ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
   4import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
   5import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
   6import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
   7import static eu.siacs.conversations.utils.PermissionUtils.audioGranted;
   8import static eu.siacs.conversations.utils.PermissionUtils.cameraGranted;
   9import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
  10import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
  11
  12import android.Manifest;
  13import android.annotation.SuppressLint;
  14import android.app.Activity;
  15import android.app.Fragment;
  16import android.app.FragmentManager;
  17import android.app.PendingIntent;
  18import android.content.ActivityNotFoundException;
  19import android.content.Context;
  20import android.content.DialogInterface;
  21import android.content.Intent;
  22import android.content.IntentSender.SendIntentException;
  23import android.content.SharedPreferences;
  24import android.content.pm.PackageManager;
  25import android.content.res.ColorStateList;
  26import android.net.Uri;
  27import android.os.Build;
  28import android.os.Bundle;
  29import android.os.Handler;
  30import android.os.SystemClock;
  31import android.preference.PreferenceManager;
  32import android.provider.MediaStore;
  33import android.text.Editable;
  34import android.text.TextUtils;
  35import android.util.Log;
  36import android.view.ContextMenu;
  37import android.view.ContextMenu.ContextMenuInfo;
  38import android.view.Gravity;
  39import android.view.LayoutInflater;
  40import android.view.Menu;
  41import android.view.MenuInflater;
  42import android.view.MenuItem;
  43import android.view.MotionEvent;
  44import android.view.View;
  45import android.view.View.OnClickListener;
  46import android.view.ViewGroup;
  47import android.view.inputmethod.EditorInfo;
  48import android.view.inputmethod.InputMethodManager;
  49import android.widget.AbsListView;
  50import android.widget.AbsListView.OnScrollListener;
  51import android.widget.AdapterView;
  52import android.widget.AdapterView.AdapterContextMenuInfo;
  53import android.widget.CheckBox;
  54import android.widget.ListView;
  55import android.widget.PopupMenu;
  56import android.widget.TextView.OnEditorActionListener;
  57import android.widget.Toast;
  58
  59import androidx.annotation.IdRes;
  60import androidx.annotation.NonNull;
  61import androidx.annotation.StringRes;
  62import androidx.core.view.inputmethod.InputConnectionCompat;
  63import androidx.core.view.inputmethod.InputContentInfoCompat;
  64import androidx.databinding.DataBindingUtil;
  65
  66import com.google.android.material.dialog.MaterialAlertDialogBuilder;
  67import com.google.common.base.Optional;
  68import com.google.common.collect.ImmutableList;
  69
  70import eu.siacs.conversations.Config;
  71import eu.siacs.conversations.R;
  72import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  73import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  74import eu.siacs.conversations.databinding.FragmentConversationBinding;
  75import eu.siacs.conversations.entities.Account;
  76import eu.siacs.conversations.entities.Blockable;
  77import eu.siacs.conversations.entities.Contact;
  78import eu.siacs.conversations.entities.Conversation;
  79import eu.siacs.conversations.entities.Conversational;
  80import eu.siacs.conversations.entities.DownloadableFile;
  81import eu.siacs.conversations.entities.Message;
  82import eu.siacs.conversations.entities.MucOptions;
  83import eu.siacs.conversations.entities.MucOptions.User;
  84import eu.siacs.conversations.entities.Presence;
  85import eu.siacs.conversations.entities.ReadByMarker;
  86import eu.siacs.conversations.entities.Transferable;
  87import eu.siacs.conversations.entities.TransferablePlaceholder;
  88import eu.siacs.conversations.http.HttpDownloadConnection;
  89import eu.siacs.conversations.persistance.FileBackend;
  90import eu.siacs.conversations.services.CallIntegrationConnectionService;
  91import eu.siacs.conversations.services.MessageArchiveService;
  92import eu.siacs.conversations.services.QuickConversationsService;
  93import eu.siacs.conversations.services.XmppConnectionService;
  94import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  95import eu.siacs.conversations.ui.adapter.MessageAdapter;
  96import eu.siacs.conversations.ui.util.ActivityResult;
  97import eu.siacs.conversations.ui.util.Attachment;
  98import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  99import eu.siacs.conversations.ui.util.DateSeparator;
 100import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 101import eu.siacs.conversations.ui.util.ListViewUtils;
 102import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 103import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 104import eu.siacs.conversations.ui.util.PendingItem;
 105import eu.siacs.conversations.ui.util.PresenceSelector;
 106import eu.siacs.conversations.ui.util.ScrollState;
 107import eu.siacs.conversations.ui.util.SendButtonAction;
 108import eu.siacs.conversations.ui.util.SendButtonTool;
 109import eu.siacs.conversations.ui.util.ShareUtil;
 110import eu.siacs.conversations.ui.util.ViewUtil;
 111import eu.siacs.conversations.ui.widget.EditMessage;
 112import eu.siacs.conversations.utils.AccountUtils;
 113import eu.siacs.conversations.utils.Compatibility;
 114import eu.siacs.conversations.utils.GeoHelper;
 115import eu.siacs.conversations.utils.MessageUtils;
 116import eu.siacs.conversations.utils.NickValidityChecker;
 117import eu.siacs.conversations.utils.PermissionUtils;
 118import eu.siacs.conversations.utils.QuickLoader;
 119import eu.siacs.conversations.utils.StylingHelper;
 120import eu.siacs.conversations.utils.TimeFrameUtils;
 121import eu.siacs.conversations.utils.UIHelper;
 122import eu.siacs.conversations.xmpp.Jid;
 123import eu.siacs.conversations.xmpp.XmppConnection;
 124import eu.siacs.conversations.xmpp.chatstate.ChatState;
 125import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 126import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 127import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 128import eu.siacs.conversations.xmpp.jingle.Media;
 129import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 130import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 131import eu.siacs.conversations.xmpp.jingle.RtpEndUserState;
 132
 133
 134import java.util.ArrayList;
 135import java.util.Arrays;
 136import java.util.Collection;
 137import java.util.Collections;
 138import java.util.HashSet;
 139import java.util.Iterator;
 140import java.util.List;
 141import java.util.Set;
 142import java.util.UUID;
 143import java.util.concurrent.atomic.AtomicBoolean;
 144
 145public class ConversationFragment extends XmppFragment
 146        implements EditMessage.KeyboardListener,
 147                MessageAdapter.OnContactPictureLongClicked,
 148                MessageAdapter.OnContactPictureClicked {
 149
 150    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 151    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 152    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 153    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 154    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 155    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 156    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 157    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 158    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 159    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 160    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 161    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 162    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 163    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 164    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 165    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 166    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 167
 168    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 169    public static final String STATE_CONVERSATION_UUID =
 170            ConversationFragment.class.getName() + ".uuid";
 171    public static final String STATE_SCROLL_POSITION =
 172            ConversationFragment.class.getName() + ".scroll_position";
 173    public static final String STATE_PHOTO_URI =
 174            ConversationFragment.class.getName() + ".media_previews";
 175    public static final String STATE_MEDIA_PREVIEWS =
 176            ConversationFragment.class.getName() + ".take_photo_uri";
 177    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 178
 179    private final List<Message> messageList = new ArrayList<>();
 180    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 181    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 182    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 183    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 184    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 185    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 186    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 187    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 188    public Uri mPendingEditorContent = null;
 189    protected MessageAdapter messageListAdapter;
 190    private MediaPreviewAdapter mediaPreviewAdapter;
 191    private String lastMessageUuid = null;
 192    private Conversation conversation;
 193    private FragmentConversationBinding binding;
 194    private Toast messageLoaderToast;
 195    private ConversationsActivity activity;
 196    private boolean reInitRequiredOnStart = true;
 197    private final OnClickListener clickToMuc =
 198            new OnClickListener() {
 199
 200                @Override
 201                public void onClick(View v) {
 202                    ConferenceDetailsActivity.open(getActivity(), conversation);
 203                }
 204            };
 205    private final OnClickListener leaveMuc =
 206            new OnClickListener() {
 207
 208                @Override
 209                public void onClick(View v) {
 210                    activity.xmppConnectionService.archiveConversation(conversation);
 211                }
 212            };
 213    private final OnClickListener joinMuc =
 214            new OnClickListener() {
 215
 216                @Override
 217                public void onClick(View v) {
 218                    activity.xmppConnectionService.joinMuc(conversation);
 219                }
 220            };
 221
 222    private final OnClickListener acceptJoin =
 223            new OnClickListener() {
 224                @Override
 225                public void onClick(View v) {
 226                    conversation.setAttribute("accept_non_anonymous", true);
 227                    activity.xmppConnectionService.updateConversation(conversation);
 228                    activity.xmppConnectionService.joinMuc(conversation);
 229                }
 230            };
 231
 232    private final OnClickListener enterPassword =
 233            new OnClickListener() {
 234
 235                @Override
 236                public void onClick(View v) {
 237                    MucOptions muc = conversation.getMucOptions();
 238                    String password = muc.getPassword();
 239                    if (password == null) {
 240                        password = "";
 241                    }
 242                    activity.quickPasswordEdit(
 243                            password,
 244                            value -> {
 245                                activity.xmppConnectionService.providePasswordForMuc(
 246                                        conversation, value);
 247                                return null;
 248                            });
 249                }
 250            };
 251    private final OnScrollListener mOnScrollListener =
 252            new OnScrollListener() {
 253
 254                @Override
 255                public void onScrollStateChanged(AbsListView view, int scrollState) {
 256                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 257                        fireReadEvent();
 258                    }
 259                }
 260
 261                @Override
 262                public void onScroll(
 263                        final AbsListView view,
 264                        int firstVisibleItem,
 265                        int visibleItemCount,
 266                        int totalItemCount) {
 267                    toggleScrollDownButton(view);
 268                    synchronized (ConversationFragment.this.messageList) {
 269                        if (firstVisibleItem < 5
 270                                && conversation != null
 271                                && conversation.messagesLoaded.compareAndSet(true, false)
 272                                && messageList.size() > 0) {
 273                            long timestamp;
 274                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 275                                    && messageList.size() >= 2) {
 276                                timestamp = messageList.get(1).getTimeSent();
 277                            } else {
 278                                timestamp = messageList.get(0).getTimeSent();
 279                            }
 280                            activity.xmppConnectionService.loadMoreMessages(
 281                                    conversation,
 282                                    timestamp,
 283                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 284                                        @Override
 285                                        public void onMoreMessagesLoaded(
 286                                                final int c, final Conversation conversation) {
 287                                            if (ConversationFragment.this.conversation
 288                                                    != conversation) {
 289                                                conversation.messagesLoaded.set(true);
 290                                                return;
 291                                            }
 292                                            runOnUiThread(
 293                                                    () -> {
 294                                                        synchronized (messageList) {
 295                                                            final int oldPosition =
 296                                                                    binding.messagesView
 297                                                                            .getFirstVisiblePosition();
 298                                                            Message message = null;
 299                                                            int childPos;
 300                                                            for (childPos = 0;
 301                                                                    childPos + oldPosition
 302                                                                            < messageList.size();
 303                                                                    ++childPos) {
 304                                                                message =
 305                                                                        messageList.get(
 306                                                                                oldPosition
 307                                                                                        + childPos);
 308                                                                if (message.getType()
 309                                                                        != Message.TYPE_STATUS) {
 310                                                                    break;
 311                                                                }
 312                                                            }
 313                                                            final String uuid =
 314                                                                    message != null
 315                                                                            ? message.getUuid()
 316                                                                            : null;
 317                                                            View v =
 318                                                                    binding.messagesView.getChildAt(
 319                                                                            childPos);
 320                                                            final int pxOffset =
 321                                                                    (v == null) ? 0 : v.getTop();
 322                                                            ConversationFragment.this.conversation
 323                                                                    .populateWithMessages(
 324                                                                            ConversationFragment
 325                                                                                    .this
 326                                                                                    .messageList);
 327                                                            try {
 328                                                                updateStatusMessages();
 329                                                            } catch (IllegalStateException e) {
 330                                                                Log.d(
 331                                                                        Config.LOGTAG,
 332                                                                        "caught illegal state exception while updating status messages");
 333                                                            }
 334                                                            messageListAdapter
 335                                                                    .notifyDataSetChanged();
 336                                                            int pos =
 337                                                                    Math.max(
 338                                                                            getIndexOf(
 339                                                                                    uuid,
 340                                                                                    messageList),
 341                                                                            0);
 342                                                            binding.messagesView
 343                                                                    .setSelectionFromTop(
 344                                                                            pos, pxOffset);
 345                                                            if (messageLoaderToast != null) {
 346                                                                messageLoaderToast.cancel();
 347                                                            }
 348                                                            conversation.messagesLoaded.set(true);
 349                                                        }
 350                                                    });
 351                                        }
 352
 353                                        @Override
 354                                        public void informUser(final int resId) {
 355
 356                                            runOnUiThread(
 357                                                    () -> {
 358                                                        if (messageLoaderToast != null) {
 359                                                            messageLoaderToast.cancel();
 360                                                        }
 361                                                        if (ConversationFragment.this.conversation
 362                                                                != conversation) {
 363                                                            return;
 364                                                        }
 365                                                        messageLoaderToast =
 366                                                                Toast.makeText(
 367                                                                        view.getContext(),
 368                                                                        resId,
 369                                                                        Toast.LENGTH_LONG);
 370                                                        messageLoaderToast.show();
 371                                                    });
 372                                        }
 373                                    });
 374                        }
 375                    }
 376                }
 377            };
 378    private final EditMessage.OnCommitContentListener mEditorContentListener =
 379            new EditMessage.OnCommitContentListener() {
 380                @Override
 381                public boolean onCommitContent(
 382                        InputContentInfoCompat inputContentInfo,
 383                        int flags,
 384                        Bundle opts,
 385                        String[] contentMimeTypes) {
 386                    // try to get permission to read the image, if applicable
