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.isEmpty() || 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.setUuid(UUID.randomUUID().toString());
 871        }
 872        switch (conversation.getNextEncryption()) {
 873            case Message.ENCRYPTION_PGP:
 874                sendPgpMessage(message);
 875                break;
 876            default:
 877                sendMessage(message);
 878        }
 879    }
 880
 881    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 882        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 883                && trustKeysIfNeeded(requestCode);
 884    }
 885
 886    protected boolean trustKeysIfNeeded(int requestCode) {
 887        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 888        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 889        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 890        boolean hasUndecidedOwn =
 891                !axolotlService
 892                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 893                        .isEmpty();
 894        boolean hasUndecidedContacts =
 895                !axolotlService
 896                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 897                        .isEmpty();
 898        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 899        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 900        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 901        if (hasUndecidedOwn
 902                || hasUndecidedContacts
 903                || hasPendingKeys
 904                || hasNoTrustedKeys
 905                || hasUnaccepted
 906                || downloadInProgress) {
 907            axolotlService.createSessionsIfNeeded(conversation);
 908            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 909            String[] contacts = new String[targets.size()];
 910            for (int i = 0; i < contacts.length; ++i) {
 911                contacts[i] = targets.get(i).toString();
 912            }
 913            intent.putExtra("contacts", contacts);
 914            intent.putExtra(
 915                    EXTRA_ACCOUNT,
 916                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 917            intent.putExtra("conversation", conversation.getUuid());
 918            startActivityForResult(intent, requestCode);
 919            return true;
 920        } else {
 921            return false;
 922        }
 923    }
 924
 925    public void updateChatMsgHint() {
 926        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 927        if (conversation.getCorrectingMessage() != null) {
 928            this.binding.textInputHint.setVisibility(View.GONE);
 929            this.binding.textinput.setHint(R.string.send_corrected_message);
 930        } else if (multi && conversation.getNextCounterpart() != null) {
 931            this.binding.textinput.setHint(R.string.send_unencrypted_message);
 932            this.binding.textInputHint.setVisibility(View.VISIBLE);
 933            this.binding.textInputHint.setText(
 934                    getString(
 935                            R.string.send_private_message_to,
 936                            conversation.getNextCounterpart().getResource()));
 937        } else if (multi && !conversation.getMucOptions().participating()) {
 938            this.binding.textInputHint.setVisibility(View.GONE);
 939            this.binding.textinput.setHint(R.string.you_are_not_participating);
 940        } else {
 941            this.binding.textInputHint.setVisibility(View.GONE);
 942            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 943            getActivity().invalidateOptionsMenu();
 944        }
 945    }
 946
 947    public void setupIme() {
 948        this.binding.textinput.refreshIme();
 949    }
 950
 951    private void handleActivityResult(ActivityResult activityResult) {
 952        if (activityResult.resultCode == Activity.RESULT_OK) {
 953            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 954        } else {
 955            handleNegativeActivityResult(activityResult.requestCode);
 956        }
 957    }
 958
 959    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 960        switch (requestCode) {
 961            case REQUEST_TRUST_KEYS_TEXT:
 962                sendMessage();
 963                break;
 964            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 965                commitAttachments();
 966                break;
 967            case REQUEST_START_AUDIO_CALL:
 968                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
 969                break;
 970            case REQUEST_START_VIDEO_CALL:
 971                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
 972                break;
 973            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 974                final List<Attachment> imageUris =
 975                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 976                mediaPreviewAdapter.addMediaPreviews(imageUris);
 977                toggleInputMethod();
 978                break;
 979            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 980                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 981                if (takePhotoUri != null) {
 982                    mediaPreviewAdapter.addMediaPreviews(
 983                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 984                    toggleInputMethod();
 985                } else {
 986                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 987                }
 988                break;
 989            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 990            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 991            case ATTACHMENT_CHOICE_RECORD_VOICE:
 992                final Attachment.Type type =
 993                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
 994                                ? Attachment.Type.RECORDING
 995                                : Attachment.Type.FILE;
 996                final List<Attachment> fileUris =
 997                        Attachment.extractAttachments(getActivity(), data, type);
 998                mediaPreviewAdapter.addMediaPreviews(fileUris);
 999                toggleInputMethod();
1000                break;
1001            case ATTACHMENT_CHOICE_LOCATION:
1002                final double latitude = data.getDoubleExtra("latitude", 0);
1003                final double longitude = data.getDoubleExtra("longitude", 0);
1004                final int accuracy = data.getIntExtra("accuracy", 0);
1005                final Uri geo;
1006                if (accuracy > 0) {
1007                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1008                } else {
1009                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1010                }
1011                mediaPreviewAdapter.addMediaPreviews(
1012                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1013                toggleInputMethod();
1014                break;
1015            case REQUEST_INVITE_TO_CONVERSATION:
1016                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1017                if (invite != null) {
1018                    if (invite.execute(activity)) {
1019                        activity.mToast =
1020                                Toast.makeText(
1021                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1022                        activity.mToast.show();
1023                    }
1024                }
1025                break;
1026        }
1027    }
1028
1029    private void commitAttachments() {
1030        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1031        if (anyNeedsExternalStoragePermission(attachments)
1032                && !hasPermissions(
1033                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1034            return;
1035        }
1036        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1037            return;
1038        }
1039        final PresenceSelector.OnPresenceSelected callback =
1040                () -> {
1041                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1042                        final Attachment attachment = i.next();
1043                        if (attachment.getType() == Attachment.Type.LOCATION) {
1044                            attachLocationToConversation(conversation, attachment.getUri());
1045                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1046                            Log.d(
1047                                    Config.LOGTAG,
1048                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1049                            attachImageToConversation(
1050                                    conversation, attachment.getUri(), attachment.getMime());
1051                        } else {
1052                            Log.d(
1053                                    Config.LOGTAG,
1054                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1055                            attachFileToConversation(
1056                                    conversation, attachment.getUri(), attachment.getMime());
1057                        }
1058                    }
1059                    mediaPreviewAdapter.notifyDataSetChanged();
1060                    toggleInputMethod();
1061                };
1062        if (conversation == null
1063                || conversation.getMode() == Conversation.MODE_MULTI
1064                || Attachment.canBeSendInBand(attachments)
1065                || (conversation.getAccount().httpUploadAvailable()
1066                        && FileBackend.allFilesUnderSize(
1067                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1068            callback.onPresenceSelected();
1069        } else {
1070            activity.selectPresence(conversation, callback);
1071        }
1072    }
1073
1074    private static boolean anyNeedsExternalStoragePermission(
1075            final Collection<Attachment> attachments) {
1076        for (final Attachment attachment : attachments) {
1077            if (attachment.getType() != Attachment.Type.LOCATION) {
1078                return true;
1079            }
1080        }
1081        return false;
1082    }
1083
1084    public void toggleInputMethod() {
1085        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1086        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1087        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1088        updateSendButton();
1089    }
1090
1091    private void handleNegativeActivityResult(int requestCode) {
1092        switch (requestCode) {
1093            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1094                if (pendingTakePhotoUri.clear()) {
1095                    Log.d(
1096                            Config.LOGTAG,
1097                            "cleared pending photo uri after negative activity result");
1098                }
1099                break;
1100        }
1101    }
1102
1103    @Override
1104    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1105        super.onActivityResult(requestCode, resultCode, data);
1106        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1107        if (activity != null && activity.xmppConnectionService != null) {
1108            handleActivityResult(activityResult);
1109        } else {
1110            this.postponedActivityResult.push(activityResult);
1111        }
1112    }
1113
1114    public void unblockConversation(final Blockable conversation) {
1115        activity.xmppConnectionService.sendUnblockRequest(conversation);
1116    }
1117
1118    @Override
1119    public void onAttach(Activity activity) {
1120        super.onAttach(activity);
1121        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1122        if (activity instanceof ConversationsActivity) {
1123            this.activity = (ConversationsActivity) activity;
1124        } else {
1125            throw new IllegalStateException(
1126                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1127        }
1128    }
1129
1130    @Override
1131    public void onDetach() {
1132        super.onDetach();
1133        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1134    }
1135
1136    @Override
1137    public void onCreate(Bundle savedInstanceState) {
1138        super.onCreate(savedInstanceState);
1139        setHasOptionsMenu(true);
1140    }
1141
1142    @Override
1143    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1144        menuInflater.inflate(R.menu.fragment_conversation, menu);
1145        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1146        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1147        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1148        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1149        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1150        final MenuItem menuCall = menu.findItem(R.id.action_call);
1151        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1152        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1153        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1154
1155        if (conversation != null) {
1156            if (conversation.getMode() == Conversation.MODE_MULTI) {
1157                menuContactDetails.setVisible(false);
1158                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1159                menuMucDetails.setTitle(
1160                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1161                                ? R.string.action_muc_details
1162                                : R.string.channel_details);
1163                menuCall.setVisible(false);
1164                menuOngoingCall.setVisible(false);
1165            } else {
1166                final XmppConnectionService service =
1167                        activity == null ? null : activity.xmppConnectionService;
1168                final Optional<OngoingRtpSession> ongoingRtpSession =
1169                        service == null
1170                                ? Optional.absent()
1171                                : service.getJingleConnectionManager()
1172                                        .getOngoingRtpConnection(conversation.getContact());
1173                if (ongoingRtpSession.isPresent()) {
1174                    menuOngoingCall.setVisible(true);
1175                    menuCall.setVisible(false);
1176                } else {
1177                    menuOngoingCall.setVisible(false);
1178                    // use RtpCapability.check(conversation.getContact()); to check if contact
1179                    // actually has support
1180                    final boolean cameraAvailable =
1181                            activity != null && activity.isCameraFeatureAvailable();
1182                    menuCall.setVisible(true);
1183                    menuVideoCall.setVisible(cameraAvailable);
1184                }
1185                menuContactDetails.setVisible(!this.conversation.withSelf());
1186                menuMucDetails.setVisible(false);
1187                menuInviteContact.setVisible(
1188                        service != null
1189                                && service.findConferenceServer(conversation.getAccount()) != null);
1190            }
1191            if (conversation.isMuted()) {
1192                menuMute.setVisible(false);
1193            } else {
1194                menuUnmute.setVisible(false);
1195            }
1196            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1197            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1198            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1199                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1200            } else {
1201                menuTogglePinned.setTitle(R.string.add_to_favorites);
1202            }
1203        }
1204        super.onCreateOptionsMenu(menu, menuInflater);
1205    }
1206
1207    @Override
1208    public View onCreateView(
1209            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1210        this.binding =
