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.SpannableStringBuilder;
  35import android.text.TextUtils;
  36import android.util.Log;
  37import android.view.ContextMenu;
  38import android.view.ContextMenu.ContextMenuInfo;
  39import android.view.Gravity;
  40import android.view.LayoutInflater;
  41import android.view.Menu;
  42import android.view.MenuInflater;
  43import android.view.MenuItem;
  44import android.view.MotionEvent;
  45import android.view.View;
  46import android.view.View.OnClickListener;
  47import android.view.ViewGroup;
  48import android.view.inputmethod.EditorInfo;
  49import android.view.inputmethod.InputMethodManager;
  50import android.widget.AbsListView;
  51import android.widget.AbsListView.OnScrollListener;
  52import android.widget.AdapterView;
  53import android.widget.AdapterView.AdapterContextMenuInfo;
  54import android.widget.CheckBox;
  55import android.widget.ListView;
  56import android.widget.PopupMenu;
  57import android.widget.TextView.OnEditorActionListener;
  58import android.widget.Toast;
  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;
  65import com.google.android.material.dialog.MaterialAlertDialogBuilder;
  66import com.google.common.base.Optional;
  67import com.google.common.collect.ImmutableList;
  68import eu.siacs.conversations.Config;
  69import eu.siacs.conversations.R;
  70import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  71import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  72import eu.siacs.conversations.databinding.FragmentConversationBinding;
  73import eu.siacs.conversations.entities.Account;
  74import eu.siacs.conversations.entities.Blockable;
  75import eu.siacs.conversations.entities.Contact;
  76import eu.siacs.conversations.entities.Conversation;
  77import eu.siacs.conversations.entities.Conversational;
  78import eu.siacs.conversations.entities.DownloadableFile;
  79import eu.siacs.conversations.entities.Message;
  80import eu.siacs.conversations.entities.MucOptions;
  81import eu.siacs.conversations.entities.MucOptions.User;
  82import eu.siacs.conversations.entities.Presence;
  83import eu.siacs.conversations.entities.ReadByMarker;
  84import eu.siacs.conversations.entities.Transferable;
  85import eu.siacs.conversations.entities.TransferablePlaceholder;
  86import eu.siacs.conversations.http.HttpDownloadConnection;
  87import eu.siacs.conversations.persistance.FileBackend;
  88import eu.siacs.conversations.services.CallIntegrationConnectionService;
  89import eu.siacs.conversations.services.MessageArchiveService;
  90import eu.siacs.conversations.services.QuickConversationsService;
  91import eu.siacs.conversations.services.XmppConnectionService;
  92import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  93import eu.siacs.conversations.ui.adapter.MessageAdapter;
  94import eu.siacs.conversations.ui.util.ActivityResult;
  95import eu.siacs.conversations.ui.util.Attachment;
  96import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  97import eu.siacs.conversations.ui.util.DateSeparator;
  98import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
  99import eu.siacs.conversations.ui.util.ListViewUtils;
 100import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 101import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 102import eu.siacs.conversations.ui.util.PendingItem;
 103import eu.siacs.conversations.ui.util.PresenceSelector;
 104import eu.siacs.conversations.ui.util.ScrollState;
 105import eu.siacs.conversations.ui.util.SendButtonAction;
 106import eu.siacs.conversations.ui.util.SendButtonTool;
 107import eu.siacs.conversations.ui.util.ShareUtil;
 108import eu.siacs.conversations.ui.util.ViewUtil;
 109import eu.siacs.conversations.ui.widget.EditMessage;
 110import eu.siacs.conversations.utils.AccountUtils;
 111import eu.siacs.conversations.utils.Compatibility;
 112import eu.siacs.conversations.utils.GeoHelper;
 113import eu.siacs.conversations.utils.MessageUtils;
 114import eu.siacs.conversations.utils.NickValidityChecker;
 115import eu.siacs.conversations.utils.PermissionUtils;
 116import eu.siacs.conversations.utils.QuickLoader;
 117import eu.siacs.conversations.utils.StylingHelper;
 118import eu.siacs.conversations.utils.TimeFrameUtils;
 119import eu.siacs.conversations.utils.UIHelper;
 120import eu.siacs.conversations.xmpp.Jid;
 121import eu.siacs.conversations.xmpp.XmppConnection;
 122import eu.siacs.conversations.xmpp.chatstate.ChatState;
 123import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 124import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 125import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 126import eu.siacs.conversations.xmpp.jingle.Media;
 127import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 128import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 129import java.util.ArrayList;
 130import java.util.Arrays;
 131import java.util.Collection;
 132import java.util.Collections;
 133import java.util.HashSet;
 134import java.util.Iterator;
 135import java.util.List;
 136import java.util.Set;
 137import java.util.UUID;
 138import java.util.concurrent.atomic.AtomicBoolean;
 139
 140public class ConversationFragment extends XmppFragment
 141        implements EditMessage.KeyboardListener,
 142                MessageAdapter.OnContactPictureLongClicked,
 143                MessageAdapter.OnContactPictureClicked {
 144
 145    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 146    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 147    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 148    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 149    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 150    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 151    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 152    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 153    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 154    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 155    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 156    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 157    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 158    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 159    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 160    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 161    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 162
 163    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 164    public static final String STATE_CONVERSATION_UUID =
 165            ConversationFragment.class.getName() + ".uuid";
 166    public static final String STATE_SCROLL_POSITION =
 167            ConversationFragment.class.getName() + ".scroll_position";
 168    public static final String STATE_PHOTO_URI =
 169            ConversationFragment.class.getName() + ".media_previews";
 170    public static final String STATE_MEDIA_PREVIEWS =
 171            ConversationFragment.class.getName() + ".take_photo_uri";
 172    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 173
 174    private final List<Message> messageList = new ArrayList<>();
 175    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 176    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 177    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 178    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 179    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 180    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 181    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 182    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 183    public Uri mPendingEditorContent = null;
 184    protected MessageAdapter messageListAdapter;
 185    private MediaPreviewAdapter mediaPreviewAdapter;
 186    private String lastMessageUuid = null;
 187    private Conversation conversation;
 188    private FragmentConversationBinding binding;
 189    private Toast messageLoaderToast;
 190    private ConversationsActivity activity;
 191    private boolean reInitRequiredOnStart = true;
 192    private final OnClickListener clickToMuc =
 193            new OnClickListener() {
 194
 195                @Override
 196                public void onClick(View v) {
 197                    ConferenceDetailsActivity.open(getActivity(), conversation);
 198                }
 199            };
 200    private final OnClickListener leaveMuc =
 201            new OnClickListener() {
 202
 203                @Override
 204                public void onClick(View v) {
 205                    activity.xmppConnectionService.archiveConversation(conversation);
 206                }
 207            };
 208    private final OnClickListener joinMuc =
 209            new OnClickListener() {
 210
 211                @Override
 212                public void onClick(View v) {
 213                    activity.xmppConnectionService.joinMuc(conversation);
 214                }
 215            };
 216
 217    private final OnClickListener acceptJoin =
 218            new OnClickListener() {
 219                @Override
 220                public void onClick(View v) {
 221                    conversation.setAttribute("accept_non_anonymous", true);
 222                    activity.xmppConnectionService.updateConversation(conversation);
 223                    activity.xmppConnectionService.joinMuc(conversation);
 224                }
 225            };
 226
 227    private final OnClickListener enterPassword =
 228            new OnClickListener() {
 229
 230                @Override
 231                public void onClick(View v) {
 232                    MucOptions muc = conversation.getMucOptions();
 233                    String password = muc.getPassword();
 234                    if (password == null) {
 235                        password = "";
 236                    }
 237                    activity.quickPasswordEdit(
 238                            password,
 239                            value -> {
 240                                activity.xmppConnectionService.providePasswordForMuc(
 241                                        conversation, value);
 242                                return null;
 243                            });
 244                }
 245            };
 246    private final OnScrollListener mOnScrollListener =
 247            new OnScrollListener() {
 248
 249                @Override
 250                public void onScrollStateChanged(AbsListView view, int scrollState) {
 251                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 252                        fireReadEvent();
 253                    }
 254                }
 255
 256                @Override
 257                public void onScroll(
 258                        final AbsListView view,
 259                        int firstVisibleItem,
 260                        int visibleItemCount,
 261                        int totalItemCount) {
 262                    toggleScrollDownButton(view);
 263                    synchronized (ConversationFragment.this.messageList) {
 264                        if (firstVisibleItem < 5
 265                                && conversation != null
 266                                && conversation.messagesLoaded.compareAndSet(true, false)
 267                                && messageList.size() > 0) {
 268                            long timestamp;
 269                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 270                                    && messageList.size() >= 2) {
 271                                timestamp = messageList.get(1).getTimeSent();
 272                            } else {
 273                                timestamp = messageList.get(0).getTimeSent();
 274                            }
 275                            activity.xmppConnectionService.loadMoreMessages(
 276                                    conversation,
 277                                    timestamp,
 278                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 279                                        @Override
 280                                        public void onMoreMessagesLoaded(
 281                                                final int c, final Conversation conversation) {
 282                                            if (ConversationFragment.this.conversation
 283                                                    != conversation) {
 284                                                conversation.messagesLoaded.set(true);
 285                                                return;
 286                                            }
 287                                            runOnUiThread(
 288                                                    () -> {
 289                                                        synchronized (messageList) {
 290                                                            final int oldPosition =
 291                                                                    binding.messagesView
 292                                                                            .getFirstVisiblePosition();
 293                                                            Message message = null;
 294                                                            int childPos;
 295                                                            for (childPos = 0;
 296                                                                    childPos + oldPosition
 297                                                                            < messageList.size();
 298                                                                    ++childPos) {
 299                                                                message =
 300                                                                        messageList.get(
 301                                                                                oldPosition
 302                                                                                        + childPos);
 303                                                                if (message.getType()
 304                                                                        != Message.TYPE_STATUS) {
 305                                                                    break;
 306                                                                }
 307                                                            }
 308                                                            final String uuid =
 309                                                                    message != null
 310                                                                            ? message.getUuid()
 311                                                                            : null;
 312                                                            View v =
 313                                                                    binding.messagesView.getChildAt(
 314                                                                            childPos);
 315                                                            final int pxOffset =
 316                                                                    (v == null) ? 0 : v.getTop();
 317                                                            ConversationFragment.this.conversation
 318                                                                    .populateWithMessages(
 319                                                                            ConversationFragment
 320                                                                                    .this
 321                                                                                    .messageList);
 322                                                            try {
 323                                                                updateStatusMessages();
 324                                                            } catch (IllegalStateException e) {
 325                                                                Log.d(
 326                                                                        Config.LOGTAG,
 327                                                                        "caught illegal state"
 328                                                                                + " exception while"
 329                                                                                + " updating status"
 330                                                                                + " messages");
 331                                                            }
 332                                                            messageListAdapter
 333                                                                    .notifyDataSetChanged();
 334                                                            int pos =
 335                                                                    Math.max(
 336                                                                            getIndexOf(
 337                                                                                    uuid,
 338                                                                                    messageList),
 339                                                                            0);
 340                                                            binding.messagesView
 341                                                                    .setSelectionFromTop(
 342                                                                            pos, pxOffset);
 343                                                            if (messageLoaderToast != null) {
 344                                                                messageLoaderToast.cancel();
 345                                                            }
 346                                                            conversation.messagesLoaded.set(true);
 347                                                        }
 348                                                    });
 349                                        }
 350
 351                                        @Override
 352                                        public void informUser(final int resId) {
 353
 354                                            runOnUiThread(
 355                                                    () -> {
 356                                                        if (messageLoaderToast != null) {
 357                                                            messageLoaderToast.cancel();
 358                                                        }
 359                                                        if (ConversationFragment.this.conversation
 360                                                                != conversation) {
 361                                                            return;
 362                                                        }
 363                                                        messageLoaderToast =
 364                                                                Toast.makeText(
 365                                                                        view.getContext(),
 366                                                                        resId,
 367                                                                        Toast.LENGTH_LONG);
 368                                                        messageLoaderToast.show();
 369                                                    });
 370                                        }
 371                                    });
 372                        }
 373                    }
 374                }
 375            };
 376    private final EditMessage.OnCommitContentListener mEditorContentListener =
 377            new EditMessage.OnCommitContentListener() {
 378                @Override
 379                public boolean onCommitContent(
 380                        InputContentInfoCompat inputContentInfo,
 381                        int flags,
 382                        Bundle opts,
 383                        String[] contentMimeTypes) {
 384                    // try to get permission to read the image, if applicable
 385                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 386                            != 0) {
 387                        try {
 388                            inputContentInfo.requestPermission();
 389                        } catch (Exception e) {
 390                            Log.e(
 391                                    Config.LOGTAG,
 392                                    "InputContentInfoCompat#requestPermission() failed.",
 393                                    e);
 394                            Toast.makeText(
 395                                            getActivity(),
 396                                            activity.getString(
 397                                                    R.string.no_permission_to_access_x,
 398                                                    inputContentInfo.getDescription()),
 399                                            Toast.LENGTH_LONG)
 400                                    .show();
 401                            return false;
 402                        }
 403                    }
 404                    if (hasPermissions(
 405                            REQUEST_ADD_EDITOR_CONTENT,
 406                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 407                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 408                    } else {
