ConversationFragment.java

   1package eu.siacs.conversations.ui;
   2
   3import static eu.siacs.conversations.ui.XmppActivity.EXTRA_ACCOUNT;
   4import static eu.siacs.conversations.ui.XmppActivity.REQUEST_INVITE_TO_CONVERSATION;
   5import static eu.siacs.conversations.ui.util.SoftKeyboardUtils.hideSoftKeyboard;
   6import static eu.siacs.conversations.utils.PermissionUtils.allGranted;
   7import static eu.siacs.conversations.utils.PermissionUtils.audioGranted;
   8import static eu.siacs.conversations.utils.PermissionUtils.cameraGranted;
   9import static eu.siacs.conversations.utils.PermissionUtils.getFirstDenied;
  10import static eu.siacs.conversations.utils.PermissionUtils.writeGranted;
  11
  12import android.Manifest;
  13import android.annotation.SuppressLint;
  14import android.app.Activity;
  15import android.app.Fragment;
  16import android.app.FragmentManager;
  17import android.app.PendingIntent;
  18import android.content.ActivityNotFoundException;
  19import android.content.Context;
  20import android.content.DialogInterface;
  21import android.content.Intent;
  22import android.content.IntentSender.SendIntentException;
  23import android.content.SharedPreferences;
  24import android.content.pm.PackageManager;
  25import android.content.res.ColorStateList;
  26import android.net.Uri;
  27import android.os.Build;
  28import android.os.Bundle;
  29import android.os.Handler;
  30import android.os.SystemClock;
  31import android.preference.PreferenceManager;
  32import android.provider.MediaStore;
  33import android.text.Editable;
  34import android.text.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.annotation.IdRes;
  60import androidx.annotation.NonNull;
  61import androidx.annotation.StringRes;
  62import androidx.core.view.inputmethod.InputConnectionCompat;
  63import androidx.core.view.inputmethod.InputContentInfoCompat;
  64import androidx.databinding.DataBindingUtil;
  65
  66import com.google.android.material.dialog.MaterialAlertDialogBuilder;
  67import com.google.common.base.Optional;
  68import com.google.common.collect.ImmutableList;
  69
  70import eu.siacs.conversations.Config;
  71import eu.siacs.conversations.R;
  72import eu.siacs.conversations.crypto.axolotl.AxolotlService;
  73import eu.siacs.conversations.crypto.axolotl.FingerprintStatus;
  74import eu.siacs.conversations.databinding.FragmentConversationBinding;
  75import eu.siacs.conversations.entities.Account;
  76import eu.siacs.conversations.entities.Blockable;
  77import eu.siacs.conversations.entities.Contact;
  78import eu.siacs.conversations.entities.Conversation;
  79import eu.siacs.conversations.entities.Conversational;
  80import eu.siacs.conversations.entities.DownloadableFile;
  81import eu.siacs.conversations.entities.Message;
  82import eu.siacs.conversations.entities.MucOptions;
  83import eu.siacs.conversations.entities.MucOptions.User;
  84import eu.siacs.conversations.entities.Presence;
  85import eu.siacs.conversations.entities.ReadByMarker;
  86import eu.siacs.conversations.entities.Transferable;
  87import eu.siacs.conversations.entities.TransferablePlaceholder;
  88import eu.siacs.conversations.http.HttpDownloadConnection;
  89import eu.siacs.conversations.persistance.FileBackend;
  90import eu.siacs.conversations.services.CallIntegrationConnectionService;
  91import eu.siacs.conversations.services.MessageArchiveService;
  92import eu.siacs.conversations.services.QuickConversationsService;
  93import eu.siacs.conversations.services.XmppConnectionService;
  94import eu.siacs.conversations.ui.adapter.MediaPreviewAdapter;
  95import eu.siacs.conversations.ui.adapter.MessageAdapter;
  96import eu.siacs.conversations.ui.util.ActivityResult;
  97import eu.siacs.conversations.ui.util.Attachment;
  98import eu.siacs.conversations.ui.util.ConversationMenuConfigurator;
  99import eu.siacs.conversations.ui.util.DateSeparator;
 100import eu.siacs.conversations.ui.util.EditMessageActionModeCallback;
 101import eu.siacs.conversations.ui.util.ListViewUtils;
 102import eu.siacs.conversations.ui.util.MenuDoubleTabUtil;
 103import eu.siacs.conversations.ui.util.MucDetailsContextMenuHelper;
 104import eu.siacs.conversations.ui.util.PendingItem;
 105import eu.siacs.conversations.ui.util.PresenceSelector;
 106import eu.siacs.conversations.ui.util.ScrollState;
 107import eu.siacs.conversations.ui.util.SendButtonAction;
 108import eu.siacs.conversations.ui.util.SendButtonTool;
 109import eu.siacs.conversations.ui.util.ShareUtil;
 110import eu.siacs.conversations.ui.util.ViewUtil;
 111import eu.siacs.conversations.ui.widget.EditMessage;
 112import eu.siacs.conversations.utils.AccountUtils;
 113import eu.siacs.conversations.utils.Compatibility;
 114import eu.siacs.conversations.utils.GeoHelper;
 115import eu.siacs.conversations.utils.MessageUtils;
 116import eu.siacs.conversations.utils.NickValidityChecker;
 117import eu.siacs.conversations.utils.PermissionUtils;
 118import eu.siacs.conversations.utils.QuickLoader;
 119import eu.siacs.conversations.utils.StylingHelper;
 120import eu.siacs.conversations.utils.TimeFrameUtils;
 121import eu.siacs.conversations.utils.UIHelper;
 122import eu.siacs.conversations.xmpp.Jid;
 123import eu.siacs.conversations.xmpp.XmppConnection;
 124import eu.siacs.conversations.xmpp.chatstate.ChatState;
 125import eu.siacs.conversations.xmpp.jingle.AbstractJingleConnection;
 126import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
 127import eu.siacs.conversations.xmpp.jingle.JingleFileTransferConnection;
 128import eu.siacs.conversations.xmpp.jingle.Media;
 129import eu.siacs.conversations.xmpp.jingle.OngoingRtpSession;
 130import eu.siacs.conversations.xmpp.jingle.RtpCapability;
 131import eu.siacs.conversations.xmpp.jingle.RtpEndUserState;
 132
 133
 134import java.util.ArrayList;
 135import java.util.Arrays;
 136import java.util.Collection;
 137import java.util.Collections;
 138import java.util.HashSet;
 139import java.util.Iterator;
 140import java.util.List;
 141import java.util.Set;
 142import java.util.UUID;
 143import java.util.concurrent.atomic.AtomicBoolean;
 144
 145public class ConversationFragment extends XmppFragment
 146        implements EditMessage.KeyboardListener,
 147                MessageAdapter.OnContactPictureLongClicked,
 148                MessageAdapter.OnContactPictureClicked {
 149
 150    public static final int REQUEST_SEND_MESSAGE = 0x0201;
 151    public static final int REQUEST_DECRYPT_PGP = 0x0202;
 152    public static final int REQUEST_ENCRYPT_MESSAGE = 0x0207;
 153    public static final int REQUEST_TRUST_KEYS_TEXT = 0x0208;
 154    public static final int REQUEST_TRUST_KEYS_ATTACHMENTS = 0x0209;
 155    public static final int REQUEST_START_DOWNLOAD = 0x0210;
 156    public static final int REQUEST_ADD_EDITOR_CONTENT = 0x0211;
 157    public static final int REQUEST_COMMIT_ATTACHMENTS = 0x0212;
 158    public static final int REQUEST_START_AUDIO_CALL = 0x213;
 159    public static final int REQUEST_START_VIDEO_CALL = 0x214;
 160    public static final int ATTACHMENT_CHOICE_CHOOSE_IMAGE = 0x0301;
 161    public static final int ATTACHMENT_CHOICE_TAKE_PHOTO = 0x0302;
 162    public static final int ATTACHMENT_CHOICE_CHOOSE_FILE = 0x0303;
 163    public static final int ATTACHMENT_CHOICE_RECORD_VOICE = 0x0304;
 164    public static final int ATTACHMENT_CHOICE_LOCATION = 0x0305;
 165    public static final int ATTACHMENT_CHOICE_INVALID = 0x0306;
 166    public static final int ATTACHMENT_CHOICE_RECORD_VIDEO = 0x0307;
 167
 168    public static final String RECENTLY_USED_QUICK_ACTION = "recently_used_quick_action";
 169    public static final String STATE_CONVERSATION_UUID =
 170            ConversationFragment.class.getName() + ".uuid";
 171    public static final String STATE_SCROLL_POSITION =
 172            ConversationFragment.class.getName() + ".scroll_position";
 173    public static final String STATE_PHOTO_URI =
 174            ConversationFragment.class.getName() + ".media_previews";
 175    public static final String STATE_MEDIA_PREVIEWS =
 176            ConversationFragment.class.getName() + ".take_photo_uri";
 177    private static final String STATE_LAST_MESSAGE_UUID = "state_last_message_uuid";
 178
 179    private final List<Message> messageList = new ArrayList<>();
 180    private final PendingItem<ActivityResult> postponedActivityResult = new PendingItem<>();
 181    private final PendingItem<String> pendingConversationsUuid = new PendingItem<>();
 182    private final PendingItem<ArrayList<Attachment>> pendingMediaPreviews = new PendingItem<>();
 183    private final PendingItem<Bundle> pendingExtras = new PendingItem<>();
 184    private final PendingItem<Uri> pendingTakePhotoUri = new PendingItem<>();
 185    private final PendingItem<ScrollState> pendingScrollState = new PendingItem<>();
 186    private final PendingItem<String> pendingLastMessageUuid = new PendingItem<>();
 187    private final PendingItem<Message> pendingMessage = new PendingItem<>();
 188    public Uri mPendingEditorContent = null;
 189    protected MessageAdapter messageListAdapter;
 190    private MediaPreviewAdapter mediaPreviewAdapter;
 191    private String lastMessageUuid = null;
 192    private Conversation conversation;
 193    private FragmentConversationBinding binding;
 194    private Toast messageLoaderToast;
 195    private ConversationsActivity activity;
 196    private boolean reInitRequiredOnStart = true;
 197    private final OnClickListener clickToMuc =
 198            new OnClickListener() {
 199
 200                @Override
 201                public void onClick(View v) {
 202                    ConferenceDetailsActivity.open(getActivity(), conversation);
 203                }
 204            };
 205    private final OnClickListener leaveMuc =
 206            new OnClickListener() {
 207
 208                @Override
 209                public void onClick(View v) {
 210                    activity.xmppConnectionService.archiveConversation(conversation);
 211                }
 212            };
 213    private final OnClickListener joinMuc =
 214            new OnClickListener() {
 215
 216                @Override
 217                public void onClick(View v) {
 218                    activity.xmppConnectionService.joinMuc(conversation);
 219                }
 220            };
 221
 222    private final OnClickListener acceptJoin =
 223            new OnClickListener() {
 224                @Override
 225                public void onClick(View v) {
 226                    conversation.setAttribute("accept_non_anonymous", true);
 227                    activity.xmppConnectionService.updateConversation(conversation);
 228                    activity.xmppConnectionService.joinMuc(conversation);
 229                }
 230            };
 231
 232    private final OnClickListener enterPassword =
 233            new OnClickListener() {
 234
 235                @Override
 236                public void onClick(View v) {
 237                    MucOptions muc = conversation.getMucOptions();
 238                    String password = muc.getPassword();
 239                    if (password == null) {
 240                        password = "";
 241                    }
 242                    activity.quickPasswordEdit(
 243                            password,
 244                            value -> {
 245                                activity.xmppConnectionService.providePasswordForMuc(
 246                                        conversation, value);
 247                                return null;
 248                            });
 249                }
 250            };
 251    private final OnScrollListener mOnScrollListener =
 252            new OnScrollListener() {
 253
 254                @Override
 255                public void onScrollStateChanged(AbsListView view, int scrollState) {
 256                    if (AbsListView.OnScrollListener.SCROLL_STATE_IDLE == scrollState) {
 257                        fireReadEvent();
 258                    }
 259                }
 260
 261                @Override
 262                public void onScroll(
 263                        final AbsListView view,
 264                        int firstVisibleItem,
 265                        int visibleItemCount,
 266                        int totalItemCount) {
 267                    toggleScrollDownButton(view);
 268                    synchronized (ConversationFragment.this.messageList) {
 269                        if (firstVisibleItem < 5
 270                                && conversation != null
 271                                && conversation.messagesLoaded.compareAndSet(true, false)
 272                                && messageList.size() > 0) {
 273                            long timestamp;
 274                            if (messageList.get(0).getType() == Message.TYPE_STATUS
 275                                    && messageList.size() >= 2) {
 276                                timestamp = messageList.get(1).getTimeSent();
 277                            } else {
 278                                timestamp = messageList.get(0).getTimeSent();
 279                            }
 280                            activity.xmppConnectionService.loadMoreMessages(
 281                                    conversation,
 282                                    timestamp,
 283                                    new XmppConnectionService.OnMoreMessagesLoaded() {
 284                                        @Override
 285                                        public void onMoreMessagesLoaded(
 286                                                final int c, final Conversation conversation) {
 287                                            if (ConversationFragment.this.conversation
 288                                                    != conversation) {
 289                                                conversation.messagesLoaded.set(true);
 290                                                return;
 291                                            }
 292                                            runOnUiThread(
 293                                                    () -> {
 294                                                        synchronized (messageList) {
 295                                                            final int oldPosition =
 296                                                                    binding.messagesView
 297                                                                            .getFirstVisiblePosition();
 298                                                            Message message = null;
 299                                                            int childPos;
 300                                                            for (childPos = 0;
 301                                                                    childPos + oldPosition
 302                                                                            < messageList.size();
 303                                                                    ++childPos) {
 304                                                                message =
 305                                                                        messageList.get(
 306                                                                                oldPosition
 307                                                                                        + childPos);
 308                                                                if (message.getType()
 309                                                                        != Message.TYPE_STATUS) {
 310                                                                    break;
 311                                                                }
 312                                                            }
 313                                                            final String uuid =
 314                                                                    message != null
 315                                                                            ? message.getUuid()
 316                                                                            : null;
 317                                                            View v =
 318                                                                    binding.messagesView.getChildAt(
 319                                                                            childPos);
 320                                                            final int pxOffset =
 321                                                                    (v == null) ? 0 : v.getTop();
 322                                                            ConversationFragment.this.conversation
 323                                                                    .populateWithMessages(
 324                                                                            ConversationFragment
 325                                                                                    .this
 326                                                                                    .messageList);
 327                                                            try {
 328                                                                updateStatusMessages();
 329                                                            } catch (IllegalStateException e) {
 330                                                                Log.d(
 331                                                                        Config.LOGTAG,
 332                                                                        "caught illegal state exception while updating status messages");
 333                                                            }
 334                                                            messageListAdapter
 335                                                                    .notifyDataSetChanged();
 336                                                            int pos =
 337                                                                    Math.max(
 338                                                                            getIndexOf(
 339                                                                                    uuid,
 340                                                                                    messageList),
 341                                                                            0);
 342                                                            binding.messagesView
 343                                                                    .setSelectionFromTop(
 344                                                                            pos, pxOffset);
 345                                                            if (messageLoaderToast != null) {
 346                                                                messageLoaderToast.cancel();
 347                                                            }
 348                                                            conversation.messagesLoaded.set(true);
 349                                                        }
 350                                                    });
 351                                        }
 352
 353                                        @Override
 354                                        public void informUser(final int resId) {
 355
 356                                            runOnUiThread(
 357                                                    () -> {
 358                                                        if (messageLoaderToast != null) {
 359                                                            messageLoaderToast.cancel();
 360                                                        }
 361                                                        if (ConversationFragment.this.conversation
 362                                                                != conversation) {
 363                                                            return;
 364                                                        }
 365                                                        messageLoaderToast =
 366                                                                Toast.makeText(
 367                                                                        view.getContext(),
 368                                                                        resId,