1211                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1212        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1213
1214        binding.textinput.addTextChangedListener(
1215                new StylingHelper.MessageEditorStyler(binding.textinput));
1216
1217        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1218        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1219
1220        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1221
1222        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1223        binding.messagesView.setOnScrollListener(mOnScrollListener);
1224        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1225        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1226        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1227        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1228        messageListAdapter.setOnContactPictureClicked(this);
1229        messageListAdapter.setOnContactPictureLongClicked(this);
1230        binding.messagesView.setAdapter(messageListAdapter);
1231
1232        registerForContextMenu(binding.messagesView);
1233
1234        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1235            this.binding.textinput.setCustomInsertionActionModeCallback(
1236                    new EditMessageActionModeCallback(this.binding.textinput));
1237        }
1238
1239        return binding.getRoot();
1240    }
1241
1242    @Override
1243    public void onDestroyView() {
1244        super.onDestroyView();
1245        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1246        messageListAdapter.setOnContactPictureClicked(null);
1247        messageListAdapter.setOnContactPictureLongClicked(null);
1248    }
1249
1250    private void quoteText(String text) {
1251        if (binding.textinput.isEnabled()) {
1252            binding.textinput.insertAsQuote(text);
1253            binding.textinput.requestFocus();
1254            InputMethodManager inputMethodManager =
1255                    (InputMethodManager)
1256                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1257            if (inputMethodManager != null) {
1258                inputMethodManager.showSoftInput(
1259                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1260            }
1261        }
1262    }
1263
1264    private void quoteMessage(Message message) {
1265        quoteText(MessageUtils.prepareQuote(message));
1266    }
1267
1268    @Override
1269    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1270        // This should cancel any remaining click events that would otherwise trigger links
1271        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1272        synchronized (this.messageList) {
1273            super.onCreateContextMenu(menu, v, menuInfo);
1274            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1275            this.selectedMessage = this.messageList.get(acmi.position);
1276            populateContextMenu(menu);
1277        }
1278    }
1279
1280    private void populateContextMenu(ContextMenu menu) {
1281        final Message m = this.selectedMessage;
1282        final Transferable t = m.getTransferable();
1283        Message relevantForCorrection = m;
1284        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1285            relevantForCorrection = relevantForCorrection.next();
1286        }
1287        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1288
1289            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1290                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1291                return;
1292            }
1293
1294            if (m.getStatus() == Message.STATUS_RECEIVED
1295                    && t != null
1296                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1297                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1298                return;
1299            }
1300
1301            final boolean deleted = m.isDeleted();
1302            final boolean encrypted =
1303                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1304                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1305            final boolean receiving =
1306                    m.getStatus() == Message.STATUS_RECEIVED
1307                            && (t instanceof JingleFileTransferConnection
1308                                    || t instanceof HttpDownloadConnection);
1309            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1310            menu.setHeaderTitle(R.string.message_options);
1311            final MenuItem addReaction = menu.findItem(R.id.action_add_reaction);
1312            final MenuItem reportAndBlock = menu.findItem(R.id.action_report_and_block);
1313            final MenuItem openWith = menu.findItem(R.id.open_with);
1314            final MenuItem copyMessage = menu.findItem(R.id.copy_message);
1315            final MenuItem copyLink = menu.findItem(R.id.copy_link);
1316            final MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1317            final MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1318            final MenuItem correctMessage = menu.findItem(R.id.correct_message);
1319            final MenuItem shareWith = menu.findItem(R.id.share_with);
1320            final MenuItem sendAgain = menu.findItem(R.id.send_again);
1321            final MenuItem copyUrl = menu.findItem(R.id.copy_url);
1322            final MenuItem downloadFile = menu.findItem(R.id.download_file);
1323            final MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1324            final MenuItem deleteFile = menu.findItem(R.id.delete_file);
1325            final MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1326            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1327            final boolean showError =
1328                    m.getStatus() == Message.STATUS_SEND_FAILED
1329                            && m.getErrorMessage() != null
1330                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1331            final Conversational conversational = m.getConversation();
1332            if (m.getStatus() == Message.STATUS_RECEIVED && conversational instanceof Conversation c) {
1333                final XmppConnection connection = c.getAccount().getXmppConnection();
1334                if (c.isWithStranger()
1335                        && m.getServerMsgId() != null
1336                        && !c.isBlocked()
1337                        && connection != null
1338                        && connection.getFeatures().spamReporting()) {
1339                    reportAndBlock.setVisible(true);
1340                }
1341            }
1342            if (conversational instanceof Conversation c) {
1343                addReaction.setVisible(
1344                        !showError
1345                                && !m.isDeleted()
1346                                && (c.getMode() == Conversational.MODE_SINGLE
1347                                        || (c.getMucOptions().occupantId()
1348                                                && c.getMucOptions().participating())));
1349            } else {
1350                addReaction.setVisible(false);
1351            }
1352            if (!m.isFileOrImage()
1353                    && !encrypted
1354                    && !m.isGeoUri()
1355                    && !m.treatAsDownloadable()
1356                    && !unInitiatedButKnownSize
1357                    && t == null) {
1358                copyMessage.setVisible(true);
1359                quoteMessage.setVisible(!showError && !MessageUtils.prepareQuote(m).isEmpty());
1360                final String scheme = ShareUtil.getLinkScheme(m.getMergedBody());
1361                if ("xmpp".equals(scheme)) {
1362                    copyLink.setTitle(R.string.copy_jabber_id);
1363                    copyLink.setVisible(true);
1364                } else if (scheme != null) {
1365                    copyLink.setVisible(true);
1366                }
1367            }
1368            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1369                retryDecryption.setVisible(true);
1370            }
1371            if (!showError
1372                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1373                    && !m.isGeoUri()
1374                    && relevantForCorrection.isLastCorrectableMessage()
1375                    && m.getConversation() instanceof Conversation) {
1376                correctMessage.setVisible(true);
1377            }
1378            if ((m.isFileOrImage() && !deleted && !receiving)
1379                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1380                            && !unInitiatedButKnownSize
1381                            && t == null) {
1382                shareWith.setVisible(true);
1383            }
1384            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1385                sendAgain.setVisible(true);
1386            }
1387            if (m.hasFileOnRemoteHost()
1388                    || m.isGeoUri()
1389                    || m.treatAsDownloadable()
1390                    || unInitiatedButKnownSize
1391                    || t instanceof HttpDownloadConnection) {
1392                copyUrl.setVisible(true);
1393            }
1394            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1395                downloadFile.setVisible(true);
1396                downloadFile.setTitle(
1397                        activity.getString(
1398                                R.string.download_x_file,
1399                                UIHelper.getFileDescriptionString(activity, m)));
1400            }
1401            final boolean waitingOfferedSending =
1402                    m.getStatus() == Message.STATUS_WAITING
1403                            || m.getStatus() == Message.STATUS_UNSEND
1404                            || m.getStatus() == Message.STATUS_OFFERED;
1405            final boolean cancelable =
1406                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1407            if (cancelable) {
1408                cancelTransmission.setVisible(true);
1409            }
1410            if (m.isFileOrImage() && !deleted && !cancelable) {
1411                final String path = m.getRelativeFilePath();
1412                if (path == null
1413                        || !path.startsWith("/")
1414                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1415                    deleteFile.setVisible(true);
1416                    deleteFile.setTitle(
1417                            activity.getString(
1418                                    R.string.delete_x_file,
1419                                    UIHelper.getFileDescriptionString(activity, m)));
1420                }
1421            }
1422            if (showError) {
1423                showErrorMessage.setVisible(true);
1424            }
1425            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1426            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1427                    || (mime != null && mime.startsWith("audio/"))) {
1428                openWith.setVisible(true);
1429            }
1430        }
1431    }
1432
1433    @Override
1434    public boolean onContextItemSelected(MenuItem item) {
1435        switch (item.getItemId()) {
1436            case R.id.share_with:
1437                ShareUtil.share(activity, selectedMessage);
1438                return true;
1439            case R.id.correct_message:
1440                correctMessage(selectedMessage);
1441                return true;
1442            case R.id.copy_message:
1443                ShareUtil.copyToClipboard(activity, selectedMessage);
1444                return true;
1445            case R.id.copy_link:
1446                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1447                return true;
1448            case R.id.quote_message:
1449                quoteMessage(selectedMessage);
1450                return true;
1451            case R.id.send_again:
1452                resendMessage(selectedMessage);
1453                return true;
1454            case R.id.copy_url:
1455                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1456                return true;
1457            case R.id.download_file:
1458                startDownloadable(selectedMessage);
1459                return true;
1460            case R.id.cancel_transmission:
1461                cancelTransmission(selectedMessage);
1462                return true;
1463            case R.id.retry_decryption:
1464                retryDecryption(selectedMessage);
1465                return true;
1466            case R.id.delete_file:
1467                deleteFile(selectedMessage);
1468                return true;
1469            case R.id.show_error_message:
1470                showErrorMessage(selectedMessage);
1471                return true;
1472            case R.id.open_with:
1473                openWith(selectedMessage);
1474                return true;
1475            case R.id.action_report_and_block:
1476                reportMessage(selectedMessage);
1477                return true;
1478            case R.id.action_add_reaction:
1479                addReaction(selectedMessage);
1480                return true;
1481            default:
1482                return super.onContextItemSelected(item);
1483        }
1484    }
1485
1486    @Override
1487    public boolean onOptionsItemSelected(final MenuItem item) {
1488        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1489            return false;
1490        } else if (conversation == null) {
1491            return super.onOptionsItemSelected(item);
1492        }
1493        switch (item.getItemId()) {
1494            case R.id.encryption_choice_axolotl:
1495            case R.id.encryption_choice_pgp:
1496            case R.id.encryption_choice_none:
1497                handleEncryptionSelection(item);
1498                break;
1499            case R.id.attach_choose_picture:
1500            case R.id.attach_take_picture:
1501            case R.id.attach_record_video:
1502            case R.id.attach_choose_file:
1503            case R.id.attach_record_voice:
1504            case R.id.attach_location:
1505                handleAttachmentSelection(item);
1506                break;
1507            case R.id.action_search:
1508                startSearch();
1509                break;
1510            case R.id.action_archive:
1511                activity.xmppConnectionService.archiveConversation(conversation);
1512                break;
1513            case R.id.action_contact_details:
1514                activity.switchToContactDetails(conversation.getContact());
1515                break;
1516            case R.id.action_muc_details:
1517                ConferenceDetailsActivity.open(getActivity(), conversation);
1518                break;
1519            case R.id.action_invite:
1520                startActivityForResult(
1521                        ChooseContactActivity.create(activity, conversation),
1522                        REQUEST_INVITE_TO_CONVERSATION);
1523                break;
1524            case R.id.action_clear_history:
1525                clearHistoryDialog(conversation);
1526                break;
1527            case R.id.action_mute:
1528                muteConversationDialog(conversation);
1529                break;
1530            case R.id.action_unmute:
1531                unMuteConversation(conversation);
1532                break;
1533            case R.id.action_block:
1534            case R.id.action_unblock:
1535                final Activity activity = getActivity();
1536                if (activity instanceof XmppActivity) {
1537                    BlockContactDialog.show((XmppActivity) activity, conversation);
1538                }
1539                break;
1540            case R.id.action_audio_call:
1541                checkPermissionAndTriggerAudioCall();
1542                break;
1543            case R.id.action_video_call:
1544                checkPermissionAndTriggerVideoCall();
1545                break;
1546            case R.id.action_ongoing_call:
1547                returnToOngoingCall();
