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.getFirstDenied;
   8import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
   9
  10import android.Manifest;
  11import android.annotation.SuppressLint;
  12import android.app.Activity;
  13import android.app.Fragment;
  14import android.app.FragmentManager;
  15import android.app.PendingIntent;
  16import android.content.ActivityNotFoundException;
  17import android.content.Context;
  18import android.content.DialogInterface;
  19import android.content.Intent;
  20import android.content.IntentSender.SendIntentException;
  21import android.content.SharedPreferences;
  22import android.content.pm.PackageManager;
  23import android.net.Uri;
  24import android.os.Build;
  25import android.os.Bundle;
  26import android.os.Environment;
  27import android.os.Handler;
  28import android.os.storage.StorageManager;
  29import android.os.SystemClock;
  30import android.preference.PreferenceManager;
  31import android.provider.MediaStore;
  32import android.text.Editable;
  33import android.text.SpannableStringBuilder;
  34import android.text.TextUtils;
  35import android.util.Log;
  36import android.view.ContextMenu;
  37import android.view.ContextMenu.ContextMenuInfo;
  38import android.view.Gravity;
  39import android.view.LayoutInflater;
  40import android.view.Menu;
  41import android.view.MenuInflater;
  42import android.view.MenuItem;
  43import android.view.MotionEvent;
  44import android.view.View;
  45import android.view.View.OnClickListener;
  46import android.view.ViewGroup;
  47import android.view.inputmethod.EditorInfo;
  48import android.view.inputmethod.InputMethodManager;
  49import android.widget.AbsListView;
  50import android.widget.AbsListView.OnScrollListener;
  51import android.widget.AdapterView;
  52import android.widget.AdapterView.AdapterContextMenuInfo;
  53import android.widget.CheckBox;
  54import android.widget.ListView;
  55import android.widget.PopupMenu;
  56import android.widget.TextView.OnEditorActionListener;
  57import android.widget.Toast;
  58
  59import androidx.activity.OnBackPressedCallback;
  60import androidx.annotation.IdRes;
  61import androidx.annotation.NonNull;
  62import androidx.annotation.Nullable;
  63import androidx.annotation.StringRes;
  64import androidx.appcompat.app.AlertDialog;
  65import androidx.core.view.inputmethod.InputConnectionCompat;
  66import androidx.core.view.inputmethod.InputContentInfoCompat;
  67import androidx.databinding.DataBindingUtil;
  68import androidx.documentfile.provider.DocumentFile;
  69import androidx.viewpager.widget.PagerAdapter;
  70import androidx.viewpager.widget.ViewPager;
  71
  72import com.cheogram.android.BobTransfer;
  73
  74import com.google.common.base.Optional;
  75import com.google.common.collect.ImmutableList;
  76
  77import org.jetbrains.annotations.NotNull;
  78
  79import io.ipfs.cid.Cid;
  80
  81import java.io.File;
  82import java.net.URISyntaxException;
  83import java.util.ArrayList;
  84import java.util.Arrays;
  85import java.util.Collection;
  86import java.util.Collections;
  87import java.util.HashSet;
  88import java.util.Iterator;
  89import java.util.List;
  90import java.util.Map;
  91import java.util.Set;
  92import java.util.UUID;
  93import java.util.concurrent.atomic.AtomicBoolean;
  94
  95import eu.siacs.conversations.Config;
  96import eu.siacs.conversations.R;
  97import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  98import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  99import eu.siacs.conversations.databinding.FragmentConversationBinding;
 100import eu.siacs.conversations.entities.Account;
 101import eu.siacs.conversations.entities.Blockable;
 102import eu.siacs.conversations.entities.Contact;
 103import eu.siacs.conversations.entities.Conversation;
 104import eu.siacs.conversations.entities.Conversational;
 105import eu.siacs.conversations.entities.DownloadableFile;
 106import eu.siacs.conversations.entities.Message;
 107import eu.siacs.conversations.entities.MucOptions;
 108import eu.siacs.conversations.entities.MucOptions.User;
 109import eu.siacs.conversations.entities.Presence;
 110import eu.siacs.conversations.entities.Presences;
 111import eu.siacs.conversations.entities.ReadByMarker;
 112import eu.siacs.conversations.entities.Transferable;
 113import eu.siacs.conversations.entities.TransferablePlaceholder;
 114import eu.siacs.conversations.http.HttpDownloadConnection;
 115import eu.siacs.conversations.persistance.FileBackend;
 116import eu.siacs.conversations.services.MessageArchiveService;
 117import eu.siacs.conversations.services.QuickConversationsService;
 118import eu.siacs.conversations.services.XmppConnectionService;
 119import eu.siacs.conversations.ui.adapter.CommandAdapter;
 120import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
 121import eu.siacs.conversations.ui.adapter.MessageAdapter;
 122import eu.siacs.conversations.ui.util.ActivityResult;
 123import eu.siacs.conversations.ui.util.Attachment;
 124import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
 125import eu.siacs.conversations.ui.util.DateSeparator;
 126import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 127import eu.siacs.conversations.ui.util.ListViewUtils;
 128import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 129import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 130import eu.siacs.conversations.ui.util.PendingItem;
 131import eu.siacs.conversations.ui.util.PresenceSelector;
 132import eu.siacs.conversations.ui.util.ScrollState;
 133import eu.siacs.conversations.ui.util.SendButtonAction;
 134import eu.siacs.conversations.ui.util.SendButtonTool;
 135import eu.siacs.conversations.ui.util.ShareUtil;
 136import eu.siacs.conversations.ui.util.ViewUtil;
 137import eu.siacs.conversations.ui.widget.EditMessage;
 138import eu.siacs.conversations.utils.AccountUtils;
 139import eu.siacs.conversations.utils.Compatibility;
 140import eu.siacs.conversations.utils.Emoticons;
 141import eu.siacs.conversations.utils.GeoHelper;
 142import eu.siacs.conversations.utils.MessageUtils;
 143import eu.siacs.conversations.utils.MimeUtils;
 144import eu.siacs.conversations.utils.NickValidityChecker;
 145import eu.siacs.conversations.utils.Patterns;
 146import eu.siacs.conversations.utils.PermissionUtils;
 147import eu.siacs.conversations.utils.QuickLoader;
 148import eu.siacs.conversations.utils.StylingHelper;
 149import eu.siacs.conversations.utils.TimeFrameUtils;
 150import eu.siacs.conversations.utils.UIHelper;
 151import eu.siacs.conversations.xml.Element;
 152import eu.siacs.conversations.xml.Namespace;
 153import eu.siacs.conversations.xmpp.Jid;
 154import eu.siacs.conversations.xmpp.XmppConnection;
 155import eu.siacs.conversations.xmpp.chatstate.ChatState;
 156import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 157import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 158import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 159import eu.siacs.conversations.xmpp.jingle.Media;
 160import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 161import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 162import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 163
 164public class ConversationFragment extends XmppFragment
 165        implements EditMessage.KeyboardListener,
 166                MessageAdapter.OnContactPictureLongClicked,
 167                MessageAdapter.OnContactPictureClicked,
 168                MessageAdapter.OnInlineImageLongClicked {
 169
 170    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 171    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 172    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 173    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 174    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 175    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 176    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 177    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 178    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 179    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 180    public static final int REQUEST_SAVE_STICKER = 0x215;
 181    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 182    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 183    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 184    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 185    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 186    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 187    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 188
 189    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 190    public static final String STATE_CONVERSATION_UUID =
 191            ConversationFragment.class.getName() + ".uuid";
 192    public static final String STATE_SCROLL_POSITION =
 193            ConversationFragment.class.getName() + ".scroll_position";
 194    public static final String STATE_PHOTO_URI =
 195            ConversationFragment.class.getName() + ".media_previews";
 196    public static final String STATE_MEDIA_PREVIEWS =
 197            ConversationFragment.class.getName() + ".take_photo_uri";
 198    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 199
 200    private final List<Message> messageList = new ArrayList<>();
 201    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 202    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 203    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 204    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 205    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 206    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 207    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 208    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 209    public Uri mPendingEditorContent = null;
 210    protected MessageAdapter messageListAdapter;
 211    protected CommandAdapter commandAdapter;
 212    private MediaPreviewAdapter mediaPreviewAdapter;
 213    private String lastMessageUuid = null;
 214    private Conversation conversation;
 215    private FragmentConversationBinding binding;
 216    private Toast messageLoaderToast;
 217    private ConversationsActivity activity;
 218    private boolean reInitRequiredOnStart = true;
 219    private int identiconWidth = -1;
 220    private File savingAsSticker = null;
 221    private final OnClickListener clickToMuc =
 222            new OnClickListener() {
 223
 224                @Override
 225                public void onClick(View v) {
 226                    ConferenceDetailsActivity.open(getActivity(), conversation);
 227                }
 228            };
 229    private final OnClickListener leaveMuc =
 230            new OnClickListener() {
 231
 232                @Override
 233                public void onClick(View v) {
 234                    activity.xmppConnectionService.archiveConversation(conversation);
 235                }
 236            };
 237    private final OnClickListener joinMuc =
 238            new OnClickListener() {
 239
 240                @Override
 241                public void onClick(View v) {
 242                    activity.xmppConnectionService.joinMuc(conversation);
 243                }
 244            };
 245
 246    private final OnClickListener acceptJoin =
 247            new OnClickListener() {
 248                @Override
 249                public void onClick(View v) {
 250                    conversation.setAttribute("accept_non_anonymous", true);
 251                    activity.xmppConnectionService.updateConversation(conversation);
 252                    activity.xmppConnectionService.joinMuc(conversation);
 253                }
 254            };
 255
 256    private final OnClickListener enterPassword =
 257            new OnClickListener() {
 258
 259                @Override
 260                public void onClick(View v) {
 261                    MucOptions muc = conversation.getMucOptions();
 262                    String password = muc.getPassword();
 263                    if (password == null) {
 264                        password = "";
 265                    }
 266                    activity.quickPasswordEdit(
 267                            password,
 268                            value -> {
 269                                activity.xmppConnectionService.providePasswordForMuc(
 270                                        conversation, value);
 271                                return null;
 272                            });
 273                }
 274            };
 275    private final OnScrollListener mOnScrollListener =
 276            new OnScrollListener() {
 277
 278                @Override
 279                public void onScrollStateChanged(AbsListView view, int scrollState) {
 280                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 281                        updateThreadFromLastMessage();
 282                        fireReadEvent();
 283                    }
 284                }
 285
 286                @Override
 287                public void onScroll(
 288                        final AbsListView view,
 289                        int firstVisibleItem,
 290                        int visibleItemCount,
 291                        int totalItemCount) {
 292                    toggleScrollDownButton(view);
 293                    synchronized (ConversationFragment.this.messageList) {
 294                        if (firstVisibleItem < 5
 295                                && conversation != null
 296                                && conversation.messagesLoaded.compareAndSet(true, false)
 297                                && messageList.size() > 0) {
 298                            long timestamp;
 299                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 300                                    && messageList.size() >= 2) {
 301                                timestamp = messageList.get(1).getTimeSent();
 302                            } else {
 303                                timestamp = messageList.get(0).getTimeSent();
 304                            }
 305                            activity.xmppConnectionService.loadMoreMessages(
 306                                    conversation,
 307                                    timestamp,
 308                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 309                                        @Override
 310                                        public void onMoreMessagesLoaded(
 311                                                final int c, final Conversation conversation) {
 312                                            if (ConversationFragment.this.conversation
 313                                                    != conversation) {
 314                                                conversation.messagesLoaded.set(true);
 315                                                return;
 316                                            }
 317                                            runOnUiThread(
 318                                                    () -> {
 319                                                        synchronized (messageList) {
 320                                                            final int oldPosition =
 321                                                                    binding.messagesView
 322                                                                            .getFirstVisiblePosition();
 323                                                            Message message = null;
 324                                                            int childPos;
 325                                                            for (childPos = 0;
 326                                                                    childPos + oldPosition
 327                                                                            < messageList.size();
 328                                                                    ++childPos) {
 329                                                                message =
 330                                                                        messageList.get(
 331                                                                                oldPosition
 332                                                                                        + childPos);
 333                                                                if (message.getType()
 334                                                                        != Message.TYPE_STATUS) {
 335                                                                    break;
 336                                                                }
 337                                                            }
 338                                                            final String uuid =
 339                                                                    message != null
 340                                                                            ? message.getUuid()
 341                                                                            : null;
 342                                                            View v =
 343                                                                    binding.messagesView.getChildAt(
 344                                                                            childPos);
 345                                                            final int pxOffset =
 346                                                                    (v == null) ? 0 : v.getTop();
 347                                                            ConversationFragment.this.conversation
 348                                                                    .populateWithMessages(
 349                                                                            ConversationFragment
 350                                                                                    .this
 351                                                                                    .messageList);
 352                                                            try {
 353                                                                updateStatusMessages();
 354                                                            } catch (IllegalStateException e) {
 355                                                                Log.d(
 356                                                                        Config.LOGTAG,
 357                                                                        "caught illegal state exception while updating status messages");
 358                                                            }
 359                                                            messageListAdapter
 360                                                                    .notifyDataSetChanged();
 361                                                            int pos =
 362                                                                    Math.max(
 363                                                                            getIndexOf(
 364                                                                                    uuid,
 365                                                                                    messageList),
 366                                                                            0);
 367                                                            binding.messagesView
 368                                                                    .setSelectionFromTop(
 369                                                                            pos, pxOffset);
 370                                                            if (messageLoaderToast != null) {
 371                                                                messageLoaderToast.cancel();
 372                                                            }
 373                                                            conversation.messagesLoaded.set(true);
 374                                                        }
 375                                                    });
 376                                        }
 377
 378                                        @Override
 379                                        public void informUser(final int resId) {
 380
 381                                            runOnUiThread(
 382                                                    () -> {
 383                                                        if (messageLoaderToast != null) {
 384                                                            messageLoaderToast.cancel();
 385                                                        }
 386                                                        if (ConversationFragment.this.conversation
 387                                                                != conversation) {
 388                                                            return;
 389                                                        }
 390                                                        messageLoaderToast =
 391                                                                Toast.makeText(
 392                                                                        view.getContext(),
 393                                                                        resId,
 394                                                                        Toast.LENGTH_LONG);
 395                                                        messageLoaderToast.show();
 396                                                    });
 397                                        }
 398                                    });
 399                        }
 400                    }
 401                }
 402            };
 403    private final EditMessage.OnCommitContentListener mEditorContentListener =
 404            new EditMessage.OnCommitContentListener() {
 405                @Override
 406                public boolean onCommitContent(
 407                        InputContentInfoCompat inputContentInfo,
 408                        int flags,
 409                        Bundle opts,
 410                        String[] contentMimeTypes) {
 411                    // try to get permission to read the image, if applicable
 412                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 413                            != 0) {
 414                        try {
 415                            inputContentInfo.requestPermission();
 416                        } catch (Exception e) {
 417                            Log.e(
 418                                    Config.LOGTAG,
 419                                    "InputContentInfoCompat#requestPermission() failed.",
 420                                    e);
 421                            Toast.makeText(
 422                                            getActivity(),
 423                                            activity.getString(
 424                                                    R.string.no_permission_to_access_x,
 425                                                    inputContentInfo.getDescription()),
 426                                            Toast.LENGTH_LONG)
 427                                    .show();
 428                            return false;
 429                        }
 430                    }
 431                    if (hasPermissions(
 432                            REQUEST_ADD_EDITOR_CONTENT,
 433                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 434                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 435                    } else {
 436                        mPendingEditorContent = inputContentInfo.getContentUri();
 437                    }
 438                    return true;
 439                }
 440            };
 441    private Message selectedMessage;
 442    private final OnClickListener mEnableAccountListener =
 443            new OnClickListener() {
 444                @Override
 445                public void onClick(View v) {
 446                    final Account account = conversation == null ? null : conversation.getAccount();
 447                    if (account != null) {
 448                        account.setOption(Account.OPTION_DISABLED, false);
 449                        activity.xmppConnectionService.updateAccount(account);
 450                    }
 451                }
 452            };
 453    private final OnClickListener mUnblockClickListener =
 454            new OnClickListener() {
 455                @Override
 456                public void onClick(final View v) {
 457                    v.post(() -> v.setVisibility(View.INVISIBLE));
 458                    if (conversation.isDomainBlocked()) {
 459                        BlockContactDialog.show(activity, conversation);
 460                    } else {
 461                        unblockConversation(conversation);
 462                    }
 463                }
 464            };
 465    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 466    private final OnClickListener mAddBackClickListener =
 467            new OnClickListener() {
 468
 469                @Override
 470                public void onClick(View v) {
 471                    final Contact contact = conversation == null ? null : conversation.getContact();
 472                    if (contact != null) {
 473                        activity.xmppConnectionService.createContact(contact, true);
 474                        activity.switchToContactDetails(contact);