 409                        mPendingEditorContent = inputContentInfo.getContentUri();
 410                    }
 411                    return true;
 412                }
 413            };
 414    private Message selectedMessage;
 415    private final OnClickListener mEnableAccountListener =
 416            new OnClickListener() {
 417                @Override
 418                public void onClick(View v) {
 419                    final Account account = conversation == null ? null : conversation.getAccount();
 420                    if (account != null) {
 421                        account.setOption(Account.OPTION_SOFT_DISABLED, false);
 422                        account.setOption(Account.OPTION_DISABLED, false);
 423                        activity.xmppConnectionService.updateAccount(account);
 424                    }
 425                }
 426            };
 427    private final OnClickListener mUnblockClickListener =
 428            new OnClickListener() {
 429                @Override
 430                public void onClick(final View v) {
 431                    v.post(() -> v.setVisibility(View.INVISIBLE));
 432                    if (conversation.isDomainBlocked()) {
 433                        BlockContactDialog.show(activity, conversation);
 434                    } else {
 435                        unblockConversation(conversation);
 436                    }
 437                }
 438            };
 439    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 440    private final OnClickListener mAddBackClickListener =
 441            new OnClickListener() {
 442
 443                @Override
 444                public void onClick(View v) {
 445                    final Contact contact = conversation == null ? null : conversation.getContact();
 446                    if (contact != null) {
 447                        activity.xmppConnectionService.createContact(contact, true);
 448                        activity.switchToContactDetails(contact);
 449                    }
 450                }
 451            };
 452    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 453    private final OnClickListener mAllowPresenceSubscription =
 454            new OnClickListener() {
 455                @Override
 456                public void onClick(View v) {
 457                    final Contact contact = conversation == null ? null : conversation.getContact();
 458                    if (contact != null) {
 459                        activity.xmppConnectionService.sendPresencePacket(
 460                                contact.getAccount(),
 461                                activity.xmppConnectionService
 462                                        .getPresenceGenerator()
 463                                        .sendPresenceUpdatesTo(contact));
 464                        hideSnackbar();
 465                    }
 466                }
 467            };
 468    protected OnClickListener clickToDecryptListener =
 469            new OnClickListener() {
 470
 471                @Override
 472                public void onClick(View v) {
 473                    PendingIntent pendingIntent =
 474                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 475                    if (pendingIntent != null) {
 476                        try {
 477                            getActivity()
 478                                    .startIntentSenderForResult(
 479                                            pendingIntent.getIntentSender(),
 480                                            REQUEST_DECRYPT_PGP,
 481                                            null,
 482                                            0,
 483                                            0,
 484                                            0,
 485                                            Compatibility.pgpStartIntentSenderOptions());
 486                        } catch (SendIntentException e) {
 487                            Toast.makeText(
 488                                            getActivity(),
 489                                            R.string.unable_to_connect_to_keychain,
 490                                            Toast.LENGTH_SHORT)
 491                                    .show();
 492                            conversation
 493                                    .getAccount()
 494                                    .getPgpDecryptionService()
 495                                    .continueDecryption(true);
 496                        }
 497                    }
 498                    updateSnackBar(conversation);
 499                }
 500            };
 501    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 502    private final OnEditorActionListener mEditorActionListener =
 503            (v, actionId, event) -> {
 504                if (actionId == EditorInfo.IME_ACTION_SEND) {
 505                    InputMethodManager imm =
 506                            (InputMethodManager)
 507                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 508                    if (imm != null && imm.isFullscreenMode()) {
 509                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 510                    }
 511                    sendMessage();
 512                    return true;
 513                } else {
 514                    return false;
 515                }
 516            };
 517    private final OnClickListener mScrollButtonListener =
 518            new OnClickListener() {
 519
 520                @Override
 521                public void onClick(View v) {
 522                    stopScrolling();
 523                    setSelection(binding.messagesView.getCount() - 1, true);
 524                }
 525            };
 526    private final OnClickListener mSendButtonListener =
 527            new OnClickListener() {
 528
 529                @Override
 530                public void onClick(View v) {
 531                    Object tag = v.getTag();
 532                    if (tag instanceof SendButtonAction) {
 533                        SendButtonAction action = (SendButtonAction) tag;
 534                        switch (action) {
 535                            case TAKE_PHOTO:
 536                            case RECORD_VIDEO:
 537                            case SEND_LOCATION:
 538                            case RECORD_VOICE:
 539                            case CHOOSE_PICTURE:
 540                                attachFile(action.toChoice());
 541                                break;
 542                            case CANCEL:
 543                                if (conversation != null) {
 544                                    if (conversation.setCorrectingMessage(null)) {
 545                                        binding.textinput.setText("");
 546                                        binding.textinput.append(conversation.getDraftMessage());
 547                                        conversation.setDraftMessage(null);
 548                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 549                                        conversation.setNextCounterpart(null);
 550                                        binding.textinput.setText("");
 551                                    } else {
 552                                        binding.textinput.setText("");
 553                                    }
 554                                    updateChatMsgHint();
 555                                    updateSendButton();
 556                                    updateEditablity();
 557                                }
 558                                break;
 559                            default:
 560                                sendMessage();
 561                        }
 562                    } else {
 563                        sendMessage();
 564                    }
 565                }
 566            };
 567    private int completionIndex = 0;
 568    private int lastCompletionLength = 0;
 569    private String incomplete;
 570    private int lastCompletionCursor;
 571    private boolean firstWord = false;
 572    private Message mPendingDownloadableMessage;
 573
 574    private static ConversationFragment findConversationFragment(Activity activity) {
 575        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 576        if (fragment instanceof ConversationFragment) {
 577            return (ConversationFragment) fragment;
 578        }
 579        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 580        if (fragment instanceof ConversationFragment) {
 581            return (ConversationFragment) fragment;
 582        }
 583        return null;
 584    }
 585
 586    public static void startStopPending(Activity activity) {
 587        ConversationFragment fragment = findConversationFragment(activity);
 588        if (fragment != null) {
 589            fragment.messageListAdapter.startStopPending();
 590        }
 591    }
 592
 593    public static void downloadFile(Activity activity, Message message) {
 594        ConversationFragment fragment = findConversationFragment(activity);
 595        if (fragment != null) {
 596            fragment.startDownloadable(message);
 597        }
 598    }
 599
 600    public static void registerPendingMessage(Activity activity, Message message) {
 601        ConversationFragment fragment = findConversationFragment(activity);
 602        if (fragment != null) {
 603            fragment.pendingMessage.push(message);
 604        }
 605    }
 606
 607    public static void openPendingMessage(Activity activity) {
 608        ConversationFragment fragment = findConversationFragment(activity);
 609        if (fragment != null) {
 610            Message message = fragment.pendingMessage.pop();
 611            if (message != null) {
 612                fragment.messageListAdapter.openDownloadable(message);
 613            }
 614        }
 615    }
 616
 617    public static Conversation getConversation(Activity activity) {
 618        return getConversation(activity, R.id.secondary_fragment);
 619    }
 620
 621    private static Conversation getConversation(Activity activity, @IdRes int res) {
 622        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 623        if (fragment instanceof ConversationFragment) {
 624            return ((ConversationFragment) fragment).getConversation();
 625        } else {
 626            return null;
 627        }
 628    }
 629
 630    public static ConversationFragment get(Activity activity) {
 631        FragmentManager fragmentManager = activity.getFragmentManager();
 632        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 633        if (fragment instanceof ConversationFragment) {
 634            return (ConversationFragment) fragment;
 635        } else {
 636            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 637            return fragment instanceof ConversationFragment
 638                    ? (ConversationFragment) fragment
 639                    : null;
 640        }
 641    }
 642
 643    public static Conversation getConversationReliable(Activity activity) {
 644        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 645        if (conversation != null) {
 646            return conversation;
 647        }
 648        return getConversation(activity, R.id.main_fragment);
 649    }
 650
 651    private static boolean scrolledToBottom(AbsListView listView) {
 652        final int count = listView.getCount();
 653        if (count == 0) {
 654            return true;
 655        } else if (listView.getLastVisiblePosition() == count - 1) {
 656            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 657            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 658        } else {
 659            return false;
 660        }
 661    }
 662
 663    private void toggleScrollDownButton() {
 664        toggleScrollDownButton(binding.messagesView);
 665    }
 666
 667    private void toggleScrollDownButton(AbsListView listView) {
 668        if (conversation == null) {
 669            return;
 670        }
 671        if (scrolledToBottom(listView)) {
 672            lastMessageUuid = null;
 673            hideUnreadMessagesCount();
 674        } else {
 675            binding.scrollToBottomButton.setEnabled(true);
 676            binding.scrollToBottomButton.show();
 677            if (lastMessageUuid == null) {
 678                lastMessageUuid = conversation.getLatestMessage().getUuid();
 679            }
 680            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 681                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 682            }
 683        }
 684    }
 685
 686    private int getIndexOf(String uuid, List<Message> messages) {
 687        if (uuid == null) {
 688            return messages.size() - 1;
 689        }
 690        for (int i = 0; i < messages.size(); ++i) {
 691            if (uuid.equals(messages.get(i).getUuid())) {
 692                return i;
 693            }
 694        }
 695        return -1;
 696    }
 697
 698    private ScrollState getScrollPosition() {
 699        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 700        if (listView == null
 701                || listView.getCount() == 0
 702                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 703            return null;
 704        } else {
 705            final int pos = listView.getFirstVisiblePosition();
 706            final View view = listView.getChildAt(0);
 707            if (view == null) {
 708                return null;
 709            } else {
 710                return new ScrollState(pos, view.getTop());
 711            }
 712        }
 713    }
 714
 715    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 716        if (scrollPosition != null) {
 717
 718            this.lastMessageUuid = lastMessageUuid;
 719            if (lastMessageUuid != null) {
 720                binding.unreadCountCustomView.setUnreadCount(
 721                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 722            }
 723            // TODO maybe this needs a 'post'
 724            this.binding.messagesView.setSelectionFromTop(
 725                    scrollPosition.position, scrollPosition.offset);
 726            toggleScrollDownButton();
 727        }
 728    }
 729
 730    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 731        if (conversation == null) {
 732            return;
 733        }
 734        activity.xmppConnectionService.attachLocationToConversation(
 735                conversation,
 736                uri,
 737                new UiCallback<Message>() {
 738
 739                    @Override
 740                    public void success(Message message) {}
 741
 742                    @Override
 743                    public void error(int errorCode, Message object) {
 744                        // TODO show possible pgp error
 745                    }
 746
 747                    @Override
 748                    public void userInputRequired(PendingIntent pi, Message object) {}
 749                });
 750    }
 751
 752    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 753        if (conversation == null) {
 754            return;
 755        }
 756        final Toast prepareFileToast =
 757                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 758        prepareFileToast.show();
 759        activity.delegateUriPermissionsToService(uri);
 760        activity.xmppConnectionService.attachFileToConversation(
 761                conversation,
 762                uri,
 763                type,
 764                new UiInformableCallback<Message>() {
 765                    @Override
 766                    public void inform(final String text) {
 767                        hidePrepareFileToast(prepareFileToast);
 768                        runOnUiThread(() -> activity.replaceToast(text));
 769                    }
 770
 771                    @Override
 772                    public void success(Message message) {
 773                        runOnUiThread(() -> activity.hideToast());
 774                        hidePrepareFileToast(prepareFileToast);
 775                    }
 776
 777                    @Override
 778                    public void error(final int errorCode, Message message) {
 779                        hidePrepareFileToast(prepareFileToast);
 780                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 781                    }
 782
 783                    @Override
 784                    public void userInputRequired(PendingIntent pi, Message message) {
 785                        hidePrepareFileToast(prepareFileToast);
 786                    }
 787                });
 788    }
 789
 790    public void attachEditorContentToConversation(Uri uri) {
 791        mediaPreviewAdapter.addMediaPreviews(
 792                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 793        toggleInputMethod();
 794    }
 795
 796    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 797        if (conversation == null) {
 798            return;
 799        }
 800        final Toast prepareFileToast =
 801                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 802        prepareFileToast.show();
 803        activity.delegateUriPermissionsToService(uri);
 804        activity.xmppConnectionService.attachImageToConversation(
 805                conversation,
 806                uri,
 807                type,
 808                new UiCallback<Message>() {
 809
 810                    @Override
 811                    public void userInputRequired(PendingIntent pi, Message object) {
 812                        hidePrepareFileToast(prepareFileToast);
 813                    }
 814
 815                    @Override
 816                    public void success(Message message) {
 817                        hidePrepareFileToast(prepareFileToast);
 818                    }
 819
 820                    @Override
 821                    public void error(final int error, final Message message) {
 822                        hidePrepareFileToast(prepareFileToast);
 823                        final ConversationsActivity activity = ConversationFragment.this.activity;
 824                        if (activity == null) {
 825                            return;
 826                        }
 827                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 828                    }
 829                });
 830    }
 831
 832    private void hidePrepareFileToast(final Toast prepareFileToast) {
 833        if (prepareFileToast != null && activity != null) {
 834            activity.runOnUiThread(prepareFileToast::cancel);
 835        }
 836    }
 837
 838    private void sendMessage() {
 839        if (mediaPreviewAdapter.hasAttachments()) {
 840            commitAttachments();
 841            return;
 842        }
 843        final Editable text = this.binding.textinput.getText();
 844        final String body = text == null ? "" : text.toString();
 845        final Conversation conversation = this.conversation;
 846        if (body.isEmpty() || conversation == null) {
 847            return;
 848        }
 849        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 850            return;
 851        }
 852        final Message message;
 853        if (conversation.getCorrectingMessage() == null) {
 854            message = new Message(conversation, body, conversation.getNextEncryption());
 855            Message.configurePrivateMessage(message);
 856        } else {
 857            message = conversation.getCorrectingMessage();
 858            message.setBody(body);
 859            message.putEdited(message.getUuid(), message.getServerMsgId());
 860            message.setUuid(UUID.randomUUID().toString());
 861        }
 862        switch (conversation.getNextEncryption()) {
 863            case Message.ENCRYPTION_PGP:
 864                sendPgpMessage(message);
 865                break;
 866            default:
 867                sendMessage(message);
 868        }
 869    }
 870
 871    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 872        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 873                && trustKeysIfNeeded(requestCode);
 874    }
 875
 876    protected boolean trustKeysIfNeeded(int requestCode) {
 877        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 878        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 879        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 880        boolean hasUndecidedOwn =
 881                !axolotlService
 882                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 883                        .isEmpty();
 884        boolean hasUndecidedContacts =
 885                !axolotlService
 886                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 887                        .isEmpty();
 888        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 889        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 890        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 891        if (hasUndecidedOwn
 892                || hasUndecidedContacts
 893                || hasPendingKeys
 894                || hasNoTrustedKeys
 895                || hasUnaccepted
 896                || downloadInProgress) {
 897            axolotlService.createSessionsIfNeeded(conversation);
 898            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 899            String[] contacts = new String[targets.size()];