1548                break;
1549            case R.id.action_toggle_pinned:
1550                togglePinned();
1551                break;
1552            default:
1553                break;
1554        }
1555        return super.onOptionsItemSelected(item);
1556    }
1557
1558    private void startSearch() {
1559        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1560        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1561        startActivity(intent);
1562    }
1563
1564    private void returnToOngoingCall() {
1565        final Optional<OngoingRtpSession> ongoingRtpSession =
1566                activity.xmppConnectionService
1567                        .getJingleConnectionManager()
1568                        .getOngoingRtpConnection(conversation.getContact());
1569        if (ongoingRtpSession.isPresent()) {
1570            final OngoingRtpSession id = ongoingRtpSession.get();
1571            final Intent intent = new Intent(getActivity(), RtpSessionActivity.class);
1572            intent.setAction(Intent.ACTION_VIEW);
1573            intent.putExtra(
1574                    RtpSessionActivity.EXTRA_ACCOUNT,
1575                    id.getAccount().getJid().asBareJid().toEscapedString());
1576            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1577            if (id instanceof AbstractJingleConnection) {
1578                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1579                startActivity(intent);
1580            } else if (id instanceof JingleConnectionManager.RtpSessionProposal proposal) {
1581                if (Media.audioOnly(proposal.media)) {
1582                    intent.putExtra(
1583                            RtpSessionActivity.EXTRA_LAST_ACTION,
1584                            RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1585                } else {
1586                    intent.putExtra(
1587                            RtpSessionActivity.EXTRA_LAST_ACTION,
1588                            RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1589                }
1590                intent.putExtra(RtpSessionActivity.EXTRA_PROPOSED_SESSION_ID, proposal.sessionId);
1591                startActivity(intent);
1592            }
1593        }
1594    }
1595
1596    private void togglePinned() {
1597        final boolean pinned =
1598                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1599        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1600        activity.xmppConnectionService.updateConversation(conversation);
1601        activity.invalidateOptionsMenu();
1602    }
1603
1604    private void checkPermissionAndTriggerAudioCall() {
1605        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1606            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1607            return;
1608        }
1609        final List<String> permissions;
1610        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1611            permissions =
1612                    Arrays.asList(
1613                            Manifest.permission.RECORD_AUDIO,
1614                            Manifest.permission.BLUETOOTH_CONNECT);
1615        } else {
1616            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1617        }
1618        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1619            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1620        }
1621    }
1622
1623    private void checkPermissionAndTriggerVideoCall() {
1624        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1625            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1626            return;
1627        }
1628        final List<String> permissions;
1629        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1630            permissions =
1631                    Arrays.asList(
1632                            Manifest.permission.RECORD_AUDIO,
1633                            Manifest.permission.CAMERA,
1634                            Manifest.permission.BLUETOOTH_CONNECT);
1635        } else {
1636            permissions =
1637                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1638        }
1639        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1640            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1641        }
1642    }
1643
1644    private void triggerRtpSession(final String action) {
1645        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy()) {
1646            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1647                    .show();
1648            return;
1649        }
1650        final Account account = conversation.getAccount();
1651        if (account.setOption(Account.OPTION_SOFT_DISABLED, false)) {
1652            activity.xmppConnectionService.updateAccount(account);
1653        }
1654        final Contact contact = conversation.getContact();
1655        if (Config.USE_JINGLE_MESSAGE_INIT && RtpCapability.jmiSupport(contact)) {
1656            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1657        } else {
1658            final RtpCapability.Capability capability;
1659            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1660                capability = RtpCapability.Capability.VIDEO;
1661            } else {
1662                capability = RtpCapability.Capability.AUDIO;
1663            }
1664            PresenceSelector.selectFullJidForDirectRtpConnection(
1665                    activity,
1666                    contact,
1667                    capability,
1668                    fullJid -> {
1669                        triggerRtpSession(contact.getAccount(), fullJid, action);
1670                    });
1671        }
1672    }
1673
1674    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1675        CallIntegrationConnectionService.placeCall(activity.xmppConnectionService, account,with,RtpSessionActivity.actionToMedia(action));
1676    }
1677
1678    private void handleAttachmentSelection(MenuItem item) {
1679        switch (item.getItemId()) {
1680            case R.id.attach_choose_picture:
1681                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1682                break;
1683            case R.id.attach_take_picture:
1684                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1685                break;
1686            case R.id.attach_record_video:
1687                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1688                break;
1689            case R.id.attach_choose_file:
1690                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1691                break;
1692            case R.id.attach_record_voice:
1693                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1694                break;
1695            case R.id.attach_location:
1696                attachFile(ATTACHMENT_CHOICE_LOCATION);
1697                break;
1698        }
1699    }
1700
1701    private void handleEncryptionSelection(MenuItem item) {
1702        if (conversation == null) {
1703            return;
1704        }
1705        final boolean updated;
1706        switch (item.getItemId()) {
1707            case R.id.encryption_choice_none:
1708                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1709                item.setChecked(true);
1710                break;
1711            case R.id.encryption_choice_pgp:
1712                if (activity.hasPgp()) {
1713                    if (conversation.getAccount().getPgpSignature() != null) {
1714                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1715                        item.setChecked(true);
1716                    } else {
1717                        updated = false;
1718                        activity.announcePgp(
1719                                conversation.getAccount(),
1720                                conversation,
1721                                null,
1722                                activity.onOpenPGPKeyPublished);
1723                    }
1724                } else {
1725                    activity.showInstallPgpDialog();
1726                    updated = false;
1727                }
1728                break;
1729            case R.id.encryption_choice_axolotl:
1730                Log.d(
1731                        Config.LOGTAG,
1732                        AxolotlService.getLogprefix(conversation.getAccount())
1733                                + "Enabled axolotl for Contact "
1734                                + conversation.getContact().getJid());
1735                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1736                item.setChecked(true);
1737                break;
1738            default:
1739                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1740                break;
1741        }
1742        if (updated) {
1743            activity.xmppConnectionService.updateConversation(conversation);
1744        }
1745        updateChatMsgHint();
1746        getActivity().invalidateOptionsMenu();
1747        activity.refreshUi();
1748    }
1749
1750    public void attachFile(final int attachmentChoice) {
1751        attachFile(attachmentChoice, true);
1752    }
1753
1754    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1755        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1756            if (!hasPermissions(
1757                    attachmentChoice,
1758                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1759                    Manifest.permission.RECORD_AUDIO)) {
1760                return;
1761            }
1762        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1763                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1764            if (!hasPermissions(
1765                    attachmentChoice,
1766                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1767                    Manifest.permission.CAMERA)) {
1768                return;
1769            }
1770        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1771            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1772                return;
1773            }
1774        }
1775        if (updateRecentlyUsed) {
1776            storeRecentlyUsedQuickAction(attachmentChoice);
1777        }
1778        final int encryption = conversation.getNextEncryption();
1779        final int mode = conversation.getMode();
1780        if (encryption == Message.ENCRYPTION_PGP) {
1781            if (activity.hasPgp()) {
1782                if (mode == Conversation.MODE_SINGLE
1783                        && conversation.getContact().getPgpKeyId() != 0) {
1784                    activity.xmppConnectionService
1785                            .getPgpEngine()
1786                            .hasKey(
1787                                    conversation.getContact(),
1788                                    new UiCallback<Contact>() {
1789
1790                                        @Override
1791                                        public void userInputRequired(
1792                                                PendingIntent pi, Contact contact) {
1793                                            startPendingIntent(pi, attachmentChoice);
1794                                        }
1795
1796                                        @Override
1797                                        public void success(Contact contact) {
1798                                            invokeAttachFileIntent(attachmentChoice);
1799                                        }
1800
1801                                        @Override
1802                                        public void error(int error, Contact contact) {
1803                                            activity.replaceToast(getString(error));
1804                                        }
1805                                    });
1806                } else if (mode == Conversation.MODE_MULTI
1807                        && conversation.getMucOptions().pgpKeysInUse()) {
1808                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1809                        Toast warning =
1810                                Toast.makeText(
1811                                        getActivity(),
1812                                        R.string.missing_public_keys,
1813                                        Toast.LENGTH_LONG);
1814                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1815                        warning.show();
1816                    }
1817                    invokeAttachFileIntent(attachmentChoice);
1818                } else {
1819                    showNoPGPKeyDialog(
1820                            false,
1821                            (dialog, which) -> {
1822                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1823                                activity.xmppConnectionService.updateConversation(conversation);
1824                                invokeAttachFileIntent(attachmentChoice);
1825                            });
1826                }
1827            } else {
1828                activity.showInstallPgpDialog();
1829            }
1830        } else {
1831            invokeAttachFileIntent(attachmentChoice);
1832        }
1833    }
1834
1835    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1836        try {
1837            activity.getPreferences()
1838                    .edit()
1839                    .putString(
1840                            RECENTLY_USED_QUICK_ACTION,
1841                            SendButtonAction.of(attachmentChoice).toString())
1842                    .apply();
1843        } catch (IllegalArgumentException e) {
1844            // just do not save
1845        }
1846    }
1847
1848    @Override
1849    public void onRequestPermissionsResult(
1850            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1851        final PermissionUtils.PermissionResult permissionResult =
1852                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1853        if (grantResults.length > 0) {
1854            if (allGranted(permissionResult.grantResults)) {
1855                switch (requestCode) {
1856                    case REQUEST_START_DOWNLOAD:
1857                        if (this.mPendingDownloadableMessage != null) {
1858                            startDownloadable(this.mPendingDownloadableMessage);
1859                        }
1860                        break;
1861                    case REQUEST_ADD_EDITOR_CONTENT:
1862                        if (this.mPendingEditorContent != null) {
1863                            attachEditorContentToConversation(this.mPendingEditorContent);
1864                        }
1865                        break;
1866                    case REQUEST_COMMIT_ATTACHMENTS:
1867                        commitAttachments();
1868                        break;
1869                    case REQUEST_START_AUDIO_CALL:
1870                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1871                        break;
1872                    case REQUEST_START_VIDEO_CALL:
1873                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1874                        break;
1875                    default:
1876                        attachFile(requestCode);
1877                        break;
1878                }
1879            } else {
1880                @StringRes int res;
1881                String firstDenied =
1882                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
1883                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1884                    res = R.string.no_microphone_permission;
1885                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1886                    res = R.string.no_camera_permission;
1887                } else {
1888                    res = R.string.no_storage_permission;
1889                }
1890                Toast.makeText(
1891                                getActivity(),
1892                                getString(res, getString(R.string.app_name)),
1893                                Toast.LENGTH_SHORT)
1894                        .show();
1895            }
1896        }
1897        if (writeGranted(grantResults, permissions)) {