 475                    }
 476                }
 477            };
 478    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 479    private final OnClickListener mAllowPresenceSubscription =
 480            new OnClickListener() {
 481                @Override
 482                public void onClick(View v) {
 483                    final Contact contact = conversation == null ? null : conversation.getContact();
 484                    if (contact != null) {
 485                        activity.xmppConnectionService.sendPresencePacket(
 486                                contact.getAccount(),
 487                                activity.xmppConnectionService
 488                                        .getPresenceGenerator()
 489                                        .sendPresenceUpdatesTo(contact));
 490                        hideSnackbar();
 491                    }
 492                }
 493            };
 494    protected OnClickListener clickToDecryptListener =
 495            new OnClickListener() {
 496
 497                @Override
 498                public void onClick(View v) {
 499                    PendingIntent pendingIntent =
 500                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 501                    if (pendingIntent != null) {
 502                        try {
 503                            getActivity()
 504                                    .startIntentSenderForResult(
 505                                            pendingIntent.getIntentSender(),
 506                                            REQUEST_DECRYPT_PGP,
 507                                            null,
 508                                            0,
 509                                            0,
 510                                            0);
 511                        } catch (SendIntentException e) {
 512                            Toast.makeText(
 513                                            getActivity(),
 514                                            R.string.unable_to_connect_to_keychain,
 515                                            Toast.LENGTH_SHORT)
 516                                    .show();
 517                            conversation
 518                                    .getAccount()
 519                                    .getPgpDecryptionService()
 520                                    .continueDecryption(true);
 521                        }
 522                    }
 523                    updateSnackBar(conversation);
 524                }
 525            };
 526    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 527    private final OnEditorActionListener mEditorActionListener =
 528            (v, actionId, event) -> {
 529                if (actionId == EditorInfo.IME_ACTION_SEND) {
 530                    InputMethodManager imm =
 531                            (InputMethodManager)
 532                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 533                    if (imm != null && imm.isFullscreenMode()) {
 534                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 535                    }
 536                    sendMessage();
 537                    return true;
 538                } else {
 539                    return false;
 540                }
 541            };
 542    private final OnClickListener mScrollButtonListener =
 543            new OnClickListener() {
 544
 545                @Override
 546                public void onClick(View v) {
 547                    stopScrolling();
 548                    setSelection(binding.messagesView.getCount() - 1, true);
 549                }
 550            };
 551    private final OnClickListener mSendButtonListener =
 552            new OnClickListener() {
 553
 554                @Override
 555                public void onClick(View v) {
 556                    Object tag = v.getTag();
 557                    if (tag instanceof SendButtonAction) {
 558                        SendButtonAction action = (SendButtonAction) tag;
 559                        switch (action) {
 560                            case TAKE_PHOTO:
 561                            case RECORD_VIDEO:
 562                            case SEND_LOCATION:
 563                            case RECORD_VOICE:
 564                            case CHOOSE_PICTURE:
 565                                attachFile(action.toChoice());
 566                                break;
 567                            case CANCEL:
 568                                if (conversation != null) {
 569                                    if (conversation.setCorrectingMessage(null)) {
 570                                        binding.textinput.setText("");
 571                                        binding.textinput.append(conversation.getDraftMessage());
 572                                        conversation.setDraftMessage(null);
 573                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 574                                        conversation.setNextCounterpart(null);
 575                                        binding.textinput.setText("");
 576                                    } else {
 577                                        binding.textinput.setText("");
 578                                    }
 579                                    updateChatMsgHint();
 580                                    updateSendButton();
 581                                    updateEditablity();
 582                                }
 583                                break;
 584                            default:
 585                                sendMessage();
 586                        }
 587                    } else {
 588                        sendMessage();
 589                    }
 590                }
 591            };
 592    private OnBackPressedCallback backPressedLeaveSingleThread = new OnBackPressedCallback(false) {
 593        @Override
 594        public void handleOnBackPressed() {
 595            conversation.setLockThread(false);
 596            this.setEnabled(false);
 597            conversation.setUserSelectedThread(false);
 598            refresh();
 599            updateThreadFromLastMessage();
 600        }
 601    };
 602    private int completionIndex = 0;
 603    private int lastCompletionLength = 0;
 604    private String incomplete;
 605    private int lastCompletionCursor;
 606    private boolean firstWord = false;
 607    private Message mPendingDownloadableMessage;
 608
 609    private static ConversationFragment findConversationFragment(Activity activity) {
 610        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 611        if (fragment instanceof ConversationFragment) {
 612            return (ConversationFragment) fragment;
 613        }
 614        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 615        if (fragment instanceof ConversationFragment) {
 616            return (ConversationFragment) fragment;
 617        }
 618        return null;
 619    }
 620
 621    public static void startStopPending(Activity activity) {
 622        ConversationFragment fragment = findConversationFragment(activity);
 623        if (fragment != null) {
 624            fragment.messageListAdapter.startStopPending();
 625        }
 626    }
 627
 628    public static void downloadFile(Activity activity, Message message) {
 629        ConversationFragment fragment = findConversationFragment(activity);
 630        if (fragment != null) {
 631            fragment.startDownloadable(message);
 632        }
 633    }
 634
 635    public static void registerPendingMessage(Activity activity, Message message) {
 636        ConversationFragment fragment = findConversationFragment(activity);
 637        if (fragment != null) {
 638            fragment.pendingMessage.push(message);
 639        }
 640    }
 641
 642    public static void openPendingMessage(Activity activity) {
 643        ConversationFragment fragment = findConversationFragment(activity);
 644        if (fragment != null) {
 645            Message message = fragment.pendingMessage.pop();
 646            if (message != null) {
 647                fragment.messageListAdapter.openDownloadable(message);
 648            }
 649        }
 650    }
 651
 652    public static Conversation getConversation(Activity activity) {
 653        return getConversation(activity, R.id.secondary_fragment);
 654    }
 655
 656    private static Conversation getConversation(Activity activity, @IdRes int res) {
 657        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 658        if (fragment instanceof ConversationFragment) {
 659            return ((ConversationFragment) fragment).getConversation();
 660        } else {
 661            return null;
 662        }
 663    }
 664
 665    public static ConversationFragment get(Activity activity) {
 666        FragmentManager fragmentManager = activity.getFragmentManager();
 667        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 668        if (fragment instanceof ConversationFragment) {
 669            return (ConversationFragment) fragment;
 670        } else {
 671            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 672            return fragment instanceof ConversationFragment
 673                    ? (ConversationFragment) fragment
 674                    : null;
 675        }
 676    }
 677
 678    public static Conversation getConversationReliable(Activity activity) {
 679        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 680        if (conversation != null) {
 681            return conversation;
 682        }
 683        return getConversation(activity, R.id.main_fragment);
 684    }
 685
 686    private static boolean scrolledToBottom(AbsListView listView) {
 687        final int count = listView.getCount();
 688        if (count == 0) {
 689            return true;
 690        } else if (listView.getLastVisiblePosition() == count - 1) {
 691            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 692            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 693        } else {
 694            return false;
 695        }
 696    }
 697
 698    private void toggleScrollDownButton() {
 699        toggleScrollDownButton(binding.messagesView);
 700    }
 701
 702    private void toggleScrollDownButton(AbsListView listView) {
 703        if (conversation == null) {
 704            return;
 705        }
 706        if (scrolledToBottom(listView)) {
 707            lastMessageUuid = null;
 708            hideUnreadMessagesCount();
 709        } else {
 710            binding.scrollToBottomButton.setEnabled(true);
 711            binding.scrollToBottomButton.show();
 712            if (lastMessageUuid == null) {
 713                lastMessageUuid = conversation.getLatestMessage().getUuid();
 714            }
 715            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 716                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 717            }
 718        }
 719    }
 720
 721    private int getIndexOf(String uuid, List<Message> messages) {
 722        if (uuid == null) {
 723            return messages.size() - 1;
 724        }
 725        for (int i = 0; i < messages.size(); ++i) {
 726            if (uuid.equals(messages.get(i).getUuid())) {
 727                return i;
 728            } else {
 729                Message next = messages.get(i);
 730                while (next != null && next.wasMergedIntoPrevious()) {
 731                    if (uuid.equals(next.getUuid())) {
 732                        return i;
 733                    }
 734                    next = next.next();
 735                }
 736            }
 737        }
 738        return -1;
 739    }
 740
 741    private ScrollState getScrollPosition() {
 742        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 743        if (listView == null
 744                || listView.getCount() == 0
 745                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 746            return null;
 747        } else {
 748            final int pos = listView.getFirstVisiblePosition();
 749            final View view = listView.getChildAt(0);
 750            if (view == null) {
 751                return null;
 752            } else {
 753                return new ScrollState(pos, view.getTop());
 754            }
 755        }
 756    }
 757
 758    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 759        if (scrollPosition != null) {
 760
 761            this.lastMessageUuid = lastMessageUuid;
 762            if (lastMessageUuid != null) {
 763                binding.unreadCountCustomView.setUnreadCount(
 764                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 765            }
 766            // TODO maybe this needs a 'post'
 767            this.binding.messagesView.setSelectionFromTop(
 768                    scrollPosition.position, scrollPosition.offset);
 769            toggleScrollDownButton();
 770        }
 771    }
 772
 773    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 774        if (conversation == null) {
 775            return;
 776        }
 777        activity.xmppConnectionService.attachLocationToConversation(
 778                conversation,
 779                uri,
 780                new UiCallback<Message>() {
 781
 782                    @Override
 783                    public void success(Message message) {}
 784
 785                    @Override
 786                    public void error(int errorCode, Message object) {
 787                        // TODO show possible pgp error
 788                    }
 789
 790                    @Override
 791                    public void userInputRequired(PendingIntent pi, Message object) {}
 792                });
 793    }
 794
 795    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 796        if (conversation == null) {
 797            return;
 798        }
 799        final Toast prepareFileToast =
 800                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 801        prepareFileToast.show();
 802        activity.delegateUriPermissionsToService(uri);
 803        activity.xmppConnectionService.attachFileToConversation(
 804                conversation,
 805                uri,
 806                type,
 807                new UiInformableCallback<Message>() {
 808                    @Override
 809                    public void inform(final String text) {
 810                        hidePrepareFileToast(prepareFileToast);
 811                        runOnUiThread(() -> activity.replaceToast(text));
 812                    }
 813
 814                    @Override
 815                    public void success(Message message) {
 816                        runOnUiThread(() -> activity.hideToast());
 817                        hidePrepareFileToast(prepareFileToast);
 818                    }
 819
 820                    @Override
 821                    public void error(final int errorCode, Message message) {
 822                        hidePrepareFileToast(prepareFileToast);
 823                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 824                    }
 825
 826                    @Override
 827                    public void userInputRequired(PendingIntent pi, Message message) {
 828                        hidePrepareFileToast(prepareFileToast);
 829                    }
 830                });
 831    }
 832
 833    public void attachEditorContentToConversation(Uri uri) {
 834        mediaPreviewAdapter.addMediaPreviews(
 835                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 836        toggleInputMethod();
 837    }
 838
 839    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 840        if (conversation == null) {
 841            return;
 842        }
 843        final Toast prepareFileToast =
 844                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 845        prepareFileToast.show();
 846        activity.delegateUriPermissionsToService(uri);
 847        activity.xmppConnectionService.attachImageToConversation(
 848                conversation,
 849                uri,
 850                type,
 851                new UiCallback<Message>() {
 852
 853                    @Override
 854                    public void userInputRequired(PendingIntent pi, Message object) {
 855                        hidePrepareFileToast(prepareFileToast);
 856                    }
 857
 858                    @Override
 859                    public void success(Message message) {
 860                        hidePrepareFileToast(prepareFileToast);
 861                    }
 862
 863                    @Override
 864                    public void error(final int error, final Message message) {
 865                        hidePrepareFileToast(prepareFileToast);
 866                        final ConversationsActivity activity = ConversationFragment.this.activity;
 867                        if (activity == null) {
 868                            return;
 869                        }
 870                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 871                    }
 872                });
 873    }
 874
 875    private void hidePrepareFileToast(final Toast prepareFileToast) {
 876        if (prepareFileToast != null && activity != null) {
 877            activity.runOnUiThread(prepareFileToast::cancel);
 878        }
 879    }
 880
 881    private void sendMessage() {
 882        conversation.setUserSelectedThread(false);
 883        if (mediaPreviewAdapter.hasAttachments()) {
 884            commitAttachments();
 885            return;
 886        }
 887        final Editable text = this.binding.textinput.getText();
 888        final String body = text == null ? "" : text.toString();
 889        final Conversation conversation = this.conversation;
 890        if (body.length() == 0 || conversation == null) {
 891            return;
 892        }
 893        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 894            return;
 895        }
 896        final Message message;
 897        if (conversation.getCorrectingMessage() == null) {
 898            if (conversation.getReplyTo() != null) {
 899                if (Emoticons.isEmoji(body)) {
 900                    message = conversation.getReplyTo().react(body);
 901                } else {
 902                    message = conversation.getReplyTo().reply();
 903                    message.appendBody(body);
 904                }
 905                message.setEncryption(conversation.getNextEncryption());
 906            } else {
 907                message = new Message(conversation, body, conversation.getNextEncryption());
 908            }
 909            message.setThread(conversation.getThread());
 910            Message.configurePrivateMessage(message);
 911        } else {
 912            message = conversation.getCorrectingMessage();
 913            message.setBody(body);
 914            message.putEdited(message.getUuid(), message.getServerMsgId());
 915            message.setServerMsgId(null);
 916            message.setUuid(UUID.randomUUID().toString());
 917        }
 918        switch (conversation.getNextEncryption()) {
 919            case Message.ENCRYPTION_PGP:
 920                sendPgpMessage(message);
 921                break;
 922            default:
 923                sendMessage(message);
 924        }
 925        setupReply(null);
 926    }
 927
 928    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 929        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 930                && trustKeysIfNeeded(requestCode);
 931    }
 932
 933    protected boolean trustKeysIfNeeded(int requestCode) {
 934        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 935        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 936        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 937        boolean hasUndecidedOwn =
 938                !axolotlService
 939                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 940                        .isEmpty();
 941        boolean hasUndecidedContacts =
 942                !axolotlService
 943                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 944                        .isEmpty();
 945        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 946        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 947        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 948        if (hasUndecidedOwn
 949                || hasUndecidedContacts
 950                || hasPendingKeys
 951                || hasNoTrustedKeys
 952                || hasUnaccepted
 953                || downloadInProgress) {
 954            axolotlService.createSessionsIfNeeded(conversation);
 955            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 956            String[] contacts = new String[targets.size()];
 957            for (int i = 0; i < contacts.length; ++i) {
 958                contacts[i] = targets.get(i).toString();
 959            }
 960            intent.putExtra("contacts", contacts);
 961            intent.putExtra(
 962                    EXTRA_ACCOUNT,
 963                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 964            intent.putExtra("conversation", conversation.getUuid());
 965            startActivityForResult(intent, requestCode);
 966            return true;
 967        } else {
 968            return false;
 969        }
 970    }
 971
 972    public void updateChatMsgHint() {
 973        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 974        if (conversation.getCorrectingMessage() != null) {
 975            this.binding.textInputHint.setVisibility(View.GONE);
 976            this.binding.textinput.setHint(R.string.send_corrected_message);
 977            binding.conversationViewPager.setCurrentItem(0);
 978        } else if (multi && conversation.getNextCounterpart() != null) {
 979            this.binding.textinput.setHint(R.string.send_message);
 980            this.binding.textInputHint.setVisibility(View.VISIBLE);
 981            this.binding.textInputHint.setText(
 982                    getString(
 983                            R.string.send_private_message_to,
 984                            conversation.getNextCounterpart().getResource()));
 985            binding.conversationViewPager.setCurrentItem(0);
 986        } else if (multi && !conversation.getMucOptions().participating()) {
 987            this.binding.textInputHint.setVisibility(View.GONE);
 988            this.binding.textinput.setHint(R.string.you_are_not_participating);
 989        } else {
 990            this.binding.textInputHint.setVisibility(View.GONE);
 991            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 992            getActivity().invalidateOptionsMenu();
 993        }
 994
 995        binding.messagesView.post(this::updateThreadFromLastMessage);
 996    }
 997
 998    public void setupIme() {
 999        this.binding.textinput.refreshIme();
1000    }
1001
1002    private void handleActivityResult(ActivityResult activityResult) {
1003        if (activityResult.resultCode == Activity.RESULT_OK) {
1004            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
1005        } else {
1006            handleNegativeActivityResult(activityResult.requestCode);
1007        }
1008    }
1009
1010    private void handlePositiveActivityResult(int requestCode, final Intent data) {
1011        switch (requestCode) {
1012            case REQUEST_SAVE_STICKER:
1013                final DocumentFile df = DocumentFile.fromSingleUri(activity, data.getData());
1014                final File f = savingAsSticker;
1015                savingAsSticker = null;
1016                try {
1017                    activity.xmppConnectionService.getFileBackend().copyFileToDocumentFile(activity, f, df);
1018                    Toast.makeText(activity, "Sticker saved", Toast.LENGTH_SHORT).show();
1019                } catch (final FileBackend.FileCopyException e) {
1020                    Toast.makeText(activity, e.getResId(), Toast.LENGTH_SHORT).show();
1021                }
1022                break;
1023            case REQUEST_TRUST_KEYS_TEXT:
1024                sendMessage();
1025                break;
1026            case REQUEST_TRUST_KEYS_ATTACHMENTS:
1027                commitAttachments();
1028                break;
1029            case REQUEST_START_AUDIO_CALL:
1030                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1031                break;
1032            case REQUEST_START_VIDEO_CALL:
1033                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1034                break;
1035            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
1036                final List<Attachment> imageUris =
1037                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
1038                mediaPreviewAdapter.addMediaPreviews(imageUris);
1039                toggleInputMethod();
1040                break;
1041            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1042                final Uri takePhotoUri = pendingTakePhotoUri.pop();
1043                if (takePhotoUri != null) {
1044                    mediaPreviewAdapter.addMediaPreviews(
1045                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
1046                    toggleInputMethod();
1047                } else {
1048                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
1049                }
1050                break;
1051            case ATTACHMENT_CHOICE_CHOOSE_FILE:
1052            case ATTACHMENT_CHOICE_RECORD_VIDEO:
1053            case ATTACHMENT_CHOICE_RECORD_VOICE:
1054                final Attachment.Type type =
1055                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
1056                                ? Attachment.Type.RECORDING
1057                                : Attachment.Type.FILE;
1058                final List<Attachment> fileUris =
1059                        Attachment.extractAttachments(getActivity(), data, type);
1060                mediaPreviewAdapter.addMediaPreviews(fileUris);
1061                toggleInputMethod();
1062                break;
1063            case ATTACHMENT_CHOICE_LOCATION:
1064                final double latitude = data.getDoubleExtra("latitude", 0);
1065                final double longitude = data.getDoubleExtra("longitude", 0);
1066                final int accuracy = data.getIntExtra("accuracy", 0);
1067                final Uri geo;
1068                if (accuracy > 0) {
1069                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1070                } else {
1071                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1072                }
1073                mediaPreviewAdapter.addMediaPreviews(
1074                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1075                toggleInputMethod();
1076                break;
1077            case REQUEST_INVITE_TO_CONVERSATION:
1078                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1079                if (invite != null) {
1080                    if (invite.execute(activity)) {
1081                        activity.mToast =
1082                                Toast.makeText(
1083                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1084                        activity.mToast.show();
1085                    }
1086                }
1087                break;
1088        }
1089    }
1090
1091    private void commitAttachments() {
1092        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1093        if (anyNeedsExternalStoragePermission(attachments)
1094                && !hasPermissions(
1095                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1096            return;
1097        }
1098        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1099            return;
1100        }
1101        final PresenceSelector.OnPresenceSelected callback =
1102                () -> {
1103                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1104                        final Attachment attachment = i.next();
1105                        if (attachment.getType() == Attachment.Type.LOCATION) {
1106                            attachLocationToConversation(conversation, attachment.getUri());
1107                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1108                            Log.d(
1109                                    Config.LOGTAG,
1110                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1111                            attachImageToConversation(
1112                                    conversation, attachment.getUri(), attachment.getMime());
1113                        } else {
1114                            Log.d(
1115                                    Config.LOGTAG,
1116                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1117                            attachFileToConversation(
1118                                    conversation, attachment.getUri(), attachment.getMime());
1119                        }
1120                    }
1121                    mediaPreviewAdapter.notifyDataSetChanged();
1122                    toggleInputMethod();
1123                };
1124        if (conversation == null
1125                || conversation.getMode() == Conversation.MODE_MULTI
1126                || Attachment.canBeSendInband(attachments)
1127                || (conversation.getAccount().httpUploadAvailable()
1128                        && FileBackend.allFilesUnderSize(
1129                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1130            callback.onPresenceSelected();
1131        } else {
1132            activity.selectPresence(conversation, callback);
1133        }
1134        setupReply(null);
1135    }
1136
1137    private static boolean anyNeedsExternalStoragePermission(
1138            final Collection<Attachment> attachments) {
1139        for (final Attachment attachment : attachments) {
1140            if (attachment.getType() != Attachment.Type.LOCATION) {
1141                return true;
1142            }
1143        }
1144        return false;
1145    }
1146
1147    public void toggleInputMethod() {
1148        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1149        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1150        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1151        updateSendButton();
1152    }
1153
1154    private void handleNegativeActivityResult(int requestCode) {
1155        switch (requestCode) {
1156            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1157                if (pendingTakePhotoUri.clear()) {
1158                    Log.d(
1159                            Config.LOGTAG,
1160                            "cleared pending photo uri after negative activity result");
1161                }
1162                break;
1163        }
1164    }
1165
1166    @Override
1167    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1168        super.onActivityResult(requestCode, resultCode, data);
1169        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1170        if (activity != null && activity.xmppConnectionService != null) {
1171            handleActivityResult(activityResult);
1172        } else {
1173            this.postponedActivityResult.push(activityResult);
1174        }
1175    }
1176
1177    public void unblockConversation(final Blockable conversation) {
1178        activity.xmppConnectionService.sendUnblockRequest(conversation);
1179    }
1180
1181    @Override
1182    public void onAttach(Activity activity) {
1183        super.onAttach(activity);
1184        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1185        if (activity instanceof ConversationsActivity) {
1186            this.activity = (ConversationsActivity) activity;
1187        } else {
1188            throw new IllegalStateException(
1189                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1190        }
1191    }
1192
1193    @Override
1194    public void onDetach() {
1195        super.onDetach();
1196        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1197    }
1198
1199    @Override
1200    public void onCreate(Bundle savedInstanceState) {
1201        super.onCreate(savedInstanceState);
1202        setHasOptionsMenu(true);
1203        activity.getOnBackPressedDispatcher().addCallback(backPressedLeaveSingleThread);
1204    }
1205
1206    @Override
1207    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1208        menuInflater.inflate(R.menu.fragment_conversation, menu);
1209        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1210        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1211        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1212        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1213        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1214        final MenuItem menuCall = menu.findItem(R.id.action_call);
1215        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1216        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1217        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1218
1219        if (conversation != null) {
1220            if (conversation.getMode() == Conversation.MODE_MULTI) {
1221                menuContactDetails.setVisible(false);
1222                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1223                menuMucDetails.setTitle(
1224                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1225                                ? R.string.action_muc_details
1226                                : R.string.channel_details);
1227                menuCall.setVisible(false);
1228                menuOngoingCall.setVisible(false);
1229            } else {
1230                final XmppConnectionService service =
1231                        activity == null ? null : activity.xmppConnectionService;
1232                final Optional<OngoingRtpSession> ongoingRtpSession =
1233                        service == null
1234                                ? Optional.absent()
1235                                : service.getJingleConnectionManager()
1236                                        .getOngoingRtpConnection(conversation.getContact());
1237                if (ongoingRtpSession.isPresent()) {
1238                    menuOngoingCall.setVisible(true);
1239                    menuCall.setVisible(false);
1240                } else {
1241                    menuOngoingCall.setVisible(false);
1242                    final RtpCapability.Capability rtpCapability =
1243                            RtpCapability.check(conversation.getContact());
1244                    final boolean cameraAvailable =
1245                            activity != null && activity.isCameraFeatureAvailable();
1246                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1247                    menuVideoCall.setVisible(
1248                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1249                }
1250                menuContactDetails.setVisible(!this.conversation.withSelf());
1251                menuMucDetails.setVisible(false);
1252                menuInviteContact.setVisible(
1253                        service != null
1254                                && service.findConferenceServer(conversation.getAccount()) != null);
1255            }
1256            if (conversation.isMuted()) {
1257                menuMute.setVisible(false);
1258            } else {
1259                menuUnmute.setVisible(false);
1260            }
1261            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1262            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1263            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1264                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1265            } else {
1266                menuTogglePinned.setTitle(R.string.add_to_favorites);
1267            }
1268        }
1269        super.onCreateOptionsMenu(menu, menuInflater);
1270    }
1271
1272    @Override
1273    public View onCreateView(
1274            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1275        this.binding =
1276                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1277        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1278
1279        binding.textinput.addTextChangedListener(
1280                new StylingHelper.MessageEditorStyler(binding.textinput));
1281
1282        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1283        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1284
1285        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1286        binding.contextPreviewCancel.setOnClickListener((v) -> {
1287            conversation.setUserSelectedThread(false);
1288            setupReply(null);
1289        });
1290
1291        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1292        binding.messagesView.setOnScrollListener(mOnScrollListener);
1293        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1294        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1295        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1296        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1297        messageListAdapter.setOnContactPictureClicked(this);
1298        messageListAdapter.setOnContactPictureLongClicked(this);
1299        messageListAdapter.setOnInlineImageLongClicked(this);
1300        binding.messagesView.setAdapter(messageListAdapter);
1301
1302        registerForContextMenu(binding.messagesView);
1303
1304        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1305            this.binding.textinput.setCustomInsertionActionModeCallback(
1306                    new EditMessageActionModeCallback(this.binding.textinput));
1307        }
1308
1309        messageListAdapter.setOnMessageBoxClicked(message -> {
1310            setThread(message.getThread());
1311            conversation.setUserSelectedThread(true);
1312        });
1313
1314        messageListAdapter.setOnMessageBoxSwiped(message -> {
1315            quoteMessage(message);
1316        });
1317
1318        binding.threadIdenticonLayout.setOnClickListener(v -> {
1319            boolean wasLocked = conversation.getLockThread();
1320            conversation.setLockThread(false);
1321            backPressedLeaveSingleThread.setEnabled(false);
1322            if (wasLocked) {
1323                conversation.setUserSelectedThread(false);
1324                refresh();
1325                updateThreadFromLastMessage();
1326            } else {
1327                newThread();
1328                conversation.setUserSelectedThread(true);
1329                newThreadTutorialToast("Switched to new thread");
1330            }
1331        });
1332
1333        binding.threadIdenticonLayout.setOnLongClickListener(v -> {
1334            boolean wasLocked = conversation.getLockThread();
1335            conversation.setLockThread(false);
1336            backPressedLeaveSingleThread.setEnabled(false);
1337            setThread(null);
1338            conversation.setUserSelectedThread(true);
1339            if (wasLocked) refresh();
1340            newThreadTutorialToast("Cleared thread");
1341            return true;
1342        });
1343
1344        return binding.getRoot();
1345    }
1346
1347    protected void newThreadTutorialToast(String s) {
1348        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
1349        final int tutorialCount = p.getInt("thread_tutorial", 0);
1350        if (tutorialCount < 5) {
1351            Toast.makeText(activity, s, Toast.LENGTH_SHORT).show();
1352            p.edit().putInt("thread_tutorial", tutorialCount + 1).apply();
1353        }
1354    }
1355
1356    @Override
1357    public void onDestroyView() {
1358        super.onDestroyView();
1359        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1360        messageListAdapter.setOnContactPictureClicked(null);
1361        messageListAdapter.setOnContactPictureLongClicked(null);
1362        messageListAdapter.setOnInlineImageLongClicked(null);
1363        if (conversation != null) conversation.setupViewPager(null, null);
1364    }
1365
1366    private void quoteText(String text) {
1367        if (binding.textinput.isEnabled()) {
1368            binding.textinput.insertAsQuote(text);
1369            binding.textinput.requestFocus();
1370            InputMethodManager inputMethodManager =
1371                    (InputMethodManager)
1372                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1373            if (inputMethodManager != null) {
1374                inputMethodManager.showSoftInput(
1375                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1376            }
1377        }
1378    }
1379
1380    private void quoteMessage(Message message) {
1381        setThread(message.getThread());
1382        conversation.setUserSelectedThread(true);
1383        if (message.getThread() == null) newThread();
1384        setupReply(message);
1385    }
1386
1387    private void setupReply(Message message) {
1388        conversation.setReplyTo(message);
1389        if (message == null) {
1390            binding.contextPreview.setVisibility(View.GONE);
1391            return;
1392        }
1393
1394        SpannableStringBuilder body = message.getSpannableBody(null, null);
1395        if (message.isFileOrImage() || message.isOOb()) body.append(" 🖼️");
1396        messageListAdapter.handleTextQuotes(body, activity.isDarkTheme());
1397        binding.contextPreviewText.setText(body);
1398        binding.contextPreview.setVisibility(View.VISIBLE);
1399    }
1400
1401    private void setThread(Element thread) {
1402        this.conversation.setThread(thread);
1403        binding.threadIdenticon.setAlpha(0f);
1404        binding.threadIdenticonLock.setVisibility(this.conversation.getLockThread() ? View.VISIBLE : View.GONE);
1405        if (thread != null) {
1406            final String threadId = thread.getContent();
1407            if (threadId != null) {
1408                binding.threadIdenticon.setAlpha(1f);
1409                binding.threadIdenticon.setColor(UIHelper.getColorForName(threadId));
1410                binding.threadIdenticon.setHash(UIHelper.identiconHash(threadId));
1411            }
1412        }
1413        updateSendButton();
1414    }
1415
1416    @Override
1417    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1418        // This should cancel any remaining click events that would otherwise trigger links
1419        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1420        synchronized (this.messageList) {
1421            super.onCreateContextMenu(menu, v, menuInfo);
1422            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1423            this.selectedMessage = this.messageList.get(acmi.position);
1424            populateContextMenu(menu);
1425        }
1426    }
1427
1428    private void populateContextMenu(ContextMenu menu) {
1429        final Message m = this.selectedMessage;
1430        final Transferable t = m.getTransferable();
1431        Message relevantForCorrection = m;
1432        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1433            relevantForCorrection = relevantForCorrection.next();
1434        }
1435        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1436
1437            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1438                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1439                return;
1440            }
1441
1442            if (m.getStatus() == Message.STATUS_RECEIVED
1443                    && t != null
1444                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1445                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1446                return;
1447            }
1448
1449            final boolean deleted = m.isDeleted();
1450            final boolean encrypted =
1451                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1452                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1453            final boolean receiving =
1454                    m.getStatus() == Message.STATUS_RECEIVED
1455                            && (t instanceof JingleFileTransferConnection
1456                                    || t instanceof HttpDownloadConnection);
1457            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1458            MenuItem openWith = menu.findItem(R.id.open_with);
1459            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1460            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1461            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1462            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1463            MenuItem retractMessage = menu.findItem(R.id.retract_message);
1464            MenuItem moderateMessage = menu.findItem(R.id.moderate_message);
1465            MenuItem onlyThisThread = menu.findItem(R.id.only_this_thread);
1466            MenuItem shareWith = menu.findItem(R.id.share_with);
1467            MenuItem sendAgain = menu.findItem(R.id.send_again);
1468            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1469            MenuItem saveAsSticker = menu.findItem(R.id.save_as_sticker);
1470            MenuItem downloadFile = menu.findItem(R.id.download_file);
1471            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1472            MenuItem blockMedia = menu.findItem(R.id.block_media);
1473            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1474            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1475            onlyThisThread.setVisible(!conversation.getLockThread() && m.getThread() != null);
1476            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1477            final boolean showError =
1478                    m.getStatus() == Message.STATUS_SEND_FAILED
1479                            && m.getErrorMessage() != null
1480                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1481            if (!encrypted && !m.getBody().equals("")) {
1482                copyMessage.setVisible(true);
1483            }
1484            quoteMessage.setVisible(!encrypted && !showError);
1485            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1486                retryDecryption.setVisible(true);
1487            }
1488            if (!showError
1489                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1490                    && !m.isGeoUri()
1491                    && relevantForCorrection.isLastCorrectableMessage()
1492                    && m.getConversation() instanceof Conversation) {
1493                correctMessage.setVisible(true);
1494                if (!relevantForCorrection.getBody().equals("") && !relevantForCorrection.getBody().equals(" ")) retractMessage.setVisible(true);
1495            }
1496            if (relevantForCorrection.getReactions() != null) {
1497                correctMessage.setVisible(false);
1498                retractMessage.setVisible(true);
1499            }
1500            if (conversation.getMode() == Conversation.MODE_MULTI && m.getServerMsgId() != null && m.getModerated() == null && conversation.getMucOptions().getSelf().getRole().ranks(MucOptions.Role.MODERATOR) && conversation.getMucOptions().hasFeature("urn:xmpp:message-moderate:0")) {
1501                moderateMessage.setVisible(true);
1502            }
1503            if ((m.isFileOrImage() && !deleted && !receiving)
1504                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1505                            && !unInitiatedButKnownSize
1506                            && t == null) {
1507                shareWith.setVisible(true);
1508            }
1509            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1510                sendAgain.setVisible(true);
1511            }
1512            if (m.hasFileOnRemoteHost()
1513                    || m.isGeoUri()
1514                    || m.treatAsDownloadable()
1515                    || unInitiatedButKnownSize
1516                    || t instanceof HttpDownloadConnection) {
1517                copyUrl.setVisible(true);
1518            }
1519            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1520                downloadFile.setVisible(true);
1521                downloadFile.setTitle(
1522                        activity.getString(
1523                                R.string.download_x_file,
1524                                UIHelper.getFileDescriptionString(activity, m)));
1525            }
1526            final boolean waitingOfferedSending =
1527                    m.getStatus() == Message.STATUS_WAITING
1528                            || m.getStatus() == Message.STATUS_UNSEND
1529                            || m.getStatus() == Message.STATUS_OFFERED;
1530            final boolean cancelable =
1531                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1532            if (cancelable) {
1533                cancelTransmission.setVisible(true);
1534            }
1535            if (m.isFileOrImage() && !deleted && !cancelable) {
1536                final String path = m.getRelativeFilePath();
1537                if (path == null
1538                        || !path.startsWith("/")
1539                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1540                    saveAsSticker.setVisible(true);
1541                    blockMedia.setVisible(true);
1542                    deleteFile.setVisible(true);
1543                    deleteFile.setTitle(
1544                            activity.getString(
1545                                    R.string.delete_x_file,
1546                                    UIHelper.getFileDescriptionString(activity, m)));
1547                }
1548            }
1549
1550            if (m.getFileParams() != null && !m.getFileParams().getThumbnails().isEmpty()) {
1551                // We might be showing a thumbnail worth blocking
1552                blockMedia.setVisible(true);
1553            }
1554            if (showError) {
1555                showErrorMessage.setVisible(true);
1556            }
1557            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1558            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1559                    || (mime != null && mime.startsWith("audio/"))) {
1560                openWith.setVisible(true);
1561            }
1562        }
1563    }
1564
1565    @Override
1566    public boolean onContextItemSelected(MenuItem item) {
1567        switch (item.getItemId()) {
1568            case R.id.share_with:
1569                ShareUtil.share(activity, selectedMessage);
1570                return true;
1571            case R.id.correct_message:
1572                correctMessage(selectedMessage);
1573                return true;
1574            case R.id.retract_message:
1575                new AlertDialog.Builder(activity)
1576                    .setTitle(R.string.retract_message)
1577                    .setMessage("Do you really want to retract this message?")