 369                                                                        Toast.LENGTH_LONG);
 370                                                        messageLoaderToast.show();
 371                                                    });
 372                                        }
 373                                    });
 374                        }
 375                    }
 376                }
 377            };
 378    private final EditMessage.OnCommitContentListener mEditorContentListener =
 379            new EditMessage.OnCommitContentListener() {
 380                @Override
 381                public boolean onCommitContent(
 382                        InputContentInfoCompat inputContentInfo,
 383                        int flags,
 384                        Bundle opts,
 385                        String[] contentMimeTypes) {
 386                    // try to get permission to read the image, if applicable
 387                    if ((flags & InputConnectionCompat.INPUT_CONTENT_GRANT_READ_URI_PERMISSION)
 388                            != 0) {
 389                        try {
 390                            inputContentInfo.requestPermission();
 391                        } catch (Exception e) {
 392                            Log.e(
 393                                    Config.LOGTAG,
 394                                    "InputContentInfoCompat#requestPermission() failed.",
 395                                    e);
 396                            Toast.makeText(
 397                                            getActivity(),
 398                                            activity.getString(
 399                                                    R.string.no_permission_to_access_x,
 400                                                    inputContentInfo.getDescription()),
 401                                            Toast.LENGTH_LONG)
 402                                    .show();
 403                            return false;
 404                        }
 405                    }
 406                    if (hasPermissions(
 407                            REQUEST_ADD_EDITOR_CONTENT,
 408                            Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
 409                        attachEditorContentToConversation(inputContentInfo.getContentUri());
 410                    } else {
 411                        mPendingEditorContent = inputContentInfo.getContentUri();
 412                    }
 413                    return true;
 414                }
 415            };
 416    private Message selectedMessage;
 417    private final OnClickListener mEnableAccountListener =
 418            new OnClickListener() {
 419                @Override
 420                public void onClick(View v) {
 421                    final Account account = conversation == null ? null : conversation.getAccount();
 422                    if (account != null) {
 423                        account.setOption(Account.OPTION_SOFT_DISABLED, false);
 424                        account.setOption(Account.OPTION_DISABLED, false);
 425                        activity.xmppConnectionService.updateAccount(account);
 426                    }
 427                }
 428            };
 429    private final OnClickListener mUnblockClickListener =
 430            new OnClickListener() {
 431                @Override
 432                public void onClick(final View v) {
 433                    v.post(() -> v.setVisibility(View.INVISIBLE));
 434                    if (conversation.isDomainBlocked()) {
 435                        BlockContactDialog.show(activity, conversation);
 436                    } else {
 437                        unblockConversation(conversation);
 438                    }
 439                }
 440            };
 441    private final OnClickListener mBlockClickListener = this::showBlockSubmenu;
 442    private final OnClickListener mAddBackClickListener =
 443            new OnClickListener() {
 444
 445                @Override
 446                public void onClick(View v) {
 447                    final Contact contact = conversation == null ? null : conversation.getContact();
 448                    if (contact != null) {
 449                        activity.xmppConnectionService.createContact(contact, true);
 450                        activity.switchToContactDetails(contact);
 451                    }
 452                }
 453            };
 454    private final View.OnLongClickListener mLongPressBlockListener = this::showBlockSubmenu;
 455    private final OnClickListener mAllowPresenceSubscription =
 456            new OnClickListener() {
 457                @Override
 458                public void onClick(View v) {
 459                    final Contact contact = conversation == null ? null : conversation.getContact();
 460                    if (contact != null) {
 461                        activity.xmppConnectionService.sendPresencePacket(
 462                                contact.getAccount(),
 463                                activity.xmppConnectionService
 464                                        .getPresenceGenerator()
 465                                        .sendPresenceUpdatesTo(contact));
 466                        hideSnackbar();
 467                    }
 468                }
 469            };
 470    protected OnClickListener clickToDecryptListener =
 471            new OnClickListener() {
 472
 473                @Override
 474                public void onClick(View v) {
 475                    PendingIntent pendingIntent =
 476                            conversation.getAccount().getPgpDecryptionService().getPendingIntent();
 477                    if (pendingIntent != null) {
 478                        try {
 479                            getActivity()
 480                                    .startIntentSenderForResult(
 481                                            pendingIntent.getIntentSender(),
 482                                            REQUEST_DECRYPT_PGP,
 483                                            null,
 484                                            0,
 485                                            0,
 486                                            0,
 487                                            Compatibility.pgpStartIntentSenderOptions());
 488                        } catch (SendIntentException e) {
 489                            Toast.makeText(
 490                                            getActivity(),
 491                                            R.string.unable_to_connect_to_keychain,
 492                                            Toast.LENGTH_SHORT)
 493                                    .show();
 494                            conversation
 495                                    .getAccount()
 496                                    .getPgpDecryptionService()
 497                                    .continueDecryption(true);
 498                        }
 499                    }
 500                    updateSnackBar(conversation);
 501                }
 502            };
 503    private final AtomicBoolean mSendingPgpMessage = new AtomicBoolean(false);
 504    private final OnEditorActionListener mEditorActionListener =
 505            (v, actionId, event) -> {
 506                if (actionId == EditorInfo.IME_ACTION_SEND) {
 507                    InputMethodManager imm =
 508                            (InputMethodManager)
 509                                    activity.getSystemService(Context.INPUT_METHOD_SERVICE);
 510                    if (imm != null && imm.isFullscreenMode()) {
 511                        imm.hideSoftInputFromWindow(v.getWindowToken(), 0);
 512                    }
 513                    sendMessage();
 514                    return true;
 515                } else {
 516                    return false;
 517                }
 518            };
 519    private final OnClickListener mScrollButtonListener =
 520            new OnClickListener() {
 521
 522                @Override
 523                public void onClick(View v) {
 524                    stopScrolling();
 525                    setSelection(binding.messagesView.getCount() - 1, true);
 526                }
 527            };
 528    private final OnClickListener mSendButtonListener =
 529            new OnClickListener() {
 530
 531                @Override
 532                public void onClick(View v) {
 533                    Object tag = v.getTag();
 534                    if (tag instanceof SendButtonAction) {
 535                        SendButtonAction action = (SendButtonAction) tag;
 536                        switch (action) {
 537                            case TAKE_PHOTO:
 538                            case RECORD_VIDEO:
 539                            case SEND_LOCATION:
 540                            case RECORD_VOICE:
 541                            case CHOOSE_PICTURE:
 542                                attachFile(action.toChoice());
 543                                break;
 544                            case CANCEL:
 545                                if (conversation != null) {
 546                                    if (conversation.setCorrectingMessage(null)) {
 547                                        binding.textinput.setText("");
 548                                        binding.textinput.append(conversation.getDraftMessage());
 549                                        conversation.setDraftMessage(null);
 550                                    } else if (conversation.getMode() == Conversation.MODE_MULTI) {
 551                                        conversation.setNextCounterpart(null);
 552                                        binding.textinput.setText("");
 553                                    } else {
 554                                        binding.textinput.setText("");
 555                                    }
 556                                    updateChatMsgHint();
 557                                    updateSendButton();
 558                                    updateEditablity();
 559                                }
 560                                break;
 561                            default:
 562                                sendMessage();
 563                        }
 564                    } else {
 565                        sendMessage();
 566                    }
 567                }
 568            };
 569    private int completionIndex = 0;
 570    private int lastCompletionLength = 0;
 571    private String incomplete;
 572    private int lastCompletionCursor;
 573    private boolean firstWord = false;
 574    private Message mPendingDownloadableMessage;
 575
 576    private static ConversationFragment findConversationFragment(Activity activity) {
 577        Fragment fragment = activity.getFragmentManager().findFragmentById(R.id.main_fragment);
 578        if (fragment instanceof ConversationFragment) {
 579            return (ConversationFragment) fragment;
 580        }
 581        fragment = activity.getFragmentManager().findFragmentById(R.id.secondary_fragment);
 582        if (fragment instanceof ConversationFragment) {
 583            return (ConversationFragment) fragment;
 584        }
 585        return null;
 586    }
 587
 588    public static void startStopPending(Activity activity) {
 589        ConversationFragment fragment = findConversationFragment(activity);
 590        if (fragment != null) {
 591            fragment.messageListAdapter.startStopPending();
 592        }
 593    }
 594
 595    public static void downloadFile(Activity activity, Message message) {
 596        ConversationFragment fragment = findConversationFragment(activity);
 597        if (fragment != null) {
 598            fragment.startDownloadable(message);
 599        }
 600    }
 601
 602    public static void registerPendingMessage(Activity activity, Message message) {
 603        ConversationFragment fragment = findConversationFragment(activity);
 604        if (fragment != null) {
 605            fragment.pendingMessage.push(message);
 606        }
 607    }
 608
 609    public static void openPendingMessage(Activity activity) {
 610        ConversationFragment fragment = findConversationFragment(activity);
 611        if (fragment != null) {
 612            Message message = fragment.pendingMessage.pop();
 613            if (message != null) {
 614                fragment.messageListAdapter.openDownloadable(message);
 615            }
 616        }
 617    }
 618
 619    public static Conversation getConversation(Activity activity) {
 620        return getConversation(activity, R.id.secondary_fragment);
 621    }
 622
 623    private static Conversation getConversation(Activity activity, @IdRes int res) {
 624        final Fragment fragment = activity.getFragmentManager().findFragmentById(res);
 625        if (fragment instanceof ConversationFragment) {
 626            return ((ConversationFragment) fragment).getConversation();
 627        } else {
 628            return null;
 629        }
 630    }
 631
 632    public static ConversationFragment get(Activity activity) {
 633        FragmentManager fragmentManager = activity.getFragmentManager();
 634        Fragment fragment = fragmentManager.findFragmentById(R.id.main_fragment);
 635        if (fragment instanceof ConversationFragment) {
 636            return (ConversationFragment) fragment;
 637        } else {
 638            fragment = fragmentManager.findFragmentById(R.id.secondary_fragment);
 639            return fragment instanceof ConversationFragment
 640                    ? (ConversationFragment) fragment
 641                    : null;
 642        }
 643    }
 644
 645    public static Conversation getConversationReliable(Activity activity) {
 646        final Conversation conversation = getConversation(activity, R.id.secondary_fragment);
 647        if (conversation != null) {
 648            return conversation;
 649        }
 650        return getConversation(activity, R.id.main_fragment);
 651    }
 652
 653    private static boolean scrolledToBottom(AbsListView listView) {
 654        final int count = listView.getCount();
 655        if (count == 0) {
 656            return true;
 657        } else if (listView.getLastVisiblePosition() == count - 1) {
 658            final View lastChild = listView.getChildAt(listView.getChildCount() - 1);
 659            return lastChild != null && lastChild.getBottom() <= listView.getHeight();
 660        } else {
 661            return false;
 662        }
 663    }
 664
 665    private void toggleScrollDownButton() {
 666        toggleScrollDownButton(binding.messagesView);
 667    }
 668
 669    private void toggleScrollDownButton(AbsListView listView) {
 670        if (conversation == null) {
 671            return;
 672        }
 673        if (scrolledToBottom(listView)) {
 674            lastMessageUuid = null;
 675            hideUnreadMessagesCount();
 676        } else {
 677            binding.scrollToBottomButton.setEnabled(true);
 678            binding.scrollToBottomButton.show();
 679            if (lastMessageUuid == null) {
 680                lastMessageUuid = conversation.getLatestMessage().getUuid();
 681            }
 682            if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) > 0) {
 683                binding.unreadCountCustomView.setVisibility(View.VISIBLE);
 684            }
 685        }
 686    }
 687
 688    private int getIndexOf(String uuid, List<Message> messages) {
 689        if (uuid == null) {
 690            return messages.size() - 1;
 691        }
 692        for (int i = 0; i < messages.size(); ++i) {
 693            if (uuid.equals(messages.get(i).getUuid())) {
 694                return i;
 695            } else {
 696                Message next = messages.get(i);
 697                while (next != null && next.wasMergedIntoPrevious()) {
 698                    if (uuid.equals(next.getUuid())) {
 699                        return i;
 700                    }
 701                    next = next.next();
 702                }
 703            }
 704        }
 705        return -1;
 706    }
 707
 708    private ScrollState getScrollPosition() {
 709        final ListView listView = this.binding == null ? null : this.binding.messagesView;
 710        if (listView == null
 711                || listView.getCount() == 0
 712                || listView.getLastVisiblePosition() == listView.getCount() - 1) {
 713            return null;
 714        } else {
 715            final int pos = listView.getFirstVisiblePosition();
 716            final View view = listView.getChildAt(0);
 717            if (view == null) {
 718                return null;
 719            } else {
 720                return new ScrollState(pos, view.getTop());
 721            }
 722        }
 723    }
 724
 725    private void setScrollPosition(ScrollState scrollPosition, String lastMessageUuid) {
 726        if (scrollPosition != null) {
 727
 728            this.lastMessageUuid = lastMessageUuid;
 729            if (lastMessageUuid != null) {
 730                binding.unreadCountCustomView.setUnreadCount(
 731                        conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
 732            }
 733            // TODO maybe this needs a 'post'
 734            this.binding.messagesView.setSelectionFromTop(
 735                    scrollPosition.position, scrollPosition.offset);
 736            toggleScrollDownButton();
 737        }
 738    }
 739
 740    private void attachLocationToConversation(Conversation conversation, Uri uri) {
 741        if (conversation == null) {
 742            return;
 743        }
 744        activity.xmppConnectionService.attachLocationToConversation(
 745                conversation,
 746                uri,
 747                new UiCallback<Message>() {
 748
 749                    @Override
 750                    public void success(Message message) {}
 751
 752                    @Override
 753                    public void error(int errorCode, Message object) {
 754                        // TODO show possible pgp error
 755                    }
 756
 757                    @Override
 758                    public void userInputRequired(PendingIntent pi, Message object) {}
 759                });
 760    }
 761
 762    private void attachFileToConversation(Conversation conversation, Uri uri, String type) {
 763        if (conversation == null) {
 764            return;
 765        }
 766        final Toast prepareFileToast =
 767                Toast.makeText(getActivity(), getText(R.string.preparing_file), Toast.LENGTH_LONG);
 768        prepareFileToast.show();
 769        activity.delegateUriPermissionsToService(uri);
 770        activity.xmppConnectionService.attachFileToConversation(
 771                conversation,
 772                uri,
 773                type,
 774                new UiInformableCallback<Message>() {
 775                    @Override
 776                    public void inform(final String text) {
 777                        hidePrepareFileToast(prepareFileToast);
 778                        runOnUiThread(() -> activity.replaceToast(text));
 779                    }
 780
 781                    @Override
 782                    public void success(Message message) {
 783                        runOnUiThread(() -> activity.hideToast());
 784                        hidePrepareFileToast(prepareFileToast);
 785                    }
 786
 787                    @Override
 788                    public void error(final int errorCode, Message message) {
 789                        hidePrepareFileToast(prepareFileToast);
 790                        runOnUiThread(() -> activity.replaceToast(getString(errorCode)));
 791                    }
 792
 793                    @Override
 794                    public void userInputRequired(PendingIntent pi, Message message) {
 795                        hidePrepareFileToast(prepareFileToast);
 796                    }
 797                });
 798    }
 799
 800    public void attachEditorContentToConversation(Uri uri) {
 801        mediaPreviewAdapter.addMediaPreviews(
 802                Attachment.of(getActivity(), uri, Attachment.Type.FILE));
 803        toggleInputMethod();
 804    }
 805
 806    private void attachImageToConversation(Conversation conversation, Uri uri, String type) {
 807        if (conversation == null) {
 808            return;
 809        }