 900            for (int i = 0; i < contacts.length; ++i) {
 901                contacts[i] = targets.get(i).toString();
 902            }
 903            intent.putExtra("contacts", contacts);
 904            intent.putExtra(
 905                    EXTRA_ACCOUNT, conversation.getAccount().getJid().asBareJid().toString());
 906            intent.putExtra("conversation", conversation.getUuid());
 907            startActivityForResult(intent, requestCode);
 908            return true;
 909        } else {
 910            return false;
 911        }
 912    }
 913
 914    public void updateChatMsgHint() {
 915        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 916        if (conversation.getCorrectingMessage() != null) {
 917            this.binding.textInputHint.setVisibility(View.GONE);
 918            this.binding.textinput.setHint(R.string.send_corrected_message);
 919        } else if (multi && conversation.getNextCounterpart() != null) {
 920            this.binding.textinput.setHint(R.string.send_unencrypted_message);
 921            this.binding.textInputHint.setVisibility(View.VISIBLE);
 922            this.binding.textInputHint.setText(
 923                    getString(
 924                            R.string.send_private_message_to,
 925                            conversation.getNextCounterpart().getResource()));
 926        } else if (multi && !conversation.getMucOptions().participating()) {
 927            this.binding.textInputHint.setVisibility(View.GONE);
 928            this.binding.textinput.setHint(R.string.you_are_not_participating);
 929        } else {
 930            this.binding.textInputHint.setVisibility(View.GONE);
 931            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 932            getActivity().invalidateOptionsMenu();
 933        }
 934    }
 935
 936    public void setupIme() {
 937        this.binding.textinput.refreshIme();
 938    }
 939
 940    private void handleActivityResult(ActivityResult activityResult) {
 941        if (activityResult.resultCode == Activity.RESULT_OK) {
 942            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 943        } else {
 944            handleNegativeActivityResult(activityResult.requestCode);
 945        }
 946    }
 947
 948    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 949        switch (requestCode) {
 950            case REQUEST_TRUST_KEYS_TEXT:
 951                sendMessage();
 952                break;
 953            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 954                commitAttachments();
 955                break;
 956            case REQUEST_START_AUDIO_CALL:
 957                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
 958                break;
 959            case REQUEST_START_VIDEO_CALL:
 960                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
 961                break;
 962            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 963                final List<Attachment> imageUris =
 964                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 965                mediaPreviewAdapter.addMediaPreviews(imageUris);
 966                toggleInputMethod();
 967                break;
 968            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 969                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 970                if (takePhotoUri != null) {
 971                    mediaPreviewAdapter.addMediaPreviews(
 972                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 973                    toggleInputMethod();
 974                } else {
 975                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 976                }
 977                break;
 978            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 979            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 980            case ATTACHMENT_CHOICE_RECORD_VOICE:
 981                final Attachment.Type type =
 982                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
 983                                ? Attachment.Type.RECORDING
 984                                : Attachment.Type.FILE;
 985                final List<Attachment> fileUris =
 986                        Attachment.extractAttachments(getActivity(), data, type);
 987                mediaPreviewAdapter.addMediaPreviews(fileUris);
 988                toggleInputMethod();
 989                break;
 990            case ATTACHMENT_CHOICE_LOCATION:
 991                final double latitude = data.getDoubleExtra("latitude", 0);
 992                final double longitude = data.getDoubleExtra("longitude", 0);
 993                final int accuracy = data.getIntExtra("accuracy", 0);
 994                final Uri geo;
 995                if (accuracy > 0) {
 996                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
 997                } else {
 998                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
 999                }
1000                mediaPreviewAdapter.addMediaPreviews(
1001                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1002                toggleInputMethod();
1003                break;
1004            case REQUEST_INVITE_TO_CONVERSATION:
1005                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1006                if (invite != null) {
1007                    if (invite.execute(activity)) {
1008                        activity.mToast =
1009                                Toast.makeText(
1010                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1011                        activity.mToast.show();
1012                    }
1013                }
1014                break;
1015        }
1016    }
1017
1018    private void commitAttachments() {
1019        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1020        if (anyNeedsExternalStoragePermission(attachments)
1021                && !hasPermissions(
1022                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1023            return;
1024        }
1025        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1026            return;
1027        }
1028        final PresenceSelector.OnPresenceSelected callback =
1029                () -> {
1030                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1031                        final Attachment attachment = i.next();
1032                        if (attachment.getType() == Attachment.Type.LOCATION) {
1033                            attachLocationToConversation(conversation, attachment.getUri());
1034                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1035                            Log.d(
1036                                    Config.LOGTAG,
1037                                    "ConversationsActivity.commitAttachments() - attaching image to"
1038                                            + " conversations. CHOOSE_IMAGE");
1039                            attachImageToConversation(
1040                                    conversation, attachment.getUri(), attachment.getMime());
1041                        } else {
1042                            Log.d(
1043                                    Config.LOGTAG,
1044                                    "ConversationsActivity.commitAttachments() - attaching file to"
1045                                        + " conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1046                            attachFileToConversation(
1047                                    conversation, attachment.getUri(), attachment.getMime());
1048                        }
1049                    }
1050                    mediaPreviewAdapter.notifyDataSetChanged();
1051                    toggleInputMethod();
1052                };
1053        if (conversation == null
1054                || conversation.getMode() == Conversation.MODE_MULTI
1055                || Attachment.canBeSendInBand(attachments)
1056                || (conversation.getAccount().httpUploadAvailable()
1057                        && FileBackend.allFilesUnderSize(
1058                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1059            callback.onPresenceSelected();
1060        } else {
1061            activity.selectPresence(conversation, callback);
1062        }
1063    }
1064
1065    private static boolean anyNeedsExternalStoragePermission(
1066            final Collection<Attachment> attachments) {
1067        for (final Attachment attachment : attachments) {
1068            if (attachment.getType() != Attachment.Type.LOCATION) {
1069                return true;
1070            }
1071        }
1072        return false;
1073    }
1074
1075    public void toggleInputMethod() {
1076        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1077        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1078        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1079        updateSendButton();
1080    }
1081
1082    private void handleNegativeActivityResult(int requestCode) {
1083        switch (requestCode) {
1084            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1085                if (pendingTakePhotoUri.clear()) {
1086                    Log.d(
1087                            Config.LOGTAG,
1088                            "cleared pending photo uri after negative activity result");
1089                }
1090                break;
1091        }
1092    }
1093
1094    @Override
1095    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1096        super.onActivityResult(requestCode, resultCode, data);
1097        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1098        if (activity != null && activity.xmppConnectionService != null) {
1099            handleActivityResult(activityResult);
1100        } else {
1101            this.postponedActivityResult.push(activityResult);
1102        }
1103    }
1104
1105    public void unblockConversation(final Blockable conversation) {
1106        activity.xmppConnectionService.sendUnblockRequest(conversation);
1107    }
1108
1109    @Override
1110    public void onAttach(Activity activity) {
1111        super.onAttach(activity);
1112        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1113        if (activity instanceof ConversationsActivity) {
1114            this.activity = (ConversationsActivity) activity;
1115        } else {
1116            throw new IllegalStateException(
1117                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1118        }
1119    }
1120
1121    @Override
1122    public void onDetach() {
1123        super.onDetach();
1124        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1125    }
1126
1127    @Override
1128    public void onCreate(Bundle savedInstanceState) {
1129        super.onCreate(savedInstanceState);
1130        setHasOptionsMenu(true);
1131    }
1132
1133    @Override
1134    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1135        menuInflater.inflate(R.menu.fragment_conversation, menu);
1136        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1137        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1138        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1139        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1140        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1141        final MenuItem menuCall = menu.findItem(R.id.action_call);
1142        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1143        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1144        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1145
1146        if (conversation != null) {
1147            if (conversation.getMode() == Conversation.MODE_MULTI) {
1148                menuContactDetails.setVisible(false);
1149                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1150                menuMucDetails.setTitle(
1151                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1152                                ? R.string.action_muc_details
1153                                : R.string.channel_details);
1154                menuCall.setVisible(false);
1155                menuOngoingCall.setVisible(false);
1156            } else {
1157                final XmppConnectionService service =
1158                        activity == null ? null : activity.xmppConnectionService;
1159                final Optional<OngoingRtpSession> ongoingRtpSession =
1160                        service == null
1161                                ? Optional.absent()
1162                                : service.getJingleConnectionManager()
1163                                        .getOngoingRtpConnection(conversation.getContact());
1164                if (ongoingRtpSession.isPresent()) {
1165                    menuOngoingCall.setVisible(true);
1166                    menuCall.setVisible(false);
1167                } else {
1168                    menuOngoingCall.setVisible(false);
1169                    // use RtpCapability.check(conversation.getContact()); to check if contact
1170                    // actually has support
1171                    final boolean cameraAvailable =
1172                            activity != null && activity.isCameraFeatureAvailable();
1173                    menuCall.setVisible(true);
1174                    menuVideoCall.setVisible(cameraAvailable);
1175                }
1176                menuContactDetails.setVisible(!this.conversation.withSelf());
1177                menuMucDetails.setVisible(false);
1178                menuInviteContact.setVisible(
1179                        service != null
1180                                && service.findConferenceServer(conversation.getAccount()) != null);
1181            }
1182            if (conversation.isMuted()) {
1183                menuMute.setVisible(false);
1184            } else {
1185                menuUnmute.setVisible(false);
1186            }
1187            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1188            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1189            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1190                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1191            } else {
1192                menuTogglePinned.setTitle(R.string.add_to_favorites);
1193            }
1194        }
1195        super.onCreateOptionsMenu(menu, menuInflater);
1196    }
1197
1198    @Override
1199    public View onCreateView(
1200            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1201        this.binding =
1202                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1203        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1204
1205        binding.textinput.addTextChangedListener(
1206                new StylingHelper.MessageEditorStyler(binding.textinput));
1207
1208        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1209        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1210
1211        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1212
1213        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1214        binding.messagesView.setOnScrollListener(mOnScrollListener);
1215        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1216        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1217        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1218        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1219        messageListAdapter.setOnContactPictureClicked(this);
1220        messageListAdapter.setOnContactPictureLongClicked(this);
1221        binding.messagesView.setAdapter(messageListAdapter);
1222
1223        registerForContextMenu(binding.messagesView);
1224
1225        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1226            this.binding.textinput.setCustomInsertionActionModeCallback(
1227                    new EditMessageActionModeCallback(this.binding.textinput));
1228        }
1229
1230        return binding.getRoot();
1231    }
1232
1233    @Override
1234    public void onDestroyView() {
1235        super.onDestroyView();
1236        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1237        messageListAdapter.setOnContactPictureClicked(null);
1238        messageListAdapter.setOnContactPictureLongClicked(null);
1239    }
1240
1241    private void quoteText(String text) {
1242        if (binding.textinput.isEnabled()) {
1243            binding.textinput.insertAsQuote(text);
1244            binding.textinput.requestFocus();
1245            InputMethodManager inputMethodManager =
1246                    (InputMethodManager)
1247                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1248            if (inputMethodManager != null) {
1249                inputMethodManager.showSoftInput(
1250                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1251            }
1252        }
1253    }
1254
1255    private void quoteMessage(Message message) {
1256        quoteText(MessageUtils.prepareQuote(message));
1257    }
1258
1259    @Override
1260    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1261        // This should cancel any remaining click events that would otherwise trigger links
1262        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1263        synchronized (this.messageList) {
1264            super.onCreateContextMenu(menu, v, menuInfo);
1265            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1266            this.selectedMessage = this.messageList.get(acmi.position);
1267            populateContextMenu(menu);
1268        }
1269    }
1270
1271    private void populateContextMenu(final ContextMenu menu) {
1272        final Message m = this.selectedMessage;
1273        final Transferable t = m.getTransferable();
1274        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1275
1276            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1277                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1278                return;
1279            }
1280
1281            if (m.getStatus() == Message.STATUS_RECEIVED
1282                    && t != null
1283                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1284                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1285                return;
1286            }
1287
1288            final boolean deleted = m.isDeleted();
1289            final boolean encrypted =
1290                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1291                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1292            final boolean receiving =
1293                    m.getStatus() == Message.STATUS_RECEIVED
1294                            && (t instanceof JingleFileTransferConnection
1295                                    || t instanceof HttpDownloadConnection);
1296            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1297            menu.setHeaderTitle(R.string.message_options);
1298            final MenuItem addReaction = menu.findItem(R.id.action_add_reaction);
1299            final MenuItem reportAndBlock = menu.findItem(R.id.action_report_and_block);
1300            final MenuItem openWith = menu.findItem(R.id.open_with);
1301            final MenuItem copyMessage = menu.findItem(R.id.copy_message);
1302            final MenuItem copyLink = menu.findItem(R.id.copy_link);
1303            final MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1304            final MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1305            final MenuItem correctMessage = menu.findItem(R.id.correct_message);
1306            final MenuItem shareWith = menu.findItem(R.id.share_with);
1307            final MenuItem sendAgain = menu.findItem(R.id.send_again);
1308            final MenuItem retryAsP2P = menu.findItem(R.id.send_again_as_p2p);
1309            final MenuItem copyUrl = menu.findItem(R.id.copy_url);
1310            final MenuItem downloadFile = menu.findItem(R.id.download_file);
1311            final MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1312            final MenuItem deleteFile = menu.findItem(R.id.delete_file);
1313            final MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1314            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1315            final boolean showError =
1316                    m.getStatus() == Message.STATUS_SEND_FAILED
1317                            && m.getErrorMessage() != null
1318                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1319            final Conversational conversational = m.getConversation();
1320            if (m.getStatus() == Message.STATUS_RECEIVED
1321                    && conversational instanceof Conversation c) {
1322                final XmppConnection connection = c.getAccount().getXmppConnection();
1323                if (c.isWithStranger()
1324                        && m.getServerMsgId() != null
1325                        && !c.isBlocked()
1326                        && connection != null
1327                        && connection.getFeatures().spamReporting()) {
1328                    reportAndBlock.setVisible(true);
1329                }
1330            }
1331            if (conversational instanceof Conversation c) {
1332                addReaction.setVisible(
1333                        !showError
1334                                && !m.isDeleted()
1335                                && (c.getMode() == Conversational.MODE_SINGLE
1336                                        || (c.getMucOptions().occupantId()
1337                                                && c.getMucOptions().participating())));