 387                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 388                            != 0) {
 389                        try {
 390                            inputContentInfo.requestPermission();
 391                        } catch (Exception e) {
 392                            Log.e(
 393                                    Config.LOGTAG,
 394                                    "InputContentInfoCompat#requestPermission() failed.",
 395                                    e);
 396                            Toast.makeText(
 397                                            getActivity(),
 398                                            activity.getString(
 399                                                    R.string.no_permission_to_access_x,
 400                                                    inputContentInfo.getDescription()),
 401                                            Toast.LENGTH_LONG)
 402                                    .show();
 403                            return false;
 404                        }
 405                    }
 406                    if (hasPermissions(
 407                            REQUEST_ADD_EDITOR_CONTENT,
 408                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 409                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 410                    } else {
 411                        mPendingEditorContent = inputContentInfo.getContentUri();
 412                    }
 413                    return true;
 414                }
 415            };
 416    private Message selectedMessage;
 417    private final OnClickListener mEnableAccountListener =
 418            new OnClickListener() {
 419                @Override
 420                public void onClick(View v) {
 421                    final Account account = conversation == null ? null : conversation.getAccount();
 422                    if (account != null) {
 423                        account.setOption(Account.OPTION_SOFT_DISABLED, false);
 424                        account.setOption(Account.OPTION_DISABLED, false);
 425                        activity.xmppConnectionService.updateAccount(account);
 426                    }
 427                }
 428            };
 429    private final OnClickListener mUnblockClickListener =
 430            new OnClickListener() {
 431                @Override
 432                public void onClick(final View v) {
 433                    v.post(() -> v.setVisibility(View.INVISIBLE));
 434                    if (conversation.isDomainBlocked()) {
 435                        BlockContactDialog.show(activity, conversation);
 436                    } else {
 437                        unblockConversation(conversation);
 438                    }
 439                }
 440            };
 441    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 442    private final OnClickListener mAddBackClickListener =
 443            new OnClickListener() {
 444
 445                @Override
 446                public void onClick(View v) {
 447                    final Contact contact = conversation == null ? null : conversation.getContact();
 448                    if (contact != null) {
 449                        activity.xmppConnectionService.createContact(contact, true);
 450                        activity.switchToContactDetails(contact);
 451                    }
 452                }
 453            };
 454    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 455    private final OnClickListener mAllowPresenceSubscription =
 456            new OnClickListener() {
 457                @Override
 458                public void onClick(View v) {
 459                    final Contact contact = conversation == null ? null : conversation.getContact();
 460                    if (contact != null) {
 461                        activity.xmppConnectionService.sendPresencePacket(
 462                                contact.getAccount(),
 463                                activity.xmppConnectionService
 464                                        .getPresenceGenerator()
 465                                        .sendPresenceUpdatesTo(contact));
 466                        hideSnackbar();
 467                    }
 468                }
 469            };
 470    protected OnClickListener clickToDecryptListener =
 471            new OnClickListener() {
 472
 473                @Override
 474                public void onClick(View v) {
 475                    PendingIntent pendingIntent =
 476                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 477                    if (pendingIntent != null) {
 478                        try {
 479                            getActivity()
 480                                    .startIntentSenderForResult(
 481                                            pendingIntent.getIntentSender(),
 482                                            REQUEST_DECRYPT_PGP,
 483                                            null,
 484                                            0,
 485                                            0,
 486                                            0,
 487                                            Compatibility.pgpStartIntentSenderOptions());
 488                        } catch (SendIntentException e) {
 489                            Toast.makeText(
 490                                            getActivity(),
 491                                            R.string.unable_to_connect_to_keychain,
 492                                            Toast.LENGTH_SHORT)
 493                                    .show();
 494                            conversation
 495                                    .getAccount()
 496                                    .getPgpDecryptionService()
 497                                    .continueDecryption(true);
 498                        }
 499                    }
 500                    updateSnackBar(conversation);
 501                }
 502            };
 503    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 504    private final OnEditorActionListener mEditorActionListener =
 505            (v, actionId, event) -> {
 506                if (actionId == EditorInfo.IME_ACTION_SEND) {
 507                    InputMethodManager imm =
 508                            (InputMethodManager)
 509                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 510                    if (imm != null && imm.isFullscreenMode()) {
 511                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 512                    }
 513                    sendMessage();
 514                    return true;
 515                } else {
 516                    return false;
 517                }
 518            };
 519    private final OnClickListener mScrollButtonListener =
 520            new OnClickListener() {
 521
 522                @Override
 523                public void onClick(View v) {
 524                    stopScrolling();
 525                    setSelection(binding.messagesView.getCount() - 1, true);
 526                }
 527            };
 528    private final OnClickListener mSendButtonListener =
 529            new OnClickListener() {
 530
 531                @Override
 532                public void onClick(View v) {
 533                    Object tag = v.getTag();
 534                    if (tag instanceof SendButtonAction) {
 535                        SendButtonAction action = (SendButtonAction) tag;
 536                        switch (action) {
 537                            case TAKE_PHOTO:
 538                            case RECORD_VIDEO:
 539                            case SEND_LOCATION:
 540                            case RECORD_VOICE:
 541                            case CHOOSE_PICTURE:
 542                                attachFile(action.toChoice());
 543                                break;
 544                            case CANCEL:
 545                                if (conversation != null) {
 546                                    if (conversation.setCorrectingMessage(null)) {
 547                                        binding.textinput.setText("");
 548                                        binding.textinput.append(conversation.getDraftMessage());
 549                                        conversation.setDraftMessage(null);
 550                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 551                                        conversation.setNextCounterpart(null);
 552                                        binding.textinput.setText("");
 553                                    } else {
 554                                        binding.textinput.setText("");
 555                                    }
 556                                    updateChatMsgHint();
 557                                    updateSendButton();
 558                                    updateEditablity();
 559                                }
 560                                break;
 561                            default:
 562                                sendMessage();
 563                        }
 564                    } else {
 565                        sendMessage();
 566                    }
 567                }
 568            };
 569    private int completionIndex = 0;
 570    private int lastCompletionLength = 0;
 571    private String incomplete;
 572    private int lastCompletionCursor;
 573    private boolean firstWord = false;
 574    private Message mPendingDownloadableMessage;
 575
 576    private static ConversationFragment findConversationFragment(Activity activity) {
 577        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 578        if (fragment instanceof ConversationFragment) {
 579            return (ConversationFragment) fragment;
 580        }
 581        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 582        if (fragment instanceof ConversationFragment) {
 583            return (ConversationFragment) fragment;
 584        }
 585        return null;
 586    }
 587
 588    public static void startStopPending(Activity activity) {
 589        ConversationFragment fragment = findConversationFragment(activity);
 590        if (fragment != null) {
 591            fragment.messageListAdapter.startStopPending();
 592        }
 593    }
 594
 595    public static void downloadFile(Activity activity, Message message) {
 596        ConversationFragment fragment = findConversationFragment(activity);
 597        if (fragment != null) {
 598            fragment.startDownloadable(message);
 599        }
 600    }
 601
 602    public static void registerPendingMessage(Activity activity, Message message) {
 603        ConversationFragment fragment = findConversationFragment(activity);
 604        if (fragment != null) {
 605            fragment.pendingMessage.push(message);
 606        }
 607    }
 608
 609    public static void openPendingMessage(Activity activity) {
 610        ConversationFragment fragment = findConversationFragment(activity);
 611        if (fragment != null) {
 612            Message message = fragment.pendingMessage.pop();
 613            if (message != null) {
 614                fragment.messageListAdapter.openDownloadable(message);
 615            }
 616        }
 617    }
 618
 619    public static Conversation getConversation(Activity activity) {
 620        return getConversation(activity, R.id.secondary_fragment);
 621    }
 622
 623    private static Conversation getConversation(Activity activity, @IdRes int res) {
 624        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 625        if (fragment instanceof ConversationFragment) {
 626            return ((ConversationFragment) fragment).getConversation();
 627        } else {
 628            return null;
 629        }
 630    }
 631
 632    public static ConversationFragment get(Activity activity) {
 633        FragmentManager fragmentManager = activity.getFragmentManager();
 634        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 635        if (fragment instanceof ConversationFragment) {
 636            return (ConversationFragment) fragment;
 637        } else {
 638            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 639            return fragment instanceof ConversationFragment
 640                    ? (ConversationFragment) fragment
 641                    : null;
 642        }
 643    }
 644
 645    public static Conversation getConversationReliable(Activity activity) {
 646        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 647        if (conversation != null) {
 648            return conversation;
 649        }
 650        return getConversation(activity, R.id.main_fragment);
 651    }
 652
 653    private static boolean scrolledToBottom(AbsListView listView) {
 654        final int count = listView.getCount();
 655        if (count == 0) {
 656            return true;
 657        } else if (listView.getLastVisiblePosition() == count - 1) {
 658            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 659            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 660        } else {
 661            return false;
 662        }
 663    }
 664
 665    private void toggleScrollDownButton() {
 666        toggleScrollDownButton(binding.messagesView);
 667    }
 668
 669    private void toggleScrollDownButton(AbsListView listView) {
 670        if (conversation == null) {
 671            return;
 672        }
 673        if (scrolledToBottom(listView)) {
 674            lastMessageUuid = null;
 675            hideUnreadMessagesCount();
 676        } else {
 677            binding.scrollToBottomButton.setEnabled(true);
 678            binding.scrollToBottomButton.show();
 679            if (lastMessageUuid == null) {
 680                lastMessageUuid = conversation.getLatestMessage().getUuid();
 681            }
 682            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 683                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 684            }
 685        }
 686    }
 687
 688    private int getIndexOf(String uuid, List<Message> messages) {
 689        if (uuid == null) {
 690            return messages.size() - 1;
 691        }
 692        for (int i = 0; i < messages.size(); ++i) {
 693            if (uuid.equals(messages.get(i).getUuid())) {
 694                return i;
 695            } else {
 696                Message next = messages.get(i);
 697                while (next != null && next.wasMergedIntoPrevious()) {
 698                    if (uuid.equals(next.getUuid())) {
 699                        return i;
 700                    }
 701                    next = next.next();
 702                }
 703            }
 704        }
 705        return -1;
 706    }
 707
 708    private ScrollState getScrollPosition() {
 709        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 710        if (listView == null
 711                || listView.getCount() == 0
 712                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 713            return null;
 714        } else {
 715            final int pos = listView.getFirstVisiblePosition();
 716            final View view = listView.getChildAt(0);
 717            if (view == null) {
 718                return null;
 719            } else {
 720                return new ScrollState(pos, view.getTop());
 721            }
 722        }
 723    }
 724
 725    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 726        if (scrollPosition != null) {
 727
 728            this.lastMessageUuid = lastMessageUuid;
 729            if (lastMessageUuid != null) {
 730                binding.unreadCountCustomView.setUnreadCount(
 731                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 732            }
 733            // TODO maybe this needs a 'post'
 734            this.binding.messagesView.setSelectionFromTop(
 735                    scrollPosition.position, scrollPosition.offset);
 736            toggleScrollDownButton();
 737        }
 738    }
 739
 740    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 741        if (conversation == null) {
 742            return;
 743        }
 744        activity.xmppConnectionService.attachLocationToConversation(
 745                conversation,
 746                uri,
 747                new UiCallback<Message>() {
 748
 749                    @Override
 750                    public void success(Message message) {}
 751
 752                    @Override
 753                    public void error(int errorCode, Message object) {
 754                        // TODO show possible pgp error
 755                    }
 756
 757                    @Override
 758                    public void userInputRequired(PendingIntent pi, Message object) {}
 759                });
 760    }
 761
 762    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 763        if (conversation == null) {
 764            return;
 765        }
 766        final Toast prepareFileToast =
 767                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 768        prepareFileToast.show();
 769        activity.delegateUriPermissionsToService(uri);
 770        activity.xmppConnectionService.attachFileToConversation(
 771                conversation,
 772                uri,
 773                type,
 774                new UiInformableCallback<Message>() {
 775                    @Override
 776                    public void inform(final String text) {
 777                        hidePrepareFileToast(prepareFileToast);
 778                        runOnUiThread(() -> activity.replaceToast(text));
 779                    }
 780
 781                    @Override
 782                    public void success(Message message) {
 783                        runOnUiThread(() -> activity.hideToast());
 784                        hidePrepareFileToast(prepareFileToast);
 785                    }
 786
 787                    @Override
 788                    public void error(final int errorCode, Message message) {
 789                        hidePrepareFileToast(prepareFileToast);
 790                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 791                    }
 792
 793                    @Override
 794                    public void userInputRequired(PendingIntent pi, Message message) {
 795                        hidePrepareFileToast(prepareFileToast);
 796                    }
 797                });
 798    }
 799
 800    public void attachEditorContentToConversation(Uri uri) {
 801        mediaPreviewAdapter.addMediaPreviews(
 802                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 803        toggleInputMethod();
 804    }
 805
 806    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 807        if (conversation == null) {
 808            return;
 809        }
 810        final Toast prepareFileToast =
 811                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 812        prepareFileToast.show();
 813        activity.delegateUriPermissionsToService(uri);
 814        activity.xmppConnectionService.attachImageToConversation(
 815                conversation,
 816                uri,
 817                type,
 818                new UiCallback<Message>() {
 819
 820                    @Override
 821                    public void userInputRequired(PendingIntent pi, Message object) {
 822                        hidePrepareFileToast(prepareFileToast);
 823                    }
 824
 825                    @Override
 826                    public void success(Message message) {
 827                        hidePrepareFileToast(prepareFileToast);
 828                    }
 829
 830                    @Override
 831                    public void error(final int error, final Message message) {
 832                        hidePrepareFileToast(prepareFileToast);
 833                        final ConversationsActivity activity = ConversationFragment.this.activity;
 834                        if (activity == null) {
 835                            return;
 836                        }
 837                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 838                    }
 839                });
 840    }
 841
 842    private void hidePrepareFileToast(final Toast prepareFileToast) {
 843        if (prepareFileToast != null && activity != null) {
 844            activity.runOnUiThread(prepareFileToast::cancel);
 845        }
 846    }
 847
 848    private void sendMessage() {
 849        if (mediaPreviewAdapter.hasAttachments()) {
 850            commitAttachments();
 851            return;
 852        }
 853        final Editable text = this.binding.textinput.getText();
 854        final String body = text == null ? "" : text.toString();
 855        final Conversation conversation = this.conversation;
 856        if (body.length() == 0 || conversation == null) {
 857            return;
 858        }
 859        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 860            return;
 861        }
 862        final Message message;
 863        if (conversation.getCorrectingMessage() == null) {
 864            message = new Message(conversation, body, conversation.getNextEncryption());
 865            Message.configurePrivateMessage(message);
 866        } else {
 867            message = conversation.getCorrectingMessage();
 868            message.setBody(body);
 869            message.putEdited(message.getUuid(), message.getServerMsgId());
 870            message.setServerMsgId(null);
 871            message.setUuid(UUID.randomUUID().toString());
 872        }
