ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
   4import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
   5import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
   6import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
   7import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
   8import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
   9
  10import android.Manifest;
  11import android.annotation.SuppressLint;
  12import android.app.Activity;
  13import android.app.Fragment;
  14import android.app.FragmentManager;
  15import android.app.PendingIntent;
  16import android.content.ActivityNotFoundException;
  17import android.content.Context;
  18import android.content.DialogInterface;
  19import android.content.Intent;
  20import android.content.IntentSender.SendIntentException;
  21import android.content.SharedPreferences;
  22import android.content.pm.PackageManager;
  23import android.net.Uri;
  24import android.os.Build;
  25import android.os.Bundle;
  26import android.os.Environment;
  27import android.os.Handler;
  28import android.os.storage.StorageManager;
  29import android.os.SystemClock;
  30import android.preference.PreferenceManager;
  31import android.provider.MediaStore;
  32import android.text.Editable;
  33import android.text.SpannableStringBuilder;
  34import android.text.TextUtils;
  35import android.util.Log;
  36import android.view.ContextMenu;
  37import android.view.ContextMenu.ContextMenuInfo;
  38import android.view.Gravity;
  39import android.view.LayoutInflater;
  40import android.view.Menu;
  41import android.view.MenuInflater;
  42import android.view.MenuItem;
  43import android.view.MotionEvent;
  44import android.view.View;
  45import android.view.View.OnClickListener;
  46import android.view.ViewGroup;
  47import android.view.inputmethod.EditorInfo;
  48import android.view.inputmethod.InputMethodManager;
  49import android.widget.AbsListView;
  50import android.widget.AbsListView.OnScrollListener;
  51import android.widget.AdapterView;
  52import android.widget.AdapterView.AdapterContextMenuInfo;
  53import android.widget.CheckBox;
  54import android.widget.ListView;
  55import android.widget.PopupMenu;
  56import android.widget.TextView.OnEditorActionListener;
  57import android.widget.Toast;
  58
  59import androidx.activity.OnBackPressedCallback;
  60import androidx.annotation.IdRes;
  61import androidx.annotation.NonNull;
  62import androidx.annotation.Nullable;
  63import androidx.annotation.StringRes;
  64import androidx.appcompat.app.AlertDialog;
  65import androidx.core.view.inputmethod.InputConnectionCompat;
  66import androidx.core.view.inputmethod.InputContentInfoCompat;
  67import androidx.databinding.DataBindingUtil;
  68import androidx.documentfile.provider.DocumentFile;
  69import androidx.viewpager.widget.PagerAdapter;
  70import androidx.viewpager.widget.ViewPager;
  71
  72import com.cheogram.android.BobTransfer;
  73
  74import com.google.common.base.Optional;
  75import com.google.common.collect.ImmutableList;
  76
  77import org.jetbrains.annotations.NotNull;
  78
  79import io.ipfs.cid.Cid;
  80
  81import java.io.File;
  82import java.net.URISyntaxException;
  83import java.util.ArrayList;
  84import java.util.Arrays;
  85import java.util.Collection;
  86import java.util.Collections;
  87import java.util.HashSet;
  88import java.util.Iterator;
  89import java.util.List;
  90import java.util.Map;
  91import java.util.Set;
  92import java.util.UUID;
  93import java.util.concurrent.atomic.AtomicBoolean;
  94
  95import eu.siacs.conversations.Config;
  96import eu.siacs.conversations.R;
  97import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  98import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  99import eu.siacs.conversations.databinding.FragmentConversationBinding;
 100import eu.siacs.conversations.entities.Account;
 101import eu.siacs.conversations.entities.Blockable;
 102import eu.siacs.conversations.entities.Contact;
 103import eu.siacs.conversations.entities.Conversation;
 104import eu.siacs.conversations.entities.Conversational;
 105import eu.siacs.conversations.entities.DownloadableFile;
 106import eu.siacs.conversations.entities.Message;
 107import eu.siacs.conversations.entities.MucOptions;
 108import eu.siacs.conversations.entities.MucOptions.User;
 109import eu.siacs.conversations.entities.Presence;
 110import eu.siacs.conversations.entities.Presences;
 111import eu.siacs.conversations.entities.ReadByMarker;
 112import eu.siacs.conversations.entities.Transferable;
 113import eu.siacs.conversations.entities.TransferablePlaceholder;
 114import eu.siacs.conversations.http.HttpDownloadConnection;
 115import eu.siacs.conversations.persistance.FileBackend;
 116import eu.siacs.conversations.services.MessageArchiveService;
 117import eu.siacs.conversations.services.QuickConversationsService;
 118import eu.siacs.conversations.services.XmppConnectionService;
 119import eu.siacs.conversations.ui.adapter.CommandAdapter;
 120import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
 121import eu.siacs.conversations.ui.adapter.MessageAdapter;
 122import eu.siacs.conversations.ui.util.ActivityResult;
 123import eu.siacs.conversations.ui.util.Attachment;
 124import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
 125import eu.siacs.conversations.ui.util.DateSeparator;
 126import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 127import eu.siacs.conversations.ui.util.ListViewUtils;
 128import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 129import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 130import eu.siacs.conversations.ui.util.PendingItem;
 131import eu.siacs.conversations.ui.util.PresenceSelector;
 132import eu.siacs.conversations.ui.util.ScrollState;
 133import eu.siacs.conversations.ui.util.SendButtonAction;
 134import eu.siacs.conversations.ui.util.SendButtonTool;
 135import eu.siacs.conversations.ui.util.ShareUtil;
 136import eu.siacs.conversations.ui.util.ViewUtil;
 137import eu.siacs.conversations.ui.widget.EditMessage;
 138import eu.siacs.conversations.utils.AccountUtils;
 139import eu.siacs.conversations.utils.Compatibility;
 140import eu.siacs.conversations.utils.Emoticons;
 141import eu.siacs.conversations.utils.GeoHelper;
 142import eu.siacs.conversations.utils.MessageUtils;
 143import eu.siacs.conversations.utils.MimeUtils;
 144import eu.siacs.conversations.utils.NickValidityChecker;
 145import eu.siacs.conversations.utils.Patterns;
 146import eu.siacs.conversations.utils.PermissionUtils;
 147import eu.siacs.conversations.utils.QuickLoader;
 148import eu.siacs.conversations.utils.StylingHelper;
 149import eu.siacs.conversations.utils.TimeFrameUtils;
 150import eu.siacs.conversations.utils.UIHelper;
 151import eu.siacs.conversations.xml.Element;
 152import eu.siacs.conversations.xml.Namespace;
 153import eu.siacs.conversations.xmpp.Jid;
 154import eu.siacs.conversations.xmpp.XmppConnection;
 155import eu.siacs.conversations.xmpp.chatstate.ChatState;
 156import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 157import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 158import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 159import eu.siacs.conversations.xmpp.jingle.Media;
 160import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 161import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 162import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 163
 164public class ConversationFragment extends XmppFragment
 165        implements EditMessage.KeyboardListener,
 166                MessageAdapter.OnContactPictureLongClicked,
 167                MessageAdapter.OnContactPictureClicked,
 168                MessageAdapter.OnInlineImageLongClicked {
 169
 170    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 171    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 172    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 173    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 174    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 175    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 176    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 177    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 178    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 179    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 180    public static final int REQUEST_SAVE_STICKER = 0x215;
 181    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 182    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 183    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 184    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 185    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 186    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 187    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 188
 189    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 190    public static final String STATE_CONVERSATION_UUID =
 191            ConversationFragment.class.getName() + ".uuid";
 192    public static final String STATE_SCROLL_POSITION =
 193            ConversationFragment.class.getName() + ".scroll_position";
 194    public static final String STATE_PHOTO_URI =
 195            ConversationFragment.class.getName() + ".media_previews";
 196    public static final String STATE_MEDIA_PREVIEWS =
 197            ConversationFragment.class.getName() + ".take_photo_uri";
 198    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 199
 200    private final List<Message> messageList = new ArrayList<>();
 201    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 202    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 203    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 204    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 205    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 206    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 207    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 208    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 209    public Uri mPendingEditorContent = null;
 210    protected MessageAdapter messageListAdapter;
 211    protected CommandAdapter commandAdapter;
 212    private MediaPreviewAdapter mediaPreviewAdapter;
 213    private String lastMessageUuid = null;
 214    private Conversation conversation;
 215    private FragmentConversationBinding binding;
 216    private Toast messageLoaderToast;
 217    private ConversationsActivity activity;
 218    private boolean reInitRequiredOnStart = true;
 219    private int identiconWidth = -1;
 220    private File savingAsSticker = null;
 221    private final OnClickListener clickToMuc =
 222            new OnClickListener() {
 223
 224                @Override
 225                public void onClick(View v) {
 226                    ConferenceDetailsActivity.open(getActivity(), conversation);
 227                }
 228            };
 229    private final OnClickListener leaveMuc =
 230            new OnClickListener() {
 231
 232                @Override
 233                public void onClick(View v) {
 234                    activity.xmppConnectionService.archiveConversation(conversation);
 235                }
 236            };
 237    private final OnClickListener joinMuc =
 238            new OnClickListener() {
 239
 240                @Override
 241                public void onClick(View v) {
 242                    activity.xmppConnectionService.joinMuc(conversation);
 243                }
 244            };
 245
 246    private final OnClickListener acceptJoin =
 247            new OnClickListener() {
 248                @Override
 249                public void onClick(View v) {
 250                    conversation.setAttribute("accept_non_anonymous", true);
 251                    activity.xmppConnectionService.updateConversation(conversation);
 252                    activity.xmppConnectionService.joinMuc(conversation);
 253                }
 254            };
 255
 256    private final OnClickListener enterPassword =
 257            new OnClickListener() {
 258
 259                @Override
 260                public void onClick(View v) {
 261                    MucOptions muc = conversation.getMucOptions();
 262                    String password = muc.getPassword();
 263                    if (password == null) {
 264                        password = "";
 265                    }
 266                    activity.quickPasswordEdit(
 267                            password,
 268                            value -> {
 269                                activity.xmppConnectionService.providePasswordForMuc(
 270                                        conversation, value);
 271                                return null;
 272                            });
 273                }
 274            };
 275    private final OnScrollListener mOnScrollListener =
 276            new OnScrollListener() {
 277
 278                @Override
 279                public void onScrollStateChanged(AbsListView view, int scrollState) {
 280                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 281                        updateThreadFromLastMessage();
 282                        fireReadEvent();
 283                    }
 284                }
 285
 286                @Override
 287                public void onScroll(
 288                        final AbsListView view,
 289                        int firstVisibleItem,
 290                        int visibleItemCount,
 291                        int totalItemCount) {
 292                    toggleScrollDownButton(view);
 293                    synchronized (ConversationFragment.this.messageList) {
 294                        if (firstVisibleItem < 5
 295                                && conversation != null
 296                                && conversation.messagesLoaded.compareAndSet(true, false)
 297                                && messageList.size() > 0) {
 298                            long timestamp = conversation.loadMoreTimestamp();
 299                            activity.xmppConnectionService.loadMoreMessages(
 300                                    conversation,
 301                                    timestamp,
 302                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 303                                        @Override
 304                                        public void onMoreMessagesLoaded(
 305                                                final int c, final Conversation conversation) {
 306                                            if (ConversationFragment.this.conversation
 307                                                    != conversation) {
 308                                                conversation.messagesLoaded.set(true);
 309                                                return;
 310                                            }
 311                                            runOnUiThread(
 312                                                    () -> {
 313                                                        synchronized (messageList) {
 314                                                            final int oldPosition =
 315                                                                    binding.messagesView
 316                                                                            .getFirstVisiblePosition();
 317                                                            Message message = null;
 318                                                            int childPos;
 319                                                            for (childPos = 0;
 320                                                                    childPos + oldPosition
 321                                                                            < messageList.size();
 322                                                                    ++childPos) {
 323                                                                message =
 324                                                                        messageList.get(
 325                                                                                oldPosition
 326                                                                                        + childPos);
 327                                                                if (message.getType()
 328                                                                        != Message.TYPE_STATUS) {
 329                                                                    break;
 330                                                                }
 331                                                            }
 332                                                            final String uuid =
 333                                                                    message != null
 334                                                                            ? message.getUuid()
 335                                                                            : null;
 336                                                            View v =
 337                                                                    binding.messagesView.getChildAt(
 338                                                                            childPos);
 339                                                            final int pxOffset =
 340                                                                    (v == null) ? 0 : v.getTop();
 341                                                            ConversationFragment.this.conversation
 342                                                                    .populateWithMessages(
 343                                                                            ConversationFragment
 344                                                                                    .this
 345                                                                                    .messageList);
 346                                                            try {
 347                                                                updateStatusMessages();
 348                                                            } catch (IllegalStateException e) {
 349                                                                Log.d(
 350                                                                        Config.LOGTAG,
 351                                                                        "caught illegal state exception while updating status messages");
 352                                                            }
 353                                                            messageListAdapter
 354                                                                    .notifyDataSetChanged();
 355                                                            int pos =
 356                                                                    Math.max(
 357                                                                            getIndexOf(
 358                                                                                    uuid,
 359                                                                                    messageList),
 360                                                                            0);
 361                                                            binding.messagesView
 362                                                                    .setSelectionFromTop(
 363                                                                            pos, pxOffset);
 364                                                            if (messageLoaderToast != null) {
 365                                                                messageLoaderToast.cancel();
 366                                                            }
 367                                                            conversation.messagesLoaded.set(true);
 368                                                        }
 369                                                    });
 370                                        }
 371
 372                                        @Override
 373                                        public void informUser(final int resId) {
 374
 375                                            runOnUiThread(
 376                                                    () -> {
 377                                                        if (messageLoaderToast != null) {
 378                                                            messageLoaderToast.cancel();
 379                                                        }
 380                                                        if (ConversationFragment.this.conversation
 381                                                                != conversation) {
 382                                                            return;
 383                                                        }
 384                                                        messageLoaderToast =
 385                                                                Toast.makeText(
 386                                                                        view.getContext(),
 387                                                                        resId,
 388                                                                        Toast.LENGTH_LONG);
 389                                                        messageLoaderToast.show();
 390                                                    });
 391                                        }
 392                                    });
 393                        }
 394                    }
 395                }
 396            };
 397    private final EditMessage.OnCommitContentListener mEditorContentListener =
 398            new EditMessage.OnCommitContentListener() {
 399                @Override
 400                public boolean onCommitContent(
 401                        InputContentInfoCompat inputContentInfo,
 402                        int flags,
 403                        Bundle opts,
 404                        String[] contentMimeTypes) {
 405                    // try to get permission to read the image, if applicable
 406                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 407                            != 0) {
 408                        try {
 409                            inputContentInfo.requestPermission();
 410                        } catch (Exception e) {
 411                            Log.e(
 412                                    Config.LOGTAG,
 413                                    "InputContentInfoCompat#requestPermission() failed.",
 414                                    e);
 415                            Toast.makeText(
 416                                            getActivity(),
 417                                            activity.getString(
 418                                                    R.string.no_permission_to_access_x,
 419                                                    inputContentInfo.getDescription()),
 420                                            Toast.LENGTH_LONG)
 421                                    .show();
 422                            return false;
 423                        }
 424                    }
 425                    if (hasPermissions(
 426                            REQUEST_ADD_EDITOR_CONTENT,
 427                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 428                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 429                    } else {
 430                        mPendingEditorContent = inputContentInfo.getContentUri();