1898            if (activity != null && activity.xmppConnectionService != null) {
1899                activity.xmppConnectionService.getBitmapCache().evictAll();
1900                activity.xmppConnectionService.restartFileObserver();
1901            }
1902            refresh();
1903        }
1904        if (cameraGranted(grantResults, permissions) || audioGranted(grantResults, permissions)) {
1905            XmppConnectionService.toggleForegroundService(activity);
1906        }
1907    }
1908
1909    public void startDownloadable(Message message) {
1910        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1911            this.mPendingDownloadableMessage = message;
1912            return;
1913        }
1914        Transferable transferable = message.getTransferable();
1915        if (transferable != null) {
1916            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1917                createNewConnection(message);
1918                return;
1919            }
1920            if (!transferable.start()) {
1921                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1922                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1923                        .show();
1924            }
1925        } else if (message.treatAsDownloadable()
1926                || message.hasFileOnRemoteHost()
1927                || MessageUtils.unInitiatedButKnownSize(message)) {
1928            createNewConnection(message);
1929        } else {
1930            Log.d(
1931                    Config.LOGTAG,
1932                    message.getConversation().getAccount() + ": unable to start downloadable");
1933        }
1934    }
1935
1936    private void createNewConnection(final Message message) {
1937        if (!activity.xmppConnectionService.hasInternetConnection()) {
1938            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1939                    .show();
1940            return;
1941        }
1942        activity.xmppConnectionService
1943                .getHttpConnectionManager()
1944                .createNewDownloadConnection(message, true);
1945    }
1946
1947    @SuppressLint("InflateParams")
1948    protected void clearHistoryDialog(final Conversation conversation) {
1949        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
1950        builder.setTitle(R.string.clear_conversation_history);
1951        final View dialogView =
1952                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1953        final CheckBox endConversationCheckBox =
1954                dialogView.findViewById(R.id.end_conversation_checkbox);
1955        builder.setView(dialogView);
1956        builder.setNegativeButton(getString(R.string.cancel), null);
1957        builder.setPositiveButton(
1958                getString(R.string.confirm),
1959                (dialog, which) -> {
1960                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
1961                    if (endConversationCheckBox.isChecked()) {
1962                        this.activity.xmppConnectionService.archiveConversation(conversation);
1963                        this.activity.onConversationArchived(conversation);
1964                    } else {
1965                        activity.onConversationsListItemUpdated();
1966                        refresh();
1967                    }
1968                });
1969        builder.create().show();
1970    }
1971
1972    protected void muteConversationDialog(final Conversation conversation) {
1973        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
1974        builder.setTitle(R.string.disable_notifications);
1975        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1976        final CharSequence[] labels = new CharSequence[durations.length];
1977        for (int i = 0; i < durations.length; ++i) {
1978            if (durations[i] == -1) {
1979                labels[i] = getString(R.string.until_further_notice);
1980            } else {
1981                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
1982            }
1983        }
1984        builder.setItems(
1985                labels,
1986                (dialog, which) -> {
1987                    final long till;
1988                    if (durations[which] == -1) {
1989                        till = Long.MAX_VALUE;
1990                    } else {
1991                        till = System.currentTimeMillis() + (durations[which] * 1000L);
1992                    }
1993                    conversation.setMutedTill(till);
1994                    activity.xmppConnectionService.updateConversation(conversation);
1995                    activity.onConversationsListItemUpdated();
1996                    refresh();
1997                    requireActivity().invalidateOptionsMenu();
1998                });
1999        builder.create().show();
2000    }
2001
2002    private boolean hasPermissions(int requestCode, List<String> permissions) {
2003        final List<String> missingPermissions = new ArrayList<>();
2004        for (String permission : permissions) {
2005            if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU || Config.ONLY_INTERNAL_STORAGE) && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2006                continue;
2007            }
2008            if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2009                missingPermissions.add(permission);
2010            }
2011        }
2012        if (missingPermissions.size() == 0) {
2013            return true;
2014        } else {
2015            requestPermissions(
2016                    missingPermissions.toArray(new String[0]),
2017                    requestCode);
2018            return false;
2019        }
2020    }
2021
2022    private boolean hasPermissions(int requestCode, String... permissions) {
2023        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2024    }
2025
2026    public void unMuteConversation(final Conversation conversation) {
2027        conversation.setMutedTill(0);
2028        this.activity.xmppConnectionService.updateConversation(conversation);
2029        this.activity.onConversationsListItemUpdated();
2030        refresh();
2031        requireActivity().invalidateOptionsMenu();
2032    }
2033
2034    protected void invokeAttachFileIntent(final int attachmentChoice) {
2035        Intent intent = new Intent();
2036        boolean chooser = false;
2037        switch (attachmentChoice) {
2038            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2039                intent.setAction(Intent.ACTION_GET_CONTENT);
2040                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2041                intent.setType("image/*");
2042                chooser = true;
2043                break;
2044            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2045                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2046                break;
2047            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2048                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2049                pendingTakePhotoUri.push(uri);
2050                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2051                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2052                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2053                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2054                break;
2055            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2056                chooser = true;
2057                intent.setType("*/*");
2058                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2059                intent.addCategory(Intent.CATEGORY_OPENABLE);
2060                intent.setAction(Intent.ACTION_GET_CONTENT);
2061                break;
2062            case ATTACHMENT_CHOICE_RECORD_VOICE:
2063                intent = new Intent(getActivity(), RecordingActivity.class);
2064                break;
2065            case ATTACHMENT_CHOICE_LOCATION:
2066                intent = GeoHelper.getFetchIntent(activity);
2067                break;
2068        }
2069        final Context context = getActivity();
2070        if (context == null) {
2071            return;
2072        }
2073        try {
2074            if (chooser) {
2075                startActivityForResult(
2076                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2077                        attachmentChoice);
2078            } else {
2079                startActivityForResult(intent, attachmentChoice);
2080            }
2081        } catch (final ActivityNotFoundException e) {
2082            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2083        }
2084    }
2085
2086    @Override
2087    public void onResume() {
2088        super.onResume();
2089        binding.messagesView.post(this::fireReadEvent);
2090    }
2091
2092    private void fireReadEvent() {
2093        if (activity != null && this.conversation != null) {
2094            String uuid = getLastVisibleMessageUuid();
2095            if (uuid != null) {
2096                activity.onConversationRead(this.conversation, uuid);
2097            }
2098        }
2099    }
2100
2101    private String getLastVisibleMessageUuid() {
2102        if (binding == null) {
2103            return null;
2104        }
2105        synchronized (this.messageList) {
2106            int pos = binding.messagesView.getLastVisiblePosition();
2107            if (pos >= 0) {
2108                Message message = null;
2109                for (int i = pos; i >= 0; --i) {
2110                    try {
2111                        message = (Message) binding.messagesView.getItemAtPosition(i);
2112                    } catch (IndexOutOfBoundsException e) {
2113                        // should not happen if we synchronize properly. however if that fails we
2114                        // just gonna try item -1
2115                        continue;
2116                    }
2117                    if (message.getType() != Message.TYPE_STATUS) {
2118                        break;
2119                    }
2120                }
2121                if (message != null) {
2122                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2123                        message = message.next();
2124                    }
2125                    return message.getUuid();
2126                }
2127            }
2128        }
2129        return null;
2130    }
2131
2132    private void openWith(final Message message) {
2133        if (message.isGeoUri()) {
2134            GeoHelper.view(getActivity(), message);
2135        } else {
2136            final DownloadableFile file =
2137                    activity.xmppConnectionService.getFileBackend().getFile(message);
2138            ViewUtil.view(activity, file);
2139        }
2140    }
2141
2142    private void addReaction(final Message message) {
2143        activity.addReaction(message, reactions -> {
2144            if (activity.xmppConnectionService.sendReactions(message, reactions)) {
2145                return;
2146            }
2147            Toast.makeText(activity, R.string.could_not_add_reaction, Toast.LENGTH_LONG).show();
2148        });
2149    }
2150
2151    private void reportMessage(final Message message) {
2152        BlockContactDialog.show(activity, conversation.getContact(), message.getServerMsgId());
2153    }
2154
2155    private void showErrorMessage(final Message message) {
2156        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
2157        builder.setTitle(R.string.error_message);
2158        final String errorMessage = message.getErrorMessage();
2159        final String[] errorMessageParts =
2160                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2161        final String displayError;
2162        if (errorMessageParts.length == 2) {
2163            displayError = errorMessageParts[1];
2164        } else {
2165            displayError = errorMessage;
2166        }
2167        builder.setMessage(displayError);
2168        builder.setNegativeButton(
2169                R.string.copy_to_clipboard,
2170                (dialog, which) -> {
2171                    activity.copyTextToClipboard(displayError, R.string.error_message);
2172                    Toast.makeText(
2173                                    activity,
2174                                    R.string.error_message_copied_to_clipboard,
2175                                    Toast.LENGTH_SHORT)
2176                            .show();
2177                });
2178        builder.setPositiveButton(R.string.confirm, null);
2179        builder.create().show();
2180    }
2181
2182    private void deleteFile(final Message message) {
2183        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
2184        builder.setNegativeButton(R.string.cancel, null);
2185        builder.setTitle(R.string.delete_file_dialog);
2186        builder.setMessage(R.string.delete_file_dialog_msg);
2187        builder.setPositiveButton(
2188                R.string.confirm,
2189                (dialog, which) -> {
2190                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2191                        message.setDeleted(true);
2192                        activity.xmppConnectionService.evictPreview(message.getUuid());
2193                        activity.xmppConnectionService.updateMessage(message, false);
2194                        activity.onConversationsListItemUpdated();
2195                        refresh();
2196                    }
2197                });
2198        builder.create().show();
2199    }
2200
2201    private void resendMessage(final Message message) {
2202        if (message.isFileOrImage()) {
2203            if (!(message.getConversation() instanceof Conversation)) {
2204                return;
2205            }
2206            final Conversation conversation = (Conversation) message.getConversation();
2207            final DownloadableFile file =
2208                    activity.xmppConnectionService.getFileBackend().getFile(message);
2209            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2210                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2211                if (!message.hasFileOnRemoteHost()
2212                        && xmppConnection != null
2213                        && conversation.getMode() == Conversational.MODE_SINGLE
2214                        && !xmppConnection
2215                                .getFeatures()
2216                                .httpUpload(message.getFileParams().getSize())) {
2217                    activity.selectPresence(
2218                            conversation,
2219                            () -> {
2220                                message.setCounterpart(conversation.getNextCounterpart());
2221                                activity.xmppConnectionService.resendFailedMessages(message);
2222                                new Handler()
2223                                        .post(
2224                                                () -> {
2225                                                    int size = messageList.size();
2226                                                    this.binding.messagesView.setSelection(
2227                                                            size - 1);
2228                                                });
2229                            });
2230                    return;
2231                }
2232            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2233                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2234                return;
2235            } else {
2236                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2237                message.setDeleted(true);
2238                activity.xmppConnectionService.updateMessage(message, false);
2239                activity.onConversationsListItemUpdated();
2240                refresh();
2241                return;
2242            }
2243        }
2244        activity.xmppConnectionService.resendFailedMessages(message);
2245        new Handler()
2246                .post(
2247                        () -> {
2248                            int size = messageList.size();
