
1688		final String downloadUuid = extras.getString(ConversationActivity.EXTRA_DOWNLOAD_UUID);
1689		final String text = extras.getString(ConversationActivity.EXTRA_TEXT);
1690		final String nick = extras.getString(ConversationActivity.EXTRA_NICK);
1691		final boolean pm = extras.getBoolean(ConversationActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
1692		if (nick != null) {
1693			if (pm) {
1694				Jid jid = conversation.getJid();
1695				try {
1696					Jid next = Jid.fromParts(jid.getLocalpart(), jid.getDomainpart(), nick);
1697					privateMessageWith(next);
1698				} catch (final InvalidJidException ignored) {
1699					//do nothing
1700				}
1701			} else {
1702				highlightInConference(nick);
1703			}
1704		} else {
1705			appendText(text);
1706		}
1707		final Message message = downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
1708		if (message != null) {
1709			startDownloadable(message);
1710		}
1711	}
1712
1713	private boolean showBlockSubmenu(View view) {
1714		final Jid jid = conversation.getJid();
1715		if (jid.isDomainJid()) {
1716			BlockContactDialog.show(activity, conversation);
1717		} else {
1718			PopupMenu popupMenu = new PopupMenu(getActivity(), view);
1719			popupMenu.inflate(R.menu.block);
1720			popupMenu.setOnMenuItemClickListener(menuItem -> {
1721				Blockable blockable;
1722				switch (menuItem.getItemId()) {
1723					case R.id.block_domain:
1724						blockable = conversation.getAccount().getRoster().getContact(jid.toDomainJid());
1725						break;
1726					default:
1727						blockable = conversation;
1728				}
1729				BlockContactDialog.show(activity, blockable);
1730				return true;
1731			});
1732			popupMenu.show();
1733		}
1734		return true;
1735	}
1736
1737	private void updateSnackBar(final Conversation conversation) {
1738		final Account account = conversation.getAccount();
1739		final XmppConnection connection = account.getXmppConnection();
1740		final int mode = conversation.getMode();
1741		final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
1742		if (account.getStatus() == Account.State.DISABLED) {
1743			showSnackbar(R.string.this_account_is_disabled, R.string.enable, this.mEnableAccountListener);
1744		} else if (conversation.isBlocked()) {
1745			showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
1746		} else if (contact != null && !contact.showInRoster() && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1747			showSnackbar(R.string.contact_added_you, R.string.add_back, this.mAddBackClickListener, this.mLongPressBlockListener);
1748		} else if (contact != null && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
1749			showSnackbar(R.string.contact_asks_for_presence_subscription, R.string.allow, this.mAllowPresenceSubscription, this.mLongPressBlockListener);
1750		} else if (mode == Conversation.MODE_MULTI
1751				&& !conversation.getMucOptions().online()
1752				&& account.getStatus() == Account.State.ONLINE) {
1753			switch (conversation.getMucOptions().getError()) {
1754				case NICK_IN_USE:
1755					showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
1756					break;
1757				case NO_RESPONSE:
1758					showSnackbar(R.string.joining_conference, 0, null);
1759					break;
1760				case SERVER_NOT_FOUND:
1761					if (conversation.receivedMessagesCount() > 0) {
1762						showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
1763					} else {
1764						showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
1765					}
1766					break;
1767				case PASSWORD_REQUIRED:
1768					showSnackbar(R.string.conference_requires_password, R.string.enter_password, enterPassword);
1769					break;
1770				case BANNED:
1771					showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
1772					break;
1773				case MEMBERS_ONLY:
1774					showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
1775					break;
1776				case KICKED:
1777					showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
1778					break;
1779				case UNKNOWN:
1780					showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
1781					break;
1782				case INVALID_NICK:
1783					showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