 873        switch (conversation.getNextEncryption()) {
 874            case Message.ENCRYPTION_PGP:
 875                sendPgpMessage(message);
 876                break;
 877            default:
 878                sendMessage(message);
 879        }
 880    }
 881
 882    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 883        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 884                && trustKeysIfNeeded(requestCode);
 885    }
 886
 887    protected boolean trustKeysIfNeeded(int requestCode) {
 888        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 889        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 890        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 891        boolean hasUndecidedOwn =
 892                !axolotlService
 893                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 894                        .isEmpty();
 895        boolean hasUndecidedContacts =
 896                !axolotlService
 897                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 898                        .isEmpty();
 899        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 900        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 901        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 902        if (hasUndecidedOwn
 903                || hasUndecidedContacts
 904                || hasPendingKeys
 905                || hasNoTrustedKeys
 906                || hasUnaccepted
 907                || downloadInProgress) {
 908            axolotlService.createSessionsIfNeeded(conversation);
 909            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 910            String[] contacts = new String[targets.size()];
 911            for (int i = 0; i < contacts.length; ++i) {
 912                contacts[i] = targets.get(i).toString();
 913            }
 914            intent.putExtra("contacts", contacts);
 915            intent.putExtra(
 916                    EXTRA_ACCOUNT,
 917                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 918            intent.putExtra("conversation", conversation.getUuid());
 919            startActivityForResult(intent, requestCode);
 920            return true;
 921        } else {
 922            return false;
 923        }
 924    }
 925
 926    public void updateChatMsgHint() {
 927        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 928        if (conversation.getCorrectingMessage() != null) {
 929            this.binding.textInputHint.setVisibility(View.GONE);
 930            this.binding.textinput.setHint(R.string.send_corrected_message);
 931        } else if (multi && conversation.getNextCounterpart() != null) {
 932            this.binding.textinput.setHint(R.string.send_unencrypted_message);
 933            this.binding.textInputHint.setVisibility(View.VISIBLE);
 934            this.binding.textInputHint.setText(
 935                    getString(
 936                            R.string.send_private_message_to,
 937                            conversation.getNextCounterpart().getResource()));
 938        } else if (multi && !conversation.getMucOptions().participating()) {
 939            this.binding.textInputHint.setVisibility(View.GONE);
 940            this.binding.textinput.setHint(R.string.you_are_not_participating);
 941        } else {
 942            this.binding.textInputHint.setVisibility(View.GONE);
 943            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 944            getActivity().invalidateOptionsMenu();
 945        }
 946    }
 947
 948    public void setupIme() {
 949        this.binding.textinput.refreshIme();
 950    }
 951
 952    private void handleActivityResult(ActivityResult activityResult) {
 953        if (activityResult.resultCode == Activity.RESULT_OK) {
 954            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 955        } else {
 956            handleNegativeActivityResult(activityResult.requestCode);
 957        }
 958    }
 959
 960    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 961        switch (requestCode) {
 962            case REQUEST_TRUST_KEYS_TEXT:
 963                sendMessage();
 964                break;
 965            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 966                commitAttachments();
 967                break;
 968            case REQUEST_START_AUDIO_CALL:
 969                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
 970                break;
 971            case REQUEST_START_VIDEO_CALL:
 972                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
 973                break;
 974            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 975                final List<Attachment> imageUris =
 976                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 977                mediaPreviewAdapter.addMediaPreviews(imageUris);
 978                toggleInputMethod();
 979                break;
 980            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 981                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 982                if (takePhotoUri != null) {
 983                    mediaPreviewAdapter.addMediaPreviews(
 984                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 985                    toggleInputMethod();
 986                } else {
 987                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 988                }
 989                break;
 990            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 991            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 992            case ATTACHMENT_CHOICE_RECORD_VOICE:
 993                final Attachment.Type type =
 994                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
 995                                ? Attachment.Type.RECORDING
 996                                : Attachment.Type.FILE;
 997                final List<Attachment> fileUris =
 998                        Attachment.extractAttachments(getActivity(), data, type);
 999                mediaPreviewAdapter.addMediaPreviews(fileUris);
1000                toggleInputMethod();
1001                break;
1002            case ATTACHMENT_CHOICE_LOCATION:
1003                final double latitude = data.getDoubleExtra("latitude", 0);
1004                final double longitude = data.getDoubleExtra("longitude", 0);
1005                final int accuracy = data.getIntExtra("accuracy", 0);
1006                final Uri geo;
1007                if (accuracy > 0) {
1008                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1009                } else {
1010                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1011                }
1012                mediaPreviewAdapter.addMediaPreviews(
1013                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1014                toggleInputMethod();
1015                break;
1016            case REQUEST_INVITE_TO_CONVERSATION:
1017                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1018                if (invite != null) {
1019                    if (invite.execute(activity)) {
1020                        activity.mToast =
1021                                Toast.makeText(
1022                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1023                        activity.mToast.show();
1024                    }
1025                }
1026                break;
1027        }
1028    }
1029
1030    private void commitAttachments() {
1031        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1032        if (anyNeedsExternalStoragePermission(attachments)
1033                && !hasPermissions(
1034                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1035            return;
1036        }
1037        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1038            return;
1039        }
1040        final PresenceSelector.OnPresenceSelected callback =
1041                () -> {
1042                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1043                        final Attachment attachment = i.next();
1044                        if (attachment.getType() == Attachment.Type.LOCATION) {
1045                            attachLocationToConversation(conversation, attachment.getUri());
1046                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1047                            Log.d(
1048                                    Config.LOGTAG,
1049                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1050                            attachImageToConversation(
1051                                    conversation, attachment.getUri(), attachment.getMime());
1052                        } else {
1053                            Log.d(
1054                                    Config.LOGTAG,
1055                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1056                            attachFileToConversation(
1057                                    conversation, attachment.getUri(), attachment.getMime());
1058                        }
1059                    }
1060                    mediaPreviewAdapter.notifyDataSetChanged();
1061                    toggleInputMethod();
1062                };
1063        if (conversation == null
1064                || conversation.getMode() == Conversation.MODE_MULTI
1065                || Attachment.canBeSendInBand(attachments)
1066                || (conversation.getAccount().httpUploadAvailable()
1067                        && FileBackend.allFilesUnderSize(
1068                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1069            callback.onPresenceSelected();
1070        } else {
1071            activity.selectPresence(conversation, callback);
1072        }
1073    }
1074
1075    private static boolean anyNeedsExternalStoragePermission(
1076            final Collection<Attachment> attachments) {
1077        for (final Attachment attachment : attachments) {
1078            if (attachment.getType() != Attachment.Type.LOCATION) {
1079                return true;
1080            }
1081        }
1082        return false;
1083    }
1084
1085    public void toggleInputMethod() {
1086        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1087        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1088        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1089        updateSendButton();
1090    }
1091
1092    private void handleNegativeActivityResult(int requestCode) {
1093        switch (requestCode) {
1094            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1095                if (pendingTakePhotoUri.clear()) {
1096                    Log.d(
1097                            Config.LOGTAG,
1098                            "cleared pending photo uri after negative activity result");
1099                }
1100                break;
1101        }
1102    }
1103
1104    @Override
1105    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1106        super.onActivityResult(requestCode, resultCode, data);
1107        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1108        if (activity != null && activity.xmppConnectionService != null) {
1109            handleActivityResult(activityResult);
1110        } else {
1111            this.postponedActivityResult.push(activityResult);
1112        }
1113    }
1114
1115    public void unblockConversation(final Blockable conversation) {
1116        activity.xmppConnectionService.sendUnblockRequest(conversation);
1117    }
1118
1119    @Override
1120    public void onAttach(Activity activity) {
1121        super.onAttach(activity);
1122        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1123        if (activity instanceof ConversationsActivity) {
1124            this.activity = (ConversationsActivity) activity;
1125        } else {
1126            throw new IllegalStateException(
1127                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1128        }
1129    }
1130
1131    @Override
1132    public void onDetach() {
1133        super.onDetach();
1134        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1135    }
1136
1137    @Override
1138    public void onCreate(Bundle savedInstanceState) {
1139        super.onCreate(savedInstanceState);
1140        setHasOptionsMenu(true);
1141    }
1142
1143    @Override
1144    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1145        menuInflater.inflate(R.menu.fragment_conversation, menu);
1146        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1147        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1148        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1149        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1150        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1151        final MenuItem menuCall = menu.findItem(R.id.action_call);
1152        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1153        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1154        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1155
1156        if (conversation != null) {
1157            if (conversation.getMode() == Conversation.MODE_MULTI) {
1158                menuContactDetails.setVisible(false);
1159                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1160                menuMucDetails.setTitle(
1161                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1162                                ? R.string.action_muc_details
1163                                : R.string.channel_details);
1164                menuCall.setVisible(false);
1165                menuOngoingCall.setVisible(false);
1166            } else {
1167                final XmppConnectionService service =
1168                        activity == null ? null : activity.xmppConnectionService;
1169                final Optional<OngoingRtpSession> ongoingRtpSession =
1170                        service == null
1171                                ? Optional.absent()
1172                                : service.getJingleConnectionManager()
1173                                        .getOngoingRtpConnection(conversation.getContact());
1174                if (ongoingRtpSession.isPresent()) {
1175                    menuOngoingCall.setVisible(true);
1176                    menuCall.setVisible(false);
1177                } else {
1178                    menuOngoingCall.setVisible(false);
1179                    final RtpCapability.Capability rtpCapability =
1180                            RtpCapability.check(conversation.getContact());
1181                    final boolean cameraAvailable =
1182                            activity != null && activity.isCameraFeatureAvailable();
1183                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1184                    menuVideoCall.setVisible(
1185                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1186                }
1187                menuContactDetails.setVisible(!this.conversation.withSelf());
1188                menuMucDetails.setVisible(false);
1189                menuInviteContact.setVisible(
1190                        service != null
1191                                && service.findConferenceServer(conversation.getAccount()) != null);
1192            }
1193            if (conversation.isMuted()) {
1194                menuMute.setVisible(false);
1195            } else {
1196                menuUnmute.setVisible(false);
1197            }
1198            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1199            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1200            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1201                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1202            } else {
1203                menuTogglePinned.setTitle(R.string.add_to_favorites);
1204            }
1205        }
1206        super.onCreateOptionsMenu(menu, menuInflater);
1207    }
1208
1209    @Override
1210    public View onCreateView(
1211            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1212        this.binding =
1213                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1214        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1215
1216        binding.textinput.addTextChangedListener(
1217                new StylingHelper.MessageEditorStyler(binding.textinput));
1218
1219        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1220        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1221
1222        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1223
1224        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1225        binding.messagesView.setOnScrollListener(mOnScrollListener);
1226        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1227        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1228        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1229        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1230        messageListAdapter.setOnContactPictureClicked(this);
1231        messageListAdapter.setOnContactPictureLongClicked(this);
1232        binding.messagesView.setAdapter(messageListAdapter);
1233
1234        registerForContextMenu(binding.messagesView);
1235
1236        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1237            this.binding.textinput.setCustomInsertionActionModeCallback(
1238                    new EditMessageActionModeCallback(this.binding.textinput));
1239        }
1240
1241        return binding.getRoot();
1242    }
1243
1244    @Override
1245    public void onDestroyView() {
1246        super.onDestroyView();
1247        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1248        messageListAdapter.setOnContactPictureClicked(null);
1249        messageListAdapter.setOnContactPictureLongClicked(null);
1250    }
1251
1252    private void quoteText(String text) {
1253        if (binding.textinput.isEnabled()) {
1254            binding.textinput.insertAsQuote(text);
1255            binding.textinput.requestFocus();
1256            InputMethodManager inputMethodManager =
1257                    (InputMethodManager)
1258                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1259            if (inputMethodManager != null) {
1260                inputMethodManager.showSoftInput(
1261                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1262            }
1263        }
1264    }
1265
1266    private void quoteMessage(Message message) {
1267        quoteText(MessageUtils.prepareQuote(message));
1268    }
1269
1270    @Override
1271    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1272        // This should cancel any remaining click events that would otherwise trigger links
1273        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1274        synchronized (this.messageList) {
1275            super.onCreateContextMenu(menu, v, menuInfo);
1276            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1277            this.selectedMessage = this.messageList.get(acmi.position);
1278            populateContextMenu(menu);
1279        }
1280    }
1281
1282    private void populateContextMenu(ContextMenu menu) {
1283        final Message m = this.selectedMessage;
1284        final Transferable t = m.getTransferable();
1285        Message relevantForCorrection = m;
1286        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1287            relevantForCorrection = relevantForCorrection.next();
1288        }
1289        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1290
1291            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1292                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1293                return;
1294            }
1295
1296            if (m.getStatus() == Message.STATUS_RECEIVED
1297                    && t != null
1298                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1299                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1300                return;
1301            }
1302
1303            final boolean deleted = m.isDeleted();
1304            final boolean encrypted =
1305                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1306                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1307            final boolean receiving =
1308                    m.getStatus() == Message.STATUS_RECEIVED
1309                            && (t instanceof JingleFileTransferConnection
1310                                    || t instanceof HttpDownloadConnection);
1311            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1312            menu.setHeaderTitle(R.string.message_options);
1313            final MenuItem addReaction = menu.findItem(R.id.action_add_reaction);
1314            final MenuItem reportAndBlock = menu.findItem(R.id.action_report_and_block);
1315            final MenuItem openWith = menu.findItem(R.id.open_with);
1316            final MenuItem copyMessage = menu.findItem(R.id.copy_message);
1317            final MenuItem copyLink = menu.findItem(R.id.copy_link);
1318            final MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1319            final MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1320            final MenuItem correctMessage = menu.findItem(R.id.correct_message);
1321            final MenuItem shareWith = menu.findItem(R.id.share_with);
1322            final MenuItem sendAgain = menu.findItem(R.id.send_again);
1323            final MenuItem copyUrl = menu.findItem(R.id.copy_url);