2249                            this.binding.messagesView.setSelection(size - 1);
2250                        });
2251    }
2252
2253    private void cancelTransmission(Message message) {
2254        Transferable transferable = message.getTransferable();
2255        if (transferable != null) {
2256            transferable.cancel();
2257        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2258            activity.xmppConnectionService.markMessage(
2259                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2260        }
2261    }
2262
2263    private void retryDecryption(Message message) {
2264        message.setEncryption(Message.ENCRYPTION_PGP);
2265        activity.onConversationsListItemUpdated();
2266        refresh();
2267        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2268    }
2269
2270    public void privateMessageWith(final Jid counterpart) {
2271        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2272            activity.xmppConnectionService.sendChatState(conversation);
2273        }
2274        this.binding.textinput.setText("");
2275        this.conversation.setNextCounterpart(counterpart);
2276        updateChatMsgHint();
2277        updateSendButton();
2278        updateEditablity();
2279    }
2280
2281    private void correctMessage(Message message) {
2282        while (message.mergeable(message.next())) {
2283            message = message.next();
2284        }
2285        this.conversation.setCorrectingMessage(message);
2286        final Editable editable = binding.textinput.getText();
2287        this.conversation.setDraftMessage(editable.toString());
2288        this.binding.textinput.setText("");
2289        this.binding.textinput.append(message.getBody());
2290    }
2291
2292    private void highlightInConference(String nick) {
2293        final Editable editable = this.binding.textinput.getText();
2294        String oldString = editable.toString().trim();
2295        final int pos = this.binding.textinput.getSelectionStart();
2296        if (oldString.isEmpty() || pos == 0) {
2297            editable.insert(0, nick + ": ");
2298        } else {
2299            final char before = editable.charAt(pos - 1);
2300            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2301            if (before == '\n') {
2302                editable.insert(pos, nick + ": ");
2303            } else {
2304                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2305                    if (NickValidityChecker.check(
2306                            conversation,
2307                            Arrays.asList(
2308                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2309                        editable.insert(pos - 2, ", " + nick);
2310                        return;
2311                    }
2312                }
2313                editable.insert(
2314                        pos,
2315                        (Character.isWhitespace(before) ? "" : " ")
2316                                + nick
2317                                + (Character.isWhitespace(after) ? "" : " "));
2318                if (Character.isWhitespace(after)) {
2319                    this.binding.textinput.setSelection(
2320                            this.binding.textinput.getSelectionStart() + 1);
2321                }
2322            }
2323        }
2324    }
2325
2326    @Override
2327    public void startActivityForResult(Intent intent, int requestCode) {
2328        final Activity activity = getActivity();
2329        if (activity instanceof ConversationsActivity) {
2330            ((ConversationsActivity) activity).clearPendingViewIntent();
2331        }
2332        super.startActivityForResult(intent, requestCode);
2333    }
2334
2335    @Override
2336    public void onSaveInstanceState(@NonNull Bundle outState) {
2337        super.onSaveInstanceState(outState);
2338        if (conversation != null) {
2339            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2340            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2341            final Uri uri = pendingTakePhotoUri.peek();
2342            if (uri != null) {
2343                outState.putString(STATE_PHOTO_URI, uri.toString());
2344            }
2345            final ScrollState scrollState = getScrollPosition();
2346            if (scrollState != null) {
2347                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2348            }
2349            final ArrayList<Attachment> attachments =
2350                    mediaPreviewAdapter == null
2351                            ? new ArrayList<>()
2352                            : mediaPreviewAdapter.getAttachments();
2353            if (attachments.size() > 0) {
2354                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2355            }
2356        }
2357    }
2358
2359    @Override
2360    public void onActivityCreated(Bundle savedInstanceState) {
2361        super.onActivityCreated(savedInstanceState);
2362        if (savedInstanceState == null) {
2363            return;
2364        }
2365        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2366        ArrayList<Attachment> attachments =
2367                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2368        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2369        if (uuid != null) {
2370            QuickLoader.set(uuid);
2371            this.pendingConversationsUuid.push(uuid);
2372            if (attachments != null && attachments.size() > 0) {
2373                this.pendingMediaPreviews.push(attachments);
2374            }
2375            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2376            if (takePhotoUri != null) {
2377                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2378            }
2379            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2380        }
2381    }
2382
2383    @Override
2384    public void onStart() {
2385        super.onStart();
2386        if (this.reInitRequiredOnStart && this.conversation != null) {
2387            final Bundle extras = pendingExtras.pop();
2388            reInit(this.conversation, extras != null);
2389            if (extras != null) {
2390                processExtras(extras);
2391            }
2392        } else if (conversation == null
2393                && activity != null
2394                && activity.xmppConnectionService != null) {
2395            final String uuid = pendingConversationsUuid.pop();
2396            Log.d(
2397                    Config.LOGTAG,
2398                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2399                            + uuid);
2400            if (uuid != null) {
2401                findAndReInitByUuidOrArchive(uuid);
2402            }
2403        }
2404    }
2405
2406    @Override
2407    public void onStop() {
2408        super.onStop();
2409        final Activity activity = getActivity();
2410        messageListAdapter.unregisterListenerInAudioPlayer();
2411        if (activity == null || !activity.isChangingConfigurations()) {
2412            hideSoftKeyboard(activity);
2413            messageListAdapter.stopAudioPlayer();
2414        }
2415        if (this.conversation != null) {
2416            final String msg = this.binding.textinput.getText().toString();
2417            storeNextMessage(msg);
2418            updateChatState(this.conversation, msg);
2419            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2420        }
2421        this.reInitRequiredOnStart = true;
2422    }
2423
2424    private void updateChatState(final Conversation conversation, final String msg) {
2425        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2426        Account.State status = conversation.getAccount().getStatus();
2427        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2428            activity.xmppConnectionService.sendChatState(conversation);
2429        }
2430    }
2431
2432    private void saveMessageDraftStopAudioPlayer() {
2433        final Conversation previousConversation = this.conversation;
2434        if (this.activity == null || this.binding == null || previousConversation == null) {
2435            return;
2436        }
2437        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2438        final String msg = this.binding.textinput.getText().toString();
2439        storeNextMessage(msg);
2440        updateChatState(this.conversation, msg);
2441        messageListAdapter.stopAudioPlayer();
2442        mediaPreviewAdapter.clearPreviews();
2443        toggleInputMethod();
2444    }
2445
2446    public void reInit(final Conversation conversation, final Bundle extras) {
2447        QuickLoader.set(conversation.getUuid());
2448        final boolean changedConversation = this.conversation != conversation;
2449        if (changedConversation) {
2450            this.saveMessageDraftStopAudioPlayer();
2451        }
2452        this.clearPending();
2453        if (this.reInit(conversation, extras != null)) {
2454            if (extras != null) {
2455                processExtras(extras);
2456            }
2457            this.reInitRequiredOnStart = false;
2458        } else {
2459            this.reInitRequiredOnStart = true;
2460            pendingExtras.push(extras);
2461        }
2462        resetUnreadMessagesCount();
2463    }
2464
2465    private void reInit(Conversation conversation) {
2466        reInit(conversation, false);
2467    }
2468
2469    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2470        if (conversation == null) {
2471            return false;
2472        }
2473        this.conversation = conversation;
2474        // once we set the conversation all is good and it will automatically do the right thing in
2475        // onStart()
2476        if (this.activity == null || this.binding == null) {
2477            return false;
2478        }
2479
2480        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2481            activity.onConversationArchived(this.conversation);
2482            return false;
2483        }
2484
2485        stopScrolling();
2486        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2487
2488        if (this.conversation.isRead() && hasExtras) {
2489            Log.d(Config.LOGTAG, "trimming conversation");
2490            this.conversation.trim();
2491        }
2492
2493        setupIme();
2494
2495        final boolean scrolledToBottomAndNoPending =
2496                this.scrolledToBottom() && pendingScrollState.peek() == null;
2497
2498        this.binding.textSendButton.setContentDescription(
2499                activity.getString(R.string.send_message_to_x, conversation.getName()));
2500        this.binding.textinput.setKeyboardListener(null);
2501        final boolean participating =
2502                conversation.getMode() == Conversational.MODE_SINGLE
2503                        || conversation.getMucOptions().participating();
2504        if (participating) {
2505            this.binding.textinput.setText(this.conversation.getNextMessage());
2506            this.binding.textinput.setSelection(this.binding.textinput.length());
2507        } else {
2508            this.binding.textinput.setText(MessageUtils.EMPTY_STRING);
2509        }
2510        this.binding.textinput.setKeyboardListener(this);
2511        messageListAdapter.updatePreferences();
2512        refresh(false);
2513        activity.invalidateOptionsMenu();
2514        this.conversation.messagesLoaded.set(true);
2515        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2516
2517        if (hasExtras || scrolledToBottomAndNoPending) {
2518            resetUnreadMessagesCount();
2519            synchronized (this.messageList) {
2520                Log.d(Config.LOGTAG, "jump to first unread message");
2521                final Message first = conversation.getFirstUnreadMessage();
2522                final int bottom = Math.max(0, this.messageList.size() - 1);
2523                final int pos;
2524                final boolean jumpToBottom;
2525                if (first == null) {
2526                    pos = bottom;
2527                    jumpToBottom = true;
2528                } else {
2529                    int i = getIndexOf(first.getUuid(), this.messageList);
2530                    pos = i < 0 ? bottom : i;
2531                    jumpToBottom = false;
2532                }
2533                setSelection(pos, jumpToBottom);
2534            }
2535        }
2536
2537        this.binding.messagesView.post(this::fireReadEvent);
2538        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2539        // layout which might be unnecessary since we can *see* it
2540        activity.xmppConnectionService
2541                .getNotificationService()
2542                .setOpenConversation(this.conversation);
2543        return true;
2544    }
2545
2546    private void resetUnreadMessagesCount() {
2547        lastMessageUuid = null;
2548        hideUnreadMessagesCount();
2549    }
2550
2551    private void hideUnreadMessagesCount() {
2552        if (this.binding == null) {
2553            return;
2554        }
2555        this.binding.scrollToBottomButton.setEnabled(false);
2556        this.binding.scrollToBottomButton.hide();
2557        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2558    }
2559
2560    private void setSelection(int pos, boolean jumpToBottom) {
2561        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2562        this.binding.messagesView.post(
2563                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2564        this.binding.messagesView.post(this::fireReadEvent);
2565    }
2566
2567    private boolean scrolledToBottom() {
2568        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2569    }
2570
2571    private void processExtras(final Bundle extras) {
2572        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2573        final String text = extras.getString(Intent.EXTRA_TEXT);
2574        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2575        final String postInitAction =
2576                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2577        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2578        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2579        final boolean doNotAppend =
2580                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2581        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2582        final List<Uri> uris = extractUris(extras);
2583        if (uris != null && uris.size() > 0) {
2584            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2585                mediaPreviewAdapter.addMediaPreviews(
2586                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2587            } else {
2588                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2589                mediaPreviewAdapter.addMediaPreviews(
2590                        Attachment.of(getActivity(), cleanedUris, type));
2591            }
2592            toggleInputMethod();
2593            return;
2594        }
2595        if (nick != null) {
2596            if (pm) {
2597                Jid jid = conversation.getJid();
2598                try {
2599                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2600                    privateMessageWith(next);
2601                } catch (final IllegalArgumentException ignored) {
2602                    // do nothing
2603                }
2604            } else {
2605                final MucOptions mucOptions = conversation.getMucOptions();
2606                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2607                    highlightInConference(nick);
2608                }
2609            }
2610        } else {
2611            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2612                mediaPreviewAdapter.addMediaPreviews(
2613                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2614                toggleInputMethod();
2615                return;
2616            } else if (text != null && asQuote) {
2617                quoteText(text);
2618            } else {
2619                appendText(text, doNotAppend);
2620            }
2621        }
2622        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2623            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2624            return;