1784				case SHUTDOWN:
1785					showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
1786					break;
1787				default:
1788					hideSnackbar();
1789					break;
1790			}
1791		} else if (account.hasPendingPgpIntent(conversation)) {
1792			showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
1793		} else if (connection != null
1794				&& connection.getFeatures().blocking()
1795				&& conversation.countMessages() != 0
1796				&& !conversation.isBlocked()
1797				&& conversation.isWithStranger()) {
1798			showSnackbar(R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
1799		} else {
1800			hideSnackbar();
1801		}
1802	}
1803
1804	@Override
1805	public void refresh() {
1806		this.refresh(true);
1807	}
1808
1809
1810	private void refresh(boolean notifyConversationRead) {
1811		synchronized (this.messageList) {
1812			if (this.conversation != null) {
1813				conversation.populateWithMessages(this.messageList);
1814				updateSnackBar(conversation);
1815				updateStatusMessages();
1816				this.messageListAdapter.notifyDataSetChanged();
1817				updateChatMsgHint();
1818				if (notifyConversationRead && activity != null) {
1819					activity.onConversationRead(this.conversation);
1820				}
1821				updateSendButton();
1822				updateEditablity();
1823			}
1824		}
1825	}
1826
1827	protected void messageSent() {
1828		mSendingPgpMessage.set(false);
1829		this.binding.textinput.setText("");
1830		if (conversation.setCorrectingMessage(null)) {
1831			this.binding.textinput.append(conversation.getDraftMessage());
1832			conversation.setDraftMessage(null);
1833		}
1834		if (conversation.setNextMessage(this.binding.textinput.getText().toString())) {
1835			activity.xmppConnectionService.updateConversation(conversation);
1836		}
1837		updateChatMsgHint();
1838		new Handler().post(() -> {
1839			int size = messageList.size();
1840			this.binding.messagesView.setSelection(size - 1);
1841		});
1842	}
1843
1844	public void setFocusOnInputField() {
1845		this.binding.textinput.requestFocus();
1846	}
1847
1848	public void doneSendingPgpMessage() {
1849		mSendingPgpMessage.set(false);
1850	}
1851
1852	public long getMaxHttpUploadSize(Conversation conversation) {
1853		final XmppConnection connection = conversation.getAccount().getXmppConnection();
1854		return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
1855	}
1856
1857	private void updateEditablity() {
1858		boolean canWrite = this.conversation.getMode() == Conversation.MODE_SINGLE || this.conversation.getMucOptions().participating() || this.conversation.getNextCounterpart() != null;
1859		this.binding.textinput.setFocusable(canWrite);
1860		this.binding.textinput.setFocusableInTouchMode(canWrite);
1861		this.binding.textSendButton.setEnabled(canWrite);
1862		this.binding.textinput.setCursorVisible(canWrite);
1863	}
1864
1865	public void updateSendButton() {
1866		boolean useSendButtonToIndicateStatus = PreferenceManager.getDefaultSharedPreferences(getActivity()).getBoolean("send_button_status", getResources().getBoolean(R.bool.send_button_status));
1867		final Conversation c = this.conversation;
1868		final Presence.Status status;
1869		final String text = this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
1870		final SendButtonAction action = SendButtonTool.getAction(getActivity(), c, text);
1871		if (useSendButtonToIndicateStatus && c.getAccount().getStatus() == Account.State.ONLINE) {
1872			if (activity.xmppConnectionService != null && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
1873				status = Presence.Status.OFFLINE;
1874			} else if (c.getMode() == Conversation.MODE_SINGLE) {
1875				status = c.getContact().getShownStatus();
1876			} else {
1877				status = c.getMucOptions().online() ? Presence.Status.ONLINE : Presence.Status.OFFLINE;
1878			}
1879		} else {
1880			status = Presence.Status.OFFLINE;
1881		}
1882		this.binding.textSendButton.setTag(action);
1883		this.binding.textSendButton.setImageResource(SendButtonTool.getSendButtonImageResource(getActivity(), action, status));
1884	}
1885
1886	protected void updateDateSeparators() {