1578                    .setPositiveButton(R.string.yes, (dialog, whichButton) -> {
1579                        Message message = selectedMessage;
1580                        while (message.mergeable(message.next())) {
1581                            message = message.next();
1582                        }
1583                        Element reactions = message.getReactions();
1584                        if (reactions != null) {
1585                            final Message previousReaction = conversation.findMessageReactingTo(reactions.getAttribute("id"), null);
1586                            if (previousReaction != null) reactions = previousReaction.getReactions();
1587                            for (Element el : reactions.getChildren()) {
1588                                if (message.getQuoteableBody().endsWith(el.getContent())) {
1589                                    reactions.removeChild(el);
1590                                }
1591                            }
1592                            message.setReactions(reactions);
1593                            if (previousReaction != null) {
1594                                previousReaction.setReactions(reactions);
1595                                activity.xmppConnectionService.updateMessage(previousReaction);
1596                            }
1597                        }
1598                        message.setBody(" ");
1599                        message.putEdited(message.getUuid(), message.getServerMsgId());
1600                        message.setServerMsgId(null);
1601                        message.setUuid(UUID.randomUUID().toString());
1602                        sendMessage(message);
1603                    })
1604                    .setNegativeButton(R.string.no, null).show();
1605                return true;
1606            case R.id.moderate_message:
1607                activity.quickEdit("Spam", (reason) -> {
1608                    activity.xmppConnectionService.moderateMessage(conversation.getAccount(), selectedMessage, reason);
1609                    return null;
1610                }, R.string.moderate_reason, false, false, true);
1611                return true;
1612            case R.id.copy_message:
1613                ShareUtil.copyToClipboard(activity, selectedMessage);
1614                return true;
1615            case R.id.quote_message:
1616                quoteMessage(selectedMessage);
1617                return true;
1618            case R.id.send_again:
1619                resendMessage(selectedMessage);
1620                return true;
1621            case R.id.copy_url:
1622                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1623                return true;
1624            case R.id.save_as_sticker:
1625                saveAsSticker(selectedMessage);
1626                return true;
1627            case R.id.download_file:
1628                startDownloadable(selectedMessage);
1629                return true;
1630            case R.id.cancel_transmission:
1631                cancelTransmission(selectedMessage);
1632                return true;
1633            case R.id.retry_decryption:
1634                retryDecryption(selectedMessage);
1635                return true;
1636            case R.id.block_media:
1637                new AlertDialog.Builder(activity)
1638                    .setTitle(R.string.block_media)
1639                    .setMessage("Do you really want to block this media in all messages?")
1640                    .setPositiveButton(R.string.yes, (dialog, whichButton) -> {
1641                        List<Element> thumbs = selectedMessage.getFileParams() != null ? selectedMessage.getFileParams().getThumbnails() : null;
1642                        if (thumbs != null && !thumbs.isEmpty()) {
1643                            for (Element thumb : thumbs) {
1644                                Uri uri = Uri.parse(thumb.getAttribute("uri"));
1645                                if (uri.getScheme().equals("cid")) {
1646                                    Cid cid = BobTransfer.cid(uri);
1647                                    if (cid == null) continue;
1648                                    DownloadableFile f = activity.xmppConnectionService.getFileForCid(cid);
1649                                    activity.xmppConnectionService.blockMedia(f);
1650                                    activity.xmppConnectionService.evictPreview(f);
1651                                    f.delete();
1652                                }
1653                            }
1654                        }
1655                        File f = activity.xmppConnectionService.getFileBackend().getFile(selectedMessage);
1656                        activity.xmppConnectionService.blockMedia(f);
1657                        activity.xmppConnectionService.getFileBackend().deleteFile(selectedMessage);
1658                        selectedMessage.setDeleted(true);
1659                        activity.xmppConnectionService.evictPreview(f);
1660                        activity.xmppConnectionService.updateMessage(selectedMessage, false);
1661                        activity.onConversationsListItemUpdated();
1662                        refresh();
1663                    })
1664                    .setNegativeButton(R.string.no, null).show();
1665                return true;
1666            case R.id.delete_file:
1667                deleteFile(selectedMessage);
1668                return true;
1669            case R.id.show_error_message:
1670                showErrorMessage(selectedMessage);
1671                return true;
1672            case R.id.open_with:
1673                openWith(selectedMessage);
1674                return true;
1675            case R.id.only_this_thread:
1676                conversation.setLockThread(true);
1677                backPressedLeaveSingleThread.setEnabled(true);
1678                setThread(selectedMessage.getThread());
1679                refresh();
1680                return true;
1681            default:
1682                return super.onContextItemSelected(item);
1683        }
1684    }
1685
1686    @Override
1687    public boolean onOptionsItemSelected(final MenuItem item) {
1688        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1689            return false;
1690        } else if (conversation == null) {
1691            return super.onOptionsItemSelected(item);
1692        }
1693        switch (item.getItemId()) {
1694            case R.id.encryption_choice_axolotl:
1695            case R.id.encryption_choice_pgp:
1696            case R.id.encryption_choice_none:
1697                handleEncryptionSelection(item);
1698                break;
1699            case R.id.attach_choose_picture:
1700            case R.id.attach_take_picture:
1701            case R.id.attach_record_video:
1702            case R.id.attach_choose_file:
1703            case R.id.attach_record_voice:
1704            case R.id.attach_location:
1705                handleAttachmentSelection(item);
1706                break;
1707            case R.id.action_search:
1708                startSearch();
1709                break;
1710            case R.id.action_archive:
1711                activity.xmppConnectionService.archiveConversation(conversation);
1712                break;
1713            case R.id.action_contact_details:
1714                activity.switchToContactDetails(conversation.getContact());
1715                break;
1716            case R.id.action_muc_details:
1717                ConferenceDetailsActivity.open(activity, conversation);
1718                break;
1719            case R.id.action_invite:
1720                startActivityForResult(
1721                        ChooseContactActivity.create(activity, conversation),
1722                        REQUEST_INVITE_TO_CONVERSATION);
1723                break;
1724            case R.id.action_clear_history:
1725                clearHistoryDialog(conversation);
1726                break;
1727            case R.id.action_mute:
1728                muteConversationDialog(conversation);
1729                break;
1730            case R.id.action_unmute:
1731                unMuteConversation(conversation);
1732                break;
1733            case R.id.action_block:
1734            case R.id.action_unblock:
1735                final Activity activity = getActivity();
1736                if (activity instanceof XmppActivity) {
1737                    BlockContactDialog.show((XmppActivity) activity, conversation);
1738                }
1739                break;
1740            case R.id.action_audio_call:
1741                checkPermissionAndTriggerAudioCall();
1742                break;
1743            case R.id.action_video_call:
1744                checkPermissionAndTriggerVideoCall();
1745                break;
1746            case R.id.action_ongoing_call:
1747                returnToOngoingCall();
1748                break;
1749            case R.id.action_toggle_pinned:
1750                togglePinned();
1751                break;
1752            case R.id.action_refresh_feature_discovery:
1753                refreshFeatureDiscovery();
1754                break;
1755            default:
1756                break;
1757        }
1758        return super.onOptionsItemSelected(item);
1759    }
1760
1761    public boolean onBackPressed() {
1762        boolean wasLocked = conversation.getLockThread();
1763        conversation.setLockThread(false);
1764        backPressedLeaveSingleThread.setEnabled(false);
1765        if (wasLocked) {
1766            conversation.setUserSelectedThread(false);
1767            refresh();
1768            updateThreadFromLastMessage();
1769            return true;
1770        }
1771        return false;
1772    }
1773
1774    private void startSearch() {
1775        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1776        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1777        startActivity(intent);
1778    }
1779
1780    private void returnToOngoingCall() {
1781        final Optional<OngoingRtpSession> ongoingRtpSession =
1782                activity.xmppConnectionService
1783                        .getJingleConnectionManager()
1784                        .getOngoingRtpConnection(conversation.getContact());
1785        if (ongoingRtpSession.isPresent()) {
1786            final OngoingRtpSession id = ongoingRtpSession.get();
1787            final Intent intent = new Intent(activity, RtpSessionActivity.class);
1788            intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, id.getAccount().getJid().asBareJid().toEscapedString());
1789            intent.putExtra(
1790                    RtpSessionActivity.EXTRA_ACCOUNT,
1791                    id.getAccount().getJid().asBareJid().toEscapedString());
1792            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1793            if (id instanceof AbstractJingleConnection.Id) {
1794                intent.setAction(Intent.ACTION_VIEW);
1795                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1796            } else if (id instanceof JingleConnectionManager.RtpSessionProposal) {
1797                if (((JingleConnectionManager.RtpSessionProposal) id).media.contains(Media.VIDEO)) {
1798                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1799                } else {
1800                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1801                }
1802            }
1803            activity.startActivity(intent);
1804        }
1805    }
1806
1807    private void refreshFeatureDiscovery() {
1808        for (Map.Entry<String, Presence> entry : conversation.getContact().getPresences().getPresencesMap().entrySet()) {
1809            Jid jid = conversation.getContact().getJid();
1810            if (!entry.getKey().equals("")) jid = jid.withResource(entry.getKey());
1811            activity.xmppConnectionService.fetchCaps(conversation.getAccount(), jid, entry.getValue(), () -> {
1812                if (activity == null) return;
1813                activity.runOnUiThread(() -> {
1814                    refresh();
1815                    refreshCommands();
1816                });
1817            });
1818        }
1819    }
1820
1821    private void togglePinned() {
1822        final boolean pinned =
1823                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1824        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1825        activity.xmppConnectionService.updateConversation(conversation);
1826        activity.invalidateOptionsMenu();
1827    }
1828
1829    private void checkPermissionAndTriggerAudioCall() {
1830        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1831            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1832            return;
1833        }
1834        final List<String> permissions;
1835        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1836            permissions =
1837                    Arrays.asList(
1838                            Manifest.permission.RECORD_AUDIO,
1839                            Manifest.permission.BLUETOOTH_CONNECT);
1840        } else {
1841            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1842        }
1843        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1844            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1845        }
1846    }
1847
1848    private void checkPermissionAndTriggerVideoCall() {
1849        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1850            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1851            return;
1852        }
1853        final List<String> permissions;
1854        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1855            permissions =
1856                    Arrays.asList(
1857                            Manifest.permission.RECORD_AUDIO,
1858                            Manifest.permission.CAMERA,
1859                            Manifest.permission.BLUETOOTH_CONNECT);
1860        } else {
1861            permissions =
1862                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1863        }
1864        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1865            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1866        }
1867    }
1868
1869    private void triggerRtpSession(final String action) {
1870        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy() != null) {
1871            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1872                    .show();
1873            return;
1874        }
1875        final Contact contact = conversation.getContact();
1876        if (contact.getPresences().anySupport(Namespace.JINGLE_MESSAGE)) {
1877            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1878        } else {
1879            final RtpCapability.Capability capability;
1880            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1881                capability = RtpCapability.Capability.VIDEO;
1882            } else {
1883                capability = RtpCapability.Capability.AUDIO;
1884            }
1885            PresenceSelector.selectFullJidForDirectRtpConnection(
1886                    activity,
1887                    contact,
1888                    capability,
1889                    fullJid -> {
1890                        triggerRtpSession(contact.getAccount(), fullJid, action);
1891                    });
1892        }
1893    }
1894
1895    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1896        final Intent intent = new Intent(activity, RtpSessionActivity.class);
1897        intent.setAction(action);
1898        intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, account.getJid().toEscapedString());
1899        intent.putExtra(RtpSessionActivity.EXTRA_WITH, with.toEscapedString());
1900        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1901        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
1902        startActivity(intent);
1903    }
1904
1905    private void handleAttachmentSelection(MenuItem item) {
1906        switch (item.getItemId()) {
1907            case R.id.attach_choose_picture:
1908                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1909                break;
1910            case R.id.attach_take_picture:
1911                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1912                break;
1913            case R.id.attach_record_video:
1914                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1915                break;
1916            case R.id.attach_choose_file:
1917                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1918                break;
1919            case R.id.attach_record_voice:
1920                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1921                break;
1922            case R.id.attach_location:
1923                attachFile(ATTACHMENT_CHOICE_LOCATION);
1924                break;
1925        }
1926    }
1927
1928    private void handleEncryptionSelection(MenuItem item) {
1929        if (conversation == null) {
1930            return;
1931        }
1932        final boolean updated;
1933        switch (item.getItemId()) {
1934            case R.id.encryption_choice_none:
1935                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1936                item.setChecked(true);
1937                break;
1938            case R.id.encryption_choice_pgp:
1939                if (activity.hasPgp()) {
1940                    if (conversation.getAccount().getPgpSignature() != null) {
1941                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1942                        item.setChecked(true);
1943                    } else {
1944                        updated = false;
1945                        activity.announcePgp(
1946                                conversation.getAccount(),
1947                                conversation,
1948                                null,
1949                                activity.onOpenPGPKeyPublished);
1950                    }
1951                } else {
1952                    activity.showInstallPgpDialog();
1953                    updated = false;
1954                }
1955                break;
1956            case R.id.encryption_choice_axolotl:
1957                Log.d(
1958                        Config.LOGTAG,
1959                        AxolotlService.getLogprefix(conversation.getAccount())
1960                                + "Enabled axolotl for Contact "
1961                                + conversation.getContact().getJid());
1962                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1963                item.setChecked(true);
1964                break;
1965            default:
1966                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1967                break;
1968        }
1969        if (updated) {
1970            activity.xmppConnectionService.updateConversation(conversation);
1971        }
1972        updateChatMsgHint();
1973        getActivity().invalidateOptionsMenu();
1974        activity.refreshUi();
1975    }
1976
1977    public void attachFile(final int attachmentChoice) {
1978        attachFile(attachmentChoice, true);
1979    }
1980
1981    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1982        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1983            if (!hasPermissions(
1984                    attachmentChoice,
1985                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1986                    Manifest.permission.RECORD_AUDIO)) {
1987                return;
1988            }
1989        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1990                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1991            if (!hasPermissions(
1992                    attachmentChoice,
1993                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1994                    Manifest.permission.CAMERA)) {
1995                return;
1996            }
1997        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1998            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1999                return;
2000            }
2001        }
2002        if (updateRecentlyUsed) {
2003            storeRecentlyUsedQuickAction(attachmentChoice);
2004        }
2005        final int encryption = conversation.getNextEncryption();
2006        final int mode = conversation.getMode();
2007        if (encryption == Message.ENCRYPTION_PGP) {
2008            if (activity.hasPgp()) {
2009                if (mode == Conversation.MODE_SINGLE
2010                        && conversation.getContact().getPgpKeyId() != 0) {
2011                    activity.xmppConnectionService
2012                            .getPgpEngine()
2013                            .hasKey(
2014                                    conversation.getContact(),
2015                                    new UiCallback<Contact>() {
2016
2017                                        @Override
2018                                        public void userInputRequired(
2019                                                PendingIntent pi, Contact contact) {
2020                                            startPendingIntent(pi, attachmentChoice);
2021                                        }
2022
2023                                        @Override
2024                                        public void success(Contact contact) {
2025                                            invokeAttachFileIntent(attachmentChoice);
2026                                        }
2027
2028                                        @Override
2029                                        public void error(int error, Contact contact) {
2030                                            activity.replaceToast(getString(error));
2031                                        }
2032                                    });
2033                } else if (mode == Conversation.MODE_MULTI
2034                        && conversation.getMucOptions().pgpKeysInUse()) {
2035                    if (!conversation.getMucOptions().everybodyHasKeys()) {
2036                        Toast warning =
2037                                Toast.makeText(
2038                                        getActivity(),
2039                                        R.string.missing_public_keys,
2040                                        Toast.LENGTH_LONG);
2041                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2042                        warning.show();
2043                    }
2044                    invokeAttachFileIntent(attachmentChoice);
2045                } else {
2046                    showNoPGPKeyDialog(
2047                            false,
2048                            (dialog, which) -> {
2049                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2050                                activity.xmppConnectionService.updateConversation(conversation);
2051                                invokeAttachFileIntent(attachmentChoice);
2052                            });