1324            final MenuItem downloadFile = menu.findItem(R.id.download_file);
1325            final MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1326            final MenuItem deleteFile = menu.findItem(R.id.delete_file);
1327            final MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1328            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1329            final boolean showError =
1330                    m.getStatus() == Message.STATUS_SEND_FAILED
1331                            && m.getErrorMessage() != null
1332                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1333            final Conversational conversational = m.getConversation();
1334            if (m.getStatus() == Message.STATUS_RECEIVED && conversational instanceof Conversation c) {
1335                final XmppConnection connection = c.getAccount().getXmppConnection();
1336                if (c.isWithStranger()
1337                        && m.getServerMsgId() != null
1338                        && !c.isBlocked()
1339                        && connection != null
1340                        && connection.getFeatures().spamReporting()) {
1341                    reportAndBlock.setVisible(true);
1342                }
1343            }
1344            if (conversational instanceof Conversation c) {
1345                addReaction.setVisible(
1346                        !showError
1347                                && !m.isDeleted()
1348                                && (c.getMode() == Conversational.MODE_SINGLE
1349                                        || (c.getMucOptions().occupantId()
1350                                                && c.getMucOptions().participating())));
1351            } else {
1352                addReaction.setVisible(false);
1353            }
1354            if (!m.isFileOrImage()
1355                    && !encrypted
1356                    && !m.isGeoUri()
1357                    && !m.treatAsDownloadable()
1358                    && !unInitiatedButKnownSize
1359                    && t == null) {
1360                copyMessage.setVisible(true);
1361                quoteMessage.setVisible(!showError && !MessageUtils.prepareQuote(m).isEmpty());
1362                final String scheme = ShareUtil.getLinkScheme(m.getMergedBody());
1363                if ("xmpp".equals(scheme)) {
1364                    copyLink.setTitle(R.string.copy_jabber_id);
1365                    copyLink.setVisible(true);
1366                } else if (scheme != null) {
1367                    copyLink.setVisible(true);
1368                }
1369            }
1370            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1371                retryDecryption.setVisible(true);
1372            }
1373            if (!showError
1374                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1375                    && !m.isGeoUri()
1376                    && relevantForCorrection.isLastCorrectableMessage()
1377                    && m.getConversation() instanceof Conversation) {
1378                correctMessage.setVisible(true);
1379            }
1380            if ((m.isFileOrImage() && !deleted && !receiving)
1381                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1382                            && !unInitiatedButKnownSize
1383                            && t == null) {
1384                shareWith.setVisible(true);
1385            }
1386            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1387                sendAgain.setVisible(true);
1388            }
1389            if (m.hasFileOnRemoteHost()
1390                    || m.isGeoUri()
1391                    || m.treatAsDownloadable()
1392                    || unInitiatedButKnownSize
1393                    || t instanceof HttpDownloadConnection) {
1394                copyUrl.setVisible(true);
1395            }
1396            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1397                downloadFile.setVisible(true);
1398                downloadFile.setTitle(
1399                        activity.getString(
1400                                R.string.download_x_file,
1401                                UIHelper.getFileDescriptionString(activity, m)));
1402            }
1403            final boolean waitingOfferedSending =
1404                    m.getStatus() == Message.STATUS_WAITING
1405                            || m.getStatus() == Message.STATUS_UNSEND
1406                            || m.getStatus() == Message.STATUS_OFFERED;
1407            final boolean cancelable =
1408                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1409            if (cancelable) {
1410                cancelTransmission.setVisible(true);
1411            }
1412            if (m.isFileOrImage() && !deleted && !cancelable) {
1413                final String path = m.getRelativeFilePath();
1414                if (path == null
1415                        || !path.startsWith("/")
1416                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1417                    deleteFile.setVisible(true);
1418                    deleteFile.setTitle(
1419                            activity.getString(
1420                                    R.string.delete_x_file,
1421                                    UIHelper.getFileDescriptionString(activity, m)));
1422                }
1423            }
1424            if (showError) {
1425                showErrorMessage.setVisible(true);
1426            }
1427            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1428            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1429                    || (mime != null && mime.startsWith("audio/"))) {
1430                openWith.setVisible(true);
1431            }
1432        }
1433    }
1434
1435    @Override
1436    public boolean onContextItemSelected(MenuItem item) {
1437        switch (item.getItemId()) {
1438            case R.id.share_with:
1439                ShareUtil.share(activity, selectedMessage);
1440                return true;
1441            case R.id.correct_message:
1442                correctMessage(selectedMessage);
1443                return true;
1444            case R.id.copy_message:
1445                ShareUtil.copyToClipboard(activity, selectedMessage);
1446                return true;
1447            case R.id.copy_link:
1448                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1449                return true;
1450            case R.id.quote_message:
1451                quoteMessage(selectedMessage);
1452                return true;
1453            case R.id.send_again:
1454                resendMessage(selectedMessage);
1455                return true;
1456            case R.id.copy_url:
1457                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1458                return true;
1459            case R.id.download_file:
1460                startDownloadable(selectedMessage);
1461                return true;
1462            case R.id.cancel_transmission:
1463                cancelTransmission(selectedMessage);
1464                return true;
1465            case R.id.retry_decryption:
1466                retryDecryption(selectedMessage);
1467                return true;
1468            case R.id.delete_file:
1469                deleteFile(selectedMessage);
1470                return true;
1471            case R.id.show_error_message:
1472                showErrorMessage(selectedMessage);
1473                return true;
1474            case R.id.open_with:
1475                openWith(selectedMessage);
1476                return true;
1477            case R.id.action_report_and_block:
1478                reportMessage(selectedMessage);
1479                return true;
1480            case R.id.action_add_reaction:
1481                addReaction(selectedMessage);
1482                return true;
1483            default:
1484                return super.onContextItemSelected(item);
1485        }
1486    }
1487
1488    @Override
1489    public boolean onOptionsItemSelected(final MenuItem item) {
1490        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1491            return false;
1492        } else if (conversation == null) {
1493            return super.onOptionsItemSelected(item);
1494        }
1495        switch (item.getItemId()) {
1496            case R.id.encryption_choice_axolotl:
1497            case R.id.encryption_choice_pgp:
1498            case R.id.encryption_choice_none:
1499                handleEncryptionSelection(item);
1500                break;
1501            case R.id.attach_choose_picture:
1502            case R.id.attach_take_picture:
1503            case R.id.attach_record_video:
1504            case R.id.attach_choose_file:
1505            case R.id.attach_record_voice:
1506            case R.id.attach_location:
1507                handleAttachmentSelection(item);
1508                break;
1509            case R.id.action_search:
1510                startSearch();
1511                break;
1512            case R.id.action_archive:
1513                activity.xmppConnectionService.archiveConversation(conversation);
1514                break;
1515            case R.id.action_contact_details:
1516                activity.switchToContactDetails(conversation.getContact());
1517                break;
1518            case R.id.action_muc_details:
1519                ConferenceDetailsActivity.open(getActivity(), conversation);
1520                break;
1521            case R.id.action_invite:
1522                startActivityForResult(
1523                        ChooseContactActivity.create(activity, conversation),
1524                        REQUEST_INVITE_TO_CONVERSATION);
1525                break;
1526            case R.id.action_clear_history:
1527                clearHistoryDialog(conversation);
1528                break;
1529            case R.id.action_mute:
1530                muteConversationDialog(conversation);
1531                break;
1532            case R.id.action_unmute:
1533                unMuteConversation(conversation);
1534                break;
1535            case R.id.action_block:
1536            case R.id.action_unblock:
1537                final Activity activity = getActivity();
1538                if (activity instanceof XmppActivity) {
1539                    BlockContactDialog.show((XmppActivity) activity, conversation);
1540                }
1541                break;
1542            case R.id.action_audio_call:
1543                checkPermissionAndTriggerAudioCall();
1544                break;
1545            case R.id.action_video_call:
1546                checkPermissionAndTriggerVideoCall();
1547                break;
1548            case R.id.action_ongoing_call:
1549                returnToOngoingCall();
1550                break;
1551            case R.id.action_toggle_pinned:
1552                togglePinned();
1553                break;
1554            default:
1555                break;
1556        }
1557        return super.onOptionsItemSelected(item);
1558    }
1559
1560    private void startSearch() {
1561        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1562        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1563        startActivity(intent);
1564    }
1565
1566    private void returnToOngoingCall() {
1567        final Optional<OngoingRtpSession> ongoingRtpSession =
1568                activity.xmppConnectionService
1569                        .getJingleConnectionManager()
1570                        .getOngoingRtpConnection(conversation.getContact());
1571        if (ongoingRtpSession.isPresent()) {
1572            final OngoingRtpSession id = ongoingRtpSession.get();
1573            final Intent intent = new Intent(getActivity(), RtpSessionActivity.class);
1574            intent.setAction(Intent.ACTION_VIEW);
1575            intent.putExtra(
1576                    RtpSessionActivity.EXTRA_ACCOUNT,
1577                    id.getAccount().getJid().asBareJid().toEscapedString());
1578            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1579            if (id instanceof AbstractJingleConnection) {
1580                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1581                startActivity(intent);
1582            } else if (id instanceof JingleConnectionManager.RtpSessionProposal proposal) {
1583                if (Media.audioOnly(proposal.media)) {
1584                    intent.putExtra(
1585                            RtpSessionActivity.EXTRA_LAST_ACTION,
1586                            RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1587                } else {
1588                    intent.putExtra(
1589                            RtpSessionActivity.EXTRA_LAST_ACTION,
1590                            RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1591                }
1592                intent.putExtra(RtpSessionActivity.EXTRA_PROPOSED_SESSION_ID, proposal.sessionId);
1593                startActivity(intent);
1594            }
1595        }
1596    }
1597
1598    private void togglePinned() {
1599        final boolean pinned =
1600                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1601        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1602        activity.xmppConnectionService.updateConversation(conversation);
1603        activity.invalidateOptionsMenu();
1604    }
1605
1606    private void checkPermissionAndTriggerAudioCall() {
1607        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1608            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1609            return;
1610        }
1611        final List<String> permissions;
1612        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1613            permissions =
1614                    Arrays.asList(
1615                            Manifest.permission.RECORD_AUDIO,
1616                            Manifest.permission.BLUETOOTH_CONNECT);
1617        } else {
1618            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1619        }
1620        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1621            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1622        }
1623    }
1624
1625    private void checkPermissionAndTriggerVideoCall() {
1626        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1627            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1628            return;
1629        }
1630        final List<String> permissions;
1631        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1632            permissions =
1633                    Arrays.asList(
1634                            Manifest.permission.RECORD_AUDIO,
1635                            Manifest.permission.CAMERA,
1636                            Manifest.permission.BLUETOOTH_CONNECT);
1637        } else {
1638            permissions =
1639                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1640        }
1641        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1642            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1643        }
1644    }
1645
1646    private void triggerRtpSession(final String action) {
1647        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy()) {
1648            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1649                    .show();
1650            return;
1651        }
1652        final Account account = conversation.getAccount();
1653        if (account.setOption(Account.OPTION_SOFT_DISABLED, false)) {
1654            activity.xmppConnectionService.updateAccount(account);
1655        }
1656        final Contact contact = conversation.getContact();
1657        if (Config.USE_JINGLE_MESSAGE_INIT && RtpCapability.jmiSupport(contact)) {
1658            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1659        } else {
1660            final RtpCapability.Capability capability;
1661            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1662                capability = RtpCapability.Capability.VIDEO;
1663            } else {
1664                capability = RtpCapability.Capability.AUDIO;
1665            }
1666            PresenceSelector.selectFullJidForDirectRtpConnection(
1667                    activity,
1668                    contact,
1669                    capability,
1670                    fullJid -> {
1671                        triggerRtpSession(contact.getAccount(), fullJid, action);
1672                    });
1673        }
1674    }
1675
1676    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1677        CallIntegrationConnectionService.placeCall(activity.xmppConnectionService, account,with,RtpSessionActivity.actionToMedia(action));
1678    }
1679
1680    private void handleAttachmentSelection(MenuItem item) {
1681        switch (item.getItemId()) {
1682            case R.id.attach_choose_picture:
1683                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1684                break;
1685            case R.id.attach_take_picture:
1686                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1687                break;
1688            case R.id.attach_record_video:
1689                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1690                break;
1691            case R.id.attach_choose_file:
1692                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1693                break;
1694            case R.id.attach_record_voice:
1695                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1696                break;
1697            case R.id.attach_location:
1698                attachFile(ATTACHMENT_CHOICE_LOCATION);
1699                break;
1700        }
1701    }
1702
1703    private void handleEncryptionSelection(MenuItem item) {
1704        if (conversation == null) {
1705            return;
1706        }
1707        final boolean updated;
1708        switch (item.getItemId()) {
1709            case R.id.encryption_choice_none:
1710                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1711                item.setChecked(true);
1712                break;
1713            case R.id.encryption_choice_pgp:
1714                if (activity.hasPgp()) {
1715                    if (conversation.getAccount().getPgpSignature() != null) {
1716                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1717                        item.setChecked(true);
1718                    } else {
1719                        updated = false;
1720                        activity.announcePgp(
1721                                conversation.getAccount(),
1722                                conversation,
1723                                null,
1724                                activity.onOpenPGPKeyPublished);
1725                    }
1726                } else {
1727                    activity.showInstallPgpDialog();
1728                    updated = false;
1729                }
1730                break;
1731            case R.id.encryption_choice_axolotl:
1732                Log.d(
1733                        Config.LOGTAG,
1734                        AxolotlService.getLogprefix(conversation.getAccount())
1735                                + "Enabled axolotl for Contact "
1736                                + conversation.getContact().getJid());
1737                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1738                item.setChecked(true);
1739                break;
1740            default:
1741                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1742                break;
1743        }
1744        if (updated) {
1745            activity.xmppConnectionService.updateConversation(conversation);
1746        }
1747        updateChatMsgHint();
1748        getActivity().invalidateOptionsMenu();
1749        activity.refreshUi();
1750    }
1751
1752    public void attachFile(final int attachmentChoice) {
1753        attachFile(attachmentChoice, true);
1754    }
1755
1756    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1757        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1758            if (!hasPermissions(
1759                    attachmentChoice,
1760                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1761                    Manifest.permission.RECORD_AUDIO)) {
1762                return;
1763            }
1764        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1765                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1766            if (!hasPermissions(
1767                    attachmentChoice,
1768                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1769                    Manifest.permission.CAMERA)) {
1770                return;
1771            }
1772        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1773            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1774                return;
1775            }
1776        }
1777        if (updateRecentlyUsed) {
1778            storeRecentlyUsedQuickAction(attachmentChoice);
1779        }
1780        final int encryption = conversation.getNextEncryption();
1781        final int mode = conversation.getMode();
1782        if (encryption == Message.ENCRYPTION_PGP) {
1783            if (activity.hasPgp()) {
1784                if (mode == Conversation.MODE_SINGLE
1785                        && conversation.getContact().getPgpKeyId() != 0) {
1786                    activity.xmppConnectionService
1787                            .getPgpEngine()
1788                            .hasKey(
1789                                    conversation.getContact(),