 431                    }
 432                    return true;
 433                }
 434            };
 435    private Message selectedMessage;
 436    private final OnClickListener mEnableAccountListener =
 437            new OnClickListener() {
 438                @Override
 439                public void onClick(View v) {
 440                    final Account account = conversation == null ? null : conversation.getAccount();
 441                    if (account != null) {
 442                        account.setOption(Account.OPTION_DISABLED, false);
 443                        activity.xmppConnectionService.updateAccount(account);
 444                    }
 445                }
 446            };
 447    private final OnClickListener mUnblockClickListener =
 448            new OnClickListener() {
 449                @Override
 450                public void onClick(final View v) {
 451                    v.post(() -> v.setVisibility(View.INVISIBLE));
 452                    if (conversation.isDomainBlocked()) {
 453                        BlockContactDialog.show(activity, conversation);
 454                    } else {
 455                        unblockConversation(conversation);
 456                    }
 457                }
 458            };
 459    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 460    private final OnClickListener mAddBackClickListener =
 461            new OnClickListener() {
 462
 463                @Override
 464                public void onClick(View v) {
 465                    final Contact contact = conversation == null ? null : conversation.getContact();
 466                    if (contact != null) {
 467                        activity.xmppConnectionService.createContact(contact, true);
 468                        activity.switchToContactDetails(contact);
 469                    }
 470                }
 471            };
 472    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 473    private final OnClickListener mAllowPresenceSubscription =
 474            new OnClickListener() {
 475                @Override
 476                public void onClick(View v) {
 477                    final Contact contact = conversation == null ? null : conversation.getContact();
 478                    if (contact != null) {
 479                        activity.xmppConnectionService.sendPresencePacket(
 480                                contact.getAccount(),
 481                                activity.xmppConnectionService
 482                                        .getPresenceGenerator()
 483                                        .sendPresenceUpdatesTo(contact));
 484                        hideSnackbar();
 485                    }
 486                }
 487            };
 488    protected OnClickListener clickToDecryptListener =
 489            new OnClickListener() {
 490
 491                @Override
 492                public void onClick(View v) {
 493                    PendingIntent pendingIntent =
 494                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 495                    if (pendingIntent != null) {
 496                        try {
 497                            getActivity()
 498                                    .startIntentSenderForResult(
 499                                            pendingIntent.getIntentSender(),
 500                                            REQUEST_DECRYPT_PGP,
 501                                            null,
 502                                            0,
 503                                            0,
 504                                            0);
 505                        } catch (SendIntentException e) {
 506                            Toast.makeText(
 507                                            getActivity(),
 508                                            R.string.unable_to_connect_to_keychain,
 509                                            Toast.LENGTH_SHORT)
 510                                    .show();
 511                            conversation
 512                                    .getAccount()
 513                                    .getPgpDecryptionService()
 514                                    .continueDecryption(true);
 515                        }
 516                    }
 517                    updateSnackBar(conversation);
 518                }
 519            };
 520    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 521    private final OnEditorActionListener mEditorActionListener =
 522            (v, actionId, event) -> {
 523                if (actionId == EditorInfo.IME_ACTION_SEND) {
 524                    InputMethodManager imm =
 525                            (InputMethodManager)
 526                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 527                    if (imm != null && imm.isFullscreenMode()) {
 528                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 529                    }
 530                    sendMessage();
 531                    return true;
 532                } else {
 533                    return false;
 534                }
 535            };
 536    private final OnClickListener mScrollButtonListener =
 537            new OnClickListener() {
 538
 539                @Override
 540                public void onClick(View v) {
 541                    stopScrolling();
 542                    setSelection(binding.messagesView.getCount() - 1, true);
 543                }
 544            };
 545    private final OnClickListener mSendButtonListener =
 546            new OnClickListener() {
 547
 548                @Override
 549                public void onClick(View v) {
 550                    Object tag = v.getTag();
 551                    if (tag instanceof SendButtonAction) {
 552                        SendButtonAction action = (SendButtonAction) tag;
 553                        switch (action) {
 554                            case TAKE_PHOTO:
 555                            case RECORD_VIDEO:
 556                            case SEND_LOCATION:
 557                            case RECORD_VOICE:
 558                            case CHOOSE_PICTURE:
 559                                attachFile(action.toChoice());
 560                                break;
 561                            case CANCEL:
 562                                if (conversation != null) {
 563                                    if (conversation.setCorrectingMessage(null)) {
 564                                        binding.textinput.setText("");
 565                                        binding.textinput.append(conversation.getDraftMessage());
 566                                        conversation.setDraftMessage(null);
 567                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 568                                        conversation.setNextCounterpart(null);
 569                                        binding.textinput.setText("");
 570                                    } else {
 571                                        binding.textinput.setText("");
 572                                    }
 573                                    updateChatMsgHint();
 574                                    updateSendButton();
 575                                    updateEditablity();
 576                                }
 577                                break;
 578                            default:
 579                                sendMessage();
 580                        }
 581                    } else {
 582                        sendMessage();
 583                    }
 584                }
 585            };
 586    private OnBackPressedCallback backPressedLeaveSingleThread = new OnBackPressedCallback(false) {
 587        @Override
 588        public void handleOnBackPressed() {
 589            conversation.setLockThread(false);
 590            this.setEnabled(false);
 591            conversation.setUserSelectedThread(false);
 592            refresh();
 593            updateThreadFromLastMessage();
 594        }
 595    };
 596    private int completionIndex = 0;
 597    private int lastCompletionLength = 0;
 598    private String incomplete;
 599    private int lastCompletionCursor;
 600    private boolean firstWord = false;
 601    private Message mPendingDownloadableMessage;
 602
 603    private static ConversationFragment findConversationFragment(Activity activity) {
 604        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 605        if (fragment instanceof ConversationFragment) {
 606            return (ConversationFragment) fragment;
 607        }
 608        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 609        if (fragment instanceof ConversationFragment) {
 610            return (ConversationFragment) fragment;
 611        }
 612        return null;
 613    }
 614
 615    public static void startStopPending(Activity activity) {
 616        ConversationFragment fragment = findConversationFragment(activity);
 617        if (fragment != null) {
 618            fragment.messageListAdapter.startStopPending();
 619        }
 620    }
 621
 622    public static void downloadFile(Activity activity, Message message) {
 623        ConversationFragment fragment = findConversationFragment(activity);
 624        if (fragment != null) {
 625            fragment.startDownloadable(message);
 626        }
 627    }
 628
 629    public static void registerPendingMessage(Activity activity, Message message) {
 630        ConversationFragment fragment = findConversationFragment(activity);
 631        if (fragment != null) {
 632            fragment.pendingMessage.push(message);
 633        }
 634    }
 635
 636    public static void openPendingMessage(Activity activity) {
 637        ConversationFragment fragment = findConversationFragment(activity);
 638        if (fragment != null) {
 639            Message message = fragment.pendingMessage.pop();
 640            if (message != null) {
 641                fragment.messageListAdapter.openDownloadable(message);
 642            }
 643        }
 644    }
 645
 646    public static Conversation getConversation(Activity activity) {
 647        return getConversation(activity, R.id.secondary_fragment);
 648    }
 649
 650    private static Conversation getConversation(Activity activity, @IdRes int res) {
 651        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 652        if (fragment instanceof ConversationFragment) {
 653            return ((ConversationFragment) fragment).getConversation();
 654        } else {
 655            return null;
 656        }
 657    }
 658
 659    public static ConversationFragment get(Activity activity) {
 660        FragmentManager fragmentManager = activity.getFragmentManager();
 661        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 662        if (fragment instanceof ConversationFragment) {
 663            return (ConversationFragment) fragment;
 664        } else {
 665            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 666            return fragment instanceof ConversationFragment
 667                    ? (ConversationFragment) fragment
 668                    : null;
 669        }
 670    }
 671
 672    public static Conversation getConversationReliable(Activity activity) {
 673        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 674        if (conversation != null) {
 675            return conversation;
 676        }
 677        return getConversation(activity, R.id.main_fragment);
 678    }
 679
 680    private static boolean scrolledToBottom(AbsListView listView) {
 681        final int count = listView.getCount();
 682        if (count == 0) {
 683            return true;
 684        } else if (listView.getLastVisiblePosition() == count - 1) {
 685            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 686            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 687        } else {
 688            return false;
 689        }
 690    }
 691
 692    private void toggleScrollDownButton() {
 693        toggleScrollDownButton(binding.messagesView);
 694    }
 695
 696    private void toggleScrollDownButton(AbsListView listView) {
 697        if (conversation == null) {
 698            return;
 699        }
 700        if (scrolledToBottom(listView)) {
 701            lastMessageUuid = null;
 702            hideUnreadMessagesCount();
 703        } else {
 704            binding.scrollToBottomButton.setEnabled(true);
 705            binding.scrollToBottomButton.show();
 706            if (lastMessageUuid == null) {
 707                lastMessageUuid = conversation.getLatestMessage().getUuid();
 708            }
 709            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 710                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 711            }
 712        }
 713    }
 714
 715    private int getIndexOf(String uuid, List<Message> messages) {
 716        if (uuid == null) {
 717            return messages.size() - 1;
 718        }
 719        for (int i = 0; i < messages.size(); ++i) {
 720            if (uuid.equals(messages.get(i).getUuid())) {
 721                return i;
 722            } else {
 723                Message next = messages.get(i);
 724                while (next != null && next.wasMergedIntoPrevious()) {
 725                    if (uuid.equals(next.getUuid())) {
 726                        return i;
 727                    }
 728                    next = next.next();
 729                }
 730            }
 731        }
 732        return -1;
 733    }
 734
 735    private ScrollState getScrollPosition() {
 736        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 737        if (listView == null
 738                || listView.getCount() == 0
 739                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 740            return null;
 741        } else {
 742            final int pos = listView.getFirstVisiblePosition();
 743            final View view = listView.getChildAt(0);
 744            if (view == null) {
 745                return null;
 746            } else {
 747                return new ScrollState(pos, view.getTop());
 748            }
 749        }
 750    }
 751
 752    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 753        if (scrollPosition != null) {
 754
 755            this.lastMessageUuid = lastMessageUuid;
 756            if (lastMessageUuid != null) {
 757                binding.unreadCountCustomView.setUnreadCount(
 758                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 759            }
 760            // TODO maybe this needs a 'post'
 761            this.binding.messagesView.setSelectionFromTop(
 762                    scrollPosition.position, scrollPosition.offset);
 763            toggleScrollDownButton();
 764        }
 765    }
 766
 767    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 768        if (conversation == null) {
 769            return;
 770        }
 771        activity.xmppConnectionService.attachLocationToConversation(
 772                conversation,
 773                uri,
 774                new UiCallback<Message>() {
 775
 776                    @Override
 777                    public void success(Message message) {}
 778
 779                    @Override
 780                    public void error(int errorCode, Message object) {
 781                        // TODO show possible pgp error
 782                    }
 783
 784                    @Override
 785                    public void userInputRequired(PendingIntent pi, Message object) {}
 786                });
 787    }
 788
 789    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 790        if (conversation == null) {
 791            return;
 792        }
 793        final Toast prepareFileToast =
 794                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 795        prepareFileToast.show();
 796        activity.delegateUriPermissionsToService(uri);
 797        activity.xmppConnectionService.attachFileToConversation(
 798                conversation,
 799                uri,
 800                type,
 801                new UiInformableCallback<Message>() {
 802                    @Override
 803                    public void inform(final String text) {
 804                        hidePrepareFileToast(prepareFileToast);
 805                        runOnUiThread(() -> activity.replaceToast(text));
 806                    }
 807
 808                    @Override
 809                    public void success(Message message) {
 810                        runOnUiThread(() -> activity.hideToast());
 811                        hidePrepareFileToast(prepareFileToast);
 812                    }
 813
 814                    @Override
 815                    public void error(final int errorCode, Message message) {
 816                        hidePrepareFileToast(prepareFileToast);
 817                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 818                    }
 819
 820                    @Override
 821                    public void userInputRequired(PendingIntent pi, Message message) {
 822                        hidePrepareFileToast(prepareFileToast);
 823                    }
 824                });
 825    }
 826
 827    public void attachEditorContentToConversation(Uri uri) {
 828        mediaPreviewAdapter.addMediaPreviews(
 829                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 830        toggleInputMethod();
 831    }
 832
 833    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 834        if (conversation == null) {
 835            return;
 836        }
 837        final Toast prepareFileToast =
 838                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 839        prepareFileToast.show();
 840        activity.delegateUriPermissionsToService(uri);
 841        activity.xmppConnectionService.attachImageToConversation(
 842                conversation,
 843                uri,
 844                type,
 845                new UiCallback<Message>() {
 846
 847                    @Override
 848                    public void userInputRequired(PendingIntent pi, Message object) {
 849                        hidePrepareFileToast(prepareFileToast);
 850                    }
 851
 852                    @Override
 853                    public void success(Message message) {
 854                        hidePrepareFileToast(prepareFileToast);
 855                    }
 856
 857                    @Override
 858                    public void error(final int error, final Message message) {
 859                        hidePrepareFileToast(prepareFileToast);
 860                        final ConversationsActivity activity = ConversationFragment.this.activity;
 861                        if (activity == null) {
 862                            return;
 863                        }
 864                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 865                    }
 866                });
 867    }
 868
 869    private void hidePrepareFileToast(final Toast prepareFileToast) {
 870        if (prepareFileToast != null && activity != null) {
 871            activity.runOnUiThread(prepareFileToast::cancel);
 872        }
 873    }
 874
 875    private void sendMessage() {
 876        conversation.setUserSelectedThread(false);
 877        if (mediaPreviewAdapter.hasAttachments()) {
 878            commitAttachments();
 879            return;
 880        }
 881        final Editable text = this.binding.textinput.getText();
 882        final String body = text == null ? "" : text.toString();
 883        final Conversation conversation = this.conversation;
 884        if (body.length() == 0 || conversation == null) {
 885            return;
 886        }
 887        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 888            return;
 889        }
 890        final Message message;
 891        if (conversation.getCorrectingMessage() == null) {
 892            if (conversation.getReplyTo() != null) {
 893                if (Emoticons.isEmoji(body)) {
 894                    message = conversation.getReplyTo().react(body);
 895                } else {
 896                    message = conversation.getReplyTo().reply();
 897                    message.appendBody(body);
 898                }
 899                message.setEncryption(conversation.getNextEncryption());
 900            } else {
 901                message = new Message(conversation, body, conversation.getNextEncryption());
 902            }
 903            message.setThread(conversation.getThread());
 904            Message.configurePrivateMessage(message);
 905        } else {
 906            message = conversation.getCorrectingMessage();
 907            message.setBody(body);
 908            message.putEdited(message.getUuid(), message.getServerMsgId());
 909            message.setServerMsgId(null);
 910            message.setUuid(UUID.randomUUID().toString());
 911        }
 912        switch (conversation.getNextEncryption()) {
 913            case Message.ENCRYPTION_PGP:
 914                sendPgpMessage(message);
 915                break;
 916            default:
 917                sendMessage(message);
 918        }
 919        setupReply(null);
 920    }
 921
 922    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 923        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 924                && trustKeysIfNeeded(requestCode);
 925    }
 926
 927    protected boolean trustKeysIfNeeded(int requestCode) {
 928        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 929        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 930        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 931        boolean hasUndecidedOwn =
 932                !axolotlService
 933                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 934                        .isEmpty();
 935        boolean hasUndecidedContacts =
 936                !axolotlService
 937                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 938                        .isEmpty();
 939        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 940        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 941        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 942        if (hasUndecidedOwn
 943                || hasUndecidedContacts
 944                || hasPendingKeys
 945                || hasNoTrustedKeys
 946                || hasUnaccepted
 947                || downloadInProgress) {
 948            axolotlService.createSessionsIfNeeded(conversation);
 949            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 950            String[] contacts = new String[targets.size()];
 951            for (int i = 0; i < contacts.length; ++i) {
 952                contacts[i] = targets.get(i).toString();
 953            }
 954            intent.putExtra("contacts", contacts);
 955            intent.putExtra(
 956                    EXTRA_ACCOUNT,
 957                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 958            intent.putExtra("conversation", conversation.getUuid());
 959            startActivityForResult(intent, requestCode);
 960            return true;
 961        } else {
 962            return false;
 963        }
 964    }
 965
 966    public void updateChatMsgHint() {
 967        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 968        if (conversation.getCorrectingMessage() != null) {
 969            this.binding.textInputHint.setVisibility(View.GONE);
 970            this.binding.textinput.setHint(R.string.send_corrected_message);
 971            binding.conversationViewPager.setCurrentItem(0);