1887		synchronized (this.messageList) {
1888			for (int i = 0; i < this.messageList.size(); ++i) {
1889				final Message current = this.messageList.get(i);
1890				if (i == 0 || !UIHelper.sameDay(this.messageList.get(i - 1).getTimeSent(), current.getTimeSent())) {
1891					this.messageList.add(i, Message.createDateSeparator(current));
1892					i++;
1893				}
1894			}
1895		}
1896	}
1897
1898	protected void updateStatusMessages() {
1899		updateDateSeparators();
1900		synchronized (this.messageList) {
1901			if (showLoadMoreMessages(conversation)) {
1902				this.messageList.add(0, Message.createLoadMoreMessage(conversation));
1903			}
1904			if (conversation.getMode() == Conversation.MODE_SINGLE) {
1905				ChatState state = conversation.getIncomingChatState();
1906				if (state == ChatState.COMPOSING) {
1907					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_is_typing, conversation.getName())));
1908				} else if (state == ChatState.PAUSED) {
1909					this.messageList.add(Message.createStatusMessage(conversation, getString(R.string.contact_has_stopped_typing, conversation.getName())));
1910				} else {
1911					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1912						if (this.messageList.get(i).getStatus() == Message.STATUS_RECEIVED) {
1913							return;
1914						} else {
1915							if (this.messageList.get(i).getStatus() == Message.STATUS_SEND_DISPLAYED) {
1916								this.messageList.add(i + 1,
1917										Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, conversation.getName())));
1918								return;
1919							}
1920						}
1921					}
1922				}
1923			} else {
1924				final MucOptions mucOptions = conversation.getMucOptions();
1925				final List<MucOptions.User> allUsers = mucOptions.getUsers();
1926				final Set<ReadByMarker> addedMarkers = new HashSet<>();
1927				ChatState state = ChatState.COMPOSING;
1928				List<MucOptions.User> users = conversation.getMucOptions().getUsersWithChatState(state, 5);
1929				if (users.size() == 0) {
1930					state = ChatState.PAUSED;
1931					users = conversation.getMucOptions().getUsersWithChatState(state, 5);
1932				}
1933				if (mucOptions.isPrivateAndNonAnonymous()) {
1934					for (int i = this.messageList.size() - 1; i >= 0; --i) {
1935						final Set<ReadByMarker> markersForMessage = messageList.get(i).getReadByMarkers();
1936						final List<MucOptions.User> shownMarkers = new ArrayList<>();
1937						for (ReadByMarker marker : markersForMessage) {
1938							if (!ReadByMarker.contains(marker, addedMarkers)) {
1939								addedMarkers.add(marker); //may be put outside this condition. set should do dedup anyway
1940								MucOptions.User user = mucOptions.findUser(marker);
1941								if (user != null && !users.contains(user)) {
1942									shownMarkers.add(user);
1943								}
1944							}
1945						}
1946						final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
1947						final Message statusMessage;
1948						final int size = shownMarkers.size();
1949						if (size > 1) {
1950							final String body;
1951							if (size <= 4) {
1952								body = getString(R.string.contacts_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers));
1953							} else {
1954								body = getString(R.string.contacts_and_n_more_have_read_up_to_this_point, UIHelper.concatNames(shownMarkers, 3), size - 3);
1955							}
1956							statusMessage = Message.createStatusMessage(conversation, body);
1957							statusMessage.setCounterparts(shownMarkers);
1958						} else if (size == 1) {
1959							statusMessage = Message.createStatusMessage(conversation, getString(R.string.contact_has_read_up_to_this_point, UIHelper.getDisplayName(shownMarkers.get(0))));
1960							statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
1961							statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
1962						} else {
1963							statusMessage = null;
1964						}
1965						if (statusMessage != null) {
1966							this.messageList.add(i + 1, statusMessage);
1967						}
1968						addedMarkers.add(markerForSender);
1969						if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
1970							break;
1971						}
1972					}
1973				}