2053                }
2054            } else {
2055                activity.showInstallPgpDialog();
2056            }
2057        } else {
2058            invokeAttachFileIntent(attachmentChoice);
2059        }
2060    }
2061
2062    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
2063        try {
2064            activity.getPreferences()
2065                    .edit()
2066                    .putString(
2067                            RECENTLY_USED_QUICK_ACTION,
2068                            SendButtonAction.of(attachmentChoice).toString())
2069                    .apply();
2070        } catch (IllegalArgumentException e) {
2071            // just do not save
2072        }
2073    }
2074
2075    @Override
2076    public void onRequestPermissionsResult(
2077            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
2078        final PermissionUtils.PermissionResult permissionResult =
2079                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
2080        if (grantResults.length > 0) {
2081            if (allGranted(permissionResult.grantResults)) {
2082                switch (requestCode) {
2083                    case REQUEST_START_DOWNLOAD:
2084                        if (this.mPendingDownloadableMessage != null) {
2085                            startDownloadable(this.mPendingDownloadableMessage);
2086                        }
2087                        break;
2088                    case REQUEST_ADD_EDITOR_CONTENT:
2089                        if (this.mPendingEditorContent != null) {
2090                            attachEditorContentToConversation(this.mPendingEditorContent);
2091                        }
2092                        break;
2093                    case REQUEST_COMMIT_ATTACHMENTS:
2094                        commitAttachments();
2095                        break;
2096                    case REQUEST_START_AUDIO_CALL:
2097                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
2098                        break;
2099                    case REQUEST_START_VIDEO_CALL:
2100                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
2101                        break;
2102                    default:
2103                        attachFile(requestCode);
2104                        break;
2105                }
2106            } else {
2107                @StringRes int res;
2108                String firstDenied =
2109                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
2110                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
2111                    res = R.string.no_microphone_permission;
2112                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
2113                    res = R.string.no_camera_permission;
2114                } else {
2115                    res = R.string.no_storage_permission;
2116                }
2117                Toast.makeText(
2118                                getActivity(),
2119                                getString(res, getString(R.string.app_name)),
2120                                Toast.LENGTH_SHORT)
2121                        .show();
2122            }
2123        }
2124        if (writeGranted(grantResults, permissions)) {
2125            if (activity != null && activity.xmppConnectionService != null) {
2126                activity.xmppConnectionService.getBitmapCache().evictAll();
2127                activity.xmppConnectionService.getDrawableCache().evictAll();
2128                activity.xmppConnectionService.restartFileObserver();
2129            }
2130            refresh();
2131        }
2132    }
2133
2134    public void startDownloadable(Message message) {
2135        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2136            this.mPendingDownloadableMessage = message;
2137            return;
2138        }
2139        Transferable transferable = message.getTransferable();
2140        if (transferable != null) {
2141            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
2142                createNewConnection(message);
2143                return;
2144            }
2145            if (!transferable.start()) {
2146                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
2147                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2148                        .show();
2149            }
2150        } else if (message.treatAsDownloadable()
2151                || message.hasFileOnRemoteHost()
2152                || MessageUtils.unInitiatedButKnownSize(message)) {
2153            createNewConnection(message);
2154        } else {
2155            Log.d(
2156                    Config.LOGTAG,
2157                    message.getConversation().getAccount() + ": unable to start downloadable");
2158        }
2159    }
2160
2161    private void createNewConnection(final Message message) {
2162        if (!activity.xmppConnectionService.hasInternetConnection()) {
2163            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2164                    .show();
2165            return;
2166        }
2167        if (message.getOob() != null && message.getOob().getScheme().equalsIgnoreCase("cid")) {
2168            try {
2169                BobTransfer transfer = new BobTransfer.ForMessage(message, activity.xmppConnectionService);
2170                message.setTransferable(transfer);
2171                transfer.start();
2172            } catch (URISyntaxException e) {
2173                Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
2174            }
2175        } else {
2176            activity.xmppConnectionService
2177                    .getHttpConnectionManager()
2178                    .createNewDownloadConnection(message, true);
2179        }
2180    }
2181
2182    @SuppressLint("InflateParams")
2183    protected void clearHistoryDialog(final Conversation conversation) {
2184        final AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2185        builder.setTitle(getString(R.string.clear_conversation_history));
2186        final View dialogView =
2187                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
2188        final CheckBox endConversationCheckBox =
2189                dialogView.findViewById(R.id.end_conversation_checkbox);
2190        builder.setView(dialogView);
2191        builder.setNegativeButton(getString(R.string.cancel), null);
2192        builder.setPositiveButton(
2193                getString(R.string.confirm),
2194                (dialog, which) -> {
2195                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
2196                    if (endConversationCheckBox.isChecked()) {
2197                        this.activity.xmppConnectionService.archiveConversation(conversation);
2198                        this.activity.onConversationArchived(conversation);
2199                    } else {
2200                        activity.onConversationsListItemUpdated();
2201                        refresh();
2202                    }
2203                });
2204        builder.create().show();
2205    }
2206
2207    protected void muteConversationDialog(final Conversation conversation) {
2208        final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
2209        builder.setTitle(R.string.disable_notifications);
2210        final int[] durations = activity.getResources().getIntArray(R.array.mute_options_durations);
2211        final CharSequence[] labels = new CharSequence[durations.length];
2212        for (int i = 0; i < durations.length; ++i) {
2213            if (durations[i] == -1) {
2214                labels[i] = activity.getString(R.string.until_further_notice);
2215            } else {
2216                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
2217            }
2218        }
2219        builder.setItems(
2220                labels,
2221                (dialog, which) -> {
2222                    final long till;
2223                    if (durations[which] == -1) {
2224                        till = Long.MAX_VALUE;
2225                    } else {
2226                        till = System.currentTimeMillis() + (durations[which] * 1000L);
2227                    }
2228                    conversation.setMutedTill(till);
2229                    activity.xmppConnectionService.updateConversation(conversation);
2230                    activity.onConversationsListItemUpdated();
2231                    refresh();
2232                    activity.invalidateOptionsMenu();
2233                });
2234        builder.create().show();
2235    }
2236
2237    private boolean hasPermissions(int requestCode, List<String> permissions) {
2238        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
2239            final List<String> missingPermissions = new ArrayList<>();
2240            for (String permission : permissions) {
2241                if (Config.ONLY_INTERNAL_STORAGE
2242                        && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2243                    continue;
2244                }
2245                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2246                    missingPermissions.add(permission);
2247                }
2248            }
2249            if (missingPermissions.size() == 0) {
2250                return true;
2251            } else {
2252                requestPermissions(
2253                        missingPermissions.toArray(new String[0]),
2254                        requestCode);
2255                return false;
2256            }
2257        } else {
2258            return true;
2259        }
2260    }
2261
2262    private boolean hasPermissions(int requestCode, String... permissions) {
2263        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2264    }
2265
2266    public void unMuteConversation(final Conversation conversation) {
2267        conversation.setMutedTill(0);
2268        this.activity.xmppConnectionService.updateConversation(conversation);
2269        this.activity.onConversationsListItemUpdated();
2270        refresh();
2271        this.activity.invalidateOptionsMenu();
2272    }
2273
2274    protected void invokeAttachFileIntent(final int attachmentChoice) {
2275        Intent intent = new Intent();
2276        boolean chooser = false;
2277        switch (attachmentChoice) {
2278            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2279                intent.setAction(Intent.ACTION_GET_CONTENT);
2280                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2281                intent.setType("image/*");
2282                chooser = true;
2283                break;
2284            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2285                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2286                break;
2287            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2288                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2289                pendingTakePhotoUri.push(uri);
2290                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2291                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2292                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2293                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2294                break;
2295            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2296                chooser = true;
2297                intent.setType("*/*");
2298                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2299                intent.addCategory(Intent.CATEGORY_OPENABLE);
2300                intent.setAction(Intent.ACTION_GET_CONTENT);
2301                break;
2302            case ATTACHMENT_CHOICE_RECORD_VOICE:
2303                intent = new Intent(getActivity(), RecordingActivity.class);
2304                break;
2305            case ATTACHMENT_CHOICE_LOCATION:
2306                intent = GeoHelper.getFetchIntent(activity);
2307                break;
2308        }
2309        final Context context = getActivity();
2310        if (context == null) {
2311            return;
2312        }
2313        try {
2314            if (chooser) {
2315                startActivityForResult(
2316                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2317                        attachmentChoice);
2318            } else {
2319                startActivityForResult(intent, attachmentChoice);
2320            }
2321        } catch (final ActivityNotFoundException e) {
2322            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2323        }
2324    }
2325
2326    @Override
2327    public void onResume() {
2328        super.onResume();
2329        binding.messagesView.post(this::fireReadEvent);
2330    }
2331
2332    private void fireReadEvent() {
2333        if (activity != null && this.conversation != null) {
2334            String uuid = getLastVisibleMessageUuid();
2335            if (uuid != null) {
2336                activity.onConversationRead(this.conversation, uuid);
2337            }
2338        }
2339    }
2340
2341    private void newThread() {
2342        Element thread = new Element("thread", "jabber:client");
2343        thread.setContent(UUID.randomUUID().toString());
2344        setThread(thread);
2345    }
2346
2347    private void updateThreadFromLastMessage() {
2348        if (this.conversation != null && !this.conversation.getUserSelectedThread() && TextUtils.isEmpty(binding.textinput.getText())) {
2349            Message message = getLastVisibleMessage();
2350            if (message == null) {
2351                newThread();
2352            } else {
2353                setThread(message.getThread());
2354            }
2355        }
2356    }
2357
2358    private String getLastVisibleMessageUuid() {
2359        Message message =  getLastVisibleMessage();
2360        return message == null ? null : message.getUuid();
2361    }
2362
2363    private Message getLastVisibleMessage() {
2364        if (binding == null) {
2365            return null;
2366        }
2367        synchronized (this.messageList) {
2368            int pos = binding.messagesView.getLastVisiblePosition();
2369            if (pos >= 0) {
2370                Message message = null;
2371                for (int i = pos; i >= 0; --i) {
2372                    try {
2373                        message = (Message) binding.messagesView.getItemAtPosition(i);
2374                    } catch (IndexOutOfBoundsException e) {
2375                        // should not happen if we synchronize properly. however if that fails we
2376                        // just gonna try item -1
2377                        continue;
2378                    }
2379                    if (message.getType() != Message.TYPE_STATUS) {
2380                        break;
2381                    }
2382                }
2383                if (message != null) {
2384                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2385                        message = message.next();
2386                    }
2387                    return message;
2388                }
2389            }
2390        }
2391        return null;
2392    }
2393
2394    private void openWith(final Message message) {
2395        if (message.isGeoUri()) {
2396            GeoHelper.view(getActivity(), message);
2397        } else {
2398            final DownloadableFile file =
2399                    activity.xmppConnectionService.getFileBackend().getFile(message);
2400            ViewUtil.view(activity, file);
2401        }
2402    }
2403
2404    private void showErrorMessage(final Message message) {
2405        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2406        builder.setTitle(R.string.error_message);
2407        final String errorMessage = message.getErrorMessage();
2408        final String[] errorMessageParts =
2409                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2410        final String displayError;
2411        if (errorMessageParts.length == 2) {
2412            displayError = errorMessageParts[1];
2413        } else {
2414            displayError = errorMessage;
2415        }
2416        builder.setMessage(displayError);
2417        builder.setNegativeButton(
2418                R.string.copy_to_clipboard,
2419                (dialog, which) -> {
2420                    activity.copyTextToClipboard(displayError, R.string.error_message);
2421                    Toast.makeText(
2422                                    activity,
2423                                    R.string.error_message_copied_to_clipboard,
2424                                    Toast.LENGTH_SHORT)
2425                            .show();
2426                });
2427        builder.setPositiveButton(R.string.confirm, null);
2428        builder.create().show();
2429    }
2430
2431    public boolean onInlineImageLongClicked(Cid cid) {
2432        DownloadableFile f = activity.xmppConnectionService.getFileForCid(cid);
2433        if (f == null) return false;
2434
2435        saveAsSticker(f, null);
2436        return true;
2437    }
2438
2439    private void saveAsSticker(final Message m) {
2440        String existingName = m.getFileParams() != null && m.getFileParams().getName() != null ? m.getFileParams().getName() : "";
2441        existingName = existingName.lastIndexOf(".") == -1 ? existingName : existingName.substring(0, existingName.lastIndexOf("."));
2442        saveAsSticker(activity.xmppConnectionService.getFileBackend().getFile(m), existingName);
2443    }
2444
2445    private void saveAsSticker(final File file, final String name) {
2446        savingAsSticker = file;
2447
2448        Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
2449        intent.addCategory(Intent.CATEGORY_OPENABLE);
2450        intent.setType(MimeUtils.guessMimeTypeFromUri(activity, activity.xmppConnectionService.getFileBackend().getUriForFile(activity, file)));
2451        intent.putExtra(Intent.EXTRA_TITLE, name);
2452
2453        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2454        final String dir = p.getString("sticker_directory", "Stickers");
2455        if (dir.startsWith("content://")) {
2456            intent.putExtra("android.provider.extra.INITIAL_URI", Uri.parse(dir));
2457        } else {
2458            new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/" + dir + "/User Pack").mkdirs();
2459            Uri uri;
2460            if (Build.VERSION.SDK_INT >= 24) {
2461                Intent tmp = ((StorageManager) activity.getSystemService(Context.STORAGE_SERVICE)).getPrimaryStorageVolume().createOpenDocumentTreeIntent();
2462                uri = tmp.getParcelableExtra("android.provider.extra.INITIAL_URI");
2463                uri = Uri.parse(uri.toString().replace("/root/", "/document/") + "%3APictures%2F" + dir);
2464            } else {
2465                uri = Uri.parse("content://com.android.externalstorage.documents/document/primary%3APictures%2F" + dir);
2466            }
2467            intent.putExtra("android.provider.extra.INITIAL_URI", uri);
2468            intent.putExtra("android.content.extra.SHOW_ADVANCED", true);
2469        }
2470
2471        Toast.makeText(activity, "Choose a sticker pack to add this sticker to", Toast.LENGTH_SHORT).show();
2472        startActivityForResult(Intent.createChooser(intent, "Choose sticker pack"), REQUEST_SAVE_STICKER);
2473    }
2474
2475    private void deleteFile(final Message message) {
2476        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2477        builder.setNegativeButton(R.string.cancel, null);
2478        builder.setTitle(R.string.delete_file_dialog);
2479        builder.setMessage(R.string.delete_file_dialog_msg);
2480        builder.setPositiveButton(
2481                R.string.confirm,
2482                (dialog, which) -> {
2483                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2484                        message.setDeleted(true);
2485                        activity.xmppConnectionService.evictPreview(activity.xmppConnectionService.getFileBackend().getFile(message));
2486                        activity.xmppConnectionService.updateMessage(message, false);
2487                        activity.onConversationsListItemUpdated();
2488                        refresh();
2489                    }
2490                });
2491        builder.create().show();
2492    }
2493
2494    private void resendMessage(final Message message) {
2495        if (message.isFileOrImage()) {
2496            if (!(message.getConversation() instanceof Conversation)) {
2497                return;
2498            }
2499            final Conversation conversation = (Conversation) message.getConversation();
2500            final DownloadableFile file =
2501                    activity.xmppConnectionService.getFileBackend().getFile(message);
2502            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2503                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2504                if (!message.hasFileOnRemoteHost()
2505                        && xmppConnection != null
2506                        && conversation.getMode() == Conversational.MODE_SINGLE
2507                        && !xmppConnection
2508                                .getFeatures()
2509                                .httpUpload(message.getFileParams().getSize())) {
2510                    activity.selectPresence(
2511                            conversation,
2512                            () -> {
2513                                message.setCounterpart(conversation.getNextCounterpart());
2514                                activity.xmppConnectionService.resendFailedMessages(message);
2515                                new Handler()
2516                                        .post(
2517                                                () -> {
2518                                                    int size = messageList.size();
2519                                                    this.binding.messagesView.setSelection(
2520                                                            size - 1);
2521                                                });
2522                            });
2523                    return;
2524                }
2525            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2526                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2527                return;
2528            } else {
2529                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2530                message.setDeleted(true);
2531                activity.xmppConnectionService.updateMessage(message, false);
2532                activity.onConversationsListItemUpdated();
2533                refresh();
2534                return;
2535            }
2536        }
2537        activity.xmppConnectionService.resendFailedMessages(message);
2538        new Handler()
2539                .post(
2540                        () -> {
2541                            int size = messageList.size();
2542                            this.binding.messagesView.setSelection(size - 1);
2543                        });
2544    }
2545
2546    private void cancelTransmission(Message message) {