 972        } else if (multi && conversation.getNextCounterpart() != null) {
 973            this.binding.textinput.setHint(R.string.send_message);
 974            this.binding.textInputHint.setVisibility(View.VISIBLE);
 975            this.binding.textInputHint.setText(
 976                    getString(
 977                            R.string.send_private_message_to,
 978                            conversation.getNextCounterpart().getResource()));
 979            binding.conversationViewPager.setCurrentItem(0);
 980        } else if (multi && !conversation.getMucOptions().participating()) {
 981            this.binding.textInputHint.setVisibility(View.GONE);
 982            this.binding.textinput.setHint(R.string.you_are_not_participating);
 983        } else {
 984            this.binding.textInputHint.setVisibility(View.GONE);
 985            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 986            getActivity().invalidateOptionsMenu();
 987        }
 988
 989        binding.messagesView.post(this::updateThreadFromLastMessage);
 990    }
 991
 992    public void setupIme() {
 993        this.binding.textinput.refreshIme();
 994    }
 995
 996    private void handleActivityResult(ActivityResult activityResult) {
 997        if (activityResult.resultCode == Activity.RESULT_OK) {
 998            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 999        } else {
1000            handleNegativeActivityResult(activityResult.requestCode);
1001        }
1002    }
1003
1004    private void handlePositiveActivityResult(int requestCode, final Intent data) {
1005        switch (requestCode) {
1006            case REQUEST_SAVE_STICKER:
1007                final DocumentFile df = DocumentFile.fromSingleUri(activity, data.getData());
1008                final File f = savingAsSticker;
1009                savingAsSticker = null;
1010                try {
1011                    activity.xmppConnectionService.getFileBackend().copyFileToDocumentFile(activity, f, df);
1012                    Toast.makeText(activity, "Sticker saved", Toast.LENGTH_SHORT).show();
1013                } catch (final FileBackend.FileCopyException e) {
1014                    Toast.makeText(activity, e.getResId(), Toast.LENGTH_SHORT).show();
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        setupReply(null);
1129    }
1130
1131    private static boolean anyNeedsExternalStoragePermission(
1132            final Collection<Attachment> attachments) {
1133        for (final Attachment attachment : attachments) {
1134            if (attachment.getType() != Attachment.Type.LOCATION) {
1135                return true;
1136            }
1137        }
1138        return false;
1139    }
1140
1141    public void toggleInputMethod() {
1142        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1143        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1144        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1145        updateSendButton();
1146    }
1147
1148    private void handleNegativeActivityResult(int requestCode) {
1149        switch (requestCode) {
1150            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1151                if (pendingTakePhotoUri.clear()) {
1152                    Log.d(
1153                            Config.LOGTAG,
1154                            "cleared pending photo uri after negative activity result");
1155                }
1156                break;
1157        }
1158    }
1159
1160    @Override
1161    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1162        super.onActivityResult(requestCode, resultCode, data);
1163        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1164        if (activity != null && activity.xmppConnectionService != null) {
1165            handleActivityResult(activityResult);
1166        } else {
1167            this.postponedActivityResult.push(activityResult);
1168        }
1169    }
1170
1171    public void unblockConversation(final Blockable conversation) {
1172        activity.xmppConnectionService.sendUnblockRequest(conversation);
1173    }
1174
1175    @Override
1176    public void onAttach(Activity activity) {
1177        super.onAttach(activity);
1178        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1179        if (activity instanceof ConversationsActivity) {
1180            this.activity = (ConversationsActivity) activity;
1181        } else {
1182            throw new IllegalStateException(
1183                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1184        }
1185    }
1186
1187    @Override
1188    public void onDetach() {
1189        super.onDetach();
1190        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1191    }
1192
1193    @Override
1194    public void onCreate(Bundle savedInstanceState) {
1195        super.onCreate(savedInstanceState);
1196        setHasOptionsMenu(true);
1197        activity.getOnBackPressedDispatcher().addCallback(backPressedLeaveSingleThread);
1198    }
1199
1200    @Override
1201    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1202        menuInflater.inflate(R.menu.fragment_conversation, menu);
1203        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1204        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1205        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1206        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1207        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1208        final MenuItem menuCall = menu.findItem(R.id.action_call);
1209        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1210        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1211        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1212
1213        if (conversation != null) {
1214            if (conversation.getMode() == Conversation.MODE_MULTI) {
1215                menuContactDetails.setVisible(false);
1216                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1217                menuMucDetails.setTitle(
1218                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1219                                ? R.string.action_muc_details
1220                                : R.string.channel_details);
1221                menuCall.setVisible(false);
1222                menuOngoingCall.setVisible(false);
1223            } else {
1224                final XmppConnectionService service =
1225                        activity == null ? null : activity.xmppConnectionService;
1226                final Optional<OngoingRtpSession> ongoingRtpSession =
1227                        service == null
1228                                ? Optional.absent()
1229                                : service.getJingleConnectionManager()
1230                                        .getOngoingRtpConnection(conversation.getContact());
1231                if (ongoingRtpSession.isPresent()) {
1232                    menuOngoingCall.setVisible(true);
1233                    menuCall.setVisible(false);
1234                } else {
1235                    menuOngoingCall.setVisible(false);
1236                    final RtpCapability.Capability rtpCapability =
1237                            RtpCapability.check(conversation.getContact());
1238                    final boolean cameraAvailable =
1239                            activity != null && activity.isCameraFeatureAvailable();
1240                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1241                    menuVideoCall.setVisible(
1242                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1243                }
1244                menuContactDetails.setVisible(!this.conversation.withSelf());
1245                menuMucDetails.setVisible(false);
1246                menuInviteContact.setVisible(
1247                        service != null
1248                                && service.findConferenceServer(conversation.getAccount()) != null);
1249            }
1250            if (conversation.isMuted()) {
1251                menuMute.setVisible(false);
1252            } else {
1253                menuUnmute.setVisible(false);
1254            }
1255            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1256            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1257            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1258                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1259            } else {
1260                menuTogglePinned.setTitle(R.string.add_to_favorites);
1261            }
1262        }
1263        super.onCreateOptionsMenu(menu, menuInflater);
1264    }
1265
1266    @Override
1267    public View onCreateView(
1268            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1269        this.binding =
1270                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1271        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1272
1273        binding.textinput.addTextChangedListener(
1274                new StylingHelper.MessageEditorStyler(binding.textinput));
1275
1276        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1277        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1278
1279        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1280        binding.contextPreviewCancel.setOnClickListener((v) -> {
1281            conversation.setUserSelectedThread(false);
1282            setupReply(null);
1283        });
1284
1285        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1286        binding.messagesView.setOnScrollListener(mOnScrollListener);
1287        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1288        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1289        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1290        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1291        messageListAdapter.setOnContactPictureClicked(this);
1292        messageListAdapter.setOnContactPictureLongClicked(this);
1293        messageListAdapter.setOnInlineImageLongClicked(this);
1294        binding.messagesView.setAdapter(messageListAdapter);
1295
1296        registerForContextMenu(binding.messagesView);
1297
1298        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1299            this.binding.textinput.setCustomInsertionActionModeCallback(
1300                    new EditMessageActionModeCallback(this.binding.textinput));
1301        }
1302
1303        messageListAdapter.setOnMessageBoxClicked(message -> {
1304            setThread(message.getThread());
1305            conversation.setUserSelectedThread(true);
1306        });
1307
1308        messageListAdapter.setOnMessageBoxSwiped(message -> {
1309            quoteMessage(message);
1310        });
1311
1312        binding.threadIdenticonLayout.setOnClickListener(v -> {
1313            boolean wasLocked = conversation.getLockThread();
1314            conversation.setLockThread(false);
1315            backPressedLeaveSingleThread.setEnabled(false);
1316            if (wasLocked) {
1317                conversation.setUserSelectedThread(false);
1318                refresh();
1319                updateThreadFromLastMessage();
1320            } else {
1321                newThread();
1322                conversation.setUserSelectedThread(true);
1323                newThreadTutorialToast("Switched to new thread");
1324            }
1325        });
1326
1327        binding.threadIdenticonLayout.setOnLongClickListener(v -> {
1328            boolean wasLocked = conversation.getLockThread();
1329            conversation.setLockThread(false);
1330            backPressedLeaveSingleThread.setEnabled(false);
1331            setThread(null);
1332            conversation.setUserSelectedThread(true);
1333            if (wasLocked) refresh();
1334            newThreadTutorialToast("Cleared thread");
1335            return true;
1336        });
1337
1338        return binding.getRoot();
1339    }
1340
1341    protected void newThreadTutorialToast(String s) {
1342        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
1343        final int tutorialCount = p.getInt("thread_tutorial", 0);
1344        if (tutorialCount < 5) {
1345            Toast.makeText(activity, s, Toast.LENGTH_SHORT).show();
1346            p.edit().putInt("thread_tutorial", tutorialCount + 1).apply();
1347        }
1348    }
1349
1350    @Override
1351    public void onDestroyView() {
1352        super.onDestroyView();
1353        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1354        messageListAdapter.setOnContactPictureClicked(null);
1355        messageListAdapter.setOnContactPictureLongClicked(null);
1356        messageListAdapter.setOnInlineImageLongClicked(null);
1357        if (conversation != null) conversation.setupViewPager(null, null);
1358    }
1359
1360    private void quoteText(String text) {
1361        if (binding.textinput.isEnabled()) {
1362            binding.textinput.insertAsQuote(text);
1363            binding.textinput.requestFocus();
1364            InputMethodManager inputMethodManager =
1365                    (InputMethodManager)
1366                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1367            if (inputMethodManager != null) {
1368                inputMethodManager.showSoftInput(
1369                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1370            }
1371        }
1372    }
1373
1374    private void quoteMessage(Message message) {
1375        setThread(message.getThread());
1376        conversation.setUserSelectedThread(true);
1377        if (message.getThread() == null) newThread();
1378        setupReply(message);
1379    }
1380
1381    private void setupReply(Message message) {
1382        conversation.setReplyTo(message);
1383        if (message == null) {
1384            binding.contextPreview.setVisibility(View.GONE);
1385            return;
1386        }
1387
1388        SpannableStringBuilder body = message.getSpannableBody(null, null);
1389        if (message.isFileOrImage() || message.isOOb()) body.append(" 🖼️");
1390        messageListAdapter.handleTextQuotes(body, activity.isDarkTheme());
1391        binding.contextPreviewText.setText(body);
1392        binding.contextPreview.setVisibility(View.VISIBLE);
1393    }
1394
1395    private void setThread(Element thread) {
1396        this.conversation.setThread(thread);
1397        binding.threadIdenticon.setAlpha(0f);
1398        binding.threadIdenticonLock.setVisibility(this.conversation.getLockThread() ? View.VISIBLE : View.GONE);
1399        if (thread != null) {
1400            final String threadId = thread.getContent();
1401            if (threadId != null) {
1402                binding.threadIdenticon.setAlpha(1f);
1403                binding.threadIdenticon.setColor(UIHelper.getColorForName(threadId));
1404                binding.threadIdenticon.setHash(UIHelper.identiconHash(threadId));
1405            }
1406        }
1407        updateSendButton();
1408    }
1409
1410    @Override
1411    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1412        // This should cancel any remaining click events that would otherwise trigger links
1413        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1414        synchronized (this.messageList) {
1415            super.onCreateContextMenu(menu, v, menuInfo);
1416            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1417            this.selectedMessage = this.messageList.get(acmi.position);
1418            populateContextMenu(menu);
1419        }
1420    }
1421
1422    private void populateContextMenu(ContextMenu menu) {
1423        final Message m = this.selectedMessage;
1424        final Transferable t = m.getTransferable();
1425        Message relevantForCorrection = m;
1426        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1427            relevantForCorrection = relevantForCorrection.next();
1428        }
1429        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1430
1431            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1432                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1433                return;
1434            }
1435
1436            if (m.getStatus() == Message.STATUS_RECEIVED
1437                    && t != null
1438                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1439                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1440                return;
1441            }
1442
1443            final boolean deleted = m.isDeleted();
1444            final boolean encrypted =
1445                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1446                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1447            final boolean receiving =
1448                    m.getStatus() == Message.STATUS_RECEIVED
1449                            && (t instanceof JingleFileTransferConnection
1450                                    || t instanceof HttpDownloadConnection);
1451            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1452            MenuItem openWith = menu.findItem(R.id.open_with);
1453            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1454            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1455            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1456            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1457            MenuItem retractMessage = menu.findItem(R.id.retract_message);
1458            MenuItem moderateMessage = menu.findItem(R.id.moderate_message);
1459            MenuItem onlyThisThread = menu.findItem(R.id.only_this_thread);
1460            MenuItem shareWith = menu.findItem(R.id.share_with);
1461            MenuItem sendAgain = menu.findItem(R.id.send_again);
1462            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1463            MenuItem saveAsSticker = menu.findItem(R.id.save_as_sticker);
1464            MenuItem downloadFile = menu.findItem(R.id.download_file);
1465            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1466            MenuItem blockMedia = menu.findItem(R.id.block_media);
1467            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1468            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1469            onlyThisThread.setVisible(!conversation.getLockThread() && m.getThread() != null);
1470            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1471            final boolean showError =
1472                    m.getStatus() == Message.STATUS_SEND_FAILED
1473                            && m.getErrorMessage() != null
1474                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1475            if (!encrypted && !m.getBody().equals("")) {
1476                copyMessage.setVisible(true);
1477            }
1478            quoteMessage.setVisible(!encrypted && !showError);
1479            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1480                retryDecryption.setVisible(true);
1481            }
1482            if (!showError
1483                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1484                    && !m.isGeoUri()
1485                    && relevantForCorrection.isLastCorrectableMessage()
1486                    && m.getConversation() instanceof Conversation) {
1487                correctMessage.setVisible(true);
1488                if (!relevantForCorrection.getBody().equals("") && !relevantForCorrection.getBody().equals(" ")) retractMessage.setVisible(true);
1489            }
1490            if (relevantForCorrection.getReactions() != null) {
1491                correctMessage.setVisible(false);
1492                retractMessage.setVisible(true);
1493            }
1494            if (conversation.getMode() == Conversation.MODE_MULTI && m.getServerMsgId() != null && m.getModerated() == null && conversation.getMucOptions().getSelf().getRole().ranks(MucOptions.Role.MODERATOR) && conversation.getMucOptions().hasFeature("urn:xmpp:message-moderate:0")) {
1495                moderateMessage.setVisible(true);
1496            }
1497            if ((m.isFileOrImage() && !deleted && !receiving)
1498                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1499                            && !unInitiatedButKnownSize
1500                            && t == null) {
1501                shareWith.setVisible(true);
1502            }
1503            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1504                sendAgain.setVisible(true);
1505            }
1506            if (m.hasFileOnRemoteHost()
1507                    || m.isGeoUri()
1508                    || m.treatAsDownloadable()
1509                    || unInitiatedButKnownSize
1510                    || t instanceof HttpDownloadConnection) {
1511                copyUrl.setVisible(true);
1512            }
1513            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1514                downloadFile.setVisible(true);
1515                downloadFile.setTitle(
1516                        activity.getString(
1517                                R.string.download_x_file,
1518                                UIHelper.getFileDescriptionString(activity, m)));
1519            }
1520            final boolean waitingOfferedSending =
1521                    m.getStatus() == Message.STATUS_WAITING
1522                            || m.getStatus() == Message.STATUS_UNSEND
1523                            || m.getStatus() == Message.STATUS_OFFERED;
1524            final boolean cancelable =
1525                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1526            if (cancelable) {
1527                cancelTransmission.setVisible(true);
1528            }
1529            if (m.isFileOrImage() && !deleted && !cancelable) {
1530                final String path = m.getRelativeFilePath();
1531                if (path == null
1532                        || !path.startsWith("/")
1533                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1534                    saveAsSticker.setVisible(true);
1535                    blockMedia.setVisible(true);
1536                    deleteFile.setVisible(true);
1537                    deleteFile.setTitle(
1538                            activity.getString(
1539                                    R.string.delete_x_file,
1540                                    UIHelper.getFileDescriptionString(activity, m)));
1541                }
1542            }
1543
1544            if (m.getFileParams() != null && !m.getFileParams().getThumbnails().isEmpty()) {
1545                // We might be showing a thumbnail worth blocking
1546                blockMedia.setVisible(true);
1547            }
1548            if (showError) {
1549                showErrorMessage.setVisible(true);
1550            }
1551            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1552            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1553                    || (mime != null && mime.startsWith("audio/"))) {
1554                openWith.setVisible(true);
1555            }
1556        }
1557    }
1558
1559    @Override
1560    public boolean onContextItemSelected(MenuItem item) {
1561        switch (item.getItemId()) {
1562            case R.id.share_with:
1563                ShareUtil.share(activity, selectedMessage);
1564                return true;
1565            case R.id.correct_message:
1566                correctMessage(selectedMessage);
1567                return true;
1568            case R.id.retract_message:
1569                new AlertDialog.Builder(activity)
1570                    .setTitle(R.string.retract_message)
1571                    .setMessage("Do you really want to retract this message?")