1338            } else {
1339                addReaction.setVisible(false);
1340            }
1341            if (!m.isFileOrImage()
1342                    && !encrypted
1343                    && !m.isGeoUri()
1344                    && !m.treatAsDownloadable()
1345                    && !unInitiatedButKnownSize
1346                    && t == null) {
1347                copyMessage.setVisible(true);
1348                quoteMessage.setVisible(!showError && !MessageUtils.prepareQuote(m).isEmpty());
1349                final String scheme =
1350                        ShareUtil.getLinkScheme(new SpannableStringBuilder(m.getBody()));
1351                if ("xmpp".equals(scheme)) {
1352                    copyLink.setTitle(R.string.copy_jabber_id);
1353                    copyLink.setVisible(true);
1354                } else if (scheme != null) {
1355                    copyLink.setVisible(true);
1356                }
1357            }
1358            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1359                retryDecryption.setVisible(true);
1360            }
1361            if (!showError
1362                    && m.getType() == Message.TYPE_TEXT
1363                    && !m.isGeoUri()
1364                    && m.isLastCorrectableMessage()
1365                    && m.getConversation() instanceof Conversation) {
1366                correctMessage.setVisible(true);
1367            }
1368            if ((m.isFileOrImage() && !deleted && !receiving)
1369                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1370                            && !unInitiatedButKnownSize
1371                            && t == null) {
1372                shareWith.setVisible(true);
1373            }
1374            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1375                sendAgain.setVisible(true);
1376                final var fileNotUploaded = m.isFileOrImage() && !m.hasFileOnRemoteHost();
1377                final var isPeerOnline =
1378                        conversational.getMode() == Conversation.MODE_SINGLE
1379                                && (conversational instanceof Conversation c)
1380                                && !c.getContact().getPresences().isEmpty();
1381                retryAsP2P.setVisible(fileNotUploaded && isPeerOnline);
1382            }
1383            if (m.hasFileOnRemoteHost()
1384                    || m.isGeoUri()
1385                    || m.treatAsDownloadable()
1386                    || unInitiatedButKnownSize
1387                    || t instanceof HttpDownloadConnection) {
1388                copyUrl.setVisible(true);
1389            }
1390            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1391                downloadFile.setVisible(true);
1392                downloadFile.setTitle(
1393                        activity.getString(
1394                                R.string.download_x_file,
1395                                UIHelper.getFileDescriptionString(activity, m)));
1396            }
1397            final boolean waitingOfferedSending =
1398                    m.getStatus() == Message.STATUS_WAITING
1399                            || m.getStatus() == Message.STATUS_UNSEND
1400                            || m.getStatus() == Message.STATUS_OFFERED;
1401            final boolean cancelable =
1402                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1403            if (cancelable) {
1404                cancelTransmission.setVisible(true);
1405            }
1406            if (m.isFileOrImage() && !deleted && !cancelable) {
1407                final String path = m.getRelativeFilePath();
1408                if (path == null
1409                        || !path.startsWith("/")
1410                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1411                    deleteFile.setVisible(true);
1412                    deleteFile.setTitle(
1413                            activity.getString(
1414                                    R.string.delete_x_file,
1415                                    UIHelper.getFileDescriptionString(activity, m)));
1416                }
1417            }
1418            if (showError) {
1419                showErrorMessage.setVisible(true);
1420            }
1421            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1422            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1423                    || (mime != null && mime.startsWith("audio/"))) {
1424                openWith.setVisible(true);
1425            }
1426        }
1427    }
1428
1429    @Override
1430    public boolean onContextItemSelected(MenuItem item) {
1431        switch (item.getItemId()) {
1432            case R.id.share_with:
1433                ShareUtil.share(activity, selectedMessage);
1434                return true;
1435            case R.id.correct_message:
1436                correctMessage(selectedMessage);
1437                return true;
1438            case R.id.copy_message:
1439                ShareUtil.copyToClipboard(activity, selectedMessage);
1440                return true;
1441            case R.id.copy_link:
1442                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1443                return true;
1444            case R.id.quote_message:
1445                quoteMessage(selectedMessage);
1446                return true;
1447            case R.id.send_again:
1448                resendMessage(selectedMessage, false);
1449                return true;
1450            case R.id.send_again_as_p2p:
1451                resendMessage(selectedMessage, true);
1452                return true;
1453            case R.id.copy_url:
1454                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1455                return true;
1456            case R.id.download_file:
1457                startDownloadable(selectedMessage);
1458                return true;
1459            case R.id.cancel_transmission:
1460                cancelTransmission(selectedMessage);
1461                return true;
1462            case R.id.retry_decryption:
1463                retryDecryption(selectedMessage);
1464                return true;
1465            case R.id.delete_file:
1466                deleteFile(selectedMessage);
1467                return true;
1468            case R.id.show_error_message:
1469                showErrorMessage(selectedMessage);
1470                return true;
1471            case R.id.open_with:
1472                openWith(selectedMessage);
1473                return true;
1474            case R.id.action_report_and_block:
1475                reportMessage(selectedMessage);
1476                return true;
1477            case R.id.action_add_reaction:
1478                addReaction(selectedMessage);
1479                return true;
1480            default:
1481                return super.onContextItemSelected(item);
1482        }
1483    }
1484
1485    @Override
1486    public boolean onOptionsItemSelected(final MenuItem item) {
1487        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1488            return false;
1489        } else if (conversation == null) {
1490            return super.onOptionsItemSelected(item);
1491        }
1492        switch (item.getItemId()) {
1493            case R.id.encryption_choice_axolotl:
1494            case R.id.encryption_choice_pgp:
1495            case R.id.encryption_choice_none:
1496                handleEncryptionSelection(item);
1497                break;
1498            case R.id.attach_choose_picture:
1499            case R.id.attach_take_picture:
1500            case R.id.attach_record_video:
1501            case R.id.attach_choose_file:
1502            case R.id.attach_record_voice:
1503            case R.id.attach_location:
1504                handleAttachmentSelection(item);
1505                break;
1506            case R.id.action_search:
1507                startSearch();
1508                break;
1509            case R.id.action_archive:
1510                activity.xmppConnectionService.archiveConversation(conversation);
1511                break;
1512            case R.id.action_contact_details:
1513                activity.switchToContactDetails(conversation.getContact());
1514                break;
1515            case R.id.action_muc_details:
1516                ConferenceDetailsActivity.open(getActivity(), conversation);
1517                break;
1518            case R.id.action_invite:
1519                startActivityForResult(
1520                        ChooseContactActivity.create(activity, conversation),
1521                        REQUEST_INVITE_TO_CONVERSATION);
1522                break;
1523            case R.id.action_clear_history:
1524                clearHistoryDialog(conversation);
1525                break;
1526            case R.id.action_mute:
1527                muteConversationDialog(conversation);
1528                break;
1529            case R.id.action_unmute:
1530                unMuteConversation(conversation);
1531                break;
1532            case R.id.action_block:
1533            case R.id.action_unblock:
1534                final Activity activity = getActivity();
1535                if (activity instanceof XmppActivity) {
1536                    BlockContactDialog.show((XmppActivity) activity, conversation);
1537                }
1538                break;
1539            case R.id.action_audio_call:
1540                checkPermissionAndTriggerAudioCall();
1541                break;
1542            case R.id.action_video_call:
1543                checkPermissionAndTriggerVideoCall();
1544                break;
1545            case R.id.action_ongoing_call:
1546                returnToOngoingCall();
1547                break;
1548            case R.id.action_toggle_pinned:
1549                togglePinned();
1550                break;
1551            default:
1552                break;
1553        }
1554        return super.onOptionsItemSelected(item);
1555    }
1556
1557    private void startSearch() {
1558        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1559        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1560        startActivity(intent);
1561    }
1562
1563    private void returnToOngoingCall() {
1564        final Optional<OngoingRtpSession> ongoingRtpSession =
1565                activity.xmppConnectionService
1566                        .getJingleConnectionManager()
1567                        .getOngoingRtpConnection(conversation.getContact());
1568        if (ongoingRtpSession.isPresent()) {
1569            final OngoingRtpSession id = ongoingRtpSession.get();
1570            final Intent intent = new Intent(getActivity(), RtpSessionActivity.class);
1571            intent.setAction(Intent.ACTION_VIEW);
1572            intent.putExtra(
1573                    RtpSessionActivity.EXTRA_ACCOUNT,
1574                    id.getAccount().getJid().asBareJid().toString());
1575            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toString());
1576            if (id instanceof AbstractJingleConnection) {
1577                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1578                startActivity(intent);
1579            } else if (id instanceof JingleConnectionManager.RtpSessionProposal proposal) {
1580                if (Media.audioOnly(proposal.media)) {
1581                    intent.putExtra(
1582                            RtpSessionActivity.EXTRA_LAST_ACTION,
1583                            RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1584                } else {
1585                    intent.putExtra(
1586                            RtpSessionActivity.EXTRA_LAST_ACTION,
1587                            RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1588                }
1589                intent.putExtra(RtpSessionActivity.EXTRA_PROPOSED_SESSION_ID, proposal.sessionId);
1590                startActivity(intent);
1591            }
1592        }
1593    }
1594
1595    private void togglePinned() {
1596        final boolean pinned =
1597                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1598        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1599        activity.xmppConnectionService.updateConversation(conversation);
1600        activity.invalidateOptionsMenu();
1601    }
1602
1603    private void checkPermissionAndTriggerAudioCall() {
1604        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1605            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1606            return;
1607        }
1608        final List<String> permissions;
1609        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1610            permissions =
1611                    Arrays.asList(
1612                            Manifest.permission.RECORD_AUDIO,
1613                            Manifest.permission.BLUETOOTH_CONNECT);
1614        } else {
1615            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1616        }
1617        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1618            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1619        }
1620    }
1621
1622    private void checkPermissionAndTriggerVideoCall() {
1623        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1624            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1625            return;
1626        }
1627        final List<String> permissions;
1628        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1629            permissions =
1630                    Arrays.asList(
1631                            Manifest.permission.RECORD_AUDIO,
1632                            Manifest.permission.CAMERA,
1633                            Manifest.permission.BLUETOOTH_CONNECT);
1634        } else {
1635            permissions =
1636                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1637        }
1638        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1639            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1640        }
1641    }
1642
1643    private void triggerRtpSession(final String action) {
1644        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy()) {
1645            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1646                    .show();
1647            return;
1648        }
1649        final Account account = conversation.getAccount();
1650        if (account.setOption(Account.OPTION_SOFT_DISABLED, false)) {
1651            activity.xmppConnectionService.updateAccount(account);
1652        }
1653        final Contact contact = conversation.getContact();
1654        if (Config.USE_JINGLE_MESSAGE_INIT && RtpCapability.jmiSupport(contact)) {
1655            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1656        } else {
1657            final RtpCapability.Capability capability;
1658            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1659                capability = RtpCapability.Capability.VIDEO;
1660            } else {
1661                capability = RtpCapability.Capability.AUDIO;
1662            }
1663            PresenceSelector.selectFullJidForDirectRtpConnection(
1664                    activity,
1665                    contact,
1666                    capability,
1667                    fullJid -> {
1668                        triggerRtpSession(contact.getAccount(), fullJid, action);
1669                    });
1670        }
1671    }
1672
1673    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1674        CallIntegrationConnectionService.placeCall(
1675                activity.xmppConnectionService,
1676                account,
1677                with,
1678                RtpSessionActivity.actionToMedia(action));
1679    }
1680
1681    private void handleAttachmentSelection(MenuItem item) {
1682        switch (item.getItemId()) {
1683            case R.id.attach_choose_picture:
1684                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1685                break;
1686            case R.id.attach_take_picture:
1687                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1688                break;
1689            case R.id.attach_record_video:
1690                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1691                break;
1692            case R.id.attach_choose_file:
1693                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1694                break;
1695            case R.id.attach_record_voice:
1696                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1697                break;
1698            case R.id.attach_location:
1699                attachFile(ATTACHMENT_CHOICE_LOCATION);
1700                break;
1701        }
1702    }
1703
1704    private void handleEncryptionSelection(MenuItem item) {
1705        if (conversation == null) {
1706            return;
1707        }
1708        final boolean updated;
1709        switch (item.getItemId()) {
1710            case R.id.encryption_choice_none:
1711                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1712                item.setChecked(true);
1713                break;
1714            case R.id.encryption_choice_pgp:
1715                if (activity.hasPgp()) {
1716                    if (conversation.getAccount().getPgpSignature() != null) {
1717                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1718                        item.setChecked(true);
1719                    } else {
1720                        updated = false;
1721                        activity.announcePgp(
1722                                conversation.getAccount(),
1723                                conversation,
1724                                null,
1725                                activity.onOpenPGPKeyPublished);
1726                    }
1727                } else {
1728                    activity.showInstallPgpDialog();
1729                    updated = false;
1730                }
1731                break;
1732            case R.id.encryption_choice_axolotl:
1733                Log.d(
1734                        Config.LOGTAG,
1735                        AxolotlService.getLogprefix(conversation.getAccount())
1736                                + "Enabled axolotl for Contact "
1737                                + conversation.getContact().getJid());
1738                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1739                item.setChecked(true);
1740                break;
1741            default:
1742                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1743                break;
1744        }
1745        if (updated) {
1746            activity.xmppConnectionService.updateConversation(conversation);
1747        }
1748        updateChatMsgHint();
1749        getActivity().invalidateOptionsMenu();
1750        activity.refreshUi();
1751    }
1752
1753    public void attachFile(final int attachmentChoice) {
1754        attachFile(attachmentChoice, true);
1755    }
1756
1757    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1758        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1759            if (!hasPermissions(
1760                    attachmentChoice,
1761                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1762                    Manifest.permission.RECORD_AUDIO)) {
1763                return;
1764            }
1765        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1766                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1767            if (!hasPermissions(
1768                    attachmentChoice,
1769                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1770                    Manifest.permission.CAMERA)) {
1771                return;
1772            }
1773        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1774            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1775                return;
1776            }
1777        }
1778        if (updateRecentlyUsed) {
1779            storeRecentlyUsedQuickAction(attachmentChoice);
1780        }
1781        final int encryption = conversation.getNextEncryption();
1782        final int mode = conversation.getMode();
1783        if (encryption == Message.ENCRYPTION_PGP) {
1784            if (activity.hasPgp()) {
1785                if (mode == Conversation.MODE_SINGLE
1786                        && conversation.getContact().getPgpKeyId() != 0) {
1787                    activity.xmppConnectionService
1788                            .getPgpEngine()
1789                            .hasKey(
1790                                    conversation.getContact(),
1791                                    new UiCallback<Contact>() {
1792
1793                                        @Override
1794                                        public void userInputRequired(
1795                                                PendingIntent pi, Contact contact) {
1796                                            startPendingIntent(pi, attachmentChoice);
1797                                        }
1798
1799                                        @Override
1800                                        public void success(Contact contact) {
1801                                            invokeAttachFileIntent(attachmentChoice);
1802                                        }
1803
1804                                        @Override
1805                                        public void error(int error, Contact contact) {
1806                                            activity.replaceToast(getString(error));