1790                                    new UiCallback<Contact>() {
1791
1792                                        @Override
1793                                        public void userInputRequired(
1794                                                PendingIntent pi, Contact contact) {
1795                                            startPendingIntent(pi, attachmentChoice);
1796                                        }
1797
1798                                        @Override
1799                                        public void success(Contact contact) {
1800                                            invokeAttachFileIntent(attachmentChoice);
1801                                        }
1802
1803                                        @Override
1804                                        public void error(int error, Contact contact) {
1805                                            activity.replaceToast(getString(error));
1806                                        }
1807                                    });
1808                } else if (mode == Conversation.MODE_MULTI
1809                        && conversation.getMucOptions().pgpKeysInUse()) {
1810                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1811                        Toast warning =
1812                                Toast.makeText(
1813                                        getActivity(),
1814                                        R.string.missing_public_keys,
1815                                        Toast.LENGTH_LONG);
1816                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1817                        warning.show();
1818                    }
1819                    invokeAttachFileIntent(attachmentChoice);
1820                } else {
1821                    showNoPGPKeyDialog(
1822                            false,
1823                            (dialog, which) -> {
1824                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1825                                activity.xmppConnectionService.updateConversation(conversation);
1826                                invokeAttachFileIntent(attachmentChoice);
1827                            });
1828                }
1829            } else {
1830                activity.showInstallPgpDialog();
1831            }
1832        } else {
1833            invokeAttachFileIntent(attachmentChoice);
1834        }
1835    }
1836
1837    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1838        try {
1839            activity.getPreferences()
1840                    .edit()
1841                    .putString(
1842                            RECENTLY_USED_QUICK_ACTION,
1843                            SendButtonAction.of(attachmentChoice).toString())
1844                    .apply();
1845        } catch (IllegalArgumentException e) {
1846            // just do not save
1847        }
1848    }
1849
1850    @Override
1851    public void onRequestPermissionsResult(
1852            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1853        final PermissionUtils.PermissionResult permissionResult =
1854                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1855        if (grantResults.length > 0) {
1856            if (allGranted(permissionResult.grantResults)) {
1857                switch (requestCode) {
1858                    case REQUEST_START_DOWNLOAD:
1859                        if (this.mPendingDownloadableMessage != null) {
1860                            startDownloadable(this.mPendingDownloadableMessage);
1861                        }
1862                        break;
1863                    case REQUEST_ADD_EDITOR_CONTENT:
1864                        if (this.mPendingEditorContent != null) {
1865                            attachEditorContentToConversation(this.mPendingEditorContent);
1866                        }
1867                        break;
1868                    case REQUEST_COMMIT_ATTACHMENTS:
1869                        commitAttachments();
1870                        break;
1871                    case REQUEST_START_AUDIO_CALL:
1872                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1873                        break;
1874                    case REQUEST_START_VIDEO_CALL:
1875                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1876                        break;
1877                    default:
1878                        attachFile(requestCode);
1879                        break;
1880                }
1881            } else {
1882                @StringRes int res;
1883                String firstDenied =
1884                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
1885                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1886                    res = R.string.no_microphone_permission;
1887                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1888                    res = R.string.no_camera_permission;
1889                } else {
1890                    res = R.string.no_storage_permission;
1891                }
1892                Toast.makeText(
1893                                getActivity(),
1894                                getString(res, getString(R.string.app_name)),
1895                                Toast.LENGTH_SHORT)
1896                        .show();
1897            }
1898        }
1899        if (writeGranted(grantResults, permissions)) {
1900            if (activity != null && activity.xmppConnectionService != null) {
1901                activity.xmppConnectionService.getBitmapCache().evictAll();
1902                activity.xmppConnectionService.restartFileObserver();
1903            }
1904            refresh();
1905        }
1906        if (cameraGranted(grantResults, permissions) || audioGranted(grantResults, permissions)) {
1907            XmppConnectionService.toggleForegroundService(activity);
1908        }
1909    }
1910
1911    public void startDownloadable(Message message) {
1912        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1913            this.mPendingDownloadableMessage = message;
1914            return;
1915        }
1916        Transferable transferable = message.getTransferable();
1917        if (transferable != null) {
1918            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1919                createNewConnection(message);
1920                return;
1921            }
1922            if (!transferable.start()) {
1923                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1924                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1925                        .show();
1926            }
1927        } else if (message.treatAsDownloadable()
1928                || message.hasFileOnRemoteHost()
1929                || MessageUtils.unInitiatedButKnownSize(message)) {
1930            createNewConnection(message);
1931        } else {
1932            Log.d(
1933                    Config.LOGTAG,
1934                    message.getConversation().getAccount() + ": unable to start downloadable");
1935        }
1936    }
1937
1938    private void createNewConnection(final Message message) {
1939        if (!activity.xmppConnectionService.hasInternetConnection()) {
1940            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1941                    .show();
1942            return;
1943        }
1944        activity.xmppConnectionService
1945                .getHttpConnectionManager()
1946                .createNewDownloadConnection(message, true);
1947    }
1948
1949    @SuppressLint("InflateParams")
1950    protected void clearHistoryDialog(final Conversation conversation) {
1951        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
1952        builder.setTitle(R.string.clear_conversation_history);
1953        final View dialogView =
1954                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1955        final CheckBox endConversationCheckBox =
1956                dialogView.findViewById(R.id.end_conversation_checkbox);
1957        builder.setView(dialogView);
1958        builder.setNegativeButton(getString(R.string.cancel), null);
1959        builder.setPositiveButton(
1960                getString(R.string.confirm),
1961                (dialog, which) -> {
1962                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
1963                    if (endConversationCheckBox.isChecked()) {
1964                        this.activity.xmppConnectionService.archiveConversation(conversation);
1965                        this.activity.onConversationArchived(conversation);
1966                    } else {
1967                        activity.onConversationsListItemUpdated();
1968                        refresh();
1969                    }
1970                });
1971        builder.create().show();
1972    }
1973
1974    protected void muteConversationDialog(final Conversation conversation) {
1975        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
1976        builder.setTitle(R.string.disable_notifications);
1977        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1978        final CharSequence[] labels = new CharSequence[durations.length];
1979        for (int i = 0; i < durations.length; ++i) {
1980            if (durations[i] == -1) {
1981                labels[i] = getString(R.string.until_further_notice);
1982            } else {
1983                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
1984            }
1985        }
1986        builder.setItems(
1987                labels,
1988                (dialog, which) -> {
1989                    final long till;
1990                    if (durations[which] == -1) {
1991                        till = Long.MAX_VALUE;
1992                    } else {
1993                        till = System.currentTimeMillis() + (durations[which] * 1000L);
1994                    }
1995                    conversation.setMutedTill(till);
1996                    activity.xmppConnectionService.updateConversation(conversation);
1997                    activity.onConversationsListItemUpdated();
1998                    refresh();
1999                    requireActivity().invalidateOptionsMenu();
2000                });
2001        builder.create().show();
2002    }
2003
2004    private boolean hasPermissions(int requestCode, List<String> permissions) {
2005        final List<String> missingPermissions = new ArrayList<>();
2006        for (String permission : permissions) {
2007            if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU || Config.ONLY_INTERNAL_STORAGE) && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2008                continue;
2009            }
2010            if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2011                missingPermissions.add(permission);
2012            }
2013        }
2014        if (missingPermissions.size() == 0) {
2015            return true;
2016        } else {
2017            requestPermissions(
2018                    missingPermissions.toArray(new String[0]),
2019                    requestCode);
2020            return false;
2021        }
2022    }
2023
2024    private boolean hasPermissions(int requestCode, String... permissions) {
2025        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2026    }
2027
2028    public void unMuteConversation(final Conversation conversation) {
2029        conversation.setMutedTill(0);
2030        this.activity.xmppConnectionService.updateConversation(conversation);
2031        this.activity.onConversationsListItemUpdated();
2032        refresh();
2033        requireActivity().invalidateOptionsMenu();
2034    }
2035
2036    protected void invokeAttachFileIntent(final int attachmentChoice) {
2037        Intent intent = new Intent();
2038        boolean chooser = false;
2039        switch (attachmentChoice) {
2040            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2041                intent.setAction(Intent.ACTION_GET_CONTENT);
2042                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2043                intent.setType("image/*");
2044                chooser = true;
2045                break;
2046            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2047                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2048                break;
2049            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2050                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2051                pendingTakePhotoUri.push(uri);
2052                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2053                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2054                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2055                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2056                break;
2057            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2058                chooser = true;
2059                intent.setType("*/*");
2060                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2061                intent.addCategory(Intent.CATEGORY_OPENABLE);
2062                intent.setAction(Intent.ACTION_GET_CONTENT);
2063                break;
2064            case ATTACHMENT_CHOICE_RECORD_VOICE:
2065                intent = new Intent(getActivity(), RecordingActivity.class);
2066                break;
2067            case ATTACHMENT_CHOICE_LOCATION:
2068                intent = GeoHelper.getFetchIntent(activity);
2069                break;
2070        }
2071        final Context context = getActivity();
2072        if (context == null) {
2073            return;
2074        }
2075        try {
2076            if (chooser) {
2077                startActivityForResult(
2078                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2079                        attachmentChoice);
2080            } else {
2081                startActivityForResult(intent, attachmentChoice);
2082            }
2083        } catch (final ActivityNotFoundException e) {
2084            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2085        }
2086    }
2087
2088    @Override
2089    public void onResume() {
2090        super.onResume();
2091        binding.messagesView.post(this::fireReadEvent);
2092    }
2093
2094    private void fireReadEvent() {
2095        if (activity != null && this.conversation != null) {
2096            String uuid = getLastVisibleMessageUuid();
2097            if (uuid != null) {
2098                activity.onConversationRead(this.conversation, uuid);
2099            }
2100        }
2101    }
2102
2103    private String getLastVisibleMessageUuid() {
2104        if (binding == null) {
2105            return null;
2106        }
2107        synchronized (this.messageList) {
2108            int pos = binding.messagesView.getLastVisiblePosition();
2109            if (pos >= 0) {
2110                Message message = null;
2111                for (int i = pos; i >= 0; --i) {
2112                    try {
2113                        message = (Message) binding.messagesView.getItemAtPosition(i);
2114                    } catch (IndexOutOfBoundsException e) {
2115                        // should not happen if we synchronize properly. however if that fails we
2116                        // just gonna try item -1
2117                        continue;
2118                    }
2119                    if (message.getType() != Message.TYPE_STATUS) {
2120                        break;
2121                    }
2122                }
2123                if (message != null) {
2124                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2125                        message = message.next();
2126                    }
2127                    return message.getUuid();
2128                }
2129            }
2130        }
2131        return null;
2132    }
2133
2134    private void openWith(final Message message) {
2135        if (message.isGeoUri()) {
2136            GeoHelper.view(getActivity(), message);
2137        } else {
2138            final DownloadableFile file =
2139                    activity.xmppConnectionService.getFileBackend().getFile(message);
2140            ViewUtil.view(activity, file);
2141        }
2142    }
2143
2144    private void addReaction(final Message message) {
2145        activity.addReaction(message, reactions -> activity.xmppConnectionService.sendReactions(message, reactions));
2146    }
2147
2148    private void reportMessage(final Message message) {
2149        BlockContactDialog.show(activity, conversation.getContact(), message.getServerMsgId());
2150    }
2151
2152    private void showErrorMessage(final Message message) {
2153        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
2154        builder.setTitle(R.string.error_message);
2155        final String errorMessage = message.getErrorMessage();
2156        final String[] errorMessageParts =
2157                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2158        final String displayError;
2159        if (errorMessageParts.length == 2) {
2160            displayError = errorMessageParts[1];
2161        } else {
2162            displayError = errorMessage;
2163        }
2164        builder.setMessage(displayError);
2165        builder.setNegativeButton(
2166                R.string.copy_to_clipboard,
2167                (dialog, which) -> {
2168                    activity.copyTextToClipboard(displayError, R.string.error_message);
2169                    Toast.makeText(
2170                                    activity,
2171                                    R.string.error_message_copied_to_clipboard,
2172                                    Toast.LENGTH_SHORT)
2173                            .show();
2174                });
2175        builder.setPositiveButton(R.string.confirm, null);
2176        builder.create().show();
2177    }
2178
2179    private void deleteFile(final Message message) {
2180        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
2181        builder.setNegativeButton(R.string.cancel, null);
2182        builder.setTitle(R.string.delete_file_dialog);
2183        builder.setMessage(R.string.delete_file_dialog_msg);
2184        builder.setPositiveButton(
2185                R.string.confirm,
2186                (dialog, which) -> {
2187                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2188                        message.setDeleted(true);
2189                        activity.xmppConnectionService.evictPreview(message.getUuid());
2190                        activity.xmppConnectionService.updateMessage(message, false);
2191                        activity.onConversationsListItemUpdated();
2192                        refresh();
2193                    }
2194                });
2195        builder.create().show();
2196    }
2197
2198    private void resendMessage(final Message message) {
2199        if (message.isFileOrImage()) {
2200            if (!(message.getConversation() instanceof Conversation)) {
2201                return;
2202            }
2203            final Conversation conversation = (Conversation) message.getConversation();
2204            final DownloadableFile file =
2205                    activity.xmppConnectionService.getFileBackend().getFile(message);
2206            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2207                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2208                if (!message.hasFileOnRemoteHost()
2209                        && xmppConnection != null
2210                        && conversation.getMode() == Conversational.MODE_SINGLE
2211                        && !xmppConnection
2212                                .getFeatures()
2213                                .httpUpload(message.getFileParams().getSize())) {
2214                    activity.selectPresence(
2215                            conversation,
2216                            () -> {
2217                                message.setCounterpart(conversation.getNextCounterpart());
2218                                activity.xmppConnectionService.resendFailedMessages(message);
2219                                new Handler()
2220                                        .post(
2221                                                () -> {
2222                                                    int size = messageList.size();
2223                                                    this.binding.messagesView.setSelection(
2224                                                            size - 1);
2225                                                });
2226                            });
2227                    return;
2228                }
2229            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2230                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2231                return;
2232            } else {
2233                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2234                message.setDeleted(true);
2235                activity.xmppConnectionService.updateMessage(message, false);
2236                activity.onConversationsListItemUpdated();
2237                refresh();
2238                return;
2239            }
2240        }
2241        activity.xmppConnectionService.resendFailedMessages(message);
2242        new Handler()
2243                .post(
2244                        () -> {
2245                            int size = messageList.size();
2246                            this.binding.messagesView.setSelection(size - 1);
2247                        });
2248    }
2249
2250    private void cancelTransmission(Message message) {