1572                    .setPositiveButton(R.string.yes, (dialog, whichButton) -> {
1573                        Message message = selectedMessage;
1574                        while (message.mergeable(message.next())) {
1575                            message = message.next();
1576                        }
1577                        Element reactions = message.getReactions();
1578                        if (reactions != null) {
1579                            final Message previousReaction = conversation.findMessageReactingTo(reactions.getAttribute("id"), null);
1580                            if (previousReaction != null) reactions = previousReaction.getReactions();
1581                            for (Element el : reactions.getChildren()) {
1582                                if (message.getQuoteableBody().endsWith(el.getContent())) {
1583                                    reactions.removeChild(el);
1584                                }
1585                            }
1586                            message.setReactions(reactions);
1587                            if (previousReaction != null) {
1588                                previousReaction.setReactions(reactions);
1589                                activity.xmppConnectionService.updateMessage(previousReaction);
1590                            }
1591                        }
1592                        message.setBody(" ");
1593                        message.putEdited(message.getUuid(), message.getServerMsgId());
1594                        message.setServerMsgId(null);
1595                        message.setUuid(UUID.randomUUID().toString());
1596                        sendMessage(message);
1597                    })
1598                    .setNegativeButton(R.string.no, null).show();
1599                return true;
1600            case R.id.moderate_message:
1601                activity.quickEdit("Spam", (reason) -> {
1602                    activity.xmppConnectionService.moderateMessage(conversation.getAccount(), selectedMessage, reason);
1603                    return null;
1604                }, R.string.moderate_reason, false, false, true);
1605                return true;
1606            case R.id.copy_message:
1607                ShareUtil.copyToClipboard(activity, selectedMessage);
1608                return true;
1609            case R.id.quote_message:
1610                quoteMessage(selectedMessage);
1611                return true;
1612            case R.id.send_again:
1613                resendMessage(selectedMessage);
1614                return true;
1615            case R.id.copy_url:
1616                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1617                return true;
1618            case R.id.save_as_sticker:
1619                saveAsSticker(selectedMessage);
1620                return true;
1621            case R.id.download_file:
1622                startDownloadable(selectedMessage);
1623                return true;
1624            case R.id.cancel_transmission:
1625                cancelTransmission(selectedMessage);
1626                return true;
1627            case R.id.retry_decryption:
1628                retryDecryption(selectedMessage);
1629                return true;
1630            case R.id.block_media:
1631                new AlertDialog.Builder(activity)
1632                    .setTitle(R.string.block_media)
1633                    .setMessage("Do you really want to block this media in all messages?")
1634                    .setPositiveButton(R.string.yes, (dialog, whichButton) -> {
1635                        List<Element> thumbs = selectedMessage.getFileParams() != null ? selectedMessage.getFileParams().getThumbnails() : null;
1636                        if (thumbs != null && !thumbs.isEmpty()) {
1637                            for (Element thumb : thumbs) {
1638                                Uri uri = Uri.parse(thumb.getAttribute("uri"));
1639                                if (uri.getScheme().equals("cid")) {
1640                                    Cid cid = BobTransfer.cid(uri);
1641                                    if (cid == null) continue;
1642                                    DownloadableFile f = activity.xmppConnectionService.getFileForCid(cid);
1643                                    activity.xmppConnectionService.blockMedia(f);
1644                                    activity.xmppConnectionService.evictPreview(f);
1645                                    f.delete();
1646                                }
1647                            }
1648                        }
1649                        File f = activity.xmppConnectionService.getFileBackend().getFile(selectedMessage);
1650                        activity.xmppConnectionService.blockMedia(f);
1651                        activity.xmppConnectionService.getFileBackend().deleteFile(selectedMessage);
1652                        selectedMessage.setDeleted(true);
1653                        activity.xmppConnectionService.evictPreview(f);
1654                        activity.xmppConnectionService.updateMessage(selectedMessage, false);
1655                        activity.onConversationsListItemUpdated();
1656                        refresh();
1657                    })
1658                    .setNegativeButton(R.string.no, null).show();
1659                return true;
1660            case R.id.delete_file:
1661                deleteFile(selectedMessage);
1662                return true;
1663            case R.id.show_error_message:
1664                showErrorMessage(selectedMessage);
1665                return true;
1666            case R.id.open_with:
1667                openWith(selectedMessage);
1668                return true;
1669            case R.id.only_this_thread:
1670                conversation.setLockThread(true);
1671                backPressedLeaveSingleThread.setEnabled(true);
1672                setThread(selectedMessage.getThread());
1673                refresh();
1674                return true;
1675            default:
1676                return super.onContextItemSelected(item);
1677        }
1678    }
1679
1680    @Override
1681    public boolean onOptionsItemSelected(final MenuItem item) {
1682        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1683            return false;
1684        } else if (conversation == null) {
1685            return super.onOptionsItemSelected(item);
1686        }
1687        switch (item.getItemId()) {
1688            case R.id.encryption_choice_axolotl:
1689            case R.id.encryption_choice_pgp:
1690            case R.id.encryption_choice_none:
1691                handleEncryptionSelection(item);
1692                break;
1693            case R.id.attach_choose_picture:
1694            case R.id.attach_take_picture:
1695            case R.id.attach_record_video:
1696            case R.id.attach_choose_file:
1697            case R.id.attach_record_voice:
1698            case R.id.attach_location:
1699                handleAttachmentSelection(item);
1700                break;
1701            case R.id.action_search:
1702                startSearch();
1703                break;
1704            case R.id.action_archive:
1705                activity.xmppConnectionService.archiveConversation(conversation);
1706                break;
1707            case R.id.action_contact_details:
1708                activity.switchToContactDetails(conversation.getContact());
1709                break;
1710            case R.id.action_muc_details:
1711                ConferenceDetailsActivity.open(activity, conversation);
1712                break;
1713            case R.id.action_invite:
1714                startActivityForResult(
1715                        ChooseContactActivity.create(activity, conversation),
1716                        REQUEST_INVITE_TO_CONVERSATION);
1717                break;
1718            case R.id.action_clear_history:
1719                clearHistoryDialog(conversation);
1720                break;
1721            case R.id.action_mute:
1722                muteConversationDialog(conversation);
1723                break;
1724            case R.id.action_unmute:
1725                unMuteConversation(conversation);
1726                break;
1727            case R.id.action_block:
1728            case R.id.action_unblock:
1729                final Activity activity = getActivity();
1730                if (activity instanceof XmppActivity) {
1731                    BlockContactDialog.show((XmppActivity) activity, conversation);
1732                }
1733                break;
1734            case R.id.action_audio_call:
1735                checkPermissionAndTriggerAudioCall();
1736                break;
1737            case R.id.action_video_call:
1738                checkPermissionAndTriggerVideoCall();
1739                break;
1740            case R.id.action_ongoing_call:
1741                returnToOngoingCall();
1742                break;
1743            case R.id.action_toggle_pinned:
1744                togglePinned();
1745                break;
1746            case R.id.action_refresh_feature_discovery:
1747                refreshFeatureDiscovery();
1748                break;
1749            default:
1750                break;
1751        }
1752        return super.onOptionsItemSelected(item);
1753    }
1754
1755    public boolean onBackPressed() {
1756        boolean wasLocked = conversation.getLockThread();
1757        conversation.setLockThread(false);
1758        backPressedLeaveSingleThread.setEnabled(false);
1759        if (wasLocked) {
1760            conversation.setUserSelectedThread(false);
1761            refresh();
1762            updateThreadFromLastMessage();
1763            return true;
1764        }
1765        return false;
1766    }
1767
1768    private void startSearch() {
1769        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1770        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1771        startActivity(intent);
1772    }
1773
1774    private void returnToOngoingCall() {
1775        final Optional<OngoingRtpSession> ongoingRtpSession =
1776                activity.xmppConnectionService
1777                        .getJingleConnectionManager()
1778                        .getOngoingRtpConnection(conversation.getContact());
1779        if (ongoingRtpSession.isPresent()) {
1780            final OngoingRtpSession id = ongoingRtpSession.get();
1781            final Intent intent = new Intent(activity, RtpSessionActivity.class);
1782            intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, id.getAccount().getJid().asBareJid().toEscapedString());
1783            intent.putExtra(
1784                    RtpSessionActivity.EXTRA_ACCOUNT,
1785                    id.getAccount().getJid().asBareJid().toEscapedString());
1786            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1787            if (id instanceof AbstractJingleConnection.Id) {
1788                intent.setAction(Intent.ACTION_VIEW);
1789                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1790            } else if (id instanceof JingleConnectionManager.RtpSessionProposal) {
1791                if (((JingleConnectionManager.RtpSessionProposal) id).media.contains(Media.VIDEO)) {
1792                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1793                } else {
1794                    intent.setAction(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1795                }
1796            }
1797            activity.startActivity(intent);
1798        }
1799    }
1800
1801    private void refreshFeatureDiscovery() {
1802        for (Map.Entry<String, Presence> entry : conversation.getContact().getPresences().getPresencesMap().entrySet()) {
1803            Jid jid = conversation.getContact().getJid();
1804            if (!entry.getKey().equals("")) jid = jid.withResource(entry.getKey());
1805            activity.xmppConnectionService.fetchCaps(conversation.getAccount(), jid, entry.getValue(), () -> {
1806                if (activity == null) return;
1807                activity.runOnUiThread(() -> {
1808                    refresh();
1809                    refreshCommands();
1810                });
1811            });
1812        }
1813    }
1814
1815    private void togglePinned() {
1816        final boolean pinned =
1817                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1818        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1819        activity.xmppConnectionService.updateConversation(conversation);
1820        activity.invalidateOptionsMenu();
1821    }
1822
1823    private void checkPermissionAndTriggerAudioCall() {
1824        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1825            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1826            return;
1827        }
1828        final List<String> permissions;
1829        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1830            permissions =
1831                    Arrays.asList(
1832                            Manifest.permission.RECORD_AUDIO,
1833                            Manifest.permission.BLUETOOTH_CONNECT);
1834        } else {
1835            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1836        }
1837        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1838            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1839        }
1840    }
1841
1842    private void checkPermissionAndTriggerVideoCall() {
1843        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1844            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1845            return;
1846        }
1847        final List<String> permissions;
1848        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1849            permissions =
1850                    Arrays.asList(
1851                            Manifest.permission.RECORD_AUDIO,
1852                            Manifest.permission.CAMERA,
1853                            Manifest.permission.BLUETOOTH_CONNECT);
1854        } else {
1855            permissions =
1856                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1857        }
1858        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1859            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1860        }
1861    }
1862
1863    private void triggerRtpSession(final String action) {
1864        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy() != null) {
1865            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1866                    .show();
1867            return;
1868        }
1869        final Contact contact = conversation.getContact();
1870        if (contact.getPresences().anySupport(Namespace.JINGLE_MESSAGE)) {
1871            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1872        } else {
1873            final RtpCapability.Capability capability;
1874            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1875                capability = RtpCapability.Capability.VIDEO;
1876            } else {
1877                capability = RtpCapability.Capability.AUDIO;
1878            }
1879            PresenceSelector.selectFullJidForDirectRtpConnection(
1880                    activity,
1881                    contact,
1882                    capability,
1883                    fullJid -> {
1884                        triggerRtpSession(contact.getAccount(), fullJid, action);
1885                    });
1886        }
1887    }
1888
1889    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1890        final Intent intent = new Intent(activity, RtpSessionActivity.class);
1891        intent.setAction(action);
1892        intent.putExtra(RtpSessionActivity.EXTRA_ACCOUNT, account.getJid().toEscapedString());
1893        intent.putExtra(RtpSessionActivity.EXTRA_WITH, with.toEscapedString());
1894        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
1895        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
1896        startActivity(intent);
1897    }
1898
1899    private void handleAttachmentSelection(MenuItem item) {
1900        switch (item.getItemId()) {
1901            case R.id.attach_choose_picture:
1902                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1903                break;
1904            case R.id.attach_take_picture:
1905                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1906                break;
1907            case R.id.attach_record_video:
1908                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1909                break;
1910            case R.id.attach_choose_file:
1911                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1912                break;
1913            case R.id.attach_record_voice:
1914                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1915                break;
1916            case R.id.attach_location:
1917                attachFile(ATTACHMENT_CHOICE_LOCATION);
1918                break;
1919        }
1920    }
1921
1922    private void handleEncryptionSelection(MenuItem item) {
1923        if (conversation == null) {
1924            return;
1925        }
1926        final boolean updated;
1927        switch (item.getItemId()) {
1928            case R.id.encryption_choice_none:
1929                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1930                item.setChecked(true);
1931                break;
1932            case R.id.encryption_choice_pgp:
1933                if (activity.hasPgp()) {
1934                    if (conversation.getAccount().getPgpSignature() != null) {
1935                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1936                        item.setChecked(true);
1937                    } else {
1938                        updated = false;
1939                        activity.announcePgp(
1940                                conversation.getAccount(),
1941                                conversation,
1942                                null,
1943                                activity.onOpenPGPKeyPublished);
1944                    }
1945                } else {
1946                    activity.showInstallPgpDialog();
1947                    updated = false;
1948                }
1949                break;
1950            case R.id.encryption_choice_axolotl:
1951                Log.d(
1952                        Config.LOGTAG,
1953                        AxolotlService.getLogprefix(conversation.getAccount())
1954                                + "Enabled axolotl for Contact "
1955                                + conversation.getContact().getJid());
1956                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1957                item.setChecked(true);
1958                break;
1959            default:
1960                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1961                break;
1962        }
1963        if (updated) {
1964            activity.xmppConnectionService.updateConversation(conversation);
1965        }
1966        updateChatMsgHint();
1967        getActivity().invalidateOptionsMenu();
1968        activity.refreshUi();
1969    }
1970
1971    public void attachFile(final int attachmentChoice) {
1972        attachFile(attachmentChoice, true);
1973    }
1974
1975    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1976        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1977            if (!hasPermissions(
1978                    attachmentChoice,
1979                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1980                    Manifest.permission.RECORD_AUDIO)) {
1981                return;
1982            }
1983        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1984                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1985            if (!hasPermissions(
1986                    attachmentChoice,
1987                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1988                    Manifest.permission.CAMERA)) {
1989                return;
1990            }
1991        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1992            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1993                return;
1994            }
1995        }
1996        if (updateRecentlyUsed) {
1997            storeRecentlyUsedQuickAction(attachmentChoice);
1998        }
1999        final int encryption = conversation.getNextEncryption();
2000        final int mode = conversation.getMode();
2001        if (encryption == Message.ENCRYPTION_PGP) {
2002            if (activity.hasPgp()) {
2003                if (mode == Conversation.MODE_SINGLE
2004                        && conversation.getContact().getPgpKeyId() != 0) {
2005                    activity.xmppConnectionService
2006                            .getPgpEngine()
2007                            .hasKey(
2008                                    conversation.getContact(),
2009                                    new UiCallback<Contact>() {
2010
2011                                        @Override
2012                                        public void userInputRequired(
2013                                                PendingIntent pi, Contact contact) {
2014                                            startPendingIntent(pi, attachmentChoice);
2015                                        }
2016
2017                                        @Override
2018                                        public void success(Contact contact) {
2019                                            invokeAttachFileIntent(attachmentChoice);
2020                                        }
2021
2022                                        @Override
2023                                        public void error(int error, Contact contact) {
2024                                            activity.replaceToast(getString(error));
2025                                        }
2026                                    });
2027                } else if (mode == Conversation.MODE_MULTI
2028                        && conversation.getMucOptions().pgpKeysInUse()) {
2029                    if (!conversation.getMucOptions().everybodyHasKeys()) {
2030                        Toast warning =
2031                                Toast.makeText(
2032                                        getActivity(),
2033                                        R.string.missing_public_keys,
2034                                        Toast.LENGTH_LONG);
2035                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
2036                        warning.show();
2037                    }
2038                    invokeAttachFileIntent(attachmentChoice);
2039                } else {
2040                    showNoPGPKeyDialog(
2041                            false,
2042                            (dialog, which) -> {
2043                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
2044                                activity.xmppConnectionService.updateConversation(conversation);
2045                                invokeAttachFileIntent(attachmentChoice);
2046                            });
2047                }