2547        Transferable transferable = message.getTransferable();
2548        if (transferable != null) {
2549            transferable.cancel();
2550        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2551            activity.xmppConnectionService.markMessage(
2552                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2553        }
2554    }
2555
2556    private void retryDecryption(Message message) {
2557        message.setEncryption(Message.ENCRYPTION_PGP);
2558        activity.onConversationsListItemUpdated();
2559        refresh();
2560        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2561    }
2562
2563    public void privateMessageWith(final Jid counterpart) {
2564        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2565            activity.xmppConnectionService.sendChatState(conversation);
2566        }
2567        this.binding.textinput.setText("");
2568        this.conversation.setNextCounterpart(counterpart);
2569        updateChatMsgHint();
2570        updateSendButton();
2571        updateEditablity();
2572    }
2573
2574    private void correctMessage(Message message) {
2575        while (message.mergeable(message.next())) {
2576            message = message.next();
2577        }
2578        this.conversation.setCorrectingMessage(message);
2579        final Editable editable = binding.textinput.getText();
2580        this.conversation.setDraftMessage(editable.toString());
2581        this.binding.textinput.setText("");
2582        this.binding.textinput.append(message.getBody());
2583    }
2584
2585    private void highlightInConference(String nick) {
2586        final Editable editable = this.binding.textinput.getText();
2587        String oldString = editable.toString().trim();
2588        final int pos = this.binding.textinput.getSelectionStart();
2589        if (oldString.isEmpty() || pos == 0) {
2590            editable.insert(0, nick + ": ");
2591        } else {
2592            final char before = editable.charAt(pos - 1);
2593            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2594            if (before == '\n') {
2595                editable.insert(pos, nick + ": ");
2596            } else {
2597                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2598                    if (NickValidityChecker.check(
2599                            conversation,
2600                            Arrays.asList(
2601                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2602                        editable.insert(pos - 2, ", " + nick);
2603                        return;
2604                    }
2605                }
2606                editable.insert(
2607                        pos,
2608                        (Character.isWhitespace(before) ? "" : " ")
2609                                + nick
2610                                + (Character.isWhitespace(after) ? "" : " "));
2611                if (Character.isWhitespace(after)) {
2612                    this.binding.textinput.setSelection(
2613                            this.binding.textinput.getSelectionStart() + 1);
2614                }
2615            }
2616        }
2617    }
2618
2619    @Override
2620    public void startActivityForResult(Intent intent, int requestCode) {
2621        final Activity activity = getActivity();
2622        if (activity instanceof ConversationsActivity) {
2623            ((ConversationsActivity) activity).clearPendingViewIntent();
2624        }
2625        super.startActivityForResult(intent, requestCode);
2626    }
2627
2628    @Override
2629    public void onSaveInstanceState(@NotNull Bundle outState) {
2630        super.onSaveInstanceState(outState);
2631        if (conversation != null) {
2632            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2633            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2634            final Uri uri = pendingTakePhotoUri.peek();
2635            if (uri != null) {
2636                outState.putString(STATE_PHOTO_URI, uri.toString());
2637            }
2638            final ScrollState scrollState = getScrollPosition();
2639            if (scrollState != null) {
2640                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2641            }
2642            final ArrayList<Attachment> attachments =
2643                    mediaPreviewAdapter == null
2644                            ? new ArrayList<>()
2645                            : mediaPreviewAdapter.getAttachments();
2646            if (attachments.size() > 0) {
2647                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2648            }
2649        }
2650    }
2651
2652    @Override
2653    public void onActivityCreated(Bundle savedInstanceState) {
2654        super.onActivityCreated(savedInstanceState);
2655        if (savedInstanceState == null) {
2656            return;
2657        }
2658        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2659        ArrayList<Attachment> attachments =
2660                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2661        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2662        if (uuid != null) {
2663            QuickLoader.set(uuid);
2664            this.pendingConversationsUuid.push(uuid);
2665            if (attachments != null && attachments.size() > 0) {
2666                this.pendingMediaPreviews.push(attachments);
2667            }
2668            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2669            if (takePhotoUri != null) {
2670                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2671            }
2672            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2673        }
2674    }
2675
2676    @Override
2677    public void onStart() {
2678        super.onStart();
2679        if (this.reInitRequiredOnStart && this.conversation != null) {
2680            final Bundle extras = pendingExtras.pop();
2681            reInit(this.conversation, extras != null);
2682            if (extras != null) {
2683                processExtras(extras);
2684            }
2685        } else if (conversation == null
2686                && activity != null
2687                && activity.xmppConnectionService != null) {
2688            final String uuid = pendingConversationsUuid.pop();
2689            Log.d(
2690                    Config.LOGTAG,
2691                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2692                            + uuid);
2693            if (uuid != null) {
2694                findAndReInitByUuidOrArchive(uuid);
2695            }
2696        }
2697    }
2698
2699    @Override
2700    public void onStop() {
2701        super.onStop();
2702        final Activity activity = getActivity();
2703        messageListAdapter.unregisterListenerInAudioPlayer();
2704        if (activity == null || !activity.isChangingConfigurations()) {
2705            hideSoftKeyboard(activity);
2706            messageListAdapter.stopAudioPlayer();
2707        }
2708        if (this.conversation != null) {
2709            final String msg = this.binding.textinput.getText().toString();
2710            storeNextMessage(msg);
2711            updateChatState(this.conversation, msg);
2712            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2713        }
2714        this.reInitRequiredOnStart = true;
2715    }
2716
2717    private void updateChatState(final Conversation conversation, final String msg) {
2718        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2719        Account.State status = conversation.getAccount().getStatus();
2720        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2721            activity.xmppConnectionService.sendChatState(conversation);
2722        }
2723    }
2724
2725    private void saveMessageDraftStopAudioPlayer() {
2726        final Conversation previousConversation = this.conversation;
2727        if (this.activity == null || this.binding == null || previousConversation == null) {
2728            return;
2729        }
2730        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2731        final String msg = this.binding.textinput.getText().toString();
2732        storeNextMessage(msg);
2733        updateChatState(this.conversation, msg);
2734        messageListAdapter.stopAudioPlayer();
2735        mediaPreviewAdapter.clearPreviews();
2736        toggleInputMethod();
2737    }
2738
2739    public void reInit(final Conversation conversation, final Bundle extras) {
2740        QuickLoader.set(conversation.getUuid());
2741        final boolean changedConversation = this.conversation != conversation;
2742        if (changedConversation) {
2743            this.saveMessageDraftStopAudioPlayer();
2744        }
2745        this.clearPending();
2746        if (this.reInit(conversation, extras != null)) {
2747            if (extras != null) {
2748                processExtras(extras);
2749            }
2750            this.reInitRequiredOnStart = false;
2751        } else {
2752            this.reInitRequiredOnStart = true;
2753            pendingExtras.push(extras);
2754        }
2755        resetUnreadMessagesCount();
2756    }
2757
2758    private void reInit(Conversation conversation) {
2759        reInit(conversation, false);
2760    }
2761
2762    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2763        if (conversation == null) {
2764            return false;
2765        }
2766        final Conversation originalConversation = this.conversation;
2767        this.conversation = conversation;
2768        // once we set the conversation all is good and it will automatically do the right thing in
2769        // onStart()
2770        if (this.activity == null || this.binding == null) {
2771            return false;
2772        }
2773
2774        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2775            activity.onConversationArchived(this.conversation);
2776            return false;
2777        }
2778
2779        setThread(conversation.getThread());
2780        setupReply(conversation.getReplyTo());
2781
2782        stopScrolling();
2783        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2784
2785        if (this.conversation.isRead() && hasExtras) {
2786            Log.d(Config.LOGTAG, "trimming conversation");
2787            this.conversation.trim();
2788        }
2789
2790        setupIme();
2791
2792        final boolean scrolledToBottomAndNoPending =
2793                this.scrolledToBottom() && pendingScrollState.peek() == null;
2794
2795        this.binding.textSendButton.setContentDescription(
2796                activity.getString(R.string.send_message_to_x, conversation.getName()));
2797        this.binding.textinput.setKeyboardListener(null);
2798        this.binding.textinput.setText("");
2799        final boolean participating =
2800                conversation.getMode() == Conversational.MODE_SINGLE
2801                        || conversation.getMucOptions().participating();
2802        if (participating) {
2803            this.binding.textinput.append(this.conversation.getNextMessage());
2804        }
2805        this.binding.textinput.setKeyboardListener(this);
2806        messageListAdapter.updatePreferences();
2807        refresh(false);
2808        activity.invalidateOptionsMenu();
2809        this.conversation.messagesLoaded.set(true);
2810        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2811
2812        if (hasExtras || scrolledToBottomAndNoPending) {
2813            resetUnreadMessagesCount();
2814            synchronized (this.messageList) {
2815                Log.d(Config.LOGTAG, "jump to first unread message");
2816                final Message first = conversation.getFirstUnreadMessage();
2817                final int bottom = Math.max(0, this.messageList.size() - 1);
2818                final int pos;
2819                final boolean jumpToBottom;
2820                if (first == null) {
2821                    pos = bottom;
2822                    jumpToBottom = true;
2823                } else {
2824                    int i = getIndexOf(first.getUuid(), this.messageList);
2825                    pos = i < 0 ? bottom : i;
2826                    jumpToBottom = false;
2827                }
2828                setSelection(pos, jumpToBottom);
2829            }
2830        }
2831
2832        this.binding.messagesView.post(this::fireReadEvent);
2833        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2834        // layout which might be unnecessary since we can *see* it
2835        activity.xmppConnectionService
2836                .getNotificationService()
2837                .setOpenConversation(this.conversation);
2838
2839        if (commandAdapter != null && conversation != originalConversation) {
2840            originalConversation.setupViewPager(null, null);
2841            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2842            refreshCommands();
2843        }
2844        if (commandAdapter == null && conversation != null) {
2845            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2846            commandAdapter = new CommandAdapter((XmppActivity) getActivity());
2847            binding.commandsView.setAdapter(commandAdapter);
2848            binding.commandsView.setOnItemClickListener((parent, view, position, id) -> {
2849                final Element command = commandAdapter.getItem(position);
2850                activity.startCommand(conversation.getAccount(), command.getAttributeAsJid("jid"), command.getAttribute("node"));
2851            });
2852            refreshCommands();
2853        }
2854
2855        return true;
2856    }
2857
2858    public void refreshForNewCaps() {
2859        refreshCommands();
2860    }
2861
2862    protected void refreshCommands() {
2863        if (commandAdapter == null) return;
2864
2865        Jid commandJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2866        if (commandJid == null) {
2867            conversation.hideViewPager();
2868        } else {
2869            conversation.showViewPager();
2870            activity.xmppConnectionService.fetchCommands(conversation.getAccount(), commandJid, (a, iq) -> {
2871                if (activity == null) return;
2872
2873                activity.runOnUiThread(() -> {
2874                    if (iq.getType() == IqPacket.TYPE.RESULT) {
2875                        binding.commandsViewProgressbar.setVisibility(View.GONE);
2876                        commandAdapter.clear();
2877                        for (Element child : iq.query().getChildren()) {
2878                            if (!"item".equals(child.getName()) || !Namespace.DISCO_ITEMS.equals(child.getNamespace())) continue;
2879                            commandAdapter.add(child);
2880                        }
2881                    }
2882
2883                    if (commandAdapter.getCount() < 1) conversation.hideViewPager();
2884                });
2885            });
2886        }
2887    }
2888
2889    private void resetUnreadMessagesCount() {
2890        lastMessageUuid = null;
2891        hideUnreadMessagesCount();
2892    }
2893
2894    private void hideUnreadMessagesCount() {
2895        if (this.binding == null) {
2896            return;
2897        }
2898        this.binding.scrollToBottomButton.setEnabled(false);
2899        this.binding.scrollToBottomButton.hide();
2900        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2901    }
2902
2903    private void setSelection(int pos, boolean jumpToBottom) {
2904        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2905        this.binding.messagesView.post(
2906                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2907        this.binding.messagesView.post(this::fireReadEvent);
2908    }
2909
2910    private boolean scrolledToBottom() {
2911        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2912    }
2913
2914    private void processExtras(final Bundle extras) {
2915        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2916        final String text = extras.getString(Intent.EXTRA_TEXT);
2917        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2918        final String node = extras.getString(ConversationsActivity.EXTRA_NODE);
2919        final String postInitAction =
2920                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2921        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2922        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2923        final boolean doNotAppend =
2924                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2925        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2926        final List<Uri> uris = extractUris(extras);
2927        if (uris != null && uris.size() > 0) {
2928            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2929                mediaPreviewAdapter.addMediaPreviews(
2930                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2931            } else {
2932                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2933                mediaPreviewAdapter.addMediaPreviews(
2934                        Attachment.of(getActivity(), cleanedUris, type));
2935            }
2936            toggleInputMethod();
2937            return;
2938        }
2939        if (nick != null) {
2940            if (pm) {
2941                Jid jid = conversation.getJid();
2942                try {
2943                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2944                    privateMessageWith(next);
2945                } catch (final IllegalArgumentException ignored) {
2946                    // do nothing
2947                }
2948            } else {
2949                final MucOptions mucOptions = conversation.getMucOptions();
2950                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2951                    highlightInConference(nick);
2952                }
2953            }
2954        } else {
2955            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2956                mediaPreviewAdapter.addMediaPreviews(
2957                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2958                toggleInputMethod();
2959                return;
2960            } else if (text != null && asQuote) {
2961                quoteText(text);
2962            } else {
2963                appendText(text, doNotAppend);
2964            }
2965        }
2966        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2967            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2968            return;
2969        }
2970        if ("call".equals(postInitAction)) {
2971            checkPermissionAndTriggerAudioCall();
2972        }
2973        if ("message".equals(postInitAction)) {
2974            binding.conversationViewPager.post(() -> {
2975                binding.conversationViewPager.setCurrentItem(0);
2976            });
2977        }
2978        if ("command".equals(postInitAction)) {
2979            binding.conversationViewPager.post(() -> {
2980                PagerAdapter adapter = binding.conversationViewPager.getAdapter();
2981                if (adapter != null && adapter.getCount() > 1) {
2982                    binding.conversationViewPager.setCurrentItem(1);
2983                }
2984                final String jid = extras.getString(ConversationsActivity.EXTRA_JID);
2985                Jid commandJid = null;
2986                if (jid != null) {
2987                    try {
2988                        commandJid = Jid.of(jid);
2989                    } catch (final IllegalArgumentException e) { }
2990                }
2991                if (commandJid == null || !commandJid.isFullJid()) {
2992                    final Jid discoJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2993                    if (discoJid != null) commandJid = discoJid;
2994                }
2995                if (node != null && commandJid != null) {
2996                    conversation.startCommand(commandFor(commandJid, node), activity.xmppConnectionService);
2997                }
2998            });
2999            return;
3000        }
3001        final Message message =
3002                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
3003        if (message != null) {
3004            startDownloadable(message);
3005        }
3006    }
3007
3008    private Element commandFor(final Jid jid, final String node) {
3009        if (commandAdapter != null) {
3010            for (int i = 0; i < commandAdapter.getCount(); i++) {
3011                Element command = commandAdapter.getItem(i);
3012                final String commandNode = command.getAttribute("node");
3013                if (commandNode == null || !commandNode.equals(node)) continue;
3014
3015                final Jid commandJid = command.getAttributeAsJid("jid");
3016                if (commandJid != null && !commandJid.asBareJid().equals(jid.asBareJid())) continue;
3017
3018                return command;
3019            }
3020        }
3021
3022        return new Element("command", Namespace.COMMANDS).setAttribute("name", node).setAttribute("node", node).setAttribute("jid", jid);
3023    }
3024
3025    private List<Uri> extractUris(final Bundle extras) {
3026        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
3027        if (uris != null) {
3028            return uris;
3029        }
3030        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
3031        if (uri != null) {
3032            return Collections.singletonList(uri);
3033        } else {
3034            return null;
3035        }
3036    }
3037
3038    private List<Uri> cleanUris(final List<Uri> uris) {
3039        final Iterator<Uri> iterator = uris.iterator();
3040        while (iterator.hasNext()) {
3041            final Uri uri = iterator.next();
3042            if (FileBackend.weOwnFile(uri)) {
3043                iterator.remove();
3044                Toast.makeText(
3045                                getActivity(),
3046                                R.string.security_violation_not_attaching_file,
3047                                Toast.LENGTH_SHORT)
3048                        .show();
3049            }
3050        }
3051        return uris;
3052    }
3053
3054    private boolean showBlockSubmenu(View view) {
3055        final Jid jid = conversation.getJid();
3056        final boolean showReject =
3057                !conversation.isWithStranger()
3058                        && conversation
3059                                .getContact()
3060                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
3061        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
3062        popupMenu.inflate(R.menu.block);
3063        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
3064        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
3065        popupMenu.setOnMenuItemClickListener(
3066                menuItem -> {
3067                    Blockable blockable;
3068                    switch (menuItem.getItemId()) {
3069                        case R.id.reject:
3070                            activity.xmppConnectionService.stopPresenceUpdatesTo(
3071                                    conversation.getContact());
3072                            updateSnackBar(conversation);
3073                            return true;
3074                        case R.id.block_domain:
3075                            blockable =
3076                                    conversation
3077                                            .getAccount()
3078                                            .getRoster()
3079                                            .getContact(jid.getDomain());
3080                            break;
3081                        default:
3082                            blockable = conversation;
3083                    }
3084                    BlockContactDialog.show(activity, blockable);
3085                    return true;
3086                });
3087        popupMenu.show();
3088        return true;
3089    }
3090
3091    private void updateSnackBar(final Conversation conversation) {
3092        final Account account = conversation.getAccount();
3093        final XmppConnection connection = account.getXmppConnection();
3094        final int mode = conversation.getMode();
3095        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
3096        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
3097            return;
3098        }
3099        if (account.getStatus() == Account.State.DISABLED) {
3100            showSnackbar(
3101                    R.string.this_account_is_disabled,
3102                    R.string.enable,
3103                    this.mEnableAccountListener);
3104        } else if (conversation.isBlocked()) {
3105            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
3106        } else if (contact != null
3107                && !contact.showInRoster()
3108                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
3109            showSnackbar(
3110                    R.string.contact_added_you,
3111                    R.string.add_back,
3112                    this.mAddBackClickListener,
3113                    this.mLongPressBlockListener);
3114        } else if (contact != null
3115                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
3116            showSnackbar(
3117                    R.string.contact_asks_for_presence_subscription,
3118                    R.string.allow,
3119                    this.mAllowPresenceSubscription,
3120                    this.mLongPressBlockListener);
3121        } else if (mode == Conversation.MODE_MULTI
3122                && !conversation.getMucOptions().online()
3123                && account.getStatus() == Account.State.ONLINE) {
3124            switch (conversation.getMucOptions().getError()) {
3125                case NICK_IN_USE:
3126                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
3127                    break;
3128                case NO_RESPONSE:
3129                    showSnackbar(R.string.joining_conference, 0, null);
3130                    break;
3131                case SERVER_NOT_FOUND:
3132                    if (conversation.receivedMessagesCount() > 0) {
3133                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
3134                    } else {
3135                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
3136                    }
3137                    break;
3138                case REMOTE_SERVER_TIMEOUT:
3139                    if (conversation.receivedMessagesCount() > 0) {
3140                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
3141                    } else {
3142                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
3143                    }
3144                    break;
3145                case PASSWORD_REQUIRED:
3146                    showSnackbar(
3147                            R.string.conference_requires_password,
3148                            R.string.enter_password,
3149                            enterPassword);
3150                    break;
3151                case BANNED:
3152                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
3153                    break;
3154                case MEMBERS_ONLY:
3155                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
3156                    break;
3157                case RESOURCE_CONSTRAINT:
3158                    showSnackbar(
3159                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
3160                    break;
3161                case KICKED:
3162                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
3163                    break;
3164                case TECHNICAL_PROBLEMS:
3165                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
3166                    break;
3167                case UNKNOWN:
3168                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
3169                    break;
3170                case INVALID_NICK:
3171                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
3172                case SHUTDOWN:
3173                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
3174                    break;
3175                case DESTROYED:
3176                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
3177                    break;
3178                case NON_ANONYMOUS:
3179                    showSnackbar(
3180                            R.string.group_chat_will_make_your_jabber_id_public,
3181                            R.string.join,
3182                            acceptJoin);
3183                    break;
3184                default:
3185                    hideSnackbar();
3186                    break;
3187            }
3188        } else if (account.hasPendingPgpIntent(conversation)) {
3189            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
3190        } else if (connection != null
3191                && connection.getFeatures().blocking()
3192                && conversation.countMessages() != 0
3193                && !conversation.isBlocked()
3194                && conversation.isWithStranger()) {
3195            showSnackbar(
3196                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
3197        } else {
3198            hideSnackbar();
3199        }
3200    }
3201
3202    @Override
3203    public void refresh() {
3204        if (this.binding == null) {
3205            Log.d(
3206                    Config.LOGTAG,
3207                    "ConversationFragment.refresh() skipped updated because view binding was null");
3208            return;
3209        }
3210        if (this.conversation != null
3211                && this.activity != null
3212                && this.activity.xmppConnectionService != null) {
3213            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
3214                activity.onConversationArchived(this.conversation);
3215                return;
3216            }
3217        }
3218        this.refresh(true);
3219    }
3220
3221    private void refresh(boolean notifyConversationRead) {
3222        synchronized (this.messageList) {
3223            if (this.conversation != null) {
3224                conversation.populateWithMessages(this.messageList);
3225                updateSnackBar(conversation);
3226                updateStatusMessages();
3227                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
3228                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
3229                    binding.unreadCountCustomView.setUnreadCount(
3230                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
3231                }
3232                this.messageListAdapter.notifyDataSetChanged();
3233                updateChatMsgHint();
3234                if (notifyConversationRead && activity != null) {
3235                    binding.messagesView.post(this::fireReadEvent);
3236                }
3237                updateSendButton();
3238                updateEditablity();
3239            }
3240        }
3241    }
3242
3243    protected void messageSent() {
3244        mSendingPgpMessage.set(false);
3245        this.binding.textinput.setText("");
3246        if (conversation.setCorrectingMessage(null)) {
3247            this.binding.textinput.append(conversation.getDraftMessage());
3248            conversation.setDraftMessage(null);
3249        }
3250        storeNextMessage();
3251        updateChatMsgHint();
3252        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
3253        final boolean prefScrollToBottom =
3254                p.getBoolean(
3255                        "scroll_to_bottom",
3256                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
3257        if (prefScrollToBottom || scrolledToBottom()) {
3258            new Handler()
3259                    .post(
3260                            () -> {
3261                                int size = messageList.size();
3262                                this.binding.messagesView.setSelection(size - 1);
3263                            });
3264        }
3265    }
3266
3267    private boolean storeNextMessage() {
3268        return storeNextMessage(this.binding.textinput.getText().toString());
3269    }
3270
3271    private boolean storeNextMessage(String msg) {
3272        final boolean participating =
3273                conversation.getMode() == Conversational.MODE_SINGLE
3274                        || conversation.getMucOptions().participating();
3275        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
3276                && participating
3277                && this.conversation.setNextMessage(msg)) {
3278            this.activity.xmppConnectionService.updateConversation(this.conversation);
3279            return true;
3280        }
3281        return false;
3282    }
3283
3284    public void doneSendingPgpMessage() {
3285        mSendingPgpMessage.set(false);
3286    }
3287
3288    public long getMaxHttpUploadSize(Conversation conversation) {
3289        final XmppConnection connection = conversation.getAccount().getXmppConnection();
3290        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
3291    }
3292
3293    private void updateEditablity() {
3294        boolean canWrite =
3295                this.conversation.getMode() == Conversation.MODE_SINGLE
3296                        || this.conversation.getMucOptions().participating()
3297                        || this.conversation.getNextCounterpart() != null;
3298        this.binding.textinput.setFocusable(canWrite);
3299        this.binding.textinput.setFocusableInTouchMode(canWrite);
3300        this.binding.textSendButton.setEnabled(canWrite);
3301        this.binding.textinput.setCursorVisible(canWrite);
3302        this.binding.textinput.setEnabled(canWrite);
3303    }
3304
3305    public void updateSendButton() {
3306        boolean hasAttachments =
3307                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
3308        final Conversation c = this.conversation;
3309        final Presence.Status status;
3310        final String text =
3311                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
3312        final SendButtonAction action;
3313        if (hasAttachments) {
3314            action = SendButtonAction.TEXT;
3315        } else {
3316            action = SendButtonTool.getAction(getActivity(), c, text);
3317        }
3318        if (c.getAccount().getStatus() == Account.State.ONLINE) {
3319            if (activity != null
3320                    && activity.xmppConnectionService != null
3321                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
3322                status = Presence.Status.OFFLINE;
3323            } else if (c.getMode() == Conversation.MODE_SINGLE) {
3324                status = c.getContact().getShownStatus();
3325            } else {
3326                status =
3327                        c.getMucOptions().online()
3328                                ? Presence.Status.ONLINE
3329                                : Presence.Status.OFFLINE;
3330            }
3331        } else {
3332            status = Presence.Status.OFFLINE;
3333        }
3334        this.binding.textSendButton.setTag(action);
3335        final Activity activity = getActivity();
3336        if (activity != null) {
3337            this.binding.textSendButton.setImageResource(
3338                    SendButtonTool.getSendButtonImageResource(activity, action, status));
3339        }
3340
3341        ViewGroup.LayoutParams params = binding.threadIdenticonLayout.getLayoutParams();
3342        if (identiconWidth < 0) identiconWidth = params.width;
3343        if (hasAttachments || binding.textinput.getText().length() > 0) {
3344            binding.conversationViewPager.setCurrentItem(0);
3345            params.width = conversation.getThread() == null ? 0 : identiconWidth;
3346        } else {
3347            params.width = identiconWidth;
3348        }
3349        binding.threadIdenticonLayout.setLayoutParams(params);
3350    }
3351
3352    protected void updateStatusMessages() {
3353        DateSeparator.addAll(this.messageList);
3354        if (showLoadMoreMessages(conversation)) {
3355            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
3356        }
3357        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3358            ChatState state = conversation.getIncomingChatState();
3359            if (state == ChatState.COMPOSING) {
3360                this.messageList.add(
3361                        Message.createStatusMessage(
3362                                conversation,
3363                                getString(R.string.contact_is_typing, conversation.getName())));
3364            } else if (state == ChatState.PAUSED) {
3365                this.messageList.add(
3366                        Message.createStatusMessage(
3367                                conversation,
3368                                getString(
3369                                        R.string.contact_has_stopped_typing,
3370                                        conversation.getName())));
3371            } else {
3372                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3373                    final Message message = this.messageList.get(i);
3374                    if (message.getType() != Message.TYPE_STATUS) {
3375                        if (message.getStatus() == Message.STATUS_RECEIVED) {
3376                            return;
3377                        } else {
3378                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
3379                                this.messageList.add(
3380                                        i + 1,
3381                                        Message.createStatusMessage(
3382                                                conversation,
3383                                                getString(
3384                                                        R.string.contact_has_read_up_to_this_point,
3385                                                        conversation.getName())));
3386                                return;
3387                            }
3388                        }
3389                    }
3390                }
3391            }
3392        } else {
3393            final MucOptions mucOptions = conversation.getMucOptions();
3394            final List<MucOptions.User> allUsers = mucOptions.getUsers();
3395            final Set<ReadByMarker> addedMarkers = new HashSet<>();
3396            ChatState state = ChatState.COMPOSING;
3397            List<MucOptions.User> users =
3398                    conversation.getMucOptions().getUsersWithChatState(state, 5);
3399            if (users.size() == 0) {
3400                state = ChatState.PAUSED;
3401                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3402            }
3403            if (mucOptions.isPrivateAndNonAnonymous()) {
3404                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3405                    final Set<ReadByMarker> markersForMessage =
3406                            messageList.get(i).getReadByMarkers();
3407                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3408                    for (ReadByMarker marker : markersForMessage) {
3409                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3410                            addedMarkers.add(
3411                                    marker); // may be put outside this condition. set should do
3412                                             // dedup anyway
3413                            MucOptions.User user = mucOptions.findUser(marker);
3414                            if (user != null && !users.contains(user)) {
3415                                shownMarkers.add(user);
3416                            }
3417                        }
3418                    }
3419                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3420                    final Message statusMessage;
3421                    final int size = shownMarkers.size();
3422                    if (size > 1) {
3423                        final String body;
3424                        if (size <= 4) {
3425                            body =
3426                                    getString(
3427                                            R.string.contacts_have_read_up_to_this_point,
3428                                            UIHelper.concatNames(shownMarkers));
3429                        } else if (ReadByMarker.allUsersRepresented(
3430                                allUsers, markersForMessage, markerForSender)) {
3431                            body = getString(R.string.everyone_has_read_up_to_this_point);
3432                        } else {
3433                            body =
3434                                    getString(
3435                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3436                                            UIHelper.concatNames(shownMarkers, 3),
3437                                            size - 3);
3438                        }
3439                        statusMessage = Message.createStatusMessage(conversation, body);
3440                        statusMessage.setCounterparts(shownMarkers);
3441                    } else if (size == 1) {
3442                        statusMessage =
3443                                Message.createStatusMessage(
3444                                        conversation,
3445                                        getString(
3446                                                R.string.contact_has_read_up_to_this_point,
3447                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3448                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3449                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3450                    } else {
3451                        statusMessage = null;
3452                    }
3453                    if (statusMessage != null) {
3454                        this.messageList.add(i + 1, statusMessage);
3455                    }
3456                    addedMarkers.add(markerForSender);
3457                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3458                        break;
3459                    }
3460                }
3461            }
3462            if (users.size() > 0) {
3463                Message statusMessage;
3464                if (users.size() == 1) {
3465                    MucOptions.User user = users.get(0);
3466                    int id =
3467                            state == ChatState.COMPOSING
3468                                    ? R.string.contact_is_typing
3469                                    : R.string.contact_has_stopped_typing;
3470                    statusMessage =
3471                            Message.createStatusMessage(
3472                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3473                    statusMessage.setTrueCounterpart(user.getRealJid());
3474                    statusMessage.setCounterpart(user.getFullJid());
3475                } else {
3476                    int id =
3477                            state == ChatState.COMPOSING
3478                                    ? R.string.contacts_are_typing
3479                                    : R.string.contacts_have_stopped_typing;
3480                    statusMessage =
3481                            Message.createStatusMessage(
3482                                    conversation, getString(id, UIHelper.concatNames(users)));
3483                    statusMessage.setCounterparts(users);
3484                }
3485                this.messageList.add(statusMessage);
3486            }
3487        }
3488    }
3489
3490    private void stopScrolling() {
3491        long now = SystemClock.uptimeMillis();
3492        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3493        binding.messagesView.dispatchTouchEvent(cancel);
3494    }
3495
3496    private boolean showLoadMoreMessages(final Conversation c) {
3497        if (activity == null || activity.xmppConnectionService == null) {
3498            return false;
3499        }
3500        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3501        final MessageArchiveService service =
3502                activity.xmppConnectionService.getMessageArchiveService();
3503        return mam
3504                && (c.getLastClearHistory().getTimestamp() != 0
3505                        || (c.countMessages() == 0
3506                                && c.messagesLoaded.get()
3507                                && c.hasMessagesLeftOnServer()
3508                                && !service.queryInProgress(c)));
3509    }
3510
3511    private boolean hasMamSupport(final Conversation c) {
3512        if (c.getMode() == Conversation.MODE_SINGLE) {
3513            final XmppConnection connection = c.getAccount().getXmppConnection();
3514            return connection != null && connection.getFeatures().mam();
3515        } else {
3516            return c.getMucOptions().mamSupport();
3517        }
3518    }
3519
3520    protected void showSnackbar(
3521            final int message, final int action, final OnClickListener clickListener) {
3522        showSnackbar(message, action, clickListener, null);
3523    }
3524
3525    protected void showSnackbar(
3526            final int message,
3527            final int action,
3528            final OnClickListener clickListener,
3529            final View.OnLongClickListener longClickListener) {
3530        this.binding.snackbar.setVisibility(View.VISIBLE);
3531        this.binding.snackbar.setOnClickListener(null);
3532        this.binding.snackbarMessage.setText(message);
3533        this.binding.snackbarMessage.setOnClickListener(null);
3534        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3535        if (action != 0) {
3536            this.binding.snackbarAction.setText(action);
3537        }
3538        this.binding.snackbarAction.setOnClickListener(clickListener);
3539        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3540    }
3541
3542    protected void hideSnackbar() {