1974				if (users.size() > 0) {
1975					Message statusMessage;
1976					if (users.size() == 1) {
1977						MucOptions.User user = users.get(0);
1978						int id = state == ChatState.COMPOSING ? R.string.contact_is_typing : R.string.contact_has_stopped_typing;
1979						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.getDisplayName(user)));
1980						statusMessage.setTrueCounterpart(user.getRealJid());
1981						statusMessage.setCounterpart(user.getFullJid());
1982					} else {
1983						int id = state == ChatState.COMPOSING ? R.string.contacts_are_typing : R.string.contacts_have_stopped_typing;
1984						statusMessage = Message.createStatusMessage(conversation, getString(id, UIHelper.concatNames(users)));
1985						statusMessage.setCounterparts(users);
1986					}
1987					this.messageList.add(statusMessage);
1988				}
1989
1990			}
1991		}
1992	}
1993
1994	public void stopScrolling() {
1995		long now = SystemClock.uptimeMillis();
1996		MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
1997		binding.messagesView.dispatchTouchEvent(cancel);
1998	}
1999
2000	private boolean showLoadMoreMessages(final Conversation c) {
2001		final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
2002		final MessageArchiveService service = activity.xmppConnectionService.getMessageArchiveService();
2003		return mam && (c.getLastClearHistory().getTimestamp() != 0 || (c.countMessages() == 0 && c.messagesLoaded.get() && c.hasMessagesLeftOnServer() && !service.queryInProgress(c)));
2004	}
2005
2006	private boolean hasMamSupport(final Conversation c) {
2007		if (c.getMode() == Conversation.MODE_SINGLE) {
2008			final XmppConnection connection = c.getAccount().getXmppConnection();
2009			return connection != null && connection.getFeatures().mam();
2010		} else {
2011			return c.getMucOptions().mamSupport();
2012		}
2013	}
2014
2015	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener) {
2016		showSnackbar(message, action, clickListener, null);
2017	}
2018
2019	protected void showSnackbar(final int message, final int action, final OnClickListener clickListener, final View.OnLongClickListener longClickListener) {
2020		this.binding.snackbar.setVisibility(View.VISIBLE);
2021		this.binding.snackbar.setOnClickListener(null);
2022		this.binding.snackbarMessage.setText(message);
2023		this.binding.snackbarMessage.setOnClickListener(null);
2024		this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
2025		if (action != 0) {
2026			this.binding.snackbarAction.setText(action);
2027		}
2028		this.binding.snackbarAction.setOnClickListener(clickListener);
2029		this.binding.snackbarAction.setOnLongClickListener(longClickListener);
2030	}
2031
2032	protected void hideSnackbar() {
2033		this.binding.snackbar.setVisibility(View.GONE);
2034	}
2035
2036	protected void sendPlainTextMessage(Message message) {
2037		activity.xmppConnectionService.sendMessage(message);
2038		messageSent();
2039	}
2040
2041	protected void sendPgpMessage(final Message message) {
2042		final XmppConnectionService xmppService = activity.xmppConnectionService;
2043		final Contact contact = message.getConversation().getContact();
2044		if (!activity.hasPgp()) {
2045			activity.showInstallPgpDialog();
2046			return;
2047		}
2048		if (conversation.getAccount().getPgpSignature() == null) {
2049			activity.announcePgp(conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
2050			return;
2051		}
2052		if (!mSendingPgpMessage.compareAndSet(false, true)) {
2053			Log.d(Config.LOGTAG, "sending pgp message already in progress");
2054		}
2055		if (conversation.getMode() == Conversation.MODE_SINGLE) {
2056			if (contact.getPgpKeyId() != 0) {
2057				xmppService.getPgpEngine().hasKey(contact,
2058						new UiCallback<Contact>() {
2059
2060							@Override
2061							public void userInputRequried(PendingIntent pi, Contact contact) {
2062								startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
2063							}
2064
2065							@Override
2066							public void success(Contact contact) {
2067								encryptTextMessage(message);
2068							}
2069
2070							@Override
2071							public void error(int error, Contact contact) {