2048            } else {
2049                activity.showInstallPgpDialog();
2050            }
2051        } else {
2052            invokeAttachFileIntent(attachmentChoice);
2053        }
2054    }
2055
2056    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
2057        try {
2058            activity.getPreferences()
2059                    .edit()
2060                    .putString(
2061                            RECENTLY_USED_QUICK_ACTION,
2062                            SendButtonAction.of(attachmentChoice).toString())
2063                    .apply();
2064        } catch (IllegalArgumentException e) {
2065            // just do not save
2066        }
2067    }
2068
2069    @Override
2070    public void onRequestPermissionsResult(
2071            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
2072        final PermissionUtils.PermissionResult permissionResult =
2073                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
2074        if (grantResults.length > 0) {
2075            if (allGranted(permissionResult.grantResults)) {
2076                switch (requestCode) {
2077                    case REQUEST_START_DOWNLOAD:
2078                        if (this.mPendingDownloadableMessage != null) {
2079                            startDownloadable(this.mPendingDownloadableMessage);
2080                        }
2081                        break;
2082                    case REQUEST_ADD_EDITOR_CONTENT:
2083                        if (this.mPendingEditorContent != null) {
2084                            attachEditorContentToConversation(this.mPendingEditorContent);
2085                        }
2086                        break;
2087                    case REQUEST_COMMIT_ATTACHMENTS:
2088                        commitAttachments();
2089                        break;
2090                    case REQUEST_START_AUDIO_CALL:
2091                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
2092                        break;
2093                    case REQUEST_START_VIDEO_CALL:
2094                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
2095                        break;
2096                    default:
2097                        attachFile(requestCode);
2098                        break;
2099                }
2100            } else {
2101                @StringRes int res;
2102                String firstDenied =
2103                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
2104                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
2105                    res = R.string.no_microphone_permission;
2106                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
2107                    res = R.string.no_camera_permission;
2108                } else {
2109                    res = R.string.no_storage_permission;
2110                }
2111                Toast.makeText(
2112                                getActivity(),
2113                                getString(res, getString(R.string.app_name)),
2114                                Toast.LENGTH_SHORT)
2115                        .show();
2116            }
2117        }
2118        if (writeGranted(grantResults, permissions)) {
2119            if (activity != null && activity.xmppConnectionService != null) {
2120                activity.xmppConnectionService.getBitmapCache().evictAll();
2121                activity.xmppConnectionService.getDrawableCache().evictAll();
2122                activity.xmppConnectionService.restartFileObserver();
2123            }
2124            refresh();
2125        }
2126    }
2127
2128    public void startDownloadable(Message message) {
2129        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2130            this.mPendingDownloadableMessage = message;
2131            return;
2132        }
2133        Transferable transferable = message.getTransferable();
2134        if (transferable != null) {
2135            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
2136                createNewConnection(message);
2137                return;
2138            }
2139            if (!transferable.start()) {
2140                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
2141                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2142                        .show();
2143            }
2144        } else if (message.treatAsDownloadable()
2145                || message.hasFileOnRemoteHost()
2146                || MessageUtils.unInitiatedButKnownSize(message)) {
2147            createNewConnection(message);
2148        } else {
2149            Log.d(
2150                    Config.LOGTAG,
2151                    message.getConversation().getAccount() + ": unable to start downloadable");
2152        }
2153    }
2154
2155    private void createNewConnection(final Message message) {
2156        if (!activity.xmppConnectionService.hasInternetConnection()) {
2157            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
2158                    .show();
2159            return;
2160        }
2161        if (message.getOob() != null && message.getOob().getScheme().equalsIgnoreCase("cid")) {
2162            try {
2163                BobTransfer transfer = new BobTransfer.ForMessage(message, activity.xmppConnectionService);
2164                message.setTransferable(transfer);
2165                transfer.start();
2166            } catch (URISyntaxException e) {
2167                Log.d(Config.LOGTAG, "BobTransfer failed to parse URI");
2168            }
2169        } else {
2170            activity.xmppConnectionService
2171                    .getHttpConnectionManager()
2172                    .createNewDownloadConnection(message, true);
2173        }
2174    }
2175
2176    @SuppressLint("InflateParams")
2177    protected void clearHistoryDialog(final Conversation conversation) {
2178        final AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2179        builder.setTitle(getString(R.string.clear_conversation_history));
2180        final View dialogView =
2181                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
2182        final CheckBox endConversationCheckBox =
2183                dialogView.findViewById(R.id.end_conversation_checkbox);
2184        builder.setView(dialogView);
2185        builder.setNegativeButton(getString(R.string.cancel), null);
2186        builder.setPositiveButton(
2187                getString(R.string.confirm),
2188                (dialog, which) -> {
2189                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
2190                    if (endConversationCheckBox.isChecked()) {
2191                        this.activity.xmppConnectionService.archiveConversation(conversation);
2192                        this.activity.onConversationArchived(conversation);
2193                    } else {
2194                        activity.onConversationsListItemUpdated();
2195                        refresh();
2196                    }
2197                });
2198        builder.create().show();
2199    }
2200
2201    protected void muteConversationDialog(final Conversation conversation) {
2202        final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
2203        builder.setTitle(R.string.disable_notifications);
2204        final int[] durations = activity.getResources().getIntArray(R.array.mute_options_durations);
2205        final CharSequence[] labels = new CharSequence[durations.length];
2206        for (int i = 0; i < durations.length; ++i) {
2207            if (durations[i] == -1) {
2208                labels[i] = activity.getString(R.string.until_further_notice);
2209            } else {
2210                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
2211            }
2212        }
2213        builder.setItems(
2214                labels,
2215                (dialog, which) -> {
2216                    final long till;
2217                    if (durations[which] == -1) {
2218                        till = Long.MAX_VALUE;
2219                    } else {
2220                        till = System.currentTimeMillis() + (durations[which] * 1000L);
2221                    }
2222                    conversation.setMutedTill(till);
2223                    activity.xmppConnectionService.updateConversation(conversation);
2224                    activity.onConversationsListItemUpdated();
2225                    refresh();
2226                    activity.invalidateOptionsMenu();
2227                });
2228        builder.create().show();
2229    }
2230
2231    private boolean hasPermissions(int requestCode, List<String> permissions) {
2232        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
2233            final List<String> missingPermissions = new ArrayList<>();
2234            for (String permission : permissions) {
2235                if (Config.ONLY_INTERNAL_STORAGE
2236                        && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
2237                    continue;
2238                }
2239                if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
2240                    missingPermissions.add(permission);
2241                }
2242            }
2243            if (missingPermissions.size() == 0) {
2244                return true;
2245            } else {
2246                requestPermissions(
2247                        missingPermissions.toArray(new String[0]),
2248                        requestCode);
2249                return false;
2250            }
2251        } else {
2252            return true;
2253        }
2254    }
2255
2256    private boolean hasPermissions(int requestCode, String... permissions) {
2257        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2258    }
2259
2260    public void unMuteConversation(final Conversation conversation) {
2261        conversation.setMutedTill(0);
2262        this.activity.xmppConnectionService.updateConversation(conversation);
2263        this.activity.onConversationsListItemUpdated();
2264        refresh();
2265        this.activity.invalidateOptionsMenu();
2266    }
2267
2268    protected void invokeAttachFileIntent(final int attachmentChoice) {
2269        Intent intent = new Intent();
2270        boolean chooser = false;
2271        switch (attachmentChoice) {
2272            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2273                intent.setAction(Intent.ACTION_GET_CONTENT);
2274                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2275                intent.setType("image/*");
2276                chooser = true;
2277                break;
2278            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2279                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2280                break;
2281            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2282                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2283                pendingTakePhotoUri.push(uri);
2284                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2285                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2286                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2287                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2288                break;
2289            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2290                chooser = true;
2291                intent.setType("*/*");
2292                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2293                intent.addCategory(Intent.CATEGORY_OPENABLE);
2294                intent.setAction(Intent.ACTION_GET_CONTENT);
2295                break;
2296            case ATTACHMENT_CHOICE_RECORD_VOICE:
2297                intent = new Intent(getActivity(), RecordingActivity.class);
2298                break;
2299            case ATTACHMENT_CHOICE_LOCATION:
2300                intent = GeoHelper.getFetchIntent(activity);
2301                break;
2302        }
2303        final Context context = getActivity();
2304        if (context == null) {
2305            return;
2306        }
2307        try {
2308            if (chooser) {
2309                startActivityForResult(
2310                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2311                        attachmentChoice);
2312            } else {
2313                startActivityForResult(intent, attachmentChoice);
2314            }
2315        } catch (final ActivityNotFoundException e) {
2316            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2317        }
2318    }
2319
2320    @Override
2321    public void onResume() {
2322        super.onResume();
2323        binding.messagesView.post(this::fireReadEvent);
2324    }
2325
2326    private void fireReadEvent() {
2327        if (activity != null && this.conversation != null) {
2328            String uuid = getLastVisibleMessageUuid();
2329            if (uuid != null) {
2330                activity.onConversationRead(this.conversation, uuid);
2331            }
2332        }
2333    }
2334
2335    private void newThread() {
2336        Element thread = new Element("thread", "jabber:client");
2337        thread.setContent(UUID.randomUUID().toString());
2338        setThread(thread);
2339    }
2340
2341    private void updateThreadFromLastMessage() {
2342        if (this.conversation != null && !this.conversation.getUserSelectedThread() && TextUtils.isEmpty(binding.textinput.getText())) {
2343            Message message = getLastVisibleMessage();
2344            if (message == null) {
2345                newThread();
2346            } else {
2347                setThread(message.getThread());
2348            }
2349        }
2350    }
2351
2352    private String getLastVisibleMessageUuid() {
2353        Message message =  getLastVisibleMessage();
2354        return message == null ? null : message.getUuid();
2355    }
2356
2357    private Message getLastVisibleMessage() {
2358        if (binding == null) {
2359            return null;
2360        }
2361        synchronized (this.messageList) {
2362            int pos = binding.messagesView.getLastVisiblePosition();
2363            if (pos >= 0) {
2364                Message message = null;
2365                for (int i = pos; i >= 0; --i) {
2366                    try {
2367                        message = (Message) binding.messagesView.getItemAtPosition(i);
2368                    } catch (IndexOutOfBoundsException e) {
2369                        // should not happen if we synchronize properly. however if that fails we
2370                        // just gonna try item -1
2371                        continue;
2372                    }
2373                    if (message.getType() != Message.TYPE_STATUS) {
2374                        break;
2375                    }
2376                }
2377                if (message != null) {
2378                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2379                        message = message.next();
2380                    }
2381                    return message;
2382                }
2383            }
2384        }
2385        return null;
2386    }
2387
2388    private void openWith(final Message message) {
2389        if (message.isGeoUri()) {
2390            GeoHelper.view(getActivity(), message);
2391        } else {
2392            final DownloadableFile file =
2393                    activity.xmppConnectionService.getFileBackend().getFile(message);
2394            ViewUtil.view(activity, file);
2395        }
2396    }
2397
2398    private void showErrorMessage(final Message message) {
2399        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2400        builder.setTitle(R.string.error_message);
2401        final String errorMessage = message.getErrorMessage();
2402        final String[] errorMessageParts =
2403                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2404        final String displayError;
2405        if (errorMessageParts.length == 2) {
2406            displayError = errorMessageParts[1];
2407        } else {
2408            displayError = errorMessage;
2409        }
2410        builder.setMessage(displayError);
2411        builder.setNegativeButton(
2412                R.string.copy_to_clipboard,
2413                (dialog, which) -> {
2414                    activity.copyTextToClipboard(displayError, R.string.error_message);
2415                    Toast.makeText(
2416                                    activity,
2417                                    R.string.error_message_copied_to_clipboard,
2418                                    Toast.LENGTH_SHORT)
2419                            .show();
2420                });
2421        builder.setPositiveButton(R.string.confirm, null);
2422        builder.create().show();
2423    }
2424
2425    public boolean onInlineImageLongClicked(Cid cid) {
2426        DownloadableFile f = activity.xmppConnectionService.getFileForCid(cid);
2427        if (f == null) return false;
2428
2429        saveAsSticker(f, null);
2430        return true;
2431    }
2432
2433    private void saveAsSticker(final Message m) {
2434        String existingName = m.getFileParams() != null && m.getFileParams().getName() != null ? m.getFileParams().getName() : "";
2435        existingName = existingName.lastIndexOf(".") == -1 ? existingName : existingName.substring(0, existingName.lastIndexOf("."));
2436        saveAsSticker(activity.xmppConnectionService.getFileBackend().getFile(m), existingName);
2437    }
2438
2439    private void saveAsSticker(final File file, final String name) {
2440        savingAsSticker = file;
2441
2442        Intent intent = new Intent(Intent.ACTION_CREATE_DOCUMENT);
2443        intent.addCategory(Intent.CATEGORY_OPENABLE);
2444        intent.setType(MimeUtils.guessMimeTypeFromUri(activity, activity.xmppConnectionService.getFileBackend().getUriForFile(activity, file)));
2445        intent.putExtra(Intent.EXTRA_TITLE, name);
2446
2447        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2448        final String dir = p.getString("sticker_directory", "Stickers");
2449        if (dir.startsWith("content://")) {
2450            intent.putExtra("android.provider.extra.INITIAL_URI", Uri.parse(dir));
2451        } else {
2452            new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/" + dir + "/User Pack").mkdirs();
2453            Uri uri;
2454            if (Build.VERSION.SDK_INT >= 24) {
2455                Intent tmp = ((StorageManager) activity.getSystemService(Context.STORAGE_SERVICE)).getPrimaryStorageVolume().createOpenDocumentTreeIntent();
2456                uri = tmp.getParcelableExtra("android.provider.extra.INITIAL_URI");
2457                uri = Uri.parse(uri.toString().replace("/root/", "/document/") + "%3APictures%2F" + dir);
2458            } else {
2459                uri = Uri.parse("content://com.android.externalstorage.documents/document/primary%3APictures%2F" + dir);
2460            }
2461            intent.putExtra("android.provider.extra.INITIAL_URI", uri);
2462            intent.putExtra("android.content.extra.SHOW_ADVANCED", true);
2463        }
2464
2465        Toast.makeText(activity, "Choose a sticker pack to add this sticker to", Toast.LENGTH_SHORT).show();
2466        startActivityForResult(Intent.createChooser(intent, "Choose sticker pack"), REQUEST_SAVE_STICKER);
2467    }
2468
2469    private void deleteFile(final Message message) {
2470        AlertDialog.Builder builder = new AlertDialog.Builder(requireActivity());
2471        builder.setNegativeButton(R.string.cancel, null);
2472        builder.setTitle(R.string.delete_file_dialog);
2473        builder.setMessage(R.string.delete_file_dialog_msg);
2474        builder.setPositiveButton(
2475                R.string.confirm,
2476                (dialog, which) -> {
2477                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2478                        message.setDeleted(true);
2479                        activity.xmppConnectionService.evictPreview(activity.xmppConnectionService.getFileBackend().getFile(message));
2480                        activity.xmppConnectionService.updateMessage(message, false);
2481                        activity.onConversationsListItemUpdated();
2482                        refresh();
2483                    }
2484                });
2485        builder.create().show();
2486    }
2487
2488    private void resendMessage(final Message message) {
2489        if (message.isFileOrImage()) {
2490            if (!(message.getConversation() instanceof Conversation)) {
2491                return;
2492            }
2493            final Conversation conversation = (Conversation) message.getConversation();
2494            final DownloadableFile file =
2495                    activity.xmppConnectionService.getFileBackend().getFile(message);
2496            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2497                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2498                if (!message.hasFileOnRemoteHost()
2499                        && xmppConnection != null
2500                        && conversation.getMode() == Conversational.MODE_SINGLE
2501                        && !xmppConnection
2502                                .getFeatures()
2503                                .httpUpload(message.getFileParams().getSize())) {
2504                    activity.selectPresence(
2505                            conversation,
2506                            () -> {
2507                                message.setCounterpart(conversation.getNextCounterpart());
2508                                activity.xmppConnectionService.resendFailedMessages(message);
2509                                new Handler()
2510                                        .post(
2511                                                () -> {
2512                                                    int size = messageList.size();
2513                                                    this.binding.messagesView.setSelection(
2514                                                            size - 1);
2515                                                });
2516                            });
2517                    return;
2518                }
2519            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2520                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2521                return;
2522            } else {
2523                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2524                message.setDeleted(true);
2525                activity.xmppConnectionService.updateMessage(message, false);
2526                activity.onConversationsListItemUpdated();
2527                refresh();
2528                return;
2529            }
2530        }
2531        activity.xmppConnectionService.resendFailedMessages(message);
2532        new Handler()
2533                .post(
2534                        () -> {
2535                            int size = messageList.size();
2536                            this.binding.messagesView.setSelection(size - 1);
2537                        });
2538    }
2539
2540    private void cancelTransmission(Message message) {
