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