3543        this.binding.snackbar.setVisibility(View.GONE);
3544    }
3545
3546    protected void sendMessage(Message message) {
3547        activity.xmppConnectionService.sendMessage(message);
3548        messageSent();
3549    }
3550
3551    protected void sendPgpMessage(final Message message) {
3552        final XmppConnectionService xmppService = activity.xmppConnectionService;
3553        final Contact contact = message.getConversation().getContact();
3554        if (!activity.hasPgp()) {
3555            activity.showInstallPgpDialog();
3556            return;
3557        }
3558        if (conversation.getAccount().getPgpSignature() == null) {
3559            activity.announcePgp(
3560                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3561            return;
3562        }
3563        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3564            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3565        }
3566        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3567            if (contact.getPgpKeyId() != 0) {
3568                xmppService
3569                        .getPgpEngine()
3570                        .hasKey(
3571                                contact,
3572                                new UiCallback<Contact>() {
3573
3574                                    @Override
3575                                    public void userInputRequired(
3576                                            PendingIntent pi, Contact contact) {
3577                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3578                                    }
3579
3580                                    @Override
3581                                    public void success(Contact contact) {
3582                                        encryptTextMessage(message);
3583                                    }
3584
3585                                    @Override
3586                                    public void error(int error, Contact contact) {
3587                                        activity.runOnUiThread(
3588                                                () ->
3589                                                        Toast.makeText(
3590                                                                        activity,
3591                                                                        R.string
3592                                                                                .unable_to_connect_to_keychain,
3593                                                                        Toast.LENGTH_SHORT)
3594                                                                .show());
3595                                        mSendingPgpMessage.set(false);
3596                                    }
3597                                });
3598
3599            } else {
3600                showNoPGPKeyDialog(
3601                        false,
3602                        (dialog, which) -> {
3603                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3604                            xmppService.updateConversation(conversation);
3605                            message.setEncryption(Message.ENCRYPTION_NONE);
3606                            xmppService.sendMessage(message);
3607                            messageSent();
3608                        });
3609            }
3610        } else {
3611            if (conversation.getMucOptions().pgpKeysInUse()) {
3612                if (!conversation.getMucOptions().everybodyHasKeys()) {
3613                    Toast warning =
3614                            Toast.makeText(
3615                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3616                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3617                    warning.show();
3618                }
3619                encryptTextMessage(message);
3620            } else {
3621                showNoPGPKeyDialog(
3622                        true,
3623                        (dialog, which) -> {
3624                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3625                            message.setEncryption(Message.ENCRYPTION_NONE);
3626                            xmppService.updateConversation(conversation);
3627                            xmppService.sendMessage(message);
3628                            messageSent();
3629                        });
3630            }
3631        }
3632    }
3633
3634    public void encryptTextMessage(Message message) {
3635        activity.xmppConnectionService
3636                .getPgpEngine()
3637                .encrypt(
3638                        message,
3639                        new UiCallback<Message>() {
3640
3641                            @Override
3642                            public void userInputRequired(PendingIntent pi, Message message) {
3643                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3644                            }
3645
3646                            @Override
3647                            public void success(Message message) {
3648                                // TODO the following two call can be made before the callback
3649                                getActivity().runOnUiThread(() -> messageSent());
3650                            }
3651
3652                            @Override
3653                            public void error(final int error, Message message) {
3654                                getActivity()
3655                                        .runOnUiThread(
3656                                                () -> {
3657                                                    doneSendingPgpMessage();
3658                                                    Toast.makeText(
3659                                                                    getActivity(),
3660                                                                    error == 0
3661                                                                            ? R.string
3662                                                                                    .unable_to_connect_to_keychain
3663                                                                            : error,
3664                                                                    Toast.LENGTH_SHORT)
3665                                                            .show();
3666                                                });
3667                            }
3668                        });
3669    }
3670
3671    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
3672        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
3673        builder.setIconAttribute(android.R.attr.alertDialogIcon);
3674        if (plural) {
3675            builder.setTitle(getString(R.string.no_pgp_keys));
3676            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3677        } else {
3678            builder.setTitle(getString(R.string.no_pgp_key));
3679            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3680        }
3681        builder.setNegativeButton(getString(R.string.cancel), null);
3682        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3683        builder.create().show();
3684    }
3685
3686    public void appendText(String text, final boolean doNotAppend) {
3687        if (text == null) {
3688            return;
3689        }
3690        final Editable editable = this.binding.textinput.getText();
3691        String previous = editable == null ? "" : editable.toString();
3692        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3693            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3694                    .show();
3695            return;
3696        }
3697        if (UIHelper.isLastLineQuote(previous)) {
3698            text = '\n' + text;
3699        } else if (previous.length() != 0
3700                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3701            text = " " + text;
3702        }
3703        this.binding.textinput.append(text);
3704    }
3705
3706    @Override
3707    public boolean onEnterPressed(final boolean isCtrlPressed) {
3708        if (isCtrlPressed || enterIsSend()) {
3709            sendMessage();
3710            return true;
3711        }
3712        return false;
3713    }
3714
3715    private boolean enterIsSend() {
3716        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3717        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3718    }
3719
3720    public boolean onArrowUpCtrlPressed() {
3721        final Message lastEditableMessage =
3722                conversation == null ? null : conversation.getLastEditableMessage();
3723        if (lastEditableMessage != null) {
3724            correctMessage(lastEditableMessage);
3725            return true;
3726        } else {
3727            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3728                    .show();
3729            return false;
3730        }
3731    }
3732
3733    @Override
3734    public void onTypingStarted() {
3735        final XmppConnectionService service =
3736                activity == null ? null : activity.xmppConnectionService;
3737        if (service == null) {
3738            return;
3739        }
3740        final Account.State status = conversation.getAccount().getStatus();
3741        if (status == Account.State.ONLINE
3742                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3743            service.sendChatState(conversation);
3744        }
3745        runOnUiThread(this::updateSendButton);
3746    }
3747
3748    @Override
3749    public void onTypingStopped() {
3750        final XmppConnectionService service =
3751                activity == null ? null : activity.xmppConnectionService;
3752        if (service == null) {
3753            return;
3754        }
3755        final Account.State status = conversation.getAccount().getStatus();
3756        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3757            service.sendChatState(conversation);
3758        }
3759    }
3760
3761    @Override
3762    public void onTextDeleted() {
3763        final XmppConnectionService service =
3764                activity == null ? null : activity.xmppConnectionService;
3765        if (service == null) {
3766            return;
3767        }
3768        final Account.State status = conversation.getAccount().getStatus();
3769        if (status == Account.State.ONLINE
3770                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3771            service.sendChatState(conversation);
3772        }
3773        if (storeNextMessage()) {
3774            runOnUiThread(
3775                    () -> {
3776                        if (activity == null) {
3777                            return;
3778                        }
3779                        activity.onConversationsListItemUpdated();
3780                    });
3781        }
3782        runOnUiThread(this::updateSendButton);
3783    }
3784
3785    @Override
3786    public void onTextChanged() {
3787        if (conversation != null && conversation.getCorrectingMessage() != null) {
3788            runOnUiThread(this::updateSendButton);
3789        }
3790    }
3791
3792    @Override
3793    public boolean onTabPressed(boolean repeated) {
3794        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3795            return false;
3796        }
3797        if (repeated) {
3798            completionIndex++;
3799        } else {
3800            lastCompletionLength = 0;
3801            completionIndex = 0;
3802            final String content = this.binding.textinput.getText().toString();
3803            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3804            int start =
3805                    lastCompletionCursor > 0
3806                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3807                            : 0;
3808            firstWord = start == 0;
3809            incomplete = content.substring(start, lastCompletionCursor);
3810        }
3811        List<String> completions = new ArrayList<>();
3812        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3813            String name = user.getName();
3814            if (name != null && name.startsWith(incomplete)) {
3815                completions.add(name + (firstWord ? ": " : " "));
3816            }
3817        }
3818        Collections.sort(completions);
3819        if (completions.size() > completionIndex) {
3820            String completion = completions.get(completionIndex).substring(incomplete.length());
3821            this.binding
3822                    .textinput
3823                    .getEditableText()
3824                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3825            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3826            lastCompletionLength = completion.length();
3827        } else {
3828            completionIndex = -1;
3829            this.binding
3830                    .textinput
3831                    .getEditableText()
3832                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3833            lastCompletionLength = 0;
3834        }
3835        return true;
3836    }
3837
3838    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3839        try {
3840            getActivity()
3841                    .startIntentSenderForResult(
3842                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
3843        } catch (final SendIntentException ignored) {
3844        }
3845    }
3846
3847    @Override
3848    public void onBackendConnected() {
3849        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3850        String uuid = pendingConversationsUuid.pop();
3851        if (uuid != null) {
3852            if (!findAndReInitByUuidOrArchive(uuid)) {
3853                return;
3854            }
3855        } else {
3856            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3857                clearPending();
3858                activity.onConversationArchived(conversation);
3859                return;
3860            }
3861        }
3862        ActivityResult activityResult = postponedActivityResult.pop();
3863        if (activityResult != null) {
3864            handleActivityResult(activityResult);
3865        }
3866        clearPending();
3867    }
3868
3869    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3870        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3871        if (conversation == null) {
3872            clearPending();
3873            activity.onConversationArchived(null);
3874            return false;
3875        }
3876        reInit(conversation);
3877        ScrollState scrollState = pendingScrollState.pop();
3878        String lastMessageUuid = pendingLastMessageUuid.pop();
3879        List<Attachment> attachments = pendingMediaPreviews.pop();
3880        if (scrollState != null) {
3881            setScrollPosition(scrollState, lastMessageUuid);
3882        }
3883        if (attachments != null && attachments.size() > 0) {
3884            Log.d(Config.LOGTAG, "had attachments on restore");
3885            mediaPreviewAdapter.addMediaPreviews(attachments);
3886            toggleInputMethod();
3887        }
3888        return true;
3889    }
3890
3891    private void clearPending() {
3892        if (postponedActivityResult.clear()) {
3893            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3894            if (pendingTakePhotoUri.clear()) {
3895                Log.e(Config.LOGTAG, "cleared pending photo uri");
3896            }
3897        }
3898        if (pendingScrollState.clear()) {
3899            Log.e(Config.LOGTAG, "cleared scroll state");
3900        }
3901        if (pendingConversationsUuid.clear()) {
3902            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3903        }
3904        if (pendingMediaPreviews.clear()) {
3905            Log.e(Config.LOGTAG, "cleared pending media previews");
3906        }
3907    }
3908
3909    public Conversation getConversation() {
3910        return conversation;
3911    }
3912
3913    @Override
3914    public void onContactPictureLongClicked(View v, final Message message) {
3915        final String fingerprint;
3916        if (message.getEncryption() == Message.ENCRYPTION_PGP
3917                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3918            fingerprint = "pgp";
3919        } else {
3920            fingerprint = message.getFingerprint();
3921        }
3922        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3923        final Contact contact = message.getContact();
3924        if (message.getStatus() <= Message.STATUS_RECEIVED
3925                && (contact == null || !contact.isSelf())) {
3926            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3927                final Jid cp = message.getCounterpart();
3928                if (cp == null || cp.isBareJid()) {
3929                    return;
3930                }
3931                final Jid tcp = message.getTrueCounterpart();
3932                final User userByRealJid =
3933                        tcp != null
3934                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3935                                : null;
3936                final User user =
3937                        userByRealJid != null
3938                                ? userByRealJid
3939                                : conversation.getMucOptions().findUserByFullJid(cp);
3940                popupMenu.inflate(R.menu.muc_details_context);
3941                final Menu menu = popupMenu.getMenu();
3942                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3943                        activity, menu, conversation, user);
3944                popupMenu.setOnMenuItemClickListener(
3945                        menuItem ->
3946                                MucDetailsContextMenuHelper.onContextItemSelected(
3947                                        menuItem, user, activity, fingerprint));
3948            } else {
3949                popupMenu.inflate(R.menu.one_on_one_context);
3950                popupMenu.setOnMenuItemClickListener(
3951                        item -> {
3952                            switch (item.getItemId()) {
3953                                case R.id.action_contact_details:
3954                                    activity.switchToContactDetails(
3955                                            message.getContact(), fingerprint);
3956                                    break;
3957                                case R.id.action_show_qr_code:
3958                                    activity.showQrCode(
3959                                            "xmpp:"
3960                                                    + message.getContact()
3961                                                            .getJid()
3962                                                            .asBareJid()
3963                                                            .toEscapedString());
3964                                    break;
3965                            }
3966                            return true;
3967                        });
3968            }
3969        } else {
3970            popupMenu.inflate(R.menu.account_context);
3971            final Menu menu = popupMenu.getMenu();
3972            menu.findItem(R.id.action_manage_accounts)
3973                    .setVisible(QuickConversationsService.isConversations());
3974            popupMenu.setOnMenuItemClickListener(
3975                    item -> {
3976                        final XmppActivity activity = this.activity;
3977                        if (activity == null) {
3978                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3979                            return true;
3980                        }
3981                        switch (item.getItemId()) {
3982                            case R.id.action_show_qr_code:
3983                                activity.showQrCode(conversation.getAccount().getShareableUri());
3984                                break;
3985                            case R.id.action_account_details:
3986                                activity.switchToAccount(
3987                                        message.getConversation().getAccount(), fingerprint);
3988                                break;
3989                            case R.id.action_manage_accounts:
3990                                AccountUtils.launchManageAccounts(activity);
3991                                break;
3992                        }
3993                        return true;
3994                    });
3995        }
3996        popupMenu.show();
3997    }
3998
3999    @Override
4000    public void onContactPictureClicked(Message message) {
4001        setThread(message.getThread());
4002        conversation.setUserSelectedThread(true);
4003
4004        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
4005        if (received) {
4006            if (message.getConversation() instanceof Conversation
4007                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
4008                Jid tcp = message.getTrueCounterpart();
4009                Jid user = message.getCounterpart();
4010                if (user != null && !user.isBareJid()) {
4011                    final MucOptions mucOptions =
4012                            ((Conversation) message.getConversation()).getMucOptions();
4013                    if (mucOptions.participating()
4014                            || ((Conversation) message.getConversation()).getNextCounterpart()
4015                                    != null) {
4016                        if (!mucOptions.isUserInRoom(user)
4017                                && mucOptions.findUserByRealJid(
4018                                                tcp == null ? null : tcp.asBareJid())
4019                                        == null) {
4020                            Toast.makeText(
4021                                            getActivity(),
4022                                            activity.getString(
4023                                                    R.string.user_has_left_conference,
4024                                                    user.getResource()),
4025                                            Toast.LENGTH_SHORT)
4026                                    .show();
4027                        }
4028                        highlightInConference(user.getResource());
4029                    } else {
4030                        Toast.makeText(
4031                                        getActivity(),
4032                                        R.string.you_are_not_participating,
4033                                        Toast.LENGTH_SHORT)
4034                                .show();
4035                    }
4036                }
4037            }
4038        }
4039    }
4040
4041    private Activity requireActivity() {
4042        final Activity activity = getActivity();
4043        if (activity == null) {
4044            throw new IllegalStateException("Activity not attached");
4045        }
4046        return activity;
4047    }
4048}