2072								activity.runOnUiThread(() -> Toast.makeText(activity,
2073										R.string.unable_to_connect_to_keychain,
2074										Toast.LENGTH_SHORT
2075								).show());
2076								mSendingPgpMessage.set(false);
2077							}
2078						});
2079
2080			} else {
2081				showNoPGPKeyDialog(false, (dialog, which) -> {
2082					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2083					xmppService.updateConversation(conversation);
2084					message.setEncryption(Message.ENCRYPTION_NONE);
2085					xmppService.sendMessage(message);
2086					messageSent();
2087				});
2088			}
2089		} else {
2090			if (conversation.getMucOptions().pgpKeysInUse()) {
2091				if (!conversation.getMucOptions().everybodyHasKeys()) {
2092					Toast warning = Toast
2093							.makeText(getActivity(),
2094									R.string.missing_public_keys,
2095									Toast.LENGTH_LONG);
2096					warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2097					warning.show();
2098				}
2099				encryptTextMessage(message);
2100			} else {
2101				showNoPGPKeyDialog(true, (dialog, which) -> {
2102					conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2103					message.setEncryption(Message.ENCRYPTION_NONE);
2104					xmppService.updateConversation(conversation);
2105					xmppService.sendMessage(message);
2106					messageSent();
2107				});
2108			}
2109		}
2110	}
2111
2112	public void encryptTextMessage(Message message) {
2113		activity.xmppConnectionService.getPgpEngine().encrypt(message,
2114				new UiCallback<Message>() {
2115
2116					@Override
2117					public void userInputRequried(PendingIntent pi, Message message) {
2118						startPendingIntent(pi, REQUEST_SEND_MESSAGE);
2119					}
2120
2121					@Override
2122					public void success(Message message) {
2123						message.setEncryption(Message.ENCRYPTION_DECRYPTED);
2124						activity.xmppConnectionService.sendMessage(message);
2125						getActivity().runOnUiThread(() -> messageSent());
2126					}
2127
2128					@Override
2129					public void error(final int error, Message message) {
2130						getActivity().runOnUiThread(() -> {
2131							doneSendingPgpMessage();
2132							Toast.makeText(getActivity(), R.string.unable_to_connect_to_keychain, Toast.LENGTH_SHORT).show();
2133						});
2134
2135					}
2136				});
2137	}
2138
2139	public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
2140		AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
2141		builder.setIconAttribute(android.R.attr.alertDialogIcon);
2142		if (plural) {
2143			builder.setTitle(getString(R.string.no_pgp_keys));
2144			builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
2145		} else {
2146			builder.setTitle(getString(R.string.no_pgp_key));
2147			builder.setMessage(getText(R.string.contact_has_no_pgp_key));
2148		}
2149		builder.setNegativeButton(getString(R.string.cancel), null);
2150		builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
2151		builder.create().show();
2152	}
2153
2154	protected void sendAxolotlMessage(final Message message) {
2155		activity.xmppConnectionService.sendMessage(message);
2156		messageSent();
2157	}
2158
2159	public void appendText(String text) {
2160		if (text == null) {
2161			return;
2162		}
2163		String previous = this.binding.textinput.getText().toString();
2164		if (previous.length() != 0 && !previous.endsWith(" ")) {
2165			text = " " + text;
2166		}
2167		this.binding.textinput.append(text);
2168	}
2169
2170	@Override
2171	public boolean onEnterPressed() {
2172		SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
2173		final boolean enterIsSend = p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
2174		if (enterIsSend) {
2175			sendMessage();
2176			return true;
2177		} else {
2178			return false;
2179		}
2180	}
2181
2182	@Override
2183	public void onTypingStarted() {
2184		Account.State status = conversation.getAccount().getStatus();
2185		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
2186			activity.xmppConnectionService.sendChatState(conversation);
2187		}
2188		updateSendButton();
2189	}
2190
2191	@Override
2192	public void onTypingStopped() {