2625        }
2626        final Message message =
2627                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2628        if (message != null) {
2629            startDownloadable(message);
2630        }
2631    }
2632
2633    private List<Uri> extractUris(final Bundle extras) {
2634        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2635        if (uris != null) {
2636            return uris;
2637        }
2638        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2639        if (uri != null) {
2640            return Collections.singletonList(uri);
2641        } else {
2642            return null;
2643        }
2644    }
2645
2646    private List<Uri> cleanUris(final List<Uri> uris) {
2647        final Iterator<Uri> iterator = uris.iterator();
2648        while (iterator.hasNext()) {
2649            final Uri uri = iterator.next();
2650            if (FileBackend.dangerousFile(uri)) {
2651                iterator.remove();
2652                Toast.makeText(
2653                                requireActivity(),
2654                                R.string.security_violation_not_attaching_file,
2655                                Toast.LENGTH_SHORT)
2656                        .show();
2657            }
2658        }
2659        return uris;
2660    }
2661
2662    private boolean showBlockSubmenu(View view) {
2663        final Jid jid = conversation.getJid();
2664        final boolean showReject =
2665                !conversation.isWithStranger()
2666                        && conversation
2667                                .getContact()
2668                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2669        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2670        popupMenu.inflate(R.menu.block);
2671        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2672        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2673        popupMenu.setOnMenuItemClickListener(
2674                menuItem -> {
2675                    Blockable blockable;
2676                    switch (menuItem.getItemId()) {
2677                        case R.id.reject:
2678                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2679                                    conversation.getContact());
2680                            updateSnackBar(conversation);
2681                            return true;
2682                        case R.id.block_domain:
2683                            blockable =
2684                                    conversation
2685                                            .getAccount()
2686                                            .getRoster()
2687                                            .getContact(jid.getDomain());
2688                            break;
2689                        default:
2690                            blockable = conversation;
2691                    }
2692                    BlockContactDialog.show(activity, blockable);
2693                    return true;
2694                });
2695        popupMenu.show();
2696        return true;
2697    }
2698
2699    private void updateSnackBar(final Conversation conversation) {
2700        final Account account = conversation.getAccount();
2701        final XmppConnection connection = account.getXmppConnection();
2702        final int mode = conversation.getMode();
2703        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2704        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2705            return;
2706        }
2707        if (account.getStatus() == Account.State.DISABLED) {
2708            showSnackbar(
2709                    R.string.this_account_is_disabled,
2710                    R.string.enable,
2711                    this.mEnableAccountListener);
2712        } else if (account.getStatus() == Account.State.LOGGED_OUT) {
2713            showSnackbar(R.string.this_account_is_logged_out,R.string.log_in,this.mEnableAccountListener);
2714        } else if (conversation.isBlocked()) {
2715            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2716        } else if (contact != null
2717                && !contact.showInRoster()
2718                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2719            showSnackbar(
2720                    R.string.contact_added_you,
2721                    R.string.add_back,
2722                    this.mAddBackClickListener,
2723                    this.mLongPressBlockListener);
2724        } else if (contact != null
2725                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2726            showSnackbar(
2727                    R.string.contact_asks_for_presence_subscription,
2728                    R.string.allow,
2729                    this.mAllowPresenceSubscription,
2730                    this.mLongPressBlockListener);
2731        } else if (mode == Conversation.MODE_MULTI
2732                && !conversation.getMucOptions().online()
2733                && account.getStatus() == Account.State.ONLINE) {
2734            switch (conversation.getMucOptions().getError()) {
2735                case NICK_IN_USE:
2736                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2737                    break;
2738                case NO_RESPONSE:
2739                    showSnackbar(R.string.joining_conference, 0, null);
2740                    break;
2741                case SERVER_NOT_FOUND:
2742                    if (conversation.receivedMessagesCount() > 0) {
2743                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2744                    } else {
2745                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2746                    }
2747                    break;
2748                case REMOTE_SERVER_TIMEOUT:
2749                    if (conversation.receivedMessagesCount() > 0) {
2750                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2751                    } else {
2752                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2753                    }
2754                    break;
2755                case PASSWORD_REQUIRED:
2756                    showSnackbar(
2757                            R.string.conference_requires_password,
2758                            R.string.enter_password,
2759                            enterPassword);
2760                    break;
2761                case BANNED:
2762                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2763                    break;
2764                case MEMBERS_ONLY:
2765                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2766                    break;
2767                case RESOURCE_CONSTRAINT:
2768                    showSnackbar(
2769                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2770                    break;
2771                case KICKED:
2772                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2773                    break;
2774                case TECHNICAL_PROBLEMS:
2775                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
2776                    break;
2777                case UNKNOWN:
2778                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2779                    break;
2780                case INVALID_NICK:
2781                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2782                case SHUTDOWN:
2783                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2784                    break;
2785                case DESTROYED:
2786                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2787                    break;
2788                case NON_ANONYMOUS:
2789                    showSnackbar(
2790                            R.string.group_chat_will_make_your_jabber_id_public,
2791                            R.string.join,
2792                            acceptJoin);
2793                    break;
2794                default:
2795                    hideSnackbar();
2796                    break;
2797            }
2798        } else if (account.hasPendingPgpIntent(conversation)) {
2799            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2800        } else if (connection != null
2801                && connection.getFeatures().blocking()
2802                && conversation.countMessages() != 0
2803                && !conversation.isBlocked()
2804                && conversation.isWithStranger()) {
2805            showSnackbar(
2806                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2807        } else {
2808            hideSnackbar();
2809        }
2810    }
2811
2812    @Override
2813    public void refresh() {
2814        if (this.binding == null) {
2815            Log.d(
2816                    Config.LOGTAG,
2817                    "ConversationFragment.refresh() skipped updated because view binding was null");
2818            return;
2819        }
2820        if (this.conversation != null
2821                && this.activity != null
2822                && this.activity.xmppConnectionService != null) {
2823            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2824                activity.onConversationArchived(this.conversation);
2825                return;
2826            }
2827        }
2828        this.refresh(true);
2829    }
2830
2831    private void refresh(boolean notifyConversationRead) {
2832        synchronized (this.messageList) {
2833            if (this.conversation != null) {
2834                conversation.populateWithMessages(this.messageList);
2835                updateSnackBar(conversation);
2836                updateStatusMessages();
2837                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2838                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2839                    binding.unreadCountCustomView.setUnreadCount(
2840                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2841                }
2842                this.messageListAdapter.notifyDataSetChanged();
2843                updateChatMsgHint();
2844                if (notifyConversationRead && activity != null) {
2845                    binding.messagesView.post(this::fireReadEvent);
2846                }
2847                updateSendButton();
2848                updateEditablity();
2849            }
2850        }
2851    }
2852
2853    protected void messageSent() {
2854        mSendingPgpMessage.set(false);
2855        this.binding.textinput.setText("");
2856        if (conversation.setCorrectingMessage(null)) {
2857            this.binding.textinput.append(conversation.getDraftMessage());
2858            conversation.setDraftMessage(null);
2859        }
2860        storeNextMessage();
2861        updateChatMsgHint();
2862        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2863        final boolean prefScrollToBottom =
2864                p.getBoolean(
2865                        "scroll_to_bottom",
2866                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2867        if (prefScrollToBottom || scrolledToBottom()) {
2868            new Handler()
2869                    .post(
2870                            () -> {
2871                                int size = messageList.size();
2872                                this.binding.messagesView.setSelection(size - 1);
2873                            });
2874        }
2875    }
2876
2877    private boolean storeNextMessage() {
2878        return storeNextMessage(this.binding.textinput.getText().toString());
2879    }
2880
2881    private boolean storeNextMessage(String msg) {
2882        final boolean participating =
2883                conversation.getMode() == Conversational.MODE_SINGLE
2884                        || conversation.getMucOptions().participating();
2885        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
2886                && participating
2887                && this.conversation.setNextMessage(msg)) {
2888            this.activity.xmppConnectionService.updateConversation(this.conversation);
2889            return true;
2890        }
2891        return false;
2892    }
2893
2894    public void doneSendingPgpMessage() {
2895        mSendingPgpMessage.set(false);
2896    }
2897
2898    public long getMaxHttpUploadSize(Conversation conversation) {
2899        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2900        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2901    }
2902
2903    private void updateEditablity() {
2904        boolean canWrite =
2905                this.conversation.getMode() == Conversation.MODE_SINGLE
2906                        || this.conversation.getMucOptions().participating()
2907                        || this.conversation.getNextCounterpart() != null;
2908        this.binding.textinput.setFocusable(canWrite);
2909        this.binding.textinput.setFocusableInTouchMode(canWrite);
2910        this.binding.textSendButton.setEnabled(canWrite);
2911        this.binding.textinput.setCursorVisible(canWrite);
2912        this.binding.textinput.setEnabled(canWrite);
2913    }
2914
2915    public void updateSendButton() {
2916        boolean hasAttachments =
2917                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2918        final Conversation c = this.conversation;
2919        final Presence.Status status;
2920        final String text =
2921                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2922        final SendButtonAction action;
2923        if (hasAttachments) {
2924            action = SendButtonAction.TEXT;
2925        } else {
2926            action = SendButtonTool.getAction(getActivity(), c, text);
2927        }
2928        if (c.getAccount().getStatus() == Account.State.ONLINE) {
2929            if (activity != null
2930                    && activity.xmppConnectionService != null
2931                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2932                status = Presence.Status.OFFLINE;
2933            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2934                status = c.getContact().getShownStatus();
2935            } else {
2936                status =
2937                        c.getMucOptions().online()
2938                                ? Presence.Status.ONLINE
2939                                : Presence.Status.OFFLINE;
2940            }
2941        } else {
2942            status = Presence.Status.OFFLINE;
2943        }
2944        this.binding.textSendButton.setTag(action);
2945        this.binding.textSendButton.setIconResource(SendButtonTool.getSendButtonImageResource(action));
2946        this.binding.textSendButton.setIconTint(ColorStateList.valueOf(SendButtonTool.getSendButtonColor(this.binding.textSendButton, status)));
2947        // TODO send button color
2948        final Activity activity = getActivity();
2949        if (activity != null) {
2950        }
2951    }
2952
2953    protected void updateStatusMessages() {
2954        DateSeparator.addAll(this.messageList);
2955        if (showLoadMoreMessages(conversation)) {
2956            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2957        }
2958        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2959            ChatState state = conversation.getIncomingChatState();
2960            if (state == ChatState.COMPOSING) {
2961                this.messageList.add(
2962                        Message.createStatusMessage(
2963                                conversation,
2964                                getString(R.string.contact_is_typing, conversation.getName())));
2965            } else if (state == ChatState.PAUSED) {
2966                this.messageList.add(
2967                        Message.createStatusMessage(
2968                                conversation,
2969                                getString(
2970                                        R.string.contact_has_stopped_typing,
2971                                        conversation.getName())));
2972            } else {
2973                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2974                    final Message message = this.messageList.get(i);
2975                    if (message.getType() != Message.TYPE_STATUS) {
