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