 810        final Toast prepareFileToast =
 811                Toast.makeText(getActivity(), getText(R.string.preparing_image), Toast.LENGTH_LONG);
 812        prepareFileToast.show();
 813        activity.delegateUriPermissionsToService(uri);
 814        activity.xmppConnectionService.attachImageToConversation(
 815                conversation,
 816                uri,
 817                type,
 818                new UiCallback<Message>() {
 819
 820                    @Override
 821                    public void userInputRequired(PendingIntent pi, Message object) {
 822                        hidePrepareFileToast(prepareFileToast);
 823                    }
 824
 825                    @Override
 826                    public void success(Message message) {
 827                        hidePrepareFileToast(prepareFileToast);
 828                    }
 829
 830                    @Override
 831                    public void error(final int error, final Message message) {
 832                        hidePrepareFileToast(prepareFileToast);
 833                        final ConversationsActivity activity = ConversationFragment.this.activity;
 834                        if (activity == null) {
 835                            return;
 836                        }
 837                        activity.runOnUiThread(() -> activity.replaceToast(getString(error)));
 838                    }
 839                });
 840    }
 841
 842    private void hidePrepareFileToast(final Toast prepareFileToast) {
 843        if (prepareFileToast != null && activity != null) {
 844            activity.runOnUiThread(prepareFileToast::cancel);
 845        }
 846    }
 847
 848    private void sendMessage() {
 849        if (mediaPreviewAdapter.hasAttachments()) {
 850            commitAttachments();
 851            return;
 852        }
 853        final Editable text = this.binding.textinput.getText();
 854        final String body = text == null ? "" : text.toString();
 855        final Conversation conversation = this.conversation;
 856        if (body.length() == 0 || conversation == null) {
 857            return;
 858        }
 859        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_TEXT)) {
 860            return;
 861        }
 862        final Message message;
 863        if (conversation.getCorrectingMessage() == null) {
 864            message = new Message(conversation, body, conversation.getNextEncryption());
 865            Message.configurePrivateMessage(message);
 866        } else {
 867            message = conversation.getCorrectingMessage();
 868            message.setBody(body);
 869            message.putEdited(message.getUuid(), message.getServerMsgId());
 870            message.setServerMsgId(null);
 871            message.setUuid(UUID.randomUUID().toString());
 872        }
 873        switch (conversation.getNextEncryption()) {
 874            case Message.ENCRYPTION_PGP:
 875                sendPgpMessage(message);
 876                break;
 877            default:
 878                sendMessage(message);
 879        }
 880    }
 881
 882    private boolean trustKeysIfNeeded(final Conversation conversation, final int requestCode) {
 883        return conversation.getNextEncryption() == Message.ENCRYPTION_AXOLOTL
 884                && trustKeysIfNeeded(requestCode);
 885    }
 886
 887    protected boolean trustKeysIfNeeded(int requestCode) {
 888        AxolotlService axolotlService = conversation.getAccount().getAxolotlService();
 889        final List<Jid> targets = axolotlService.getCryptoTargets(conversation);
 890        boolean hasUnaccepted = !conversation.getAcceptedCryptoTargets().containsAll(targets);
 891        boolean hasUndecidedOwn =
 892                !axolotlService
 893                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided())
 894                        .isEmpty();
 895        boolean hasUndecidedContacts =
 896                !axolotlService
 897                        .getKeysWithTrust(FingerprintStatus.createActiveUndecided(), targets)
 898                        .isEmpty();
 899        boolean hasPendingKeys = !axolotlService.findDevicesWithoutSession(conversation).isEmpty();
 900        boolean hasNoTrustedKeys = axolotlService.anyTargetHasNoTrustedKeys(targets);
 901        boolean downloadInProgress = axolotlService.hasPendingKeyFetches(targets);
 902        if (hasUndecidedOwn
 903                || hasUndecidedContacts
 904                || hasPendingKeys
 905                || hasNoTrustedKeys
 906                || hasUnaccepted
 907                || downloadInProgress) {
 908            axolotlService.createSessionsIfNeeded(conversation);
 909            Intent intent = new Intent(getActivity(), TrustKeysActivity.class);
 910            String[] contacts = new String[targets.size()];
 911            for (int i = 0; i < contacts.length; ++i) {
 912                contacts[i] = targets.get(i).toString();
 913            }
 914            intent.putExtra("contacts", contacts);
 915            intent.putExtra(
 916                    EXTRA_ACCOUNT,
 917                    conversation.getAccount().getJid().asBareJid().toEscapedString());
 918            intent.putExtra("conversation", conversation.getUuid());
 919            startActivityForResult(intent, requestCode);
 920            return true;
 921        } else {
 922            return false;
 923        }
 924    }
 925
 926    public void updateChatMsgHint() {
 927        final boolean multi = conversation.getMode() == Conversation.MODE_MULTI;
 928        if (conversation.getCorrectingMessage() != null) {
 929            this.binding.textInputHint.setVisibility(View.GONE);
 930            this.binding.textinput.setHint(R.string.send_corrected_message);
 931        } else if (multi && conversation.getNextCounterpart() != null) {
 932            this.binding.textinput.setHint(R.string.send_unencrypted_message);
 933            this.binding.textInputHint.setVisibility(View.VISIBLE);
 934            this.binding.textInputHint.setText(
 935                    getString(
 936                            R.string.send_private_message_to,
 937                            conversation.getNextCounterpart().getResource()));
 938        } else if (multi && !conversation.getMucOptions().participating()) {
 939            this.binding.textInputHint.setVisibility(View.GONE);
 940            this.binding.textinput.setHint(R.string.you_are_not_participating);
 941        } else {
 942            this.binding.textInputHint.setVisibility(View.GONE);
 943            this.binding.textinput.setHint(UIHelper.getMessageHint(getActivity(), conversation));
 944            getActivity().invalidateOptionsMenu();
 945        }
 946    }
 947
 948    public void setupIme() {
 949        this.binding.textinput.refreshIme();
 950    }
 951
 952    private void handleActivityResult(ActivityResult activityResult) {
 953        if (activityResult.resultCode == Activity.RESULT_OK) {
 954            handlePositiveActivityResult(activityResult.requestCode, activityResult.data);
 955        } else {
 956            handleNegativeActivityResult(activityResult.requestCode);
 957        }
 958    }
 959
 960    private void handlePositiveActivityResult(int requestCode, final Intent data) {
 961        switch (requestCode) {
 962            case REQUEST_TRUST_KEYS_TEXT:
 963                sendMessage();
 964                break;
 965            case REQUEST_TRUST_KEYS_ATTACHMENTS:
 966                commitAttachments();
 967                break;
 968            case REQUEST_START_AUDIO_CALL:
 969                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
 970                break;
 971            case REQUEST_START_VIDEO_CALL:
 972                triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
 973                break;
 974            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
 975                final List<Attachment> imageUris =
 976                        Attachment.extractAttachments(getActivity(), data, Attachment.Type.IMAGE);
 977                mediaPreviewAdapter.addMediaPreviews(imageUris);
 978                toggleInputMethod();
 979                break;
 980            case ATTACHMENT_CHOICE_TAKE_PHOTO:
 981                final Uri takePhotoUri = pendingTakePhotoUri.pop();
 982                if (takePhotoUri != null) {
 983                    mediaPreviewAdapter.addMediaPreviews(
 984                            Attachment.of(getActivity(), takePhotoUri, Attachment.Type.IMAGE));
 985                    toggleInputMethod();
 986                } else {
 987                    Log.d(Config.LOGTAG, "lost take photo uri. unable to to attach");
 988                }
 989                break;
 990            case ATTACHMENT_CHOICE_CHOOSE_FILE:
 991            case ATTACHMENT_CHOICE_RECORD_VIDEO:
 992            case ATTACHMENT_CHOICE_RECORD_VOICE:
 993                final Attachment.Type type =
 994                        requestCode == ATTACHMENT_CHOICE_RECORD_VOICE
 995                                ? Attachment.Type.RECORDING
 996                                : Attachment.Type.FILE;
 997                final List<Attachment> fileUris =
 998                        Attachment.extractAttachments(getActivity(), data, type);
 999                mediaPreviewAdapter.addMediaPreviews(fileUris);
1000                toggleInputMethod();
1001                break;
1002            case ATTACHMENT_CHOICE_LOCATION:
1003                final double latitude = data.getDoubleExtra("latitude", 0);
1004                final double longitude = data.getDoubleExtra("longitude", 0);
1005                final int accuracy = data.getIntExtra("accuracy", 0);
1006                final Uri geo;
1007                if (accuracy > 0) {
1008                    geo = Uri.parse(String.format("geo:%s,%s;u=%s", latitude, longitude, accuracy));
1009                } else {
1010                    geo = Uri.parse(String.format("geo:%s,%s", latitude, longitude));
1011                }
1012                mediaPreviewAdapter.addMediaPreviews(
1013                        Attachment.of(getActivity(), geo, Attachment.Type.LOCATION));
1014                toggleInputMethod();
1015                break;
1016            case REQUEST_INVITE_TO_CONVERSATION:
1017                XmppActivity.ConferenceInvite invite = XmppActivity.ConferenceInvite.parse(data);
1018                if (invite != null) {
1019                    if (invite.execute(activity)) {
1020                        activity.mToast =
1021                                Toast.makeText(
1022                                        activity, R.string.creating_conference, Toast.LENGTH_LONG);
1023                        activity.mToast.show();
1024                    }
1025                }
1026                break;
1027        }
1028    }
1029
1030    private void commitAttachments() {
1031        final List<Attachment> attachments = mediaPreviewAdapter.getAttachments();
1032        if (anyNeedsExternalStoragePermission(attachments)
1033                && !hasPermissions(
1034                        REQUEST_COMMIT_ATTACHMENTS, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1035            return;
1036        }
1037        if (trustKeysIfNeeded(conversation, REQUEST_TRUST_KEYS_ATTACHMENTS)) {
1038            return;
1039        }
1040        final PresenceSelector.OnPresenceSelected callback =
1041                () -> {
1042                    for (Iterator<Attachment> i = attachments.iterator(); i.hasNext(); i.remove()) {
1043                        final Attachment attachment = i.next();
1044                        if (attachment.getType() == Attachment.Type.LOCATION) {
1045                            attachLocationToConversation(conversation, attachment.getUri());
1046                        } else if (attachment.getType() == Attachment.Type.IMAGE) {
1047                            Log.d(
1048                                    Config.LOGTAG,
1049                                    "ConversationsActivity.commitAttachments() - attaching image to conversations. CHOOSE_IMAGE");
1050                            attachImageToConversation(
1051                                    conversation, attachment.getUri(), attachment.getMime());
1052                        } else {
1053                            Log.d(
1054                                    Config.LOGTAG,
1055                                    "ConversationsActivity.commitAttachments() - attaching file to conversations. CHOOSE_FILE/RECORD_VOICE/RECORD_VIDEO");
1056                            attachFileToConversation(
1057                                    conversation, attachment.getUri(), attachment.getMime());
1058                        }
1059                    }
1060                    mediaPreviewAdapter.notifyDataSetChanged();
1061                    toggleInputMethod();
1062                };
1063        if (conversation == null
1064                || conversation.getMode() == Conversation.MODE_MULTI
1065                || Attachment.canBeSendInBand(attachments)
1066                || (conversation.getAccount().httpUploadAvailable()
1067                        && FileBackend.allFilesUnderSize(
1068                                getActivity(), attachments, getMaxHttpUploadSize(conversation)))) {
1069            callback.onPresenceSelected();
1070        } else {
1071            activity.selectPresence(conversation, callback);
1072        }
1073    }
1074
1075    private static boolean anyNeedsExternalStoragePermission(
1076            final Collection<Attachment> attachments) {
1077        for (final Attachment attachment : attachments) {
1078            if (attachment.getType() != Attachment.Type.LOCATION) {
1079                return true;
1080            }
1081        }
1082        return false;
1083    }
1084
1085    public void toggleInputMethod() {
1086        boolean hasAttachments = mediaPreviewAdapter.hasAttachments();
1087        binding.textinput.setVisibility(hasAttachments ? View.GONE : View.VISIBLE);
1088        binding.mediaPreview.setVisibility(hasAttachments ? View.VISIBLE : View.GONE);
1089        updateSendButton();
1090    }
1091
1092    private void handleNegativeActivityResult(int requestCode) {
1093        switch (requestCode) {
1094            case ATTACHMENT_CHOICE_TAKE_PHOTO:
1095                if (pendingTakePhotoUri.clear()) {
1096                    Log.d(
1097                            Config.LOGTAG,
1098                            "cleared pending photo uri after negative activity result");
1099                }
1100                break;
1101        }
1102    }
1103
1104    @Override
1105    public void onActivityResult(int requestCode, int resultCode, final Intent data) {
1106        super.onActivityResult(requestCode, resultCode, data);
1107        ActivityResult activityResult = ActivityResult.of(requestCode, resultCode, data);
1108        if (activity != null && activity.xmppConnectionService != null) {
1109            handleActivityResult(activityResult);
1110        } else {
1111            this.postponedActivityResult.push(activityResult);
1112        }
1113    }
1114
1115    public void unblockConversation(final Blockable conversation) {
1116        activity.xmppConnectionService.sendUnblockRequest(conversation);
1117    }
1118
1119    @Override
1120    public void onAttach(Activity activity) {
1121        super.onAttach(activity);
1122        Log.d(Config.LOGTAG, "ConversationFragment.onAttach()");
1123        if (activity instanceof ConversationsActivity) {
1124            this.activity = (ConversationsActivity) activity;
1125        } else {
1126            throw new IllegalStateException(
1127                    "Trying to attach fragment to activity that is not the ConversationsActivity");
1128        }
1129    }
1130
1131    @Override
1132    public void onDetach() {
1133        super.onDetach();
1134        this.activity = null; // TODO maybe not a good idea since some callbacks really need it
1135    }
1136
1137    @Override
1138    public void onCreate(Bundle savedInstanceState) {
1139        super.onCreate(savedInstanceState);
1140        setHasOptionsMenu(true);
1141    }
1142
1143    @Override
1144    public void onCreateOptionsMenu(Menu menu, MenuInflater menuInflater) {
1145        menuInflater.inflate(R.menu.fragment_conversation, menu);
1146        final MenuItem menuMucDetails = menu.findItem(R.id.action_muc_details);
1147        final MenuItem menuContactDetails = menu.findItem(R.id.action_contact_details);
1148        final MenuItem menuInviteContact = menu.findItem(R.id.action_invite);
1149        final MenuItem menuMute = menu.findItem(R.id.action_mute);
1150        final MenuItem menuUnmute = menu.findItem(R.id.action_unmute);
1151        final MenuItem menuCall = menu.findItem(R.id.action_call);
1152        final MenuItem menuOngoingCall = menu.findItem(R.id.action_ongoing_call);
1153        final MenuItem menuVideoCall = menu.findItem(R.id.action_video_call);
1154        final MenuItem menuTogglePinned = menu.findItem(R.id.action_toggle_pinned);
1155
1156        if (conversation != null) {
1157            if (conversation.getMode() == Conversation.MODE_MULTI) {
1158                menuContactDetails.setVisible(false);
1159                menuInviteContact.setVisible(conversation.getMucOptions().canInvite());
1160                menuMucDetails.setTitle(
1161                        conversation.getMucOptions().isPrivateAndNonAnonymous()
1162                                ? R.string.action_muc_details
1163                                : R.string.channel_details);
1164                menuCall.setVisible(false);
1165                menuOngoingCall.setVisible(false);
1166            } else {
1167                final XmppConnectionService service =
1168                        activity == null ? null : activity.xmppConnectionService;
1169                final Optional<OngoingRtpSession> ongoingRtpSession =
1170                        service == null
1171                                ? Optional.absent()
1172                                : service.getJingleConnectionManager()
1173                                        .getOngoingRtpConnection(conversation.getContact());
1174                if (ongoingRtpSession.isPresent()) {
1175                    menuOngoingCall.setVisible(true);
1176                    menuCall.setVisible(false);
1177                } else {
1178                    menuOngoingCall.setVisible(false);
1179                    final RtpCapability.Capability rtpCapability =
1180                            RtpCapability.check(conversation.getContact());
1181                    final boolean cameraAvailable =
1182                            activity != null && activity.isCameraFeatureAvailable();
1183                    menuCall.setVisible(rtpCapability != RtpCapability.Capability.NONE);
1184                    menuVideoCall.setVisible(
1185                            rtpCapability == RtpCapability.Capability.VIDEO && cameraAvailable);
1186                }
1187                menuContactDetails.setVisible(!this.conversation.withSelf());
1188                menuMucDetails.setVisible(false);
1189                menuInviteContact.setVisible(
1190                        service != null
1191                                && service.findConferenceServer(conversation.getAccount()) != null);
1192            }
1193            if (conversation.isMuted()) {
1194                menuMute.setVisible(false);
1195            } else {
1196                menuUnmute.setVisible(false);
1197            }
1198            ConversationMenuConfigurator.configureAttachmentMenu(conversation, menu);
1199            ConversationMenuConfigurator.configureEncryptionMenu(conversation, menu);
1200            if (conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false)) {
1201                menuTogglePinned.setTitle(R.string.remove_from_favorites);
1202            } else {
1203                menuTogglePinned.setTitle(R.string.add_to_favorites);
1204            }
1205        }
1206        super.onCreateOptionsMenu(menu, menuInflater);
1207    }
1208
1209    @Override
1210    public View onCreateView(
1211            final LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
1212        this.binding =
1213                DataBindingUtil.inflate(inflater, R.layout.fragment_conversation, container, false);
1214        binding.getRoot().setOnClickListener(null); // TODO why the fuck did we do this?