2193		Account.State status = conversation.getAccount().getStatus();
2194		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
2195			activity.xmppConnectionService.sendChatState(conversation);
2196		}
2197	}
2198
2199	@Override
2200	public void onTextDeleted() {
2201		Account.State status = conversation.getAccount().getStatus();
2202		if (status == Account.State.ONLINE && conversation.setOutgoingChatState(Config.DEFAULT_CHATSTATE)) {
2203			activity.xmppConnectionService.sendChatState(conversation);
2204		}
2205		updateSendButton();
2206	}
2207
2208	@Override
2209	public void onTextChanged() {
2210		if (conversation != null && conversation.getCorrectingMessage() != null) {
2211			updateSendButton();
2212		}
2213	}
2214
2215	@Override
2216	public boolean onTabPressed(boolean repeated) {
2217		if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
2218			return false;
2219		}
2220		if (repeated) {
2221			completionIndex++;
2222		} else {
2223			lastCompletionLength = 0;
2224			completionIndex = 0;
2225			final String content = this.binding.textinput.getText().toString();
2226			lastCompletionCursor = this.binding.textinput.getSelectionEnd();
2227			int start = lastCompletionCursor > 0 ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1 : 0;
2228			firstWord = start == 0;
2229			incomplete = content.substring(start, lastCompletionCursor);
2230		}
2231		List<String> completions = new ArrayList<>();
2232		for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
2233			String name = user.getName();
2234			if (name != null && name.startsWith(incomplete)) {
2235				completions.add(name + (firstWord ? ": " : " "));
2236			}
2237		}
2238		Collections.sort(completions);
2239		if (completions.size() > completionIndex) {
2240			String completion = completions.get(completionIndex).substring(incomplete.length());
2241			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2242			this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
2243			lastCompletionLength = completion.length();
2244		} else {
2245			completionIndex = -1;
2246			this.binding.textinput.getEditableText().delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
2247			lastCompletionLength = 0;
2248		}
2249		return true;
2250	}
2251
2252	private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
2253		try {
2254			getActivity().startIntentSenderForResult(pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
2255		} catch (final SendIntentException ignored) {
2256		}
2257	}
2258
2259	@Override
2260	public void onBackendConnected() {
2261		Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
2262		String uuid = pendingConversationsUuid.pop();
2263		if (uuid != null) {
2264			Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
2265			if (conversation == null) {
2266				Log.d(Config.LOGTAG, "unable to restore activity");
2267				clearPending();
2268				return;
2269			}
2270			reInit(conversation, true);
2271		}
2272		ActivityResult activityResult = postponedActivityResult.pop();
2273		if (activityResult != null) {
2274			handleActivityResult(activityResult);
2275		}
2276	}
2277
2278	public void clearPending() {
2279		if (postponedActivityResult.pop() != null) {
2280			Log.d(Config.LOGTAG, "cleared pending intent with unhandled result left");
2281		}
2282	}
2283
2284	public static Conversation getConversation(Activity activity) {
2285		return getConversation(activity, R.id.secondary_fragment);
2286	}
2287
2288	private static Conversation getConversation(Activity activity, @IdRes int res) {
2289		final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
2290		if (fragment != null && fragment instanceof ConversationFragment) {
2291			return ((ConversationFragment) fragment).getConversation();
2292		} else {
2293			return null;
2294		}
2295	}
2296
2297	public static Conversation getConversationReliable(Activity activity) {
2298		final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
2299		if (conversation != null) {
2300			return conversation;
2301		}
2302		return getConversation(activity, R.id.main_fragment);
2303	}
2304
2305	public Conversation getConversation() {
2306		return conversation;
2307	}
2308}