2541        Transferable transferable = message.getTransferable();
2542        if (transferable != null) {
2543            transferable.cancel();
2544        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2545            activity.xmppConnectionService.markMessage(
2546                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2547        }
2548    }
2549
2550    private void retryDecryption(Message message) {
2551        message.setEncryption(Message.ENCRYPTION_PGP);
2552        activity.onConversationsListItemUpdated();
2553        refresh();
2554        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2555    }
2556
2557    public void privateMessageWith(final Jid counterpart) {
2558        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2559            activity.xmppConnectionService.sendChatState(conversation);
2560        }
2561        this.binding.textinput.setText("");
2562        this.conversation.setNextCounterpart(counterpart);
2563        updateChatMsgHint();
2564        updateSendButton();
2565        updateEditablity();
2566    }
2567
2568    private void correctMessage(Message message) {
2569        while (message.mergeable(message.next())) {
2570            message = message.next();
2571        }
2572        this.conversation.setCorrectingMessage(message);
2573        final Editable editable = binding.textinput.getText();
2574        this.conversation.setDraftMessage(editable.toString());
2575        this.binding.textinput.setText("");
2576        this.binding.textinput.append(message.getBody());
2577    }
2578
2579    private void highlightInConference(String nick) {
2580        final Editable editable = this.binding.textinput.getText();
2581        String oldString = editable.toString().trim();
2582        final int pos = this.binding.textinput.getSelectionStart();
2583        if (oldString.isEmpty() || pos == 0) {
2584            editable.insert(0, nick + ": ");
2585        } else {
2586            final char before = editable.charAt(pos - 1);
2587            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2588            if (before == '\n') {
2589                editable.insert(pos, nick + ": ");
2590            } else {
2591                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2592                    if (NickValidityChecker.check(
2593                            conversation,
2594                            Arrays.asList(
2595                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2596                        editable.insert(pos - 2, ", " + nick);
2597                        return;
2598                    }
2599                }
2600                editable.insert(
2601                        pos,
2602                        (Character.isWhitespace(before) ? "" : " ")
2603                                + nick
2604                                + (Character.isWhitespace(after) ? "" : " "));
2605                if (Character.isWhitespace(after)) {
2606                    this.binding.textinput.setSelection(
2607                            this.binding.textinput.getSelectionStart() + 1);
2608                }
2609            }
2610        }
2611    }
2612
2613    @Override
2614    public void startActivityForResult(Intent intent, int requestCode) {
2615        final Activity activity = getActivity();
2616        if (activity instanceof ConversationsActivity) {
2617            ((ConversationsActivity) activity).clearPendingViewIntent();
2618        }
2619        super.startActivityForResult(intent, requestCode);
2620    }
2621
2622    @Override
2623    public void onSaveInstanceState(@NotNull Bundle outState) {
2624        super.onSaveInstanceState(outState);
2625        if (conversation != null) {
2626            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2627            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2628            final Uri uri = pendingTakePhotoUri.peek();
2629            if (uri != null) {
2630                outState.putString(STATE_PHOTO_URI, uri.toString());
2631            }
2632            final ScrollState scrollState = getScrollPosition();
2633            if (scrollState != null) {
2634                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2635            }
2636            final ArrayList<Attachment> attachments =
2637                    mediaPreviewAdapter == null
2638                            ? new ArrayList<>()
2639                            : mediaPreviewAdapter.getAttachments();
2640            if (attachments.size() > 0) {
2641                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2642            }
2643        }
2644    }
2645
2646    @Override
2647    public void onActivityCreated(Bundle savedInstanceState) {
2648        super.onActivityCreated(savedInstanceState);
2649        if (savedInstanceState == null) {
2650            return;
2651        }
2652        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2653        ArrayList<Attachment> attachments =
2654                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2655        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2656        if (uuid != null) {
2657            QuickLoader.set(uuid);
2658            this.pendingConversationsUuid.push(uuid);
2659            if (attachments != null && attachments.size() > 0) {
2660                this.pendingMediaPreviews.push(attachments);
2661            }
2662            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2663            if (takePhotoUri != null) {
2664                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2665            }
2666            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2667        }
2668    }
2669
2670    @Override
2671    public void onStart() {
2672        super.onStart();
2673        if (this.reInitRequiredOnStart && this.conversation != null) {
2674            final Bundle extras = pendingExtras.pop();
2675            reInit(this.conversation, extras != null);
2676            if (extras != null) {
2677                processExtras(extras);
2678            }
2679        } else if (conversation == null
2680                && activity != null
2681                && activity.xmppConnectionService != null) {
2682            final String uuid = pendingConversationsUuid.pop();
2683            Log.d(
2684                    Config.LOGTAG,
2685                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2686                            + uuid);
2687            if (uuid != null) {
2688                findAndReInitByUuidOrArchive(uuid);
2689            }
2690        }
2691    }
2692
2693    @Override
2694    public void onStop() {
2695        super.onStop();
2696        final Activity activity = getActivity();
2697        messageListAdapter.unregisterListenerInAudioPlayer();
2698        if (activity == null || !activity.isChangingConfigurations()) {
2699            hideSoftKeyboard(activity);
2700            messageListAdapter.stopAudioPlayer();
2701        }
2702        if (this.conversation != null) {
2703            final String msg = this.binding.textinput.getText().toString();
2704            storeNextMessage(msg);
2705            updateChatState(this.conversation, msg);
2706            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2707        }
2708        this.reInitRequiredOnStart = true;
2709    }
2710
2711    private void updateChatState(final Conversation conversation, final String msg) {
2712        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2713        Account.State status = conversation.getAccount().getStatus();
2714        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2715            activity.xmppConnectionService.sendChatState(conversation);
2716        }
2717    }
2718
2719    private void saveMessageDraftStopAudioPlayer() {
2720        final Conversation previousConversation = this.conversation;
2721        if (this.activity == null || this.binding == null || previousConversation == null) {
2722            return;
2723        }
2724        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2725        final String msg = this.binding.textinput.getText().toString();
2726        storeNextMessage(msg);
2727        updateChatState(this.conversation, msg);
2728        messageListAdapter.stopAudioPlayer();
2729        mediaPreviewAdapter.clearPreviews();
2730        toggleInputMethod();
2731    }
2732
2733    public void reInit(final Conversation conversation, final Bundle extras) {
2734        QuickLoader.set(conversation.getUuid());
2735        final boolean changedConversation = this.conversation != conversation;
2736        if (changedConversation) {
2737            this.saveMessageDraftStopAudioPlayer();
2738        }
2739        this.clearPending();
2740        if (this.reInit(conversation, extras != null)) {
2741            if (extras != null) {
2742                processExtras(extras);
2743            }
2744            this.reInitRequiredOnStart = false;
2745        } else {
2746            this.reInitRequiredOnStart = true;
2747            pendingExtras.push(extras);
2748        }
2749        resetUnreadMessagesCount();
2750    }
2751
2752    private void reInit(Conversation conversation) {
2753        reInit(conversation, false);
2754    }
2755
2756    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2757        if (conversation == null) {
2758            return false;
2759        }
2760        final Conversation originalConversation = this.conversation;
2761        this.conversation = conversation;
2762        // once we set the conversation all is good and it will automatically do the right thing in
2763        // onStart()
2764        if (this.activity == null || this.binding == null) {
2765            return false;
2766        }
2767
2768        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2769            activity.onConversationArchived(this.conversation);
2770            return false;
2771        }
2772
2773        setThread(conversation.getThread());
2774        setupReply(conversation.getReplyTo());
2775
2776        stopScrolling();
2777        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2778
2779        if (this.conversation.isRead() && hasExtras) {
2780            Log.d(Config.LOGTAG, "trimming conversation");
2781            this.conversation.trim();
2782        }
2783
2784        setupIme();
2785
2786        final boolean scrolledToBottomAndNoPending =
2787                this.scrolledToBottom() && pendingScrollState.peek() == null;
2788
2789        this.binding.textSendButton.setContentDescription(
2790                activity.getString(R.string.send_message_to_x, conversation.getName()));
2791        this.binding.textinput.setKeyboardListener(null);
2792        this.binding.textinput.setText("");
2793        final boolean participating =
2794                conversation.getMode() == Conversational.MODE_SINGLE
2795                        || conversation.getMucOptions().participating();
2796        if (participating) {
2797            this.binding.textinput.append(this.conversation.getNextMessage());
2798        }
2799        this.binding.textinput.setKeyboardListener(this);
2800        messageListAdapter.updatePreferences();
2801        refresh(false);
2802        activity.invalidateOptionsMenu();
2803        this.conversation.messagesLoaded.set(true);
2804        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2805
2806        if (hasExtras || scrolledToBottomAndNoPending) {
2807            resetUnreadMessagesCount();
2808            synchronized (this.messageList) {
2809                Log.d(Config.LOGTAG, "jump to first unread message");
2810                final Message first = conversation.getFirstUnreadMessage();
2811                final int bottom = Math.max(0, this.messageList.size() - 1);
2812                final int pos;
2813                final boolean jumpToBottom;
2814                if (first == null) {
2815                    pos = bottom;
2816                    jumpToBottom = true;
2817                } else {
2818                    int i = getIndexOf(first.getUuid(), this.messageList);
2819                    pos = i < 0 ? bottom : i;
2820                    jumpToBottom = false;
2821                }
2822                setSelection(pos, jumpToBottom);
2823            }
2824        }
2825
2826        this.binding.messagesView.post(this::fireReadEvent);
2827        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2828        // layout which might be unnecessary since we can *see* it
2829        activity.xmppConnectionService
2830                .getNotificationService()
2831                .setOpenConversation(this.conversation);
2832
2833        if (commandAdapter != null && conversation != originalConversation) {
2834            originalConversation.setupViewPager(null, null);
2835            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2836            refreshCommands();
2837        }
2838        if (commandAdapter == null && conversation != null) {
2839            conversation.setupViewPager(binding.conversationViewPager, binding.tabLayout);
2840            commandAdapter = new CommandAdapter((XmppActivity) getActivity());
2841            binding.commandsView.setAdapter(commandAdapter);
2842            binding.commandsView.setOnItemClickListener((parent, view, position, id) -> {
2843                final Element command = commandAdapter.getItem(position);
2844                activity.startCommand(conversation.getAccount(), command.getAttributeAsJid("jid"), command.getAttribute("node"));
2845            });
2846            refreshCommands();
2847        }
2848
2849        return true;
2850    }
2851
2852    public void refreshForNewCaps() {
2853        refreshCommands();
2854    }
2855
2856    protected void refreshCommands() {
2857        if (commandAdapter == null) return;
2858
2859        Jid commandJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2860        if (commandJid == null) {
2861            conversation.hideViewPager();
2862        } else {
2863            conversation.showViewPager();
2864            activity.xmppConnectionService.fetchCommands(conversation.getAccount(), commandJid, (a, iq) -> {
2865                if (activity == null) return;
2866
2867                activity.runOnUiThread(() -> {
2868                    if (iq.getType() == IqPacket.TYPE.RESULT) {
2869                        binding.commandsViewProgressbar.setVisibility(View.GONE);
2870                        commandAdapter.clear();
2871                        for (Element child : iq.query().getChildren()) {
2872                            if (!"item".equals(child.getName()) || !Namespace.DISCO_ITEMS.equals(child.getNamespace())) continue;
2873                            commandAdapter.add(child);
2874                        }
2875                    }
2876
2877                    if (commandAdapter.getCount() < 1) conversation.hideViewPager();
2878                });
2879            });
2880        }
2881    }
2882
2883    private void resetUnreadMessagesCount() {
2884        lastMessageUuid = null;
2885        hideUnreadMessagesCount();
2886    }
2887
2888    private void hideUnreadMessagesCount() {
2889        if (this.binding == null) {
2890            return;
2891        }
2892        this.binding.scrollToBottomButton.setEnabled(false);
2893        this.binding.scrollToBottomButton.hide();
2894        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2895    }
2896
2897    private void setSelection(int pos, boolean jumpToBottom) {
2898        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2899        this.binding.messagesView.post(
2900                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2901        this.binding.messagesView.post(this::fireReadEvent);
2902    }
2903
2904    private boolean scrolledToBottom() {
2905        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2906    }
2907
2908    private void processExtras(final Bundle extras) {
2909        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2910        final String text = extras.getString(Intent.EXTRA_TEXT);
2911        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2912        final String node = extras.getString(ConversationsActivity.EXTRA_NODE);
2913        final String postInitAction =
2914                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2915        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2916        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2917        final boolean doNotAppend =
2918                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2919        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2920        final List<Uri> uris = extractUris(extras);
2921        if (uris != null && uris.size() > 0) {
2922            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2923                mediaPreviewAdapter.addMediaPreviews(
2924                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2925            } else {
2926                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2927                mediaPreviewAdapter.addMediaPreviews(
2928                        Attachment.of(getActivity(), cleanedUris, type));
2929            }
2930            toggleInputMethod();
2931            return;
2932        }
2933        if (nick != null) {
2934            if (pm) {
2935                Jid jid = conversation.getJid();
2936                try {
2937                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2938                    privateMessageWith(next);
2939                } catch (final IllegalArgumentException ignored) {
2940                    // do nothing
2941                }
2942            } else {
2943                final MucOptions mucOptions = conversation.getMucOptions();
2944                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2945                    highlightInConference(nick);
2946                }
2947            }
2948        } else {
2949            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2950                mediaPreviewAdapter.addMediaPreviews(
2951                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2952                toggleInputMethod();
2953                return;
2954            } else if (text != null && asQuote) {
2955                quoteText(text);
2956            } else {
2957                appendText(text, doNotAppend);
2958            }
2959        }
2960        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2961            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2962            return;
2963        }
2964        if ("call".equals(postInitAction)) {
2965            checkPermissionAndTriggerAudioCall();
2966        }
2967        if ("message".equals(postInitAction)) {
2968            binding.conversationViewPager.post(() -> {
2969                binding.conversationViewPager.setCurrentItem(0);
2970            });
2971        }
2972        if ("command".equals(postInitAction)) {
2973            binding.conversationViewPager.post(() -> {
2974                PagerAdapter adapter = binding.conversationViewPager.getAdapter();
2975                if (adapter != null && adapter.getCount() > 1) {
2976                    binding.conversationViewPager.setCurrentItem(1);
2977                }
2978                final String jid = extras.getString(ConversationsActivity.EXTRA_JID);
2979                Jid commandJid = null;
2980                if (jid != null) {
2981                    try {
2982                        commandJid = Jid.of(jid);
2983                    } catch (final IllegalArgumentException e) { }
2984                }
2985                if (commandJid == null || !commandJid.isFullJid()) {
2986                    final Jid discoJid = conversation.getContact().resourceWhichSupport(Namespace.COMMANDS);
2987                    if (discoJid != null) commandJid = discoJid;
2988                }
2989                if (node != null && commandJid != null) {
2990                    conversation.startCommand(commandFor(commandJid, node), activity.xmppConnectionService);
2991                }
2992            });
2993            return;
2994        }
2995        final Message message =
2996                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2997        if (message != null) {
2998            startDownloadable(message);
2999        }
3000    }
3001
3002    private Element commandFor(final Jid jid, final String node) {
3003        if (commandAdapter != null) {
3004            for (int i = 0; i < commandAdapter.getCount(); i++) {
3005                Element command = commandAdapter.getItem(i);
3006                final String commandNode = command.getAttribute("node");
3007                if (commandNode == null || !commandNode.equals(node)) continue;
3008
3009                final Jid commandJid = command.getAttributeAsJid("jid");
3010                if (commandJid != null && !commandJid.asBareJid().equals(jid.asBareJid())) continue;
3011
3012                return command;
3013            }
3014        }
3015
3016        return new Element("command", Namespace.COMMANDS).setAttribute("name", node).setAttribute("node", node).setAttribute("jid", jid);
3017    }
3018
3019    private List<Uri> extractUris(final Bundle extras) {
3020        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
3021        if (uris != null) {
3022            return uris;
3023        }
3024        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
3025        if (uri != null) {
3026            return Collections.singletonList(uri);
3027        } else {
3028            return null;
3029        }
3030    }
3031
3032    private List<Uri> cleanUris(final List<Uri> uris) {
3033        final Iterator<Uri> iterator = uris.iterator();
3034        while (iterator.hasNext()) {
3035            final Uri uri = iterator.next();
3036            if (FileBackend.weOwnFile(uri)) {
3037                iterator.remove();
3038                Toast.makeText(
3039                                getActivity(),
3040                                R.string.security_violation_not_attaching_file,
3041                                Toast.LENGTH_SHORT)
3042                        .show();
3043            }
3044        }
3045        return uris;
3046    }
3047
3048    private boolean showBlockSubmenu(View view) {
3049        final Jid jid = conversation.getJid();
3050        final boolean showReject =
3051                !conversation.isWithStranger()
3052                        && conversation
3053                                .getContact()
3054                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
3055        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
3056        popupMenu.inflate(R.menu.block);
3057        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
3058        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
3059        popupMenu.setOnMenuItemClickListener(
3060                menuItem -> {
3061                    Blockable blockable;
3062                    switch (menuItem.getItemId()) {
3063                        case R.id.reject:
3064                            activity.xmppConnectionService.stopPresenceUpdatesTo(
3065                                    conversation.getContact());
3066                            updateSnackBar(conversation);
3067                            return true;
3068                        case R.id.block_domain:
3069                            blockable =
3070                                    conversation
3071                                            .getAccount()
3072                                            .getRoster()
3073                                            .getContact(jid.getDomain());
3074                            break;
3075                        default:
3076                            blockable = conversation;
3077                    }
3078                    BlockContactDialog.show(activity, blockable);
3079                    return true;
3080                });
3081        popupMenu.show();
3082        return true;
3083    }
3084
3085    private void updateSnackBar(final Conversation conversation) {
3086        final Account account = conversation.getAccount();
3087        final XmppConnection connection = account.getXmppConnection();
3088        final int mode = conversation.getMode();
3089        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
3090        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
3091            return;
3092        }
3093        if (account.getStatus() == Account.State.DISABLED) {
3094            showSnackbar(
3095                    R.string.this_account_is_disabled,
3096                    R.string.enable,
3097                    this.mEnableAccountListener);
3098        } else if (conversation.isBlocked()) {
3099            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
3100        } else if (contact != null
3101                && !contact.showInRoster()
3102                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
3103            showSnackbar(
3104                    R.string.contact_added_you,
3105                    R.string.add_back,
3106                    this.mAddBackClickListener,
3107                    this.mLongPressBlockListener);
3108        } else if (contact != null
3109                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
3110            showSnackbar(
3111                    R.string.contact_asks_for_presence_subscription,
3112                    R.string.allow,
3113                    this.mAllowPresenceSubscription,
3114                    this.mLongPressBlockListener);
3115        } else if (mode == Conversation.MODE_MULTI
3116                && !conversation.getMucOptions().online()
3117                && account.getStatus() == Account.State.ONLINE) {
3118            switch (conversation.getMucOptions().getError()) {
3119                case NICK_IN_USE:
3120                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
3121                    break;
3122                case NO_RESPONSE:
3123                    showSnackbar(R.string.joining_conference, 0, null);
3124                    break;
3125                case SERVER_NOT_FOUND:
3126                    if (conversation.receivedMessagesCount() > 0) {
3127                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
3128                    } else {
3129                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
3130                    }
3131                    break;
3132                case REMOTE_SERVER_TIMEOUT:
3133                    if (conversation.receivedMessagesCount() > 0) {
3134                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
3135                    } else {
3136                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
3137                    }
3138                    break;
3139                case PASSWORD_REQUIRED:
3140                    showSnackbar(
3141                            R.string.conference_requires_password,
3142                            R.string.enter_password,
3143                            enterPassword);
3144                    break;
3145                case BANNED:
3146                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
3147                    break;
3148                case MEMBERS_ONLY:
3149                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
3150                    break;
3151                case RESOURCE_CONSTRAINT:
3152                    showSnackbar(
3153                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
3154                    break;
3155                case KICKED:
3156                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
3157                    break;
3158                case TECHNICAL_PROBLEMS:
3159                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
3160                    break;
3161                case UNKNOWN:
3162                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
3163                    break;
3164                case INVALID_NICK:
3165                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
3166                case SHUTDOWN:
3167                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
3168                    break;
3169                case DESTROYED:
3170                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
3171                    break;
3172                case NON_ANONYMOUS:
3173                    showSnackbar(
3174                            R.string.group_chat_will_make_your_jabber_id_public,
3175                            R.string.join,
3176                            acceptJoin);
3177                    break;
3178                default:
3179                    hideSnackbar();
3180                    break;
3181            }
3182        } else if (account.hasPendingPgpIntent(conversation)) {
3183            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
3184        } else if (connection != null
3185                && connection.getFeatures().blocking()
3186                && conversation.countMessages() != 0
3187                && !conversation.isBlocked()
3188                && conversation.isWithStranger()) {
3189            showSnackbar(
3190                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
3191        } else {
3192            hideSnackbar();
3193        }
3194    }
3195
3196    @Override
3197    public void refresh() {
3198        if (this.binding == null) {
3199            Log.d(
3200                    Config.LOGTAG,
3201                    "ConversationFragment.refresh() skipped updated because view binding was null");
3202            return;
3203        }
3204        if (this.conversation != null
3205                && this.activity != null
3206                && this.activity.xmppConnectionService != null) {
3207            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
3208                activity.onConversationArchived(this.conversation);
3209                return;
3210            }
3211        }
3212        this.refresh(true);
3213    }
3214
3215    private void refresh(boolean notifyConversationRead) {
3216        synchronized (this.messageList) {
3217            if (this.conversation != null) {
3218                conversation.populateWithMessages(this.messageList);
3219                updateSnackBar(conversation);
3220                updateStatusMessages();
3221                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
3222                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
3223                    binding.unreadCountCustomView.setUnreadCount(
3224                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
3225                }
3226                this.messageListAdapter.notifyDataSetChanged();
3227                updateChatMsgHint();
3228                if (notifyConversationRead && activity != null) {
3229                    binding.messagesView.post(this::fireReadEvent);
3230                }
3231                updateSendButton();
3232                updateEditablity();
3233            }
3234        }
3235    }
3236
3237    protected void messageSent() {
3238        mSendingPgpMessage.set(false);
3239        this.binding.textinput.setText("");
3240        if (conversation.setCorrectingMessage(null)) {
3241            this.binding.textinput.append(conversation.getDraftMessage());
3242            conversation.setDraftMessage(null);
3243        }
3244        storeNextMessage();
3245        updateChatMsgHint();
3246        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
3247        final boolean prefScrollToBottom =
3248                p.getBoolean(
3249                        "scroll_to_bottom",
3250                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
3251        if (prefScrollToBottom || scrolledToBottom()) {
3252            new Handler()
3253                    .post(
3254                            () -> {
3255                                int size = messageList.size();
3256                                this.binding.messagesView.setSelection(size - 1);
3257                            });
3258        }
3259    }
3260
3261    private boolean storeNextMessage() {
3262        return storeNextMessage(this.binding.textinput.getText().toString());
3263    }
3264
3265    private boolean storeNextMessage(String msg) {
3266        final boolean participating =
3267                conversation.getMode() == Conversational.MODE_SINGLE
3268                        || conversation.getMucOptions().participating();
3269        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
3270                && participating
3271                && this.conversation.setNextMessage(msg)) {
3272            this.activity.xmppConnectionService.updateConversation(this.conversation);
3273            return true;
3274        }
3275        return false;
3276    }
3277
3278    public void doneSendingPgpMessage() {
3279        mSendingPgpMessage.set(false);
3280    }
3281
3282    public long getMaxHttpUploadSize(Conversation conversation) {
3283        final XmppConnection connection = conversation.getAccount().getXmppConnection();
3284        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
3285    }
3286
3287    private void updateEditablity() {
3288        boolean canWrite =
3289                this.conversation.getMode() == Conversation.MODE_SINGLE
3290                        || this.conversation.getMucOptions().participating()
3291                        || this.conversation.getNextCounterpart() != null;
3292        this.binding.textinput.setFocusable(canWrite);
3293        this.binding.textinput.setFocusableInTouchMode(canWrite);
3294        this.binding.textSendButton.setEnabled(canWrite);
3295        this.binding.textinput.setCursorVisible(canWrite);
3296        this.binding.textinput.setEnabled(canWrite);
3297    }
3298
3299    public void updateSendButton() {
3300        boolean hasAttachments =
3301                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
3302        final Conversation c = this.conversation;
3303        final Presence.Status status;
3304        final String text =
3305                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
3306        final SendButtonAction action;
3307        if (hasAttachments) {
3308            action = SendButtonAction.TEXT;
3309        } else {
3310            action = SendButtonTool.getAction(getActivity(), c, text);
3311        }
3312        if (c.getAccount().getStatus() == Account.State.ONLINE) {
3313            if (activity != null
3314                    && activity.xmppConnectionService != null
3315                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
3316                status = Presence.Status.OFFLINE;
3317            } else if (c.getMode() == Conversation.MODE_SINGLE) {
3318                status = c.getContact().getShownStatus();
3319            } else {
3320                status =
3321                        c.getMucOptions().online()
3322                                ? Presence.Status.ONLINE
3323                                : Presence.Status.OFFLINE;
3324            }
3325        } else {
3326            status = Presence.Status.OFFLINE;
3327        }
3328        this.binding.textSendButton.setTag(action);
3329        final Activity activity = getActivity();
3330        if (activity != null) {
3331            this.binding.textSendButton.setImageResource(
3332                    SendButtonTool.getSendButtonImageResource(activity, action, status));
3333        }
3334
3335        ViewGroup.LayoutParams params = binding.threadIdenticonLayout.getLayoutParams();
3336        if (identiconWidth < 0) identiconWidth = params.width;
3337        if (hasAttachments || binding.textinput.getText().length() > 0) {
3338            binding.conversationViewPager.setCurrentItem(0);
3339            params.width = conversation.getThread() == null ? 0 : identiconWidth;
3340        } else {
3341            params.width = identiconWidth;
3342        }
3343        binding.threadIdenticonLayout.setLayoutParams(params);
3344    }
3345
3346    protected void updateStatusMessages() {
3347        DateSeparator.addAll(this.messageList);
3348        if (showLoadMoreMessages(conversation)) {
3349            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
3350        }
3351        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3352            ChatState state = conversation.getIncomingChatState();
3353            if (state == ChatState.COMPOSING) {
3354                this.messageList.add(
3355                        Message.createStatusMessage(
3356                                conversation,
3357                                getString(R.string.contact_is_typing, conversation.getName())));
3358            } else if (state == ChatState.PAUSED) {
3359                this.messageList.add(
3360                        Message.createStatusMessage(
3361                                conversation,
3362                                getString(
3363                                        R.string.contact_has_stopped_typing,
3364                                        conversation.getName())));
3365            } else {
3366                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3367                    final Message message = this.messageList.get(i);
3368                    if (message.getType() != Message.TYPE_STATUS) {
3369                        if (message.getStatus() == Message.STATUS_RECEIVED) {
3370                            return;
3371                        } else {
3372                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
3373                                this.messageList.add(
3374                                        i + 1,
3375                                        Message.createStatusMessage(
3376                                                conversation,
3377                                                getString(
3378                                                        R.string.contact_has_read_up_to_this_point,
3379                                                        conversation.getName())));
3380                                return;
3381                            }
3382                        }
3383                    }
3384                }
3385            }
3386        } else {
3387            final MucOptions mucOptions = conversation.getMucOptions();
3388            final List<MucOptions.User> allUsers = mucOptions.getUsers();
3389            final Set<ReadByMarker> addedMarkers = new HashSet<>();
3390            ChatState state = ChatState.COMPOSING;
3391            List<MucOptions.User> users =
3392                    conversation.getMucOptions().getUsersWithChatState(state, 5);
3393            if (users.size() == 0) {
3394                state = ChatState.PAUSED;
3395                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
3396            }
3397            if (mucOptions.isPrivateAndNonAnonymous()) {
3398                for (int i = this.messageList.size() - 1; i >= 0; --i) {
3399                    final Set<ReadByMarker> markersForMessage =
3400                            messageList.get(i).getReadByMarkers();
3401                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
3402                    for (ReadByMarker marker : markersForMessage) {
3403                        if (!ReadByMarker.contains(marker, addedMarkers)) {
3404                            addedMarkers.add(
3405                                    marker); // may be put outside this condition. set should do
3406                                             // dedup anyway
3407                            MucOptions.User user = mucOptions.findUser(marker);
3408                            if (user != null && !users.contains(user)) {
3409                                shownMarkers.add(user);
3410                            }
3411                        }
3412                    }
3413                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3414                    final Message statusMessage;
3415                    final int size = shownMarkers.size();
3416                    if (size > 1) {
3417                        final String body;
3418                        if (size <= 4) {
3419                            body =
3420                                    getString(
3421                                            R.string.contacts_have_read_up_to_this_point,
3422                                            UIHelper.concatNames(shownMarkers));
3423                        } else if (ReadByMarker.allUsersRepresented(
3424                                allUsers, markersForMessage, markerForSender)) {
3425                            body = getString(R.string.everyone_has_read_up_to_this_point);
3426                        } else {
3427                            body =
3428                                    getString(
3429                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3430                                            UIHelper.concatNames(shownMarkers, 3),
3431                                            size - 3);
3432                        }
3433                        statusMessage = Message.createStatusMessage(conversation, body);
3434                        statusMessage.setCounterparts(shownMarkers);
3435                    } else if (size == 1) {
3436                        statusMessage =
3437                                Message.createStatusMessage(
3438                                        conversation,
3439                                        getString(
3440                                                R.string.contact_has_read_up_to_this_point,
3441                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3442                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3443                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3444                    } else {
3445                        statusMessage = null;
3446                    }
3447                    if (statusMessage != null) {
3448                        this.messageList.add(i + 1, statusMessage);
3449                    }
3450                    addedMarkers.add(markerForSender);
3451                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3452                        break;
3453                    }
3454                }
3455            }
3456            if (users.size() > 0) {
3457                Message statusMessage;
3458                if (users.size() == 1) {
3459                    MucOptions.User user = users.get(0);
3460                    int id =
3461                            state == ChatState.COMPOSING
3462                                    ? R.string.contact_is_typing
3463                                    : R.string.contact_has_stopped_typing;
3464                    statusMessage =
3465                            Message.createStatusMessage(
3466                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3467                    statusMessage.setTrueCounterpart(user.getRealJid());
3468                    statusMessage.setCounterpart(user.getFullJid());
3469                } else {
3470                    int id =
3471                            state == ChatState.COMPOSING
3472                                    ? R.string.contacts_are_typing
3473                                    : R.string.contacts_have_stopped_typing;
3474                    statusMessage =
3475                            Message.createStatusMessage(
3476                                    conversation, getString(id, UIHelper.concatNames(users)));
3477                    statusMessage.setCounterparts(users);
3478                }
3479                this.messageList.add(statusMessage);
3480            }
3481        }
3482    }
3483
3484    private void stopScrolling() {
3485        long now = SystemClock.uptimeMillis();
3486        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3487        binding.messagesView.dispatchTouchEvent(cancel);
3488    }
3489
3490    private boolean showLoadMoreMessages(final Conversation c) {
3491        if (activity == null || activity.xmppConnectionService == null) {
3492            return false;
3493        }
3494        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3495        final MessageArchiveService service =
3496                activity.xmppConnectionService.getMessageArchiveService();
3497        return mam
3498                && (c.getLastClearHistory().getTimestamp() != 0
3499                        || (c.countMessages() == 0
3500                                && c.messagesLoaded.get()
3501                                && c.hasMessagesLeftOnServer()
3502                                && !service.queryInProgress(c)));
3503    }
3504
3505    private boolean hasMamSupport(final Conversation c) {
3506        if (c.getMode() == Conversation.MODE_SINGLE) {
3507            final XmppConnection connection = c.getAccount().getXmppConnection();
3508            return connection != null && connection.getFeatures().mam();
3509        } else {
3510            return c.getMucOptions().mamSupport();
3511        }
3512    }
3513
3514    protected void showSnackbar(
3515            final int message, final int action, final OnClickListener clickListener) {
3516        showSnackbar(message, action, clickListener, null);
3517    }
3518
3519    protected void showSnackbar(
3520            final int message,
3521            final int action,
3522            final OnClickListener clickListener,
3523            final View.OnLongClickListener longClickListener) {
3524        this.binding.snackbar.setVisibility(View.VISIBLE);
3525        this.binding.snackbar.setOnClickListener(null);
3526        this.binding.snackbarMessage.setText(message);
3527        this.binding.snackbarMessage.setOnClickListener(null);
3528        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3529        if (action != 0) {
3530            this.binding.snackbarAction.setText(action);
3531        }
3532        this.binding.snackbarAction.setOnClickListener(clickListener);
3533        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3534    }
3535
3536    protected void hideSnackbar() {