1215
1216        binding.textinput.addTextChangedListener(
1217                new StylingHelper.MessageEditorStyler(binding.textinput));
1218
1219        binding.textinput.setOnEditorActionListener(mEditorActionListener);
1220        binding.textinput.setRichContentListener(new String[] {"image/*"}, mEditorContentListener);
1221
1222        binding.textSendButton.setOnClickListener(this.mSendButtonListener);
1223
1224        binding.scrollToBottomButton.setOnClickListener(this.mScrollButtonListener);
1225        binding.messagesView.setOnScrollListener(mOnScrollListener);
1226        binding.messagesView.setTranscriptMode(ListView.TRANSCRIPT_MODE_NORMAL);
1227        mediaPreviewAdapter = new MediaPreviewAdapter(this);
1228        binding.mediaPreview.setAdapter(mediaPreviewAdapter);
1229        messageListAdapter = new MessageAdapter((XmppActivity) getActivity(), this.messageList);
1230        messageListAdapter.setOnContactPictureClicked(this);
1231        messageListAdapter.setOnContactPictureLongClicked(this);
1232        binding.messagesView.setAdapter(messageListAdapter);
1233
1234        registerForContextMenu(binding.messagesView);
1235
1236        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
1237            this.binding.textinput.setCustomInsertionActionModeCallback(
1238                    new EditMessageActionModeCallback(this.binding.textinput));
1239        }
1240
1241        return binding.getRoot();
1242    }
1243
1244    @Override
1245    public void onDestroyView() {
1246        super.onDestroyView();
1247        Log.d(Config.LOGTAG, "ConversationFragment.onDestroyView()");
1248        messageListAdapter.setOnContactPictureClicked(null);
1249        messageListAdapter.setOnContactPictureLongClicked(null);
1250    }
1251
1252    private void quoteText(String text) {
1253        if (binding.textinput.isEnabled()) {
1254            binding.textinput.insertAsQuote(text);
1255            binding.textinput.requestFocus();
1256            InputMethodManager inputMethodManager =
1257                    (InputMethodManager)
1258                            getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
1259            if (inputMethodManager != null) {
1260                inputMethodManager.showSoftInput(
1261                        binding.textinput, InputMethodManager.SHOW_IMPLICIT);
1262            }
1263        }
1264    }
1265
1266    private void quoteMessage(Message message) {
1267        quoteText(MessageUtils.prepareQuote(message));
1268    }
1269
1270    @Override
1271    public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
1272        // This should cancel any remaining click events that would otherwise trigger links
1273        v.dispatchTouchEvent(MotionEvent.obtain(0, 0, MotionEvent.ACTION_CANCEL, 0f, 0f, 0));
1274        synchronized (this.messageList) {
1275            super.onCreateContextMenu(menu, v, menuInfo);
1276            AdapterView.AdapterContextMenuInfo acmi = (AdapterContextMenuInfo) menuInfo;
1277            this.selectedMessage = this.messageList.get(acmi.position);
1278            populateContextMenu(menu);
1279        }
1280    }
1281
1282    private void populateContextMenu(ContextMenu menu) {
1283        final Message m = this.selectedMessage;
1284        final Transferable t = m.getTransferable();
1285        Message relevantForCorrection = m;
1286        while (relevantForCorrection.mergeable(relevantForCorrection.next())) {
1287            relevantForCorrection = relevantForCorrection.next();
1288        }
1289        if (m.getType() != Message.TYPE_STATUS && m.getType() != Message.TYPE_RTP_SESSION) {
1290
1291            if (m.getEncryption() == Message.ENCRYPTION_AXOLOTL_NOT_FOR_THIS_DEVICE
1292                    || m.getEncryption() == Message.ENCRYPTION_AXOLOTL_FAILED) {
1293                return;
1294            }
1295
1296            if (m.getStatus() == Message.STATUS_RECEIVED
1297                    && t != null
1298                    && (t.getStatus() == Transferable.STATUS_CANCELLED
1299                            || t.getStatus() == Transferable.STATUS_FAILED)) {
1300                return;
1301            }
1302
1303            final boolean deleted = m.isDeleted();
1304            final boolean encrypted =
1305                    m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED
1306                            || m.getEncryption() == Message.ENCRYPTION_PGP;
1307            final boolean receiving =
1308                    m.getStatus() == Message.STATUS_RECEIVED
1309                            && (t instanceof JingleFileTransferConnection
1310                                    || t instanceof HttpDownloadConnection);
1311            activity.getMenuInflater().inflate(R.menu.message_context, menu);
1312            menu.setHeaderTitle(R.string.message_options);
1313            final MenuItem reportAndBlock = menu.findItem(R.id.action_report_and_block);
1314            MenuItem openWith = menu.findItem(R.id.open_with);
1315            MenuItem copyMessage = menu.findItem(R.id.copy_message);
1316            MenuItem copyLink = menu.findItem(R.id.copy_link);
1317            MenuItem quoteMessage = menu.findItem(R.id.quote_message);
1318            MenuItem retryDecryption = menu.findItem(R.id.retry_decryption);
1319            MenuItem correctMessage = menu.findItem(R.id.correct_message);
1320            MenuItem shareWith = menu.findItem(R.id.share_with);
1321            MenuItem sendAgain = menu.findItem(R.id.send_again);
1322            MenuItem copyUrl = menu.findItem(R.id.copy_url);
1323            MenuItem downloadFile = menu.findItem(R.id.download_file);
1324            MenuItem cancelTransmission = menu.findItem(R.id.cancel_transmission);
1325            MenuItem deleteFile = menu.findItem(R.id.delete_file);
1326            MenuItem showErrorMessage = menu.findItem(R.id.show_error_message);
1327            final boolean unInitiatedButKnownSize = MessageUtils.unInitiatedButKnownSize(m);
1328            final boolean showError =
1329                    m.getStatus() == Message.STATUS_SEND_FAILED
1330                            && m.getErrorMessage() != null
1331                            && !Message.ERROR_MESSAGE_CANCELLED.equals(m.getErrorMessage());
1332            final Conversational conversational = m.getConversation();
1333            if (m.getStatus() == Message.STATUS_RECEIVED && conversational instanceof Conversation c) {
1334                final XmppConnection connection = c.getAccount().getXmppConnection();
1335                if (c.isWithStranger()
1336                        && m.getServerMsgId() != null
1337                        && !c.isBlocked()
1338                        && connection != null
1339                        && connection.getFeatures().spamReporting()) {
1340                    reportAndBlock.setVisible(true);
1341                }
1342            }
1343            if (!m.isFileOrImage()
1344                    && !encrypted
1345                    && !m.isGeoUri()
1346                    && !m.treatAsDownloadable()
1347                    && !unInitiatedButKnownSize
1348                    && t == null) {
1349                copyMessage.setVisible(true);
1350                quoteMessage.setVisible(!showError && MessageUtils.prepareQuote(m).length() > 0);
1351                final String scheme = ShareUtil.getLinkScheme(m.getMergedBody());
1352                if ("xmpp".equals(scheme)) {
1353                    copyLink.setTitle(R.string.copy_jabber_id);
1354                    copyLink.setVisible(true);
1355                } else if (scheme != null) {
1356                    copyLink.setVisible(true);
1357                }
1358            }
1359            if (m.getEncryption() == Message.ENCRYPTION_DECRYPTION_FAILED && !deleted) {
1360                retryDecryption.setVisible(true);
1361            }
1362            if (!showError
1363                    && relevantForCorrection.getType() == Message.TYPE_TEXT
1364                    && !m.isGeoUri()
1365                    && relevantForCorrection.isLastCorrectableMessage()
1366                    && m.getConversation() instanceof Conversation) {
1367                correctMessage.setVisible(true);
1368            }
1369            if ((m.isFileOrImage() && !deleted && !receiving)
1370                    || (m.getType() == Message.TYPE_TEXT && !m.treatAsDownloadable())
1371                            && !unInitiatedButKnownSize
1372                            && t == null) {
1373                shareWith.setVisible(true);
1374            }
1375            if (m.getStatus() == Message.STATUS_SEND_FAILED) {
1376                sendAgain.setVisible(true);
1377            }
1378            if (m.hasFileOnRemoteHost()
1379                    || m.isGeoUri()
1380                    || m.treatAsDownloadable()
1381                    || unInitiatedButKnownSize
1382                    || t instanceof HttpDownloadConnection) {
1383                copyUrl.setVisible(true);
1384            }
1385            if (m.isFileOrImage() && deleted && m.hasFileOnRemoteHost()) {
1386                downloadFile.setVisible(true);
1387                downloadFile.setTitle(
1388                        activity.getString(
1389                                R.string.download_x_file,
1390                                UIHelper.getFileDescriptionString(activity, m)));
1391            }
1392            final boolean waitingOfferedSending =
1393                    m.getStatus() == Message.STATUS_WAITING
1394                            || m.getStatus() == Message.STATUS_UNSEND
1395                            || m.getStatus() == Message.STATUS_OFFERED;
1396            final boolean cancelable =
1397                    (t != null && !deleted) || waitingOfferedSending && m.needsUploading();
1398            if (cancelable) {
1399                cancelTransmission.setVisible(true);
1400            }
1401            if (m.isFileOrImage() && !deleted && !cancelable) {
1402                final String path = m.getRelativeFilePath();
1403                if (path == null
1404                        || !path.startsWith("/")
1405                        || FileBackend.inConversationsDirectory(requireActivity(), path)) {
1406                    deleteFile.setVisible(true);
1407                    deleteFile.setTitle(
1408                            activity.getString(
1409                                    R.string.delete_x_file,
1410                                    UIHelper.getFileDescriptionString(activity, m)));
1411                }
1412            }
1413            if (showError) {
1414                showErrorMessage.setVisible(true);
1415            }
1416            final String mime = m.isFileOrImage() ? m.getMimeType() : null;
1417            if ((m.isGeoUri() && GeoHelper.openInOsmAnd(getActivity(), m))
1418                    || (mime != null && mime.startsWith("audio/"))) {
1419                openWith.setVisible(true);
1420            }
1421        }
1422    }
1423
1424    @Override
1425    public boolean onContextItemSelected(MenuItem item) {
1426        switch (item.getItemId()) {
1427            case R.id.share_with:
1428                ShareUtil.share(activity, selectedMessage);
1429                return true;
1430            case R.id.correct_message:
1431                correctMessage(selectedMessage);
1432                return true;
1433            case R.id.copy_message:
1434                ShareUtil.copyToClipboard(activity, selectedMessage);
1435                return true;
1436            case R.id.copy_link:
1437                ShareUtil.copyLinkToClipboard(activity, selectedMessage);
1438                return true;
1439            case R.id.quote_message:
1440                quoteMessage(selectedMessage);
1441                return true;
1442            case R.id.send_again:
1443                resendMessage(selectedMessage);
1444                return true;
1445            case R.id.copy_url:
1446                ShareUtil.copyUrlToClipboard(activity, selectedMessage);
1447                return true;
1448            case R.id.download_file:
1449                startDownloadable(selectedMessage);
1450                return true;
1451            case R.id.cancel_transmission:
1452                cancelTransmission(selectedMessage);
1453                return true;
1454            case R.id.retry_decryption:
1455                retryDecryption(selectedMessage);
1456                return true;
1457            case R.id.delete_file:
1458                deleteFile(selectedMessage);
1459                return true;
1460            case R.id.show_error_message:
1461                showErrorMessage(selectedMessage);
1462                return true;
1463            case R.id.open_with:
1464                openWith(selectedMessage);
1465                return true;
1466            case R.id.action_report_and_block:
1467                reportMessage(selectedMessage);
1468                return true;
1469            default:
1470                return super.onContextItemSelected(item);
1471        }
1472    }
1473
1474    @Override
1475    public boolean onOptionsItemSelected(final MenuItem item) {
1476        if (MenuDoubleTabUtil.shouldIgnoreTap()) {
1477            return false;
1478        } else if (conversation == null) {
1479            return super.onOptionsItemSelected(item);
1480        }
1481        switch (item.getItemId()) {
1482            case R.id.encryption_choice_axolotl:
1483            case R.id.encryption_choice_pgp:
1484            case R.id.encryption_choice_none:
1485                handleEncryptionSelection(item);
1486                break;
1487            case R.id.attach_choose_picture:
1488            case R.id.attach_take_picture:
1489            case R.id.attach_record_video:
1490            case R.id.attach_choose_file:
1491            case R.id.attach_record_voice:
1492            case R.id.attach_location:
1493                handleAttachmentSelection(item);
1494                break;
1495            case R.id.action_search:
1496                startSearch();
1497                break;
1498            case R.id.action_archive:
1499                activity.xmppConnectionService.archiveConversation(conversation);
1500                break;
1501            case R.id.action_contact_details:
1502                activity.switchToContactDetails(conversation.getContact());
1503                break;
1504            case R.id.action_muc_details:
1505                ConferenceDetailsActivity.open(getActivity(), conversation);
1506                break;
1507            case R.id.action_invite:
1508                startActivityForResult(
1509                        ChooseContactActivity.create(activity, conversation),
1510                        REQUEST_INVITE_TO_CONVERSATION);
1511                break;
1512            case R.id.action_clear_history:
1513                clearHistoryDialog(conversation);
1514                break;
1515            case R.id.action_mute:
1516                muteConversationDialog(conversation);
1517                break;
1518            case R.id.action_unmute:
1519                unMuteConversation(conversation);
1520                break;
1521            case R.id.action_block:
1522            case R.id.action_unblock:
1523                final Activity activity = getActivity();
1524                if (activity instanceof XmppActivity) {
1525                    BlockContactDialog.show((XmppActivity) activity, conversation);
1526                }
1527                break;
1528            case R.id.action_audio_call:
1529                checkPermissionAndTriggerAudioCall();
1530                break;
1531            case R.id.action_video_call:
1532                checkPermissionAndTriggerVideoCall();
1533                break;
1534            case R.id.action_ongoing_call:
1535                returnToOngoingCall();
1536                break;
1537            case R.id.action_toggle_pinned:
1538                togglePinned();
1539                break;
1540            default:
1541                break;
1542        }
1543        return super.onOptionsItemSelected(item);
1544    }
1545
1546    private void startSearch() {
1547        final Intent intent = new Intent(getActivity(), SearchActivity.class);
1548        intent.putExtra(SearchActivity.EXTRA_CONVERSATION_UUID, conversation.getUuid());
1549        startActivity(intent);
1550    }
1551
1552    private void returnToOngoingCall() {
1553        final Optional<OngoingRtpSession> ongoingRtpSession =
1554                activity.xmppConnectionService
1555                        .getJingleConnectionManager()
1556                        .getOngoingRtpConnection(conversation.getContact());
1557        if (ongoingRtpSession.isPresent()) {
1558            final OngoingRtpSession id = ongoingRtpSession.get();
1559            final Intent intent = new Intent(getActivity(), RtpSessionActivity.class);
1560            intent.setAction(Intent.ACTION_VIEW);
1561            intent.putExtra(
1562                    RtpSessionActivity.EXTRA_ACCOUNT,
1563                    id.getAccount().getJid().asBareJid().toEscapedString());
1564            intent.putExtra(RtpSessionActivity.EXTRA_WITH, id.getWith().toEscapedString());
1565            if (id instanceof AbstractJingleConnection) {
1566                intent.putExtra(RtpSessionActivity.EXTRA_SESSION_ID, id.getSessionId());
1567                startActivity(intent);
1568            } else if (id instanceof JingleConnectionManager.RtpSessionProposal proposal) {
1569                if (Media.audioOnly(proposal.media)) {
1570                    intent.putExtra(
1571                            RtpSessionActivity.EXTRA_LAST_ACTION,
1572                            RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1573                } else {
1574                    intent.putExtra(
1575                            RtpSessionActivity.EXTRA_LAST_ACTION,
1576                            RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1577                }
1578                intent.putExtra(RtpSessionActivity.EXTRA_PROPOSED_SESSION_ID, proposal.sessionId);
1579                startActivity(intent);
1580            }
1581        }
1582    }
1583
1584    private void togglePinned() {
1585        final boolean pinned =
1586                conversation.getBooleanAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, false);
1587        conversation.setAttribute(Conversation.ATTRIBUTE_PINNED_ON_TOP, !pinned);
1588        activity.xmppConnectionService.updateConversation(conversation);
1589        activity.invalidateOptionsMenu();
1590    }
1591
1592    private void checkPermissionAndTriggerAudioCall() {
1593        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1594            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1595            return;
1596        }
1597        final List<String> permissions;
1598        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1599            permissions =
1600                    Arrays.asList(
1601                            Manifest.permission.RECORD_AUDIO,
1602                            Manifest.permission.BLUETOOTH_CONNECT);
1603        } else {
1604            permissions = Collections.singletonList(Manifest.permission.RECORD_AUDIO);
1605        }
1606        if (hasPermissions(REQUEST_START_AUDIO_CALL, permissions)) {
1607            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1608        }
1609    }
1610
1611    private void checkPermissionAndTriggerVideoCall() {
1612        if (activity.mUseTor || conversation.getAccount().isOnion()) {
1613            Toast.makeText(activity, R.string.disable_tor_to_make_call, Toast.LENGTH_SHORT).show();
1614            return;
1615        }
1616        final List<String> permissions;
1617        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
1618            permissions =
1619                    Arrays.asList(
1620                            Manifest.permission.RECORD_AUDIO,
1621                            Manifest.permission.CAMERA,
1622                            Manifest.permission.BLUETOOTH_CONNECT);
1623        } else {
1624            permissions =
1625                    Arrays.asList(Manifest.permission.RECORD_AUDIO, Manifest.permission.CAMERA);
1626        }
1627        if (hasPermissions(REQUEST_START_VIDEO_CALL, permissions)) {
1628            triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1629        }
1630    }
1631
1632    private void triggerRtpSession(final String action) {
1633        if (activity.xmppConnectionService.getJingleConnectionManager().isBusy()) {
1634            Toast.makeText(getActivity(), R.string.only_one_call_at_a_time, Toast.LENGTH_LONG)
1635                    .show();
1636            return;
1637        }
1638        final Account account = conversation.getAccount();
1639        if (account.setOption(Account.OPTION_SOFT_DISABLED, false)) {
1640            activity.xmppConnectionService.updateAccount(account);
1641        }
1642        final Contact contact = conversation.getContact();
1643        if (Config.USE_JINGLE_MESSAGE_INIT && RtpCapability.jmiSupport(contact)) {
1644            triggerRtpSession(contact.getAccount(), contact.getJid().asBareJid(), action);
1645        } else {
1646            final RtpCapability.Capability capability;
1647            if (action.equals(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL)) {
1648                capability = RtpCapability.Capability.VIDEO;
1649            } else {
1650                capability = RtpCapability.Capability.AUDIO;
1651            }
1652            PresenceSelector.selectFullJidForDirectRtpConnection(
1653                    activity,
1654                    contact,
1655                    capability,
1656                    fullJid -> {
1657                        triggerRtpSession(contact.getAccount(), fullJid, action);
1658                    });
1659        }
1660    }
1661
1662    private void triggerRtpSession(final Account account, final Jid with, final String action) {
1663        CallIntegrationConnectionService.placeCall(activity.xmppConnectionService, account,with,RtpSessionActivity.actionToMedia(action));
1664    }
1665
1666    private void handleAttachmentSelection(MenuItem item) {
1667        switch (item.getItemId()) {
1668            case R.id.attach_choose_picture:
1669                attachFile(ATTACHMENT_CHOICE_CHOOSE_IMAGE);
1670                break;
1671            case R.id.attach_take_picture:
1672                attachFile(ATTACHMENT_CHOICE_TAKE_PHOTO);
1673                break;
1674            case R.id.attach_record_video:
1675                attachFile(ATTACHMENT_CHOICE_RECORD_VIDEO);
1676                break;
1677            case R.id.attach_choose_file:
1678                attachFile(ATTACHMENT_CHOICE_CHOOSE_FILE);
1679                break;
1680            case R.id.attach_record_voice:
1681                attachFile(ATTACHMENT_CHOICE_RECORD_VOICE);
1682                break;
1683            case R.id.attach_location:
1684                attachFile(ATTACHMENT_CHOICE_LOCATION);
1685                break;
1686        }
1687    }
1688
1689    private void handleEncryptionSelection(MenuItem item) {
1690        if (conversation == null) {
1691            return;
1692        }
1693        final boolean updated;
1694        switch (item.getItemId()) {
1695            case R.id.encryption_choice_none:
1696                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1697                item.setChecked(true);
1698                break;
1699            case R.id.encryption_choice_pgp:
1700                if (activity.hasPgp()) {
1701                    if (conversation.getAccount().getPgpSignature() != null) {
1702                        updated = conversation.setNextEncryption(Message.ENCRYPTION_PGP);
1703                        item.setChecked(true);
1704                    } else {
1705                        updated = false;
1706                        activity.announcePgp(
1707                                conversation.getAccount(),
1708                                conversation,
1709                                null,
1710                                activity.onOpenPGPKeyPublished);
1711                    }
1712                } else {
1713                    activity.showInstallPgpDialog();
1714                    updated = false;
1715                }
1716                break;
1717            case R.id.encryption_choice_axolotl:
1718                Log.d(
1719                        Config.LOGTAG,
1720                        AxolotlService.getLogprefix(conversation.getAccount())
1721                                + "Enabled axolotl for Contact "
1722                                + conversation.getContact().getJid());
1723                updated = conversation.setNextEncryption(Message.ENCRYPTION_AXOLOTL);
1724                item.setChecked(true);
1725                break;
1726            default:
1727                updated = conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1728                break;
1729        }
1730        if (updated) {
1731            activity.xmppConnectionService.updateConversation(conversation);
1732        }
1733        updateChatMsgHint();
1734        getActivity().invalidateOptionsMenu();
1735        activity.refreshUi();
1736    }
1737
1738    public void attachFile(final int attachmentChoice) {
1739        attachFile(attachmentChoice, true);
1740    }
1741
1742    public void attachFile(final int attachmentChoice, final boolean updateRecentlyUsed) {
1743        if (attachmentChoice == ATTACHMENT_CHOICE_RECORD_VOICE) {
1744            if (!hasPermissions(
1745                    attachmentChoice,
1746                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1747                    Manifest.permission.RECORD_AUDIO)) {
1748                return;
1749            }
1750        } else if (attachmentChoice == ATTACHMENT_CHOICE_TAKE_PHOTO
1751                || attachmentChoice == ATTACHMENT_CHOICE_RECORD_VIDEO) {
1752            if (!hasPermissions(
1753                    attachmentChoice,
1754                    Manifest.permission.WRITE_EXTERNAL_STORAGE,
1755                    Manifest.permission.CAMERA)) {
1756                return;
1757            }
1758        } else if (attachmentChoice != ATTACHMENT_CHOICE_LOCATION) {
1759            if (!hasPermissions(attachmentChoice, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1760                return;
1761            }
1762        }
1763        if (updateRecentlyUsed) {
1764            storeRecentlyUsedQuickAction(attachmentChoice);
1765        }
1766        final int encryption = conversation.getNextEncryption();
1767        final int mode = conversation.getMode();
1768        if (encryption == Message.ENCRYPTION_PGP) {
1769            if (activity.hasPgp()) {
1770                if (mode == Conversation.MODE_SINGLE
1771                        && conversation.getContact().getPgpKeyId() != 0) {
1772                    activity.xmppConnectionService
1773                            .getPgpEngine()
1774                            .hasKey(
1775                                    conversation.getContact(),
1776                                    new UiCallback<Contact>() {
1777
1778                                        @Override
1779                                        public void userInputRequired(
1780                                                PendingIntent pi, Contact contact) {
1781                                            startPendingIntent(pi, attachmentChoice);
1782                                        }
1783
1784                                        @Override
1785                                        public void success(Contact contact) {
1786                                            invokeAttachFileIntent(attachmentChoice);
1787                                        }
1788
1789                                        @Override
1790                                        public void error(int error, Contact contact) {
1791                                            activity.replaceToast(getString(error));
1792                                        }
1793                                    });
1794                } else if (mode == Conversation.MODE_MULTI
1795                        && conversation.getMucOptions().pgpKeysInUse()) {
1796                    if (!conversation.getMucOptions().everybodyHasKeys()) {
1797                        Toast warning =
1798                                Toast.makeText(
1799                                        getActivity(),
1800                                        R.string.missing_public_keys,
1801                                        Toast.LENGTH_LONG);
1802                        warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
1803                        warning.show();
1804                    }
1805                    invokeAttachFileIntent(attachmentChoice);
1806                } else {
1807                    showNoPGPKeyDialog(
1808                            false,
1809                            (dialog, which) -> {
1810                                conversation.setNextEncryption(Message.ENCRYPTION_NONE);
1811                                activity.xmppConnectionService.updateConversation(conversation);
1812                                invokeAttachFileIntent(attachmentChoice);
1813                            });
1814                }
1815            } else {
1816                activity.showInstallPgpDialog();
1817            }
1818        } else {
1819            invokeAttachFileIntent(attachmentChoice);
1820        }
1821    }
1822
1823    private void storeRecentlyUsedQuickAction(final int attachmentChoice) {
1824        try {
1825            activity.getPreferences()
1826                    .edit()
1827                    .putString(
1828                            RECENTLY_USED_QUICK_ACTION,
1829                            SendButtonAction.of(attachmentChoice).toString())
1830                    .apply();
1831        } catch (IllegalArgumentException e) {
1832            // just do not save
1833        }
1834    }
1835
1836    @Override
1837    public void onRequestPermissionsResult(
1838            int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
1839        final PermissionUtils.PermissionResult permissionResult =
1840                PermissionUtils.removeBluetoothConnect(permissions, grantResults);
1841        if (grantResults.length > 0) {
1842            if (allGranted(permissionResult.grantResults)) {
1843                switch (requestCode) {
1844                    case REQUEST_START_DOWNLOAD:
1845                        if (this.mPendingDownloadableMessage != null) {
1846                            startDownloadable(this.mPendingDownloadableMessage);
1847                        }
1848                        break;
1849                    case REQUEST_ADD_EDITOR_CONTENT:
1850                        if (this.mPendingEditorContent != null) {
1851                            attachEditorContentToConversation(this.mPendingEditorContent);
1852                        }
1853                        break;
1854                    case REQUEST_COMMIT_ATTACHMENTS:
1855                        commitAttachments();
1856                        break;
1857                    case REQUEST_START_AUDIO_CALL:
1858                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VOICE_CALL);
1859                        break;
1860                    case REQUEST_START_VIDEO_CALL:
1861                        triggerRtpSession(RtpSessionActivity.ACTION_MAKE_VIDEO_CALL);
1862                        break;
1863                    default:
1864                        attachFile(requestCode);
1865                        break;
1866                }
1867            } else {
1868                @StringRes int res;
1869                String firstDenied =
1870                        getFirstDenied(permissionResult.grantResults, permissionResult.permissions);
1871                if (Manifest.permission.RECORD_AUDIO.equals(firstDenied)) {
1872                    res = R.string.no_microphone_permission;
1873                } else if (Manifest.permission.CAMERA.equals(firstDenied)) {
1874                    res = R.string.no_camera_permission;
1875                } else {
1876                    res = R.string.no_storage_permission;
1877                }
1878                Toast.makeText(
1879                                getActivity(),
1880                                getString(res, getString(R.string.app_name)),
1881                                Toast.LENGTH_SHORT)
1882                        .show();
1883            }
1884        }
1885        if (writeGranted(grantResults, permissions)) {
1886            if (activity != null && activity.xmppConnectionService != null) {
1887                activity.xmppConnectionService.getBitmapCache().evictAll();
1888                activity.xmppConnectionService.restartFileObserver();
1889            }
1890            refresh();
1891        }
1892        if (cameraGranted(grantResults, permissions) || audioGranted(grantResults, permissions)) {
1893            XmppConnectionService.toggleForegroundService(activity);
1894        }
1895    }
1896
1897    public void startDownloadable(Message message) {
1898        if (!hasPermissions(REQUEST_START_DOWNLOAD, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1899            this.mPendingDownloadableMessage = message;
1900            return;
1901        }
1902        Transferable transferable = message.getTransferable();
1903        if (transferable != null) {
1904            if (transferable instanceof TransferablePlaceholder && message.hasFileOnRemoteHost()) {
1905                createNewConnection(message);
1906                return;
1907            }
1908            if (!transferable.start()) {
1909                Log.d(Config.LOGTAG, "type: " + transferable.getClass().getName());
1910                Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1911                        .show();
1912            }
1913        } else if (message.treatAsDownloadable()
1914                || message.hasFileOnRemoteHost()
1915                || MessageUtils.unInitiatedButKnownSize(message)) {
1916            createNewConnection(message);
1917        } else {
1918            Log.d(
1919                    Config.LOGTAG,
1920                    message.getConversation().getAccount() + ": unable to start downloadable");
1921        }
1922    }
1923
1924    private void createNewConnection(final Message message) {
1925        if (!activity.xmppConnectionService.hasInternetConnection()) {
1926            Toast.makeText(getActivity(), R.string.not_connected_try_again, Toast.LENGTH_SHORT)
1927                    .show();
1928            return;
1929        }
1930        activity.xmppConnectionService
1931                .getHttpConnectionManager()
1932                .createNewDownloadConnection(message, true);
1933    }
1934
1935    @SuppressLint("InflateParams")
1936    protected void clearHistoryDialog(final Conversation conversation) {
1937        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
1938        builder.setTitle(R.string.clear_conversation_history);
1939        final View dialogView =
1940                requireActivity().getLayoutInflater().inflate(R.layout.dialog_clear_history, null);
1941        final CheckBox endConversationCheckBox =
1942                dialogView.findViewById(R.id.end_conversation_checkbox);
1943        builder.setView(dialogView);
1944        builder.setNegativeButton(getString(R.string.cancel), null);
1945        builder.setPositiveButton(
1946                getString(R.string.confirm),
1947                (dialog, which) -> {
1948                    this.activity.xmppConnectionService.clearConversationHistory(conversation);
1949                    if (endConversationCheckBox.isChecked()) {
1950                        this.activity.xmppConnectionService.archiveConversation(conversation);
1951                        this.activity.onConversationArchived(conversation);
1952                    } else {
1953                        activity.onConversationsListItemUpdated();
1954                        refresh();
1955                    }
1956                });
1957        builder.create().show();
1958    }
1959
1960    protected void muteConversationDialog(final Conversation conversation) {
1961        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
1962        builder.setTitle(R.string.disable_notifications);
1963        final int[] durations = getResources().getIntArray(R.array.mute_options_durations);
1964        final CharSequence[] labels = new CharSequence[durations.length];
1965        for (int i = 0; i < durations.length; ++i) {
1966            if (durations[i] == -1) {
1967                labels[i] = getString(R.string.until_further_notice);
1968            } else {
1969                labels[i] = TimeFrameUtils.resolve(activity, 1000L * durations[i]);
1970            }
1971        }
1972        builder.setItems(
1973                labels,
1974                (dialog, which) -> {
1975                    final long till;
1976                    if (durations[which] == -1) {
1977                        till = Long.MAX_VALUE;
1978                    } else {
1979                        till = System.currentTimeMillis() + (durations[which] * 1000L);
1980                    }
1981                    conversation.setMutedTill(till);
1982                    activity.xmppConnectionService.updateConversation(conversation);
1983                    activity.onConversationsListItemUpdated();
1984                    refresh();
1985                    requireActivity().invalidateOptionsMenu();
1986                });
1987        builder.create().show();
1988    }
1989
1990    private boolean hasPermissions(int requestCode, List<String> permissions) {
1991        final List<String> missingPermissions = new ArrayList<>();
1992        for (String permission : permissions) {
1993            if ((Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU || Config.ONLY_INTERNAL_STORAGE) && permission.equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
1994                continue;
1995            }
1996            if (activity.checkSelfPermission(permission) != PackageManager.PERMISSION_GRANTED) {
1997                missingPermissions.add(permission);
1998            }
1999        }
2000        if (missingPermissions.size() == 0) {
2001            return true;
2002        } else {
2003            requestPermissions(
2004                    missingPermissions.toArray(new String[0]),
2005                    requestCode);
2006            return false;
2007        }
2008    }
2009
2010    private boolean hasPermissions(int requestCode, String... permissions) {
2011        return hasPermissions(requestCode, ImmutableList.copyOf(permissions));
2012    }
2013
2014    public void unMuteConversation(final Conversation conversation) {
2015        conversation.setMutedTill(0);
2016        this.activity.xmppConnectionService.updateConversation(conversation);
2017        this.activity.onConversationsListItemUpdated();
2018        refresh();
2019        requireActivity().invalidateOptionsMenu();
2020    }
2021
2022    protected void invokeAttachFileIntent(final int attachmentChoice) {
2023        Intent intent = new Intent();
2024        boolean chooser = false;
2025        switch (attachmentChoice) {
2026            case ATTACHMENT_CHOICE_CHOOSE_IMAGE:
2027                intent.setAction(Intent.ACTION_GET_CONTENT);
2028                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2029                intent.setType("image/*");
2030                chooser = true;
2031                break;
2032            case ATTACHMENT_CHOICE_RECORD_VIDEO:
2033                intent.setAction(MediaStore.ACTION_VIDEO_CAPTURE);
2034                break;
2035            case ATTACHMENT_CHOICE_TAKE_PHOTO:
2036                final Uri uri = activity.xmppConnectionService.getFileBackend().getTakePhotoUri();
2037                pendingTakePhotoUri.push(uri);
2038                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
2039                intent.addFlags(Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
2040                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
2041                intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);
2042                break;
2043            case ATTACHMENT_CHOICE_CHOOSE_FILE:
2044                chooser = true;
2045                intent.setType("*/*");
2046                intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
2047                intent.addCategory(Intent.CATEGORY_OPENABLE);
2048                intent.setAction(Intent.ACTION_GET_CONTENT);
2049                break;
2050            case ATTACHMENT_CHOICE_RECORD_VOICE:
2051                intent = new Intent(getActivity(), RecordingActivity.class);
2052                break;
2053            case ATTACHMENT_CHOICE_LOCATION:
2054                intent = GeoHelper.getFetchIntent(activity);
2055                break;
2056        }
2057        final Context context = getActivity();
2058        if (context == null) {
2059            return;
2060        }
2061        try {
2062            if (chooser) {
2063                startActivityForResult(
2064                        Intent.createChooser(intent, getString(R.string.perform_action_with)),
2065                        attachmentChoice);
2066            } else {
2067                startActivityForResult(intent, attachmentChoice);
2068            }
2069        } catch (final ActivityNotFoundException e) {
2070            Toast.makeText(context, R.string.no_application_found, Toast.LENGTH_LONG).show();
2071        }
2072    }
2073
2074    @Override
2075    public void onResume() {
2076        super.onResume();
2077        binding.messagesView.post(this::fireReadEvent);
2078    }
2079
2080    private void fireReadEvent() {
2081        if (activity != null && this.conversation != null) {
2082            String uuid = getLastVisibleMessageUuid();
2083            if (uuid != null) {
2084                activity.onConversationRead(this.conversation, uuid);
2085            }
2086        }
2087    }
2088
2089    private String getLastVisibleMessageUuid() {
2090        if (binding == null) {
2091            return null;
2092        }
2093        synchronized (this.messageList) {
2094            int pos = binding.messagesView.getLastVisiblePosition();
2095            if (pos >= 0) {
2096                Message message = null;
2097                for (int i = pos; i >= 0; --i) {
2098                    try {
2099                        message = (Message) binding.messagesView.getItemAtPosition(i);
2100                    } catch (IndexOutOfBoundsException e) {
2101                        // should not happen if we synchronize properly. however if that fails we
2102                        // just gonna try item -1
2103                        continue;
2104                    }
2105                    if (message.getType() != Message.TYPE_STATUS) {
2106                        break;
2107                    }
2108                }
2109                if (message != null) {
2110                    while (message.next() != null && message.next().wasMergedIntoPrevious()) {
2111                        message = message.next();
2112                    }
2113                    return message.getUuid();
2114                }
2115            }
2116        }
2117        return null;
2118    }
2119
2120    private void openWith(final Message message) {
2121        if (message.isGeoUri()) {
2122            GeoHelper.view(getActivity(), message);
2123        } else {
2124            final DownloadableFile file =
2125                    activity.xmppConnectionService.getFileBackend().getFile(message);
2126            ViewUtil.view(activity, file);
2127        }
2128    }
2129
2130    private void reportMessage(final Message message) {
2131        BlockContactDialog.show(activity, conversation.getContact(), message.getServerMsgId());
2132    }
2133
2134    private void showErrorMessage(final Message message) {
2135        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
2136        builder.setTitle(R.string.error_message);
2137        final String errorMessage = message.getErrorMessage();
2138        final String[] errorMessageParts =
2139                errorMessage == null ? new String[0] : errorMessage.split("\\u001f");
2140        final String displayError;
2141        if (errorMessageParts.length == 2) {
2142            displayError = errorMessageParts[1];
2143        } else {
2144            displayError = errorMessage;
2145        }
2146        builder.setMessage(displayError);
2147        builder.setNegativeButton(
2148                R.string.copy_to_clipboard,
2149                (dialog, which) -> {
2150                    activity.copyTextToClipboard(displayError, R.string.error_message);
2151                    Toast.makeText(
2152                                    activity,
2153                                    R.string.error_message_copied_to_clipboard,
2154                                    Toast.LENGTH_SHORT)
2155                            .show();
2156                });
2157        builder.setPositiveButton(R.string.confirm, null);
2158        builder.create().show();
2159    }
2160
2161    private void deleteFile(final Message message) {
2162        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
2163        builder.setNegativeButton(R.string.cancel, null);
2164        builder.setTitle(R.string.delete_file_dialog);
2165        builder.setMessage(R.string.delete_file_dialog_msg);
2166        builder.setPositiveButton(
2167                R.string.confirm,
2168                (dialog, which) -> {
2169                    if (activity.xmppConnectionService.getFileBackend().deleteFile(message)) {
2170                        message.setDeleted(true);
2171                        activity.xmppConnectionService.evictPreview(message.getUuid());
2172                        activity.xmppConnectionService.updateMessage(message, false);
2173                        activity.onConversationsListItemUpdated();
2174                        refresh();
2175                    }
2176                });
2177        builder.create().show();
2178    }
2179
2180    private void resendMessage(final Message message) {
2181        if (message.isFileOrImage()) {
2182            if (!(message.getConversation() instanceof Conversation)) {
2183                return;
2184            }
2185            final Conversation conversation = (Conversation) message.getConversation();
2186            final DownloadableFile file =
2187                    activity.xmppConnectionService.getFileBackend().getFile(message);
2188            if ((file.exists() && file.canRead()) || message.hasFileOnRemoteHost()) {