1807                                        }
1808                                    });
1809                } else if (mode == Conversation.MODE_MULTI
1810                        && conversation.getMucOptions().pgpKeysInUse()) {
1811                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1812                        Toast warning =
1813                                Toast.makeText(
1814                                        getActivity(),
1815                                        R.string.missing_public_keys,
1816                                        Toast.LENGTH_LONG);
1817                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1818                        warning.show();
1819                    }
1820                    invokeAttachFileIntent(attachmentChoice);
1821                } else {
1822                    showNoPGPKeyDialog(
1823                            false,
1824                            (dialog, which) -> {
1825                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1826                                activity.xmppConnectionService.updateConversation(conversation);
1827                                invokeAttachFileIntent(attachmentChoice);
1828                            });
1829                }
1830            } else {
1831                activity.showInstallPgpDialog();
1832            }
1833        } else {
1834            invokeAttachFileIntent(attachmentChoice);
1835        }
1836    }
1837
1838    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1839        try {
1840            activity.getPreferences()
1841                    .edit()
1842                    .putString(
1843                            RECENTLY_USED_QUICK_ACTION,
1844                            SendButtonAction.of(attachmentChoice).toString())
1845                    .apply();
1846        } catch (IllegalArgumentException e) {
1847            // just do not save
1848        }
1849    }
1850
1851    @Override
1852    public void onRequestPermissionsResult(
1853            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1854        final PermissionUtils.PermissionResult permissionResult =
1855                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1856        if (grantResults.length > 0) {
1857            if (allGranted(permissionResult.grantResults)) {
1858                switch (requestCode) {
1859                    case REQUEST_START_DOWNLOAD:
1860                        if (this.mPendingDownloadableMessage != null) {
1861                            startDownloadable(this.mPendingDownloadableMessage);
1862                        }
1863                        break;
1864                    case REQUEST_ADD_EDITOR_CONTENT:
1865                        if (this.mPendingEditorContent != null) {
1866                            attachEditorContentToConversation(this.mPendingEditorContent);
1867                        }
1868                        break;
1869                    case REQUEST_COMMIT_ATTACHMENTS:
1870                        commitAttachments();
1871                        break;
1872                    case REQUEST_START_AUDIO_CALL:
1873                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1874                        break;
1875                    case REQUEST_START_VIDEO_CALL:
1876                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1877                        break;
1878                    default:
1879                        attachFile(requestCode);
1880                        break;
1881                }
1882            } else {
1883                @StringRes int res;
1884                String firstDenied =
1885                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
1886                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1887                    res = R.string.no_microphone_permission;
1888                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1889                    res = R.string.no_camera_permission;
1890                } else {
1891                    res = R.string.no_storage_permission;
1892                }
1893                Toast.makeText(
1894                                getActivity(),
1895                                getString(res, getString(R.string.app_name)),
1896                                Toast.LENGTH_SHORT)
1897                        .show();
1898            }
1899        }
1900        if (writeGranted(grantResults, permissions)) {
1901            if (activity != null && activity.xmppConnectionService != null) {
1902                activity.xmppConnectionService.getBitmapCache().evictAll();
1903                activity.xmppConnectionService.restartFileObserver();
1904            }
1905            refresh();
1906        }
1907        if (cameraGranted(grantResults, permissions) || audioGranted(grantResults, permissions)) {
1908            XmppConnectionService.toggleForegroundService(activity);
1909        }
1910    }
1911
1912    public void startDownloadable(Message message) {
1913        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1914            this.mPendingDownloadableMessage = message;
1915            return;
1916        }
1917        Transferable transferable = message.getTransferable();
1918        if (transferable != null) {
1919            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1920                createNewConnection(message);
1921                return;
1922            }
1923            if (!transferable.start()) {
1924                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1925                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1926                        .show();
1927            }
1928        } else if (message.treatAsDownloadable()
1929                || message.hasFileOnRemoteHost()
1930                || MessageUtils.unInitiatedButKnownSize(message)) {
1931            createNewConnection(message);
1932        } else {
1933            Log.d(
1934                    Config.LOGTAG,
1935                    message.getConversation().getAccount() + ": unable to start downloadable");
1936        }
1937    }
1938
1939    private void createNewConnection(final Message message) {
1940        if (!activity.xmppConnectionService.hasInternetConnection()) {
1941            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1942                    .show();
1943            return;
1944        }
1945        activity.xmppConnectionService
1946                .getHttpConnectionManager()
1947                .createNewDownloadConnection(message, true);
1948    }
1949
1950    @SuppressLint("InflateParams")
1951    protected void clearHistoryDialog(final Conversation conversation) {
1952        final MaterialAlertDialogBuilder builder =
1953                new MaterialAlertDialogBuilder(requireActivity());
1954        builder.setTitle(R.string.clear_conversation_history);
1955        final View dialogView =
1956                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1957        final CheckBox endConversationCheckBox =
1958                dialogView.findViewById(R.id.end_conversation_checkbox);
1959        builder.setView(dialogView);
1960        builder.setNegativeButton(getString(R.string.cancel), null);
1961        builder.setPositiveButton(
1962                getString(R.string.confirm),
1963                (dialog, which) -> {
1964                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
1965                    if (endConversationCheckBox.isChecked()) {
1966                        this.activity.xmppConnectionService.archiveConversation(conversation);
1967                        this.activity.onConversationArchived(conversation);
1968                    } else {
1969                        activity.onConversationsListItemUpdated();
1970                        refresh();
1971                    }
1972                });
1973        builder.create().show();
1974    }
1975
1976    protected void muteConversationDialog(final Conversation conversation) {
1977        final MaterialAlertDialogBuilder builder =
1978                new MaterialAlertDialogBuilder(requireActivity());
1979        builder.setTitle(R.string.disable_notifications);
1980        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1981        final CharSequence[] labels = new CharSequence[durations.length];
1982        for (int i = 0; i < durations.length; ++i) {
1983            if (durations[i] == -1) {
1984                labels[i] = getString(R.string.until_further_notice);
1985            } else {
1986                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
1987            }
1988        }
1989        builder.setItems(
1990                labels,
1991                (dialog, which) -> {
1992                    final long till;
1993                    if (durations[which] == -1) {
1994                        till = Long.MAX_VALUE;
1995                    } else {
1996                        till = System.currentTimeMillis() + (durations[which] * 1000L);
1997                    }
1998                    conversation.setMutedTill(till);
1999                    activity.xmppConnectionService.updateConversation(conversation);
2000                    activity.onConversationsListItemUpdated();
2001                    refresh();
2002                    requireActivity().invalidateOptionsMenu();
2003                });
2004        builder.create().show();
2005    }
2006
2007    private boolean hasPermissions(int requestCode, List<String> permissions) {
2008        final List<String> missingPermissions = new ArrayList<>();
2009        for (String permission : permissions) {
2010            if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
2011                            || Config.ONLY_INTERNAL_STORAGE)
2012                    && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2013                continue;
2014            }
2015            if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2016                missingPermissions.add(permission);
2017            }
2018        }
2019        if (missingPermissions.size() == 0) {
2020            return true;
2021        } else {
2022            requestPermissions(missingPermissions.toArray(new String[0]), requestCode);
2023            return false;
2024        }
2025    }
2026
2027    private boolean hasPermissions(int requestCode, String... permissions) {
2028        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2029    }
2030
2031    public void unMuteConversation(final Conversation conversation) {
2032        conversation.setMutedTill(0);
2033        this.activity.xmppConnectionService.updateConversation(conversation);
2034        this.activity.onConversationsListItemUpdated();
2035        refresh();
2036        requireActivity().invalidateOptionsMenu();
2037    }
2038
2039    protected void invokeAttachFileIntent(final int attachmentChoice) {
2040        Intent intent = new Intent();
2041        boolean chooser = false;
2042        switch (attachmentChoice) {
2043            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2044                intent.setAction(Intent.ACTION_GET_CONTENT);
2045                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2046                intent.setType("image/*");
2047                chooser = true;
2048                break;
2049            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2050                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2051                break;
2052            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2053                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2054                pendingTakePhotoUri.push(uri);
2055                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2056                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2057                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2058                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2059                break;
2060            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2061                chooser = true;
2062                intent.setType("*/*");
2063                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2064                intent.addCategory(Intent.CATEGORY_OPENABLE);
2065                intent.setAction(Intent.ACTION_GET_CONTENT);
2066                break;
2067            case ATTACHMENT_CHOICE_RECORD_VOICE:
2068                intent = new Intent(getActivity(), RecordingActivity.class);
2069                break;
2070            case ATTACHMENT_CHOICE_LOCATION:
2071                intent = GeoHelper.getFetchIntent(activity);
2072                break;
2073        }
2074        final Context context = getActivity();
2075        if (context == null) {
2076            return;
2077        }
2078        try {
2079            if (chooser) {
2080                startActivityForResult(
2081                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2082                        attachmentChoice);
2083            } else {
2084                startActivityForResult(intent, attachmentChoice);
2085            }
2086        } catch (final ActivityNotFoundException e) {
2087            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2088        }
2089    }
2090
2091    @Override
2092    public void onResume() {
2093        super.onResume();
2094        binding.messagesView.post(this::fireReadEvent);
2095    }
2096
2097    private void fireReadEvent() {
2098        if (activity != null && this.conversation != null) {
2099            String uuid = getLastVisibleMessageUuid();
2100            if (uuid != null) {
2101                activity.onConversationRead(this.conversation, uuid);
2102            }
2103        }
2104    }
2105
2106    private String getLastVisibleMessageUuid() {
2107        if (binding == null) {
2108            return null;
2109        }
2110        synchronized (this.messageList) {
2111            int pos = binding.messagesView.getLastVisiblePosition();
2112            if (pos >= 0) {
2113                Message message = null;
2114                for (int i = pos; i >= 0; --i) {
2115                    try {
2116                        message = (Message) binding.messagesView.getItemAtPosition(i);
2117                    } catch (IndexOutOfBoundsException e) {
2118                        // should not happen if we synchronize properly. however if that fails we
2119                        // just gonna try item -1
2120                        continue;
2121                    }
2122                    if (message.getType() != Message.TYPE_STATUS) {
2123                        break;
2124                    }
2125                }
2126                if (message != null) {
2127                    return message.getUuid();
2128                }
2129            }
2130        }
2131        return null;
2132    }
2133
2134    private void openWith(final Message message) {
2135        if (message.isGeoUri()) {
2136            GeoHelper.view(getActivity(), message);
2137        } else {
2138            final DownloadableFile file =
2139                    activity.xmppConnectionService.getFileBackend().getFile(message);
2140            ViewUtil.view(activity, file);
2141        }
2142    }
2143
2144    private void addReaction(final Message message) {
2145        activity.addReaction(
2146                message,
2147                reactions -> {
2148                    if (activity.xmppConnectionService.sendReactions(message, reactions)) {
2149                        return;
2150                    }
2151                    Toast.makeText(activity, R.string.could_not_add_reaction, Toast.LENGTH_LONG)
2152                            .show();
2153                });
2154    }
2155
2156    private void reportMessage(final Message message) {
2157        BlockContactDialog.show(activity, conversation.getContact(), message.getServerMsgId());
2158    }
2159
2160    private void showErrorMessage(final Message message) {
2161        final MaterialAlertDialogBuilder builder =
2162                new MaterialAlertDialogBuilder(requireActivity());
2163        builder.setTitle(R.string.error_message);
2164        final String errorMessage = message.getErrorMessage();
2165        final String[] errorMessageParts =
2166                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2167        final String displayError;
2168        if (errorMessageParts.length == 2) {
2169            displayError = errorMessageParts[1];
2170        } else {
2171            displayError = errorMessage;
2172        }
2173        builder.setMessage(displayError);
2174        builder.setNegativeButton(
2175                R.string.copy_to_clipboard,
2176                (dialog, which) -> {
2177                    activity.copyTextToClipboard(displayError, R.string.error_message);
2178                    Toast.makeText(
2179                                    activity,
2180                                    R.string.error_message_copied_to_clipboard,
2181                                    Toast.LENGTH_SHORT)
2182                            .show();
2183                });
2184        builder.setPositiveButton(R.string.confirm, null);
2185        builder.create().show();
2186    }
2187
2188    private void deleteFile(final Message message) {
2189        final MaterialAlertDialogBuilder builder =
2190                new MaterialAlertDialogBuilder(requireActivity());
2191        builder.setNegativeButton(R.string.cancel, null);
2192        builder.setTitle(R.string.delete_file_dialog);
2193        builder.setMessage(R.string.delete_file_dialog_msg);
2194        builder.setPositiveButton(
2195                R.string.confirm,
2196                (dialog, which) -> {
2197                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2198                        message.setDeleted(true);
2199                        activity.xmppConnectionService.evictPreview(message.getUuid());
2200                        activity.xmppConnectionService.updateMessage(message, false);
2201                        activity.onConversationsListItemUpdated();
2202                        refresh();
2203                    }
2204                });
2205        builder.create().show();
2206    }
2207
2208    private void resendMessage(final Message message, final boolean forceP2P) {
2209        if (message.isFileOrImage()) {
2210            if (!(message.getConversation() instanceof Conversation conversation)) {
2211                return;
2212            }
2213            final DownloadableFile file =
2214                    activity.xmppConnectionService.getFileBackend().getFile(message);
2215            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2216                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2217                if (!message.hasFileOnRemoteHost()
2218                        && xmppConnection != null
2219                        && conversation.getMode() == Conversational.MODE_SINGLE
2220                        && (!xmppConnection
2221                                        .getFeatures()
2222                                        .httpUpload(message.getFileParams().getSize())
2223                                || forceP2P)) {
2224                    activity.selectPresence(
2225                            conversation,
2226                            () -> {
2227                                message.setCounterpart(conversation.getNextCounterpart());
2228                                activity.xmppConnectionService.resendFailedMessages(
2229                                        message, forceP2P);
2230                                new Handler()
2231                                        .post(
2232                                                () -> {
2233                                                    int size = messageList.size();
2234                                                    this.binding.messagesView.setSelection(
2235                                                            size - 1);
2236                                                });
2237                            });
2238                    return;
2239                }
2240            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2241                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2242                return;
2243            } else {
2244                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2245                message.setDeleted(true);
2246                activity.xmppConnectionService.updateMessage(message, false);
2247                activity.onConversationsListItemUpdated();
2248                refresh();
2249                return;
2250            }
2251        }
2252        activity.xmppConnectionService.resendFailedMessages(message, false);
2253        new Handler()
2254                .post(
2255                        () -> {
2256                            int size = messageList.size();
2257                            this.binding.messagesView.setSelection(size - 1);
2258                        });
2259    }
2260
2261    private void cancelTransmission(Message message) {
2262        Transferable transferable = message.getTransferable();
2263        if (transferable != null) {
2264            transferable.cancel();
2265        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2266            activity.xmppConnectionService.markMessage(
2267                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2268        }
2269    }
2270
2271    private void retryDecryption(Message message) {