2976                        if (message.getStatus() == Message.STATUS_RECEIVED) {
2977                            return;
2978                        } else {
2979                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2980                                this.messageList.add(
2981                                        i + 1,
2982                                        Message.createStatusMessage(
2983                                                conversation,
2984                                                getString(
2985                                                        R.string.contact_has_read_up_to_this_point,
2986                                                        conversation.getName())));
2987                                return;
2988                            }
2989                        }
2990                    }
2991                }
2992            }
2993        } else {
2994            final MucOptions mucOptions = conversation.getMucOptions();
2995            final List<MucOptions.User> allUsers = mucOptions.getUsers();
2996            final Set<ReadByMarker> addedMarkers = new HashSet<>();
2997            ChatState state = ChatState.COMPOSING;
2998            List<MucOptions.User> users =
2999                    conversation.getMucOptions().getUsersWithChatState(state, 5);
3000            if (users.size() == 0) {
3001                state = ChatState.PAUSED;
3002                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3003            }
3004            if (mucOptions.isPrivateAndNonAnonymous()) {
3005                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3006                    final Set<ReadByMarker> markersForMessage =
3007                            messageList.get(i).getReadByMarkers();
3008                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3009                    for (ReadByMarker marker : markersForMessage) {
3010                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3011                            addedMarkers.add(
3012                                    marker); // may be put outside this condition. set should do
3013                                             // dedup anyway
3014                            MucOptions.User user = mucOptions.findUser(marker);
3015                            if (user != null && !users.contains(user)) {
3016                                shownMarkers.add(user);
3017                            }
3018                        }
3019                    }
3020                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3021                    final Message statusMessage;
3022                    final int size = shownMarkers.size();
3023                    if (size > 1) {
3024                        final String body;
3025                        if (size <= 4) {
3026                            body =
3027                                    getString(
3028                                            R.string.contacts_have_read_up_to_this_point,
3029                                            UIHelper.concatNames(shownMarkers));
3030                        } else if (ReadByMarker.allUsersRepresented(
3031                                allUsers, markersForMessage, markerForSender)) {
3032                            body = getString(R.string.everyone_has_read_up_to_this_point);
3033                        } else {
3034                            body =
3035                                    getString(
3036                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3037                                            UIHelper.concatNames(shownMarkers, 3),
3038                                            size - 3);
3039                        }
3040                        statusMessage = Message.createStatusMessage(conversation, body);
3041                        statusMessage.setCounterparts(shownMarkers);
3042                    } else if (size == 1) {
3043                        statusMessage =
3044                                Message.createStatusMessage(
3045                                        conversation,
3046                                        getString(
3047                                                R.string.contact_has_read_up_to_this_point,
3048                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3049                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3050                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3051                    } else {
3052                        statusMessage = null;
3053                    }
3054                    if (statusMessage != null) {
3055                        this.messageList.add(i + 1, statusMessage);
3056                    }
3057                    addedMarkers.add(markerForSender);
3058                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3059                        break;
3060                    }
3061                }
3062            }
3063            if (users.size() > 0) {
3064                Message statusMessage;
3065                if (users.size() == 1) {
3066                    MucOptions.User user = users.get(0);
3067                    int id =
3068                            state == ChatState.COMPOSING
3069                                    ? R.string.contact_is_typing
3070                                    : R.string.contact_has_stopped_typing;
3071                    statusMessage =
3072                            Message.createStatusMessage(
3073                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3074                    statusMessage.setTrueCounterpart(user.getRealJid());
3075                    statusMessage.setCounterpart(user.getFullJid());
3076                } else {
3077                    int id =
3078                            state == ChatState.COMPOSING
3079                                    ? R.string.contacts_are_typing
3080                                    : R.string.contacts_have_stopped_typing;
3081                    statusMessage =
3082                            Message.createStatusMessage(
3083                                    conversation, getString(id, UIHelper.concatNames(users)));
3084                    statusMessage.setCounterparts(users);
3085                }
3086                this.messageList.add(statusMessage);
3087            }
3088        }
3089    }
3090
3091    private void stopScrolling() {
3092        long now = SystemClock.uptimeMillis();
3093        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3094        binding.messagesView.dispatchTouchEvent(cancel);
3095    }
3096
3097    private boolean showLoadMoreMessages(final Conversation c) {
3098        if (activity == null || activity.xmppConnectionService == null) {
3099            return false;
3100        }
3101        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3102        final MessageArchiveService service =
3103                activity.xmppConnectionService.getMessageArchiveService();
3104        return mam
3105                && (c.getLastClearHistory().getTimestamp() != 0
3106                        || (c.countMessages() == 0
3107                                && c.messagesLoaded.get()
3108                                && c.hasMessagesLeftOnServer()
3109                                && !service.queryInProgress(c)));
3110    }
3111
3112    private boolean hasMamSupport(final Conversation c) {
3113        if (c.getMode() == Conversation.MODE_SINGLE) {
3114            final XmppConnection connection = c.getAccount().getXmppConnection();
3115            return connection != null && connection.getFeatures().mam();
3116        } else {
3117            return c.getMucOptions().mamSupport();
3118        }
3119    }
3120
3121    protected void showSnackbar(
3122            final int message, final int action, final OnClickListener clickListener) {
3123        showSnackbar(message, action, clickListener, null);
3124    }
3125
3126    protected void showSnackbar(
3127            final int message,
3128            final int action,
3129            final OnClickListener clickListener,
3130            final View.OnLongClickListener longClickListener) {
3131        this.binding.snackbar.setVisibility(View.VISIBLE);
3132        this.binding.snackbar.setOnClickListener(null);
3133        this.binding.snackbarMessage.setText(message);
3134        this.binding.snackbarMessage.setOnClickListener(null);
3135        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3136        if (action != 0) {
3137            this.binding.snackbarAction.setText(action);
3138        }
3139        this.binding.snackbarAction.setOnClickListener(clickListener);
3140        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3141    }
3142
3143    protected void hideSnackbar() {
3144        this.binding.snackbar.setVisibility(View.GONE);
3145    }
3146
3147    protected void sendMessage(Message message) {
3148        activity.xmppConnectionService.sendMessage(message);
3149        messageSent();
3150    }
3151
3152    protected void sendPgpMessage(final Message message) {
3153        final XmppConnectionService xmppService = activity.xmppConnectionService;
3154        final Contact contact = message.getConversation().getContact();
3155        if (!activity.hasPgp()) {
3156            activity.showInstallPgpDialog();
3157            return;
3158        }
3159        if (conversation.getAccount().getPgpSignature() == null) {
3160            activity.announcePgp(
3161                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3162            return;
3163        }
3164        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3165            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3166        }
3167        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3168            if (contact.getPgpKeyId() != 0) {
3169                xmppService
3170                        .getPgpEngine()
3171                        .hasKey(
3172                                contact,
3173                                new UiCallback<Contact>() {
3174
3175                                    @Override
3176                                    public void userInputRequired(
3177                                            PendingIntent pi, Contact contact) {
3178                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3179                                    }
3180
3181                                    @Override
3182                                    public void success(Contact contact) {
3183                                        encryptTextMessage(message);
3184                                    }
3185
3186                                    @Override
3187                                    public void error(int error, Contact contact) {
3188                                        activity.runOnUiThread(
3189                                                () ->
3190                                                        Toast.makeText(
3191                                                                        activity,
3192                                                                        R.string
3193                                                                                .unable_to_connect_to_keychain,
3194                                                                        Toast.LENGTH_SHORT)
3195                                                                .show());
3196                                        mSendingPgpMessage.set(false);
3197                                    }
3198                                });
3199
3200            } else {
3201                showNoPGPKeyDialog(
3202                        false,
3203                        (dialog, which) -> {
3204                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3205                            xmppService.updateConversation(conversation);
3206                            message.setEncryption(Message.ENCRYPTION_NONE);
3207                            xmppService.sendMessage(message);
3208                            messageSent();
3209                        });
3210            }
3211        } else {
3212            if (conversation.getMucOptions().pgpKeysInUse()) {
3213                if (!conversation.getMucOptions().everybodyHasKeys()) {
3214                    Toast warning =
3215                            Toast.makeText(
3216                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3217                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3218                    warning.show();
3219                }
3220                encryptTextMessage(message);
3221            } else {
3222                showNoPGPKeyDialog(
3223                        true,
3224                        (dialog, which) -> {
3225                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3226                            message.setEncryption(Message.ENCRYPTION_NONE);
3227                            xmppService.updateConversation(conversation);
3228                            xmppService.sendMessage(message);
3229                            messageSent();
3230                        });
3231            }
3232        }
3233    }
3234
3235    public void encryptTextMessage(Message message) {
3236        activity.xmppConnectionService
3237                .getPgpEngine()
3238                .encrypt(
3239                        message,
3240                        new UiCallback<Message>() {
3241
3242                            @Override
3243                            public void userInputRequired(PendingIntent pi, Message message) {
3244                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3245                            }
3246
3247                            @Override
3248                            public void success(Message message) {
3249                                // TODO the following two call can be made before the callback
3250                                getActivity().runOnUiThread(() -> messageSent());
3251                            }
3252
3253                            @Override
3254                            public void error(final int error, Message message) {
3255                                getActivity()
3256                                        .runOnUiThread(
3257                                                () -> {
3258                                                    doneSendingPgpMessage();
3259                                                    Toast.makeText(
3260                                                                    getActivity(),
3261                                                                    error == 0
3262                                                                            ? R.string
3263                                                                                    .unable_to_connect_to_keychain
3264                                                                            : error,
3265                                                                    Toast.LENGTH_SHORT)
3266                                                            .show();
3267                                                });
3268                            }
3269                        });
3270    }
3271
3272    public void showNoPGPKeyDialog(final boolean plural, final DialogInterface.OnClickListener listener) {
3273        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
3274        if (plural) {
3275            builder.setTitle(getString(R.string.no_pgp_keys));
3276            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3277        } else {
3278            builder.setTitle(getString(R.string.no_pgp_key));
3279            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3280        }
3281        builder.setNegativeButton(getString(R.string.cancel), null);
3282        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3283        builder.create().show();
3284    }
3285
3286    public void appendText(String text, final boolean doNotAppend) {
3287        if (text == null) {
3288            return;
3289        }
3290        final Editable editable = this.binding.textinput.getText();