2189                final XmppConnection xmppConnection = conversation.getAccount().getXmppConnection();
2190                if (!message.hasFileOnRemoteHost()
2191                        && xmppConnection != null
2192                        && conversation.getMode() == Conversational.MODE_SINGLE
2193                        && !xmppConnection
2194                                .getFeatures()
2195                                .httpUpload(message.getFileParams().getSize())) {
2196                    activity.selectPresence(
2197                            conversation,
2198                            () -> {
2199                                message.setCounterpart(conversation.getNextCounterpart());
2200                                activity.xmppConnectionService.resendFailedMessages(message);
2201                                new Handler()
2202                                        .post(
2203                                                () -> {
2204                                                    int size = messageList.size();
2205                                                    this.binding.messagesView.setSelection(
2206                                                            size - 1);
2207                                                });
2208                            });
2209                    return;
2210                }
2211            } else if (!Compatibility.hasStoragePermission(getActivity())) {
2212                Toast.makeText(activity, R.string.no_storage_permission, Toast.LENGTH_SHORT).show();
2213                return;
2214            } else {
2215                Toast.makeText(activity, R.string.file_deleted, Toast.LENGTH_SHORT).show();
2216                message.setDeleted(true);
2217                activity.xmppConnectionService.updateMessage(message, false);
2218                activity.onConversationsListItemUpdated();
2219                refresh();
2220                return;
2221            }
2222        }
2223        activity.xmppConnectionService.resendFailedMessages(message);
2224        new Handler()
2225                .post(
2226                        () -> {
2227                            int size = messageList.size();
2228                            this.binding.messagesView.setSelection(size - 1);
2229                        });
2230    }
2231
2232    private void cancelTransmission(Message message) {
2233        Transferable transferable = message.getTransferable();
2234        if (transferable != null) {
2235            transferable.cancel();
2236        } else if (message.getStatus() != Message.STATUS_RECEIVED) {
2237            activity.xmppConnectionService.markMessage(
2238                    message, Message.STATUS_SEND_FAILED, Message.ERROR_MESSAGE_CANCELLED);
2239        }
2240    }
2241
2242    private void retryDecryption(Message message) {
2243        message.setEncryption(Message.ENCRYPTION_PGP);
2244        activity.onConversationsListItemUpdated();
2245        refresh();
2246        conversation.getAccount().getPgpDecryptionService().decrypt(message, false);
2247    }
2248
2249    public void privateMessageWith(final Jid counterpart) {
2250        if (conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
2251            activity.xmppConnectionService.sendChatState(conversation);
2252        }
2253        this.binding.textinput.setText("");
2254        this.conversation.setNextCounterpart(counterpart);
2255        updateChatMsgHint();
2256        updateSendButton();
2257        updateEditablity();
2258    }
2259
2260    private void correctMessage(Message message) {
2261        while (message.mergeable(message.next())) {
2262            message = message.next();
2263        }
2264        this.conversation.setCorrectingMessage(message);
2265        final Editable editable = binding.textinput.getText();
2266        this.conversation.setDraftMessage(editable.toString());
2267        this.binding.textinput.setText("");
2268        this.binding.textinput.append(message.getBody());
2269    }
2270
2271    private void highlightInConference(String nick) {
2272        final Editable editable = this.binding.textinput.getText();
2273        String oldString = editable.toString().trim();
2274        final int pos = this.binding.textinput.getSelectionStart();
2275        if (oldString.isEmpty() || pos == 0) {
2276            editable.insert(0, nick + ": ");
2277        } else {
2278            final char before = editable.charAt(pos - 1);
2279            final char after = editable.length() > pos ? editable.charAt(pos) : '\0';
2280            if (before == '\n') {
2281                editable.insert(pos, nick + ": ");
2282            } else {
2283                if (pos > 2 && editable.subSequence(pos - 2, pos).toString().equals(": ")) {
2284                    if (NickValidityChecker.check(
2285                            conversation,
2286                            Arrays.asList(
2287                                    editable.subSequence(0, pos - 2).toString().split(", ")))) {
2288                        editable.insert(pos - 2, ", " + nick);
2289                        return;
2290                    }
2291                }
2292                editable.insert(
2293                        pos,
2294                        (Character.isWhitespace(before) ? "" : " ")
2295                                + nick
2296                                + (Character.isWhitespace(after) ? "" : " "));
2297                if (Character.isWhitespace(after)) {
2298                    this.binding.textinput.setSelection(
2299                            this.binding.textinput.getSelectionStart() + 1);
2300                }
2301            }
2302        }
2303    }
2304
2305    @Override
2306    public void startActivityForResult(Intent intent, int requestCode) {
2307        final Activity activity = getActivity();
2308        if (activity instanceof ConversationsActivity) {
2309            ((ConversationsActivity) activity).clearPendingViewIntent();
2310        }
2311        super.startActivityForResult(intent, requestCode);
2312    }
2313
2314    @Override
2315    public void onSaveInstanceState(@NonNull Bundle outState) {
2316        super.onSaveInstanceState(outState);
2317        if (conversation != null) {
2318            outState.putString(STATE_CONVERSATION_UUID, conversation.getUuid());
2319            outState.putString(STATE_LAST_MESSAGE_UUID, lastMessageUuid);
2320            final Uri uri = pendingTakePhotoUri.peek();
2321            if (uri != null) {
2322                outState.putString(STATE_PHOTO_URI, uri.toString());
2323            }
2324            final ScrollState scrollState = getScrollPosition();
2325            if (scrollState != null) {
2326                outState.putParcelable(STATE_SCROLL_POSITION, scrollState);
2327            }
2328            final ArrayList<Attachment> attachments =
2329                    mediaPreviewAdapter == null
2330                            ? new ArrayList<>()
2331                            : mediaPreviewAdapter.getAttachments();
2332            if (attachments.size() > 0) {
2333                outState.putParcelableArrayList(STATE_MEDIA_PREVIEWS, attachments);
2334            }
2335        }
2336    }
2337
2338    @Override
2339    public void onActivityCreated(Bundle savedInstanceState) {
2340        super.onActivityCreated(savedInstanceState);
2341        if (savedInstanceState == null) {
2342            return;
2343        }
2344        String uuid = savedInstanceState.getString(STATE_CONVERSATION_UUID);
2345        ArrayList<Attachment> attachments =
2346                savedInstanceState.getParcelableArrayList(STATE_MEDIA_PREVIEWS);
2347        pendingLastMessageUuid.push(savedInstanceState.getString(STATE_LAST_MESSAGE_UUID, null));
2348        if (uuid != null) {
2349            QuickLoader.set(uuid);
2350            this.pendingConversationsUuid.push(uuid);
2351            if (attachments != null && attachments.size() > 0) {
2352                this.pendingMediaPreviews.push(attachments);
2353            }
2354            String takePhotoUri = savedInstanceState.getString(STATE_PHOTO_URI);
2355            if (takePhotoUri != null) {
2356                pendingTakePhotoUri.push(Uri.parse(takePhotoUri));
2357            }
2358            pendingScrollState.push(savedInstanceState.getParcelable(STATE_SCROLL_POSITION));
2359        }
2360    }
2361
2362    @Override
2363    public void onStart() {
2364        super.onStart();
2365        if (this.reInitRequiredOnStart && this.conversation != null) {
2366            final Bundle extras = pendingExtras.pop();
2367            reInit(this.conversation, extras != null);
2368            if (extras != null) {
2369                processExtras(extras);
2370            }
2371        } else if (conversation == null
2372                && activity != null
2373                && activity.xmppConnectionService != null) {
2374            final String uuid = pendingConversationsUuid.pop();
2375            Log.d(
2376                    Config.LOGTAG,
2377                    "ConversationFragment.onStart() - activity was bound but no conversation loaded. uuid="
2378                            + uuid);
2379            if (uuid != null) {
2380                findAndReInitByUuidOrArchive(uuid);
2381            }
2382        }
2383    }
2384
2385    @Override
2386    public void onStop() {
2387        super.onStop();
2388        final Activity activity = getActivity();
2389        messageListAdapter.unregisterListenerInAudioPlayer();
2390        if (activity == null || !activity.isChangingConfigurations()) {
2391            hideSoftKeyboard(activity);
2392            messageListAdapter.stopAudioPlayer();
2393        }
2394        if (this.conversation != null) {
2395            final String msg = this.binding.textinput.getText().toString();
2396            storeNextMessage(msg);
2397            updateChatState(this.conversation, msg);
2398            this.activity.xmppConnectionService.getNotificationService().setOpenConversation(null);
2399        }
2400        this.reInitRequiredOnStart = true;
2401    }
2402
2403    private void updateChatState(final Conversation conversation, final String msg) {
2404        ChatState state = msg.length() == 0 ? Config.DEFAULT_CHAT_STATE : ChatState.PAUSED;
2405        Account.State status = conversation.getAccount().getStatus();
2406        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(state)) {
2407            activity.xmppConnectionService.sendChatState(conversation);
2408        }
2409    }
2410
2411    private void saveMessageDraftStopAudioPlayer() {
2412        final Conversation previousConversation = this.conversation;
2413        if (this.activity == null || this.binding == null || previousConversation == null) {
2414            return;
2415        }
2416        Log.d(Config.LOGTAG, "ConversationFragment.saveMessageDraftStopAudioPlayer()");
2417        final String msg = this.binding.textinput.getText().toString();
2418        storeNextMessage(msg);
2419        updateChatState(this.conversation, msg);
2420        messageListAdapter.stopAudioPlayer();
2421        mediaPreviewAdapter.clearPreviews();
2422        toggleInputMethod();
2423    }
2424
2425    public void reInit(final Conversation conversation, final Bundle extras) {
2426        QuickLoader.set(conversation.getUuid());
2427        final boolean changedConversation = this.conversation != conversation;
2428        if (changedConversation) {
2429            this.saveMessageDraftStopAudioPlayer();
2430        }
2431        this.clearPending();
2432        if (this.reInit(conversation, extras != null)) {
2433            if (extras != null) {
2434                processExtras(extras);
2435            }
2436            this.reInitRequiredOnStart = false;
2437        } else {
2438            this.reInitRequiredOnStart = true;
2439            pendingExtras.push(extras);
2440        }
2441        resetUnreadMessagesCount();
2442    }
2443
2444    private void reInit(Conversation conversation) {
2445        reInit(conversation, false);
2446    }
2447
2448    private boolean reInit(final Conversation conversation, final boolean hasExtras) {
2449        if (conversation == null) {
2450            return false;
2451        }
2452        this.conversation = conversation;
2453        // once we set the conversation all is good and it will automatically do the right thing in
2454        // onStart()
2455        if (this.activity == null || this.binding == null) {
2456            return false;
2457        }
2458
2459        if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2460            activity.onConversationArchived(this.conversation);
2461            return false;
2462        }
2463
2464        stopScrolling();
2465        Log.d(Config.LOGTAG, "reInit(hasExtras=" + hasExtras + ")");
2466
2467        if (this.conversation.isRead() && hasExtras) {
2468            Log.d(Config.LOGTAG, "trimming conversation");
2469            this.conversation.trim();
2470        }
2471
2472        setupIme();
2473
2474        final boolean scrolledToBottomAndNoPending =
2475                this.scrolledToBottom() && pendingScrollState.peek() == null;
2476
2477        this.binding.textSendButton.setContentDescription(
2478                activity.getString(R.string.send_message_to_x, conversation.getName()));
2479        this.binding.textinput.setKeyboardListener(null);
2480        final boolean participating =
2481                conversation.getMode() == Conversational.MODE_SINGLE
2482                        || conversation.getMucOptions().participating();
2483        if (participating) {
2484            this.binding.textinput.setText(this.conversation.getNextMessage());
2485            this.binding.textinput.setSelection(this.binding.textinput.length());
2486        } else {
2487            this.binding.textinput.setText(MessageUtils.EMPTY_STRING);
2488        }
2489        this.binding.textinput.setKeyboardListener(this);
2490        messageListAdapter.updatePreferences();
2491        refresh(false);
2492        activity.invalidateOptionsMenu();
2493        this.conversation.messagesLoaded.set(true);
2494        Log.d(Config.LOGTAG, "scrolledToBottomAndNoPending=" + scrolledToBottomAndNoPending);
2495
2496        if (hasExtras || scrolledToBottomAndNoPending) {
2497            resetUnreadMessagesCount();
2498            synchronized (this.messageList) {
2499                Log.d(Config.LOGTAG, "jump to first unread message");
2500                final Message first = conversation.getFirstUnreadMessage();
2501                final int bottom = Math.max(0, this.messageList.size() - 1);
2502                final int pos;
2503                final boolean jumpToBottom;
2504                if (first == null) {
2505                    pos = bottom;
2506                    jumpToBottom = true;
2507                } else {
2508                    int i = getIndexOf(first.getUuid(), this.messageList);
2509                    pos = i < 0 ? bottom : i;
2510                    jumpToBottom = false;
2511                }
2512                setSelection(pos, jumpToBottom);
2513            }
2514        }
2515
2516        this.binding.messagesView.post(this::fireReadEvent);
2517        // TODO if we only do this when this fragment is running on main it won't *bing* in tablet
2518        // layout which might be unnecessary since we can *see* it
2519        activity.xmppConnectionService
2520                .getNotificationService()
2521                .setOpenConversation(this.conversation);
2522        return true;
2523    }
2524
2525    private void resetUnreadMessagesCount() {
2526        lastMessageUuid = null;
2527        hideUnreadMessagesCount();
2528    }
2529
2530    private void hideUnreadMessagesCount() {
2531        if (this.binding == null) {
2532            return;
2533        }
2534        this.binding.scrollToBottomButton.setEnabled(false);
2535        this.binding.scrollToBottomButton.hide();
2536        this.binding.unreadCountCustomView.setVisibility(View.GONE);
2537    }
2538
2539    private void setSelection(int pos, boolean jumpToBottom) {
2540        ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom);
2541        this.binding.messagesView.post(
2542                () -> ListViewUtils.setSelection(this.binding.messagesView, pos, jumpToBottom));
2543        this.binding.messagesView.post(this::fireReadEvent);
2544    }
2545
2546    private boolean scrolledToBottom() {
2547        return this.binding != null && scrolledToBottom(this.binding.messagesView);
2548    }
2549
2550    private void processExtras(final Bundle extras) {
2551        final String downloadUuid = extras.getString(ConversationsActivity.EXTRA_DOWNLOAD_UUID);
2552        final String text = extras.getString(Intent.EXTRA_TEXT);
2553        final String nick = extras.getString(ConversationsActivity.EXTRA_NICK);
2554        final String postInitAction =
2555                extras.getString(ConversationsActivity.EXTRA_POST_INIT_ACTION);
2556        final boolean asQuote = extras.getBoolean(ConversationsActivity.EXTRA_AS_QUOTE);
2557        final boolean pm = extras.getBoolean(ConversationsActivity.EXTRA_IS_PRIVATE_MESSAGE, false);
2558        final boolean doNotAppend =
2559                extras.getBoolean(ConversationsActivity.EXTRA_DO_NOT_APPEND, false);
2560        final String type = extras.getString(ConversationsActivity.EXTRA_TYPE);
2561        final List<Uri> uris = extractUris(extras);
2562        if (uris != null && uris.size() > 0) {
2563            if (uris.size() == 1 && "geo".equals(uris.get(0).getScheme())) {
2564                mediaPreviewAdapter.addMediaPreviews(
2565                        Attachment.of(getActivity(), uris.get(0), Attachment.Type.LOCATION));
2566            } else {
2567                final List<Uri> cleanedUris = cleanUris(new ArrayList<>(uris));
2568                mediaPreviewAdapter.addMediaPreviews(
2569                        Attachment.of(getActivity(), cleanedUris, type));
2570            }
2571            toggleInputMethod();
2572            return;
2573        }
2574        if (nick != null) {
2575            if (pm) {
2576                Jid jid = conversation.getJid();
2577                try {
2578                    Jid next = Jid.of(jid.getLocal(), jid.getDomain(), nick);
2579                    privateMessageWith(next);
2580                } catch (final IllegalArgumentException ignored) {
2581                    // do nothing
2582                }
2583            } else {
2584                final MucOptions mucOptions = conversation.getMucOptions();
2585                if (mucOptions.participating() || conversation.getNextCounterpart() != null) {
2586                    highlightInConference(nick);
2587                }
2588            }
2589        } else {
2590            if (text != null && GeoHelper.GEO_URI.matcher(text).matches()) {
2591                mediaPreviewAdapter.addMediaPreviews(
2592                        Attachment.of(getActivity(), Uri.parse(text), Attachment.Type.LOCATION));
2593                toggleInputMethod();
2594                return;
2595            } else if (text != null && asQuote) {
2596                quoteText(text);
2597            } else {
2598                appendText(text, doNotAppend);
2599            }
2600        }
2601        if (ConversationsActivity.POST_ACTION_RECORD_VOICE.equals(postInitAction)) {
2602            attachFile(ATTACHMENT_CHOICE_RECORD_VOICE, false);
2603            return;
2604        }
2605        final Message message =
2606                downloadUuid == null ? null : conversation.findMessageWithFileAndUuid(downloadUuid);
2607        if (message != null) {
2608            startDownloadable(message);
2609        }
2610    }
2611
2612    private List<Uri> extractUris(final Bundle extras) {
2613        final List<Uri> uris = extras.getParcelableArrayList(Intent.EXTRA_STREAM);
2614        if (uris != null) {
2615            return uris;
2616        }
2617        final Uri uri = extras.getParcelable(Intent.EXTRA_STREAM);
2618        if (uri != null) {
2619            return Collections.singletonList(uri);
2620        } else {
2621            return null;
2622        }
2623    }
2624
2625    private List<Uri> cleanUris(final List<Uri> uris) {
2626        final Iterator<Uri> iterator = uris.iterator();
2627        while (iterator.hasNext()) {
2628            final Uri uri = iterator.next();
2629            if (FileBackend.dangerousFile(uri)) {
2630                iterator.remove();
2631                Toast.makeText(
2632                                requireActivity(),
2633                                R.string.security_violation_not_attaching_file,
2634                                Toast.LENGTH_SHORT)
2635                        .show();
2636            }
2637        }
2638        return uris;
2639    }
2640
2641    private boolean showBlockSubmenu(View view) {
2642        final Jid jid = conversation.getJid();
2643        final boolean showReject =
2644                !conversation.isWithStranger()
2645                        && conversation
2646                                .getContact()
2647                                .getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST);
2648        PopupMenu popupMenu = new PopupMenu(getActivity(), view);
2649        popupMenu.inflate(R.menu.block);
2650        popupMenu.getMenu().findItem(R.id.block_contact).setVisible(jid.getLocal() != null);
2651        popupMenu.getMenu().findItem(R.id.reject).setVisible(showReject);
2652        popupMenu.setOnMenuItemClickListener(
2653                menuItem -> {
2654                    Blockable blockable;
2655                    switch (menuItem.getItemId()) {
2656                        case R.id.reject:
2657                            activity.xmppConnectionService.stopPresenceUpdatesTo(
2658                                    conversation.getContact());
2659                            updateSnackBar(conversation);
2660                            return true;
2661                        case R.id.block_domain:
2662                            blockable =
2663                                    conversation
2664                                            .getAccount()
2665                                            .getRoster()
2666                                            .getContact(jid.getDomain());
2667                            break;
2668                        default:
2669                            blockable = conversation;
2670                    }
2671                    BlockContactDialog.show(activity, blockable);
2672                    return true;
2673                });
2674        popupMenu.show();
2675        return true;
2676    }
2677
2678    private void updateSnackBar(final Conversation conversation) {
2679        final Account account = conversation.getAccount();
2680        final XmppConnection connection = account.getXmppConnection();
2681        final int mode = conversation.getMode();
2682        final Contact contact = mode == Conversation.MODE_SINGLE ? conversation.getContact() : null;
2683        if (conversation.getStatus() == Conversation.STATUS_ARCHIVED) {
2684            return;
2685        }
2686        if (account.getStatus() == Account.State.DISABLED) {
2687            showSnackbar(
2688                    R.string.this_account_is_disabled,
2689                    R.string.enable,
2690                    this.mEnableAccountListener);