2272        message.setEncryption(Message.ENCRYPTION_PGP);
2273        activity.onConversationsListItemUpdated();
2274        refresh();
2275        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2276    }
2277
2278    public void privateMessageWith(final Jid counterpart) {
2279        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2280            activity.xmppConnectionService.sendChatState(conversation);
2281        }
2282        this.binding.textinput.setText("");
2283        this.conversation.setNextCounterpart(counterpart);
2284        updateChatMsgHint();
2285        updateSendButton();
2286        updateEditablity();
2287    }
2288
2289    private void correctMessage(final Message message) {
2290        this.conversation.setCorrectingMessage(message);
2291        final Editable editable = binding.textinput.getText();
2292        this.conversation.setDraftMessage(editable.toString());
2293        this.binding.textinput.setText("");
2294        this.binding.textinput.append(message.getBody());
2295    }
2296
2297    private void highlightInConference(String nick) {
2298        final Editable editable = this.binding.textinput.getText();
2299        String oldString = editable.toString().trim();
2300        final int pos = this.binding.textinput.getSelectionStart();
2301        if (oldString.isEmpty() || pos == 0) {
2302            editable.insert(0, nick + ": ");
2303        } else {
2304            final char before = editable.charAt(pos - 1);
2305            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2306            if (before == '\n') {
2307                editable.insert(pos, nick + ": ");
2308            } else {
2309                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2310                    if (NickValidityChecker.check(
2311                            conversation,
2312                            Arrays.asList(
2313                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2314                        editable.insert(pos - 2, ", " + nick);
2315                        return;
2316                    }
2317                }
2318                editable.insert(
2319                        pos,
2320                        (Character.isWhitespace(before) ? "" : " ")
2321                                + nick
2322                                + (Character.isWhitespace(after) ? "" : " "));
2323                if (Character.isWhitespace(after)) {
2324                    this.binding.textinput.setSelection(
2325                            this.binding.textinput.getSelectionStart() + 1);
2326                }
2327            }
2328        }
2329    }
2330
2331    @Override
2332    public void startActivityForResult(Intent intent, int requestCode) {
2333        final Activity activity = getActivity();
2334        if (activity instanceof ConversationsActivity) {
2335            ((ConversationsActivity) activity).clearPendingViewIntent();
2336        }
2337        super.startActivityForResult(intent, requestCode);
2338    }
2339
2340    @Override
2341    public void onSaveInstanceState(@NonNull Bundle outState) {
2342        super.onSaveInstanceState(outState);
2343        if (conversation != null) {
2344            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2345            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2346            final Uri uri = pendingTakePhotoUri.peek();
2347            if (uri != null) {
2348                outState.putString(STATE_PHOTO_URI, uri.toString());
2349            }
2350            final ScrollState scrollState = getScrollPosition();
2351            if (scrollState != null) {
2352                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2353            }
2354            final ArrayList<Attachment> attachments =
2355                    mediaPreviewAdapter == null
2356                            ? new ArrayList<>()
2357                            : mediaPreviewAdapter.getAttachments();
2358            if (attachments.size() > 0) {
2359                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2360            }
2361        }
2362    }
2363
2364    @Override
2365    public void onActivityCreated(Bundle savedInstanceState) {
2366        super.onActivityCreated(savedInstanceState);
2367        if (savedInstanceState == null) {
2368            return;
2369        }
2370        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2371        ArrayList<Attachment> attachments =
2372                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2373        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2374        if (uuid != null) {
2375            QuickLoader.set(uuid);
2376            this.pendingConversationsUuid.push(uuid);
2377            if (attachments != null && attachments.size() > 0) {
2378                this.pendingMediaPreviews.push(attachments);
2379            }
2380            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2381            if (takePhotoUri != null) {
2382                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2383            }
2384            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2385        }
2386    }
2387
2388    @Override
2389    public void onStart() {
2390        super.onStart();
2391        if (this.reInitRequiredOnStart && this.conversation != null) {
2392            final Bundle extras = pendingExtras.pop();
2393            reInit(this.conversation, extras != null);
2394            if (extras != null) {
2395                processExtras(extras);
2396            }
2397        } else if (conversation == null
2398                && activity != null
2399                && activity.xmppConnectionService != null) {
2400            final String uuid = pendingConversationsUuid.pop();
2401            Log.d(
2402                    Config.LOGTAG,
2403                    "ConversationFragment.onStart() - activity was bound but no conversation"
2404                            + " loaded. uuid="
2405                            + uuid);
2406            if (uuid != null) {
2407                findAndReInitByUuidOrArchive(uuid);
2408            }
2409        }
2410    }
2411
2412    @Override
2413    public void onStop() {
2414        super.onStop();
2415        final Activity activity = getActivity();
2416        messageListAdapter.unregisterListenerInAudioPlayer();
2417        if (activity == null || !activity.isChangingConfigurations()) {
2418            hideSoftKeyboard(activity);
2419            messageListAdapter.stopAudioPlayer();
2420        }
2421        if (this.conversation != null) {
2422            final String msg = this.binding.textinput.getText().toString();
2423            storeNextMessage(msg);
2424            updateChatState(this.conversation, msg);
2425            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2426        }
2427        this.reInitRequiredOnStart = true;
2428    }
2429
2430    private void updateChatState(final Conversation conversation, final String msg) {
2431        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2432        Account.State status = conversation.getAccount().getStatus();
2433        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2434            activity.xmppConnectionService.sendChatState(conversation);
2435        }
2436    }
2437
2438    private void saveMessageDraftStopAudioPlayer() {
2439        final Conversation previousConversation = this.conversation;
2440        if (this.activity == null || this.binding == null || previousConversation == null) {
2441            return;
2442        }
2443        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2444        final String msg = this.binding.textinput.getText().toString();
2445        storeNextMessage(msg);
2446        updateChatState(this.conversation, msg);
2447        messageListAdapter.stopAudioPlayer();
2448        mediaPreviewAdapter.clearPreviews();
2449        toggleInputMethod();
2450    }
2451
2452    public void reInit(final Conversation conversation, final Bundle extras) {
2453        QuickLoader.set(conversation.getUuid());
2454        final boolean changedConversation = this.conversation != conversation;
2455        if (changedConversation) {
2456            this.saveMessageDraftStopAudioPlayer();
2457        }
2458        this.clearPending();
2459        if (this.reInit(conversation, extras != null)) {
2460            if (extras != null) {
2461                processExtras(extras);
2462            }
2463            this.reInitRequiredOnStart = false;
2464        } else {
2465            this.reInitRequiredOnStart = true;
2466            pendingExtras.push(extras);
2467        }
2468        resetUnreadMessagesCount();
2469    }
2470
2471    private void reInit(Conversation conversation) {
2472        reInit(conversation, false);
2473    }
2474
2475    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2476        if (conversation == null) {
2477            return false;
2478        }
2479        this.conversation = conversation;
2480        // once we set the conversation all is good and it will automatically do the right thing in
2481        // onStart()
2482        if (this.activity == null || this.binding == null) {
2483            return false;
2484        }
2485
2486        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2487            activity.onConversationArchived(this.conversation);
2488            return false;
2489        }
2490
2491        stopScrolling();
2492        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2493
2494        if (this.conversation.isRead() && hasExtras) {
2495            Log.d(Config.LOGTAG, "trimming conversation");
2496            this.conversation.trim();
2497        }
2498
2499        setupIme();
2500
2501        final boolean scrolledToBottomAndNoPending =
2502                this.scrolledToBottom() && pendingScrollState.peek() == null;
2503
2504        this.binding.textSendButton.setContentDescription(
2505                activity.getString(R.string.send_message_to_x, conversation.getName()));
2506        this.binding.textinput.setKeyboardListener(null);
2507        final boolean participating =
2508                conversation.getMode() == Conversational.MODE_SINGLE
2509                        || conversation.getMucOptions().participating();
2510        if (participating) {
2511            this.binding.textinput.setText(this.conversation.getNextMessage());
2512            this.binding.textinput.setSelection(this.binding.textinput.length());
2513        } else {
2514            this.binding.textinput.setText(MessageUtils.EMPTY_STRING);
2515        }
2516        this.binding.textinput.setKeyboardListener(this);
2517        messageListAdapter.updatePreferences();
2518        refresh(false);
2519        activity.invalidateOptionsMenu();
2520        this.conversation.messagesLoaded.set(true);
2521        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2522
2523        if (hasExtras || scrolledToBottomAndNoPending) {
2524            resetUnreadMessagesCount();
2525            synchronized (this.messageList) {
2526                Log.d(Config.LOGTAG, "jump to first unread message");
2527                final Message first = conversation.getFirstUnreadMessage();
2528                final int bottom = Math.max(0, this.messageList.size() - 1);
2529                final int pos;
2530                final boolean jumpToBottom;
2531                if (first == null) {
2532                    pos = bottom;
2533                    jumpToBottom = true;
2534                } else {
2535                    int i = getIndexOf(first.getUuid(), this.messageList);
2536                    pos = i < 0 ? bottom : i;
2537                    jumpToBottom = false;
2538                }
2539                setSelection(pos, jumpToBottom);
2540            }
2541        }
2542
2543        this.binding.messagesView.post(this::fireReadEvent);
2544        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2545        // layout which might be unnecessary since we can *see* it
2546        activity.xmppConnectionService
2547                .getNotificationService()
2548                .setOpenConversation(this.conversation);
2549        return true;
2550    }
2551
2552    private void resetUnreadMessagesCount() {
2553        lastMessageUuid = null;
2554        hideUnreadMessagesCount();
2555    }
2556
2557    private void hideUnreadMessagesCount() {
2558        if (this.binding == null) {
2559            return;
2560        }
2561        this.binding.scrollToBottomButton.setEnabled(false);
2562        this.binding.scrollToBottomButton.hide();
2563        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2564    }
2565
2566    private void setSelection(int pos, boolean jumpToBottom) {
2567        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2568        this.binding.messagesView.post(
2569                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2570        this.binding.messagesView.post(this::fireReadEvent);
2571    }
2572
2573    private boolean scrolledToBottom() {
2574        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2575    }
2576
2577    private void processExtras(final Bundle extras) {
2578        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2579        final String text = extras.getString(Intent.EXTRA_TEXT);
2580        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2581        final String postInitAction =
2582                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2583        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2584        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2585        final boolean doNotAppend =
2586                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2587        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2588        final List<Uri> uris = extractUris(extras);
2589        if (uris != null && uris.size() > 0) {
2590            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2591                mediaPreviewAdapter.addMediaPreviews(
2592                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2593            } else {
2594                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2595                mediaPreviewAdapter.addMediaPreviews(
2596                        Attachment.of(getActivity(), cleanedUris, type));
2597            }
2598            toggleInputMethod();
2599            return;
2600        }
2601        if (nick != null) {
2602            if (pm) {
2603                Jid jid = conversation.getJid();
2604                try {
2605                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2606                    privateMessageWith(next);
2607                } catch (final IllegalArgumentException ignored) {
2608                    // do nothing
2609                }
2610            } else {
2611                final MucOptions mucOptions = conversation.getMucOptions();
2612                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2613                    highlightInConference(nick);
2614                }
2615            }
2616        } else {
2617            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2618                mediaPreviewAdapter.addMediaPreviews(
2619                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2620                toggleInputMethod();
2621                return;
2622            } else if (text != null && asQuote) {
2623                quoteText(text);
2624            } else {
2625                appendText(text, doNotAppend);
2626            }
2627        }
2628        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2629            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2630            return;
2631        }
2632        final Message message =
2633                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2634        if (message != null) {
2635            startDownloadable(message);
2636        }
2637    }
2638
2639    private List<Uri> extractUris(final Bundle extras) {
2640        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2641        if (uris != null) {
2642            return uris;
2643        }
2644        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2645        if (uri != null) {
2646            return Collections.singletonList(uri);
2647        } else {
2648            return null;
2649        }
2650    }
2651
2652    private List<Uri> cleanUris(final List<Uri> uris) {
2653        final Iterator<Uri> iterator = uris.iterator();
2654        while (iterator.hasNext()) {
2655            final Uri uri = iterator.next();
2656            if (FileBackend.dangerousFile(uri)) {
2657                iterator.remove();
2658                Toast.makeText(
2659                                requireActivity(),
2660                                R.string.security_violation_not_attaching_file,
2661                                Toast.LENGTH_SHORT)
2662                        .show();
2663            }
2664        }
2665        return uris;
2666    }
2667
2668    private boolean showBlockSubmenu(View view) {
2669        final Jid jid = conversation.getJid();
2670        final boolean showReject =
2671                !conversation.isWithStranger()
2672                        && conversation
2673                                .getContact()
2674                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2675        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2676        popupMenu.inflate(R.menu.block);
2677        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2678        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2679        popupMenu.setOnMenuItemClickListener(
2680                menuItem -> {
2681                    Blockable blockable;
2682                    switch (menuItem.getItemId()) {
2683                        case R.id.reject:
2684                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2685                                    conversation.getContact());
2686                            updateSnackBar(conversation);
2687                            return true;
2688                        case R.id.block_domain:
2689                            blockable =
2690                                    conversation
2691                                            .getAccount()
2692                                            .getRoster()
2693                                            .getContact(jid.getDomain());
2694                            break;
2695                        default:
2696                            blockable = conversation;
2697                    }
2698                    BlockContactDialog.show(activity, blockable);
2699                    return true;
2700                });
2701        popupMenu.show();
2702        return true;
2703    }
2704
2705    private void updateSnackBar(final Conversation conversation) {
2706        final Account account = conversation.getAccount();
2707        final XmppConnection connection = account.getXmppConnection();
2708        final int mode = conversation.getMode();
2709        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2710        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2711            return;
2712        }
2713        if (account.getStatus() == Account.State.DISABLED) {
2714            showSnackbar(
2715                    R.string.this_account_is_disabled,
2716                    R.string.enable,
2717                    this.mEnableAccountListener);
2718        } else if (account.getStatus() == Account.State.LOGGED_OUT) {
2719            showSnackbar(
2720                    R.string.this_account_is_logged_out,
2721                    R.string.log_in,
2722                    this.mEnableAccountListener);
2723        } else if (conversation.isBlocked()) {
2724            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2725        } else if (contact != null
2726                && !contact.showInRoster()
2727                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2728            showSnackbar(
2729                    R.string.contact_added_you,
2730                    R.string.add_back,
2731                    this.mAddBackClickListener,
2732                    this.mLongPressBlockListener);
2733        } else if (contact != null
2734                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2735            showSnackbar(
2736                    R.string.contact_asks_for_presence_subscription,
2737                    R.string.allow,
2738                    this.mAllowPresenceSubscription,
2739                    this.mLongPressBlockListener);
2740        } else if (mode == Conversation.MODE_MULTI
2741                && !conversation.getMucOptions().online()
2742                && account.getStatus() == Account.State.ONLINE) {
2743            switch (conversation.getMucOptions().getError()) {
2744                case NICK_IN_USE:
2745                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2746                    break;
2747                case NO_RESPONSE:
2748                    showSnackbar(R.string.joining_conference, 0, null);
2749                    break;
2750                case SERVER_NOT_FOUND:
2751                    if (conversation.receivedMessagesCount() > 0) {
2752                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2753                    } else {
2754                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2755                    }
2756                    break;
2757                case REMOTE_SERVER_TIMEOUT:
2758                    if (conversation.receivedMessagesCount() > 0) {