3291        String previous = editable == null ? "" : editable.toString();
3292        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3293            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3294                    .show();
3295            return;
3296        }
3297        if (UIHelper.isLastLineQuote(previous)) {
3298            text = '\n' + text;
3299        } else if (previous.length() != 0
3300                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3301            text = " " + text;
3302        }
3303        this.binding.textinput.append(text);
3304    }
3305
3306    @Override
3307    public boolean onEnterPressed(final boolean isCtrlPressed) {
3308        if (isCtrlPressed || enterIsSend()) {
3309            sendMessage();
3310            return true;
3311        }
3312        return false;
3313    }
3314
3315    private boolean enterIsSend() {
3316        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3317        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3318    }
3319
3320    public boolean onArrowUpCtrlPressed() {
3321        final Message lastEditableMessage =
3322                conversation == null ? null : conversation.getLastEditableMessage();
3323        if (lastEditableMessage != null) {
3324            correctMessage(lastEditableMessage);
3325            return true;
3326        } else {
3327            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3328                    .show();
3329            return false;
3330        }
3331    }
3332
3333    @Override
3334    public void onTypingStarted() {
3335        final XmppConnectionService service =
3336                activity == null ? null : activity.xmppConnectionService;
3337        if (service == null) {
3338            return;
3339        }
3340        final Account.State status = conversation.getAccount().getStatus();
3341        if (status == Account.State.ONLINE
3342                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3343            service.sendChatState(conversation);
3344        }
3345        runOnUiThread(this::updateSendButton);
3346    }
3347
3348    @Override
3349    public void onTypingStopped() {
3350        final XmppConnectionService service =
3351                activity == null ? null : activity.xmppConnectionService;
3352        if (service == null) {
3353            return;
3354        }
3355        final Account.State status = conversation.getAccount().getStatus();
3356        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3357            service.sendChatState(conversation);
3358        }
3359    }
3360
3361    @Override
3362    public void onTextDeleted() {
3363        final XmppConnectionService service =
3364                activity == null ? null : activity.xmppConnectionService;
3365        if (service == null) {
3366            return;
3367        }
3368        final Account.State status = conversation.getAccount().getStatus();
3369        if (status == Account.State.ONLINE
3370                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3371            service.sendChatState(conversation);
3372        }
3373        if (storeNextMessage()) {
3374            runOnUiThread(
3375                    () -> {
3376                        if (activity == null) {
3377                            return;
3378                        }
3379                        activity.onConversationsListItemUpdated();
3380                    });
3381        }
3382        runOnUiThread(this::updateSendButton);
3383    }
3384
3385    @Override
3386    public void onTextChanged() {
3387        if (conversation != null && conversation.getCorrectingMessage() != null) {
3388            runOnUiThread(this::updateSendButton);
3389        }
3390    }
3391
3392    @Override
3393    public boolean onTabPressed(boolean repeated) {
3394        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3395            return false;
3396        }
3397        if (repeated) {
3398            completionIndex++;
3399        } else {
3400            lastCompletionLength = 0;
3401            completionIndex = 0;
3402            final String content = this.binding.textinput.getText().toString();
3403            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3404            int start =
3405                    lastCompletionCursor > 0
3406                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3407                            : 0;
3408            firstWord = start == 0;
3409            incomplete = content.substring(start, lastCompletionCursor);
3410        }
3411        List<String> completions = new ArrayList<>();
3412        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3413            String name = user.getName();
3414            if (name != null && name.startsWith(incomplete)) {
3415                completions.add(name + (firstWord ? ": " : " "));
3416            }
3417        }
3418        Collections.sort(completions);
3419        if (completions.size() > completionIndex) {
3420            String completion = completions.get(completionIndex).substring(incomplete.length());
3421            this.binding
3422                    .textinput
3423                    .getEditableText()
3424                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3425            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3426            lastCompletionLength = completion.length();
3427        } else {
3428            completionIndex = -1;
3429            this.binding
3430                    .textinput
3431                    .getEditableText()
3432                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3433            lastCompletionLength = 0;
3434        }
3435        return true;
3436    }
3437
3438    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3439        try {
3440            getActivity()
3441                    .startIntentSenderForResult(
3442                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0, Compatibility.pgpStartIntentSenderOptions());
3443        } catch (final SendIntentException ignored) {
3444        }
3445    }
3446
3447    @Override
3448    public void onBackendConnected() {
3449        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3450        String uuid = pendingConversationsUuid.pop();
3451        if (uuid != null) {
3452            if (!findAndReInitByUuidOrArchive(uuid)) {
3453                return;
3454            }
3455        } else {
3456            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3457                clearPending();
3458                activity.onConversationArchived(conversation);
3459                return;
3460            }
3461        }
3462        ActivityResult activityResult = postponedActivityResult.pop();
3463        if (activityResult != null) {
3464            handleActivityResult(activityResult);
3465        }
3466        clearPending();
3467    }
3468
3469    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3470        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3471        if (conversation == null) {
3472            clearPending();
3473            activity.onConversationArchived(null);
3474            return false;
3475        }
3476        reInit(conversation);
3477        ScrollState scrollState = pendingScrollState.pop();
3478        String lastMessageUuid = pendingLastMessageUuid.pop();
3479        List<Attachment> attachments = pendingMediaPreviews.pop();
3480        if (scrollState != null) {
3481            setScrollPosition(scrollState, lastMessageUuid);
3482        }
3483        if (attachments != null && attachments.size() > 0) {
3484            Log.d(Config.LOGTAG, "had attachments on restore");
3485            mediaPreviewAdapter.addMediaPreviews(attachments);
3486            toggleInputMethod();
3487        }
3488        return true;
3489    }
3490
3491    private void clearPending() {
3492        if (postponedActivityResult.clear()) {
3493            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3494            if (pendingTakePhotoUri.clear()) {
3495                Log.e(Config.LOGTAG, "cleared pending photo uri");
3496            }
3497        }
3498        if (pendingScrollState.clear()) {
3499            Log.e(Config.LOGTAG, "cleared scroll state");
3500        }
3501        if (pendingConversationsUuid.clear()) {
3502            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3503        }
3504        if (pendingMediaPreviews.clear()) {
3505            Log.e(Config.LOGTAG, "cleared pending media previews");
3506        }
3507    }
3508
3509    public Conversation getConversation() {
3510        return conversation;
3511    }
3512
3513    @Override
3514    public void onContactPictureLongClicked(View v, final Message message) {
3515        final String fingerprint;
3516        if (message.getEncryption() == Message.ENCRYPTION_PGP
3517                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3518            fingerprint = "pgp";
3519        } else {
3520            fingerprint = message.getFingerprint();
3521        }
3522        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3523        final Contact contact = message.getContact();
3524        if (message.getStatus() <= Message.STATUS_RECEIVED
3525                && (contact == null || !contact.isSelf())) {
3526            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3527                final Jid cp = message.getCounterpart();
3528                if (cp == null || cp.isBareJid()) {
3529                    return;
3530                }
3531                final Jid tcp = message.getTrueCounterpart();
3532                final User userByRealJid =
3533                        tcp != null
3534                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3535                                : null;
3536                final User user =
3537                        userByRealJid != null
3538                                ? userByRealJid
3539                                : conversation.getMucOptions().findUserByFullJid(cp);
3540                popupMenu.inflate(R.menu.muc_details_context);
3541                final Menu menu = popupMenu.getMenu();
3542                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3543                        activity, menu, conversation, user);
3544                popupMenu.setOnMenuItemClickListener(
3545                        menuItem ->
3546                                MucDetailsContextMenuHelper.onContextItemSelected(
3547                                        menuItem, user, activity, fingerprint));
3548            } else {
3549                popupMenu.inflate(R.menu.one_on_one_context);
3550                popupMenu.setOnMenuItemClickListener(
3551                        item -> {
3552                            switch (item.getItemId()) {
3553                                case R.id.action_contact_details:
3554                                    activity.switchToContactDetails(
3555                                            message.getContact(), fingerprint);
3556                                    break;
3557                                case R.id.action_show_qr_code:
3558                                    activity.showQrCode(
3559                                            "xmpp:"
3560                                                    + message.getContact()
3561                                                            .getJid()
3562                                                            .asBareJid()
3563                                                            .toEscapedString());
3564                                    break;
3565                            }
3566                            return true;
3567                        });
3568            }
3569        } else {
3570            popupMenu.inflate(R.menu.account_context);
3571            final Menu menu = popupMenu.getMenu();
3572            menu.findItem(R.id.action_manage_accounts)
3573                    .setVisible(QuickConversationsService.isConversations());
3574            popupMenu.setOnMenuItemClickListener(
3575                    item -> {
3576                        final XmppActivity activity = this.activity;
3577                        if (activity == null) {
3578                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3579                            return true;
3580                        }
3581                        switch (item.getItemId()) {
3582                            case R.id.action_show_qr_code:
3583                                activity.showQrCode(conversation.getAccount().getShareableUri());
3584                                break;
3585                            case R.id.action_account_details:
3586                                activity.switchToAccount(
3587                                        message.getConversation().getAccount(), fingerprint);
3588                                break;
3589                            case R.id.action_manage_accounts:
3590                                AccountUtils.launchManageAccounts(activity);
3591                                break;
3592                        }
3593                        return true;
3594                    });
3595        }
3596        popupMenu.show();
3597    }
3598
3599    @Override
3600    public void onContactPictureClicked(Message message) {
3601        String fingerprint;
3602        if (message.getEncryption() == Message.ENCRYPTION_PGP
3603                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3604            fingerprint = "pgp";
3605        } else {
3606            fingerprint = message.getFingerprint();
3607        }
3608        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3609        if (received) {
3610            if (message.getConversation() instanceof Conversation
3611                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3612                Jid tcp = message.getTrueCounterpart();
3613                Jid user = message.getCounterpart();
3614                if (user != null && !user.isBareJid()) {
3615                    final MucOptions mucOptions =
3616                            ((Conversation) message.getConversation()).getMucOptions();
3617                    if (mucOptions.participating()
3618                            || ((Conversation) message.getConversation()).getNextCounterpart()
3619                                    != null) {
3620                        if (!mucOptions.isUserInRoom(user)
3621                                && mucOptions.findUserByRealJid(
3622                                                tcp == null ? null : tcp.asBareJid())
3623                                        == null) {
3624                            Toast.makeText(
3625                                            getActivity(),
3626                                            activity.getString(
3627                                                    R.string.user_has_left_conference,
3628                                                    user.getResource()),
3629                                            Toast.LENGTH_SHORT)
3630                                    .show();
3631                        }
3632                        highlightInConference(user.getResource());
3633                    } else {
3634                        Toast.makeText(
3635                                        getActivity(),
3636                                        R.string.you_are_not_participating,
3637                                        Toast.LENGTH_SHORT)
3638                                .show();
3639                    }
3640                }
3641                return;
3642            } else {
3643                if (!message.getContact().isSelf()) {
3644                    activity.switchToContactDetails(message.getContact(), fingerprint);
3645                    return;
3646                }
3647            }
3648        }
3649        activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
3650    }
3651
3652    private Activity requireActivity() {
3653        final Activity activity = getActivity();
3654        if (activity == null) {
3655            throw new IllegalStateException("Activity not attached");
3656        }
3657        return activity;
3658    }
3659}