2691        } else if (account.getStatus() == Account.State.LOGGED_OUT) {
2692            showSnackbar(R.string.this_account_is_logged_out,R.string.log_in,this.mEnableAccountListener);
2693        } else if (conversation.isBlocked()) {
2694            showSnackbar(R.string.contact_blocked, R.string.unblock, this.mUnblockClickListener);
2695        } else if (contact != null
2696                && !contact.showInRoster()
2697                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2698            showSnackbar(
2699                    R.string.contact_added_you,
2700                    R.string.add_back,
2701                    this.mAddBackClickListener,
2702                    this.mLongPressBlockListener);
2703        } else if (contact != null
2704                && contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)) {
2705            showSnackbar(
2706                    R.string.contact_asks_for_presence_subscription,
2707                    R.string.allow,
2708                    this.mAllowPresenceSubscription,
2709                    this.mLongPressBlockListener);
2710        } else if (mode == Conversation.MODE_MULTI
2711                && !conversation.getMucOptions().online()
2712                && account.getStatus() == Account.State.ONLINE) {
2713            switch (conversation.getMucOptions().getError()) {
2714                case NICK_IN_USE:
2715                    showSnackbar(R.string.nick_in_use, R.string.edit, clickToMuc);
2716                    break;
2717                case NO_RESPONSE:
2718                    showSnackbar(R.string.joining_conference, 0, null);
2719                    break;
2720                case SERVER_NOT_FOUND:
2721                    if (conversation.receivedMessagesCount() > 0) {
2722                        showSnackbar(R.string.remote_server_not_found, R.string.try_again, joinMuc);
2723                    } else {
2724                        showSnackbar(R.string.remote_server_not_found, R.string.leave, leaveMuc);
2725                    }
2726                    break;
2727                case REMOTE_SERVER_TIMEOUT:
2728                    if (conversation.receivedMessagesCount() > 0) {
2729                        showSnackbar(R.string.remote_server_timeout, R.string.try_again, joinMuc);
2730                    } else {
2731                        showSnackbar(R.string.remote_server_timeout, R.string.leave, leaveMuc);
2732                    }
2733                    break;
2734                case PASSWORD_REQUIRED:
2735                    showSnackbar(
2736                            R.string.conference_requires_password,
2737                            R.string.enter_password,
2738                            enterPassword);
2739                    break;
2740                case BANNED:
2741                    showSnackbar(R.string.conference_banned, R.string.leave, leaveMuc);
2742                    break;
2743                case MEMBERS_ONLY:
2744                    showSnackbar(R.string.conference_members_only, R.string.leave, leaveMuc);
2745                    break;
2746                case RESOURCE_CONSTRAINT:
2747                    showSnackbar(
2748                            R.string.conference_resource_constraint, R.string.try_again, joinMuc);
2749                    break;
2750                case KICKED:
2751                    showSnackbar(R.string.conference_kicked, R.string.join, joinMuc);
2752                    break;
2753                case TECHNICAL_PROBLEMS:
2754                    showSnackbar(R.string.conference_technical_problems, R.string.try_again, joinMuc);
2755                    break;
2756                case UNKNOWN:
2757                    showSnackbar(R.string.conference_unknown_error, R.string.try_again, joinMuc);
2758                    break;
2759                case INVALID_NICK:
2760                    showSnackbar(R.string.invalid_muc_nick, R.string.edit, clickToMuc);
2761                case SHUTDOWN:
2762                    showSnackbar(R.string.conference_shutdown, R.string.try_again, joinMuc);
2763                    break;
2764                case DESTROYED:
2765                    showSnackbar(R.string.conference_destroyed, R.string.leave, leaveMuc);
2766                    break;
2767                case NON_ANONYMOUS:
2768                    showSnackbar(
2769                            R.string.group_chat_will_make_your_jabber_id_public,
2770                            R.string.join,
2771                            acceptJoin);
2772                    break;
2773                default:
2774                    hideSnackbar();
2775                    break;
2776            }
2777        } else if (account.hasPendingPgpIntent(conversation)) {
2778            showSnackbar(R.string.openpgp_messages_found, R.string.decrypt, clickToDecryptListener);
2779        } else if (connection != null
2780                && connection.getFeatures().blocking()
2781                && conversation.countMessages() != 0
2782                && !conversation.isBlocked()
2783                && conversation.isWithStranger()) {
2784            showSnackbar(
2785                    R.string.received_message_from_stranger, R.string.block, mBlockClickListener);
2786        } else {
2787            hideSnackbar();
2788        }
2789    }
2790
2791    @Override
2792    public void refresh() {
2793        if (this.binding == null) {
2794            Log.d(
2795                    Config.LOGTAG,
2796                    "ConversationFragment.refresh() skipped updated because view binding was null");
2797            return;
2798        }
2799        if (this.conversation != null
2800                && this.activity != null
2801                && this.activity.xmppConnectionService != null) {
2802            if (!activity.xmppConnectionService.isConversationStillOpen(this.conversation)) {
2803                activity.onConversationArchived(this.conversation);
2804                return;
2805            }
2806        }
2807        this.refresh(true);
2808    }
2809
2810    private void refresh(boolean notifyConversationRead) {
2811        synchronized (this.messageList) {
2812            if (this.conversation != null) {
2813                conversation.populateWithMessages(this.messageList);
2814                updateSnackBar(conversation);
2815                updateStatusMessages();
2816                if (conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid) != 0) {
2817                    binding.unreadCountCustomView.setVisibility(View.VISIBLE);
2818                    binding.unreadCountCustomView.setUnreadCount(
2819                            conversation.getReceivedMessagesCountSinceUuid(lastMessageUuid));
2820                }
2821                this.messageListAdapter.notifyDataSetChanged();
2822                updateChatMsgHint();
2823                if (notifyConversationRead && activity != null) {
2824                    binding.messagesView.post(this::fireReadEvent);
2825                }
2826                updateSendButton();
2827                updateEditablity();
2828            }
2829        }
2830    }
2831
2832    protected void messageSent() {
2833        mSendingPgpMessage.set(false);
2834        this.binding.textinput.setText("");
2835        if (conversation.setCorrectingMessage(null)) {
2836            this.binding.textinput.append(conversation.getDraftMessage());
2837            conversation.setDraftMessage(null);
2838        }
2839        storeNextMessage();
2840        updateChatMsgHint();
2841        SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(activity);
2842        final boolean prefScrollToBottom =
2843                p.getBoolean(
2844                        "scroll_to_bottom",
2845                        activity.getResources().getBoolean(R.bool.scroll_to_bottom));
2846        if (prefScrollToBottom || scrolledToBottom()) {
2847            new Handler()
2848                    .post(
2849                            () -> {
2850                                int size = messageList.size();
2851                                this.binding.messagesView.setSelection(size - 1);
2852                            });
2853        }
2854    }
2855
2856    private boolean storeNextMessage() {
2857        return storeNextMessage(this.binding.textinput.getText().toString());
2858    }
2859
2860    private boolean storeNextMessage(String msg) {
2861        final boolean participating =
2862                conversation.getMode() == Conversational.MODE_SINGLE
2863                        || conversation.getMucOptions().participating();
2864        if (this.conversation.getStatus() != Conversation.STATUS_ARCHIVED
2865                && participating
2866                && this.conversation.setNextMessage(msg)) {
2867            this.activity.xmppConnectionService.updateConversation(this.conversation);
2868            return true;
2869        }
2870        return false;
2871    }
2872
2873    public void doneSendingPgpMessage() {
2874        mSendingPgpMessage.set(false);
2875    }
2876
2877    public long getMaxHttpUploadSize(Conversation conversation) {
2878        final XmppConnection connection = conversation.getAccount().getXmppConnection();
2879        return connection == null ? -1 : connection.getFeatures().getMaxHttpUploadSize();
2880    }
2881
2882    private void updateEditablity() {
2883        boolean canWrite =
2884                this.conversation.getMode() == Conversation.MODE_SINGLE
2885                        || this.conversation.getMucOptions().participating()
2886                        || this.conversation.getNextCounterpart() != null;
2887        this.binding.textinput.setFocusable(canWrite);
2888        this.binding.textinput.setFocusableInTouchMode(canWrite);
2889        this.binding.textSendButton.setEnabled(canWrite);
2890        this.binding.textinput.setCursorVisible(canWrite);
2891        this.binding.textinput.setEnabled(canWrite);
2892    }
2893
2894    public void updateSendButton() {
2895        boolean hasAttachments =
2896                mediaPreviewAdapter != null && mediaPreviewAdapter.hasAttachments();
2897        final Conversation c = this.conversation;
2898        final Presence.Status status;
2899        final String text =
2900                this.binding.textinput == null ? "" : this.binding.textinput.getText().toString();
2901        final SendButtonAction action;
2902        if (hasAttachments) {
2903            action = SendButtonAction.TEXT;
2904        } else {
2905            action = SendButtonTool.getAction(getActivity(), c, text);
2906        }
2907        if (c.getAccount().getStatus() == Account.State.ONLINE) {
2908            if (activity != null
2909                    && activity.xmppConnectionService != null
2910                    && activity.xmppConnectionService.getMessageArchiveService().isCatchingUp(c)) {
2911                status = Presence.Status.OFFLINE;
2912            } else if (c.getMode() == Conversation.MODE_SINGLE) {
2913                status = c.getContact().getShownStatus();
2914            } else {
2915                status =
2916                        c.getMucOptions().online()
2917                                ? Presence.Status.ONLINE
2918                                : Presence.Status.OFFLINE;
2919            }
2920        } else {
2921            status = Presence.Status.OFFLINE;
2922        }
2923        this.binding.textSendButton.setTag(action);
2924        this.binding.textSendButton.setIconResource(SendButtonTool.getSendButtonImageResource(action));
2925        this.binding.textSendButton.setIconTint(ColorStateList.valueOf(SendButtonTool.getSendButtonColor(this.binding.textSendButton, status)));
2926        // TODO send button color
2927        final Activity activity = getActivity();
2928        if (activity != null) {
2929        }
2930    }
2931
2932    protected void updateStatusMessages() {
2933        DateSeparator.addAll(this.messageList);
2934        if (showLoadMoreMessages(conversation)) {
2935            this.messageList.add(0, Message.createLoadMoreMessage(conversation));
2936        }
2937        if (conversation.getMode() == Conversation.MODE_SINGLE) {
2938            ChatState state = conversation.getIncomingChatState();
2939            if (state == ChatState.COMPOSING) {
2940                this.messageList.add(
2941                        Message.createStatusMessage(
2942                                conversation,
2943                                getString(R.string.contact_is_typing, conversation.getName())));
2944            } else if (state == ChatState.PAUSED) {
2945                this.messageList.add(
2946                        Message.createStatusMessage(
2947                                conversation,
2948                                getString(
2949                                        R.string.contact_has_stopped_typing,
2950                                        conversation.getName())));
2951            } else {
2952                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2953                    final Message message = this.messageList.get(i);
2954                    if (message.getType() != Message.TYPE_STATUS) {
2955                        if (message.getStatus() == Message.STATUS_RECEIVED) {
2956                            return;
2957                        } else {
2958                            if (message.getStatus() == Message.STATUS_SEND_DISPLAYED) {
2959                                this.messageList.add(
2960                                        i + 1,
2961                                        Message.createStatusMessage(
2962                                                conversation,
2963                                                getString(
2964                                                        R.string.contact_has_read_up_to_this_point,
2965                                                        conversation.getName())));
2966                                return;
2967                            }
2968                        }
2969                    }
2970                }
2971            }
2972        } else {
2973            final MucOptions mucOptions = conversation.getMucOptions();
2974            final List<MucOptions.User> allUsers = mucOptions.getUsers();
2975            final Set<ReadByMarker> addedMarkers = new HashSet<>();
2976            ChatState state = ChatState.COMPOSING;
2977            List<MucOptions.User> users =
2978                    conversation.getMucOptions().getUsersWithChatState(state, 5);
2979            if (users.size() == 0) {
2980                state = ChatState.PAUSED;
2981                users = conversation.getMucOptions().getUsersWithChatState(state, 5);
2982            }
2983            if (mucOptions.isPrivateAndNonAnonymous()) {
2984                for (int i = this.messageList.size() - 1; i >= 0; --i) {
2985                    final Set<ReadByMarker> markersForMessage =
2986                            messageList.get(i).getReadByMarkers();
2987                    final List<MucOptions.User> shownMarkers = new ArrayList<>();
2988                    for (ReadByMarker marker : markersForMessage) {
2989                        if (!ReadByMarker.contains(marker, addedMarkers)) {
2990                            addedMarkers.add(
2991                                    marker); // may be put outside this condition. set should do
2992                                             // dedup anyway
2993                            MucOptions.User user = mucOptions.findUser(marker);
2994                            if (user != null && !users.contains(user)) {
2995                                shownMarkers.add(user);
2996                            }
2997                        }
2998                    }
2999                    final ReadByMarker markerForSender = ReadByMarker.from(messageList.get(i));
3000                    final Message statusMessage;
3001                    final int size = shownMarkers.size();
3002                    if (size > 1) {
3003                        final String body;
3004                        if (size <= 4) {
3005                            body =
3006                                    getString(
3007                                            R.string.contacts_have_read_up_to_this_point,
3008                                            UIHelper.concatNames(shownMarkers));
3009                        } else if (ReadByMarker.allUsersRepresented(
3010                                allUsers, markersForMessage, markerForSender)) {
3011                            body = getString(R.string.everyone_has_read_up_to_this_point);
3012                        } else {
3013                            body =
3014                                    getString(
3015                                            R.string.contacts_and_n_more_have_read_up_to_this_point,
3016                                            UIHelper.concatNames(shownMarkers, 3),
3017                                            size - 3);
3018                        }
3019                        statusMessage = Message.createStatusMessage(conversation, body);
3020                        statusMessage.setCounterparts(shownMarkers);
3021                    } else if (size == 1) {
3022                        statusMessage =
3023                                Message.createStatusMessage(
3024                                        conversation,
3025                                        getString(
3026                                                R.string.contact_has_read_up_to_this_point,
3027                                                UIHelper.getDisplayName(shownMarkers.get(0))));
3028                        statusMessage.setCounterpart(shownMarkers.get(0).getFullJid());
3029                        statusMessage.setTrueCounterpart(shownMarkers.get(0).getRealJid());
3030                    } else {
3031                        statusMessage = null;
3032                    }
3033                    if (statusMessage != null) {
3034                        this.messageList.add(i + 1, statusMessage);
3035                    }
3036                    addedMarkers.add(markerForSender);
3037                    if (ReadByMarker.allUsersRepresented(allUsers, addedMarkers)) {
3038                        break;
3039                    }
3040                }
3041            }
3042            if (users.size() > 0) {
3043                Message statusMessage;
3044                if (users.size() == 1) {
3045                    MucOptions.User user = users.get(0);
3046                    int id =
3047                            state == ChatState.COMPOSING
3048                                    ? R.string.contact_is_typing
3049                                    : R.string.contact_has_stopped_typing;
3050                    statusMessage =
3051                            Message.createStatusMessage(
3052                                    conversation, getString(id, UIHelper.getDisplayName(user)));
3053                    statusMessage.setTrueCounterpart(user.getRealJid());
3054                    statusMessage.setCounterpart(user.getFullJid());
3055                } else {
3056                    int id =
3057                            state == ChatState.COMPOSING
3058                                    ? R.string.contacts_are_typing
3059                                    : R.string.contacts_have_stopped_typing;
3060                    statusMessage =
3061                            Message.createStatusMessage(
3062                                    conversation, getString(id, UIHelper.concatNames(users)));
3063                    statusMessage.setCounterparts(users);
3064                }
3065                this.messageList.add(statusMessage);
3066            }
3067        }
3068    }
3069
3070    private void stopScrolling() {
3071        long now = SystemClock.uptimeMillis();
3072        MotionEvent cancel = MotionEvent.obtain(now, now, MotionEvent.ACTION_CANCEL, 0, 0, 0);
3073        binding.messagesView.dispatchTouchEvent(cancel);
3074    }
3075
3076    private boolean showLoadMoreMessages(final Conversation c) {
3077        if (activity == null || activity.xmppConnectionService == null) {
3078            return false;
3079        }
3080        final boolean mam = hasMamSupport(c) && !c.getContact().isBlocked();
3081        final MessageArchiveService service =
3082                activity.xmppConnectionService.getMessageArchiveService();
3083        return mam
3084                && (c.getLastClearHistory().getTimestamp() != 0
3085                        || (c.countMessages() == 0
3086                                && c.messagesLoaded.get()
3087                                && c.hasMessagesLeftOnServer()
3088                                && !service.queryInProgress(c)));
3089    }
3090
3091    private boolean hasMamSupport(final Conversation c) {
3092        if (c.getMode() == Conversation.MODE_SINGLE) {
3093            final XmppConnection connection = c.getAccount().getXmppConnection();
3094            return connection != null && connection.getFeatures().mam();
3095        } else {
3096            return c.getMucOptions().mamSupport();
3097        }
3098    }
3099
3100    protected void showSnackbar(
3101            final int message, final int action, final OnClickListener clickListener) {
3102        showSnackbar(message, action, clickListener, null);
3103    }
3104
3105    protected void showSnackbar(
3106            final int message,
3107            final int action,
3108            final OnClickListener clickListener,
3109            final View.OnLongClickListener longClickListener) {
3110        this.binding.snackbar.setVisibility(View.VISIBLE);
3111        this.binding.snackbar.setOnClickListener(null);
3112        this.binding.snackbarMessage.setText(message);
3113        this.binding.snackbarMessage.setOnClickListener(null);
3114        this.binding.snackbarAction.setVisibility(clickListener == null ? View.GONE : View.VISIBLE);
3115        if (action != 0) {
3116            this.binding.snackbarAction.setText(action);
3117        }
3118        this.binding.snackbarAction.setOnClickListener(clickListener);
3119        this.binding.snackbarAction.setOnLongClickListener(longClickListener);
3120    }
3121
3122    protected void hideSnackbar() {
3123        this.binding.snackbar.setVisibility(View.GONE);
3124    }
3125
3126    protected void sendMessage(Message message) {
3127        activity.xmppConnectionService.sendMessage(message);
3128        messageSent();
3129    }
3130
3131    protected void sendPgpMessage(final Message message) {
3132        final XmppConnectionService xmppService = activity.xmppConnectionService;
3133        final Contact contact = message.getConversation().getContact();
3134        if (!activity.hasPgp()) {
3135            activity.showInstallPgpDialog();
3136            return;
3137        }
3138        if (conversation.getAccount().getPgpSignature() == null) {
3139            activity.announcePgp(
3140                    conversation.getAccount(), conversation, null, activity.onOpenPGPKeyPublished);
3141            return;
3142        }
3143        if (!mSendingPgpMessage.compareAndSet(false, true)) {
3144            Log.d(Config.LOGTAG, "sending pgp message already in progress");
3145        }
3146        if (conversation.getMode() == Conversation.MODE_SINGLE) {
3147            if (contact.getPgpKeyId() != 0) {