2251        Transferable transferable = message.getTransferable();
2252        if (transferable != null) {
2253            transferable.cancel();
2254        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2255            activity.xmppConnectionService.markMessage(
2256                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2257        }
2258    }
2259
2260    private void retryDecryption(Message message) {
2261        message.setEncryption(Message.ENCRYPTION_PGP);
2262        activity.onConversationsListItemUpdated();
2263        refresh();
2264        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2265    }
2266
2267    public void privateMessageWith(final Jid counterpart) {
2268        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2269            activity.xmppConnectionService.sendChatState(conversation);
2270        }
2271        this.binding.textinput.setText("");
2272        this.conversation.setNextCounterpart(counterpart);
2273        updateChatMsgHint();
2274        updateSendButton();
2275        updateEditablity();
2276    }
2277
2278    private void correctMessage(Message message) {
2279        while (message.mergeable(message.next())) {
2280            message = message.next();
2281        }
2282        this.conversation.setCorrectingMessage(message);
2283        final Editable editable = binding.textinput.getText();
2284        this.conversation.setDraftMessage(editable.toString());
2285        this.binding.textinput.setText("");
2286        this.binding.textinput.append(message.getBody());
2287    }
2288
2289    private void highlightInConference(String nick) {
2290        final Editable editable = this.binding.textinput.getText();
2291        String oldString = editable.toString().trim();
2292        final int pos = this.binding.textinput.getSelectionStart();
2293        if (oldString.isEmpty() || pos == 0) {
2294            editable.insert(0, nick + ": ");
2295        } else {
2296            final char before = editable.charAt(pos - 1);
2297            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2298            if (before == '\n') {
2299                editable.insert(pos, nick + ": ");
2300            } else {
2301                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2302                    if (NickValidityChecker.check(
2303                            conversation,
2304                            Arrays.asList(
2305                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2306                        editable.insert(pos - 2, ", " + nick);
2307                        return;
2308                    }
2309                }
2310                editable.insert(
2311                        pos,
2312                        (Character.isWhitespace(before) ? "" : " ")
2313                                + nick
2314                                + (Character.isWhitespace(after) ? "" : " "));
2315                if (Character.isWhitespace(after)) {
2316                    this.binding.textinput.setSelection(
2317                            this.binding.textinput.getSelectionStart() + 1);
2318                }
2319            }
2320        }
2321    }
2322
2323    @Override
2324    public void startActivityForResult(Intent intent, int requestCode) {
2325        final Activity activity = getActivity();
2326        if (activity instanceof ConversationsActivity) {
2327            ((ConversationsActivity) activity).clearPendingViewIntent();
2328        }
2329        super.startActivityForResult(intent, requestCode);
2330    }
2331
2332    @Override
2333    public void onSaveInstanceState(@NonNull Bundle outState) {
2334        super.onSaveInstanceState(outState);
2335        if (conversation != null) {
2336            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2337            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2338            final Uri uri = pendingTakePhotoUri.peek();
2339            if (uri != null) {
2340                outState.putString(STATE_PHOTO_URI, uri.toString());
2341            }
2342            final ScrollState scrollState = getScrollPosition();
2343            if (scrollState != null) {
2344                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2345            }
2346            final ArrayList<Attachment> attachments =
2347                    mediaPreviewAdapter == null
2348                            ? new ArrayList<>()
2349                            : mediaPreviewAdapter.getAttachments();
2350            if (attachments.size() > 0) {
2351                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2352            }
2353        }
2354    }
2355
2356    @Override
2357    public void onActivityCreated(Bundle savedInstanceState) {
2358        super.onActivityCreated(savedInstanceState);
2359        if (savedInstanceState == null) {
2360            return;
2361        }
2362        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2363        ArrayList<Attachment> attachments =
2364                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2365        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2366        if (uuid != null) {
2367            QuickLoader.set(uuid);
2368            this.pendingConversationsUuid.push(uuid);
2369            if (attachments != null && attachments.size() > 0) {
2370                this.pendingMediaPreviews.push(attachments);
2371            }
2372            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2373            if (takePhotoUri != null) {
2374                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2375            }
2376            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2377        }
2378    }
2379
2380    @Override
2381    public void onStart() {
2382        super.onStart();
2383        if (this.reInitRequiredOnStart && this.conversation != null) {
2384            final Bundle extras = pendingExtras.pop();
2385            reInit(this.conversation, extras != null);
2386            if (extras != null) {
2387                processExtras(extras);
2388            }
2389        } else if (conversation == null
2390                && activity != null
2391                && activity.xmppConnectionService != null) {
2392            final String uuid = pendingConversationsUuid.pop();
2393            Log.d(
2394                    Config.LOGTAG,
2395                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2396                            + uuid);
2397            if (uuid != null) {
2398                findAndReInitByUuidOrArchive(uuid);
2399            }
2400        }
2401    }
2402
2403    @Override
2404    public void onStop() {
2405        super.onStop();
2406        final Activity activity = getActivity();
2407        messageListAdapter.unregisterListenerInAudioPlayer();
2408        if (activity == null || !activity.isChangingConfigurations()) {
2409            hideSoftKeyboard(activity);
2410            messageListAdapter.stopAudioPlayer();
2411        }
2412        if (this.conversation != null) {
2413            final String msg = this.binding.textinput.getText().toString();
2414            storeNextMessage(msg);
2415            updateChatState(this.conversation, msg);
2416            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2417        }
2418        this.reInitRequiredOnStart = true;
2419    }
2420
2421    private void updateChatState(final Conversation conversation, final String msg) {
2422        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2423        Account.State status = conversation.getAccount().getStatus();
2424        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2425            activity.xmppConnectionService.sendChatState(conversation);
2426        }
2427    }
2428
2429    private void saveMessageDraftStopAudioPlayer() {
2430        final Conversation previousConversation = this.conversation;
2431        if (this.activity == null || this.binding == null || previousConversation == null) {
2432            return;
2433        }
2434        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2435        final String msg = this.binding.textinput.getText().toString();
2436        storeNextMessage(msg);
2437        updateChatState(this.conversation, msg);
2438        messageListAdapter.stopAudioPlayer();
2439        mediaPreviewAdapter.clearPreviews();
2440        toggleInputMethod();
2441    }
2442
2443    public void reInit(final Conversation conversation, final Bundle extras) {
2444        QuickLoader.set(conversation.getUuid());
2445        final boolean changedConversation = this.conversation != conversation;
2446        if (changedConversation) {
2447            this.saveMessageDraftStopAudioPlayer();
2448        }
2449        this.clearPending();
2450        if (this.reInit(conversation, extras != null)) {
2451            if (extras != null) {
2452                processExtras(extras);
2453            }
2454            this.reInitRequiredOnStart = false;
2455        } else {
2456            this.reInitRequiredOnStart = true;
2457            pendingExtras.push(extras);
2458        }
2459        resetUnreadMessagesCount();
2460    }
2461
2462    private void reInit(Conversation conversation) {
2463        reInit(conversation, false);
2464    }
2465
2466    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2467        if (conversation == null) {
2468            return false;
2469        }
2470        this.conversation = conversation;
2471        // once we set the conversation all is good and it will automatically do the right thing in
2472        // onStart()
2473        if (this.activity == null || this.binding == null) {
2474            return false;
2475        }
2476
2477        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2478            activity.onConversationArchived(this.conversation);
2479            return false;
2480        }
2481
2482        stopScrolling();
2483        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2484
2485        if (this.conversation.isRead() && hasExtras) {
2486            Log.d(Config.LOGTAG, "trimming conversation");
2487            this.conversation.trim();
2488        }
2489
2490        setupIme();
2491
2492        final boolean scrolledToBottomAndNoPending =
2493                this.scrolledToBottom() && pendingScrollState.peek() == null;
2494
2495        this.binding.textSendButton.setContentDescription(
2496                activity.getString(R.string.send_message_to_x, conversation.getName()));
2497        this.binding.textinput.setKeyboardListener(null);
2498        final boolean participating =
2499                conversation.getMode() == Conversational.MODE_SINGLE
2500                        || conversation.getMucOptions().participating();
2501        if (participating) {
2502            this.binding.textinput.setText(this.conversation.getNextMessage());
2503            this.binding.textinput.setSelection(this.binding.textinput.length());
2504        } else {
2505            this.binding.textinput.setText(MessageUtils.EMPTY_STRING);
2506        }
2507        this.binding.textinput.setKeyboardListener(this);
2508        messageListAdapter.updatePreferences();
2509        refresh(false);
2510        activity.invalidateOptionsMenu();
2511        this.conversation.messagesLoaded.set(true);
2512        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2513
2514        if (hasExtras || scrolledToBottomAndNoPending) {
2515            resetUnreadMessagesCount();
2516            synchronized (this.messageList) {
2517                Log.d(Config.LOGTAG, "jump to first unread message");
2518                final Message first = conversation.getFirstUnreadMessage();
2519                final int bottom = Math.max(0, this.messageList.size() - 1);
2520                final int pos;
2521                final boolean jumpToBottom;
2522                if (first == null) {
2523                    pos = bottom;
2524                    jumpToBottom = true;
2525                } else {
2526                    int i = getIndexOf(first.getUuid(), this.messageList);
2527                    pos = i < 0 ? bottom : i;
2528                    jumpToBottom = false;
2529                }
2530                setSelection(pos, jumpToBottom);
2531            }
2532        }
2533
2534        this.binding.messagesView.post(this::fireReadEvent);
2535        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2536        // layout which might be unnecessary since we can *see* it
2537        activity.xmppConnectionService
2538                .getNotificationService()
2539                .setOpenConversation(this.conversation);
2540        return true;
2541    }
2542
2543    private void resetUnreadMessagesCount() {
2544        lastMessageUuid = null;
2545        hideUnreadMessagesCount();
2546    }
2547
2548    private void hideUnreadMessagesCount() {
2549        if (this.binding == null) {
2550            return;
2551        }
2552        this.binding.scrollToBottomButton.setEnabled(false);
2553        this.binding.scrollToBottomButton.hide();
2554        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2555    }
2556
2557    private void setSelection(int pos, boolean jumpToBottom) {
2558        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2559        this.binding.messagesView.post(
2560                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2561        this.binding.messagesView.post(this::fireReadEvent);
2562    }
2563
2564    private boolean scrolledToBottom() {
2565        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2566    }
2567
2568    private void processExtras(final Bundle extras) {
2569        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2570        final String text = extras.getString(Intent.EXTRA_TEXT);
2571        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2572        final String postInitAction =
2573                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2574        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2575        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2576        final boolean doNotAppend =
2577                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2578        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2579        final List<Uri> uris = extractUris(extras);
2580        if (uris != null && uris.size() > 0) {
2581            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2582                mediaPreviewAdapter.addMediaPreviews(
2583                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2584            } else {
2585                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2586                mediaPreviewAdapter.addMediaPreviews(
2587                        Attachment.of(getActivity(), cleanedUris, type));
2588            }
2589            toggleInputMethod();
2590            return;
2591        }
2592        if (nick != null) {
2593            if (pm) {
2594                Jid jid = conversation.getJid();
2595                try {
2596                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2597                    privateMessageWith(next);
2598                } catch (final IllegalArgumentException ignored) {
2599                    // do nothing
2600                }
2601            } else {
2602                final MucOptions mucOptions = conversation.getMucOptions();
2603                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2604                    highlightInConference(nick);
2605                }
2606            }
2607        } else {
2608            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2609                mediaPreviewAdapter.addMediaPreviews(
2610                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2611                toggleInputMethod();
2612                return;
2613            } else if (text != null && asQuote) {
2614                quoteText(text);
2615            } else {
2616                appendText(text, doNotAppend);
2617            }
2618        }
2619        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2620            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2621            return;
2622        }
2623        final Message message =
2624                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2625        if (message != null) {
2626            startDownloadable(message);
2627        }
2628    }
2629
2630    private List<Uri> extractUris(final Bundle extras) {
2631        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2632        if (uris != null) {
2633            return uris;
2634        }
2635        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2636        if (uri != null) {
2637            return Collections.singletonList(uri);
2638        } else {
2639            return null;
2640        }
2641    }
2642
2643    private List<Uri> cleanUris(final List<Uri> uris) {
2644        final Iterator<Uri> iterator = uris.iterator();
2645        while (iterator.hasNext()) {
2646            final Uri uri = iterator.next();
2647            if (FileBackend.dangerousFile(uri)) {
2648                iterator.remove();
2649                Toast.makeText(
2650                                requireActivity(),
2651                                R.string.security_violation_not_attaching_file,
2652                                Toast.LENGTH_SHORT)
2653                        .show();
2654            }
2655        }
2656        return uris;
2657    }
2658
2659    private boolean showBlockSubmenu(View view) {
2660        final Jid jid = conversation.getJid();
2661        final boolean showReject =
2662                !conversation.isWithStranger()
2663                        && conversation
2664                                .getContact()
2665                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2666        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2667        popupMenu.inflate(R.menu.block);
2668        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2669        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2670        popupMenu.setOnMenuItemClickListener(
2671                menuItem -> {
2672                    Blockable blockable;
2673                    switch (menuItem.getItemId()) {
2674                        case R.id.reject:
2675                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2676                                    conversation.getContact());
2677                            updateSnackBar(conversation);
2678                            return true;
2679                        case R.id.block_domain:
2680                            blockable =
2681                                    conversation
2682                                            .getAccount()
2683                                            .getRoster()
2684                                            .getContact(jid.getDomain());
2685                            break;
2686                        default:
2687                            blockable = conversation;
2688                    }
2689                    BlockContactDialog.show(activity, blockable);
2690                    return true;
2691                });
2692        popupMenu.show();
2693        return true;
2694    }
2695
2696    private void updateSnackBar(final Conversation conversation) {
2697        final Account account = conversation.getAccount();
2698        final XmppConnection connection = account.getXmppConnection();
2699        final int mode = conversation.getMode();
2700        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2701        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2702            return;
2703        }
2704        if (account.getStatus() == Account.State.DISABLED) {
2705            showSnackbar(
2706                    R.string.this_account_is_disabled,
2707                    R.string.enable,
2708                    this.mEnableAccountListener);
2709        } else if (account.getStatus() == Account.State.LOGGED_OUT) {
2710            showSnackbar(R.string.this_account_is_logged_out,R.string.log_in,this.mEnableAccountListener);
2711        } else if (conversation.isBlocked()) {
2712            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2713        } else if (contact != null
2714                && !contact.showInRoster()
2715                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2716            showSnackbar(
2717                    R.string.contact_added_you,
2718                    R.string.add_back,
2719                    this.mAddBackClickListener,
2720                    this.mLongPressBlockListener);
2721        } else if (contact != null
2722                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2723            showSnackbar(
2724                    R.string.contact_asks_for_presence_subscription,
2725                    R.string.allow,
2726                    this.mAllowPresenceSubscription,
2727                    this.mLongPressBlockListener);
2728        } else if (mode == Conversation.MODE_MULTI
2729                && !conversation.getMucOptions().online()
2730                && account.getStatus() == Account.State.ONLINE) {
2731            switch (conversation.getMucOptions().getError()) {
2732                case NICK_IN_USE:
2733                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2734                    break;
2735                case NO_RESPONSE:
2736                    showSnackbar(R.string.joining_conference, 0, null);
2737                    break;
2738                case SERVER_NOT_FOUND:
2739                    if (conversation.receivedMessagesCount() > 0) {
2740                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2741                    } else {
2742                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2743                    }
2744                    break;
2745                case REMOTE_SERVER_TIMEOUT:
2746                    if (conversation.receivedMessagesCount() > 0) {
2747                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2748                    } else {
2749                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2750                    }
2751                    break;
2752                case PASSWORD_REQUIRED:
2753                    showSnackbar(
2754                            R.string.conference_requires_password,
2755                            R.string.enter_password,
2756                            enterPassword);
2757                    break;
2758                case BANNED:
2759                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2760                    break;
2761                case MEMBERS_ONLY:
2762                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2763                    break;
2764                case RESOURCE_CONSTRAINT:
2765                    showSnackbar(
2766                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2767                    break;
2768                case KICKED:
2769                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2770                    break;
2771                case TECHNICAL_PROBLEMS:
2772                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
2773                    break;
2774                case UNKNOWN:
2775                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2776                    break;
2777                case INVALID_NICK:
2778                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2779                case SHUTDOWN:
2780                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2781                    break;
2782                case DESTROYED:
2783                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2784                    break;
2785                case NON_ANONYMOUS:
2786                    showSnackbar(
2787                            R.string.group_chat_will_make_your_jabber_id_public,
2788                            R.string.join,
2789                            acceptJoin);
2790                    break;
2791                default:
2792                    hideSnackbar();
2793                    break;
2794            }
2795        } else if (account.hasPendingPgpIntent(conversation)) {
2796            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2797        } else if (connection != null
2798                && connection.getFeatures().blocking()
2799                && conversation.countMessages() != 0
2800                && !conversation.isBlocked()
2801                && conversation.isWithStranger()) {
2802            showSnackbar(
2803                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2804        } else {
2805            hideSnackbar();
2806        }
2807    }
2808
2809    @Override
2810    public void refresh() {
2811        if (this.binding == null) {
2812            Log.d(
2813                    Config.LOGTAG,
2814                    "ConversationFragment.refresh() skipped updated because view binding was null");
2815            return;
2816        }
2817        if (this.conversation != null
2818                && this.activity != null
2819                && this.activity.xmppConnectionService != null) {
2820            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2821                activity.onConversationArchived(this.conversation);
2822                return;
2823            }
2824        }
2825        this.refresh(true);
2826    }
2827
2828    private void refresh(boolean notifyConversationRead) {
2829        synchronized (this.messageList) {
2830            if (this.conversation != null) {
2831                conversation.populateWithMessages(this.messageList);
2832                updateSnackBar(conversation);
2833                updateStatusMessages();
2834                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2835                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2836                    binding.unreadCountCustomView.setUnreadCount(
2837                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2838                }
2839                this.messageListAdapter.notifyDataSetChanged();
2840                updateChatMsgHint();
2841                if (notifyConversationRead && activity != null) {
2842                    binding.messagesView.post(this::fireReadEvent);
2843                }
2844                updateSendButton();
2845                updateEditablity();
2846            }
2847        }
2848    }
2849
2850    protected void messageSent() {
2851        mSendingPgpMessage.set(false);
2852        this.binding.textinput.setText("");
2853        if (conversation.setCorrectingMessage(null)) {
2854            this.binding.textinput.append(conversation.getDraftMessage());
2855            conversation.setDraftMessage(null);
2856        }
2857        storeNextMessage();
2858        updateChatMsgHint();
2859        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2860        final boolean prefScrollToBottom =
2861                p.getBoolean(
2862                        "scroll_to_bottom",
2863                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2864        if (prefScrollToBottom || scrolledToBottom()) {
2865            new Handler()
2866                    .post(
2867                            () -> {
2868                                int size = messageList.size();
2869                                this.binding.messagesView.setSelection(size - 1);
2870                            });
2871        }
2872    }
2873
2874    private boolean storeNextMessage() {
2875        return storeNextMessage(this.binding.textinput.getText().toString());
2876    }
2877
2878    private boolean storeNextMessage(String msg) {
2879        final boolean participating =
2880                conversation.getMode() == Conversational.MODE_SINGLE
2881                        || conversation.getMucOptions().participating();
2882        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
2883                && participating
2884                && this.conversation.setNextMessage(msg)) {
2885            this.activity.xmppConnectionService.updateConversation(this.conversation);
2886            return true;
2887        }
2888        return false;
2889    }
2890
2891    public void doneSendingPgpMessage() {
2892        mSendingPgpMessage.set(false);
2893    }
2894
2895    public long getMaxHttpUploadSize(Conversation conversation) {
2896        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2897        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2898    }
2899
2900    private void updateEditablity() {
2901        boolean canWrite =
2902                this.conversation.getMode() == Conversation.MODE_SINGLE
2903                        || this.conversation.getMucOptions().participating()
2904                        || this.conversation.getNextCounterpart() != null;
2905        this.binding.textinput.setFocusable(canWrite);
2906        this.binding.textinput.setFocusableInTouchMode(canWrite);
2907        this.binding.textSendButton.setEnabled(canWrite);
2908        this.binding.textinput.setCursorVisible(canWrite);
2909        this.binding.textinput.setEnabled(canWrite);
2910    }
2911
2912    public void updateSendButton() {
2913        boolean hasAttachments =
2914                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2915        final Conversation c = this.conversation;
2916        final Presence.Status status;
2917        final String text =
2918                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2919        final SendButtonAction action;
2920        if (hasAttachments) {
2921            action = SendButtonAction.TEXT;
2922        } else {
2923            action = SendButtonTool.getAction(getActivity(), c, text);
2924        }
2925        if (c.getAccount().getStatus() == Account.State.ONLINE) {
2926            if (activity != null
2927                    && activity.xmppConnectionService != null
2928                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2929                status = Presence.Status.OFFLINE;
2930            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2931                status = c.getContact().getShownStatus();
2932            } else {
2933                status =
2934                        c.getMucOptions().online()
2935                                ? Presence.Status.ONLINE
2936                                : Presence.Status.OFFLINE;
2937            }
2938        } else {
2939            status = Presence.Status.OFFLINE;
2940        }
2941        this.binding.textSendButton.setTag(action);
2942        this.binding.textSendButton.setIconResource(SendButtonTool.getSendButtonImageResource(action));
2943        this.binding.textSendButton.setIconTint(ColorStateList.valueOf(SendButtonTool.getSendButtonColor(this.binding.textSendButton, status)));
2944        // TODO send button color
2945        final Activity activity = getActivity();
2946        if (activity != null) {
2947        }
2948    }
2949
2950    protected void updateStatusMessages() {
2951        DateSeparator.addAll(this.messageList);
2952        if (showLoadMoreMessages(conversation)) {
2953            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2954        }
2955        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2956            ChatState state = conversation.getIncomingChatState();
2957            if (state == ChatState.COMPOSING) {
2958                this.messageList.add(
2959                        Message.createStatusMessage(
2960                                conversation,
2961                                getString(R.string.contact_is_typing, conversation.getName())));
2962            } else if (state == ChatState.PAUSED) {
2963                this.messageList.add(
2964                        Message.createStatusMessage(
2965                                conversation,
2966                                getString(
2967                                        R.string.contact_has_stopped_typing,
2968                                        conversation.getName())));
2969            } else {
2970                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2971                    final Message message = this.messageList.get(i);
2972                    if (message.getType() != Message.TYPE_STATUS) {
2973                        if (message.getStatus() == Message.STATUS_RECEIVED) {
2974                            return;
2975                        } else {
2976                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2977                                this.messageList.add(
2978                                        i + 1,
2979                                        Message.createStatusMessage(
2980                                                conversation,
2981                                                getString(
2982                                                        R.string.contact_has_read_up_to_this_point,
2983                                                        conversation.getName())));
2984                                return;
2985                            }
2986                        }
2987                    }
2988                }
2989            }
2990        } else {
2991            final MucOptions mucOptions = conversation.getMucOptions();
2992            final List<MucOptions.User> allUsers = mucOptions.getUsers();
2993            final Set<ReadByMarker> addedMarkers = new HashSet<>();
2994            ChatState state = ChatState.COMPOSING;
2995            List<MucOptions.User> users =
2996                    conversation.getMucOptions().getUsersWithChatState(state, 5);
2997            if (users.size() == 0) {
2998                state = ChatState.PAUSED;
2999                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3000            }
3001            if (mucOptions.isPrivateAndNonAnonymous()) {
3002                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3003                    final Set<ReadByMarker> markersForMessage =
3004                            messageList.get(i).getReadByMarkers();
3005                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3006                    for (ReadByMarker marker : markersForMessage) {
3007                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3008                            addedMarkers.add(
3009                                    marker); // may be put outside this condition. set should do
3010                                             // dedup anyway
3011                            MucOptions.User user = mucOptions.findUser(marker);
3012                            if (user != null && !users.contains(user)) {
3013                                shownMarkers.add(user);
3014                            }
3015                        }
3016                    }
3017                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3018                    final Message statusMessage;
3019                    final int size = shownMarkers.size();
3020                    if (size > 1) {
3021                        final String body;
3022                        if (size <= 4) {
3023                            body =
3024                                    getString(
3025                                            R.string.contacts_have_read_up_to_this_point,
3026                                            UIHelper.concatNames(shownMarkers));
3027                        } else if (ReadByMarker.allUsersRepresented(
3028                                allUsers, markersForMessage, markerForSender)) {
3029                            body = getString(R.string.everyone_has_read_up_to_this_point);
3030                        } else {
3031                            body =
3032                                    getString(
3033                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3034                                            UIHelper.concatNames(shownMarkers, 3),
3035                                            size - 3);
3036                        }
3037                        statusMessage = Message.createStatusMessage(conversation, body);
3038                        statusMessage.setCounterparts(shownMarkers);
3039                    } else if (size == 1) {
3040                        statusMessage =
3041                                Message.createStatusMessage(
3042                                        conversation,
3043                                        getString(
3044                                                R.string.contact_has_read_up_to_this_point,
3045                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3046                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3047                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3048                    } else {
3049                        statusMessage = null;
3050                    }
3051                    if (statusMessage != null) {
3052                        this.messageList.add(i + 1, statusMessage);
3053                    }
3054                    addedMarkers.add(markerForSender);
3055                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3056                        break;
3057                    }
3058                }
3059            }
3060            if (users.size() > 0) {
3061                Message statusMessage;
3062                if (users.size() == 1) {
3063                    MucOptions.User user = users.get(0);
3064                    int id =
3065                            state == ChatState.COMPOSING
3066                                    ? R.string.contact_is_typing
3067                                    : R.string.contact_has_stopped_typing;
3068                    statusMessage =
3069                            Message.createStatusMessage(
3070                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3071                    statusMessage.setTrueCounterpart(user.getRealJid());
3072                    statusMessage.setCounterpart(user.getFullJid());
3073                } else {
3074                    int id =
3075                            state == ChatState.COMPOSING
3076                                    ? R.string.contacts_are_typing
3077                                    : R.string.contacts_have_stopped_typing;
3078                    statusMessage =
3079                            Message.createStatusMessage(
3080                                    conversation, getString(id, UIHelper.concatNames(users)));
3081                    statusMessage.setCounterparts(users);
3082                }
3083                this.messageList.add(statusMessage);
3084            }
3085        }
3086    }
3087
3088    private void stopScrolling() {
3089        long now = SystemClock.uptimeMillis();
3090        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3091        binding.messagesView.dispatchTouchEvent(cancel);
3092    }
3093
3094    private boolean showLoadMoreMessages(final Conversation c) {
3095        if (activity == null || activity.xmppConnectionService == null) {
3096            return false;
3097        }
3098        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3099        final MessageArchiveService service =
3100                activity.xmppConnectionService.getMessageArchiveService();
3101        return mam
3102                && (c.getLastClearHistory().getTimestamp() != 0
3103                        || (c.countMessages() == 0
3104                                && c.messagesLoaded.get()
3105                                && c.hasMessagesLeftOnServer()
3106                                && !service.queryInProgress(c)));
3107    }
3108
3109    private boolean hasMamSupport(final Conversation c) {
3110        if (c.getMode() == Conversation.MODE_SINGLE) {
3111            final XmppConnection connection = c.getAccount().getXmppConnection();
3112            return connection != null && connection.getFeatures().mam();
3113        } else {
3114            return c.getMucOptions().mamSupport();
3115        }
3116    }
3117
3118    protected void showSnackbar(
3119            final int message, final int action, final OnClickListener clickListener) {
3120        showSnackbar(message, action, clickListener, null);
3121    }
3122
3123    protected void showSnackbar(
3124            final int message,
3125            final int action,
3126            final OnClickListener clickListener,
3127            final View.OnLongClickListener longClickListener) {
3128        this.binding.snackbar.setVisibility(View.VISIBLE);
3129        this.binding.snackbar.setOnClickListener(null);
3130        this.binding.snackbarMessage.setText(message);
3131        this.binding.snackbarMessage.setOnClickListener(null);
3132        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3133        if (action != 0) {
3134            this.binding.snackbarAction.setText(action);
3135        }
3136        this.binding.snackbarAction.setOnClickListener(clickListener);
3137        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3138    }
3139
3140    protected void hideSnackbar() {
3141        this.binding.snackbar.setVisibility(View.GONE);
3142    }
3143
3144    protected void sendMessage(Message message) {
3145        activity.xmppConnectionService.sendMessage(message);
3146        messageSent();
3147    }
3148
3149    protected void sendPgpMessage(final Message message) {
3150        final XmppConnectionService xmppService = activity.xmppConnectionService;
3151        final Contact contact = message.getConversation().getContact();
3152        if (!activity.hasPgp()) {
3153            activity.showInstallPgpDialog();
3154            return;
3155        }
3156        if (conversation.getAccount().getPgpSignature() == null) {
3157            activity.announcePgp(
3158                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3159            return;
3160        }
3161        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3162            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3163        }
3164        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3165            if (contact.getPgpKeyId() != 0) {
3166                xmppService
3167                        .getPgpEngine()
3168                        .hasKey(
3169                                contact,
3170                                new UiCallback<Contact>() {
3171
3172                                    @Override
3173                                    public void userInputRequired(
3174                                            PendingIntent pi, Contact contact) {
3175                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3176                                    }
3177
3178                                    @Override
3179                                    public void success(Contact contact) {
3180                                        encryptTextMessage(message);
3181                                    }
3182
3183                                    @Override
3184                                    public void error(int error, Contact contact) {
3185                                        activity.runOnUiThread(
