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