3148                xmppService
3149                        .getPgpEngine()
3150                        .hasKey(
3151                                contact,
3152                                new UiCallback<Contact>() {
3153
3154                                    @Override
3155                                    public void userInputRequired(
3156                                            PendingIntent pi, Contact contact) {
3157                                        startPendingIntent(pi, REQUEST_ENCRYPT_MESSAGE);
3158                                    }
3159
3160                                    @Override
3161                                    public void success(Contact contact) {
3162                                        encryptTextMessage(message);
3163                                    }
3164
3165                                    @Override
3166                                    public void error(int error, Contact contact) {
3167                                        activity.runOnUiThread(
3168                                                () ->
3169                                                        Toast.makeText(
3170                                                                        activity,
3171                                                                        R.string
3172                                                                                .unable_to_connect_to_keychain,
3173                                                                        Toast.LENGTH_SHORT)
3174                                                                .show());
3175                                        mSendingPgpMessage.set(false);
3176                                    }
3177                                });
3178
3179            } else {
3180                showNoPGPKeyDialog(
3181                        false,
3182                        (dialog, which) -> {
3183                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3184                            xmppService.updateConversation(conversation);
3185                            message.setEncryption(Message.ENCRYPTION_NONE);
3186                            xmppService.sendMessage(message);
3187                            messageSent();
3188                        });
3189            }
3190        } else {
3191            if (conversation.getMucOptions().pgpKeysInUse()) {
3192                if (!conversation.getMucOptions().everybodyHasKeys()) {
3193                    Toast warning =
3194                            Toast.makeText(
3195                                    getActivity(), R.string.missing_public_keys, Toast.LENGTH_LONG);
3196                    warning.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
3197                    warning.show();
3198                }
3199                encryptTextMessage(message);
3200            } else {
3201                showNoPGPKeyDialog(
3202                        true,
3203                        (dialog, which) -> {
3204                            conversation.setNextEncryption(Message.ENCRYPTION_NONE);
3205                            message.setEncryption(Message.ENCRYPTION_NONE);
3206                            xmppService.updateConversation(conversation);
3207                            xmppService.sendMessage(message);
3208                            messageSent();
3209                        });
3210            }
3211        }
3212    }
3213
3214    public void encryptTextMessage(Message message) {
3215        activity.xmppConnectionService
3216                .getPgpEngine()
3217                .encrypt(
3218                        message,
3219                        new UiCallback<Message>() {
3220
3221                            @Override
3222                            public void userInputRequired(PendingIntent pi, Message message) {
3223                                startPendingIntent(pi, REQUEST_SEND_MESSAGE);
3224                            }
3225
3226                            @Override
3227                            public void success(Message message) {
3228                                // TODO the following two call can be made before the callback
3229                                getActivity().runOnUiThread(() -> messageSent());
3230                            }
3231
3232                            @Override
3233                            public void error(final int error, Message message) {
3234                                getActivity()
3235                                        .runOnUiThread(
3236                                                () -> {
3237                                                    doneSendingPgpMessage();
3238                                                    Toast.makeText(
3239                                                                    getActivity(),
3240                                                                    error == 0
3241                                                                            ? R.string
3242                                                                                    .unable_to_connect_to_keychain
3243                                                                            : error,
3244                                                                    Toast.LENGTH_SHORT)
3245                                                            .show();
3246                                                });
3247                            }
3248                        });
3249    }
3250
3251    public void showNoPGPKeyDialog(final boolean plural, final DialogInterface.OnClickListener listener) {
3252        final MaterialAlertDialogBuilder builder = new MaterialAlertDialogBuilder(requireActivity());
3253        if (plural) {
3254            builder.setTitle(getString(R.string.no_pgp_keys));
3255            builder.setMessage(getText(R.string.contacts_have_no_pgp_keys));
3256        } else {
3257            builder.setTitle(getString(R.string.no_pgp_key));
3258            builder.setMessage(getText(R.string.contact_has_no_pgp_key));
3259        }
3260        builder.setNegativeButton(getString(R.string.cancel), null);
3261        builder.setPositiveButton(getString(R.string.send_unencrypted), listener);
3262        builder.create().show();
3263    }
3264
3265    public void appendText(String text, final boolean doNotAppend) {
3266        if (text == null) {
3267            return;
3268        }
3269        final Editable editable = this.binding.textinput.getText();
3270        String previous = editable == null ? "" : editable.toString();
3271        if (doNotAppend && !TextUtils.isEmpty(previous)) {
3272            Toast.makeText(getActivity(), R.string.already_drafting_message, Toast.LENGTH_LONG)
3273                    .show();
3274            return;
3275        }
3276        if (UIHelper.isLastLineQuote(previous)) {
3277            text = '\n' + text;
3278        } else if (previous.length() != 0
3279                && !Character.isWhitespace(previous.charAt(previous.length() - 1))) {
3280            text = " " + text;
3281        }
3282        this.binding.textinput.append(text);
3283    }
3284
3285    @Override
3286    public boolean onEnterPressed(final boolean isCtrlPressed) {
3287        if (isCtrlPressed || enterIsSend()) {
3288            sendMessage();
3289            return true;
3290        }
3291        return false;
3292    }
3293
3294    private boolean enterIsSend() {
3295        final SharedPreferences p = PreferenceManager.getDefaultSharedPreferences(getActivity());
3296        return p.getBoolean("enter_is_send", getResources().getBoolean(R.bool.enter_is_send));
3297    }
3298
3299    public boolean onArrowUpCtrlPressed() {
3300        final Message lastEditableMessage =
3301                conversation == null ? null : conversation.getLastEditableMessage();
3302        if (lastEditableMessage != null) {
3303            correctMessage(lastEditableMessage);
3304            return true;
3305        } else {
3306            Toast.makeText(getActivity(), R.string.could_not_correct_message, Toast.LENGTH_LONG)
3307                    .show();
3308            return false;
3309        }
3310    }
3311
3312    @Override
3313    public void onTypingStarted() {
3314        final XmppConnectionService service =
3315                activity == null ? null : activity.xmppConnectionService;
3316        if (service == null) {
3317            return;
3318        }
3319        final Account.State status = conversation.getAccount().getStatus();
3320        if (status == Account.State.ONLINE
3321                && conversation.setOutgoingChatState(ChatState.COMPOSING)) {
3322            service.sendChatState(conversation);
3323        }
3324        runOnUiThread(this::updateSendButton);
3325    }
3326
3327    @Override
3328    public void onTypingStopped() {
3329        final XmppConnectionService service =
3330                activity == null ? null : activity.xmppConnectionService;
3331        if (service == null) {
3332            return;
3333        }
3334        final Account.State status = conversation.getAccount().getStatus();
3335        if (status == Account.State.ONLINE && conversation.setOutgoingChatState(ChatState.PAUSED)) {
3336            service.sendChatState(conversation);
3337        }
3338    }
3339
3340    @Override
3341    public void onTextDeleted() {
3342        final XmppConnectionService service =
3343                activity == null ? null : activity.xmppConnectionService;
3344        if (service == null) {
3345            return;
3346        }
3347        final Account.State status = conversation.getAccount().getStatus();
3348        if (status == Account.State.ONLINE
3349                && conversation.setOutgoingChatState(Config.DEFAULT_CHAT_STATE)) {
3350            service.sendChatState(conversation);
3351        }
3352        if (storeNextMessage()) {
3353            runOnUiThread(
3354                    () -> {
3355                        if (activity == null) {
3356                            return;
3357                        }
3358                        activity.onConversationsListItemUpdated();
3359                    });
3360        }
3361        runOnUiThread(this::updateSendButton);
3362    }
3363
3364    @Override
3365    public void onTextChanged() {
3366        if (conversation != null && conversation.getCorrectingMessage() != null) {
3367            runOnUiThread(this::updateSendButton);
3368        }
3369    }
3370
3371    @Override
3372    public boolean onTabPressed(boolean repeated) {
3373        if (conversation == null || conversation.getMode() == Conversation.MODE_SINGLE) {
3374            return false;
3375        }
3376        if (repeated) {
3377            completionIndex++;
3378        } else {
3379            lastCompletionLength = 0;
3380            completionIndex = 0;
3381            final String content = this.binding.textinput.getText().toString();
3382            lastCompletionCursor = this.binding.textinput.getSelectionEnd();
3383            int start =
3384                    lastCompletionCursor > 0
3385                            ? content.lastIndexOf(" ", lastCompletionCursor - 1) + 1
3386                            : 0;
3387            firstWord = start == 0;
3388            incomplete = content.substring(start, lastCompletionCursor);
3389        }
3390        List<String> completions = new ArrayList<>();
3391        for (MucOptions.User user : conversation.getMucOptions().getUsers()) {
3392            String name = user.getName();
3393            if (name != null && name.startsWith(incomplete)) {
3394                completions.add(name + (firstWord ? ": " : " "));
3395            }
3396        }
3397        Collections.sort(completions);
3398        if (completions.size() > completionIndex) {
3399            String completion = completions.get(completionIndex).substring(incomplete.length());
3400            this.binding
3401                    .textinput
3402                    .getEditableText()
3403                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3404            this.binding.textinput.getEditableText().insert(lastCompletionCursor, completion);
3405            lastCompletionLength = completion.length();
3406        } else {
3407            completionIndex = -1;
3408            this.binding
3409                    .textinput
3410                    .getEditableText()
3411                    .delete(lastCompletionCursor, lastCompletionCursor + lastCompletionLength);
3412            lastCompletionLength = 0;
3413        }
3414        return true;
3415    }
3416
3417    private void startPendingIntent(PendingIntent pendingIntent, int requestCode) {
3418        try {
3419            getActivity()
3420                    .startIntentSenderForResult(
3421                            pendingIntent.getIntentSender(), requestCode, null, 0, 0, 0, Compatibility.pgpStartIntentSenderOptions());
3422        } catch (final SendIntentException ignored) {
3423        }
3424    }
3425
3426    @Override
3427    public void onBackendConnected() {
3428        Log.d(Config.LOGTAG, "ConversationFragment.onBackendConnected()");
3429        String uuid = pendingConversationsUuid.pop();
3430        if (uuid != null) {
3431            if (!findAndReInitByUuidOrArchive(uuid)) {
3432                return;
3433            }
3434        } else {
3435            if (!activity.xmppConnectionService.isConversationStillOpen(conversation)) {
3436                clearPending();
3437                activity.onConversationArchived(conversation);
3438                return;
3439            }
3440        }
3441        ActivityResult activityResult = postponedActivityResult.pop();
3442        if (activityResult != null) {
3443            handleActivityResult(activityResult);
3444        }
3445        clearPending();
3446    }
3447
3448    private boolean findAndReInitByUuidOrArchive(@NonNull final String uuid) {
3449        Conversation conversation = activity.xmppConnectionService.findConversationByUuid(uuid);
3450        if (conversation == null) {
3451            clearPending();
3452            activity.onConversationArchived(null);
3453            return false;
3454        }
3455        reInit(conversation);
3456        ScrollState scrollState = pendingScrollState.pop();
3457        String lastMessageUuid = pendingLastMessageUuid.pop();
3458        List<Attachment> attachments = pendingMediaPreviews.pop();
3459        if (scrollState != null) {
3460            setScrollPosition(scrollState, lastMessageUuid);
3461        }
3462        if (attachments != null && attachments.size() > 0) {
3463            Log.d(Config.LOGTAG, "had attachments on restore");
3464            mediaPreviewAdapter.addMediaPreviews(attachments);
3465            toggleInputMethod();
3466        }
3467        return true;
3468    }
3469
3470    private void clearPending() {
3471        if (postponedActivityResult.clear()) {
3472            Log.e(Config.LOGTAG, "cleared pending intent with unhandled result left");
3473            if (pendingTakePhotoUri.clear()) {
3474                Log.e(Config.LOGTAG, "cleared pending photo uri");
3475            }
3476        }
3477        if (pendingScrollState.clear()) {
3478            Log.e(Config.LOGTAG, "cleared scroll state");
3479        }
3480        if (pendingConversationsUuid.clear()) {
3481            Log.e(Config.LOGTAG, "cleared pending conversations uuid");
3482        }
3483        if (pendingMediaPreviews.clear()) {
3484            Log.e(Config.LOGTAG, "cleared pending media previews");
3485        }
3486    }
3487
3488    public Conversation getConversation() {
3489        return conversation;
3490    }
3491
3492    @Override
3493    public void onContactPictureLongClicked(View v, final Message message) {
3494        final String fingerprint;
3495        if (message.getEncryption() == Message.ENCRYPTION_PGP
3496                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3497            fingerprint = "pgp";
3498        } else {
3499            fingerprint = message.getFingerprint();
3500        }
3501        final PopupMenu popupMenu = new PopupMenu(getActivity(), v);
3502        final Contact contact = message.getContact();
3503        if (message.getStatus() <= Message.STATUS_RECEIVED
3504                && (contact == null || !contact.isSelf())) {
3505            if (message.getConversation().getMode() == Conversation.MODE_MULTI) {
3506                final Jid cp = message.getCounterpart();
3507                if (cp == null || cp.isBareJid()) {
3508                    return;
3509                }
3510                final Jid tcp = message.getTrueCounterpart();
3511                final User userByRealJid =
3512                        tcp != null
3513                                ? conversation.getMucOptions().findOrCreateUserByRealJid(tcp, cp)
3514                                : null;
3515                final User user =
3516                        userByRealJid != null
3517                                ? userByRealJid
3518                                : conversation.getMucOptions().findUserByFullJid(cp);
3519                popupMenu.inflate(R.menu.muc_details_context);
3520                final Menu menu = popupMenu.getMenu();
3521                MucDetailsContextMenuHelper.configureMucDetailsContextMenu(
3522                        activity, menu, conversation, user);
3523                popupMenu.setOnMenuItemClickListener(
3524                        menuItem ->
3525                                MucDetailsContextMenuHelper.onContextItemSelected(
3526                                        menuItem, user, activity, fingerprint));
3527            } else {
3528                popupMenu.inflate(R.menu.one_on_one_context);
3529                popupMenu.setOnMenuItemClickListener(
3530                        item -> {
3531                            switch (item.getItemId()) {
3532                                case R.id.action_contact_details:
3533                                    activity.switchToContactDetails(
3534                                            message.getContact(), fingerprint);
3535                                    break;
3536                                case R.id.action_show_qr_code:
3537                                    activity.showQrCode(
3538                                            "xmpp:"
3539                                                    + message.getContact()
3540                                                            .getJid()
3541                                                            .asBareJid()
3542                                                            .toEscapedString());
3543                                    break;
3544                            }
3545                            return true;
3546                        });
3547            }
3548        } else {
3549            popupMenu.inflate(R.menu.account_context);
3550            final Menu menu = popupMenu.getMenu();
3551            menu.findItem(R.id.action_manage_accounts)
3552                    .setVisible(QuickConversationsService.isConversations());
3553            popupMenu.setOnMenuItemClickListener(
3554                    item -> {
3555                        final XmppActivity activity = this.activity;
3556                        if (activity == null) {
3557                            Log.e(Config.LOGTAG, "Unable to perform action. no context provided");
3558                            return true;
3559                        }
3560                        switch (item.getItemId()) {
3561                            case R.id.action_show_qr_code:
3562                                activity.showQrCode(conversation.getAccount().getShareableUri());
3563                                break;
3564                            case R.id.action_account_details:
3565                                activity.switchToAccount(
3566                                        message.getConversation().getAccount(), fingerprint);
3567                                break;
3568                            case R.id.action_manage_accounts:
3569                                AccountUtils.launchManageAccounts(activity);
3570                                break;
3571                        }
3572                        return true;
3573                    });
3574        }
3575        popupMenu.show();
3576    }
3577
3578    @Override
3579    public void onContactPictureClicked(Message message) {
3580        String fingerprint;
3581        if (message.getEncryption() == Message.ENCRYPTION_PGP
3582                || message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
3583            fingerprint = "pgp";
3584        } else {
3585            fingerprint = message.getFingerprint();
3586        }
3587        final boolean received = message.getStatus() <= Message.STATUS_RECEIVED;
3588        if (received) {
3589            if (message.getConversation() instanceof Conversation
3590                    && message.getConversation().getMode() == Conversation.MODE_MULTI) {
3591                Jid tcp = message.getTrueCounterpart();
3592                Jid user = message.getCounterpart();
3593                if (user != null && !user.isBareJid()) {
3594                    final MucOptions mucOptions =
3595                            ((Conversation) message.getConversation()).getMucOptions();
3596                    if (mucOptions.participating()
3597                            || ((Conversation) message.getConversation()).getNextCounterpart()
3598                                    != null) {
3599                        if (!mucOptions.isUserInRoom(user)
3600                                && mucOptions.findUserByRealJid(
3601                                                tcp == null ? null : tcp.asBareJid())
3602                                        == null) {
3603                            Toast.makeText(
3604                                            getActivity(),
3605                                            activity.getString(
3606                                                    R.string.user_has_left_conference,
3607                                                    user.getResource()),
3608                                            Toast.LENGTH_SHORT)
3609                                    .show();
3610                        }
3611                        highlightInConference(user.getResource());
3612                    } else {
3613                        Toast.makeText(
3614                                        getActivity(),
3615                                        R.string.you_are_not_participating,
3616                                        Toast.LENGTH_SHORT)
3617                                .show();
3618                    }
3619                }
3620                return;
3621            } else {
3622                if (!message.getContact().isSelf()) {
3623                    activity.switchToContactDetails(message.getContact(), fingerprint);
3624                    return;
3625                }
3626            }
3627        }
3628        activity.switchToAccount(message.getConversation().getAccount(), fingerprint);
3629    }
3630
3631    private Activity requireActivity() {
3632        final Activity activity = getActivity();
3633        if (activity == null) {
3634            throw new IllegalStateException("Activity not attached");
3635        }
3636        return activity;
3637    }
3638}