3186                                                () ->
3187                                                        Toast.makeText(
3188                                                                        activity,
3189                                                                        R.string
3190                                                                                .unable_to_connect_to_keychain,
3191                                                                        Toast.LENGTH_SHORT)
3192                                                                .show());
3193                                        mSendingPgpMessage.set(false);
3194                                    }
3195                                });
3196
3197            } else {
3198                showNoPGPKeyDialog(
3199                        false,
3200                        (dialog, which) -> {
3201                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3202                            xmppService.updateConversation(conversation);
3203                            message.setEncryption(Message.ENCRYPTION_NONE);
3204                            xmppService.sendMessage(message);
3205                            messageSent();
3206                        });
3207            }
3208        } else {
3209            if (conversation.getMucOptions().pgpKeysInUse()) {
3210                if (!conversation.getMucOptions().everybodyHasKeys()) {
3211                    Toast warning =
3212                            Toast.makeText(
3213                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3214                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3215                    warning.show();
3216                }
3217                encryptTextMessage(message);
3218            } else {
3219                showNoPGPKeyDialog(
3220                        true,
3221                        (dialog, which) -> {
3222                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3223                            message.setEncryption(Message.ENCRYPTION_NONE);
3224                            xmppService.updateConversation(conversation);
3225                            xmppService.sendMessage(message);
3226                            messageSent();
3227                        });
3228            }
3229        }
3230    }
3231
3232    public void encryptTextMessage(Message message) {
3233        activity.xmppConnectionService
3234                .getPgpEngine()
3235                .encrypt(
3236                        message,
3237                        new UiCallback<Message>() {
3238
3239                            @Override
3240                            public void userInputRequired(PendingIntent pi, Message message) {
3241                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3242                            }
3243
3244                            @Override
3245                            public void success(Message message) {
3246                                // TODO the following two call can be made before the callback
3247                                getActivity().runOnUiThread(() -> messageSent());
3248                            }
3249
3250                            @Override
3251                            public void error(final int error, Message message) {
3252                                getActivity()
3253                                        .runOnUiThread(
3254                                                () -> {
3255                                                    doneSendingPgpMessage();
3256                                                    Toast.makeText(
3257                                                                    getActivity(),
3258                                                                    error == 0
3259                                                                            ? R.string
3260                                                                                    .unable_to_connect_to_keychain
3261                                                                            : error,
3262                                                                    Toast.LENGTH_SHORT)
3263                                                            .show();
3264                                                });
3265                            }
3266                        });
3267    }
3268
3269    public void showNoPGPKeyDialog(final boolean plural, final DialogInterface.OnClickListener listener) {
3270        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
3271        if (plural) {
3272            builder.setTitle(getString(R.string.no_pgp_keys));
3273            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3274        } else {
3275            builder.setTitle(getString(R.string.no_pgp_key));
3276            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3277        }
3278        builder.setNegativeButton(getString(R.string.cancel), null);
3279        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3280        builder.create().show();
3281    }
3282
3283    public void appendText(String text, final boolean doNotAppend) {
3284        if (text == null) {
3285            return;
3286        }
3287        final Editable editable = this.binding.textinput.getText();
3288        String previous = editable == null ? "" : editable.toString();
3289        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3290            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3291                    .show();
3292            return;
3293        }
3294        if (UIHelper.isLastLineQuote(previous)) {
3295            text = '\n' + text;
3296        } else if (previous.length() != 0
3297                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3298            text = " " + text;
3299        }
3300        this.binding.textinput.append(text);
3301    }
3302
3303    @Override
3304    public boolean onEnterPressed(final boolean isCtrlPressed) {
3305        if (isCtrlPressed || enterIsSend()) {
3306            sendMessage();
3307            return true;
3308        }
3309        return false;
3310    }
3311
3312    private boolean enterIsSend() {
3313        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3314        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3315    }
3316
3317    public boolean onArrowUpCtrlPressed() {
3318        final Message lastEditableMessage =
3319                conversation == null ? null : conversation.getLastEditableMessage();
3320        if (lastEditableMessage != null) {
3321            correctMessage(lastEditableMessage);
3322            return true;
3323        } else {
3324            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3325                    .show();
3326            return false;
3327        }
3328    }
3329
3330    @Override
3331    public void onTypingStarted() {
3332        final XmppConnectionService service =
3333                activity == null ? null : activity.xmppConnectionService;
3334        if (service == null) {
3335            return;
3336        }
3337        final Account.State status = conversation.getAccount().getStatus();
3338        if (status == Account.State.ONLINE
3339                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3340            service.sendChatState(conversation);
3341        }
3342        runOnUiThread(this::updateSendButton);
3343    }
3344
3345    @Override
3346    public void onTypingStopped() {
3347        final XmppConnectionService service =
3348                activity == null ? null : activity.xmppConnectionService;
3349        if (service == null) {
3350            return;
3351        }
3352        final Account.State status = conversation.getAccount().getStatus();
3353        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3354            service.sendChatState(conversation);
3355        }
3356    }
3357
3358    @Override
3359    public void onTextDeleted() {
3360        final XmppConnectionService service =
3361                activity == null ? null : activity.xmppConnectionService;
3362        if (service == null) {
3363            return;
3364        }
3365        final Account.State status = conversation.getAccount().getStatus();
3366        if (status == Account.State.ONLINE
3367                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3368            service.sendChatState(conversation);
3369        }
3370        if (storeNextMessage()) {
3371            runOnUiThread(
3372                    () -> {
3373                        if (activity == null) {
3374                            return;
3375                        }
3376                        activity.onConversationsListItemUpdated();
3377                    });
3378        }
3379        runOnUiThread(this::updateSendButton);
3380    }
3381
3382    @Override
3383    public void onTextChanged() {
3384        if (conversation != null && conversation.getCorrectingMessage() != null) {
3385            runOnUiThread(this::updateSendButton);
3386        }
3387    }
3388
3389    @Override
3390    public boolean onTabPressed(boolean repeated) {
3391        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3392            return false;
3393        }
3394        if (repeated) {
3395            completionIndex++;
3396        } else {
3397            lastCompletionLength = 0;
3398            completionIndex = 0;
3399            final String content = this.binding.textinput.getText().toString();
3400            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3401            int start =
3402                    lastCompletionCursor > 0
3403                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3404                            : 0;
3405            firstWord = start == 0;
3406            incomplete = content.substring(start, lastCompletionCursor);
3407        }
3408        List<String> completions = new ArrayList<>();
3409        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3410            String name = user.getName();
3411            if (name != null && name.startsWith(incomplete)) {
3412                completions.add(name + (firstWord ? ": " : " "));
3413            }
3414        }
3415        Collections.sort(completions);
3416        if (completions.size() > completionIndex) {
3417            String completion = completions.get(completionIndex).substring(incomplete.length());
3418            this.binding
3419                    .textinput
3420                    .getEditableText()
3421                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3422            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3423            lastCompletionLength = completion.length();
3424        } else {
3425            completionIndex = -1;
3426            this.binding
3427                    .textinput
3428                    .getEditableText()
3429                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3430            lastCompletionLength = 0;
3431        }
3432        return true;
3433    }
3434
3435    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3436        try {
3437            getActivity()
3438                    .startIntentSenderForResult(
3439                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0, Compatibility.pgpStartIntentSenderOptions());
3440        } catch (final SendIntentException ignored) {
3441        }
3442    }
3443
3444    @Override
3445    public void onBackendConnected() {
3446        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3447        String uuid = pendingConversationsUuid.pop();
3448        if (uuid != null) {
3449            if (!findAndReInitByUuidOrArchive(uuid)) {
3450                return;
3451            }
3452        } else {
3453            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3454                clearPending();
3455                activity.onConversationArchived(conversation);
3456                return;
3457            }
3458        }
3459        ActivityResult activityResult = postponedActivityResult.pop();
3460        if (activityResult != null) {
3461            handleActivityResult(activityResult);
3462        }
3463        clearPending();
3464    }
3465
3466    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3467        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3468        if (conversation == null) {
3469            clearPending();
3470            activity.onConversationArchived(null);
3471            return false;
3472        }
3473        reInit(conversation);
3474        ScrollState scrollState = pendingScrollState.pop();
3475        String lastMessageUuid = pendingLastMessageUuid.pop();
3476        List<Attachment> attachments = pendingMediaPreviews.pop();
3477        if (scrollState != null) {
3478            setScrollPosition(scrollState, lastMessageUuid);
3479        }
3480        if (attachments != null && attachments.size() > 0) {
3481            Log.d(Config.LOGTAG, "had attachments on restore");
3482            mediaPreviewAdapter.addMediaPreviews(attachments);
3483            toggleInputMethod();
3484        }
3485        return true;
3486    }
3487
3488    private void clearPending() {
3489        if (postponedActivityResult.clear()) {
3490            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3491            if (pendingTakePhotoUri.clear()) {
3492                Log.e(Config.LOGTAG, "cleared pending photo uri");
3493            }
3494        }
3495        if (pendingScrollState.clear()) {
3496            Log.e(Config.LOGTAG, "cleared scroll state");
3497        }
3498        if (pendingConversationsUuid.clear()) {
3499            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3500        }
3501        if (pendingMediaPreviews.clear()) {
3502            Log.e(Config.LOGTAG, "cleared pending media previews");
3503        }
3504    }
3505
3506    public Conversation getConversation() {
3507        return conversation;
3508    }
3509
3510    @Override
3511    public void onContactPictureLongClicked(View v, final Message message) {
3512        final String fingerprint;
3513        if (message.getEncryption() == Message.ENCRYPTION_PGP
3514                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3515            fingerprint = "pgp";
3516        } else {
3517            fingerprint = message.getFingerprint();
3518        }
3519        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3520        final Contact contact = message.getContact();
3521        if (message.getStatus() <= Message.STATUS_RECEIVED
3522                && (contact == null || !contact.isSelf())) {
3523            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3524                final Jid cp = message.getCounterpart();
3525                if (cp == null || cp.isBareJid()) {
3526                    return;
3527                }
3528                final Jid tcp = message.getTrueCounterpart();
3529                final User userByRealJid =
3530                        tcp != null
3531                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3532                                : null;
3533                final User user =
3534                        userByRealJid != null
3535                                ? userByRealJid
3536                                : conversation.getMucOptions().findUserByFullJid(cp);
3537                popupMenu.inflate(R.menu.muc_details_context);
3538                final Menu menu = popupMenu.getMenu();
3539                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3540                        activity, menu, conversation, user);
3541                popupMenu.setOnMenuItemClickListener(
3542                        menuItem ->
3543                                MucDetailsContextMenuHelper.onContextItemSelected(
3544                                        menuItem, user, activity, fingerprint));
3545            } else {
3546                popupMenu.inflate(R.menu.one_on_one_context);
3547                popupMenu.setOnMenuItemClickListener(
3548                        item -> {
3549                            switch (item.getItemId()) {
3550                                case R.id.action_contact_details:
3551                                    activity.switchToContactDetails(
3552                                            message.getContact(), fingerprint);
3553                                    break;
3554                                case R.id.action_show_qr_code:
3555                                    activity.showQrCode(
3556                                            "xmpp:"
3557                                                    + message.getContact()
3558                                                            .getJid()
3559                                                            .asBareJid()
3560                                                            .toEscapedString());
3561                                    break;
3562                            }
3563                            return true;
3564                        });
3565            }
3566        } else {
3567            popupMenu.inflate(R.menu.account_context);
3568            final Menu menu = popupMenu.getMenu();
3569            menu.findItem(R.id.action_manage_accounts)
3570                    .setVisible(QuickConversationsService.isConversations());
3571            popupMenu.setOnMenuItemClickListener(
3572                    item -> {
3573                        final XmppActivity activity = this.activity;
3574                        if (activity == null) {
3575                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3576                            return true;
3577                        }
3578                        switch (item.getItemId()) {
3579                            case R.id.action_show_qr_code:
3580                                activity.showQrCode(conversation.getAccount().getShareableUri());
3581                                break;
3582                            case R.id.action_account_details:
3583                                activity.switchToAccount(
3584                                        message.getConversation().getAccount(), fingerprint);
3585                                break;
3586                            case R.id.action_manage_accounts:
3587                                AccountUtils.launchManageAccounts(activity);
3588                                break;
3589                        }
3590                        return true;
3591                    });
3592        }
3593        popupMenu.show();
3594    }
3595
3596    @Override
3597    public void onContactPictureClicked(Message message) {
3598        String fingerprint;
3599        if (message.getEncryption() == Message.ENCRYPTION_PGP
3600                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3601            fingerprint = "pgp";
3602        } else {
3603            fingerprint = message.getFingerprint();
3604        }
3605        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3606        if (received) {
3607            if (message.getConversation() instanceof Conversation
3608                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3609                Jid tcp = message.getTrueCounterpart();
3610                Jid user = message.getCounterpart();
3611                if (user != null && !user.isBareJid()) {
3612                    final MucOptions mucOptions =
3613                            ((Conversation) message.getConversation()).getMucOptions();
3614                    if (mucOptions.participating()
3615                            || ((Conversation) message.getConversation()).getNextCounterpart()
3616                                    != null) {
3617                        if (!mucOptions.isUserInRoom(user)
3618                                && mucOptions.findUserByRealJid(
3619                                                tcp == null ? null : tcp.asBareJid())
3620                                        == null) {
3621                            Toast.makeText(
3622                                            getActivity(),
3623                                            activity.getString(
3624                                                    R.string.user_has_left_conference,
3625                                                    user.getResource()),
3626                                            Toast.LENGTH_SHORT)
3627                                    .show();
3628                        }
3629                        highlightInConference(user.getResource());
3630                    } else {
3631                        Toast.makeText(
3632                                        getActivity(),
3633                                        R.string.you_are_not_participating,
3634                                        Toast.LENGTH_SHORT)
3635                                .show();
3636                    }
3637                }
3638                return;
3639            } else {
3640                if (!message.getContact().isSelf()) {
3641                    activity.switchToContactDetails(message.getContact(), fingerprint);
3642                    return;
3643                }
3644            }
3645        }
3646        activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
3647    }
3648
3649    private Activity requireActivity() {
3650        final Activity activity = getActivity();
3651        if (activity == null) {
3652            throw new IllegalStateException("Activity not attached");
3653        }
3654        return activity;
3655    }
3656}