3537        this.binding.snackbar.setVisibility(View.GONE);
3538    }
3539
3540    protected void sendMessage(Message message) {
3541        activity.xmppConnectionService.sendMessage(message);
3542        messageSent();
3543    }
3544
3545    protected void sendPgpMessage(final Message message) {
3546        final XmppConnectionService xmppService = activity.xmppConnectionService;
3547        final Contact contact = message.getConversation().getContact();
3548        if (!activity.hasPgp()) {
3549            activity.showInstallPgpDialog();
3550            return;
3551        }
3552        if (conversation.getAccount().getPgpSignature() == null) {
3553            activity.announcePgp(
3554                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3555            return;
3556        }
3557        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3558            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3559        }
3560        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3561            if (contact.getPgpKeyId() != 0) {
3562                xmppService
3563                        .getPgpEngine()
3564                        .hasKey(
3565                                contact,
3566                                new UiCallback<Contact>() {
3567
3568                                    @Override
3569                                    public void userInputRequired(
3570                                            PendingIntent pi, Contact contact) {
3571                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3572                                    }
3573
3574                                    @Override
3575                                    public void success(Contact contact) {
3576                                        encryptTextMessage(message);
3577                                    }
3578
3579                                    @Override
3580                                    public void error(int error, Contact contact) {
3581                                        activity.runOnUiThread(
3582                                                () ->
3583                                                        Toast.makeText(
3584                                                                        activity,
3585                                                                        R.string
3586                                                                                .unable_to_connect_to_keychain,
3587                                                                        Toast.LENGTH_SHORT)
3588                                                                .show());
3589                                        mSendingPgpMessage.set(false);
3590                                    }
3591                                });
3592
3593            } else {
3594                showNoPGPKeyDialog(
3595                        false,
3596                        (dialog, which) -> {
3597                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3598                            xmppService.updateConversation(conversation);
3599                            message.setEncryption(Message.ENCRYPTION_NONE);
3600                            xmppService.sendMessage(message);
3601                            messageSent();
3602                        });
3603            }
3604        } else {
3605            if (conversation.getMucOptions().pgpKeysInUse()) {
3606                if (!conversation.getMucOptions().everybodyHasKeys()) {
3607                    Toast warning =
3608                            Toast.makeText(
3609                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3610                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3611                    warning.show();
3612                }
3613                encryptTextMessage(message);
3614            } else {
3615                showNoPGPKeyDialog(
3616                        true,
3617                        (dialog, which) -> {
3618                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3619                            message.setEncryption(Message.ENCRYPTION_NONE);
3620                            xmppService.updateConversation(conversation);
3621                            xmppService.sendMessage(message);
3622                            messageSent();
3623                        });
3624            }
3625        }
3626    }
3627
3628    public void encryptTextMessage(Message message) {
3629        activity.xmppConnectionService
3630                .getPgpEngine()
3631                .encrypt(
3632                        message,
3633                        new UiCallback<Message>() {
3634
3635                            @Override
3636                            public void userInputRequired(PendingIntent pi, Message message) {
3637                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3638                            }
3639
3640                            @Override
3641                            public void success(Message message) {
3642                                // TODO the following two call can be made before the callback
3643                                getActivity().runOnUiThread(() -> messageSent());
3644                            }
3645
3646                            @Override
3647                            public void error(final int error, Message message) {
3648                                getActivity()
3649                                        .runOnUiThread(
3650                                                () -> {
3651                                                    doneSendingPgpMessage();
3652                                                    Toast.makeText(
3653                                                                    getActivity(),
3654                                                                    error == 0
3655                                                                            ? R.string
3656                                                                                    .unable_to_connect_to_keychain
3657                                                                            : error,
3658                                                                    Toast.LENGTH_SHORT)
3659                                                            .show();
3660                                                });
3661                            }
3662                        });
3663    }
3664
3665    public void showNoPGPKeyDialog(boolean plural, DialogInterface.OnClickListener listener) {
3666        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
3667        builder.setIconAttribute(android.R.attr.alertDialogIcon);
3668        if (plural) {
3669            builder.setTitle(getString(R.string.no_pgp_keys));
3670            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3671        } else {
3672            builder.setTitle(getString(R.string.no_pgp_key));
3673            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3674        }
3675        builder.setNegativeButton(getString(R.string.cancel), null);
3676        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3677        builder.create().show();
3678    }
3679
3680    public void appendText(String text, final boolean doNotAppend) {
3681        if (text == null) {
3682            return;
3683        }
3684        final Editable editable = this.binding.textinput.getText();
3685        String previous = editable == null ? "" : editable.toString();
3686        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3687            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3688                    .show();
3689            return;
3690        }
3691        if (UIHelper.isLastLineQuote(previous)) {
3692            text = '\n' + text;
3693        } else if (previous.length() != 0
3694                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3695            text = " " + text;
3696        }
3697        this.binding.textinput.append(text);
3698    }
3699
3700    @Override
3701    public boolean onEnterPressed(final boolean isCtrlPressed) {
3702        if (isCtrlPressed || enterIsSend()) {
3703            sendMessage();
3704            return true;
3705        }
3706        return false;
3707    }
3708
3709    private boolean enterIsSend() {
3710        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3711        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3712    }
3713
3714    public boolean onArrowUpCtrlPressed() {
3715        final Message lastEditableMessage =
3716                conversation == null ? null : conversation.getLastEditableMessage();
3717        if (lastEditableMessage != null) {
3718            correctMessage(lastEditableMessage);
3719            return true;
3720        } else {
3721            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3722                    .show();
3723            return false;
3724        }
3725    }
3726
3727    @Override
3728    public void onTypingStarted() {
3729        final XmppConnectionService service =
3730                activity == null ? null : activity.xmppConnectionService;
3731        if (service == null) {
3732            return;
3733        }
3734        final Account.State status = conversation.getAccount().getStatus();
3735        if (status == Account.State.ONLINE
3736                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3737            service.sendChatState(conversation);
3738        }
3739        runOnUiThread(this::updateSendButton);
3740    }
3741
3742    @Override
3743    public void onTypingStopped() {
3744        final XmppConnectionService service =
3745                activity == null ? null : activity.xmppConnectionService;
3746        if (service == null) {
3747            return;
3748        }
3749        final Account.State status = conversation.getAccount().getStatus();
3750        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3751            service.sendChatState(conversation);
3752        }
3753    }
3754
3755    @Override
3756    public void onTextDeleted() {
3757        final XmppConnectionService service =
3758                activity == null ? null : activity.xmppConnectionService;
3759        if (service == null) {
3760            return;
3761        }
3762        final Account.State status = conversation.getAccount().getStatus();
3763        if (status == Account.State.ONLINE
3764                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3765            service.sendChatState(conversation);
3766        }
3767        if (storeNextMessage()) {
3768            runOnUiThread(
3769                    () -> {
3770                        if (activity == null) {
3771                            return;
3772                        }
3773                        activity.onConversationsListItemUpdated();
3774                    });
3775        }
3776        runOnUiThread(this::updateSendButton);
3777    }
3778
3779    @Override
3780    public void onTextChanged() {
3781        if (conversation != null && conversation.getCorrectingMessage() != null) {
3782            runOnUiThread(this::updateSendButton);
3783        }
3784    }
3785
3786    @Override
3787    public boolean onTabPressed(boolean repeated) {
3788        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3789            return false;
3790        }
3791        if (repeated) {
3792            completionIndex++;
3793        } else {
3794            lastCompletionLength = 0;
3795            completionIndex = 0;
3796            final String content = this.binding.textinput.getText().toString();
3797            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3798            int start =
3799                    lastCompletionCursor > 0
3800                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3801                            : 0;
3802            firstWord = start == 0;
3803            incomplete = content.substring(start, lastCompletionCursor);
3804        }
3805        List<String> completions = new ArrayList<>();
3806        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3807            String name = user.getName();
3808            if (name != null && name.startsWith(incomplete)) {
3809                completions.add(name + (firstWord ? ": " : " "));
3810            }
3811        }
3812        Collections.sort(completions);
3813        if (completions.size() > completionIndex) {
3814            String completion = completions.get(completionIndex).substring(incomplete.length());
3815            this.binding
3816                    .textinput
3817                    .getEditableText()
3818                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3819            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3820            lastCompletionLength = completion.length();
3821        } else {
3822            completionIndex = -1;
3823            this.binding
3824                    .textinput
3825                    .getEditableText()
3826                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3827            lastCompletionLength = 0;
3828        }
3829        return true;
3830    }
3831
3832    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3833        try {
3834            getActivity()
3835                    .startIntentSenderForResult(
3836                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0);
3837        } catch (final SendIntentException ignored) {
3838        }
3839    }
3840
3841    @Override
3842    public void onBackendConnected() {
3843        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3844        String uuid = pendingConversationsUuid.pop();
3845        if (uuid != null) {
3846            if (!findAndReInitByUuidOrArchive(uuid)) {
3847                return;
3848            }
3849        } else {
3850            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3851                clearPending();
3852                activity.onConversationArchived(conversation);
3853                return;
3854            }
3855        }
3856        ActivityResult activityResult = postponedActivityResult.pop();
3857        if (activityResult != null) {
3858            handleActivityResult(activityResult);
3859        }
3860        clearPending();
3861    }
3862
3863    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3864        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3865        if (conversation == null) {
3866            clearPending();
3867            activity.onConversationArchived(null);
3868            return false;
3869        }
3870        reInit(conversation);
3871        ScrollState scrollState = pendingScrollState.pop();
3872        String lastMessageUuid = pendingLastMessageUuid.pop();
3873        List<Attachment> attachments = pendingMediaPreviews.pop();
3874        if (scrollState != null) {
3875            setScrollPosition(scrollState, lastMessageUuid);
3876        }
3877        if (attachments != null && attachments.size() > 0) {
3878            Log.d(Config.LOGTAG, "had attachments on restore");
3879            mediaPreviewAdapter.addMediaPreviews(attachments);
3880            toggleInputMethod();
3881        }
3882        return true;
3883    }
3884
3885    private void clearPending() {
3886        if (postponedActivityResult.clear()) {
3887            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3888            if (pendingTakePhotoUri.clear()) {
3889                Log.e(Config.LOGTAG, "cleared pending photo uri");
3890            }
3891        }
3892        if (pendingScrollState.clear()) {
3893            Log.e(Config.LOGTAG, "cleared scroll state");
3894        }
3895        if (pendingConversationsUuid.clear()) {
3896            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3897        }
3898        if (pendingMediaPreviews.clear()) {
3899            Log.e(Config.LOGTAG, "cleared pending media previews");
3900        }
3901    }
3902
3903    public Conversation getConversation() {
3904        return conversation;
3905    }
3906
3907    @Override
3908    public void onContactPictureLongClicked(View v, final Message message) {
3909        final String fingerprint;
3910        if (message.getEncryption() == Message.ENCRYPTION_PGP
3911                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3912            fingerprint = "pgp";
3913        } else {
3914            fingerprint = message.getFingerprint();
3915        }
3916        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3917        final Contact contact = message.getContact();
3918        if (message.getStatus() <= Message.STATUS_RECEIVED
3919                && (contact == null || !contact.isSelf())) {
3920            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3921                final Jid cp = message.getCounterpart();
3922                if (cp == null || cp.isBareJid()) {
3923                    return;
3924                }
3925                final Jid tcp = message.getTrueCounterpart();
3926                final User userByRealJid =
3927                        tcp != null
3928                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3929                                : null;
3930                final User user =
3931                        userByRealJid != null
3932                                ? userByRealJid
3933                                : conversation.getMucOptions().findUserByFullJid(cp);
3934                popupMenu.inflate(R.menu.muc_details_context);
3935                final Menu menu = popupMenu.getMenu();
3936                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3937                        activity, menu, conversation, user);
3938                popupMenu.setOnMenuItemClickListener(
3939                        menuItem ->
3940                                MucDetailsContextMenuHelper.onContextItemSelected(
3941                                        menuItem, user, activity, fingerprint));
3942            } else {
3943                popupMenu.inflate(R.menu.one_on_one_context);
3944                popupMenu.setOnMenuItemClickListener(
3945                        item -> {
3946                            switch (item.getItemId()) {
3947                                case R.id.action_contact_details:
3948                                    activity.switchToContactDetails(
3949                                            message.getContact(), fingerprint);
3950                                    break;
3951                                case R.id.action_show_qr_code:
3952                                    activity.showQrCode(
3953                                            "xmpp:"
3954                                                    + message.getContact()
3955                                                            .getJid()
3956                                                            .asBareJid()
3957                                                            .toEscapedString());
3958                                    break;
3959                            }
3960                            return true;
3961                        });
3962            }
3963        } else {
3964            popupMenu.inflate(R.menu.account_context);
3965            final Menu menu = popupMenu.getMenu();
3966            menu.findItem(R.id.action_manage_accounts)
3967                    .setVisible(QuickConversationsService.isConversations());
3968            popupMenu.setOnMenuItemClickListener(
3969                    item -> {
3970                        final XmppActivity activity = this.activity;
3971                        if (activity == null) {
3972                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3973                            return true;
3974                        }
3975                        switch (item.getItemId()) {
3976                            case R.id.action_show_qr_code:
3977                                activity.showQrCode(conversation.getAccount().getShareableUri());
3978                                break;
3979                            case R.id.action_account_details:
3980                                activity.switchToAccount(
3981                                        message.getConversation().getAccount(), fingerprint);
3982                                break;
3983                            case R.id.action_manage_accounts:
3984                                AccountUtils.launchManageAccounts(activity);
3985                                break;
3986                        }
3987                        return true;
3988                    });
3989        }
3990        popupMenu.show();
3991    }
3992
3993    @Override
3994    public void onContactPictureClicked(Message message) {
3995        setThread(message.getThread());
3996        conversation.setUserSelectedThread(true);
3997
3998        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3999        if (received) {
4000            if (message.getConversation() instanceof Conversation
4001                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
4002                Jid tcp = message.getTrueCounterpart();
4003                Jid user = message.getCounterpart();
4004                if (user != null && !user.isBareJid()) {
4005                    final MucOptions mucOptions =
4006                            ((Conversation) message.getConversation()).getMucOptions();
4007                    if (mucOptions.participating()
4008                            || ((Conversation) message.getConversation()).getNextCounterpart()
4009                                    != null) {
4010                        if (!mucOptions.isUserInRoom(user)
4011                                && mucOptions.findUserByRealJid(
4012                                                tcp == null ? null : tcp.asBareJid())
4013                                        == null) {
4014                            Toast.makeText(
4015                                            getActivity(),
4016                                            activity.getString(
4017                                                    R.string.user_has_left_conference,
4018                                                    user.getResource()),
4019                                            Toast.LENGTH_SHORT)
4020                                    .show();
4021                        }
4022                        highlightInConference(user.getResource());
4023                    } else {
4024                        Toast.makeText(
4025                                        getActivity(),
4026                                        R.string.you_are_not_participating,
4027                                        Toast.LENGTH_SHORT)
4028                                .show();
4029                    }
4030                }
4031            }
4032        }
4033    }
4034
4035    private Activity requireActivity() {
4036        final Activity activity = getActivity();
4037        if (activity == null) {
4038            throw new IllegalStateException("Activity not attached");
4039        }
4040        return activity;
4041    }
4042}