2759                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2760                    } else {
2761                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2762                    }
2763                    break;
2764                case PASSWORD_REQUIRED:
2765                    showSnackbar(
2766                            R.string.conference_requires_password,
2767                            R.string.enter_password,
2768                            enterPassword);
2769                    break;
2770                case BANNED:
2771                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2772                    break;
2773                case MEMBERS_ONLY:
2774                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2775                    break;
2776                case RESOURCE_CONSTRAINT:
2777                    showSnackbar(
2778                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2779                    break;
2780                case KICKED:
2781                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2782                    break;
2783                case TECHNICAL_PROBLEMS:
2784                    showSnackbar(
2785                            R.string.conference_technical_problems, R.string.try_again, joinMuc);
2786                    break;
2787                case UNKNOWN:
2788                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2789                    break;
2790                case INVALID_NICK:
2791                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2792                case SHUTDOWN:
2793                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2794                    break;
2795                case DESTROYED:
2796                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2797                    break;
2798                case NON_ANONYMOUS:
2799                    showSnackbar(
2800                            R.string.group_chat_will_make_your_jabber_id_public,
2801                            R.string.join,
2802                            acceptJoin);
2803                    break;
2804                default:
2805                    hideSnackbar();
2806                    break;
2807            }
2808        } else if (account.hasPendingPgpIntent(conversation)) {
2809            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2810        } else if (connection != null
2811                && connection.getFeatures().blocking()
2812                && conversation.countMessages() != 0
2813                && !conversation.isBlocked()
2814                && conversation.isWithStranger()) {
2815            showSnackbar(
2816                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2817        } else {
2818            hideSnackbar();
2819        }
2820    }
2821
2822    @Override
2823    public void refresh() {
2824        if (this.binding == null) {
2825            Log.d(
2826                    Config.LOGTAG,
2827                    "ConversationFragment.refresh() skipped updated because view binding was null");
2828            return;
2829        }
2830        if (this.conversation != null
2831                && this.activity != null
2832                && this.activity.xmppConnectionService != null) {
2833            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2834                activity.onConversationArchived(this.conversation);
2835                return;
2836            }
2837        }
2838        this.refresh(true);
2839    }
2840
2841    private void refresh(boolean notifyConversationRead) {
2842        synchronized (this.messageList) {
2843            if (this.conversation != null) {
2844                conversation.populateWithMessages(this.messageList);
2845                updateSnackBar(conversation);
2846                updateStatusMessages();
2847                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2848                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2849                    binding.unreadCountCustomView.setUnreadCount(
2850                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2851                }
2852                this.messageListAdapter.notifyDataSetChanged();
2853                updateChatMsgHint();
2854                if (notifyConversationRead && activity != null) {
2855                    binding.messagesView.post(this::fireReadEvent);
2856                }
2857                updateSendButton();
2858                updateEditablity();
2859            }
2860        }
2861    }
2862
2863    protected void messageSent() {
2864        mSendingPgpMessage.set(false);
2865        this.binding.textinput.setText("");
2866        if (conversation.setCorrectingMessage(null)) {
2867            this.binding.textinput.append(conversation.getDraftMessage());
2868            conversation.setDraftMessage(null);
2869        }
2870        storeNextMessage();
2871        updateChatMsgHint();
2872        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2873        final boolean prefScrollToBottom =
2874                p.getBoolean(
2875                        "scroll_to_bottom",
2876                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2877        if (prefScrollToBottom || scrolledToBottom()) {
2878            new Handler()
2879                    .post(
2880                            () -> {
2881                                int size = messageList.size();
2882                                this.binding.messagesView.setSelection(size - 1);
2883                            });
2884        }
2885    }
2886
2887    private boolean storeNextMessage() {
2888        return storeNextMessage(this.binding.textinput.getText().toString());
2889    }
2890
2891    private boolean storeNextMessage(String msg) {
2892        final boolean participating =
2893                conversation.getMode() == Conversational.MODE_SINGLE
2894                        || conversation.getMucOptions().participating();
2895        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
2896                && participating
2897                && this.conversation.setNextMessage(msg)) {
2898            this.activity.xmppConnectionService.updateConversation(this.conversation);
2899            return true;
2900        }
2901        return false;
2902    }
2903
2904    public void doneSendingPgpMessage() {
2905        mSendingPgpMessage.set(false);
2906    }
2907
2908    public long getMaxHttpUploadSize(Conversation conversation) {
2909        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2910        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2911    }
2912
2913    private void updateEditablity() {
2914        boolean canWrite =
2915                this.conversation.getMode() == Conversation.MODE_SINGLE
2916                        || this.conversation.getMucOptions().participating()
2917                        || this.conversation.getNextCounterpart() != null;
2918        this.binding.textinput.setFocusable(canWrite);
2919        this.binding.textinput.setFocusableInTouchMode(canWrite);
2920        this.binding.textSendButton.setEnabled(canWrite);
2921        this.binding.textinput.setCursorVisible(canWrite);
2922        this.binding.textinput.setEnabled(canWrite);
2923    }
2924
2925    public void updateSendButton() {
2926        boolean hasAttachments =
2927                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2928        final Conversation c = this.conversation;
2929        final Presence.Status status;
2930        final String text =
2931                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2932        final SendButtonAction action;
2933        if (hasAttachments) {
2934            action = SendButtonAction.TEXT;
2935        } else {
2936            action = SendButtonTool.getAction(getActivity(), c, text);
2937        }
2938        if (c.getAccount().getStatus() == Account.State.ONLINE) {
2939            if (activity != null
2940                    && activity.xmppConnectionService != null
2941                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2942                status = Presence.Status.OFFLINE;
2943            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2944                status = c.getContact().getShownStatus();
2945            } else {
2946                status =
2947                        c.getMucOptions().online()
2948                                ? Presence.Status.ONLINE
2949                                : Presence.Status.OFFLINE;
2950            }
2951        } else {
2952            status = Presence.Status.OFFLINE;
2953        }
2954        this.binding.textSendButton.setTag(action);
2955        this.binding.textSendButton.setIconResource(
2956                SendButtonTool.getSendButtonImageResource(action));
2957        this.binding.textSendButton.setIconTint(
2958                ColorStateList.valueOf(
2959                        SendButtonTool.getSendButtonColor(this.binding.textSendButton, status)));
2960        // TODO send button color
2961        final Activity activity = getActivity();
2962        if (activity != null) {}
2963    }
2964
2965    protected void updateStatusMessages() {
2966        DateSeparator.addAll(this.messageList);
2967        if (showLoadMoreMessages(conversation)) {
2968            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2969        }
2970        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2971            ChatState state = conversation.getIncomingChatState();
2972            if (state == ChatState.COMPOSING) {
2973                this.messageList.add(
2974                        Message.createStatusMessage(
2975                                conversation,
2976                                getString(R.string.contact_is_typing, conversation.getName())));
2977            } else if (state == ChatState.PAUSED) {
2978                this.messageList.add(
2979                        Message.createStatusMessage(
2980                                conversation,
2981                                getString(
2982                                        R.string.contact_has_stopped_typing,
2983                                        conversation.getName())));
2984            } else {
2985                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2986                    final Message message = this.messageList.get(i);
2987                    if (message.getType() != Message.TYPE_STATUS) {
2988                        if (message.getStatus() == Message.STATUS_RECEIVED) {
2989                            return;
2990                        } else {
2991                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2992                                this.messageList.add(
2993                                        i + 1,
2994                                        Message.createStatusMessage(
2995                                                conversation,
2996                                                getString(
2997                                                        R.string.contact_has_read_up_to_this_point,
2998                                                        conversation.getName())));
2999                                return;
3000                            }
3001                        }
3002                    }
3003                }
3004            }
3005        } else {
3006            final MucOptions mucOptions = conversation.getMucOptions();
3007            final List<MucOptions.User> allUsers = mucOptions.getUsers();
3008            final Set<ReadByMarker> addedMarkers = new HashSet<>();
3009            ChatState state = ChatState.COMPOSING;
3010            List<MucOptions.User> users =
3011                    conversation.getMucOptions().getUsersWithChatState(state, 5);
3012            if (users.size() == 0) {
3013                state = ChatState.PAUSED;
3014                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3015            }
3016            if (mucOptions.isPrivateAndNonAnonymous()) {
3017                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3018                    final Set<ReadByMarker> markersForMessage =
3019                            messageList.get(i).getReadByMarkers();
3020                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3021                    for (ReadByMarker marker : markersForMessage) {
3022                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3023                            addedMarkers.add(
3024                                    marker); // may be put outside this condition. set should do
3025                            // dedup anyway
3026                            MucOptions.User user = mucOptions.findUser(marker);
3027                            if (user != null && !users.contains(user)) {
3028                                shownMarkers.add(user);
3029                            }
3030                        }
3031                    }
3032                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3033                    final Message statusMessage;
3034                    final int size = shownMarkers.size();
3035                    if (size > 1) {
3036                        final String body;
3037                        if (size <= 4) {
3038                            body =
3039                                    getString(
3040                                            R.string.contacts_have_read_up_to_this_point,
3041                                            UIHelper.concatNames(shownMarkers));
3042                        } else if (ReadByMarker.allUsersRepresented(
3043                                allUsers, markersForMessage, markerForSender)) {
3044                            body = getString(R.string.everyone_has_read_up_to_this_point);
3045                        } else {
3046                            body =
3047                                    getString(
3048                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3049                                            UIHelper.concatNames(shownMarkers, 3),
3050                                            size - 3);
3051                        }
3052                        statusMessage = Message.createStatusMessage(conversation, body);
3053                        statusMessage.setCounterparts(shownMarkers);
3054                    } else if (size == 1) {
3055                        statusMessage =
3056                                Message.createStatusMessage(
3057                                        conversation,
3058                                        getString(
3059                                                R.string.contact_has_read_up_to_this_point,
3060                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3061                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3062                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3063                    } else {
3064                        statusMessage = null;
3065                    }
3066                    if (statusMessage != null) {
3067                        this.messageList.add(i + 1, statusMessage);
3068                    }
3069                    addedMarkers.add(markerForSender);
3070                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3071                        break;
3072                    }
3073                }
3074            }
3075            if (users.size() > 0) {
3076                Message statusMessage;
3077                if (users.size() == 1) {
3078                    MucOptions.User user = users.get(0);
3079                    int id =
3080                            state == ChatState.COMPOSING
3081                                    ? R.string.contact_is_typing
3082                                    : R.string.contact_has_stopped_typing;
3083                    statusMessage =
3084                            Message.createStatusMessage(
3085                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3086                    statusMessage.setTrueCounterpart(user.getRealJid());
3087                    statusMessage.setCounterpart(user.getFullJid());
3088                } else {
3089                    int id =
3090                            state == ChatState.COMPOSING
3091                                    ? R.string.contacts_are_typing
3092                                    : R.string.contacts_have_stopped_typing;
3093                    statusMessage =
3094                            Message.createStatusMessage(
3095                                    conversation, getString(id, UIHelper.concatNames(users)));
3096                    statusMessage.setCounterparts(users);
3097                }
3098                this.messageList.add(statusMessage);
3099            }
3100        }
3101    }
3102
3103    private void stopScrolling() {
3104        long now = SystemClock.uptimeMillis();
3105        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3106        binding.messagesView.dispatchTouchEvent(cancel);
3107    }
3108
3109    private boolean showLoadMoreMessages(final Conversation c) {
3110        if (activity == null || activity.xmppConnectionService == null) {
3111            return false;
3112        }
3113        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3114        final MessageArchiveService service =
3115                activity.xmppConnectionService.getMessageArchiveService();
3116        return mam
3117                && (c.getLastClearHistory().getTimestamp() != 0
3118                        || (c.countMessages() == 0
3119                                && c.messagesLoaded.get()
3120                                && c.hasMessagesLeftOnServer()
3121                                && !service.queryInProgress(c)));
3122    }
3123
3124    private boolean hasMamSupport(final Conversation c) {
3125        if (c.getMode() == Conversation.MODE_SINGLE) {
3126            final XmppConnection connection = c.getAccount().getXmppConnection();
3127            return connection != null && connection.getFeatures().mam();
3128        } else {
3129            return c.getMucOptions().mamSupport();
3130        }
3131    }
3132
3133    protected void showSnackbar(
3134            final int message, final int action, final OnClickListener clickListener) {
3135        showSnackbar(message, action, clickListener, null);
3136    }
3137
3138    protected void showSnackbar(
3139            final int message,
3140            final int action,
3141            final OnClickListener clickListener,
3142            final View.OnLongClickListener longClickListener) {
3143        this.binding.snackbar.setVisibility(View.VISIBLE);
3144        this.binding.snackbar.setOnClickListener(null);
3145        this.binding.snackbarMessage.setText(message);
3146        this.binding.snackbarMessage.setOnClickListener(null);
3147        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3148        if (action != 0) {
3149            this.binding.snackbarAction.setText(action);
3150        }
3151        this.binding.snackbarAction.setOnClickListener(clickListener);
3152        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3153    }
3154
3155    protected void hideSnackbar() {
3156        this.binding.snackbar.setVisibility(View.GONE);
3157    }
3158
3159    protected void sendMessage(Message message) {
3160        activity.xmppConnectionService.sendMessage(message);
3161        messageSent();
3162    }
3163
3164    protected void sendPgpMessage(final Message message) {
3165        final XmppConnectionService xmppService = activity.xmppConnectionService;
3166        final Contact contact = message.getConversation().getContact();
3167        if (!activity.hasPgp()) {
3168            activity.showInstallPgpDialog();
3169            return;
3170        }
3171        if (conversation.getAccount().getPgpSignature() == null) {
3172            activity.announcePgp(
3173                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3174            return;
3175        }
3176        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3177            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3178        }
3179        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3180            if (contact.getPgpKeyId() != 0) {
3181                xmppService
3182                        .getPgpEngine()
3183                        .hasKey(
3184                                contact,
3185                                new UiCallback<Contact>() {
3186
3187                                    @Override
3188                                    public void userInputRequired(
3189                                            PendingIntent pi, Contact contact) {
3190                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3191                                    }
3192
3193                                    @Override
3194                                    public void success(Contact contact) {
3195                                        encryptTextMessage(message);
3196                                    }
3197
3198                                    @Override
3199                                    public void error(int error, Contact contact) {
3200                                        activity.runOnUiThread(
3201                                                () ->
3202                                                        Toast.makeText(
3203                                                                        activity,
3204                                                                        R.string
3205                                                                                .unable_to_connect_to_keychain,
3206                                                                        Toast.LENGTH_SHORT)
3207                                                                .show());
3208                                        mSendingPgpMessage.set(false);
3209                                    }
3210                                });
3211
3212            } else {
3213                showNoPGPKeyDialog(
3214                        false,
3215                        (dialog, which) -> {
3216                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3217                            xmppService.updateConversation(conversation);
3218                            message.setEncryption(Message.ENCRYPTION_NONE);
3219                            xmppService.sendMessage(message);
3220                            messageSent();
3221                        });
3222            }
3223        } else {
3224            if (conversation.getMucOptions().pgpKeysInUse()) {
3225                if (!conversation.getMucOptions().everybodyHasKeys()) {
3226                    Toast warning =
3227                            Toast.makeText(
3228                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3229                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3230                    warning.show();
3231                }
3232                encryptTextMessage(message);
3233            } else {
3234                showNoPGPKeyDialog(
3235                        true,
3236                        (dialog, which) -> {
3237                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3238                            message.setEncryption(Message.ENCRYPTION_NONE);
3239                            xmppService.updateConversation(conversation);
3240                            xmppService.sendMessage(message);
3241                            messageSent();
3242                        });
3243            }
3244        }
3245    }
3246
3247    public void encryptTextMessage(Message message) {
3248        activity.xmppConnectionService
3249                .getPgpEngine()
3250                .encrypt(
3251                        message,
3252                        new UiCallback<Message>() {
3253
3254                            @Override
3255                            public void userInputRequired(PendingIntent pi, Message message) {
3256                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3257                            }
3258
3259                            @Override
3260                            public void success(Message message) {
3261                                // TODO the following two call can be made before the callback
3262                                getActivity().runOnUiThread(() -> messageSent());
3263                            }
3264
3265                            @Override
3266                            public void error(final int error, Message message) {
3267                                getActivity()
3268                                        .runOnUiThread(
3269                                                () -> {
3270                                                    doneSendingPgpMessage();
3271                                                    Toast.makeText(
3272                                                                    getActivity(),
3273                                                                    error == 0
3274                                                                            ? R.string
3275                                                                                    .unable_to_connect_to_keychain
3276                                                                            : error,
3277                                                                    Toast.LENGTH_SHORT)
3278                                                            .show();
3279                                                });
3280                            }
3281                        });
3282    }
3283
3284    public void showNoPGPKeyDialog(
3285            final boolean plural, final DialogInterface.OnClickListener listener) {
3286        final MaterialAlertDialogBuilder builder =
3287                new MaterialAlertDialogBuilder(requireActivity());
3288        if (plural) {
3289            builder.setTitle(getString(R.string.no_pgp_keys));
3290            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3291        } else {
3292            builder.setTitle(getString(R.string.no_pgp_key));
3293            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3294        }
3295        builder.setNegativeButton(getString(R.string.cancel), null);
3296        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3297        builder.create().show();
3298    }
3299
3300    public void appendText(String text, final boolean doNotAppend) {
3301        if (text == null) {
3302            return;
3303        }
3304        final Editable editable = this.binding.textinput.getText();
3305        String previous = editable == null ? "" : editable.toString();
3306        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3307            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3308                    .show();
3309            return;
3310        }
3311        if (UIHelper.isLastLineQuote(previous)) {
3312            text = '\n' + text;
3313        } else if (previous.length() != 0
3314                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3315            text = " " + text;
3316        }
3317        this.binding.textinput.append(text);
3318    }
3319
3320    @Override
3321    public boolean onEnterPressed(final boolean isCtrlPressed) {
3322        if (isCtrlPressed || enterIsSend()) {
3323            sendMessage();
3324            return true;
3325        }
3326        return false;
3327    }
3328
3329    private boolean enterIsSend() {
3330        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3331        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3332    }
3333
3334    public boolean onArrowUpCtrlPressed() {
3335        final Message lastEditableMessage =
3336                conversation == null ? null : conversation.getLastEditableMessage();
3337        if (lastEditableMessage != null) {
3338            correctMessage(lastEditableMessage);
3339            return true;
3340        } else {
3341            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3342                    .show();
3343            return false;
3344        }
3345    }
3346
3347    @Override
3348    public void onTypingStarted() {
3349        final XmppConnectionService service =
3350                activity == null ? null : activity.xmppConnectionService;
3351        if (service == null) {
3352            return;
3353        }
3354        final Account.State status = conversation.getAccount().getStatus();
3355        if (status == Account.State.ONLINE
3356                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3357            service.sendChatState(conversation);
3358        }
3359        runOnUiThread(this::updateSendButton);
3360    }
3361
3362    @Override
3363    public void onTypingStopped() {
3364        final XmppConnectionService service =
3365                activity == null ? null : activity.xmppConnectionService;
3366        if (service == null) {
3367            return;
3368        }
3369        final Account.State status = conversation.getAccount().getStatus();
3370        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3371            service.sendChatState(conversation);
3372        }
3373    }
3374
3375    @Override
3376    public void onTextDeleted() {
3377        final XmppConnectionService service =
3378                activity == null ? null : activity.xmppConnectionService;
3379        if (service == null) {
3380            return;
3381        }
3382        final Account.State status = conversation.getAccount().getStatus();
3383        if (status == Account.State.ONLINE
3384                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3385            service.sendChatState(conversation);
3386        }
3387        if (storeNextMessage()) {
3388            runOnUiThread(
3389                    () -> {
3390                        if (activity == null) {
3391                            return;
3392                        }
3393                        activity.onConversationsListItemUpdated();
3394                    });
3395        }
3396        runOnUiThread(this::updateSendButton);
3397    }
3398
3399    @Override
3400    public void onTextChanged() {
3401        if (conversation != null && conversation.getCorrectingMessage() != null) {
3402            runOnUiThread(this::updateSendButton);
3403        }
3404    }
3405
3406    @Override
3407    public boolean onTabPressed(boolean repeated) {
3408        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3409            return false;
3410        }
3411        if (repeated) {
3412            completionIndex++;
3413        } else {
3414            lastCompletionLength = 0;
3415            completionIndex = 0;
3416            final String content = this.binding.textinput.getText().toString();
3417            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3418            int start =
3419                    lastCompletionCursor > 0
3420                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3421                            : 0;
3422            firstWord = start == 0;
3423            incomplete = content.substring(start, lastCompletionCursor);
3424        }
3425        List<String> completions = new ArrayList<>();
3426        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3427            String name = user.getName();
3428            if (name != null && name.startsWith(incomplete)) {
3429                completions.add(name + (firstWord ? ": " : " "));
3430            }
3431        }
3432        Collections.sort(completions);
3433        if (completions.size() > completionIndex) {
3434            String completion = completions.get(completionIndex).substring(incomplete.length());
3435            this.binding
3436                    .textinput
3437                    .getEditableText()
3438                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3439            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3440            lastCompletionLength = completion.length();
3441        } else {
3442            completionIndex = -1;
3443            this.binding
3444                    .textinput
3445                    .getEditableText()
3446                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3447            lastCompletionLength = 0;
3448        }
3449        return true;
3450    }
3451
3452    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3453        try {
3454            getActivity()
3455                    .startIntentSenderForResult(
3456                            pendingIntent.getIntentSender(),
3457                            requestCode,
3458                            null,
3459                            0,
3460                            0,
3461                            0,
3462                            Compatibility.pgpStartIntentSenderOptions());
3463        } catch (final SendIntentException ignored) {
3464        }
3465    }
3466
3467    @Override
3468    public void onBackendConnected() {
3469        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3470        String uuid = pendingConversationsUuid.pop();
3471        if (uuid != null) {
3472            if (!findAndReInitByUuidOrArchive(uuid)) {
3473                return;
3474            }
3475        } else {
3476            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3477                clearPending();
3478                activity.onConversationArchived(conversation);
3479                return;
3480            }
3481        }
3482        ActivityResult activityResult = postponedActivityResult.pop();
3483        if (activityResult != null) {
3484            handleActivityResult(activityResult);
3485        }
3486        clearPending();
3487    }
3488
3489    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3490        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3491        if (conversation == null) {
3492            clearPending();
3493            activity.onConversationArchived(null);
3494            return false;
3495        }
3496        reInit(conversation);
3497        ScrollState scrollState = pendingScrollState.pop();
3498        String lastMessageUuid = pendingLastMessageUuid.pop();
3499        List<Attachment> attachments = pendingMediaPreviews.pop();
3500        if (scrollState != null) {
3501            setScrollPosition(scrollState, lastMessageUuid);
3502        }
3503        if (attachments != null && attachments.size() > 0) {
3504            Log.d(Config.LOGTAG, "had attachments on restore");
3505            mediaPreviewAdapter.addMediaPreviews(attachments);
3506            toggleInputMethod();
3507        }
3508        return true;
3509    }
3510
3511    private void clearPending() {
3512        if (postponedActivityResult.clear()) {
3513            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3514            if (pendingTakePhotoUri.clear()) {
3515                Log.e(Config.LOGTAG, "cleared pending photo uri");
3516            }
3517        }
3518        if (pendingScrollState.clear()) {
3519            Log.e(Config.LOGTAG, "cleared scroll state");
3520        }
3521        if (pendingConversationsUuid.clear()) {
3522            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3523        }
3524        if (pendingMediaPreviews.clear()) {
3525            Log.e(Config.LOGTAG, "cleared pending media previews");
3526        }
3527    }
3528
3529    public Conversation getConversation() {
3530        return conversation;
3531    }
3532
3533    @Override
3534    public void onContactPictureLongClicked(View v, final Message message) {
3535        final String fingerprint;
3536        if (message.getEncryption() == Message.ENCRYPTION_PGP
3537                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3538            fingerprint = "pgp";
3539        } else {
3540            fingerprint = message.getFingerprint();
3541        }
3542        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3543        final Contact contact = message.getContact();
3544        if (message.getStatus() <= Message.STATUS_RECEIVED
3545                && (contact == null || !contact.isSelf())) {
3546            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3547                final Jid cp = message.getCounterpart();
3548                if (cp == null || cp.isBareJid()) {
3549                    return;
3550                }
3551                final Jid tcp = message.getTrueCounterpart();
3552                final User userByRealJid =
3553                        tcp != null
3554                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3555                                : null;
3556                final User user =
3557                        userByRealJid != null
3558                                ? userByRealJid
3559                                : conversation.getMucOptions().findUserByFullJid(cp);
3560                popupMenu.inflate(R.menu.muc_details_context);
3561                final Menu menu = popupMenu.getMenu();
3562                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3563                        activity, menu, conversation, user);
3564                popupMenu.setOnMenuItemClickListener(
3565                        menuItem ->
3566                                MucDetailsContextMenuHelper.onContextItemSelected(
3567                                        menuItem, user, activity, fingerprint));
3568            } else {
3569                popupMenu.inflate(R.menu.one_on_one_context);
3570                popupMenu.setOnMenuItemClickListener(
3571                        item -> {
3572                            switch (item.getItemId()) {
3573                                case R.id.action_contact_details:
3574                                    activity.switchToContactDetails(
3575                                            message.getContact(), fingerprint);
3576                                    break;
3577                                case R.id.action_show_qr_code:
3578                                    activity.showQrCode(
3579                                            "xmpp:"
3580                                                    + message.getContact()
3581                                                            .getJid()
3582                                                            .asBareJid()
3583                                                            .toString());
3584                                    break;
3585                            }
3586                            return true;
3587                        });
3588            }
3589        } else {
3590            popupMenu.inflate(R.menu.account_context);
3591            final Menu menu = popupMenu.getMenu();
3592            menu.findItem(R.id.action_manage_accounts)
3593                    .setVisible(QuickConversationsService.isConversations());
3594            popupMenu.setOnMenuItemClickListener(
3595                    item -> {
3596                        final XmppActivity activity = this.activity;
3597                        if (activity == null) {
3598                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3599                            return true;
3600                        }
3601                        switch (item.getItemId()) {
3602                            case R.id.action_show_qr_code:
3603                                activity.showQrCode(conversation.getAccount().getShareableUri());
3604                                break;
3605                            case R.id.action_account_details:
3606                                activity.switchToAccount(
3607                                        message.getConversation().getAccount(), fingerprint);
3608                                break;
3609                            case R.id.action_manage_accounts:
3610                                AccountUtils.launchManageAccounts(activity);
3611                                break;
3612                        }
3613                        return true;
3614                    });
3615        }
3616        popupMenu.show();
3617    }
3618
3619    @Override
3620    public void onContactPictureClicked(Message message) {
3621        String fingerprint;
3622        if (message.getEncryption() == Message.ENCRYPTION_PGP
3623                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3624            fingerprint = "pgp";
3625        } else {
3626            fingerprint = message.getFingerprint();
3627        }
3628        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3629        if (received) {
3630            if (message.getConversation() instanceof Conversation
3631                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3632                Jid tcp = message.getTrueCounterpart();
3633                Jid user = message.getCounterpart();
3634                if (user != null && !user.isBareJid()) {
3635                    final MucOptions mucOptions =
3636                            ((Conversation) message.getConversation()).getMucOptions();
3637                    if (mucOptions.participating()
3638                            || ((Conversation) message.getConversation()).getNextCounterpart()
3639                                    != null) {
3640                        if (!mucOptions.isUserInRoom(user)
3641                                && mucOptions.findUserByRealJid(
3642                                                tcp == null ? null : tcp.asBareJid())
3643                                        == null) {
3644                            Toast.makeText(
3645                                            getActivity(),
3646                                            activity.getString(
3647                                                    R.string.user_has_left_conference,
3648                                                    user.getResource()),
3649                                            Toast.LENGTH_SHORT)
3650                                    .show();
3651                        }
3652                        highlightInConference(user.getResource());
3653                    } else {
3654                        Toast.makeText(
3655                                        getActivity(),
3656                                        R.string.you_are_not_participating,
3657                                        Toast.LENGTH_SHORT)
3658                                .show();
3659                    }
3660                }
3661                return;
3662            } else {
3663                if (!message.getContact().isSelf()) {
3664                    activity.switchToContactDetails(message.getContact(), fingerprint);
3665                    return;
3666                }
3667            }
3668        }
3669        activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
3670    }
3671
3672    private Activity requireActivity() {
3673        final Activity activity = getActivity();
3674        if (activity == null) {
3675            throw new IllegalStateException("Activity not attached");
3676        }
3677        return activity;
3678    }
3679}